A battery, an electric device, a battery testing system, and a battery testing method

Abstract

The application provides a battery, a power consumption device, a battery testing system and a battery testing method. The battery comprises a battery module and a wireless management module; the wireless management module is configured to provide a communication function between the battery module and an external device; that is, the wireless management module receives instruction data sent by the external device, and sends instruction parameters corresponding to the instruction data to the battery module; and receives battery parameters sent by the battery module, and sends battery data corresponding to the battery parameters to the external device. The embodiment of the application provides a battery with a wireless communication function, so that the battery can send battery data to the external device in a wireless communication mode, and the convenience of battery parameter transmission is improved.

Description

Technical Field

[0001] This application relates to the field of batteries, and more specifically, to a battery, an electrical device, a battery testing system, and a battery testing method. Background Technology

[0002] There are currently various types of batteries on the market, including chemical batteries, physical batteries, and biological batteries. Chemical batteries include nickel-cadmium batteries, nickel-metal hydride batteries, lead-acid batteries, and lithium-ion batteries. Lithium-ion batteries are currently one of the most widely used types of batteries.

[0003] Taking lithium-ion batteries as an example, the current method for obtaining battery-related parameters is to connect the lithium-ion battery with a wiring harness. This method is complex to operate and has low efficiency in obtaining battery-related parameters. Summary of the Invention

[0004] The purpose of this application is to provide a battery, an electrical device, a battery testing system, and a battery testing method, so as to provide a battery that facilitates the acquisition of battery-related parameters.

[0005] In a first aspect, embodiments of this application provide a battery, which includes a battery module and a wireless management module; the wireless management module is used to provide communication between the battery module and an external device; that is, the wireless management module receives instruction data sent by the external device and sends instruction parameters corresponding to the instruction data to the battery module; and receives battery parameters sent by the battery module and sends battery data corresponding to the battery parameters to the external device.

[0006] This application provides a battery with wireless communication capabilities, enabling the battery to transmit battery data to external devices wirelessly, thereby improving the convenience of battery parameter transmission.

[0007] In any embodiment, the battery module includes a battery cell and a BMS system; wherein the BMS system is connected to both the battery cell and the wireless management module; the BMS system is used to collect battery parameters of the battery cell and send battery data corresponding to the battery parameters to the wireless management module.

[0008] In this embodiment, the BMS system is connected to the wireless management module, which enables the wireless management module to transmit the battery parameters of the individual battery cells monitored by the BMS system to external devices via wireless communication, thereby improving the convenience of data transmission.

[0009] In any embodiment, the wireless management module is used to convert the signal type of the command data into a signal type compatible with the BMS system, and send the converted command parameters to the BMS system.

[0010] In this embodiment, since the signal type of the instruction data received by the wireless management module from the external device is a wireless signal, in order to facilitate the BMS system to recognize the instruction data, the wireless management module converts the wireless signal into a signal type that the BMS system can recognize.

[0011] In any embodiment, the wireless management module is also connected to the power supply to adjust the sampling voltage of the power supply and to wake up the BMS system using the adjusted sampling voltage.

[0012] In this embodiment, the wireless management module can wake up the BMS system by connecting to the power supply, thereby preparing for sending battery parameters to external devices.

[0013] In any embodiment, the power supply is a battery module; the wireless management module is connected to the low-voltage interface of the battery module through a first wiring harness, wherein the low-voltage interface refers to an interface whose output voltage is lower than a preset voltage.

[0014] In this embodiment, the wireless management module is connected to the low-voltage interface of the battery module via a first wiring harness to enable power supply to the battery.

[0015] In any embodiment, the wireless management module is connected to the high-voltage circuit of the battery via a second wiring harness.

[0016] In this embodiment, the wireless management module is connected to the high-voltage circuit of the battery via a second wiring harness, thereby enabling the high-voltage circuit of the battery to supply power to the low-voltage circuit of the battery.

[0017] In any embodiment, the battery is used to communicate with the test terminal and to begin testing of the wireless test item before, after arriving at, or after leaving the test station.

[0018] The embodiments of this application improve the flexibility of testing by using a wireless testing method, reduce the number of test items that need to be tested via wired connection at the test station, and shorten the testing time at the test station.

[0019] In any embodiment, the wireless test items include at least one of BMS master control test, BMS slave control test, minimum voltage test, maximum voltage test, minimum temperature test, maximum temperature test, SOC detection, interlock signal fault detection, slow charging function test, and fast charging function test.

[0020] This application embodiment utilizes a wireless management module to enable data interaction between the battery under test and the test terminal for the aforementioned test items that can be completed wirelessly, thereby completing wireless testing. This reduces the number of test items that require wired testing at the test station and improves testing efficiency.

[0021] Secondly, embodiments of this application provide an electrical device that includes the battery described in the first aspect. The battery is used to provide electrical energy and to transmit battery data corresponding to battery parameters to an external device via wireless communication.

[0022] Thirdly, embodiments of this application provide a battery testing system, including a testing terminal and the battery provided in the first aspect; the battery is wirelessly connected to the testing terminal via a wireless management module.

[0023] The battery receives test commands from the test terminal via the wireless management module, obtains the corresponding battery parameters according to the test commands, and sends the test data corresponding to the battery parameters to the test terminal via the wireless management module.

[0024] In this embodiment, the battery is wirelessly connected to the test terminal via a wireless management module, enabling wireless testing of the battery under test. This reduces the number of wired tests at the test station, shortens the test cycle at the test station, and improves test efficiency.

