Vehicle energy recovery rate determination method, device, storage medium and vehicle

Abstract

The present invention discloses a method, device, storage medium and vehicle for determining the energy recovery rate of a vehicle. The method part comprises: receiving an acquisition instruction for the energy recovery rate of the vehicle from a user, then determining the cumulative output energy of the engine during the operation of the vehicle, and determining the cumulative power generation energy of the generator during the operation of the vehicle. If the acquisition instruction is a first instruction, the energy recovery rate of the vehicle is determined according to the cumulative output energy, the cumulative power generation energy, the cumulative driving energy of the driving motor during the operation of the vehicle, and the cumulative feedback energy. If the acquisition instruction is a second instruction, the energy recovery rate of the vehicle is determined according to the cumulative output energy, the cumulative power generation energy, the cumulative discharge energy and the cumulative feeding energy of the power battery pack during the operation of the vehicle. The present invention acquires different energy recovery utilization rates according to different acquisition instruction types, so that the obtained energy recovery utilization rates can meet the needs of different vehicle operating conditions, and have high adaptability and practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicles, and in particular to a method, device, storage medium and vehicle for determining a vehicle energy recovery rate. Background Art

[0002] During the driving of electric vehicles, it is necessary to recover as much vehicle energy as possible to extend the driving range of the electric vehicle. The existing method for calculating the energy recovery rate of electric vehicles is generally to load professional measuring instruments on the electric vehicle to measure the energy consumption and feedback results of the electric vehicle under different driving conditions, and then determine the energy recovery rate of the electric vehicle based on the measurement results and a fixed energy recovery calculation method. For example, in pure electric vehicles, the voltage, discharge current, and feed current of the power battery pack of the vehicle during operation are generally measured by measuring instruments, and then the discharge power and feed power of the power battery pack are calculated based on the measured power battery pack voltage and current, and then the feed power is divided by the discharge power to obtain the energy recovery rate of the electric vehicle.

[0003] However, a fixed energy recovery calculation method can only obtain one vehicle energy recovery rate. During the use of the vehicle, different vehicle operating conditions will have different requirements for the accuracy of the vehicle energy recovery rate. That is, different vehicle energy recovery rates may be required according to the needs of the user to use the vehicle to meet different vehicle operating conditions. Therefore, the existing energy recovery calculation method has low applicability and cannot meet the needs of different vehicle operating conditions. Summary of the invention

[0004] The present invention provides a vehicle energy recovery rate determination method, device, storage medium and vehicle to solve the problem that the existing energy recovery rate calculation method cannot meet the requirements of different vehicle use conditions.

[0005] A method for determining a vehicle energy recovery rate, comprising:

[0006] receiving a user's instruction for obtaining the energy recovery rate of the vehicle;

[0007] determining a cumulative output energy of the engine during operation of the vehicle, and determining a cumulative power generation energy of the generator during operation of the vehicle;

[0008] If the acquisition instruction is a first instruction, determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the driving motor during the operation of the vehicle, and the accumulated feedback energy;

[0009] If the acquisition instruction is the second instruction, the energy recovery rate of the vehicle is determined according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feeding energy of the power battery pack during the operation of the vehicle.

[0010] Further, if the acquisition instruction is the first instruction, the calculation formula of the energy recovery rate of the vehicle is:

[0011]

[0012] in, is the energy recovery rate, Q DM1 is the cumulative driving energy, Q DM2 is the accumulated feedback energy, Q E1 is the cumulative output energy, Q PM1 is the accumulated power generation energy.

[0013] Furthermore, if the acquisition instruction is the second instruction, the calculation formula of the energy recovery rate of the vehicle is:

[0014]

[0015] in, is the energy recovery rate, Q B1 is the cumulative discharge energy, Q B2 is the cumulative feeding energy, Q E1 is the cumulative output energy, Q PM1 is the accumulated power generation energy.

[0016] Further, the determining of the cumulative output energy of the engine during the operation of the vehicle includes:

[0017] Determining the real-time output energy of the engine according to the real-time torque and real-time speed of the engine;

[0018] All real-time output energies of the engine during the operation of the vehicle are summed to obtain the accumulated output energy.

[0019] Further, the determining the accumulated power generation energy of the generator during the operation of the vehicle includes:

[0020] Determine the real-time power generation energy of the generator according to the real-time torque and real-time speed of the generator;

[0021] All real-time power generation energies of the generator during the operation of the vehicle are summed to obtain the accumulated power generation energy.

[0022] Furthermore, before determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the drive motor during the operation of the vehicle, and the accumulated feedback energy, the method further includes:

[0023] Determine the state of the drive motor according to the real-time torque of the drive motor;

[0024] If the state of the drive motor is the driving state, determining the real-time driving energy of the drive motor according to the real-time speed and real-time torque of the drive motor in the driving state, and summing all the real-time driving energies of the drive motor during the operation of the vehicle to obtain the accumulated driving energy;

[0025] If the state of the drive motor is a feedback state, the real-time feedback energy of the drive motor is determined according to the real-time speed and real-time torque of the drive motor in the feedback state, and all real-time feedback energies of the drive motor during the operation of the vehicle are summed to obtain the accumulated feedback energy.

[0026] Furthermore, before determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feed energy of the power battery pack during the operation of the vehicle, the method further includes:

[0027] Determining a state of the power battery pack according to the current of the power battery pack;

[0028] If the state of the power battery pack is a discharge state, determining the real-time discharge energy of the power battery pack according to the voltage and current of the power battery pack in the discharge state, and summing all the real-time discharge energies of the power battery pack during the operation of the vehicle to obtain the accumulated discharge energy;

[0029] If the power battery pack is in a feeding state, the real-time feeding energy of the power battery pack is determined according to the voltage and current of the power battery pack in the feeding state, and all real-time feedback energies of the power battery pack during the operation of the vehicle are summed to obtain the accumulated feeding energy.

[0030] A vehicle energy recovery rate determination device, comprising:

[0031] A receiving module, used for receiving a user's instruction for obtaining the energy recovery rate of the vehicle;

[0032] a first determination module, for determining a cumulative output energy of the engine during operation of the vehicle, and determining a cumulative power generation energy of the generator during operation of the vehicle;

[0033] a second determination module, configured to determine the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the driving motor during the operation of the vehicle, and the accumulated feedback energy if the acquisition instruction is the first instruction;

[0034] The third determination module is used to determine the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feeding energy of the power battery pack during the operation of the vehicle if the acquisition instruction is the second instruction.

