Vehicle energy management control method and device, vehicle, storage medium and product

Abstract

The invention relates to the technical field of vehicle control, in particular to a vehicle energy management control method and device, a vehicle, a storage medium and a product. The method comprises: determining whether a current vehicle activates an energy management mode; if the current vehicle activates the energy management mode, the current driving cycle period health degree of the current vehicle is obtained, and the current battery state is determined according to the current driving cycle period health degree; and determining the backup electric quantity of the power battery and an energy management strategy of the current vehicle according to the current battery state, and performing energy management on the vehicle according to the backup electric quantity and the energy management strategy. Therefore, by adjusting the backup energy storage of the power battery and optimizing the start-stop strategy of the engine according to the total driving mileage of the vehicle or the health state of the power battery, self-adaptive adjustment according to energy management in the life cycle of the whole vehicle is realized, the service life of the power battery is prolonged, and the user experience is improved.

Description

Technical Field

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

[0002] Electric vehicle energy management refers to the process of achieving the best energy flow between energy conversion devices (such as engines, motors, energy storage devices, power conversion modules, power transmission devices, generators and fuel cells, etc.) based on the characteristics of each component and the operating conditions of the vehicle, while meeting the basic technical performance (such as power, driving stability, etc.) and cost requirements of the vehicle, so as to maximize the energy utilization efficiency of the entire vehicle.

[0003] In the related art, the operating condition of a vehicle during driving is usually determined based on the vehicle's SOC (State of Charge), and a corresponding energy management strategy is matched according to the vehicle's operating condition.

[0004] However, the above technical solutions are usually executed based on preset strategies and will not be adaptively adjusted according to the life cycle of the vehicle. The health of the battery will decrease as the usage time increases. Power batteries with different health levels can release different amounts of energy at the same power level. If adaptive adjustments cannot be made in real time based on the health of the battery, the engine will start and stop frequently when the battery health is low, which will have an adverse effect on the engine's economy and NVH (Noise-Vibration-Harshness) performance, and will greatly reduce the user experience. Summary of the invention

[0005] The present invention provides a vehicle energy management control method, device, vehicle, storage medium and product to solve the problem in the related art that there is a lack of adaptive adjustment of the vehicle energy management strategy according to the battery health. By adjusting the power battery backup energy storage according to the total mileage of the vehicle or the health status of the power battery, optimizing the engine start-stop strategy, adaptive adjustment of energy management within the life cycle of the vehicle is achieved, the power battery life is extended, and the user experience is improved.

[0006] To achieve the above object, a first embodiment of the present invention provides a vehicle energy management control method, comprising the following steps:

[0007] Determine whether the energy management mode is activated for the current vehicle;

[0008] If the energy management mode is activated for the current vehicle, obtaining a current driving cycle health of the current vehicle, and determining a current battery state according to the current driving cycle health;

[0009] The backup power of the power battery and the energy management strategy of the current vehicle are determined according to the current battery state, and energy management of the vehicle is performed according to the backup power and the energy management strategy.

[0010] According to an embodiment of the present invention, determining the current battery state according to the current driving cycle health includes:

[0011] If the current driving cycle health is within a first preset threshold range, determining that the current battery state is an unhealthy state;

[0012] If the current driving cycle health is within a second preset threshold interval, determining that the current battery state is a decay state, wherein a lower limit value of the second preset threshold interval is greater than an upper limit value of the first preset threshold interval;

[0013] If the health of the current driving cycle is in a third preset threshold interval, the current battery state is determined to be a healthy state, wherein a lower limit value of the third preset threshold interval is greater than an upper limit value of the second preset threshold interval.

[0014] According to one embodiment of the present invention, determining the reserve power of the power battery and the energy management strategy of the current vehicle according to the current battery state, and performing energy management on the vehicle according to the reserve power and the energy management strategy, includes:

[0015] If the current battery state is the unhealthy state, the first preset reserve power threshold interval is used as the reserve power, and the power generation of the engine is reduced according to the preset reduction strategy, and the engine start-stop SOC interval for low-power driving is adjusted to the first preset interval, and the starting drag power of the engine is reduced to the first target power;

[0016] If the current battery state is the attenuation state, the second preset reserve power threshold interval is used as the reserve power, the engine start-stop SOC interval of the low-power driving is adjusted to the second preset interval, and the engine start-up drag power is reduced to the second target power;

[0017] If the current battery state is the healthy state, the third preset reserve power threshold interval is used as the reserve power, and the power generation of the engine is increased according to a preset increase strategy.

[0018] According to an embodiment of the present invention, the determining whether the current vehicle activates the energy management mode includes:

[0019] Obtaining the number of consecutive times that the total mileage of the current vehicle and the health difference of adjacent driving cycle periods are greater than a preset threshold;

[0020] If the total mileage is greater than a preset mileage, or the consecutive times are greater than a preset times, it is determined that the current vehicle activates the energy management mode; otherwise, it is determined that the current vehicle does not activate the energy management mode.

[0021] According to one embodiment of the present invention, after determining the target state and the current state of the vehicle according to the current accelerator pedal opening and the current actual wheel end torque, the method further includes:

[0022] If the current state is the recovery state and the target state is the driving state, then when the current wheel-end actual torque is in a preset positive zero-crossing interval, the second target motor torque is obtained according to the motor speed change rate, the motor actual torque and the driver's required torque, and the motor is torque controlled according to the second target motor torque.

[0023] According to an embodiment of the present invention, the determining whether the current vehicle activates the energy management mode includes:

[0024] Obtaining the BMS communication status of the current vehicle;

[0025] If the BMS communication status is a fault state, the energy management mode is not activated.

[0026] According to the vehicle energy management control method proposed in the embodiment of the present invention, whether to activate the energy management mode is determined by the historical driving data of the vehicle, and when the energy management mode is activated, the current battery health state is determined, the current battery state of the vehicle is determined according to the different threshold intervals of the battery health, and the corresponding energy management strategy is matched to perform energy management on the vehicle. Therefore, by adjusting the power battery backup energy storage according to the total mileage of the vehicle or the power battery health state, optimizing the engine start-stop strategy, and realizing adaptive adjustment of energy management according to the life cycle of the vehicle, the power battery life is extended, and the user experience is improved.

[0027] To achieve the above object, a second embodiment of the present invention provides an energy management control device for a vehicle, comprising:

[0028] An activation module is used to determine whether the energy management mode is activated in the current vehicle;

[0029] a determination module, configured to obtain a current driving cycle health of the current vehicle when the energy management mode is activated by the current vehicle, and determine a current battery state according to the current driving cycle health;

[0030] The correction module is used to determine the reserve power of the power battery and the energy management strategy of the current vehicle according to the current battery state, and perform energy management on the vehicle according to the reserve power and the energy management strategy.

[0031] According to an embodiment of the present invention, the determining module is specifically configured to:

[0032] When the health of the current driving cycle is within a first preset threshold range, determining that the current battery state is an unhealthy state;

[0033] When the current driving cycle health is in a second preset threshold interval, determining that the current battery state is a decay state, wherein a lower limit value of the second preset threshold interval is greater than an upper limit value of the first preset threshold interval;

[0034] When the health of the current driving cycle is within a third preset threshold interval, the current battery state is determined to be a healthy state, wherein a lower limit value of the third preset threshold interval is greater than an upper limit value of the second preset threshold interval.

[0035] According to one embodiment of the present invention, the correction module is specifically used to:

[0036] When the current battery state is the unhealthy state, the first preset reserve power threshold interval is used as the reserve power, and the power generation of the engine is reduced according to the preset reduction strategy, and the engine start-stop SOC interval for low-power driving is adjusted to the first preset interval, and the starting drag power of the engine is reduced to the first target power;

[0037] When the current battery state is the attenuation state, a second preset reserve power threshold interval is used as the reserve power, the engine start-stop SOC interval for low-power driving is adjusted to the second preset interval, and the engine start-up drag power is reduced to a second target power;

[0038] When the current battery state is the healthy state, the third preset backup power threshold interval is used as the backup power, and the power generation of the engine is increased according to a preset increase strategy.

[0039] According to one embodiment of the present invention, the activation module is specifically used to:

[0040] Obtaining the number of consecutive times that the total mileage of the current vehicle and the health difference of adjacent driving cycle periods are greater than a preset threshold;

[0041] If the total mileage is greater than a preset mileage, or the consecutive times are greater than a preset times, it is determined that the current vehicle activates the energy management mode; otherwise, it is determined that the current vehicle does not activate the energy management mode.

[0042] According to one embodiment of the present invention, the activation module is specifically used to:

[0043] Obtaining the BMS communication status of the current vehicle;

[0044] If the BMS communication status is a fault state, the energy management mode is not activated.

[0045] According to the energy management control device of the vehicle proposed in the embodiment of the present invention, the energy management mode is determined based on the historical travel data of the vehicle, and when the energy management mode is activated, the current battery health state is determined, the current battery state of the vehicle is determined according to the different threshold intervals of the battery health, and the corresponding energy management strategy is matched to perform energy management on the vehicle. Therefore, by adjusting the power battery backup energy storage according to the total mileage of the vehicle or the power battery health state, optimizing the engine start-stop strategy, and realizing adaptive adjustment of energy management according to the life cycle of the vehicle, the power battery life is extended, and the user experience is improved.

[0046] To achieve the above objectives, a third aspect of the present invention proposes a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the energy management control method for the vehicle as described in the above embodiments.

[0047] To achieve the above objectives, a fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the vehicle energy management control method as described in the above embodiments.

[0048] To achieve the above objectives, a fifth aspect of the present invention proposes a computer program product, including a computer program, which, when executed by a processor, is used to implement the vehicle energy management control method as described in the above embodiments.

[0049] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0051] Figure 1A flow chart of a vehicle energy management control method provided by one embodiment of the present invention;

[0052] Figure 2 A diagram showing the device architecture of a vehicle energy management control method provided according to a specific embodiment of the present invention;

[0053] Figure 3 A flowchart of a vehicle energy management control method according to a specific embodiment of the present invention;

[0054] Figure 4 A block diagram of an energy management control device for a vehicle according to an embodiment of the present invention;

[0055] Figure 5 It is a schematic diagram of the structure of a vehicle provided according to an embodiment of the present invention.

[0056] Figure annotation:

[0057] 10-device of vehicle energy management control method, 11-assembly information acquisition module, 12-energy management correction module, 13-storage module, 20-vehicle energy management control device, 100-activation module, 200-determination module, 300-correction module, 501-memory, 502-processor, 503-communication interface. DETAILED DESCRIPTION

[0058] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0059] The following describes a vehicle energy management control method, device, vehicle, storage medium and product according to an embodiment of the present invention with reference to the accompanying drawings. First, the vehicle energy management control method according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0060] Figure 1 It is a flow chart of a vehicle energy management control method provided by an embodiment of the present invention.

[0061] like Figure 1 As shown, the vehicle energy management control method includes the following steps:

[0062] In step S101 , it is determined whether the energy management mode of the current vehicle is activated.

[0063] Among them, the energy management mode refers to the mode of controlling the energy management system of the whole vehicle according to the energy management strategy.

[0064] Specifically, as the vehicle's power battery gradually wears out over time, the power battery's output will gradually decrease, and the health of the power battery will also gradually decrease. On the contrary, when the power battery is newer, the power battery can fully output power, so there is no need for the energy management system to manage the energy of different components of the vehicle, and there is no need to activate the energy management mode.

