Power control method and device and vehicle

Abstract

The embodiment of the invention discloses a power control method and device and a vehicle. The method comprises the steps that a heating operation request acting on a vehicle is responded, and the working condition of the vehicle is obtained; if the working condition is the hybrid working condition, the engine water temperature, the warm air box body water temperature and the target heating temperature of the vehicle and the reference operation power of an engine are obtained; first target power corresponding to the PTC electric heater is obtained based on the engine water temperature, the warm air box body water temperature and the target heating temperature, and second target power corresponding to the engine is obtained based on the engine water temperature, the warm air box body water temperature, the target heating temperature and the reference operation power; and the PTC electric heater is controlled to operate at the first target power, and the engine is controlled to operate at the second target power. According to the method, the engine can be actively called to generate waste heat, and the operation power of the engine and the PTC electric heater is controlled, so that the vehicle under the hybrid working condition can utilize the waste heat of the engine to heat for a longer time to a greater extent.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle air conditioning, and more specifically, to a power control method, device and vehicle. Background Art

[0002] In order to promote energy conservation and emission reduction, more and more users are starting to use new energy vehicles. New energy vehicles include pure electric vehicles and hybrid vehicles. Pure electric vehicles usually use PTC heaters for heating to provide heat sources, and PTC heaters are also widely used in the air conditioning heating system of hybrid vehicles. When a hybrid vehicle is in pure electric operation, a PTC heater is required for heating and heating the battery. The PTC heater consumes a lot of power and can easily affect the vehicle's endurance. When a hybrid vehicle is in hybrid operation, the air conditioning system can use the engine waste heat for heating to meet the user's warm air needs, but the generation of engine waste heat is not controlled by the air conditioning, but is determined by the vehicle's own hybrid energy control strategy and the owner's choice, which can easily lead to insufficient utilization of waste heat; and the short engine running time will cause the PTC heater to frequently heat, ultimately resulting in reduced energy efficiency. Summary of the invention

[0003] In view of the above problems, the present application proposes a power control method, device and vehicle to improve the above problems.

[0004] In a first aspect, the present application provides a power control method, the method comprising: responding to a heating operation request acting on a vehicle, obtaining the operating condition of the vehicle; if the operating condition is a hybrid operating condition, obtaining the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle; obtaining a first target power corresponding to the PTC electric heater based on the engine water temperature, heater box water temperature and target heating temperature, and obtaining a second target power corresponding to the engine based on the engine water temperature, heater box water temperature, target heating temperature and the reference operating power; controlling the PTC electric heater to operate at the first target power, and controlling the engine to operate at the second target power.

[0005] In a second aspect, the present application provides a power control device, which includes: an operating condition determination module, which is used to respond to a heating operation request acting on a vehicle and obtain the operating condition of the vehicle; an air-conditioning operation data acquisition module, which is used to obtain the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle if the operating condition is a hybrid operating condition; an air-conditioning control parameter acquisition module, which is used to obtain a first target power corresponding to the PTC electric heater based on the engine water temperature, heater box water temperature and target heating temperature, and to obtain a second target power corresponding to the engine based on the engine water temperature, heater box water temperature, target heating temperature and the reference operating power; an air-conditioning control module, which is used to control the PTC electric heater to operate at the first target power, and to control the engine to operate at the second target power.

[0006] In a third aspect, the present application provides a vehicle comprising one or more processors and a memory; one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the above-mentioned method.

[0007] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores program code, wherein the above method is executed when the program code is run.

[0008] The present application provides a power control method, device, vehicle and storage medium, which obtains the working condition of the vehicle by responding to a heating operation request acting on the vehicle; if the working condition is a hybrid working condition, obtains the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine; obtains the first target power corresponding to the PTC electric heater based on the engine water temperature, heater box water temperature and target heating temperature, and obtains the second target power corresponding to the engine based on the engine water temperature, heater box water temperature, target heating temperature and reference operating power; controls the PTC electric heater to operate at the first target power, and controls the engine to operate at the second target power. When the vehicle has a heating demand, this method can actively call on the engine to generate waste heat, and control the operating power of the engine and the PTC electric heater, so that the vehicle in the hybrid working condition can use the engine waste heat for heating for a longer time and to a greater extent, avoiding the PTC electric heater occupying a large amount of electricity in winter and affecting the vehicle's cruising range, thereby effectively reducing the energy consumption of hybrid vehicle air conditioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 A flow chart of a power control method proposed in an embodiment of the present application is shown.

