Vehicle control method, vehicle, and storage medium

Abstract

The present invention discloses a vehicle control method, a vehicle, and a storage medium. The vehicle includes a high-voltage circuit and a heating device connected to the high-voltage circuit, the heating device includes a water circulation circuit and a power-consuming element connected to the water circulation circuit for heat exchange, and the water circulation circuit includes a water pump. The method includes: detecting that the high-voltage circuit is powered off; obtaining a first voltage of the high-voltage circuit and a water temperature of the water circulation circuit; controlling the operation of the water pump according to the first voltage and the water temperature, and controlling the operation of the heating device so that the power-consuming element is electrically connected to the high-voltage circuit. The present invention aims to reuse existing modules of the entire vehicle without adding additional high-voltage discharge circuits, thereby ensuring vehicle safety while reducing the size of the vehicle, reducing the cost of the entire vehicle, further protecting the effective heat dissipation of the power-consuming elements in the heating device, and improving the energy recovery rate of the entire vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle control method, a vehicle, and a storage medium. Background Art

[0002] With the development of economy and technology, vehicles are becoming more and more popular, and vehicle safety is receiving increasing attention. The operation of vehicles generally requires the installation of high-voltage circuits. The high-voltage components in these circuits contain high-voltage capacitors. These capacitors store electricity, which can cause high-voltage electricity to persist even after the circuit is powered off. If this electricity is not discharged, it can persist in the high-voltage circuit for a long time, posing safety risks such as electric shock and leakage.

[0003] At present, voltage discharge is generally performed by installing an additional active discharge circuit on the vehicle. The active discharge circuit is generally only used for voltage discharge and will not participate in other vehicle operations. This requires the vehicle to add additional circuit structures, such as microcontrollers, signal amplifiers, driver optocouplers, field-effect transistors and isolated power supplies, etc. This requires additional space on the vehicle body, resulting in the vehicle being too large. Summary of the Invention

[0004] The main purpose of the present invention is to provide a vehicle control method, a vehicle, and a storage medium, aiming to reuse the existing modules of the entire vehicle without adding additional high-voltage discharge circuits, thereby ensuring vehicle safety while reducing the vehicle volume and lowering the cost of the entire vehicle. On this basis, it protects the effective heat dissipation of power-consuming components in the heating device and improves the energy recovery and utilization rate of the entire vehicle.

[0005] To achieve the above objectives, the present invention provides a vehicle control method, wherein the vehicle includes a high-voltage circuit and a heating device connected to the high-voltage circuit, the heating device includes a water circulation circuit and a power-consuming element connected to the water circulation circuit for heat exchange, and the water circulation circuit includes a water pump. The vehicle control method includes the following steps:

[0006] Detecting that the high-voltage circuit is powered off;

[0007] obtaining a first voltage of the high-voltage circuit and a water temperature of the water circulation circuit;

[0008] The water pump is controlled to operate according to the first voltage and the water temperature, and the heating device is controlled to operate so that the power-consuming element is electrically connected to the high-voltage circuit.

[0009] Optionally, the first voltage includes an initial voltage when the high-voltage circuit is powered off, and the water temperature includes an initial temperature of water in the water circulation circuit when the high-voltage circuit is powered off. The step of controlling the operation of the water pump according to the first voltage and the water temperature includes:

[0010] determining a first predicted temperature of the power-consuming component in a target state according to the initial voltage and the initial temperature, wherein the target state is that the high-voltage circuit decreases from the initial voltage to the target voltage when the water pump is in an off state;

[0011] The water pump is controlled to operate according to the first predicted temperature.

[0012] Optionally, the step of controlling the operation of the water pump according to the first predicted temperature includes:

[0013] When the first predicted temperature is less than or equal to a preset temperature threshold, controlling the water pump to shut down;

[0014] When the first predicted temperature is greater than the preset temperature threshold, the water pump is controlled to start.

[0015] Optionally, after the step of controlling the water pump to start, the method further includes:

[0016] When the duration of the water pump being turned on is greater than or equal to a first preset duration, the step of controlling the heating device to operate so that the power-consuming element is electrically connected to the high-voltage circuit is performed.

[0017] Optionally, the step of controlling the water pump to start includes:

[0018] determining a temperature difference between the first predicted temperature and the preset temperature threshold;

[0019] determining operating parameters of the water pump according to the temperature difference;

[0020] Controlling the water pump to start according to the operating parameters;

[0021] Wherein, the flow rate of the water pump corresponding to the operating parameter is positively correlated with the temperature difference value.

[0022] Optionally, the step of determining the operating parameters of the water pump according to the temperature difference includes:

[0023] When the temperature difference is less than or equal to a preset value, determining the first power as the operating parameter;

[0024] When the temperature difference is greater than the preset value, determining the second power as the operating parameter;

[0025] The first power is less than the second power.

[0026] Optionally, a preset mapping table is defined as a mapping relationship between the voltage of the high-voltage circuit, the water temperature of the water circulation circuit, and the operating power of the water pump. Before the step of determining the first power as the operating parameter, the step further includes:

[0027] When the temperature difference is less than or equal to a preset value, querying the preset mapping table and using a result in the preset mapping table that matches the initial voltage and the initial temperature as the first power;

[0028] And / or, before the step of determining the second power as the operating parameter, the method further includes:

[0029] When the temperature difference is greater than the preset value, the preset mapping table is searched and a result in the preset mapping table that matches the initial voltage and the initial temperature is used as the second power.

[0030] Optionally, the step of determining a first predicted temperature of the power-consuming component in the target state according to the initial voltage and the initial temperature includes:

[0031] determining a second predicted temperature of water in the water circulation loop under the target state according to the initial voltage and the initial temperature;

[0032] The first predicted temperature is determined according to the second predicted temperature.

[0033] Optionally, the step of determining the second predicted temperature of water in the water circulation loop under the target state according to the initial voltage and the initial temperature includes:

[0034] determining a voltage difference between the initial voltage and the target voltage;

[0035] determining a target energy required to be discharged by the high-voltage circuit according to the voltage difference;

[0036] determining a temperature change value of water in the water circulation loop under the target state according to the target energy;

[0037] The initial temperature is adjusted according to the temperature change value to obtain the second predicted temperature.

