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Power battery pack balancing system and method

A power battery pack and equalization system technology, which is applied in the direction of charge equalization circuit, secondary battery, battery circuit device, etc., can solve the problem that the power battery with large capacity cannot be applied

Active Publication Date: 2015-04-22
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a power battery pack balancing system and balancing method, aiming to solve the problem that the battery balancing method in the prior art cannot be applied to large-capacity power batteries due to heat generation

Method used

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  • Power battery pack balancing system and method
  • Power battery pack balancing system and method

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Embodiment Construction

[0035] 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.

[0036]In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0037] An embodiment of the present invention provides a power battery pack balancing system, such as figure 1 As shown, the power battery balancing system includes a battery management system 101, a central controller 201, a balancing module 301, a plurality of first switches 601, 602 to 60N, a plurality of second switches 701, 702 to 70N, and a plurality of first balancing interfaces 501, 502 to 50N, multiple second balancing interfaces 801, 802 to 80N, at least one fi...

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Abstract

The invention relates to the technical field of battery balancing and provides a power battery pack balancing system and method. The power battery pack balancing system comprises a battery management system, a central controller, a balancing module, multiple first switches, multiple second switches, multiple first balancing interfaces, multiple second balancing interfaces, at least one first power battery pack and at least one second power battery pack; the central controller enables the first power battery pack with the maximum electrical charge state value to charge the second power battery pack with the minimum electrical charge state value through the balancing module, the first switches and the second switches are controlled to be simultaneously turned off until the electrical charge state values reach an electrical charge state mean value, the battery management system is driven to work until the electrical charge state values of all the first power battery packs and the second power battery packs reach the electrical charge state mean value, the service life of power batteries is prolonged, the balancing energy consumption is small, the balancing efficiency of the power batteries is improved remarkably, and the balancing time of the power batteries is shortened.

Description

technical field [0001] The invention relates to the technical field of battery equalization, in particular to a power battery pack equalization system and an equalization method. Background technique [0002] At present, the operating voltage of a single lithium-ion power battery is generally 3.7V, while that of an electric vehicle power battery is 12V or 24V or higher. Therefore, in order to meet the voltage requirements during the operation of electric vehicles, the lithium-ion power battery used in electric vehicles must be connected in series with multiple battery cells to increase the voltage. Under the existing process conditions, it is difficult to achieve the same characteristics of a single lithium-ion power battery. If effective balanced charge and discharge measures are not taken, it will be difficult for lithium-ion power batteries to achieve completely uniform charge and discharge. Therefore, a single battery in multiple battery packs in series will appear unba...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/441H01M10/443H02J7/0019H02J7/0021H02J7/0049H02J7/0091Y02E60/10
Inventor 徐国卿宋志斌石印洲林定方梁嘉宁常明刘芬芬
Owner SHENZHEN INST OF ADVANCED TECH
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