CN117162865A

CN117162865A - Consistency difference early warning method, device, equipment and storage medium

Info

Publication number: CN117162865A
Application number: CN202311258982.XA
Authority: CN
Inventors: 闫鹤; 张慧; 张伟; 陈子杰; 胡程程
Original assignee: Chery New Energy Automobile Co Ltd
Current assignee: Chery New Energy Automobile Co Ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2023-12-05

Abstract

The application discloses a method, a device, equipment and a storage medium for early warning of consistency difference, and belongs to the technical field of vehicle control. The method comprises the following steps: determining that any one of the battery cells is in a non-platform area based on the OCV of the battery cell being smaller than a first voltage threshold, and determining that the battery cell is in a rest state based on the current being smaller than the first current threshold and the rest time being longer than a time length threshold; determining the difference value of the SOC based on the SOC of the battery cell corresponding to the first voltage and the SOC of the battery cell corresponding to the second voltage, wherein the first voltage and the second voltage are maximum voltage and minimum voltage in the obtained OCV of the battery cell when the reference number of battery cells are in a static state and in a non-platform region; and determining whether the consistency difference of the battery cells needs to be pre-warned based on the difference of the SOC. Through detecting the SOC difference of the electric vehicle, and carrying out early warning based on the detection result, the cruising and the safety of the vehicle are ensured.

Description

Consistency difference early warning method, device, equipment and storage medium

Technical Field

The embodiment of the application relates to the technical field of vehicle control, in particular to a method, a device, equipment and a storage medium for early warning of consistency difference.

Background

The power battery of the electric vehicle is composed of single batteries, and due to the difference of the production process or the use environment of the single batteries, the single batteries can generate the difference of self-discharge rate, namely, the different single batteries have different holding capacities of the electric quantity stored in the batteries in an open circuit state, so that the different single batteries have certain difference in charge, namely, consistency difference. Because the consistency difference affects the endurance and the safety of the vehicle, it is necessary to detect the consistency difference of the electric vehicle and early warn based on the detection result to ensure the endurance and the safety of the vehicle.

Disclosure of Invention

The embodiment of the application provides a method, a device, equipment and a storage medium for early warning of consistency difference, which can be used for detecting the consistency difference of an electric vehicle and early warning based on a detection result. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides a method for early warning of consistency differences, where the method includes:

acquiring a State of Charge (SOC) of a reference number of battery cells, an open circuit voltage (Open circuit voltage), a current and a standing time period according to a first reference frequency, wherein the battery cells are positioned on a vehicle and belong to the same power battery;

Determining that any one of the reference number of battery cells is in a non-platform area based on the OCV of the battery cell being less than a first voltage threshold, and determining that the battery cell is in a rest state based on the current being less than a first current threshold and the rest time being greater than a duration threshold;

determining a difference value of the SOC based on the SOC of the battery cell corresponding to a first voltage and the SOC of the battery cell corresponding to a second voltage when the battery cell is in a static state and a non-platform region, wherein the first voltage is the maximum voltage in the obtained OCV of the battery cell when the reference number of battery cells are in the static state and the non-platform region, and the second voltage is the minimum voltage in the obtained OCV of the battery cell when the reference number of battery cells are in the static state and the non-platform region;

and acquiring an early warning result based on the difference value of the SOC, wherein the early warning result is used for indicating whether the consistency difference of the battery cells is required to be early warned.

In another aspect, an early warning device for consistency differences is provided, the device comprising:

the first acquisition module is used for acquiring the state of charge (SOC), the Open Circuit Voltage (OCV), the current and the standing time length of the reference number of battery cells according to a first reference frequency, wherein the battery cells are positioned on the vehicle and belong to the same power battery;

The first determining module is used for determining that any one of the battery monomers in the reference number is in a non-platform area based on the fact that the OCV of the battery monomer is smaller than a first voltage threshold value, and determining that the battery monomer is in a static state based on the fact that the current is smaller than a first current threshold value and the static time length is longer than a time length threshold value;

the second determining module is used for determining a difference value of the SOC based on the SOC of the battery cell corresponding to the first voltage and the SOC of the battery cell corresponding to the second voltage when the battery cell is in the static state and the non-platform region, wherein the first voltage is the maximum voltage in the acquired OCV of the battery cell when the reference number of battery cells are in the static state and the non-platform region, and the second voltage is the minimum voltage in the acquired OCV of the battery cell when the reference number of battery cells are in the static state and the non-platform region;

the second acquisition module is used for acquiring an early warning result based on the difference value of the SOC, and the early warning result is used for indicating whether the consistency difference of the battery monomers is required to be early warned.

In another aspect, a computer device is provided, where the computer device includes a processor and a memory, where at least one computer program is stored in the memory, where the at least one computer program is loaded and executed by the processor, so that the computer device implements any of the foregoing methods for early warning of consistency differences.

In another aspect, there is further provided a computer readable storage medium having at least one computer program stored therein, where the at least one computer program is loaded and executed by a processor, so that a computer implements any one of the foregoing methods for providing a difference in consistency.

In another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions so that the computer device performs any of the above-described methods of pre-warning of consistency differences.

The technical scheme provided by the embodiment of the application at least has the following beneficial effects:

according to the application, through the fact that the OCV of the battery monomer is smaller than the first voltage threshold, the current is smaller than the first current threshold and the standing time length is longer than the time length threshold, the battery monomer is determined to be in a standing state and a non-platform area, and through the fact that the reference number of the battery monomers are all in the standing state and the non-platform area, the difference value of the SOC is determined through the SOC of the battery monomer corresponding to the maximum voltage in the OCV of the battery monomer and the SOC of the battery monomer corresponding to the minimum voltage in the OCV of the battery monomer, and the detection of the SOC difference of the electric vehicle is realized.

After the difference value of the SOC is determined, an early warning result is obtained through the difference value of the SOC, and the early warning result is used for indicating whether the consistency difference of the battery cells needs to be early warned. Through the early warning based on the detection result, the endurance and the safety of the vehicle are ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of an implementation environment provided by an embodiment of the present application;

FIG. 2 is a flowchart of a method for providing a warning of consistency differences according to an embodiment of the present application;

FIG. 3 is a graph of SOC-OCV according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a system according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an early warning device for consistency difference according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a server according to an embodiment of the present application;

Fig. 7 is a schematic structural diagram of an early warning device for consistency difference according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

The embodiment of the application provides a method for early warning of consistency difference, please refer to fig. 1, which shows a schematic diagram of an implementation environment of the method provided by the embodiment of the application. The implementation environment may include: a vehicle 11 and a battery management system 12, the battery management system 12 being located on the vehicle 11.

Wherein the vehicle 11 is mounted with a power battery including a reference number of battery cells. The battery management system 12 obtains one of the SOC, OCV, current, or rest period of the reference number of battery cells at the first reference frequency.

Based on the OCV of any one of the reference number of cells being less than the first voltage threshold, it is determined that the cell is in the non-plateau region, and based on the current being less than the first current threshold and the resting time being greater than the time duration threshold, the battery management system 12 determines that the cell is in a resting state.

In the case where the battery cells are in the stationary state and the non-platform region, the battery management system 12 determines a difference in SOC based on the SOC of the battery cell corresponding to the first voltage and the SOC of the battery cell corresponding to the second voltage, which are maximum and minimum voltages in the OCV of the battery cells acquired by the battery management system 12, for the reference number of battery cells each in the stationary state and the non-platform region.

The battery management system 12 obtains an early warning result based on the difference in SOC, the early warning result being used to indicate whether or not an early warning of the uniformity difference of the battery cells is required.

The battery management system 12 may store the SOC of the battery cell, record the trend of the SOC of the battery cell over time, and the vehicle 11 may obtain the SOC of the battery cell from the battery management system 12. Of course, the SOC of the battery cell may be stored in the terminal 11.

Alternatively, the vehicle 11 establishes a communication connection with the battery management system 12 through a wired or wireless network.

Those skilled in the art will appreciate that the above-described vehicle 11 and battery management system 12 are by way of example only, and that other terminals or servers, either now present or later, may be adapted for use with the present application, and are intended to be within the scope of the present application and are incorporated herein by reference.

Based on the implementation environment shown in fig. 1, an embodiment of the present application provides a method for early warning of consistency differences, as shown in fig. 2, and the method is applied to a battery management system, for example, and the method includes steps 201 to 204.

In step 201, the SOC, OCV, current, and rest duration of a reference number of battery cells located on the vehicle and belonging to the same power battery are obtained according to a first reference frequency.

