Battery charging management system and its control method and control device

Abstract

This invention discloses a battery charging management system and its control method and device, relating to battery maintenance technology. The control device of this application controls the connection between the charging device and the SOC testing device or the charging device and the power supply by controlling a first switch and a second switch, thereby enabling charging or SOC testing of the batteries placed in the charging units. Furthermore, the control device can also disconnect or connect the charging units individually, allowing the user to control one or more charging units as needed to charge or test the batteries in the corresponding units. Each charging unit of the battery charging management system of this application integrates charging and SOC testing functions, making it convenient and simple for users to replace batteries and facilitating the charging management of multiple batteries.

Description

Technical Field

[0001] This invention relates to the field of battery maintenance technology, and in particular to a battery charging management system and its control method and control device. Background Technology

[0002] Currently, the batteries used in automotive teaching and training labs require individual SOC testing and assessment before being charged in turn via chargers in the charging room or charging area. This results in very low charging efficiency, cumbersome battery charging process, and significant management difficulties.

[0003] Automotive teaching and training labs typically have multiple electrically powered vehicles for teaching purposes, and correspondingly, a spare battery inventory is maintained for the number of vehicles. Therefore, a charging area is set up in the lab, equipped with one or more chargers to charge the batteries that need charging. However, the batteries used for teaching in the lab are frequently used by different students, and they are often placed haphazardly on the floor, making unified management difficult. Furthermore, when a vehicle needs a battery replacement, the batteries in the charging area must be moved to the SOC testing equipment to test their usability, resulting in a cumbersome and disorganized battery charging and usage process. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a battery charging management system and its control method and device, which can conveniently manage the charging and SOC testing of multiple batteries.

[0005] On one hand, embodiments of the present invention provide a battery charging management system, including a charging device, a control device, a SOC testing device, a first switch, and a second switch;

[0006] The charging device includes a plurality of charging units, and the positive terminals of the plurality of charging units form a positive bus connected to the first terminal of the first switch and the SOC testing device. The second terminal of the first switch is used to connect to the positive terminal of the power supply.

[0007] A negative bus formed by the negative terminals of several charging units is connected to the first terminal of the second switch, the second terminal of the second switch is used to connect to the negative terminal of the power supply, and the third terminal of the second switch is connected to the SOC testing device.

[0008] The control device is connected to several of the charging units, the first switch, and the second switch, respectively, and the control device is used for:

[0009] Obtain control commands;

[0010] The operating mode and target charging unit are determined according to the control commands;

[0011] When the working mode is charging mode, the first switch is controlled to connect the positive terminal of the power supply and the positive bus, the second switch is controlled to connect the negative terminal of the power supply and the negative bus, and the target charging unit is controlled to be enabled.

[0012] When the operating mode is SOC test mode, the first switch is controlled to disconnect the positive terminal of the power supply and the positive bus, the second switch is controlled to connect the SOC test device and the negative bus, and the target charging unit is controlled to be enabled.

[0013] According to some embodiments of the present invention, the control device includes a touch screen and a processing module, wherein the touch screen is connected to the processing module.

[0014] According to some embodiments of the present invention, the charging unit includes a MOSFET switch and a charging interface, the charging interface is connected to the output terminal of the MOSFET switch, the input terminal of the MOSFET switch is connected to the processing module, and the power supply terminal of the MOSFET switch is connected to the first terminal of the first switch.

[0015] According to some embodiments of the present invention, the charging device further includes a charging parameter measurement module, wherein the negative terminal of the charging unit is connected to the first terminal of the second switch through the charging parameter measurement module, the positive terminal of the charging unit is connected to the charging parameter measurement module, and the charging parameter measurement module is also connected to the control device;

[0016] The control device is also used for:

[0017] Obtain the charging parameters of the target charging unit during operation;

[0018] The charging state of the target charging unit is determined based on the charging parameters.

[0019] The MOSFET switch in the target charging unit is turned on or off according to the charging state.

[0020] According to some embodiments of the present invention, the SOC testing device includes a discharge rod and an SOC testing voltage sampling module;

[0021] One end of the discharge rod is connected to the positive bus, and the other end of the discharge rod is connected to the third terminal of the second switch;

[0022] The processing module is connected to both ends of the discharge rod via the SOC test voltage sampling module;

[0023] The control device is also used for:

[0024] When the battery charging management system is in the SOC test mode, the discharge voltage value output by the SOC test voltage sampling module is acquired.

[0025] The battery test results in the target charging unit are determined based on the discharge voltage value.

[0026] According to some embodiments of the present invention, the SOC testing device further includes a display module, which is connected to the processing module;

[0027] The control device is also used for:

[0028] When the discharge voltage value is less than a first preset value, the display module is controlled to display the test results used to characterize an unusable battery.

[0029] When the discharge voltage value is greater than or equal to the first preset value and less than or equal to the second preset value, the display module is controlled to display the test results of the battery that needs to be charged for use.

[0030] When the discharge voltage value is greater than the second preset value, the display module is controlled to display the test results of the battery that can be used without charging.

[0031] According to some embodiments of the present invention, the control device is further configured to:

[0032] Determine the first moment when the battery charging management system enters the SOC test mode;

[0033] The second time is obtained by starting the timer from the first time point;

[0034] When the difference between the second time and the first time is greater than a preset time period, the MOSFET switch of the target charging unit is turned off.

[0035] According to some embodiments of the present invention, the battery charging management system further includes a cabinet, the cabinet being provided with a plurality of charging areas, each charging area being provided with a corresponding charging unit, the SOC testing device and the processing module being embedded in the cabinet, and the touch screen being disposed on the surface of the cabinet.

[0036] On the other hand, embodiments of the present invention also provide a control method for a battery charging management system, applied to the control device of the battery charging management system as described above, the control method for the battery charging management system comprising the following steps:

[0037] Obtain control commands;

[0038] The operating mode and target charging unit are determined according to the control commands;

[0039] When the working mode is charging mode, the first switch is controlled to connect the positive terminal of the power supply and the positive bus, the second switch is controlled to connect the negative terminal of the power supply and the negative bus, and the target charging unit is controlled to be enabled.

[0040] When the operating mode is SOC test mode, the first switch is controlled to disconnect the positive terminal of the power supply and the positive bus, the second switch is controlled to connect the SOC test device and the negative bus, and the target charging unit is controlled to be enabled.

[0041] On the other hand, embodiments of the present invention also provide a control device for a battery charging management system, applied to the battery charging management system as described above, the control device comprising:

[0042] At least one processor;

[0043] At least one memory for storing at least one program;

[0044] When the at least one program is executed by the at least one processor, the at least one processor implements the control method of the battery charging management system as described above.

[0045] The technical solution described above by this invention has at least one of the following advantages or beneficial effects: The control device of this application controls the connection between the charging device and the SOC testing device or the connection between the charging device and the power supply by controlling the first switch and the second switch, thereby realizing the charging or SOC testing of the battery placed in the charging unit. Furthermore, the control device can also disconnect or connect the charging units individually, allowing the user to control one or more charging units as needed to charge or test the battery in the corresponding charging unit. Each charging unit of the battery charging management system of this application integrates charging and SOC testing functions, making it convenient and simple for users to replace batteries and facilitating the charging management of multiple batteries. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the internal circuit of the battery charging management system provided in an embodiment of the present invention;

[0047] Figure 2 This is a schematic diagram of the external structure of the battery charging management system provided in an embodiment of the present invention;

[0048] Figure 3 This is a flowchart of the control method for the battery charging management system provided in an embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the control device for the battery charging management system provided in an embodiment of the present invention. Detailed Implementation

[0050] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar originals or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0051] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not 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 limiting this invention.

[0052] In the description of this invention, the use of terms such as "first," "second," etc., is merely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0053] This invention provides a battery charging management system, referring to... Figure 1 The battery charging management system of this invention includes a charging device, a control device 300, a SOC testing device 100, a first switch 410, and a second switch 420.

[0054] The charging device includes several charging units 210. A positive bus formed by the positive terminals of the charging units is connected to a first terminal of a first switch and a SOC testing device. The second terminal of the first switch is used to connect to the positive terminal of a power supply. A negative bus formed by the negative terminals of the charging units is connected to a first terminal of a second switch. The second terminal of the second switch is used to connect to the negative terminal of a power supply. The third terminal of the second switch is connected to the SOC testing device. A control device is connected to the charging units, the first switch, and the second switch. The control device is used for:

[0055] Obtain control commands;

[0056] The operating mode and target charging unit are determined according to control commands;

[0057] When the working mode is charging mode, the first switch is controlled to connect the positive terminal of the power supply and the positive bus, the second switch is controlled to connect the negative terminal of the power supply and the negative bus, and the target charging unit is controlled to be enabled.

[0058] When the working mode is SOC test mode, the first control switch is disconnected from the positive power supply and the positive bus, the second control switch is connected to the SOC test device and the negative bus, and the target charging unit is enabled.

[0059] In some embodiments, the enabled state is characterized by the switching component in the target charging unit being turned on, enabling the target charging to be powered on, thereby providing charging charge to the battery 600.

[0060] In some embodiments, the control device may include a touch screen 329 and a processing module 310, with the touch screen connected to the processing module. For example... Figure 1 As shown, the processing module can use an Arduino control board, and the RX and TX pins of the Arduino control board are connected to the touch screen accordingly.

[0061] In some embodiments, both the first switch and the second switch are double-pole relays, such as... Figure 1 As shown, the double-pole relay includes a relay switch and a relay coil. The relay coil of the first switch can be connected to the 5V power supply pin and A0 pin of the Arduino control board, and the relay coil of the second switch can be connected to the 5V power supply pin and A1 pin of the Arduino control board. The first terminal of the first switch is connected to a positive bus formed by the positive terminals of several charging units, the second terminal is connected to the positive power supply, and the third terminal is left floating. The first terminal of the second switch is connected to a negative bus formed by the negative terminals of several charging units, the second terminal is connected to the negative power supply, and the third terminal is connected to the SOC testing device. When the battery charging management system is in charging mode, the processing module controls the relay switch of the first switch to connect the first terminal and the second terminal through the relay coil of the first switch, and controls the relay switch of the second switch to connect the first terminal and the second terminal through the relay coil of the second switch, thereby forming a circuit between the charging device and the power supply, enabling the charging unit to charge the battery. When the battery charging management system is in SOC test mode, the processing module controls the relay switch of the first switch to connect the first terminal and the third terminal through the relay coil of the first switch, and controls the relay switch of the second switch to connect the first terminal and the third terminal through the relay coil of the second switch. This forms a circuit between the SOC test device and the charging device, which can test the battery status in the charging unit. At the same time, the charging device is disconnected from the power supply, which can prevent the power supply from affecting the SOC test.

[0062] In this embodiment, each charging unit of the battery charging management system integrates charging and SOC testing functions. Users only need to input control commands via the touchscreen to charge the battery in the target charging unit and perform SOC testing to check its usability. This makes battery replacement convenient and simple, and also facilitates the management of charging multiple batteries. For example, when a user inputs a charging mode on the touchscreen and selects the fourth and fifth charging units as target charging units, the control device controls the relay switch states of the first and second switches according to the control commands, enabling the fourth and fifth charging units and disabling other unselected charging units, thereby charging the batteries in the fourth and fifth charging units. Similarly, when a user inputs an SOC testing mode on the touchscreen and selects the third charging unit as the target, the control device controls the relay switch states of the first and second switches according to the control commands, enabling the third charging unit and disabling other charging units, thereby testing the charge state of the battery in the third charging unit.

[0063] According to some embodiments of the present invention, with reference to Figure 1 Each charging unit includes a MOSFET switch 211 and a charging interface 212. The charging interface is connected to the output terminal of the MOSFET switch, the input terminal of the MOSFET switch is connected to the processing module, and the power supply terminal of the MOSFET switch is connected to the first terminal of the first switch.

[0064] In some embodiments, the MOSFET switch incorporates a field-effect transistor. The processing module controls the conduction or cutoff of the field-effect transistor by providing a bias voltage to the input terminal of the MOSFET switch. When the field-effect transistor is on, the positive bus is connected, and the output terminal of the MOSFET switch is connected to the battery through a charging interface, thereby connecting the battery to the positive bus. Figure 1 As shown, five MOSFET switches are connected to five I / O ports of the Arduino control board. The Arduino control board controls the voltage of the I / O ports to control the corresponding charging unit to be in an enabled or disabled state. In the enabled state, the MOSFET switch's field-effect transistor is in the on state, and in the disabled state, the MOSFET switch's field-effect transistor is in the off state.

