THEREOF

TECHNICAL FIELD

[0001] The present subject matter relates generally to a circuit assembly, and more particularly to a positioning member for the circuit assembly including one or more electronic components, and the circuit assembly capable of being deployed in a motor vehicle.

BACKGROUND

[0002] Generally, a circuit assembly, which is an electronic circuit assembly, is available in almost all industries due to wide adaptation of electronics and electronic systems; automobile industry is no exception. Generally, motor vehicles include multiple electronic and electrical systems that includes electronic circuit assembly for performing one or more functions like controlling etc. For example, a control unit may be used for controlling the function of motor of the vehicle. Especially, electric vehicles or hybrid vehicles include an electric motor, which is also referred to as traction motor, that is used for providing motion to the vehicle. In case of hybrid vehicles, an internal combustion (IC) engine is provided alongside the electric motor, where there arises a need for controlling the function of two motors viz. the electric motor and the IC engine.

[0003] The IC engine can be operated or controlled by a purely mechanical system or an electronic system or a combination of both. For example, the IC engine can be operated using a carburetor that is mechanical in nature and can be controlled by mechanical or electro-mechanical means or the IC engine can be operated using a fuel injector system that majorly requires electronic control. Therefore, either in a hybrid vehicle incorporating an IC engine and a traction motor or in an electric vehicle incorporating only a traction motor, the electronic circuit assembly plays a crucial role for functioning of the vehicle. Thus, there is a challenge from the time of assembly forming the circuit assembly and ensuring reliable functioning of the system as the motor vehicle is subjected to various conditions like diverse terrains, climatic conditions, and driving habits. As any inconsistency in the process from the inception would result in failure of the entire system leading to catastrophic situation.

BRIEF DESCRIPTION OF THE DRAWINGS

[0004] The detailed description of the present subject matter is described with reference to the accompanying figures. Same numbers are used throughout the drawings to reference like features and components.

[0005] Fig. 1 illustrates a left side view of an exemplary motor vehicle, in accordance with an embodiment of the present subject matter.

[0006] Fig. 2 (a) illustrates an isometric view of a housing, in accordance with an embodiment of the subject matter.

[0007] Fig 2 (b) illustrates a partially exploded view of the housing, in accordance with an embodiment of Fig. 2 (a).

[0008] Fig. 3 depicts a perspective view of a portion of the circuit assembly, in accordance with the embodiment as depicted in Fig. 2 (b).

[0009] Fig. 4 depicts a perspective view of the positioning member, in accordance with an embodiment of the present subject matter.

[00010] Fig. 5 depicts a sectional view of the circuit assembly taken along axis A- A’, in accordance with the embodiment of Fig. 3.

[00011] Fig. 6 depicts another perspective of the circuit assembly with selected parts, in accordance with the embodiment of the present subject matter.

[00012] Fig. 7 illustrates an exploded view of the circuit assembly, in accordance with an embodiment of the present subject matter.

[00013] Fig. 8 illustrates a detailed perspective view of a positioning member, in accordance with another embodiment of the present subject matter.

[00014] Fig. 9 illustrates a perspective view of a positioning member, in accordance with yet another embodiment of the present subject matter.

DETAILED DESCRIPTION

[00015] Generally, every motor vehicle incorporating an electric motor that acts as one of the prime movers of the vehicle has to be controlled and operated by a circuit like a control unit. For example, in case of a hybrid vehicle, the electric motor and an internal combustion (IC) are operated depending on requirement by the user either independently, at the same time, or one subsequent to other depending on power or mileage requirements by the user. The aforementioned functions are controlled by the control unit or other similar circuitry that may be formed by discrete electronic components.

[00016] Typically, electric vehicles or hybrid vehicles incorporated with such aforementioned electric motor that act as a prime mover is provided with a high capacity battery or high capacity battery pack for driving the electric motor. The control unit is capable of converting the voltage from the high capacity battery, which is direct current (DC) voltage, into alternating current (AC) voltage for driving the electric motor that is for example a three phase AC electric motor. Thus, the circuit assembly like a control unit includes plurality of electronic components like transistors that are used for switching the three phase AC electric motor and for controlling the current flow. Also, the control unit enables charging of battery from the electric motor, when it is functioning in generator mode, during which high currents close to 5-10 amperes is generated. Thus, the circuit assembly like the control unit tends to heat up during operation. However, the electronic components require heat dissipation for optimum functioning as well as compact light in weight to avoid adverse impact on packaging, number of components & cost of the product.

