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Wake-up circuit and battery management system

A technology for waking up circuits and batteries, which is used in the automotive industry and can solve problems such as spontaneous combustion

Inactive Publication Date: 2018-04-27
CH AUTO TECH CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a wake-up circuit and battery management system. The technical problem to be solved is to effectively monitor the temperature of the battery when the electric vehicle key is powered off, so as to avoid spontaneous combustion caused by excessive battery temperature. accident happened

Method used

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  • Wake-up circuit and battery management system

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Embodiment 1

[0040] Embodiment 1 of the present invention proposes a wake-up circuit, which includes a thermistor and a first fixed-value resistor connected in series between the power supply and the ground terminal, and a first output is provided between the thermistor and the first fixed-value resistor terminal, the thermistor is used to detect the temperature of the battery, the first output terminal is used to connect with the management module of the battery management system, and transmit a voltage signal to the management module; wherein, when the thermistor detects that the temperature of the battery is higher than the predetermined value, the wake-up circuit outputs a voltage signal of a predetermined magnitude to the management module through the first output terminal as a wake-up signal.

[0041] Specifically, the thermistor in the wake-up circuit needs to be set on the battery, preferably at the position where the battery is most likely to generate heat, and then connected to th...

Embodiment 2

[0057] Embodiment 2 of the present invention proposes a battery management system, which includes: a management module and a wake-up circuit; the management module is used to connect with the battery; the wake-up circuit includes: a thermistor connected in series between the power supply and the ground terminal and a first A fixed-value resistor, a first output terminal is provided between the thermistor and the first fixed-value resistor, the thermistor is used to detect the temperature of the battery, the first output terminal is used to connect with the management module of the battery management system, and the management module A voltage signal is transmitted; wherein, when the thermistor detects that the temperature of the battery is higher than a predetermined value, the wake-up circuit outputs a voltage signal of a predetermined size to the management module through the first output terminal as a wake-up signal; the first output terminal of the wake-up circuit It is con...

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Abstract

The invention relates to a wake-up circuit and a battery management system and relates to the technical field of automobile industry. According to the mainly adopted technical scheme, the wake-up circuit comprises a thermistor and a first fixed resistor, wherein the thermistor is connected between a power supply and a grounding terminal in series; a first output end is arranged between the thermistor and the first fixed resistor; the thermistor is used for detecting the temperature of a battery; the first output end is used for being connected with a management module of the battery managementsystem and transmitting a voltage signal to the management module; and when the thermistor detects that the temperature of the battery is higher than a preset value, the wake-up circuit outputs the voltage signal of predetermined size to the management module as a wake-up signal through the first output end. The wake-up circuit is capable of monitoring the temperature of the battery under the condition that a key of an electric automobile is powered down, so that the condition of spontaneous combustion of the electric automobile caused by battery overheating is avoided.

Description

technical field [0001] The invention relates to the technical field of the automobile industry, in particular to a wake-up circuit and a battery management system. Background technique [0002] At present, in order to protect the living environment of human beings and reduce the emission of automobile exhaust, more and more clean energy sources are applied to automobiles, among which electric vehicles that use electric energy have the best development prospects. [0003] Since the driving energy of electric vehicles all comes from batteries, the safe use of batteries is an important factor affecting the safety of electric vehicles, and the temperature of batteries in electric vehicles is a key factor affecting the safety of batteries, because the battery temperature continues to exceed High indicates that the battery is about to fail, potentially posing a fire risk. Therefore, the electric vehicle uses the battery management system (BMS) to detect the battery temperature in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/48B60L11/18
CPCH01M10/425H01M10/486B60L58/10H01M2010/4271H01M2220/20Y02T10/70Y02E60/10
Inventor 陆群刘文秀
Owner CH AUTO TECH CORP CO LTD
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