Storage battery automatic charging and discharging test system and method

Abstract

The invention relates to the technical field of storage battery charging and discharging tests, in particular to an automatic storage battery charging and discharging test system and method. A control module in the integrated controller is used for controlling a charging switch connected between the charging device and the storage battery pack to be switched off and controlling a discharging switch connected between the discharging device and the storage battery pack to be switched on to start discharging; if the discharge stage is abnormal, the control module controls the discharge switch to be switched off, and the test is stopped; if the discharging stage is completed, the control module is used for controlling the discharging switch to be switched off and the charging switch to be switched on to start charging; if the charging stage is abnormal, the control module controls the charging switch to be switched off, and the test is stopped; and if the charging stage is completed, the control module is used for continuing to a preset time period, the storage battery pack is converted into a floating charge state, and the test is completed. The accuracy, the reliability and the economical efficiency of the storage battery charging and discharging test are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery charge and discharge testing, and in particular to a battery automatic charge and discharge testing system and method. Background Art

[0002] In modern power systems, batteries serve as the core energy storage components of substations. The stability and reliability of their performance have a decisive impact on the continuity and safety of power supply. Batteries not only provide stable power supply for the protection and test systems of substations, but also assume the basic function of maintaining DC bus voltage stability in intelligent DC parallel power supply systems. In addition, battery packs serve as backup power sources in the event of grid failures or abnormalities, providing uninterrupted power support for critical loads, thereby ensuring the safe and stable operation of the power system. With the rapid development of power transmission technology and renewable energy systems, more stringent requirements have been placed on the technical indicators of battery performance, especially in terms of high reliability, long life, fast response, and efficient energy conversion. Therefore, battery performance verification is necessary.

[0003] During battery operation, charge and discharge tests are the core means to verify whether their performance meets the indicators. However, in the existing technology, battery charge and discharge tests usually rely on manual operation, which is inefficient and consumes manpower and material resources. It may result in failure to switch to the charging state immediately after the discharge is completed, resulting in excessive discharge of the battery, or failure to switch to the floating charge state in time after the charging current drops to the specified value, causing overcharging, thereby affecting the battery life and the accuracy of the test data. At the same time, errors are prone to occur when manually reading and recording battery voltage, current, temperature and other data, which may lead to errors in the subsequent performance analysis and evaluation of the battery, affecting the reliability and effectiveness of the test. Summary of the Invention

[0004] To this end, the technical problem to be solved by the present invention is to overcome the problems in the prior art that rely on manual operation, are inefficient, cannot switch the charge and discharge states and convert to the floating charge state in time, and are prone to errors in manual reading and recording of data, which affect the accuracy, reliability and effectiveness of the battery charge and discharge test.

[0005] To solve the above technical problems, the present invention provides a battery automatic charge and discharge test system, comprising:

[0006] The battery pack monitoring device is placed in the battery room, connected to the battery, and connected to the centralized controller through the monitoring host; it is used to collect discharge data of the battery pack and each battery during the discharge phase, and charge data of the battery pack and each battery during the charge phase;

[0007] The centralized controller is placed in the panel cabinet room and is connected to the mobile terminal, charging device, and discharging device. It includes:

[0008] an initial state judgment module, configured to receive a charge and discharge test preparation signal sent by the mobile terminal and determine whether the battery pack is in a floating charge state; if the battery pack is not in a floating charge state, control the charging device to charge the battery pack until the battery pack reaches a floating charge state;

[0009] A parameter receiving module, configured to receive discharge phase parameters and charge phase parameters set in the mobile terminal after the battery pack reaches a floating charge state;

[0010] An information processing module is used to receive in real time the discharge data of the battery pack and each battery cell during the discharge phase and, in combination with the discharge phase parameters, determine whether the discharge phase is abnormal or completed; receive in real time the charging data of the battery pack and each battery cell during the charge phase and, in combination with the charging phase parameters, determine whether the charge phase is abnormal or completed;

