Vehicle power reduction method, device, electronic device and readable storage medium

Abstract

The present invention provides a vehicle power reduction method, device, electronic device and readable storage medium. The method comprises: receiving a battery power reduction request, the battery power reduction request includes a battery power limit, responding to the battery power reduction request, obtaining a first power of a first motor and a second power of a second motor, determining the working state of the first motor and the second motor according to the battery power limit, the first power and the second power, and if the working state is a dual-motor power generation state, executing a first power reduction strategy, and if the working state is a dual-motor driving state, executing a second power reduction strategy. According to the battery power limit, the first power and the second power, the working state of the first motor and the second motor is determined, and according to the working state of the first motor and the second motor, the first power reduction strategy or the second power reduction strategy corresponding to different working states is executed to avoid the problem of unstable vehicle driving and transmission jerking.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle power reduction method, device, electronic equipment and readable storage medium. Background Art

[0002] For P2P4 architecture vehicles, in hybrid state, if the battery power drops, the HCU (Hybrid Control Unit) needs to adjust the power of the P2 motor and the P4 motor to prevent the battery from being over-discharged or over-charged.

[0003] In the related art, in hybrid driving conditions, when the battery power drops, the method in which the HCU adjusts the power of the P2 motor and the P4 motor will cause problems such as unstable vehicle driving and transmission jerking during braking. Summary of the invention

[0004] An embodiment of the present invention provides a vehicle power reduction method, which aims to avoid the problem of unstable driving of the vehicle and jerking of the transmission in the process of responding to battery power reduction.

[0005] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0006] In a first aspect, an embodiment of the present invention provides a vehicle power reduction method, the method comprising:

[0007] receiving a battery power reduction request, wherein the battery power reduction request is represented by a battery power limit, wherein the battery power limit includes a positive battery power limit and a negative battery power limit;

[0008] In response to the battery power reduction request, obtaining a first power of the first motor and a second power of the second motor;

[0009] determining the operating states of the first motor and the second motor according to the battery power limit, the first power, and the second power;

[0010] If the working state is a dual-motor power generation state, executing a first power reduction strategy;

[0011] If the working state is a dual-motor driving state, a second power reduction strategy is executed.

[0012] Optionally, determining the working states of the first motor and the second motor according to the battery power limit, the first power, and the second power includes:

[0013] calculating a sum of the first power and the second power to obtain a third power;

[0014] Determine a battery power target limit from the battery power positive limit and the battery power negative limit according to the first power and the second power, and subtract the third power from the battery power target limit to obtain a power difference;

[0015] If the power difference is positive, determining that the working state is a dual-motor power generation state;

[0016] If the power difference is negative, it is determined that the working state is a dual-motor driving state.

[0017] Optionally, the first motor is a P2 motor;

[0018] Executing a first power reduction strategy includes:

[0019] The power of the P2 motor and the power of the engine are controlled to simultaneously decrease the power difference.

[0020] Optionally, the first motor is a P2 motor, and the second motor is a P4 motor;

[0021] The second power reduction strategy is executed, including:

[0022] Control the power of the P4 motor to decrease by the absolute value of the power difference; at the same time,

[0023] The power request of the P2 is frozen to keep the power of the P2 at the second power.

[0024] In a second aspect, an embodiment of the present invention provides a vehicle power reduction device, the device comprising:

[0025] A receiving module, configured to receive a battery power reduction request, wherein the battery power reduction request is represented by a battery power limit, wherein the battery power limit includes a positive battery power limit and a negative battery power limit;

[0026] An acquisition module, configured to respond to the battery power reduction request and acquire a first power of the first motor and a second power of the second motor;

[0027] a determination module, configured to determine the working states of the first motor and the second motor according to the battery power limit, the first power and the second power;

[0028] A first execution module, configured to execute a first power reduction strategy if the working state is a dual-motor power generation state;

[0029] The second execution module is used to execute a second power reduction strategy if the working state is a dual-motor driving state.

[0030] Optionally, the determining module includes:

[0031] A first calculation submodule, configured to calculate the sum of the first power and the second power to obtain a third power;

[0032] a second calculation submodule, configured to determine a battery power target limit from the battery power positive limit and the battery power negative limit according to the first power and the second power, and subtract the third power from the battery power target limit to obtain a power difference;

[0033] A first determination submodule, configured to determine that the working state is a dual-motor power generation state if the power difference is positive;

[0034] The second determination submodule is used to determine that the working state is a dual-motor driving state if the power difference is negative.

