Equalization circuit of battery pack and equalization method

A technology for balancing circuits and battery packs, applied in battery circuit devices, circuit devices, current collectors, etc., can solve the problems of large loss, low balancing efficiency, and complex heat management, and achieve high balancing efficiency, capacity balance, and simple implementation. Effect

Inactive Publication Date: 2013-09-25
珠海市安吉名能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, this method to achieve equalization results in low overall equalization efficiency, and the heat management generated by the bidirectional DC / DC module is more complicated and the loss is large

Method used

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  • Equalization circuit of battery pack and equalization method
  • Equalization circuit of battery pack and equalization method
  • Equalization circuit of battery pack and equalization method

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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] The principle block diagram of the present invention is as figure 1 As shown, the balancing circuit of the battery pack includes: a battery pack 1, a battery management unit 2, a controllable bidirectional switch array module 3, and an energy transfer module 4; the energy transfer module 4 includes a charging unit 41, a discharging unit 42, and a supercapacitor module 43 , the charging unit 41 is connected with the supercapacitor module 43 to form the charging circuit of the supercapacitor module 43, and the discharge unit 42 is connected with the supercapacitor module 43 to form the dischar...

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Abstract

The invention provides an equalization circuit of a battery pack and an equalization method. The equalization circuit comprises the battery pack, a battery management unit, a controllable bidirectional switch array module and an energy transfer module, the energy transfer module comprises a charging unit, a discharging unit and a super capacitor module; the controllable bidirectional switch array module is used for switching on or switching off the electric connection between battery cells and the super capacitor module according to an equalization control command of the battery management unit; the super capacitor module is used for charging and discharging the battery cells which meet equalization conditions; the battery management unit is used for controlling the voltage of the super capacitor module, making the voltage of the super capacitor module to be equal to the average voltage of the battery pack and sending the equalization control command to the controllable bidirectional switch array module to charge and discharge the battery cells which meet the equalization conditions. By means of the equalization circuit of the battery pack, the battery cells in the battery pack are equalized, and the equalization circuit of the battery pack has the advantages of being efficient, low in heat, long in service life and the like.

Description

technical field [0001] The invention relates to the technical field of power management, in particular to a battery pack equalization circuit and method. Background technique [0002] Today, power batteries are the core components of electric vehicles, and now there has been a boom in the development of power lithium-ion batteries and their special materials. As a new type of power technology, lithium batteries must be connected in series to meet the needs of the use voltage. The uneven performance of single batteries is not all due to the technical problems of battery production. Multiple processes, even if each process has undergone strict testing procedures, so that the voltage, internal resistance, and capacity of each battery are consistent, after a period of use, the voltage, internal resistance, and capacity of each battery will vary from various Factors (such as the production process of the battery, the material of the battery itself, and the environment in which t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 谢世荣
Owner 珠海市安吉名能源科技有限公司
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