Vehicle control unit for pure electric automobile and system booting method

A vehicle controller, pure electric vehicle technology, applied in the direction of electrical program control, comprehensive factory control, comprehensive factory control, etc., can solve the problems of difficulty in dismantling the vehicle controller, low efficiency, time-consuming and laborious, etc.

Active Publication Date: 2012-10-17
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the boot update of the boot system of the installed vehicle controller fails, it will be more difficult to disassemble the vehicle controller, which is time-consuming, lab

Method used

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  • Vehicle control unit for pure electric automobile and system booting method
  • Vehicle control unit for pure electric automobile and system booting method
  • Vehicle control unit for pure electric automobile and system booting method

Examples

Experimental program
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Embodiment 1

[0028] Embodiment 1: This embodiment optimizes the refreshing of the vehicle controller of the pure electric vehicle, and adopts a dual-guidance system architecture, one for the backup guidance system and one for the main guidance system. The pure electric vehicle controller involved in this embodiment uses a Fressscale 32-bit chip (such as Mpc5607b) as the main control chip. Place the main boot system, backup boot system and applications into different Flash areas, such as figure 1 shown. The backup Boot is placed from address 0x000000 to address A, the main Boot is placed from address A to address B, and the App is placed from address B to C. The space after C is temporarily unused. After the controller is powered on, the program automatically runs to the backup boot, and the backup boot checks whether the main boot is complete. If the main boot is complete, it will jump to the main boot for execution. If the main boot is not complete, it will still run in the backup boot a...

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PUM

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Abstract

The invention discloses a vehicle control unit for a pure electric automobile, which comprises a main booting system, a set of application programs and a backup booting system, wherein the main booting system is used for booting the application programs; and the backup booting system, the main booting system and all the application programs are sequentially stored in the Flash. The invention adopts the double-booting architecture, and both of the two booting systems have the software refreshing function, thereby overcoming the trouble of demounting the control unit after the refreshing failure of the main booting system; and since the backup booting system can only be refreshed through BDM, even if the refreshing of the main booting system and the application programs fail, codes of the backup booting system can not be destroyed, and the normal communication with the upper computer can still be established. If the refreshing process fails, the refreshing can succeed by only performing the refreshing step again instead of demounting the control unit, and thus, the invention is convenient and quick and does not damage the control unit.

Description

technical field [0001] The invention relates to a vehicle controller of a pure electric vehicle, in particular to a guidance system, an application program and a system guidance method of the vehicle controller. Background technique [0002] The vehicle controller of a pure electric vehicle is equivalent to the brain of the vehicle. During the software development process of the vehicle controller of a pure electric vehicle, it is often necessary to modify the software code and update the control model. Brush to write. [0003] The current vehicle controller software is composed of a boot system (Boot) and some application program (App) codes. The boot system Boot has the functions of guiding the application program App and software refresh, and can communicate with the host computer to update the App or guide the system's own software. The commonly used refresh method is to refresh the new boot system program through the BDM (Background Debugging Mode) interface, and then...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 李军华
Owner 奇瑞新能源汽车股份有限公司
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