Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ANTI-REVERSE-CONNECTION CIRCUIT-BASED LOAD DUMP PROTECTION CIRCUIT FOR USE IN VEHICLE
Document Type and Number:
WIPO Patent Application WO/2019/144676
Kind Code:
A1
Abstract:
An anti-reverse-connection circuit-based load dump protection circuit for use in a vehicle, which circuit is used for protecting an electric appliance connected in series to a main line of a power-supplying power source. The protection circuit comprises a unidirectional TVS tube (TVS1), and a first anti-reverse connection switch (D1) and a second anti-reverse connection switch (Q1) which are switched on when the power-supplying power source is normally connected and are switched off when the power-supplying power source is connected in a reverse manner. Load dump protection requirements demand and power source anti-reverse-connection requirements can be simultaneously satisfied; and reverse power source connection can be suppressed by utilizing a second anti-reverse-connection switch added to a negative power source end of the power-supplying power source. Reverse power source connection upon starting of a jumper wire can be protected against by means of a first anti-reverse-connection switch added to a positive power source end of the power-supplying power source. Furthermore, since resisting power source reversing is realized, a unidirectional TVS tube in the form of a patch can be used for load dump protection, such that the occupied space of a PCB can be reduced, the layout wiring is more convenient, and the power density is improved. The material cost is reduced, and the production of patches dispenses with the process of insertion members, thereby reducing the production cost.

Inventors:
HUANG, Luocheng (No.52, Tianedang Road Yuexi Town, Wuzhong District, Jiangsu 0, 215000, CN)
Application Number:
CN2018/115037
Publication Date:
August 01, 2019
Filing Date:
November 12, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SUZHOU INOSA UNITED POWER SYSTEM CO., LTD (No.52, Tianedang Road Yuexi Town, Wuzhong Distric, Suzhou Jiangsu 0, 215000, CN)
International Classes:
H02H11/00
Foreign References:
CN207853467U2018-09-11
CN102043386A2011-05-04
CN103982306A2014-08-13
CN202363894U2012-08-01
JP2013090367A2013-05-13
Attorney, Agent or Firm:
SHENZHEN STANDARD PATENT & TRADEMARK AGENT LTD. (Room 810-815, Sunshine Golf Building No.7008 Shennan Boulevard, Futian Distric, Shenzhen Guangdong 0, 518040, CN)
Download PDF: