A battery pack with backup unit and its dynamic management method

A backup battery, dynamic management technology, applied in electric vehicles, battery circuit devices, safety/protection battery circuits, etc., can solve problems affecting the use efficiency of battery packs, and achieve the effect of improving use efficiency

Inactive Publication Date: 2017-05-10
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a battery pack with a backup unit and its dynamic management method to solve the problem that the single battery affects the efficiency of the battery pack due to the internal problems of the existing battery pack

Method used

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  • A battery pack with backup unit and its dynamic management method
  • A battery pack with backup unit and its dynamic management method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: A battery pack system with a backup unit includes: a main battery module, a multiplexer, a controller, and a backup battery module. The main battery module is connected to the multiplexer; the multiplexer is connected to the backup battery module. The controller is sequentially connected with the main battery module, the multiplexer and the backup battery module.

[0033] figure 1 It is a structural diagram of a battery pack system with a backup unit. In the main battery module, 9 single batteries are connected in series, and in the backup battery module, 2 backup battery branches are set to make it easier to understand the description, but the single battery, backup battery The number can be more.

[0034] The main battery module includes an acquisition circuit, a single battery and a multi-way switch. The acquisition circuit is connected in parallel with the single cells; the single cells 1-9 and the multi-way switches 1-10 are sequentially connected ...

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PUM

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Abstract

The invention provides a battery pack with a standby unit and a dynamic management method of the battery pack, and belongs to a battery pack and a dynamic management method thereof. The battery pack comprises a main battery module, a multichannel selector, a controller and a standby battery module, wherein the main battery module is connected with the multichannel selector; the multichannel selector is connected with the standby battery module; the controller is sequentially connected with the main battery module, the multichannel selector and the standby battery module; the controller controls the main battery module and estimates states of charge SOCi and capacity Qi of single batteries; when the ratio of the capacity Qi of a certain single battery to rated capacity Q is smaller than 80%, the failed battery is replaced by a standby single battery; when difference between the state of charge SOCi of a certain single battery and the average state of charge SOC of the other single batteries is smaller than 10%, counting is carried out, and if the frequency exceeds a certain number, the single battery is replaced; and if the frequency does not reach the certain number, the standby single battery charges the failed battery or the failed battery charges the single battery according to the voltage of the single battery.

Description

technical field [0001] The invention relates to a battery pack and its dynamic management method, in particular to a battery pack with a backup unit and its dynamic management method. Background technique [0002] Batteries (such as supercapacitors, lithium batteries, etc.) Similarly, the battery may be overcharged or overdischarged during use. When the battery pack is in such an inconsistent state, it will cause the capacity of some single cells to be lower than the average capacity of the battery pack, and during its discharge process, its power will be discharged first. Although other batteries still have a lot of power at this time, in order to protect the single battery, the discharge of the entire battery pack has to be terminated, so the energy in the battery pack has not been fully utilized. When it is more serious, there will be a situation where a certain single battery is completely scrapped and other batteries are intact, which will cause the entire battery pac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J9/06
CPCH02J7/0013H02J7/0026
Inventor 王后连周公博朱真才李洋李伟曹国华
Owner CHINA UNIV OF MINING & TECH
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