Vehicle and thermal management control method and device therefor, and storage medium

Abstract

A method for controlling thermal management of a vehicle is provided. The vehicle includes an engine and a thermal management system. The thermal management system includes a water pump. The engine and the water pump are connected to form a first cooling circulation. The method includes: controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed. In response to that a current temperature of the engine is less than or equal to a temperature threshold, a total engine power is greater than or equal to a power threshold, and a current vehicle speed is less than or equal to a vehicle speed threshold, controlling the water pump to periodically switch between a start state and a stop state.

What is claimed is: 
     
         1 . A method for controlling thermal management of a vehicle, the vehicle comprising an engine and a thermal management system, the thermal management system comprising a water pump, and the engine and the water pump being connected to form a first cooling circulation, the method comprising:
 controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, wherein   in response to that the current temperature of the engine is less than or equal to a temperature threshold, the total engine power is greater than or equal to a power threshold, and the current vehicle speed is less than or equal to a vehicle speed threshold, controlling the water pump to periodically switch between a start state and a stop state.   
     
     
         2 . The method according to  claim 1 , wherein the controlling the water pump to periodically switch between a start state and a stop state comprises:
 in response to that the water pump is in the start state, controlling a rotation speed of the water pump is to be a safe rotation speed of the water pump.   
     
     
         3 . The method according to  claim 1 , wherein the controlling the water pump to periodically switch between a start state and a stop state comprises:
 after the water pump is in the start state for a start time, controlling the water pump to switch to the stop state; and after the water pump is in the stop state for a stop time, controlling the water pump to switch to the start state,   wherein the start time and the stop time are fixed values, or wherein the start time positively correlates with the current vehicle speed and the stop time inversely correlates with the current vehicle speed.   
     
     
         4 . The method according to  claim 1 , wherein the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises:
 in response to that the current temperature of the engine is less than or equal to the temperature threshold, and that the total engine power is less than the power threshold, controlling the water pump to stop.   
     
     
         5 . The method according to  claim 1 , wherein the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises:
 in response to that the current temperature of the engine is less than or equal to the temperature threshold, that the total engine power is greater than or equal to the power threshold, and that the current vehicle speed is greater than the vehicle speed threshold, controlling a rotation speed of the water pump to be a safe rotation speed of the water pump; or   in response to that the current temperature of the engine is less than or equal to the temperature threshold, the total engine power is greater than or equal to the power threshold, and the current vehicle speed is greater than the vehicle speed threshold, controlling a rotation speed of the water pump to be greater than a safe rotation speed of the water pump and positively correlate with the current vehicle speed.   
     
     
         6 . The method according to  claim 1 , wherein
 the thermal management system further comprises an air-cooling radiator and a thermostat, and the air-cooling radiator is connected, via the thermostat, to the engine and the water pump, to form a second cooling circulation; and   the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises: in response to that the current temperature of the engine is less than or equal to the temperature threshold, controlling a rotation speed of the air-cooling radiator to zero, and controlling an opening of the thermostat to zero.   
     
     
         7 . The method according to  claim 1 , wherein
 the thermal management system further comprises an air-cooling radiator and a thermostat, and the air-cooling radiator is connected, via the thermostat, to the engine and the water pump, to form a second cooling circulation; and
 the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises: in response to that the current temperature of the engine is greater than the temperature threshold, and an opening of the thermostat is greater than or equal to an opening threshold, determining a total target heat dissipation by looking up a lookup table of minimum fuel consumption of the engine according to a current rotation speed of the engine, a current torque of the engine, and a current ambient temperature; 
 determining a target rotation speed of the water pump and a target rotation speed of the air-cooling radiator by looking up a lookup table of minimum power consumption of the thermal management system according to the total target heat dissipation, an air intake flow rate of the air-cooling radiator, and the current ambient temperature; and 
 controlling a rotation speed of the water pump to be the target rotation speed of the water pump, and controlling a rotation speed of the air-cooling radiator to be the target rotation speed of the air-cooling radiator. 
   
     
     
         8 . The method according to  claim 7 , wherein the determining a total target heat dissipation comprises:
 determining a target temperature of the engine by looking up the lookup table of minimum fuel consumption of the engine according to the current rotation speed of the engine, the current torque of the engine, and the current ambient temperature;   determining, according to the current rotation speed of the engine and the current torque of the engine, heat generated by the engine; and   determining, according to the current temperature of the engine, the target temperature of the engine, and the heat generated by the engine, the total target heat dissipation.   
     
     
         9 . The method according to  claim 1 , wherein
 the thermal management system further comprises an air-cooling radiator and a thermostat, and the air-cooling radiator is connected, via the thermostat, to the engine and the water pump, to form a second cooling circulation; and   the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises:
 in response to that the current temperature of the engine is greater than or equal to the temperature threshold, and an opening of the thermostat is less than an opening threshold, controlling a rotation speed of the water pump to be a safe rotation speed of the water pump, and controlling a rotation speed of the air-cooling radiator to zero; 
 determining a target temperature of the engine by looking up a lookup table of minimum fuel consumption of the engine according to a current rotation speed of the engine, a current torque of the engine, and a current ambient temperature; 
 determining, according to the current temperature of the engine and the target temperature of the engine, a target opening of the thermostat; and 
 controlling the opening of the thermostat to be the target opening of the thermostat. 
   
     
     
         10 . A non-transitory computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, causes the processor to perform operations comprising:
 controlling a water pump according to a current temperature of an engine, a total engine power, and a current vehicle speed, wherein   in response to that the current temperature of the engine is less than or equal to a temperature threshold, the total engine power is greater than or equal to a power threshold, and the current vehicle speed is less than or equal to a vehicle speed threshold, controlling the water pump to periodically switch between a start state and a stop state, and   a vehicle comprises the engine and a thermal management system, the thermal management system comprising the water pump, and the engine and the water pump are connected to form a first cooling circulation.   
     
