Battery residual value determination method and device, readable storage medium and electronic equipment

Abstract

The invention provides a battery residual value determination method and device, a readable storage medium and electronic equipment, and the method comprises the steps: obtaining a battery residual value calculation parameter after the charging of a battery is completed, the battery residual value calculation parameters comprise the rated capacity C0 when the battery leaves a factory, the battery residual capacity C1 at the last charging ending moment, the battery electric quantity percentage SOC at the current charging ending moment, the last charging ending time t1, the current charging starting time t2, the current charging ending time t3 and the current value I; and calculating a battery residual value according to a specified formula based on the battery residual value calculation parameter, and displaying the battery residual value. The battery residual value of the vehicle can be visually displayed in real time, and a user can know the use condition of the battery of the vehicle, so that the value of the vehicle can be accurately evaluated.

Description

Technical Field

[0001] The technical field of battery performance evaluation of the present application particularly relates to a method, device, readable storage medium and electronic device for determining a battery residual value. Background Art

[0002] The residual value of a power battery mainly refers to the ability of the current battery to store electrical energy relative to a new battery. It expresses the state of the battery from the beginning to the end of its life in the form of a percentage, and is used to quantitatively describe the current performance status of the battery.

[0003] Currently, for new energy vehicles, the value of the vehicle is often assessed based on information such as the vehicle's mileage and year of purchase. This method of judgment is less effective and differs greatly from the actual vehicle status. The value assessment of used new energy vehicles is inaccurate, affecting the success rate of transactions. A big reason for this is the lack of a complete and effective power battery residual value assessment system.

[0004] In the prior art, users cannot intuitively understand the performance status of the power battery of new energy vehicles, and can only indirectly judge the performance of the battery by the mileage that the vehicle can travel when fully charged. This method affects the judgment of the vehicle when users purchase a used new energy vehicle because they cannot intuitively see the actual battery status of the vehicle they are interested in, thereby reducing the success rate of vehicle transactions. Summary of the invention

[0005] The present application provides a method, device, readable storage medium and electronic device for determining a battery residual value to solve the above technical problems.

[0006] According to a first aspect of the present application, a method for determining a battery residual value is provided, comprising:

[0007] After the battery charging is completed, the battery residual value calculation parameters are obtained, and the battery residual value calculation parameters include: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging, and the current value I;

[0008] Calculate the battery residual value based on the battery residual value calculation parameter,

[0009] The battery residual value is displayed.

[0010] In some embodiments, calculating the battery residual value based on the battery residual value calculation parameter includes:

[0011] The battery residual value is calculated using the following formula:

[0012]

[0013] In some embodiments, the method further comprises:

[0014] The battery residual value and battery charging record are saved.

[0015] In some embodiments, the method further comprises:

[0016] Optimizing the calculated battery residual value to obtain an optimized battery residual value;

[0017] The displaying of the battery residual value comprises:

[0018] The optimized battery residual value is displayed.

[0019] In some embodiments, the optimizing the calculated battery residual value includes:

[0020] Calculate the average value of the battery residual value calculated for N consecutive times, where N is an integer and 10≤N≤20;

[0021] The average value is taken as the optimized battery residual value.

[0022] In some embodiments, the optimizing the calculated battery residual value includes:

[0023] Determine whether the battery residual value calculated this time is reduced by more than a specified threshold value compared with the battery residual value calculated last time;

[0024] If it is greater than the specified threshold, the battery residual value calculated based on the last calculated battery residual value when the reduction amplitude value is the specified threshold is used as the optimized battery residual value.

[0025] In some embodiments, the specified threshold is 1%.

[0026] In some embodiments, the method further comprises:

[0027] Counting the number of times the battery residual value continuously decreases by a magnitude greater than the specified threshold;

[0028] When the reduction amplitude value is greater than the specified threshold for M consecutive times, a preset prompt message is sent to the user, where M is an integer and 3≤M≤8.

[0029] In some embodiments, before obtaining the battery residual value calculation parameter, the method further includes:

[0030] Get the number of times the battery has been charged;

[0031] Determining whether the number of times the battery has been charged is greater than a first preset threshold;

[0032] If it is not greater than the first preset threshold, the battery residual value is displayed as 100%.

[0033] In some embodiments, the first preset threshold is an integer greater than or equal to 10 and less than or equal to 15.

[0034] According to a second aspect of the present application, a device for determining a battery residual value is provided, the device comprising:

[0035] The parameter acquisition module is configured to acquire the battery residual value calculation parameters after the battery charging is completed, wherein the battery residual value calculation parameters include: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging, and the current value I;

[0036] a residual value calculation module, configured to calculate a battery residual value based on the battery residual value; and

[0037] The residual value display control module is configured to display the battery residual value.

[0038] According to the third aspect of the present application, an electronic device is provided, comprising: a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the above-mentioned method for determining the battery residual value.

[0039] According to a fourth aspect of the present application, a readable storage medium is provided, characterized in that the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the above-mentioned method for determining the battery residual value are implemented.

[0040] In summary, the method, device, readable storage medium and electronic device for determining the battery residual value provided by the present application have at least the following beneficial effects:

[0041] This application obtains the battery residual value calculation parameters after each battery charging, mainly including: the rated capacity C0 of the battery when it leaves the factory, the remaining battery capacity C1 at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging, and the current value I, and then calculates the battery residual value SLV based on these parameters, so that users can check the vehicle battery residual value at any time. The battery residual value determination method of this application allows users to intuitively view the battery residual value of the vehicle, thereby making a more accurate assessment of the value of new energy vehicles, and greatly improving the transaction rate of second-hand new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 A flowchart of a first embodiment of a method for determining a battery residual value provided in an embodiment of the present application;

[0044] Figure 2 A schematic diagram of battery charging and discharging time nodes provided in an embodiment of the present application;

[0045] Figure 3 A schematic diagram of a method for determining a battery residual value provided in an embodiment of the present application;

[0046] Figure 4 A flowchart of a second embodiment of a method for determining a battery residual value provided in an embodiment of the present application;

[0047] Figure 5 A structural diagram of a battery residual value determination device provided in an embodiment of the present application;

[0048] Figure 6 A structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to make the above and other features and advantages of the present application more clear, the present application is further described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are only exemplary and not restrictive.

[0050] In the following description, many specific details are set forth to provide a thorough understanding of the present application. However, it is apparent to those skilled in the art that specific details need not be adopted to practice the present application. In other cases, well-known steps or operations are not described in detail to avoid blurring the present application.

[0051] The method for determining the battery residual value provided in the embodiment of the present application can be executed by the device for determining the battery residual value provided in the embodiment of the present application, and the device can be configured in an electronic device.

[0052] Reference Figure 1 As shown, the present application provides a method for determining a battery residual value, which includes steps 110-130.

[0053] Step 110, after the battery charging is completed, the battery residual value calculation parameters are obtained, and the battery residual value calculation parameters include: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging, and the current value I.

[0054] In the embodiment of the present application, the battery residual value is calculated once each time the battery is fully charged.

[0055] See attached Figure 2 As shown, it is a schematic diagram of battery charging and discharging time nodes, wherein the last charge is represented by "Charge 1" and this charge is represented by "Charge 2". The remaining battery capacity C1 at the end of the last charge is the battery capacity at the end of Charge 1, that is, C1 is the battery capacity at time t1. The start time t2 of this charge is also the end time t2 of the last discharge. The end time t3 of this charge indicates the time when this charge is completed and the power is not used. In addition, the battery power percentage at the end of this charge is defined as SOC (state of charge). I is the current value at any time from t1 to t2 and from t2 to t3. In this application, the charging and discharging currents are represented by the same letter I, where a positive value represents a discharge current signal and a negative value represents a charging current signal.

[0056] It is understandable that the embodiment of the present application saves the battery charging record and the information related to the battery residual value each time charging is completed and the battery residual value is calculated. The saved battery charging record includes: charging start time, charging end time, discharge start time, discharge end time, battery capacity at the end of charging, etc. The saved battery residual value includes the battery residual value calculated each time, and may also include the battery residual value calculation time, etc.

[0057] Step 120: Calculate the battery residual value based on the battery residual value calculation parameters.

[0058] In one embodiment, the battery residual value can be calculated using the following formula:

[0059]

[0060] Among them, SLV[%] is the residual value of the battery.

[0061] It is understandable that this application combines multiple consecutive charges into one charge and multiple consecutive discharges into one discharge process. During this period, the calculated value of the vehicle shutdown time is 0, and the process will be ignored by default. Therefore, the calculation result of the battery residual value is not affected by the shutdown time.

