A battery capacity dividing device

Abstract

The present application relates to a battery capacity division device. In the present application, by arranging a test circuit board in a press, the length of the signal transmission line connecting the test circuit board and the probes of the probe module in the press can be effectively reduced, thereby effectively reducing the occupied space of the device, effectively reducing energy loss, and thus effectively reducing economic costs; in addition, since a probe module is separately provided with a positive probe and a negative probe, when testing a battery to be tested, only one probe module needs to be fixed in the press, which is simpler and more convenient to operate, and when a probe fails, only a single probe module needs to be replaced, and there is no need to replace the entire positive module or the negative module, which can effectively reduce the replacement cost of the module.

Description

Technical Field

[0001] The present application belongs to the technical field of battery capacity division, and in particular, relates to a battery capacity division device. Background Art

[0002] When the battery is divided into different capacities, a battery capacity division device is required to charge and discharge each battery cell, and collect the voltage across the battery and the current flowing through the battery during the charging and discharging process to analyze the capacity and internal resistance of the battery cells, determine the quality level of the battery cells for grouping, and select batteries with the same electrical parameters to facilitate the subsequent series and parallel application of the batteries.

[0003] At present, the existing battery capacity division device generally includes a press, a positive electrode module, a negative electrode module and a test box. The battery to be tested is placed in the press, and a plurality of positive electrode probes are fixedly arranged under the shell of the positive electrode module, and a plurality of negative electrode probes are fixedly arranged under the shell of the negative electrode module. A plurality of test circuit boards are arranged in the test box, and the test box is installed in the power cabinet. The positive electrode probe of the positive electrode module and the negative electrode probe of the negative electrode module are electrically connected to the test circuit board in the test box through the current signal transmission line and the voltage signal transmission line. When testing, the positive electrode module and the negative electrode module are first installed in the press, so that the top of the positive electrode module and the negative electrode module are close to the press. The top inner wall of the press is fixedly connected, and then the battery to be tested in the press is controlled to rise, so that the positive and negative poles of the battery to be tested in the press are respectively in contact with the positive probe and the negative probe above, and the test circuit board is used to power and control the charging and discharging of the battery to be tested, as well as the processing and analysis of the data collected by the probes. However, since the power supply cabinet and the press are respectively arranged in different rooms, the length of the signal transmission line connecting the test circuit board in the test chassis in the power supply cabinet and the probe of the module in the press is relatively long, and the cable needs to pass through the wall, and a wire groove and an inspection channel need to be set, resulting in a large space occupation and energy loss of the device, which in turn leads to high economic costs. Utility Model Content

[0004] The purpose of the present application is to provide a battery capacity division device; the battery capacity division device provided by the present application can effectively reduce the length of the signal transmission line connecting the test circuit board and the probe of the probe module, thereby effectively reducing the occupied space of the device, effectively reducing energy loss, and thus effectively reducing economic costs.

[0005] The technical solutions provided by this application are as follows:

[0006] A battery capacity dividing device comprises: a press machine, a probe module and a test circuit board;

[0007] The probe module is arranged in the press, and the probe module comprises a shell structure, a positive electrode probe and a negative electrode probe, and the positive electrode probe and the negative electrode probe are fixedly arranged below the shell structure;

[0008] The first end of the positive electrode probe is used to contact the positive electrode of the battery to be tested in the press, and the first end of the negative electrode probe is used to contact the negative electrode of the battery to be tested in the press;

[0009] The test circuit board is arranged in the housing structure, and the second end of the positive electrode probe and the second end of the negative electrode probe are electrically connected to the test circuit board through a current signal transmission line and a voltage signal transmission line, respectively.

[0010] Optionally, the probe module further includes: a temperature probe;

[0011] The temperature probe is fixedly arranged below the housing structure;

[0012] The first end of the temperature probe is used to contact the battery to be tested;

[0013] The second end of the temperature probe is electrically connected to the test circuit board through a temperature signal transmission line.