[0035] Optionally, the first motor is a P2 motor;

[0036] The first execution module includes:

[0037] The first execution submodule is used to control the power of the P2 motor and the power of the engine to simultaneously reduce the power difference.

[0038] Optionally, the first motor is a P2 motor, and the second motor is a P4 motor;

[0039] The second execution module includes:

[0040] The second execution submodule is used to control the power of the P4 motor to decrease by the absolute value of the power difference; at the same time,

[0041] A freezing submodule is used to freeze the power request of P2 so that the power of P2 is maintained at the second power.

[0042] In a third aspect, an embodiment of the present invention further provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the vehicle power reduction method described in the first aspect are implemented.

[0043] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the vehicle power reduction method described in the first aspect are implemented.

[0044] In the present invention, a battery power reduction request is first received, the battery power reduction request includes a battery power limit, and in response to the battery power reduction request, the first power of the first motor and the second power of the second motor are obtained. According to the battery power limit, the first power and the second power, the working state of the first motor and the second motor is determined. If the working state is a dual-motor power generation state, the first power reduction strategy is executed, and if the working state is a dual-motor driving state, the second power reduction strategy is executed. After receiving the battery power reduction request, the battery power limit is obtained, and the first power of the first motor and the second power of the second motor are obtained, so as to determine the working state of the first motor and the second motor, and according to the working state of the first motor and the second motor, the first power reduction strategy or the second power reduction strategy corresponding to different working states is executed to reduce the impact on the vehicle driving when adjusting the power of the motor, and avoid the problem of unstable vehicle driving and transmission jerking during braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0046] Figure 1 is a flowchart of the steps of a vehicle power reduction method in an embodiment of the present invention;

[0047] Figure 2 is a flowchart of the steps of determining the working state of a motor in a method for reducing the power of a vehicle in an embodiment of the present invention;

[0048] Figure 3 is a schematic diagram of a vehicle power reduction device in an embodiment of the present invention;

[0049] Figure 4 It is a structural schematic diagram of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] For P2P4 architecture vehicles, in the hybrid state, if the battery power drops, the HCU needs to adjust the power of the P2 motor and the P4 motor to prevent the battery from over-discharge or over-charge. The P2 motor is the motor placed at the input end of the gearbox, and the P4 motor is the motor placed after the gearbox and separated from the output shaft of the engine.

[0052] In the related art, in hybrid driving conditions, when the battery power drops, the method in which the HCU adjusts the power of the P2 motor and the P4 motor will cause problems such as unstable vehicle driving and transmission jerking during braking.

[0053] In order to overcome the above problems, the present application proposes a vehicle power reduction method, which aims to avoid the problems of unstable driving and transmission jerking of the vehicle in response to battery power reduction.

[0054] refer to Figure 1 , Figure 1 is a flow chart of the steps of a vehicle power reduction method in an embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0055] Step S101: receiving a battery power reduction request, wherein the battery power reduction request is represented by a battery power limit value, and the battery power limit value includes a battery power positive limit value and a battery power negative limit value.

[0056] In this embodiment, in the hybrid state of the vehicle, if the battery is discharged or charged for a long time, the BMS (battery management system) will send a battery power reduction request to the HCU to prevent the battery from being over-discharged or overcharged. The vehicle power reduction method of the present application can be applied to the HCU, and the battery power reduction request is accepted by the HCU, and the power reduction strategy is executed according to the received battery power reduction request. Among them, the battery power reduction request is characterized by a battery power limit, and the battery power limit includes a positive battery power limit and a negative battery power limit, wherein the positive battery power limit is the limit when the battery is discharged, and the negative battery power limit is the limit when the battery is charged. The specific battery power limit can be determined according to the power that the battery can currently provide, and the battery power limit is less than the power that the battery can currently provide.

[0057] Step S102: In response to the battery power reduction request, a first power of the first motor and a second power of the second motor are obtained.

[0058] In this embodiment, after receiving the battery power reduction request, the HCU responds to the battery power reduction request and obtains the battery power limit therein, and then obtains the first power of the first motor and the second power of the second motor, wherein the first motor may be a P2 motor and the second motor may be a P4 motor, or the first motor may be a P4 motor and the second motor may be a P2 motor.

[0059] The first power of the first motor and the second power of the second motor can be obtained by acquiring the torque request value of the first motor and the torque request value of the second motor and then performing data conversion between torque and power.

[0060] Step S103: determining the working states of the first motor and the second motor according to the battery power limit, the first power and the second power.

[0061] In this embodiment, the working state of the first motor and the second motor can be determined according to the relationship between the battery power limit and the first power and the second power, so that a specific power reduction strategy can be executed according to the specific working state of the first motor and the second motor.