[0062] Step 130: display the battery residual value.

[0063] In one implementation, the battery residual value can be displayed on the vehicle-side display device, that is, the battery residual value calculation result is sent to the vehicle-side display device, and the vehicle battery residual value is displayed in real time on the vehicle-side display device. In another real-time method, the battery residual value calculation result can also be sent to the cloud, and the user can view the battery residual value of the vehicle saved in the cloud. For example, through the mobile terminal APP, the cloud can request to view the battery residual value, and the cloud can send the battery residual value to the mobile terminal, or the calculated battery residual value can be updated in real time on the mobile terminal through settings without actively requesting it to the cloud.

[0064] This application obtains the battery residual value calculation parameters after the battery charging is completed, mainly including: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging and the current value I, and then calculates the battery residual value SLV based on these battery residual value calculation parameters using a specified formula. The SLV can be displayed to the user, and the user can intuitively view the battery residual value, thereby making a more accurate assessment of the value of new energy vehicles, thereby greatly improving the transaction rate of second-hand new energy vehicles.

[0065] See attached Figure 3 As shown, in the present application, the battery residual value calculation process can be performed by the vehicle controller VCU, wherein the battery residual value calculation parameters can be obtained from the battery management system (BMS). Figure 3 The charge and discharge process memory in the controller includes: charge start time, charge end time, discharge start time and discharge end time. Figure 3 The charge and discharge current in corresponds to the above current value I. The calculated battery residual value can be uploaded to the cloud, and then sent to the user via the cloud, for example, to the corresponding application on the user's mobile phone, so that the user can view the battery residual value in real time.

[0066] from Figure 3 It can be seen that the battery residual value calculated by the battery residual value determination method of the above embodiment can be further optimized and then output. The specific result optimization process is described in the following embodiment.

[0067] See attached Figure 4 The flowchart of the second embodiment of the method for determining the residual value of a battery of the present application is shown, and the method includes steps 410-460.

[0068] Step 410: After the battery is charged, determine whether the number of times the battery has been charged is greater than a first preset threshold. If it is not greater than the first preset threshold, display the battery residual value as 100%.

[0069] It is understandable that the battery loss when it is just leaving the factory is negligible. In order to improve the user experience and avoid unnecessary calculations, this application sets the battery residual value after the first ten charges before leaving the factory (part of it may be the car factory) to 100% by default. The specific number of times can be adjusted according to the manufacturer or vehicle situation. For example, the number can be set to an integer greater than or equal to 10 and less than or equal to 15.

[0070] For example, when the first preset threshold is set to 10, when the battery residual value needs to be calculated (after charging is completed), the number of times the battery has been charged is first obtained to determine whether the number of times the battery has been charged is greater than 10. If it is not greater than 10, it indicates that the number of times the battery has been charged is within the range of the first ten times, and the battery residual value is displayed as 100%; if it is greater than 10, execute step 420.

[0071] Step 420, obtaining battery residual value calculation parameters, the battery residual value calculation parameters include: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charge, the battery power percentage SOC at the end of this charge, the end time t1 of the last charge, the start time t2 of this charge, the end time t3 of this charge, and the current value I.

[0072] Step 430, calculating the battery residual value based on the battery residual value calculation parameter,

[0073] In one implementation, the battery residual value can be calculated according to the following formula:

[0074]

[0075] Step 440, saving the battery residual value and battery charging record.

[0076] In the above embodiment of the present application, the stored battery residual value includes the battery residual value calculated in step 430 .

[0077] Step 450 , optimizing the calculated battery residual value to obtain an optimized battery residual value.

[0078] In one embodiment, the optimizing process of the calculated battery residual value includes:

[0079] An average value of the battery residual value calculated for N consecutive times is calculated, and the average value is used as the optimized battery residual value, wherein N is an integer and 10≤N≤20.

[0080] For example, in order to avoid the display result of the battery residual value from fluctuating or changing too frequently, and to ensure the accuracy of the calculation result, the present application can calculate the average value based on the stored battery residual value information as the battery residual value displayed this time, for example, reading the battery residual value calculated at the end of the last 10 consecutive charging and discharging processes, and then calculating the average value of the battery residual values ​​of these 10 consecutive times, and finally using the average value as the battery residual value displayed this time.

[0081] In another embodiment, the optimizing process of the calculated battery residual value includes:

[0082] Determine whether the reduction value of the battery residual value calculated this time is greater than a specified threshold value compared with the battery residual value calculated last time; if it is greater than the specified threshold value, the battery residual value calculated based on the battery residual value calculated last time when the reduction value is the specified threshold value is used as the optimized battery residual value.

[0083] In an exemplary embodiment, the specified threshold value may be 1%. For example, the battery residual value is updated after each charging, and the magnitude of each update is not greater than 1%. When the battery residual value calculated this time decreases by more than 1% compared with the battery residual value calculated last time, the battery residual value calculated last time decreases by 1% as the optimized battery residual value, otherwise, the battery residual value calculated this time is displayed to the user as the displayed battery residual value.

[0084] In some further embodiments, the method further comprises:

[0085] Counting the number of times the battery residual value continuously decreases by a magnitude greater than the specified threshold;

[0086] When the reduction amplitude value is greater than the specified threshold for M consecutive times, a preset prompt message is sent to the user, where M is an integer and 3≤M≤8.

[0087] For example, the preferred value of M is 5. When the battery residual value decreases by more than a specified threshold for 5 consecutive times compared to the previous value, a preset prompt message is sent to the user indicating improper battery use or a large battery drop, and a method for correct battery use / maintenance can also be sent. The embodiments of the present application do not limit the specific content sent.

[0088] Step 460: display the optimized battery residual value.

[0089] The above-mentioned embodiment of the present application aims at the relationship between the number of times the vehicle is charged after leaving the factory and the first preset threshold, avoiding redundant calculations and improving the user experience. By saving the battery residual value and the battery charging record, the continuous update process of the battery residual value is facilitated; by counting the average value of the battery residual value calculated N times in a row as the battery residual value displayed this time, the display result is more accurate. Based on the statistics of the battery residual value reduction amplitude reaching the specified threshold for M consecutive times, it can be determined that the battery is abnormal, or the user's behavior habits of using the battery are abnormal, so as to send a preset prompt message to the user to regulate the user's driving habits or charging habits.

[0090] The present application embodiment provides a device for determining a battery residual value, as shown in the attached Figure 5 As shown, the device includes: a parameter acquisition module 510, a residual value calculation module 520, and a residual value display control module 530.

[0091] The parameter acquisition module 510 is configured to obtain battery residual value calculation parameters after the battery charging is completed. The battery residual value calculation parameters include: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging, and the current value I.

[0092] The residual value calculation module 520 is configured to calculate the battery residual value based on the battery residual value calculation parameter.

[0093] In one embodiment, the battery residual value can be calculated according to the following formula:

[0094]

[0095] And, the residual value display control module 530 is configured to display the battery residual value.

[0096] In one optional embodiment, the device further includes:

[0097] The storage module is used to store the battery residual value and the battery charging record.

[0098] In one optional embodiment, the device further includes:

[0099] The optimization processing module is used to optimize the calculated battery residual value to obtain the optimized battery residual value. The specific optimization processing method is described in the above embodiment and will not be repeated here.

[0100] In one optional embodiment, the device further includes:

[0101] A statistics module, used to count the number of times the battery residual value continuously decreases by a magnitude greater than the specified threshold;

[0102] The prompt module is used to send a preset prompt message to the user when the number of times counted by the statistical module reaches M times, where M is an integer and 3≤M≤8.

[0103] In one optional embodiment, the device further includes:

[0104] The judgment module is used to judge whether the charging order of the battery is greater than a first preset threshold, and if it is not greater than the first preset threshold, control the residual value display control module 530 to display the battery residual value as 100%. The first preset threshold can be set as needed, for example, set to an integer greater than or equal to 10 and less than or equal to 15.

[0105] It should be understood that the specific features, operations and details described hereinabove with respect to the method of the present application may also be similarly applied to the device and system of the present application, or vice versa. In addition, each step of the method of the present application described above may be performed by a corresponding component or unit of the device or system of the present application.

[0106] It should be understood that each module / unit of the system of the present application can be implemented in whole or in part by software, hardware, firmware or a combination thereof. Each module / unit can be embedded in the processor of the electronic device or independent of the processor in the form of hardware or firmware, or can be stored in the memory of the electronic device in the form of software for the processor to call to perform the operation of each module / unit. Each module / unit can be implemented as an independent component or module, or two or more modules / units can be implemented as a single component or module.

