Battery pack remote preheating control method and system

Abstract

The invention relates to a battery pack remote preheating control system and method. The method comprises: setting a travel plan and battery preheating settings by a user; according to travel plan time and estimated battery heating time, calculating appointment waiting time; when a timing end moment arrives, according to a remote battery preheating request sent by an Internet of Vehicles service platform, waking up nodes such as a vehicle controller/a battery management system/a DCDC and the like through a CAN bus; and after high-voltage power-on of a vehicle is completed, controlling a battery pack heating accessory to heat a battery; after preheating is completed, reminding the user to use the vehicle. According to the battery pack remote preheating control method and system, reservation setting can be achieved through a remote terminal, the vehicle does not need to be kept in a high-voltage or low-voltage wake-up state, high-voltage safety accidents and the risk of storage battery feeding are avoided, the reasonable battery preheating temperature is automatically calculated according to the vehicle using time or the covered distance planned according to the journey, and battery preheating in a gun inserting state and a gun non-inserting state is considered, so that unnecessary electric energy waste is avoided.

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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