Charging and discharging control method between charging and discharging equipment and battery and related equipment

Abstract

The invention belongs to the field of new energy battery performance testing, and discloses a charging and discharging control method between charging and discharging equipment and a battery and related equipment.The method comprises the steps that firstly, sensor information of the battery is obtained in real time, and the sensor information of the battery is updated in real time; generating a charge-discharge control signal according to a judgment result that the sensor information of the battery meets a preset condition, and finally transmitting the charge-discharge control signal to charge-discharge equipment, so that the charge-discharge equipment completes charge-discharge operation on the battery according to the charge-discharge control signal; by adopting the method, reliable and accurate control between the charging and discharging equipment and the battery can be realized on the premise of not depending on the operation skills of testers, so that the control problem caused by different protocols between the charging and discharging equipment and the battery is solved, the test precision and safety are improved, and the test cost is reduced. And resource waste and environmental protection problems caused by comprehensive replacement of new equipment are reduced, and high difficulty and economic cost of hardware upgrading are avoided at the same time.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy battery performance testing, and specifically relates to a charging and discharging control method between a charging and discharging device and a battery, and related equipment. Background Art

[0002] Regarding the communication protocol compatibility issues encountered in the charging and discharging performance test of new energy vehicle power batteries, that is, some batteries use the CAN communication protocol while others use the more advanced CANFD communication protocol. Since some old charging and discharging equipment only supports the CAN protocol but not the CANFD protocol, when facing some CANFD protocol batteries, it is often impossible to perform regular charging and discharging tests on the batteries because the information of the internal sensors of the batteries cannot be read. It can be seen that the limitations of existing charging and discharging equipment in communication protocol support have brought considerable challenges to the testing work, which not only affects the comprehensiveness and accuracy of the test, but also limits the improvement of test efficiency, especially in the face of the growing demand for CANFD protocol batteries.

[0003] In the face of the above problems, there are three conventional solutions: the first is to make old charging and discharging equipment compatible with the CANFD protocol through hardware upgrades. Although this provides an effective solution path, it is not a panacea. Not all charging and discharging equipment has the ability to upgrade. Technical or design limitations may make it impossible for some charging and discharging equipment to complete this transformation, and thus still face the dilemma of being unable to test CANFD protocol batteries; the second is to fully replace them with new equipment that supports the CANFD protocol. Although this solution can fundamentally solve the problem, the full deployment of new equipment will undoubtedly incur high economic costs, and the scrapping of old equipment will also cause environmental protection and resource waste problems, which is not in line with the concept of sustainable development; the third is that the tester manually controls the charging and discharging equipment. Even if the charging and discharging equipment cannot read the battery protocol, the battery can be tested. Although the test can be continued to a certain extent, it is highly dependent on the tester's operating skills and reaction speed. Not only is the test accuracy difficult to guarantee, but there are also major safety hazards.

[0004] It can be seen that, with regard to the problem of different protocols between charging and discharging equipment and batteries, the existing solution cannot achieve reliable and precise control between the charging and discharging equipment and the battery without relying on the operating skills of the testers. Summary of the invention

[0005] The purpose of the present invention is to provide a method and related equipment for controlling charging and discharging between a charging and discharging device and a battery, so as to solve the problem that the protocols between the charging and discharging device and the battery are different. The existing solution cannot achieve the technical problem of reliable and accurate control between the charging and discharging device and the battery without relying on the operating skills of the tester.

[0006] In order to meet the above purpose, the present invention adopts the following technical solutions: A charging and discharging control method between a charging and discharging device and a battery, comprising: Acquire and update battery sensor information in real time; Generate a charge and discharge control signal based on the judgment result that the sensor information of the battery meets the preset conditions; The charge and discharge control signal is transmitted to the charge and discharge device so that the charge and discharge device can perform charge and discharge operations on the battery according to the charge and discharge control signal.

[0007] Furthermore, the sensor information of the battery includes temperature, single cell voltage, current, and relay closure information.

[0008] Furthermore, the acquired sensor information of the battery is stored in an information database; the sensor information of the battery is acquired from the host computer software of the battery BMS, and the original battery sensor information of the information database is replaced according to the latest acquired battery sensor information to achieve real-time update.