[0025] Fourthly, embodiments of this application provide a battery testing method. The battery includes a wireless management module. The method includes: receiving a test command sent by a test terminal through the wireless management module, and obtaining corresponding battery parameters according to the test command; and returning test data corresponding to the battery parameters to the test terminal through the wireless management module, so as to realize wireless testing of the battery.

[0026] This application embodiment achieves battery testing through wireless communication, thereby enabling test items that can be tested wirelessly to be tested before arriving at the test station, or after leaving the test station, or to be tested in parallel with wired tests at the test station. This reduces the number of test items at the test station, thereby shortening the testing cycle at the test station and improving testing efficiency.

[0027] In any embodiment, the test terminal monitors the battery's location information. If the location information indicates that the battery has reached a preset work station, it sends a test command to the wireless management module.

[0028] This application embodiment monitors the battery's location via a test terminal and begins wireless testing upon reaching a preset workstation. This allows some test items to be tested wirelessly, eliminating the need to occupy testing time at the test workstation and improving testing efficiency.

[0029] In any embodiment, before the wireless management module receives the test command sent by the test terminal, the method further includes: receiving a connection request sent by the test terminal; establishing a wireless communication connection with the test terminal through the wireless management module according to the connection request, and waking up the BMS system.

[0030] In this embodiment, a wireless communication connection is established between the wireless management module and the test terminal, providing a communication foundation for subsequent wireless testing.

[0031] In any embodiment, the test instruction includes at least one of the following: BMS master control test instruction, BMS slave control test instruction, minimum voltage test instruction, maximum voltage test instruction, minimum temperature test instruction, maximum temperature test instruction, SOC detection instruction, interlock signal fault detection instruction, slow charging function detection instruction, and fast charging function detection instruction.

[0032] This application embodiment utilizes a wireless management module to enable data interaction between the battery under test and the test terminal for the aforementioned test items that can be completed wirelessly, thereby completing wireless testing. This reduces the number of test items that require wired testing at the test station and improves testing efficiency.

[0033] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing embodiments of this application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of a battery structure provided in an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of another battery structure provided in an embodiment of this application;

[0037] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0038] Figure 4 This application provides a structural diagram of a battery connected to a power supply according to an embodiment of the present application.

[0039] Figure 5 This application provides another structural diagram showing the connection between a battery, a power supply, and an external device.

[0040] Figure 6This application provides another structural diagram illustrating the connection between a battery, a power supply, and an external device.

[0041] Figure 7 A schematic diagram of a semi-finished product test provided in an embodiment of this application;

[0042] Figure 8 A schematic diagram of pre-shipment inspection of finished goods inventory provided in this application embodiment;

[0043] Figure 9 This is a schematic diagram of a battery testing system provided in an embodiment of this application;

[0044] Figure 10 This is a schematic diagram of a battery testing method provided in an embodiment of this application;

[0045] Figure 11 This is a schematic diagram of another battery testing method provided in an embodiment of this application;

[0046] Figure 12 This is a schematic diagram of the display interface of the test terminal provided in an embodiment of this application. Detailed Implementation

[0047] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0049] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0050] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0052] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0053] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0054] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0055] Currently, batteries are widely used as a new energy source in various fields, such as energy storage power systems for hydropower, thermal power and solar power plants, and can also be used in electric vehicles, such as electric bicycles, electric motorcycles and electric cars.

[0056] The production process of power batteries includes a testing step. Once the power battery reaches the corresponding testing station, it undergoes pre-production testing to ensure that the quality of the batteries meets requirements. Currently, an EOL (end-of-line) comprehensive testing system is used for off-line testing of power batteries. This system integrates multiple functions such as battery charge / discharge testing, battery safety testing, battery parameter testing, BMS (Battery Management System) testing, and auxiliary function testing. Through equipment integration, it employs barcode binding, automatic test initiation, and automatic result judgment to achieve full automation and intelligence of the entire workflow, thereby reducing operator workload and improving testing efficiency.

[0057] The inventors noted that due to the large number of pre-production tests, the testing cycle time for each power battery at the testing station is long, resulting in low testing efficiency. To meet the cycle time requirements of the entire production line, a sufficient number of testing stations need to be reserved during production line construction.

[0058] To address the aforementioned problem of low battery testing efficiency, the inventors of this application have discovered that some test items can be tested wirelessly. That is, the test can be performed by wireless communication between the battery under test and the test terminal, eliminating the need for the battery under test to be electrically connected to the test probe at the test station before the test begins.

[0059] Based on the above considerations, this application provides a battery including a battery module and a wireless management module. The wireless management module enables the battery to have wireless communication capabilities, allowing it to wirelessly connect with external devices and wirelessly transmit battery data corresponding to battery parameters to the external devices. Therefore, the convenience of battery parameter transmission can be improved.

[0060] The battery provided in this application embodiment can be a power battery or an energy storage battery. When used as a power battery, it can be used in electrical devices such as vehicles, ships, or aircraft, but is not limited to that used in such devices. Furthermore, the battery provided in this application embodiment can be used to wirelessly transmit battery parameters before it leaves the production line, before it leaves the warehouse, or when it is installed in an electrical device; for example, it can enable wireless testing of the battery.

