Lithium battery ultrasonic welding clamp detection device
By setting up a movable push plate and a pressure sensor in the ultrasonic welding fixture detection device of the lithium battery, the clamping force of the fixture is detected, and the parallelism and perpendicularity of the push plate is ensured through the dovetail groove, the problem of battery cell scrap caused by loose fixtures is solved. Accurate detection and consistency of fixture elasticity are achieved.
Patent Information
- Application Number
- CN202421171737.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-27
AI Technical Summary
During the ultrasonic welding of lithium batteries, loose fixtures cause inertia torn during the high-speed movement of the ring rail, causing the battery cell torn by inertia, causing the battery cell to be scrapped.
A lithium battery ultrasonic welding fixture detection device is designed. By setting movable push plates and pressure sensors on both sides of the detection plate, the clamping elastic force detection of the fixtures, and ensuring the parallelism and perpendicularity of the push plates through the dovetail groove, the parallelism and perpendicularity of the push plates are achieved. Verification of parallelism of fixture push plate.
Accurate clamping force detection of ultrasonic welding fixtures is achieved, ensuring the consistency of the elastic force of the fixture, timely identifying the damage to the fixture spring, and preventing the tear and scrapping of the extreme ears caused by loosening of the fixture.
Smart Images
Figure CN222460895U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery detection, in particular to a lithium battery ultrasonic welding fixture detection device. Background Art
[0002] During the ultrasonic welding process of square lithium batteries, in order to ensure production efficiency, the ring track clamp cyclic welding method is generally adopted. During the welding process, the bare battery cells are placed on the ring track clamp for operation. The current structure of the lithium battery ultrasonic welding ring track clamp uses a spring clamp to fix the position of the battery cells to ensure that the battery cells after welding will not be displaced even when the ring track moves at high speed. In order to clamp the battery cells, the size of the spring clamp needs to be measured with a vernier caliper for calibration. When the size of the clamp is measured with a vernier caliper, there is a large error due to different measuring positions. In fact, it is easy for the battery cells to be not clamped tightly in the clamp. The loose clamp will cause the battery cells after ultrasonic welding. The pole ears will be torn by inertia during the high-speed movement of the ring track, resulting in the scrapping of the battery cells.
[0003] Therefore, how to prevent the clamp from loosening during the battery core welding process is a technical problem that needs to be solved urgently in this field. Utility Model Content
[0004] The utility model provides a lithium battery ultrasonic welding fixture detection device to solve the above technical problems.
[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a lithium battery ultrasonic welding fixture detection device, comprising: a detection plate; wherein rectangular grooves are opened on both side surfaces of the detection plate; and a pressure sensor is fixed on the side surface of the rectangular groove; and a push plate is connected to the rectangular groove through a translation structure.
[0006] Furthermore, two pressure display gauges are provided on the detection plate; wherein the pressure display gauges on the same side are electrically connected to the pressure sensor.
[0007] Furthermore, two dovetail grooves are formed on the bottom surface of the rectangular groove.
[0008] Furthermore, a limiting hole is provided on the bottom surface of the rectangular groove; wherein the limiting hole is arranged between the two dovetail grooves.
[0009] Furthermore, a notch is provided on the push plate; wherein the notch runs through from the top surface of the push plate to the bottom surface of the push plate.
[0010] Furthermore, each group of the translation structures includes two sliders; wherein the two sliders are fixed at the bottom of the push plate; and the outer walls of the sliders are against the inner walls of the dovetail groove.
[0011] Furthermore, the translation structure also includes an anti-slip screw; wherein the bottom end of the anti-slip screw passes through the notch and extends into the limiting hole.
[0012] Furthermore, part of the push plate is arranged in the rectangular groove.
[0013] Furthermore, guide platforms are fixed on the front and back of the detection push plate; and positioning holes are opened on the guide platforms.