[00017] Generally, heat sinks are used in the circuit assembly that help in heat dissipation. The heat sinks are disposed in physical contact with the electronic components for heat transfer. The heat sink requires optimum contact with the electronic components for effective transfer of heat. However, the known process followed during circuit assembly would not provide such optimum contact between the parts. For example, the circuit assembly that includes various electronic components that are assembled/soldered onto a circuit board. As the process involves placing the discrete electronic components followed by soldering of the components on the board during which the components might get misaligned in one more direction. For instance, the electronic component may get positioned at an undesired height that affects clearance with other boards in the circuit assembly as the circuit assembly includes multiple boards that are placed like floors (one above other). Further, any misaligned soldering of the electronic components would affect clearance with adjacent components. Such a problem may be arising due to compact layout of the circuit boards and the need for packaging the components compactly. Such problem is prominent in vertical type electronic components and it may also be seen non- vertical type electronic components. Further, the improper soldering of the electronic components that affects the clearance between the components may result in short circuit or heat transfer between the components, which is undesired.

[00018] Moreover, the circuit assembly is also provided with heat conducting parts like cooling bars or similar components that are to be aligned with the electronic components and at the same time with the heat sink. Thus, any such misalignments would pose a challenge to accommodate such circuit assembly in a compact casing. This further requires rework of the circuit assembly for alignment and assembly, which is counterproductive and time consuming. Moreover, the assembly personnel need to be trained to assure proper assembly to achieve such precise assembly, which requires training the assembly personnel, which nevertheless would still leave room for manual error.

[00019] Additionally, when such a circuit assembly is placed in a motor vehicle, the circuit assembly is subject to various operating conditions and the vehicle would be operated in various terrains. Thus, the functioning of the circuit assembly in every operating condition like under any temperature fluctuation is to be ensured, which would be achieved by effective heat dissipation. Also, operating the vehicle in any terrain, like bumpy terrains that would generate vibrations reaching the circuit assembly and the electronic components, should not affect the electronic components and cooling bar alignment.

[00020] Thus, there is a need for providing a circuit assembly that address the aforementioned and other problems in the prior art. Thus, the present subject matter provides a compact circuit assembly that is configured to be capable of reducing any misalignment that would occur during assembly thereby providing aligned electronic components in the circuit assembly resulting in improved overall assembly time and assembly process. Further, the present subject matter improves the functioning of the circuit assembly due to improved alignment, heat dissipation due to optimum positioning of the components with respect to other components, and improved packaging of the components, say in the casing. Therefore, the circuit assembly of the present subject matter can be used to form a control unit of an electric or a hybrid vehicle that acts as a brain of the motor vehicle offering reliable operation.

[00021] The present subject matter provides the circuit assembly comprising one or more boards and a first board of the one or more boards supports one or more electronic component(s). It is a feature of the present subject matter that the electronic component(s) are supported by a positioning member whereby the electronic components are assembled on the first board in a first orientation.

[00022] Thus, it is aspect that the electronic components disposed in first orientation will be optimum contact with the heat sinks. The optimum contact refers to conduction between the elements (heat sink and electronic component) due to the electronic component(s) being disposed in a desired orientation.

[00023] It is a feature of the present subject matter that the circuit assembly includes a cooling bar supported by the positioning member. In one embodiment, the cooling bar is supported on the first board itself. The positioning member enables the cooling bar to be in a first orientation with respect to the other components of the circuit assembly like the electronic components. For example, the cooling bar that enables heat transfer between the electronic components and a casing of the circuit assembly is kept in optimum contact with each other enabling optimum heat dissipation by the positioning member. As the same positioning member supports the electronic components and also the cooling bar thereby reducing any clearance. The first orientation includes at least one of a height or inclination.

[00024] The cooling bar disposed in first orientation offers optimum contact region with the electronic components, which is achieved by providing greater contact area between the electronic components and the cooling bar with minimal relative positional disturbance. [00025] In one embodiment, the positioning member includes an elongated base about which the one or more electronic components are provided. The elongated base is provided with slotted portions for receiving the electronic components thereat. It is an aspect that the slotted portions provide an interference fit of the electronic components whereby the electronic components are retained at one or more pre-determined orientation with respect to the first board. For example, vertical movement of the components and spacers is achieved. This enables ease of soldering or the like. Moreover, the positioning member is capable of supporting plurality of electronic components at the same time, which enables faster soldering. It is an aspect that the elongated base enables in positioning of the electronic components at the pre-determined orientation say at the pre-determined distance from each other and a pre-determined height by the elongated base extends along at least a length of the first board.