[0014] Optionally, the test circuit board is provided with a temperature signal interface, a current signal interface and a voltage signal interface;

[0015] The second end of the temperature probe is electrically connected to the temperature signal interface on the test circuit board through the temperature signal transmission line;

[0016] The second end of the positive probe and the second end of the negative probe are electrically connected to the current signal interface on the test circuit board through the current signal transmission line respectively;

[0017] The second end of the positive probe and the second end of the negative probe are electrically connected to the voltage signal interface on the test circuit board through the voltage signal transmission line, respectively.

[0018] Optionally, the probe module is provided in plurality, and the test circuit board is provided in plurality;

[0019] The first end of the temperature probe of each of the probe modules is used to contact the corresponding battery to be tested;

[0020] The second end of the temperature probe of each of the probe modules is electrically connected to the temperature signal interface on the corresponding test circuit board;

[0021] The first end of the positive electrode probe of each of the probe modules is used to contact the positive electrode of the corresponding battery to be tested in the press, and the first end of the negative electrode probe of each of the probe modules is used to contact the negative electrode of the corresponding battery to be tested in the press;

[0022] The second end of the positive probe and the second end of the negative probe of each probe module are electrically connected to the current signal interface on the corresponding test circuit board respectively;

[0023] The second end of the positive probe and the second end of the negative probe of each of the probe modules are electrically connected to the voltage signal interface on the corresponding test circuit board respectively.

[0024] Optionally, the test circuit board is provided with a first electrical connector, a second electrical connector and a third electrical connector, the current signal interface includes a first current signal interface and a second current signal interface, and the voltage signal interface includes a first voltage signal interface and a second voltage signal interface;

[0025] The first current signal interface is arranged on the first electrical connector;

[0026] The second current signal interface is arranged on the second electrical connector;

[0027] The temperature signal interface, the first voltage signal interface and the second voltage signal interface are arranged on the third electrical connector;

[0028] The second end of the positive electrode probe is electrically connected to the first current signal interface through the current signal transmission line;

[0029] The second end of the cathode probe is electrically connected to the second current signal interface through the current signal transmission line;

[0030] The second end of the positive electrode probe is electrically connected to the first voltage signal interface through the voltage signal transmission line;

[0031] The second end of the cathode probe is electrically connected to the second voltage signal interface through the voltage signal transmission line.

[0032] Optionally, a bracket is provided in the press, and a plurality of through holes are provided at the bottom of the bracket;

[0033] The housing structure of the plurality of probe modules is arranged in the bracket, and the first ends of the positive electrode probes and the first ends of the negative electrode probes of the plurality of probe modules pass through the through holes at the bottom of the bracket;

[0034] The bracket is slidably connected to the press.

[0035] Optionally, the bracket is a drawer structure, and a handle is fixedly provided on the outer side of the bracket.

[0036] Optionally, a heat dissipation fan is fixedly provided on one side of the test circuit board;

[0037] The heat dissipation fan is electrically connected to the test circuit board.

[0038] Optionally, a tray is provided in the press;

[0039] The tray is used for placing each of the batteries to be tested.

[0040] Compared with the prior art, the battery capacity division device provided in the present application comprises: a press, a probe module and a test circuit board; the probe module is arranged in the press, the probe module comprises a shell structure, a positive pole probe and a negative pole probe, the positive pole probe and the negative pole probe are fixedly arranged under the shell structure; the first end of the positive pole probe is used to contact the positive pole of the battery to be tested in the press, and the first end of the negative pole probe is used to contact the negative pole of the battery to be tested in the press; the test circuit board is arranged in the shell structure, the second end of the positive pole probe and the second end of the negative pole probe are electrically connected to the test circuit board through the current signal transmission line and the voltage signal transmission line respectively, in the present application, by The board is arranged in the shell structure of the probe module, which can effectively reduce the length of the signal transmission line connecting the test circuit board and the probe of the probe module, thereby effectively reducing the occupied space of the device, effectively reducing energy loss, and thus effectively reducing economic costs; in addition, since a probe module is separately provided with a positive probe and a negative probe, when testing a battery to be tested, only one probe module needs to be arranged in the press, which is simpler and more convenient to operate, and when a probe fails, only a single probe module needs to be replaced, and there is no need to replace the entire positive module or the negative module, which can effectively reduce the replacement cost of the module. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic diagram of the structure of a battery capacity division device disclosed in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of the structure of a probe module and a test circuit board disclosed in an embodiment of the present application;

