Energy recovery method and device based on battery life, vehicle and storage medium

Abstract

The invention discloses an energy recovery method and device based on the service life of a battery, a vehicle and a storage medium, and the method comprises the steps: comparing the initial energy recovery power of the vehicle in energy recovery with the optimal target charging power of a power battery, so as to obtain a comparison result; the optimal target charging power of the power battery is obtained based on a life cycle model of the power battery, and the optimal target charging power is smaller than the maximum charging power of the power battery; determining the corrected energy recovery power in the vehicle driving process according to the comparison result; determining a target energy recovery torque according to a corrected energy recovery torque corresponding to the corrected energy recovery power and an initial energy recovery torque corresponding to the initial energy recovery power; and outputting a target energy recovery instruction according to the target energy recovery torque to control the vehicle to perform energy recovery. According to the technical scheme, the problems that the performance degradation speed of the power battery of the vehicle is high in the using process, and the service life is shortened are solved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle control, and particularly to an energy recovery method, device, vehicle, and computer-readable storage medium based on battery life. Background Art

[0002] Currently, the power of new energy vehicles comes from power batteries. As the mileage of the vehicle increases, the performance of the power battery will degenerate. Or during the charging process of the power battery through charging piles, range extenders, energy recovery, etc., frequent high-power charging, overcharging, and frequent charging will also lead to a relatively fast attenuation rate of the power battery performance and a reduction in service life. Summary of the Invention

[0003] In view of the above problems, this application provides an energy recovery method, device, vehicle, and computer-readable storage medium based on battery life, which solves the problems of relatively fast attenuation rate of the power battery performance and reduction in service life during the use of the vehicle's power battery.

[0004] According to one aspect of the embodiments of this application, an energy recovery method based on battery life is provided. The method includes:

[0005] When the vehicle is in the energy recovery state, compare the initial energy recovery power with the optimal target charging power of the power battery to obtain a comparison result; wherein, the optimal target charging power of the power battery is obtained based on the life cycle model of the power battery, and the optimal target charging power is less than the maximum charging power of the power battery;

[0006] Determine the corrected energy recovery power during the vehicle's driving process according to the comparison result;

[0007] Determine the target energy recovery torque according to the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power;

[0008] Output a target energy recovery instruction according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery instruction.

[0009] In an optional exemplary embodiment, the method further includes:

[0010] Establish a life cycle model of the power battery regarding the driving mileage and charging cycle times of the power battery based on different target charging powers of the power battery;

[0011] Obtain the optimal target charging power of the power battery according to the life cycle model.

[0012] In an alternative exemplary embodiment, determining the corrected energy recovery power during the vehicle's driving process based on the comparison result includes:

[0013] If the initial energy recovery power is less than the optimal target charging power of the power battery, then determine the initial energy recovery power as the corrected energy recovery power;

[0014] If the initial energy recovery power is greater than the optimal target charging power of the power battery, then determine the optimal target charging power as the corrected energy recovery power.

[0015] In an alternative exemplary embodiment, the method further includes:

[0016] Obtain the driving motor speed of the vehicle during driving;

[0017] Based on the corrected energy recovery power and the driving motor speed, obtain the corrected energy recovery torque.

[0018] In an alternative exemplary embodiment, determining the target energy recovery torque based on the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power includes:

[0019] Compare the corrected energy recovery torque with the initial energy recovery torque corresponding to the initial energy recovery power;

[0020] If the corrected energy recovery torque is greater than the initial energy recovery torque, then determine the initial energy recovery torque as the target energy recovery torque;

[0021] If the corrected energy recovery torque is less than the initial energy recovery torque, then determine the corrected energy recovery torque as the target energy recovery torque.

[0022] In an alternative exemplary embodiment, outputting a target energy recovery instruction according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery instruction further includes:

[0023] Perform a difference calculation between the initial energy recovery torque and the target energy recovery torque to obtain a torque difference;

[0024] If the torque difference is greater than 0, then use the torque difference as the hydraulic compensation torque;

[0025] Output a brake fluid replenishment request instruction according to the hydraulic compensation torque, so that the chassis system performs brake fluid replenishment according to the brake fluid replenishment request instruction;

[0026] If the torque difference is equal to 0, the braking request torque is maintained.

[0027] In an alternative exemplary embodiment, the method further includes:

[0028] When the vehicle is in motion, obtain the coasting action or braking action of the vehicle;

[0029] If a coasting action or braking action is obtained, respond to the energy recovery instruction;

[0030] Obtain the initial energy recovery power corresponding to the energy recovery instruction according to the energy recovery instruction.

[0031] According to another aspect of the embodiments of the present application, an energy recovery device based on battery life is provided. The device includes:

[0032] A power comparison module, configured to compare the initial energy recovery power with the optimal target charging power of the power battery when the vehicle is in energy recovery to obtain a comparison result; wherein, the optimal target charging power of the power battery is obtained based on the life cycle model of the power battery, and the optimal target charging power is less than the maximum charging power of the power battery;

[0033] A first determination module, configured to determine the corrected energy recovery power during the vehicle driving process according to the comparison result;

[0034] A second determination module, configured to determine the target energy recovery torque according to the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power;

[0035] An energy recovery control module, configured to output a target energy recovery instruction according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery instruction.

[0036] According to another aspect of the embodiments of the present application, a vehicle is provided, including:

[0037] A controller;

[0038] A memory, configured to store one or more programs, and when the one or more programs are executed by the controller, enable the controller to implement the energy recovery method based on battery life as described above.

[0039] According to another aspect of the embodiments of the present application, a computer-readable storage medium is provided. A computer program is stored in the computer-readable storage medium. The computer program includes at least one executable instruction. When the executable instruction runs on an energy recovery device / vehicle based on battery life, the energy recovery device / vehicle based on battery life is caused to perform the operations of the energy recovery method based on battery life as described above.

[0040] In the energy recovery method based on battery life according to the embodiments of the present application, when the vehicle is in the energy recovery state, the initial energy recovery power is compared with the optimal target charging power obtained based on the life cycle model of the power battery to determine the corrected energy recovery power during the vehicle driving process. Then, the target energy recovery torque is determined through the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power. Finally, a target energy recovery instruction is output according to the target energy recovery torque to control the vehicle to perform energy recovery. Through the technical solution of the present application, by combining the actual initial energy recovery power during the vehicle driving process and the optimal target charging power obtained based on the life cycle model of the power battery, the optimal target charging power is controlled to be less than the maximum charging power of the power battery, so as to obtain the target energy recovery torque to control the vehicle to perform energy recovery, thereby effectively optimizing the energy recovery during the whole vehicle driving process, enabling the vehicle to control the power battery to work within the optimal charging power range during energy recovery, and avoiding problems such as rapid performance attenuation and reduced service life of the power battery caused by high-power charging, overcharging, frequent charging, etc.

[0041] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings are only used to illustrate the embodiments and are not considered as a limitation to the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0043] Figure 1 A flowchart showing an embodiment of the energy recovery method based on battery life provided by the present application is shown;

[0044] Figure 2 A flowchart showing an embodiment of determining the optimal target charging power of the power battery in the energy recovery method based on battery life provided by the present application is shown;

[0045] Figure 3The figure shows a schematic flowchart of an embodiment for determining the corrected energy recovery power in the energy recovery method based on battery life provided by the present application;

[0046] Figure 4 The figure shows a schematic flowchart of an embodiment for determining the torque of the corrected energy recovery power in the energy recovery method based on battery life provided by the present application;

[0047] Figure 5 The figure shows a schematic flowchart of an embodiment for determining the target energy recovery torque in the energy recovery method based on battery life provided by the present application;

[0048] Figure 6 The figure shows a schematic structural diagram of an embodiment of the energy recovery device based on battery life provided by the present application;

[0049] Figure 7 The figure shows a schematic structural diagram of an embodiment of the vehicle provided by the present application. Detailed Description of the Embodiments

[0050] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0051] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0052] The flowcharts shown in the drawings are only exemplary descriptions and do not necessarily include all contents and operations / steps, nor do they necessarily need to be executed in the described order. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined. Therefore, the actual execution order may change according to the actual situation.

[0053] As used in this application, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0054] Please refer to Figure 1, this application exemplarily shows a flowchart of an energy recovery method based on battery life.

