A short circuit testing mechanism

Abstract

The utility model discloses a short -circuit test mechanism belongs to electric core processing technical field. It includes: frame, rotating arm, middle part rotation installation is in frame, first fixed plate, slidingly arranged in frame, and first fixed plate is installed with first probe, first connecting rod, one end rotation connection with first fixed plate, and the other end rotation connection with one end of rotating arm, second fixed plate, slidingly arranged in frame, and second fixed plate is installed with second probe, second connecting rod, one end rotation connection with second fixed plate, and the other end rotation connection with the other end of rotating arm. Through drive rotating arm rotation, make first probe and second probe synchronous each other close and contact electric core both ends, carry out short -circuit detection to electric core. The movement of two probes is not easy to interfere, thereby shortening the time of short -circuit test mechanism movement, and the time and intensity that electric core both ends are contacted by probe can not exist difference because of the non -uniform of power source, prevent electric core to appear damage or short -circuit detection inaccurate situation.

Description

Technical Field

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

[0002] During the battery cell manufacturing process, short-circuit tests are conducted by contacting the two ends of the battery cell with positive and negative probes. These probes are driven by cylinders or other drive components to slide and contact the two ends of the battery cell before testing. This driving method requires two power sources, which is not conducive to short-circuit testing of the battery cell. Utility Model Content

[0003] The purpose of this utility model is to provide a short-circuit testing mechanism to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: a short-circuit testing mechanism, comprising: a frame; a rotating arm rotatably mounted on the frame at its center; a first fixed plate slidably disposed on the frame, wherein a first probe is mounted on the first fixed plate; a first connecting rod, one end of which is rotatably connected to the first fixed plate and the other end of which is rotatably connected to one end of the rotating arm; a second fixed plate slidably disposed on the frame, wherein a second probe is mounted on the second fixed plate; and a second connecting rod, one end of which is rotatably connected to the second fixed plate and the other end of which is rotatably connected to the other end of the rotating arm; by driving the rotating arm to rotate, the first fixed plate and the second fixed plate can be driven to slide relative to each other, thereby causing the first probe and the second probe to synchronously move closer to or further away from each other.

[0005] This technical solution has at least the following beneficial effects: A single power source drives the rotating arm to rotate, and the first and second connecting rods simultaneously move the first and second fixed plates, causing the first and second probes to synchronously approach and contact both ends of the battery cell. Test data is then transmitted to the testing instrument via a test signal line to determine if the battery cell is short-circuited, thus achieving short-circuit detection. With a single power source, as long as the rotation angle and trigger time of the rotating arm are determined, the movement of the two probes will not interfere, thereby shortening the movement time of the short-circuit testing mechanism. The contact time and force between the probes at both ends of the battery cell will not differ due to inconsistent power sources, preventing damage to the battery cell or inaccurate short-circuit detection, and improving the accuracy of short-circuit testing.

[0006] As a further improvement to the above technical solution, the frame is rotatably connected to a test swing arm, the test swing arm is rotatably connected to a third link, the third link is rotatably connected to the rotating arm, driving the test swing arm to swing, and the rotating arm can be pulled to rotate by the third link.

[0007] As a further improvement to the above technical solution, a test cam is rotatably mounted on the frame, the outer periphery of the test cam abuts against the test swing arm, and the frame is equipped with an elastic element that keeps the test swing arm in contact with the test cam.

[0008] As a further improvement to the above technical solution, the test swing arm is rotatably equipped with rollers whose outer peripheral side abuts against the outer peripheral side of the test cam.

[0009] As a further improvement to the above technical solution, the frame is provided with a partition, and the rotating arm includes a first rotating arm and a second rotating arm. The middle part of the first rotating arm is rotatably connected to one side of the partition, and the two ends of the first rotating arm are rotatably connected to the first connecting rod and the second connecting rod, respectively. The second rotating arm is located on the other side of the partition, and one end of the second rotating arm is connected to the middle part of the first rotating arm, and the other end is rotatably connected to the third connecting rod.