[0011] Figure 2 A flow chart of a power control method proposed in another embodiment of the present application is shown.

[0012] Figure 3 A communication architecture diagram of a vehicle controller provided in an embodiment of the present application is shown.

[0013] Figure 4 A topological diagram of the air conditioning cooling system of a hybrid vehicle provided in an embodiment of the present application is shown.

[0014] Figure 5 A flow chart of a power control method proposed in yet another embodiment of the present application is shown.

[0015] Figure 6 A structural block diagram of a power control device proposed in an embodiment of the present application is shown.

[0016] Figure 7 A structural block diagram of a vehicle proposed in this application is shown. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] In the embodiment of the present application, the inventor proposes a power control method, device and vehicle, which obtains the working condition of the vehicle by responding to the heating operation request acting on the vehicle; if the working condition is a hybrid working condition, obtains the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine; obtains the first target power corresponding to the PTC electric heater based on the engine water temperature, heater box water temperature and target heating temperature, and obtains the second target power corresponding to the engine based on the engine water temperature, heater box water temperature, target heating temperature and reference operating power; controls the PTC electric heater to operate at the first target power, and controls the engine to operate at the second target power. This method can actively call the engine to generate waste heat and control the operating power of the engine and the PTC electric heater when the vehicle has a heating demand, so that the vehicle in the hybrid working condition can use the engine waste heat for heating for a longer time and to a greater extent, avoiding the PTC electric heater occupying a large amount of electricity in winter and affecting the vehicle's cruising range, thereby effectively reducing the energy consumption of hybrid vehicle air conditioning.

[0019] See also Figure 1 , is a power control method provided in an embodiment of the present application, the power control method can be applied to a vehicle, specifically can be used to control the air conditioning heating mode of a hybrid vehicle, the method comprising:

[0020] S110: In response to a heating operation request applied to a vehicle, an operating condition of the vehicle is acquired.

[0021] When the vehicle has a heating demand, different working conditions correspond to different air conditioning heating methods. Therefore, when a heating operation request acting on the vehicle is detected, the current working condition of the vehicle needs to be obtained. Optionally, the vehicle in this embodiment is a hybrid electric vehicle, and the vehicle includes two working conditions: pure electric working condition and hybrid working condition.

[0022] The vehicle in the implementation manner of the present application may be configured with a human-machine interface, and the user may control the vehicle's air conditioning system through the human-machine interface. Exemplarily, the vehicle's central control may be configured as a human-machine interface, and the user may select the air conditioning operating mode (for example, cooling mode or heating mode) by manipulating the human-machine interface. Optionally, if the user selects the heating mode, a heating operation request may be generated and sent to the vehicle's controller, so that the controller responds to the heating operation request and begins to obtain the vehicle's operating conditions. The controller may be a hybrid control unit (HCU) of the vehicle; in some other implementations, the controller may also be an air conditioning controller (HVAC) of the vehicle.

[0023] Optionally, virtual function buttons for controlling the air conditioner may be configured on the human-computer interaction interface, and the user may switch the working mode and / or working state of the air conditioner by touching the relevant buttons. The working modes may include a heating mode (also referred to as a winter mode) and a cooling mode (also referred to as a summer mode), and the gear names of the specific working modes may be set according to actual needs. Optionally, if the user touches and selects the heating mode, a heating operation request may be triggered. Similarly, if the user touches and selects the cooling mode, a cooling operation request may be triggered.

[0024] Optionally, a mechanical function button for controlling the air conditioner may be arranged around the central control panel of the vehicle or at other locations, so that the user can turn the air conditioner on and off and adjust the working mode of the air conditioner. In this way, if it is detected that the indicated position of the mechanical function button for controlling the air conditioner has changed (for example, it is detected that the indicated position of the mechanical function button has changed to point to the position where the heating mode is located), then a heating operation request may be triggered.

[0025] The present application can obtain the vehicle's operating condition by determining whether the engine can be turned on. For a hybrid vehicle, in the process of obtaining its operating condition, if its engine can be turned on, it can be determined that the vehicle is currently in a hybrid operating condition; if its engine cannot be turned on, it can be determined that the vehicle is currently in a pure electric operating condition.

[0026] In this embodiment, whether the engine can be started can be determined by the vehicle speed and the battery SOC (State of Charge). Optionally, if the vehicle speed is fast but the battery remaining power is insufficient, it can be determined that the engine cannot be started; if the vehicle battery remaining power is sufficient, regardless of the vehicle speed, it can be determined that the engine can be started.