[0011] The control module is used to control the charging switch connected between the charging device and the battery pack to be disconnected and the discharge switch connected between the discharge device and the battery pack to be closed after receiving the discharge stage parameters and the charging stage parameters, thereby entering the discharge stage of the charge and discharge test; when the discharge stage is abnormal, the discharge switch is controlled to be disconnected to stop the charge and discharge test; when the discharge stage is completed, after the battery pack dissipates heat to a temperature threshold, the discharge switch is controlled to be disconnected until the end of the monitoring period, and if the battery pack temperature does not exceed the temperature threshold during the monitoring period, the charging switch is controlled to be closed to enter the charging stage of the charge and discharge test; when the charging stage is abnormal, the charging switch is controlled to be disconnected to stop the charge and discharge test; when the charging stage is completed, after lasting for a preset period of time, the battery pack is switched to a floating charge state to complete the charge and discharge test.

[0012] Preferably, the discharge stage parameters include the battery pack discharge voltage lower limit and discharge current upper limit, the single-cell battery discharge voltage lower limit and discharge current upper limit, the battery pack discharge time upper limit, and the single-cell battery discharge temperature upper limit; the charging stage parameters include the battery pack charging voltage upper limit and charging current lower limit, the single-cell battery charging voltage upper limit and charging current lower limit, the battery pack charging time upper limit, and the single-cell battery charging temperature upper limit.

[0013] Preferably, the abnormality in the discharge stage is that the voltage of any single battery in the real-time received discharge data is lower than the lower limit of the single battery discharge voltage at the current moment, or the battery temperature of any single battery exceeds the upper limit of the single battery discharge temperature, or the discharge voltage of the battery pack is lower than the lower limit of the battery pack discharge voltage at the current moment; the completion of the discharge stage is when the set discharge time upper limit is reached, and when the discharge time upper limit is reached, the discharge voltage of each battery is not less than the lower limit of the single battery discharge voltage.

[0014] Preferably, the abnormality in the charging stage is that the current of the battery pack at the current moment in the real-time received charging data is 0, or the battery temperature of any single battery exceeds the upper limit of the charging temperature of the single battery; the completion of the charging stage is that the charging current of each battery reaches the lower limit of the charging current of the single battery, and when the charging current of each battery reaches the lower limit of the charging current of the single battery, the charging time of the battery pack does not exceed the upper limit of the charging time of the battery pack.

[0015] Preferably, the discharge data of the battery pack and each battery in the discharge stage include: the voltage and current of the battery pack at each sampling moment, the voltage, battery temperature and battery capacity of each battery cell, and the battery chamber temperature during discharge; the charging data of the battery pack and each battery in the charging stage include: the voltage and current of the battery pack at each sampling moment, the voltage, battery temperature and battery capacity of each battery cell, and the battery chamber temperature during charging.

[0016] Preferably, determining whether the battery pack is in a floating charge state includes:

[0017] If the battery pack voltage is within the preset voltage range at the current moment, it is determined that the battery pack is in a floating charge state; if the battery pack voltage is not within the preset voltage range at the current moment, it is determined that the battery pack is not in a floating charge state.

[0018] Preferably,

[0019] The charging device is placed in the panel cabinet and is used to supply power to the battery during the charging stage. It includes:

[0020] The charger module is connected to the centralized controller and is used to provide DC power.

[0021] The rectifier module is connected to the charger module and is connected to the battery through the charging switch; it is used to convert AC power into DC power;

[0022] The discharge device is placed in the panel cabinet and is used to discharge the battery during the discharge stage;

[0023] The monitoring host is placed in the battery room and connected to the battery pack monitoring module; it is used to receive and transmit to the centralized controller the discharge data of the battery pack and each battery during the discharge phase, and the charging data of the battery pack and each battery during the charging phase, as well as the discharge time and charging time.

