Battery pack heating control method for electric vehicles, vehicle controller and electric vehicle

Abstract

This application provides a battery pack heating control method, a vehicle controller, and an electric vehicle. The electric vehicle includes a battery pack, a first motor, an engine, and a heater. The first motor is electrically connected to the battery pack and the heater, and is also connected to the engine. The battery pack heating control method includes: acquiring the temperature of the battery pack; if the temperature is lower than a first temperature threshold, generating a start control signal to control the battery pack to provide starting power to the first motor, causing the first motor to rotate and start the engine; and generating a power generation control signal to control the first motor to generate electricity, supplying power to the heater, causing the heater to heat up and thus heat the battery pack. By controlling the battery pack to provide starting power to the first motor, causing the first motor to rotate and start the engine, and then the engine to start, the first motor can generate electricity, which can heat the battery pack in low-temperature environments, maintaining its normal operating temperature and preventing the vehicle from becoming undrivable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric vehicle control, and in particular to a battery pack heating control method for electric vehicle, a vehicle controller and an electric vehicle. BACKGROUND

[0002] The market of electric vehicle is developing rapidly and is increasingly accepted by users. At present, many electric vehicles adopt hybrid power, which is driven by an engine and a motor, and the motor needs to be powered by a battery pack.

[0003] The battery pack of an electric vehicle needs to be maintained at a certain temperature range to work normally. As the temperature decreases, the internal resistance of the battery pack increases, resulting in a decrease in the output power of the battery pack. The electric vehicle may not be able to run in a low-temperature environment, which brings inconvenience to users. SUMMARY

[0004] The present application provides a battery pack heating control method for an electric vehicle that can adapt to a low-temperature environment, a vehicle controller and an electric vehicle.

[0005] The present application provides a battery pack heating control method for an electric vehicle, which comprises a battery pack, a first motor, an engine and a heater. The first motor is electrically connected to the battery pack and the heater, and the first motor is connected to the engine. The battery pack heating control method comprises:

[0006] obtaining the temperature of the battery pack;

[0007] if the temperature is lower than a first temperature threshold, generating a start control signal to control the battery pack to provide starting power to the first motor, so that the first motor rotates and drives the engine to start; and

[0008] generating a power generation control signal to control the first motor to generate power and supply power to the heater, so that the heater generates heat to heat the battery pack.

[0009] Optionally, the battery pack heating control method further comprises: after the engine starts, generating a power-off control signal to control the battery pack to stop supplying power to the first motor.

[0010] Optionally, the generating of the power generation control signal to control the first motor to generate power comprises:

[0011] determining a target power, the target power comprising a required power required by the heater and a load power required by at least one load electrically connected to the battery pack;

[0012] generating the power generation control signal according to the target power to control the first motor to generate power according to the target power and supply power to the heater and the load.

[0013] Optionally, the generating the power generation control signal according to the target power comprises:

[0014] acquiring an actual current and an actual voltage of the first motor;

[0015] determining a target current according to the target power and the actual voltage;

[0016] if the actual current is less than the target current, generating a power increasing control signal to control the first motor to increase power generation;

[0017] if the actual current is greater than the target current, generating a power decreasing control signal to control the first motor to decrease power generation.

[0018] Optionally, the battery pack heating control method further comprises:

[0019] if the temperature is higher than a second temperature threshold, generating a power generation stopping control signal to control the first motor to stop supplying power to the heater to stop heating the battery pack;

[0020] the second temperature threshold is higher than the first temperature threshold.

[0021] Optionally, the electric vehicle comprises a second motor, a transmission and a wheel, the second motor is connected with the transmission, and the transmission is connected with the wheel.

[0022] the battery pack heating control method comprises:

[0023] generating a driving control signal to control the second motor to drive the transmission to drive the wheel;

[0024] when the driving control signal is generated, if the temperature is lower than a first temperature threshold, the starting control signal is generated, and the power generation control signal is generated.

[0025] Optionally, the battery pack heating control method comprises:

[0026] generating a parking control signal to control the second motor to stop driving the transmission to park;

[0027] after the parking control signal is generated, if the temperature is lower than a first temperature threshold, the starting control signal is generated, and the power generation control signal is generated.

