Short circuit detection tool

Abstract

The utility model relates to a short circuit detection tooling, including base station, support seat, ring seat, through-hole, support frame and clamp arm, the base station is equipped with the support seat, the support seat is equipped with the ring seat, the center of the base station and the support seat is equipped with the through-hole, the through-hole is smaller than the diameter of the cell, the base station is equipped with the support frame, and the clamp arm is equipped with the clamp arm. The supporting frame is provided with a sliding groove, the two ends of the sliding groove are each provided with a clamping arm in a sliding mode, the clamping arms do the same-speed reverse movement, and clamping grooves are formed in the clamping arms. A battery cell is preliminarily placed through the ring seat, the clamping of the battery cell is realized through the two clamping arms which do opposite movement at the same speed, and the battery cells of different specifications can be conveniently clamped and fixed through the isosceles-trapezoid-shaped sliding grooves in the clamping arms without causing the deviation of the battery cell.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery testing technology, and in particular to a short-circuit testing fixture. Background Technology

[0002] After the battery cells are wound, they need to be short-circuited, because short-circuited batteries pose a safety hazard of explosion during use.

[0003] Before testing, the battery cells need to be clamped and positioned using tooling to match the short-circuit testing head. Different battery cells have different dimensions and specifications, and the existing tooling cannot be flexibly adjusted according to the outer diameter of the battery cells. Moreover, if there is a problem with the battery cells during testing, they are prone to combustion and smoke. Utility Model Content

[0004] The present invention addresses the problem of providing a short-circuit testing fixture, which solves the technical problem that before testing, the battery cell needs to be clamped and positioned by the fixture to facilitate its correspondence with the short-circuit testing head. Different battery cells have different sizes and specifications, and the existing fixture cannot be flexibly adjusted according to the outer diameter of the battery cell. Furthermore, if there is a problem with the battery cell during testing, it is easy for it to burn and smoke.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A short-circuit detection fixture includes a base, a support seat, a ring seat, a through hole, a support frame, and clamping arms. The support seat is mounted on the base, and the ring seat is mounted on the support seat. A through hole is formed at the center of the base and the support seat, and the through hole is smaller than the diameter of the battery cell. The support frame is mounted on the base, and a sliding groove is formed on the support frame. Clamping arms that move in opposite directions at the same speed are slidably mounted at both ends of the sliding groove. Clamping arms have clamping grooves.

[0007] Preferably, a first motor is mounted on the support frame, and a threaded rod is mounted on the output end of the first motor within a groove.

[0008] Preferably, the threads at both ends of the threaded rod are in opposite directions, and the two ends of the threaded rod are respectively threadedly connected to two clamping arms.

[0009] Preferably, a bearing seat is mounted on the base, and a rotating arm is rotatably mounted inside the bearing seat, and the rotating arm is connected to the rectangular cover.

[0010] Preferably, a second motor is mounted on the side wall of the bearing seat, and the output end of the second motor is connected to the rotating arm.

[0011] Preferably, a fixing frame is installed on the bottom side of the base, a third motor is installed on the fixing frame, and a baffle is installed at the output end of the third motor.

[0012] The beneficial effects of this utility model are: the battery cell is initially placed by the ring seat, and the battery cell is clamped by two clamping arms that move in opposite directions at the same speed. The isosceles trapezoidal groove on the clamping arms makes it easy to clamp and fix battery cells of different specifications without causing the battery cell to shift.

[0013] When a battery cell experiences a short circuit, smoke, or combustion, the second motor drives the rotating arm to rotate, which in turn causes the rectangular cover to flip over and cover the outside of the battery cell. At the same time, the third motor drives the baffle to rotate, blocking the through hole and sealing the battery cell to ensure testing safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a top view of the entire utility model;

[0016] Figure 3 This is a side view of the entire utility model.

[0017] Legend:

[0018] 1. Base; 2. Support seat; 3. Ring seat; 4. Through hole; 5. Support frame; 6. Slide groove; 7. Clamping arm; 8. Clamping groove; 9. First motor; 10. Threaded rod; 11. Rectangular cover; 12. Rotating arm; 13. Shaft seat; 14. Second motor; 15. Fixing frame; 16. Third motor; 17. Baffle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Specific implementation examples are given below.

