Tool clamp for charging and discharging test of cylindrical battery cells of various specifications

Abstract

The utility model discloses a work fixture for charging and discharging tests of cylindrical battery cells of various specifications, and belongs to the technical field of battery cell charging and discharging tests. The device mainly comprises a bottom plate, a centering mechanism, a height adjusting mechanism and a charging and discharging mechanism, the centering mechanism is installed on one side of the bottom plate, the height adjusting mechanism is installed at the position adjacent to the centering mechanism, and a plurality of cable fixing blocks arranged in parallel are installed on the height adjusting mechanism; the charging and discharging mechanism is installed on one side of the height adjusting mechanism and is adjacent to the cable fixing block. Wherein the charging and discharging mechanism comprises a clamping assembly and a battery cell charging and discharging assembly, and the clamping assembly and the battery cell charging and discharging assembly are connected in a matched mode and located on the same straight line with the centering mechanism. According to the utility model, the test cell is convenient to clamp, fix and disassemble through a simple tool structure, the tedious process of welding the pole piece of the large-current charge-discharge test cell is solved by adopting the matching of the calipers, and the cell is not damaged. The device is mainly used for the charging and discharging test of the battery cell.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell charge and discharge testing technology, and more specifically, it relates to a tooling fixture for charging and discharging testing of cylindrical battery cells of various specifications. Background Technology

[0002] Existing battery cell charging and discharging test connection methods include electrode welding and fixture connection. However, fixture connection is designed for low-current charging and discharging. High-current charging and discharging tests mainly use electrode welding, which involves welding two aluminum electrodes to the positive and negative terminals respectively, and then connecting them to the charging and discharging equipment using test cables. However, this can cause irreversible damage to the battery cell. Moreover, there are many types of cylindrical battery cells on the market, with different diameters and heights. Based on these reasons, this fixture was developed and designed to be suitable for high-current charging and discharging of various battery cell specifications. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications. The fixture facilitates the clamping, fixing and disassembling of the test battery cells through a simple tooling structure. It uses calipers to solve the cumbersome process of welding the electrode plates of the battery cells for high-current charging and discharging tests without causing any damage to the battery cells.

[0004] The aforementioned fixture for charging and discharging tests of cylindrical battery cells of various specifications includes a base plate, a centering mechanism, a height adjustment mechanism, and a charging and discharging mechanism. The centering mechanism is installed on one side of the base plate, and the height adjustment mechanism is installed adjacent to it, with multiple parallel cable fixing blocks installed on the height adjustment mechanism. The charging and discharging mechanism is installed on one side of the height adjustment mechanism, adjacent to the cable fixing blocks. The charging and discharging mechanism includes a clamping assembly and a battery cell charging and discharging assembly, which are adapted and connected, and are on the same straight line as the centering mechanism.

[0005] Preferably, the clamping assembly comprises a clamp fixing seat, a guide seat, a connecting plate, and a clamp. One end of the guide seat is connected to the side wall of the height adjustment mechanism, and the other end is movably connected to the clamp fixing seat. The clamp is installed on the end of the clamp fixing seat facing away from the guide seat and is movably connected to the guide seat. A guide rod is installed on the end of the guide seat facing away from the clamp, and a connecting plate is installed on the end of the guide rod away from the guide seat.

[0006] Preferably, a sliding protrusion is fixed on the side wall where the guide seat connects to the clamp fixing seat; a limiting groove is drilled on the side wall of the clamp fixing seat, and the limiting groove is slidably connected to the sliding protrusion.

[0007] Preferably, the battery cell charging and discharging assembly includes a pin connector, a positive terminal, and a negative terminal. The pin connector has a hollowed-out groove, and the positive terminal is fixed in the hollowed-out groove. Multiple negative terminals are provided, also fixed in the hollowed-out groove, and arranged adjacent to the positive terminal. The positive and negative terminals both protrude to the other end of the pin connector.

[0008] Preferably, the cable fixing block includes an adjusting slide and a pressure plate, the adjusting slide is slidably connected to the adjusting mechanism, and an adjustable pressure plate is installed on the side facing away from the adjusting mechanism.

