A positioning fixture for detecting the alignment of positive and negative electrodes of a lithium battery

Abstract

This utility model discloses a positioning fixture for detecting the alignment of positive and negative electrode plates of lithium batteries, belonging to the technical field of positioning fixtures. It includes a vertical plate with guide grooves and threaded holes, a first baffle, a second baffle, and a third baffle, all of which are bolted to the front of the vertical plate, with the bolts threaded into the threaded holes. A support assembly includes a carrying plate and a telescopic cylinder. This utility model, by placing the lithium battery at a 45-degree angle, allows the corners of the lithium battery to better facilitate X-ray penetration, thereby improving the convenience of detecting the positive and negative electrode plates. Furthermore, this fixture can hold two lithium battery modules at once, enabling simultaneous detection of two lithium batteries, significantly improving its detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, specifically a positioning tooling for detecting the alignment of positive and negative electrode plates of a lithium battery. Background Technology

[0002] The main purpose of lithium battery positive and negative electrode alignment inspection is to ensure the quality and reliability of battery production, and reduce quality problems and after-sales risks caused by poor alignment. If the positive and negative electrodes of a lithium battery are not strictly aligned, the edges of the electrodes may directly contact the separator or opposing electrodes, causing micro-short circuits or thermal runaway. Electrode misalignment will lead to uneven utilization of active materials and accelerate capacity decay. Therefore, through high-efficiency and high-precision inspection, production processes can be optimized, battery design can be improved, and quality can be improved, thereby continuously improving product quality and performance. It is mainly carried out by industrial CT. In the traditional lithium battery positive and negative electrode alignment inspection operation, due to the lack of dedicated positioning fixtures, the lithium battery is placed on a stage and rotated to match the X-ray direction of the industrial CT to complete the penetration inspection of the lithium battery to achieve the alignment of the positive and negative electrodes. This operation is relatively cumbersome, and only one lithium battery can be inspected at a time.

[0003] Therefore, this utility model provides a positioning fixture for detecting the alignment of positive and negative electrode plates of lithium batteries to solve the above problems. Utility Model Content

[0004] This invention provides a positioning fixture for detecting the alignment of positive and negative electrode plates in lithium batteries, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for detecting the alignment of positive and negative electrode sheets of a lithium battery, comprising a vertical plate, wherein a guide groove and a threaded hole are provided on the vertical plate;

[0006] The first baffle, the second baffle, and the third baffle are all fixedly connected to the front of the upright plate by bolts, and the bolts are threadedly connected to the threaded holes.

[0007] The support assembly includes a carrying plate and a telescopic cylinder. A double-ended screw runs through the interior of the carrying plate. A clamping plate is fitted onto the other end of the double-ended screw. A guide seat is fixedly connected to the top of the clamping plate. The telescopic cylinder is fixedly connected to the rear side of the upright plate, and the lifting end of the telescopic cylinder is fixedly connected to the outer wall of the guide seat.

[0008] As a further optimization, the bottom of the upright plate is integrally formed with a base plate, and a reinforcing plate is integrally formed at one corner of the base plate and the upright plate. A reinforcing rod is also fixedly welded between the upright plate and the base plate.

[0009] As a further optimization, an anti-slip pad is fixedly connected to the bottom of the base plate, and the lower surface of the anti-slip pad is uniformly provided with anti-slip texture.

[0010] As a further optimization, the cross-sections of the first baffle, the second baffle, and the third baffle are all L-shaped, and the side of the L-shaped structure that contacts the upright plate is provided with a positioning hole for a suitable bolt to pass through.

[0011] As a further optimization, the first baffle and the second baffle are used for supporting and positioning the upper battery module, and the third baffle and the support assembly are used for supporting and positioning the lower battery module.

[0012] As a further optimization, a right-angle slot is provided at the center of the upper surface of the carrier plate, and a stepped positioning hole is provided on the side of the carrier plate away from the upright plate. Two double-headed screws are symmetrically inserted inside the carrier plate, and the diameter of the double-headed screws is equal to the width of the guide groove.

[0013] As a further optimization, the two ends of the double-ended screw are respectively threaded with a first nut and a second nut. The end of the double-ended screw corresponding to the second nut is a stepped threaded post, and the second nut is installed inside the stepped positioning hole of the carrying plate. The first nut abuts against the side of the clamping plate away from the upright plate.

