A heating method and device for a hybrid vehicle

Abstract

This disclosure relates to the field of hybrid vehicle control technology, and particularly to a heating method and device for hybrid vehicles. Based on the vehicle's operating conditions and heating range, the target outlet temperature of the WPTC water heater is determined, and water circulation is used for heating. The difference between the target outlet temperature and the actual temperature of the WPTC is calculated. Based on the difference, the required power is calculated. Based on a first mapping relationship, the WPTC duty cycle is obtained according to the required power. Heating is performed by adjusting the WPTC duty cycle using PID control.

Description

Technical Field

[0001] This disclosure relates to the field of hybrid vehicle control technology, and in particular to a heating method and device for a hybrid vehicle. Background Technology

[0002] For plug-in hybrid electric vehicles (PHEVs), the heating and battery heating systems are more complex. The heating and air conditioning systems of hybrid vehicles need to be adapted to different scenarios, especially the utilization of engine waste heat when the engine is running and the heating of the passenger compartment when the engine is not running.

[0003] Existing technologies in hybrid electric vehicles (HEVs) or electric vehicles (EVs) urgently require a control method to address heating needs in different scenarios. Summary of the Invention

[0004] To address the aforementioned issues, this disclosure provides a heating method and device for hybrid vehicles, aiming to maximize the utilization of engine waste heat in PHEV vehicles and resolve the series-parallel coupling relationship between WPTC as a heat source and engine waste heat as a heat source.

[0005] In a first aspect, a heating method for a hybrid vehicle, the method comprising:

[0006] Based on the vehicle's operating conditions and heating range, the target outlet temperature of the WPTC water heater is determined, and water circulation is used for heating.

[0007] Calculate the difference between the target outlet temperature and the actual temperature of the WPTC.

[0008] The required power is calculated based on the difference.

[0009] Based on the first mapping relationship, the WPTC duty cycle is obtained according to the required power.

[0010] Heating is achieved by adjusting the duty cycle of the WPTC using a PID controller.

[0011] The first mapping relationship is used to characterize the correspondence between demand power and WPTC duty cycle; the first mapping relationship is a spreadsheet containing the correspondence between demand power and WPTC duty cycle; based on the demand power, the corresponding WPTC duty cycle is determined by looking up the spreadsheet and / or by interpolation.

[0012] The operating conditions include pure electric vehicle (EV) and hybrid electric vehicle (HEV) operating conditions, and the heating range includes single passenger compartment heating, single battery circuit heating, and simultaneous heating of passenger compartment and battery circuit.

[0013] In the water circulation, the engine is connected in sequence to the air conditioning and heating water pump, the WPTC water heater and the heater core, and the heater core is connected to the engine to form a circulation.

[0014] Furthermore, based on the vehicle's operating conditions and heating range, the target outlet temperature of the WPTC water heater is determined, including:

[0015] When the vehicle is in EV mode and the passenger compartment is heated, the target outlet temperature of WPTC is determined according to the passenger compartment temperature requirements.

[0016] Furthermore, based on the vehicle's operating conditions and heating range, the target outlet temperature of the WPTC water heater is determined, including:

[0017] When the vehicle is in EV mode and the passenger compartment and battery circuit are heated simultaneously, the first target outlet temperature of WPTC is determined according to the temperature requirement of the passenger compartment; the second target outlet temperature of WPTC is determined according to the temperature requirement of the battery circuit.

[0018] The target outlet temperature of WPTC is determined based on the larger of the first target outlet temperature and the second target outlet temperature.

[0019] Furthermore, based on the vehicle's operating conditions and heating range, the target outlet temperature of the WPTC water heater is determined, including:

[0020] When the vehicle is in HEV mode, and the passenger compartment or battery circuit is heated, the engine coolant temperature is determined.

[0021] When the engine coolant temperature is lower than the first engine coolant temperature threshold or the engine coolant temperature sensor has a fault code, the WPTC inlet temperature judgment is performed.

[0022] When the WPTC inlet water temperature is higher than the target water temperature required for crew compartment heating, the engine water temperature will be re-evaluated.