[0044] Figure 3 A schematic diagram of the structure of another test circuit board disclosed in an embodiment of the present application;

[0045] Figure 4 A schematic diagram of the structure of another battery capacity division device disclosed in an embodiment of the present application;

[0046] Reference numerals: 100 - press machine; 200 - probe module; 300 - test circuit board; 400 - battery to be tested;

[0047] 210 - shell structure; 220 - positive electrode probe; 230 - negative electrode probe; 240 - current signal transmission line; 250 - voltage signal transmission line; 260 - temperature probe; 270 - temperature signal transmission line;

[0048] 310-temperature signal interface; 320-current signal interface; 330-voltage signal interface; 340-first electrical connector; 350-second electrical connector; 360-third electrical connector; 370-cooling fan; 321-first current signal interface; 322-second current signal interface; 331-first voltage signal interface; 332-second voltage signal interface;

[0049] 110- bracket; 111- handle; 120- tray. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0052] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0054] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0055] like Figure 1 As shown, an embodiment of the present application provides a battery capacity division device, including: a press 100, a probe module 200 and a test circuit board 300; the probe module 200 is arranged in the press 100, and the probe module 200 includes a shell structure 210, a positive probe 220 and a negative probe 230, and the positive probe 220 and the negative probe 230 are fixedly arranged below the shell structure 210; the first end of the positive probe 220 is used to contact the positive electrode of the battery to be tested in the press 100, and the first end of the negative probe 230 is used to contact the negative electrode of the battery to be tested in the press 100; the test circuit board 300 is arranged in the shell structure 210, and the second end of the positive probe 220 and the second end of the negative probe 230 are electrically connected to the test circuit board 300 through the current signal transmission line 240 and the voltage signal transmission line 250 respectively.

[0056] In this embodiment, the test circuit board 300 can be fixedly arranged in the shell structure 210. When a battery to be tested needs to be tested, the battery to be tested is placed in the press 100, and the battery to be tested in the press 100 is controlled to rise, so that the positive electrode of the battery to be tested contacts the first end of the positive electrode probe 220 above, and the negative electrode of the battery to be tested contacts the first end of the negative electrode probe 230 above. The test circuit board 300 is used to supply power, control the charging and discharging of the battery to be tested, and process and analyze the data collected by the probe to obtain the battery capacity division test result. The host computer connected to the test circuit board 300 can send test control instructions to the test circuit board 300, and receive and display the capacity division test result sent by the test circuit board 300.

[0057] Compared with the prior art, the battery capacity division device provided by the present application includes: a press 100, a probe module 200 and a test circuit board 300; the probe module 200 is arranged in the press 100, and the probe module 200 includes a shell structure 210, a positive probe 220 and a negative probe 230, and the positive probe 220 and the negative probe 230 are fixedly arranged below the shell structure 210; the first end of the positive probe 220 is used to contact the positive electrode of the battery to be tested in the press 100, and the first end of the negative probe 230 is used to contact the negative electrode of the battery to be tested in the press 100; the test circuit board 300 is arranged in the shell structure 210, and the second end of the positive probe 220 and the second end of the negative probe 230 are respectively connected to the test circuit board through the current signal transmission line 240 and the voltage signal transmission line 250 300 is electrically connected. In the present application, by setting the test circuit board 300 in the shell structure 210 of the probe module 200, the length of the signal transmission line connecting the test circuit board 300 and the probe of the probe module 200 can be effectively reduced, thereby effectively reducing the occupied space of the device, effectively reducing energy loss, and thus effectively reducing economic costs; in addition, since a probe module 200 is separately provided with a positive probe 220 and a negative probe 230, when testing a battery to be tested, only one probe module 200 needs to be set in the press 100, which is simpler and more convenient to operate, and when the probe fails, only a single probe module 200 needs to be replaced, and there is no need to replace the entire positive module or the negative module, which can effectively reduce the replacement cost of the module.

