Automatic calibration clamp for light power battery cell

Abstract

The utility model discloses an automatic calibration clamp for a light power battery cell. The automatic calibration clamp comprises a fixed frame, a conveyor belt is further included; the fixing frame is arranged at the end of the conveying belt, and the conveying belt penetrates through the fixing frame. An open sliding groove is formed in the center of the upper portion of the fixing frame. The positions, corresponding to the two sides of the sliding groove, of the fixing frame are symmetrically provided with embedded copper sheets, the copper sheets are of an inverted-T-shaped structure, and the upper portions of the copper sheets are attached to the upper surface of the fixing frame in a bent mode. When the cylindrical battery cell moves to the position close to the vertical frame, a long rod at the output end of the telescopic air cylinder can intercept an electrode column on the cylindrical battery cell, and the cylindrical battery cell is forced to rotate; and a straight line formed between two points of two electrode columns of the cylindrical battery cell is parallel to the output end of the telescopic cylinder, so that the purpose of calibrating the position is achieved, and automatic calibration clamping and detection of the battery cell with a cylindrical structure are realized.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell clamping technology, specifically, it relates to a lightweight power battery cell automatic calibration clamp. Background Technology

[0002] Lightweight power battery cells are battery units specifically designed for lightweight electric vehicles, portable devices, and other low-power applications. They typically utilize lithium-ion technology, offering high energy density and long cycle life. Lightweight power battery cells are characterized by their light weight and small size, while maintaining good range and charge / discharge performance. After the battery cells are manufactured, their performance is generally tested using a fixture and a multimeter.

[0003] Patent CN220438403U discloses a battery cell testing fixture. The first lead screw rotates to allow the clamping mechanism to clamp and fix the battery cell body. The electric push rod can adjust the horizontal position of the conductive post. The second lead screw rotates to allow the conductive post to be easily adjusted according to the distance between the two electrode posts of the battery cell body. The rotation of the adjusting bolt allows the conductive post to be connected to the electrode post of the battery cell body, enabling the testing mechanism to stably test the battery cell body.

[0004] In the above technical solution, the fixture can inspect battery cells of different sizes by setting the cooperation of lead screw and electric push rod. However, since battery cells not only differ in size but also in appearance, they can be in two forms: cuboid and cylindrical. Because cuboid cells have angular structures, they can be correctly positioned by simply placing them against the edge. However, cylindrical electrode posts cannot be placed against the edge, making it difficult for operators to correctly position the cells at the correct angle. This has certain limitations and makes it difficult to clamp, calibrate, and inspect cylindrical cells. Utility Model Content

[0005] To address the technical problem that existing clamps are unable to clamp, calibrate, and test battery cells with cylindrical structures, this invention provides a lightweight automatic calibration clamp for power battery cells.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A lightweight power battery cell automatic calibration fixture includes a fixed frame and a conveyor belt. The fixed frame is located at the end of the conveyor belt, and the conveyor belt passes through the fixed frame. An open groove is provided at the center of the upper part of the fixed frame. Embedded copper sheets are symmetrically arranged on both sides of the groove on the fixed frame. The copper sheets have a convex structure, and the upper part of the copper sheets is bent and attached to the upper surface of the fixed frame. A movable block is slidably arranged inside the groove. A connecting block is fixedly connected to the movable block. An adjusting block is fixedly connected to the connecting block, and the adjusting block has a rectangular structure. A through groove is provided on the adjusting block, which passes through both sides. Two metal sliders are arranged in the through groove. A copper rod is fixedly connected to the end of each metal slider near the fixed frame, and the copper rod abuts against the copper sheet. A metal collar is fixedly connected to the end of each metal slider near the battery cell. A vertically extendable upright frame is also provided on one side of the conveyor belt near the clamping plate. A telescopic cylinder is fixedly arranged on the upright frame, and the output end of the telescopic cylinder is at the same height as the battery cell electrode post. Two clamping plates are symmetrically arranged on both sides of the conveyor belt corresponding to the positions of the battery cells.

[0008] Furthermore, the upper surface of the fixing frame is provided with wiring copper posts corresponding to the positions of the copper sheets; nuts are fixed to the wiring copper posts.

[0009] Furthermore, a first lead screw is rotatably connected inside the slide groove, and the first lead screw is threadedly connected to the moving block; a first motor is fixedly installed at the bottom of the slide groove, and the output end of the first motor is connected to the first lead screw.

[0010] Furthermore, a second lead screw is rotatably connected within the through groove. This second lead screw is a bidirectional lead screw, and both ends of the second lead screw are threadedly connected to a metal slider. A second motor is fixedly installed at the end of the adjusting block, and the output end of the second motor is connected to the second lead screw.