[0035] A vehicle energy recovery rate determination device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the vehicle energy recovery rate determination method are implemented.

[0036] A readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned vehicle energy recovery rate determination method are implemented.

[0037] A vehicle comprises the above-mentioned device for determining the vehicle energy recovery rate.

[0038] In a solution provided by the above-mentioned vehicle energy recovery rate determination method, device, storage medium and vehicle, by receiving a vehicle energy recovery rate acquisition instruction based on user needs, the energy of different devices is acquired according to different acquisition instruction types, and then energy recovery utilization rates with different accuracies are determined according to the energy of different devices, so that the obtained energy recovery utilization rate can meet the needs of different vehicle operating conditions, and has high adaptability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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 labor.

[0040] Figure 1 is a flow chart of a method for determining a vehicle energy recovery rate in a first embodiment of the present invention;

[0041] Figure 2 is a structural schematic diagram of a vehicle energy recovery system in an embodiment of the present invention;

[0042] Figure 3 yes Figure 1 A schematic diagram of an implementation process of step S10;

[0043] Figure 4 is a structural schematic diagram of a device for determining a vehicle energy recovery rate in Embodiment 1 of the present invention;

[0044] Figure 5 is another flow chart of the method for determining the vehicle energy recovery rate in the second embodiment of the present invention;

[0045] Figure 6 is another structural schematic diagram of the vehicle energy recovery rate determination device in the second embodiment of the present invention;

[0046] Figure 7 2 is another structural schematic diagram of the vehicle energy recovery rate determination device in an embodiment of the present invention.

[0047] Among them, the reference numerals in the accompanying drawings are as follows:

[0048] A-gearbox; B-power battery pack; E-engine; PM-generator; DM-drive motor. DETAILED DESCRIPTION

[0049] 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.

[0050] The vehicle energy recovery rate determination method provided in the embodiment of the present invention can be applied to a vehicle energy recovery system, which includes an engine, a generator, a drive motor, a power battery pack and a vehicle energy recovery rate determination device. The vehicle energy recovery rate determination device receives a user's acquisition instruction for the vehicle energy recovery rate, then determines the cumulative output energy of the engine during the vehicle operation, and then determines the cumulative power generation energy of the generator during the vehicle operation. If the acquisition instruction is a first instruction, the vehicle energy recovery rate is determined according to the cumulative output energy, the cumulative power generation energy, the cumulative driving energy of the drive motor during the vehicle operation, and the cumulative feedback energy. If the acquisition instruction is a second instruction, the vehicle energy recovery rate is determined according to the cumulative output energy, the cumulative power generation energy, the cumulative discharge energy of the power battery pack during the vehicle operation, and the cumulative feeding energy, so that the energy recovery utilization rate obtained can meet the needs of different vehicle use conditions.

[0051] In this embodiment, the vehicle energy recovery system includes an engine, a generator, a drive motor, a power battery pack and a vehicle energy recovery rate determination device for exemplary purposes only. In other embodiments, the vehicle energy recovery rate determination system also includes other necessary vehicle devices, which will not be repeated here.

[0052] In one embodiment, if Figure 1 As shown, a method for determining a vehicle energy recovery rate is provided, and the method is applied to a vehicle energy recovery rate determination device as an example for description, and includes the following steps:

[0053] S10: receiving a user's instruction for obtaining the vehicle energy recovery rate.

[0054] The user can send an acquisition instruction for the vehicle energy recovery rate to the vehicle according to the energy recovery rate of his own vehicle, so that the vehicle energy recovery rate determination device can determine the energy changes of each energy consumption or energy production device of the vehicle after receiving the acquisition instruction for the vehicle energy recovery rate from the user, so as to determine the vehicle energy recovery rate according to the acquisition instruction type and the energy changes of each device.

[0055] S20: Determine the cumulative output energy of the engine during the operation of the vehicle, and determine the cumulative power generation energy of the generator during the operation of the vehicle.

[0056] After obtaining the user's instruction on the vehicle's energy recovery rate, during the period of vehicle operation from the start-up time to the stop time, it is necessary to obtain the operating status of the engine on the vehicle in real time, so as to determine the cumulative output energy of the engine during the operation of the vehicle based on the real-time operating status of the engine. It is also necessary to collect the operating status of the generator on the vehicle in real time, so as to determine the cumulative generated energy of the generator during the operation of the vehicle based on the real-time operating status of the generator.

[0057] S30: If the acquired instruction is the first instruction, the energy recovery rate of the vehicle is determined according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the driving motor during the operation of the vehicle, and the accumulated feedback energy.

[0058] After obtaining the user's acquisition instruction for the vehicle's energy recovery rate, if the acquisition instruction is determined to be the first instruction, then in addition to determining the cumulative output energy of the engine during the vehicle's operation and the cumulative power generation energy of the generator during the vehicle's operation, it is also necessary to obtain the operating status of the drive motor on the vehicle in real time, so as to determine the cumulative driving energy and cumulative feedback energy of the drive motor during the vehicle's operation according to the real-time operating status, and then determine the vehicle's energy recovery rate according to the cumulative output energy, the cumulative power generation energy, the cumulative driving energy and the cumulative feedback energy of the drive motor during the vehicle's operation.

[0059] S40: If the acquired instruction is the second instruction, the energy recovery rate of the vehicle is determined according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy of the power battery pack during the operation of the vehicle, and the accumulated feeding energy.

[0060] After obtaining the user's acquisition instruction for the vehicle's energy recovery rate, if it is determined that the acquisition instruction is the second instruction, indicating that the user has high requirements for the accuracy of the vehicle's energy recovery rate, then in addition to determining the cumulative output energy of the engine during the vehicle's operation and the cumulative power generation energy of the generator during the vehicle's operation, it is also necessary to obtain the energy changes of the power battery pack on the vehicle in real time, so as to determine the discharge energy and cumulative feeding energy of the power battery pack during the vehicle's operation based on the energy changes of the power battery pack, and then determine the vehicle's energy recovery rate based on the cumulative output energy, the cumulative power generation energy, the cumulative discharge energy and the cumulative feeding energy of the power battery pack during the vehicle's operation.