[0065] According to some embodiments of the present invention, with reference to Figure 1 The charging device also includes a charging parameter measurement module 220. The negative terminal of the charging unit is connected to the first terminal of the second switch through the charging parameter measurement module. The positive terminal of the charging unit is connected to the charging parameter measurement module. The charging parameter measurement module is also connected to the control device.

[0066] The control device is also used for:

[0067] Obtain the charging parameters of the target charging unit during operation;

[0068] The charging status of the target charging unit is determined based on the charging parameters;

[0069] The MOSFET switch in the target charging unit is turned on or off according to the charging status.

[0070] In this embodiment, the control device acquires charging parameters such as current and voltage of all target charging units during the charging process through the charging parameter measurement module, and determines the charging state of the target charging unit based on the charging parameters, such as dangerous state of excessive current, fully charged state, or normal charging state. In the charging state of dangerous state of excessive current or fully charged state, the MOSFET switch in the corresponding target charging unit is controlled to be turned off, and in the normal charging state, the MOSFET switch in the corresponding target charging unit is controlled to be turned on.

[0071] In other implementations, the charging parameter measuring device can be connected to the control device via a touchscreen. The charging parameter measuring device determines the charging status of the target charging unit based on the charging parameters and feeds back the charging status value to the control device. The control device then controls the MOSFET switch in the target charging unit to turn on or off based on the charging status. Simultaneously, the touchscreen displays the charging parameters and charging status of the target charging unit.

[0072] According to some embodiments of the present invention, with reference to Figure 1 The SOC testing device includes a discharge rod 110 and an SOC test voltage sampling module 120.

[0073] One end of the discharge rod is connected to the positive bus, and the other end is connected to the third terminal of the second switch. The processing module is connected to both ends of the discharge rod via the SOC test voltage sampling module.

[0074] The control device is also used for:

[0075] When the battery charging management system is in the SOC test mode, the discharge voltage value output by the SOC test voltage sampling module is obtained.

[0076] The battery test results in the target charging unit are determined based on the discharge voltage value.

[0077] For example, when the user selects the SOC test mode and the third charging unit as the target charging unit, the control device controls the relay switch of the first switch to connect the first and third terminals, the relay switch of the second switch to connect the first and third terminals, the MOSFET switch in the third charging unit to be in the ON state, and the MOSFET switches in other charging units to be in the OFF state. The discharge rod discharges the battery in the third charging unit, and the SOC test voltage sampling module collects the voltage value during the discharge process and performs analog-to-digital conversion to obtain a discrete discharge voltage value. The control device determines the battery test result in the target charging unit based on the discharge voltage value. The battery test result includes, but is not limited to, the battery being unusable, the battery needing to be charged before use, and the battery being usable without charging.

[0078] In some embodiments, refer to Figure 1 The SOC testing device also includes a voltmeter 140, which is connected to both ends of the discharge rod to display the voltage at both ends of the discharge rod.

[0079] According to some embodiments of the present invention, the SOC testing apparatus further includes a display module, which is connected to the processing module.

[0080] The control device is also used for:

[0081] When the discharge voltage value is less than the first preset value, the control display module displays the test results to indicate that the battery is unusable.

[0082] When the discharge voltage value is greater than or equal to the first preset value and less than or equal to the second preset value, the control display module displays the test results of the battery that needs to be charged before use.

[0083] When the discharge voltage value is greater than the second preset value, the control display module displays the test results of the battery, which indicates that it can be used without charging.

[0084] For example, the display module can be as follows: Figure 1The indicator light unit 130 shown includes red, green, and yellow lights. When the discharge voltage is less than 9V, the red light is on, indicating that the battery is unusable; when the discharge voltage is between 9V and 11V, the yellow light is on, indicating that it can be used after charging; when the discharge voltage is greater than 11V, the green light is on, indicating that it can be used without charging or is fully charged. This embodiment of the invention provides the user with battery test results by determining the range of the discharge voltage value, indicating whether the user can use the battery in the target charging unit. In current automotive teaching and training labs, after the battery undergoes SOC testing, it is difficult to ensure that every student knows which range of discharge voltage is unusable and which is usable. This could lead to students using batteries that are damaged or have low charge, further damaging the battery or the vehicle. Therefore, this application provides students with battery test results through a display module to guide their battery use, standardizing battery usage and improving battery lifespan.