[0055] Among them, the execution subject of the energy recovery method based on battery life can be a terminal device, a server, or other processing devices. Among them, the terminal device can be a user equipment (UE), a computer, a mobile device, a user terminal, a terminal, a cellular phone, a personal digital assistant (PDA), a handheld device, a computing device, a vehicle-mounted device, a wearable device, etc. The execution subject of the energy recovery method based on battery life can also be an automobile. In some possible implementation manners, the energy recovery method based on battery life can be implemented by a processor calling computer-readable instructions stored in a memory.

[0056] Specifically, the energy recovery method based on battery life in this embodiment can be executed by a vehicle, and includes the following steps:

[0057] Step S100, when the vehicle is in the energy recovery state, compare the initial energy recovery power with the optimal target charging power of the power battery to obtain a comparison result; among them, the optimal target charging power of the power battery is obtained based on the life cycle model of the power battery.

[0058] In this embodiment, energy recovery is achieved through the back electromotive force principle of the motor, which means converting the kinetic energy generated during vehicle braking or deceleration into electrical energy and storing it in the power battery, slowing down the speed without consuming any actual fuel, reducing the dependence on the braking system and the wear of brake pads, and at the same time increasing the vehicle's cruising range; energy recovery generally includes braking energy recovery and coasting energy recovery.

[0059] The initial energy recovery power refers to the initial power of energy recovery conversion during the braking process or coasting process of the vehicle when the vehicle is in the braking energy recovery or coasting energy recovery state, that is, the initial power of energy recovery generated by actual braking or coasting after correcting and adjusting the energy recovery. The optimal target charging power of the power battery refers to the optimal charging power that is beneficial to the service life of the power battery. The service life is obtained according to the life cycle model of the power battery in the actual application scenario, and no specific limitation is made here. Exemplarily, if the designed service life of the power battery of the vehicle is 10 years, then the optimal target charging power here is the charging power that enables the power battery to be used according to the designed service life of the life cycle model as the optimal target charging power, and the optimal target charging power is less than the maximum charging power of the power battery, avoiding the power battery from continuously working at its maximum charging power, causing loss to the power battery, and thus resulting in the attenuation of the power battery life.

[0060] In one embodiment, please continue to refer to as Figure 2 shown. In order to obtain the optimal target charging power of the power battery, it at least includes step S110 and step S120, as follows:

[0061] Step S110: Establish a life cycle model regarding the driving range and charging cycle times of the power battery based on different target charging powers of the power battery;

[0062] Step S120: Obtain the optimal target charging power of the power battery according to the life cycle model.

[0063] In this embodiment, the optimal target charging power is based on the optimal charge and discharge life of the power battery. The charge and discharge life of the power battery refers to the number of charge and discharge cycles that the power battery can perform under a certain capacity. Each charge and discharge is counted as one charge and discharge cycle. The number of charging cycles corresponding to the charge and discharge life of the power battery refers to the number of charging cycles corresponding to the designed service life of the power battery loaded on the vehicle before leaving the factory.

[0064] Before the vehicle leaves the factory, through the BMS (Battery Management System) of the power battery, the power battery is charged and discharged with different target charging powers to obtain a life cycle model among the driving range, charging cycle times, and target charging power of the power battery, so as to obtain the optimal target charging power of the power battery when it can reach the driving range and charging cycle times corresponding to this designed service life according to the life cycle model. Exemplarily, in the established life cycle model, if the target charging power of the power battery is 20 KW / h, the predicted driving range of the power battery during its entire life cycle is 300,000 km, and the number of charging cycles is 2,000 times; if the target charging power of the power battery is 25 KW / h, the predicted driving range of the power battery during its entire life cycle is 290,000 km, and the number of charging cycles is 1,970 times; if the target charging power of the power battery is 30 KW / h, the predicted driving range of the power battery during its entire life cycle is 280,000 km, and the number of charging cycles is 1,950 times; then 20 KW / h of the power battery can be used as the optimal target charging power. Through this embodiment, it is convenient for the vehicle to control the energy recovery of the vehicle in combination with the optimal target charging power.