[0009] Furthermore, the specific steps of generating the charge and discharge control signal based on the judgment result that the battery sensor information meets the preset conditions are as follows: Compare the sensor information of the battery with the preset conditions; If it is determined that the sensor information of the battery meets the preset conditions, the judgment result that meets the conditions is output, and a charge and discharge control signal is generated according to the judgment result that meets the conditions; otherwise, no action is performed.

[0010] Further, the battery rest time in the sensor information of the battery is obtained; the battery rest time is judged against the preset rest time value; if it is judged that the battery rest time reaches the preset rest time value in the preset condition, a judgment result satisfying the preset rest time value is output, and a first constant current charging signal is generated according to the judgment result satisfying the preset rest time value; The highest cell voltage in the obtained sensor information of the battery is judged against the preset value of the highest cell voltage; if it is judged that the highest cell voltage satisfies the first preset value of the highest cell voltage, the judgment result of the first satisfied cell voltage is output, and the second constant current charging signal is generated according to the judgment result of the first satisfied cell voltage; if it is judged that the highest cell voltage satisfies the second preset value of the highest cell voltage, the judgment result of the second satisfied cell voltage is output, and the third constant current charging signal is generated according to the judgment result of the second satisfied cell voltage.

[0011] Furthermore, the charge and discharge program in the charge and discharge device is controlled according to the charge and discharge control signal so as to jump to complete the charge and discharge operation.

[0012] A charging and discharging control system between a charging and discharging device and a battery, comprising: Battery acquisition module, used to obtain and update battery sensor information in real time; A control signal generating module, used to generate a charge and discharge control signal based on a judgment result that the sensor information of the battery meets a preset condition; The charge and discharge control module is used to transmit the charge and discharge control signal to the charge and discharge device so that the charge and discharge device can charge and discharge the battery according to the charge and discharge control signal.

[0013] A device comprising: Memory for storing computer programs; The processor is used to implement the steps of the above-mentioned charge and discharge control method between the charge and discharge device and the battery when executing the computer program.

[0014] A computer-readable storage medium stores a computer program, which, when executed by a processor, is used to implement the steps of the above-mentioned method for controlling charging and discharging between a charging and discharging device and a battery.

[0015] A computer program product includes a computer program / instruction, which, when executed by a processor, implements the steps of the above-mentioned method for controlling charging and discharging between a charging and discharging device and a battery.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a charge and discharge control method between a charge and discharge device and a battery. The method firstly acquires sensor information of the battery in real time, and updates the sensor information of the battery in real time, generates a charge and discharge control signal according to a judgment result that the sensor information of the battery meets a preset condition, and finally transmits the charge and discharge control signal to the charge and discharge device, so that the charge and discharge device completes the charge and discharge operation on the battery according to the charge and discharge control signal; the method can realize reliable and accurate control between the charge and discharge device and the battery without relying on the operating skills of the test personnel, thereby solving the control problem caused by the different protocols between the charge and discharge device and the battery, improving the accuracy and safety of the test, reducing the waste of resources and environmental protection problems caused by the comprehensive replacement of new equipment, and avoiding the high difficulty and economic cost of hardware upgrade.

[0017] Preferably, in the present invention, the sensor information of the battery includes key parameters such as temperature, single cell voltage, current, relay closure information, etc.; this information is crucial for determining the state of the battery and generating accurate charge and discharge control signals, thereby further improving the accuracy and safety of charge and discharge control.

[0018] Preferably, in the present invention, by storing the acquired battery sensor information in an information database and updating this information in real time from the host computer software of the battery BMS, it is ensured that the control method can make decisions based on the latest and most accurate data; this enhances the real-time and accuracy of the control method and improves the reliability and stability of charge and discharge control.

[0019] Preferably, in the present invention, the method can generate a charge and discharge control signal based on whether the sensor information of the battery meets the preset conditions; this ensures that the charge and discharge operation will only be performed when the battery status meets the safety charge and discharge requirements, thereby effectively avoiding safety hazards caused by abnormal battery status.