[0028] Optionally, the battery pack heating control method comprises:

[0029] receiving a heating instruction sent by a user mobile device;

[0030] The start control signal and the power generation control signal are generated in response to the heating instruction.

[0031] The application also provides a vehicle controller of an electric vehicle, which is used to execute the battery pack heating control method.

[0032] The application also provides an electric vehicle, which comprises:

[0033] A battery pack;

[0034] A vehicle controller as described above, which is electrically connected to the battery pack;

[0035] A first motor, which is electrically connected to the battery pack and the vehicle controller;

[0036] An engine, which is connected to the first motor; and

[0037] A heater, which is electrically connected to the first motor.

[0038] The application provides the start power for the first motor by controlling the battery pack, so that the first motor rotates and drives the engine to start. After the engine starts, the first motor can generate power, the battery pack can be heated in a low-temperature environment to maintain a normal working temperature, the vehicle cannot be driven, and the user experience is improved.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0041] Figure 1 A structural block diagram of one embodiment of the electric vehicle of the application is shown.

[0042] Figure 2 A specific structural block diagram of the electric vehicle of Figure 1 is shown.

[0043] Figure 3 A flowchart of one embodiment of the battery pack heating control method of the electric vehicle of the application is shown.

[0044] Figure 4 A flowchart of another embodiment of the battery pack heating control method of the electric vehicle of the application is shown.

[0045] Figure 5 A flowchart of one embodiment of the step of generating the power generation control signal of the battery pack heating control method of the electric vehicle shown in Figure 4 is shown.

[0046] Figure 6 An embodiment of a battery pack heating control method according to the present application is shown. Figure 5 A flow chart of an embodiment of a battery pack heating control method according to the present application is shown.

[0047] Figure 7 A flow chart of an embodiment of a battery pack heating control method according to the present application is shown.

[0048] Figure 8 A flow chart of an embodiment of a battery pack heating control method according to the present application is shown. DETAILED DESCRIPTION

[0049] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to various alternative embodiments as well. The following description is not limited to the exemplary embodiments, but rather, is applicable to any apparatus and method within the scope of the present application. Various changes in form and details of the exemplary embodiments can be made without departing from the spirit and scope of the application. Therefore, the following detailed description is not only to describe some embodiments consistent with the present application, but also to completely describe all such embodiments, for the purpose of completeness and accuracy.

[0050] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless otherwise defined, technical terms or scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The use of the terms "first", "second" and "third" and similar terms in the description and claims of this patent document is not used to denote any sequential or chronological order, either to the objects referred to, but to distinguish two or more separate components or steps. Also, the use of the terms "one" and "the" and similar referents in the context of describing the application are to be construed to cover both the singular and the plural, unless otherwise indicated by the context. "Several" or "a plurality" means two or more. Unless otherwise indicated, the terms "front", "back", "up", "down", and the like in the description and in the claims, if any, are used for convenience and are not intended to be limiting. The use of the terms "including", "containing", "comprising", "having" and similar terms in the description and claims is used to mean that the components or steps listed after such a term are included in, but not limited to, the listed components or steps. The use of the term "connected" and "coupled" to the extent they are used in the description and claims is used in the broadest context, and can encompass both direct and indirect connections and couplings.

[0051] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0052] The electric vehicle of this application embodiment includes a battery pack, a first motor, an engine, and a heater. The first motor is electrically connected to the battery pack and the heater, and is also connected to the engine. The battery pack heating control method of this application embodiment includes: acquiring the temperature of the battery pack; if the temperature is lower than a first temperature threshold, generating a start control signal to control the battery pack to provide starting power to the first motor, causing the first motor to rotate and start the engine; generating a power generation control signal to control the first motor to generate electricity, supplying power to the heater, causing the heater to heat up and thus heat the battery pack. By controlling the battery pack to provide starting power to the first motor, the battery pack can be heated in low-temperature environments, maintaining its normal operating temperature and preventing the vehicle from becoming undrivable.

[0053] This application provides a battery pack heating control method for an electric vehicle, a vehicle controller, and an electric vehicle. The battery pack heating control method, vehicle controller, and electric vehicle of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments and implementations can be combined with each other.