[0024] Preferably, the centralized controller further includes:

[0025] an initialization module, configured to receive a system initialization signal sent by the mobile terminal, perform initialization operations on the system, and send a system preparation completion signal to the mobile terminal, so that after receiving the system preparation completion signal, the mobile terminal sets the discharge phase parameters and the charge phase parameters, and generates a charge-discharge test preparation signal and sends it to the initial state judgment module;

[0026] Timing module, used for timing of charge and discharge tests;

[0027] The display module is used to display the voltage and current of the battery pack at the current sampling moment in the discharge phase, the voltage, battery temperature and battery capacity of each battery cell, the discharge time, and the battery compartment temperature during discharge; and to display the voltage and current of the battery pack at the current sampling moment in the charging phase, the voltage, battery temperature and battery capacity of each battery cell, the charging time, and the battery compartment temperature during charging;

[0028] The information storage module is used to store, according to the date and time period, the voltage and current of the battery pack at each sampling moment in the discharge phase, the voltage, battery temperature and battery capacity of each battery cell, the discharge time, and the battery compartment temperature during discharge; store, according to the date and time period, the voltage and current of the battery pack at each sampling moment in the charging phase, the voltage, battery temperature and battery capacity of each battery cell, the charge time, and the battery compartment temperature during charging; and store, according to the date and time period, the operating behavior of controlling the opening and closing of the discharge switch and the charge switch in the control module.

[0029] Preferably, it also includes:

[0030] The monitoring and maintenance module is connected to the battery pack and the monitoring host; it is used to determine whether the battery pack is in a healthy state.

[0031] The present invention also provides a battery automatic charge and discharge test method, which is applied to the above-mentioned battery automatic charge and discharge test system, comprising:

[0032] Through the mobile terminal, set the discharge phase parameters and the charge phase parameters, and send the charge and discharge test preparation signal to the initial state judgment module of the centralized controller;

[0033] The initial state judgment module in the centralized controller receives the charge and discharge test preparation signal sent by the mobile terminal and determines whether the battery pack is currently in the floating charge state; if the battery pack is not in the floating charge state, the charging device is controlled to charge the battery pack until the battery pack reaches the floating charge state;

[0034] Utilizing the parameter receiving module in the centralized controller, after the battery pack reaches a floating charge state, the discharge phase parameters and the charging phase parameters set in the mobile terminal are received;

[0035] The control module in the centralized controller controls the charging switch connected between the charging device and the battery pack to be disconnected and the discharging switch connected between the discharging device and the battery pack to be closed after receiving the discharging stage parameters and the charging stage parameters, thereby entering the discharging stage of the charge and discharge test;

[0036] The information processing module in the centralized controller receives the discharge data of the battery pack and each battery in the discharge phase from the battery pack monitoring device in real time and determines whether the discharge phase is abnormal or completed in combination with the discharge phase parameters.

[0037] If the discharge stage is abnormal, the control module is used to control the discharge switch to disconnect and stop the charge and discharge test;

[0038] If the discharge phase is completed, the control module controls the battery pack to dissipate heat to a temperature threshold, then controls the discharge switch to be disconnected until the end of the monitoring period. If the battery pack temperature does not exceed the temperature threshold during the monitoring period, the charge switch is controlled to be closed, and the charge and discharge test enters the charging phase.

[0039] The signal processing module receives the charging data of the battery pack and each battery in real time and determines whether the charging stage is abnormal or completed based on the charging stage parameters.

[0040] If the charging stage is abnormal, the control module is used to control the charging switch to disconnect and stop the charge and discharge test;

[0041] If the charging stage is completed, the control module is used to continue for a preset period of time, and then the battery pack is switched to a floating charge state to complete the charge and discharge test.

[0042] The above technical solution of the present invention has the following beneficial effects compared with the prior art:

[0043] The automatic battery charge and discharge test system described in the present invention integrates a charging device, a discharging device, a monitoring device, and a centralized controller to achieve integrated data acquisition, processing, storage, and equipment control. This integrated and automated system enables efficient and accurate charge and discharge testing, capable of real-time monitoring of key battery parameters such as voltage, current, and temperature, and automatically controlling the charge and discharge process. This significantly reduces manual operation errors and resource consumption, while improving the accuracy and reliability of test data, test efficiency, and labor costs. Furthermore, the centralized controller is connected to a mobile terminal for remote operation and real-time monitoring. This ensures that the high standards of battery performance testing are met while effectively improving the safety of the charge and discharge test and the safety and stability of the power system. In particular, it can provide uninterrupted power support for critical loads in the event of a grid failure or abnormality. Furthermore, the test system meets the stringent technical requirements of modern power systems for batteries, such as high reliability, long life, rapid response, and efficient energy conversion. It supports the rapid development of power transmission technology and renewable energy systems, and provides an important guarantee for the intelligence and reliability of the power system.

[0044] The present invention discloses an automatic battery charge and discharge test method, which realizes precise control of the charge and discharge process through automation technology, automatically completes charge and discharge state switching, parameter setting and monitoring, reduces manual intervention, and improves the accuracy, reliability, effectiveness and economy of the battery charge and discharge test. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0046] Figure 1 This is a schematic diagram of a battery automatic charge and discharge test system provided by the present invention;

[0047] Figure 2 The present invention provides a flow chart of a battery automatic charging and discharging test method. DETAILED DESCRIPTION

[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0049] Reference Figure 1 As shown, Figure 1 This is a schematic diagram of a battery automatic charge and discharge test system provided by the present invention; specifically comprising:

[0050] A battery pack monitoring device is placed in the battery compartment, connected to the battery, and connected to the centralized controller via a monitoring host; it is used to collect discharge data of the battery pack and each battery cell during the discharge phase, and charge data of the battery pack and each battery cell during the charge phase; wherein the discharge data of the battery pack and each battery cell during the discharge phase include: the voltage and current of the battery pack, the voltage, battery temperature, and battery capacity of each battery cell at each sampling moment during the discharge phase, and the battery compartment temperature during discharge; the charge data of the battery pack and each battery cell during the charge phase include: the voltage and current of the battery pack, the voltage, battery temperature, and battery capacity of each battery cell at each sampling moment during the charge phase, and the battery compartment temperature during charging;

[0051] The monitoring and maintenance module is placed in the battery compartment and connected to the battery pack and the monitoring host; it is used to determine whether the battery pack is healthy. If the voltage of any single battery cell received in real time at the current moment is not within a preset voltage range, the battery pack is unhealthy; otherwise, the battery pack is healthy. In a specific embodiment of the present invention, the preset voltage range is 2.23 to 2.28V.

[0052] The monitoring host is placed in the battery room and connected to the battery pack monitoring module. It is used to receive and transmit to the centralized controller the discharge data of the battery pack and each battery cell collected during the discharge phase, the charging data of the battery pack and each battery cell collected during the charging phase, as well as the discharge time and charging time. It is also used to transmit the result of whether the battery pack is healthy to the control module of the centralized controller so that the control module can control the battery to stop working.

[0053] The charging device is placed in the panel cabinet and is used to supply power to the battery during the charging stage. It includes:

[0054] The charger module is connected to the centralized controller and is used to provide DC power.

[0055] The rectifier module is connected to the charger module and is connected to the battery through the charging switch; it is used to convert AC power into DC power;

[0056] The discharge device is placed in the panel cabinet and is used to discharge the battery during the discharge stage;

[0057] The centralized controller is placed in the panel cabinet room and is connected to the mobile terminal, charging device, and discharging device. It includes:

[0058] The initial state judgment module is configured to receive a charge and discharge test preparation signal sent by the mobile terminal and judge whether the battery pack is in a floating charge state; if the battery pack is not in a floating charge state, control the charging device to charge the battery pack until the battery pack reaches a floating charge state; wherein, in a specific embodiment of the present invention, the judging whether the battery pack is in a floating charge state includes:

[0059] If the battery pack voltage at the current moment is within the preset voltage range, it is determined that the battery pack is in a floating charge state; if the battery pack voltage at the current moment is not within the preset voltage range, it is determined that the battery pack is not in a floating charge state;

