Battery short circuit detection device and battery detection system

Abstract

The utility model discloses a kind of battery short circuit detection device and battery detection system, the battery short circuit detection device includes: placing mechanism, the placing mechanism is for placing pole core;Detection mechanism, the detection mechanism can move along height direction, the detection mechanism includes: at least two groups of detection components, any group The detection component includes: multiple detection members, multiple The detection member is respectively with the positive pole ear and negative pole ear of the pole core and is abutted;Wherein, the pole core size detected by at least two groups The detection component is all different. Among them, the size of the pole core that at least two groups of detection components can detect is different, can be adapted to the short circuit detection of the pole core of at least two kinds of working conditions, and simple structure, easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery short circuit detection device and a battery detection system. Background Technology

[0002] During battery manufacturing, physical contact can occur inside the battery, causing a short circuit. This internal short circuit will lead to abnormal cell formation data, significantly impacting cell performance. Therefore, short-circuit testing of the cells is necessary after multiple processes are completed, as physical contact can easily occur inside the battery, creating a short circuit. Accurate diagnosis of internal short circuits within the cells is therefore crucial.

[0003] In related technologies, some devices for short-circuit detection of electrode cores can only be applied to short-circuit detection under a single working condition; other devices require the entire upper and lower pressure plates to be disassembled and replaced when the electrode core size changes, making them incompatible with multiple electrode core sizes and the replacement process complicated. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery short-circuit detection device, in which at least two sets of detection components can detect electrode cores of different sizes, adapting to short-circuit detection of electrode cores under at least two operating conditions, and with a simple structure and easy operation.

[0005] This invention also proposes a battery detection system.

[0006] A battery short-circuit detection device according to a first aspect of the present invention includes: a placement mechanism for placing an electrode core; and a detection mechanism movable along a height direction, the detection mechanism including: at least two sets of detection components, each set of detection components including: multiple probes, the multiple probes respectively abutting against the positive and negative tabs of the electrode core; wherein the electrode cores detected by the at least two sets of detection components are of different sizes.

[0007] According to the battery short circuit detection device of this utility model embodiment, at least two sets of detection components can detect electrode cores of different sizes, which can be adapted to short circuit detection of electrode cores under at least two working conditions, and the structure is simple and easy to operate.

[0008] According to some embodiments of the present invention, the battery short circuit detection device further includes a control component, which is electrically connected to at least two sets of the detection components and is used to control at least two sets of the detection components to detect the electrode core.

[0009] According to some embodiments of the present invention, the detection mechanism further includes: an upper pressure plate assembly, the upper pressure plate assembly having a first mounting portion, and the detection assembly being connected to the first mounting portion.

[0010] According to some embodiments of the present invention, the detection mechanism further includes: a membrane probe assembly, which is disposed on the upper pressure plate assembly. The membrane probe assembly can be used to pierce the aluminum-plastic film of the pre-sealed electrode core to detect whether there is a short circuit inside the pre-sealed electrode core.

[0011] According to some embodiments of the present invention, the first mounting part is a waist-shaped groove, and the detection component can be connected to different positions of the waist-shaped groove to adjust the position of the detection component.

[0012] According to some embodiments of the present invention, the detection component further includes: a mounting base, the mounting base being connected to the upper pressure plate assembly, the mounting base having a guide space extending in the height direction, one end of the detector being inserted into the guide space and the other end protruding from the mounting base.

[0013] According to some embodiments of the present invention, a first limiting part is formed at one end of the guide space, and a second limiting part is provided on the probe, wherein the first limiting part can be selectively matched with the second limiting part.

[0014] According to some embodiments of the present invention, the detection component further includes an elastic element disposed between one end of the probe and the bottom wall of the mounting base.

[0015] According to some embodiments of the present invention, the battery short circuit detection device further includes: a driving mechanism, which is connected to the detection mechanism in a transmission manner, and the driving mechanism drives the detection mechanism to move along the height direction.

[0016] According to some embodiments of the present invention, the driving mechanism includes a driving member and a transmission member, the driving member and the transmission member are connected in a transmission manner, the transmission member is connected in a transmission manner to the detection mechanism, and the driving member drives the transmission member to move along the height direction, so as to drive the detection mechanism to move along the height direction.

[0017] According to some embodiments of the present invention, the electrode core includes: an electrode core body, a positive electrode tab, and a negative electrode tab; and the placement mechanism includes: a placement platform and two trays, the two trays being connected to the placement platform, the placement platform supporting the electrode core body, and the two trays respectively supporting the positive electrode tab and the negative electrode tab.