[0027] S120: If the operating condition is a hybrid operating condition, the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle are obtained.

[0028] When the vehicle is in hybrid operation, the waste heat generated by the engine and the PTC electric heater can be used together to provide heating for the vehicle occupants. In order to prevent the PTC electric heater from occupying too much power under hybrid operation and affecting the vehicle's range, the operating power of the engine and the PTC electric heater can be controlled separately to fully utilize the waste heat generated by the engine and mainly use the waste heat generated by the engine to meet the customer's heating needs.

[0029] As an implementation method, if the vehicle is in a hybrid operating condition, the vehicle's engine water temperature, heater box water temperature, target heating temperature, and engine reference operating power can be obtained, and then the real and effective engine operating power and PTC electric heater operating power can be calculated based on these parameters. Among them, the engine water temperature represents the current water temperature of the engine, the heater box water temperature represents the current water temperature of the heater box of the PTC electric heater, the target heating temperature represents the heating temperature required or set by the user (passenger), and the engine reference operating power represents the maximum operating power of the engine (which is an operating limit of the engine).

[0030] As a method, the reference operating power of the engine can be obtained by checking the current vehicle speed to determine the maximum engine (engine can also be understood as a range extender or internal combustion engine) start power (gear) limited by the current NVH.

[0031] S130: Obtain a first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature and the target heating temperature, and obtain a second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power.

[0032] As an implementation method, a first target power corresponding to the PTC electric heater can be obtained based on the acquired engine water temperature, heater box water temperature and target heating temperature, and a second target power corresponding to the engine can be obtained based on the acquired engine water temperature, heater box water temperature, target heating temperature and reference operating power.

[0033] As a specific implementation method, the target air outlet temperature (required air conditioning load, i.e., the amount of heating required by the user) can be first obtained based on the target heating temperature, the internal and external temperatures of the vehicle, and the light intensity; then the engine target water temperature and the heater box target water temperature can be obtained based on the target air outlet temperature, the engine water temperature, and the heater box water temperature; and then the first target power corresponding to the PTC electric heater can be obtained based on the heater box water temperature and the heater box target water temperature.

[0034] Similarly, the second target power corresponding to the engine can be obtained based on the target water temperature of the engine, the target water temperature of the heater box, and the reference operating power of the engine. The target air outlet temperature, the target water temperature of the engine, and the target water temperature of the heater box can be obtained by referring to the relevant technology and will not be described in detail here.

[0035] In this embodiment, the specific values ​​of the first target power and the second target power may not be limited, and the relationship between the first target power and the second target power may change as the heating time increases. At the beginning of heating, the value of the first target power may be greater than the value of the second target power. At this time, the PTC electric heater is the main heat source and the engine is the auxiliary heat source, that is, the heating capacity of the PTC electric heater at the beginning of heating may be greater than the heating capacity of the engine residual heat (waste heat), so as to ensure that the heating temperature inside the vehicle can be quickly increased and the heating needs of the passengers can be met in time.

[0036] As the engine water channel temperature rises during the heating process, the value of the first target power can be slowly reduced, and the value of the second target power can be slowly increased, so that the value of the first target power can be changed to a value smaller than the second target power. At this time, the engine becomes the main heat source, and the PTC electric heater becomes an auxiliary heat source. That is, as the heating time increases, the heating amount of the engine waste heat (waste heat) will be greater than the heating amount of the PTC electric heater, so as to achieve longer and greater utilization of the engine waste heat for heating, thereby improving the heating efficiency in winter.

[0037] S140: Control the PTC electric heater to operate at the first target power, and control the engine to operate at the second target power.

[0038] As a method, the first target power obtained can be sent to the PTC electric heater to control the PTC electric heater to operate according to the first target power, and the second target power obtained can be sent to the HCU to control the engine to operate according to the second target power through the HCU, thereby achieving greater utilization of the engine waste heat for heating by controlling the engine's operating power, reducing the heating pressure of the PTC electric heater, and thereby improving the vehicle's endurance.

[0039] Compared with the prior art, when the vehicle's engine can be turned on, the present application will actively control the engine to generate waste heat for heating as long as the air conditioner has a heating demand, and it may even become the main heat source for heating needs, reducing the heating burden of the PTC electric heater, thereby improving the vehicle's endurance.

