CN-122008772-A - Control method and device for heating mode of vehicle air conditioner, storage medium and electronic device

CN122008772ACN 122008772 ACN122008772 ACN 122008772ACN-122008772-A

Abstract

The application discloses a control method and a device for a heating mode of a vehicle air conditioner, a storage medium and an electronic device, and relates to the technical field of vehicles, wherein the control method for the heating mode of the vehicle air conditioner comprises the steps of starting a double-heat-source heating mode when heating requirements exist, and acquiring real-time air outlet temperature; the method comprises the steps of obtaining a real-time vehicle speed under the condition that the real-time air outlet temperature reaches a target air outlet temperature, controlling a dual-heat source heating mode to be in a single-air heat source mode when the real-time vehicle speed is smaller than or equal to a set vehicle speed threshold value and a battery of the vehicle meets heating requirements, controlling the dual-heat source heating mode to be in a single-air heat source mode to heat through the single-air heat source mode, and controlling the dual-heat source heating mode to be in a single-water heat source mode to heat when the real-time vehicle speed is larger than the vehicle speed threshold value and the real-time water temperature of the vehicle meets water temperature conditions and the heating requirements. The problem of under vehicle speed variation, the fluctuation of air-out temperature etc. under the condition, the heat pump system still keeps two heat source heating mode heating, leads to the energy extravagant is solved.

Inventors

ZHENG GAOXIANG
NIU FENGXIAN
CHEN SIYI
HUANG QINGRUI
LIU FEI

Assignees

上海汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (11)

1. A control method of a heating mode of a vehicle air conditioner, comprising: under the condition that a vehicle has a heating requirement, starting a double-heat-source heating mode of the vehicle air conditioner, and acquiring the real-time air outlet temperature of an air outlet of the vehicle air conditioner when the double-heat-source heating mode is operated; acquiring the real-time speed of the vehicle under the condition that the real-time air outlet temperature reaches the target air outlet temperature; and when the real-time vehicle speed is greater than the vehicle speed threshold value, the real-time water temperature of the vehicle meets the water temperature condition, and the estimated heating power in the single-water heat source mode meets the heating condition, controlling the double-heat source heating mode to be switched into the single-water heat source mode so as to heat by the single-water heat source mode.
2. The method of claim 1, wherein the step of determining whether the estimated heating power in the single air heat source mode satisfies a heating condition comprises: and under the condition that the estimated heating power in the single air heat source mode is larger than the required heating power, determining that the estimated heating power in the single air heat source mode meets heating conditions, wherein the estimated heating power in the single air heat source mode is determined according to the ambient temperature.
3. The method according to claim 2, characterized in that the required heating power is determined by: acquiring air inlet temperature, air quantity and air specific heat capacity of the vehicle air conditioner; And determining a difference value between the real-time air outlet temperature and the target air outlet temperature, and determining the product of the difference value and the air inlet temperature of the air conditioner, the air quantity of the air conditioner and the specific heat capacity of the air as the required heating power.
4. The method of claim 1, wherein the step of determining whether the estimated heating power in the single water heat source mode satisfies a heating condition comprises: And under the condition that the estimated heating power in the single water heat source mode is larger than the required heating power, determining that the estimated heating power in the single water heat source mode meets the heating condition.
5. The method of claim 1, wherein the step of determining the estimated heating power in the single water heat source mode comprises: acquiring the motor heating value, the heat pump system heating efficiency and the heat pump system energy efficiency of the vehicle; Determining a first heating parameter and a second heating parameter, and determining a product obtained by multiplying the quotient of the first heating parameter and the second heating parameter by the heating efficiency of the heat pump system as the estimated heating power in the single water heat source mode, wherein the first heating parameter is determined based on the product of the motor heating value of the vehicle and the heating efficiency of the heat pump system, and the second heating parameter is determined based on the difference between the energy efficiency of the heat pump system and the heating efficiency of the heat pump system and the motor heating value of the vehicle.
6. The method of claim 1, wherein after obtaining the real-time vehicle speed of the vehicle, the method further comprises: and closing the active air inlet grille of the vehicle under the condition that the real-time vehicle speed is larger than the vehicle speed threshold value, the real-time water temperature of the vehicle meets the water temperature condition and the estimated heating power in the single water heat source mode meets the heating condition.
7. The method of claim 1, wherein the step of determining whether the battery of the vehicle meets a heating demand comprises: Acquiring the battery core temperature of the battery, and determining that the battery meets the heating requirement under the condition that the battery core temperature does not reach a set temperature threshold value; Or alternatively, the first and second heat exchangers may be, The method comprises the steps of acquiring historical operation data of a battery, wherein the historical operation data of the battery at least comprises charge states, charge and discharge data and internal resistance of the battery at a plurality of historical moments; Predicting a temperature parameter of the battery in a preset time period based on the historical operation data, wherein the temperature parameter comprises predicted battery cell temperatures at a plurality of preset moments; And determining a target cell temperature based on the plurality of predicted cell temperatures, and determining that the battery of the vehicle meets a heating requirement under the condition that the target cell temperature is in a set temperature range.
8. A control device of a heating mode of a vehicle air conditioner, the device comprising: the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for starting a double-heat-source heating mode of the vehicle air conditioner under the condition that a heating requirement exists on a vehicle, and acquiring real-time air outlet temperature of an air outlet of the vehicle air conditioner when the double-heat-source heating mode is operated; The acquisition module is further used for acquiring the real-time speed of the vehicle under the condition that the real-time air outlet temperature reaches the target air outlet temperature; The switching module is used for controlling the dual-heat source heating mode to be switched to the single-air heat source mode so as to heat through the single-air heat source mode when the real-time vehicle speed is smaller than or equal to a set vehicle speed threshold value, the battery of the vehicle meets the heating requirement, and the estimated heating power in the single-air heat source mode meets the heating condition; The switching module is further configured to control the dual-heat-source heating mode to switch to the single-water heat-source mode to perform heating in the single-water heat-source mode when the real-time vehicle speed is greater than the vehicle speed threshold, the real-time water temperature of the vehicle meets a water temperature condition, and the estimated heating power in the single-water heat-source mode meets a heating condition.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program, when run, performs the method of any one of claims 1 to 7.
10. An electronic device comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to execute the method according to any of the claims 1 to 7 by means of the computer program.
11. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the method of any of claims 1 to 7.