[0058] like Figure 2 As shown, as an implementation mode, in the embodiment of the present application, the probe module 200 also includes: a temperature probe 260; the temperature probe 260 is fixedly arranged below the shell structure 210; the first end of the temperature probe 260 is used to contact the battery to be tested; the second end of the temperature probe 260 is electrically connected to the test circuit board 300 through the temperature signal transmission line 270.

[0059] In this embodiment, a temperature sensitive device can be set in the temperature probe 260. The temperature sensitive device can be a thermistor or a thermocouple, or other temperature sensors. The temperature sensitive device is electrically connected to the test circuit board 300 through the temperature signal transmission line 270. The temperature probe 260 collects the temperature of the battery under test during the charging and discharging process in real time.

[0060] like Figures 1 to 3As shown, as an implementation mode, in the embodiment of the present application, a temperature signal interface 310, a current signal interface 320 and a voltage signal interface 330 are provided on the test circuit board 300; the second end of the temperature probe 260 is electrically connected to the temperature signal interface 310 on the test circuit board 300 through the temperature signal transmission line 270; the second end of the positive probe 220 and the second end of the negative probe 230 are electrically connected to the current signal interface 320 on the test circuit board 300 through the current signal transmission line 240 respectively; the second end of the positive probe 220 and the second end of the negative probe 230 are electrically connected to the voltage signal interface 330 on the test circuit board 300 through the voltage signal transmission line 250 respectively.

[0061] In this embodiment, by setting up a temperature signal interface 310, a current signal interface 320 and a voltage signal interface 330, when testing is required, the probe can be connected to the test circuit board 300 through a signal transmission line. After the test is completed or when testing is not required, the probe can be disconnected from the test circuit board 300 by unplugging the signal transmission line from the interface.

[0062] like Figure 3 and Figure 4 As shown, as an implementation mode, in the embodiment of the present application, a plurality of probe modules 200 are provided, and a plurality of test circuit boards 300 are provided; the first end of the temperature probe 260 of each probe module 200 is used to contact the corresponding battery 400 to be tested; the second end of the temperature probe 260 of each probe module 200 is electrically connected to the temperature signal interface 310 on the corresponding test circuit board 300; the first end of the positive probe 220 of each probe module 200 is used to contact the positive electrode of the corresponding battery 400 to be tested in the press 100, and the first end of the negative probe 230 of each probe module 200 is used to contact the negative electrode of the corresponding battery 400 to be tested in the press 100; the second end of the positive probe 220 of each probe module 200 and the second end of the negative probe 230 are respectively electrically connected to the current signal interface 320 on the corresponding test circuit board 300; the second end of the positive probe 220 of each probe module 200 and the second end of the negative probe 230 are respectively electrically connected to the voltage signal interface 330 on the corresponding test circuit board 300.

[0063] In this embodiment, the number of probe modules 200 and the number of test circuit boards 300 are the same. The number of probe modules 200 and the number of test circuit boards 300 can be set according to the needs of the test (for example, the number of batteries that need to be tested each time). The number of probe modules 200 and the number of test circuit boards 300 can be 12, 16, 24, etc. If the number of probe modules 200 and the number of test circuit boards 300 is 24, 24 probe modules 200 are arranged in each column of 12 in the press 100, 24 batteries to be tested 400 are placed in each column of 12 in the press 100, and each battery to be tested in the press 100 is controlled. 00 rises, so that the positive electrode of each battery 400 to be tested contacts the first end of the positive electrode probe 220 above, and the negative electrode of each battery 400 to be tested contacts the first end of the negative electrode probe 230 above, and the power is supplied through each test circuit board 300, and the charging and discharging of each battery 400 to be tested is controlled, and the data collected by each probe is processed and analyzed to obtain the capacity division test result of each battery. The upper computer connected to each test circuit board 300 can send test control instructions to each test circuit board 300, and receive the capacity division test result of each battery sent by each test circuit board 300 and display it.