[0061] Figure 1 A schematic diagram of a battery structure provided in this application embodiment, such as... Figure 1As shown, the battery includes a battery module 101 and a wireless management module 102. The wireless management module 102 provides communication functionality between the battery module 101 and external devices. Specifically, the wireless management module 102 receives instruction data sent by the external device and sends the corresponding instruction parameters to the battery module 101. Furthermore, the wireless management module 102 can also receive battery parameters sent by the battery module 101 and send the corresponding battery data to the external device.

[0062] In specific implementation, battery module 101 can be understood as the battery body, which is used to provide electrical energy and generate battery parameters. The battery parameters are those possessed by the battery body, such as minimum voltage, minimum and maximum voltage, minimum temperature, maximum temperature, and SOC (State of charge) value, etc. This application embodiment does not specifically limit these parameters.

[0063] The battery internally includes a wireless management module 102 and a battery module 101 connected together. The wireless management module 102 and battery module 101 can be electrically connected via a wiring harness, or they can be electrically connected through physical contact. For example, the wireless management module 102 has a protruding interface, and the battery module 101 has a recessed interface adapted to the protruding interface. The wireless management module 102 can be inserted into the recessed interface of the battery module 101 through the protruding interface to achieve the connection between the wireless management module 102 and the battery module 101. It is understood that the wireless management module 102 can also have a recessed interface, and the battery module 101 can have a protruding interface adapted to the recessed interface.

[0064] The wireless management module 102 can establish a communication connection with an external device, which can be an electronic device used to test the battery or an electronic device used to record battery parameters. This electronic device can be a terminal device or a server; specifically, the terminal device can be a smartphone, tablet, computer, personal digital assistant (PDA), etc.; the server can be an application server or a web server. After establishing a communication connection with the external device, the wireless management module 102 can receive instruction data sent by the external device and send the corresponding instruction parameters to the battery module. These instruction parameters can be used to obtain one or more battery parameters from the battery module 101. For example, if the instruction data includes 20 bytes of data, the wireless management module 102 will parse the received 20 bytes of data to obtain an ID and 8 bytes of data. This ID and 8 bytes of data constitute the instruction parameters, which are then sent to the battery module 101. It is understood that the above is only an example, and the specific content of the instruction data sent by the external device to the wireless management module 102 can be determined according to the actual situation. In some embodiments, the wireless management module 102 may only convert the signal type of the instruction data without modifying its content. In this case, it can be understood that the instruction data received by the wireless management module 102 from the external device is the same as the instruction parameters sent to the battery module 101. After receiving the instruction parameters sent by the wireless management module 102, the battery module 101 obtains the corresponding battery parameters according to the instruction data and sends the battery data corresponding to the battery parameters to the wireless management module 102, which then transmits it wirelessly to the external device. For example, the battery parameters include an ID and 8 bytes of parameters. The wireless management module 102 converts the received ID into new bytes and combines it with the received 8 bytes of data to form new 20 bytes of battery data, which is then sent to the external device. It is understood that the above is only an example, and the specific content of the battery parameters sent by the battery module 101 to the wireless management module 102 can be determined according to the actual situation. In some embodiments, the wireless management module 102 may only convert the signal type of the battery parameters without modifying their content. In this case, it can be understood that the battery parameters received by the wireless management module 102 from the battery module 101 are the same as the battery data sent to the external device.

[0065] Understandably, after the wireless management module 102 establishes a wireless communication connection with the external device, the battery module 101 can spontaneously send battery parameters to the wireless management module 102, and the wireless management module 102 will then send the battery data corresponding to the battery parameters to the external device. The battery parameters can be product information corresponding to the battery, such as the battery barcode, software version, etc.

[0066] This application provides a battery with wireless communication capabilities, enabling the battery to transmit battery parameters to external devices wirelessly, thereby improving the convenience of battery parameter transmission.

[0067] Based on the above embodiments, the battery module includes a battery cell and a battery management system (BMS); wherein, the BMS system is connected to both the battery cell and the wireless management module; the BMS system is used to collect battery parameters of the battery cell and send battery data corresponding to the battery parameters to the wireless management module.

[0068] Figure 2 Another battery structure diagram provided in this application embodiment, such as Figure 2 As shown. The battery module includes a battery cell 201 and a battery management system (BMS) 202. The wireless management module is connected to the BMS system 202. Figure 2 The diagram shows the wireless management module 102 connected to the BMS system 202 via a five-wire cable. Wire A is used to wake up the BMS system 202, wires B and C form a CAN bus for data exchange, and wires D and E supply power to the BMS system 202. It is understood that... Figure 2 The five wires included are just an example. In practical applications, the wireless management module and the BMS system can be connected by more or fewer wires. This application does not specifically limit this.

[0069] A battery module may include multiple battery cells 201, which are connected in series, parallel, or mixed connections. A mixed connection means that some of the battery cells 201 are connected in series and others in parallel. The battery cells 201 can be directly connected in series, parallel, or mixed connections; alternatively, the battery may consist of multiple battery cells 201 first connected in series, parallel, or mixed connections to form a battery module, and then these battery modules are connected in series, parallel, or mixed connections to form a whole. The battery may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells.

[0070] Each battery cell 201 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 201 can be cylindrical, flat, cuboid, or other shapes.

[0071] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. A battery cell refers to the smallest unit that makes up a battery. Figure 3 The battery pack includes an end cap 21, a housing 22, a cell assembly 23, and other functional components.

