A battery energy consumption optimization method, system, device and medium

Abstract

The present application provides a battery energy consumption optimization method, system, device and medium, wherein the method includes the following steps: obtaining the remaining battery power, and when it is determined that the remaining battery power meets the high remaining power preset requirement, collecting the brake pedal flip angle, and determining that when the brake pedal flip angle is greater than a first preset value, entering the pre-energy recovery state; calling the speed limit calibration database, the speed limit calibration database includes: multiple groups of brake pedal flip angle ranges and speed limits corresponding to the brake pedal flip angle ranges; collecting the vehicle speed in real time, and when it is determined that the vehicle speed is less than or equal to the speed limit and the vehicle is in the pre-energy recovery state, starting energy recovery. The battery energy consumption optimization method provided by the present application has the advantages of being able to recover energy at high remaining power and avoiding damage to the battery.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of electric vehicle energy consumption development, and specifically relates to a battery energy consumption optimization method, system, device and medium. Background Art

[0002] With the research and development of pure electric vehicles, new energy vehicles have developed rapidly. At the current stage, the energy consumption of new energy vehicles in my country is generally high, which directly leads to a short range of vehicles, causing great range anxiety for electric vehicle consumers. In order to increase the range of electric vehicles, on the one hand, the range can be increased by maximizing energy conservation, and on the other hand, the range can be increased by recovering energy during braking of electric vehicles.

[0003] Considering the safety risk of lithium plating when charging with high current when the battery has a high remaining charge, most new energy vehicle manufacturers currently prohibit energy recovery when the battery's remaining charge exceeds the set range during vehicle driving when formulating energy recovery strategies. There is an urgent need for a method that can effectively recover energy when the battery has a high remaining charge to further improve energy consumption reduction performance. Summary of the invention

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a battery energy consumption optimization method, system, device and medium to solve the above problems.

[0005] The first aspect of the present application provides a battery energy consumption optimization method, comprising the following steps:

[0006] Acquire the remaining battery power, and when it is determined that the remaining battery power meets the preset requirement of high remaining power, collect the brake pedal flip angle, and when it is determined that the brake pedal flip angle is greater than a first preset value, enter the pre-energy recovery state;

[0007] Calling a speed limit calibration database, the speed limit calibration database comprising: a plurality of brake pedal flip angle ranges and speed limits corresponding to the brake pedal flip angle ranges, the speed limit being a maximum speed that can be reduced to a first preset speed within a set time when the brake pedal is flipped to a corresponding angle range;

[0008] The vehicle speed is collected in real time, and energy recovery is started when it is determined that the vehicle speed is less than or equal to the speed limit and the vehicle is in a pre-energy recovery state.

[0009] According to the technical solution provided in the embodiment of the present application, after starting energy recovery, the following steps are also included:

[0010] Determine the lithium plating current of the battery according to the battery model;

[0011] Collect the current value when performing energy recovery;

[0012] It is determined whether the current value when performing energy recovery is less than the lithium deposition current, and whether to continue to perform energy recovery.

[0013] According to the technical solution provided in the embodiment of the present application, if the current value is less than the lithium deposition current, energy recovery continues; if the current value is greater than the lithium deposition current, energy recovery is stopped.

[0014] According to the technical solution provided in the embodiment of the present application, after the real-time acquisition of the vehicle speed, the following steps are also included:

[0015] When it is determined that the vehicle speed is greater than the speed limit, energy recovery is stopped.

[0016] According to the technical solution provided in the embodiment of the present application, it also includes establishing a braking speed calibration database, and the establishment of the braking speed calibration database includes the following steps:

[0017] Based on the initial state and the first preset angle, a plurality of groups of brake pedal gear positions are determined; wherein the initial state is the state when the brake pedal is not pressed; the brake pedal takes the initial state as the starting point, and each time the first preset angle is turned over, a group of brake pedal gear positions is formed;

[0018] Obtaining the vehicle speed limit corresponding to each set of brake pedal positions;

[0019] Constructing a braking speed sequence, wherein the braking speed sequence includes a plurality of sets of one-to-one corresponding brake pedal positions and vehicle speed limits;

[0020] A braking speed calibration database is constructed according to the braking speed sequence.

