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Title:
AN INDUCTIVE CHARGING ANTENNA CONSTRUCTION AND A METHOD FOR MANUFACTURING THE SAME, AND A WIRELESS POWER MODULE
Document Type and Number:
WIPO Patent Application WO/2019/086455
Kind Code:
A1
Abstract:
The present invention relates to an antenna construction and a method for manufacturing the same, said antenna construction comprising: a printed circuit board (PCB) provided with electric components for controlling operations of the inductive charging antenna; an inductive charging antenna assembly; and a shielding layer; wherein substantially all of the electric components are provided on a first side of the printed circuit board, the antenna assembly being provided on a second side of the printed circuit board opposite to the first side; and wherein the shielding layer is grounded and located between the antenna assembly and the printed circuit board. The present invention also provides a wireless charging module having the antenna construction.

Inventors:
SCHULER, Stéphane (Ltd1 North Junyi Ind. Park, Huaide Vil.,Fuyong Town, Baoan Dist, Shenzhen Guangdong 8, 518128, CN)
Application Number:
EP2018/079712
Publication Date:
May 09, 2019
Filing Date:
October 30, 2018
Export Citation:
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Assignee:
VALEO COMFORT AND DRIVING ASSISTANCE (76 rue Auguste Perret - ZI Europarc, Créteil Cedex, Créteil Cedex, 94046, FR)
International Classes:
H02J50/12; H01F27/36; H02J50/70; H04B15/04; H05K1/02; H05K9/00
Domestic Patent References:
WO2017136076A12017-08-10
WO2015077782A12015-05-28
Foreign References:
US20160315503A12016-10-27
US20130015718A12013-01-17
US20120049991A12012-03-01
US20150244064A12015-08-27
Attorney, Agent or Firm:
GRUNBERG, Patrick (Propriété Intellectuelle7, rue Auguste Perret - ZI Europarc Créteil Cedex, 94046, FR)
Download PDF:
Claims:
CLAIMS:

1. An inductive charging antenna construction, comprising:

a printed circuit board (PCB) populated with electric components to control the inductive charging antenna operation,

an inductive charging antenna assembly, wherein

substantially all of the electric components are populated on a first side of the printed circuit board;

the antenna assembly is populated on a second side of the printed circuit board opposite to the first side; and

a shielding layer, wherein the shielding layer is grounded and located between the antenna assembly and the printed circuit board.

2. The inductive charging antenna construction according to claim 1, characterized in that

the shielding layer is a ground layer of the printed circuit board covering the substantially entire surface of the printed circuit board.

3. The inductive charging antenna construction according to claim 1, characterized in that

the shielding layer is a grounded chassis supporting the antenna assembly.

4. The inductive charging antenna construction according to claim 3, characterized in that

the chassis is a stamped metal plate.

5. The inductive charging antenna construction according to claim 3, characterized in that

the chassis has at least one contact portion through which the chassis is electrically connected to a grounded pad of the printed circuit board.

6. The inductive charging antenna construction according to claim 5, characterized in that

the chassis is surface mounted or through-hole mounted on a grounded pad of the printed circuit board through the at least one contact portion.

7. The inductive charging antenna construction according to any one of claims 1-6, characterized in that

the antenna assembly comprises:

a flexible or rigid magnetic isolation sheet attached to the shielding layer; and

at least one coil provided on the magnetic isolation sheet, wherein the magnetic isolation sheet is located between the at least one coil and the shielding layer.

8. The inductive charging antenna construction according to claim 7, characterized in that

the flexible or rigid magnetic isolation sheet is made of ferrite.

9. The inductive charging antenna construction according to claim 7, characterized in that

each of the coils have electrical connecting terminals through which the coils are electrically connected to the printed circuit board.

10. The inductive charging antenna construction according to claim 9, characterized in that

the electrical connecting terminals of the coils are electrically connected to the printed circuit board through holes or notches formed in the magnetic isolation sheet and the shielding layer respectively.