[00026] It is a feature of the present subject matter that the electronic components and the cooling bar are kept in contact using a pre-load member that exerts pressure on the electronic component to be in contact with the cooling bar.

[00027] It is another feature of the present subject matter that the positioning member itself supports the electronic component and the cooling bar wherein a contact portion of the cooling bar with the casing, acting as a heat sink, is also aligned.

[00028] It is a feature that the positioning member includes plurality of walls that are capable of separating the one or more electronic components from each other. In other words, the plurality of walls defines a gap formed between adjacently disposed walls to accommodate a component thereat. For example, the slotted portions are provided at the gap and the slotted portion and the walls hold the electronic components, even vertical mounted components, on the first board in the first orientation maintains a pre-determined clearance in all directions.

[00029] It is a feature that the plurality of walls enables guiding the preload members, like spring clips, in a desired location avoiding unintended assembly or tilt of the preload members. For example, even while assembling multiple discrete electronic components, the desired orientation of the electronic components is retained by the positioning member thereby reducing any adjustment time before welding. Thus, the positioning member(s) reduce assembly time and at the same time save time and cost of rework. Thus, the positioning members may be deployed in circuit assembly even having compactly packed electronic components by providing a clearance between the elements and reducing unintended clearance between interacting components, say cooling bar and electronic components.

[00030] In one embodiment, the elongated base, and the plurality of walls are integrally formed. It is an aspect that the contact between the electronic components, cooling bar, or heat sink is not affected even when the casing is mounted on a motor vehicle operated in different terrains.

[00031] It is a feature of the present subject matter that positioning member includes one or more bracing member(s) that extend away from the elongated base and the bracing members support the cooling bar. The cooling bar, which is heat conducting member is placed away from the first board to avoid any undesired conduction (electrical or thermal with the board) and is also retained in a first orientation for easy assembly. For example, the cooling bar may be used as the mounting portion for slidably mounting the circuit assembly on to the casing. However, the circuit assembly may be mounted to the casing by at least one of slidable mounting, fixed mounting, or detachable-attached mounting. In one embodiment, the bracing members are integrally formed with the elongated base.

[00032] In one embodiment, the positioning member is made of a thermally non-conducting material and electrically non-conducting material whereby it can withstand thermal exposure and does not electrically conduct.

[00033] In one embodiment, the positioning member is secured to the first board through hook portion, that provides basic fit to the first board without need for additional components. Further, the positioning member includes a securing portion through which it can be secured to the first board, wherein a spacer secured to the first board may be used to hold the positioning member in a desired position. Thus, the positioning member is securely mounted to the first board through at least one of the aforementioned means thereby holding the electronic components in a first orientation for assembly and for soldering. [00034] In one embodiment, the positioning member includes a partition wall against which another electronic component, which is high current carrying element, can be disposed. For example, the another electronic component can be a stud connector forming the cable mounting portion, which receives a high current carrying cable. The stud connector is isolated from other electronic components disposed by the partition wall.

[00035] It is a feature that the positioning member is capable of withstanding various operating conditions of the vehicle by retaining the desired orientation of various elements/ components of the circuit assembly thereby providing reliable functioning of the circuit which in turn provides a reliable vehicle.

[00036] It is a feature of the present subject matter that the elongated base extends along at least a length of the board, wherein the elongated base can have a substantially straight profile, a crisscross profile, or any known geometric profile basing on the board layout.

[00037] In effect, the positioning member for the circuit assembly enables ease of assembly and ease of soldering of the electronic components. Further, the positioning member also offers effective functioning of the components due to desired orientation of components thereby offering improved thermal conduction/ contact and also electrical connectivity. Also, the secured mounting of the components improves life of the components due to vibration or any external impacts. Thus, the present subject matter offers improvement from the assembly till improving life of the components due to secure mounting. This offers reliable function of the circuit assembly. Such circuit assembly deployed in a motor vehicle would offer effective function of the motor vehicle functions.

[00038] The term ‘electronic component’ used herein is not limiting and includes a discrete component, an integrated circuit/chip, an electrical component, or the like.