[0020] Further preferably, in the present invention, the method generates constant current charging signals at different stages by judging parameters such as the static time and the maximum cell voltage of the battery; such a charge and discharge control strategy can better adapt to different states and requirements of the battery, thereby improving the efficiency of charge and discharge and the service life of the battery. At the same time, it also ensures the safety and stability of the battery during the charge and discharge process.

[0021] Preferably, in the present invention, the method controls the charge and discharge program in the charge and discharge device according to the charge and discharge control signal to make it jump to complete the charge and discharge operation, thereby realizing seamless connection and coordinated work between the charge and discharge device and the battery, thus greatly improving the automation and intelligence level of the charge and discharge operation, reducing the possibility of manual intervention and misoperation, and thus improving the efficiency and safety of the entire charge and discharge system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A working mode diagram of the battery BMS host computer software A provided in an embodiment of the present invention; Figure 2 A control mode diagram of the upper computer software B of the charging and discharging equipment provided in an embodiment of the present invention; Figure 3 A flow chart of a method for controlling charging and discharging between a charging and discharging device and a battery provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a charge and discharge control system between a charge and discharge device and a battery provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] Example 1 As described in the background technology, in the process of charging and discharging performance testing of power batteries of new energy vehicles, charging and discharging equipment is required; some batteries use CAN communication protocol, and some batteries use CANFD communication protocol. Since some old charging and discharging equipment only supports CAN protocol but not CANFD protocol, when facing some CANFD protocol batteries, it is often impossible to perform regular charging and discharging tests on the batteries because the information of the internal sensors of the batteries cannot be read.

[0024] In order to meet the above objectives, the present invention provides a charge and discharge control method between a charge and discharge device and a battery. The method can realize communication and interaction between a battery and a charge and discharge device using different protocols, and perform battery charge and discharge tests according to test requirements without relying on manual operation and without upgrading and re-deploying the charge and discharge equipment, which greatly improves the test efficiency and ensures the accuracy of battery charging and discharging.

[0025] This embodiment provides a charge and discharge control method between a charge and discharge device and a battery, that is, provides an interaction means between the battery and the charge and discharge device, and is compatible with the control programs of the battery and the charge and discharge device.

[0026] The battery control program, software A is the upper computer software of the battery BMS; The control program of the charging and discharging equipment, software B is the upper computer software of the charging and discharging equipment; like Figure 1 As shown, Figure 1 This is the working mode of the battery BMS host computer software A. During the test, the battery BMS will transmit the signals of various sensors inside the battery (mainly including temperature, single cell voltage, current, relay closure status, etc.) through the CAN line, and the CAN line is connected to the computer, so that the battery status information is displayed on the interface of software A in the computer.

[0027] like Figure 2 As shown, Figure 2 This is the control mode of the upper computer software B of the charging and discharging device. Software B can control the charging current and voltage, discharge current and voltage of the charging and discharging device, so as to charge and discharge the battery at different rates. The charging and discharging device that does not support the CANFD protocol cannot read the status information of the CANFD protocol battery, so it cannot use this information as a parameter to jump to the program.

[0028] When both the charging and discharging device and the battery support CANFD, the charging and discharging device can be connected to the battery through the CAN line to obtain the sensor information inside the battery (such as temperature, single cell voltage, current, relay closure information, etc.). The charging and discharging program can be set in software B. A typical case is: after standing for a period of time and meeting the first preset condition (such as the standing time reaches 1 hour), the battery is charged with a constant current of 1C; after meeting the second preset condition (such as the highest single cell voltage reaches 3600mV), the battery is charged with a constant current of 0.5C; after meeting the third preset condition (such as the single cell voltage reaches 3650mV), the battery is charged.

[0029] At present, old charging and discharging equipment cannot support the CANFD communication protocol, so it cannot read the internal sensor information of the battery, and it cannot allow the charging and discharging program to jump automatically. Therefore, this embodiment provides a charging and discharging control method between a charging and discharging device and a battery, and the specific steps include: Read the battery internal sensor information stored in real time in the battery software A; Taking the internal sensor information of the battery as a condition, that is, judging by the internal sensor information of the battery and the preset conditions, generating corresponding charge and discharge control signals according to the judgment results, and then transmitting them to the charge and discharge equipment; The charge and discharge control signal is realized by clicking on the interface of the charge and discharge equipment software B, thereby realizing automatic control of the charge and discharge program; This method has the permission to read files in the computer, so it can read the storage files of software A. The storage files of software A are updated in real time, so this method can click the specified position of the computer user interface in real time when the sensor information inside the battery changes, so as to jump the charging and discharging program in software B.