[0065] As a possible implementation method, in some embodiments, determining whether the energy management mode is activated for the current vehicle includes: obtaining the total mileage of the current vehicle and the number of consecutive times that the difference in health of adjacent driving cycles is greater than a preset threshold; if the total mileage is greater than the preset mileage, or the number of consecutive times is greater than the preset number, determining that the energy management mode is activated for the current vehicle, otherwise, determining that the energy management mode is not activated for the current vehicle.

[0066] Among them, the preset threshold, preset number of times and preset mileage can be values ​​set by technical personnel in this field according to needs, or can be values ​​obtained through a limited number of computer simulations, and are not specifically limited here.

[0067] Specifically, a driving cycle refers to a cycle in which a vehicle completes a complete driving journey. For example, the journey starts at the moment of vehicle ignition and ends at the adjacent moment of ignition shutdown, and ignition-shutdown forms a driving cycle. The embodiment of the present invention can obtain the total mileage of the vehicle and the health of multiple driving cycles, calculate the difference between the health of each adjacent driving cycle, and count the consecutive times that the difference in health of adjacent driving cycles is greater than a preset threshold. When the total mileage is greater than the preset mileage, or the consecutive times that the difference in health of adjacent driving cycles is greater than the preset threshold is greater than the preset number, the energy management mode is activated; if the total mileage is less than or equal to the preset mileage and the consecutive times that the difference in health of adjacent driving cycles is greater than the preset threshold is less than or equal to the preset number, the energy management mode is not activated.

[0068] For example, the preset threshold is set to 10%, the preset number of times is set to 5 times, and the preset mileage is set to 15 km. When the total mileage of the vehicle is greater than 15 km, the energy management mode is activated; or when the difference between the health of the current driving cycle and the health of the previous driving cycle exceeds 10% for 6 consecutive times, the energy management mode is activated.

[0069] It should be noted that if the health of the power battery increases, it is determined that the power battery needs to be replaced. At this time, the control strategy needs to be reset, the energy management mode needs to be reactivated, and the health of the driving cycle needs to be re-identified.

[0070] Optionally, in some embodiments, determining whether the energy management mode is activated for the current vehicle includes: obtaining a BMS communication status of the current vehicle; if the BMS communication status is a fault state, then the energy management mode is not activated.

[0071] Specifically, BMS (Battery Management System) is an important component for obtaining battery SOC and calculating SOH (State of Health). When BMS has a communication failure, misjudgment may occur. Therefore, the embodiment of the present invention determines whether the energy management mode needs to be activated by obtaining the BMS communication status of the vehicle. When the BMS communication status is a fault state, the energy management mode is not activated.

[0072] In step S102, if the energy management mode is activated for the current vehicle, the current driving cycle health of the current vehicle is obtained, and the current battery state is determined according to the current driving cycle health.

[0073] Specifically, when the vehicle is in the activated energy management mode, the embodiment of the present invention can calculate the SOH of the current power battery by obtaining relevant parameters of the battery, and use the SOH of the current power battery as the health of the current driving cycle, wherein the SOH is affected by two factors, the battery internal resistance and the battery capacity. The formula for calculating the SOH from the battery internal resistance is as follows:

[0074]

[0075] Among them, R EOL is the internal resistance of the battery at the end of its life, R BOL is the internal resistance of the battery when it leaves the factory, and R is the internal resistance of the battery in the current state.

[0076] In addition, another formula for calculating SOH from battery capacity is as follows:

[0077]

[0078] Among them, C EOL is the battery capacity at the end of battery life, C BOL is the battery capacity when it leaves the factory, and C is the battery capacity in the current state.

[0079] At the same time, the embodiment of the present invention can set different threshold intervals, and the threshold intervals correspond to the battery status. If the health of the current driving cycle is within a certain threshold interval, the current battery status is determined to be the battery status corresponding to the threshold interval.