[00039] The aforesaid and other advantages of the present subject matter would be described in greater detail in conjunction with the figures in the following description. [00040] Fig. 1 illustrates a left side view of an exemplary motor vehicle (100), in accordance with an embodiment of the present subject matter. The vehicle (100) illustrated has a frame member (105). In the present embodiment, the frame member (105) is a step-through type frame member (105) that includes a head tube (106), and a main frame (107) that extend rearwardly downward from an anterior portion of the head tube (106). The main frame (107) extends inclinedly rearward to a rear portion of the vehicle (100).

[00041] The vehicle (100) includes an internal combustion engine (115) acting as prime mover that is connected to the frame member (105). In the present implementation, the IC engine (115) is mounted on a swing arm (135), which maybe swingably connected to the main frame (107) using a toggle link. The vehicle (100) also includes a traction motor (120), which is another prime mover. In a preferred embodiment, the traction motor (120) is hub mounted to a rear wheel (125). A front wheel (110) is rotatably supported by the frame member (105). The front wheel (110) is connected to a handle bar assembly (130) that enables maneuvering of the vehicle (100).

[00042] The vehicle (100) includes a high capacity on-board battery (not shown) that drives the traction motor (120). The high capacity battery can be disposed at a front portion, near a step-through portion, or at a rear portion of the vehicle (100). The high capacity battery is supported by the frame member (105) and the vehicle (100) includes plurality of body panels, mounted to the frame member (105) and covering various components of the vehicle (100). The plurality of body panels includes a front panel (140), a leg shield (141), an under-seat cover (142), and a left and a right side panel (143). A glove box may be mounted to a leg shield (141).

[00043] A floorboard (145) is provided at the step-through portion defined by the main frame (107). A seat assembly (150) is disposed rearward to the see- through portion and is mounted to the main frame (107). One or more suspension(s) (not shown) connect the wheels (110, 125) to the frame member (105) and help in providing comfortable ride. The vehicle (100) comprises of additional electrical and electronic components including a headlight (155), a taillight (156), a starter motor (not shown), a horn etc. Also, the vehicle (100) includes a circuit assembly (200) for controlling various electrical and electronic components thereof.

[00044] Fig. 2 (a) depicts a perspective view of the housing for a circuit assembly, in accordance with an embodiment of the present subject matter. Fig. 2 (b) depicts another perspective view of the housing (without the cover), in accordance with the embodiment of Fig. 2 (a). The housing (250) includes a casing (251) and one or more covers (252). The casing (251) is made of a rigid material including any known metal like Aluminum ( Al ), an alloy with Aluminum being the major element, or the like material. Preferably the casing (251) is an extruded part, which is easier to manufacture. However, a casted part may also be used. The covers (252) are capable of sealing the open portions of the casing (251) and are secured thereat through multiple fasteners (255). The covers (252) are adapted to support and accommodate one or more cable mounting portions (253, 254). A circuit assembly (200) can be securely mounted to the housing (250), where the housing (250) encloses the circuit assembly (200). In one embodiment, the circuit assembly (200) can be slidably mounted to the housing (250), wherein the circuit assembly (200) includes one or more boards that may get slid into the casing (251). The casing (251) includes a mounting slot (256) for mounting the housing (250) to the vehicle (100) or to any other system.

[00045] Fig. 3 depicts a perspective view of a portion of the circuit assembly (200), in accordance with an embodiment of the present subject matter. The circuit assembly (200) includes one or more boards forming the physical circuit. The term ‘board’ can be a printed circuit board (PCB) or a similar supporting structure capable of holding electronic components or a board integrated with electronic components/circuitry. The circuit assembly (200) may include plurality of boards that are physically connected to each other, placed liked layers, using a spacer (218) (shown in Fig. 6). In the depicted illustration, the circuit assembly (200) includes a first board (205) (partial circuit assembly shown in the current embodiment). The first board (205) has a substantially planar surface and is capable of supporting one or more electronic components (207) thereon. In addition, the first board (205) may include embedded connections that establish electrical connections between the

1 one or more components mounted thereon. For example, the electronic components (207) may include switching components like metal oxide semiconductor field effect transistor (MOSFET), any other switching element like transistor, or any known switching element that are soldered to the first board (205). The electronic component (207) like the MOSFET typically includes a body (271), contact legs

(272) (viz. source, drain, and gate for a MOSFET), and a heat sink-contact portion

(273) (shown in Fig. 5).