[0054] Figure 1 The diagram shown is a structural block diagram of one embodiment of the electric vehicle 200 of this application. Figure 1 As shown, the electric vehicle 200 is a hybrid electric vehicle. The electric vehicle 200 includes a battery pack 201, a first motor 202, an engine 203, and a heater 204. The first motor 202 is connected to the engine 203. The first motor 202 is a generator; the engine 203 can drive the first motor 202 to rotate, thereby generating electricity. The first motor 202 is electrically connected to the battery pack 201 and the heater 204. Under normal operating conditions, the battery pack 201 supplies power to the first motor 202, and the first motor 202 supplies power to the heater 204. The battery pack 201 is a high-voltage battery pack, providing the electrical energy required for the electric vehicle 200 to operate. In some embodiments, the heater 204 is a PTC heating element. The PTC heating element includes a PTC ceramic heating element and an aluminum tube. This type of PTC heating element has the advantages of low thermal resistance and high heat exchange efficiency, and is an automatically temperature-controlled, energy-saving electric heater. The battery pack 201 is surrounded by heat exchange tubes (not shown), and coolant flows inside the heat exchange tubes. A heater 204 is located on the heat exchange tubes to heat the coolant, thereby heating the battery pack 201.

[0055] Figure 2 The diagram shown is a structural block diagram of another embodiment of the electric vehicle 200 of this application. Figure 2 As shown, relative to Figure 1 In this embodiment, the electric vehicle 200 further includes a second motor 205, a transmission 206, and wheels 207. The second motor 205 is connected to the transmission 206, and the transmission 206 is connected to the wheels 207. In this embodiment, the second motor 205 is an electric motor. When the electric vehicle 200 is in pure electric drive mode, the second motor 205 drives the transmission 206, which in turn drives the wheels 207, thereby changing the driving state of the electric vehicle 200. The electric vehicle 200 also includes a clutch 208, which is connected to the first motor 202 and the transmission 206. When the electric vehicle 200 requires the engine 203 to drive it, the first motor 202 starts, driving the engine 203 to start. The engine 203 then drives the first motor 202 to generate electricity. At this time, the clutch 208 is disengaged from the transmission 206. When the electric vehicle 200 enters a high-speed state, the clutch 208 engages with the transmission 206, allowing the engine 203 to drive the wheels 207.

[0056] The electric vehicle 200 also includes a high-voltage control module 209 and a vehicle controller 210. The battery pack 201 is electrically connected to the high-voltage control module 209. The high-voltage control module 209 is responsible for controlling the high-voltage devices of the electric vehicle 200, including a first motor 202 and a second motor 205. The high-voltage control module 209 includes a first motor controller 2091 and a second motor controller 2092. The first motor controller 2091 is electrically connected to the first motor 202, and the second motor controller 2092 is electrically connected to the second motor 205. The battery pack 201 supplies power to the first motor 202 and the second motor 205 through the high-voltage control module 209. The vehicle controller 210 is the core controller of the electric vehicle 200, electrically connected to the high-voltage control module 209, and provides control signals to the high-voltage control module 209. The high-voltage control module 209 operates according to the control signals. The first motor controller 2091 is electrically connected to the first motor 202 and the vehicle controller 210. The vehicle controller 210 can control the first motor controller 2091 and the second motor controller 2092 to control the first motor 202 and the second motor 205.