The embodiment of the application does not limit the first reference frequency, can be set based on experience, and can also adjust the first reference frequency according to actual conditions. The embodiment of the application also does not limit the reference quantity, and is determined according to the actual condition of the power battery. In one possible implementation, the reference number may be determined based on the model number of the power cell. The device for acquiring the current of the battery cell comprises, but is not limited to, a universal meter, and the battery management system controls the universal meter to acquire the current of the battery cell according to a first reference frequency, wherein the universal meter is in a current gear.

In one possible implementation, the SOC of the battery cell may be determined by performing calculation processing on the current and the discharge duration of the battery cell, for example, the SOC of the battery cell may be obtained by an ampere-hour integration method. Taking the initial SOC of the battery cell as 100% as an example, in the discharging process, the battery management system integrates the current obtained by the universal meter and the discharging time length and divides the integrated current by the initial SOC to obtain the SOC of the battery cell at the moment.

The device for obtaining the OCV of the battery cell includes, but is not limited to, a direct current voltmeter, wherein the direct current voltmeter is used for detecting the OCV of the battery cell, and the battery management system controls the direct current voltmeter to detect the voltage between the anode and the cathode of the battery cell, and then the voltage between the anode and the cathode of the battery cell is subtracted to obtain the OCV of the battery cell.

The method for obtaining the standing time of the battery monomer is not limited, and in one possible implementation manner, the time when the current is smaller than the second current threshold value is taken as the standing time. For example, the duration of the state in which the current is less than the second current threshold may be acquired by an RTC (Real-time clock) and the battery management system controls the RTC to acquire the actual time and the current actual time at the start of the state in which the current is less than the second current threshold, and takes the interval between the actual time and the current actual time at the start as the rest duration. The embodiment of the application does not limit the second current threshold, and optionally, the second current threshold can be set to 0.1 ampere, and the second current threshold can be adjusted according to actual conditions.

In step 202, based on the OCV of any one of the reference number of battery cells being less than the first voltage threshold, it is determined that the battery cell is in the non-plateau region, and based on the current being less than the first current threshold and the resting time being greater than the time duration threshold, it is determined that the battery cell is in the resting state.

According to the embodiment of the application, the first voltage threshold is determined based on the OCVs of the battery cells, and the difference value between the OCV of any one of the battery cells in the reference number and the OCV acquired in the adjacent time is obtained by way of example; and determining the OCV corresponding to the difference value of the first voltage threshold value which is larger than the second voltage threshold value as the first voltage threshold value, wherein the first voltage threshold value is larger than the second voltage threshold value.

Wherein, the adjacent time is the time of last obtaining the OCV of the battery cell before the OCV of the battery cell is obtained this time, and exemplary, the difference value between the OCV of any one of the battery cells in the reference number and the OCV obtained at the adjacent time is obtained, including: the OCV of the cell acquired this time is subtracted from the OCV of the cell acquired last time before.

Illustratively, the OCV of the battery cell is differed from the OCV acquired at the adjacent time, the resulting difference is compared with the second voltage threshold, and the OCV corresponding to the first difference greater than the second voltage threshold is taken as the first voltage threshold.

In one possible implementation, the battery management system may further draw a functional relationship diagram of SOC-OCV, where a point where a difference between OCV of a battery cell and OCV acquired at an adjacent time is greater than the second voltage threshold may be determined according to a change of the functional image, and the functional relationship diagram of SOC-OCV is shown in fig. 3.

The embodiment of the application does not limit the second voltage threshold, the first current threshold and the time length threshold, and can set the second voltage threshold to 0.1V, the first current threshold to 0.1A and the time length threshold to 2 hours based on experience, and can also adjust the second voltage threshold, the first current threshold and the time length threshold according to actual conditions.

In one possible implementation, the battery management system compares the OCV of the battery cell with a first voltage threshold, determines that the battery cell is in a non-plateau region based on the OCV of the battery cell being less than the first voltage threshold, compares the current of the battery cell with a first current threshold, and compares the resting period of the battery cell with a period threshold, and determines that the battery cell is in a resting state based on the current of the battery cell being less than the first current threshold and the resting period being greater than the period threshold. The platform region is a period in which the change of OCV is small in the discharging process of the battery cell, and the non-platform region is a period except the platform region in the discharging process of the battery cell. Illustratively, the criterion for determining whether the OCV variation is small includes, but is not limited to, that the OCV variation is small when the difference between the OCV of the obtained battery cell and the OCV obtained at the adjacent time is smaller than the first voltage threshold.