[0107] like Figure 6 As shown, the present application provides an electronic device 600, which includes a processor 610 and a memory 620 storing computer program instructions. When the processor 610 executes the computer program instructions, each step of the above-mentioned method for determining the residual value of the battery is implemented. The electronic device 600 can be generally a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities.

[0108] In one embodiment, the electronic device 600 may include a processor, a memory, a network interface, a communication interface, etc. connected through a system bus. The processor of the electronic device 600 may be used to provide necessary computing, processing and / or control capabilities. The memory of the electronic device 600 may include a non-volatile storage medium and an internal memory. The non-volatile storage medium may store an operating system, a computer program, etc. The internal memory may provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the electronic device 600 may be used to connect and communicate with external devices through a network. When the computer program is executed by the processor, the steps of the method of the present application are executed.

[0109] The present application provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the above-mentioned method for determining the residual value of a battery is implemented.

[0110] Those skilled in the art will appreciate that the method steps of the present application can be completed by instructing related hardware such as the electronic device 600 or a processor through a computer program, and the computer program can be stored in a non-temporary computer-readable storage medium, and the computer program causes the steps of the present application to be executed when it is executed. Depending on the circumstances, any reference to memory, storage, or other media herein may include non-volatile or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0111] The various technical features described above can be combined arbitrarily. Although all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining a battery residual value, characterized in that: include: After the battery charging is completed, the battery residual value calculation parameters are obtained, and the battery residual value calculation parameters include: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging, and the current value I; Calculating the battery residual value based on the battery residual value calculation parameter; The battery residual value is displayed.

2. The method according to claim 1, characterized in that The calculating the battery residual value based on the battery residual value calculation parameter comprises: The battery residual value is calculated using the following formula:

3. The method according to claim 1, characterized in that The method further comprises: The battery residual value and battery charging record are saved.

4. The method according to claim 1, characterized in that: The method further comprises: Optimizing the calculated battery residual value to obtain an optimized battery residual value; The displaying of the battery residual value comprises: The optimized battery residual value is displayed.

5. The method according to claim 4, characterized in that The optimizing process of the calculated battery residual value includes: Calculate the average value of the battery residual value calculated for N consecutive times, where N is an integer and 10≤N≤20; The average value is taken as the optimized battery residual value.

6. The method according to claim 4, characterized in that The optimizing process of the calculated battery residual value includes: Determine whether the battery residual value calculated this time is reduced by more than a specified threshold value compared with the battery residual value calculated last time; If it is greater than the specified threshold, the battery residual value calculated based on the last calculated battery residual value when the reduction amplitude value is the specified threshold is used as the optimized battery residual value.

7. The method according to claim 6, characterized in that The specified threshold is 1%.

8. The method according to claim 6, characterized in that The method further comprises: Counting the number of times the battery residual value continuously decreases by a magnitude greater than the specified threshold; When the reduction amplitude value is greater than the specified threshold for M consecutive times, a preset prompt message is sent to the user, where M is an integer and 3≤M≤8.

9. The method according to any one of claims 1 to 3, characterized in that: Before obtaining the battery residual value calculation parameters, the method further includes: Get the number of times the battery has been charged; Determining whether the number of times the battery has been charged is greater than a first preset threshold; If it is not greater than the first preset threshold, the battery residual value is displayed as 100%.

10. The method according to claim 9, characterized in that The first preset threshold is an integer greater than or equal to 10 and less than or equal to 15.

11. A device for determining a battery residual value, characterized in that: include: The parameter acquisition module is configured to acquire the battery residual value calculation parameters after the battery charging is completed, wherein the battery residual value calculation parameters include: the rated capacity C0 of the battery when it leaves the factory, the remaining capacity C1 of the battery at the end of the last charging, the battery power percentage SOC at the end of this charging, the end time t1 of the last charging, the start time t2 of this charging, the end time t3 of this charging, and the current value I; a residual value calculation module, configured to calculate a battery residual value based on the battery residual value, The residual value display control module is configured to display the battery residual value.

12. An electronic device, characterized in that: include: A processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method for determining the residual value of a battery as described in any one of claims 1 to 10.

13. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the method for determining the battery residual value according to any one of claims 1 to 10 are implemented.

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