[0040] The present embodiment provides a power control method, which obtains the working condition of the vehicle by responding to a heating operation request acting on the vehicle; if the working condition is a hybrid working condition, obtains the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine; obtains a first target power corresponding to the PTC electric heater based on the engine water temperature, heater box water temperature and target heating temperature, and obtains a second target power corresponding to the engine based on the engine water temperature, heater box water temperature, target heating temperature and reference operating power; controls the PTC electric heater to operate at the first target power, and controls the engine to operate at the second target power. In the case of a heating demand for the vehicle, this method can actively call on the engine to generate waste heat, and control the operating power of the engine and the PTC electric heater, so that the vehicle in the hybrid working condition can use the engine waste heat for heating for a longer time and to a greater extent, avoiding the PTC electric heater occupying a large amount of electricity in winter and affecting the vehicle's cruising range, thereby effectively reducing the energy consumption of the hybrid vehicle air conditioner.

[0041] See also Figure 2 , is a power control method provided in another embodiment of the present application, the method comprising:

[0042] S210: In response to a heating operation request applied to a vehicle, an operating condition of the vehicle is obtained.

[0043] The specific implementation of S210 may refer to the related description of S110 in the aforementioned embodiment, which will not be repeated here.

[0044] S220: If the operating condition is a hybrid operating condition, the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle are obtained.

[0045] The specific implementation of S220 may refer to the relevant description of S120 in the aforementioned embodiment, which will not be repeated here.

[0046] S230: Obtaining the heating intensity of the engine.

[0047] In the implementation manner of the present application, when the vehicle has a heating demand, the user can adjust the heating intensity of the engine according to the vehicle use demand. Specifically, the heating intensity of the engine can be adjusted according to the fuel consumption demand or the endurance demand.

[0048] Among them, the heating intensity can affect the minimum heating amount threshold for engine intervention heating and the heating amount ratio of the engine. A weaker heating intensity can only assist the PTC electric heater in heating in colder weather; while a stronger heating intensity will become the main heat source, in which case the PTC electric heater plays an auxiliary heating role. A weaker heating intensity can provide lower fuel consumption, while a stronger heating intensity will increase the vehicle's endurance. The following Table 1 shows an example of the impact of the heating intensity provided in an embodiment of the present application on the minimum heating amount threshold for engine intervention heating, as well as on parameters such as the heating amount ratio of the engine:

[0049] Table 1 Effect of engine heating intensity on vehicle operation

[0050] Engine heating intensity powerful middle weak Engine heating ratio 100％ 70％ 30％ Minimum heating quantity when engine starts 2000W 3000W 4000W Fuel consumption high middle Low Range long middle short

[0051] It can be seen from Table 1 that the greater the engine heating intensity, the greater the corresponding engine heating amount ratio, the greater the engine heating intensity, the lower the corresponding engine start minimum heating amount, the greater the engine heating intensity, the higher the corresponding fuel consumption, and the greater the engine heating intensity, the longer the corresponding cruising range; the smaller the engine heating intensity, the smaller the corresponding engine heating amount ratio, the smaller the engine heating intensity, the higher the corresponding engine start minimum heating amount, and the smaller the engine heating intensity, the shorter the corresponding cruising range.

[0052] As an implementation mode, the heating intensity of the engine can be obtained according to the setting state of the mechanical function button or the virtual function button described in the above embodiment. Optionally, the heating intensity can also be differentiated in the form of gears, for example, the higher the gear, the stronger the corresponding heating intensity can be, and the lower the gear, the weaker the corresponding heating intensity can be.

[0053] S240: Based on the engine water temperature, the heater box water temperature, the target heating temperature and the heating intensity, a first target power corresponding to the PTC electric heater is obtained; and based on the engine water temperature, the heater box water temperature, the target heating temperature, the reference operating power and the heating intensity, a second target power corresponding to the engine is obtained. The greater the heating intensity, the greater the proportion of engine heating.

[0054] When the heating intensity of the engine is obtained, the first target power and the second target power can be determined in combination with the engine heating intensity set by the user. Specifically, the first target power corresponding to the PTC electric heater can be obtained based on the engine water temperature, the heater box water temperature, the target heating temperature and the heating intensity; and the second target power corresponding to the engine can be obtained based on the engine water temperature, the heater box water temperature, the target heating temperature, the reference operating power and the heating intensity.

[0055] Among them, the acquisition principle and implementation process of the first target power and the second target power can refer to the relevant description in the above-mentioned embodiment, which will not be repeated here.

[0056] S250: Control the PTC electric heater to operate at the first target power, and control the engine to operate at the second target power.

[0057] The specific implementation of S250 may refer to the relevant description of S140 in the aforementioned embodiment, which will not be repeated here.