[0057] Figure 3 The diagram shows a flowchart of one embodiment of the battery pack heating control method 100 for an electric vehicle according to this application. The vehicle controller 210 is used to execute the battery pack heating control method 100. Figure 3As shown, the battery pack heating control method 100 includes steps 110, 120, and 130. In step 110, the temperature of the battery pack 201 is acquired. In step 120, if the temperature is lower than a first temperature threshold, a start control signal is generated to control the battery pack 201 to provide starting power to the first motor 202, causing the first motor 202 to rotate and drive the engine 203 to start. In step 130, a power generation control signal is generated to control the first motor 202 to generate electricity, supplying power to the heater 204, causing the heater 204 to heat up and heat the battery pack 201. In some embodiments, when the temperature of the battery pack 201 is lower than the first temperature threshold, by controlling the battery pack 201 to provide starting power to the first motor 202, the first motor 202 starts, driving the engine 203 to start. After the engine 203 starts, it drives the first motor 202 to generate electricity, thereby supplying power to the heater 204. In this way, the battery pack 201 can be heated in a low-temperature environment, maintaining its normal operating temperature, preventing the electric vehicle 200 from becoming undrivable, and improving the user experience. Even when the battery pack 201 has a low charge, due to the characteristics of the battery pack 201, it can output instantaneous power to start the first motor 202, which in turn starts the engine 203, and then drives the first motor 202 to generate electricity. In this way, the battery pack 201 can be heated even when the battery pack 201 has a low charge.

[0058] Combination Figures 1-3 The vehicle controller 210 is electrically connected to the battery pack 201 and is used to acquire the temperature of the battery pack 201. The battery pack 201 includes a temperature sensor (not shown) that can detect the temperature of the battery pack 201. The vehicle controller 210 is electrically connected to the temperature sensor, acquires the signal from the temperature sensor, and if the temperature is lower than a first temperature threshold, the vehicle controller 210 generates a start control signal to the high-voltage control module 209. The high-voltage control module 209 causes the battery pack 201 to provide starting power to the first motor 202, causing the first motor 202 to rotate and drive the engine 203 to start. The high-voltage control module 209 may include a relay connected between the first motor 202 and the battery pack 201. The vehicle controller 210 generates a start control signal to control the relay to close, connecting the first motor 202 and the battery pack 201. Furthermore, the vehicle controller 210 generates a power generation control signal to the high-voltage control module 209. The high-voltage control module 209 controls the first motor 202 to generate power, which supplies power to the heater 204, causing the heater 204 to heat up and heat the coolant around the battery pack 201, thereby heating the battery pack 201.

[0059] Figure 4 The diagram shown is a flowchart of another embodiment of the battery pack heating control method 100 for electric vehicles according to this application. Figure 4 As shown, compared Figure 3In some embodiments, the battery pack heating control method 100 further comprises steps 121 and 140. In step 121, after the engine 203 is started, a power-off control signal is generated to control the battery pack 201 to stop supplying power to the first motor 202. In combination with Figure 1 , Figure 2 and Figure 4 , after the engine 203 is started, the power-off control signal is generated by the vehicle control unit 210 to the high-voltage control module 209, and the high-voltage control module 209 controls the battery pack 201 to stop supplying power to the first motor 202. In a low-temperature environment, the battery pack 201 can have little or no power, and the battery pack 201 provides starting power to the first motor 202 to ensure that the engine 203 is started and no longer supplies power to the first motor 202. The engine 203 drives the first motor 202 to generate electricity. In this way, the battery pack 201 can also be heated when the battery pack 201 has very low or no power.

[0060] In step 140, if the temperature is higher than the second temperature threshold, a power generation stop control signal is generated to control the first motor 202 to stop supplying power to the heater 204 to stop heating the battery pack 201. The second temperature threshold is higher than the first temperature threshold. When the vehicle control unit 210 determines that the temperature of the battery pack 201 is higher than the second temperature threshold, i.e., the temperature of the battery pack 201 has reached the normal working temperature, the vehicle control unit 210 generates a power generation stop control signal to the high-voltage control module 209, and the first motor controller 2091 in the high-voltage control module 209 controls the first motor 202 to stop supplying power to the heater 204, thereby stopping heating the battery pack 201, preventing the temperature of the battery pack 201 from being too high, and saving energy.

[0061] Figure 5 For Figure 3 an embodiment of step 130 of the battery pack heating control method 100 of the electric vehicle shown in FIG. 1. In some embodiments, in step 130, a power generation control signal is generated to control the first motor 202 to generate power, including steps 131 and 132. In step 131, the target power is determined, including the required power of the heater 204 and the load power required by at least one load electrically connected to the battery pack 201. In step 132, according to the target power, a power generation control signal is generated to control the first motor 202 to generate power according to the target power to supply power to the heater 204 and the load. In combination with Figure 1 , Figure 2 and Figure 5The electric vehicle 200 includes other loads such as air conditioning, instruments, and lighting. The target power of the first motor 202 includes the power required by the heater 204 and at least one other load. The vehicle controller 210 determines the target power and, based on the target power, generates a power generation control signal to the high-voltage control module 209. The high-voltage control module 209 controls the first motor 202 to generate power according to the target power to supply power to the heater 204 and the loads.