[0064] In this embodiment, by providing a plurality of probe modules 200 and a plurality of test circuit boards 300 , it is possible to perform capacity division tests on a plurality of batteries simultaneously, which can effectively improve the efficiency of the battery capacity division test.

[0065] like Figures 1 to 3 As shown, as an implementation mode, in the embodiment of the present application, the test circuit board 300 is provided with a first electrical connector 340, a second electrical connector 350 and a third electrical connector 360, the current signal interface 320 includes a first current signal interface 321 and a second current signal interface 322, and the voltage signal interface 330 includes a first voltage signal interface 331 and a second voltage signal interface 332; the first current signal interface 321 is provided on the first electrical connector 340; the second current signal interface 322 is provided on the second electrical connector 350; the temperature signal interface 310, The first voltage signal interface 331 and the second voltage signal interface 332 are arranged on the third electrical connector 360; the second end of the positive probe 220 is electrically connected to the first current signal interface 321 through the current signal transmission line 240; the second end of the negative probe 230 is electrically connected to the second current signal interface 322 through the current signal transmission line 240; the second end of the positive probe 220 is electrically connected to the first voltage signal interface 331 through the voltage signal transmission line 250; the second end of the negative probe 230 is electrically connected to the second voltage signal interface 332 through the voltage signal transmission line 250.

[0066] In this embodiment, through the interfaces on the first electrical connector 340 , the second electrical connector 350 and the third electrical connector 360 , effective and stable transmission of signals between the probe and the test circuit board 300 can be achieved.

[0067] like Figure 4 As shown, as an implementation mode, in the embodiment of the present application, a bracket 110 is provided in the press 100, and a plurality of through holes are provided at the bottom of the bracket 110; a shell structure 210 of a plurality of probe modules 200 is provided in the bracket 110, and the first ends of the positive probes 220 and the first ends of the negative probes 230 of the plurality of probe modules 200 pass through the through holes at the bottom of the bracket 110; the bracket 110 is slidably connected to the press 100.

[0068] In this embodiment, by setting the bracket 110 and the press machine 100 to be slidably connected, it is convenient to pull out the bracket 110 as a whole, and by setting the shell structure 210 of the probe module 200 in the bracket 110, it is convenient to subsequently inspect and maintain the probe module 200 and the test circuit board 300 in the shell structure 210 of the probe module 200.

[0069] like Figure 4 As shown, as an implementation manner, in the embodiment of the present application, the bracket 110 is a drawer structure, and a handle 111 is fixedly provided on the outer side of the bracket 110 .

[0070] In this embodiment, by configuring the bracket 110 as a drawer structure with a handle 111 , it is more convenient to pull out the bracket 110 as a whole.

[0071] like Figure 3 As shown, as an implementation manner, in the embodiment of the present application, a heat dissipation fan 370 is fixedly provided on one side of the test circuit board 300; the heat dissipation fan 370 is electrically connected to the test circuit board 300.

[0072] In this embodiment, the cooling fan 370 is located in the shell structure, and a fixing plate can be fixedly set on one side of each test circuit board 300, and the fan is fixedly set on the fixing plate. By respectively setting the cooling fan 370 on one side of each test circuit board 300, the heat of each test circuit board 300 can be effectively dissipated, and the working performance of the test circuit board 300 can be effectively guaranteed.

[0073] like Figure 4 As shown, as an implementation mode, in the embodiment of the present application, a tray 120 is provided in the press 100; the tray 120 is used to place each battery 400 to be tested.

[0074] In this embodiment, a tray 120 is provided in the press 100 to facilitate the placement and positioning of each battery to be tested.

