A series battery equalization circuit

A technology of series battery packs and equalizing circuits, which is applied in battery circuit devices, circuit devices, collectors, etc., can solve the problems of high charger requirements and large heat generation, and achieve the effects of improving transfer efficiency, improving efficiency, and reducing costs

Inactive Publication Date: 2015-09-23
EDAN INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide a balance circuit for battery packs in series, which aims to solve the problems of large heat generation and high requirements for chargers in the battery balance circuit in the prior art

Method used

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  • A series battery equalization circuit
  • A series battery equalization circuit
  • A series battery equalization circuit

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] image 3 It is a structural schematic diagram of the series battery pack balancing circuit provided by the embodiment of the present invention in a specific application. see image 3 As shown, the balance circuit of series battery packs provided by the embodiment of the present invention includes a voltage sampling module 104, a controller 103, an isolation switch module 102, and an energy storage module 105; the voltage acquisition input terminal of the voltage sampling module 104 is connected to the series The battery pack 101, the voltage acquisition output terminal of the voltage sampl...

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Abstract

The invention provides a series battery equalization circuit belonging to the field of electric power and electronic techniques. The circuit comprises a voltage sampling module, a controller, a disconnecting switch module and an energy storage module. A voltage acquisition input terminal of the voltage sampling module is connected to a series battery. A voltage acquisition output terminal of the voltage sampling module is connected to a voltage input terminal of a controller. A control signal output terminal of the controller is connected to a control terminal of the disconnecting switch module. A voltage input terminal of the disconnecting switch module is connected to the series battery. A first voltage output terminal and a second voltage output terminal of the disconnecting switch module are respectively connected to the two terminals of the energy storage module. According to the invention, high-precision balancing between voltages of batteries in the series battery can be realized to enable normal fully-charging and fully-discharging of the whole series battery. Transferring efficiency and equalization efficiency of electric quantities between the batteries can be raised. In addition, equalization can be realized in charging, discharging and static states by the series battery equalization circuit of the invention. The equalization of the batteries can be realized just by a capacitor. The cost for the equalization circuit is reduced.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to an equalizing circuit of series battery packs. Background technique [0002] In the battery application system, in order to provide sufficient voltage for the device, the battery pack is usually composed of multiple cells in series, but if the capacity of the batteries does not match, it will affect the capacity of the entire battery pack. After working for a certain period of time, the battery packs formed in series will show great differences due to the inconsistency of the cells themselves, the inconsistency of the working temperature and other factors, which will seriously affect the life of the battery pack and the use of the system. , eventually affecting the normal use of electronic equipment. [0003] Overcharging and overdischarging the battery makes the battery vulnerable to damage, such as reduced battery capacity and reduced lifespan. Excessive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 王贤江胡振营
Owner EDAN INSTR
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