[0062] Figure 6 As shown Figure 5 The flowchart illustrates an embodiment of step 132 of the battery pack heating control method 100. In some embodiments, step 132 generates a power generation control signal based on a target power, including steps 1321-1324. In step 1321, the actual current and actual voltage of the first motor 202 are acquired. In step 1322, a target current is determined based on the target power and the actual voltage. In step 1323, if the actual current is less than the target current, a power increase control signal is generated to control the power generation of the first motor 202 to increase. In step 1324, if the actual current is greater than the target current, a power decrease control signal is generated to control the power generation of the first motor 202 to decrease. Figure 1 , Figure 2 and Figure 6 The vehicle controller 210 acquires the actual current and voltage of the first motor 202 detected by the high-voltage control module 209, and determines the target current based on the target power and the actual voltage. The vehicle controller 210 includes a PI controller, which uses closed-loop control to obtain the power output of the first motor 202. The PI controller obtains the target power based on the power required by the heater 204 and at least one other load, calculates the target current based on the actual voltage obtained from the first motor controller 2091, and compares the target current with the actual current. If the actual current is less than the target current, the PI controller generates a power increase control signal, i.e., requests the first motor 202 to increase its generating torque command to the high-voltage control module 209, and the high-voltage control module 209 controls the first motor 202 to increase its generating power. If the actual current is greater than the target current, the PI controller generates a power decrease control signal, i.e., requests the first motor 202 to decrease its generating torque command to the high-voltage control module 209, and the high-voltage control module 209 controls the first motor 202 to decrease its generating power. In some embodiments, controlling the first motor to generate power according to the target power ensures that while the electric vehicle 200 is heating the battery pack 201, other loads such as the air conditioner can operate normally.

[0063] Figure 7 The diagram shown is another flowchart of an embodiment of the battery pack heating control method 100 for electric vehicles according to this application. Figure 7As shown, in some embodiments, the battery pack heating control method 100 further comprises step 150 and step 160. In step 150, a drive control signal is generated to control the second motor 205 to drive the transmission 206 to drive the wheels 207. In step 160, when the drive control signal is generated, if the temperature is lower than the first temperature threshold, a start control signal is generated and a power generation control signal is generated. In combination Figure 2 and Figure 7 The vehicle controller 210 generates the drive control signal to the high voltage control module 209, which controls the second motor 205 to drive the transmission 206 to drive the wheels 207. During the pure electric driving of the electric vehicle 200, the vehicle controller 210 obtains the temperature of the battery pack 201, and if the temperature is lower than the first temperature threshold, a start control signal is generated to start the first motor 202, and a power generation control signal is generated to control the heating of the battery pack 201 to prevent the temperature from being too low to affect the normal driving of the vehicle.

[0064] The battery pack heating control method 100 comprises step 170 and step 180. In step 170, a parking control signal is generated to control the second motor 205 to stop driving the transmission 206 to park. In step 180, after the parking control signal is generated, if the temperature is lower than the first temperature threshold, a start control signal is generated and a power generation control signal is generated. When parking, if the temperature of the battery pack 201 is low, heating can be performed. If the battery pack 201 is low in power and the temperature is lower than the first temperature threshold, a parking control signal is generated to park, and the battery pack 201 is heated. The first temperature threshold is equal to or slightly higher than the lower limit of the normal working temperature of the battery pack 201, and different threshold values can be set according to different battery packs 201.