[0009] Preferably, the height adjustment mechanism includes a column and legs. Multiple legs are provided and are fixed on the side wall of the column facing the base plate, and the legs are fixedly connected to the base plate. The side wall of the column is provided with multiple adjustment grooves for connecting the clamping assembly and the cable fixing block.

[0010] Preferably, there are multiple centering mechanisms located directly below the battery cell charging and discharging assembly, and the multiple centering mechanisms are arranged in a triangular pattern and fixedly connected to the base plate.

[0011] Preferably, the centering mechanism consists of a guide plate, a clamping plate, and fastening bolts. The guide plate is fixedly connected to the base plate and has a through groove inside. The clamping plate is embedded in the through groove and is slidably connected to the guide plate. The fastening bolts are installed on the side of the guide plate facing away from the clamping plate and protrude into the through groove.

[0012] Preferably, it also includes a battery cell body, placed on one side of the base plate, located in the center of the centering mechanism, and on the same straight line as the battery cell charging and discharging assembly.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The simple tooling structure facilitates the clamping, fixing, and disassembly of the test cells. The use of calipers solves the cumbersome process of welding the electrode plates of the high-current charge and discharge test cells without causing any damage to the cells. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the clamping assembly structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the battery cell charging and discharging assembly of this utility model.

[0019] In the diagram, 100 is the base plate; 200 is the centering mechanism; 201 is the guide plate; 202 is the clamping plate; 203 is the fastening bolt; 300 is the height adjustment mechanism; 301 is the column; 302 is the support leg; 303 is the adjustment groove; 310 is the cable fixing block; 311 is the adjusting slide; 312 is the pressure plate; 400 is the charging and discharging mechanism; 410 is the clamping assembly; 411 is the clamp fixing seat; 4111 is the limiting slide groove; 412 is the guide seat; 4121 is the sliding contact; 413 is the connecting plate; 414 is the clamp; 415 is the guide rod; 420 is the battery cell charging and discharging assembly; 421 is the ejector pin connecting seat; 4211 is the hollow groove; 422 is the positive terminal; 423 is the negative terminal; and 500 is the battery cell body. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] like Figure 1 As shown, a tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications includes a base plate 100, a centering mechanism 200, a height adjustment mechanism 300, and a charging and discharging mechanism 400. The centering mechanism 200 is installed on one side of the base plate 100, and the height adjustment mechanism 300 is installed adjacent to it. Multiple parallel cable fixing blocks 310 are installed on the height adjustment mechanism 300. The charging and discharging mechanism 400 is installed on one side of the height adjustment mechanism 300 and is adjacent to the cable fixing blocks 310. The charging and discharging mechanism 400 includes a clamping assembly 410 and a battery cell charging and discharging assembly 420, which are adapted to each other and are on the same straight line as the centering mechanism 200.

[0023] Optionally, it also includes a battery cell body 500, which is placed on one side of the base plate 100, located in the middle of the centering mechanism 200, and is on the same straight line as the battery cell charging and discharging assembly 420.

[0024] For example, before using this device, adjust the charging / discharging mechanism 400 and the cable fixing block 310 to appropriate positions, and release the centering mechanism 200. Place the battery cell body 500 inside the centering mechanism 200, and adjust the centering mechanism 200 so that the battery cell body 500 and the battery cell charging / discharging assembly 420 are aligned. By operating the clamping assembly 410, it applies downward pressure to bring the battery cell charging / discharging assembly 420 into contact with the battery cell body 500, performing a charging or discharging action. After completing the charging or discharging test of the battery cell body 500, release the clamping assembly 410, which causes the charging / discharging mechanism 400 to reset, disengaging the charging / discharging mechanism 400 from the battery cell body 500. Then release the centering mechanism 200, separating it from the battery cell body 500, and replace the battery cell body 500 for the next test.

[0025] like Figure 2 and Figure 3 As shown, the clamping assembly 410 comprises a clamp fixing seat 411, a guide seat 412, a connecting plate 413, and a clamp 414. One end of the guide seat 412 is connected to the side wall of the height adjustment mechanism 300, and the other end is movably connected to the clamp fixing seat 411. The clamp 414 is mounted on the end of the clamp fixing seat 411 facing away from the guide seat 412 and is movably connected to the guide seat 412. A guide rod 415 is mounted on the end of the guide seat 412 facing away from the clamp 414, and the connecting plate 413 is mounted on the end of the guide rod 415 away from the guide seat 412. Thus, since the clamp 414, the clamp fixing seat 411, and the connecting plate 413 are a linked structure, when the clamp 414 is rotated or pressed down, the clamp 414 will drive the clamp fixing seat 411 and the connecting plate 413 to move synchronously downward or upward. At the same time, it also drives the cell charging and discharging assembly 420, which is fixedly connected to the connecting plate 413, to move upward or downward.

