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Vehicle control unit power-off management method

A vehicle controller and management method technology, applied in the field of vehicle controller power outage management, can solve problems such as the consumption of battery power, and achieve the effect of improving the car experience and increasing the parking time

Pending Publication Date: 2022-06-03
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method for managing the power failure of the vehicle controller, so as to solve the problem in the prior art that the CAN network of the vehicle is always awakened and the power consumption of the storage battery is consumed when the ECU fails.

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  • Vehicle control unit power-off management method
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Embodiment Construction

[0010] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations of the present invention. All other embodiments obtained without creative work fall within the protection scope of the present invention.

[0011] The present invention provides a power-off management method for a vehicle controller. In the present invention, the wake-up and maintenance of the vehicle network are controlled by a network management frame (NM frame for short), and an application frame (application frame) APP frame for short) can neither wake up the network nor keep the network from sleeping. If the ECU wants to wake up the network, it needs to send an NM message first. The vehicle control module (VCM for short) receives the NM frame sent by the ECU on each CAN line. ...

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Abstract

The invention discloses a vehicle control unit power-off management method which comprises the following steps: judging and analyzing whether a vehicle CAN (Controller Area Network) enters a sleep state or not, and timely processing the vehicle CAN according to a judgment and analysis result, so as to avoid the situation that the vehicle parking time is prolonged due to the fact that the CAN cannot enter the sleep state due to an ECU (Electronic Control Unit) fault and the electric quantity of a storage battery is consumed; and the user can still normally ignite and use the vehicle even after a long-time business trip, so that the vehicle use experience of the user is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent vehicles, in particular to a power-off management method for a vehicle controller. Background technique [0002] With the development of automobile intelligence, vehicle functions are becoming more and more abundant, and there are more and more vehicle ECUs. The vehicle also has various functions after it is turned off or under high pressure (hereinafter referred to as the OFF gear), and the power supply at this time comes from the low-voltage battery. If one of the ECUs has been working, the CAN network of the entire vehicle will also be in a wake-up state, and the current consumed at this time is greater than 2A. If the battery power is consumed for a long time, there will be a risk of feeding, and the vehicle cannot be unlocked and cannot be started. [0003] In the prior art, whether the function assignment corresponding to each ECU is turned on in the OFF gear is usually changed, and th...

Claims

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Application Information

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IPC IPC(8): B60R16/033B60L1/00B60R16/023B60L3/00
CPCB60R16/033B60L1/00B60R16/0234B60L3/0084
Inventor 唐军华文涛侯亚飞张鹏
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD