WO2023116518A1

WO2023116518A1 - Method for displayed soc value of battery to perform following, and related apparatus

Info

Publication number: WO2023116518A1
Application number: PCT/CN2022/138882
Authority: WO
Inventors: 张君伟; 康文蓉; 王印
Original assignee: 长城汽车股份有限公司
Priority date: 2021-12-22
Filing date: 2022-12-14
Publication date: 2023-06-29
Also published as: CN115113058A

Abstract

A method for a displayed SOC value of a battery to perform following, and a related apparatus. The method comprises: when it is monitored that a difference value between an actual SOC value and a displayed SOC value of a battery at a target moment is greater than a first preset threshold value, determining an SOC following target value on the basis of the actual SOC value and the displayed SOC value at the target moment; according to the actual SOC value at the current moment and the change rate thereof, a displayed SOC value at the previous moment, and the SOC following target value, calculating the change rate of a displayed SOC value which corresponds to the current moment, and taking the change rate as a first change rate; and updating the displayed SOC value at the current moment according to the displayed SOC value of the battery at the previous moment, and the first change rate at the current moment. By means of the solution, in the present application, the change rate of a displayed SOC can be dynamically calculated in combination with an actual SOC value and the change rate thereof, and a following target value, such that the problem of a displayed SOC value jumping can be avoided, and a following effect of the displayed SOC value can also be improved.

Description

Battery display SOC value following method and related device

This patent application claims priority to Chinese Patent Application No. CN202111584260.4 filed on December 22, 2021. The disclosure of the prior application is incorporated by reference in its entirety into this application.

technical field

The present application relates to the technical field of batteries, and in particular to a method for following a battery display SOC value and a related device.

Background technique

In the battery management system, SOC (State Of Charge, the remaining power, also known as the state of charge or the state of charge of the battery, refers to the difference between the remaining dischargeable power and the fully charged battery after the battery has been used for a period of time or kept for a long time. The ratio of electricity, usually expressed as a percentage), the accuracy of the estimated value is very important, and it is often necessary to correct the estimated value of the SOC in real time through an optimization algorithm to ensure the accuracy of the SOC. During the correction process, the actual SOC value of the battery will jump with the correction. However, the SOC value seen by the user cannot jump, otherwise it will cause driving anxiety. In order to solve this problem, two SOC values are often included in the SOC estimation algorithm: one is the actual SOC value of the battery, and the other is the displayed SOC value provided to the user. The SOC value should follow the actual actual SOC value at a certain rate of change until the two are consistent.

In the prior art, when calculating the following rate, it is often followed at a constant rate in stages based on the difference between the actual SOC value and the displayed SOC value. There are two disadvantages in this way: one is that following the actual SOC value in stages based on the difference will cause the following speed to jump during the periodical switching; In discharge condition, the following effect is not good.

technical problem

The present application provides a battery display SOC value following method and a related device to solve the problem of poor follow-up effect of the displayed SOC value.

technical solution

In the first aspect, the present application provides a method for following the battery display SOC value, including:

If it is monitored that the difference between the actual SOC value corresponding to the target moment and the displayed SOC value of the battery is greater than the first preset threshold, then determine the SOC follow-up target value based on the actual SOC value and the displayed SOC value at the target moment;

According to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the rate of change of the actual SOC value at the current moment, calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first change Rate;

Update the displayed SOC value at the current moment according to the displayed SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the displayed SOC value corresponds to the actual SOC value at this moment when it reaches the SOC tracking target value. The SOC value remains the same.

In a possible implementation manner, the determining the SOC following target value based on the actual SOC value and the displayed SOC value at the target moment includes:

If the battery is in a charging state, the larger value of the actual SOC value corresponding to the target moment and the displayed SOC value is used as the charging follow target value;

Adding the charging following target value to a first preset offset value to obtain the SOC following target value.

If the battery is in a discharge state, the smaller value of the actual SOC value corresponding to the target moment and the displayed SOC value is used as the discharge follow target value;

The second preset offset value is subtracted from the discharge follow target value to obtain the SOC follow target value.

