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System for measuring charge state of vehicle power battery

A technology for automotive power batteries and state of charge, applied in the field of measurement systems, can solve the problems of inaccurate measurement, difficulty in test modeling, difficulty in obtaining battery parameters, etc., and achieve the effect of simple modeling, fast calculation speed, and small error

Inactive Publication Date: 2008-09-03
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to overcome the problems of difficulty in obtaining internal parameters of the battery, difficulty in testing and modeling, and inaccurate measurement, and provide a measurement system for the state of charge of an automobile power battery

Method used

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  • System for measuring charge state of vehicle power battery
  • System for measuring charge state of vehicle power battery
  • System for measuring charge state of vehicle power battery

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Experimental program
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Embodiment Construction

[0033] The present invention is described in detail below in conjunction with accompanying drawing:

[0034] The measurement system of the state of charge (SOC) of the vehicle power battery is mainly used in the power management of electric vehicles and hybrid vehicles to detect the remaining power of the battery and transmit this situation to the electronic control unit ( ECU) or host computer. For example, the electronic control unit of a hybrid vehicle determines the control commands for the engine, clutch, motor and battery according to the accelerator pedal signal, the speed signal and the state of charge value of the battery. Effectively distribute power between the motor and the engine, and timely charge and discharge the battery to improve vehicle performance.

[0035] refer to figure 1 , the measurement system of the state of charge of the vehicle power battery, which is composed of a data acquisition part and a data central processing and transmission part.

[003...

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Abstract

The invention discloses a measuring system of state of charge of motor dynamic cell, in order to conquer the problem that it is difficult to obtain internal parameter of cell, and it is difficult to test and mould, and the measurement can not be accurately performed. The measuring system comprises a data collecting part and data central processing and conveying part. The data collecting part comprises voltage sensor, current sensor and temperature sensor. The data central processing and conveying part is composed of data processing unit and CAN conveying unit. The data processing unit uses digital signal processor with blur prediction algorithm, wherein the CAN conveying unit comprises CAN bus transceiver and CAN bus. One end of the CAN bus transceiver is electrically connected with the CAN controller of digital signal processor and the other end of the CAN bus transceiver is electrically connected with the CAN bus and the CAN bus is electrically connected with the electric control unit of motor or main control computer. The invention can be applied for cell testing and administering field of electric automobile, hybrid dynamic motor and other products.

Description

technical field [0001] The invention relates to a measurement system applied to the field of battery testing and management of electric vehicles and hybrid vehicles, more specifically, it relates to a measurement system for the state of charge of a vehicle power battery. Background technique [0002] As a common air pollutant, the exhaust gas emitted by fuel vehicles has gradually attracted people's attention. In order to alleviate the pressure caused by vehicle exhaust to air pollution, power batteries, as an important component, have begun to become a main source of vehicle power. For electric vehicles and hybrid vehicles, the judgment of the condition of the battery is critical to the operation of the whole vehicle. [0003] In order to prolong the service life of the battery, avoid irreparable damage caused by excessive discharge of the battery, and achieve the purpose of enabling the vehicle to drive safely and stably, we need to know the state of charge (SOC) of the ba...

Claims

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Application Information

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IPC IPC(8): G01R31/36H01M10/48H04L12/28
CPCY02E60/12Y02T90/168Y04S30/12Y02T90/167Y02E60/10
Inventor 陈万忠刘富韩双双冀群心李娟吴微康文炜孟琳陈建程禹
Owner JILIN UNIV
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