Ultrasonic welding jig for battery diaphragm

Abstract

The utility model discloses a battery diaphragm ultrasonic welding jig which comprises a bearing plate used for bearing a battery diaphragm, the bearing plate is located under ultrasonic welding equipment, and a containing groove used for containing the battery diaphragm is formed in the bearing plate. And two groups of elastic matching pieces for positioning the battery diaphragm are arranged at the placement groove. The battery diaphragm positioning jig can be matched with positioning holes in battery diaphragms of different models, positioning of various diaphragms can be achieved by simply replacing the positioning protrusions, diversified production requirements are met, the problems that a traditional jig is fixed in structure and poor in adaptability are solved, the trouble that an enterprise frequently replaces a whole set of jig is avoided, and the production efficiency is improved. And the production continuity and flexibility are improved.

Description

Technical Field

[0001] This utility model relates to an ultrasonic welding fixture for battery separators. Background Technology

[0002] In the battery manufacturing process, ultrasonic welding of the battery separator is a key step.

[0003] Currently used welding fixtures have significant limitations in adapting to various battery separators. The mainstream battery separators on the market come in a variety of types, with different sizes, models, and positioning hole specifications.

[0004] Traditional welding fixtures have a fixed structure and can typically only precisely match the positioning holes of a single type of separator. When encountering different separator types, it is difficult to achieve stable and accurate positioning and fixation. This forces companies to frequently change the entire fixture to adapt to different separators, which not only increases equipment procurement costs but also lengthens the production cycle due to replacement and debugging, reducing production continuity and flexibility. Furthermore, some traditional fixtures are cumbersome to fine-tune in positioning, and excessive manual intervention can introduce errors, resulting in problems such as welding misalignment and incomplete welds, affecting battery quality stability. These drawbacks are becoming increasingly prominent on product lines producing batteries of multiple specifications.

[0005] Therefore, an ultrasonic welding fixture for battery separators is proposed. Utility Model Content

[0006] The purpose of this invention is to provide an ultrasonic welding fixture for battery separators, so as to solve the problem mentioned in the background art that the traditional welding fixtures have a fixed structure and can usually only accurately match the positioning holes of a single type of separator.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an ultrasonic welding fixture for battery separators, comprising a support plate for supporting the battery separator, wherein the support plate is located directly below the ultrasonic welding equipment.

[0008] The support plate is provided with a placement groove for placing the battery separator, and two sets of elastic fitting parts for positioning the battery separator are provided at the placement groove.

[0009] Preferably, the elastic fitting includes a positioning groove disposed at the placement groove, and a positioning protrusion is slidably connected inside the positioning groove.

[0010] Preferably, the bottom end of the positioning protrusion is provided with limiting wing plates on both sides, and the limiting wing plates are rectangular in shape.

[0011] Preferably, a return spring is provided inside the positioning groove, and the return spring is located below the positioning protrusion, so that the positioning protrusion can move elastically inside the positioning groove by means of the return spring.

[0012] Preferably, two sets of guide grooves are provided on both sides of the opening of the positioning groove, and the lower part of the guide groove is connected to the elastic groove through a rotary groove.

[0013] Preferably, both sets of guide grooves and elastic grooves cooperate with the limiting wing plate to allow the limiting wing plate to move inside the positioning groove through the guide groove and elastic groove.

[0014] Preferably, the depth of the rotary groove matches the thickness of the limiting wing plate, so that the limiting wing plate can rotate inside the positioning groove through the rotary groove.

[0015] Preferably, the height of the positioning protrusion is greater than the depth of the guide groove, so that the positioning protrusion extends beyond the positioning groove at the elastic groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This invention can adapt to the positioning holes in different models of battery separators. By simply replacing the positioning protrusion, it can achieve the positioning of various separators, meet diverse production needs, solve the problems of fixed structure and poor adaptability of traditional fixtures, avoid the trouble of enterprises frequently changing the entire set of fixtures, and improve production continuity and flexibility.

[0018] The ingenious design of the elastic fitting, including the positioning groove and the positioning protrusion of the sliding connection, as well as the function of the return spring, can achieve fast and accurate positioning, reduce human intervention error, ensure the accuracy of the welding position, effectively solve the problems of welding offset and cold welding caused by inaccurate positioning of traditional jigs, and improve the welding quality and battery performance stability.

[0019] The flexible fitting will not damage the battery separator when fixing it, thus ensuring the integrity and performance stability of the battery separator.

[0020] The interplay between the limiting wing plate, guide groove, and elastic groove, as well as the matching design between the depth of the rotary groove and the thickness of the limiting wing plate, makes the replacement and adjustment of the positioning protrusion more convenient and quick, improving production efficiency. Using a fixture that eliminates the need for frequent replacements reduces equipment procurement costs and production time costs, thereby lowering the company's overall production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the support plate structure according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the positioning protrusion structure according to an embodiment of the present utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0025] Figure 5 This is an enlarged schematic diagram of the structure at point A in an embodiment of this utility model;

[0026] Figure 6 This is a cross-sectional view of the positioning groove structure according to an embodiment of the present utility model;

[0027] Figure 7 This is an enlarged schematic diagram of the structure at point B in an embodiment of this utility model.