[00046] Further, the circuit assembly (200) includes a cooling bar (208), which is in thermal contact with the heat sink-contact portion (273) of the electronic component (207). The cooling bar (208) is in further contact with the casing (251) of the housing (250) (shown in Fig. 2 (b)) whereby the heat dissipated from the electronic components (207) is transferred to the casing (251) through the cooling bar (208) by conduction. Further, the casing (251) is provided with plurality of fins (not shown) that enable in cooling through radiation. Thus, the heat is dissipated from the electronic components (207) to the atmosphere through the casing (251). The one or more electronic components (207) are kept in thermal contact with the cooling bar (208) through a pre-load member(s) (209) without the need for fasteners like bolts or screws. The pre-load member(s) (209) can be metallic clips or the like that hold the electronic component (207) and the cooling bar (208) close to each other. In the depicted embodiment, the pre-load member (209) is a U- shaped metallic clip that exerts force on the body (271) of the electronic component (207) and the cooling bar (208) holding them in contact.

[00047] The circuit assembly (200) includes a positioning member (210) that is capable of supporting the one or more electronic components (207), and the cooling bar (208) in a first orientation. Fig. 4 depicts an isometric view of the positioning member (210), in accordance with an embodiment of the present subject matter. The positioning member (210) includes an elongated base (211) extending along at least a length (212) of a first board (205) of the circuit assembly (200), and the one or more electronic components (207) are supported by the first board (205). The length (212) in the depicted embodiment is taken along long axis of the circuit board along which the positioning member is disposed. However, the

1 length may be taken along a short axis or inclinedly thereof depending on the placement of the positioning member. The elongated base (211) is provided with one or more slotted portion(s) (213), wherein the one or more electronic components (207) are securely supported at the slotted portion(s) (213) on the first board (205) in the first orientation. In one embodiment, the slotted portions (213) offer an interference fit of the electronic components (207) disposed thereat whereby the electronic component(s) (207) are retained in the pre-determined orientation, which enables in ease of soldering. Further, the elongated base (211) is capable of supporting the electronic components (207) at a pre-determined height and the electronic components like the MOSFET may get seated on the elongated base (211). The first orientation includes the vertical orientation, which is the height, and without any tilt towards adjacent components.

[00048] Further, the positioning member (210) includes plurality of walls (214), supported by elongated base (211), that are capable of separating the one or more electronic components (207) from each other. In the depicted embodiment, the elongated base (211) is capable of being mounted to the first board (205) and the plurality of walls (214) are extending orthogonally and are spaced apart so as to accommodate at least a portion of each electronic component at a gap (215) formed between the adjacently disposed walls of the plurality of walls (214) disposed adjacent to each other. In the present embodiment, the electronic components like the MOSFETs are vertical mounted type, wherein the contact legs (272) are accommodated at the slotted portion (213) and the body (271) is accommodated at the gap (215). In one embodiment, the slotted portion can be elongated single slot. In another embodiment, the slotted portion can be multiple independent slots capable of receiving the contact legs (272) individually. Thus, the electronic components are securely located on the first board (205) in a first orientation during assembly of the electronic components (207) on the first board (205). This helps the assembly personnel to electrically connect or solder the electronic components without the need for any adjustment. Further, the electronic components (207) are located at a desired height, on the first board (205), so that the electronic components (207) get soldered in the first orientation enabling

1 optimum functioning with adjacent components. For example, the electronic components (207) when located at a first orientation, the electronic component

(207) enables optimum conductive contact with the cooling bar (208) by virtue of disposing the electronic components (207) in the first orientation. Further, optimum contact is achieved with the cooling bar (208) whereby optimum heat transfer and heat dissipation is achieved.