[0080] As a possible implementation method, in some embodiments, the current battery state is determined based on the health of the current driving cycle, including: if the health of the current driving cycle is in a first preset threshold interval, the current battery state is determined to be an unhealthy state; if the health of the current driving cycle is in a second preset threshold interval, the current battery state is determined to be a decayed state, wherein the lower limit value of the second preset threshold interval is greater than the upper limit value of the first preset threshold interval; if the health of the current driving cycle is in a third preset threshold interval, the current battery state is determined to be a healthy state, wherein the lower limit value of the third preset threshold interval is greater than the upper limit value of the second preset threshold interval.

[0081] Among them, the first preset threshold interval, the second preset threshold interval and the third preset threshold interval can be intervals set by technical personnel in this field according to requirements, or can be intervals obtained through a limited number of computer simulations, and are not specifically limited here.

[0082] Specifically, an embodiment of the present invention can preset three battery states corresponding to different ranges, namely, an unhealthy state, a decay state and a healthy state, wherein the lower limit value of the preset threshold interval corresponding to the decay state is greater than the upper limit value of the preset threshold interval corresponding to the unhealthy state, and the upper limit value of the preset threshold interval corresponding to the decay state is less than the lower limit value of the preset threshold interval corresponding to the healthy state, that is, the interval of the decay state is between the interval of the unhealthy state and the interval of the healthy state.

[0083] For example, the embodiment of the present invention can set the first preset threshold area to 0%-80%, the second preset threshold area to 81%-90%, and the third preset threshold area to 91%-100%. When the SOH is between 0%-80%, the current battery state is determined to be unhealthy; when the SOH is between 81%-90%, the current battery state is determined to be attenuated; when the SOH is between 91%-100%, the current battery state is determined to be healthy.

[0084] In step S103, the reserve power of the power battery and the energy management strategy of the current vehicle are determined according to the current battery state, and energy management of the vehicle is performed according to the reserve power and the energy management strategy.

[0085] Specifically, the more severe the power battery degradation is, the less backup power the power battery has under the same SOC conditions. Therefore, it is necessary to set the power battery target balance power according to the current battery status to prevent the vehicle from stalling after the power is exhausted.

[0086] Among them, in some embodiments, the reserve power of the power battery and the energy management strategy of the current vehicle are determined according to the current battery state, and the vehicle is energy managed according to the reserve power and the energy management strategy, including: if the current battery state is an unhealthy state, the first preset reserve power threshold interval is used as the reserve power, and the engine power generation is reduced according to the preset reduction strategy, and the engine start-stop SOC interval of running with low power is adjusted to the first preset interval, and the engine starting and dragging power is reduced to the first target power; if the current battery state is a decay state, the second preset reserve power threshold interval is used as the reserve power, and the engine start-stop SOC interval of running with low power is adjusted to the second preset interval, and the engine starting and dragging power is reduced to the second target power; if the current battery state is a healthy state, the third preset reserve power threshold interval is used as the reserve power, and the engine power generation is increased according to the preset increase strategy.

[0087] Among them, the first preset backup power threshold interval, the second preset backup power threshold interval, the third preset backup power threshold interval, the first preset interval and the second preset interval can be intervals set by technical personnel in this field according to needs, or can be intervals obtained through a limited number of computer simulations, and are not specifically limited here; the first target power and the second target power can be powers set by technical personnel in this field according to needs, or can be powers obtained through a limited number of computer simulations, and are not specifically limited here.