[0038] Optionally, the vehicle further includes a low-pressure circuit, the low-pressure circuit being used to power a control device and the water pump, the control device being used to control the operation of the heating device, and before the step of obtaining the first voltage of the high-pressure circuit and the water temperature of the water circulation circuit, the vehicle further includes:

[0039] When the high-voltage circuit is in a power-off state, the low-voltage circuit is controlled to remain powered on.

[0040] Optionally, after the step of controlling the operation of the water pump and the operation of the heating device so that the power-consuming element is electrically connected to the high-voltage circuit according to the first voltage and the water temperature, the method further includes:

[0041] detecting a current second voltage of the high-voltage circuit;

[0042] When the second voltage is less than a target voltage, controlling the heating device to operate so as to disconnect the power-consuming element from the high-voltage circuit;

[0043] When the water pump is in an on state, the water pump is controlled to remain on for a second preset time period and then turned off.

[0044] Optionally, the vehicle further includes a low-pressure circuit for powering the control device and the water pump. After the step of controlling the power-consuming element to stop operating and, when the water pump is in an on state, controlling the water pump to remain on for a second preset time and then turn off, the vehicle further includes:

[0045] Control the low-voltage circuit to power off.

[0046] Optionally, the heating device includes a heating branch connected in series with the high-voltage circuit, or the heating device includes multiple heating branches connected in parallel with the high-voltage circuit, the heating branch includes an electric heating element and a switch connected in series with the electric heating element, the power-consuming element includes the electric heating element, and the step of controlling the operation of the heating device to electrically connect the power-consuming element to the high-voltage circuit includes:

[0047] The switch is controlled to be turned on.

[0048] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a vehicle, comprising:

[0049] High-voltage circuit;

[0050] a heating device connected to the high-pressure circuit, the heating device comprising a water circulation circuit and a power-consuming element connected to the water circulation circuit for heat exchange, the water circulation circuit comprising a water pump;

[0051] A control device, wherein the high-voltage circuit and the heating device are both connected to the control device, and the control device includes: a memory, a processor, and a vehicle control program stored in the memory and executable on the processor, wherein the vehicle control program, when executed by the processor, implements the steps of the vehicle control method as described in any one of the above items.

[0052] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a vehicle control program is stored. When the vehicle control program is executed by a processor, the steps of the vehicle control method as described in any one of the above items are implemented.

[0053] The present invention proposes a vehicle control method. After the high-voltage circuit is controlled to be powered off, the vehicle is electrically connected to the high-voltage circuit through the power-consuming elements in the vehicle heating device, so that the remaining power in the high-voltage circuit can be consumed by the power-consuming elements, thereby realizing high-voltage discharge and effectively ensuring the safety of the vehicle. Since the heating device is a conventional device in the vehicle, based on this, the heating device is used to discharge the high voltage when the high-voltage circuit is powered off, and the existing modules of the whole vehicle are reused, so that the vehicle does not need to set up additional space to add additional active discharge circuits to release the voltage on the high-voltage circuit, which is conducive to simplifying the vehicle body structure and reducing the vehicle body volume, thereby ensuring the safety of the vehicle while reducing the vehicle volume and reducing the cost of the whole vehicle. On this basis, the method also controls the operation of the water pump based on the voltage of the high-voltage circuit and the water temperature of the water circulation circuit after high voltage is turned on, thereby ensuring that the heat dissipation effect of the water circulation on the power-consuming components can match the heat dissipation requirements of the power-consuming components during the high-voltage discharge process, ensuring that the power-consuming components operate within an appropriate temperature range to protect the effective heat dissipation of the power-consuming components. In addition, during the high-voltage discharge process, the excess heat released by the power-consuming components can be recovered and utilized through the water circulation effect, which can be used as heat to keep other components on the vehicle warm, thereby improving the energy recovery rate of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a schematic diagram of the high-voltage circuit connection structure in one embodiment of the vehicle of the present invention;

[0055] Figure 2 A schematic diagram of the hardware structure involved in the operation of a vehicle according to an embodiment of the present invention;

[0056] Figure 3 This is a schematic structural diagram of a water circulation circuit of a heating device in a vehicle embodiment of the present invention;

[0057] Figure 4 A schematic flow chart of an embodiment of a vehicle control method of the present invention;

[0058] Figure 5 A schematic flow chart of another embodiment of a vehicle control method according to the present invention;

[0059] Figure 6 A schematic flow chart of another embodiment of a vehicle control method of the present invention;

[0060] Figure 7 FIG. 4 is a flow chart of another embodiment of a vehicle control method according to the present invention.

[0061] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0062] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0063] The main solution of an embodiment of the present invention is: the vehicle includes a high-voltage circuit and a heating device connected to the high-voltage circuit, the heating device includes a water circulation circuit and a power-consuming element connected to the water circulation circuit for heat exchange, the water circulation circuit includes a water pump, and the vehicle control method includes the following steps: detecting that the high-voltage circuit is powered off; obtaining a first voltage of the high-voltage circuit and a water temperature of the water circulation circuit; controlling the operation of the water pump according to the first voltage and the water temperature, and controlling the operation of the heating device to electrically connect the power-consuming element to the high-voltage circuit.

[0064] In the prior art, voltage discharge is generally performed by setting up an additional active discharge circuit on the vehicle. The active discharge circuit is generally only used for voltage discharge and will not participate in other vehicle operations. This requires the vehicle to add additional circuit structures, such as single-chip microcomputers, signal amplifiers, driver optocouplers, field-effect transistors, and isolated power supplies, which requires additional space on the vehicle body, resulting in an excessively large vehicle volume.

[0065] The present invention provides the above-mentioned solution, aiming to reuse the existing modules of the entire vehicle without adding additional high-voltage discharge circuits, thereby ensuring vehicle safety while reducing the vehicle volume and lowering the cost of the entire vehicle. On this basis, it protects the effective heat dissipation of the power-consuming components in the heating device while improving the energy recovery and utilization rate of the entire vehicle.

[0066] An embodiment of the present invention provides a vehicle. In this embodiment, the vehicle is a new energy vehicle, such as a pure electric vehicle or a hybrid electric vehicle.