[0023] When the WPTC inlet water temperature is less than the target water temperature required for crew compartment heating by -5 degrees, the target outlet water temperature of the WPTC is determined according to the temperature requirements of the crew compartment or battery circuit.

[0024] Furthermore, when the vehicle is in HEV mode and the passenger compartment is heated, if the engine coolant temperature is greater than the second engine coolant temperature threshold and the engine coolant temperature sensor has no fault code, the WPTC is turned off and the water circulation loop is switched to engine intervention. The engine's waste heat is used to determine the mixing damper opening by looking up the table based on the intake air temperature, PTC outlet water temperature and target outlet air temperature.

[0025] Furthermore, when the vehicle is in HEV mode and the battery circuit is heated, if the engine coolant temperature is greater than the second engine coolant temperature threshold and the engine coolant temperature sensor has no fault code, WPTC is turned off and the water circulation circuit intervened by the engine is switched. When the battery water temperature is greater than the target temperature required for battery heating + 5 degrees, the two-way water valve switching angle of the battery and passenger compartment water circulation circuits is switched to increase the flow rate of the passenger compartment water circulation circuit.

[0026] Furthermore, based on the second mapping relationship, the first WPTC power limit is obtained according to the air volume level;

[0027] Based on the third mapping relationship, the second WPTC power limit is obtained according to the ambient external temperature;

[0028] The smaller of the first WPTC power limit and the second WPTC power limit is used to limit the WPTC power.

[0029] The second mapping relationship is used to characterize the correspondence between the airflow level and the first WPTC power limit; the second mapping relationship is a spreadsheet that records the correspondence between the airflow level and the first WPTC power limit; based on the airflow level, the corresponding first WPTC power limit is determined by looking up the spreadsheet and / or by interpolation.

[0030] The third mapping relationship is used to characterize the correspondence between ambient temperature and the second WPTC power limit; the third mapping relationship is a spreadsheet containing the correspondence between ambient temperature and the second WPTC power limit; based on the ambient temperature, the corresponding second WPTC power limit is determined by looking up the spreadsheet and / or by interpolation.

[0031] Secondly, a heating system for a hybrid vehicle includes: a temperature determining unit, a duty cycle determining unit, and a heating unit;

[0032] The temperature determination unit is used to determine the target outlet temperature of the WPTC water heater based on the vehicle's operating conditions and heating range, and to use water circulation for heating.

[0033] The temperature determination unit is also used to calculate the difference between the target outlet temperature of the WPTC and the actual temperature.

[0034] The duty cycle determination unit is used to calculate the required power based on the difference.

[0035] The duty cycle determination unit is also used to obtain the WPTC duty cycle based on the first mapping relationship and the required power.

[0036] The heating unit is used to adjust the duty cycle of the WPTC via PID control for heating.

[0037] The first mapping relationship is used to characterize the correspondence between demand power and WPTC duty cycle; the first mapping relationship is a spreadsheet containing the correspondence between demand power and WPTC duty cycle; based on the demand power, the corresponding WPTC duty cycle is determined by looking up the spreadsheet and / or by interpolation.

[0038] In the water circulation, the engine is connected in sequence to the air conditioning and heating water pump, the WPTC water heater and the heater core, and the heater core is connected to the engine to form a circulation.

[0039] Thirdly, an electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0040] Memory, which stores computer programs;

[0041] When a processor executes a computer program stored in memory, it implements the heating method of a hybrid vehicle described above.

[0042] Fourthly, a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described heating method for a hybrid vehicle.

[0043] This disclosure includes at least the following beneficial effects:

[0044] 1. Solve the problem of utilizing engine waste heat;

[0045] 2. Solve the coupling relationship between engine waste heat and WPTC dual heat sources;

[0046] 3. This invention fully guarantees the energy-saving effect of PHEV models, reduces energy consumption, and increases driving range, etc.

[0047] Other features and advantages of this disclosure will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the disclosure. The objects and other advantages of this disclosure may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the heating method disclosed in this publication;

[0050] Figure 2 A schematic diagram of the heating process for a single passenger compartment in EV operating conditions;

[0051] Figure 3 A schematic diagram of the simultaneous heating process for the passenger compartment and battery circuit in EV operating conditions.

