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Battery apparatus and battery balance method therefor

A battery device and battery balancing technology, which is applied to battery circuit devices, circuit devices, charging/discharging of secondary batteries, etc., can solve the problems of incomplete discharge, inability to discharge batteries, and inability of batteries to be effectively charged, and achieve a simple structure. , Balance the effect of high efficiency

Inactive Publication Date: 2017-12-05
SHENZHEN JINGQUANHUA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Battery equalization mainly solves the problem of "undercharging and discharging". The so-called "undercharging" means that the battery with large individual differences first reaches the charging limit voltage, and the charging stops, causing other batteries to be unable to charge, and the battery cannot be effectively used. Charging; the so-called "can't discharge" means that the battery with large individual differences first reaches the discharge cut-off voltage, causing other batteries to be unable to discharge, and the energy cannot be fully released

Method used

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  • Battery apparatus and battery balance method therefor
  • Battery apparatus and battery balance method therefor

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Embodiment Construction

[0029] 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. It can be understood that the drawings are provided for reference and illustration only, and are not intended to limit the present invention. The dimensions shown in the drawings are only for the convenience of clear description, and do not limit the proportional relationship.

[0030] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be an intervening c...

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Abstract

The invention provides a battery apparatus. The battery apparatus comprises at least two batteries connected in series, balance circuits connected with the two ends of each battery in parallel, and a control unit; when the balance circuits are switched on, the batteries are discharged; the control unit is electrically connected with each battery to collect the voltage of each battery; when the batteries are charged, the control unit collects the voltage of each battery to find the battery with the lowest voltage and controls the balance circuits at the two ends of the batteries, the voltages of which are greater than the lowest voltage, to be switched on until the voltages of all the batteries are less than or equal to the lowest voltage; and the control unit controls all the balance circuits to be cut off. The battery apparatus is simple in structure and high in balance efficiency. The invention also provides a battery balance method.

Description

technical field [0001] The invention relates to the field of new energy batteries, in particular to a battery device used for electric vehicles and other electrical equipment. Background technique [0002] A battery device usually includes a plurality of batteries connected in series to supply power to loads of electric vehicles or other electrical equipment. Cell balancing refers to the application of differential current to different cells (or battery packs) in a series battery. The current of each cell in a series battery is usually the same, so additional components and circuitry must be added to the cells to achieve cell balancing. During the use of the battery, the battery terminal voltage is unbalanced due to individual differences in the battery, temperature differences and other reasons. In order to avoid the deterioration of this unbalanced trend, it is necessary to balance the characteristics of each battery in the series battery pack to prolong the service life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/441H02J7/0016Y02E60/10
Inventor 谢春华
Owner SHENZHEN JINGQUANHUA ELECTRONICS
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