[0065] It should be noted that when the power battery is charged, if it is charged at the maximum charging power of the power battery for a long time, this will increase the loss of the power battery and accelerate the attenuation of the power battery life. If we want the power battery to have a longer life and slow down the attenuation speed, we need to avoid charging the power battery at the maximum power. Therefore, when controlling the vehicle recovery in this application, the first step is to compare the initial energy recovery power during the energy recovery process with the optimal target power obtained based on the life cycle model. Since the optimal target charging power is less than the maximum charging power of the power battery, it avoids the power battery working at its maximum charging power during the energy recovery process, causing loss to the power battery and resulting in the attenuation of the power battery life.

[0066] Step S200: Determine the corrected energy recovery power during the vehicle driving process according to the comparison result.

[0067] In this embodiment, the comparison result refers to the comparison of the initial energy recovery power and the optimal target charging power of the power battery, including the comparison result where the initial energy recovery power is greater than the optimal target charging power of the power battery, and the comparison result where the initial energy recovery power is less than the optimal target charging power of the power battery. Thus, the corrected recovery power for adjusting the vehicle energy recovery is determined according to different comparison results.

[0068] In one embodiment, as shown in Figure 3 To determine the corrected energy recovery power during the vehicle driving process, it is determined based on the comparison result in the foregoing embodiment. Here, it includes at least step S210 and step S220 as follows:

[0069] Step S210: When the initial energy recovery power is less than the optimal target charging power of the power battery, determine the initial energy recovery power as the corrected energy recovery power.

[0070] Step S220: When the initial energy recovery power is greater than the optimal target charging power of the power battery, determine the optimal target charging power as the corrected energy recovery power.

[0071] In this embodiment, in order to enable the power battery of the vehicle to reach the driving mileage and charging cycle times corresponding to the designed service life, it is necessary to limit the energy recovery power of the vehicle. Therefore, in this embodiment, the smaller value is obtained by comparing the initial energy recovery power with the optimal target charging power of the power battery, so that the smaller energy recovery power is used as the corrected energy recovery power. Exemplarily, if the comparison result indicates that the initial energy recovery power is a smaller value relative to the optimal target charging power of the power battery, the initial energy recovery power is determined as the corrected energy recovery power; if the comparison result indicates that the optimal target charging power of the power battery is a smaller value relative to the initial energy recovery power, the optimal target charging power of the power battery is determined as the corrected energy recovery power. Through this embodiment, the smaller energy recovery power is used as the corrected energy recovery power, so that during the coasting or braking process of the vehicle, the energy recovery power is controlled within an appropriate range, avoiding the attenuation of the power battery life caused by a large energy recovery power.

[0072] Step S300: Determine the target energy recovery torque according to the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power.

[0073] Step S400: Output a target energy recovery instruction according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery instruction.

[0074] In this embodiment, the corrected energy recovery torque can be calculated inversely through the corrected energy recovery power to obtain the corrected energy recovery torque. Similarly, the initial energy recovery torque corresponding to the initial energy recovery power can also be calculated inversely, and the initial energy recovery torque can also be directly detected and obtained. After obtaining the corrected energy recovery torque and the initial energy recovery torque, the corrected energy recovery torque and the initial energy recovery torque are compared to determine the target energy recovery torque. Finally, a target energy recovery instruction is output through the target energy recovery torque to control the vehicle to perform energy recovery according to the target energy recovery torque.

[0075] Combining the actual initial energy recovery power during the vehicle driving process and the optimal target charging power obtained based on the life cycle model of the power battery to obtain the target energy recovery torque to control the vehicle to perform energy recovery, thereby effectively optimizing the energy recovery during the whole vehicle driving process, enabling the vehicle to control the power battery to work within the optimal charging power range during energy recovery, and avoiding problems such as rapid performance attenuation and reduced service life of the power battery caused by high-power charging, overcharging, frequent charging, etc.

[0076] In an exemplary embodiment, in order to enable the vehicle to perform energy recovery according to the coasting or braking condition, it is necessary to obtain the coasting action or braking action of the vehicle when the vehicle is in motion. If the coasting action or braking action of the vehicle is obtained, then in response to the energy recovery instruction issued according to the coasting action or braking action, the vehicle is controlled to perform energy recovery. During the energy recovery process of the vehicle, the vehicle can obtain the initial energy recovery power corresponding to the energy recovery. Through this embodiment, the obtained initial energy recovery power can be used as a reference value to determine whether the vehicle needs to correct and adjust the energy recovery.