[0011] Furthermore, the diameter of the metal collar is equal to the diameter of the battery cell electrode post.

[0012] Furthermore, limit rods are fixedly attached to both sides of the conveyor belt away from the uprights, and the end of the limit rod away from the fixed frame has an inwardly contracting figure-eight shape.

[0013] Furthermore, the clamping plate has a multi-segment bent structure; a third lead screw is provided at the lower part of the clamping plate; a third motor is fixedly provided on the outer surface of one of the clamping plates corresponding to the position of the third lead screw.

[0014] Furthermore, limit plates are fixedly attached to the upper part of the clamps at positions away from the fixing frame.

[0015] The beneficial effects of this utility model are:

[0016] 1. In this utility model, the operator can place the cylindrical battery cell to be tested anywhere on the conveyor belt, so that the cylindrical battery cell moves forward at a constant speed on the conveyor belt. Under the restriction of the limiting rod, it is forced to move closer to the middle of the conveyor belt. When the cylindrical battery cell moves to a position close to the stand, the long rod at the output end of the telescopic cylinder will intercept the electrode post on the cylindrical battery cell, forcing the cylindrical battery cell to rotate. This makes the straight line formed between the two points of the two electrode posts of the cylindrical battery cell parallel to the output end of the telescopic cylinder, achieving the purpose of calibration position, and realizing automatic calibration, clamping and testing of cylindrical battery cells.

[0017] 2. This utility model is designed for testing cylindrical battery cells, eliminating the need for manual calibration of the cell placement. When testing cuboid battery cells, the sharp edges and corners make placement easy for operators. The cells can be placed directly on the conveyor belt, and the automatic calibration of the cells can be achieved quickly and conveniently using the conveyor belt and a limiting plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the second lead screw in this utility model;

[0021] Figure 4 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the metal collar structure in this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Conveyor belt; 2. Fixing frame; 3. Copper sheet; 4. Connecting copper post; 5. Nut; 6. Slide groove; 7. First lead screw; 8. Moving block; 9. First motor; 10. Connecting block; 11. Adjusting block; 111. Through groove; 12. Second lead screw; 13. Metal slider; 14. Metal collar; 15. Copper rod; 16. Battery cell; 17. Clamping plate; 171. Limiting plate; 18. Second motor; 19. Third lead screw; 191. Third motor; 20. Stand; 21. Telescopic cylinder; 22. Limiting rod. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 and Figure 2 As shown, a lightweight power battery cell automatic calibration fixture includes a conveyor belt 1; a fixed frame 2 is provided at the end of the conveyor belt 1, and the conveyor belt 1 passes through the fixed frame 2; an open groove 6 is provided at the center of the upper part of the fixed frame 2; embedded copper plates 3 are symmetrically arranged on both sides of the groove 6 on the fixed frame 2, the copper plates 3 have a convex structure, and the upper part of the copper plates 3 is bent and attached to the upper surface of the fixed frame 2; a terminal copper post 4 is provided on the upper surface of the fixed frame 2 at the position corresponding to the copper plate 3; a nut 5 is fixedly connected to the terminal copper post 4, and the terminal copper post 4 and the nut 5 are used to fix the copper plate 3 and connect the terminal of the multimeter.

[0027] Please see Figure 1 , Figure 3 as well as Figure 4 As shown, a movable block 8 is slidably arranged inside the slide groove 6; a first lead screw 7 is rotatably connected inside the slide groove 6, and the first lead screw 7 is threadedly connected to the movable block 8; a first motor 9 is fixedly arranged at the bottom of the slide groove 6, and the output end of the first motor 9 is connected to the first lead screw 7; a connecting block 10 is fixedly connected to the movable block 8; an adjusting block 11 is fixedly arranged horizontally on the connecting block 10, and the adjusting block 11 has a rectangular structure; a through groove 111 is opened on the adjusting block 11, which runs through both sides; a second lead screw 12 is rotatably connected inside the through groove 111, and the second lead screw 12 is a bidirectional lead screw; a second motor 18 is fixedly arranged at the end of the adjusting block 11, and the output end of the second motor 18 is connected to the second lead screw 12.

[0028] Please see Figure 4 and Figure 5 As shown, two metal sliders 13 are threadedly connected to the second lead screw 12; copper rods 15 are fixedly connected to the end of each metal slider 13 near the fixed frame 2, and the copper rods 15 abut against the copper sheet 3; metal collars 14 are fixedly connected to the end of each metal slider 13 near the battery cell 16, and the diameter of the metal collars 14 is equal to the diameter of the electrode post of the battery cell 16.