11. The inductive charging antenna construction according to claim 9, characterized in that

the electrical connecting terminals are surface mounted or through-hole mounted on the printed circuit board.

12. The antenna construction according to claim 7, characterized in that

the antenna assembly further comprises:

at least one temperature sensing element,

wherein each of the temperature sensing elements is surface-assembled on the second side of the printed circuit board and located near the center of the respective coil.

13. The antenna construction according to claim 12, characterized in that

the temperature sensing element is a negative temperature coefficient element.

14. The antenna construction according to any one of claims 1-6, characterized in that

the printed circuit board is a multilayer printed circuit board.

15. A wireless power module, comprising the antenna construction according to any of the preceding claims.

16. A method for manufacturing an inductive charging antenna construction, comprising:

providing a printed circuit board;

providing substantially all of the electric components for controlling the inductive charging antenna operation on a first side of the printed circuit board;

covering a ground layer of the printed circuit board on the substantially entire surface of the printed circuit board which is on a second side opposite to the first side;

providing a magnetic isolation sheet on the grounded layer;

providing at least one coil on the magnetic isolation sheet and connecting it directly to the printed circuit board by soldering.

17. A method for manufacturing an inductive charging antenna construction, comprising:

providing a printed circuit board;

providing substantially all of the electric components for controlling the inductive charging antenna operation on a first side of the printed circuit board;

providing a chassis on a second side of the printed circuit board opposite to the first side, the chassis being soldered to the printed circuit board in at least one point ;

providing a magnetic isolation sheet on the chassis;

providing at least one coils on the magnetic isolation sheet and connecting it directly to the printed circuit board by soldering,

wherein the chassis is located between the printed circuit board and the magnetic isolation sheet.

18. A method for manufacturing an inductive charging antenna construction, comprising: providing a printed circuit board;

providing substantially all of the electric components for controlling the inductive charging antenna operation on a first side of the printed circuit board;

providing a preassembly on a second side of the printed circuit board opposite to the first side ;

wherein the preassembly comprises:

a grounded chassis;

a magnetic isolation sheet provided on the chassis; and

at least one coil provided on the magnetic isolation sheet;

wherein the chassis is located between the printed circuit board and the magnetic isolation sheet, and the at least one coil is directly connected to the printed circuit board by soldering.

Description:
An inductive charging antenna construction and a method for manufacturing the same, and a wireless power module

Technical Field

The present invention relates to an antenna construction, and particularly to an antenna construction for wireless energy transmission.

Background

Wireless energy transmission refers to non-contact energy transmission between a transmitter and a receiver. Wireless chargers based on wireless energy transmission have good prospects in the application of consumer electronic products.

As shown in Figures la and lb, an inductive charging antenna construction 100 for a wireless charger is disclosed in the prior art, which comprises a printed circuit board 110 (PCB), a plurality of electrical components 120, an antenna assembly, and a chassis 130 supporting the antenna assembly. The plurality of electrical components 120 are used to control the operation of the inductive charging antenna and are located on both sides of the PCB 110 (only a part of the electrical components are shown in the Figures). The antenna assembly comprises a ferrite sheet 140 and three stacked coils 150. The chassis 130 is grounded and serves as a shielding layer between the PCB 110 and the antenna assembly. Since the electrical components 120 are disposed on both sides of the PCB 110, it is necessary to support the chassis 130 to a certain height to provide space for receiving the electrical components 120. In addition, a connector 160 is needed to electrically connect the coil 150 to the PCB 110.

The antenna construction 100 according to the prior art described above is bulky. Furthermore, since the connector 160 is typically manually mounted into the antenna construction 100, full automated production cannot be achieved, resulting in a higher cost.

Summary of the invention

In order to solve the problems existing in the prior art, an object of the present invention is to provide an inductive charging antenna construction and a method for manufacturing the same, the charging antenna construction being small in size, low in cost, and contributing to fully automatic production. In addition, the present invention also provides a wireless charging module comprising the inductive charging antenna construction.