[0077] In an exemplary embodiment, please refer to Figure 4 As shown, in order to obtain the corrected energy recovery torque corresponding to the corrected energy recovery power when the vehicle is in energy recovery, this embodiment at least further includes step S230 and step S240, as follows:

[0078] Step S230, obtaining the driving motor speed of the vehicle during driving;

[0079] Step S240, obtaining the corrected energy recovery torque according to the corrected energy recovery power and the driving motor speed.

[0080] In this embodiment, the corrected energy recovery torque is calculated inversely according to the corrected energy recovery power, and can be calculated through the torque calculation formula. The torque calculation formula is as follows:

[0081] T 修正 =P 修正 *9550 / n;

[0082] In the torque calculation formula, T 修正 is the corrected energy recovery torque, P 修正 is the corrected energy recovery power, and n is the driving motor speed of the vehicle during driving.

[0083] By calculating the corrected energy recovery torque, the vehicle can confirm the final target energy recovery torque according to the corrected energy recovery torque, thereby facilitating the final control of the vehicle's energy recovery.

[0084] Combined with the above embodiments, please refer to Figure 5 As shown, determining the target energy recovery torque according to the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power includes:

[0085] Step S310, comparing the corrected energy recovery torque with the initial energy recovery torque corresponding to the initial energy recovery power;

[0086] Step S320, if the corrected energy recovery torque is greater than the initial energy recovery torque, then determine the initial energy recovery torque as the target energy recovery torque;

[0087] Step S330, if the corrected energy recovery torque is less than the initial energy recovery torque, then determine the corrected energy recovery torque as the target energy recovery torque.

[0088] In this embodiment, in order to determine the final target energy recovery torque and achieve the control of vehicle energy recovery according to the target energy recovery torque, it is necessary to compare the corrected energy torque and the initial energy recovery and take the smaller value to finally determine a smaller energy recovery torque as the target energy recovery torque. Exemplarily, if the corrected energy recovery torque is a smaller value relative to the initial energy recovery torque, then determine the corrected energy recovery torque as the target energy recovery torque; if the initial energy recovery torque is a smaller value relative to the corrected energy recovery torque, then determine the initial energy recovery torque as the target energy recovery torque, so as to control the vehicle to operate with a smaller energy recovery during the energy recovery process. Through this embodiment, by combining the corrected energy recovery torque and the initial energy recovery torque, a smaller energy recovery torque is used as the target energy recovery torque, so that during the coasting or braking process of the vehicle, the energy recovery torque is controlled within an appropriate range to avoid the attenuation of the power battery life caused by a large energy recovery torque.

[0089] In some exemplary embodiments, in order to ensure driving consistency after restricting vehicle energy recovery and avoid the change of the driver's subjective driving experience caused by the reduction of the energy recovery torque due to the energy recovery power limit, this application further includes supplementing brake fluid according to the change of the energy recovery torque, as follows:

[0090] Calculate the difference between the initial energy recovery torque and the target energy recovery torque to obtain a torque difference;

[0091] If the torque difference is greater than 0, then use the torque difference as the hydraulic compensation torque;

[0092] Output a brake fluid supplement request command according to the hydraulic compensation torque, so that the chassis system executes brake fluid supplement according to the brake fluid supplement request command;

[0093] If the torque difference is equal to 0, then keep the brake request torque.

[0094] In this embodiment, the target energy recovery torque is determined by taking the smaller value of the combined aforementioned corrected energy recovery torque and the initial energy recovery torque. Therefore, the difference between the initial energy recovery torque and the target energy recovery torque is greater than or equal to 0. This solution is to determine whether it is necessary to perform brake fluid replenishment operation on the chassis system by judging whether the torque difference is greater than 0 or equal to 0. Exemplarily, if the initial energy recovery torque is equal to the target energy recovery torque, the torque difference is equal to 0. At this time, the energy recovery torque is consistent with the actual initial energy recovery, and no compensation is required. If the initial energy recovery torque is greater than the target energy recovery torque, the torque difference is greater than 0. At this time, the torque difference is used as the hydraulic compensation torque, and the chassis system is controlled to output a brake fluid replenishment request command, so that the chassis system performs brake fluid replenishment according to the brake fluid replenishment request command, thereby compensating the energy recovery torque through brake fluid replenishment and maintaining the consistency of the brake driving feeling.

