Vehicle energy recovery control method and device, electronic equipment and storage medium

Abstract

The invention provides a vehicle energy recovery control method and device, electronic equipment and a storage medium, and is suitable for the technical field of new energy automobiles, the control method comprises the following steps: under the condition that the current control information of a vehicle meets a preset control condition, obtaining vehicle exterior environment information and battery information; and controlling energy recovery of the vehicle based on the external environment information and the battery information. The preset control condition can be automatically set according to the subjective comfortable operation requirement of a driver, and when it is detected that the current control information of the vehicle meets the preset control condition, energy recovery of the vehicle is controlled based on the external environment information and the battery information; and a driver does not need to tread on a pedal of the vehicle to generate the recovery torque, so that the driving comfort of the new energy vehicle in the energy recovery operation process is improved.

Description

Technical Field

[0001] This application belongs to the technical field of new energy vehicles, and particularly relates to a control method, device, electronic device and storage medium for vehicle energy recovery. Background Art

[0002] Today, with great emphasis on energy issues, new energy vehicles are increasingly becoming the future development trend. And the power problem of new energy vehicles is the top priority affecting the development of new energy vehicles. Most new energy vehicles on the market currently use batteries as their power source. Electric vehicle energy recovery is a major factor in improving the energy efficiency of electric vehicles. The energy recovery system is also a major feature that differentiates electric vehicles from fuel vehicles. In traditional fuel vehicles, when the vehicle passes through the braking system, due to friction generating heat, the energy generated by friction is converted into heat and dissipated. In electric vehicles, when the driving stops, the vehicle wheels drive the motor to be converted into a "generator" to charge the battery, thereby achieving energy recovery and greatly increasing the endurance.

[0003] However, the prerequisite for new energy vehicles to trigger energy recovery is that the driver needs to perform a series of operations to brake the vehicle, so that the vehicle wheels can drive the motor to be converted into a "generator" to charge the battery. Then the driver needs to frequently step on the brake or accelerator to maintain the vehicle speed, resulting in uncomfortable operation for the driver. There may even be a need for emergency braking operations due to human negligence, and the safety cannot be guaranteed, and the energy recovery efficiency is not very high either. Summary of the Invention

[0004] The embodiments of this application provide a control method, device, electronic device and storage medium for vehicle energy recovery, which can solve the technical problem of low driving comfort during the operation of energy recovery in new energy vehicles.

[0005] In a first aspect, the embodiments of this application provide a control method for vehicle energy recovery, and the method includes:

[0006] When the current control information of the vehicle meets the preset control conditions, obtain the external environment information and battery information of the vehicle;

[0007] Control the energy recovery of the vehicle based on the external environment information and the battery information.

[0008] In the embodiments of this application, the preset control conditions can be set according to the driver's subjective comfortable operation requirements. When it is detected that the current control information of the vehicle meets the preset control conditions, the energy recovery of the vehicle is controlled based on the external environment information and the battery information, without the driver having to step on the vehicle pedal to generate a recovery torque, thereby improving the driving comfort of new energy vehicles during the energy recovery operation.

[0009] In some embodiments, controlling the energy recovery of the vehicle based on the external environment information and the battery information includes:

[0010] Obtaining an adaptive recovery torque and a motor recovery torque threshold according to the external environment information;

[0011] Obtaining a battery recovery torque threshold according to the battery information;

[0012] Controlling the energy recovery of the vehicle based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold.

[0013] In the embodiments of the present application, the adaptive recovery torque can be directly calculated based on the external environment information without the need for the driver to step on the pedal of the vehicle to generate the recovery torque, which improves the comfort of using the energy recovery function during the driving of new energy vehicles. It can also avoid the operation requirement of emergency braking due to driver negligence, indirectly improving driving safety; and controlling the energy recovery of the vehicle based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold further ensures the energy recovery efficiency.

[0014] In some embodiments, controlling the energy recovery of the vehicle based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold includes:

[0015] When the absolute value of the adaptive recovery torque is less than the absolute value of the motor recovery torque threshold and the absolute value of the adaptive recovery torque is less than the absolute value of the battery recovery torque threshold, controlling the motor of the vehicle to perform energy recovery according to the adaptive recovery torque.

[0016] In the embodiments of the present application, when the recovery capabilities of the vehicle's battery and motor are both satisfied, the motor of the vehicle is controlled to perform energy recovery.

[0017] In some embodiments, the control method further includes:

[0018] When the absolute value of the adaptive recovery torque is greater than the absolute value of the motor recovery torque threshold and / or the absolute value of the adaptive recovery torque is greater than the absolute value of the battery recovery torque threshold, outputting a preset prompt message.

[0019] In the embodiments of the present application, when the recovery capabilities of the vehicle's battery and motor cannot be satisfied simultaneously, a preset prompt message can be output. The preset prompt message can include relevant description information expressing insufficient recovery ability or asking to step on the brake pedal to prompt the driver that braking is needed to make up for the deceleration to achieve energy recovery.

[0020] In some embodiments, obtaining the adaptive recuperation torque and the motor recuperation torque threshold according to the external vehicle environment information includes:

[0021] When the external vehicle environment information meets the preset safety distance detection condition, determining the current safety distance according to the external vehicle environment information;

[0022] Generating the braking speed of the vehicle according to the current safety distance;

[0023] Generating the adaptive recuperation torque and the motor recuperation torque threshold based on the braking speed.

[0024] In the embodiments of the present application, the deceleration is used to calculate how much recuperation torque the vehicle needs, so as to accurately calculate the torque data to be recuperated while ensuring the driving safety of the driver, and the recuperation efficiency is guaranteed.

[0025] In some embodiments, the battery information at least includes the remaining battery power and the battery temperature;

[0026] Obtaining the battery recuperation torque threshold according to the battery information includes:

[0027] When the remaining battery power is not greater than the preset remaining power threshold, calculating the battery recuperation torque threshold according to the remaining battery power and the battery temperature.

[0028] In the embodiments of the present application, when it is determined that the remaining battery power of the vehicle is insufficient, the current allowable recuperation torque of the battery is accurately generated. The recuperation torque will ultimately be converted into a recuperation current and charged into the battery pack, avoiding energy recuperation when the torque is too large or the remaining battery power is relatively sufficient.

[0029] In some embodiments, the preset control conditions include that the current gear of the vehicle is the target gear, the throttle pedal information of the vehicle is the target throttle pedal opening, and the brake pedal information of the vehicle is the target brake pedal opening. In the embodiments of the present application, the preset control conditions of this embodiment can be the control conditions corresponding to turning on the adaptive cruise function, which helps to turn on the adaptive cruise function when the current control information of the vehicle meets this preset control condition, and connect the adaptive deceleration function in the adaptive cruise function to the vehicle's power recuperation torque chain, so that the driver can use the adaptive recuperation function in other driving scenarios without turning on the adaptive cruise function, increasing driving comfort and safety.

[0030] In some embodiments, the target gear is the forward gear, the value range of the target throttle pedal opening is the first opening range, and the value range of the target brake pedal is the second opening range.

[0031] In the embodiments of the present application, the user can set the preset control conditions by themselves to meet their personal operation preference requirements.

[0032] In a second aspect, the present application also proposes a control device for vehicle energy recovery. The device includes a vehicle controller

[0033] The vehicle controller is configured to obtain external environment information and battery information when the current control information of the vehicle meets the preset control conditions; and control the energy recovery of the vehicle based on the external environment information and the battery information.

[0034] In the embodiments of the present application, when the vehicle controller detects that the current control information of the new energy vehicle meets the preset control conditions, it controls the energy recovery of the new energy vehicle based on the external environment information and the battery information, without the driver generating a recovery torque by stepping on the pedal of the new energy vehicle, thereby improving the driving comfort of the new energy vehicle during the energy recovery operation.

[0035] In some embodiments, the device further includes a battery management system and an adaptive cruise system;

[0036] The vehicle controller is configured to send a target request to the adaptive cruise system when detecting that the current control information of the vehicle meets the preset control conditions;

[0037] The adaptive cruise system is configured to obtain external environment information based on the target request, and generate an adaptive recovery torque and a motor recovery torque threshold based on the external environment information;

[0038] The battery management system is configured to obtain the battery recovery torque threshold according to the battery information;

[0039] The vehicle controller is further configured to generate a torque control request according to the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold, and send the torque control request to the motor of the vehicle, so that the motor performs energy recovery according to the adaptive recovery torque.