[0088] Specifically, if the current battery state is unhealthy, it means that the current power battery is seriously decayed and the total battery capacity is reduced. Therefore, it is necessary to control the power battery reserve power to a higher degree, and reduce the power generation of the engine according to the preset reduction strategy to improve the NVH effect, use sufficient energy to adapt to various working conditions, and adjust the engine start-stop SOC value of the low-power driving to the first preset interval, and reduce the power generation of the engine according to the preset reduction strategy to prevent the engine from frequently starting and stopping due to the reduction of the power battery capacity and the reduction of the available energy in the pure electric interval; at the same time, reduce the engine start-up drag power to the first target power to avoid the impact of the large current on the battery and the impact of the voltage drop on the high-voltage system at the moment of the start-up drag. If the current battery state is decayed, it means that the current power battery is decayed, and the decay rate of the battery should be slowed down at this time. Therefore, the power battery reserve power is controlled to be moderate, and the second preset reserve power threshold interval is used as the reserve power, and the engine start-stop SOC interval of the low-power driving is adjusted to the second preset interval, and the engine drag power is adjusted to the second target power to ensure the start-stop efficiency of the vehicle, taking into account the user experience and the economy of the vehicle. If the current battery status is healthy, the power battery reserve power can be controlled at a lower level, and the third preset reserve power threshold interval can be used as the reserve power. At the same time, the engine power generation can be increased according to the preset increase strategy to avoid drivability problems caused by low power. More low-cost electricity from the power grid can be used to drive the vehicle to reduce the user's vehicle use cost.

[0089] It should be noted that the lower limit value of the first preset backup power threshold interval should be greater than the upper limit value of the second preset backup power threshold interval, and the lower limit value of the second preset backup power threshold interval should be greater than the upper limit value of the third preset backup power threshold interval, so as to achieve a higher backup energy in an unhealthy state and a moderate backup energy in an attenuated state but greater than the backup energy in a healthy state.

[0090] Exemplarily, the first preset reserve power threshold interval may be 35-55%, the second preset reserve power threshold interval may be 20-34%, and the third preset reserve power threshold interval may be 0-19%.

[0091] In order to enable those skilled in the art to further understand the vehicle energy management control method of the embodiment of the present application, it is elaborated in detail below in conjunction with specific embodiments.

[0092] Specifically, Figure 2 As shown, Figure 2 This is a device architecture diagram of an energy management control method provided according to a specific embodiment of the present invention. The device 10 includes: an assembly information acquisition module 11, an energy management correction module 12 and a storage module 13.

[0093] Among them, the assembly information acquisition module 11 is used to obtain the vehicle mileage and power battery health information, and to verify and pre-process the signal value;

[0094] The energy management correction module 12 presets three different types of energy management strategies with different health ranges: when the power battery is in an unhealthy state, the battery reserve energy is the highest, the engine SOC start-stop range is the widest, and the engine start-stop control is the most conservative; when the power battery is in a decaying state, the battery reserve energy is moderate, the engine SOC start-stop range is moderate, and the engine start-stop control is moderate; when the power battery is in a healthy state, the battery reserve energy is the lowest, the engine SOC start-stop range is the narrowest, and the engine start-stop control is aggressive. The receiving assembly information acquisition module identifies the output health and selects the corresponding energy management strategy. At the same time, corrections are made based on the vehicle's mileage;

[0095] The storage module 13 stores the power battery health information for verification of the vehicle information in the next driving cycle.

[0096] In this embodiment, if Figure 3 As shown, the energy management control method of the vehicle includes the following steps:

[0097] S301, start.

[0098] S302, the controller is initialized and reads the last driving cycle identification data of the storage module.

[0099] S303, identifying and verifying the health of the power battery.

[0100] S304, determine whether it is in a healthy state, if yes, execute S305; if not, execute S306.

[0101] S305: Do not activate the energy management mode and do not modify the energy management strategy.

[0102] S306, identifying a decaying or unhealthy state.

[0103] S307, activating the energy management mode and modifying the energy management strategy.

[0104] S308, storing the power battery health information of the current driving cycle during power-off sleep.

[0105] S309, end.

[0106] According to the vehicle energy management control method proposed in the embodiment of the present invention, whether to activate the energy management mode is determined by the historical driving data of the vehicle, and when the energy management mode is activated, the current battery health state is determined, the current battery state of the vehicle is determined according to the different threshold intervals of the battery health, and the corresponding energy management strategy is matched to perform energy management on the vehicle. Therefore, by adjusting the power battery backup energy storage according to the total mileage of the vehicle or the power battery health state, optimizing the engine start-stop strategy, and realizing adaptive adjustment of energy management according to the life cycle of the vehicle, the power battery life is extended, and the user experience is improved.