[0095] Figure 6 FIG. shows a schematic structural diagram of an embodiment of the energy recovery device based on battery life of the present application. Please refer to Figure 6 As shown, the energy recovery device 500 based on battery life includes a power comparison module 510, a first determination module 520, a second determination module 530, and an energy recovery control module 540;

[0096] The power comparison module 510 is configured to compare the initial energy recovery power with the optimal target charging power of the power battery when the vehicle is in energy recovery to obtain a comparison result. Wherein, the optimal target charging power of the power battery is obtained based on the life cycle model of the power battery, and the optimal target charging power is less than the maximum charging power of the power battery;

[0097] The first determination module 520 is configured to determine the corrected energy recovery power during the driving of the vehicle according to the comparison result;

[0098] The second determination module 530 is configured to determine the target energy recovery torque according to the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power;

[0099] The energy recovery control module 540 is configured to output a target energy recovery command according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery command.

[0100] It should be noted that the energy recovery device 500 based on battery life provided in the above embodiment and the energy recovery method based on battery life provided in the foregoing embodiment belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the method embodiment, and will not be elaborated herein.

[0101] Figure 7 The schematic structural diagram of an embodiment of the vehicle of the present application is shown, which shows the schematic structural diagram of a computer system of the vehicle suitable for implementing the embodiment of the present application. The specific implementation of the vehicle is not limited in the specific embodiments of the present application.

[0102] Please refer to Figure 7 As shown, the vehicle includes: a controller; a memory for storing one or more programs, which when executed by the controller, are used to execute the above-mentioned energy recovery method based on battery life.

[0103] Please continue to refer to Figure 7 As shown, the computer system 600 of the vehicle includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage section 608 into the random access memory (RAM) 603, such as executing the method in the above embodiment. In the RAM 603, various programs and data required for system operation are also stored. The CPU 601, ROM 602, and RAM 603 are connected to each other via a bus 604. The input / output (I / O) interface 605 is also connected to the bus 604.

[0104] The following components are connected to the I / O interface 605: an input section 606 including a keyboard, a mouse, etc.; an output section 607 including, for example, a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 609 performs communication processing via a network such as the Internet. The drive 610 is also connected to the I / O interface 605 as required. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 610 as required, so that the computer program read from it can be installed into the storage section 608 as required.

[0105] In particular, according to the embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present application include a computer program product that includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 609, and / or installed from the removable medium 611. When the computer program is executed by the central processing unit (CPU) 601, various functions defined in the system of the present application are executed.

[0106] Another aspect of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the energy recovery method based on battery life as described above is implemented. The computer-readable storage medium can be included in the vehicle described in the above embodiments, or can exist alone without being assembled into the vehicle.

[0107] Another aspect of the present application also provides a computer program product or a computer program. The computer program product or the computer program includes at least one executable instruction. When the executable instruction runs on an energy recovery device / vehicle based on battery life, the energy recovery device / vehicle based on battery life executes the energy recovery method based on battery life as described below:

[0108] When the vehicle is in the energy recovery state, compare the initial energy recovery power with the optimal target charging power of the power battery to obtain a comparison result; wherein, the optimal target charging power of the power battery is obtained based on the life cycle model of the power battery, and the optimal target charging power is less than the maximum charging power of the power battery;

[0109] Determine the corrected energy recovery power during the vehicle driving process according to the comparison result;

[0110] Determine the target energy recovery torque according to the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power;

[0111] Output a target energy recovery instruction according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery instruction.

[0112] In an alternative manner, the executable instruction can specifically also be used to cause the energy recovery device / vehicle based on battery life to perform the following operations:

[0113] Establish a life cycle model of the driving mileage and charging cycle times of the power battery based on different target charging powers of the power battery;

[0114] Obtain the optimal target charging power of the power battery according to the life cycle model.

[0115] In an alternative manner, the executable instructions may specifically further be used to cause the energy recovery device / vehicle based on battery life to perform the following operations:

[0116] In the case where the initial energy recovery power is less than the optimal target charging power of the power battery, determine the initial energy recovery power as the corrected energy recovery power;

[0117] In the case where the initial energy recovery power is greater than the optimal target charging power of the power battery, determine the optimal target charging power as the corrected energy recovery power.