According to one aspect of the disclosure, a inductive charging antenna construction is provided, comprising: a printed circuit board (PCB) populated with electric components to control the inductive charging antenna operation; an inductive charging antenna assembly; and a shielding layer; wherein substantially all of the electric components are populated on a first side of the printed circuit board; the antenna assembly is populated on a second side of the printed circuit board opposite to the first side; and the shielding layer is grounded and located between the antenna assembly and the printed circuit board.

Preferably, the shielding layer is a ground layer of the printed circuit board covering the substantially entire surface of the printed circuit board.

Preferably, the shielding layer is a grounded chassis supporting the antenna assembly.

Preferably, the chassis is a stamped metal plate.

Preferably, the chassis has at least one contact portion through which the chassis is electrically connected to a grounded pad of the printed circuit board.

Preferably, the chassis is surface-mounted or through-hole mounted on a grounded pad of the printed circuit board through the at least one contact portion.

Preferably, the antenna assembly comprises: a flexible or rigid magnetic isolation sheet attached to the shielding layer; and at least one coil provided on the magnetic isolation sheet, wherein the magnetic isolation sheet is located between the at least one coil and the shielding layer.

Preferably, the flexible or rigid magnetic isolation sheet is made of ferrite.

Preferably, each of the coils has electrical connecting terminals through which the coils are electrically connected to the printed circuit board.

Preferably, the electrical connecting terminals of the coils are electrically connected to the printed circuit board through holes or notches formed in the magnetic isolation sheet and the shielding layer respectively.

Preferably, the electrical connecting terminals are surface-mounted or through-hole mounted to the printed circuit board.

Preferably, the antenna assembly further comprises: at least one temperature sensing element, wherein each of the temperature sensing elements is surface-assembled on the second side of the printed circuit board and located near the center of the respective coil.

Preferably, the temperature sensing element is negative temperature coefficient element.

Preferably, the printed circuit board is a multilayer printed circuit board.

According to one aspect of the present disclosure, a wireless power module is provided, comprising the antenna construction as described above. According to another aspect of the present disclosure, a method for manufacturing an inductive charging antenna construction is proposed, comprising: providing a printed circuit board; providing substantially all of the electric components for controlling the the inductive charging antenna operations on a first side of the printed circuit board; covering a ground layer of the printed circuit board on the substantially entire surface of the printed circuit board which is on a second side opposite to the first side; providing a magnetic isolation sheet on the grounded layer; and providing at least one coil on the magnetic isolation sheet and connecting the at least one coil directly to the printed circuit board by soldering.

According to another aspect of the present disclosure, a method for manufacturing an inductive charging antenna construction is proposed, comprising: providing a printed circuit board; providing substantially all of electric components for controlling the the inductive charging antenna operations on a first side of the printed circuit board; providing a chassis on a second side of the printed circuit board opposite to the first side, the chassis being soldered to the printed circuit board in at least one point; providing a magnetic isolation sheet on the chassis; and providing at least one coil on the magnetic isolation sheet and connecting the at least one coil directly to the printed circuit board by soldering, wherein the chassis is located between the printed circuit board and the magnetic isolation sheet.

According to another aspect of the present disclosure, a method for manufacturing an inductive charging antenna construction is proposed, comprising: providing a printed circuit board; providing substantially all of the electric components for controlling the the inductive charging antenna operations on a first side of the printed circuit board; providing a preassembly on a second side of the printed circuit board opposite to the first side; wherein the preassembly comprises: a grounded chassis; a magnetic isolation sheet provided on the chassis; and at least one coil provided on the magnetic isolation sheet; wherein the chassis is located between the printed circuit board and the magnetic isolation sheet, and the at least one coil is directly connected to the printed circuit board by soldering.

Description of Drawings

In order to more clearly explain the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings show only certain embodiments of the present invention, and therefore they should not be considered as a limitation on the scope, and those skilled in the art can obtain other related drawings according to the drawings without any creative efforts.