[0067] In the embodiment of the present invention, referring to Figure 1 and Figure 2 The vehicle includes a high-voltage circuit 2, a heating device 3 connected to the high-voltage circuit 2, and a control device 1. The high-voltage circuit 2 and the heating device 3 are both connected to the control device 1.

[0068] The high-voltage circuit 2 is specifically a circuit circuit connecting the on-board high-voltage battery and the on-board electrical devices.

[0069] In this embodiment, combined with Figure 3 Heating device 3 is a device in the vehicle used to heat the battery system. In other embodiments, heating device 3 may also be a device used for other heating functions in the vehicle, such as a device for increasing cabin temperature or heating seats. Heating device 3 is heat-exchangeably connected to the vehicle component that requires heating.

[0070] The heating device 3 includes a power-consuming element 31, which can be connected to the high-voltage circuit 2 in parallel, series, or other complex circuit configurations. A switch is provided in the circuit connecting the power-consuming element 31 and the high-voltage circuit 2. When the switch is closed, the power-consuming element 31 is electrically connected to the high-voltage circuit 2. When the switch is open, the power-consuming element 31 is disconnected from the high-voltage circuit 2. The switch can be a semiconductor switch, a relay switch, or other similar devices. In this embodiment, the power-consuming element 31 comprises the electric heating element in the heating device 3, which converts electrical energy into thermal energy, releasing heat to heat other components in the vehicle. Specifically, the electric heating element can be a PTC. In other embodiments, the power-consuming element 31 may also include other electronic components in the heating device 3 that consume electrical energy but operate for non-heating purposes.

[0071] Furthermore, in this embodiment, the heating device 3 includes a heating branch connected in series with the high-voltage circuit 2, or the heating device 3 includes multiple heating branches connected in parallel with the high-voltage circuit 2, and the heating branch includes an electric heating element and a switch connected in series with the electric heating element. The switch here can be an IGBT switch or a MOS tube switch. In this embodiment, there are more than one heating branches, and more than one heating branches are connected in parallel with the high-voltage circuit 2. In other embodiments, there is also one heating branch. There can be one or more electric heating elements on the heating branch. Among them, when the switch 32 is turned on, the electric heating element is connected in parallel with the high-voltage circuit 2; when the switch 32 is turned off, the electric heating element is disconnected from the high-voltage circuit 2.

[0072] It should be noted that, in addition to being connected to the heating device 3 , the high-voltage circuit 2 is also connected to a power distribution module (PDM), an air compressor (A / C module), an inverter (INV module), and the like.

[0073] Further, in this embodiment, referring to Figure 2 and Figure 3 , the heating device 3 includes a water circulation loop 34, the power-consuming element 31 is connected to the water circulation loop 34 for heat exchange, and the water circulation loop 34 includes a water pump 33, and the water pump 33 is connected to the control device 1. The water circulation loop 34 is connected to other components of the vehicle that have heating requirements (such as battery packs, etc.) for heat exchange. Among them, the power-consuming element 31 can be an electric heating element provided in the water circulation loop, and the heating object component required by the heating device 3 is connected to the water circulation loop for heat exchange. When the water pump 33 is turned on, water circulates in the water circulation loop, and the water absorbs the heat released by the electric heating element and flows to the location of the heating object component to heat the component. In addition, the power-consuming element 31 can also be a component other than the electric heating element that is connected to the water circulation loop for heat exchange.

[0074] When the power-consuming element 31 is energized with the high-voltage circuit 2 to relieve pressure, the water circulation circuit absorbs and stores heat generated by the power-consuming element 31 when the water pump is turned on, thereby recovering the heat from the power-consuming element 31. In low-temperature environments, the heat stored in the water circulation circuit of the heating device 3 can be transferred to other components requiring heating, such as the battery pack. The heat stored in these components, thanks to the water circulation circuit's insulation function, is then used to preheat the battery pack for the next low-temperature operation (e.g., charging or driving), effectively improving the vehicle's energy recovery rate.

[0075] Furthermore, in this embodiment, the vehicle also includes a low-voltage circuit 4, which is used to power the control device 1 and is connected to the control device 1. Specifically, the low-voltage circuit 4 is a circuit that connects the control device 1 to an onboard low-voltage battery (e.g., a storage battery). When the low-voltage circuit 4 is connected, the onboard low-voltage battery provides the power required for the operation of the control device 1. When the low-voltage circuit 4 is disconnected, the onboard low-voltage battery stops providing the power required for the operation of the control device 1.

[0076] In the embodiment of the present invention, referring to Figure 2 The vehicle control device 1 includes a processor 1001 (e.g., a CPU), a memory 1002, a timer 1003, and the like. The various components of the control device 1 are connected via a communication bus. The memory 1002 can be a high-speed RAM memory or a non-volatile memory such as a disk drive. Alternatively, the memory 1002 can be a storage device independent of the processor 1001.

[0077] Those skilled in the art will understand that Figure 2 The device structure shown in the figure does not constitute a limitation of the device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0078] In this embodiment, the control device 1 includes more than one controller. Specifically, the more than one controller includes a vehicle controller and a sub-controller connected to the vehicle controller. The sub-controller is built into the heating device 3 .

[0079] like Figure 2 As shown, the memory 1002 as a storage medium may include a vehicle control program. Figure 2 In the device shown, the processor 1001 can be used to call the vehicle control program stored in the memory 1002 and execute the relevant steps of the vehicle control method in the following embodiments.

[0080] An embodiment of the present invention further provides a vehicle control method, which is applied to the above-mentioned vehicle.

[0081] Reference Figure 4 , an embodiment of the vehicle control method of the present application is proposed. In this embodiment, the vehicle includes a high-pressure circuit and a heating device connected to the high-pressure circuit, the heating device includes a water circulation circuit and a power-consuming element connected to the water circulation circuit for heat exchange, the water circulation circuit includes a water pump, and the vehicle control method includes:

[0082] Step S10, controlling the high voltage circuit to be powered off;

[0083] Specifically, upon receiving a power-off command from the high-voltage circuit, the system can control the high-voltage circuit to be powered off. This power-off command is specifically a command for disconnecting the high-voltage circuit, thereby stopping the vehicle's high-voltage battery from supplying power to the vehicle's electrical devices. The power-off command can be a user-input command or a command automatically generated when the vehicle is detected to be in a dangerous state.