[0052] Figure 4 A schematic diagram of the heating process for a single passenger compartment in HEV operating conditions;

[0053] Figure 5 A schematic diagram of the heating process of a single battery circuit in HEV operating conditions;

[0054] Figure 6 A schematic diagram of the simultaneous heating process for the passenger compartment and battery circuit in HEV operating conditions.

[0055] Figure 7 This is a schematic diagram of the heating device structure disclosed herein;

[0056] Figure 8 This is a schematic diagram of the electronic device structure. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0058] like Figure 1 As shown, a heating method for a hybrid vehicle includes:

[0059] S101, based on the vehicle's operating conditions and heating range, determines the target outlet temperature of the WPTC water heater and uses water circulation for heating;

[0060] S102, Calculate the difference between the target outlet temperature and the actual temperature of WPTC;

[0061] S103, the required power is calculated based on the difference;

[0062] S104, based on the first mapping relationship, obtain the WPTC duty cycle according to the required power;

[0063] S105 uses PID control to adjust the duty cycle of WPTC for heating;

[0064] The first mapping relationship is used to characterize the correspondence between demand power and WPTC duty cycle; the first mapping relationship is a spreadsheet containing the correspondence between demand power and WPTC duty cycle; based on the demand power, the corresponding WPTC duty cycle is determined by looking up the spreadsheet and / or by interpolation.

[0065] The operating conditions include pure electric vehicle (EV) and hybrid electric vehicle (HEV) operating conditions, and the heating range includes single passenger compartment heating, single battery circuit heating, and simultaneous heating of passenger compartment and battery circuit.

[0066] In the water circulation, the engine is connected in sequence to the air conditioning and heating water pump, the WPTC water heater and the heater core, and the heater core is connected to the engine to form a circulation.

[0067] In practice, the first mapping relationship is determined experimentally and adjusted according to the actual conditions of the vehicle body. The WPTC power is controlled via PID control based on the difference between the target outlet temperature and the actual temperature. When WPTC heating alone cannot meet the target water temperature requirement, the engine is started, utilizing both engine and WPTC heating.

[0068] In one embodiment, determining the target outlet temperature of the WPTC water heater based on the vehicle's operating conditions and heating range includes:

[0069] When the vehicle is in EV mode and the passenger compartment is heated, the target outlet temperature of WPTC is determined according to the passenger compartment temperature requirements.

[0070] In practical implementation, under EV operating conditions, the heating of a single passenger compartment is as follows: Figure 2 .

[0071] In one embodiment, determining the target outlet temperature of the WPTC water heater based on the vehicle's operating conditions and heating range includes:

[0072] When the vehicle is in EV mode and the passenger compartment and battery circuit are heated simultaneously, the first target outlet temperature of WPTC is determined according to the temperature requirement of the passenger compartment; the second target outlet temperature of WPTC is determined according to the temperature requirement of the battery circuit.

[0073] The target outlet temperature of WPTC is determined based on the larger of the first target outlet temperature and the second target outlet temperature.

[0074] In practical implementation, under EV operating conditions, the passenger compartment and battery circuit simultaneously generate heat (see [reference]). Figure 3 .

[0075] Calculate WptcPower1 based on the temperature difference between the target outlet temperature and the actual temperature dWptcPower; calculate WptcPower2 based on the temperature difference between the target battery inlet temperature and the actual temperature dBatTemp; and take the maximum value of the two, MAX(WptcPower1, WptcPower2).

[0076] In one embodiment, determining the target outlet temperature of the WPTC water heater based on the vehicle's operating conditions and heating range includes:

[0077] When the vehicle is in HEV mode, and the passenger compartment or battery circuit is heated, the engine coolant temperature is determined.

[0078] When the engine coolant temperature is lower than the first engine coolant temperature threshold or the engine coolant temperature sensor has a fault code, the WPTC inlet temperature judgment is performed.

[0079] When the WPTC inlet water temperature is higher than the target water temperature required for crew compartment heating, the engine water temperature will be re-evaluated.

[0080] When the WPTC inlet water temperature is less than the target water temperature required for crew compartment heating by -5 degrees, the target outlet water temperature of the WPTC is determined according to the temperature requirements of the crew compartment or battery circuit.