[0010] As a further improvement to the above technical solution, the partition is rotatably mounted with a rotating shaft. One end of the rotating shaft is fixedly connected to the first rotating arm, and the other end is provided with a first keyway. The second rotating arm has a through hole for the rotating shaft to pass through, and a second keyway is provided inside the through hole. A key block is inserted into the first keyway and the second keyway together.

[0011] As a further improvement to the above technical solution, a slide rail and slider assembly is also included. The slide rail and slider assembly includes a guide slide rail and a guide slider that are slidably connected to each other. The first fixed plate is slidably connected to the frame using the slide rail and slider assembly, and the guide slide rail and the guide slider are detachably connected to the frame and the first fixed plate, respectively. And / or the second fixed plate is slidably connected to the frame using the slide rail and slider assembly, and the guide slide rail and the guide slider are detachably connected to the frame and the second fixed plate, respectively.

[0012] As a further improvement to the above technical solution, the guide slide rail is provided with a groove on its side, the guide slider is provided with a slide groove for the guide slide rail to slide, and the side wall of the slide groove is provided with a protrusion that can slide in the groove.

[0013] As a further improvement to the above technical solution, both ends of the guide rail are provided with limiting blocks to restrict the sliding of the guide slider.

[0014] As a further improvement to the above technical solution, the first fixing plate is provided with two first probes, and the second fixing plate is provided with two second probes. Attached Figure Description

[0015] 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:

[0016] Figure 1 This is a schematic diagram of the overall structure from the perspective of Embodiment 1 of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0018] Figure 3 This is a simplified schematic diagram of an embodiment of the present utility model.

[0019] 100, Frame; 110, Partition; 120, Rotating shaft; 130, First keyway; 140, Key block; 200, Rotating arm; 210, First rotating arm; 220, Second rotating arm; 230, Through hole; 300, First fixing plate; 310, First probe; 320, First connecting rod; 400, Second fixing plate; 410, Second probe; 420, Second connecting rod; 500, Test swing arm; 510, Roller; 520, Third connecting rod; 600, Test cam; 610, Elastic element; 700, Slide rail slider assembly; 710, Guide slide rail; 711, Groove; 720, Guide slider; 721, Protrusion; 730, Limiting block. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Reference Figure 1-3 The short-circuit test mechanism includes a frame 100, a rotating arm 200, a first fixed plate 300, a first connecting rod 320, a second fixed plate 400, and a second connecting rod 420.

[0025] The frame 100 is fixedly mounted on the corresponding station of the battery cell processing conveyor line using bolts. The middle of the rotating arm 200 is rotatably connected to the frame 100. One end of the rotating arm 200 is rotatably connected to one end of the first connecting rod 320, and the end of the first connecting rod 320 away from the rotating arm 200 is rotatably connected to the first fixed plate 300. The end of the rotating arm 200 away from the first connecting rod 320 is rotatably connected to one end of the second connecting rod 420, and the end of the second connecting rod 420 away from the rotating arm 200 is rotatably connected to the second fixed plate 400. A first probe 310 is mounted on the side of the first fixed plate 300 closest to the second fixed plate 400, with the detection end of the first probe 310 facing the second fixed plate 400. A second probe 410 is mounted on the side of the second fixed plate 400 closest to the first fixed plate 300, with the detection end of the second probe 410 facing the first fixed plate 300.

[0026] By driving the rotating arm 200 to rotate in the forward direction, the two ends of the rotating arm 200 can pull the first connecting rod 320 and the second connecting rod 420 respectively, so that the first connecting rod 320 and the second connecting rod 420 respectively pull the first fixed plate 300 and the second fixed plate 400 to slide relative to each other. The first probe 310 and the second probe 410, which are respectively located on the first fixed plate 300 and the second fixed plate 400, can synchronously approach each other to position and clamp the battery cell.

[0027] In this test, one of the two probes, the first probe 310 and the second probe 410, is a positive probe, and the other is a negative probe. Both probes 310 and 410 are connected to the testing instrument via test signal lines to determine if the battery cell has a short circuit, thus performing a short circuit test. After the test is completed, the rotating arm 200 is driven to rotate in the opposite direction, causing the two probes to move away from each other synchronously and releasing the positioning clamp on the battery cell, allowing the battery cell to enter the next processing station.

[0028] The power source of this technical solution is singular. As long as the rotation angle and trigger time of the rotating arm 200 are determined, the relative movement of the first probe 310 and the second probe 410 will not interfere, thereby shortening the movement time of the short circuit test mechanism. The contact time and force between the two ends of the battery cell by the first probe 310 and the second probe 410 will not differ due to the inconsistency of the power source, preventing damage to the battery cell or inaccurate short circuit detection, and improving the accuracy of short circuit testing.

[0029] Furthermore, in this embodiment, the short-circuit testing mechanism also includes a test swing arm 500, a third connecting rod 520, a test cam 600, and an elastic element 610. Both the test swing arm 500 and the test cam 600 are rotatably mounted on the frame 100. The end of the test swing arm 500 furthest from the rotation center is rotatably connected to one end of the third connecting rod 520, and the end of the third connecting rod 520 furthest from the test swing arm 500 is rotatably connected to the rotating arm 200. A roller 510 is rotatably mounted in the middle of the test swing arm 500, and the outer periphery of the roller 510 abuts against the outer periphery of the test cam 600. The elastic element 610 is a helical spring, one end of which is connected to the frame 100, and the other end is connected to the test swing arm 500. The connection between the helical spring and the test swing arm 500 is located between the roller 510 and the third connecting rod 520. The coil spring can provide elastic force to pull the test swing arm 500, so that the outer periphery of the roller 510 on the test swing arm 500 always remains in contact with the outer periphery of the test cam 600.

[0030] When the test cam 600 is driven to rotate by a motor or other drive components, the test swing arm 500 can be driven to swing periodically. This causes the rotating arm 200 to rotate via the third link 520. The two ends of the rotating arm 200 are respectively driven by the first link 320 and the second link 420 to move the first fixed plate 300 and the second fixed plate 400 closer or further apart. This causes the first probe 310 and the second probe 410 to move closer or further apart, thus enabling the first probe 310 and the second probe 410 to perform short-circuit testing on the battery cell.

[0031] In other embodiments, the test cam 600 and elastic element 610 may not be provided. Instead, a motor or other driving component may be used to drive the test swing arm 500 to swing, thereby causing the first probe 310 and the second probe 410 to move closer or further apart, so as to realize the short circuit test of the battery cell by the first probe 310 and the second probe 410.

[0032] Specifically, the frame 100 is equipped with a vertically arranged partition 110, and a rotating shaft 120 is rotatably mounted on the partition 110, passing through the front and rear sides of the partition 110. The rotating arm 200 includes a first rotating arm 210 and a second rotating arm 220. The first rotating arm 210 is located at the front of the partition 110, and the middle part of the first rotating arm 210 is fixedly connected to the portion of the rotating shaft 120 protruding from the front of the partition 110, so that the middle part of the first rotating arm 210 is rotatably connected to the partition 110. One end of the first rotating arm 210 is rotatably connected to the first connecting rod 320, and the other end of the first rotating arm 210 is rotatably connected to the second connecting rod 420.

[0033] One end of the second rotating arm 220 has a through hole 230. The portion of the rotating shaft 120 protruding from the rear side of the partition 110 passes through the through hole 230, thereby connecting the rotating shaft 120 to the second rotating arm 220. The portion of the rotating shaft 120 protruding from the rear side of the partition 110 has a first keyway 130, and the side wall of the through hole 230 has a second keyway. A key block 140 passes through the first keyway 130 and the second keyway, thereby drivingly connecting the rotating shaft 120 to the second rotating arm 220. The end of the second rotating arm 220 away from the rotating shaft 120 is rotatably connected to the third connecting rod. It should be noted that the rotation center line of the second rotating arm 220 coincides with the rotation center line of the first rotating arm 210. The first rotating arm 210 and the second rotating arm 220 are located on the front and rear sides of the partition 110, respectively.