[0058] In order to provide more uniform heat when heating the occupants through the engine and the PTC electric heater, after controlling the PTC electric heater to operate at a first target power and controlling the engine to operate at a second target power, if the engine water temperature is greater than or equal to the engine target water temperature, the engine water circuit and the heater box water circuit can be controlled to be connected in series, wherein the engine water circuit and the heater box water circuit can be operated independently and can be operated in series by switching the water valve; and if the engine water temperature is lower than the engine target water temperature, the engine water circuit and the heater box water circuit can be controlled to be disconnected.

[0059] Among them, when the engine water circuit and the heater box water circuit are connected in series, in order to reduce the consumption of vehicle electric energy by the PTC electric heater for heating, the operating power of the PTC electric heater can be controlled to be reduced as the engine water temperature rises.

[0060] In a specific application scenario, see Figure 3 , which shows a communication architecture diagram of a vehicle controller provided in an embodiment of the present application, please refer to Figure 4 , shows a topological diagram of the air conditioning cooling system of a hybrid vehicle provided in an embodiment of the present application. Figure 3 As shown, when the human-machine interaction node (HMI) receives a request for a heating operation acting on the vehicle, it can notify the air conditioning controller (HVAC) through the communication network, and at the same time, the hybrid control unit (HCU) will send a signal to the HVAC through the network to indicate whether the engine can be turned on and the maximum power signal at which the engine can be turned on. The HVAC can calculate the amount of heating required by the user based on the user's setting on the air conditioning panel, and calculate the target PTC start-up power (i.e., the first target power) and send it to the PTC electric heater, as well as the target engine start-up power (i.e., the second target power) and send it to the HCU. During the process of the engine water temperature rising, the HVAC can Figure 4 The logic shown controls the four-way valve 104. If the engine water temperature meets the requirements for heating the passenger compartment, the control 104 connects the engine water circuit and the heater core water circuit in series. Otherwise, the two circuits are disconnected. When the engine water temperature rises, the three-way valve 102 can be controlled to keep the engine water circuit and the radiator 108 disconnected.

[0061] A power control method provided in this embodiment obtains the operating condition of the vehicle by responding to a heating operation request acting on the vehicle; if the operating condition is a hybrid operating condition, obtains the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine; obtains the heating intensity of the engine; obtains a first target power corresponding to the PTC electric heater based on the engine water temperature, heater box water temperature, target heating temperature and the heating intensity; and obtains a second target power corresponding to the engine based on the engine water temperature, heater box water temperature, target heating temperature, the reference operating power and the heating intensity, the greater the heating intensity, the greater the proportion of engine heating; controls the PTC electric heater to operate at the first target power, and controls the engine to operate at the second target power. When the vehicle has a heating demand, the method can actively call on the engine to generate waste heat and control the operating power of the engine and the PTC electric heater, so that the vehicle in hybrid working condition can use the engine waste heat for heating for a longer time and to a greater extent, avoiding the PTC electric heater occupying a large amount of electricity in winter and affecting the vehicle's cruising range, thereby effectively reducing the air-conditioning energy consumption of the hybrid vehicle.

[0062] By adjusting the engine's heating intensity according to fuel consumption requirements or endurance requirements, air conditioning control can be made more flexible and the user experience can be improved.

[0063] See also Figure 5 , is a power control method provided in another embodiment of the present application, the method comprising:

[0064] S310: In response to a heating operation request applied to a vehicle, an operating condition of the vehicle is obtained.

[0065] The specific implementation of S310 may refer to the related description of S110 in the aforementioned embodiment, which will not be repeated here.

[0066] S321: If the operating condition is a hybrid operating condition, the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle are obtained.

[0067] The specific implementation of S321 may refer to the relevant description of S120 in the aforementioned embodiment, which will not be repeated here.

[0068] S322: If the operating condition is a pure electric operating condition, obtain the heater box water temperature and the target heating temperature of the vehicle.

[0069] In the implementation manner of the present application, if the engine of the vehicle cannot be started, it can be determined that the vehicle is currently in a pure electric operating state. In this case, the PTC electric heater alone is required to provide heating for the vehicle occupants.

[0070] As an implementation method, if the operating condition is a pure electric operating condition, the vehicle's heater box water temperature and target heating temperature can be obtained, where the heater box water temperature represents the current water temperature of the heater box of the PTC electric heater, and the target heating temperature represents the heating temperature required or set by the user (passenger).