In a possible implementation manner, the display value corresponding to the current moment is calculated according to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC follow-up target value, and the change rate of the actual SOC value at the current moment. The rate of change of the SOC value, and as the first rate of change, includes:

subtracting the actual SOC value at the current moment from the SOC following target value to obtain a first difference;

Subtracting the SOC following target value from the displayed SOC value at the previous moment to obtain a second difference;

dividing the first difference by the second difference to obtain the following gain at the current moment;

According to the following gain at the current moment and the rate of change of the actual SOC value at the current moment, the first rate of change corresponding to the current moment is calculated.

In a possible implementation manner, according to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC follow-up target value, and the rate of change of the actual SOC value at the current moment, the corresponding SOC at the current moment is calculated. Before displaying the rate of change of the SOC value, the method further includes:

formula based

, to obtain the rate of change of the actual SOC value of the battery at the current moment;

Among them, Vz _t represents the change rate of the actual SOC value corresponding to time t , ∆ t represents the single-cycle time, C _t represents the battery capacity corresponding to time t , and I _t represents the battery current corresponding to time t .

In a possible implementation manner, the calculating the first rate of change corresponding to the current moment according to the following gain at the current moment and the rate of change of the actual SOC value at the current moment includes:

If the battery is in a charged state, calculate the first rate of change corresponding to the current moment according to the formula Vx _t = K _t * Vz _t ;

If the battery is in a discharge state, calculate the first rate of change corresponding to the current moment according to the formula Vx _t =-K _t * Vz _t ;

Wherein, Vx _t represents the first rate of change corresponding to time t , K _t represents the following gain corresponding to time t , and Vz _t represents the rate of change of the actual SOC value corresponding to time t .

In the second aspect, the present application provides a battery display SOC value following device, including:

The following target value calculation module is configured to determine the battery based on the actual SOC value at the target time and the displayed SOC value if the difference between the actual SOC value corresponding to the target time and the displayed SOC value is greater than the first preset threshold. SOC follows the target value;

The first change rate calculation module is configured to calculate the display SOC corresponding to the current moment according to the actual SOC value at the current moment, the display SOC value at the previous moment, the SOC follow-up target value, and the change rate of the actual SOC value at the current moment The rate of change of the value, and as the first rate of change;

The display SOC value updating module is configured to update the display SOC value at the current moment according to the display SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the display SOC value follows after reaching the SOC The target value is consistent with the actual SOC value corresponding to this moment.

In a possible implementation manner, the following target value calculation module is specifically configured as:

In a possible implementation, the first rate-of-change calculation module includes:

The first difference calculation unit is configured to subtract the actual SOC value at the current moment from the SOC following target value to obtain a first difference;

The second difference calculation unit is configured to subtract the displayed SOC value at the previous moment from the SOC following target value to obtain a second difference;

a following gain calculation unit configured to divide the first difference by the second difference to obtain the following gain at the current moment;

The first rate-of-change calculation unit is configured to calculate the first rate-of-change corresponding to the current moment according to the following gain at the current moment and the rate of change of the actual SOC value at the current moment.

In a possible implementation manner, the device for following the battery display SOC value provided by the present application further includes an actual SOC rate of change acquisition module, and the actual SOC rate of change acquisition module is configured to:

formula based

In a possible implementation manner, the first rate-of-change calculation unit is specifically configured as:

In a third aspect, the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the above Steps in the method described in any possible implementation manner of the first aspect.

In the fourth aspect, the embodiment of the present application provides a non-volatile computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any one of the above first aspects can be realized. Steps of the method described in a possible implementation manner.

In a fifth aspect, an embodiment of the present application provides a car, which includes the electronic device described in the third aspect above.