[0061] Among them, the final output end of the vehicle's driving energy is the driving motor and the engine, and the initial input end of the vehicle's feedback energy is the driving motor. Since the driving energy of the driving motor comes from the power battery pack, the feedback energy of the driving motor is finally input into the battery pack, that is, the energy interaction of the driving motor passes through the power battery pack, and there is a certain loss in the transmission of energy between the driving motor and the power battery pack. Therefore, the energy recovery rate can be directly calculated through the accumulated discharge energy and accumulated feeding energy of the power battery pack to improve the accuracy of the energy recovery rate. It is suitable for vehicle usage conditions with high requirements for accuracy.

[0062] It can be seen that in this embodiment, the present invention provides a vehicle energy recovery rate calculation method, which receives a vehicle energy recovery rate acquisition instruction based on user needs to acquire the energy of different devices according to different acquisition instruction types, and then determines energy recovery utilization rates with different accuracies according to the energy of different devices, so that the obtained energy recovery utilization rate can meet the needs of different vehicle operating conditions, and has high adaptability and practicality.

[0063] The following will clearly and completely describe the energy recovery rate determination process under different acquisition command types according to different energy recovery rate acquisition instructions of the user and in combination with the drawings in the embodiments of the present invention. Among them, when the acquisition instruction is the first instruction, the complete technical solution of the vehicle energy recovery rate is embodiment 1; when the acquisition instruction is the second instruction, the complete technical solution of the vehicle energy recovery rate is embodiment 2.

[0064] Embodiment 1

[0065] In one embodiment, if Figure 2 As shown, a method for determining a vehicle energy recovery rate is provided. After receiving a user's instruction for obtaining a vehicle energy recovery rate, if the instruction is a first instruction, the process of determining the vehicle energy recovery rate specifically includes the following steps:

[0066] SA10: Determine the accumulated driving energy and accumulated regenerative energy of the vehicle's driving motor during vehicle operation.

[0067] During the vehicle operation from the start time to the stop time, it is necessary to collect the operating status of the drive motor on the vehicle in real time to determine the accumulated driving energy and accumulated feedback energy of the drive motor during the vehicle operation according to the real-time operating status.

[0068] SA20: Determine the cumulative output energy of the vehicle's engine during vehicle operation.

[0069] The embodiment of the present invention also needs to collect the operating status of the engine on the vehicle in real time, so as to determine the cumulative output energy of the engine during the operation of the vehicle according to the real-time operating status of the engine.

[0070] SA30: Determine the cumulative power generation energy of the vehicle's generator during vehicle operation.

[0071] The embodiment of the present invention also needs to collect the operating status of the generator on the vehicle in real time, so as to determine the cumulative power generation energy of the generator during the operation of the vehicle according to the real-time operating status of the generator.

[0072] SA40: Determine the energy recovery rate of the vehicle during vehicle operation based on the accumulated driving energy, the accumulated feedback energy, the accumulated output energy and the accumulated power generation energy.

[0073] After determining the accumulated driving energy, accumulated feedback energy, accumulated output energy and accumulated power generation energy, an energy recovery rate of the vehicle during vehicle operation is determined based on the accumulated driving energy, accumulated feedback energy, accumulated output energy and accumulated power generation energy.

[0074] In this embodiment, the operating status of the drive motor, engine and generator can be collected through the vehicle monitoring background data collection, or through the CAN box tool. After the real-time collection of the operating status of the drive motor, engine and generator, the cumulative driving energy, cumulative feedback energy, cumulative output energy and cumulative power generation energy during the vehicle operation can be directly calculated according to the host computer, and then the energy recovery rate can be determined. The acquired data is intuitive and accurate, and the calculation method is simple and easy to operate, so that the calculated energy recovery rate is more accurate.

[0075] It can be seen that in this embodiment, the present invention provides a method for calculating the energy recovery rate suitable for a hybrid vehicle. The energy recovery rate of the vehicle is determined by obtaining the energy actually consumed or generated by the vehicle's drive motor, engine and generator during the operation of the vehicle. This method can cover the energy change conditions of the vehicle under various complex operating conditions, so that the obtained vehicle energy recovery rate is more accurate.

[0076] In one embodiment, in step SA40, i.e., determining the energy recovery rate of the vehicle during vehicle operation based on the accumulated driving energy, accumulated feedback energy, accumulated output energy, and accumulated power generation energy, the energy recovery rate of the vehicle is calculated as follows:

[0077]

[0078] in, is the energy recovery rate, Q DM1 is the cumulative driving energy of the driving motor, Q DM2 is the accumulated feedback energy of the drive motor, Q E1 is the cumulative output energy of the engine, Q PM1 is the cumulative power generation energy of the generator.

[0079] For example, Figure 3 As shown in the figure, in a hybrid vehicle, the vehicle energy recovery system includes an engine E, a generator PM, a drive motor DM, a power battery pack B and a gearbox A. The energy of the whole vehicle comes from the power battery pack B and the engine E. The feedback energy of the whole vehicle passes through the gearbox A to the drive motor DM and then to the power battery pack B. The feeding energy of the power battery pack B comes from the feedback energy of the drive motor DM and the power generation energy of the generator PM. The power generation energy of the generator PM comes from the engine. Among them, the feedback energy of the whole vehicle is the feedback energy of the drive motor DM, excluding the power generation energy of the generator PM; the driving energy of the whole vehicle includes the driving energy of the drive motor DM and the driving energy of the engine, excluding the power generation energy of the engine E. Therefore, the power generation energy of the generator PM is not considered when calculating the energy recovery rate. This part of energy needs to be subtracted during the calculation process to calculate the driving energy and feedback energy of the whole vehicle, so as to obtain the energy recovery rate, and thus the energy recovery rate of the whole vehicle.

[0080] Since the working state of the engine E is relatively complex and it is possible that the engine E is in a state of driving and generating electricity simultaneously, it is relatively complex to independently calculate the driving energy of the engine E. Therefore, the cumulative output energy of the engine E in the working state (including the generating state, the driving state, and the generating and driving simultaneously) during the operation of the vehicle can be calculated, and then the cumulative generating energy of the engine can be subtracted to obtain the cumulative driving energy of the engine E. The cumulative driving energy of the engine E and the cumulative driving energy of the driving motor DM are the driving energy of the whole vehicle during the operation of the vehicle. The cumulative feedback energy of the driving motor DM is the feedback energy of the whole vehicle during the operation of the vehicle. The feedback energy of the whole vehicle is divided by the driving energy of the whole vehicle, and then multiplied by 100% to obtain the energy recovery rate of the whole vehicle. The calculation method is simple and easy to operate, and the calculated energy recovery rate is more accurate.