[0034] When the test cam 600 rotates, it causes the test swing arm 500 to swing periodically. This, in turn, pulls the second rotating arm 220 to swing via the third link 520. Through the transmission relationship of the rotating shaft 120, this causes the first rotating arm 210 to swing. The two ends of the first rotating arm 210, via the first link 320 and the second link 420 respectively, pull the first fixed plate 300 and the second fixed plate 400 closer together or further apart. This, in turn, causes the first probe 310 and the second probe 410 to move closer together or further apart, enabling short-circuit testing of the battery cell by the first probe 310 and the second probe 410. Connecting the third link 520 to the first rotating arm 210 via the rotating shaft 120 and the second rotating arm 220 ensures stable force distribution at both ends of the first rotating arm 210, thereby improving the stability and reliability of the relative movement of the first probe 310 and the second probe 410.

[0035] Furthermore, in this embodiment, the short-circuit testing mechanism also includes a slide rail slider assembly 700. The first fixing plate 300 and the second fixing plate 400 are each connected to the frame 100 by a slide rail slider assembly 700.

[0036] Specifically, the slide rail and slider assembly 700 includes a guide slide rail 710 and a guide slider 720 that are slidably connected to each other. The guide slide rail 710 is provided with a screw, which is threadedly connected to the frame 100, thereby allowing the guide slide rail 710 to be detachably mounted on the frame 100.

[0037] The guide slider 720 has a groove, with both ends of the groove passing through both ends of the guide slider 720. The groove is just large enough for the guide rail 710 to extend into, and the guide rail 710 can slide within the groove, thereby allowing the guide rail 710 and the guide slider 720 to slide relative to each other.

[0038] The guide slide rail 710 has grooves 711 on both sides, and the length direction of the grooves 711 is the same as the sliding direction of the guide slider 720 relative to the guide slide rail 710. Both sides of the slide groove are provided with protrusions 721.

[0039] The cross-section of the protrusion 721 is adapted to the cross-section of the internal space of the groove 711, and both the cross-section of the protrusion 721 and the cross-section of the internal space of the groove 711 are semi-circular. This facilitates the adaptation of the protrusion 721 and the groove 711, while also preventing the guide slider 720 from disengaging from the guide rail 710 in the direction perpendicular to the sliding direction, thereby improving the relative sliding stability and reliability of the guide rail 710 and the guide slider 720.

[0040] To prevent the guide slider 720 from disengaging from the guide rail 710 in the sliding direction, a limiting block 730 is detachably installed at both ends of the guide rail 710 by bolts. The limiting block 730 can prevent the guide slider 720 from sliding out of the guide rail 710, thereby ensuring the reliability of the sliding of the guide slider 720 relative to the guide rail 710.

[0041] The frame 100 is provided with two slide rail slider assemblies 700. The guide slider 720 of one of the slide rail slider assemblies 700 is detachably connected to the first fixed plate 300 and the relative sliding direction is vertical. If a screw threadedly connected to the guide slider 720 is provided on the first fixed plate 300, the first fixed plate 300 can be removed or installed by loosening or tightening the screw. After the first fixed plate 300 is installed on the guide slider 720, the first fixed plate 300 can slide stably relative to the frame 100.

[0042] Another slide rail slider assembly 700 has a guide slider 720 that is detachably connected to the second fixed plate 400 and slides vertically relative to it. If a screw threadedly connected to the guide slider 720 is provided on the second fixed plate 400, the second fixed plate 400 can be removed or installed by loosening or tightening the screw. After the second fixed plate 400 is installed on the guide slider 720, the second fixed plate 400 can slide stably relative to the frame 100.

[0043] Furthermore, at the station where short-circuit testing of the battery cells is performed, a processing flow can be designed to process two battery cells simultaneously each time. In this embodiment, the first fixing plate 300 has two first probes 310 arranged side by side, and the second fixing plate 400 also has two second probes 410 arranged side by side.

