BMS demarcating module based on CCP protocol

A protocol, CAN bus technology, applied in the field of calibration module design, can solve the problems of slow communication speed, unsatisfactory effect, low real-time performance, etc., to improve performance, improve portability and versatility, and shorten development cycle Effect

Inactive Publication Date: 2010-06-23
CHONGQING CHANGAN AUTOMOBILE CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the realization of BMS calibration function is based on the traditional RS-232 serial port communication, the communication speed is slow, the transmission distance is short, the parameters that can be calibrated are few, and the real-time performance is not high. satisfy

Method used

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  • BMS demarcating module based on CCP protocol
  • BMS demarcating module based on CCP protocol
  • BMS demarcating module based on CCP protocol

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Embodiment Construction

[0010] Such as figure 1 Shown is a schematic block diagram of the BMS calibration module of the present invention, and the BMS calibration module belongs to the lower computer, that is, the BMS side. The core controller of the calibration module, the digital signal processor DSP, is used as the upper controller. After the address / data bus is buffered by the buffer through the input / output I / O interface, it writes the control command and the status of the independent CAN bus controller. Data reading, at the same time, DSP controls the complex logic control device CPLD through the I / O interface output control word, so that it outputs chip selection and read and write control signals to the independent CAN bus controller, and the DSP controls the independent CAN bus controller to send and Receive the calibration information, and realize the calibration of the BMS through the CAN communication circuit. The CAN communication circuit can use a combination of an optocoupler isolation...

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Abstract

The invention discloses a demarcating module for protecting a battery management system (BMS) of an electric vehicle, and relates to automobile electronic technical field. A digital signal processor of the demarcating module exchanges data with a CAN bus controller through a bus buffer and operates the CAN bus controller through a complex logic control device so that the digital signal processor is ensured to acquire the CAN communication information in real-time. The transceiver end of the CAN bus controller is connected with a high speed optocoupler, is connected with a CAN communication conversion circuit and is subsequently connected with a CAN demarcating bus through an anti-jamming device. The invention realizes the online modification of the BMS parameters, realizes the real-time monitoring of the battery set operation parameters, optimizes the control performance of the management system, improves the transportability and generality of the BMS and shortens the system development cycle.

Description

technical field [0001] The invention relates to the application technology of automotive electronics, in particular to the design of a calibration module of a battery management system in a hybrid electric vehicle (HEV). Background technique [0002] The battery management system (BMS) is a key control component in electric vehicles. It is responsible for real-time monitoring of the working parameters of the battery pack, such as voltage, current and temperature, and real-time estimation of the state of charge (SOC) of the battery pack. The obtained state information is used for relevant fault diagnosis to ensure the safe use of the battery pack. The management performance of the battery pack by BMS is one of the key technologies for HEV application and development. The software design of the traditional battery management system is usually implemented in a fixed mode, and the battery-related control parameters participate in the operation of the system as definite values. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42B60R16/033G01R31/36
CPCY02E60/12Y02E60/10
Inventor 齐铂金周安健苏岭杜晓伟郑敏信杨辉前朴昌浩
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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