[0081] In one embodiment, if Figure 4As shown, step SA10, i.e. determining the accumulated driving energy and accumulated feedback energy of the driving motor of the vehicle during the operation of the vehicle, includes the following steps:

[0082] SA11: Determine the state of the drive motor according to the real-time torque of the drive motor.

[0083] During the operation of the vehicle from the start time to the stop time, it is necessary to collect the operation status of the drive motor on the vehicle in real time, that is, it is necessary to collect and record the real-time speed and real-time torque of the drive motor in real time, and record the sampling time of the drive motor speed and torque. Then, after obtaining the real-time torque of the drive motor, the state of the drive motor is determined according to the real-time torque.

[0084] If the real-time torque of the driving motor is a positive torque, the state of the driving motor is determined to be a driving state; if the real-time torque of the driving motor is a negative torque, the state of the driving motor is determined to be a feedback state.

[0085] SA12: If the state of the drive motor is the driving state, determine the real-time drive energy of the drive motor according to the real-time rotation speed and real-time torque of the drive motor in the driving state.

[0086] After determining the state of the drive motor according to the real-time torque of the drive motor, if it is determined that the state of the drive motor is the driving state, the real-time driving energy of the drive motor in the driving state is determined according to the real-time speed and real-time torque of the drive motor in the driving state and the corresponding sampling time, and the calculation formula is as follows:

[0087] ΔQ DM1 =T D1 *n D1 *t D1 / 9550;

[0088] Among them, ΔQ DM1 is the real-time driving energy of the driving motor, T D1 is the real-time torque of the driving motor in the driving state, n D1 is the real-time speed of the drive motor in the driving state; t D1 is the sampling time in the driving state.

[0089] SA13: Sum all real-time driving energies of the driving motor during vehicle operation to obtain cumulative driving energy.

[0090] After determining the real-time driving energy of the driving motor according to the real-time speed and real-time torque of the driving motor in the driving state, all the real-time driving energies of the driving motor during the vehicle operation are summed to obtain the cumulative driving energy. The calculation formula is as follows:

[0091]

[0092] Among them, Q DM1 is the accumulated driving energy of the driving motor, t1 is the starting time of the vehicle, t2 is the stopping time of the vehicle, and the period from t1 to t2 is the vehicle running period.

[0093] SA14: If the state of the drive motor is the feedback state, the real-time feedback energy of the drive motor is determined according to the real-time speed and real-time torque of the drive motor in the feedback state.

[0094] After determining the state of the drive motor according to the real-time torque of the drive motor, if it is determined that the state of the drive motor is a feedback state, the real-time feedback energy of the drive motor is determined according to the real-time speed and real-time torque of the drive motor in the feedback state and the corresponding sampling time. The calculation formula is:

[0095] ΔQ DM2 =T D2 *n D2 *t D2 / 9550;

[0096] Among them, ΔQ DM2 To drive the motor in real time, T D2 is the real-time torque of the drive motor in the feedback state, n D2 is the real-time speed of the drive motor in the feedback state; t D2 is the sampling time in the feedback state.

[0097] SA15: Sum all the real-time feedback energy of the drive motor during vehicle operation to obtain the cumulative feedback energy.

[0098] After determining the real-time feedback energy of the drive motor according to the real-time speed and real-time torque of the drive motor in the feedback state, all the real-time feedback energies of the drive motor during the vehicle operation are summed to obtain the cumulative feedback energy. The calculation formula is as follows:

[0099]

[0100] Among them, Q DM2 is the accumulated feedback energy of the driving motor, t1 is the starting time of the vehicle, and t2 is the stopping time of the vehicle.

[0101] In this embodiment, the state of the drive motor is determined according to the real-time torque of the drive motor. If the state of the drive motor is the driving state, the real-time driving energy of the drive motor is determined according to the real-time speed and real-time torque of the drive motor in the driving state, and all the real-time driving energies of the drive motor during the operation of the vehicle are summed to obtain the cumulative driving energy; if the state of the drive motor is the feedback state, the real-time feedback energy of the drive motor is determined according to the real-time speed and real-time torque of the drive motor in the feedback state, and all the real-time feedback energies of the drive motor during the operation of the vehicle are summed to obtain the cumulative feedback energy. The process of determining the cumulative driving energy and the cumulative feedback energy of the drive motor of the vehicle during the operation of the vehicle is clarified, different drive motor states are determined according to the real-time torque of the drive motor, and then the cumulative driving energy and the cumulative feedback energy of the drive motor are determined according to the real-time speed and real-time torque, so that the obtained cumulative driving energy and the cumulative feedback energy are closer to the actual working condition of the drive motor, thereby ensuring the accuracy of the data and further ensuring the accuracy of the energy recovery rate calculated subsequently.

[0102] In one embodiment, step SA20, i.e. determining the accumulated output energy of the engine of the vehicle during the operation of the vehicle, comprises the following steps:

[0103] SA21: Determine the real-time output energy of the engine based on the real-time torque and real-time speed of the engine.

[0104] The working state of the engine includes the driving state, the discharging state, and the state of driving and generating electricity simultaneously. During the operation of the vehicle, the torque of the engine in the driving state, the generating state, or the state of both being performed simultaneously is collected and recorded in real time, the speed of the engine in the driving state, the generating state, or the state of both being performed simultaneously is collected and recorded in real time, and the sampling time of the real-time torque and real-time speed of the engine is recorded, so as to calculate the real-time output energy of the engine in the working state according to the real-time torque, real-time speed and corresponding sampling time of the engine, and the calculation formula is as follows:

[0105] ΔQ E1 =T E *n E *t E / 9550;

[0106] Among them, ΔQ E1 is the real-time output energy of the engine, T E is the real-time torque of the engine, n E is the real-time speed of the engine, t E is the sampling time of the engine.

[0107] SA22: Sum all real-time output energies of the engine during vehicle operation to obtain cumulative output energy.

[0108] After obtaining the real-time output energy of the engine in the working state, all the real-time output energies of the engine during the vehicle operation are summed to obtain the cumulative output energy. The cumulative output energy calculation formula is as follows:

[0109]

[0110] Among them, Q E1 is the cumulative output energy of the engine, t1 is the start time of the vehicle, and t2 is the stop time of the vehicle.