[00049] The positioning member (210) includes a one or more securing portions (217) provided selectively along a length thereof for securing the positioning member (210) at a preferred location on the first board (205). Further, the positioning member (210) includes one or more bracing member(s) (216) that extend away from the elongated base (211), wherein the bracing members (216) support the cooling bar (208) at a desired position with reference to the electronic components (207) and the casing (251), in conjunction with which the cooling bar

(208) works. In the present embodiment, the bracing members (216) extend orthogonally to the elongated base (211), in a second direction away from the direction of extension of the plurality of walls (214) referred to as first direction. The plurality of walls (214) extending in the first direction, which is the orthogonal direction extending substantially parallel to electronic component (207). The bracing members (216) extend orthogonally in a second direction, which is different from the first direction, which is orthogonally along the surface of the first board (205) especially towards outward side of the first board (205). The bracing members (216) are supported by the first board (205) and at an elevation to match with mounting portions (not shown) on the casing (251) (shown in Fig. 2

(b))·

[00050] Fig. 5 depicts a sectional view of the circuit assembly (200) with selected parts taken along axis A- A’, in accordance with the embodiment of Fig. 4. The positioning member (210), which can be made of a rigid or a cushioning material, is provided in the circuit assembly (200). Further, the positioning member (210) is made of a material capable of withstanding temperature as the electronic components get heated up during operation. In the present embodiment, the positioning member (210) is extending along the length of the first board (205) and

1 is supported thereon. The positioning member (210) is secured to the first board (205) through securing portion (217), which is preferably having a non-circular inner peripheral profile. In one embodiment, a rigid member is enmolded at the securing portion (217) so as to securely support the spacer or the like without any deformation.

[00051] As depicted in the embodiment of Fig. 5, the contact legs (272) are supported by the positioning member (210) and the contact legs (272) extend through the first board (205) so that the soldering could be done on other side of the first board (205). Further, at least a portion of the body (271) of the electronic component (207) is accommodated at the gap (215) formed between adjacently disposed walls (214). The cooling bar (208) supported by the positioning member (210) is positioning to be in contact with the heat sink-contact portion (273) of the electronic component (207). Further, the positioning member (210) includes a slot (222).

[00052] Fig. 6 depicts a perspective view of a portion of the circuit assembly (200), in accordance with the embodiment of Fig. 4. The securing portion (217) includes a slot (222) to receive a spacer (218), which is having an outer profile matching an inner profile of the slot (222) of the securing portion. The inner profile of the slot (222) can be any known geometric regular or irregular profile, which is other than a circular profile, or a circular profile with locking provision to enable non-rotation, acting as anti -rotation member, of the spacers (218) with respect to the securing portion (217). Similarly, the spacer (218) is provided with an outer profile matching the inner profile of the slot (222) for engagement. Subsequently, using a bolt (235) or the like, the spacer (218) is secured to the first board (205) whereby the spacers (218), the first board (205) are mounted to the first board (205) in a pre-determined position. Similarly, a second board (not shown) is provided at other end of spacer and the second board is also secured to the spacer(s). Thus, two or more boards are secured to one another and spaced apart to form the circuit assembly (200). The slot (222) is capable of restricting rotation of the spacer (218).

[00053] Further, in an embodiment, the positioning member (210) includes a partition wall (219) against which another electronic component can be disposed.

1 For example, the another electronic component can be a stud connector forming the cable mounting portion (253).

[00054] Fig. 7 depicts a portion of the circuit assembly and an exploded view thereof, in accordance with an embodiment of the present subject matter. The circuit assembly (200) includes one or more circuit boards, wherein the current embodiment depicts a first board (205). The positioning member (210) is provided for positioning one or more electronic components (207) in the circuit-assembly (200) in a first orientation. The positioning member (210) extends along at least a length of the first board (205). For example, in the depicted embodiment, the positioning member (210) is disposed substantially along the length of the first board (205) to support the one or more electronic components (207) that are spread out about the first board (205). Such one or more positioning members may be used depending on feasibility. In an embodiment, the circuit assembly (200) may include plurality of boards that support the various electronic components that are spread out about the boards.

[00055] The positioning member (210) includes the elongated base (211) that is substantially placed to support the electronic components (207), wherein the elongated base (211) is placed over one or more apertures (220), provided on the first board (205,) at which the electronic components (207) get soldered from the other side. Further, the elongated base (211) includes one or more slotted portion(s) (213) that are provided to support each of the electronic components (207). In one embodiment, the slotted portion (213) securely holds the electronic component (207) thereat in a first orientation, where the slotted portion (213) offers interference fit to support the contact legs (272) of the electronic component (207). Thus, during assembly process, especially during soldering of the electronic components (207) to the first board (205), the electronic components (207) are retained in a first orientation, say at desired height with respect to the first board (205) at the aperture (220), enabling precise soldering. Also, retaining the electronic components (207) at the first orientation, like height, helps it in optimal contact and function with other elements of the circuit assembly (200) say the cooling bar (208). Thus, the aspects like heat dissipation and cooling of the

1 components can be optimized thereby improving the working efficiency of the system. In one embodiment, a contact plate (221) may be disposed between the electronic components (207) and the cooling bar (208) to improve heat distribution. Furthermore, the positioning member (210) that enables such precision assembly providing optimum compact packaging thereof in the casing (251), of the housing (250), as the components even if tightly packed do not interfere with other components on the same board or with the components from an adjacent board.

