Lithium battery ultrasonic universal welding positioning device

Abstract

The invention discloses a lithium battery ultrasonic universal welding positioning device in the technical field of lithium battery production equipment, and the lithium battery ultrasonic universal welding positioning device comprises a base and a supporting plate, a connecting rod is installed between the base and the supporting plate, the supporting plate is provided with a groove, and the groove is fixedly provided with a positioning block matched with a battery cell in shape; the supporting plate is provided with a sliding groove communicated with the groove, the sliding groove is in sliding connection with a pressing block used for pressing the lithium battery, and a fixing bolt is arranged between the pressing block and the sliding groove. According to the scheme, the pressing block can be adjusted, can be matched with the positioning block to adapt to welding positioning of lithium batteries of various sizes, and is simple, practical and easy and convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production equipment, and in particular to a lithium battery ultrasonic universal welding positioning device. Background Art

[0002] Lithium metal batteries are generally batteries that use manganese dioxide as the positive electrode material, metallic lithium or its alloy metal as the negative electrode material, and use non-aqueous electrolyte solutions. They are usually non-rechargeable and contain metallic lithium. They have a high energy density, which can theoretically reach 3860 watts / kilogram, and are suitable for use in situations where high energy density is required.

[0003] Lithium metal batteries are composed of battery cells, which are metal conductors that lead out the positive and negative electrodes in lithium batteries and are the contact points when the battery is charged and discharged. The welding quality of the battery cells directly affects the performance, safety and service life of the battery. Good welding can ensure smooth current transmission inside the battery and improve the energy density and cycle performance of the battery. Ultrasonic welding is usually used in the process of welding battery cells in series. Professional fixtures are designed according to the battery size or manual visual positioning is performed. Traditional positioning fixtures have shortcomings such as lack of versatility and inconvenient adjustment, and the manual visual method is not accurate in positioning, which will lead to poor welding quality. Summary of the invention

[0004] The present invention aims to provide a lithium battery ultrasonic universal welding positioning device, so as to provide a device suitable for welding positioning of battery cells of various sizes, which is simple, practical and easy to operate.

[0005] In order to solve the above problems, the present invention provides the following technical solutions:

[0006] A universal ultrasonic welding positioning device for lithium batteries comprises a base and a support plate, a connecting rod is installed between the base and the support plate, the support plate is provided with a groove, a positioning block matching the shape of the battery cell is fixedly provided in the groove, the support plate is provided with a sliding groove connected to the groove, the sliding groove is slidably connected with a clamping block for clamping the lithium battery, and a fixing bolt is provided between the clamping block and the sliding groove.

[0007] Working principle and beneficial effects of the present invention:

[0008] In this solution, two lithium batteries that need to be welded in series are placed in the grooves respectively, and the two lithium batteries are aligned with the positioning blocks so that the welding parts of the two cells are butted against each other. Then, the clamping block is pushed to slide in the sliding groove so that the clamping block clamps the two lithium batteries in the grooves. The clamping block is then fixed in the sliding groove by bolts so that welding can be performed. Since the clamping block can be adjusted, it can adapt to the welding positioning problems of cells of various sizes. It is simple, practical and easy to operate.

[0009] Furthermore, the support plate is provided with a mounting hole for a connecting rod to pass through, and the connecting rod is threadedly connected with a clamping nut for clamping the support plate. The height of the support plate can be adjusted to be suitable for welding tools of different heights.

[0010] Furthermore, the clamping blocks are symmetrically arranged along the axis of the support plate. The two clamping blocks are used to fix the two lithium batteries separately, so that the arrangement is suitable for the case where the two lithium batteries are of different sizes.

[0011] Furthermore, the sliding groove is specifically an elliptical groove, which makes the fixing bolt have a better fixing effect.

[0012] Furthermore, there are two fixing bolts on each clamping block, which are symmetrically arranged along the axis of the clamping block. Each positioning block is used in conjunction with two fixing bolts, so that the positioning block is stably fixed in the sliding groove.

[0013] Furthermore, a cavity is provided inside the support plate, a connecting groove is provided between the groove and the cavity, and the positioning block is symmetrically slidably connected in the connecting groove; a motor is fixedly provided on the support plate, and the motor drives a disc located between the positioning blocks on both sides, and the discs are respectively fixed with gradient blocks abutting against the corresponding positioning blocks; the positioning block is provided with a coaxial through groove, and the through groove is slidably connected with an extrusion block, and the through groove is fixed with a cylinder that drives the extrusion block to slide.

[0014] Since different lithium batteries have different cell installation positions and widths, the distance between the cell and the bottom of the lithium battery is also different. In order to improve the fixing effect of the lithium battery cell, this optimization scheme first drives the disc to rotate through a motor, and the disc drives the gradient block to rotate synchronously. The gradient blocks push the corresponding positioning blocks to move in the connecting grooves, and then move the positioning blocks to a position close to the lithium battery cell. Then, the cylinder drives the extrusion block to slide in the through groove, and moves the extrusion block to the connection between the cell and the lithium battery, so that the extrusion block abuts against the connection between the cell and the lithium battery, thereby positioning and limiting the lithium battery through the extrusion block, so that the cells of the lithium batteries on both sides are connected to each other.

[0015] Furthermore, the extrusion block includes an extrusion portion whose size is larger than that of the positioning block. In this optimized method, the extrusion portion abuts against the connection between the battery cell and the lithium battery, thereby avoiding the influence of the positioning block.