[0021] According to the technical solution provided in the embodiment of the present application, the preset requirement for high remaining power is that the remaining battery power satisfies a first power threshold greater than a first power threshold and less than or equal to a second power threshold, the first power threshold and the second power threshold are both greater than 90% and less than 100%, and the first power threshold is less than the second power threshold.

[0022] According to the technical solution provided in the embodiment of the present application, after starting energy recovery, the following steps are also included:

[0023] When it is determined that the remaining battery power is equal to 100%, energy recovery is stopped.

[0024] A second aspect of the present application provides a battery energy consumption optimization system, comprising:

[0025] A power acquisition module is configured to acquire the remaining power of the battery and determine whether the remaining power of the battery meets the preset requirements;

[0026] An angle acquisition module is configured to acquire a brake pedal flip angle, and determine that when the brake pedal flip angle is greater than a first preset value, an energy recovery state is entered;

[0027] A database calling module is configured to call a speed limit calibration database, wherein the speed limit calibration database includes: a plurality of brake pedal flip angle ranges and speed limits corresponding to the brake pedal flip angle ranges, wherein the speed limit is a maximum speed that can be reduced to a first preset speed within a set time when the brake pedal is flipped to a corresponding angle range;

[0028] The vehicle speed collection module is configured to collect the vehicle speed in real time, and start energy recovery when it is determined that the vehicle speed is less than or equal to the speed limit and the vehicle is in a pre-energy recovery state.

[0029] A third aspect of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the battery energy consumption optimization method as described above when executing the computer program.

[0030] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium has a computer program, and when the computer program is executed by a processor, the steps of the battery energy consumption optimization method described above are implemented.

[0031] Compared with the prior art, the beneficial effects of the present application are as follows: by acquiring the remaining power of the battery, the purpose is to distinguish when the battery meets the preset requirements of high remaining power, the optimization method provided by the present application is adopted, and when the battery does not meet the preset requirements of high remaining power, the traditional optimization method is adopted, and the efficiency of energy recovery is improved by controlling the starting conditions of the optimization method provided by the present application; by collecting the flip angle of the brake pedal, it is judged that when the flip angle of the brake pedal is greater than the first preset value, the pre-energy recovery state is entered, the purpose is to determine that the car is in a braking state, and use this as a limiting condition for energy recovery; by collecting the speed of the car in real time, it is judged that the speed of the car is less than or equal to the limit speed and the car is in the pre-energy recovery state, and energy recovery is started, so that the battery meets the appropriate speed conditions and is in the pre-energy recovery state. Energy recovery starts, avoiding the difficulty in controlling the energy recovery process when the speed is too fast, thereby causing battery damage, resulting in safety hazards. The battery energy consumption optimization method provided by the present application has the advantages of being able to recover energy under high remaining power and avoiding damage to the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0033] Figure 1This is a flowchart of the steps in Example 1 of this application;

[0034] Figure 2 This is a flowchart of the steps in Example 2 of this application;

[0035] Figure 3 This is a flowchart of the steps in Example 3 of this application;

[0036] Figure 4 This is a schematic diagram of the brake pedal flip angle structure in this application;

[0037] Figure 5 A schematic diagram of the structure of a terminal device provided for this application. DETAILED DESCRIPTION

[0038] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] Example 1

[0041] Please refer to Figure 1 , the present application provides a battery energy consumption optimization method, comprising the following steps:

[0042] S1: obtaining the remaining battery power, and when it is determined that the remaining battery power meets the preset requirement of high remaining power, collecting the brake pedal flip angle, and determining that when the brake pedal flip angle is greater than a first preset value, entering the pre-energy recovery state;

[0043] S2: calling a speed limit calibration database, wherein the speed limit calibration database includes: a plurality of brake pedal flip angle ranges and speed limits corresponding to the brake pedal flip angle ranges, wherein the speed limit is the maximum speed that can be reduced to a first preset speed within a set time when the brake pedal is flipped to a corresponding angle range;

[0044] S3: Collect the vehicle speed in real time, and start energy recovery when it is determined that the vehicle speed is less than or equal to the speed limit and the vehicle is in a pre-energy recovery state.