[0018] According to some embodiments of the present invention, a plurality of second mounting portions are provided on both sides of the placement platform along the length direction and spaced apart along the length direction. A third mounting portion is provided on the two trays. The third mounting portion is selectively connected to one of the second mounting portions so that the placement mechanism supports pole cores of different sizes.

[0019] A battery detection system according to a second aspect of the present invention includes: the battery short circuit detection device.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is an overall schematic diagram of the battery short-circuit detection device according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the detection mechanism according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the placement mechanism according to an embodiment of the present utility model;

[0025] Figure 4 This is a cross-sectional view of the detection component according to an embodiment of the present utility model.

[0026] Figure label:

[0027] 100. Battery short circuit detection device;

[0028] 10. Placement mechanism; 11. Placement platform; 111. Second installation section; 12. Pallet;

[0029] 20. Detection mechanism; 21. Detection component; 211. Detector; 212. Mounting base; 213. Guide space; 214. Elastic component; 215. First limiting part; 216. Second limiting part; 217. Guide part; 22. Upper pressure plate assembly; 221. First mounting part; 23. Membrane probe assembly; 24. Guide shaft;

[0030] 30. Drive mechanism; 41. Frame; 200. Pole core. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0032] The following is for reference. Figures 1-4 The present invention describes a battery short circuit detection device 100 according to an embodiment of the present invention, and also proposes a battery detection system having the above-described battery short circuit detection device 100.

[0033] Notice: Figures 1-4 The length direction of the battery short circuit detection device 100 is the same as the length direction of the electrode core 200 when it is placed on the placement mechanism 10. Figures 1-4 The width direction of the electrode core 200 is consistent with the width direction of the placement mechanism 10; Figures 1-4 The height direction of the core 200 is consistent with the height direction of the core 200 placed on the placement mechanism 10.

[0034] like Figure 1 As shown, the battery short circuit detection device 100 includes a placement mechanism 10 and a detection mechanism 20. The placement mechanism 10 is used to place the electrode core 200. The detection mechanism 20 can be arranged opposite to the placement mechanism 10. After the electrode core 200 is placed on the placement mechanism 10, the detection mechanism 20 can move along the height direction until it comes into contact with the positive and negative tabs of the electrode core 200 to detect whether there is a short circuit between the positive and negative tabs.

[0035] The electrode core 200 includes: an electrode core body, a positive electrode tab, and a negative electrode tab. The positive electrode tab and the negative electrode tab of the electrode core 200 are located on both sides of the length direction of the electrode core 200, respectively. The positive electrode tab is connected to one side of the length direction of the electrode core body, and the negative electrode tab is connected to the other side of the length direction of the electrode core body.

[0036] according to Figure 2 As shown, the detection mechanism 20 includes at least two sets of detection components 21. Each set of detection components 21 includes multiple probes 211, which respectively abut against the positive and negative tabs of the electrode core 200. The electrode core 200 detected by the at least two sets of detection components 21 has different dimensions. That is, the at least two sets of detection components 21 are installed in different positions, i.e., the at least two sets of detection components 21 are spaced apart. The detection components 21 can be two or three sets; in this embodiment, two sets are used as an example.

[0037] Any set of detection components 21 may include two detectors 211, namely a positive tab detector 211 and a negative tab detector 211. The positive tab detector 211 is used to abut against the positive tab of the electrode core 200, and the negative tab detector 211 is used to abut against the negative tab of the electrode core 200. The detection component 21 is connected to a detection circuit to detect whether there is a short circuit between the positive tab and the negative tab of the electrode core 200.

[0038] Furthermore, the two detectors 211 are spaced apart along the length of the detection mechanism 20, and the line connecting the two detectors 211 can be parallel to the length of the detection mechanism 20; or, the line connecting the two detectors 211 can be offset relative to the length of the detection mechanism 20.

[0039] During the manufacturing process, electrode core 200 needs to undergo an isostatic pressing process. The dimensions of electrode core 200 change before and after isostatic pressing; in the length direction, the dimension of electrode core 200 after isostatic pressing is smaller than that before isostatic pressing. Before and after isostatic pressing, it is necessary to check whether there is a short circuit between the positive and negative tabs of electrode core 200.

[0040] If the distance between the two detectors 211 in any group is different in the length direction of the detection mechanism 20, then the two groups of detection components 21 will have different dimensions in the length direction, and the two groups of detection components 21 will be able to detect different sizes of the pole core 200.

[0041] Therefore, the two sets of detection components 21 can detect electrode cores 200 of different sizes. The detection components 21 have a simple structure and can adapt to short-circuit detection of electrode cores 200 under both isostatic pressing and post-isostatic pressing conditions. In other words, at least two sets of detection components 21 can detect electrode cores 200 of different sizes, adapting to short-circuit detection of electrode cores 200 under at least two operating conditions. This solves the problem of electrode core 200 size changes before and after isostatic pressing. Furthermore, the battery short-circuit detection device 100 has a simple structure and is easy to operate.

[0042] Furthermore, the battery short-circuit detection device 100 also includes a control component electrically connected to the two sets of detection components 21, used to control the two sets of detection components 21 to detect the electrode core 200. Specifically, the control component can control the operation of the two sets of detection components 21 respectively, and the control component can connect the detection component 21 and the detection circuit respectively, so that the detection component 21 can detect whether there is a short circuit between the positive and negative tabs. For example, when it is necessary to detect the electrode core 200 before isostatic pressing, the control component energizes one set of detection components 21, and the control component connects the detection component 21 and the detection circuit to detect whether there is a short circuit between the positive and negative tabs of the electrode core 200 of the corresponding size of the detection component 21.

[0043] Since the length of the electrode core 200 before isostatic pressing is greater than the length of the electrode core 200 after isostatic pressing, when the electrode core 200 before isostatic pressing is detected, the control component controls the detection component 21 located on the outside to detect the electrode core 200, and makes the detection component 21 located on the inside not work.

[0044] When testing the isostatically pressed electrode core 200, the control component controls the inner detection component 21 to test the electrode core 200, and disables the outer detection component 21.

[0045] like Figure 1 and Figure 2 As shown, the testing mechanism 20 further includes an upper pressure plate assembly 22, on which a first mounting portion 221 is provided, and the testing component 21 is connected to the first mounting portion 221. Specifically, the upper pressure plate assembly 22 is used to mount the testing component 21, and the testing component 21 is connected to the upper pressure plate assembly 22 via the first mounting portion 221, thereby mounting the testing component 21 on the upper pressure plate assembly 22.

[0046] The first mounting part 221 can be a mounting slot, the detection component 21 is installed in the mounting slot and connected to the mounting slot, the detection circuit can be set in the upper pressure plate assembly 22, after the detection component 21 is installed in the upper pressure plate assembly 22, the control component can electrically connect the detection circuit and the detection component 21 to detect whether there is a short circuit between the positive and negative tabs of the electrode core 200.

[0047] For the pre-sealed electrode core 200, due to a series of processes and operations, a short circuit may occur inside the electrode core 200. Therefore, it is necessary to check whether there is a short circuit inside the electrode core 200.

[0048] Combination Figure 1 and Figure 2 As shown, the detection mechanism 20 further includes a membrane probe assembly 23, which is disposed on the upper pressure plate assembly 22. The membrane probe assembly 23 can be used to pierce the aluminum-plastic film of the pre-sealed electrode core 200 to detect whether there is a short circuit inside the pre-sealed electrode core 200. Specifically, the membrane probe assembly 23 can move together with the upper pressure plate assembly 22 along the height direction. The membrane probe assembly 23 is disposed opposite to the placement mechanism 10. During the downward movement of the membrane probe assembly 23, the membrane probe assembly 23 gradually pierces the aluminum-plastic film of the pre-sealed electrode core 200 so that the membrane probe assembly 23 contacts the inside of the electrode core 200 and detects whether there is a short circuit inside the electrode core 200.

[0049] In some embodiments, the first mounting portion 221 can be a waist-shaped groove, and the detection component 21 can be connected to different positions of the waist-shaped groove to adjust the position of the detection component 21. Specifically, the waist-shaped groove extends along the width direction of the detection mechanism 20, and the detection component 21 cooperates with different positions of the waist-shaped groove to adjust the position of the detection component 21 in the width direction of the upper pressure plate assembly 22, so as to realize the alignment of the detection component 21 with the electrode core 200, which facilitates the detection of whether there is a short circuit between the positive electrode tab and the negative electrode tab.

[0050] Reference Figure 4As shown, the detection assembly 21 also includes: a mounting base 212, which is connected to the upper pressure plate assembly 22. A guide space 213 extending along the height direction is formed within the mounting base 212. One end of the probe 211 is inserted into the guide space 213, and the other end of the probe 211 protrudes from the mounting base 212. Specifically, the probe 211 is connected to the upper pressure plate assembly 22 via the mounting base 212. The probe 211 is inserted into the guide space 213, with one end of the probe 211 engaging with the mounting base 212 for limiting. The probe 211 can move along the height direction within the guide space 213, and the other end of the probe 211 protrudes from the mounting base 212, so that the probe 211 can contact the positive or negative tab of the electrode core 200, facilitating the detection of whether there is a short circuit between the positive and negative tabs.

[0051] Furthermore, a first limiting part 215 is formed at one end of the guide space 213, and a second limiting part 216 is provided on the probe 211. The first limiting part 215 and the second limiting part 216 selectively limit and cooperate. Specifically, one side of the guide space 213 is open, and the other end of the probe 211 protrudes through the opening and out of the mounting base 212. The first limiting part 215 is provided around the opening, and the second limiting part 216 is provided at one end of the probe 211. The second limiting part 216 can cooperate with the first limiting part 215 to limit and cooperate with the mounting base 212, so that one end of the probe 211 can be limited and cooperated with the mounting base 212 to prevent the probe 211 from slipping.

[0052] The first limiting part 215 can be a first limiting step, and the second limiting part 216 can be a second limiting step. The first limiting step and the second limiting step limit each other and cooperate to limit each other, so that the detector 211 can move along the height direction in the guide space 213.

[0053] like Figure 4 As shown, the detection assembly 21 further includes an elastic element 214, which is disposed between one end of the probe 211 and the top wall of the mounting base 212. Specifically, one end of the probe 211 is provided with a groove, and the mounting base 212 is provided with a guide portion 217 protruding from the bottom wall in the guide space 213. The guide portion 217 is inserted into the groove, and the elastic element 214 can be sleeved on the periphery of the guide portion 217, abutting against the groove and the bottom wall of the mounting base 212. When the detection assembly 21 moves downward, it moves to abut against the positive or negative electrode tab, and the elastic element 214 can be compressed to prevent the probe 211 from damaging the electrode tab. After the probe 211 has completed detection, the detection assembly 21 moves upward, and under the action of the elastic element 214, the probe 211 moves downward to its reset position.

[0054] like Figure 1As shown, the battery short-circuit detection device 100 further includes a drive mechanism 30, which is connected to the detection mechanism 20 in a transmission manner. The drive mechanism 30 drives the detection mechanism 20 to move along the height direction. Specifically, the battery short-circuit detection device 100 includes a frame 41, on which the drive mechanism 30 is disposed. The drive mechanism 30 is connected to the detection mechanism 20 in a transmission manner, so that the detection mechanism 20 can move relative to the frame 41 in the height direction to realize the detection of the electrode core 200 by the detection mechanism 20.

[0055] In some embodiments, the drive mechanism 30 includes a drive member and a transmission member, which are connected in a transmission manner. The transmission member is connected in a transmission manner to the detection mechanism 20. The drive member drives the transmission member to move along the height direction, thereby causing the detection mechanism 20 to move along the height direction. Specifically, the drive member can be a cylinder or a motor. The drive member drives the transmission member to move along the height direction, and the transmission member can be connected in a transmission manner to the detection mechanism 20. Thus, the detection mechanism 20 moves along the height direction under the drive of the drive member, realizing short-circuit detection of the electrode core 200 before and after isostatic pressing and short-circuit detection of the electrode core 200 after pre-sealing.

[0056] The transmission component can be a floating joint to ensure that the mechanism does not jam due to the force direction not being perpendicular to the detection mechanism 20.

[0057] In some embodiments, the detection mechanism 20 further includes an upper movable beam, an upper pressure plate assembly 22 fixedly connected to the upper movable beam, and the upper movable beam being connected to a transmission component. Thus, the drive mechanism 30 can drive the upper pressure plate assembly 22 to move along the height direction to achieve short-circuit detection of the electrode core 200.

[0058] In addition, a pressure sensor can be installed on the upper movable beam to ensure the consistency and real-time performance of the force applied by the pressure sensor and the upper pressure plate assembly 22. The pressure sensor is communicatively connected to the drive component. When the probe 211 abuts against the electrode tab, the drive component can adjust the applied force according to the signal fed back by the pressure sensor to ensure that the pressure on the electrode core 200 reaches the required force and pressure time, thereby improving the accuracy of the detection mechanism 20.