[0029] Please see Figure 1 and Figure 3As shown, two clamping plates 17 are symmetrically arranged on both sides of the conveyor belt 1 corresponding to the positions of the battery cell 16. The clamping plates 17 have a multi-segment bent structure and are used to clamp the battery cell 16 and fix its position. Limiting plates 171 are fixedly connected to the upper part of the clamping plates 17 away from the fixing frame 2. The limiting plates 171 are used to adjust the position of the battery cell 16 and assist the two clamping plates 17 in fixing the cuboid battery cell 16. A third lead screw 19 is provided at the lower part of the clamping plate 17. The third lead screw 19 is a bidirectional lead screw, and its two ends are respectively threaded to the corresponding clamping plates 17 to drive the two clamping plates 17 to move closer or further apart, which is suitable for battery cells 16 of different sizes. A third motor 191 is fixedly arranged on the outer surface of one of the clamping plates 17 corresponding to the position of the third lead screw 19, and the output end of the third motor 191 is fixedly connected to the third lead screw 19.

[0030] Please see Figure 1 , Figure 2 as well as Figure 4 As shown, a vertically extendable support frame 20 is also provided on one side of the conveyor belt 1 near the clamping plate 17 to accommodate battery cells 16 of different heights. A telescopic cylinder 21 is fixedly installed on the support frame 20. The output end of the telescopic cylinder 21 is at the same height as the electrode post of the battery cell 16 to assist in calibrating the position of the battery cell 16 and centering the battery cell 16 on the conveyor belt 1. Limiting rods 22 are fixedly connected to both sides of the conveyor belt 1 away from the support frame 20. The end of the limiting rod 22 away from the fixed frame 2 has an inwardly contracting V-shaped structure to limit the cylindrical battery cell 16 and center it.

[0031] To facilitate understanding of the above-mentioned technical solution of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below:

[0032] Before testing the battery cell 16: First, the first motor 9 controls the first lead screw 7 to rotate, causing the slider to move the adjusting block 11 to the highest point of the slide groove 6. At the same time, according to the specifications of the battery cell 16, the second motor 18 controls the second lead screw 12 to rotate, causing the two metal sliders 13 to move the metal collars 14 to the positions of the positive and negative electrode posts. In addition, the positive and negative terminals of the multimeter are connected to the copper terminal 4, thereby connecting to the copper sheet 3. Furthermore, the output end of the telescopic cylinder 21 is extended, completing the preparatory work before testing the battery cell 16.

[0033] It is worth noting here that because the copper rod 15 and the copper plate 3 are in contact, the multimeter, the wiring copper post 4, the copper plate 3, the copper rod 15, the metal slider 13, and the metal collar 14 are electrically connected.

[0034] When testing the battery cell 16: the operator randomly places the cylindrical battery cell 16 to be tested on the conveyor belt 1. The cylindrical battery cell 16 moves forward at a constant speed on the conveyor belt 1 and is forced to move closer to the middle of the conveyor belt 1 under the restriction of the limit rod 22. When the cylindrical battery cell 16 moves to a position close to the stand 20, the long rod at the output end of the telescopic cylinder 21 will intercept the electrode post on the cylindrical battery cell 16, forcing the cylindrical battery cell 16 to rotate, so that the straight line formed between the two electrode posts of the cylindrical battery cell 16 is parallel to the output end of the telescopic cylinder 21, thus achieving the purpose of calibrating the position.

[0035] It is worth noting here that when the long rod at the output end of the telescopic cylinder 21 intercepts and corrects the electrode post on the battery cell 16, if the battery cell 16 is not in the correct position, one of the electrode posts will first come into contact with the long rod at the output end of the telescopic cylinder 21. Under the conveying action of the conveyor belt 1 and the blocking action of the limiting rod 22, the battery cell 16 will be forced to rotate, thereby causing the other electrode post to also come into contact with the long rod at the output end of the telescopic cylinder 21.

[0036] When the two electrode posts of the battery cell 16 simultaneously contact the output end of the telescopic cylinder 21, the position of the battery cell 16 can be considered as successfully calibrated. At this time, the output end of the telescopic cylinder 21 immediately retracts to prevent the battery cell 16 from tipping over when the conveyor belt 1 continues to carry the battery cell 16.

[0037] Afterwards, the conveyor belt 1 continues to carry the battery cell 16 forward, allowing the battery cell 16 to smoothly enter between the two clamping plates 17. At this point, the conveyor belt 1 is immediately stopped, and the third motor 191 drives the third lead screw 19 to rotate. The third lead screw 19 drives the two clamping plates 17 to move closer to each other, completing the clamping and fixing of the battery cell 16 and preventing the battery cell 16 from shaking during testing.