[0014] As a further optimization, the axis of the telescopic cylinder is parallel to the center line of the guide groove, and the axis of the telescopic cylinder is located at the center of the vertical lines of the two guide grooves.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] 1. By tilting the lithium battery at a 45-degree angle, the corners of the lithium battery are better suited for X-ray penetration, thereby improving the convenience of inspecting the positive and negative electrode plates of the lithium battery. In addition, when the tooling is in use, it can place two lithium battery modules at one time, so that the device can realize the simultaneous inspection and processing of two lithium batteries at one time, which greatly improves its inspection efficiency.

[0017] 2. By using an adjustable structure for the support components, the tilt displacement of the carrier plate, combined with the support of the third baffle against the side of the lithium battery, effectively adapts to the tilting and positioning of lithium batteries of different sizes, further improving the adaptability of the device and meeting the positioning and detection requirements of different types of lithium batteries. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the front view of the present invention.

[0020] Figure 3 This is a schematic diagram of the distribution structure of the telescopic cylinder of this utility model;

[0021] Figure 4 This is an exploded view of the support component of this utility model;

[0022] Figure 5 This is a schematic diagram of the partial explosion structure of the anti-slip mat of this utility model.

[0023] In the diagram: 1. Vertical plate; 11. Base plate; 12. Reinforcing rod; 13. Reinforcing plate; 14. Anti-slip pad; 15. Guide groove; 16. Threaded hole; 2. First baffle; 3. Second baffle; 4. Third baffle; 5. Support assembly; 51. Loading plate; 52. Double-ended screw; 53. Clamping plate; 54. Guide seat; 55. Telescopic cylinder; 56. First nut; 57. Second nut. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 5 As shown, this utility model provides a positioning fixture for detecting the alignment of positive and negative electrode plates of a lithium battery, including a vertical plate 1, on which a guide groove 15 and a threaded hole 16 are provided; a first baffle 2, a second baffle 3, and a third baffle 4, all of which are fixedly connected to the front of the vertical plate 1 by bolts, and the bolts are threadedly connected to the threaded hole 16; a support assembly 5, which includes a carrying plate 51 and a telescopic cylinder 55, with a double-ended screw 52 penetrating through the interior of the carrying plate 51, and a clamping plate 53 sleeved on the other end of the double-ended screw 52. A guide seat 54 is fixedly connected to the top of the 53, and a telescopic cylinder 55 is fixedly connected to the rear side of the upright plate 1. The lifting end of the telescopic cylinder 55 is fixedly connected to the outer wall of the guide seat 54. By driving the telescopic cylinder 55, the guide seat 54 is pulled, which can drive the clamping plate 53 to move. Then, the double-headed screw 52 is connected to drive the carrier plate 51 to move. By adjusting the distance between the carrier plate 51 and the third baffle 4, it can be adapted to clamp and position lithium batteries of different sizes, thereby improving the adaptability of the device and meeting the testing of different types of lithium batteries.

[0026] Furthermore, the bottom of the upright plate 1 is integrally formed with a base plate 11, and a reinforcing plate 13 is integrally formed at one corner of the base plate 11 and the upright plate 1. A reinforcing rod 12 is also fixedly welded between the upright plate 1 and the base plate 11. The reinforcing rod 12 and the reinforcing plate 13 are set to improve the stability of the upright plate 1. An anti-slip pad 14 is fixedly connected to the bottom of the base plate 11, and the lower surface of the anti-slip pad 14 is evenly provided with anti-slip texture. The anti-slip pad 14 improves the stability of the base plate 11 and ensures its static stability by increasing its friction.

[0027] Furthermore, the cross-sections of the first baffle 2, the second baffle 3, and the third baffle 4 are all L-shaped, and the side of the L-shaped structure that contacts the upright plate 1 is provided with a positioning hole for a matching bolt to pass through. The first baffle 2 and the second baffle 3 are distributed at a 90-degree angle, so that the sides of the lithium battery are distributed at a 45-degree angle. Since the X-rays are in a cone beam shape, to ensure that the X-rays penetrate the sample better, the first baffle 2 and the second baffle 3 are used for supporting and positioning the upper battery module, and the third baffle 4 and the support assembly 5 are used for supporting and positioning the lower battery module.

[0028] Furthermore, a right-angle slot is provided at the center of the upper surface of the carrying plate 51, and a stepped positioning hole is provided on the side of the carrying plate 51 away from the upright plate 1. Two double-headed screws 52 are symmetrically inserted inside the carrying plate 51, and the diameter of the double-headed screws 52 is equal to the width of the guide groove 15.