[0062] Step S104: If the working state is the dual-motor power generation state, a first power reduction strategy is executed.

[0063] In this embodiment, if the states of the first motor and the second motor are both in the power generation state, the power generation state of the first motor and the second motor is a dual-motor power generation state, and at this time, the first power reduction strategy is executed.

[0064] Step S105: If the working state is a dual-motor driving state, a second power reduction strategy is executed.

[0065] In this embodiment, if the states of the first motor and the second motor are both in the driving state, the power generation state of the first motor and the second motor is a dual-motor driving state, and at this time, the second power reduction strategy is executed.

[0066] In this embodiment, a battery power reduction request is first received, the battery power reduction request includes a battery power limit, and in response to the battery power reduction request, the first power of the first motor and the second power of the second motor are obtained. According to the battery power limit, the first power and the second power, the working state of the first motor and the second motor is determined. If the working state is a dual-motor power generation state, the first power reduction strategy is executed, and if the working state is a dual-motor driving state, the second power reduction strategy is executed. After receiving the battery power reduction request, the battery power limit is obtained, and the first power of the first motor and the second power of the second motor are obtained, so as to determine the working state of the first motor and the second motor, and according to the working state of the first motor and the second motor, the first power reduction strategy or the second power reduction strategy corresponding to different working states is executed to reduce the impact of adjusting the power of the motor on the vehicle driving, and avoid the problem of unstable vehicle driving and transmission jerking during braking.

[0067] refer to Figure 2 , Figure 2 1 is a flowchart of the steps of determining the working state of a motor in a vehicle power reduction method in an embodiment of the present invention. In a feasible implementation manner, the working state of the first motor and the second motor is determined according to the battery power limit, the first power and the second power, including the following steps S201-S204:

[0068] Step S201: calculating the sum of the first power and the second power to obtain a third power;

[0069] Step S202: determining a battery power target limit from the battery power positive limit and the battery power negative limit according to the first power and the second power, and subtracting the third power from the battery power target limit to obtain a power difference;

[0070] Step S203: if the power difference is positive, determining that the working state is a dual-motor power generation state;

[0071] Step S204: If the power difference is negative, determining that the working state is a dual-motor driving state.

[0072] In this embodiment, the working states of the first motor and the second motor are determined according to the quantitative relationship between the battery power limit, the first power and the second power. Specifically, the sum of the first power and the second power is first calculated to obtain the third power, and then the battery power target limit is determined from the battery power positive limit and the battery power negative limit according to the first power and the second power, wherein the battery power target limit is one of the battery power positive limit and the battery power negative limit. If the values ​​of the first power and the second power are positive values, the battery power positive limit is determined as the battery power target limit. If the values ​​of the first power and the second power are negative values, the battery power negative limit is determined as the battery power target limit. The battery power target limit is used. The power target limit minus the third power is used to obtain the power difference. If the power difference is positive, it is determined that the working state is the dual-motor power generation state. For example, the motor power is divided into power generation power and drive power, the power generation power is recorded as negative power, and the drive power is recorded as positive power. If the working states of the first motor and the second motor are both in the power generation state, wherein the first power of the first motor is -40 watts, and the second power of the second motor is -40 watts, and when the battery reduces power, the battery power target limit is -60 watts. At this time, the third power obtained by the sum of the first power and the second power is -80 watts, and the power difference obtained by subtracting the third power -80 watts from the battery power target limit of -60 watts is 20 watts, and the power difference is positive.

[0073] If the power difference is negative, it is determined that the working state is a dual-motor driving state. For example, if the working states of the first motor and the second motor are both driving states, wherein the first power of the first motor is 40 watts, and the second power of the second motor is 40 watts, and when the battery reduces power, the battery power target limit is 60 watts. At this time, the third power obtained by the sum of the first power and the second power is 80 watts, and the power difference obtained by subtracting the third power 80 watts from the battery power target limit of 60 watts is -20 watts, and the power difference is negative.

[0074] Since it is difficult to trigger battery power reduction when one motor generates electricity and the other motor drives, the situation where one motor generates electricity and the other motor drives is not considered.

[0075] In the hybrid state, if the working state of the first motor and the second motor is the dual-motor power generation state, if the power of the P2 motor is reduced alone, the torque of the engine and the P2 motor will be out of sync, resulting in unstable front axle torque and the engine will spin wildly; if the power of the P4 motor is reduced alone, if the SOC (state of charge) is low, the P2 motor generates more electricity, and the braking energy recovery under braking conditions will easily trigger the battery power reduction, and the braking energy recovery of the P2 motor will be easily restricted, resulting in unstable vehicle driving.