[0044] Two first probes 310 are distributed in a one-to-one correspondence with two second probes 410. The side-by-side direction of the two first probes 310 and the side-by-side direction of the two second probes 410 are the same as the transfer direction of the battery cell.

[0045] Therefore, when driving the test cam 600, the test swing arm 500 and the third link 520 can drive the rotating arm 200 to swing, so that the two ends of the rotating arm 200 can drive the first fixed plate 300 and the second fixed plate 400 to move relative to each other through the first link 320 and the second link 420 respectively. The two first probes 310 and the two second probes 410 move relative to each other synchronously, so that the two cells can be synchronously short-circuit detected, thereby improving the cell processing efficiency.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A short-circuit testing mechanism, characterized in that, include: frame; A rotating arm is rotatably mounted in the middle of the frame; A first fixed plate is slidably disposed on the frame, and a first probe is mounted on the first fixed plate; The first connecting rod has one end rotatably connected to the first fixed plate and the other end rotatably connected to one end of the rotating arm; Second fixing plate; The second probe is mounted on the second fixed plate, which is slidably disposed on the frame. The second connecting rod is rotatably connected at one end to the second fixed plate and rotatably connected at the other end to the other end of the rotating arm. By driving the rotating arm to rotate, the first fixed plate and the second fixed plate can slide relative to each other, thereby causing the first probe and the second probe to move closer or further away from each other synchronously.

2. The short-circuit testing mechanism according to claim 1, characterized in that: The frame is rotatably connected to a test swing arm, and the test swing arm is rotatably connected to a third link. The third link is rotatably connected to the rotating arm, driving the test swing arm to swing. The rotating arm can be pulled to rotate by the third link.

3. The short-circuit testing mechanism according to claim 2, characterized in that: The frame is rotatably mounted with a test cam, the outer periphery of which abuts against the test swing arm, and the frame is equipped with an elastic element that keeps the test swing arm in contact with the test cam.

4. The short-circuit testing mechanism according to claim 3, characterized in that: The test swing arm is rotatably mounted with rollers whose outer peripheral side abuts against the outer peripheral side of the test cam.

5. A short-circuit testing mechanism according to claim 2 or 3, characterized in that: The frame is provided with a partition, and the rotating arm includes a first rotating arm and a second rotating arm. The middle part of the first rotating arm is rotatably connected to one side of the partition, and the two ends of the first rotating arm are rotatably connected to the first connecting rod and the second connecting rod, respectively. The second rotating arm is located on the other side of the partition, and one end of the second rotating arm is connected to the middle part of the first rotating arm, and the other end is rotatably connected to the third connecting rod.

6. The short-circuit testing mechanism according to claim 5, characterized in that: The partition is rotatably mounted with a rotating shaft. One end of the rotating shaft is fixedly connected to the first rotating arm, and the other end is provided with a first keyway. The second rotating arm has a through hole for the rotating shaft to pass through. A second keyway is provided inside the through hole. A key block is inserted into the first keyway and the second keyway together.

7. The short-circuit testing mechanism according to claim 1, characterized in that: It also includes a slide rail and slider assembly, which includes a guide slide rail and a guide slider that are slidably connected to each other. The first fixed plate is slidably connected to the frame using the slide rail and slider assembly, and the guide slide rail and the guide slider are detachably connected to the frame and the first fixed plate, respectively. And / or the second fixed plate is slidably connected to the frame using the slide rail and slider assembly, and the guide slide rail and the guide slider are detachably connected to the frame and the second fixed plate, respectively.

8. The short-circuit testing mechanism according to claim 7, characterized in that: The guide slide rail has a groove on its side, the guide slider has a groove for the guide slide rail to slide in, and the side wall of the groove has a protrusion that can slide in the groove.

9. A short-circuit testing mechanism according to claim 7, characterized in that: Both ends of the guide rail are provided with limiting blocks to restrict the sliding of the guide slider.

10. A short-circuit testing mechanism according to claim 1, characterized in that: The first fixing plate is provided with two first probes, and the second fixing plate is provided with two second probes.

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