Electric automobile power battery management system and method

A technology for electric vehicles and power batteries, applied in the field of power battery management systems, can solve the problems of low voltage acquisition accuracy of single cells, transformer ripple interference, and bulky volume, etc., and achieves strong anti-electromagnetic interference ability, large charging current, Small size effect

Active Publication Date: 2012-09-05
BEIQI FOTON MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing electric vehicle battery management system uses multiple transformers to charge and discharge the power battery pack, which is bulky and expensive, and the accuracy of collecting the voltage of the single battery is not high, and the circuit has ripples generated by energy devices such as transformers Interference and other issues

Method used

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  • Electric automobile power battery management system and method
  • Electric automobile power battery management system and method
  • Electric automobile power battery management system and method

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described here are only used for illustration, and are not used to limit the present invention.

[0023] Please refer to figure 1 , Is a structural block diagram of an embodiment of the power battery management system of the present invention. The power battery management system 20 includes a battery information detection module 21 connected to each battery cell in the electric vehicle power battery pack 10, and the battery information detection module 21 The voltage of each battery cell can be detected; the central processing module 22 is connected to the battery information detection module 21, receives the voltage of each battery cell detected by the battery information detection module 21, and evaluates all voltages in the detection result For comparison, the average voltage value is calculated, and the battery cell whose voltage is lower than the av...

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Abstract

The invention relates to an electric automobile power battery management system and method. The electric automobile power battery management system comprises a battery information detection module, a central processing module, a logical switch array switching module and a power module, wherein the battery information detection module can be used for detecting the voltage of each battery monomer; the central processing module is used for receiving the voltage of each battery monomer detected by the battery information detection module, comparing all voltages in the detection result, calculating an average voltage value and finding out the battery monomer the voltage of which is lower than the average voltage value and is the lowest in a battery set; the battery monomer the voltage of which is lower than the average voltage value and is the lowest in the battery set is conducted with the logical switch array switching module by the central processing module; and the power module is used for supplying power for the central processing module and charging the battery monomer the voltage of which is lower than the average voltage value and is the lowest in the battery set. With adoption of the electric automobile power battery management system, the charging power of a battery can be accurately controlled, and the charging efficiency is high.

Description

Technical field [0001] The invention belongs to the technical field of automobile new energy, and specifically relates to a power battery management system and method of an electric automobile. Background technique [0002] With the development of society and the increasingly prominent issues of energy and environmental protection, pure electric vehicles have attracted more and more attention from countries around the world for their advantages of zero emission and low noise, and are called green vehicles. As one of the key technologies for the development of electric vehicles, the battery management system (BMS) is the key to the industrialization of electric vehicles. [0003] The existing electric vehicle battery management system uses a multi-channel transformer to charge and discharge the power battery pack, which is bulky and expensive, and the accuracy of the single battery voltage collection is not high, and the circuit has ripples generated by energy devices such as transf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02B60L11/18H01M10/42G01R31/36
CPCY02E60/10Y02T10/70
Inventor 于铭汉夏彩萍孙江元
Owner BEIQI FOTON MOTOR CO LTD
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