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Battery management system and current sharing circuit board thereof

A technology of battery management system and battery management unit, which is applied in the direction of charge equalization circuit, battery circuit device, circuit device, etc., which can solve the problems of burning batteries, accelerating the aging of battery packs, and heating, and achieve the effect of avoiding aging acceleration and heating

Inactive Publication Date: 2017-07-25
SHENZHEN ANDING NEW ENERGY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase of charging current and discharging current not only accelerates the aging of the battery pack, but also causes heating problems. When the temperature is too high, it will even burn the internal materials of the battery and cause the battery pack to explode.

Method used

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  • Battery management system and current sharing circuit board thereof
  • Battery management system and current sharing circuit board thereof

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specif...

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Abstract

A current equalizing circuit board includes a control chip and a plurality of current equalizing units. The control chip is connected with the battery management unit and each current sharing unit. Each current sharing unit includes an electronic switch and an energy storage element. The first end of each electronic switch is connected with the control chip, the second end of each electronic switch is connected with the corresponding electric core, and the third end of each electronic switch is connected with the corresponding energy storage element. The control chip controls the turn-on and cut-off frequencies of each electronic switch according to the instructions sent by the battery management unit, so that the charging current and the discharging current of each battery cell are consistent. The above-mentioned current equalizing circuit board can make the charging current and discharging current of each cell in the battery pack consistent. The present invention also provides a battery management system using the above-mentioned current equalizing circuit board.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of batteries, in particular to a battery management system and a current equalizing circuit board thereof. [0003] 【Background technique】 [0004] During the production process of the battery, due to the difference in raw materials and production processes, there will be certain differences in its capacity, internal resistance, voltage and self-discharge rate. At the same time, with the increase in the number of charge and discharge cycles and the influence of factors such as storage time and temperature during use, the degree of wear and tear of each battery will be different, and the charging current and discharging current of each battery will also be different. When a battery in the battery pack is severely depleted, its charging current and discharging current will increase rapidly. However, the increase of charging current and discharging current not only accelerates the aging of the battery ...

Claims

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Application Information

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IPC IPC(8): H02J7/00
CPCH02J7/0018
Inventor 龚建奎陈贵华饶睦敏李瑶
Owner SHENZHEN ANDING NEW ENERGY TECH DEV CO LTD
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