[0072] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with cell assembly 23 to output or input electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0073] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the cell assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the cell assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0074] The cell assembly 23 is the component in the battery cell 100 where the electrochemical reaction occurs. The casing 22 may contain one or more cell assemblies 23. The cell assembly 23 is mainly formed by winding or stacking positive and negative electrode plates, and typically a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the cell assembly, while the portions of the positive and negative electrode plates without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals to form a current loop.

[0075] The BMS system 202 includes components such as current sensors, pre-charge resistors, and fuses. It connects to each individual battery cell 201 to detect the battery parameters of each cell in the battery pack to determine the overall battery status. Based on the status of each cell, it performs corresponding control adjustments and implements strategies to manage the charging and discharging of each cell, ensuring safe and stable battery operation. The BMS system 202 is also connected to a wireless management module 102, which transmits the collected battery parameters to the wireless management module 102, which then sends the corresponding battery data to external devices.

[0076] In this embodiment, the BMS system is connected to the wireless management module, which enables the wireless management module to transmit the battery parameters of the individual battery cells monitored by the BMS system to external devices via wireless communication, thereby improving the convenience of data transmission.

[0077] Based on the above embodiments, the wireless management module is used to convert the signal type of the instruction data into a signal type compatible with the BMS system, and send the converted instruction parameters to the BMS system.

[0078] In practical implementation, the wireless management module is used to convert wireless signals into data of a signal type that the BMS system can recognize. The wireless signal can be a Wi-Fi signal, 4G network signal, 5G network signal, or Bluetooth signal, etc. The signal type that the BMS system can recognize is serial port data. Therefore, after receiving command data of a wireless signal type from an external device, the wireless management module converts the command data into serial port data and sends the converted command parameters to the BMS system.

[0079] Similarly, after the BMS system collects the battery parameters, it sends the battery parameters, which are serial data, to the wireless management module. The wireless management module converts the signal type of the battery parameters into a wireless signal and sends the converted battery data to the external device.

[0080] In another embodiment, after the BMS system collects the battery parameters, it sends the battery parameters, which are serial data, to the wireless management module. The battery data corresponding to the battery parameters is then sent to the external device. Since the external device also contains a wireless management module, after receiving the battery parameters, which are serial data, the wireless management module converts the signal type of the battery parameters into a wireless signal so that the external device can recognize them.

[0081] In this embodiment, since the signal type of the instruction data received by the wireless management module from the external device is a wireless signal, in order to facilitate the BMS system to recognize the instruction data, the wireless management module converts the wireless information into a signal type that the BMS system can recognize.

[0082] Based on the above embodiments, the wireless management module is also connected to the power supply to adjust the sampling voltage of the power supply and to wake up the BMS system using the adjusted sampling voltage.

[0083] In the specific implementation process Figure 4 This application provides a structural diagram of a battery and power supply connection, as shown in the embodiment. Figure 4 As shown. External devices include a wireless communication module and a host computer. The power interface of the wireless management module 102 is connected to the power supply 401. Since the sampling voltage output by the power supply 401 may not meet the requirements of the BMS system—it may be higher than the voltage the BMS system can withstand, lower than the voltage required by the BMS system, or the voltage may be unstable—the wireless management module 102 can adjust the sampling voltage output by the power supply 401 to output a more stable sampling voltage to the BMS system 202. The stable sampling voltage can be used to wake up the BMS system 202 or to power the BMS system 202.

[0084] In this embodiment, the wireless management module can wake up the BMS system by connecting to the power supply, thereby preparing for the subsequent transmission of battery data to external devices.

[0085] Based on the above embodiments, the power supply mentioned in the above embodiments can be a battery module; the wireless management module is connected to the low-voltage interface of the battery module through the first wiring harness; it can be understood that the low-voltage interface refers to an interface with an output voltage lower than a preset voltage.

[0086] In the specific implementation process Figure 5 Another structural diagram showing the connection between the battery, power supply, and external device provided in this application embodiment is shown below. Figure 5As shown. External devices include a wireless communication module and a host computer. The power supply can be a battery module, which can be the battery module constituting the battery described in this embodiment. The battery module includes a low-voltage interface for outputting a voltage lower than a preset voltage. The preset voltage can be 20V, 24V, etc. The wireless management module is connected to the low-voltage interface of the battery module through a first wiring harness, thereby enabling the battery module to power itself. It is understood that the low-voltage interface can include a positive interface and a negative interface, and the first wiring harness can include a first positive wire and a first negative wire. The wireless management module is connected to the battery module by connecting the first positive wire to the positive interface and the first negative wire to the negative interface.

[0087] In this embodiment, the wireless management module is connected to the low-voltage interface of the battery module via a first wiring harness to enable power supply to the battery.

[0088] Based on the above embodiments, the wireless management module can be connected to the high-voltage circuit of the battery via a second wiring harness.

[0089] Figure 6 Another structural diagram illustrating the connection between a battery, a power supply, and an external device, provided in this application embodiment, is shown below. Figure 6 As shown in the figure, the main circuit of the relay in the battery provided in this embodiment includes a pre-charge resistor R and five relays. The five relays are K1, K2, K3, K4, and K5. The pre-charge resistor R and relay K1 are connected in series and then in parallel with relay K2. The pre-charge resistor R protects relays K2 and K3. Relays K1 and K2 are located on the main positive circuit, which is led out from the positive terminal of the battery and connected to the positive terminal of the vehicle motor. Relay K3 is located on the main negative circuit, which is led out from the negative terminal of the battery and connected to the negative terminal of the vehicle motor. Relay K4 is located on the charging positive circuit, which is also led out from the positive terminal of the battery and connected to the positive terminal of the charging pile. Relay K5 is located on the charging negative circuit, which is led out from the negative terminal of the battery and connected to the negative terminal of the charging pile. The wireless management module is connected to the main positive and main negative circuits via a second wiring harness, wakes up the BMS system through the high-voltage circuit of the battery, and supplies power to the wireless management module.