[0060] a parameter receiving module, configured to receive discharge phase parameters and charging phase parameters set in the mobile terminal after the battery pack reaches a floating charge state; wherein the discharge phase parameters include a battery pack discharge voltage lower limit and a discharge current upper limit, a single-cell battery discharge voltage lower limit and a discharge current upper limit, a battery pack discharge time upper limit, and a single-cell battery discharge temperature upper limit; and the charging phase parameters include a battery pack charge voltage upper limit and a charge current lower limit, a single-cell battery charge voltage upper limit and a charge current lower limit, a battery pack charge time upper limit, and a single-cell battery charge temperature upper limit;

[0061] An information processing module is used to receive in real time the discharge data of the battery pack and each battery cell during the discharge phase and, in combination with the discharge phase parameters, determine whether the discharge phase is abnormal or completed; receive in real time the charging data of the battery pack and each battery cell during the charge phase and, in combination with the charging phase parameters, determine whether the charge phase is abnormal or completed;

[0062] Among them, the abnormality in the discharge stage is that the voltage of any single battery in the real-time received discharge data is lower than the lower limit of the single battery discharge voltage at the current moment, or the battery temperature of any single battery exceeds the upper limit of the single battery discharge temperature, the battery continues to heat up, or the discharge voltage of the battery pack at the current moment is lower than the lower limit of the battery pack discharge voltage; the completion of the discharge stage is when the set discharge time upper limit is reached, and when the discharge time upper limit is reached, the discharge voltage of each battery is not less than the lower limit of the single battery discharge voltage; the abnormality in the charging stage is that the current of the battery pack at the current moment in the real-time received charging data is 0, or the battery temperature of any single battery exceeds the upper limit of the single battery charging temperature, and the battery continues to heat up; the completion of the charging stage is when the charging current of each battery reaches the lower limit of the single battery charging current, and when the charging current of each battery reaches the lower limit of the single battery charging current, the charging time of the battery pack does not exceed the upper limit of the battery pack charging time;

[0063] The control module is configured to, after receiving the discharge phase parameters and the charge phase parameters, control the charge switch connected between the charging device and the battery pack to be disconnected, and control the discharge switch connected between the discharge device and the battery pack to be closed, thereby entering the discharge phase of the charge and discharge test; when an abnormality occurs during the discharge phase, control the discharge switch to be disconnected, thereby stopping the charge and discharge test; when the discharge phase is completed, after the battery pack dissipates heat to a temperature threshold, control the discharge switch to be disconnected until the end of a monitoring period, and if the battery pack temperature does not exceed the temperature threshold during the monitoring period, control the charge switch to be closed, thereby entering the charge phase of the charge and discharge test; when an abnormality occurs during the charge phase, control the charge switch to be disconnected, thereby stopping the charge and discharge test; when the charge phase is completed, after lasting for a preset period of time, the battery pack is switched to a floating charge state, thereby completing the charge and discharge test;

[0064] In a specific embodiment of the present invention, the centralized controller further includes:

[0065] an initialization module, configured to receive a system initialization signal sent by the mobile terminal, perform initialization operations on the system, and send a system preparation completion signal to the mobile terminal, so that after receiving the system preparation completion signal, the mobile terminal sets the discharge phase parameters and the charge phase parameters, and generates a charge-discharge test preparation signal and sends it to the initial state judgment module;

[0066] Timing module, used for timing of charge and discharge tests;

[0067] The display module is used to display the voltage and current of the battery pack at the current sampling moment in the discharge phase, the voltage, battery temperature and battery capacity of each battery cell, the discharge time, and the battery compartment temperature during discharge; and to display the voltage and current of the battery pack at the current sampling moment in the charging phase, the voltage, battery temperature and battery capacity of each battery cell, the charging time, and the battery compartment temperature during charging;

[0068] The information storage module is used to store the voltage and current of the battery pack at each sampling moment in the discharge phase, the voltage, battery temperature and battery capacity of each battery, the discharge time, and the battery compartment temperature during discharge according to the date and time period; store the voltage and current of the battery pack at each sampling moment in the charging phase, the voltage, battery temperature and battery capacity of each battery, the charging time, and the battery compartment temperature during charging according to the date and time period; and store the operation behavior of controlling the opening and closing of the discharge switch and the charging switch in the control module according to the date and time period, so that the staff can call the data of the battery charge and discharge test and the specific operation records of the control module on the charging and discharging of the battery pack according to work needs.

