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Battery pack active equalization charging system and control method thereof

A control method and active equalization technology, which is applied in the direction of charge equalization circuit, battery circuit device, battery over-discharge protection, etc., can solve the problems of equalizing large loss of batteries, affecting the capacity of battery packs, and reducing service life, so as to avoid excessive loss , to avoid the effect of capacity and service life decline

Active Publication Date: 2021-02-05
深圳源码智能照明有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an active equalization control method for battery charging in view of the above-mentioned defects of the prior art, which overcomes the excessive equalization loss in the existing battery equalization control method and the fact that it is easy to cause the battery to be over-discharged and affect Defects of reduced capacity and service life of battery packs

Method used

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  • Battery pack active equalization charging system and control method thereof
  • Battery pack active equalization charging system and control method thereof
  • Battery pack active equalization charging system and control method thereof

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Embodiment Construction

[0020]The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021]The embodiment of the present invention provides a control method of the battery pack active equalization charging system 1, such asfigure 1 with2As shown, the battery pack active equalization charging system 1 includes: a battery pack 50, a switch module 20, and a charging protection module 30. The battery pack 50 includes multiple strings of batteries connected in series. The charging protection module 30 is connected to the battery pack. The batteries in 50 are connected in series, the switch module 20 is connected in parallel to the charging protection module 30 and the batteries, and each string of the batteries in the battery pack 50 is configured with the corresponding charging protection module 30 and the The switch module 20, the control method includes: judging whether the battery meets a preset equalization condition; if the battery me...

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Abstract

The invention relates to the technical field of batteries, in particular to a battery pack active equalization charging system and a control method thereof. The battery pack active equalization charging system comprises a battery pack, a charging protection module and a switch module. The control method comprises the following steps: judging whether the battery meets a preset equalization condition or not; and if the battery meets the preset equalization condition, controlling the charging protection module to be switched off and controlling the switch module to be switched on; when the battery meets the equalization condition, disconnecting the battery to be equalized from the charging circuit through the charging protection module and the switch module without influencing the charging ofother batteries. Thus, since the equalizing battery does not need to be discharged in the equalizing process, the problem of excessive loss in the equalizing process can be avoided, and the problem that the capacity and the service life of the battery pack are reduced due to over-discharge of the battery can also be avoided.

Description

Technical field[0001]The invention relates to the technical field of batteries, in particular to a battery pack active equalization charging system and a control method thereof.Background technique[0002]Generally, multiple battery strings are connected in series to form a power battery pack. Even if the inconsistency between the battery cells caused by manufacturing is ignored, the inconsistency will be affected by temperature, internal resistance and aging during the working process. It becomes more and more serious, causing the voltage imbalance of the battery pack. As a result, overcharge and overdischarge will occur during the charging and discharging process, which will eventually affect the cycle life of the battery pack and cause the battery pack to fail prematurely. In order to extend the cycle life of the power battery pack, an effective measure is to control the balance of the battery pack.[0003]The existing equalization control of the battery pack is to collect the actual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0016H02J7/00306H02J7/00714H02J7/007194H02J7/007186
Inventor 尹振坤熊杰彭磊白小强易超
Owner 深圳源码智能照明有限公司
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