Beneficial effect

The embodiment of the present application provides a battery display SOC value following method and related devices. When the method detects that the difference between the actual SOC value corresponding to the target time of the battery and the displayed SOC value is greater than the first preset threshold, based on the The actual SOC value and the displayed SOC value at the target time determine the SOC following the target value; then according to the actual SOC value at the current time, the displayed SOC value at the previous time, the SOC following the target value and the actual SOC value at the current time. Calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first rate of change; finally update the displayed SOC value at the current moment according to the displayed SOC value of the battery at the previous moment and the first rate of change at the current moment, so that When the displayed SOC value reaches the SOC following target value, it is consistent with the actual SOC value corresponding to this moment. Through the above solution, the present application can dynamically calculate and display the SOC change rate in combination with the actual SOC value and its change rate, and follow the target value, so as to avoid the jumping problem of the displayed SOC value and improve the follow-up effect of the displayed SOC value.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

FIG. 1 is a flow chart of the implementation of the battery display SOC value following method provided by the embodiment of the present application;

Fig. 2 is a schematic structural diagram of a battery display SOC value follower device provided by an embodiment of the present application;

Fig. 3 is a schematic diagram of an electronic device provided by an embodiment of the present application.

Embodiments of the present invention

In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

In order to make the purpose, technical solution and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the implementation flow of the battery display SOC value following method provided by the embodiment of the present application. The execution subject (electronic device) of this method can be a battery management system, and the details are as follows:

S101: If it is detected that the difference between the actual SOC value corresponding to the target time and the displayed SOC value of the battery is greater than the first preset threshold, determine the SOC follow target value based on the actual SOC value and the displayed SOC value at the target time.

In this embodiment, the target time may be the initial time of battery operation, or other preset time, such as specific time such as 1 hour or 2 hours of battery operation, which is not specifically limited. The first preset threshold can be 0, that is, a specific implementation of the above S101 can be: when the actual SOC value of the battery at the initial moment of battery operation is inconsistent with the displayed SOC value, then based on the actual SOC value at the time of battery operation and the displayed SOC value SOC value calculation SOC follows the target value.

If the actual SOC value corresponding to the target moment is consistent with the displayed SOC value, the subsequent steps are not performed, and the existing displayed SOC value following method is used to control the displayed SOC value to follow the actual SOC value.

Specifically, the SOC following target value is used to indicate that the displayed SOC value can be the same as the actual SOC value corresponding to the moment when it changes to the SOC following target value.

S102: According to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the rate of change of the actual SOC value at the current moment, calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first change Rate.

In this embodiment, before each calculation of the displayed SOC value at the current moment, the electronic device needs to determine the change rate of the displayed SOC value at the current moment according to the actual SOC value at the current moment and the SOC tracking target value. In order to make the displayed SOC value the same as the actual SOC value corresponding to the moment when the SOC follows the target value, this embodiment can consider the proportional algorithm idea to calculate the change rate of the displayed SOC value at the current moment.

Specifically, first calculate the difference between the actual SOC value at the current moment and the SOC following target value, and the difference between the displayed SOC value at the previous moment and the SOC following target value, and then calculate the ratio of the first two differences, according to the The ratio and the rate of change of the actual SOC value at the current moment are used to calculate the rate of change of the displayed SOC value at the current moment.

S103: Update the displayed SOC value at the current moment according to the displayed SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the displayed SOC value is consistent with the actual SOC value corresponding to the moment when it reaches the SOC tracking target value .

In this embodiment, the displayed SOC value at the current moment is calculated using the formula SOCx _t = SOCx _t _-1 + Vx _t ∆ t , wherein, SOCx _t represents the displayed SOC value at time t , and SOCx _t- ₁ represents the time at t -1 The displayed SOC value of , Vx _t represents the change rate of the displayed SOC value at time t , and ∆ t represents the single cycle time.

It can be seen from the above-mentioned embodiments that in this embodiment, when the difference between the actual SOC value corresponding to the target time and the displayed SOC value of the battery is detected to be greater than the first preset threshold, the SOC follow-up is determined based on the actual SOC value and the displayed SOC value at the target time. Target value; then according to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the rate of change of the actual SOC value at the current moment, calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first A rate of change; finally update the displayed SOC value at the current moment according to the displayed SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the displayed SOC value corresponds to the actual SOC at that moment when it reaches the SOC follow-up target value The value remains the same. Through the above solution, the present application can dynamically calculate and display the SOC change rate in combination with the actual SOC value and its change rate, and follow the target value, so as to avoid the jumping problem of the displayed SOC value and improve the follow-up effect of the displayed SOC value.