[0111] In this embodiment, the real-time output energy of the engine is determined based on the real-time torque and real-time speed of the engine, and then all the real-time output energies of the engine during vehicle operation are summed to obtain the cumulative output energy. The steps for determining the cumulative output energy of the vehicle's engine during vehicle operation are refined, so that the obtained cumulative output energy is closer to the actual operating conditions of the engine, ensuring the accuracy of the data and further improving the accuracy of the subsequently calculated energy recovery rate.

[0112] In one embodiment, step SA30, i.e. determining the accumulated power generation energy of the generator of the vehicle during the operation of the vehicle, comprises the following steps:

[0113] SA31: Determine the real-time power generation energy of the generator based on the real-time torque and real-time speed of the generator.

[0114] During vehicle operation, the torque and speed of the generator in the power generation state are collected and recorded in real time, and the sampling time of the torque and speed of the generator is recorded, so as to calculate the real-time power generation energy of the generator in the power generation state according to the real-time torque, real-time speed and corresponding sampling time of the generator. The calculation formula is as follows:

[0115] ΔQ PM1 =T P *n P *t P / 9550;

[0116] Among them, ΔQ PM1 is the real-time power generation energy of the generator in the power generation state, T P is the real-time torque of the generator, n P is the real-time speed of the generator, t P is the sampling time of the generator.

[0117] SA32: Sum all the real-time power generation energies of the generator during vehicle operation to obtain the cumulative power generation energy.

[0118] After obtaining the real-time power generation energy of the generator in the power generation state, all the real-time power generation energies of the generator during the vehicle operation are summed to obtain the cumulative power generation energy. The cumulative power generation energy calculation formula is as follows:

[0119]

[0120] Among them, Q PM1 is the cumulative output energy of the engine, t1 is the start time of the vehicle, and t2 is the stop time of the vehicle.

[0121] In this embodiment, the real-time power generation energy of the generator is determined based on the real-time torque and real-time speed of the generator, and then all the real-time power generation energies of the generator during the operation of the vehicle are summed up to obtain the cumulative power generation energy. The steps for determining the cumulative power generation energy of the vehicle's generator during the operation of the vehicle are refined, so that the obtained cumulative power generation energy is closer to the actual working condition of the generator, ensuring the accuracy of the data and further improving the accuracy of the subsequently calculated energy recovery rate.

[0122] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0123] Embodiment 2

[0124] In one embodiment, if Figure 5 As shown, after receiving the user's instruction for obtaining the vehicle energy recovery rate, if the instruction for obtaining is the second instruction, the specific process of determining the vehicle energy recovery utilization rate includes the following steps:

[0125] SB10: Determine the cumulative output energy of the engine of the vehicle during operation of the vehicle.

[0126] During the operation of the vehicle from the start time to the stop time, it is necessary to collect the operating status of the engine on the vehicle in real time, so as to determine the cumulative output energy of the engine during the operation of the vehicle according to the real-time operating status of the engine.

[0127] SB20: Determine the cumulative power generation energy of the vehicle's generator during vehicle operation.

[0128] While collecting the operating status of the engine on the vehicle in real time, it is also necessary to collect the operating status of the generator on the vehicle in real time to determine the cumulative power generation energy of the generator during the operation of the vehicle based on the real-time operating status of the generator.

[0129] SB30: Determine the cumulative discharge energy and cumulative feeding energy of the vehicle's power battery pack during vehicle operation.

[0130] While collecting the operating status of the engine on the vehicle in real time, it is also necessary to collect the relevant status of the power battery pack on the vehicle in real time to determine the cumulative discharge energy and cumulative feeding energy of the power battery pack during the operation of the vehicle based on the relevant status of the power battery pack.

[0131] SB40: Determine the energy recovery rate of the vehicle during vehicle operation based on the accumulated output energy, accumulated power generation energy, accumulated discharge energy and accumulated power feeding energy.

[0132] After obtaining the meter output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated power feeding energy, the energy recovery rate of the vehicle during the vehicle operation is determined according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated power feeding energy.

[0133] The final output end of the vehicle's driving energy is the driving motor and the engine, and the initial input end of the vehicle's feedback energy is the driving motor. Since the driving energy of the driving motor comes from the power battery pack, the feedback energy of the driving motor is ultimately input into the battery pack, that is, the energy interaction of the driving motor passes through the power battery pack, and there is a certain loss in the transmission of energy between the driving motor and the power battery pack. Therefore, the energy recovery rate can be directly calculated through the accumulated discharge energy and accumulated feeding energy of the power battery pack to improve the accuracy of the energy recovery rate.

[0134] In addition, the operating status of the engine and generator, as well as the relevant status of the power battery pack can be collected through the vehicle monitoring background data collection, or through the CAN box tool. After real-time collection of the relevant status of the power battery pack, as well as the operating status of the engine and generator, the cumulative output energy, cumulative power generation energy, cumulative discharge energy and cumulative power feeding energy during the vehicle operation can be directly calculated according to the host computer, and then the energy recovery rate of the vehicle can be determined. This calculation method is simple and easy to operate.

[0135] In this embodiment, the cumulative output energy of the vehicle's engine during the operation of the vehicle is determined, and the cumulative power generation energy of the vehicle's generator during the operation of the vehicle is determined, and then the cumulative discharge energy and cumulative feeding energy of the vehicle's power battery pack during the operation of the vehicle are determined, and then the energy recovery rate of the vehicle during the operation of the vehicle is determined based on the cumulative discharge energy, the cumulative feeding energy, the cumulative output energy and the cumulative power generation energy; the present invention provides an energy recovery rate calculation method suitable for hybrid vehicles, by obtaining the energy actually consumed or generated by the vehicle's power battery pack, engine and generator during the operation of the vehicle, so as to determine the energy recovery rate of the vehicle, which can cover the energy change conditions of the vehicle under various complex working conditions, and further improve the accuracy of the vehicle's energy recovery rate.

[0136] In one embodiment, in step SB40, i.e., determining the energy recovery rate of the vehicle during vehicle operation based on the accumulated output energy, accumulated power generation energy, accumulated discharge energy, and accumulated power feeding energy, the energy recovery rate of the vehicle is calculated as follows:

[0137]

[0138] in, is the energy recovery rate, Q B1 is the cumulative discharge energy of the power battery pack, Q B2 is the cumulative power supply energy of the power battery pack, Q E1 is the cumulative output energy of the engine, Q PM1 is the cumulative power generation energy of the generator.