[0107] Next, the energy management control device for a vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0108] Figure 4 Detailed description of the invention The figure is a block diagram of an energy management control device for a vehicle according to an embodiment of the present invention.

[0109] like Figure 4 As shown, the energy management control device 20 of the vehicle includes: an activation module 100 , a determination module 200 and a correction module 300 .

[0110] The activation module 100 is used to determine whether the energy management mode is activated in the current vehicle;

[0111] The determination module 200 is used to obtain the current driving cycle health of the current vehicle when the energy management mode is activated, and determine the current battery state according to the current driving cycle health;

[0112] The correction module 300 is used to determine the reserve power of the power battery and the energy management strategy of the current vehicle according to the current battery state, and perform energy management on the vehicle according to the reserve power and the energy management strategy.

[0113] According to one embodiment of the present invention, the determination module 200 is specifically used to: determine that the current battery state is an unhealthy state when the health of the current driving cycle is in a first preset threshold interval; determine that the current battery state is a decayed state when the health of the current driving cycle is in a second preset threshold interval, wherein the lower limit value of the second preset threshold interval is greater than the upper limit value of the first preset threshold interval; determine that the current battery state is a healthy state when the health of the current driving cycle is in a third preset threshold interval, wherein the lower limit value of the third preset threshold interval is greater than the upper limit value of the second preset threshold interval.

[0114] According to one embodiment of the present invention, the correction module 300 is specifically used for: when the current battery state is an unhealthy state, using the first preset reserve power threshold interval as the reserve power, and reducing the power generation of the engine according to the preset reduction strategy, and adjusting the engine start-stop SOC interval of running with low power to the first preset interval, and reducing the starting drag power of the engine to the first target power; when the current battery state is a decay state, using the second preset reserve power threshold interval as the reserve power, and adjusting the engine start-stop SOC interval of running with low power to the second preset interval, and reducing the starting drag power of the engine to the second target power; when the current battery state is a healthy state, using the third preset reserve power threshold interval as the reserve power, and increasing the power generation of the engine according to the preset increase strategy.

[0115] According to one embodiment of the present invention, the activation module 100 is specifically used to: obtain the total mileage of the current vehicle and the number of consecutive times that the difference in health of adjacent driving cycles is greater than a preset threshold; if the total mileage is greater than the preset mileage, or the consecutive number is greater than the preset number, it is determined that the current vehicle activates the energy management mode, otherwise, it is determined that the current vehicle does not activate the energy management mode.

[0116] According to an embodiment of the present invention, the activation module 100 is specifically used to: obtain the BMS communication status of the current vehicle; if the BMS communication status is a fault state, then the energy management mode is not activated.

[0117] According to the energy management control device of the vehicle proposed in the embodiment of the present invention, the energy management mode is determined based on the historical travel data of the vehicle, and when the energy management mode is activated, the current battery health state is determined, the current battery state of the vehicle is determined according to the different threshold intervals of the battery health, and the corresponding energy management strategy is matched to perform energy management on the vehicle. Therefore, by adjusting the power battery backup energy storage according to the total mileage of the vehicle or the power battery health state, optimizing the engine start-stop strategy, and realizing adaptive adjustment of energy management according to the life cycle of the vehicle, the power battery life is extended, and the user experience is improved.

[0118] Figure 5 A schematic diagram of the structure of a vehicle provided in an embodiment of the present invention. The vehicle may include:

[0119] A memory 501 , a processor 502 , and a computer program stored in the memory 501 and executable on the processor 502 .

[0120] When the processor 502 executes the program, the vehicle energy management control method provided in the above embodiment is implemented.

[0121] Furthermore, the vehicle also includes:

[0122] The communication interface 503 is used for communication between the memory 501 and the processor 502 .

[0123] The memory 501 is used to store computer programs that can be executed on the processor 502 .

[0124] The memory 501 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0125] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0126] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can communicate with each other through an internal interface.