[0076] Based on the above situation, in a feasible implementation manner, the first motor is a P2 motor;

[0077] Executing a first power reduction strategy includes:

[0078] The power of the P2 motor and the power of the engine are controlled to simultaneously decrease the power difference.

[0079] In this embodiment, when the working state of the first motor and the second motor is the dual motor power generation state, the HCU controls the power of the P2 motor and the power of the engine to simultaneously decrease the power difference. That is, the power of the P2 motor is controlled to decrease by the power difference so that the sum of the power generation of the first motor and the second motor does not exceed the battery power limit. For example, at this time, the power generation of the P2 motor is 40 watts, then the power generation of the P2 motor is controlled to decrease by 20 watts, at this time, the power generation of the P2 motor is reduced to 20 watts, at this time, the power of the P2 motor is -20 watts, and at the same time, the power of the engine is controlled to decrease by 20 watts. The power reduction amount of the engine can be converted into a corresponding torque reduction amount, so as to avoid the occurrence of engine revving and front axle torque mutation.

[0080] If both motors are in driving state, if the power of P2 motor is reduced alone, P2 motor is in power-assisting state at this time, and the power reduction of P2 motor will inevitably cause the torque fluctuation of the front axle, and the transmission cannot accept the huge torque fluctuation and will produce jerking; if the power of P4 motor is reduced alone, the power reduction of P4 motor will weaken the power of the whole vehicle. If the power of both motors is reduced at the same time, the torque fluctuation of the front axle will also be caused in driving state, causing jerking.

[0081] Based on the above situation, in a feasible implementation manner, the first motor is a P2 motor, and the second motor is a P4 motor;

[0082] The second power reduction strategy is executed, including:

[0083] Control the power of the P4 motor to decrease by the absolute value of the power difference; at the same time,

[0084] The power request of the P2 is frozen to keep the power of the P2 at the second power.

[0085] In this embodiment, when the working state of the first motor and the second motor is the dual motor driving state, the HCU controls the power of the P4 motor to decrease by the absolute value of the power difference. That is, the power of the P4 motor is controlled to decrease by the power difference so that the sum of the driving power of the first motor and the second motor does not exceed the battery power limit. For example, at this time, the driving power of the P4 motor is 40 watts, then the driving power of the P4 motor is controlled to decrease by 20 watts. At this time, the driving power of the P4 motor is 20 watts. At this time, the power of the P4 motor is 20 watts. At the same time, the torque request of P2 is frozen to keep the power of P2 at the second power. At this time, only the increase of the front axle torque output will be slowed down, and the front axle torque will not fluctuate, thereby avoiding the transmission from jerking. At the same time, the increase of the P2 torque can also be prevented from causing the increase of the power reduction of the P4 motor.

[0086] Based on the same inventive concept, the present application proposes a vehicle power reduction device, referring to Figure 3 , Figure 3 is a schematic diagram of a vehicle power reduction device in an embodiment of the present invention, such as Figure 3 As shown, the device comprises:

[0087] The receiving module 301 is used to receive a battery power reduction request, where the battery power reduction request is represented by a battery power limit value, where the battery power limit value includes a positive battery power limit value and a negative battery power limit value;

[0088] An acquisition module 302 is used to respond to the battery power reduction request and acquire a first power of the first motor and a second power of the second motor;

[0089] A determination module 303, configured to determine the working states of the first motor and the second motor according to the battery power limit, the first power and the second power;

[0090] A first execution module 304, configured to execute a first power reduction strategy if the working state is a dual-motor power generation state;

[0091] The second execution module 305 is configured to execute a second power reduction strategy if the working state is a dual-motor driving state.

[0092] Optionally, the determining module includes:

[0093] A first calculation submodule, configured to calculate the sum of the first power and the second power to obtain a third power;

[0094] a second calculation submodule, configured to determine a battery power target limit from the battery power positive limit and the battery power negative limit according to the first power and the second power, and subtract the third power from the battery power target limit to obtain a power difference;

[0095] A first determination submodule, configured to determine that the working state is a dual-motor power generation state if the power difference is positive;

[0096] The second determination submodule is used to determine that the working state is a dual-motor driving state if the power difference is negative.

[0097] Optionally, the first motor is a P2 motor;

[0098] The first execution module includes:

[0099] The first execution submodule is used to control the power of the P2 motor and the power of the engine to simultaneously reduce the power difference.