[0069] Reference Figure 2 As shown, Figure 2 This is a flow chart of a battery automatic charge and discharge test method provided by the present invention; specifically including:

[0070] Through the mobile terminal, set the discharge phase parameters and the charge phase parameters, and send the charge and discharge test preparation signal to the initial state judgment module of the centralized controller;

[0071] The initial state judgment module in the centralized controller receives the charge and discharge test preparation signal sent by the mobile terminal and determines whether the battery pack is currently in the floating charge state; if the battery pack is not in the floating charge state, the charging device is controlled to charge the battery pack until the battery pack reaches the floating charge state;

[0072] Utilizing the parameter receiving module in the centralized controller, after the battery pack reaches a floating charge state, the discharge phase parameters and the charging phase parameters set in the mobile terminal are received;

[0073] The control module in the centralized controller controls the charging switch connected between the charging device and the battery pack to be disconnected and the discharging switch connected between the discharging device and the battery pack to be closed after receiving the discharging stage parameters and the charging stage parameters, thereby entering the discharging stage of the charge and discharge test;

[0074] The information processing module in the centralized controller receives the discharge data of the battery pack and each battery in the discharge phase from the battery pack monitoring device in real time and determines whether the discharge phase is abnormal or completed in combination with the discharge phase parameters.

[0075] If the discharge stage is abnormal, the control module is used to control the discharge switch to disconnect and stop the charge and discharge test;

[0076] If the discharge phase is completed, the control module controls the battery pack to dissipate heat to a temperature threshold, then controls the discharge switch to be disconnected until the end of the monitoring period. If the battery pack temperature does not exceed the temperature threshold during the monitoring period, the charge switch is controlled to be closed, and the charge phase of the charge-discharge test is entered. Since the battery will generate heat during the discharge phase, the battery needs to be cooled after the discharge phase is completed. When the temperature threshold is reached, the control module controls the discharge switch to be disconnected. After the discharge switch is disconnected, it is necessary to monitor for at least two hours to ensure that the battery pack is not abnormally heated. Then, the control module controls the charge switch to be closed to charge. If the battery pack is abnormally heated during the monitoring period, the charge-discharge test needs to be stopped.

[0077] The signal processing module receives the charging data of the battery pack and each battery in real time and determines whether the charging stage is abnormal or completed based on the charging stage parameters.

[0078] If the charging stage is abnormal, the control module is used to control the charging switch to disconnect and stop the charge and discharge test;

[0079] If the charging stage is completed, the control module is used to continue for a preset period of time, and then the battery pack is switched to a floating charge state to complete the charge and discharge test.

[0080] In a specific embodiment of the present invention, before setting the discharge phase parameters and the charge phase parameters through the mobile terminal, the method further includes:

[0081] Using a mobile terminal, a system initialization signal is sent to the initialization module in the centralized controller;

[0082] The initialization module in the centralized controller receives the system initialization signal, performs initialization operations on the system, and sends a system preparation completion signal to the mobile terminal.

[0083] Using the mobile terminal, receive the system ready completion signal.

