BLEEDER CIRCUIT, BATTERY MANAGEMENT SYSTEM, BATTERY, PROTECTION METHOD, AND ELECTRONIC APPARATUS

Title:

BLEEDER CIRCUIT, BATTERY MANAGEMENT SYSTEM, BATTERY, PROTECTION METHOD, AND ELECTRONIC APPARATUS

Document Type and Number:

WIPO Patent Application WO/2023/071096

Kind Code:

A1

Abstract:

The present application discloses a bleeder circuit, a battery management system, a battery, a protection method, and an electronic apparatus. The bleeder circuit comprises: a first branch, which is connected to a protected unit, the first branch comprising a first overvoltage protection device, and the first overvoltage protection device being used for passively discharging a surge voltage; and a second branch, which comprises a second overvoltage protection device and a control switch in series connection, the second branch being in parallel connection with the first branch. The control switch is connected to a control unit and is disconnected or closed on the basis of a control signal of the control unit. The bleeder circuit, by means of the combination of passive discharge of the first branch and active discharge of the second branch, solves the problem of overvoltage in a protected unit caused by surge voltage, thereby solving the problem of damage to a battery management system caused by a high-voltage surge.

Inventors:

CHEN HUI (CN)
FU YANHUI (CN)
CHU LE (CN)
GUO MAOBO (CN)

Application Number:

PCT/CN2022/089068

Publication Date:

May 04, 2023

Filing Date:

April 25, 2022

Export Citation:

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Assignee:

CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)

International Classes:

H02H9/00; H02H9/04

Foreign References:

CN111327030A	2020-06-23
CN112838573A	2021-05-25
CN214380045U	2021-10-08
CN112383114A	2021-02-19
JPH10201292A	1998-07-31

Other References: