Battery crimping device and battery internal resistance test tool

Abstract

The utility model relates to a battery crimping device and a battery internal resistance test tool, and is applied to the field of batteries. The device comprises a carrying platform used for accommodating a to-be-tested battery; the pressing and holding module comprises a detachable pressing plate, and the pressing and holding module is used for being connected with the test probe through an elastic piece; and the driving module is connected with the pressing module and is used for driving the pressing module to be switched between a pressing state in which the pressing module is in pressing connection with the tabs and a separation state in which the pressing module is far away from the tabs. The reliability of the battery internal resistance testing process can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular to a battery crimping device and a battery internal resistance testing tool. Background Art

[0002] To ensure the quality and reliability of the battery, an internal resistance test must be performed after the battery is manufactured to ensure the consistency of the internal resistance of each battery in the battery module.

[0003] In the related art, a battery internal resistance test tool is used to contact a test probe with a tab of a battery to be tested, connect the battery to be tested to a test circuit, and test the internal resistance of the battery to be tested.

[0004] However, the battery internal resistance test fixture in the related art may cause the tabs of the battery to be tested to break during the test process, affecting the subsequent use of the battery to be tested, and the test reliability is low. Utility Model Content

[0005] Based on this, it is necessary to provide a highly reliable battery crimping device and battery internal resistance testing tooling to address the above technical problems.

[0006] In a first aspect, the present application provides a battery crimping device, which adopts the following technical solution:

[0007] A battery crimping device, comprising:

[0008] A carrier, used to accommodate the battery to be tested;

[0009] A pressing module, comprising a detachable pressing plate, the pressing module being used to connect with the test probe via an elastic member;

[0010] The driving module is connected to the pressing module and is used to drive the pressing module to switch between a pressing state in which the pressing module is pressed against the tab of the battery to be tested and a separation state away from the tab.

[0011] In one embodiment, the pressing module in the provided battery crimping device further includes: a probe mounting plate, on which a mounting hole is formed, and the mounting hole is used to cooperate with the elastic member and connect with the test probe.

[0012] In one embodiment, a carrier in a battery crimping device is provided, comprising:

[0013] The battery base plate is used to carry the battery cells to be tested;

[0014] Battery cell limiting plates are arranged on opposite sides of the battery cell bottom plate;

[0015] The tab limiting plates are arranged on the other two sides of the battery cell base plate and are used to support the tabs of the battery to be tested.

[0016] In one embodiment, a first waist-shaped hole is provided on the cell limiting plate in the provided battery crimping device, a second waist-shaped hole is provided on the tab limiting plate, and limiting holes corresponding to the first waist-shaped hole and the second waist-shaped hole are provided on the cell bottom plate.

[0017] In one embodiment, the provided battery crimping device further includes: a lifting structure plate, which is connected to the driving module and the pressing module respectively, and is used to drive the pressing module to move under the drive of the driving module.

[0018] In one embodiment, the pressing module in the provided battery pressing device further includes:

[0019] A substrate is arranged at the bottom of the carrier;

[0020] Position limiting blocks are arranged on both sides of the base plate;

[0021] Among them, the carrier moves on the substrate. When the carrier approaches the position limit block located on the first side of the substrate, the carrier is in the loading position; when the carrier approaches the position limit block located on the second side of the substrate, the carrier is in the testing position.

[0022] In one embodiment, the provided battery crimping device further includes:

[0023] The slide rail is arranged at the bottom of the carrier and is used to support the carrier to switch between the loading position and the testing position.

[0024] In one embodiment, the provided battery crimping device further includes: a micro-motion limiter, which is provided on the substrate and is used to limit the position of the carrier.

[0025] In one embodiment, the provided battery crimping device further includes:

[0026] Identifier, used for identifying information of the battery to be tested;

[0027] The identification support assembly is connected with the identifier and the lifting structure plate.

[0028] In a second aspect, the present application provides a battery internal resistance testing tool, comprising the battery crimping device of the first aspect, and a test probe connected to a holding module in the battery crimping device for testing a battery to be tested.

[0029] The above-mentioned battery crimping device and battery internal resistance testing tooling utilize a pressing module to abut against the tabs of the battery to be tested. During the internal resistance test, two pressing modes, with and without a pressing plate, can be determined according to the size of the test current. When the tabs of the battery to be tested are crimped using a pressing plate, the tabs of the battery to be tested can be kept flat and stable, thereby avoiding damage to the tabs by the pointed probes of the test probes in related technologies during the test. After the tabs are flattened, the tabs are tested through the pressing module, which can increase the contact area of ​​the test probes and ensure that the position and state of the contact points are consistent during each measurement, so as to improve the consistency of the test results, thereby improving the reliability of the battery crimping device and the battery internal resistance testing tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the structure of a battery crimping device in one embodiment;

[0031] Figure 2 is a schematic structural diagram of a battery crimping device in another embodiment;

[0032] Figure 3 This is a structural diagram of a pressing module in one embodiment;

[0033] Figure 4 Schematic diagram of the structure of the carrier in one embodiment;

[0034] Figure 5 Schematic diagram of the position of the loading position in one embodiment;

[0035] Figure 6 is a schematic diagram of the positions of the test bits in one embodiment;

[0036] Figure 7 This is a schematic structural diagram of a battery internal resistance testing tool in one embodiment;

[0037] Description of the accompanying drawings:

[0038] 1. Carrier; 11. Cell base plate; 12. Cell stop plate; 121. First waist-shaped hole; 13. Tab stop plate; 131. Lower test copper plate; 132. Second waist-shaped hole; 14. Isolation strip; 15. Push-pull handle; 2. Pressing module; 21. Pressing plate; 22. Probe mounting plate; 23. Buffer shaft; 24. Flange linear bearing; 25. Gasket; 26. Adjustment plate; 27. Rib plate; 3. Drive module; 31. First cylinder; 32 , second cylinder; 33, cylinder base plate; 34, cylinder fixing block; 35, fixing block buckle; 4, lifting structure plate; 5, guide column; 6, base plate; 61, slide rail; 62, position limit block; 63, pad; 64, micro-limiting piece; 7, identification support assembly; 71, top plate; 72, adjustment rod; 73, identification fixing block; 74, identification adjustment plate; 75, limit screw; 81, operating table; 82; operating table bracket; 83, composite caster. DETAILED DESCRIPTION

[0039] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0040] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does 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 cannot be understood as a limitation on this application.

[0041] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0042] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0045] The following is combined with Figure 1-7 The embodiments of the present application are described in further detail.

[0046] Figure 1 A schematic structural diagram of a battery crimping device in an embodiment of the present application is shown; Figure 2 FIG2 shows a schematic structural diagram of a battery crimping device in another embodiment of the present application. Figure 1 and Figure 2 A battery crimping device provided in one embodiment of the present application includes: a carrier 1 for accommodating a battery to be tested; a pressing module 2 including a detachable pressing plate 21, the pressing module 2 being connected to a test probe via an elastic member; and a driving module 3 connected to the pressing module 2 for driving the pressing module 2 to switch between a pressing state in which the battery is pressed against a tab of the battery to be tested and a separation state away from the tab.

[0047] In one possible implementation, Figure 3As shown, the pressing module 2 further includes: a probe mounting plate 22 , on which a mounting hole is provided. The mounting hole is used to cooperate with the elastic member and connect with the test probe.

[0048] The holding module 2 is connected to the test probe through an elastic member and a probe mounting plate 22, so that the test probe can move driven by the holding module 2 on the one hand, and can move relative to the holding module 2 under the elastic force of the elastic member on the other hand.

[0049] In one possible embodiment, when a large current is used to test the battery under test, a pressure plate 21 is assembled in the pressure holding module 2. When the driving module 3 drives the pressure holding module 2 to switch to the pressure holding state, the first surface of the pressure plate 21 is pressed against the tab, and the second surface of the pressure plate 21 is connected to the test probe. When a small current is used to test the battery under test, the pressure plate 21 is removed from the pressure holding module 2. When the driving module 3 drives the pressure holding module 2 to switch to the pressure holding state, the pressure holding module 2 drives the test probe to connect to the tab to test the battery under test. A large current is a current greater than a preset current threshold, and a small current is a current less than or equal to the current threshold.

[0050] Optionally, the material of the pressing plate 21 may be copper.

[0051] Figure 4 FIG1 shows a schematic diagram of the structure of the carrier 1 in one embodiment of the present application. Figure 4 As shown, the carrier 1 provided in one embodiment of the present application includes: a battery cell base plate 11, used to carry the battery cell of the battery to be tested; a battery cell limiting plate 12, arranged on two opposite sides of the battery cell base plate 11; and a tab limiting plate 13, arranged on the other two sides of the battery cell base plate 11, used to carry the tabs of the battery to be tested.

[0052] In one possible embodiment, the tab stopper 13 is provided with a lower test copper insert 131 to reduce the contact resistance between the battery tab and the test equipment, ensuring stable current transmission at the connection point, thereby improving test accuracy. This effectively disperses and conducts heat, preventing local overheating and protecting the battery and test equipment.

[0053] Optionally, the carrier 1 further includes an isolation strip 14, which is disposed on the cell base plate 11. The isolation strip 14, the cell limiting plate 12, and the tab limiting plate 13 separate the cell base plate 11 into a first accommodating area and a second accommodating area. During the internal resistance test of the battery to be tested, the cell of the first battery to be tested is placed in the first accommodating area, with the positive and negative tabs respectively placed on the lower test copper inlays 131 of the tab limiting plates 13 on both sides; the cell of the second battery to be tested is placed in the second accommodating area, with the positive and negative tabs respectively placed on the lower test copper inlays 131 of the tab limiting plates 13 on both sides. This can reduce contact resistance and reduce measurement errors caused by poor contact.

[0054] Optionally, there may be multiple isolation strips 14 to separate the cell bottom plate 11 into a number of accommodating areas, and each tab limiting plate 13 is provided with lower test copper inlays 131 with the same number as the accommodating areas.

[0055] In one possible embodiment, a first waist-shaped hole 121 is provided on the cell limiting plate 12, a second waist-shaped hole 132 is provided on the tab limiting plate 13, and a limiting hole corresponding to the first waist-shaped hole 121 and the second waist-shaped hole 132 is provided on the cell bottom plate 11. Optionally, the first waist-shaped hole 121 is provided at both ends of the cell limiting plate 12, and the second waist-shaped hole 132 is provided at both ends of the tab limiting plate 13, and between two adjacent lower test copper inlays 131. By passing a screw through the first waist-shaped hole 121 of the cell limiting plate 12 and the limiting hole on the cell bottom plate 11, the size of the accommodating area can be adjusted in the width direction of the battery to be tested; by passing a screw through the second waist-shaped hole 132 and the limiting hole, the size of the accommodating area can be adjusted in the length direction of the battery to be tested, so that the size of the accommodating area matches the size of the battery to be tested. In this embodiment, the width direction of the battery to be tested is the extension direction of the tab limiting plate 13, and the length direction is the extension direction of the cell limiting plate 12.

[0056] The above-mentioned battery crimping device utilizes the pressing module 2 to abut against the tab of the battery to be tested. During the internal resistance test, it can determine the two pressing modes with and without a pressing plate according to the size of the test current. When the tab of the battery to be tested is crimped using the pressing plate, the tab of the battery to be tested can be kept flat and stable, avoiding damage to the tab by the pointed probe of the test probe in the related technology during the test. After the tab is flattened, the tab is tested by the pressing module 2, which can increase the contact area of ​​the test probe and ensure that the position and state of the contact point are consistent during each measurement, so as to improve the consistency of the test results, thereby improving the reliability of the battery crimping device and the battery internal resistance test tooling.

[0057] Continue reading Figure 1 and Figure 2 The battery crimping device provided in one embodiment of the present application further includes: a lifting structure plate 4, which is respectively connected to the driving module 3 and the pressing module 2, and is used to drive the pressing module 2 to move under the drive of the driving module 3.

[0058] In one possible embodiment, the drive module 3 includes a first cylinder 31 and a second cylinder 32. The first cylinder 31 is disposed on one side of the platform 1, with a first end of the first cylinder 31 fixedly connected to the operating table 81 and a second end connected to the lifting structure plate 4. The second cylinder 32 is disposed on the other side of the platform 1, opposite the first cylinder 31. The first cylinder 31 and the second cylinder 32 synchronously drive the lifting structure plate 4 to rise or fall, thereby driving the holding module 2 connected to the lifting structure plate 4 to rise or fall.

[0059] Optionally, both the first cylinder 31 and the second cylinder 32 are SC40×40S cylinders, that is, single-acting cylinders with a cylinder diameter of 40 mm and a stroke of 40 mm.

[0060] In a possible embodiment, the battery crimping device also includes: guide columns 5, which are respectively arranged at the four corners of the lifting structure plate 4, and the guide columns 5 are connected to the lifting structure plate 4 through a straight flange. The lifting structure plate 4 can rise or fall along the guide columns 5 under the drive of the driving module 3.

[0061] In one possible embodiment, the probe mounting plate 22 is connected to the lifting structure plate 4 and the pressure plate 21 respectively for mounting the test probe. Specifically, the probe mounting plate 22 is connected to the pressure plate 21 via a buffer shaft 23, and the buffer shaft 23 and the probe mounting plate 22 are fixedly connected via a flange linear bearing 24 and a gasket 25. Optionally, the holding module 2 also includes an adjustment fixing plate 26, which is connected to the probe mounting plate 22 via a rib plate 27 and is connected to the third waist-shaped hole at the corresponding position of the lifting structure plate 4, so that the holding module 2 can move relative to the lifting structure plate 4.

[0062] Figure 5 A schematic diagram showing the position of the loading position in one embodiment of the present application is shown; Figure 6 FIG1 shows a schematic diagram of the position of the test bit in an embodiment of the present application. Figures 1 to 6 The battery crimping device provided in one embodiment of the present application further includes: a substrate 6, which is arranged at the bottom of the carrier 1; position limit blocks 62, which are arranged on both sides of the substrate 6; wherein the carrier 1 moves on the substrate 6, and when the carrier 1 approaches the position limit block 62 located on the first side of the substrate 6, the carrier 1 is in the loading position, such as Figure 5 When the carrier 1 is close to the position limit block 62 located on the second side of the substrate 6, the carrier 1 is in the test position, as shown Figure 6 shown.

[0063] In a possible embodiment, the battery crimping device further includes: a slide rail 61, which is arranged at the bottom of the carrier 1 and is used to support the carrier 1 to switch between the loading position and the test position. Optionally, the slide rail 61 may include a linear guide rail and a slider, the slider being installed on the guide rail, and the top of the slider abutting against the bottom of the carrier 1. Optionally, in combination with the above embodiment, a push-pull handle 15 is installed at the bottom of the battery cell base plate 11, and the carrier 1 is pulled along the slide rail 61 by the push-pull handle 15 to slide until the battery cell base plate 11 abuts against the position limit block 62 and reaches the loading position. The operator can place the battery to be tested in the accommodating area at the loading position; and the carrier 1 is pushed along the slide rail 61 by the push-pull handle 15 to slide until the battery cell base plate 11 abuts against the position limit block 62 at the other end of the slide rail 61 and reaches the test position. The operator can test the battery to be tested at the test position. Optionally, there are two groups of slide rails 61, which are arranged on both sides of the battery cell base plate 11.

[0064] In one possible implementation, in combination with the above embodiment, the first end of the first cylinder 31 is fixedly mounted on the base plate 6 via a cylinder base plate 33, and the second end is connected to the lifting structure plate 4 via a cooperating cylinder fixing block 34 and fixing block clip 35. The configuration of the second cylinder 32 is similar to that of the first cylinder 31. The bottom end of the guide column 5 is fixedly mounted on the base plate 6.

[0065] In a possible embodiment, the battery crimping device further includes a pad 63 , which is disposed on the substrate 6 and outside the slide rail 61 to improve the stability of the carrier 1 during movement.

[0066] In one possible embodiment, the battery crimping device further includes a micro-motion limiter 64, which is provided on the substrate 6 and is used to limit the position of the carrier 1. The micro-motion limiter 64 is provided on the side of the substrate 6 opposite to the push-pull handle 15. In the process of the carrier 1 moving from the loading position to the test position, the carrier 1 touches the micro-motion limiter 64, and the micro-motion limiter 64 limits the carrier 1 so that the carrier 1 stops at the test position. Optionally, the micro-motion limiter 64 is connected to the test controller, and the carrier 1 triggers the micro-motion limiter 64. The micro-motion limiter 64 generates a trigger signal and transmits it to the test controller, so that the test controller performs a test operation based on the trigger signal.

[0067] In this embodiment, the carrier 1 can move stably between the loading position and the testing position through the slide rail 61, and the moving position of the carrier 1 is limited by the position limit block 62 and the micro-motion limit member 64, thereby improving the flexibility of the battery crimping device while ensuring the overall stability of the battery crimping device.

[0068] Continue reading Figure 1 and Figure 2The battery crimping device provided in one embodiment of the present application further includes: an identifier for identifying information of the battery to be tested; an identification support assembly 7 connected to the identifier and to the lifting structure plate 4.

[0069] In one possible embodiment, the identification support assembly 7 includes: a top plate 71, which is fixedly connected to the lifting structure plate 4; an adjusting rod 72, the first end of the adjusting rod 72 is connected to the top plate 71 through a matching identification fixing block 73 and an identification adjustment plate 74, and the second end of the adjusting rod 72 is connected to the lifting structure plate 4 through a limit screw 75.

[0070] Among them, the identification and fixing block 73 includes a through hole, an upper limit hole, and a lower fixing hole for the adjustment rod 72 to pass through; the identification and adjustment plate 74 is provided with a protrusion on the side close to the top plate 71 for clamping and fixing with the top plate 71, and the identification and adjustment plate 74 is provided with multiple adjustment holes on the side close to the adjustment rod 72. Optionally, the upper limit hole is a waist-shaped hole, and the upper limit hole is connected to the adjustment holes at different positions on the identification and adjustment plate 74 by screws, thereby adjusting the height of the first end of the adjustment rod 72. Optionally, the first end of the limit screw 75 is screwed to the second end of the adjustment rod 72, and the second end of the limit screw 75 is passed through the lifting structure plate 4 and is connected to the nut, thereby adjusting the height of the second end of the adjustment rod 72.

[0071] Optionally, the identifier is movably arranged on one side of the second end of the adjusting rod 72 close to the center of the platform 1. Figure 1 In the perspective of FIG, the adjustment rod 72 is arranged on the left side of the battery crimping device, and the identifier can be arranged on the right side of the limit screw 75. Optionally, the identifier can be a barcode scanner, which is used to scan and identify the identification corresponding to the battery to be tested to obtain the identification information of the battery to be tested, thereby facilitating the matching of the identification of the battery to be tested with the test data, thereby improving test efficiency.

[0072] See Figures 1 to 6 , a battery crimping device provided in one embodiment of the present application includes:

[0073] The platform 1 is used to accommodate the battery under test. The platform 1 includes a cell base plate 11 for supporting the battery cell under test; cell retaining plates 12 disposed on opposite sides of the cell base plate 11; and tab retaining plates 13 disposed on the other two sides of the cell base plate 11 for supporting the tabs of the battery under test. The cell retaining plates 12 are provided with a first waist-shaped hole 121, the tab retaining plates 13 are provided with a second waist-shaped hole 132, and the cell base plate 11 is provided with retaining holes corresponding to the first waist-shaped hole 121 and the second waist-shaped hole 132.

[0074] The pressing module 2 includes a detachable pressing plate 21, which is used to connect to the test probe through an elastic member. The pressing module 2 also includes: a probe mounting plate 22, which has a mounting hole for cooperating with the elastic member and connecting to the test probe.

[0075] The driving module 3 is connected to the pressing module 2 and is used to drive the pressing module 2 to switch between a pressing state in which the pressing module is pressed against the tab and a separation state away from the tab.

[0076] The lifting structure plate 4 is connected to the driving module 3 and the pressing module 2 respectively, and is used to drive the pressing module 2 to move under the drive of the driving module 3.