[0028] In the diagram: 1. Bearing plate; 11. Mounting groove; 2. Elastic fitting component; 21. Positioning groove; 211. Guide groove; 212. Rotation groove; 213. Elastic groove; 22. Positioning protrusion; 23. Limiting wing plate; 24. Return spring. Detailed Implementation

[0029] To address the limitation of traditional welding fixtures, which typically only allow for precise matching of positioning holes for a single type of diaphragm, this invention provides an ultrasonic welding fixture for battery diaphragms. The technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] Please see Figures 1-7 This utility model provides an ultrasonic welding fixture for battery separators, including a support plate 1 for supporting the battery separator, wherein the support plate 1 is located directly below the ultrasonic welding equipment.

[0031] The support plate 1 is provided with a placement groove 11 for placing the battery separator, and two sets of elastic fitting members 2 for positioning the battery separator are provided at the placement groove 11. The elastic fitting member 2 includes a positioning groove 21 provided at the placement groove 11, and a positioning protrusion 22 is slidably connected inside the positioning groove 21. Limiting wing plates 23 are provided on both sides of the bottom end of the positioning protrusion 22, and the limiting wing plates 23 are rectangular.

[0032] A return spring 24 is provided inside the positioning groove 21, and the return spring 24 is located below the positioning protrusion 22, so that the positioning protrusion 22 can move elastically inside the positioning groove 21 by means of the return spring 24. Two sets of guide grooves 211 are provided on both sides of the groove opening of the positioning groove 21, and the lower part of the guide groove 211 is connected to the elastic groove 213 through the rotary groove 212. Both sets of guide grooves 211 and elastic grooves 213 cooperate with the limiting wing plate 23, so that the limiting wing plate 23 can move inside the positioning groove 21 through the guide grooves 211 and elastic grooves 213. The depth of the rotary groove 212 matches the thickness of the limiting wing plate 23, so that the limiting wing plate 23 can rotate inside the positioning groove 21 through the rotary groove 212. The height of the positioning protrusion 22 is greater than the depth of the guide groove 211, so that the positioning protrusion 22 extends outside the positioning groove 21 at the elastic groove 213.

[0033] The working principle of the ultrasonic welding fixture for battery separators provided by this utility model is as follows: When in use, the welding part of the battery separator is first placed in the placement groove 11 of the support plate 1.

[0034] After the battery separator is placed in the placement groove 11, the positioning protrusion 22 is lifted by the return spring 24 and inserted into the positioning hole of the battery separator to achieve initial positioning. The ultrasonic welding equipment is then started to perform welding operations on the battery separator.

[0035] If different battery separator models are required, the corresponding size positioning protrusion 22 can be replaced. During replacement, rotate the positioning protrusion 22 so that the limiting wing plate 23 rotates along the rotary groove 212 from the top of the elastic groove 213 to the tail end of the guide groove 211. Then, pull the positioning protrusion 22 upwards to remove it. Next, insert the limiting wing plates 23 on both sides of the new positioning protrusion 22 along the guide groove 211 into the positioning groove 21. Press down on the positioning protrusion 22 to compress the return spring 24. When the positioning protrusion 22 moves to the tail end of the guide groove 211, rotate the positioning protrusion 22, and the limiting wing plate 23 rotates along the rotary groove 212 to the top position of the elastic groove 213, completing the replacement of the positioning protrusion 22.

[0036] The height of the positioning protrusion 22 is greater than the depth of the guide groove 211, which ensures that it extends beyond the positioning groove 21 at the elastic groove 213 to achieve effective positioning.

[0037] After positioning is completed, the ultrasonic welding equipment is started to perform welding operations on the battery separator.

[0038] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery separator ultrasonic welding fixture, characterized by: The utility model provides a battery diaphragm positioning device, including a bearing plate (1) for bearing battery diaphragm, bearing plate (1) is located just below ultrasonic welding equipment, The bearing plate (1) is provided with a setting groove (11) for battery diaphragm placement, and two groups of elastic matching parts (2) for battery diaphragm positioning are arranged at the setting groove (11).

2. The battery separator ultrasonic welding tool of claim 1, wherein: The elastic matching part (2) includes a positioning groove (21) arranged at the setting groove (11), and a positioning protrusion (22) is slidably connected inside the positioning groove (21).

3. The battery separator ultrasonic welding tool of claim 2, wherein: The bottom end of the positioning protrusion (22) is provided with a limiting wing plate (23) on both sides, and the limiting wing plate (23) is arranged in a rectangular shape.

4. The battery separator ultrasonic welding tool of claim 3, wherein: A reset spring (24) is arranged inside the positioning groove (21), and the reset spring (24) is located at the lower part of the positioning protrusion (22), so that the positioning protrusion (22) is elastically moved inside the positioning groove (21) through the reset spring (24).

5. The battery separator ultrasonic welding tool of claim 4, wherein: Two groups of guide grooves (211) are opened on both sides of the slot of the positioning groove (21), and the lower part of the guide groove (211) is connected with the elastic groove (213) through the rotary groove (212).

6. The battery separator ultrasonic welding tool of claim 5, wherein: The two groups of guide grooves (211) and elastic grooves (213) are matched with the limiting wing plate (23) to move the limiting wing plate (23) inside the positioning groove (21) through the guide grooves (211) and elastic grooves (213).

7. The battery separator ultrasonic welding tool of claim 6, wherein: The depth of the rotary groove (212) matches the thickness of the limiting wing plate (23) to rotate the limiting wing plate (23) inside the positioning groove (21) through the rotary groove (212).

8. The battery separator ultrasonic welding tool of claim 7, wherein: The height of the positioning protrusion (22) is greater than the depth of the guide groove (211) to extend the positioning protrusion (22) outside the positioning groove (21) at the elastic groove (213).

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