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Box-level battery management system

A battery management system and box-level technology, applied in battery circuit devices, secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problems of rapid service life decay and performance differences of battery packs, and achieve extended The effect of service life and reduction of performance differences

Active Publication Date: 2015-03-18
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of this application is to provide a box-level battery management system to solve the problems of performance differences between individual cells in the existing battery pack and the rapid decay of the service life of the battery pack

Method used

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  • Box-level battery management system
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Embodiment Construction

[0054] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0055]The present application provides a box-level battery management system to solve the problems that there are performance differences between individual cells in the existing battery pack and the service life of the battery pack decays too quickly.

[0056] The box-level battery management system provided in the embodiment of the present application is applied ...

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Abstract

The embodiments of the invention disclose a box-level battery management system. The box-level battery management system comprises multiple equalization control chips and a box-level controller. The equalization control chips are employed to conduct equalization control on any two adjacent monomer batteries. At the same time, the box-level controller is employed to monitor the work state of each equalization control chip. Therefore, electric quantity equalization between the any two adjacent monomer batteries is realized, and the performance difference between the any two adjacent monomer batteries is reduced; and moreover, the charge and discharge processes of all the monomer batteries in a whole battery pack can be consistent, so that the service life of the battery pack is prolonged, and accordingly, the problems in the prior art are solved.

Description

technical field [0001] The present application relates to the technical field of electric vehicles, in particular to a box-level battery management system. Background technique [0002] As resource and environmental problems become increasingly prominent, electric vehicles powered by vehicle-mounted power supplies are being used more and more widely. Lithium batteries have the advantages of high energy density and volume density, high working voltage, no memory effect, low self-discharge and no environmental pollution problems, and are ideal power sources for electric vehicles. However, the voltage of a single lithium battery is too low. In order to obtain a higher working voltage, it is generally necessary to connect lithium batteries in series to form a battery pack. [0003] During the manufacturing process of the single battery, the performance of the single battery is dispersed, and the internal environment of the battery pack is also non-uniform during the use process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02H7/18H01M10/44
CPCY02E60/10
Inventor 张帆严性平郑正仙林晓斌苏芳
Owner STATE GRID CORP OF CHINA
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