[0085] In some other embodiments, the display module can also be a touch screen, and the processing module can directly send the battery test results to the touch screen for display in text form.

[0086] According to some embodiments of the present invention, the control device is further configured to:

[0087] Determine the first moment when the battery charging management system enters SOC test mode;

[0088] The second time is obtained by starting the timer from the first time point;

[0089] When the difference between the second time and the first time is greater than a preset time period, the MOSFET switch of the target charging unit is turned off.

[0090] In this embodiment, when students use the SOC testing device alone to test the battery, improper operation can easily lead to over-discharge of the tested battery, resulting in insufficient battery power or even damage. This embodiment of the invention limits the SOC testing time of the battery in the target charging unit to a certain time, such as within 5 seconds, by setting a preset time period. This prevents the battery from discharging for too long and affecting its usability.

[0091] According to some specific embodiments of the present invention, referring to Figure 1 The battery charging management system also includes a fuse 500, which is located between the positive terminal of the power supply and the second terminal of the first switch. During charging, if the current in the charging device and the power supply circuit becomes too high, the fuse automatically melts and disconnects the charging device from the power supply to protect the battery charging management system. The battery charging management system of this embodiment can use a 12V to 24V power supply.

[0092] According to some embodiments of the present invention, with reference to Figure 2 The battery charging management system also includes a cabinet 900, which has several charging areas. Each charging area has a corresponding charging unit. The charging interface 212 of the charging unit is external and used to connect to the battery 600. The SOC testing device and processing module are embedded in the cabinet, and the touch screen 320 is set on the surface of the cabinet.

[0093] In other embodiments, reference is made to Figure 2 The cabinet also has a cavity for storing the power supply 700, and casters 800 are installed at the bottom of the cabinet. The integrated design of the battery charging management system allows the battery charging management system to be conveniently placed in a suitable location to manage multiple batteries in the training room.

[0094] On the other hand, embodiments of the present invention also provide a control method for a battery charging management system, applied to the control device of the battery charging management system as described in the preceding embodiments, referring to... Figure 3 The control method of the battery charging management system includes the following steps:

[0095] S310, acquire control commands;

[0096] S320 determines the operating mode and target charging unit based on control commands;

[0097] S330, when the working mode is charging mode, controls the first switch to connect the positive terminal of the power supply and the positive bus, controls the second switch to connect the negative terminal of the power supply and the negative bus, and controls the target charging unit to be enabled.

[0098] S340, when the working mode is SOC test mode, controls the first switch to disconnect the positive power supply and the positive bus, controls the second switch to connect the SOC test device and the negative bus, and controls the target charging unit to be enabled.

[0099] Reference Figure 4 , Figure 4 This is a schematic diagram of a control device for a battery charging management system according to an embodiment of the present invention. The control device for the battery charging management system of this embodiment includes one or more control processors and a memory. Figure 4 The example consists of a control processor and a memory.

[0100] The control processor and memory can be connected via a bus or other means. Figure 4 Taking the example of a connection between China and Israel via a bus.

[0101] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the control processor, and these remote memories can be connected to the control device of the battery charging management system via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0102] Those skilled in the art will understand that Figure 4 The device structure shown does not constitute a limitation on the control device of the battery charging management system, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0103] The non-transient software program and instructions required to implement the control method of the battery charging management system applied to the control device of the battery charging management system in the above embodiments are stored in the memory. When the controlled processor executes, the control method of the battery charging management system applied to the control device of the battery charging management system in the above embodiments is executed.