Description

Control method and device for heating mode of vehicle air conditioner, storage medium and electronic device Technical Field The application relates to the technical field of vehicles, in particular to a control method and device for a heating mode of a vehicle air conditioner, a storage medium and an electronic device. Background With the rise of energy saving, emission reduction and environmental protection consciousness, electric Vehicles (EVs) are being used as representatives of green travel, and market share and user acceptance of the EVs are gradually increasing. However, electric vehicles still face some challenges in practical use, especially endurance, which is more prominent in low temperature environments. When the ambient temperature is reduced, the heating demand of the passenger cabin is large, and the cruising ability of the electric vehicle is significantly affected due to the low-temperature discharge decay characteristic of the battery. In the conventional technology, in order to improve the comprehensive energy consumption of the whole vehicle, the electric vehicle often adopts a heat pump system to heat. In order to realize the maximum utilization of the heat source of the whole vehicle, the heat pump system generally adopts a double-heat source heating mode to heat the battery and the passenger cabin so as to meet the heating requirements of the battery and the passenger cabin. However, the dual heat source heating mode may reduce energy utilization efficiency of the vehicle in some cases, particularly in the case of a vehicle speed change, an exhaust air temperature fluctuation, etc., and the heat pump system still maintains the dual heat source heating mode for heating, resulting in energy waste. Therefore, how to dynamically switch the dual-heat-source heating mode to reduce energy waste and further improve the endurance mileage of the electric automobile has become a problem to be solved. Disclosure of Invention The embodiment of the application provides a control method and device for a heating mode of a vehicle air conditioner, a storage medium, an electronic device and a computer program product, which at least solve the problem of energy waste caused by the fact that a heat pump system still keeps heating in the double-heat-source heating mode under the conditions of vehicle speed change, air outlet temperature fluctuation and the like in the related art. According to one aspect of the embodiment of the application, a control method of a heating mode of a vehicle air conditioner is provided, wherein the control method comprises the steps of starting a double-heat-source heating mode of the vehicle air conditioner when a vehicle has heating requirements, obtaining real-time air outlet temperature of an air outlet of the vehicle air conditioner when the double-heat-source heating mode is operated, obtaining real-time vehicle speed of the vehicle when the real-time air outlet temperature reaches a target air outlet temperature, controlling the double-heat-source heating mode to be switched to a single-water heat-source mode when the real-time vehicle speed is smaller than or equal to a set vehicle speed threshold value, a battery of the vehicle meets heating requirements, and controlling the double-heat-source heating mode to be switched to the single-air heat-source mode when estimated heating power in the single-air heat-source mode meets heating conditions, so that heating is performed in the single-water heat-source mode when the real-time vehicle speed is larger than the vehicle speed threshold value, real-time water temperature of the vehicle meets water temperature conditions, and the estimated heating power in the single-water heat-source mode meets heating conditions. In one exemplary embodiment, the required heating power is determined by obtaining an air conditioner inlet air temperature, an air conditioner air volume and an air specific heat capacity of the vehicle air conditioner, determining a difference between a real-time outlet air temperature and a target outlet air temperature, and determining a product of the difference and the air conditioner inlet air temperature, the air conditioner air volume and the air specific heat capacity as the required heating power. In one exemplary embodiment, the step of determining whether the estimated heating power in the single water heat source mode satisfies a heating condition includes determining that the estimated heating power in the single water heat source mode satisfies a heating condition in a case where the estimated heating power in the single water heat source mode is greater than a required heating power. In an exemplary embodiment, the step of determining the estimated heating power in the single water heat source mode includes obtaining a motor heating value of the vehicle, a heating efficiency of a heat pump system, and an energy efficiency of the heat pump system, determining a first heating parameter and a se