[0071] S331: Based on the engine water temperature, the heater box water temperature and the target heating temperature, a first target power corresponding to the PTC electric heater is obtained, and based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power, a second target power corresponding to the engine is obtained.

[0072] The specific implementation of S331 may refer to the relevant descriptions of S130, S230 and S240 in the aforementioned embodiments, which will not be repeated here.

[0073] S332: Obtaining a third target power corresponding to the PTC electric heater according to the water temperature of the heater box and the target heating temperature.

[0074] As an implementation method, the third target power corresponding to the PTC electric heater can be obtained according to the heater body water temperature and the target heating temperature. Specifically, the target air outlet temperature can be first obtained based on the target heating temperature, the internal and external temperatures of the vehicle, and the light intensity; then the heater body target water temperature can be obtained based on the target air outlet temperature and the heater body water temperature; and then the third target power corresponding to the PTC electric heater can be obtained based on the heater body water temperature and the heater body target water temperature.

[0075] Optionally, the third target power and the first target power are the operating powers corresponding to the PTC electric heater in the two heating modes respectively, and the values ​​of the third target power and the first target power may be different.

[0076] S341: Control the PTC electric heater to operate at the first target power, and control the engine to operate at the second target power.

[0077] The specific implementation of S341 may refer to the related descriptions of S140 and S250 in the aforementioned embodiments, which will not be repeated here.

[0078] S342: Control the PTC electric heater to operate at the third target power.

[0079] Under pure electric operating conditions, the PTC electric heater can be directly controlled to operate at the third target power to quickly meet the user's heating needs.

[0080] This embodiment provides a power control method, which obtains the working condition of the vehicle by responding to a heating operation request acting on the vehicle; different working conditions correspond to different heating modes. If the working condition is a hybrid working condition, the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine are obtained; based on the engine water temperature, heater box water temperature and target heating temperature, a first target power corresponding to the PTC electric heater is obtained, and based on the engine water temperature, heater box water temperature, target heating temperature and reference operating power, a second target power corresponding to the engine is obtained; the PTC electric heater is controlled to operate at the first target power, and the engine is controlled to operate at the second target power. If the working condition is a pure electric working condition, the heater box water temperature and target heating temperature of the vehicle are obtained; according to the heater box water temperature and target heating temperature, a third target power corresponding to the PTC electric heater is obtained; and the PTC electric heater is controlled to operate at the third target power. When the vehicle has a heating demand, the method can actively call on the engine to generate waste heat and control the operating power of the engine and the PTC electric heater, so that the vehicle in hybrid working condition can use the engine waste heat for heating for a longer time and to a greater extent, avoiding the PTC electric heater occupying a large amount of electricity in winter and affecting the vehicle's cruising range, thereby effectively reducing the air-conditioning energy consumption of the hybrid vehicle.

[0081] By obtaining the working condition of the vehicle, it is possible to provide targeted heating to the vehicle occupants, avoiding excessive waste of vehicle electricity and affecting the vehicle's endurance.

[0082] See also Figure 6 The present application provides a power control device 400, the device 400 comprising:

[0083] The operating condition determination module 410 is used to obtain the operating condition of the vehicle in response to a heating operation request applied to the vehicle.

[0084] The air conditioning operation data acquisition module 420 is used to obtain the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle if the operating condition is a hybrid operating condition.

[0085] The air conditioning control parameter acquisition module 430 is used to obtain the first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature and the target heating temperature, and to obtain the second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power.

[0086] As an embodiment, the air conditioning control parameter acquisition module 430 can be used to obtain the target air outlet temperature based on the target heating temperature, the internal and external temperatures of the vehicle, and the light intensity; obtain the engine target water temperature and the heater cabinet target water temperature based on the target air outlet temperature, the engine water temperature, and the heater cabinet water temperature; and obtain the first target power corresponding to the PTC electric heater based on the heater cabinet water temperature and the heater cabinet target water temperature.

[0087] Similarly, the air conditioning control parameter acquisition module 430 may also be used to acquire a second target power corresponding to the engine based on the engine target water temperature, the heater housing target water temperature, and the reference operating power of the engine.

[0088] Optionally, the air conditioning control parameter acquisition module 430 can also be used to obtain the heating intensity of the engine before obtaining the first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature and the target heating temperature, and obtaining the second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power. In this way, the first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature and the target heating temperature, and the second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power can include: obtaining the first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature, the target heating temperature and the heating intensity; and obtaining the second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature, the reference operating power and the heating intensity. The greater the heating intensity, the greater the proportion of engine heating.