[0104] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A battery charging management system, characterized in that, It includes a charging device, a control device, a SOC testing device, a first switch, and a second switch; the SOC testing device includes a discharge rod and an SOC testing voltage sampling module. The charging device includes a plurality of charging units, and the positive terminals of the plurality of charging units form a positive bus connected to the first terminal of the first switch and the SOC testing device. The second terminal of the first switch is used to connect to the positive terminal of the power supply. A negative bus formed by the negative terminals of several charging units is connected to the first terminal of the second switch, the second terminal of the second switch is used to connect to the negative terminal of the power supply, and the third terminal of the second switch is connected to the SOC testing device; one end of the discharge rod is connected to the positive bus, and the other end of the discharge rod is connected to the third terminal of the second switch; the processing module of the control device is connected to both ends of the discharge rod through the SOC test voltage sampling module. The control device is connected to several of the charging units, the first switch, and the second switch, respectively, and the control device is used for: Obtain control commands input by the user; The operating mode and target charging unit are determined according to the control commands; When the working mode is charging mode, the first switch is controlled to connect the positive terminal of the power supply and the positive bus, the second switch is controlled to connect the negative terminal of the power supply and the negative bus, and the target charging unit is controlled to be enabled. When the working mode is SOC test mode, the first switch is controlled to disconnect the positive terminal of the power supply from the positive bus, the second switch is controlled to connect the SOC test device to the negative bus, and the target charging unit is controlled to be enabled. The discharge rod is used to discharge the battery of the target charging unit, and the SOC test voltage sampling module is used to collect the voltage value during the discharge process and perform analog-to-digital conversion on the voltage value to obtain a discrete discharge voltage value. The control device is also used to: acquire the discharge voltage value output by the SOC test voltage sampling module when the battery charging management system is in the SOC test mode. The battery test results in the target charging unit are determined and displayed based on the discharge voltage value; the battery test results are used to characterize whether the battery is unusable, needs to be charged before use, or can be used without charging.

2. The battery charging management system according to claim 1, characterized in that, The control device includes a touch screen and a processing module, with the touch screen connected to the processing module.

3. The battery charging management system according to claim 2, characterized in that, The charging unit includes a MOSFET switch and a charging interface. The charging interface is connected to the output terminal of the MOSFET switch, the input terminal of the MOSFET switch is connected to the processing module, and the power supply terminal of the MOSFET switch is connected to the first terminal of the first switch.

4. The battery charging management system according to claim 3, characterized in that, The charging device further includes a charging parameter measurement module. The negative terminal of the charging unit is connected to the first terminal of the second switch through the charging parameter measurement module. The positive terminal of the charging unit is connected to the charging parameter measurement module. The charging parameter measurement module is also connected to the control device. The control device is also used for: Obtain the charging parameters of the target charging unit during operation; The charging state of the target charging unit is determined based on the charging parameters. The MOSFET switch in the target charging unit is turned on or off according to the charging state.

5. The battery charging management system according to claim 4, characterized in that, The SOC testing device also includes a display module, which is connected to the processing module. The control device is also used for: When the discharge voltage value is less than a first preset value, the display module is controlled to display the test results used to characterize an unusable battery. When the discharge voltage value is greater than or equal to the first preset value and less than or equal to the second preset value, the display module is controlled to display the test results of the battery that needs to be charged for use. When the discharge voltage value is greater than the second preset value, the display module is controlled to display the test results of the battery that can be used without charging.

6. The battery charging management system according to claim 5, characterized in that, The control device is also used for: Determine the first moment when the battery charging management system enters the SOC test mode; The second time is obtained by starting the timer from the first time point; When the difference between the second time and the first time is greater than a preset time period, the MOSFET switch of the target charging unit is turned off.

7. The battery charging management system according to claim 6, characterized in that, The battery charging management system also includes a cabinet, which has several charging areas, each of which has a corresponding charging unit. The SOC testing device and the processing module are both embedded in the cabinet, and the touch screen is located on the surface of the cabinet.

8. A control method for a battery charging management system, characterized in that, The control device applied to the battery charging management system as described in claim 1, wherein the control method of the battery charging management system includes the following steps: Obtain control commands input by the user; The operating mode and target charging unit are determined according to the control commands; When the working mode is charging mode, the first switch is controlled to connect the positive terminal of the power supply and the positive bus, the second switch is controlled to connect the negative terminal of the power supply and the negative bus, and the target charging unit is controlled to be enabled. When the operating mode is SOC test mode, the first switch is controlled to disconnect the positive terminal of the power supply from the positive bus, the second switch is controlled to connect the SOC test device to the negative bus, and the target charging unit is controlled to be enabled; the discharge voltage value output by the SOC test voltage sampling module is acquired; the battery test result in the target charging unit is determined and displayed based on the discharge voltage value; the battery test result is used to characterize whether the battery is unusable, needs to be charged before use, or can be used without charging.

9. A control device for a battery charging management system, characterized in that, The control device, applied to the battery charging management system as described in claim 1, comprises: At least one processor; At least one memory for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the control method of the battery charging management system as described in claim 8.

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