[0026] like Figure 3 As shown, a sliding protrusion 4121 is fixed on the side wall where the guide seat 412 connects to the clamp fixing seat 411; a limiting groove 4111 is drilled on the side wall of the clamp fixing seat 411, and the limiting groove 4111 is slidably connected to the sliding protrusion 4121. In this way, through the cooperation of the sliding protrusion 4121 and the limiting groove 4111, the clamp fixing seat 411 can have a certain amount of displacement while being less likely to disengage from the guide seat 412 due to excessive displacement, thus improving the operational stability of the clamping assembly 410.

[0027] like Figure 2 and Figure 4As shown, the battery cell charging and discharging assembly 420 includes a pin connector 421, a positive terminal 422, and a negative terminal 423. The pin connector 421 has a hollowed-out groove 4211, within which the positive terminal 422 is fixed. Multiple negative terminals 423 are also fixed within the hollowed-out groove 4211 and are arranged adjacent to the positive terminal 422. Both the positive terminal 422 and the negative terminal 423 protrude to the other end of the pin connector 421. This design, with the positive terminal 422 and the negative terminal 423 protruding from one end of the pin connector 421 to the other, allows for differentiation between the cable connection end and the battery cell body 500 connection end, preventing short circuits and effectively improving safety. Meanwhile, the ejector pin connector 421 adopts a hollow groove 4211 design, which can improve ventilation capacity so that the heat generated by the battery cell charging and discharging assembly 420 during operation can be discharged in time, avoiding danger due to high temperature, and further improving the operational safety of the battery cell charging and discharging assembly 420.

[0028] like Figure 2 As shown, the cable fixing block 310 includes an adjusting slide 311 and a pressure plate 312. The adjusting slide is slidably connected to the adjusting mechanism, and an adjustable pressure plate 312 is installed on the side facing away from the adjusting mechanism. In this way, the cable can be fixedly connected to the adjusting slide 311 through the pressure plate 312, so that the cable can maintain an appropriate height and distance from the charging and discharging mechanism 400, and at the same time, it can ensure that the cable is in a stable state, thereby improving the overall stability of the equipment.

[0029] like Figure 2 As shown, the height adjustment mechanism 300 includes a column 301 and support legs 302. Multiple support legs 302 are provided and fixed to the side wall of the column 301 facing the base plate 100, and the support legs 302 are fixedly connected to the base plate 100. The side wall of the column 301 has multiple adjustment grooves 303 for connecting the clamping assembly 410 and the cable fixing block 310. In this way, the column 301 is connected to the base plate 100 via the support legs 302, ensuring the working stability of the column 301. Simultaneously, the adjustment grooves 303 on its side wall allow for flexible adjustment of the clamping assembly 410 and / or the cable fixing block 310, enabling height adjustment according to actual usage conditions for stable testing.

[0030] like Figure 1 and Figure 2As shown, multiple alignment mechanisms 200 are provided, located directly below the battery cell charging / discharging assembly 420, and arranged in a triangular pattern, fixedly connected to the base plate 100. This triangular arrangement of the alignment mechanisms 200 allows for quick and precise alignment of the battery cell body 500 within a small space, ensuring that the battery cell body 500 is aligned with the battery cell charging / discharging assembly 420 before testing, guaranteeing accurate docking between them. Furthermore, the triangular alignment mechanisms 200 effectively fix the battery cell body 500, preventing it from shifting or detaching during docking or testing, thus improving both the stability and safety of the battery cell body 500 during testing.