[0040] In the embodiments of the present application, the adaptive cruise system can calculate the adaptive recovery torque based on the external environment information, without generating a recovery torque by the driver stepping on the pedal of the vehicle, improving the comfort of using the energy recovery function during the process of driving a new energy vehicle, and can also avoid the operation requirement of emergency braking due to driver negligence, indirectly improving driving safety; and the vehicle controller controls the energy recovery of the vehicle based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold, further ensuring the energy recovery efficiency.

[0041] In a third aspect, the present application further provides an electronic device, including a memory, a vehicle terminal processor, and a computer program stored in the memory and executable on the vehicle terminal processor. When the vehicle terminal processor executes the computer program, the method described in any one of the above is implemented.

[0042] In a fourth aspect, the present application further provides a storage medium, which is a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the above is implemented.

[0043] It can be understood that the beneficial effects of the above third aspect and fourth aspect can be referred to the relevant descriptions of the above first aspect or second aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0045] Figure 1 It is a schematic flowchart of the first embodiment of the control method for vehicle energy recovery of the present application;

[0046] Figure 2 It is a schematic flowchart of the second embodiment of the control method for vehicle energy recovery of the present application;

[0047] Figure 3 It is a schematic structural diagram of the embodiment of the electronic device provided by the present application;

[0048] Figure 4 It is a block diagram of the structure of the control device for vehicle energy recovery provided by the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0050] It should be understood that when used in the specification of this application and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0051] It should also be understood that the term "and / or" used in the specification of this application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0052] In the description of the embodiments of this application, the term "a plurality" means two or more (including two), unless otherwise specifically defined.

[0053] In addition, in the description of the specification of this application and the appended claims, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0054] Reference to "one embodiment" or "some embodiments" etc. described in the specification of this application means that a specific feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having", and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0055] The inventors of this application have noticed that the prerequisite for a new energy vehicle to trigger energy recovery is that the driver needs to achieve vehicle braking through a series of operations, so that the vehicle wheels can drive the motor to be converted into a "generator" to charge the battery. Then, the driver needs to frequently step on the brake or accelerator to maintain the vehicle speed, resulting in uncomfortable operation for the driver.

[0056] To solve the above technical problems, a technical solution for the control method of vehicle energy recovery in this application is proposed; to illustrate the technical solution proposed in the embodiments of this application, specific embodiments are used for illustration below.

[0057] Embodiment 1

[0058] Please refer to Figure 1 , Figure 1Schematic flowchart of the first embodiment of a vehicle energy recovery control method provided by this application. The vehicle energy recovery control method in the embodiments of this application can be applied to the vehicle-end processor of a new energy vehicle. The vehicle energy recovery control method includes:

[0059] Step S10, when the current driving information of the vehicle meets the preset driving conditions, obtain the external environment information and battery information of the vehicle;

[0060] It should be noted that the execution subject of the vehicle energy recovery control method in this embodiment is the vehicle-end processor of the vehicle (new energy vehicle). The vehicle-end processor may include a vehicle control unit (VCU), a battery management system (BMS), and an information perception unit, which cooperate with each other to jointly complete the control of vehicle energy recovery.

[0061] The preset driving conditions include that the current gear of the vehicle is the target gear, the throttle pedal information of the vehicle is the target throttle pedal opening, and the brake pedal information of the vehicle is the target brake pedal opening; the target gear can be a forward gear, and both the target throttle pedal opening and the target brake pedal opening are zero openings (that is, the driver is not stepping on the brake or the throttle).

[0062] Of course, in other embodiments, the driver can also set the target throttle pedal opening and the target brake pedal opening according to their own preferences (for example, some drivers have the habit of lightly touching the pedal with their feet). The driver can set the value range of the target throttle pedal opening as the first opening range, and set the value range of the target brake pedal as the second opening range: for example, the first opening range can be a value between 0 pedal opening and 3% of the pedal opening, and the second opening range can be a value between 0 pedal opening and 5% of the pedal opening. In this way, even if the driver gently touches the pedal, the vehicle-end processor will determine that the current driving information meets the preset driving conditions.

[0063] In specific implementation, when the current driving information of the vehicle is that the vehicle gear is in the forward gear (or the current vehicle speed is greater than 7 km / h), the throttle pedal information of the vehicle is 0 opening, and the brake pedal information of the vehicle is 0 opening, obtain the external environment information and battery information. The external environment information is obtained by the information perception unit, and the battery information can be obtained by the battery management system.

[0064] Step S20, control the energy recovery of the vehicle based on the external environment information and the battery information.

