A method for intelligently downloading ecu programs
A program and intelligent technology, applied in the field of ECU program intelligent download, can solve the problems of download failure and can no longer be downloaded, and achieve the effect of preventing abnormal download, ensuring the success of the update, and improving the convenience.
Active Publication Date: 2016-08-24
HUIZHOU EPOWER ELECTRONICS
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Problems solved by technology
The program download method on the traditional car mainly upgrades a single ECU, but for the BMS, it needs to upgrade multiple similar ECUs contained in it. The communication methods of each control unit are generally designed in the same way, and the traditional download method cannot Guaranteed program download for these similar units, so design methods are required to differentiate between multiple similar units
[0005] At present, the ECU program download needs to maintain the reliability of the ECU's power supply. If there is a power failure, the download will fail, and it is more likely that the download will not be able to be downloaded after the download fails. At this time, only open the corresponding ECU box cover or return to the original factory. carry out the upgrade procedure
Method used
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Experimental program
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Embodiment Construction
[0016] In order to allow those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below.
[0017] The invention discloses an intelligent download method similar to an ECU program. The implementation process is as follows: first, the PC is directly connected to the internal CAN network of the battery management system BMS through a USB-CAN conversion unit (usually using a USB-CAN conversion card); The multiple similar ECUs contained in the management system BMS are equipped with a boot unit and can provide a random identification code for the PC to identify each similar ECU; then the PC selects an ECU to be upgraded through a random address selection algorithm, namely: PC The computer sorts the random identification codes generated by the boot units of each ECU, and sends the information containing the random identification codes to each ECU according to the sorting order. After receiving this...
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The invention discloses a method for intelligently downloading ECU (electronic control unit) programs. The method includes steps that a PC (personal computer) is connected with an internal CAN (controller area network) of a battery management system BMS (comprising a plurality of similar ECUs); the various ECUs are provided with guiding units, the guiding units of the ECUs generate random identification codes when the PC requests for downloading the programs, and the PC selectively upgrades a certain corresponding ECU according to magnitudes of the identification codes while the other ECUs are in waiting states; and the PC transmits an updating program to the ECU with a program to be updated according to a request. The method has the advantages that the convenience in upgrading the programs of the battery management system BMS is improved; the programs can be upgraded one by one when the battery management system BMS comprises a plurality of similar ECU nodes; and the effectiveness of the programs can be verified, abnormal downloading is prevented, and the programs of the battery management system BMS can be repeatedly downloaded, so that downloading success is guaranteed.
Description
technical field [0001] The invention relates to an intelligent downloading method of an ECU program. Background technique [0002] With the continuous development of electric vehicles, BMS (battery management system), one of the core components of electric vehicles, has also been greatly developed, and the number of its actual applications has increased sharply, which has also led to an increase in the upgrade and maintenance of BMS. With mobility and a large number of electric vehicles, it will be very difficult to upgrade the overall program of the BMS, which limits the mass application of BMS to a certain extent and hinders the development of electric vehicles. [0003] In the development of BMS, it is inevitable to upgrade and optimize its functions. Because BMS is mostly integrated in the battery box, it is very laborious and time-consuming to open the battery box every time the program is updated. Therefore, the update program cannot use a direct programming interface,...
Claims
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IPC IPC(8): G06F9/445
Inventor 刘飞文锋阮旭松刘忠其
Owner HUIZHOU EPOWER ELECTRONICS