In a possible implementation manner, the specific implementation process of S101 includes:

If the battery is in the charging state, the larger value of the actual SOC value corresponding to the target time and the displayed SOC value is used as the charging follow target value;

The first preset offset value is added to the charging following target value to obtain the SOC following target value.

In this embodiment, if the battery is in a charged state, the formula SOC _AIM =max( SOC _z ₀ , SOC _x ₀ )+ SOC _add ₁ is used to calculate the SOC follow-up target value, wherein SOC _AIM represents the SOC follow-up target value, and SOC _z ₀ represents the actual SOC value at the target time, SOC _x ₀ represents the displayed SOC value at the target time, and SOC _add ₁ represents the first preset offset value.

Specifically, the first preset offset value can be customized according to the actual situation. For example, if it is necessary to display the SOC value to quickly keep up with the actual SOC value, then set a smaller first preset offset value. If it is necessary to display the SOC If the value follows the actual SOC value more gradually, a larger first preset offset value is set.

If the battery is in a discharge state, the smaller value of the actual SOC value corresponding to the target time and the displayed SOC value is used as the discharge follow target value;

In this embodiment, if the battery is in a discharge state, the formula SOC _AIM =min( SOC _z ₀ , SOC _x ₀ ) -SOC _add ₂ is used to calculate the SOC following target value, wherein SOC _add ₂ represents the second preset offset value.

Specifically, the second preset offset value can be customized according to the actual situation. For example, if it is necessary to display the SOC value to quickly catch up with the actual SOC value, set a smaller second preset offset value, and if it is necessary to display the SOC If the value follows the actual SOC value more gently, then a larger second preset offset value is set. The first preset offset value and the second preset offset value may be the same or different.

In a possible implementation manner, the specific implementation process of S102 includes:

S201: subtracting the actual SOC value at the current moment from the SOC following target value to obtain a first difference;

S202: Subtracting the SOC tracking target value from the displayed SOC value at the previous moment to obtain a second difference;

S203: Divide the first difference by the second difference to obtain the following gain at the current moment;

S204: According to the following gain at the current moment and the rate of change of the actual SOC value at the current moment, calculate a first rate of change corresponding to the current moment.

In this embodiment, as a modification of the above S203 to S204, this embodiment may also divide the second difference by the first difference to obtain the following gain at the current moment, and then divide the change rate of the actual SOC value at the current moment by With the following gain, the first rate of change corresponding to the current moment is obtained.

As another implementation process of the above S102, the process may also include:

1. Create neural network models based on neural network algorithms;

2. After using the method S101-S103 of this embodiment to control and display the SOC value for a period of time, obtain the actual SOC value of the battery at each sampling time in the historical period, the displayed SOC value, the SOC following the target value, and the actual SOC corresponding to each sampling time The rate of change of the value and the rate of change of the displayed SOC value, and then take the SOC following the target value, the actual SOC value corresponding to the SOC following the target value at time t -1, and the rate of change of the actual SOC value at time t as a training sample, Create a training sample set with the rate of change of the displayed SOC value at time t as the sample label, and use the training sample set to train the above neural network model until the calculation accuracy of the neural network model meets the requirements.

3. Input the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value and the rate of change of the actual SOC value at the current moment into the trained neural network model to obtain the rate of change of the displayed SOC value at the current moment .

In a possible implementation manner, before S102, the method provided in this embodiment further includes:

formula based

In a possible implementation manner, the specific implementation process of S204 includes:

If the battery is in a charging state, calculate the first rate of change corresponding to the current moment according to the formula Vx _t = K _t * Vz _t ;

If the battery is in a discharge state, calculate the first rate of change corresponding to the current moment according to the formula Vx _t =- K _t * Vz _t ;

In this embodiment, when the battery is in the charging state, the rate of change of the SOC value is positive, and when the battery is in the state of discharging, the rate of change of the SOC value is negative, so the above two formulas are used to calculate the first rate of change corresponding to the current moment .