[0065] Specifically, the vehicle external environment information may include information such as the distance between the vehicle and the vehicle in front, traffic light information, and the distance between the vehicle and the pedestrian in front; based on the vehicle external environment information, the vehicle end processor can automatically generate a braking speed without the driver generating the braking speed by stepping on the vehicle pedal;

[0066] In a specific implementation, the battery information may include the remaining battery charge SOC (State of Charge) and the battery temperature.

[0067] If the vehicle has an adaptive cruise function, that is, the vehicle end processor further includes an Adaptive Cruise Control (ACC) system, in this embodiment, the adaptive deceleration function in the adaptive cruise function can be connected to the power recovery torque chain of the vehicle, so that the driver does not need to step on the vehicle pedal to generate the recovery torque; the preset control condition of this application can be the control condition corresponding to turning on the adaptive cruise function, and of course, it can also be set according to the driver's subjective comfort operation requirements;

[0068] When the vehicle end processor of this embodiment detects that the current control information of the vehicle meets this preset control condition, it controls the energy adaptive recovery of the vehicle based on the vehicle external environment information and the battery information, without the driver generating the recovery torque by stepping on the vehicle pedal, thereby improving the driving comfort of new energy vehicles during the energy recovery operation process.

[0069] Embodiment Two

[0070] Further, as Figure 2 shown, based on the above Embodiment One, Embodiment Two is proposed to expand and explain the control method for vehicle energy recovery of this application.

[0071] In this embodiment, the step S20 (controlling the energy recovery of the vehicle based on the vehicle external environment information and the battery information) further includes:

[0072] Step S21, obtaining an adaptive recovery torque and a motor recovery torque threshold according to the vehicle external environment information;

[0073] Specifically, the vehicle external environment information in this embodiment may include information such as the distance between the vehicle and the vehicle in front, traffic light information, and the distance between the vehicle and the pedestrian in front. The vehicle external environment information is obtained by an information sensing unit, and the information sensing unit may be a component of the vehicle's adaptive cruise system;

[0074] In a specific implementation, when the vehicle external environment information meets the preset safety distance detection condition, the adaptive cruise control system determines the current safety distance according to the vehicle external environment information, and then generates the braking speed of the vehicle according to the current safety distance; finally, the adaptive cruise control system can generate the adaptive recuperation torque and the motor recuperation torque threshold based on the braking speed (that is, calculate how much recuperation torque the vehicle needs according to the deceleration). It can be understood that the recuperation torque generated by the motor mainly depends on the motor speed. In this embodiment, the adaptive cruise control system can determine the current motor speed according to the braking speed, and then generate the adaptive recuperation torque and the motor recuperation torque threshold based on the current motor speed.

[0075] It should be noted that in the torque definition of new energy vehicles, the torque that drives the vehicle to move is defined as positive torque, and the torque that hinders (recuperates) the vehicle from moving is defined as negative torque;

[0076] The "adaptive recuperation torque", "motor recuperation torque threshold" and "battery recuperation torque threshold" involved in this embodiment are all less than 0 Nm, that is, the "adaptive recuperation torque", "motor recuperation torque threshold" and "battery recuperation torque threshold" are all negative numbers and are all less than 0 Nm.

[0077] The preset safety distance detection in this embodiment can be understood as the presence of obstacle targets such as carrier vehicles, pedestrians or traffic lights in front of the vehicle within the preset safety distance range, and then generate the braking speed of the vehicle based on the current safety distance (that is, the current distance between the vehicle and the obstacle target, which can be set to 50 meters or 100 meters, and this preset safety distance detection condition can be set by the driver's needs), calculate the current allowable recuperation torque (motor recuperation torque threshold) of the motor and the adaptive recuperation torque to be generated (that is, the adaptive recuperation torque) based on the braking speed of the vehicle. Furthermore, while ensuring the driving safety of the driver, it can accurately calculate the torque data to be recuperated, ensuring the recuperation efficiency.