[0059] according to Figure 1 As shown, a guide shaft 24 is provided between the detection mechanism 20 and the frame 41. The guide shaft 24 passes through the upper pressure plate assembly 22. The guide shaft 24 plays a guiding and limiting role when the detection mechanism 20 moves in the height direction, ensuring that the detection mechanism 20 can move in the vertical direction and avoiding skew due to axial force, which would ultimately cause uneven pressure on the surface of the electrode core 200.

[0060] In this embodiment of the utility model, the length direction of the detection mechanism 20 is consistent with the length direction of the placement mechanism 10, and the length direction of the electrode core 200 is consistent with the length direction of the placement mechanism 10.

[0061] like Figure 3 As shown, the placement mechanism 10 includes a placement platform 11 and two trays 12. The two trays 12 are connected to the placement platform 11. The placement platform 11 supports the electrode core body, and the two trays 12 support the positive and negative electrodes, respectively. Specifically, the positive and negative electrodes of the electrode core 200 are located on both sides of the electrode core 200 along its length, and the two trays 12 are spaced apart along the length of the placement mechanism 10. For the electrode core 200 before pre-sealing, the two trays 12 can support the positive and negative electrodes; for the electrode core 200 after pre-sealing, the two trays 12 support both sides of the electrode core 200 along its length.

[0062] In some embodiments, the tray 12 may be provided with a groove, which, while supporting the positive and negative tabs, ensures that the membrane probe assembly 23 will not directly contact the placement platform 11 after piercing the aluminum-plastic film, thus avoiding the risk of leakage and ensuring safety.

[0063] like Figure 3 As shown, multiple second mounting portions 111 are provided on both sides of the placement platform 11 along the length direction, and third mounting portions are provided on the two trays 12. The third mounting portions are selectively connected to one of the second mounting portions 111, so that the placement mechanism 10 can support pole cores 200 of different sizes. Specifically, multiple second mounting portions 111 are provided at the mounting positions of the two trays 12, and the multiple second mounting portions 111 are spaced apart along the length direction of the placement platform 11. The trays 12 are provided with third mounting portions, and the third mounting portions are connected to one of the second mounting portions 111 according to the length of the pole core 200, so that the placement mechanism 10 can support different pole cores 200.

[0064] The second mounting part 111 can be a first mounting hole, and the third mounting part can be a second mounting hole. A fastener can pass through the second mounting hole and one of the first mounting holes to securely connect to the placement platform 11. The second mounting part 111 includes two first mounting holes located opposite each other on both sides of the placement platform 11 in the width direction. Any two corresponding first mounting holes can be a group. The third mounting part can have two second mounting holes, each connecting to one of the groups of first mounting holes, thus connecting the tray 12 to the placement platform 11.

[0065] Testing Procedure: First, place the electrode core 200 on the placement platform 11. After placing the electrode core 200, the drive mechanism 30 drives the testing mechanism 20 downward. The drive mechanism 30 applies pressure to make the probe 211 press down on the electrode tab, completing the pre-pressurization action (for the pre-sealed electrode core 200, at this time the membrane piercing needle assembly moves downward and has reached the position to pierce the aluminum-plastic film, completing the aluminum-plastic film piercing action). The drive mechanism 30 continues to drive the upper pressure plate assembly 22 downward, continuously applying the required pressure to the electrode core 200 located in the middle of the upper pressure plate assembly 22. At the same time, the probe 211 applies sufficient pressure to the electrode tab to ensure that the probe 211 and the electrode tab make contact. At this time, power-on testing is performed to ensure short-circuit testing of the electrode core 200 under pressure, realizing short-circuit pressure testing of the electrode core 200 under various working conditions, and completing the performance testing function of the electrode core 200.

[0066] In addition to achieving detection, the battery short circuit detection device 100 of this utility model also has the ability to quickly change models. When the electrode core 200 to be detected undergoes a large size change, only the base plate (the detection component 21 and the membrane needle component are mounted on the base plate) and the support plate 12 of the upper pressure plate assembly 22 need to be changed.

[0067] Regarding the dimensions of the placement platform 11, it is designed to be compatible with the largest electrode core 200 size, requiring no changes. Only the thickness of the tray 12 needs to be adjusted according to the thickness of the electrode core 200 being tested, and the installation position changed to meet the usage requirements. For the upper pressure plate assembly 22, the dimensions of the base plate need to be changed according to the electrode core 200 size to accommodate variations in electrode core 200 size. Simultaneously, the extension length of the needle-piercing machine can be adjusted according to the electrode core 200 thickness to accommodate variations in electrode core 200 size after pre-sealing. The structure of the testing assembly 21 requires no adjustment. In summary, when product changes occur, rapid changeover is possible, installation is convenient, and fewer materials are required, saving significant changeover time and materials, and conserving manpower and resources.