In one embodiment of the present application, when it is detected that the actual SOC value at a certain moment is the same as the displayed SOC value, the battery display SOC value follow-up procedure is exited, and the display SOC value is updated using the original follow-up method.

Through the above solution, this embodiment can use the proportional algorithm to dynamically adjust the change speed of the displayed SOC value during the charging and discharging process of the battery, avoiding the following disadvantages such as jumping of the following speed and poor follow-up effect caused by periodic constant-rate follow-up, thereby On the premise of ensuring the user experience, the consistency between the actual SOC value and the displayed SOC value is guaranteed.

It should be understood that the sequence numbers of the steps in the above embodiments do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

The following are device embodiments of the present application, and for details that are not exhaustively described therein, reference may be made to the above-mentioned corresponding method embodiments.

Fig. 2 shows a schematic structural diagram of a battery display SOC value follower 100 provided by the embodiment of the present application. For the convenience of description, only the parts related to the embodiment of the present application are shown, and the details are as follows:

As shown in FIG. 2 , the following device 100 for displaying the SOC value of the battery includes:

Follow the target value calculation module 110, configured to determine the SOC based on the actual SOC value and the displayed SOC value at the target time if it is detected that the difference between the actual SOC value corresponding to the target time and the displayed SOC value of the battery is greater than the first preset threshold follow the target value;

The first rate-of-change calculation module 120 is configured to calculate the displayed SOC value corresponding to the current moment according to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the rate of change of the actual SOC value at the current moment The rate of change, and as the first rate of change;

The display SOC value update module 130 is configured to update the display SOC value at the current moment according to the display SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the display SOC value is consistent with the SOC tracking target value when it reaches the SOC target value. The actual SOC value corresponding to each moment remains consistent.

In a possible implementation manner, the following target value calculation module 110 is specifically configured as:

In a possible implementation, the first rate-of-change calculation module 120 includes:

The first difference calculation unit is configured to subtract the actual SOC value at the current moment from the SOC following the target value to obtain the first difference;

The second difference calculation unit is configured to subtract the displayed SOC value at the previous moment from the SOC following the target value to obtain the second difference;

In a possible implementation manner, the battery display SOC value follower 100 provided in the present application further includes an actual SOC rate of change acquisition module, and the actual SOC rate of change acquisition module is configured as:

formula based

In addition, in other embodiments, the first rate-of-change calculation module 120 can also be configured as:

1. Create neural network models based on neural network algorithms;

It should be noted that for the technical means and technical effects not described in detail in the device embodiments of the present application, you can refer to the corresponding technical means and technical effects in the method embodiments of the present application. It should be considered that after this description, the device embodiments of the present application have already The content that is not specified in detail is clearly described.

It can be seen from the above-mentioned embodiments that in this embodiment, when the difference between the actual SOC value corresponding to the target time and the displayed SOC value of the battery is detected to be greater than the first preset threshold, the SOC follow-up is determined based on the actual SOC value and the displayed SOC value at the target time. Target value; then according to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the rate of change of the actual SOC value at the current moment, calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first A rate of change; finally update the displayed SOC value at the current moment according to the displayed SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the displayed SOC value corresponds to the actual SOC at that moment when it reaches the SOC follow-up target value The value remains the same. Through the above solution, the present application can dynamically calculate and display the SOC change rate in combination with the actual SOC value and change rate and follow target value, thereby not only avoiding the jump problem of the displayed SOC value, but also improving the follow-up effect of the displayed SOC value.