[0030] During the charging process, the highest cell voltage of the battery reaches 3600mV. This method is used to replace and modify the highest cell voltage of the battery obtained in real time, and the parameter of the highest cell voltage is replaced with 3600mV. The software B of the charging and discharging device reads the parameter value of the highest cell voltage in the storage file as 3600mV, so the designated position P of the computer user interface is clicked. The program jump button of this control method is pre-placed at the P position of the computer user interface. Under the click operation of software B, the charging and discharging program jumps from 1C constant current charging to 0.5C constant current charging.

[0031] Here, the above C represents a technical term in the field of charging and discharging, that is, the C rate, which means that if a fully (discharged) battery is fully (discharged) charged with constant current for 1 hour, then the charge (discharge) rate at this time is called 1C, and if the battery is fully (discharged) charged with constant current for 2 hours, then the charge (discharge) rate at this time is called 0.5C, and if the battery is fully (discharged) charged with constant current for 0.5 hours, then the charge (discharge) rate at this time is called 2C.

[0032] It can be seen that the charge and discharge control method between a charge and discharge device and a battery provided by the present method can realize communication and interaction between charge and discharge devices using different protocols and batteries without relying on professional operators and upgrading and re-deploying charge and discharge equipment, thereby ensuring smooth charge and discharge testing, with high test accuracy, high test efficiency and high safety.

[0033] Example 2 The present invention provides a charge and discharge control method between a charge and discharge device and a battery, such as Figure 3 As shown, the following steps are included: S1: Acquire and update the battery sensor information in real time; specifically, the battery sensor information includes temperature, single cell voltage, current, and relay closure information.

[0034] S2: Generate a charge and discharge control signal based on the judgment result that the sensor information of the battery meets the preset conditions; S3: transmitting the charge and discharge control signal to the charge and discharge device, so that the charge and discharge device can charge and discharge the battery according to the charge and discharge control signal; that is, controlling the charge and discharge program in the charge and discharge device according to the charge and discharge control signal to make it jump to complete the charge and discharge operation.

[0035] More specific steps are: storing the acquired sensor information of the battery in an information database; acquiring the sensor information of the battery from the host computer software of the battery BMS, and replacing the original battery sensor information in the information database with the latest acquired battery sensor information to achieve real-time update.

[0036] The specific steps of generating the charge and discharge control signal based on the judgment result that the sensor information of the battery meets the preset conditions are as follows: Compare the sensor information of the battery with the preset conditions; If it is determined that the sensor information of the battery meets the preset conditions, the judgment result that meets the conditions is output, and a charge and discharge control signal is generated according to the judgment result that meets the conditions; otherwise, no action is performed.

[0037] Specifically, the battery rest time in the sensor information of the battery is obtained; the battery rest time is judged against the preset rest time value; if it is judged that the battery rest time reaches the preset rest time value in the preset condition, a judgment result satisfying the preset rest time value is output, and a first constant current charging signal is generated according to the judgment result satisfying the preset rest time value; The highest cell voltage in the obtained sensor information of the battery is judged against the preset value of the highest cell voltage; if it is judged that the highest cell voltage satisfies the first preset value of the highest cell voltage, the judgment result of the first satisfied cell voltage is output, and the second constant current charging signal is generated according to the judgment result of the first satisfied cell voltage; if it is judged that the highest cell voltage satisfies the second preset value of the highest cell voltage, the judgment result of the second satisfied cell voltage is output, and the third constant current charging signal is generated according to the judgment result of the second satisfied cell voltage.

