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Vehicle can communication system and software upgrading method, device, system and vehicle

A CAN communication and CAN bus technology, applied in the field of vehicles, can solve the problems of slow CAN network communication rate, large upgrade program, slow software upgrade process, etc., and achieve the effect of shortening software upgrade time, improving speed, and speeding up transmission.

Active Publication Date: 2022-01-07
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the slow communication rate of the CAN network and the large upgrade program that needs to be transmitted during the upgrade process, the software upgrade process of the existing vehicle electronic control equipment is relatively slow and cannot adapt to the explosive increase in the amount of data today.

Method used

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  • Vehicle can communication system and software upgrading method, device, system and vehicle
  • Vehicle can communication system and software upgrading method, device, system and vehicle
  • Vehicle can communication system and software upgrading method, device, system and vehicle

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Embodiment Construction

[0036] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0037] The present disclosure provides a vehicle CAN communication system, which may include: an OBD (On Board Diagnostic) interface connected to the vehicle CAN bus, a plurality of vehicle electronic control devices, and a first terminal resistance and the second terminal resistance, wherein the OBD interface is used to connect the external upgrade device to the CAN bus of the vehicle so that the upgrade device can communicate with the vehicle electronic control device, the first terminal resistance and the second terminal resistance are set in different In the vehicle electronic control device, the resistance values ​​of the first terminal resistor and the ...

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Abstract

The present disclosure relates to a software upgrading method, device, system, vehicle and storage medium. The method is applied to the vehicle-mounted electronic control equipment connected to the CAN bus of the vehicle, and the resistance values ​​of the first terminal resistor and the second terminal resistor connected to the CAN bus of the vehicle are both less than 120Ω. The method includes: using the first communication rate Receive the first message sent by the external upgrade device; in the case of determining that it is the target vehicle-mounted electronic control device according to the identification information, send a response message to the upgrade device; if the response message is sent, receive the message sent by the upgrade device at the first communication rate second message; in response to the second message, switch the communication rate to the second communication rate; receive the upgrade program sent by the upgrade device at the second communication rate, and install the upgrade program. The communication rate can be increased from the first communication rate to the second communication rate without replacing the CAN bus of the whole vehicle, the transmission of the upgrade program is accelerated, the speed of software upgrade is improved, and the time for software upgrade is shortened.

Description

technical field [0001] The present disclosure relates to the technical field of vehicles, in particular, to a vehicle CAN communication system and a software upgrading method, device, system and vehicle. Background technique [0002] With the development of vehicle electronic technology, vehicle intelligence is getting higher and higher, and vehicle-mounted electronic control equipment is becoming more and more abundant, both in terms of type and quantity. Vehicle-mounted electronic control equipment integrates software and hardware structures. Upgrading the software of vehicle-mounted electronic control equipment can optimize vehicle-mounted electronic control equipment and improve the performance and safety of vehicles to a certain extent. Therefore, there is a need for software upgrades for vehicle-mounted electronic control equipment. More frequent. Most of the software upgrades of existing vehicle-mounted electronic control devices are performed based on CAN (Controlle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F8/65
CPCG06F8/65
Inventor 汪江涛郝兴峰
Owner BYD CO LTD
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