[0084] Step S20, obtaining a first voltage of the high-voltage circuit and a water temperature of the water circulation circuit;

[0085] In this embodiment, the first voltage includes the initial voltage after the high-voltage circuit is powered off, and the water temperature includes the initial temperature of the water in the water circulation loop after the high-voltage circuit is powered off. In other embodiments, the first voltage may include a voltage detected in real time after the high-voltage circuit is powered off, and the water temperature includes the temperature of the water in the water circulation loop detected in real time after the high-voltage circuit is powered off.

[0086] Step S30 , controlling the water pump to operate according to the first voltage and the water temperature, and controlling the heating device to operate so that the power-consuming element is electrically connected to the high-voltage circuit.

[0087] Different first voltages and different water temperatures correspond to different pump operating control parameters. These operating control parameters include power, flow rate, current, speed, opening, and / or on / off control parameters. Specifically, a correspondence between characteristic temperatures and pump operating parameters is pre-established. This correspondence can be in the form of a calculation relationship, a mapping relationship, or the like. Based on this correspondence, the pump operating parameters corresponding to the current characteristic temperature can be determined, and pump operation can be controlled according to the determined operating parameters.

[0088] In this embodiment, a mapping table of the high-voltage circuit voltage, the water temperature in the water circulation circuit and the water pump operating parameters is pre-established. By querying the mapping table through the first voltage and water temperature, the current target operating parameters of the water pump can be determined, and the water pump can be controlled to operate with the target operating parameters.

[0089] Specifically, after the high-voltage circuit is powered off, the vehicle controller sends a working instruction to the sub-controller of the heating device. After receiving the working instruction, the sub-controller sends an internal control signal. After the internal control signal is isolated from high and low voltages and driven amplified, it drives the relevant electronic components connected to the power-consuming components to operate so that the power-consuming components are electrically connected to the high-voltage circuit.

[0090] The electrical connection specifically means that the power-consuming components in the heating device are energized with the high-voltage circuit, and the remaining power in the high-voltage circuit is consumed by the power-consuming components.

[0091] After the high-voltage circuit is powered off, the heating device can be controlled to operate with target parameters in real time, or the heating device can be controlled to operate with target parameters when the high-voltage circuit operation reaches preset conditions.

[0092] The target parameters are specifically operating parameters of the heating device used to electrically connect the heating device's power-consuming elements to the high-voltage circuit. This electrical connection can include connecting the power-consuming elements to the high-voltage circuit in series, in parallel, or in other complex circuit configurations. If the heating device contains more than one power-consuming element, the connection method for each element can vary. The target parameters include, but are not limited to, opening a switch, closing a switch, and / or switching subcircuits. Any operating parameter of the heating device that electrically connects the heating device's power-consuming elements to the high-voltage circuit can be used as the target parameter.

[0093] A vehicle control method proposed in an embodiment of the present invention, after controlling the high-voltage circuit to be powered off, the vehicle is electrically connected to the high-voltage circuit through the power-consuming elements in the vehicle heating device, so that the remaining power in the high-voltage circuit can be consumed by the power-consuming elements, thereby realizing high-voltage discharge and effectively ensuring the safety of the vehicle. Since the heating device is a conventional device in the vehicle, based on this, the heating device is used to discharge the high voltage when the high-voltage circuit is powered off, and the existing modules of the whole vehicle are reused, so that the vehicle does not need to set up additional space to add additional active discharge circuits to release the voltage on the high-voltage circuit, which is conducive to simplifying the vehicle body structure and reducing the vehicle body volume, thereby ensuring the safety of the vehicle while reducing the vehicle volume and reducing the cost of the whole vehicle. On this basis, the method also controls the operation of the water pump based on the voltage of the high-voltage circuit and the water temperature of the water circulation circuit after high voltage is turned on, thereby ensuring that the heat dissipation effect of the water circulation on the power-consuming components can match the heat dissipation requirements of the power-consuming components during the high-voltage discharge process, ensuring that the power-consuming components operate within an appropriate temperature range to protect the effective heat dissipation of the power-consuming components. In addition, during the high-voltage discharge process, the excess heat released by the power-consuming components can be recovered and utilized through the water circulation effect, which can be used as heat to keep other components on the vehicle warm, thereby improving the energy recovery rate of the entire vehicle.

[0094] Furthermore, in this embodiment, after step S10, a third voltage currently present in the high-voltage circuit may be detected. When the third voltage is greater than a preset voltage, step S20 is executed. When the third voltage is less than or equal to the preset voltage, the heating device is controlled to disconnect the power-consuming element from the high-voltage circuit. The preset voltage is specifically a threshold used to determine whether the current energy in the high-voltage circuit meets the safety requirements for vehicle operation. A comparison between the third voltage and the preset voltage indicates whether the high-voltage circuit currently requires pressure relief. When the third voltage is greater than the preset voltage, it indicates that the voltage in the high-voltage circuit is too high after powering off and requires pressure relief to ensure safe operation. In this case, the power-consuming element in the heating device is connected to the high-voltage circuit after powering off to consume the remaining voltage in the high-voltage circuit, thereby ensuring vehicle safety. When the third voltage is less than or equal to the preset voltage, it indicates that the voltage in the high-voltage circuit is too low after powering off and meets safety requirements, and pressure relief is not required. In this case, the power-consuming element is disconnected from the high-voltage circuit, thereby improving vehicle power-off efficiency while ensuring vehicle safety.

[0095] Furthermore, based on the above embodiment, another embodiment of the vehicle control method of the present application is proposed. In this embodiment, the first voltage includes the initial voltage when the high-voltage circuit is powered off, and the water temperature includes the initial temperature of the water in the water circulation circuit when the high-voltage circuit is powered off. Figure 5 The step of controlling the operation of the water pump according to the first voltage and the water temperature includes:

[0096] Step S31, determining a first predicted temperature of the power-consuming component in a target state according to the initial voltage and the initial temperature, wherein the target state is when the water pump is in an off state and the high-voltage circuit voltage is reduced from the initial voltage to a target voltage;

[0097] Different initial voltages and different initial temperatures correspond to different first predicted temperatures. The correspondence between the initial voltage, initial temperature, and the first predicted temperature can be in the form of a calculation relationship, a mapping relationship, etc. Based on this correspondence, the first predicted temperature corresponding to the current initial voltage and initial temperature can be determined.