[0029] Furthermore, the two ends of the double-ended screw 52 are respectively threaded with a first nut 56 and a second nut 57. The end of the double-ended screw 52 corresponding to the second nut 57 is a stepped threaded post, and the second nut 57 is installed inside the stepped positioning hole of the carrying plate 51. The first nut 56 abuts against the side of the clamping plate 53 away from the upright plate 1. The axis of the telescopic cylinder 55 is parallel to the center line of the guide slide 15, and the axis of the telescopic cylinder 55 is located at the center of the vertical lines of the two guide slides 15. The parallelism between the axis of the telescopic cylinder 55 and the center line of the guide slide 15 can ensure the stability of the pulling adjustment of the carrying plate 51, and ensure that the carrying plate 51 and the third baffle 4 cooperate to complete the clamping and positioning of the lithium battery.

[0030] Working principle: First, the position of the carrier plate 51 is adjusted according to the specifications of the lithium battery so that the carrier plate 51 and the third baffle 4 stably clamp and position the lithium battery. At the same time, another lithium battery is placed on the first baffle 2 and the second baffle 3. The alignment of the positive and negative electrode plates of the lithium battery is detected by X-ray penetration of the external industrial CT at the diagonal of the two lithium batteries.

[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A positioning fixture for detecting the alignment of positive and negative electrode plates in a lithium battery, characterized in that: It includes a vertical plate (1), on which a guide groove (15) and a threaded hole (16) are provided; The first baffle (2), the second baffle (3) and the third baffle (4) are all fixedly connected to the front of the upright plate (1) by bolts, and the bolts are threadedly connected to the threaded holes (16). The support assembly (5) includes a carrying plate (51) and a telescopic cylinder (55). A double-ended screw (52) runs through the interior of the carrying plate (51). A clamping plate (53) is fitted at the other end of the double-ended screw (52). A guide seat (54) is fixedly connected to the top of the clamping plate (53). The telescopic cylinder (55) is fixedly connected to the rear side of the upright plate (1), and the lifting end of the telescopic cylinder (55) is fixedly connected to the outer wall of the guide seat (54).

2. The positioning tool for detecting the alignment of positive and negative electrode sheets of a lithium battery according to claim 1, characterized in that: The bottom of the upright plate (1) is integrally formed with a base plate (11), and a reinforcing plate (13) is integrally formed at one corner of the base plate (11) and the upright plate (1). A reinforcing rod (12) is also fixedly welded between the upright plate (1) and the base plate (11).

3. The positioning tool for detecting the alignment of positive and negative electrode sheets of a lithium battery according to claim 2, characterized in that: The bottom of the base plate (11) is fixedly connected to an anti-slip pad (14), and the lower surface of the anti-slip pad (14) is uniformly provided with anti-slip patterns.

4. The positioning fixture for detecting the alignment of positive and negative electrode plates of a lithium battery according to claim 1, characterized in that: The cross-sections of the first baffle (2), the second baffle (3) and the third baffle (4) are all L-shaped, and the side of the L-shaped structure that contacts the vertical plate (1) is provided with a positioning hole for a suitable bolt to pass through.

5. The positioning tool for detecting the alignment of positive and negative electrode sheets of a lithium battery according to claim 1, characterized in that: The first baffle (2) and the second baffle (3) are used for supporting and positioning the upper battery module, and the third baffle (4) and the support assembly (5) are used for supporting and positioning the lower battery module.

6. The positioning tool for detecting the alignment of positive and negative electrode sheets of a lithium battery according to claim 1, characterized in that: The upper surface of the carrier plate (51) has a right-angle slot at its center. The side of the carrier plate (51) away from the upright plate (1) has a stepped positioning hole. The interior of the carrier plate (51) has two double-headed screws (52) that symmetrically pass through it, and the diameter of the double-headed screws (52) is equal to the width of the guide groove (15).

7. The positioning tool for detecting the alignment of positive and negative electrode sheets of a lithium battery according to claim 6, characterized in that: The two ends of the double-ended screw (52) are respectively threaded with a first nut (56) and a second nut (57). The end of the double-ended screw (52) corresponding to the second nut (57) is a stepped threaded post, and the second nut (57) is installed inside the stepped positioning hole of the carrying plate (51). The first nut (56) abuts against the side of the clamping plate (53) away from the upright plate (1).

8. The positioning tool for detecting the alignment of positive and negative electrode sheets of a lithium battery according to claim 6, characterized in that: The axis of the telescopic cylinder (55) is parallel to the center line of the guide groove (15), and the axis of the telescopic cylinder (55) is located at the center of the vertical lines of the two guide grooves (15).

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