[0078] Step S22, obtain the battery recuperation torque threshold according to the battery information;

[0079] It should be noted that the battery information in this embodiment at least includes the remaining battery charge and the battery temperature;

[0080] In a specific implementation, the battery management system can calculate the battery recovery torque threshold according to the remaining battery charge (SOC) and the battery temperature when the remaining battery charge (SOC) is less than a preset remaining charge threshold. If the SOC is not less than the preset remaining charge threshold, it means that the battery charge is relatively sufficient, and subsequent energy recovery operations are not required. The preset remaining charge threshold can indicate that the remaining charge of the vehicle battery is insufficient. When it is determined that the remaining charge of the vehicle is insufficient, the current allowable recovery torque of the battery (i.e., the battery recovery torque threshold) can be accurately generated. The recovery torque will ultimately be converted into a recovery current and charged into the battery pack, avoiding energy recovery when the torque is too large or the remaining battery charge is relatively sufficient.

[0081] Step S23, control the energy recovery of the vehicle based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold.

[0082] In the specific implementation of controlling the energy recovery of the vehicle, there will be two situations:

[0083] Situation 1: When the absolute value of the adaptive recovery torque is less than the absolute value of the motor recovery torque threshold and the absolute value of the adaptive recovery torque is less than the absolute value of the battery recovery torque threshold, control the motor of the vehicle to perform energy recovery according to the adaptive recovery torque. That is, when the recovery capabilities of the vehicle's battery and motor are both satisfied, control the vehicle's motor to perform energy recovery.

[0084] In a specific implementation, based on the above Situation 1, the vehicle's vehicle control unit generates a torque control request and sends the torque control request to the vehicle's motor, so that the motor performs energy recovery according to the adaptive recovery torque.

[0085] Situation 2: When the absolute value of the adaptive recovery torque is greater than the absolute value of the motor recovery torque threshold, and / or the absolute value of the adaptive recovery torque is greater than the absolute value of the battery recovery torque threshold, output a preset prompt message.

[0086] When the recovery capabilities of the vehicle's battery and motor cannot be satisfied simultaneously, a preset prompt message can be output. The preset prompt message can include relevant description information expressing "insufficient recovery ability" or "insufficient recovery ability, please step on the brake pedal!" to prompt the driver that braking is required to make up for the deceleration to achieve energy recovery.

[0087] It is understandable that the recovered energy (i.e., the generated adaptive recovery torque) will ultimately be converted into a recovery current and charged into the battery pack of the new energy vehicle. When the recovery torque is too large or the battery is fully charged, recovery is not allowed (determined by battery performance). Therefore, this application needs to judge the adaptive recovery torque that the adaptive cruise system is about to generate. When the absolute value of the currently allowed recovery torque of the vehicle's motor (motor recovery torque threshold) and the absolute value of the currently allowed recovery torque of the battery (battery recovery torque threshold) are both greater than the absolute value of the adaptive recovery torque (calculated by the ACC adaptive cruise system), energy recovery is performed;

[0088] The beneficial effects of this embodiment are as follows: It can directly calculate the adaptive recovery torque based on the external vehicle environment information, without the need for the driver to step on the vehicle's pedal to generate the recovery torque, and there is no need to respond to the pedalmap (torque look-up process) recovery torque, which improves the comfort of using the energy recovery function during the driving of new energy vehicles. It can also avoid the operation requirement of emergency braking due to driver negligence, indirectly improving driving safety; and it controls the vehicle's energy recovery based on the adaptive recovery torque, motor recovery torque threshold, and battery recovery torque threshold, further ensuring the energy recovery efficiency.

[0089] Further, in an application scenario embodiment, when the driver is driving the vehicle, there are an adaptive recovery function button and a coasting energy recovery function button inside the cab of the vehicle. The adaptive recovery function button and the coasting energy recovery function button can be virtual buttons displayed on the in-vehicle display screen or physical buttons on the console inside the cab.

[0090] In the case where both the adaptive recovery function button and the coasting energy recovery function button are virtual buttons displayed on the in-vehicle display screen, the driver needs to set their functions to the on state (for example, the driver touches the virtual button on the screen and its current state shows ON, indicating that the function has been turned on), indicating that both the vehicle's adaptive recovery function and the coasting energy recovery function have been pre-opened.

[0091] On the basis that both the adaptive recuperation function and the coasting energy recuperation function of the vehicle are in a pre-enabled state, if all of the following conditions are met: the vehicle gear is in the forward gear, the throttle pedal information of the vehicle is at 0 opening, the brake pedal information of the vehicle is at 0 opening, the remaining battery charge SOC of the vehicle is less than a preset remaining charge threshold, and the vehicle external environment information meets the preset safe distance detection condition, then the control method for vehicle energy recuperation of this embodiment starts to run, and the vehicle control unit (VCU) controls the energy recuperation of the vehicle based on the vehicle external environment information and the battery information; if any of the above conditions is not met, the vehicle of this embodiment will exit the intelligent recuperation mode, and the vehicle control unit will request pedalmap torque in a conventional manner.