[0139] The working state of the engine is relatively complex. It is possible that the engine is in a state of driving and generating electricity at the same time. It is relatively complex to independently calculate the engine driving energy. The cumulative output energy of the engine in the working state (including the generating state, driving state, and the generating and driving state) during the operation of the vehicle can be calculated, and then the cumulative generating energy of the engine can be subtracted to obtain the cumulative driving energy of the engine. At the same time, since the driving energy of the driving motor comes from the power battery pack, the feedback energy of the driving motor is finally input into the power battery pack. Therefore, the cumulative driving energy of the engine and the cumulative discharge energy of the power battery pack are the driving energy of the whole vehicle during the operation of the vehicle, and the cumulative feeding energy of the power battery pack is the feedback energy of the whole vehicle during the operation of the vehicle. The feedback energy of the whole vehicle is divided by the driving energy of the whole vehicle, and then multiplied by 100% to obtain the energy recovery rate of the whole vehicle.

[0140] In this embodiment, after accumulating output energy, accumulated power generation energy, accumulated discharge energy and accumulated power feeding energy, the energy recovery rate of the vehicle is directly determined by a calculation formula. The calculation method is simple and fast, which improves the speed of obtaining the energy recovery rate.

[0141] In one embodiment, step SB30, i.e. determining the accumulated discharge energy and accumulated feeding energy of the power battery pack of the vehicle during the operation of the vehicle, specifically includes the following steps:

[0142] SB31: Determine the status of the power battery pack based on the current of the power battery pack.

[0143] During the operation of the vehicle from the start-up moment to the stop moment, it is necessary to collect and record the real-time voltage and real-time current of the drive motor in real time, and record the sampling time of the voltage and current of the power battery pack. After obtaining the real-time current of the power battery pack, the state of the power battery pack is determined according to the real-time current of the power battery pack. Among them, if the real-time current of the power battery pack is positive, the state of the power battery pack is the discharge state; if the real-time current of the power battery pack is negative, the state of the power battery pack is the feeding state.

[0144] SB32: If the state of the power battery pack is a discharge state, the real-time discharge energy of the power battery pack is determined according to the voltage and current of the power battery pack in the discharge state.

[0145] After determining the state of the power battery pack according to the current of the power battery pack, if it is determined that the state of the power battery pack is a discharge state, the real-time discharge energy of the power battery pack is determined according to the voltage and current of the power battery pack in the discharge state and the corresponding sampling time. The calculation formula is:

[0146] ΔQ B1 =U B1 *I B1 *t B1 ;

[0147] Among them, ΔQ B1 is the real-time discharge energy of the power battery pack, U B1 is the voltage of the power battery pack in the discharge state, I B1 is the current of the power battery pack in the discharge state; t B1 is the sampling time in the discharge state.

[0148] SB33: Sum all real-time discharge energies of the power battery pack during vehicle operation to obtain the cumulative discharge energy.

[0149] After determining the real-time discharge energy of the power battery pack according to the voltage and current of the power battery pack in the discharge state, all the real-time discharge energies of the power battery pack during the operation of the vehicle are summed to obtain the cumulative discharge energy. The calculation formula is as follows:

[0150]

[0151] Among them, Q B1 is the accumulated discharge energy of the power battery pack, t1 is the start time of the vehicle, t2 is the stop time of the vehicle, and the period from t1 to t2 is the vehicle operation period.

[0152] SB34: If the state of the power battery pack is the feeding state, the real-time feeding energy of the power battery pack is determined according to the voltage and current of the power battery pack in the feeding state.

[0153] After determining the state of the power battery pack according to the current of the power battery pack, if it is determined that the state of the power battery pack is the feeding state, the real-time feeding energy of the power battery pack is determined according to the voltage and current of the power battery pack in the feeding state and the corresponding sampling time, and the calculation formula is:

[0154] ΔQ B2 =U B2 *I B2 *t B2 ;

[0155] Among them, ΔQ B2 Real-time power supply for the power battery pack, U B2 is the voltage of the power battery pack in the feeding state, I B2 is the current when the power is fed by the battery pack; t B2 is the sampling time in the feeding state.

[0156] SB35: Sum all the real-time feedback energy of the power battery pack during vehicle operation to obtain the cumulative feeding energy.

[0157] After determining the real-time feeding energy of the power battery pack according to the voltage and current of the power battery pack in the feeding state, all the real-time feeding energies of the power battery pack during the operation of the vehicle are summed to obtain the cumulative feeding energy. The calculation formula is as follows:

[0158]

[0159] Among them, Q B2 is the accumulated power supply energy of the power battery pack, t1 is the start time of the vehicle, and t2 is the stop time of the vehicle.

[0160] In this embodiment, the state of the power battery pack is determined according to the current of the power battery pack. If the state of the power battery pack is a discharging state, the real-time discharge energy of the power battery pack is determined according to the voltage and current of the power battery pack in the discharging state, and all real-time discharge energies of the power battery pack during the operation of the vehicle are summed to obtain the cumulative discharge energy. If the state of the power battery pack is a feeding state, the real-time feeding energy of the power battery pack is determined according to the voltage and current of the power battery pack in the feeding state, and all real-time feedback energies of the power battery pack during the operation of the vehicle are summed to obtain the cumulative feeding energy. The steps for determining the cumulative discharge energy and the cumulative feeding energy of the power battery pack of the vehicle during the operation of the vehicle are clarified. By obtaining the voltage and current of the power battery pack, the obtained cumulative discharge energy and cumulative feeding energy are closer to the actual operating conditions of the power battery pack, thereby ensuring the accuracy of the data and further ensuring the accuracy of the energy recovery rate obtained by subsequent calculation.

[0161] In one embodiment, step SB10, i.e. determining the accumulated output energy of the engine of the vehicle during the operation of the vehicle, comprises the following steps:

[0162] SB11: Determine the real-time output energy of the engine based on the real-time torque and real-time speed of the engine.