[0081] In practical implementation, under HEV operating conditions, the heating of a single-occupant cabin should refer to [reference needed]. Figure 4 For single-cell circuit heating, please refer to [link / reference]. Figure 5 .

[0082] Simultaneous heating of the crew compartment and battery circuit (see) Figure 6 When the vehicle is in HEV mode, with the passenger compartment and battery circuit heated simultaneously, engine coolant temperature is determined. When the engine coolant temperature is lower than the first engine coolant temperature threshold or the engine coolant temperature sensor has a fault code, the WPTC inlet temperature is determined. When the WPTC inlet temperature is higher than the target coolant temperature, the engine coolant temperature is determined again. When the WPTC inlet temperature is lower than the target coolant temperature by 5 degrees, the target WPTC outlet temperature is determined based on the greater of the passenger compartment and battery circuit temperature requirements.

[0083] The first engine coolant temperature threshold and the second engine coolant temperature threshold are set according to actual conditions, wherein the first engine coolant temperature threshold is lower than the second engine coolant temperature threshold. In this embodiment, the first engine coolant temperature threshold and the second engine coolant temperature threshold differ by 5 degrees, the first engine coolant temperature threshold is 72 degrees, and the second engine coolant temperature threshold is 77 degrees.

[0084] In one embodiment, when the vehicle is in HEV mode and the passenger compartment is heated, when the engine coolant temperature is greater than the second engine coolant temperature threshold and the engine coolant temperature sensor has no fault code, the WPTC is turned off and the water circulation loop intervened by the engine is switched on. The mixed air damper opening is obtained by looking up a table based on the intake air temperature, PTC outlet water temperature and target outlet air temperature using the waste heat of the engine.

[0085] In practice, if the engine coolant temperature fails, switch to small circulation mode.

[0086] In one embodiment, when the vehicle is in HEV mode and the battery circuit is heated, when the engine coolant temperature is greater than the second engine coolant temperature threshold and the engine coolant temperature sensor has no fault code, the WPTC is turned off and the water circulation circuit intervened by the engine is switched. When the battery water temperature is greater than the target temperature required for battery heating + 5 degrees, the two-way water valve switching angle of the battery and passenger compartment water circulation circuits is switched to increase the flow rate of the passenger compartment water circulation circuit.

[0087] In one embodiment, the first WPTC power limit is obtained based on the second mapping relationship and the airflow level.

[0088] Based on the third mapping relationship, the second WPTC power limit is obtained according to the ambient external temperature;

[0089] The smaller of the first WPTC power limit and the second WPTC power limit is used to limit the WPTC power.

[0090] The second mapping relationship is used to characterize the correspondence between the airflow level and the first WPTC power limit; the second mapping relationship is a spreadsheet that records the correspondence between the airflow level and the first WPTC power limit; based on the airflow level, the corresponding first WPTC power limit is determined by looking up the spreadsheet and / or by interpolation.

[0091] The third mapping relationship is used to characterize the correspondence between ambient temperature and the second WPTC power limit; the third mapping relationship is a spreadsheet containing the correspondence between ambient temperature and the second WPTC power limit; based on the ambient temperature, the corresponding second WPTC power limit is determined by looking up the spreadsheet and / or by interpolation.

[0092] In specific implementation, the second mapping relationship is shown in Table 1 and should be set according to the actual situation;

[0093] Table 1

[0094]

[0095] The third mapping relationship is shown in Table 2 and should be set according to the actual situation.

[0096] Table 2

[0097]

[0098] like Figure 7 As shown, a heating system for a hybrid vehicle includes: a temperature determination unit 701, a duty cycle determination unit 702, and a heating unit 703;

[0099] Temperature determination unit 701 is used to determine the target outlet temperature of the WPTC water heater based on the vehicle's operating conditions and heating range, and to use water circulation for heating.

[0100] The temperature determination unit 701 is also used to calculate the difference between the target outlet temperature of the WPTC and the actual temperature.

[0101] The duty cycle determination unit 702 is used to calculate the required power based on the difference.

[0102] The duty cycle determination unit 702 is also used to obtain the WPTC duty cycle based on the first mapping relationship and the required power.

