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Battery equalization circuit and battery equalization circuit detection method

A battery balancing and circuit technology, applied in charge balancing circuits, battery circuit devices, circuit devices, etc., can solve the problems of high cost, complicated detection methods of balancing circuits, and inability to meet mass market promotion and application.

Inactive Publication Date: 2018-06-01
BEIJING ZHIXING HONGYUAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The equalization circuit detection methods in the prior art are relatively complicated and costly, and cannot meet the needs of mass market promotion and application

Method used

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  • Battery equalization circuit and battery equalization circuit detection method
  • Battery equalization circuit and battery equalization circuit detection method

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Embodiment Construction

[0046] The embodiment of the invention discloses a battery balancing circuit detection method and the battery balancing circuit, which can detect the reliability of the battery balancing circuit and improve the battery life.

[0047] figure 1 Shown is a schematic structural diagram of a battery balancing circuit according to an embodiment of the present invention, as figure 1 As shown, the battery balancing circuit includes:

[0048] A plurality of balancing units 110, each of which is connected to a single battery 100 in the battery pack;

[0049] The control unit 120 is configured to control the working state of the equalization unit according to a preset policy.

[0050] Wherein, the balancing unit 110 includes a balancing load 111 and a switch 112 , wherein the balancing load 111 is connected in series with the switch 112 .

[0051] Such as figure 1 As shown, each circuit balancing unit 110 is connected to a single battery 100 in the battery pack, including:

[0052] ...

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Abstract

The embodiments of the invention disclose a battery equalization circuit and a battery equalization circuit detection method. The battery equalization circuit comprises a plurality of equalization units and a control unit; each equalization unit is connected with a single cell in a battery pack; the control unit is connected with the plurality of equalization units and is used for controlling theoperation states of the equalization units according to preset policies; each equalization unit includes an equalization load and a switch, wherein the equalization load is connected in series with the switch; and the control unit is also used for sending switching-on signals to the switches in the equalization units according to preset policies so as to make the switches in the plurality of equalization units switched on. The battery equalization circuit detection method of the present invention is applied to the above battery equalization circuit and includes the step that the control unit controls the switching-off or switching-on state of each battery equalization unit according to preset policies. With the battery equalization circuit detection method provided by the embodiments of the present invention adopted, the effectiveness of the battery equalization circuit can be automatically detected, and the service life of the battery pack can be prolonged, and the performance of thebattery pack can be improved.

Description

technical field [0001] The invention relates to the field of new energy technologies, in particular to a battery balancing circuit and a detection method for the battery balancing circuit. Background technique [0002] With the development of lithium battery technology and the popularization of the concept of energy saving and environmental protection, the application prospects of large capacity lithium ion batteries in high power occasions are becoming more and more broad, such as electric vehicles, electric bicycles, hybrid vehicles, solar power systems and other new energy sources and aerospace field. [0003] In order to adapt to high-power occasions, the usual method is to connect multiple lithium-ion battery packs in series to form a battery pack. However, when multiple lithium-ion battery packs are connected in series, due to the individual characteristics of each lithium-ion battery, it is easy to appear charging during use. Unbalanced capacity caused by uneven disc...

Claims

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Application Information

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IPC IPC(8): H02J7/00G01R31/36
CPCG01R31/3835G01R31/396H02J7/0019
Inventor 王华杰张君鸿陈浩王静亮
Owner BEIJING ZHIXING HONGYUAN AUTOMOBILE CO LTD
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