Figures la and lb show a perspective view of an inductive charging antenna construction according to the prior art;

Figure 2a shows a perspective view of an inductive charging antenna construction according to an embodiment of the present invention;

Figure 2b shows a perspective view of the inductive charging antenna construction of Figure 2a in accordance with the present invention, wherein a portion of the magnetic shield and a portion of the chassis are not depicted to clearly illustrate the inductive charging antenna construction;

Figure 2c shows a perspective view of the inductive charging antenna construction of Figure 2a in accordance with the present invention, wherein the magnetic isolation sheet and a part of the coils are not depicted to clearly show the chassis and temperature sensing elements; Figure 3 a shows a perspective view of an inductive charging antenna construction in accordance with another embodiment of the present invention;

Figures 3b to 3d show exploded perspective views of the inductive charging antenna construction of Figure 3a in accordance with the present invention;

Figure 4a shows a perspective view of an inductive charging antenna construction in accordance with another embodiment of the present invention;

Figures 4b to 4d illustrate an exploded perspective view of the inductive charging antenna construction of Figure 4a in accordance with the present invention;

Figure 5 shows a perspective view of an inductive charging antenna construction in accordance with another embodiment of the present invention.

Detailed Description

Hereinafter, an inductive charging antenna construction, a method for manufacturing the inductive charging antenna construction, and a wireless charging module including the inductive charging antenna construction according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention more clearly, the technical solutions in the embodiments of the present invention are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present invention. It is apparent that the described embodiments are a part of the embodiments of the present invention, rather than all of the embodiments. Therefore, the following detailed description of embodiments of the present invention provided in combination with the accompanying drawings is not intended to limit the scope of the invention claimed, but is merely representative of selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Figures 2a to 2c illustrate perspective views of an inductive charging antenna construction 200 in accordance with an embodiment of the present invention. The inductive charging antenna construction 200 includes a PCB 210, electrical components 220, an antenna assembly, and a shielding layer.

Substantially all of the electrical components 220 are disposed on a first side of the PCB 210, which is shown in Figures 2a through 2c as the lower side of the PCB 210, and the electrical components 220 form a printed circuit board assembly (PCB A) with the PCB 210 to control the operation of the inductive charging antenna. The antenna assembly is disposed on a second side of the PCB 210, which is shown as the upper side of the PCB 210 in Figures 2a through 2c.

In this embodiment, the shielding layer is a chassis 230 for supporting the antenna assembly. The chassis 230 is grounded and disposed between the PCB 210 and the antenna assembly to avoid interference between the PCB A consisting of the PCB 210 and the electrical components 210 and the antenna assembly. That is to say, the chassis 230 is disposed on the second side of the PCB 210. The chassis 230 can be a substantially flat metal plate.

As can be seen from Figures 2b and 2c, the chassis 230 has contact portions 231, 232 so as to be surface-mounted by them on the ground pads on the surface of the PCB 210. Here, the chassis 230 may be a stamped metal plate.

The electrical components 220 are disposed on a first side of PCB 210 such that it can be well shielded. Since the chassis 230 is electrically connected to the PCB 210 directly without using a connector such as the connector 160, the volume, cost, and weight of the inductive charging antenna construction 200 are thus reduced. In addition, the above-described mounting method in a surface-mounting manner allows for automated assembly of the chassis 230, for example, by reflow soldering, thereby increasing the automation and yield of the antenna construction.

In the present embodiment, the antenna assembly comprises a magnetic isolation sheet 240 and three coils 250, wherein the magnetic isolation sheet 240 is located between the coil 250 and the chassis 230.

The magnetic isolation sheet 240 may be made of ferrite and is adhered to the chassis 230. Further, the magnetic isolation sheet 240 may be rigid or flexible. The magnetic isolation sheet 240 can be rigid. Most of the current transmitter applications use rigid ferrite plates (which are approximately 2 mm in thickness and thus rigid) as magnetic isolation components. In order to reduce the thickness and weight of the inductive charging antenna construction 200 and thereby reducing the required space and cost, the thickness of the magnetic isolation sheet 240 can be reduced to become flexible. It should be noted, however, that the performance of the magnetic isolation sheet 240 is degraded as the thickness is reduced. Here, the thickness of the flexible magnetic isolation sheet 240 is preferably to be less than 0.5 mm, specifically, preferably to be 0.2 mm, 0.3 mm or 0.5 mm. In order to prevent breakage, the magnetic isolation sheet 240 may be encapsulated between the PET films.