     
         11 . A device for controlling thermal management of a vehicle, comprising a processor and a storage, the processor and the storage being connected to each other,
 the storage being configured to store a computer program, the computer program comprising program instructions, and the processor being configured to execute the program instructions to perform operations comprising:   controlling a water pump according to a current temperature of an engine, a total engine power, and a current vehicle speed, wherein   in response to that the current temperature of the engine is less than or equal to a temperature threshold, the total engine power is greater than or equal to a power threshold, and the current vehicle speed is less than or equal to a vehicle speed threshold, controlling the water pump to periodically switch between a start state and a stop state, and   the vehicle comprises the engine and a thermal management system, the thermal management system comprising the water pump, and the engine and the water pump are connected to form a first cooling circulation.   
     
     
         12 . The device according to  claim 11 , wherein the controlling the water pump to periodically switch between a start state and a stop state comprises:
 in response to that the water pump is in the start state, controlling a rotation speed of the water pump is to be a safe rotation speed of the water pump.   
     
     
         13 . The device according to  claim 11 , wherein the controlling the water pump to periodically switch between a start state and a stop state comprises:
 after the water pump is in the start state for a start time, controlling the water pump to switch to the stop state; and after the water pump is in the stop state for a stop time, controlling the water pump to switch to the start state,   wherein the start time and the stop time are fixed values, or wherein the start time positively correlates with the current vehicle speed and the stop time inversely correlates with the current vehicle speed.   
     
     
         14 . The device according to  claim 11 , wherein the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises:
 in response to that the current temperature of the engine is less than or equal to the temperature threshold, and that the total engine power is less than the power threshold, controlling the water pump to stop.   
     
     
         15 . The device according to  claim 11 , wherein the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises:
 in response to that the current temperature of the engine is less than or equal to the temperature threshold, that the total engine power is greater than or equal to the power threshold, and that the current vehicle speed is greater than the vehicle speed threshold, controlling a rotation speed of the water pump to be a safe rotation speed of the water pump; or   in response to that the current temperature of the engine is less than or equal to the temperature threshold, the total engine power is greater than or equal to the power threshold, and the current vehicle speed is greater than the vehicle speed threshold, controlling a rotation speed of the water pump to be greater than a safe rotation speed of the water pump and positively correlate with the current vehicle speed.   
     
     
         16 . The device according to  claim 11 , wherein
 the thermal management system further comprises an air-cooling radiator and a thermostat, and the air-cooling radiator is connected, via the thermostat, to the engine and the water pump, to form a second cooling circulation; and   the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises: in response to that the current temperature of the engine is less than or equal to the temperature threshold, controlling a rotation speed of the air-cooling radiator to zero, and controlling an opening of the thermostat to zero.   
     
     
         17 . The device according to  claim 11 , wherein
 the thermal management system further comprises an air-cooling radiator and a thermostat, and the air-cooling radiator is connected, via the thermostat, to the engine and the water pump, to form a second cooling circulation; and
 the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises: in response to that the current temperature of the engine is greater than the temperature threshold, and an opening of the thermostat is greater than or equal to an opening threshold, determining a total target heat dissipation by looking up a lookup table of minimum fuel consumption of the engine according to a current rotation speed of the engine, a current torque of the engine, and a current ambient temperature; 
 determining a target rotation speed of the water pump and a target rotation speed of the air-cooling radiator by looking up a lookup table of minimum power consumption of the thermal management system according to the total target heat dissipation, an air intake flow rate of the air-cooling radiator, and the current ambient temperature; and 
   controlling a rotation speed of the water pump to be the target rotation speed of the water pump, and controlling a rotation speed of the air-cooling radiator to be the target rotation speed of the air-cooling radiator.   
     
     
         18 . The device according to  claim 17 , wherein the determining a total target heat dissipation comprises:
 determining a target temperature of the engine by looking up the lookup table of minimum fuel consumption of the engine according to the current rotation speed of the engine, the current torque of the engine, and the current ambient temperature;   determining, according to the current rotation speed of the engine and the current torque of the engine, heat generated by the engine; and   determining, according to the current temperature of the engine, the target temperature of the engine, and the heat generated by the engine, the total target heat dissipation.   
     
     
         19 . The device according to  claim 11 , wherein
 the thermal management system further comprises an air-cooling radiator and a thermostat, and the air-cooling radiator is connected, via the thermostat, to the engine and the water pump, to form a second cooling circulation; and   the controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed, comprises:
 in response to that the current temperature of the engine is greater than or equal to the temperature threshold, and an opening of the thermostat is less than an opening threshold, controlling a rotation speed of the water pump to be a safe rotation speed of the water pump, and controlling a rotation speed of the air-cooling radiator to zero; 
 determining a target temperature of the engine by looking up a lookup table of minimum fuel consumption of the engine according to a current rotation speed of the engine, a current torque of the engine, and a current ambient temperature; 
 determining, according to the current temperature of the engine and the target temperature of the engine, a target opening of the thermostat; and 
 controlling the opening of the thermostat to be the target opening of the thermostat. 
   
     
     
         20 . A vehicle, comprising an engine and a thermal management system, the thermal management system comprising a water pump, an air-cooling radiator, a thermostat, and a device for controlling thermal management of the vehicle according to  claim 11 ,
 the engine and the water pump being connected to form a first cooling circulation, and the air-cooling radiator being connected, via the thermostat, to the engine and the water pump, to form a second cooling circulation.