[0090] In this embodiment, the wireless management module is connected to the high-voltage circuit of the battery via a second wiring harness, thereby enabling the high-voltage circuit of the battery to supply power to the low-voltage circuit of the battery.

[0091] Based on the above embodiments, the battery is used to communicate with the test terminal and to start the wireless test item test before arriving at the test station, or after arriving at the test station, or after leaving the test station.

[0092] In the specific implementation process, a testing station is set up on the battery production line. This testing station is used to test the relevant performance of the batteries about to come off the production line to determine whether the batteries meet the preset requirements. The method of testing the batteries is as follows: after the batteries arrive at the testing station, they are connected to the batteries through probes on the testing station, thereby establishing a connection with the batteries. At this time, each test item can be tested according to the pre-configured test procedure. However, since there are many tests before the batteries come off the production line, the testing time for each battery at the testing station is relatively long. In order to test the batteries from the previous process in a timely manner, the current practice is to add testing stations, which increases the testing cost. If the testing work is not increased, the overall testing efficiency is low. To solve this technical problem, the inventors of this application divide the pre-production testing of batteries into wired testing and wireless testing. Wired testing refers to the testing completed by connecting the batteries to the testing station through probes, while wireless testing refers to the testing completed by communicating with the batteries through an external testing terminal via wireless communication. Therefore, based on the batteries provided in the above embodiments, this application proposes a wireless testing method for the batteries with wireless communication capabilities. Since wireless testing is unaffected by the battery's location, it can be completed before the battery reaches the testing station. For example, wireless testing can begin when the battery arrives at the top cover installation station and be completed before reaching the airtightness testing station. Alternatively, it can be conducted concurrently with wired testing while the battery is at the testing station. Or, testing can begin after the battery has completed wired testing at the testing station and left the station; for example, wireless testing can start after the battery leaves the testing station and be completed before reaching the hoisting station.

[0093] It should be noted that the batteries provided in this application embodiment are applicable not only to pre-production testing, but also to pre-shipment testing and after-sales testing, etc. This application embodiment does not specifically limit these applications.

[0094] Figure 7 A schematic diagram of a semi-finished product test provided in an embodiment of this application, such as... Figure 7As shown, four production lines, PL1-PL4, are set up in a workshop. A testing terminal is installed in the workshop, comprising a host computer and a wireless communication module, with testing software running on the host computer. It is understood that two or more testing terminals can be set up in the workshop; this application embodiment does not specifically limit the number of testing terminals. For ease of understanding, this application uses one testing terminal as an example for the following description. The testing terminal can be regarded as a wireless testing base station, communicating with multiple wireless management modules on multiple production lines. This allows for simultaneous wireless testing of multiple batteries, and the wireless tests between multiple batteries do not interfere with each other. The application scenario of this application embodiment is to complete the wireless test during the process from battery cover installation to airtightness testing, referred to as EOL testing. The specific method flow is as follows:

[0095] Step 1: After connecting the wireless management module to the power supply, the wireless management module starts working. The wireless management module receives the connection request from the wireless test base station and establishes a wireless communication connection between the wireless test base station and the battery.

[0096] Step 2: After establishing a wireless communication connection, the wireless management module wakes up the BMS system in reverse phase. The BMS system then begins to send product information, such as the battery barcode, to the wireless test base station.

[0097] Step 3: After receiving the product information, the wireless test base station verifies the product information to determine whether the battery corresponding to the product information is the battery that needs to be tested wirelessly.

[0098] Step 4: If the wireless test base station determines that the battery needs to be tested wirelessly, it sends a test command to the battery.

[0099] Step 5: The battery receives the test command through the wireless management module and sends the test data corresponding to the test command to the wireless test base station through the wireless management module.

[0100] Step 6: The wireless test base station evaluates the test data to generate the test results corresponding to the test instructions. Steps 5 and 6 are executed repeatedly until all wireless test items are completed.

[0101] Step 7: After completing the wireless test, the wireless test base station uploads the test result to the MES system based on the product barcode and sends a disconnect command to the battery to disconnect the communication connection between the wireless test base station and the battery.

[0102] Figure 8 This application provides a schematic diagram of pre-shipment inspection of finished goods in inventory, as shown in the embodiments of this application. Figure 8As shown, when finished products are shipped from inventory, various performance parameters of the finished batteries need to be tested. A testing terminal is set up in the warehouse. This testing terminal includes a host computer and a wireless communication module, and testing software runs on the host computer. It is understood that two or more testing terminals can also be set up in the warehouse; this application embodiment does not specifically limit the number of testing terminals. For ease of understanding, this application uses one testing terminal as an example for the following description. The testing terminal can be regarded as a wireless testing base station, which communicates with the wireless management modules of multiple batteries respectively. Thus, multiple batteries can be wirelessly tested simultaneously, and the wireless tests between multiple batteries do not interfere with each other. It should be noted that the testing before the finished products are shipped from inventory is similar to the method of semi-finished product testing described above, and will not be repeated here.