It should be understood that the number of coils 250 is not limited to be three and may be one, two or more than three. Here, three coils 250 are disposed on the magnetic isolation sheet 240, wherein one coil 250 is stacked on the other two coils 250. The coils 250 can be a flat stamped coil (for example, the coil described in WO2015/077782A1) in order to reduce the volume of the antenna construction, or they can be in other forms, for example, in the form of a litz wire.

In the present embodiment, the coils 250 may include a coil body 251 and an electrical connecting terminal 252. In the present embodiment, the coil body 251 can be adhered to the magnetic isolation sheet 240. The coils 250 are electrically connected to the PCB 210 through the electrical connecting terminals 252 to be controlled by the PCB A. Specifically, the electrical connecting terminals 252 may be surface-mounted on the PCB 210. Holes (or notches) 233 and holes (or notches) 241 may be provided in the chassis 230 and in the magnetic isolation sheet 240, respectively. The electrical connecting terminals 252 are surface-mounted to the PCB 210 through the holes 233 and the holes 241.

Furthermore, as shown in Figure 2c, the antenna assembly may also comprise three temperature sensing elements 270, for measuring the temperature of the coils 250, which temperature sensing elements 270 may be negative temperature coefficient (NTC) elements. Each temperature sensing element 270 is electrically connected (preferably, surface-assembled) to the PCB 210 and disposed near the center of the respective coil 250. The temperature sensing elements 270 are connected to PCB 210 by a hole (or notch) 234 in the chassis 230.

It should be understood that substantially all of the electrical components 220 are disposed on the first side of the PCB 210. However, electrical components with smaller dimensions may be allowed to be located on the second side of the PCB 210, such as by passing through holes or notches in the chassis 230, as long as their influence on the shielding effect of the chassis 230 meets the design requirements. Further, the printed circuit board 210 may be a multilayer printed circuit board.

Different wireless charging principles will result in different antenna assembly constructions, and thus, the configuration of the antenna assembly is not limited to that of the antenna assembly according to the embodiments of the present invention. In addition, the inductive charging antenna construction of the present disclosure may be designed according to the QI standard of the Wireless Power Consortium (WPC), or may be designed according to other standards.

Figures 3a to 3d illustrate perspective views of an inductive charging antenna construction 200 in accordance with another embodiment of the present invention. In the other embodiment describing the antenna construction with reference to FIGS. 3a to 3d, for convenience of description, the descriptionsof the antenna construction of this embodiment which are identical to or which can be easily understood from the embodiment shown in FIGS. 2a to 2c will be omitted.

In the present embodiment, the inductive charging antenna construction 300 comprises a PCB 310, electrical components 320, an antenna assembly, and a shielding layer, wherein the shielding layer is a chassis 330. The antenna assembly comprises a magnetic isolation sheet 340 and three coils 350, wherein the magnetic isolation sheet 340 is located between the coils 350 and the chassis 330.

What is different from the inductive charging antenna construction 200 shown in Figures 2a to 2d is in that the coil 350 includes a coil body 351 and electrical connecting terminals 252 through which the coil 350 is through-hole mounted to the PCB 310 so as to be electrically connected with the PCB 310. Specifically, the electrical connecting terminals 352 of the coil 350 are configured as fork- shaped structure extending perpendicular to the plane of the coil body 351, and each of the fork-shaped electrical connecting terminals 352 has two pin-shaped branches 353. Each of the branches 353 passes through a hole formed in the magnetic isolation sheet 340 and in the chassis 330 respectively, is inserted into a through hole 311 formed in the PCB 310 , and is soldered to the PCB 310.