[0014] Furthermore, a power supply is fixed on the detection push plate; wherein the power supply is electrically connected to the pressure sensor and the pressure display gauge.
[0015] Compared with the prior art, the utility model detects the clamping elastic force of the ultrasonic welding fixture by arranging movable push plates and pressure sensors on both sides of the detection plate; at the same time, the dovetail groove made under the push plate can ensure that the moving direction of the movable push plate is perpendicular to the push plate plane, thereby ensuring that the two ends of the detection plate are parallel, and the parallelism of the fixture push plate can be verified; by setting up a fixture elastic force detection mechanism, the clamping force of the ultrasonic welding fixture can be accurately read, and the consistency of the elastic force of all fixtures can be ensured. In addition, when the fixture spring is damaged, it can also be identified in time to prevent the ear from being torn and scrapped due to the loosening of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0017] Figure 1 It is a stereoscopic diagram of the optimal embodiment of a lithium battery ultrasonic welding fixture detection device of the utility model;
[0018] Figure 2 It is a three-dimensional cross-sectional view of the optimal embodiment of a lithium battery ultrasonic welding fixture detection device of the utility model;
[0019] Figure 3 It is a three-dimensional cross-sectional view of the optimal embodiment of a slider of the utility model.
[0020] Among them, 1. detection plate; 2. rectangular groove; 21. limit hole; 22. dovetail groove; 3. pressure sensor; 4. translation structure; 41. anti-drop screw; 42. slider; 5. push plate; 51. notch; 6. pressure display gauge; 7. power supply; 8. guide table; 9. positioning hole. DETAILED DESCRIPTION
[0021] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0022] See also Figure 1 , Figure 1 This is a stereogram of the optimal embodiment of a lithium battery ultrasonic welding fixture detection device of the utility model. Figure 1 As shown, at least one embodiment provides a lithium battery ultrasonic welding fixture detection device, including: a detection plate 1; the detection plate 1 imitates the existence of a battery cell, that is, a "fake battery cell". The detection plate 1 has a front side, a north side, a left side and a right side, wherein rectangular grooves 2 are provided on both side surfaces of the detection plate 1, that is, rectangular grooves 2 are provided on the left and right sides; and a pressure sensor 3 is fixed on the side of the rectangular groove 2; a total of two pressure sensors 3 are provided, corresponding to the push plates 5 on the left and right sides respectively, and the push plate 5 is connected to the rectangular groove 2 through a translation structure 4. Two pressure display gauges 6 are provided on the detection plate 1; wherein the pressure display gauge 6 on the same side is electrically connected to the pressure sensor 3. A power supply 7 is fixed on the detection push plate 5; wherein the power supply 7 is electrically connected to the pressure sensor 3 and the pressure display gauge 6.
[0023] Please continue reading Figure 1 Combined with Figures 2 to 3 , Figure 2 It is a three-dimensional cross-sectional view of the optimal embodiment of a lithium battery ultrasonic welding fixture detection device of the utility model; Figure 3 1 is a three-dimensional cross-sectional view of the optimal embodiment of a slider of the utility model. Figures 1 to 3 As shown, the bottom surface of the rectangular groove 2 is provided with two dovetail grooves 22, and the bottom surface of the rectangular groove 2 is provided with a limiting hole 21; wherein the limiting hole 21 is arranged between the two dovetail grooves 22. A notch 51 is provided on the push plate 5; wherein the notch 51 penetrates from the top surface of the push plate 5 to the bottom surface of the push plate 5. Each group of translation structures 4 includes two sliders 42; wherein the two sliders 42 are fixed at the bottom of the push plate 5; and the outer wall of the slider 42 abuts against the inner wall of the dovetail groove 22. The translation structure 4 also includes an anti-slip screw 41; wherein the bottom end of the anti-slip screw 41 passes through the notch 51 and extends into the limiting hole 21. Part of the push plate 5 is arranged in the rectangular groove 2. A guide platform 8 is fixed on the front and back of the detection push plate 5; and a positioning hole 9 is provided on the guide platform 8. The mutual cooperation between the dovetail groove 22 and the slider 42, and the cooperation between the anti-slip screw 41 and the notch 51 ensure that the push plate 5 moves horizontally under the action of the extrusion force.