[0038] like Figure 4 As shown, the present invention also provides a charge and discharge control system between a charge and discharge device and a battery, comprising: a battery acquisition module, used to acquire and update the sensor information of the battery in real time; a control signal generation module, used to generate a charge and discharge control signal based on the judgment result that the sensor information of the battery meets the preset conditions; a charge and discharge control module, used to transmit the charge and discharge control signal to the charge and discharge device, so that the charge and discharge device can perform charge and discharge operations on the battery according to the charge and discharge control signal.

[0039] The present invention also provides a device, comprising: a memory for storing a computer program; a processor for implementing the steps of the charging and discharging control method between the charging and discharging device and the battery when executing the computer program.

[0040] When the processor executes the computer program, the steps of charge and discharge control between the above-mentioned charge and discharge device and the battery are implemented, for example: real-time acquisition and update of sensor information of the battery; based on the judgment result that the sensor information of the battery meets the preset conditions, generating a charge and discharge control signal; transmitting the charge and discharge control signal to the charge and discharge device, so that the charge and discharge device performs charge and discharge operations on the battery according to the charge and discharge control signal.

[0041] Alternatively, the processor implements the functions of each module in the above system when executing the computer program, for example: a battery acquisition module, used to acquire and update the sensor information of the battery in real time; a control signal generation module, used to generate a charge and discharge control signal based on the judgment result that the sensor information of the battery meets the preset conditions; a charge and discharge control module, used to transmit the charge and discharge control signal to the charge and discharge device, so that the charge and discharge device can perform charge and discharge operations on the battery according to the charge and discharge control signal.

[0042] Exemplarily, the computer program may be divided into one or more modules / units, and the one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of completing preset functions, and the instruction segments are used to describe the execution process of the computer program in the charge and discharge control device between the charge and discharge device and the battery. For example, the computer program may be divided into a battery acquisition module, a control signal generation module, and a charge and discharge control module; the specific functions of each module are as follows: a battery acquisition module, used to acquire and update the sensor information of the battery in real time; a control signal generation module, used to generate a charge and discharge control signal based on the judgment result that the sensor information of the battery meets the preset conditions; a charge and discharge control module, used to transmit the charge and discharge control signal to the charge and discharge device, so that the charge and discharge device can charge and discharge the battery according to the charge and discharge control signal.

[0043] The charge and discharge control device between the charge and discharge device and the battery can be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The charge and discharge control device between the charge and discharge device and the battery may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that the above are examples of charge and discharge control devices between the charge and discharge device and the battery, and do not constitute a limitation on the charge and discharge control device between the charge and discharge device and the battery, and may include more components than the above, or a combination of certain components, or different components, for example, the charge and discharge control device between the charge and discharge device and the battery may also include input and output devices, network access devices, buses, etc.

[0044] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The processor is the control center of the charge and discharge control between the charge and discharge device and the battery, and uses various interfaces and lines to connect various parts of the charge and discharge control device between the entire charge and discharge device and the battery.

[0045] The memory can be used to store the computer program and / or module, and the processor implements various functions of the charge and discharge control device between the charge and discharge device and the battery by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0046] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0047] The present invention also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the method for controlling charging and discharging between a charging and discharging device and a battery are implemented.

[0048] If the module / unit integrated in the charge and discharge control system between the charge and discharge device and the battery is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.

[0049] Based on such understanding, the present invention implements all or part of the processes in the above-mentioned charge-discharge control method between the charge-discharge device and the battery, and can also be completed by instructing related hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, the steps of the charge-discharge control method between the charge-discharge device and the battery can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or preset intermediate form, etc.

[0050] The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0051] It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electrical carrier signals and telecommunication signals.