[0163] The working state of the engine includes a driving state, a discharging state, and a state in which driving and generating electricity are performed simultaneously. During the operation of the vehicle, the torque of the engine in the driving state, the generating state, or the state in which both are performed simultaneously is collected and recorded in real time, the speed of the engine in the driving state, the generating state, or the state in which both are performed simultaneously is collected and recorded in real time, and the sampling time of the real-time torque and real-time speed of the engine is recorded, so as to calculate the real-time output energy of the engine in the working state according to the real-time torque, real-time speed and corresponding sampling time of the engine. The calculation formula is as follows:

[0164] ΔQ E1 =T E *n E *t E / 9550;

[0165] Among them, ΔQ E1 is the real-time output energy of the engine, T E is the real-time torque of the engine, n E is the real-time speed of the engine, t E is the sampling time of the engine.

[0166] SB12: Sum all real-time output energies of the engine during vehicle operation to obtain the cumulative output energy.

[0167] After obtaining the real-time output energy of the engine in the working state, all the real-time output energies of the engine during the vehicle operation are summed to obtain the cumulative output energy. The cumulative output energy calculation formula is as follows:

[0168]

[0169] Among them, Q E1 is the cumulative output energy of the engine, t1 is the start time of the vehicle, and t2 is the stop time of the vehicle.

[0170] In this embodiment, the real-time output energy of the engine is determined based on the real-time torque and real-time speed of the engine, and then all the real-time output energies of the engine during vehicle operation are summed to obtain the cumulative output energy. The steps for determining the cumulative output energy of the vehicle's engine during vehicle operation are refined, so that the obtained cumulative output energy is closer to the actual operating conditions of the engine, ensuring the accuracy of the data and further improving the accuracy of the subsequently calculated energy recovery rate.

[0171] In one embodiment, step SB20, i.e. determining the accumulated power generation energy of the generator of the vehicle during the operation of the vehicle, comprises the following steps:

[0172] SB21: Determine the real-time power generation energy of the generator based on the real-time torque and real-time speed of the generator.

[0173] During vehicle operation, the torque and speed of the generator in the power generation state are collected and recorded in real time, and the sampling time of the real-time torque and real-time speed of the generator is recorded, so as to calculate the real-time power generation energy of the generator in the power generation state according to the real-time torque, real-time speed and corresponding sampling time of the generator. The calculation formula is as follows:

[0174] ΔQ PM1 =T P *n P *t P / 9550;

[0175] Among them, ΔQ PM1 is the real-time power generation energy of the generator in the power generation state, T P is the real-time torque of the generator, n P is the real-time speed of the generator, t P is the sampling time of the generator.

[0176] SB22: Sum all real-time power generation energies of the generator during vehicle operation to obtain cumulative power generation energy.

[0177] After obtaining the real-time power generation energy of the generator in the power generation state, all the real-time power generation energies of the generator during the vehicle operation are summed to obtain the cumulative power generation energy. The cumulative power generation energy calculation formula is as follows:

[0178]

[0179] Among them, Q PM1 is the cumulative output energy of the engine, t1 is the start time of the vehicle, and t2 is the stop time of the vehicle.

[0180] In this embodiment, the real-time power generation energy of the generator is determined based on the real-time torque and real-time speed of the generator, and then all the real-time power generation energies of the generator during the operation of the vehicle are summed up to obtain the cumulative power generation energy. The steps for determining the cumulative power generation energy of the vehicle's generator during the operation of the vehicle are refined, so that the obtained cumulative power generation energy is closer to the actual working condition of the generator, ensuring the accuracy of the data and further improving the accuracy of the subsequently calculated energy recovery rate.

[0181] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0182] In one embodiment, a vehicle energy recovery rate determination device is provided, and the vehicle energy recovery rate determination device corresponds one-to-one to the vehicle energy recovery rate determination method in the above-mentioned embodiment 1. Figure 6 As shown, the vehicle energy recovery rate determination device includes a receiving module 601, a first determination module 602, a second determination module 603 and a third determination module 604. Each functional module is described in detail as follows:

[0183] The receiving module 601 is used to receive a user's instruction for obtaining the energy recovery rate of the vehicle;

[0184] A first determination module 602 is used to determine the cumulative output energy of the engine during the operation of the vehicle, and to determine the cumulative power generation energy of the generator during the operation of the vehicle;

[0185] A second determination module 603 is used to determine the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the driving motor during the operation of the vehicle, and the accumulated feedback energy if the acquisition instruction is the first instruction;

[0186] The third determination module 604 is used to determine the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feeding energy of the power battery pack during the operation of the vehicle if the acquisition instruction is the second instruction.

[0187] Further, if the acquisition instruction is the first instruction, the second determination module 602 calculates the energy recovery rate of the vehicle by the following calculation formula:

[0188]

[0189] in, is the energy recovery rate, Q DM1 is the cumulative driving energy, Q DM2is the accumulated feedback energy, Q E1 is the cumulative output energy, Q PM1 is the accumulated power generation energy.

[0190] Further, if the acquisition instruction is the first instruction, the third determination module 603 calculates the energy recovery rate of the vehicle by the following calculation formula:

[0191]

[0192] in, is the energy recovery rate, Q B1 is the cumulative discharge energy, Q B2 is the cumulative feeding energy, Q E1 is the cumulative output energy, Q PM1 is the accumulated power generation energy.

[0193] Further, the first determining module 602 is specifically configured to:

[0194] Determining the real-time output energy of the engine according to the real-time torque and real-time speed of the engine;

[0195] All real-time output energies of the engine during the operation of the vehicle are summed to obtain the accumulated output energy.

[0196] Furthermore, the first determining module 602 is further configured to:

[0197] Determine the real-time power generation energy of the generator according to the real-time torque and real-time speed of the generator;

[0198] All real-time power generation energies of the generator during the operation of the vehicle are summed to obtain the accumulated power generation energy.

[0199] Furthermore, before determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the drive motor during the operation of the vehicle, and the accumulated feedback energy, the first determining module 602 is further specifically used to:

[0200] Determine the state of the drive motor according to the real-time torque of the drive motor;

[0201] If the state of the drive motor is the driving state, determining the real-time driving energy of the drive motor according to the real-time speed and real-time torque of the drive motor in the driving state, and summing all the real-time driving energies of the drive motor during the operation of the vehicle to obtain the accumulated driving energy;

[0202] If the state of the drive motor is a feedback state, the real-time feedback energy of the drive motor is determined according to the real-time speed and real-time torque of the drive motor in the feedback state, and all real-time feedback energies of the drive motor during the operation of the vehicle are summed to obtain the accumulated feedback energy.