[0045] Specifically, in step S1, the high remaining power preset requirement is that the battery remaining power is greater than the first power threshold and less than the second power threshold, and the first power threshold and the second power threshold are both greater than 90% and less than 100%, that is, the high remaining power preset requirement is a range between greater than 90% and less than 100%, and the range size can be modified according to actual conditions. Specifically, the brake pedal flip angle is taken as the initial state when the brake pedal is not pressed. When it is pressed, its flip angle relative to the initial state is the brake pedal flip angle. For details, please refer to Figure 4 .

[0046] Specifically, in step S2, the method for obtaining the speed limit is:

[0047] Dividing the turning angle of the brake pedal into a plurality of turning angle ranges;

[0048] Select one of the flip angle ranges and obtain all flip angles within the flip angle range;

[0049] Calculating a first vehicle speed when the brake pedal is at a certain flip angle and just drops to a first preset speed within a set time, wherein in one embodiment, the first preset vehicle speed is 0;

[0050] Under the same set time, obtain the first vehicle speed corresponding to all flip angles within the current flip angle range;

[0051] All first vehicle speeds corresponding to the current flip angle range are traversed, and the maximum first vehicle speed is determined to be the limited vehicle speed corresponding to the current flip angle range.

[0052] Specifically, the limited vehicle speed corresponding to each rollover angle range is the first vehicle speed corresponding to the maximum rollover angle within the rollover angle range.

[0053] In one embodiment, the first preset value is 0. When the driver steps on the brake pedal, the flip angle of the brake pedal is a first angle and falls within a first angle range. When it is judged that the flip angle of the brake pedal is greater than 0, the system enters a pre-energy recovery state, and no energy recovery is performed at this time. The speed limit calibration database is called to determine that the speed limit corresponding to the first angle range is the first speed limit. During the deceleration process of the vehicle, the vehicle speed is collected in real time. At the beginning, the vehicle speed is greater than the first speed limit, and the vehicle is still in the pre-energy recovery state. When it is judged that the vehicle speed is less than or equal to the first speed limit, energy recovery is started.

[0054] Working principle: By acquiring the remaining power of the battery, the purpose is to distinguish when the battery meets the preset requirements of high remaining power, the optimization method provided by the present application is adopted, and when the battery does not meet the preset requirements of high remaining power, the traditional optimization method is adopted, and the efficiency of energy recovery is improved by controlling the starting conditions of the optimization method provided by the present application; by collecting the flip angle of the brake pedal, it is judged that when the flip angle of the brake pedal is greater than the first preset value, the pre-energy recovery state is entered, the purpose is to determine that the car is in a braking state, and use this as a limiting condition for energy recovery; by collecting the speed of the car in real time, it is judged that when the speed of the car is less than or equal to the limited speed and the car is in the pre-energy recovery state, energy recovery is started, so that energy recovery is started only when the battery meets the appropriate speed conditions and is in the pre-energy recovery state, so as to avoid the energy recovery process being difficult to control when the speed is too fast, thereby causing damage to the battery and causing safety hazards. The battery energy consumption optimization method provided by the present application has the advantages of being able to recover energy under high remaining power and avoiding damage to the battery.

[0055] Example 2

[0056] Please refer to Figure 2 In a preferred embodiment, after starting energy recovery, the following steps are also included:

[0057] S4: Determine the lithium plating current of the battery according to the battery model;

[0058] S5: Collect the current value when performing energy recovery;

[0059] S6: Determine whether the current value during energy recovery is less than the lithium deposition current, and determine whether to continue energy recovery.

[0060] The specific steps include:

[0061] Select different types of batteries and determine the cut-off voltage for each type of battery;

[0062] Conduct lithium deposition test on the battery to obtain the lithium deposition current of the battery;

[0063] Traverse all types of batteries and obtain the lithium plating current of all batteries;

[0064] Constructing a lithium deposition current sequence, wherein the lithium deposition current sequence includes multiple sets of one-to-one corresponding cut-off voltages and lithium deposition currents;

[0065] A lithium deposition current calibration database is constructed according to the lithium deposition current sequence.

[0066] In one embodiment, the battery is selected from five types, namely type 1, type 2, type 3, type 4, and type 5, and the corresponding five lithium precipitation currents are I1, I2, I3, I4, and I5, respectively. The corresponding relationship between the battery model and the lithium precipitation current is shown in Table 1:

[0067] Battery Model Model 1 Model 2 Model 3 Model 4 Model 5 Lithium deposition current <![CDATA[I1]]> <![CDATA[I2]]> <![CDATA[I3]]> <![CDATA[I4]]> <![CDATA[I5]]>

[0068] Table 1

[0069] Determine the battery model, and then determine the lithium plating current of the battery;

[0070] Real-time collection of current values ​​during energy recovery;

[0071] When it is determined that the current value is less than the lithium deposition current, energy recovery continues.