[00056] The elongated base (211) supports the plurality of walls (214) that are capable of separating the one or more electronic components (207) from each other, which are disposed adjacently. Here, the term‘adjacently’ implies that the electronic components maybe disposed next to each other or in line and may not be touching with each other. In the depicted embodiment, the elongated base (211) is mounted to the first board (205) and the plurality of walls (214) are extending orthogonally and are spaced apart so as to accommodate each electronic component at the gap (215) formed therebetween. Thus, the plurality of walls (214) isolates the electronic components (207) from each other thereby reducing any heat transfer therebetween. Also, the plurality of walls (214) eliminate any physical contact or electrical contact between the elements that could result in short circuit or unwanted heat transfer. Thus, the circuit assembly (200) can be securely mounted onto a motor vehicle (100) as the circuit assembly (200) can retain the position of the electronic components (207) even in worse conditions corresponding to vehicle vibrations that could get transferred to the housing (250).

[00057] In an embodiment, the positioning member (210) is an integrated member formed as a single piece enabling ease of assembly. The positioning member (210) includes one or more bracing members (216) that are capable of supporting the cooling bar (208) at a desired location, say at a desired height to match the height of the heat sink-contact portion (273) of the electronic components (207). Also, the positioning member (210), which supports the electronic components (207) and also the cooling bar (208) maintains a pre determined distance between them to enable optimum contact for heat transfer. Further, the bracing members (216) of the positioning member (210) securely holds

1 the cooling bar (208), which is connected to the electronic components (207) through pre-load member (209), so as to be in contact with the casing (251) of the housing (250) for heat dissipation. In an embodiment, the circuit assembly (200), in assembled form, can be slidable mounted to the casing (251). The one or more boards (205) and the cooling bar (208) act as the contact portion for sliding.

[00058] Fig. 8 depicts a positioning member (280), in accordance with another embodiment of the present subject matter. The positioning member (280) includes an elongated base (211), plurality of walls (214), bracing members (216), and securing portion (217) are integrally formed. Further, the hook portion(s) (225) provided at substantial ends of the positioning member (280), is adapted to hold the positioning member (280) to the first board (205). Additionally, the positioning member (210) is secured to the first board through the spacer (218), as shown in Fig. 6.

[00059] Fig. 9 depicts a positioning member (281), in accordance with yet another embodiment of the present subject matter. The positioning member (281) is adapted for few electronic components, wherein an elongated base (282) that is having a crisscross profile, which is adapted to support specific type electronic components like sensors (not shown). The elongated base (282) is extending along at least an area of a board. The elongated base (282) is provided with slotted portion(s) (213) to support the electronic components thereat. Thus, depending upon electronic components and board layout, the positioning member is adapted accordingly.

[00060] It is to be understood that the aspects of the embodiment(s) are not necessarily limited to the features described herein. Many modifications and variations of the present subject matter are possible in the light of above disclosure. Therefore, within the scope of claims of the present subject matter, the present disclosure may be practiced other than as specifically described.

1 List of reference signs:

100 vehicle 214 plurality of walls

105 frame member 215 gap

106 head tube 216 bracing member 107 main frame 35 217 securing portion

115 internal combustion 218 spacer

engine 219 partition wall

120 traction motor 220 apertures

125 rear wheel 221 contact plate

130 handlebar assembly 40 222 slot

135 structural member 225 hook portion

140 front panel 235 bolt

141 leg shield 250 housing

142 under- seat cover 251 casing

143 side panel 45 252 cover(s)

145 floorboard 253/254 cable mounting

150 seat assembly portion

155 headlight 255 fastener

156 taillight 256 unit mounting slot 200 circuit assembly 50 271 body

205 first board(s) 272 contact legs

207 electronic 273 heat sink-contact portion component(s)

208 cooling bar

209 pre-load member

210/280/281

positioning member

211/282

elongated base

212 length

213 slotted portion(s)

1