[0052] In summary, the present invention provides a method for controlling charging and discharging between a charging and discharging device and a battery, which has the following advantages over existing control communication measures: The present invention provides a charge and discharge control method between a charge and discharge device and a battery. The method can ensure that the charge and discharge control process between the charge and discharge device and the battery is performed based on the most accurate data by acquiring and updating the sensor information (including temperature, cell voltage, current, relay closing information, etc.) of the battery in real time, thereby greatly improving the accuracy and safety of the charge and discharge control. Secondly, a charge and discharge control signal is generated based on the judgment result that the sensor information of the battery meets the preset conditions, thereby realizing the intelligent management of the charge and discharge process and avoiding the charge and discharge accidents caused by the abnormal battery state. Furthermore, the sensor information of the battery is stored in an information database, and the latest information is obtained from the upper computer software of the battery BMS to replace the original data, thereby ensuring the real-time and accuracy of the information and providing reliable data support for the charge and discharge control. In addition, the method also provides specific steps for generating different charge and discharge control signals based on different conditions, such as generating different constant current charging signals according to different preset values ​​of the battery standing time and the highest cell voltage, so that the charge and discharge process is more flexible and efficient. Finally, the charge and discharge program in the charge and discharge device is controlled according to the charge and discharge control signal, thereby realizing the intelligent jump of the program and ensuring the smooth completion of the charge and discharge operation. In summary, this method shows significant beneficial effects in improving the accuracy, safety, intelligence and flexibility of charge and discharge control.

[0053] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. A charging and discharging control method between a charging and discharging device and a battery, characterized in that: include: Acquire and update battery sensor information in real time; Generate a charge and discharge control signal based on the judgment result that the sensor information of the battery meets the preset conditions; The charge and discharge control signal is transmitted to the charge and discharge device so that the charge and discharge device can perform charge and discharge operations on the battery according to the charge and discharge control signal.

2. The charge and discharge control method between the charge and discharge device and the battery according to claim 1, characterized in that: The sensor information of the battery includes temperature, single cell voltage, current, and relay closure information.

3. The charge and discharge control method between the charge and discharge device and the battery according to claim 1, characterized in that: The acquired sensor information of the battery is stored in an information database; the sensor information of the battery is acquired from the host computer software of the battery BMS, and the original battery sensor information of the information database is replaced according to the latest acquired battery sensor information to achieve real-time update.

4. The charge and discharge control method between the charge and discharge device and the battery according to claim 1, characterized in that: The specific steps of generating the charge and discharge control signal based on the judgment result that the battery sensor information meets the preset conditions are as follows: Compare the sensor information of the battery with the preset conditions; If it is determined that the sensor information of the battery meets the preset conditions, the judgment result of meeting the conditions is output, and a charge and discharge control signal is generated according to the judgment result of meeting the conditions; Otherwise, no action is performed.

5. The charge and discharge control method between the charge and discharge device and the battery according to claim 4, characterized in that: Obtaining the battery rest time from the sensor information of the battery; judging the battery rest time against the preset rest time value; if it is judged that the battery rest time reaches the preset rest time value in the preset condition, outputting a judgment result that satisfies the preset rest time value, and generating a first constant current charging signal according to the judgment result that satisfies the preset rest time value; Determine the maximum cell voltage in the obtained sensor information of the battery and the preset value of the maximum cell voltage; If it is determined that the highest cell voltage satisfies the first highest cell voltage preset value, a first determination result of satisfying the cell voltage is output, and a second constant current charging signal is generated according to the first determination result of satisfying the cell voltage; If it is determined that the highest cell voltage satisfies the second highest cell voltage preset value, a determination result of the second satisfied cell voltage is output, and a third constant current charging signal is generated according to the determination result of the second satisfied cell voltage.

6. The charge and discharge control method between the charge and discharge device and the battery according to claim 1, characterized in that: The charge and discharge program in the charge and discharge device is controlled according to the charge and discharge control signal so as to jump to complete the charge and discharge operation.

7. A charging and discharging control system between a charging and discharging device and a battery, characterized in that: include: Battery acquisition module, used to obtain and update battery sensor information in real time; A control signal generating module, used to generate a charge and discharge control signal based on a judgment result that the sensor information of the battery meets a preset condition; The charge and discharge control module is used to transmit the charge and discharge control signal to the charge and discharge device so that the charge and discharge device can charge and discharge the battery according to the charge and discharge control signal.

8. A device, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the method for controlling charging and discharging between a charging and discharging device and a battery as described in any one of claims 1 to 6 when executing the computer program.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, it is used to implement the steps of the method for controlling charging and discharging between a charging and discharging device and a battery as described in any one of claims 1 to 6.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instruction is executed by a processor, the steps of the method for controlling charging and discharging between a charging and discharging device and a battery as described in claims 1-6 are implemented.

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