Illustratively, the battery management system determines whether remaining battery cells of the reference number of battery cells are in a stationary state and a non-plateau region in the same manner.

In step 203, in the case where the battery cells are in the stationary state and the non-platform region, the difference in SOC is determined based on the SOC of the battery cell corresponding to the first voltage, which is the maximum voltage in the OCV of the obtained battery cell when the reference number of battery cells are in the stationary state and the non-platform region, and the SOC of the battery cell corresponding to the second voltage, which is the minimum voltage in the OCV of the obtained battery cell when the reference number of battery cells are in the stationary state and the non-platform region.

In one possible implementation manner, taking a power battery as a lithium iron phosphate battery as an example, because the OCV of each battery cell of the lithium iron phosphate battery is not obviously changed in the platform area, and the OCV of the battery cell in the standing state can accurately represent the state of the SOC, the state of the SOC of the battery cell can be determined based on the voltages when the reference number of battery cells are in the non-platform area and the standing state.

In one possible implementation, it is determined that the reference number of battery cells are in a stationary state and in a non-platform region, and the OCV of each battery cell detected at this time is set to a maximum voltage as a first voltage and a minimum voltage as a second voltage.

Illustratively, after determining the first voltage and the second voltage, determining the difference in SOC based on the SOC of the battery cell corresponding to the first voltage and the SOC of the battery cell corresponding to the second voltage includes: and subtracting the SOC of the battery cell corresponding to the second voltage from the SOC of the battery cell corresponding to the first voltage to obtain a difference value of the SOCs.

In step 204, an early warning result is obtained based on the SOC difference, where the early warning result is used to indicate whether the uniformity difference of the battery cells needs to be early warned.

In one possible implementation manner, the early warning result is used for indicating whether the consistency difference of the battery monomers needs to be early warned, and after determining the difference value of the SOC, the early warning result is obtained based on the difference value of the SOC, including: transmitting the difference in SOC to a remote communication terminal located on the vehicle; the remote communication terminal is controlled to send the difference value of the SOC to a vehicle remote service provider, and the vehicle remote service provider is used for processing the difference value of the SOC to obtain an early warning result of the consistency difference; and the control vehicle remote service provider sends the early warning result to the remote communication terminal.

The difference value based on the SOC is larger, namely when the consistency difference is larger, the endurance and the safety of the vehicle are affected, so that the vehicle remote service provider processes the difference value of the SOC, the difference value based on the SOC is larger than an early warning threshold value, and the early warning result indicates that the consistency difference of the battery monomers needs to be early warned.

The embodiment of the application does not limit the early warning threshold value, can be set based on experience, and can also adjust the early warning threshold value according to actual conditions.

The vehicle remote service provider obtains the difference value of the SOC, compares the difference value of the SOC with the early warning threshold value, indicates that early warning is needed based on the difference value of the SOC being greater than the early warning threshold value, and pushes the early warning result to a background processor for reminding the background processor that the consistency difference exists in the power battery of the vehicle, and the power battery needs to be replaced or maintained.

In one possible implementation, controlling a vehicle remote service provider to count a trend of variation of the difference in SOC over time; and uploading the change trend to a background by a remote service provider for controlling the vehicle, and processing the change trend by the background to obtain an accuracy detection result of the early warning result of the consistency difference.

For example, the statistics of the trend of the SOC difference value with time may be drawing a trend chart of the SOC difference value with time, and the remote service provider of the vehicle uploads the trend chart to the background for the background processor to process the trend chart, and determines whether the battery management system has a misjudgment in the process of detecting the consistency difference based on the trend chart, and if the misjudgment exists, notifies the after-sales processor to repair the vehicle.

