Power-off protection system and method, electric vehicle, electronic equipment and storage medium

Abstract

The invention provides a power-off protection system and a method, an electric vehicle, a storage medium and electronic equipment, the power-off protection system comprises a battery loop, wherein a battery pack is connected in the battery loop; a high-voltage loop, wherein at least one high-voltage electric appliance is connected in the high-voltage loop, and the battery pack is used for supplying power to the high-voltage electric appliance; a main relay which is connected with the battery loop and is used for controlling the on-off of the battery loop; a delay switch device which is used for receiving the sudden stop control instruction and controlling the main relay to be switched off after preset time under the condition that the sudden stop control instruction is received; and a control device which is used for monitoring whether the time delay switch device receives the sudden stop control instruction or not, and controlling all the high-voltage electric appliances to stop working within preset time under the condition that the time delay switch device receives the sudden stop control instruction. The power-off protection system provided by the invention can reduce the possibility of arc discharge or adhesion in the disconnection process of the main relay.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a power-off protection system, method, electronic equipment and storage medium. Background technique [0002] In the development stage of new energy vehicles, the high-voltage power-off strategy is usually not perfect. In this case, due to the large overcurrent of the main relay of the battery pack, breaking the coil circuit of the main relay of the battery pack through the emergency stop switch is very likely to cause arcing of the contacts of the main relay during the disconnection process, seriously Sometimes, the problem of main relay sticking may even occur, and after the main relay sticks, the battery pack needs to be sent back to the battery manufacturer to unpack and replace the main relay, thereby increasing the maintenance cost of the main relay. Contents of the invention [0003] The present invention aims to solve at least one of the technical proble...

AI Technical Summary

Problems solved by technology

In this case, due to the large overcurrent of the main relay of the battery pack, breaking the coil circuit of the main relay of the battery pack through the emergency stop switch is very likely to cause arcing of the contacts of the main relay during the disconnection process, seriously Sometimes the main relay sticking problem may even occur, and after the main relay sticking, the battery pack needs to be sent back to the battery manufacturer to unpack and replace the main relay, thus increasing the maintenance cost of the main relay

Images