[0118] In an alternative manner, the executable instructions may specifically further be used to cause the energy recovery device / vehicle based on battery life to perform the following operations:

[0119] Obtain the driving motor speed of the vehicle during driving;

[0120] Obtain the corrected energy recovery torque according to the corrected energy recovery power and the driving motor speed.

[0121] In an alternative manner, the executable instructions may specifically further be used to cause the energy recovery device / vehicle based on battery life to perform the following operations:

[0122] Compare the corrected energy recovery torque with the initial energy recovery torque corresponding to the initial energy recovery power;

[0123] In the case where the corrected energy recovery torque is greater than the initial energy recovery torque, determine the initial energy recovery torque as the target energy recovery torque;

[0124] In the case where the corrected energy recovery torque is less than the initial energy recovery torque, determine the corrected energy recovery torque as the target energy recovery torque.

[0125] In an alternative manner, the executable instructions may specifically further be used to cause the energy recovery device / vehicle based on battery life to perform the following operations:

[0126] Calculate the difference between the initial energy recovery torque and the target energy recovery torque to obtain a torque difference;

[0127] If the torque difference is greater than 0, use the torque difference as the hydraulic compensation torque;

[0128] According to the hydraulic compensation torque output brake fluid replenishment request instruction, so that the chassis system executes brake fluid replenishment according to the brake fluid replenishment request instruction;

[0129] If the torque difference is equal to 0, the brake request torque is maintained.

[0130] In an alternative manner, the executable instruction can specifically be further used to cause the energy recovery device / vehicle based on battery life to perform the following operations:

[0131] When the vehicle is in motion, obtain the coasting action or braking action of the vehicle;

[0132] If a coasting action or braking action is obtained, respond to the energy recovery instruction;

[0133] Obtain the initial energy recovery power corresponding to the energy recovery instruction according to the energy recovery instruction.

[0134] In the energy recovery method based on battery life according to the embodiments of the present application, when the vehicle is in energy recovery, the initial energy recovery power is compared with the optimal target charging power obtained based on the life cycle model of the power battery to determine the corrected energy recovery power during vehicle driving. Then, the target energy recovery torque is determined by the corrected energy recovery torque corresponding to the corrected energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power. Finally, the target energy recovery instruction is output according to the target energy recovery torque to control the vehicle for energy recovery. Through the technical solution of the present application, by combining the actual initial energy recovery power during vehicle driving and the optimal target charging power obtained based on the life cycle model of the power battery, the optimal target charging power is controlled to be less than the maximum charging power of the power battery, so as to obtain the target energy recovery torque to control the vehicle for energy recovery, thereby effectively optimizing the energy recovery during the whole vehicle driving process, enabling the vehicle to control the power battery to work within the optimal charging power range during energy recovery, and avoiding problems such as rapid performance decay and shortened service life of the power battery caused by high-power charging, overcharging, frequent charging, etc.

[0135] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, and this computer-readable medium can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0136] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. Among them, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code, and the above-mentioned module, program segment, or part of code contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and the combination of blocks in the block diagram or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0137] The units involved in the embodiments described in this application can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not, in some cases, constitute a limitation on the unit itself.

[0138] According to one aspect of the embodiments of the present application, there is also provided a computer system, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage section into a random access memory (RAM), such as performing the methods in the above embodiments. In the RAM, various programs and data required for system operations are also stored. The CPU, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0139] The following components are connected to the I / O interface: an input section including a keyboard, a mouse, etc.; an output section including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section including a hard disk, etc.; and a communication section including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as required. A removable medium, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive as required, so that a computer program read from it can be installed into the storage section as required.

[0140] The above content is only a preferred exemplary embodiment of the present application and is not used to limit the implementation of the present application. Those of ordinary skill in the art can easily make corresponding adaptations or modifications according to the main concept and spirit of the present application. Therefore, the protection scope of the present application should be subject to the protection scope required by the claims.

[0141] When the relevant data collection and processing in this application book are applied in practice, the informed consent or separate consent of the personal information subject should be obtained strictly in accordance with the requirements of relevant national laws and regulations, and subsequent data use and processing behaviors should be carried out within the scope authorized by laws and regulations and the personal information subject.