[0103] Heating unit 703 is used for heating by adjusting the duty cycle of WPTC via PID control;

[0104] The first mapping relationship is used to characterize the correspondence between demand power and WPTC duty cycle; the first mapping relationship is a spreadsheet containing the correspondence between demand power and WPTC duty cycle; based on the demand power, the corresponding WPTC duty cycle is determined by looking up the spreadsheet and / or by interpolation.

[0105] In the water circulation, the engine is connected in sequence to the air conditioning and heating water pump, the WPTC water heater and the heater core, and the heater core is connected to the engine to form a circulation.

[0106] like Figure 8 As shown, this disclosure provides an electronic device, including a processor 801, a communication interface 802, a memory 803, and a communication bus 804, wherein the processor 801, the communication interface 802, and the memory 803 communicate with each other through the communication bus 804;

[0107] Memory 803 stores computer programs;

[0108] The processor 801 implements the above method when executing a computer program stored in the memory 803.

[0109] This disclosure provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0110] The computer-readable storage medium may be included in the device / apparatus described in the above embodiments; or it may exist independently and not assembled into the device / apparatus. The computer-readable storage medium carries one or more programs that, when executed, implement the method according to the embodiments of this disclosure.

[0111] According to embodiments of this disclosure, the computer-readable storage medium can be a non-volatile computer-readable storage medium, such as including, but not limited to: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this disclosure, the computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0112] Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and such modifications or substitutions 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 disclosure.

Claims

1. A method of heating a hybrid vehicle, characterized by, The method comprises: According to the working condition and heating range of the automobile, the target outlet temperature of the WPTC water heater is determined, and water circulation is used for heating; Calculate the difference between the target outlet temperature of the WPTC and the actual temperature; According to the difference, the required power is calculated; Based on the first mapping relationship, the WPTC duty cycle is obtained according to the required power; Adjust the WPTC duty cycle through PID to heat; Wherein, the first mapping relationship is used to represent the corresponding relationship between the required power and the WPTC duty cycle; The first mapping relationship is an electronic table recording the corresponding relationship between the required power and the WPTC duty cycle; According to the required power, the corresponding WPTC duty cycle is determined by looking up the electronic table and / or interpolation operation; The working condition includes pure electric EV working condition and hybrid HEV working condition, and the heating range includes single passenger cabin heating, single battery loop heating, and passenger cabin and battery loop heating at the same time; In the water circulation, the engine is connected with the air conditioning heating water pump, the WPTC water heater and the heater core in turn, and the heater core is connected with the engine to form a circulation; It also includes: based on the second mapping relationship, the first WPTC power limit is obtained according to the air volume gear; Based on the third mapping relationship, the second WPTC power limit is obtained according to the environment outside temperature; Take the smaller one of the first WPTC power limit and the second WPTC power limit to limit the power of WPTC; Wherein, the second mapping relationship is used to represent the corresponding relationship between the air volume gear and the first WPTC power limit; The second mapping relationship is an electronic table recording the corresponding relationship between the air volume gear and the first WPTC power limit; According to the air volume gear, the corresponding first WPTC power limit is determined by looking up the electronic table and / or interpolation operation; The third mapping relationship is used to represent the corresponding relationship between the environment outside temperature and the second WPTC power limit; The third mapping relationship is an electronic table recording the corresponding relationship between the environment outside temperature and the second WPTC power limit; According to the environment outside temperature, the corresponding second WPTC power limit is determined by looking up the electronic table and / or interpolation operation.

2. The heating method of the hybrid vehicle according to claim 1, wherein According to the working condition and heating range of the automobile, the target outlet temperature of the WPTC water heater is determined, including: When the automobile is in EV working condition and the passenger cabin is heated, the target outlet temperature of the WPTC is determined according to the temperature demand of the passenger cabin.

3. The heating method of the hybrid vehicle according to claim 1, wherein According to the working condition and heating range of the automobile, the target outlet temperature of the WPTC water heater is determined, including: When the automobile is in EV working condition and the passenger cabin and the battery loop are heated at the same time, the first target outlet temperature of the WPTC is determined according to the temperature demand of the passenger cabin; The second target outlet temperature of the WPTC is determined according to the temperature demand of the battery loop; The target outlet temperature of the WPTC is determined according to the larger one of the first target outlet temperature and the second target outlet temperature.