[0103] The embodiments of this application improve the flexibility of testing by using a wireless testing method, reduce the number of test items that need to be tested via wired connection at the test station, and shorten the testing time at the test station.

[0104] Based on the above embodiments, the wireless test items include at least one of BMS master control test, BMS slave control test, minimum voltage test, maximum voltage test, minimum temperature test, maximum temperature test, SOC detection, interlock signal fault detection, slow charging function test, and fast charging function test.

[0105] In the specific implementation process, the BMS master control test command is used to detect whether the power supply function or communication function of the BMS master control in the battery under test is normal, and to obtain the software version of the BMS master control in the battery under test, so as to determine whether the software version is the same as the standard version in the test terminal.

[0106] BMS slave control test commands are used to detect the power supply function, communication function, and whether the slave control wiring is normal in the battery under test.

[0107] The minimum voltage test command is used to collect the minimum voltage of the battery under test in order to detect whether the minimum voltage is within the preset minimum voltage range.

[0108] The maximum voltage test command is used to collect the maximum voltage of the battery under test in order to detect whether the maximum voltage is within the preset maximum voltage range.

[0109] The minimum temperature test command is used to collect the minimum temperature of the battery under test in order to detect whether the minimum temperature is within the preset minimum temperature range.

[0110] The maximum temperature test command is used to collect the maximum temperature of the battery under test in order to detect whether the maximum temperature is within the preset maximum temperature range.

[0111] The SOC detection command is used to collect the SOC value of the battery under test in order to detect whether the SOC value is within the preset SOC range.

[0112] The interlock signal fault detection command controls the on / off state of the interlock signal line and sends the corresponding BMS status to the test terminal through the wireless management module to detect whether the interlock signal is faulty.

[0113] The slow charging function detection command uses external enable signals CC and CP to detect whether the slow charging function is normal.

[0114] The fast charging function detection command uses an external enable signal CC2 to detect whether the fast charging function is normal.

[0115] This application embodiment utilizes a wireless management module to enable data interaction between the battery under test and the test terminal for the aforementioned test items that can be completed wirelessly, thereby completing wireless testing. This reduces the number of test items that require wired testing at the test station and improves testing efficiency.

[0116] This application provides an electrical device that includes the battery described in the above embodiments. The battery serves two purposes: firstly, it supplies power to the device; secondly, it can establish wireless communication with external devices via a wireless management module and transmit battery data corresponding to battery parameters to the external devices wirelessly.

[0117] It is understood that the functions of the battery and the battery data sent to external devices can be found in the above embodiments, and will not be repeated here. This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0118] This application embodiment uses a battery with wireless communication capabilities to conveniently obtain the battery parameters of the battery installed in the electrical device.

[0119] Figure 9 This is a schematic diagram of a battery testing system provided in an embodiment of this application, as shown below. Figure 9The system includes a test terminal 901 and a battery 902 provided in the above embodiments. The battery 902 is wirelessly connected to the test terminal 901 via a wireless management module. The battery 902 receives test commands from the test terminal 901 via the wireless management module, obtains the corresponding battery parameters according to the test commands, and sends the test data corresponding to the battery parameters back to the test terminal 901 via the wireless management module.

[0120] In practical implementation, the test terminal can be a terminal with wireless communication capabilities, such as a smartphone, tablet, computer, or personal digital assistant (PDA). Therefore, the test terminal 901 also includes a wireless communication function unit. Of course, the test terminal 901 can also be a terminal without wireless communication capabilities, such as a host computer without wireless communication capabilities. For the test terminal 901 without wireless communication capabilities, it can achieve communication connection with the wireless management module in the battery 902 through an external wireless communication unit. Test software can be pre-installed in the test terminal 901, and this software can be pre-configured with test cases for each test item for wireless testing of the battery 902. It can be understood that the test cases for each test item can be independent or a complete set of test cases combined according to a certain test sequence.

[0121] After battery 902 establishes a communication connection with test terminal 901 via the wireless management module, test terminal 901 can send test commands to battery 902 according to a pre-set test sequence through running test software. These test commands can be at least one of the following: BMS master control test command, BMS slave control test command, minimum voltage test command, maximum voltage test command, minimum temperature test command, maximum temperature test command, SOC detection command, interlock signal fault detection command, slow charging function detection command, and fast charging function detection command. Based on the received test commands, battery 902 obtains the corresponding battery parameters and returns the corresponding test data to the test terminal. Test terminal 901 has pre-set standard indicators for each test command. After receiving the test data, test terminal 901 compares it with the standard indicators to determine whether battery 902 has passed the test item corresponding to the test command and generates the test result.

[0122] In addition, the test terminal 901 can also communicate with the manufacturing execution system (MES) and upload the test results to the MES system.

[0123] In this embodiment, the battery is wirelessly connected to the test terminal via a wireless management module, enabling wireless testing of the battery under test. This reduces the number of wired tests at the test station, shortens the test cycle at the test station, and improves test efficiency.

[0124] Figure 10 This is a schematic diagram of a battery testing method provided in an embodiment of this application, such as... Figure 10 As shown, this method can be applied to test the battery described in the above embodiments, which includes a wireless management module. The method includes:

[0125] Step 1001: The battery receives the test command sent by the test terminal through the wireless management module, and obtains the corresponding battery parameters according to the test command;

[0126] Step 1002: The battery returns the test data corresponding to the battery parameters to the test terminal through the wireless management module, so as to realize the wireless testing of the battery.