[0098] Specifically, in this embodiment, a second predicted temperature of the water in the water circulation loop under the target state is determined based on the initial voltage and the initial temperature; and the first predicted temperature is determined based on the second predicted temperature. It should be noted that the second predicted temperature and the first predicted temperature specifically represent the predicted temperatures of the high-pressure circuit after pressure relief. The second predicted temperature is calculated by looking up the initial voltage and initial temperature in a table or substituting them into a preset formula, and the first predicted temperature is calculated by looking up the second predicted temperature in a table or calculating the first predicted temperature.

[0099] Furthermore, in this embodiment, a voltage difference between the initial voltage and the target voltage is determined;

[0100] The target energy required to be discharged by the high-voltage circuit is determined based on the voltage difference; the temperature change value of the water in the water circulation circuit under the target state is determined based on the target energy; and the initial temperature is adjusted based on the temperature change value to obtain the second predicted temperature. The target energy is positively correlated with the voltage difference. The amplitude of the change in water temperature when the electrical energy in the high-voltage circuit is converted into thermal energy in water can be calculated as the temperature change value here by looking up the target energy and water characteristic parameters (such as the specific heat capacity of water, the volume of water and / or the density of water). The sum of the temperature change value and the initial temperature can be used as the second predicted temperature. In other embodiments, the temperature change value here can also be obtained by looking up the target energy table.

[0101] For example, the total energy released by the high-voltage circuit voltage is: Q = 1 / 2*C*U c 2 , where U c is the initial voltage in the high voltage circuit after the high voltage is turned off, U c The discharge requirement must meet the preset time (such as 5s, etc.) and discharge to below 60V (that is, the above-mentioned target voltage). C is the equivalent capacitance value of all capacitors in the high-voltage circuit.

[0102] If water circulation is not performed (that is, when the water pump is turned off), the first predicted temperature of the water in the water circulation loop after the high pressure is released (that is, the voltage is reduced from the initial voltage to the target voltage) is: T water =Q' / (c*ρ*V)+T c , Q'=1 / 2*C*(U c -U0) 2 ; Among them, Q' is the total energy discharged by the high-voltage circuit voltage (that is, the above-mentioned target energy), and is also the total energy generated by the power-consuming components consuming electricity, Tc is the initial temperature of the water, U0 is the above-mentioned target voltage (such as 60V), c is the specific heat capacity of water in the water circulation loop, ρ is the density of water in the water circulation loop, V is the volume of water in the water circulation loop, and Q' / (c*ρ*V) can be understood as the above-mentioned temperature change value.

[0103] If water circulation is not performed, the temperature of the power-consuming components in the heating device is: T PTC =T water +ΔT+T s ; Among them, T water is the temperature of the water in the water circulation loop after the high-pressure discharge is completed, ΔT is the temperature difference between the power-consuming element and the water, which is determined by the characteristics of the heating device and can be calibrated. s It is a temperature safety margin, usually 5 to 10°C.

[0104] Step S32: Control the water pump to operate according to the first predicted temperature.

[0105] Different predicted temperatures correspond to different pump operating parameters, and pump operation can be controlled according to the pump operating parameters corresponding to the predicted temperatures. In this embodiment, the pump flow rate corresponding to the pump operating parameters is positively correlated with the predicted temperature. In other embodiments, the pump flow rate corresponding to the pump operating parameters may be negatively correlated with the predicted temperature, or there may be no clear correlation pattern. The correspondence between the predicted temperature and the pump operating parameters can be pre-set. Based on this correspondence, the pump operating parameters can be obtained by looking up the predicted temperature in a table, or by calculating the pump operating parameters by substituting the predicted temperature into a preset formula.

[0106] In other embodiments, when the correspondence between the first voltage, water temperature, and water pump operating parameters is represented by the aforementioned mapping table, the water pump operating parameters corresponding to different high-voltage circuit voltages and water circulation circuit water temperatures can be determined based on the predicted temperature and stored in the mapping table. The results obtained by querying the mapping table based on the first voltage and water temperature can be used as the water pump operating parameters.

[0107] In this embodiment, the predicted temperature of the power-consuming components after the high-voltage circuit is depressurized is predicted by the initial voltage and initial water temperature after the high-voltage circuit is powered off. The water pump operation is controlled based on the predicted temperature to ensure that the operation of the water circulation circuit can be accurately matched with the heat dissipation requirements of the power-consuming components, thereby achieving the protection of the power-consuming components while improving the high-voltage circuit pressure relief efficiency.

[0108] Furthermore, in this embodiment, step S32 includes: when the first predicted temperature is less than or equal to a preset temperature threshold, controlling the water pump to be turned off; when the first predicted temperature is greater than the preset temperature threshold, controlling the water pump to be turned on.

[0109] The preset temperature threshold is specifically the maximum tolerable temperature of the power-consuming component. The preset temperature threshold can be used to distinguish whether the power-consuming component is at risk of damage during the pressure relief process.

[0110] When the water pump is turned on, it can operate according to pre-set fixed parameters, or it can be controlled to turn on according to operating parameters determined by actual state characteristic parameters of the high-pressure circuit.

[0111] When the first predicted temperature is less than or equal to the preset temperature threshold, the power-consuming component is relatively cool and unlikely to be damaged. Water circulation is not required to cool it, and the water pump can remain off to save energy. When the first predicted temperature is greater than the preset temperature threshold, the power-consuming component is too hot and likely to be damaged. In this case, the water pump is turned on to cool the power-consuming component through circulating water, protecting it and ensuring stable operation.

[0112] Furthermore, in this embodiment, the process of controlling the water pump to start is as follows: determining the temperature difference between the first predicted temperature and the preset temperature threshold; determining the operating parameters of the water pump based on the temperature difference; controlling the water pump to start based on the operating parameters; wherein the flow rate of the water pump corresponding to the operating parameters is positively correlated with the temperature difference.