[0072] By real-time acquisition of the current value during energy recovery, when it is determined that the current value is less than the lithium deposition current, energy recovery is continued to prevent the current value from being greater than the lithium deposition current during the energy recovery process, thereby causing a safety hazard to the battery.

[0073] In a preferred embodiment, the following steps are also included:

[0074] When it is determined that the current value is greater than the lithium deposition current, energy recovery is stopped.

[0075] By judging that the current value is less than the lithium deposition current, energy recovery is stopped, so as to prevent the current value from being greater than the lithium deposition current during the energy recovery process, thereby causing a safety hazard to the battery.

[0076] In a preferred embodiment, the following steps are also included:

[0077] When it is determined that the vehicle speed is greater than the speed limit, energy recovery is stopped.

[0078] Specifically, when the brake pedal is pressed, the car slows down and enters the pre-energy recovery state; the flip angle of the brake pedal at that time is obtained, and the flip angle range of the flip angle is determined, and the speed limit corresponding to the current flip angle range is determined; the car speed is obtained in real time, and when it is determined that the car speed is greater than the speed limit corresponding to the current flip angle range, the car is kept in the pre-energy recovery state and no energy recovery is performed.

[0079] By determining that the vehicle speed is greater than the speed limit, energy recovery is stopped, so that when the remaining battery power meets the preset requirements, the conditions for starting energy recovery can be controlled, to avoid damaging the battery charging by maintaining the energy recovery state when the remaining battery power is too high, resulting in safety hazards.

[0080] Example 3

[0081] Please refer to Figure 3 In a preferred embodiment, it further includes establishing a braking speed calibration database, wherein establishing a braking speed calibration database includes the following steps:

[0082] a. Determine multiple groups of brake pedal gear positions based on an initial state and a first preset angle; wherein the initial state is a state when the brake pedal is not pressed; the brake pedal takes the initial state as a starting point, and each time the brake pedal is turned over by the first preset angle, it constitutes a group of brake pedal gear positions;

[0083] b. obtaining the vehicle speed limit corresponding to each set of brake pedal positions;

[0084] c. constructing a braking speed sequence, wherein the braking speed sequence includes multiple sets of one-to-one corresponding brake pedal positions and vehicle speed limits;

[0085] d. Constructing a braking speed calibration database according to the braking speed sequence.

[0086] Specifically, in a certain embodiment, the initial state of the brake pedal forms an angle of 50° with the bottom plate of the vehicle, and the brake pedal flip angle is divided into a flip angle range every 5°, and a total of 10 flip angle ranges are obtained, and the ten flip angle ranges respectively satisfy the following relationship:

[0087] Angle range 1: 0<flip angle ≤ 5°;

[0088] Angle range 2: 5°<flip angle ≤ 10°;

[0089] Angle range 3: 10°<flip angle ≤ 15°;

[0090] Angle range 4: 15°<flip angle ≤ 20°;

[0091] Angle range 5: 20°<flip angle ≤ 25°;

[0092] Angle range 6: 25°<flip angle ≤ 30°;

[0093] Angle range 7: 30°<flip angle ≤ 35°;

[0094] Angle range 8: 35°<flip angle ≤ 40°;

[0095] Angle range 9: 40°<flip angle ≤ 45°;

[0096] Angle range 10: 45°<flip angle ≤ 50°.

[0097] The speed limit corresponding to each rollover angle range is obtained respectively. The corresponding relationship between the 10 rollover angle ranges and the corresponding speed limits is shown in Table 2:

[0098]

[0099] Table 2

[0100] In a preferred embodiment, the high remaining power preset requirement is that the battery remaining power satisfies a first power threshold greater than a first power threshold and less than or equal to a second power threshold, the first power threshold and the second power threshold are both greater than 90% and less than 100%, and the first power threshold is less than the second power threshold.