[0092] Embodiment III

[0093] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of an embodiment of an electronic device for controlling vehicle energy recuperation provided by this application. As Figure 3 shown, the electronic device of this embodiment includes: a vehicle-side processor 10, a memory 11, and a computer program 12 stored in the memory 11 and executable on the at least one vehicle-side processor 10. When the vehicle-side processor 10 executes the computer program 12, the steps in the embodiment of the control method for vehicle energy recuperation of this application are implemented.

[0094] Figure 3 The electronic device shown may include, but is not limited to, a vehicle-side processor 10 and a memory 11. Those skilled in the art can understand that Figure 3 is merely an example of an electronic device and does not constitute a limitation on the electronic device. It may include more or fewer components than shown in the figure, or combine certain components, or different components. Specifically, Figure 3 the electronic device shown may be characterized as a new energy vehicle, and the electronic device may further include an in-vehicle display screen, an automotive motor, a new energy battery, a shift transmission, a throttle pedal, and a brake pedal, etc.

[0095] The so-called vehicle-side processor 10 may include a vehicle control unit (VCU), a battery management system (BMS), and an adaptive cruise control (ACC). They cooperate with each other to jointly complete the control of vehicle energy recuperation.

[0096] The memory 11 may be an internal storage unit of the electronic device in some embodiments, such as the hard disk or memory of the electronic device. The memory 11 may also be an external storage device of the electronic device in some other embodiments. Further, the memory 11 may also include both the internal storage unit and the external storage device of the electronic device. The memory 11 is used to store the operating system, application programs, boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 11 may also be used to temporarily store the data that has been output or will be output.

[0097] Embodiment 4

[0098] Further, the present invention also provides a control device for vehicle energy recovery. The control device includes a vehicle controller 01;

[0099] The vehicle controller 01 is configured to obtain the vehicle external environment information and battery information when the current control information of the vehicle meets the preset control conditions; and control the energy recovery of the vehicle based on the vehicle external environment information and the battery information.

[0100] It should be noted that the vehicle controller 01 of the control device for vehicle energy recovery is the same as the vehicle controller mentioned in the embodiment of the control method for vehicle energy recovery above. The control device for vehicle energy recovery is specifically installed in the electronic device (i.e., new energy vehicle) of the foregoing embodiment. The electronic device calls the control device for vehicle energy recovery through a vehicle-end processor (the vehicle-end processor includes the vehicle controller 01), and then runs the specific implementation scheme in the embodiment of the control method for vehicle energy recovery above.

[0101] It can be understood that the vehicle controller is the core electronic control unit for realizing the vehicle control decision of a new energy vehicle. Generally, a new energy vehicle is equipped with a vehicle controller, while a traditional fuel vehicle does not need to be equipped with a vehicle controller. The vehicle controller 01 of this embodiment may include a housing and a hardware circuit.

[0102] Compared with the technical solution of the vehicle controller of a conventional new energy vehicle that collects signals such as the accelerator pedal, gear position, and brake pedal to perform energy recovery, the vehicle controller 01 of this embodiment controls the energy recovery of the new energy vehicle based on the vehicle external environment information and the battery information when it detects that the current control information of the new energy vehicle meets the preset control conditions, without the driver generating a recovery torque by stepping on the pedals of the new energy vehicle, thereby improving the driving comfort of the new energy vehicle during the energy recovery operation.

[0103] Further, in one embodiment, as Figure 4As shown, the control device specifically includes a vehicle controller 01, a battery management system 02, and an adaptive cruise control system 03. The vehicle controller 01, the battery management system 02, and the adaptive cruise control system 03 cooperate with each other to jointly complete the control of vehicle energy recovery.

[0104] The battery management system 02 of this embodiment can mainly consist of single boards such as BMU (Battery Management Unit), BCMS (battery cluster management unit), etc., and parts such as BMSC (Battery Management System Control) and HMI (Human Machine Interface). The BMU and BCMS use CAN communication, and the BCMS and BMS use both Ethernet communication and CAN communication simultaneously to form a dual-loop redundant communication. A network management switch is used to isolate data inside and outside the network to ensure data security.