[0127] In step 1001, the relevant description of the wireless management module can be found in the above embodiments, and will not be repeated here. After the wireless management module establishes a wireless communication connection with the test terminal, the methods for wireless data transmission include, but are not limited to, WIFI, 5G, Bluetooth, ZigBee, Near Field Communication (NFC), and Ultra Wide Band (UWB).

[0128] The battery can receive test commands sent by the test terminal via the wireless management module. These test commands are used to test the battery and can be generated based on pre-configured test cases in the test terminal. It is understandable that different battery models may have different test items, resulting in different test cases and consequently, different test commands.

[0129] After receiving a test command, the wireless management module in the battery parses the command to obtain the corresponding command parameters, and then sends these parameters to the BMS system. The BMS system then retrieves the corresponding battery parameters based on these parameters. For example, if the test command is to obtain the battery's maximum temperature, the BMS system will package the maximum temperature information into battery parameters. It is understood that the process of the wireless management module converting the test command into command parameters is consistent with the process of converting command data into command parameters in the above embodiment, and will not be elaborated further here.

[0130] In step 1002, the BMS system sends the battery parameters to the wireless management module, which then returns the corresponding test data to the test terminal. The test terminal uses the test data to determine whether the test items corresponding to the battery meet the requirements, thereby enabling wireless testing of the battery. Similarly, in this embodiment, the process by which the wireless management module converts the battery parameters into test pool data is the same as the process in the above embodiments, and will not be repeated here.

[0131] It is understandable that, prior to step 1001, there may also be a process of the test terminal verifying the battery. That is, after the battery establishes a wireless communication connection with the test terminal, the battery can send verification information to the test terminal through the wireless management module. This verification information includes the battery's barcode. It is understood that each battery has a globally unique barcode, and the test terminal can determine whether the battery with which it is communicating is the battery that needs to be tested based on the barcode.

[0132] This application embodiment achieves battery testing through wireless communication, thereby enabling test items that can be tested wirelessly to be tested before arriving at the test station, or after leaving the test station, or to be tested in parallel with wired tests at the test station. This reduces the number of test items at the test station, thereby shortening the testing cycle at the test station and improving testing efficiency.

[0133] Based on the above embodiments, the test terminal monitors the battery's location information. If the location information indicates that the battery has reached a preset workstation, the test command is sent to the wireless management module.

[0134] The test terminal is communicatively connected to the battery transport device. The transport device stores its identification and the barcode of the transported battery. The transport device has a positioning function, which can send its location to the test terminal, allowing the test terminal to monitor the battery's location. When the test terminal detects that the battery has arrived at the preset station, it can send a test command to the wireless communication module to begin wireless testing.

[0135] This application embodiment monitors the location of the battery under test through a test terminal, and starts wireless testing after it reaches a preset workstation. This allows some test items to be tested wirelessly without occupying the testing time at the test workstation, thus improving testing efficiency.

[0136] Figure 11 This is a schematic diagram of another battery testing method provided in an embodiment of this application, as shown below. Figure 11 As shown, the method includes:

[0137] Step 1101: Receive the connection request sent by the test terminal;

[0138] Step 1102: The wireless management module establishes a wireless communication connection with the test terminal based on the connection request and wakes up the BMS system;

[0139] Step 1103: The battery receives the test command sent by the test terminal through the wireless management module, and obtains the corresponding battery parameters according to the test command;

[0140] Step 1104: The battery returns the test data corresponding to the battery parameters to the test terminal through the wireless management module to realize wireless testing of the battery.

[0141] In step 1101, before performing wireless testing on the battery, it is necessary to establish a connection between the test terminal and the battery. Therefore, the test terminal sends a connection request to the battery.

[0142] In step 1102, after receiving the connection request, the battery establishes a wireless communication connection with the test terminal through the wireless management module. After establishing the wireless communication connection, the wireless management module sends a voltage signal to the BMS system to wake up the BMS system.

[0143] It should be noted that steps 1103 and 1104 correspond to steps 1001 and 1002 in the above embodiments, respectively, and will not be described again here.

[0144] In this embodiment, a wireless communication connection is established between the wireless management module and the test terminal, providing a communication foundation for subsequent wireless testing.

[0145] Based on the above embodiments, the test instructions include at least one of the following: BMS system master control test instructions, BMS slave control test instructions, minimum voltage test instructions, maximum voltage test instructions, minimum temperature test instructions, maximum temperature test instructions, SOC detection instructions, interlock signal fault detection instructions, slow charging function detection instructions, and fast charging function detection instructions.

[0146] It should be noted that each of the above test instructions corresponds to the test items in the above embodiments. Therefore, the function of each test instruction can be found in the explanation of the test items in the above embodiments, and will not be repeated here.

[0147] This application embodiment utilizes a wireless management module to enable data interaction between the battery under test and the test terminal for the aforementioned test items that can be completed wirelessly, thereby completing wireless testing. This reduces the number of test items that require wired testing at the test station and improves testing efficiency.

[0148] This application provides a wireless testing method for batteries, which specifically includes:

[0149] After the battery under test completes all low-voltage connections, the wireless management unit is in working condition and continuously sends data out.

[0150] Once the base station software running on the test terminal is started, it automatically creates a test server until the software is closed.

[0151] After the test terminal connects to the battery under test, a test thread is created. Once the wireless management module of the battery under test detects the creation of the test thread, it wakes up the BMS system in reverse (through a 12V power supply) and begins to execute the wireless test.