[0101] Specifically, in one embodiment, the first power threshold is set to 92%, and the second power threshold is set to 98%, that is, the high remaining power preset requirement is a remaining power range greater than 92% and less than 98%.

[0102] Specifically, when it is determined that the remaining battery power meets the high remaining power preset requirement, the battery energy consumption optimization method provided in the present application is used to perform energy recovery to prevent battery damage; when the remaining battery power is lower than the first power threshold, the existing energy recovery strategy is used to perform energy recovery.

[0103] In a preferred embodiment, after starting energy recovery, the following steps are also included:

[0104] When it is determined that the remaining battery power is equal to 100%, energy recovery is stopped.

[0105] By judging that the remaining battery power is equal to 100%, energy recovery is stopped to prevent a malfunction when judging whether the current value is greater than the lithium plating current during energy recovery, resulting in failure to control the stopping of energy recovery in time, causing battery overcharging, and thus prone to safety accidents.

[0106] Example 4

[0107] The present application provides a battery energy consumption optimization system, comprising:

[0108] A power acquisition module is configured to acquire the remaining power of the battery and determine whether the remaining power of the battery meets the preset requirements;

[0109] An angle acquisition module is configured to acquire a brake pedal flip angle, and determine that when the brake pedal flip angle is greater than a first preset value, an energy recovery state is entered;

[0110] A database calling module is configured to call a speed limit calibration database, wherein the speed limit calibration database includes: a plurality of brake pedal flip angle ranges and speed limits corresponding to the brake pedal flip angle ranges, wherein the speed limit is a maximum speed that can be reduced to a first preset speed within a set time when the brake pedal is flipped to a corresponding angle range;

[0111] The vehicle speed collection module is configured to collect the vehicle speed in real time, and start energy recovery when it is determined that the vehicle speed is less than or equal to the speed limit and the vehicle is in a pre-energy recovery state.

[0112] Specifically, the system of this embodiment is used to implement the technical solution of embodiment 1.

[0113] Example 5

[0114] In a preferred embodiment, it also includes:

[0115] A current determination module, configured to determine the lithium plating current of the battery;

[0116] A current acquisition module, configured to acquire current values ​​in real time when energy recovery is performed;

[0117] The processing module is configured to continue energy recovery when it is determined that the current value is less than the lithium deposition current.

[0118] Specifically, the system of this embodiment is used to implement the technical solution of Embodiment 2.

[0119] In a preferred embodiment, the processing module is further configured to stop energy recovery when it is determined that the current value is greater than the lithium plating current.

[0120] In a preferred embodiment, the vehicle speed collection module is further configured to stop energy recovery when it is determined that the vehicle speed is greater than a speed limit.

[0121] Example 6

[0122] The present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that when the processor executes the computer program, the steps of any one of the above-mentioned battery energy consumption optimization methods are implemented.

[0123] like Figure 5 As shown, the terminal device (CPU) 500 includes a central processing unit 501, which can perform various appropriate actions and processes according to the program stored in the system memory (ROM) 502 or the program loaded from the storage part to the random access memory (RAM) 503. In the (RAM) 503, various programs and data required for system operation are also stored. (CPU) 501, (ROM) 502 and (RAM) 503 are connected to each other through a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0124] The following components are connected to the (I / O) interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive is also connected to the (I / O) interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed, so that a computer program read therefrom is installed into the storage section 508 as needed.

[0125] In particular, according to an embodiment of the present invention, the above reference process Figure 1 The described process can be implemented as a computer software program. For example, embodiment 1 of the present invention includes a computer program product, which includes a computer program carried on a computer readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part, and / or installed from a removable medium. When the computer program is executed by a central processing unit (CPU) 501, the above-mentioned functions defined in the system of the present application are executed.

[0126] Example 7

[0127] The present application provides a computer-readable storage medium, wherein the computer-readable storage medium has a computer program, characterized in that when the computer program is executed by a processor, the steps of any one of the above-mentioned battery energy consumption optimization methods are implemented.

[0128] It should be noted that the computer-readable medium shown in the present invention may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media 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 or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present invention, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0129] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0130] The units involved in the embodiments of the present invention may be implemented by software or hardware, and the units described may also be arranged in a processor. The names of these units do not, in some cases, limit the units themselves. The units or modules described may also be arranged in a processor, such as a current determination module, a current acquisition module, and a processing module. The names of these units or modules do not, in some cases, limit the units or modules themselves.