[0105] The adaptive cruise control system 03 of this embodiment mainly can be composed of an information perception unit (which can include: distance sensors (radars), image sensors, wheel speed sensors, steering angle sensors, etc.), an electronic control unit (ACC control unit ECU), and a human-machine interaction interface, etc.

[0106] Specifically, the vehicle controller 01 of this embodiment is used to send a target request to the adaptive cruise control system 03 when it detects that the current vehicle control information meets the preset control conditions; the preset control conditions can be the control conditions corresponding to turning on the adaptive cruise control function, and the preset control conditions can be set according to the driver's subjective comfortable operation requirements;

[0107] The adaptive cruise control system 03 is used to obtain the external vehicle environment information based on the target request, and generate an adaptive recovery torque and a motor recovery torque threshold based on the external vehicle environment information; specifically, the external vehicle environment information can include information such as the distance between the vehicle and the vehicle in front, traffic light information, and the distance between the vehicle and the pedestrian in front; the adaptive cruise control system 03 can automatically generate a braking speed based on the external vehicle environment information, and then calculate the adaptive recovery torque and the motor recovery torque threshold (i.e., the current allowable recovery torque of the motor) according to the braking speed.

[0108] The battery management system 02 is used to obtain the battery recovery torque threshold according to the battery information. Specifically, the battery information in this embodiment may include the remaining battery power and the battery temperature. In a specific implementation, the battery management system may calculate the battery recovery torque threshold according to the remaining battery power and the battery temperature when the state of charge (SOC) of the battery is less than a preset remaining power threshold (if the SOC is not less than the preset remaining power threshold, it means that the battery power is relatively sufficient, and subsequent energy recovery operations are not required). The preset remaining power threshold can indicate that the remaining power of the vehicle battery is insufficient. When it is determined that the remaining power of the vehicle is insufficient, the current allowable recovery torque of the battery (i.e., the battery recovery torque threshold) can be accurately generated, and the adaptive recovery torque calculated by the adaptive cruise control system 03 will ultimately be converted into a recovery current and charged into the battery pack, avoiding energy recovery when the torque is too large or the remaining battery power is relatively sufficient.

[0109] The vehicle controller 01 is further configured to generate a torque control request according to the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold, and send the torque control request to the motor of the vehicle, so that the motor performs energy recovery according to the adaptive recovery torque. It can be understood that the adaptive recovery torque generated by the adaptive cruise control system 03 will ultimately be converted into a recovery current and charged into the battery pack of the new energy vehicle. When the recovery torque is too large or the battery is fully charged, it is not allowed to be recovered (determined by the battery performance). Therefore, it is necessary to judge the adaptive recovery torque that the adaptive cruise control system 03 is about to generate. When the absolute value of the currently allowable recovery torque of the motor of the new energy vehicle (motor recovery torque threshold) and the absolute value of the currently allowable recovery torque of the battery (battery recovery torque threshold) are both greater than the absolute value of the adaptive recovery torque (calculated by the adaptive cruise control system 03), the vehicle controller 01 sends the torque control request to the motor of the new energy vehicle, so that the motor performs energy recovery according to the adaptive recovery torque.

[0110] It can be understood that most of the scenarios where the driver uses the ACC adaptive cruise function are in the following vehicle conditions on the highway. When the ACC acceleration function is turned on, due to the unstable calculation of the distance to the vehicle ahead, the driver cannot accurately grasp and predict the size of the acceleration and deceleration belts. For safety reasons, more than 90% of the drivers will not use the ACC function. This embodiment can connect the adaptive deceleration function in the adaptive cruise function to the power recovery torque chain of the vehicle, so that the driver can use the adaptive recovery function in other driving scenarios without turning on the adaptive cruise function, improving driving comfort and safety.

[0111] The beneficial effects of this embodiment are as follows: The adaptive cruise system 03 can directly calculate the adaptive recuperation torque based on the external environment information of the vehicle, without the need for the driver to step on the pedal of the vehicle to generate the recuperation torque, which improves the comfort of using the energy recuperation function during the driving of new energy vehicles. It can also avoid the operation requirement of emergency braking due to driver negligence, indirectly improving driving safety. Moreover, the vehicle controller 01 controls the energy recuperation of the vehicle based on the adaptive recuperation torque, the motor recuperation torque threshold, and the battery recuperation torque threshold, further ensuring the energy recuperation efficiency.