[0038] Finally, the first motor 9 drives the first lead screw 7 to rotate again, causing the adjusting block 11 to move the two metal collars 14 downwards until they are fitted onto the electrode posts of the battery cell 16. At this point, the multimeter can complete the electrical connection with the battery cell 16 and achieve the purpose of testing the battery cell 16.

[0039] After the inspection is completed, the conveyor belt 1 can be rotated in the opposite direction to remove the battery cell 16, or the battery cell 16 can be taken away directly.

[0040] In this embodiment, the test is performed on the cylindrical battery cell 16, which does not require manual calibration of the placement position of the battery cell 16. When the test is performed on the cuboid battery cell 16, since the cuboid battery cell 16 has sharp edges and corners, it is easy for the operator to place it. It can be placed directly on the conveyor belt 1, and the automatic calibration of the battery cell 16 can be achieved by using the conveyor belt 1 in conjunction with the limiting plate 171, which is fast and convenient.

[0041] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A lightweight power battery cell automatic calibration fixture, comprising a fixed frame (2) and a conveyor belt (1); the fixed frame (2) is disposed at the end of the conveyor belt (1), and the conveyor belt (1) passes through the fixed frame (2); characterized in that: A sliding groove (6) is provided at the center of the upper part of the fixing frame (2); symmetrically embedded copper sheets (3) are provided on the fixing frame (2), and the upper part of the copper sheets (3) is bent and attached to the upper surface of the fixing frame (2); A movable block (8) is slidably arranged inside the slide groove (6); a connecting block (10) is fixedly connected to the movable block (8); an adjusting block (11) is fixedly connected to the connecting block (10) and is arranged horizontally; a through groove (111) is opened on the adjusting block (11); Two metal sliders (13) are provided in the through groove (111); copper rods (15) are fixedly connected to the end of the metal sliders (13) near the fixed frame (2), and the copper rods (15) abut against the copper sheet (3); metal collars (14) are fixedly connected to the end of the metal sliders (13) near the battery cell (16). A vertically extendable support frame (20) is also provided on one side of the conveyor belt (1) near the clamping plate (17); a telescopic cylinder (21) is fixedly installed on the support frame (20); two clamping plates (17) are symmetrically arranged on both sides of the conveyor belt (1) corresponding to the positions of the battery cell (16).

2. The light-weight battery cell auto-calibration fixture of claim 1, wherein: The upper surface of the fixing frame (2) is provided with a wiring copper post (4) at the position corresponding to the copper sheet (3); a nut (5) is fixed on the wiring copper post (4).

3. The light-weight battery cell auto-calibration fixture of claim 1, wherein: The slide groove (6) is rotatably connected to a first lead screw (7), and the first lead screw (7) is threadedly connected to a moving block (8); a first motor (9) is fixedly installed at the bottom of the slide groove (6), and the output end of the first motor (9) is connected to the first lead screw (7).

4. The light-weight battery cell auto-calibration fixture of claim 1, wherein: A second lead screw (12) is rotatably connected inside the through groove (111). The second lead screw (12) is a bidirectional lead screw, and both ends of the second lead screw (12) are threadedly connected to the metal slider (13). A second motor (18) is fixedly installed at the end of the adjusting block (11), and the output end of the second motor (18) is connected to the second lead screw (12).

5. The light-weight battery cell auto-calibration fixture of claim 1, wherein: The diameter of the metal collar (14) is equal to the diameter of the electrode post of the battery cell (16).

6. The light-weight power battery cell auto-calibration fixture of claim 1, wherein: Limiting rods (22) are fixedly attached to both sides of the conveyor belt (1) away from the upright (20). The end of the limiting rod (22) away from the fixed frame (2) has an inwardly contracting figure-eight structure.

7. The light-weight battery cell auto-calibration fixture of claim 1, wherein: The clamping plate (17) has a multi-segment bent structure; a third lead screw (19) is provided at the lower part of the clamping plate (17); a third motor (191) is fixedly provided on the outer surface of one of the clamping plates (17) at the position corresponding to the third lead screw (19).

8. The light-weight battery cell auto-calibration fixture of claim 7, wherein: Limiting plates (171) are fixedly attached to the upper part of the clamping plate (17) away from the fixing frame (2).

9. The light-weight battery cell auto-calibration fixture of claim 1, wherein: The output end of the telescopic cylinder (21) is at the same height as the electrode post of the battery cell (16).

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