Claims

1. An energy recovery method based on battery life, characterized in that: The method includes: When the vehicle is in energy recovery, the initial energy recovery power is compared with the optimal target charging power of the power battery to obtain a comparison result; wherein the optimal target charging power of the power battery is obtained based on a life cycle model of the power battery, and the optimal target charging power is less than the maximum charging power of the power battery; Determining a corrected energy recovery power during the driving of the vehicle according to the comparison result; determining a target energy recovery torque according to a modified energy recovery torque corresponding to the modified energy recovery power and an initial energy recovery torque corresponding to the initial energy recovery power; A target energy recovery command is output according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery command.

2. The energy recovery method based on battery life according to claim 1, characterized in that: The method further comprises: Establishing a life cycle model regarding the driving mileage and charging cycle number of the power battery based on different target charging powers of the power battery; The optimal target charging power of the power battery is obtained according to the life cycle model.

3. The energy recovery method based on battery life according to claim 1, characterized in that: The determining, according to the comparison result, the corrected energy recovery power during the vehicle's driving process includes: In a case where the initial energy recovery power is less than the optimal target charging power of the power battery, determining the initial energy recovery power as the corrected energy recovery power; When the initial energy recovery power is greater than the optimal target charging power of the power battery, the optimal target charging power is determined as the corrected energy recovery power.

4. The energy recovery method based on battery life according to claim 3, characterized in that: The method further comprises: Obtaining a driving motor speed of the vehicle during driving; The corrected energy recovery torque is obtained according to the corrected energy recovery power and the driving motor speed.

5. The energy recovery method based on battery life according to claim 4, characterized in that: The determining the target energy recovery torque according to the modified energy recovery torque corresponding to the modified energy recovery power and the initial energy recovery torque corresponding to the initial energy recovery power comprises: comparing the corrected energy recovery torque with the initial energy recovery torque corresponding to the initial energy recovery power; In a case where the corrected energy recovery torque is greater than the initial energy recovery torque, determining the initial energy recovery torque as the target energy recovery torque; In a case where the corrected energy recovery torque is smaller than the initial energy recovery torque, the corrected energy recovery torque is determined as the target energy recovery torque.

6. The energy recovery method based on battery life according to claim 1, characterized in that: The outputting a target energy recovery instruction according to the target energy recovery torque to control the vehicle to perform energy recovery based on the target energy recovery instruction further includes: Calculating the difference between the initial energy recovery torque and the target energy recovery torque to obtain a torque difference; If the torque difference is greater than 0, the torque difference is used as the hydraulic compensation torque; outputting a brake fluid replenishment request instruction according to the hydraulic compensation torque, so that the chassis system performs brake fluid replenishment according to the brake fluid replenishment request instruction; If the torque difference is equal to 0, the brake request torque is maintained.

7. The energy recovery method based on battery life according to any one of claims 1 to 6, characterized in that: The method further comprises: When the vehicle is in motion, obtaining a sliding action or a braking action of the vehicle; If a sliding action or a braking action is obtained, respond to an energy recovery instruction; An initial energy recovery power corresponding to the energy recovery instruction is acquired according to the energy recovery instruction.

8. An energy recovery device based on battery life, characterized in that: The device comprises: A power comparison module, used for comparing the initial energy recovery power with the optimal target charging power of the power battery when the vehicle is in energy recovery, so as to obtain a comparison result; wherein the optimal target charging power of the power battery is obtained based on the life cycle model of the power battery, and the optimal target charging power is less than the maximum charging power of the power battery; A first determination module, configured to determine the corrected energy recovery power during the driving process of the vehicle according to the comparison result; A second determination module is used to determine a target energy recovery torque according to a modified energy recovery torque corresponding to the modified energy recovery power and an initial energy recovery torque corresponding to the initial energy recovery power; The energy recovery control module is used to output a target energy recovery instruction according to the target energy recovery torque, so as to control the vehicle to perform energy recovery based on the target energy recovery instruction.

9. A vehicle, characterized in that: include: Controller; A memory for storing one or more programs, which, when executed by the controller, enables the controller to implement the energy recovery method based on battery life as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which includes at least one executable instruction. When the executable instruction is executed on the energy recovery device / vehicle based on battery life, the energy recovery device / vehicle based on battery life performs the operation of the energy recovery method based on battery life as described in any one of claims 1 to 7.

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