[0113] The operating parameters here may include the motor speed, operating current or operating power of the water pump.

[0114] Different temperature differentials correspond to different operating parameters, and different operating parameters result in different pump flow rates. In this embodiment, when the temperature differential is less than or equal to a preset value, the first power is determined as the pump's operating parameter; when the temperature differential is greater than the preset value, the second power is determined as the pump's operating parameter. When the first power is less than the second power, the pump flow rate corresponding to the first power is less than the pump flow rate corresponding to the second power. The preset value is specifically a critical difference used to distinguish between high and low risk of damage to power-consuming components. In other embodiments, the pump's operating parameters can also be directly calculated from the temperature differential.

[0115] Among them, the first power and the second power can be pre-set fixed parameters, or parameters determined according to the actual state of the vehicle. Furthermore, in this embodiment, the operating power of the water pump is determined by the initial voltage and the initial temperature. The specific definition of the preset mapping table is the mapping relationship between the voltage of the high-pressure circuit, the water temperature of the water circulation circuit and the operating power of the water pump. Before the step of determining the first power as the operating parameter, it also includes: when the temperature difference value is less than or equal to the preset value, query the preset mapping table and use the result of the preset mapping table that matches the initial voltage and the initial temperature as the first power; and / or, before the step of determining the second power as the operating parameter, it also includes: when the temperature difference value is greater than the preset value, query the preset mapping table and use the result of the preset mapping table that matches the initial voltage and the initial temperature as the second power. In other embodiments, the operating power of the water pump can also be calculated by the initial voltage and initial temperature.

[0116] Based on this, it is beneficial to improve the accuracy of the water pump operating power to ensure that the flow control in the water circulation loop can further improve the reliability of the operation of power-consuming components and improve the utilization rate of vehicle energy recovery.

[0117] In this embodiment, when the first predicted temperature is greater than the preset temperature threshold, indicating that there is a risk of damage to the power-consuming element, the flow rate of the water pump is regulated according to the temperature difference, thereby ensuring that the water pump flow rate is accurately matched to the damage risk of the power-consuming element and is neither too large nor too small, thereby achieving an effective balance between protecting the power-consuming element, the heat recovery efficiency of the power-consuming element, and the pressure relief efficiency of the high-pressure circuit.

[0118] In other embodiments, even after the high-voltage circuit is powered off, a sensor can be used to detect the operating temperature of the power-consuming component. When the operating temperature is less than or equal to a preset temperature threshold, the water pump is controlled to be turned off; when the operating temperature is greater than the preset temperature threshold, the water pump is controlled to be turned on. The preset temperature threshold is specifically the maximum temperature tolerable of the power-consuming component, and the preset temperature threshold can be used to determine whether the power-consuming component is at risk of damage during the pressure relief process.

[0119] Furthermore, in this embodiment, after controlling the water pump to activate, the system further includes: when the water pump is activated for a duration greater than or equal to a first preset duration, controlling the heating device to electrically connect the power-consuming element to the high-voltage circuit. The first preset duration can be a pre-set fixed parameter or a parameter determined based on, for example, the first predicted temperature. In this embodiment, when the risk of damage to the power-consuming element is high, water circulation is first activated to cool the element, and then the heating device is activated to relieve pressure in the high-voltage circuit. This ensures that the operating temperature of the power-consuming element remains within a suitable temperature range during the high-voltage circuit depressurization process, thereby further improving the effectiveness of protecting the power-consuming element.

[0120] Furthermore, based on any of the above embodiments, another embodiment of the vehicle control method of the present application is proposed. In this embodiment, the vehicle further includes a low-voltage circuit, the low-voltage circuit is used to power the control device and the water pump, the control device is used to control the operation of the heating device, and the water pump is controlled according to the first voltage and the water temperature. Figure 6 , before step S20, further comprising:

[0121] Step S101 : When the high-voltage circuit is in a power-off state, controlling the low-voltage circuit to remain powered on.

[0122] It should be noted that step S101 is performed after step S10, and the above-mentioned steps S20 and S30 can be performed by the control device.

[0123] In this embodiment, when the high-pressure circuit is received, the low-pressure circuit is kept powered on to ensure that the control device and the water pump can work normally, thereby ensuring that after the high-pressure circuit is powered off, the control device can effectively control the heating device and the water pump to cooperate in depressurizing the high-pressure circuit.

[0124] Furthermore, in this embodiment, when the operation of the heating device reaches the pressure relief completion condition of the high-pressure circuit, the low-pressure circuit can be controlled to be powered off.

[0125] In other embodiments, when the high-voltage circuit is in a power-off state, the low-voltage circuit may also stop being powered on, and the high-voltage electrical energy stored in the high-voltage circuit is converted into low-voltage electrical energy through a high-low voltage conversion circuit to provide electrical energy required for the operation of the control device.

[0126] Furthermore, based on any of the above embodiments, another embodiment of the vehicle control method of the present application is proposed. In this embodiment, referring to Figure 7 After step S30, the method further includes:

[0127] Step S40, detecting the current second voltage of the high-voltage circuit;

[0128] Specifically, after step S30, the current voltage of the high-voltage circuit may be detected at a preset time interval as the second voltage.

[0129] Step S50: When the second voltage is less than the target voltage, controlling the heating device to operate so as to disconnect the power-consuming component from the high-voltage circuit;

[0130] Step S60: When the water pump is in the on state, control the water pump to remain on for a second preset time period and then turn off.

[0131] The target voltage is specifically the maximum voltage allowed after the high-voltage circuit is powered off when the vehicle safety requirements are met. If the second voltage is less than the target voltage, it indicates that the amount of electricity currently stored in the high-voltage circuit has met the vehicle safety requirements. At this time, it can be considered that the high-voltage circuit has reached the pressure relief completion condition, and the heating device can be controlled to stop running and stop supplying voltage to the high-voltage circuit. Specifically, when the heating device includes the above-mentioned switch, the switch can be controlled to be disconnected. When the second voltage is greater than or equal to the target voltage, it indicates that the amount of electricity currently stored in the high-voltage circuit does not meet the vehicle safety requirements. At this time, it can be considered that the high-voltage circuit has not reached the pressure relief completion condition, and the heating device can be controlled to maintain operation so that the power-consuming components in the heating device are electrically connected to the high-voltage circuit.