[0084] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0085] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0086] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0087] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0088] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A battery automatic charge and discharge test system, characterized in that: include: The battery pack monitoring device is placed in the battery room, connected to the battery, and connected to the centralized controller through the monitoring host; Used to collect discharge data of the battery pack and each battery in the discharge phase, and charge data of the battery pack and each battery in the charge phase; The centralized controller is placed in the panel cabinet room and is connected to the mobile terminal, charging device, and discharging device. It includes: an initial state judgment module, configured to receive a charge and discharge test preparation signal sent by the mobile terminal and determine whether the battery pack is in a floating charge state; if the battery pack is not in a floating charge state, control the charging device to charge the battery pack until the battery pack reaches a floating charge state; A parameter receiving module, configured to receive discharge phase parameters and charge phase parameters set in the mobile terminal after the battery pack reaches a floating charge state; An information processing module is used to receive in real time the discharge data of the battery pack and each battery cell during the discharge phase and, in combination with the discharge phase parameters, determine whether the discharge phase is abnormal or completed; receive in real time the charging data of the battery pack and each battery cell during the charge phase and, in combination with the charging phase parameters, determine whether the charge phase is abnormal or completed; The control module is used to control the charging switch connected between the charging device and the battery pack to be disconnected and the discharge switch connected between the discharge device and the battery pack to be closed after receiving the discharge stage parameters and the charging stage parameters, thereby entering the discharge stage of the charge and discharge test; when the discharge stage is abnormal, the discharge switch is controlled to be disconnected to stop the charge and discharge test; when the discharge stage is completed, after the battery pack dissipates heat to a temperature threshold, the discharge switch is controlled to be disconnected until the end of the monitoring period, and if the battery pack temperature does not exceed the temperature threshold during the monitoring period, the charging switch is controlled to be closed to enter the charging stage of the charge and discharge test; when the charging stage is abnormal, the charging switch is controlled to be disconnected to stop the charge and discharge test; when the charging stage is completed, after lasting for a preset period of time, the battery pack is switched to a floating charge state to complete the charge and discharge test.

2. A battery automatic charge and discharge test system according to claim 1, characterized in that: The discharge stage parameters include the battery pack discharge voltage lower limit and discharge current upper limit, the single battery discharge voltage lower limit and discharge current upper limit, the battery pack discharge time upper limit, and the single battery discharge temperature upper limit; The charging stage parameters include the upper limit of the battery pack charging voltage and the lower limit of the charging current, the upper limit of the single battery charging voltage and the lower limit of the charging current, the upper limit of the battery pack charging time, and the upper limit of the single battery charging temperature.

3. A battery automatic charge and discharge test system according to claim 2, characterized in that: The discharge phase abnormality is that the voltage of any single battery in the real-time received discharge data is lower than the single battery discharge voltage lower limit at the current moment, or the battery temperature of any single battery exceeds the single battery discharge temperature upper limit, or the discharge voltage of the battery pack is lower than the battery pack discharge voltage lower limit at the current moment; The discharge stage is completed when the set upper limit of discharge time is reached, and when the upper limit of discharge time is reached, the discharge voltage of each battery is not less than the lower limit of the discharge voltage of a single battery.

4. A battery automatic charge and discharge test system according to claim 2, characterized in that: The abnormality in the charging stage is that the current of the battery pack at the current moment in the real-time received charging data is 0, or the battery temperature of any single battery exceeds the upper limit of the charging temperature of the single battery; The charging stage is completed when the charging current of each battery reaches the lower limit of the charging current of a single battery, and when the charging current of each battery reaches the lower limit of the charging current of a single battery, the charging time of the battery pack does not exceed the upper limit of the charging time of the battery pack.

5. The battery automatic charge and discharge test system according to claim 1, characterized in that: The discharge data of the battery pack and each battery cell during the discharge phase include: the voltage and current of the battery pack at each sampling moment, the voltage, battery temperature and battery capacity of each battery cell, and the battery compartment temperature during discharge; the charging data of the battery pack and each battery cell during the charging phase include: the voltage and current of the battery pack at each sampling moment, the voltage, battery temperature and battery capacity of each battery cell, and the battery compartment temperature during charging.

6. A battery automatic charge and discharge test system according to claim 1, characterized in that: Determining whether the battery pack is in a floating charge state includes: If the battery pack voltage is within the preset voltage range at the current moment, it is determined that the battery pack is in a floating charge state; if the battery pack voltage is not within the preset voltage range at the current moment, it is determined that the battery pack is not in a floating charge state.