[0131] As another aspect, the present application also provides a computer-readable medium, which may be included in the electronic device described in the above embodiment; or may exist independently without being assembled into the electronic device. The above computer-readable medium carries one or more programs, and when the above one or more programs are executed by an electronic device, the electronic device implements the battery energy consumption optimization method in the above embodiment.

[0132] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A battery energy consumption optimization method, characterized in that: The following steps are involved: Acquire the remaining battery power, and when it is determined that the remaining battery power meets the preset requirement of high remaining power, collect the brake pedal flip angle, and when it is determined that the brake pedal flip angle is greater than a first preset value, enter the pre-energy recovery state; Calling a speed limit calibration database, the speed limit calibration database comprising: a plurality of brake pedal flip angle ranges and speed limits corresponding to the brake pedal flip angle ranges, the speed limit being a maximum speed that can be reduced to a first preset speed within a set time when the brake pedal is flipped to a corresponding angle range; The vehicle speed is collected in real time, and energy recovery is started when it is determined that the vehicle speed is less than or equal to the speed limit and the vehicle is in a pre-energy recovery state.

2. The battery energy consumption optimization method according to claim 1, characterized in that: After the energy recovery is started, the following steps are also included: Determine the lithium plating current of the battery according to the battery model; Collect the current value when performing energy recovery; It is determined whether the current value when performing energy recovery is less than the lithium deposition current, and whether to continue to perform energy recovery.

3. The battery energy consumption optimization method according to claim 2, characterized in that: If the current value is less than the lithium deposition current, energy recovery continues; if the current value is greater than the lithium deposition current, energy recovery is stopped.

4. The battery energy consumption optimization method according to any one of claims 1 to 3, characterized in that: After the real-time acquisition of the vehicle speed, the following steps are also included: When it is determined that the vehicle speed is greater than the speed limit, energy recovery is stopped.

5. The battery energy consumption optimization method according to any one of claims 1 to 3, characterized in that: The method further includes establishing a braking vehicle speed calibration database, wherein the establishing of the braking vehicle speed calibration database includes the following steps: Based on the initial state and the first preset angle, a plurality of groups of brake pedal gear positions are determined; wherein the initial state is the state when the brake pedal is not pressed; the brake pedal takes the initial state as the starting point, and each time the first preset angle is turned over, a group of brake pedal gear positions is formed; Obtaining the vehicle speed limit corresponding to each set of brake pedal positions; Constructing a braking speed sequence, wherein the braking speed sequence includes a plurality of sets of one-to-one corresponding brake pedal positions and vehicle speed limits; A braking speed calibration database is constructed according to the braking speed sequence.

6. The battery energy consumption optimization method according to any one of claims 1 to 3, characterized in that: The preset requirement for the high remaining power is that the remaining battery power satisfies a first power threshold value and is less than or equal to a second power threshold value, the first power threshold value and the second power threshold value are both greater than 90% and less than 100%, and the first power threshold value is less than the second power threshold value.

7. The battery energy consumption optimization method according to claim 1, characterized in that: After the energy recovery is started, the following steps are also included: When it is determined that the remaining battery power is equal to 100%, energy recovery is stopped.

8. A battery energy consumption optimization system, characterized in that: include: A power acquisition module is configured to acquire the remaining power of the battery and determine whether the remaining power of the battery meets the preset requirements; An angle acquisition module is configured to acquire a brake pedal flip angle, and determine that when the brake pedal flip angle is greater than a first preset value, an energy recovery state is entered; A database calling module is configured to call a speed limit calibration database, wherein the speed limit calibration database includes: a plurality of brake pedal flip angle ranges and speed limits corresponding to the brake pedal flip angle ranges, wherein the speed limit is a maximum speed that can be reduced to a first preset speed within a set time when the brake pedal is flipped to a corresponding angle range; The vehicle speed collection module is configured to collect the vehicle speed in real time, and start energy recovery when it is determined that the vehicle speed is less than or equal to the speed limit and the vehicle is in a pre-energy recovery state.

9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the battery energy consumption optimization method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, the computer-readable storage medium having a computer program, characterized in that: When the computer program is executed by a processor, the steps of the battery energy consumption optimization method according to any one of claims 1 to 7 are implemented.

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