[0112] Those skilled in the art can clearly understand that, for the sake of convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiment and will not be elaborated here.

[0113] The embodiment of the present application also provides a storage medium, which is a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented.

[0114] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above-mentioned embodiment methods of this application, a computer program can be used to instruct the relevant hardware to complete. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can at least include: any entity or device capable of carrying the computer program code to an electronic device, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disc, etc. In some jurisdictions, according to legislation and patent practice, the computer-readable medium cannot be an electrical carrier signal and a telecommunication signal.

[0115] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0116] The above-described embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A control method for vehicle energy recovery, characterized in that, The method includes: When the current control information of the vehicle meets the preset control conditions, obtaining the external environment information and battery information of the vehicle; Controlling the energy recovery of the vehicle based on the external environment information and the battery information.

2. The control method according to claim 1, characterized in that, The controlling the energy recovery of the vehicle based on the external environment information and the battery information includes: Obtaining an adaptive recovery torque and a motor recovery torque threshold according to the external environment information; Obtaining a battery recovery torque threshold according to the battery information; Controlling the energy recovery of the vehicle based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold.

3. The control method according to claim 2, characterized in that, The controlling the energy recovery of the vehicle based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold includes: When the absolute value of the adaptive recovery torque is less than the absolute value of the motor recovery torque threshold and the absolute value of the adaptive recovery torque is less than the absolute value of the battery recovery torque threshold, controlling the motor of the vehicle to perform energy recovery according to the adaptive recovery torque.

4. The control method according to claim 3, characterized in that, The control method further includes: When the absolute value of the adaptive recovery torque is greater than the absolute value of the motor recovery torque threshold, and / or, the absolute value of the adaptive recovery torque is greater than the absolute value of the battery recovery torque threshold, outputting a preset prompt message.

5. The control method according to any one of claims 2-4, characterized in that, The obtaining the adaptive recovery torque and the motor recovery torque threshold according to the external environment information includes: When the external environment information meets the preset safety distance detection conditions, determining the current safety distance according to the external environment information; Generating a braking speed of the vehicle according to the current safety distance; Generating an adaptive recovery torque and a motor recovery torque threshold based on the braking speed.

6. The control method according to claim 5, characterized in that, The battery information at least includes the remaining battery power and the battery temperature; The obtaining the battery recovery torque threshold according to the battery information includes: When the remaining battery power is not greater than a preset remaining power threshold, calculating the battery recovery torque threshold according to the remaining battery power and the battery temperature.

7. The control method according to any one of claims 1-6, characterized in that, The preset control conditions include that the current gear of the vehicle is the target gear, the throttle pedal information of the vehicle is the target throttle pedal opening, and the brake pedal information of the vehicle is the target brake pedal opening.

8. The control method according to claim 7, characterized in that, The target gear is the forward gear, the value range of the target throttle pedal opening is the first opening range, and the value range of the target brake pedal is the second opening range.

9. A control device for vehicle energy recovery, characterized in that, The device includes a vehicle controller, The vehicle controller is used to obtain the external environment information and the battery information when the current control information of the vehicle meets the preset control conditions; and control the energy recovery of the vehicle based on the external environment information and the battery information.

10. The control device according to claim 9, characterized in that, The device further includes a battery management system and an adaptive cruise system; The vehicle controller is used to send a target request to the adaptive cruise system when it detects that the current control information of the vehicle meets the preset control conditions; The adaptive cruise system is used to obtain the external environment information based on the target request and generate an adaptive recovery torque and a motor recovery torque threshold based on the external environment information; The battery management system is configured to obtain the battery recovery torque threshold according to the battery information; The vehicle controller is further configured to generate a torque control request based on the adaptive recovery torque, the motor recovery torque threshold, and the battery recovery torque threshold, and send the torque control request to the motor of the vehicle, so that the motor performs energy recovery according to the adaptive recovery torque.

11. An electronic device, comprising a memory, a vehicle-end processor, and a computer program stored in the memory and executable on the vehicle-end processor, characterized in that, When the vehicle-end processor executes the computer program, the method described in any one of claims 1 to 8 is implemented.

12. A storage medium, the storage medium being a computer-readable storage medium, the computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, the method described in any one of claims 1 to 8 is implemented.

Images