Tab-free battery cell test tool

Abstract

The utility model provides a tab-free battery cell test tool, which comprises an object placing table and a clamping mechanism for clamping a battery on the object placing table, two sides of the clamping mechanism are connected with a conductive mechanism through a telescopic mechanism, the conductive mechanism can be connected with a battery tab, and the distance between the conductive mechanism and the battery can be adjusted through the telescopic mechanism. According to the utility model, the tabs of the battery can be contacted through the plurality of spring contact pins connected through the connecting lugs, and the spring contact pins can be suitable for contact connection of the tabs of the batteries in different shapes, so that the link area of the tabs of the batteries can meet the requirement, and the risk of overlarge discharge current of the batteries is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric core test, especially to a no tab electric core test tool. BACKGROUND

[0002] In recent years, the lithium battery industry in China has developed rapidly and has been gradually applied in consumer electronics, new energy vehicles, power tools and energy storage devices and other fields. With the continuous expansion of application fields, the product system is increasingly complete, and the product quality level continues to improve. At the same time, the rapid development of the Internet and smart cities has driven the continuous expansion of the market size of China's lithium battery.

[0003] In the field of batteries, in order to improve the energy density of the battery and reduce the volume of the battery, two camps of cylindrical batteries and square batteries appear in the early stage of the battery. The battery needs to be tested for performance and safety before it is shipped. After testing, the battery is installed in the vehicle for use. With the increase of the number of new energy vehicles, new energy vehicles may encounter problems of battery aging or damage. Therefore, the battery needs to be returned to the factory for disassembly and repair. The battery needs to be disassembled and tested. After the battery is disassembled, the tab of the old battery needs to be de-soldered. The old battery needs to be tested by testing equipment. The surface of the tab of the old battery may have a bend or a pit, resulting in a non-uniform tab contact area or a contact area less than the standard area, which may cause the current passing through the tab per unit area to increase during the tab power-on process, causing the tab to heat or burn, and making testing inconvenient. UTILITARIAN CONTENT

[0004] The technical problem to be solved by the utility model is to provide a no tab electric core test tool to solve the problem of inconvenient old battery testing.

[0005] Based on the technical problems in the background art, the utility model provides a no tab electric core test tool, which includes a storage table and a clamping mechanism for clamping the battery on the storage table. The clamping mechanism is connected to the conductive mechanism connected to the battery tab through the extension mechanism on both sides. The conductive mechanism can adjust the distance between the battery through the extension mechanism. In this scheme, the battery can be clamped by the clamping mechanism, and the distance between the conductive mechanism and the battery can be adjusted by the lifting mechanism, so that the conductive mechanism can be connected with the tab of the battery.

[0006] Preferably, one end of the telescopic mechanism is connected to the upper surface of the placement table and makes the telescopic mechanism stand, and the conductive mechanism is rotatably installed at the end of the telescopic mechanism away from the placement table. In this scheme, the telescopic mechanism can be a pneumatic cylinder or a manual adjusting mechanism, and in this application, it is a manual adjusting mechanism. The conductive mechanism is installed at the end of the telescopic mechanism away from the placement table, which can lengthen the distance between the conductive mechanism and the placement table, increase the adjusting stroke between the conductive mechanism and the placement table, and be suitable for batteries of different sizes.

[0007] Preferably, the conductive mechanism comprises a metal sheet and a connecting lug, the middle part of the metal sheet is fixed to the end of the telescopic mechanism away from the placement table through a first handle bolt, and the connecting lug is connected to the end of the metal sheet close to the battery and faces the battery. The metal sheet in this scheme can rotate to change the position of the connecting lug to adapt to the connection of different battery tabs, and the connecting lug is used to abut against the tab of the battery for conduction.

[0008] Preferably, the connecting lug is connected to a plurality of spring contact pins on the side facing the battery. In this scheme, the battery spring contact pin can cope with the pits and bumps of the battery tab, ensure that the connection area between the connecting lug and the tab will not decrease, prevent the current from being too large when the connecting lug conducts electricity, and increase safety and practicability.

[0009] Preferably, the middle part of the metal sheet is provided with a strip-shaped groove, and the first handle bolt is connected to the telescopic mechanism through the strip-shaped groove. The strip-shaped groove of the metal sheet in this scheme can make the metal sheet horizontally translate, change the position of the connecting lug on the metal sheet, and cope with the connection of different battery tabs.

[0010] Preferably, the surface of the placement table is provided with a guide rail, and the two clamping mechanisms are slidingly installed on the guide rail. The clamping mechanism has mounting lugs on both sides, and the mounting lugs are screwed into the abutting grooves of the placement table through the second handle bolts. In this scheme, after the two clamping mechanisms slide on the placement table, the second handle bolts are screwed to abut against the upper surface of the placement table to lock and fix, thereby limiting the positions of the two clamping mechanisms to clamp and position the battery.

[0011] Compared with the prior art, the no-tab battery cell test tool adopts the above technical scheme, and has the following technical effects:

[0012] The plurality of spring contact pins connected by the connecting lug of the utility model can contact the tab of the battery. In the utility model, the spring contact pin can be used for contacting and connecting different shapes of battery tabs, can make the connection area of the battery tab meet the requirements, and avoids the risk of excessive discharge current of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0014] Figure 2 It is the schematic view of the conductive mechanism of the embodiment one of the utility model;

[0015] Figure 3 It is the schematic view of the conductive mechanism of the embodiment two of the utility model.