[0152] After the test terminal connects to the battery under test, the battery under test actively sends the AGV number to the test terminal. The test terminal then retrieves the barcode of the battery under test from the AGV database based on the AGV number. It should be noted that during the finished product warehouse test, since the battery is not placed on the AGV at this time, the battery barcode is not bound to the AGV. The base station only needs to send a command to read the barcode of the battery under test to the wireless management module, and then the wireless management module acts as a bridge to transmit the command to the BMS system, thereby obtaining the barcode of the battery under test.

[0153] The testing terminal extracts the PN code (part number) of the battery from the barcode of the battery under test.

[0154] The test terminal retrieves the corresponding test formula from the test formula library built into the wireless test software based on the PN code of the battery under test (the test formulas in the test formula library are bound to the product PN, and the test formulas are different for different product PNs).

[0155] The testing terminal selects a test formula from the test formula library based on the PN code of the battery under test and tests the battery under test.

[0156] If the corresponding test formula is not found in the test formula library, the test terminal should display an error message.

[0157] Test threads do not interfere with each other, and exceptions in one test thread cannot affect other test threads;

[0158] After the test is completed, the test thread sends a test completion command to the battery under test. After a certain delay, the test terminal actively disconnects from the battery under test.

[0159] Figure 12This is a schematic diagram of the display interface of the test terminal provided in this application embodiment. The base station display is divided into grids; each grid corresponds to a test thread. When a grid is clicked, a test progress window pops up; the test progress window displays the complete test formula and test progress results. Different test states can be filled with different colors to facilitate user viewing. For example: NG (test failed) grids are displayed in red; OK (test passed) grids are displayed in green; test in progress: grids are displayed in yellow; no formula: grids are displayed in blue; grids that test NG will disconnect from the battery under test after receiving a reset command from the battery under test.

[0160] It should be noted that, Figure 12 The grid shown is just an example. The number of grids displayed in the display interface and the content displayed in each grid can be pre-configured according to the actual situation. This application embodiment does not make specific limitations on this.

[0161] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0162] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0163] Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0164] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0165] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A battery, characterized in that, include: Battery module and wireless management module; The wireless management module is used to provide communication between the battery module and external devices; The wireless management module receives instruction data sent by the external device and sends instruction parameters to the battery module; it also receives battery parameters sent by the battery module and sends battery data to the external device. The battery module includes individual battery cells and a battery management system (BMS). The wireless management module is also connected to the power supply to adjust the sampling voltage of the power supply and to use the adjusted sampling voltage to wake up the BMS system.

2. The battery according to claim 1, characterized in that, The BMS system is connected to the battery cell and the wireless management module respectively; The BMS system is used to collect the battery parameters of the individual battery cells and send the battery data corresponding to the battery parameters to the wireless management module.

3. The battery according to claim 2, characterized in that, The wireless management module is used to convert the signal type of the instruction data into a signal type that is compatible with the BMS system, and send the converted instruction parameters to the BMS system.

4. The battery according to claim 1, characterized in that, The power supply is a battery module; the wireless management module is connected to the low-voltage interface of the battery module through a first wiring harness; wherein, the low-voltage interface refers to an interface whose output voltage is lower than a preset voltage.

5. The battery according to claim 3, characterized in that, The wireless management module is connected to the high-voltage circuit of the battery via a second wiring harness.

6. The battery according to any one of claims 1-5, characterized in that, The battery is used to communicate with the test terminal and to start the wireless test item test before arriving at the test station, or after arriving at the test station, or after leaving the test station.

7. The battery according to claim 6, characterized in that, The wireless test items include at least one of the following: BMS master control test, BMS slave control test, minimum voltage test, maximum voltage test, minimum temperature test, maximum temperature test, SOC detection, interlock signal fault detection, slow charging function test, and fast charging function test.

8. An electrical device, characterized in that, Includes the battery as described in any one of claims 1-7, wherein the battery is used to provide electrical energy and to transmit battery data corresponding to battery parameters to an external device via wireless communication.

9. A battery testing system, characterized in that, Includes a test terminal and a battery as described in any one of claims 1-7; The battery is wirelessly connected to the test terminal via a wireless management module. The battery receives test commands sent by the test terminal through the wireless management module, obtains the corresponding battery parameters according to the test commands, and sends the test data corresponding to the battery parameters to the test terminal through the wireless management module.

10. A battery testing method, characterized in that, The battery includes a wireless management module, and the method includes: The wireless management module receives test commands sent by the test terminal and obtains the corresponding battery parameters based on the test commands. The wireless management module returns test data corresponding to the battery parameters to the test terminal to achieve wireless testing of the battery. Before the wireless management module receives the test command sent by the test terminal, the method further includes: Receive the connection request sent by the test terminal; The wireless management module establishes a wireless communication connection with the test terminal based on the connection request, and then wakes up the BMS system in reverse.

11. The method according to claim 10, characterized in that, The test terminal monitors the location information of the battery. If the location information indicates that the battery has reached a preset work position, the test command is sent to the wireless management module.

12. The method according to any one of claims 10-11, characterized in that, The test commands include at least one of the following: BMS system master control test command, BMS slave control test command, minimum voltage test command, maximum voltage test command, minimum temperature test command, maximum temperature test command, SOC detection command, interlock signal fault detection command, slow charging function detection command, and fast charging function detection command.

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