According to the embodiment of the application, the battery cell is determined to be in the static state and the non-platform area through the fact that the OCV of the battery cell is smaller than the first voltage threshold value, the current is smaller than the first current threshold value and the static time length is longer than the time length threshold value, and the difference value of the SOC is determined through the SOC of the battery cell corresponding to the maximum voltage in the OCV of the battery cell and the SOC of the battery cell corresponding to the minimum voltage in the OCV of the battery cell in the reference number of the battery cells in the static state and the non-platform area, so that the SOC difference of the electric vehicle is detected. After the difference value of the SOC is determined, an early warning result is obtained through the difference value of the SOC, and the early warning result is used for indicating whether the consistency difference of the battery cells needs to be early warned. Through the early warning based on the detection result, the endurance and the safety of the vehicle are ensured.

Fig. 4 provides a schematic diagram of a system principle, in which, at the vehicle end, BMS 401 transfers the SOC difference value to TBOX 402 in the form of a data embedded point, and TBOX 402 receives the SOC difference value and uploads it to the platform end. After receiving the SOC difference value uploaded by the TBOX 402, the TSP403 vehicle remote service provider at the platform end determines whether to need to pre-warn the consistency difference of the power battery. When the consistency difference of the power batteries is needed to be early-warned, the TSP403 pushes the early-warning result to the after-sales monitoring platform 404 for reminding the background processor of the after-sales monitoring platform that the consistency difference exists in the power batteries of the vehicles. The back office of the after-market monitor platform 404 then notifies the service end of the after-market personnel 405 to replace or maintain the power cells.

Referring to fig. 5, an embodiment of the present application provides a device for early warning of consistency differences, the device including:

a first obtaining module 501, configured to obtain, according to a first reference frequency, a state of charge SOC, an open circuit voltage OCV, a current, and a standing duration of a reference number of battery units, where the battery units are located on a vehicle and belong to a same power battery;

a first determining module 502, configured to determine that the battery cell is in the non-platform area based on the OCV of any one of the reference number of battery cells being less than the first voltage threshold, and determine that the battery cell is in the rest state based on the current being less than the first current threshold and the rest time being greater than the duration threshold;

A second determining module 503, configured to determine, when the battery cells are in the rest state and the non-platform region, a difference value of the SOC based on the SOC of the battery cell corresponding to the first voltage and the SOC of the battery cell corresponding to the second voltage, where the first voltage is a maximum voltage in the OCV of the obtained battery cells when the reference number of battery cells are in the rest state and the non-platform region, and the second voltage is a minimum voltage in the OCV of the obtained battery cells when the reference number of battery cells are in the rest state and the non-platform region;

the second obtaining module 504 is configured to obtain an early warning result based on the SOC difference, where the early warning result is used to indicate whether the difference in consistency of the battery cells needs to be early warned.

In one possible implementation, the apparatus further includes: a third obtaining module, configured to obtain a difference value between the OCV of any one of the reference number of battery cells and the OCV obtained at an adjacent time; and a third determining module, configured to determine that the first OCV difference greater than the second voltage threshold is the first voltage threshold, and the first voltage threshold is greater than the second voltage threshold.

In one possible implementation, the second obtaining module 504 is configured to send the SOC difference value to a remote communication terminal located on the vehicle; the remote communication terminal is controlled to send the difference value of the SOC to a vehicle remote service provider, and the vehicle remote service provider is used for processing the difference value of the SOC to obtain an early warning result of the consistency difference; and the control vehicle remote service provider sends the early warning result to the remote communication terminal.

In one possible implementation, the apparatus further includes: based on the difference value of the SOC being larger than the early warning threshold value, the early warning result indicates that the consistency difference of the battery cells needs to be early warned.

In one possible implementation, the apparatus further includes: the statistics module is used for controlling the vehicle remote service provider to count the change trend of the difference value of the SOC along with time; and the uploading module is used for controlling a remote service provider for the vehicle to upload the change trend to the background and processing the change trend by the background to obtain an accuracy detection result of the early warning result of the consistency difference.

According to the device, through the fact that the OCV of the battery monomer is smaller than the first voltage threshold value, the current is smaller than the first current threshold value and the standing time length is longer than the time length threshold value, the battery monomer is determined to be in a standing state and a non-platform area, the difference value of the SOC is determined through the SOC of the battery monomer corresponding to the maximum voltage in the OCV of the battery monomer and the SOC of the battery monomer corresponding to the minimum voltage in the OCV of the battery monomer, and the detection of the SOC difference of the electric vehicle is achieved. After the difference value of the SOC is determined, an early warning result is obtained through the difference value of the SOC, and the early warning result is used for indicating whether the consistency difference of the battery cells needs to be early warned. Through the early warning based on the detection result, the endurance and the safety of the vehicle are ensured.