[0016] In the drawing: 1, the article table; 2, clamping mechanism; 3, telescopic mechanism; 4, conductive mechanism; 41, metal sheet; 42, connecting lug; 43, first handle bolt; 421, spring contact pin; 411, strip slot; 11, guide rail; 21, mounting lug; 22, second handle bolt; 12, abutting slot. DETAILED DESCRIPTION

[0017] In the utility model, unless another explicit provision and limitation, the terms "mount", "connect", "link", "fix" and so on should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrated;Can be mechanical connection, also can be electric connection or each other can communicate;It can be directly connected, also can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction of two elements, unless another explicit limitation.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0018] In the utility model, unless another explicit provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium.Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature.The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0019] Embodiment one

[0020] Please refer to Figures 1-2 The utility model proposes a kind of pole lugless battery testing tool, including a kind of pole lugless battery testing tool, including article table 1 and the clamping mechanism 2 of battery clamping on article table 1, in the present scheme, clamping mechanism 2 has two, and it clamps the two sides of battery respectively, vertically telescopic mechanism 3 is arranged on the two sides of clamping mechanism 2, telescopic mechanism 3 in the present application is manual, the top of two telescopic mechanisms 3 is connected with one conductive mechanism 4 respectively, one conductive mechanism 4 can correspond to the pole lug connection of one battery, conductive mechanism 4 can be rotated and adjusted position at the top of telescopic mechanism 3, telescopic mechanism 3 can change the distance between conductive mechanism 4 and article table 1 to facilitate connecting lug 42 contact the pole lug of battery.

[0021] In specific embodiments, referring to Figure 1 , Figure 2 , the conductive mechanism 4 includes a metal sheet 41 and a connecting lug 42, wherein the middle part of the metal sheet 41 is rotationally connected to the top end of the telescopic mechanism 3, the connecting lug 42 is installed on one end of the metal sheet 41, and the connecting lug 42 is also installed on the side of the metal sheet 41 facing the battery. The metal sheet 41 can directly contact the tab of the battery after lifting, and multiple spring contact pins 421 are connected to the side of the connecting lug 42 facing the battery. The spring contact pins 421 are elastic, and the thickness of each spring contact pin 421 is the same. When the spring contact pins 421 contact the tab of the battery, they can respond to the deformation of the tab and contact the bumps on the tab. The number of spring contact pins 421 in contact with the tab does not change, and the total thickness of the spring contact pins 421 in contact with the tab remains unchanged. In this case, it can be ensured that the current on the contact surface between the conductive mechanism 4 and the tab will not be too large, ensuring safety.

[0022] In specific embodiments, referring to Figure 1 , Figure 2 , the middle part of the metal sheet 41 is provided with a strip-shaped groove 411. When the electrode of the battery is relatively close, the metal sheet 41 can change the position of the metal sheet 41 relative to the lifting mechanism by the strip-shaped groove 411. The first handle bolt 43 passes through the strip-shaped groove 411 and is connected to the telescopic mechanism 3 to lock the metal sheet 41. At this time, the metal sheet 41 can expand the contact range of the battery electrode and increase the applicability.

[0023] In specific embodiments, referring to Figure 1 , Figure 2 , the surface of the storage table 1 is provided with a guide rail 11, and the bottom of each clamping mechanism 2 is provided with a sliding groove corresponding to the cross-sectional shape of the guide rail 11. The two clamping mechanisms 2 are slidingly installed on the guide rail 11 through the sliding grooves. The clamping mechanism 2 has mounting ears 21 on both sides. When the clamping mechanism 2 is slid to the appropriate position on the storage table 1, the mounting ears 21 can be rotated and locked in the contact groove 12 provided on the upper surface of the storage table 1 through the second handle bolt 22 to lock the clamping mechanism 2 and limit the position of the clamping mechanism 2 on the storage table 1, thereby clamping and fixing the battery.

[0024] Embodiment two

[0025] In further embodiments, referring to Figure 3 , the connecting lug 41 is connected to the end of the metal sheet 41, and multiple spring contact pins 421 are connected to the connecting lug 42. The direction of the spring contact pins 421 is parallel to the direction of the metal sheet 41 sliding along the strip-shaped groove 411.

[0026] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A tabless battery cell testing fixture, comprising a stage (1) and a clamping mechanism (2) for clamping the battery on the stage (1), characterized in that, The clamping mechanism (2) is connected to a conductive mechanism (4) that can be connected to the battery tabs via a telescopic mechanism (3) on both sides. The conductive mechanism (4) can adjust the distance between itself and the battery via the telescopic mechanism (3).

2. The tabless cell testing fixture according to claim 1, characterized in that, One end of the telescopic mechanism (3) is connected to the upper surface of the shelf (1) and makes the telescopic mechanism (3) stand upright. The conductive mechanism (4) is rotatably installed at the end of the telescopic mechanism (3) away from the shelf (1).

3. The tabless cell testing fixture according to claim 1, characterized in that, The conductive mechanism (4) includes a metal sheet (41) and a connecting ear (42). The middle part of the metal sheet (41) is fixed to the end of the telescopic mechanism (3) away from the shelf (1) by a first handle bolt (43). The connecting ear (42) is connected to the end of the metal sheet (41) near the battery and faces the battery.

4. The tabless cell testing fixture according to claim 3, characterized in that, The connecting ear (42) facing the battery is connected to a plurality of spring contact pins (421).

5. The tabless cell testing fixture according to claim 3, characterized in that, The metal sheet (41) has a groove (411) in the middle, and the first handle bolt (43) passes through the groove (411) and is connected to the telescopic mechanism (3).

6. The tabless cell testing fixture according to claim 1, characterized in that, The surface of the shelf (1) is provided with a guide rail (11), and two clamping mechanisms (2) are slidably mounted on the guide rail (11). The clamping mechanisms (2) have mounting ears (21) on both sides. The mounting ears (21) are screwed into the abutment groove (12) of the shelf (1) by the mounting second handle bolt (22).

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