The embodiment of the present application also provides a computer program product, which has a program code, and when the program code is run in a corresponding processor, controller, computing device or electronic device, any one of the above methods for following the battery display SOC value is implemented. The steps in the example are, for example, step 101 to step 103 shown in FIG. 1 . Those skilled in the art should understand that the methods proposed in the embodiments of the present application and associated devices may be implemented in various forms of hardware, software, firmware, dedicated processors or combinations thereof. Special purpose processors may include Application Specific Integrated Circuits (ASICs), Reduced Instruction Set Computers (RISCs), and/or Field Programmable Gate Arrays (FPGAs). The proposed methods and devices are preferably implemented as a combination of hardware and software. The software is preferably installed as an application program on the program storage device. It is typically a computer platform based machine having hardware, such as one or more central processing units (CPUs), random access memory (RAM), and one or more input/output (I/O) interfaces. An operating system is also typically installed on the computer platform. Various procedures and functions described herein may be part of the application program, or a part thereof may be executed by the operating system.

In one embodiment, this embodiment provides an automobile, including an electronic device for implementing the above-mentioned method for following a battery display SOC value.

Fig. 3 is a schematic diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 3 , the electronic device 3 of this embodiment includes: a processor 30 , a memory 31 , and a computer program 32 stored in the memory 31 and operable on the processor 30 . When the processor 30 executes the computer program 32 , the steps in the above embodiments of the method for following the battery display SOC value are implemented, such as steps 101 to 103 shown in FIG. 1 . Alternatively, when the processor 30 executes the computer program 32, the functions of the modules/units in the above-mentioned device embodiments are implemented, for example, the functions of the modules/units 110 to 130 shown in FIG. 2 .

Exemplarily, the computer program 32 can be divided into one or more modules/units, and one or more modules/units are stored in the memory 31 and executed by the processor 30 to complete/implement the solutions provided in this application . One or more modules/units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution process of the computer program 32 in the electronic device 3 . For example, computer program 32 may be divided into modules 110 to 130 shown in FIG. 2 .

The electronic device 3 may include, but not limited to, a processor 30 and a memory 31 . Those skilled in the art can understand that FIG. 3 is only an example of the electronic device 3, and does not constitute a limitation to the electronic device 3. It may include more or less components than shown in the figure, or combine some components, or different components. , for example, the electronic device may also include input and output devices, network access devices, buses, and so on.

Processor 30 may be a central processing unit (Central Processing Unit, CPU), and other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

The storage 31 may be an internal storage unit of the electronic device 3 , such as a hard disk or memory of the electronic device 3 . The memory 31 can also be an external storage device of the electronic device 3, such as a plug-in hard disk equipped on the electronic device 3, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash memory card (Flash Card) and so on. Further, the memory 31 may also include both an internal storage unit of the electronic device 3 and an external storage device. The memory 31 is used to store computer programs and other programs and data required by the electronic device. The memory 31 can also be used to temporarily store data that has been output or will be output.

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units, Completion of modules means that the internal structure of the device is 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 may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above system, reference may be made to the corresponding processes in the aforementioned method embodiments, and details will not be repeated here.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, refer to the relevant descriptions of other embodiments.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In the embodiments provided in this application, it should be understood that the disclosed device/electronic equipment and method can be implemented in other ways. For example, the device/electronic device embodiments described above are only illustrative, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components May be combined or may be integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If an integrated module/unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application realizes all or part of the processes in the methods of the above embodiments, and can also be completed by instructing related hardware through computer programs. The computer programs can be stored in a non-volatile computer-readable storage medium. When the computer program is executed by the processor, it can realize the steps of the above embodiments of the following method for displaying the SOC value of each battery. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory (Read-Only Memory, ROM), random memory Access memory (Random Access Memory, RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in computer-readable storage media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, computer-readable storage media Excluding electrical carrier signals and telecommunication signals.

Furthermore, the embodiments shown in the drawings of the present application or the features of the various embodiments mentioned in this specification are not necessarily to be understood as independent embodiments from each other. Rather, each feature described in one example of an embodiment can be combined with one or more other desired features from other embodiments to produce other embodiments that are not described in words or with reference to the figures.

The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still apply to the foregoing embodiments Modifications to the technical solutions recorded, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the application, and should be included in this application. within the scope of protection.