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the foregoing functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to perform all or part of the functions described above. In addition, the apparatus and the method embodiments provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the apparatus and the method embodiments are detailed in the method embodiments and are not repeated herein.

Fig. 6 is a schematic structural diagram of a server according to an embodiment of the present application, where the server may have a relatively large difference due to different configurations or performances, and may include one or more processors 901 and one or more memories 902, where the one or more memories 902 store at least one computer program, and the at least one computer program is loaded and executed by the one or more processors 901, so that the server implements the method for early warning of consistency difference provided by the foregoing method embodiments. Of course, the server may also have a wired or wireless network interface, a keyboard, an input/output interface, and other components for implementing the functions of the device, which are not described herein.

Fig. 7 is a schematic structural diagram of an early warning device with consistency difference according to an embodiment of the present application. The device may be a terminal, for example: vehicle-mounted system, smart phone, tablet, player, notebook or desktop. Terminals may also be referred to by other names as user equipment, portable terminals, laptop terminals, desktop terminals, etc.

Generally, the terminal includes: a processor 1501 and a memory 1502.

The processor 1501 may include one or more processing cores, such as a 4-core processor, an 8-core processor, or the like. The processor 1501 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 1501 may also include a main processor, which is a processor for processing data in an awake state, also called a CPU (Central Processing Unit ), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 1501 may be integrated with a GPU (Graphics Processing Unit, image processor) for taking care of rendering and rendering of content to be displayed by the display screen. In some embodiments, the processor 1501 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.

Memory 1502 may include one or more computer-readable storage media, which may be non-transitory. Memory 1502 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 1502 is configured to store at least one instruction for execution by processor 1501 to cause the terminal to implement the method of providing a method embodiment of the present application for providing a method of providing a difference in consistency.

In some embodiments, the terminal may further optionally include: a peripheral interface 1503 and at least one peripheral device. The processor 1501, memory 1502 and peripheral interface 1503 may be connected by a bus or signal lines. The individual peripheral devices may be connected to the peripheral device interface 1503 via a bus, signal lines, or circuit board. Specifically, the peripheral device includes: at least one of radio frequency circuitry 1504, a display 1505, a camera assembly 1506, audio circuitry 1507, and a power supply 1508.

A peripheral interface 1503 may be used to connect I/O (Input/Output) related at least one peripheral device to the processor 1501 and the memory 1502. In some embodiments, processor 1501, memory 1502, and peripheral interface 1503 are integrated on the same chip or circuit board; in some other embodiments, either or both of the processor 1501, the memory 1502, and the peripheral interface 1503 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.

The Radio Frequency circuit 1504 is configured to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 1504 communicates with a communication network and other communication devices via electromagnetic signals. The radio frequency circuit 1504 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 1504 includes: antenna systems, RF transceivers, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, subscriber identity module cards, and so forth. The radio frequency circuit 1504 may communicate with other terminals via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: metropolitan area networks, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuit 1504 may also include NFC (Near Field Communication, short range wireless communication) related circuits, which the present application is not limited to.

Display 1505 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When display screen 1505 is a touch display screen, display screen 1505 also has the ability to collect touch signals at or above the surface of display screen 1505. The touch signal may be input to the processor 1501 as a control signal for processing. At this point, display 1505 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments, the display 1505 may be one, disposed on the front panel of the terminal; in other embodiments, the display 1505 may be at least two, respectively disposed on different surfaces of the terminal or in a folded design; in other embodiments, the display 1505 may be a flexible display disposed on a curved surface or a folded surface of the terminal. Even more, the display 1505 may be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The display screen 1505 may be made of LCD (Liquid Crystal Display ), OLED (Organic Light-Emitting Diode) or other materials.

The camera assembly 1506 is used to capture images or video. Optionally, the camera assembly 1506 includes a front camera and a rear camera. Typically, the front camera is disposed on the front panel of the terminal and the rear camera is disposed on the rear surface of the terminal. In some embodiments, the at least two rear cameras are any one of a main camera, a depth camera, a wide-angle camera and a tele camera, so as to realize that the main camera and the depth camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize a panoramic shooting and Virtual Reality (VR) shooting function or other fusion shooting functions. In some embodiments, the camera assembly 1506 may also include a flash. The flash lamp can be a single-color temperature flash lamp or a double-color temperature flash lamp. The dual-color temperature flash lamp refers to a combination of a warm light flash lamp and a cold light flash lamp, and can be used for light compensation under different color temperatures.

