A method for online upgrading a bootloader of a vehicle control unit of an electric vehicle

Abstract

The invention discloses a method for online upgrading a bootloader of a vehicle control unit of an electric vehicle, which is characterized in that a set of application layer bootloader is designed, and the method mainly comprises the steps of updating of the application layer bootloader, updating of an original bootloader and updating of a formal application layer code; the storage area of the vehicle control unit where the application layer bootloader is located is an application layer code area, and the application layer bootloader is used for performing code data erasing, rewriting and verification on the original bootloader. The whole vehicle control unit does not need to be detached from the vehicle in the whole updating process, the whole updating work can be completed only by using an original updating tool, the after-sales cost of bootloader program updating and the vehicle maintenance cost are greatly reduced, and it is guaranteed that the situation that the whole vehicle control unit used by the vehicle consumes huge funds to be maintained and upgraded due to the bootloader version problem is avoided.

Description

technical field [0001] The design belongs to the field of vehicle controller design, and particularly relates to a method for flashing and updating the bootloader of the vehicle controller for electric vehicles. Background technique [0002] In recent years, electric vehicles have become more and more popular as a new means of transportation. The popularity of electric vehicles has continued to increase, and the technologies involved in the development and manufacture of electric vehicles have also continued to improve. Various automobile manufacturers at home and abroad have invested in the development of electric vehicles. Since electric vehicles do not have traditional equipment such as engines, the electronic equipment on the vehicle is much more than that of traditional fuel vehicles, and there are also more electronic equipment. Manufacturers need to do more controller development work. At the same time, there are more software upgrades for electronic controllers than ...

AI Technical Summary

Problems solved by technology

[0003] At present, auto parts suppliers must design a set of bootloader programs for flashing application layer software when designing a controller. In the face of so many controllers and rapid product updates, It is difficult to avoid that the design of each set of bootloader is stable, reliable and bug-free. After the bootloader program has problems, the common practice in the industry is to remove the controller and re-update the bootloader program firmware, and then return to the after-sales service outlet or OEM. , so that huge manpower and material resources are consumed, and suppliers and OEMs suffer huge losses

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