[0024] In the initial state, the power supply 7 is electrically connected to the pressure sensor 3 and the pressure display gauge 6, and the pressure of the pressure sensor 3 is reset to zero; the ultrasonic welding fixture is manually opened, and the detection plate 1 is placed on the welding fixture through the positioning hole 8; the welding fixture is released, and under the action of the fixture spring, the fixture bottom plate pushes the push plate 5 along the dovetail groove 22 to squeeze the pressure sensor 3 forward, so that the pressure display gauge 6 displays the clamping force of the welding fixture after clamping; the welding fixture bottom plate is adjusted so that the clamp bottom plate and the push plate 5 of the detection plate 1 fit together without a gap after clamping, and the pressure display gauge 6 is adjusted to the required pressure value, thereby completing the inspection and calibration of the welding fixture.
[0025] To summarize, by arranging movable push plates 5 and pressure sensors 3 on both sides of the detection plate 1, the clamping elastic force of the ultrasonic welding fixture is detected; at the same time, through the dovetail groove 22 made under the push plate 5, it can be ensured that the moving direction of the movable push plate 5 is perpendicular to the plane of the push plate 5, thereby ensuring that the two ends of the detection plate 1 are parallel, and the parallelism of the fixture push plate is verified; by setting up a fixture elastic force detection mechanism, the clamping force of the ultrasonic welding fixture can be accurately read, and the consistency of the elastic force of all fixtures can be ensured. In addition, when the fixture spring is damaged, it can also be identified in time to prevent the ear from being torn and scrapped due to the loosening of the fixture.
[0026] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A lithium battery ultrasonic welding fixture detection device, characterized in that: include: Detection plate (1); in Rectangular grooves (2) are provided on both side surfaces of the detection plate (1); and A pressure sensor (3) is fixed on the side of the rectangular groove (2); and A push plate (5) is connected to the rectangular groove (2) via a translation structure (4).
2. The detection device according to claim 1, characterized in that: The detection plate (1) is provided with two pressure display gauges (6); wherein The pressure display gauge (6) on the same side is electrically connected to the pressure sensor (3).
3. The detection device according to claim 2, characterized in that: Two dovetail grooves (22) are provided on the bottom surface of the rectangular groove (2).
4. The detection device according to claim 3, characterized in that: The bottom surface of the rectangular groove (2) is provided with a limiting hole (21); wherein The limiting hole (21) is arranged between the two dovetail grooves (22).
5. The detection device according to claim 4, characterized in that: The push plate (5) is provided with a notch (51); wherein The notch (51) penetrates from the top surface of the push plate (5) to the bottom surface of the push plate (5).
6. The detection device according to claim 4, characterized in that: Each group of the translation structures (4) comprises two sliders (42); wherein The two sliding blocks (42) are fixed to the bottom of the push plate (5); and The outer wall of the sliding block (42) abuts against the inner wall of the dovetail groove (22).
7. The detection device according to claim 5, characterized in that: The translation structure (4) further comprises an anti-slip screw (41); wherein The bottom end of the anti-drop screw (41) passes through the notch (51) and extends into the limiting hole (21).
8. The detection device according to claim 7, characterized in that: Part of the push plate (5) is arranged in the rectangular groove (2).
9. The detection device according to claim 8, characterized in that: A guide platform (8) is fixed on the front and back of the push plate (5); and A positioning hole (9) is provided on the guide platform (8).
10. The detection device according to claim 9, characterized in that: A power source (7) is fixed on the push plate (5); wherein The power supply (7) is electrically connected to the pressure sensor (3) and the pressure display gauge (6).