[0203] Furthermore, before determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feed energy of the power battery pack during the operation of the vehicle, the first determination module 602 is further specifically used to:

[0204] Determining a state of the power battery pack according to the current of the power battery pack;

[0205] If the state of the power battery pack is a discharge state, determining the real-time discharge energy of the power battery pack according to the voltage and current of the power battery pack in the discharge state, and summing all the real-time discharge energies of the power battery pack during the operation of the vehicle to obtain the accumulated discharge energy;

[0206] If the power battery pack is in a feeding state, the real-time feeding energy of the power battery pack is determined according to the voltage and current of the power battery pack in the feeding state, and all real-time feedback energies of the power battery pack during the operation of the vehicle are summed to obtain the accumulated feeding energy.

[0207] For the specific definition of the vehicle energy recovery rate determination device, please refer to the definition of the vehicle energy recovery rate determination method in the above embodiment 2, which will not be repeated here. Each module in the above-mentioned vehicle energy recovery rate determination device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the vehicle energy recovery rate determination device in the form of hardware, or can be stored in the memory in the vehicle energy recovery rate determination device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0208] In one embodiment, a vehicle energy recovery rate determination device is provided, the vehicle energy recovery rate determination device includes a processor and a memory connected through a system bus. The processor of the vehicle energy recovery rate determination device is used to provide computing and control capabilities. The memory of the vehicle energy recovery rate determination device includes a storage medium and an internal memory. The storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the storage medium. When the computer program is executed by the processor, a vehicle energy recovery rate determination method is implemented.

[0209] In one embodiment, Figure 7As shown, a vehicle energy recovery rate determination device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above-mentioned vehicle energy recovery rate determination method are implemented.

[0210] In one embodiment, a readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned vehicle energy recovery rate determination method are implemented.

[0211] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory.

[0212] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0213] In one embodiment, a vehicle is provided, the vehicle comprising the above-mentioned vehicle energy recovery rate determination device.

[0214] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for determining a vehicle energy recovery rate, characterized in that: include: receiving a user's instruction for obtaining the energy recovery rate of the vehicle; determining a cumulative output energy of the engine during operation of the vehicle, and determining a cumulative power generation energy of the generator during operation of the vehicle; If the acquisition instruction is a first instruction, determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the driving motor during the operation of the vehicle, and the accumulated feedback energy; If the acquisition instruction is a second instruction, determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feed energy of the power battery pack during the operation of the vehicle; If the acquisition instruction is the first instruction, the calculation formula of the energy recovery rate of the vehicle is: ； in, is the energy recovery rate, is the accumulated driving energy, is the accumulated feedback energy, is the cumulative output energy, is the accumulated power generation energy; If the acquisition instruction is the second instruction, the calculation formula of the energy recovery rate of the vehicle is: ； in, is the energy recovery rate, is the accumulated discharge energy, is the accumulated feeding energy, is the cumulative output energy, is the accumulated power generation energy.

2. The method for determining the vehicle energy recovery rate according to claim 1, characterized in that: The step of determining the accumulated output energy of the engine during the operation of the vehicle comprises: Determining the real-time output energy of the engine according to the real-time torque and real-time speed of the engine; All real-time output energies of the engine during the operation of the vehicle are summed to obtain the accumulated output energy.

3. The method for determining the vehicle energy recovery rate according to claim 1, characterized in that: The determining of the accumulated power generation energy of the generator during the operation of the vehicle comprises: Determine the real-time power generation energy of the generator according to the real-time torque and real-time speed of the generator; All real-time power generation energies of the generator during the operation of the vehicle are summed to obtain the accumulated power generation energy.

4. The method for determining the vehicle energy recovery rate according to any one of claims 1 to 3, characterized in that: Before determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the drive motor during the operation of the vehicle, and the accumulated feedback energy, the method further includes: Determine the state of the drive motor according to the real-time torque of the drive motor; If the state of the drive motor is the driving state, determining the real-time driving energy of the drive motor according to the real-time speed and real-time torque of the drive motor in the driving state, and summing all the real-time driving energies of the drive motor during the operation of the vehicle to obtain the accumulated driving energy; If the state of the drive motor is a feedback state, the real-time feedback energy of the drive motor is determined according to the real-time speed and real-time torque of the drive motor in the feedback state, and all real-time feedback energies of the drive motor during the operation of the vehicle are summed to obtain the accumulated feedback energy.

5. The method for determining the vehicle energy recovery rate according to any one of claims 1 to 3, characterized in that: Before determining the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feed energy of the power battery pack during the operation of the vehicle, the method further includes: Determining a state of the power battery pack according to the current of the power battery pack; If the state of the power battery pack is a discharge state, determining the real-time discharge energy of the power battery pack according to the voltage and current of the power battery pack in the discharge state, and summing all the real-time discharge energies of the power battery pack during the operation of the vehicle to obtain the accumulated discharge energy; If the power battery pack is in a feeding state, the real-time feeding energy of the power battery pack is determined according to the voltage and current of the power battery pack in the feeding state, and all real-time feedback energies of the power battery pack during the operation of the vehicle are summed to obtain the accumulated feeding energy.

6. A vehicle energy recovery rate determination device, characterized in that: include: A receiving module, used for receiving a user's instruction for obtaining the energy recovery rate of the vehicle; a first determination module, for determining a cumulative output energy of the engine during operation of the vehicle, and determining a cumulative power generation energy of the generator during operation of the vehicle; a second determination module, configured to determine the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated driving energy of the driving motor during the operation of the vehicle, and the accumulated feedback energy if the acquisition instruction is the first instruction; a third determination module, configured to determine the energy recovery rate of the vehicle according to the accumulated output energy, the accumulated power generation energy, the accumulated discharge energy and the accumulated feed energy of the power battery pack during the operation of the vehicle if the acquisition instruction is the second instruction; If the acquisition instruction is the first instruction, the calculation formula of the energy recovery rate of the vehicle is: ； in, is the energy recovery rate, is the accumulated driving energy, is the accumulated feedback energy, is the cumulative output energy, is the accumulated power generation energy; If the acquisition instruction is the second instruction, the calculation formula of the energy recovery rate of the vehicle is: ； in, is the energy recovery rate, is the accumulated discharge energy, is the accumulated feeding energy, is the cumulative output energy, is the accumulated power generation energy.

7. A readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the vehicle energy recovery rate determination method according to any one of claims 1 to 5 are implemented.

8. A vehicle, characterized in that: The vehicle includes the vehicle energy recovery rate determination device according to claim 6.

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