Battery pack remote preheating control method and control system

Abstract

The invention relates to a battery pack remote preheating control system and control method. The user sets the driving plan and the battery preheating setting; calculates the reserved waiting time according to the travel plan time and the estimated battery heating time, and reaches the timing end time, according to the Internet of Vehicles service The remote battery preheating request sent by the platform, CAN wakes up the vehicle controller / battery management system / DCDC and other nodes, after the vehicle is powered on at high voltage, it controls the battery pack heating accessories to heat the battery; after the preheating is completed, the user is reminded to use the car . The battery pack remote preheating control method and control system of the present invention, the reservation setting can be set through the remote terminal, without the need for the vehicle to maintain a high-voltage or low-voltage wake-up state, avoiding the risk of high-voltage safety accidents and battery power feeding, according to the planned car time or The mileage automatically calculates a reasonable battery warm-up temperature, taking into account the battery warm-up in both the gun-inserted and non-inserted states to avoid unnecessary waste of electric energy.

Description

technical field [0001] The invention relates to a control system and a control method of an electric vehicle, in particular to a remote preheating control method and a control system of a battery pack. Background technique [0002] In order to reduce the dependence on traditional fossil energy and realize the "carbon peak" and "carbon neutral" energy-saving and emission-reduction strategies, electric vehicles have become an important development direction of the future automotive industry. In recent years, with the support of policies and the joint efforts of the industry, electric vehicle technology has made great progress. By the end of 2020, the number of electric vehicles in China will reach 4 million. [0003] However, electric vehicles still have the problems of severe low-temperature endurance attenuation and limited power, which seriously affects the promotion of electric vehicles in northern regions. The low-temperature battery life of electric vehicles is affected...

AI Technical Summary

Problems solved by technology

[0008] 1) It is impossible to reserve the time for remote heating, and the user has to wait for the preheating to be completed when the user needs to use the car immediately;

[0009] 2) The scheduled timing process relies on the timing module of the vehicle controller, which makes the vehicle unable to sleep, resulting in the risk of low-voltage battery feeding;

[0010] 3) It is impossible to take into account the two customer usage scenarios of connecting the slow charging gun and not inserting the slow charging gun;

[0011] 4) When performing remote battery warm-up without plugging in the slow charging gun, if the customer has no travel plans or the driving time is too short after the warm-up is completed, unnecessary power waste will be caused due to the battery heating power consumption but the driving time is too short

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