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Battery management system with low standby power consumption and battery management system awaking method

A battery management system and low power consumption technology, which is applied in secondary battery testing, secondary battery repair/maintenance, etc., can solve the problems of shortening battery standby time, high standby power consumption of the management system, etc., to reduce standby power consumption, Low cost and extended standby time

Active Publication Date: 2016-06-22
HUIZHOU BNET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the power isolation module, communication module, and communication isolation module need to be in the working state of power all the time, resulting in high standby power consumption of the management system and shortening the standby time of the battery

Method used

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  • Battery management system with low standby power consumption and battery management system awaking method
  • Battery management system with low standby power consumption and battery management system awaking method
  • Battery management system with low standby power consumption and battery management system awaking method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1 of the present invention provides a low power consumption standby battery management system. refer to figure 1 , the low-power standby battery management system includes: a power supply, an isolated power supply module, a communication module, a communication bus, a communication isolation module, a control center, a power switch module, and a communication bus level detection module. The output end of the power supply is connected to the input end of the power switch module, the output end of the power switch module is connected to the input end of the power isolation module, and the output end of the power isolation module is respectively connected to the power supply input end of the communication module and the communication isolation module. The power supply input terminal is connected, the communication module is respectively connected with the communication bus and the communication isolation module signal, the communication isolation module is conne...

Embodiment 2

[0036] Embodiment 2 of the present invention provides a low power consumption standby battery management system. refer to Figure 4 , the difference between the present embodiment and embodiment 1 is as follows:

[0037] The controllable switch device uses a PNP transistor Q2. The power switch module also includes a resistor R2 connected between the base and the emitter of the PNP transistor, the base of the PNP transistor Q2 is connected to the output end of the power supply as the input of the power switch module, and the emitter of the PNP transistor Q2 The pole serves as the input control terminal of the power switch module and is connected to the output control terminal of the control center, and the collector of the PNP transistor Q2 is connected to the input terminal of the power isolation module as the output terminal of the power switch module.

Embodiment 3

[0039] Embodiment 3 of the present invention provides a battery management system wake-up method based on the low-power standby battery management system described in Embodiment 1. refer to Figure 5 and combine figure 1 , figure 2 , image 3 , the wake-up method of the battery management system includes the following steps:

[0040] (1) When the battery management system is in standby, the control center disconnects the power switch module. Specifically: when the battery management system is in standby, the control center outputs a high-level control signal to the gate of the P-type MOS transistor Q1 through the output control terminal, the P-type MOS transistor Q1 is cut off, and the power switch module has no power output, so the Power off the isolated power supply module, communication module, and communication isolation module.

[0041] (2) The communication bus level detection module detects the level signal of the communication bus.

[0042] (3) If it is detected...

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Abstract

The invention discloses a battery management system with low standby power consumption and a battery management system awaking method. The battery management system comprises a power supply, an isolation power supply module, a communication module, a communication bus, a communication isolation module, a control center, a power supply switch module and a communication bus level detection module, wherein the battery management system is in standby, the power supply switch module is disconnected by the control center; the communication bus level detection module detects the level signal of the communication bus; if level signal change of the communication bus is detected, an awakening signal is output to the control center; and the control center receives the awakening signal, awakens the battery management system and switches on the power supply switch module. The power supply switch module is disconnected when the battery management system is in standby, so that the power supply isolation module, the communication module and the communication isolation module are power off in a resting mode when the battery management system is in standby; and therefore, the standby power consumption of the battery management system is lowered and the standby time of the battery is prolonged.

Description

technical field [0001] The present invention relates to the technical field of battery management systems, and more specifically, relates to a low-power standby battery management system and a method for waking up the battery management system. Background technique [0002] The battery management system (BATTERYMANAGEMENTSYSTEM, BMS) needs to send data externally, so it will have communication modules such as CAN and RS485. The power supply circuit of the communication module is generally isolated from other circuit modules in the battery management system. At the same time, there is also a power module that needs to be isolated. In order to ensure the normal communication of the battery management system, the communication module cannot be powered off even when the battery management system is powered off and sleeps. Therefore, the power isolation module, the communication module, and the communication isolation module need to be in the power-on working state all the time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42
CPCH01M10/42H01M10/4285Y02E60/10
Inventor 徐文赋任素云杨宇帮
Owner HUIZHOU BNET TECH CO LTD
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