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Vehicle power battery state detection system

A battery status and detection system technology, applied in the field of detection systems, can solve the problems of high cost and limited service life in the power battery market, and achieve the effects of high communication rate, strong anti-interference and high transmission rate

Inactive Publication Date: 2017-06-30
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the electric vehicle industry is currently booming, the high market cost of power batteries and the later service life limit the further promotion of electric vehicles

Method used

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  • Vehicle power battery state detection system
  • Vehicle power battery state detection system
  • Vehicle power battery state detection system

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Embodiment Construction

[0048] The present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited.

[0049] The vehicle power battery state detection system provided by the present invention has a structure such as figure 1 As shown, it includes two parts: the battery control unit (BCU) and the battery detection unit (BMU). The battery detection unit is composed of an integrated chip LTC6804-2, which can detect and balance 12 series batteries. The chip has a built-in isoSPI interface , a single twisted pair can be used to connect to the ISOSPI isolated communication interface LTC6820 to form a multi-branch configuration of LTC6804-2, so that the battery control unit can realize isolated SPI data communication.

[0050] The battery control unit is the core unit of the vehicle power battery state detection hardware system, which controls the normal operation of the entire detection system. On the one hand, the...

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PUM

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Abstract

The invention relates to a vehicle power battery state detection system comprising a battery detection unit which is used for multiple series-connected batteries to perform total voltage and total current detection and balance management and a battery control unit which uses a distributed structure and is formed in a way of using STM32F103ZET6 as a master controller. The battery detection unit is composed of an integrated chip LTC6804-2, and the isoSPI interface is connected with an ISOSPI isolation type communication interface LTC6820 through a single twisted pair so as to form LTC6804-2 multi-branch configuration, the battery control unit is enabled to realize isolation type SPI data communication, and voltage and temperature detection of a single battery can be completed. Balance management of a battery pack can be performed so that the working temperature of the single battery and the ambient temperature can be guaranteed, charge and discharge of high current can be limited and the system has great anti-interference capability.

Description

technical field [0001] The invention relates to a detection system, in particular to a vehicle power battery state detection system. Background technique [0002] As the development direction of future automobiles, electric vehicles have been generally recognized and valued by the industry. Driven by this, the electric vehicle industry has developed rapidly and has a good momentum. However, compared with the current mainstream internal combustion engine vehicles, electric vehicle technology is still immature, and there are always a series of technical problems related to "electricity" that are difficult to overcome, and battery management of electric vehicles is one of them. [0003] With the continuous advancement of electric vehicle technology, the vehicle power battery status detection system, as a part of the battery energy storage system, has attracted more and more attention. In order to better detect the state of the power battery and ensure the safe and stable outpu...

Claims

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Application Information

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IPC IPC(8): G01R31/36
CPCG01R31/3842
Inventor 汪怡平陈光耀李淼邱双刘一平
Owner WUHAN UNIV OF TECH
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