Method and device for flashing ecu software of electric vehicle
A technology for electric vehicles and writing devices, which is applied to vehicle components, software deployment, transportation and packaging, etc., and can solve problems such as failure of low-voltage batteries
Active Publication Date: 2021-09-14
苏州艾普乐思新能源动力系统科技有限公司
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Problems solved by technology
The current technical solutions for remote flashing only consider the entire flashing process itself, such as the Chinese patent "Electric Vehicle and Its Remote Program Update Control Method" with the publication number CN105974830A, and the Chinese patent "A remote flashing method" with the publication number CN106682519A The method and system of the vehicle controller program" does not consider the low-voltage battery power loss problem generated during the actual flashing process
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[0025] The present invention will be further described below in conjunction with embodiment, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art can modify various equivalent forms of the present invention All fall within the scope defined by the appended claims of this application.
[0026] Please combine figure 1 with figure 2 As shown, the flashing device for the on-board ECU software of an electric vehicle involved in this embodiment includes: a cloud 1 that provides the ECU software package to be flashed and sends it to the on-board terminal 2 through a wireless network. The vehicle-mounted terminal 2 is used to obtain the ECU software package to be written, and send the target ECU diagnosis CAN ID, "stop communication" and "stop diagnosis" requests corresponding to the ECU software package to be wr...
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The invention discloses a method for flashing the vehicle-mounted controller software of an electric vehicle, comprising steps: S1, the vehicle-mounted terminal obtains the ECU software package to be flashed, and the whole vehicle is powered on at low voltage to ensure that each ECU is initialized; S2, the initialization of each ECU is completed Finally, the vehicle is powered on at high voltage; S3. The gateway judges whether the ECU software package to be flashed is the ECU software package of the power bus. If it is "No", then the whole vehicle is powered on at high voltage for flashing; S4, repeat step S3 until all the ECU software packages to be flashed are finished flashing; The module charges the low-voltage battery. The invention also discloses a flashing device for the vehicle-mounted controller software of the electric vehicle. The method of the present invention considers the flashing mechanism of the vehicle-mounted ECU of the power bus and the non-power bus respectively. When the flashing of the vehicle-mounted ECU of the non-power bus is performed, the whole vehicle charges the low-voltage battery in a high-voltage state to avoid the power loss problem.
Description
technical field [0001] The invention relates to a method for flashing ECU software, in particular to a method for flashing ECU software onboard an electric vehicle. Background technique [0002] With the development of intelligence and networking of electric vehicles, the number of ECUs (Electronic Control Units) on-board electric vehicles is increasing, and the software flashing and upgrading of on-board ECUs is becoming more and more frequent. At the same time, the software packages of vehicle ECUs also tend to increase. Larger software packages are basically concentrated in non-power bus vehicle ECUs, such as: vehicle entertainment systems and driving assistance systems. The size of software packages has reached MByte level, while power bus vehicle ECU software The packet size basically does not increase significantly, generally at the KByte level. Therefore, the software flashing time becomes longer and longer, and the power consumption of the low-voltage battery is get...
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IPC IPC(8): G06F8/65B60R16/03
CPCB60R16/03G06F8/65
Inventor 李亚辉
Owner 苏州艾普乐思新能源动力系统科技有限公司