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Battery management system with fault battery isolation function and method

A battery management system and battery technology, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of negative reliability of battery pack efficiency, limited number of battery cells, poor system flexibility, etc., and achieve a balance Safety and efficiency, reducing chain reactions, and ensuring safety

Inactive Publication Date: 2012-08-01
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Although this method guarantees the safety of the battery system, it is too rough and will have a great negative effect on the reliability of the power consumption of the entire system and the efficiency of the battery pack itself.
Some new battery management systems use blocking diodes to isolate faulty batteries individually, which often results in poor system flexibility and severely limits the number of battery cells that can be isolated

Method used

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  • Battery management system with fault battery isolation function and method
  • Battery management system with fault battery isolation function and method
  • Battery management system with fault battery isolation function and method

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Embodiment Construction

[0017] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope and implementation of the present invention are not limited thereto.

[0018] see figure 1 , figure 1 An overall structural diagram of an example of the present invention is given, wherein the battery module is composed of C 1 、C 2 、C 3 ......, C n It is composed of n battery cells, n>1, that is, it is composed of at least two single cells connected in series. The voltage health diagnosis module is composed of a single battery state parameter collection part and a health state comprehensive evaluation part. The control module is mainly responsible for the coordination and communication among various modules, as well as external information display and alarm.

[0019] figure 2 It is a schematic structural diagram of an implementation of a faulty battery isolation module, and the entire battery pack module is com...

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Abstract

The invention relates to a battery management system with a fault battery isolation function and a method, which are characterized in that the management system comprises a health state diagnosis module, a fault battery isolation module and a control module respectively connected with the health state diagnosis module and the fault battery isolation module. By means of the independence characteristics of each battery monomer in a battery pack, and by opening and closing a network to isolate fault batteries, the safety and utilization efficiency of the battery pack are considered. The battery management system can be simultaneously applied to the following two conditions to effectively ensure the safety of the battery pack and fully utilize the capacity of the battery pack, 1 due to structural defects possibly happen to the battery monomer, for example, an open circuit appears inside the battery monomer, a battery must be isolated immediately and replaced at an appropriate time; 2 over-charge or over-discharge and the like possibly appear to part of the battery monomer, and at the moment, a user only needs to stop continuously charging or discharging the battery.

Description

technical field [0001] The present invention relates to a battery management system and method with the function of isolating a faulty battery, more precisely, the present invention relates to a method for real-time detection and isolation of a faulty battery. It belongs to the technical field of battery management. Background technique [0002] Batteries are an important technology for the development of new energy in the country and are widely used in various fields of the national economy. In the prior art, many devices such as automobiles, electric vehicles, ships, submarines, communication station standby DC power supplies, UPS power supplies, electric tools, audio-visual electronic products, etc. all need to use accumulators. With the development and commercialization of various battery-related new materials, the capacity of batteries is increasing day by day. Batteries can more than double their capacity. However, with the improvement of battery energy density and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 何亮明杜翀
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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