[0132] Furthermore, when the above-mentioned step S101 is included before step S30 or the low-voltage circuit is currently in an open state, the low-voltage circuit may be controlled to be powered off after step S60.

[0133] In other embodiments, after step S20, when the operating time of the heating device after the high-voltage circuit is powered off is greater than or equal to the set time, the heating device may be controlled to operate to disconnect the power-consuming element from the high-voltage circuit.

[0134] Furthermore, based on any of the above embodiments, another embodiment of the vehicle control method of the present application is provided. In this embodiment, the heating device includes a heating branch connected in series with the high-voltage circuit, or the heating device includes multiple heating branches connected in parallel with the high-voltage circuit, the heating branch includes an electric heater and a switch connected in series with the electric heater, the power-consuming element includes the electric heater, and the step of controlling the operation of the heating device to electrically connect the power-consuming element to the high-voltage circuit includes: controlling the switch to conduct. The switch here can be an IGBT switch or a MOS tube switch.

[0135] The switch can be continuously on or intermittently on. The frequency of the switch when intermittently on can be a preset fixed parameter or a parameter determined according to the actual pressure relief condition of the high-voltage circuit.

[0136] In this embodiment, the switch response speed is higher than that of a general switch and has better operating stability under high-voltage environment. By turning on the switch, the electric heating element connected in series is connected to the high-voltage circuit to relieve the pressure of the high-voltage circuit, which is beneficial to improving the timeliness of the high-voltage circuit pressure relief and the operating stability, and further improving the safety of the vehicle.

[0137] Furthermore, in this embodiment, the step of controlling the switch to be turned on includes:

[0138] Step S21, obtaining a fourth voltage of the high-voltage circuit;

[0139] The fourth voltage here may be the initial voltage of the high-voltage circuit detected before the high-voltage circuit is powered off when the power-off instruction is received, or may be the voltage detected in real time when the switch is turned on or after the high-voltage circuit is powered off.

[0140] Step S22, determining a target duty cycle of a drive signal of the switch according to the fourth voltage;

[0141] The target duty cycle specifically refers to the percentage of the switch's on-time during a preset period, that is, the percentage of time during which the drive signal input to the switch is an on-time signal during the preset period. A larger target duty cycle results in a longer on-time and a shorter off-time during the preset period. Different fourth voltages correspond to different target duty cycles. In this embodiment, the target duty cycle is negatively correlated with the fourth voltage. In other embodiments, the target duty cycle may be positively correlated with the fourth voltage, or may have no clear correlation.

[0142] The corresponding relationship between the fourth voltage and the target duty cycle can be preset, and the corresponding relationship can be in the form of a calculation formula, a mapping relationship, etc. Based on the corresponding relationship, the target duty cycle corresponding to the current fourth voltage can be determined.

[0143] In one implementation of this embodiment, the target duty cycle tends to increase as the fourth voltage decreases. Specifically, the real-time voltage of the high-voltage circuit can be continuously monitored as the fourth voltage after the high-voltage circuit is powered off, and the target duty cycle is determined based on the real-time voltage monitored in real time to control the conduction of the switch. Specifically, the initial voltage of the high-voltage circuit can be obtained when the high-voltage circuit is powered off, and a target curve can be generated based on the initial voltage. The target curve represents a curve in which the target duty cycle changes with the voltage of the high-voltage circuit. In the target curve, as the power-off time gradually increases, the voltage of the high-voltage circuit gradually decreases, and the target duty cycle gradually increases. Based on this, the target duty cycle corresponding to the current high-voltage return voltage can be determined according to the target curve.

[0144] In another implementation of this embodiment, when the fourth voltage is greater than a preset voltage, the first duty cycle is determined to be the target duty cycle; when the fourth voltage is less than or equal to the preset voltage, the second duty cycle is determined to be the target duty cycle; wherein the first duty cycle is less than the second duty cycle. The preset voltage is specifically a voltage threshold value used to distinguish whether the operating power of the heating device is too high. When the fourth voltage is greater than the preset voltage, it indicates that the operating power of the heating device is too high and there is a risk of overheating and damage. At this time, using a smaller first duty cycle to control the switch to be turned on is beneficial to avoid excessive heat and damage caused by excessive power consumption of power-consuming components, which is beneficial to protecting the heating device while achieving high-voltage circuit pressure relief; when the fourth voltage is less than or equal to the preset voltage, there is no risk of overheating cycle. At this time, using a larger second duty cycle to control the switch to be turned on can achieve protection of the heating device while improving the pressure relief efficiency of the high-voltage circuit.

[0145] In another implementation of this embodiment, a voltage difference between the fourth voltage and the preset voltage can be determined, and the target duty cycle can be determined based on the voltage difference. Different voltage differences correspond to different target duty cycles. Specifically, the voltage difference is calculated by subtracting the preset voltage from the fourth voltage, and the target duty cycle is negatively correlated with the voltage difference. The target duty cycle can be calculated by substituting the voltage difference into a preset formula, or by querying a preset mapping table based on the voltage difference.

[0146] Step S23 , controlling the switch to be turned on according to the driving signal corresponding to the target duty cycle.

[0147] Among them, after receiving the power-off instruction, the fourth voltage of the high-voltage circuit can be obtained at set intervals, and the switch can be controlled to be turned on according to the target duty cycle corresponding to the obtained fourth voltage until the high-voltage circuit reaches the pressure relief completion condition.

[0148] In this embodiment, the on-time of the switch is controlled according to the voltage of the high-voltage circuit, ensuring that the switch on-time is neither too long nor too short, thereby effectively improving the operational stability of the heating device and preventing the heating device from overheating or underheating, thereby ensuring operation within an appropriate temperature range. The target duty cycle increases as the fourth voltage decreases, thereby dynamically varying the switch on-time with the voltage of the high-voltage circuit during high-voltage discharge, further improving the operational stability of the heating device during high-voltage discharge.

[0149] In addition, an embodiment of the present invention further provides a storage medium on which a vehicle control program is stored. When the vehicle control program is executed by a processor, the relevant steps of any embodiment of the above vehicle control method are implemented.