The audio circuitry 1507 may include a microphone and a speaker. The microphone is used for collecting sound waves of users and the environment, converting the sound waves into electric signals, inputting the electric signals to the processor 1501 for processing, or inputting the electric signals to the radio frequency circuit 1504 for voice communication. For the purpose of stereo acquisition or noise reduction, a plurality of microphones can be respectively arranged at different parts of the terminal. The microphone may also be an array microphone or an omni-directional pickup microphone. The speaker is used to convert electrical signals from the processor 1501 or the radio frequency circuit 1504 into sound waves. The speaker may be a conventional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only the electric signal can be converted into a sound wave audible to humans, but also the electric signal can be converted into a sound wave inaudible to humans for ranging and other purposes. In some embodiments, the audio circuit 1507 may also include a headphone jack.

The power supply 1508 is used to power the various components in the terminal. The power source 1508 may be alternating current, direct current, disposable battery, or rechargeable battery. When the power source 1508 includes a rechargeable battery, the rechargeable battery may support wired or wireless charging. The rechargeable battery may also be used to support fast charge technology.

In some embodiments, the terminal further includes one or more sensors 1509. The one or more sensors 1509 include, but are not limited to: an acceleration sensor 1510, a gyro sensor 1511, a pressure sensor 1512, an optical sensor 1513, and a proximity sensor 1514.

The acceleration sensor 1510 may detect the magnitudes of accelerations on three coordinate axes of a coordinate system established with a terminal. For example, the acceleration sensor 1510 may be used to detect components of gravitational acceleration in three coordinate axes. The processor 1501 may control the display screen 1505 to display the user interface in either a landscape view or a portrait view based on the gravitational acceleration signal collected by the acceleration sensor 1510. The acceleration sensor 1510 may also be used for acquisition of motion data of a game or user.

The gyro sensor 1511 may detect a body direction and a rotation angle of the terminal, and the gyro sensor 1511 may collect a 3D motion of the user to the terminal in cooperation with the acceleration sensor 1510. The processor 1501, based on the data collected by the gyro sensor 1511, may implement the following functions: motion sensing (e.g., changing UI according to a tilting operation by a user), image stabilization at shooting, game control, and inertial navigation.

The pressure sensor 1512 may be disposed on a side frame of the terminal and/or below the display 1505. When the pressure sensor 1512 is disposed on a side frame of the terminal, a grip signal of the terminal by the user may be detected, and the processor 1501 performs a left-right hand recognition or a quick operation according to the grip signal collected by the pressure sensor 1512. When the pressure sensor 1512 is disposed at the lower layer of the display screen 1505, the processor 1501 controls the operability control on the UI interface according to the pressure operation of the user on the display screen 1505. The operability controls include at least one of a button control, a scroll bar control, an icon control, and a menu control.

The optical sensor 1513 is used to collect the ambient light intensity. In one embodiment, processor 1501 may control the display brightness of display screen 1505 based on the intensity of ambient light collected by optical sensor 1513. Specifically, when the ambient light intensity is high, the display brightness of the display screen 1505 is turned up; when the ambient light intensity is low, the display luminance of the display screen 1505 is turned down. In another embodiment, the processor 1501 may also dynamically adjust the shooting parameters of the camera assembly 1506 based on the ambient light intensity collected by the optical sensor 1513.

A proximity sensor 1514, also referred to as a distance sensor, is typically provided on the front panel of the terminal. The proximity sensor 1514 is used to collect the distance between the user and the front face of the terminal. In one embodiment, when the proximity sensor 1514 detects a gradual decrease in the distance between the user and the front face of the terminal, the processor 1501 controls the display 1505 to switch from the on-screen state to the off-screen state; when the proximity sensor 1514 detects that the distance between the user and the front face of the terminal gradually increases, the processor 1501 controls the display screen 1505 to switch from the off-screen state to the on-screen state.