[0068] According to the battery testing system of the second aspect of this utility model, the two sets of testing components 21 can detect electrode cores 200 of different sizes. The structure of the testing components 21 is simple and can adapt to short-circuit detection of electrode cores 200 under two operating conditions: before and after isostatic pressing. That is to say, at least two sets of testing components 21 can detect electrode cores 200 of different sizes, which can adapt to short-circuit detection of electrode cores 200 under at least two operating conditions, thereby solving the problem of electrode core 200 size change before and after isostatic pressing. Furthermore, the battery short-circuit detection device 100 has a simple structure and is easy to operate.

[0069] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery short-circuit detection device, characterized in that, include: Placement mechanism (10) for placing electrode core (200); The detection mechanism (20) is movable along the height direction. The detection mechanism (20) includes at least two sets of detection components (21). Each set of detection components (21) includes multiple detectors (211). The multiple detectors (211) respectively abut against the positive and negative electrodes of the electrode core (200). Among them, at least two sets of the detection components (21) detect different sizes of the pole core (200).

2. The battery short-circuit detection device according to claim 1, characterized in that, Also includes: A control component, which is electrically connected to at least two sets of the detection components (21), is used to control at least two sets of the detection components (21) to detect the electrode core (200).

3. The battery short-circuit detection device according to claim 1, characterized in that, The detection mechanism (20) further includes an upper pressure plate assembly (22), on which a first mounting part (221) is provided, and the detection assembly (21) is connected to the first mounting part (221).

4. The battery short-circuit detection device according to claim 3, characterized in that, The detection mechanism (20) further includes a membrane probe assembly (23), which is disposed on the upper pressure plate assembly (22). The membrane probe assembly (23) can be used to pierce the aluminum-plastic film of the pre-sealed electrode core (200) to detect whether there is a short circuit inside the pre-sealed electrode core (200).

5. The battery short-circuit detection device according to claim 3, characterized in that, The first mounting part (221) is a waist-shaped groove, and the detection component (21) can be connected to different positions of the waist-shaped groove to adjust the position of the detection component (21).

6. The battery short-circuit detection device according to claim 3, characterized in that, The detection component (21) further includes: a mounting base (212), which is connected to the upper pressure plate assembly (22). A guide space (213) extending along the height direction is formed in the mounting base (212). One end of the detector (211) is inserted into the guide space (213) and the other end protrudes from the mounting base (212).

7. The battery short-circuit detection device according to claim 6, characterized in that, A first limiting part (215) is formed at one end of the guide space (213), and a second limiting part (216) is provided on the probe (211). The first limiting part (215) can cooperate with the second limiting part (216) for limiting.

8. The battery short-circuit detection device according to claim 6, characterized in that, The detection component (21) further includes an elastic element (214), which is disposed between one end of the probe (211) and the bottom wall of the mounting base (212).

9. The battery short-circuit detection device according to claim 1, characterized in that, Also includes: A drive mechanism (30) is connected to the detection mechanism (20) in a transmission manner, and the drive mechanism (30) drives the detection mechanism (20) to move along the height direction.

10. The battery short-circuit detection device according to claim 9, characterized in that, The driving mechanism (30) includes a driving component and a transmission component, which are connected in a transmission manner. The transmission component is connected in a transmission manner to the detection mechanism (20). The driving component drives the transmission component to move along the height direction, thereby driving the detection mechanism (20) to move along the height direction.

11. The battery short-circuit detection device according to claim 1, characterized in that, The electrode core (200) includes: an electrode core body, a positive electrode tab, and a negative electrode tab; and, The placement mechanism (10) includes a placement platform (11) and two trays (12). The two trays (12) are connected to the placement platform (11). The placement platform (11) is used to support the electrode core body. The two trays (12) support the positive electrode tab and the negative electrode tab respectively.

12. The battery short-circuit detection device according to claim 11, characterized in that, The placement platform (11) has multiple second mounting parts (111) spaced apart along the length direction on both sides. The two trays (12) have third mounting parts. The third mounting parts are selectively connected to one of the second mounting parts (111) so that the placement mechanism (10) supports pole cores (200) of different sizes.

13. A battery testing system, characterized in that, include: The battery short circuit detection device (100) according to any one of claims 1-12.

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