[0150] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0151] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0152] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, vehicle, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0153] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vehicle control method, characterized in that: The vehicle includes a high-voltage circuit and a heating device connected to the high-voltage circuit, the heating device includes a water circulation circuit and a power-consuming element connected to the water circulation circuit for heat exchange, the heating device further includes a heating branch connected in series with the high-voltage circuit, or the heating device further includes multiple heating branches connected in parallel with the high-voltage circuit; the heating branch includes an electric heater and a switch connected in series with the electric heater, the power-consuming element includes the electric heater, and the water circulation circuit includes a water pump. The vehicle control method includes the following steps: Detecting that the high-voltage circuit is powered off; obtaining a first voltage of the high-voltage circuit and a water temperature of the water circulation circuit; controlling the water pump to operate according to the first voltage and the water temperature, and controlling the heating device to operate so that the power-consuming element is electrically connected to the high-voltage circuit; The step of controlling the operation of the heating device so that the power-consuming element is electrically connected to the high-voltage circuit includes: controlling the switch to be turned on.

2. The vehicle control method according to claim 1, wherein: The first voltage includes an initial voltage when the high-voltage circuit is powered off, and the water temperature includes an initial temperature of water in the water circulation circuit when the high-voltage circuit is powered off. The step of controlling the operation of the water pump according to the first voltage and the water temperature includes: determining a first predicted temperature of the power-consuming component in a target state according to the initial voltage and the initial temperature, wherein the target state is that the high-voltage circuit decreases from the initial voltage to the target voltage when the water pump is in an off state; The water pump is controlled to operate according to the first predicted temperature.

3. The vehicle control method according to claim 2, wherein: The step of controlling the operation of the water pump according to the first predicted temperature includes: When the first predicted temperature is less than or equal to a preset temperature threshold, controlling the water pump to shut down; When the first predicted temperature is greater than the preset temperature threshold, the water pump is controlled to start.

4. The vehicle control method according to claim 3, wherein: After the step of controlling the water pump to start, the method further includes: When the duration of the water pump being turned on is greater than or equal to a first preset duration, the step of controlling the heating device to operate so that the power-consuming element is electrically connected to the high-voltage circuit is performed.

5. The vehicle control method according to claim 4, wherein: The step of controlling the water pump to start includes: determining a temperature difference between the first predicted temperature and the preset temperature threshold; determining operating parameters of the water pump according to the temperature difference; Controlling the water pump to start according to the operating parameters; Wherein, the flow rate of the water pump corresponding to the operating parameter is positively correlated with the temperature difference value.

6. The vehicle control method according to claim 5, wherein: The step of determining the operating parameters of the water pump according to the temperature difference includes: When the temperature difference is less than or equal to a preset value, determining the first power as the operating parameter; When the temperature difference is greater than the preset value, determining the second power as the operating parameter; The first power is less than the second power.

7. The vehicle control method according to claim 6, wherein: A preset mapping table is defined as a mapping relationship between the voltage of the high-voltage circuit, the water temperature of the water circulation circuit, and the operating power of the water pump. Before the step of determining the first power as the operating parameter, the step further includes: When the temperature difference is less than or equal to a preset value, querying the preset mapping table and using a result in the preset mapping table that matches the initial voltage and the initial temperature as the first power; And / or, before the step of determining the second power as the operating parameter, the method further includes: When the temperature difference is greater than the preset value, the preset mapping table is searched and a result in the preset mapping table that matches the initial voltage and the initial temperature is used as the second power.

8. The vehicle control method according to claim 2, wherein: The step of determining the first predicted temperature of the power-consuming component in the target state according to the initial voltage and the initial temperature includes: determining a second predicted temperature of water in the water circulation loop under the target state according to the initial voltage and the initial temperature; The first predicted temperature is determined according to the second predicted temperature.

9. The vehicle control method according to claim 8, wherein: The step of determining the second predicted temperature of water in the water circulation loop in the target state according to the initial voltage and the initial temperature comprises: determining a voltage difference between the initial voltage and the target voltage; determining a target energy required to be discharged by the high-voltage circuit according to the voltage difference; determining a temperature change value of water in the water circulation loop under the target state according to the target energy; The initial temperature is adjusted according to the temperature change value to obtain the second predicted temperature.

10. The vehicle control method according to any one of claims 1 to 9, characterized in that: The vehicle further includes a low-pressure circuit, the low-pressure circuit being used to power a control device and the water pump, the control device being used to control the operation of the heating device, and before the step of obtaining the first voltage of the high-pressure circuit and the water temperature of the water circulation circuit, the vehicle further includes: When the high-voltage circuit is in a power-off state, the low-voltage circuit is controlled to remain powered on.

11. The vehicle control method according to any one of claims 1 to 9, characterized in that: After the step of controlling the water pump to operate according to the first voltage and the water temperature, and controlling the heating device to operate so that the power-consuming element is electrically connected to the high-voltage circuit, the method further includes: detecting a current second voltage of the high-voltage circuit; When the second voltage is less than a target voltage, controlling the heating device to operate so as to disconnect the power-consuming element from the high-voltage circuit; When the water pump is in an on state, the water pump is controlled to remain on for a second preset time period and then turned off.

12. The vehicle control method according to claim 11, wherein: The vehicle further includes a low-pressure circuit for supplying power to the control device and the water pump. After the step of controlling the power-consuming element to stop operating and, when the water pump is in an on state, controlling the water pump to remain on for a second preset time and then turn off, the vehicle further includes: Control the low-voltage circuit to power off.

13. A vehicle, characterized in that: The vehicle comprises: High-voltage circuit; a heating device connected to the high-pressure circuit, the heating device comprising a water circulation circuit and a power-consuming element connected to the water circulation circuit for heat exchange, the water circulation circuit comprising a water pump; A control device, wherein the high-voltage circuit and the heating device are both connected to the control device, and the control device includes: a memory, a processor, and a vehicle control program stored in the memory and executable on the processor, wherein the vehicle control program, when executed by the processor, implements the steps of the vehicle control method according to any one of claims 1 to 12.

14. A storage medium, characterized in that The storage medium stores a vehicle control program, which, when executed by a processor, implements the steps of the vehicle control method according to any one of claims 1 to 12.

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