[0031] like Figure 2 As shown, the centering mechanism 200 consists of a guide plate 201, a clamping plate 202, and a fastening bolt 203. The guide plate 201 is fixedly connected to the base plate 100 and has a through groove inside. The clamping plate 202 is embedded in the through groove and is slidably connected to the guide plate 201. The fastening bolt 203 is installed on the side of the guide plate 201 facing away from the clamping plate 202, and the fastening bolt 203 protrudes into the through groove. In this way, the adjustable clamping plate 202 allows for flexible adjustment of its extension length according to the specifications of the battery cell body 500 to be tested, and the clamping plate 202 is fixed by the fastening bolt 203 to improve the clamping stability of the clamping plate 202.

[0032] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for charging and discharging tests of cylindrical battery cells of various specifications, comprising a base plate (100), a centering mechanism (200), a height adjustment mechanism (300), and a charging and discharging mechanism (400), characterized in that: The centering mechanism (200) is installed on one side of the base plate (100), and a height adjustment mechanism (300) is installed adjacent to it. Multiple parallel cable fixing blocks (310) are installed on the height adjustment mechanism (300). The charging and discharging mechanism (400) is installed on one side of the height adjustment mechanism (300) and adjacent to the cable fixing block (310). The charging and discharging mechanism (400) includes a clamping assembly (410) and a battery cell charging and discharging assembly (420), which are adapted to each other and are on the same straight line as the centering mechanism (200).

2. The tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to claim 1, characterized in that: The clamping assembly (410) comprises a clamp fixing seat (411), a guide seat (412), a connecting plate (413), and a clamp (414). One end of the guide seat (412) is connected to the side wall of the height adjustment mechanism (300), and the other end is movably connected to the clamp fixing seat (411). The clamp (414) is installed on the end of the clamp fixing seat (411) facing away from the guide seat (412) and is movably connected to the guide seat (412). A guide rod (415) is installed on the end of the guide seat (412) facing away from the clamp (414), and a connecting plate (413) is installed on the end of the guide rod (415) away from the guide seat (412).

3. The tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to claim 2, characterized in that: A sliding protrusion (4121) is fixed on the side wall where the guide seat (412) connects to the clamp fixing seat (411); a limiting groove (4111) is drilled on the side wall of the clamp fixing seat (411), and the limiting groove (4111) is slidably connected to the sliding protrusion (4121).

4. The tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to claim 1, characterized in that: The battery cell charging and discharging assembly (420) includes a pin connector (421), a positive terminal (422), and a negative terminal (423). The pin connector (421) has a hollowed-out groove (4211) inside, and the positive terminal (422) is fixed in the hollowed-out groove (4211). There are multiple negative terminals (423), which are also fixed in the hollowed-out groove (4211) and are arranged adjacent to the positive terminal (422). The positive terminal (422) and the negative terminal (423) both protrude to the other end of the pin connector (421).

5. A tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to claim 1, characterized in that: The cable fixing block (310) includes an adjusting slide (311) and a pressure plate (312). The adjusting slide (311) is slidably connected to the height adjustment mechanism (300), and an adjustable pressure plate (312) is installed on the side facing away from the height adjustment mechanism (300).

6. A tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to claim 1, characterized in that: The height adjustment mechanism (300) includes a column (301) and legs (302). There are multiple legs (302), which are fixed on the side wall of the column (301) facing the base plate (100) and are fixedly connected to the base plate (100). The side wall of the column (301) is provided with multiple adjustment grooves (303) for connecting the clamping assembly (410) and the cable fixing block (310).

7. A tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to claim 1, characterized in that: Multiple centering mechanisms (200) are provided, located directly below the battery cell charging and discharging assembly (420), and the multiple centering mechanisms (200) are arranged in a triangular pattern and fixedly connected to the base plate (100).

8. A tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to claim 7, characterized in that: The centering mechanism (200) consists of a guide plate (201), a clamping plate (202), and a fastening bolt (203). The guide plate (201) is fixedly connected to the base plate (100) and has a through groove inside. The clamping plate (202) is embedded in the through groove and is slidably connected to the guide plate (201). The fastening bolt (203) is installed on the side of the guide plate (201) facing away from the clamping plate (202) and protrudes into the through groove.

9. A tooling fixture for charging and discharging tests of cylindrical battery cells of various specifications according to any one of claims 1 to 8, characterized in that: It also includes the battery cell body (500), which is placed on one side of the base plate (100), located in the middle of the centering mechanism (200), and is on the same straight line as the battery cell charging and discharging assembly (420).

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