[0089] The air conditioning control module 440 is used to control the PTC electric heater to operate at the first target power, and to control the engine to operate at the second target power.

[0090] As an embodiment, the air conditioning control module 440 can also be used to control the engine water circuit to be connected in series with the heater box water circuit if the engine water temperature is greater than or equal to the engine target water temperature after controlling the PTC electric heater to operate at the first target power and controlling the engine to operate at the second target power; if the engine water temperature is lower than the engine target water temperature, control the engine water circuit to be disconnected from the heater box water circuit.

[0091] The air conditioning control module 440 may also be used to control the reduction of the operating power of the PTC electric heater when the engine water circuit and the heater housing water circuit are connected in series.

[0092] Optionally, if the operating condition is a pure electric operating condition, the air conditioning operation data acquisition module 420 can be used to obtain the heater cabinet water temperature and the target heating temperature of the vehicle. In this way, the air conditioning control parameter acquisition module 430 can be used to obtain the third target power corresponding to the PTC electric heater according to the heater cabinet water temperature and the target heating temperature. Then the air conditioning control module 440 can be used to control the PTC electric heater to operate at the third target power.

[0093] When the operating condition is a pure electric operating condition, obtaining the third target power corresponding to the PTC electric heater based on the heater box water temperature and the target heating temperature may include: obtaining the target air outlet temperature based on the target heating temperature, the internal and external temperatures of the vehicle, and the light intensity; obtaining the heater box target water temperature based on the target air outlet temperature and the heater box water temperature; obtaining the third target power corresponding to the PTC electric heater based on the heater box water temperature and the heater box target water temperature.

[0094] The following will be combined Figure 7 A vehicle provided in the present application is described.

[0095] See also Figure 7 Based on the above power control method and device, the embodiment of the present application also provides another vehicle 100 that can execute the above power control method. The vehicle 100 includes one or more (only one is shown in the figure) processors 102, a memory 104, and a data acquisition module 106 that are coupled to each other. The memory 104 stores a program that can execute the content of the above embodiment, and the processor 102 can execute the program stored in the memory 104.

[0096] Among them, the processor 102 may include one or more processing cores. The processor 102 uses various interfaces and lines to connect various parts in the entire vehicle 100, and executes various functions and processes data of the vehicle 100 by running or executing instructions, programs, code sets or instruction sets stored in the memory 104, and calling data stored in the memory 104. Optionally, the processor 102 can be implemented in at least one hardware form of a network processor (Neural network Processing Unit, NPU), a digital signal processing (Digital Signal Processing, DSP), a field programmable gate array (Field-Programmable Gate Array, FPGA), and a programmable logic array (Programmable Logic Array, PLA). The processor 102 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processor (Graphics Processing Unit, GPU), a network processor (Neural network Processing Unit, NPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing display content; the NPU is responsible for processing multimedia data such as video and images; and the modem is used to process wireless communications. It is understandable that the above-mentioned modem may not be integrated into the processor 102, but may be implemented separately through a communication chip.

[0097] The memory 104 may include a random access memory (RAM) or a read-only memory (ROM). The memory 104 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 104 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the following various method embodiments, etc. The data storage area may also store data created by the vehicle 100 during use (such as a phone book, audio and video data, chat record data), etc.

[0098] The data acquisition module 106 can be used to obtain the driving status information of the vehicle 100. The data acquisition module 106 can be a laser radar, a camera, a sensor, a GPS (Global Positioning System) navigation, etc.

[0099] An embodiment of the present application provides a computer-readable storage medium in which a program code is stored, and the program code can be called by a processor to execute the method described in the above method embodiment.

[0100] The computer readable storage medium may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer readable storage medium includes a non-transitory computer-readable storage medium. The computer readable storage medium has storage space for program codes that execute any of the method steps in the above method. These program codes can be read from or written to one or more computer program products. The program code can be compressed, for example, in an appropriate form.