[0077] The substrate 6 is arranged at the bottom of the carrier 1; the position limit blocks 62 are arranged on both sides of the substrate 6; wherein, the carrier 1 moves on the substrate 6, when the carrier 1 approaches the position limit block 62 located on the first side of the substrate 6, the carrier 1 is in the loading position; when the carrier 1 approaches the position limit block 62 located on the second side of the substrate 6, the carrier 1 is in the testing position.

[0078] The slide rail 61 is provided at the bottom of the carrier 1 and is used to support the carrier 1 to switch between the loading position and the testing position.

[0079] The fine motion limiter 64 is provided on the base plate 6 and is used to limit the position of the carrier 1 .

[0080] The identifier is used to identify the information of the battery to be tested; the identification support component 7 is connected to the identifier and connected to the lifting structure plate 4.

[0081] Figure 7 The figure shows a schematic diagram of the structure of a battery internal resistance test tool in one embodiment of the present application. Figure 7 As shown, the battery internal resistance testing tool provided in one embodiment of the present application includes the battery crimping device provided in the above embodiment, and a test probe, which is connected to the pressing module 2 in the battery crimping device for testing the battery to be tested.

[0082] In a possible embodiment, the battery internal resistance test tool includes: an operating table 81 for placing a battery crimping device; an operating table bracket 82 fixedly connected to the operating table 81; and a composite caster 83 provided at the bottom of the operating table bracket 82.

[0083] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery crimping device, characterized in that: The battery crimping device comprises: A carrier, used to accommodate the battery to be tested; A pressing module, comprising a detachable pressing plate, wherein the pressing module is used to connect with the test probe via an elastic member; The driving module is connected to the pressing module and is used to drive the pressing module to switch between a pressing state in which the pressing module is pressed against the tab of the battery to be tested and a separation state away from the tab.

2. The battery crimping device according to claim 1, characterized in that: The pressing module further includes a probe mounting plate, on which a mounting hole is formed. The mounting hole is used to cooperate with the elastic member and to be connected to the test probe.

3. The battery crimping device according to claim 1, characterized in that: The carrier comprises: A cell base plate, used for supporting the cell of the battery to be tested; Battery cell limiting plates, arranged on two opposite sides of the battery cell bottom plate; Tab limiting plates are arranged on the other two sides of the battery cell bottom plate and are used to support the tabs of the battery to be tested.

4. The battery crimping device according to claim 3, characterized in that: A first waist-shaped hole is provided on the battery cell limiting plate, a second waist-shaped hole is provided on the tab limiting plate, and limiting holes corresponding to the first waist-shaped hole and the second waist-shaped hole are provided on the battery cell bottom plate.

5. The battery crimping device according to claim 1, characterized in that: The battery crimping device further includes: a lifting structure plate, which is connected to the driving module and the pressing module respectively, and is used to drive the pressing module to move under the drive of the driving module.

6. The battery crimping device according to claim 1, characterized in that: The battery crimping device further comprises: A substrate is arranged at the bottom of the carrier; Position limiting blocks are arranged on both sides of the substrate; Wherein, the carrier moves on the substrate, and when the carrier approaches the position limit block located on the first side of the substrate, the carrier is in the loading position; when the carrier approaches the position limit block located on the second side of the substrate, the carrier is in the testing position.

7. The battery crimping device according to claim 6, characterized in that: The battery crimping device further includes a slide rail disposed at the bottom of the carrier and configured to support the carrier to switch between the loading position and the testing position.

8. The battery crimping device according to claim 7, characterized in that: The battery crimping device further includes a fine-motion limiter, which is provided on the substrate and is used to limit the position of the carrier.

9. The battery crimping device according to claim 5, characterized in that: The battery crimping device further comprises: An identifier, used to identify information of the battery to be tested; The identification support assembly is connected with the identifier and the lifting structure plate.

10. A battery internal resistance test tool, characterized in that: The battery internal resistance testing tool comprises the battery crimping device according to any one of claims 1 to 9, and the battery internal resistance testing tool further comprises: The test probe is connected to the pressing module in the battery pressing device and is used to test the battery to be tested.

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