Claims

A method for following a battery displaying an SOC value, characterized in that it comprises:

If it is monitored that the difference between the actual SOC value corresponding to the target moment and the displayed SOC value of the battery is greater than the first preset threshold, then determine the SOC follow-up target value based on the actual SOC value and the displayed SOC value at the target moment;

According to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the rate of change of the actual SOC value at the current moment, calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first change Rate;

Update the displayed SOC value at the current moment according to the displayed SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the displayed SOC value corresponds to the moment when it reaches the SOC follow-up target value The actual SOC value remains the same.
The method for following the displayed SOC value of the battery according to claim 1, wherein said determining the SOC following target value based on the actual SOC value and the displayed SOC value at the target moment comprises:

If the battery is in a charging state, the larger value of the actual SOC value corresponding to the target moment and the displayed SOC value is used as the charging follow target value;

Adding the charging following target value to a first preset offset value to obtain the SOC following target value.
The method for following the displayed SOC value of the battery according to claim 1 or 2, wherein the determining the SOC following target value based on the actual SOC value and the displayed SOC value at the target moment comprises:

If the battery is in a discharge state, the smaller value of the actual SOC value corresponding to the target moment and the displayed SOC value is used as the discharge follow target value;

The second preset offset value is subtracted from the discharge follow target value to obtain the SOC follow target value.
The method for following the displayed SOC value of the battery according to claim 1, wherein the method is based on the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the actual SOC value at the current moment Calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first rate of change, including:

subtracting the actual SOC value at the current moment from the SOC following target value to obtain a first difference;

Subtracting the SOC following target value from the displayed SOC value at the previous moment to obtain a second difference;

dividing the first difference by the second difference to obtain the following gain at the current moment;

A first rate of change corresponding to the current moment is calculated according to the following gain at the current moment and the rate of change of the actual SOC value at the current moment.
The method for following the displayed SOC value of the battery according to claim 4, characterized in that, according to the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value and the actual SOC at the current moment The rate of change of the value, before calculating the rate of change of the displayed SOC value corresponding to the current moment, the method also includes:

formula based
, to obtain the rate of change of the actual SOC value of the battery at the current moment;

Among them, Vz t represents the change rate of the actual SOC value corresponding to time t , ∆ t represents the single-cycle time, C t represents the battery capacity corresponding to time t , and I t represents the battery current corresponding to time t .
The method for following the battery display SOC value according to claim 5, characterized in that the first change corresponding to the current moment is calculated according to the following gain at the current moment and the rate of change of the actual SOC value at the current moment rates, including:

If the battery is in a charged state, calculate the first rate of change corresponding to the current moment according to the formula Vx t = K t * Vz t ;

If the battery is in a discharge state, calculate the first rate of change corresponding to the current moment according to the formula Vx t =-K t * Vz t ;

Wherein, Vx t represents the first rate of change corresponding to time t , K t represents the following gain corresponding to time t , and Vz t represents the rate of change of the actual SOC value corresponding to time t .
The method for following the displayed SOC value of the battery according to claim 1, wherein the method is based on the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value, and the actual SOC value at the current moment Calculate the rate of change of the displayed SOC value corresponding to the current moment, and use it as the first rate of change, including:

Create neural network models based on neural network algorithms;

Obtain the actual SOC value, displayed SOC value, SOC follow-up target value, the change rate of the actual SOC value corresponding to each sampling time point and the change rate of the displayed SOC value of the battery at each sampling time in the historical period, and use the SOC follow-up The target value, the actual SOC value corresponding to the SOC following the target value at time t -1, and the rate of change of the actual SOC value at time t are used as a training sample, and the rate of change of the displayed SOC value at time t is used as a sample label to create training A sample set, and using the training sample set to train the neural network model until the calculation accuracy of the neural network model meets the requirements;

Input the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value and the rate of change of the actual SOC value at the current moment into the trained neural network model to obtain the Describe the change rate of the displayed SOC value at the current moment.
A battery display SOC value follower, characterized in that it comprises:

The following target value calculation module is configured to determine the battery based on the actual SOC value at the target time and the displayed SOC value if the difference between the actual SOC value corresponding to the target time and the displayed SOC value is greater than the first preset threshold. SOC follows the target value;