4. The heating method of the hybrid vehicle according to claim 1, wherein According to the working condition and heating range of the automobile, the target outlet water temperature of the WPTC water heater is determined, including: When the automobile is in HEV working condition and the passenger cabin or battery loop is heated, the engine water temperature is judged; When the engine water temperature is lower than the first engine water temperature threshold or the engine water temperature sensor has a fault code, the WPTC inlet water temperature is judged; When the WPTC inlet water temperature is greater than the target water temperature required by the passenger cabin heating, the engine water temperature is re-judged; When the WPTC inlet water temperature is less than the target water temperature required by the passenger cabin heating-5 degrees, the WPTC target outlet water temperature is determined according to the temperature demand of the passenger cabin or the battery loop.

5. The method of claim 1, wherein, Including: When the automobile is in HEV working condition and the passenger cabin is heated, when the engine water temperature is greater than the second engine water temperature threshold and the engine water temperature sensor has no fault code, the WPTC is closed, and the engine intervention water circulation loop is switched to, using the waste heat of the engine, the mixed damper opening degree is obtained by looking up the table according to the inlet air temperature, the PTC outlet water temperature and the target outlet air temperature.

6. The method of claim 1, wherein, Including: When the automobile is in HEV working condition and the battery loop is heated, when the engine water temperature is greater than the second engine water temperature threshold and the engine water temperature sensor has no fault code, the WPTC is closed, and the engine intervention water circulation loop is switched to, when the battery inlet water temperature is greater than the target temperature required by the battery heating+5 degrees, the switching angle of the two-way water valve of the battery and the passenger cabin water circulation loop is switched to increase the flow to the passenger cabin water circulation loop.

7. A heating system for a hybrid vehicle, characterized by Including: The temperature determination unit, the duty cycle determination unit and the heating unit; The temperature determination unit is used for determining the target outlet water temperature of the WPTC water heater according to the working condition and heating range of the automobile, and heating is carried out by water circulation; The temperature determination unit is also used for calculating the difference between the WPTC target outlet water temperature and the actual temperature; The duty cycle determination unit is used for calculating the required power according to the difference; The duty cycle determination unit is also used for obtaining the WPTC duty cycle based on the first mapping relationship according to the required power; The heating unit is used for heating by PID adjusting the WPTC duty cycle; The first mapping relationship is used to represent the corresponding relationship between the required power and the WPTC duty cycle; the first mapping relationship is an electronic table recording the corresponding relationship between the required power and the WPTC duty cycle; according to the required power, the corresponding WPTC duty cycle is determined by looking up the electronic table and / or interpolation operation; In the water circulation, the engine is connected with the air conditioning heating water pump, the WPTC water heater and the heater core in turn, and the heater core is connected with the engine to form a circulation; The duty cycle determination unit is also used for obtaining the first WPTC power limit according to the air volume gear based on the second mapping relationship; obtaining the second WPTC power limit according to the environment outside temperature based on the third mapping relationship; The heating unit is also used for taking the smaller one of the first WPTC power limit and the second WPTC power limit to limit the power of the WPTC; The second mapping relationship is used to represent the corresponding relationship between the air volume level and the first WPTC power limit. The second mapping relationship is an electronic table recording the corresponding relationship between the air volume level and the first WPTC power limit. According to the air volume level, the corresponding first WPTC power limit is determined by searching the electronic table and / or interpolation operation. The third mapping relationship is used to represent the corresponding relationship between the ambient external temperature and the second WPTC power limit. The third mapping relationship is an electronic table recording the corresponding relationship between the ambient external temperature and the second WPTC power limit. According to the ambient external temperature, the corresponding second WPTC power limit is determined by searching the electronic table and / or interpolation operation.

8. An electronic device, comprising: The device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete the communication among each other through the communication bus. The memory stores a computer program. The processor is used to execute the computer program stored on the memory, and realize the heating method of the hybrid vehicle type in any one of claims 1-6.

9. A computer readable storage medium storing a computer program, characterized in that, The computer program is executed by the processor to realize the heating method of the hybrid vehicle type in any one of claims 1-6.

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