[0127] The processor 502 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0128] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned vehicle energy management control method when executed by a processor.

[0129] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0130] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0131] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A vehicle energy management control method, characterized in that: The following steps are involved: Determine whether the energy management mode is activated for the current vehicle; If the energy management mode is activated for the current vehicle, obtaining a current driving cycle health of the current vehicle, and determining a current battery state according to the current driving cycle health; The backup power of the power battery and the energy management strategy of the current vehicle are determined according to the current battery state, and energy management of the vehicle is performed according to the backup power and the energy management strategy.

2. The method according to claim 1, characterized in that The determining the current battery state according to the current driving cycle health includes: If the current driving cycle health is within a first preset threshold range, determining that the current battery state is an unhealthy state; If the current driving cycle health is within a second preset threshold interval, determining that the current battery state is a decay state, wherein a lower limit value of the second preset threshold interval is greater than an upper limit value of the first preset threshold interval; If the health of the current driving cycle is in a third preset threshold interval, the current battery state is determined to be a healthy state, wherein a lower limit value of the third preset threshold interval is greater than an upper limit value of the second preset threshold interval.

3. The method according to claim 2, characterized in that The determining the reserve power of the power battery and the energy management strategy of the current vehicle according to the current battery state, and performing energy management on the vehicle according to the reserve power and the energy management strategy, includes: If the current battery state is the unhealthy state, the first preset reserve power threshold interval is used as the reserve power, and the power generation of the engine is reduced according to the preset reduction strategy, and the engine start-stop SOC interval for low-power driving is adjusted to the first preset interval, and the starting drag power of the engine is reduced to the first target power; If the current battery state is the attenuation state, the second preset reserve power threshold interval is used as the reserve power, the engine start-stop SOC interval of the low-power driving is adjusted to the second preset interval, and the engine start-up drag power is reduced to the second target power; If the current battery state is the healthy state, the third preset reserve power threshold interval is used as the reserve power, and the power generation of the engine is increased according to a preset increase strategy.

4. The method according to claim 1, characterized in that: The determining whether the current vehicle activates the energy management mode includes: Obtaining the number of consecutive times that the total mileage of the current vehicle and the health difference of adjacent driving cycle periods are greater than a preset threshold; If the total mileage is greater than a preset mileage, or the consecutive times are greater than a preset times, it is determined that the current vehicle activates the energy management mode; otherwise, it is determined that the current vehicle does not activate the energy management mode.

5. The method according to claim 1, characterized in that The determining whether the current vehicle activates the energy management mode includes: Obtaining the BMS communication status of the current vehicle; If the BMS communication status is a fault state, the energy management mode is not activated.

6. A vehicle energy management control device, characterized in that: include: An activation module is used to determine whether the energy management mode is activated in the current vehicle; a determination module, configured to obtain a current driving cycle health of the current vehicle when the energy management mode is activated by the current vehicle, and determine a current battery state according to the current driving cycle health; The correction module is used to determine the reserve power of the power battery and the energy management strategy of the current vehicle according to the current battery state, and perform energy management on the vehicle according to the reserve power and the energy management strategy.

7. The device according to claim 6, wherein the determining module is specifically configured to: When the health of the current driving cycle is within a first preset threshold range, determining that the current battery state is an unhealthy state; When the current driving cycle health is within a second preset threshold interval, the current battery state is determined to be a decay state, wherein: The lower limit value of the second preset threshold interval is greater than the upper limit value of the first preset threshold interval; When the health of the current driving cycle is within a third preset threshold interval, the current battery state is determined to be a healthy state, wherein a lower limit value of the third preset threshold interval is greater than an upper limit value of the second preset threshold interval.

8. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the energy management control method for a vehicle as claimed in any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the energy management control method for a vehicle as claimed in any one of claims 1 to 5.

10. A computer program product, characterized in that It comprises a computer program, which, when executed by a processor, is used to implement the energy management control method for a vehicle as described in any one of claims 1 to 5.

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