The first change rate calculation module is configured to calculate the display SOC corresponding to the current moment according to the actual SOC value at the current moment, the display SOC value at the previous moment, the SOC follow-up target value, and the change rate of the actual SOC value at the current moment The rate of change of the value, and as the first rate of change;

The display SOC value updating module is configured to update the display SOC value at the current moment according to the display SOC value of the battery at the previous moment and the first rate of change at the current moment, so that the display SOC value reaches the When the SOC follows the target value, it is consistent with the actual SOC value corresponding to this moment.
The battery display SOC value following device according to claim 8, characterized in that, the following target value calculation module is specifically configured as:

If the battery is in a charging state, the larger value of the actual SOC value corresponding to the target moment and the displayed SOC value is used as the charging follow target value;

Adding the charging following target value to a first preset offset value to obtain the SOC following target value.
The following device for displaying the SOC value of the battery according to claim 8 or 9, wherein the following target value calculation module is specifically configured as:

If the battery is in a discharge state, the smaller value of the actual SOC value corresponding to the target moment and the displayed SOC value is used as the discharge follow target value;

The second preset offset value is subtracted from the discharge follow target value to obtain the SOC follow target value.
The device for following the battery display SOC value according to claim 8, wherein the first rate of change calculation module includes:

The first difference calculation unit is configured to subtract the actual SOC value at the current moment from the SOC following target value to obtain a first difference;

The second difference calculation unit is configured to subtract the displayed SOC value at the previous moment from the SOC following target value to obtain a second difference;

a following gain calculation unit configured to divide the first difference by the second difference to obtain the following gain at the current moment;

The first rate-of-change calculation unit is configured to calculate a first rate-of-change corresponding to the current moment according to the following gain at the current moment and the rate of change of the actual SOC value at the current moment.
The battery display SOC value following device according to claim 11, characterized in that it also includes an actual SOC rate of change acquisition module, the actual SOC rate of change acquisition module is configured to:

formula based
, to obtain the rate of change of the actual SOC value of the battery at the current moment;

Among them, Vz t represents the change rate of the actual SOC value corresponding to time t , ∆ t represents the single-cycle time, C t represents the battery capacity corresponding to time t , and I t represents the battery current corresponding to time t .
The battery display SOC value following device according to claim 12, characterized in that, the first rate-of-change calculation unit is specifically configured as:

If the battery is in a charged state, calculate the first rate of change corresponding to the current moment according to the formula Vx t = K t * Vz t ;

If the battery is in a discharge state, calculate the first rate of change corresponding to the current moment according to the formula Vx t =-K t * Vz t ;

Wherein, Vx t represents the first rate of change corresponding to time t , K t represents the following gain corresponding to time t , and Vz t represents the rate of change of the actual SOC value corresponding to time t .
The battery display SOC value following device according to claim 8, characterized in that, the first change rate calculation module is specifically configured as:

Create neural network models based on neural network algorithms;

Obtain the actual SOC value, displayed SOC value, SOC follow-up target value, the change rate of the actual SOC value corresponding to each sampling time point and the change rate of the displayed SOC value of the battery at each sampling time in the historical period, and use the SOC follow-up The target value, the actual SOC value corresponding to the SOC following the target value at time t -1, and the rate of change of the actual SOC value at time t are used as a training sample, and the rate of change of the displayed SOC value at time t is used as a sample label to create training A sample set, and using the training sample set to train the neural network model until the calculation accuracy of the neural network model meets the requirements;

Input the actual SOC value at the current moment, the displayed SOC value at the previous moment, the SOC following target value and the rate of change of the actual SOC value at the current moment into the trained neural network model to obtain the Describe the change rate of the displayed SOC value at the current moment.
An electronic device, comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, characterized in that the above claim 1 is realized when the processor executes the computer program Steps in the following method for the battery displaying the SOC value according to any one of 7 to 7.
A computer-readable storage medium, the computer-readable storage medium stores a computer program, characterized in that, when the computer program is executed by a processor, the battery display SOC as described in any one of claims 1 to 7 above is realized The value's follow method steps.
An automobile, characterized by comprising the electronic device as claimed in claim 15.