[0100] Optionally, the first motor is a P2 motor, and the second motor is a P4 motor;

[0101] The second execution module includes:

[0102] The second execution submodule is used to control the power of the P4 motor to decrease by the absolute value of the power difference; at the same time,

[0103] A freezing submodule is used to freeze the power request of P2 so that the power of P2 is maintained at the second power.

[0104] refer to Figure 4 , Figure 4 is a schematic diagram of the structure of an electronic device in an embodiment of the present invention, such as Figure 4 As shown, the present application also provides an electronic device, including:

[0105] Processor 41;

[0106] A memory 42 having instructions stored thereon, and a computer program stored in the memory and executable on the processor 41 , wherein when the computer program is executed by the processor 41 , the device executes a vehicle power reduction method.

[0107] The present application also provides a non-temporary computer-readable storage medium, on which a computer program is stored. When the computer program in the storage medium is executed by the processor 41 of the electronic device, the electronic device is enabled to execute the vehicle power reduction method.

[0108] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0109] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0110] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0111] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0112] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0113] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0114] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0115] The above is a detailed introduction to a vehicle power reduction method, device, electronic device and readable storage medium provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for a person skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A vehicle power reduction method, characterized in that: The method comprises: receiving a battery power reduction request, wherein the battery power reduction request is represented by a battery power limit, wherein the battery power limit includes a positive battery power limit and a negative battery power limit; In response to the battery power reduction request, obtaining a first power of a first motor and a second power of a second motor, wherein the first motor is a P2 motor and the second motor is a P4 motor; determining the operating states of the first motor and the second motor according to the battery power limit, the first power, and the second power; If the working state is a dual-motor power generation state, a first power reduction strategy is executed; If the working state is a dual-motor driving state, executing a second power reduction strategy; The executing the first power reduction strategy includes: controlling the power of the P2 motor and the power of the engine to simultaneously reduce the power difference; The execution of the second power reduction strategy includes: controlling the power of the P4 motor to drop by the absolute value of the power difference; and at the same time, freezing the power request of the P2 motor so that the power of the P2 motor is maintained at the second power, wherein the power difference is obtained by subtracting the sum of the first power and the second power from the battery power target limit, and the battery power target limit is determined based on the battery power limit.

2. The method according to claim 1, characterized in that Determining the working states of the first motor and the second motor according to the battery power limit, the first power, and the second power includes: calculating a sum of the first power and the second power to obtain a third power; According to the first power and the second power, determining a battery power target limit from the battery power positive limit and the battery power negative limit, and subtracting the third power from the battery power target limit to obtain a power difference; If the power difference is positive, determining that the working state is a dual-motor power generation state; If the power difference is negative, it is determined that the working state is a dual-motor driving state.

3. A vehicle power reduction device, characterized in that: The device comprises: A receiving module, configured to receive a battery power reduction request, wherein the battery power reduction request is represented by a battery power limit, wherein the battery power limit includes a positive battery power limit and a negative battery power limit; An acquisition module, configured to respond to the battery power reduction request and acquire a first power of a first motor and a second power of a second motor, wherein the first motor is a P2 motor and the second motor is a P4 motor; a determination module, configured to determine the working states of the first motor and the second motor according to the battery power limit, the first power and the second power; A first execution module, configured to execute a first power reduction strategy if the working state is a dual-motor power generation state; a second execution module, configured to execute a second power reduction strategy if the working state is a dual-motor driving state; The first execution module includes: A first execution submodule is used to control the power of the P2 motor and the power of the engine to simultaneously decrease the power difference; The second execution module includes: The second execution submodule is used to control the power of the P4 motor to decrease by the absolute value of the power difference; at the same time, a freezing submodule, configured to freeze the power request of the P2 motor so that the power of the P2 motor is maintained at the second power; The power difference is obtained by subtracting the sum of the first power and the second power from the battery power target limit, and the battery power target limit is determined according to the battery power limit.

4. The device according to claim 3, characterized in that The determination module comprises: A first calculation submodule, configured to calculate the sum of the first power and the second power to obtain a third power; a second calculation submodule, configured to determine a battery power target limit from the battery power positive limit and the battery power negative limit according to the first power and the second power, and subtract the third power from the battery power target limit to obtain a power difference; A first determination submodule, configured to determine that the working state is a dual-motor power generation state if the power difference is positive; The second determination submodule is used to determine that the working state is a dual-motor driving state if the power difference is negative.

5. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the vehicle power reduction method according to any one of claims 1 to 2 are implemented.

6. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the vehicle power reduction method according to any one of claims 1 to 2 are implemented.

Images