[0101] In summary, the present application provides a power control method, device and vehicle, which obtain the working condition of the vehicle by responding to the heating operation request acting on the vehicle; if the working condition is a hybrid working condition, obtain the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine; obtain the first target power corresponding to the PTC electric heater based on the engine water temperature, heater box water temperature and target heating temperature, and obtain the second target power corresponding to the engine based on the engine water temperature, heater box water temperature, target heating temperature and reference operating power; control the PTC electric heater to operate at the first target power, and control the engine to operate at the second target power. When the vehicle has a heating demand, this method can actively call on the engine to generate waste heat, and control the operating power of the engine and the PTC electric heater, so that the vehicle in the hybrid working condition can use the engine waste heat for heating for a longer time and to a greater extent, avoiding the PTC electric heater occupying a large amount of electricity in winter and affecting the vehicle's cruising range, thereby effectively reducing the energy consumption of hybrid vehicle air conditioning.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power control method, characterized in that: The method comprises: In response to a heating operation request applied to the vehicle, obtaining an operating condition of the vehicle; If the operating condition is a hybrid operating condition, obtaining the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle; Acquire a first target power corresponding to the PTC electric heater based on the engine water temperature, the heater housing water temperature and the target heating temperature, and acquire a second target power corresponding to the engine based on the engine water temperature, the heater housing water temperature, the target heating temperature and the reference operating power; The PTC electric heater is controlled to operate at the first target power, and the engine is controlled to operate at the second target power.

2. The method according to claim 1, characterized in that The method of obtaining a first target power corresponding to the PTC electric heater based on the engine water temperature, the heater housing water temperature and the target heating temperature includes: Obtaining a target air outlet temperature based on the target heating temperature, the internal and external temperatures of the vehicle, and the light intensity; Acquire the target engine water temperature and the target heater box water temperature based on the target air outlet temperature, the engine water temperature and the heater box water temperature; Acquire a first target power corresponding to the PTC electric heater based on the heater box water temperature and the heater box target water temperature; The obtaining of a second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power includes: A second target power corresponding to the engine is acquired based on the engine target water temperature, the heater housing target water temperature, and the reference operating power of the engine.

3. The method according to claim 2, characterized in that After controlling the PTC electric heater to operate at the first target power and controlling the engine to operate at the second target power, the method further includes: If the engine water temperature is greater than or equal to the engine target water temperature, controlling the engine water circuit to be connected in series with the heater housing water circuit; If the engine water temperature is lower than the target engine water temperature, the engine water circuit is controlled to be disconnected from the heater housing water circuit.

4. The method according to claim 3, characterized in that The method further comprises: When the engine water circuit is connected in series with the heater housing water circuit, the operating power of the PTC electric heater is controlled to be reduced.

5. The method according to any one of claims 1 to 4, characterized in that: Before acquiring the first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature and the target heating temperature, and acquiring the second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power, the method further includes: obtaining the heating intensity of the engine; The method of acquiring a first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature and the target heating temperature, and acquiring a second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power, comprises: Acquire a first target power corresponding to the PTC electric heater based on the engine water temperature, the heater housing water temperature, the target heating temperature and the heating intensity; And based on the engine water temperature, the heater box water temperature, the target heating temperature, the reference operating power and the heating intensity, a second target power corresponding to the engine is obtained. The greater the heating intensity, the greater the proportion of engine heating.

6. The method according to claim 1, characterized in that The method further comprises: If the operating condition is a pure electric operating condition, obtaining a heater box water temperature and a target heating temperature of the vehicle; Obtaining a third target power corresponding to the PTC electric heater according to the water temperature of the heater box and the target heating temperature; The PTC electric heater is controlled to operate at the third target power.

7. The method according to claim 6, characterized in that The obtaining of a third target power corresponding to the PTC electric heater according to the water temperature of the heater box and the target heating temperature includes: Obtaining a target air outlet temperature based on the target heating temperature, the internal and external temperatures of the vehicle, and the light intensity; Obtaining a target water temperature of the heater box based on the target air outlet temperature and the water temperature of the heater box; A third target power corresponding to the PTC electric heater is acquired based on the heater housing water temperature and the heater housing target water temperature.

8. A power control device, characterized in that: The device comprises: an operating condition determination module, for obtaining an operating condition of the vehicle in response to a heating operation request acting on the vehicle; An air conditioning operation data acquisition module, for acquiring the engine water temperature, heater box water temperature, target heating temperature and reference operating power of the engine of the vehicle if the operating condition is a hybrid operating condition; an air conditioning control parameter acquisition module, configured to acquire a first target power corresponding to the PTC electric heater based on the engine water temperature, the heater box water temperature and the target heating temperature, and to acquire a second target power corresponding to the engine based on the engine water temperature, the heater box water temperature, the target heating temperature and the reference operating power; An air conditioning control module is used to control the PTC electric heater to operate at the first target power, and to control the engine to operate at the second target power.

9. A vehicle, characterized in that: comprising one or more processors and memory; One or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores program codes, wherein when the program codes are executed by a processor, the method according to any one of claims 1 to 7 is executed.

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