It will be appreciated by those skilled in the art that the structure shown in fig. 7 is not limiting of the terminal and may include more or fewer components than shown, or may combine certain components, or may employ a different arrangement of components.

In an exemplary embodiment, a computer device is also provided, the computer device comprising a processor and a memory, the memory having at least one computer program stored therein. The at least one computer program is loaded and executed by one or more processors to cause the computer apparatus to implement any of the methods of providing a difference in consistency described above.

In an exemplary embodiment, there is also provided a computer-readable storage medium having stored therein at least one computer program loaded and executed by a processor of a computer device to cause the computer to implement any one of the above-described methods of providing a difference in consistency.

In one possible implementation, the computer readable storage medium may be a Read-Only Memory (ROM), a random-access Memory (Random Access Memory, RAM), a compact disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.

In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium and executes the computer instructions to cause the computer device to perform any of the methods of providing a difference in consistency described above.

It should be noted that, the information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, presented data, etc.), and signals related to the present application are all authorized by the user or are fully authorized by the parties, and the collection, use, and processing of the related data is required to comply with the relevant laws and regulations and standards of the relevant countries and regions. For example, the SOC, OCV, and current of the battery cell involved in the present application are all obtained under the condition of sufficient authorization.

It should be understood that references herein to "a plurality" are to two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

It should be noted that the terms "first," "second," and the like in the description and in the claims, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.

The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the present application, any modifications, equivalent substitutions, improvements, etc. that fall within the principles of the present application should be included in the scope of the present application.

Claims

1. The utility model provides a consistency difference early warning method which is characterized in that the method comprises the following steps:

acquiring the state of charge (SOC), open Circuit Voltage (OCV), current and standing time length of a reference number of battery cells according to a first reference frequency, wherein the battery cells are positioned on a vehicle and belong to the same power battery;

2. The method according to claim 1, wherein the method further comprises:

acquiring the difference value between the OCV of any one of the reference number of battery cells and the OCV acquired in the adjacent time;

determining a first difference in OCV greater than a second voltage threshold as the first voltage threshold, the first voltage threshold being greater than the second voltage threshold.

3. The method of claim 1, wherein the obtaining the early warning result based on the SOC difference value comprises:

transmitting the difference in SOC to a remote communication terminal located on the vehicle;

the remote communication terminal is controlled to send the difference value of the SOC to a vehicle remote service provider, and the vehicle remote service provider is used for processing the difference value of the SOC to obtain an early warning result of the consistency difference;

and controlling the vehicle remote service provider to send the early warning result to the remote communication terminal.

4. A method according to claim 3, characterized in that the method further comprises:

And based on the difference value of the SOC being larger than the early warning threshold value, the early warning result indicates that the consistency difference of the battery cells needs to be early warned.

5. A method according to claim 3, characterized in that the method further comprises:

controlling the vehicle remote service provider to count the variation trend of the difference value of the SOC along with time;

and controlling a remote service provider of the vehicle to upload the variation trend to a background for processing the variation trend by the background to obtain an accuracy detection result of the early warning result of the consistency difference.

6. An early warning device for consistency differences, the device comprising:

7. The apparatus of claim 6, wherein the apparatus further comprises:

a third obtaining module, configured to obtain a difference value between an OCV of any one of the reference number of battery cells and the OCV obtained at an adjacent time; and a third determining module, configured to determine that a difference value of a first OCV greater than a second voltage threshold is the first voltage threshold, where the first voltage threshold is greater than the second voltage threshold.

8. The apparatus of claim 6, wherein the second acquisition module is configured to send the difference in SOC to a remote communication terminal located on the vehicle; the remote communication terminal is controlled to send the difference value of the SOC to a vehicle remote service provider, and the vehicle remote service provider is used for processing the difference value of the SOC to obtain an early warning result of the consistency difference; and controlling the vehicle remote service provider to send the early warning result to the remote communication terminal.

9. A computer device, characterized in that it comprises a processor and a memory, in which at least one computer program is stored, which is loaded and executed by the processor, so that the computer device implements the method for warning of consistency differences according to any one of claims 1 to 5.

10. A computer readable storage medium, wherein at least one computer program is stored in the computer readable storage medium, and the at least one computer program is loaded and executed by a processor, so that a computer implements the method for early warning of consistency differences according to any one of claims 1 to 5.