7. The battery automatic charge and discharge test system according to claim 1, characterized in that: The charging device is placed in the panel cabinet and is used to supply power to the battery during the charging stage. It includes: The charger module is connected to the centralized controller and is used to provide DC power. The rectifier module is connected to the charger module and is connected to the battery through the charging switch; it is used to convert AC power into DC power; The discharge device is placed in the panel cabinet and is used to discharge the battery during the discharge stage; The monitoring host is placed in the battery room and connected to the battery pack monitoring module; it is used to receive and transmit to the centralized controller the discharge data of the battery pack and each battery during the discharge phase, and the charging data of the battery pack and each battery during the charging phase, as well as the discharge time and charging time.

8. The battery automatic charge and discharge test system according to claim 1, characterized in that: The centralized controller also includes: an initialization module, configured to receive a system initialization signal sent by the mobile terminal, perform initialization operations on the system, and send a system preparation completion signal to the mobile terminal, so that after receiving the system preparation completion signal, the mobile terminal sets the discharge phase parameters and the charge phase parameters, and generates a charge-discharge test preparation signal and sends it to the initial state judgment module; Timing module, used for timing of charge and discharge tests; The display module is used to display the voltage and current of the battery pack at the current sampling moment in the discharge phase, the voltage, battery temperature and battery capacity of each battery cell, the discharge time, and the battery compartment temperature during discharge; and to display the voltage and current of the battery pack at the current sampling moment in the charging phase, the voltage, battery temperature and battery capacity of each battery cell, the charging time, and the battery compartment temperature during charging; The information storage module is used to store, according to the date and time period, the voltage and current of the battery pack at each sampling moment in the discharge phase, the voltage, battery temperature and battery capacity of each battery cell, the discharge time, and the battery compartment temperature during discharge; store, according to the date and time period, the voltage and current of the battery pack at each sampling moment in the charging phase, the voltage, battery temperature and battery capacity of each battery cell, the charge time, and the battery compartment temperature during charging; and store, according to the date and time period, the operating behavior of controlling the opening and closing of the discharge switch and the charge switch in the control module.

9. The battery automatic charge and discharge test system according to claim 1, characterized in that: Also includes: Monitoring and maintenance module, connected to the battery pack and monitoring host; Used to determine whether the battery pack is healthy.

10. A battery automatic charge and discharge test method, characterized in that: A battery automatic charge and discharge test system according to any one of claims 1 to 9 comprises: Through the mobile terminal, set the discharge phase parameters and the charge phase parameters, and send the charge and discharge test preparation signal to the initial state judgment module of the centralized controller; The initial state judgment module in the centralized controller receives the charge and discharge test preparation signal sent by the mobile terminal and determines whether the battery pack is currently in the floating charge state; if the battery pack is not in the floating charge state, the charging device is controlled to charge the battery pack until the battery pack reaches the floating charge state; Utilizing the parameter receiving module in the centralized controller, after the battery pack reaches a floating charge state, the discharge phase parameters and the charging phase parameters set in the mobile terminal are received; The control module in the centralized controller controls the charging switch connected between the charging device and the battery pack to be disconnected and the discharging switch connected between the discharging device and the battery pack to be closed after receiving the discharging stage parameters and the charging stage parameters, thereby entering the discharging stage of the charge and discharge test; The information processing module in the centralized controller receives the discharge data of the battery pack and each battery in the discharge phase from the battery pack monitoring device in real time and determines whether the discharge phase is abnormal or completed in combination with the discharge phase parameters. If the discharge stage is abnormal, the control module is used to control the discharge switch to disconnect and stop the charge and discharge test; If the discharge phase is completed, the control module controls the battery pack to dissipate heat to a temperature threshold, then controls the discharge switch to be disconnected until the end of the monitoring period. If the battery pack temperature does not exceed the temperature threshold during the monitoring period, the charge switch is controlled to be closed, and the charge and discharge test enters the charging phase. The signal processing module receives the charging data of the battery pack and each battery in real time and determines whether the charging stage is abnormal or completed based on the charging stage parameters. If the charging stage is abnormal, the control module is used to control the charging switch to disconnect and stop the charge and discharge test; If the charging stage is completed, the control module is used to continue for a preset period of time, and then the battery pack is switched to a floating charge state to complete the charge and discharge test.

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