[0021] See Figures 1-3A short-circuit detection fixture includes a base 1, a support 2, a ring seat 3, a through hole 4, a support frame 5, and clamping arms 7. The support 2 is mounted on the base 1, and the ring seat 3 is mounted on the support 2. A through hole 4 is formed at the center of the base 1 and the support 2, and the through hole 4 is smaller than the diameter of the battery cell. The support frame 5 is mounted on the base 1, and a sliding groove 6 is formed on the support frame 5. Clamping arms 7 that move in opposite directions at the same speed are slidably mounted at both ends of the sliding groove 6. Clamping arms 7 have clamping grooves 8. A first motor 9 is mounted on the support frame 5. A threaded rod 10 is installed in the sliding groove 6 at the output end of the first motor 9. The threads at both ends of the threaded rod 10 are in opposite directions, and the two ends of the threaded rod 10 are threadedly connected to the two clamping arms 7 respectively. The first motor 9 drives the threaded rod 10 to rotate, which in turn drives the threaded clamping arms 7 to move along the sliding groove 6, thereby clamping the battery cell through the clamping arms 7.

[0022] A bearing seat 13 is installed on the base 1. A rotating arm 12 is rotatably installed inside the bearing seat 13 and is connected to a rectangular cover 11. A second motor 14 is installed on the side wall of the bearing seat 13. The output end of the second motor 14 is connected to the rotating arm 12. The second motor 14 drives the rotating arm 12 to rotate, which in turn drives the rectangular cover 11 to flip. When the battery cell experiences a short circuit, smoke, or combustion, the rectangular cover 11 can be easily placed over the outside of the battery cell being tested.

[0023] A mounting bracket 15 is installed on the bottom side of the base 1. A third motor 16 is installed on the mounting bracket 15. A baffle 17 is installed at the output end of the third motor 16. When the third motor 16 works, it drives the baffle 17 to rotate, which blocks the through hole 4 when the battery cell experiences a short circuit, smoke, or combustion.

[0024] The battery cell is placed inside the ring seat 3, with the bottom tab of the battery cell located inside the through hole 4. The first motor 9 drives the threaded rod 10 to rotate, which in turn drives the threaded clamping arm 7 to move along the slide groove 6 until the battery cell is clamped and fixed in the clamping groove 8 of the clamping arm 7. Then, the short circuit detection device probe contacts the top and bottom tabs of the battery cell for detection. After the detection is completed, the battery cell is removed from the ring seat 3 and replaced with another battery cell. The operation is repeated to detect the battery cell.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A short-circuit detection fixture, characterized in that, The device includes a base (1), a support seat (2), a ring seat (3), a through hole (4), a support frame (5), and a clamping arm (7). The support seat (2) is installed on the base (1), and the ring seat (3) is installed on the support seat (2). A through hole (4) is opened at the center of the base (1) and the support seat (2), and the through hole (4) is smaller than the diameter of the battery cell. The support frame (5) is installed on the base (1), and a sliding groove (6) is opened on the support frame (5). A clamping arm (7) that moves in opposite directions at the same speed is slidably installed at both ends of the sliding groove (6). A clamping groove (8) is opened on the clamping arm (7).

2. The short-circuit detection fixture according to claim 1, characterized in that, The support frame (5) is equipped with a first motor (9), and the output end of the first motor (9) is located in the slide groove (6) and a threaded rod (10) is installed.

3. The short-circuit detection fixture according to claim 2, characterized in that, The threaded rod (10) has opposite thread directions at both ends, and the two ends of the threaded rod (10) are threadedly connected to the two clamping arms (7) respectively.

4. A short-circuit detection fixture according to claim 3, characterized in that, A bearing seat (13) is installed on the base (1), and a rotating arm (12) is rotatably installed inside the bearing seat (13), and the rotating arm (12) is connected to the rectangular cover (11).

5. A short-circuit detection fixture according to claim 4, characterized in that, A second motor (14) is installed on the side wall of the bearing seat (13), and the output end of the second motor (14) is connected to the rotating arm (12).

6. A short-circuit detection fixture according to claim 5, characterized in that, A fixing frame (15) is installed on the bottom side of the base (1), and a third motor (16) is installed on the fixing frame (15). A baffle (17) is installed at the output end of the third motor (16).

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