Figures 4a to 4d illustrate perspective views of an inductive charging antenna construction 400 in accordance with another embodiment of the present invention. In another embodiment of the antenna construction explained with reference to Figures 4a to 4d, for convenience of description, the descriptions of the antenna construction of this embodiment which are identical to or which can be easily understood from the embodiment shown in FIGS. 2a to 2c will be omitted.

In the present embodiment, the inductive charging antenna construction 400 comprises a PCB 410, electrical components 420, an antenna assembly, and a shielding layer, wherein the shielding layer is a chassis 430. The antenna assembly comprises a magnetic isolation sheet 440 and three coils 450, wherein the magnetic isolation sheet 440 is located between the coils 450 and the chassis 430.

What is different from the inductive charging antenna construction shown in Figures 2a to 2d is in that a coil 450 comprises a coil body 451, and electrical connecting terminals 452 through which the coil 450 is surface-mounted to the PCB 410 to be electrically connected to the PCB 410. Specifically, the electrical connecting terminals 452 of the coil 450 are configured as a hook structure. In this embodiment, the number of the hook-shaped electrical connecting terminals 452 is two, and the opening directions of the two electrical connecting terminals 452 are opposite, with the opening direction of one electrical connection terminal 452 being opposite to the direction of the position of the other electrical connection terminal 452 with respect to the said one electrical connection terminal 452. Each of the electrical connecting terminals 452 passes through a hole formed in the magnetic isolation sheet 440, the chassis 430 and the PCB 420 respectively, is hooked to a portion of the edge of the hole formed in the PCB 210, and is soldered to the PCB 210.

It should be understood that the electrical connecting terminals 252,

352, 452 of the coils 250, 350, 450 may also have other forms. Additionally, the contact portions 231, 232 of the chassis 230, 330, 430 may be located elsewhere or have other forms. Further, the chassis 230, 330, 430 may also be through-hole mounted to the grounded pad of the PCB 210, 310, 410 through the contact portions 231, 232, and may have other forms. The invention is not limited thereto. Additionally, a portion of the chassis 230, 330, 430 can also be adhered on the PCBs 210, 310, 410.

Figure 5 shows a perspective view of an inductive charging antenna construction 500 in accordance with another embodiment of the present invention. In the other embodiment of the inductive charging antenna construction explained with reference to Figure 5, for convenience of description, the description of the antenna construction of this embodiment which are identical to or which can be easily understood from the embodiment shown in FIGS. 2a to 2c will be omitted.

In this embodiment, the inductive charging antenna construction 500 comprises a PCB 510, electrical components 520, an antenna assembly, and a shielding layer (not shown in the Figures).

The shielding layer is a ground layer of the PCB 510 that covers substantially the entire surface of the PCB 510. The ground layer of the PCB 510 can be a flat copper layer plated or coated on the PCB 510. The ground layer is used to avoid interference between the PCBA and the antenna assembly which PCBA consisting of the PCB 510 and the electrical components 520. In this case, the chassis can be omitted. It should be understood that the shielding layer is a ground layer of the PCB 310 covering substantially the entire surface of the PCB 310, however, holes or notches are allowed to be present in the ground layer of the PCB 310 as long as its influence on the shielding effect of the ground layer satisfies the design requirements.

The antenna assembly comprises a magnetic isolation sheet 540 and a coil 550. The electrical connecting terminals 552 of the coil 550 are connected to the PCB 510 through a hole (or a notch) 541 formed in the magnetic isolation sheet 540 and a hole (or a notch) formed in the ground layer. In order to minimize the risk of impairing the shielding effect of the ground layer, the electrical connecting terminal 552 may be electrically connected to the electrical components 520 located on the first side of the PCB 510 through a buried via. Further, the antenna assembly may further comprise a temperature sensing element (not shown).

A method for manufacturing the inductive charging antenna construction according to the present invention will now be described, which is not limited by the orders described below.