[0065] Figure 8 Another flowchart of an embodiment of the battery pack heating control method 100 of the electric vehicle of the present application is shown. As shown, Figure 8 In some embodiments, the battery pack heating control method 100 comprises step 190 and step 191. In step 190, a heating instruction issued by a user mobile device is received. In step 191, in response to the heating instruction, a start control signal and a power generation control signal are generated. In combination Figure 2 and Figure 8The vehicle controller 210 receives the heating instruction sent by the user mobile device, and generates the start control signal and the power generation control signal in response to the heating instruction. In some embodiments, the user mobile device can be a mobile phone, a tablet computer, etc. bound with the electric vehicle 200. When encountering cold weather, the user can remotely control the electric vehicle 200 through the APP to preheat the battery pack 201 to reach the normal working temperature, which is convenient for the user to drive. The user can actively request to heat the battery pack 201 according to the environmental temperature. In some embodiments, in response to the heating instruction, the temperature of the battery pack 201 is acquired. If the temperature is lower than the first temperature threshold, the start control signal and the power generation control signal are generated.

[0066] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0067] It is to be understood that the application is not limited to the precise details of construction and the above-described and shown in the drawings, and that various modifications and changes can be applied to the application without departing from the scope thereof or sacrificing any substantive or essential features thereof. The scope of the application should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with their full scope of equivalents.

Claims

1. A battery pack heating control method of an electric vehicle, characterized by, The electric vehicle comprises a battery pack, a first motor, an engine and a heater, the first motor is electrically connected with the battery pack and the heater, and the first motor is connected with the engine; the battery pack heating control method comprises: obtaining the temperature of the battery pack; if the temperature is lower than a first temperature threshold, generating a start control signal to control the battery pack to provide start power to the first motor, so that the first motor rotates and drives the engine to start; the start power comprises instantaneous power; and generating a power generation control signal to control the first motor to generate power and supply power to the heater, so that the heater generates heat to heat the battery pack; after the engine starts, generating a power-off control signal to control the battery pack to stop supplying power to the first motor.

2. The battery pack heating control method of an electric vehicle according to claim 1, characterized by, The generating of the power generation control signal to control the first motor to generate power comprises: determining a target power, the target power comprising a required power required by the heater and a load power required by at least one load electrically connected with the battery pack; according to the target power, generating the power generation control signal to control the first motor to generate power according to the target power and supply power to the heater and the load.

3. The battery pack heating control method of an electric vehicle according to claim 2, characterized by, The generating of the power generation control signal according to the target power comprises: obtaining the actual current and actual voltage of the first motor; determining a target current according to the target power and the actual voltage; if the actual current is less than the target current, generating a power increase control signal to control the power generation of the first motor to increase; if the actual current is greater than the target current, generating a power decrease control signal to control the power generation of the first motor to decrease.

4. The battery pack heating control method of an electric vehicle according to claim 1, characterized by, The battery pack heating control method further comprises: if the temperature is higher than a second temperature threshold, generating a stop power generation control signal to control the first motor to stop supplying power to the heater to stop heating the battery pack; The second temperature threshold is higher than the first temperature threshold.

5. The battery pack heating control method of an electric vehicle according to claim 1, characterized by, The electric vehicle comprises a second motor, a transmission and a wheel, the second motor is connected with the transmission, and the transmission is connected with the wheel; The battery pack heating control method comprises: generating a driving control signal to control the second motor to drive the transmission to drive the wheel; when the driving control signal is generated, if the temperature is lower than a first temperature threshold, the start control signal is generated, and the power generation control signal is generated.

6. The battery pack heating control method of the electric vehicle according to claim 5, characterized by, The battery pack heating control method comprises: generating a parking control signal to control the second motor to stop driving the transmission to park; after the parking control signal is generated, if the temperature is lower than a first temperature threshold, the start control signal is generated, and the power generation control signal is generated.

7. The battery pack heating control method of an electric vehicle according to claim 1, characterized by, The battery pack heating control method comprises: receiving a heating instruction issued by a user mobile device; in response to the heating instruction, the start control signal and the power generation control signal are generated.

8. A vehicle controller of an electric vehicle, characterized by comprising: A battery pack heating control method for executing any one of claims 1-7.

9. An electric vehicle, characterized by comprises: a battery pack; The vehicle controller according to claim 8 is electrically connected with the battery pack; A first motor is electrically connected with the battery pack and the vehicle controller. An engine is connected with the first motor, and a heater is electrically connected with the first motor.

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