[0075] The embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery capacity division device, characterized in that: include: Presses, probe modules and test circuit boards; The probe module is arranged in the press, and the probe module comprises a shell structure, a positive electrode probe and a negative electrode probe, and the positive electrode probe and the negative electrode probe are fixedly arranged below the shell structure; The first end of the positive electrode probe is used to contact the positive electrode of the battery to be tested in the press, and the first end of the negative electrode probe is used to contact the negative electrode of the battery to be tested in the press; The test circuit board is arranged in the housing structure, and the second end of the positive electrode probe and the second end of the negative electrode probe are electrically connected to the test circuit board through a current signal transmission line and a voltage signal transmission line, respectively.

2. The battery capacity division device according to claim 1, characterized in that: The probe module also includes: a temperature probe; The temperature probe is fixedly arranged below the housing structure; The first end of the temperature probe is used to contact the battery to be tested; The second end of the temperature probe is electrically connected to the test circuit board through a temperature signal transmission line.

3. The battery capacity division device according to claim 2, characterized in that: The test circuit board is provided with a temperature signal interface, a current signal interface and a voltage signal interface; The second end of the temperature probe is electrically connected to the temperature signal interface on the test circuit board through the temperature signal transmission line; The second end of the positive probe and the second end of the negative probe are electrically connected to the current signal interface on the test circuit board through the current signal transmission line respectively; The second end of the positive probe and the second end of the negative probe are electrically connected to the voltage signal interface on the test circuit board through the voltage signal transmission line, respectively.

4. The battery capacity division device according to claim 3, characterized in that: The probe modules are provided in plurality, and the test circuit boards are provided in plurality; The first end of the temperature probe of each of the probe modules is used to contact the corresponding battery to be tested; The second end of the temperature probe of each of the probe modules is electrically connected to the temperature signal interface on the corresponding test circuit board; The first end of the positive electrode probe of each of the probe modules is used to contact the positive electrode of the corresponding battery to be tested in the press, and the first end of the negative electrode probe of each of the probe modules is used to contact the negative electrode of the corresponding battery to be tested in the press; The second end of the positive probe and the second end of the negative probe of each probe module are electrically connected to the current signal interface on the corresponding test circuit board respectively; The second end of the positive probe and the second end of the negative probe of each of the probe modules are electrically connected to the voltage signal interface on the corresponding test circuit board respectively.

5. The battery capacity division device according to claim 3, characterized in that: The test circuit board is provided with a first electrical connector, a second electrical connector and a third electrical connector, the current signal interface includes a first current signal interface and a second current signal interface, and the voltage signal interface includes a first voltage signal interface and a second voltage signal interface; The first current signal interface is arranged on the first electrical connector; The second current signal interface is arranged on the second electrical connector; The temperature signal interface, the first voltage signal interface and the second voltage signal interface are arranged on the third electrical connector; The second end of the positive electrode probe is electrically connected to the first current signal interface through the current signal transmission line; The second end of the cathode probe is electrically connected to the second current signal interface through the current signal transmission line; The second end of the positive electrode probe is electrically connected to the first voltage signal interface through the voltage signal transmission line; The second end of the cathode probe is electrically connected to the second voltage signal interface through the voltage signal transmission line.

6. The battery capacity division device according to claim 4, characterized in that: A bracket is arranged in the press, and a plurality of through holes are arranged at the bottom of the bracket; The housing structure of the plurality of probe modules is arranged in the bracket, and the first ends of the positive electrode probes and the first ends of the negative electrode probes of the plurality of probe modules pass through the through holes at the bottom of the bracket; The bracket is slidably connected to the press.

7. The battery capacity division device according to claim 6, characterized in that: The bracket is a drawer structure, and a handle is fixedly arranged on the outer side of the bracket.

8. The battery capacity division device according to claim 6, characterized in that: A heat dissipation fan is fixedly arranged on one side of the test circuit board; The heat dissipation fan is electrically connected to the test circuit board.

9. The battery capacity division device according to claim 4, characterized in that: A tray is provided in the press; The tray is used for placing each of the batteries to be tested.

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