Referring to Figures 2a-2c, Figures 3a-3d, and Figures 4a-4d, a method for manufacturing an inductive charging antenna construction 200, 300, 400 in accordance with an embodiment of the present invention may comprise: providing a PCB 210, 310, 410; mounting substantially all of the electrical components 220, 320, 420 on a first side of PCB 210, 310, 410; attaching a chassis 230, 330, 430 to a second side of PCB 210, 310, 410; attaching a magnetic isolation sheet 240, 340, 440 to the chassis 230, 330, 430; disposing the coil 250, 350, 450 on the magnetic isolation sheet 240, 340, 440, and electrically connecting the coils 250, 350, 450 directly to the PCB 210, 310, 410 by soldering.

In particular, the contact portions 231, 232 of the chassis 230, 430, 440 may be surface-mounted on the second side of the PCB 210, 310, 410 directly by a reflow process. The contact portions 231, 232 of the chassis 230, 430, 440 may also be through-hole mounted to or otherwise soldered to the second side of PCB 210, 310, 410 directly. Additionally, the magnetic isolation sheet 240, 340, 440 may be bonded to the chassis 230, 330, 430 using an adhesive. Furthermore, the coil 250, 350, 450 may be directly connected to the PCB 210, 310, 410 by directly soldering the electrical connecting terminals 252, 352, 452 thereof onto the PCB 210, 310, 410, for example by means of surface-mounting (for example, in the case of the inductive charging antenna construction 200 of Figures 2a-2c and Figures 4a-4d), by through-hole mounting (e.g., in the case of the inductive charging antenna constructions 300, 400 of Figures 3a-3d), by other means, or by a combination of surface-mounting, through-hole mounting and other means.

Moreover, the method for manufacturing the antenna construction 200 can also comprise assembling a temperature sensing element 270 onto the PCB 210, 310, 410.

In addition, in order to simplify the manufacturing process and improve production efficiency, referring to Figures. 2a-2c, 3a-3d, and 4a-4d, a method for manufacturing the inductive charging antenna construction 200, 300, 400 according to another embodiment of the present invention may comprise: providing a PCB 210, 310, 410; mounting substantially all of the electrical components 220, 320, 420 on a first side of PCB 210, 310, 410; manufacturing a preassembly; attaching preassembly to the second side of the PCB 210, 310, 410. The preassembly can be placed onto the PCB 210, 310, 410 using a pick and place machine.

The step of manufacturing the preassembly may comprise: providing a chassis 230, 330, 430; attaching a magnetic isolation sheet 240, 340, 440 onto the chassis 230, 330, 430; and disposing a coil 250, 350, 450 on the magnetic isolation sheet 240, 340, 440, and electrically connecting the coil 250, 350, 450 to the PCB 210, 310, 410 directly by soldering.

In particular, attaching the preassembly to the PCB 210, 310, 410 may comprise surface-mounting the contact portions 231, 232 of the chassis 230, 330, 430 onto a pad of the PCB 210, 310, 410 through a reflow process, or may comprise through-hole mounting or otherwise soldering the contact portions 231, 232 onto the pad of the PCB 210, 310, 410. Furthermore, the coil 250, 350, 450 can be directly electrically connected to the PCB 210, 310, 410 by directly soldering the electrical connecting terminals 252, 352, 452 thereof onto the PCB 210, 310, 410. .

Referring to FIG. 5, a method for manufacturing an inductive charging antenna construction 500 in accordance with another embodiment of the present invention may comprise: providing a PCB 510; disposing substantially all of the electrical components 520 for controlling the inductive charging antenna construction 500 on a first side of the PCB 510; plating a ground layer of the printed circuit board on substantially the entire surface on the second side of the PCB 510, as a shield layer; attaching a magnetic isolation sheet 540 to the ground layer; and disposing a coil 550 on the magnetic isolation sheet 540 and directly connecting the coil 550 to the printed circuit board by soldering.

The inductive charging antenna constructions 200, 300, 400, and 500 described above may be included in a wireless charging module for wireless charging.