[0016] Furthermore, a spring is provided between the positioning block and the communicating groove, and the spring is compressed when the positioning block slides.

[0017] Furthermore, the pressing block is provided with a rubber layer. When the pressing block presses the lithium battery, the rubber layer is deformed, which has a better fixing effect on the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the structure of a lithium battery ultrasonic universal welding positioning device in Example 2 of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a lithium battery ultrasonic universal welding positioning device in Example 2 of the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the internal structure. DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods:

[0022] The reference numerals in the drawings of the specification include: battery cell 1, positioning block 2, support plate 3, slide groove 4, clamping block 5, fixing bolt 6, spring 7, disc 8, extrusion block 9, cylinder 10, gradient block 11.

[0023] In the following statements, directional words such as "left", "right", "up", and "down" are all based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the directions while keeping the relative positions unchanged, it will not affect the implementation of the plan.

[0024] Embodiment 1: A lithium battery ultrasonic universal welding positioning device, such as Figure 1 As shown, it includes a base (not shown) and a support plate 3, and a connecting rod is installed between the base and the support plate 3. The support plate 3 is provided with a groove, and a positioning block 2 matching the shape of the battery cell 1 is fixed in the groove. The support plate 3 is provided with a sliding groove connected to the groove, and a pressing block 5 for pressing the lithium battery is slidably connected to the sliding groove, and a fixing bolt 6 is provided between the pressing block 5 and the sliding groove.

[0025] In this solution, two lithium batteries to be welded in series are placed in the grooves respectively, and the two lithium batteries are aligned with the positioning block 2 so that the welding parts of the two battery cells 1 are butted against each other. Then, the clamping block 5 is pushed to slide in the sliding groove so that the clamping block 5 clamps the two lithium batteries in the grooves, and then the clamping block 5 is fixed in the sliding groove by bolts so that welding can be carried out. Since the clamping block 5 can be adjusted, it can adapt to the welding positioning problems of battery cells 1 of various sizes, which is simple, practical and easy to operate.

[0026] Embodiment 2: The difference from Embodiment 1 is that a cavity is provided inside the support plate 3, a connecting groove is provided between the groove and the cavity, the positioning block 2 is symmetrically slidably connected in the connecting groove, and a spring 7 is fixedly provided between the positioning block 2 and the connecting groove. The support plate 3 is fixedly provided with a motor, and the motor drives a disc 8 located between the positioning blocks 2 on both sides, and the disc 8 is respectively fixedly provided with a gradient block 11 abutting against the corresponding positioning block 2; the positioning block 2 is provided with a coaxial through groove, and the through groove is slidably connected with an extrusion block 9, and the through groove is fixedly provided with a cylinder 10 driving the extrusion block 9 to slide.

[0027] like Figure 2 As shown, due to different lithium batteries, the installation positions and widths of the battery cells 1 are different, which leads to different distances between the battery cells 1 and the bottom of the lithium battery. In order to improve the fixing effect of the lithium battery cell 1, the optimization scheme first drives the disc 8 to rotate by the motor, and the disc 8 drives the gradient block 11 to rotate synchronously. The gradient block 11 pushes the corresponding positioning block 2 to move in the connecting groove, and the spring 7 is squeezed, thereby moving the positioning block 2 to a position close to the lithium battery cell 1, and then the cylinder 10 drives the extrusion block 9 to slide in the through groove, and moves the extrusion block 9 to the connection between the battery cell 1 and the lithium battery, so that the extrusion block 9 abuts against the connection between the battery cell 1 and the lithium battery, thereby positioning and limiting the lithium battery through the extrusion block 9, so that the battery cells 1 of the lithium batteries on both sides are connected to each other. When the gradient block 11 is separated from the positioning block 2, the compressed spring 7 is reset, and the positioning block 2 is also reset to the initial position.

[0028] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

Claims

1. A lithium battery ultrasonic universal welding positioning device, characterized in that: It includes a base and a support plate, a connecting rod is installed between the base and the support plate, the support plate is provided with a groove, a positioning block matching the shape of the battery cell is fixed in the groove, the support plate is provided with a sliding groove connected to the groove, the sliding groove is slidably connected with a clamping block for clamping the lithium battery, and a fixing bolt is provided between the clamping block and the sliding groove.

2. The lithium battery ultrasonic universal welding positioning device according to claim 1, characterized in that: The support plate is provided with a mounting hole for a connecting rod to pass through, and the connecting rod is threadedly connected with a clamping nut for clamping the support plate.

3. The lithium battery ultrasonic universal welding positioning device according to claim 2, characterized in that: The pressing blocks are symmetrically arranged along the axis of the supporting plate.

4. The lithium battery ultrasonic universal welding positioning device according to claim 3, characterized in that: The sliding groove is specifically an elliptical groove.

5. The lithium battery ultrasonic universal welding positioning device according to any one of claims 1 to 4, characterized in that: There are two fixing bolts on each clamping block, and they are symmetrically arranged along the axis of the clamping block.

6. The lithium battery ultrasonic universal welding positioning device according to claim 5, characterized in that: A cavity is provided inside the support plate, a connecting groove is provided between the groove and the cavity, and the positioning block is symmetrically slidably connected in the connecting groove; a motor is fixedly provided on the support plate, and the motor drives a disc located between the positioning blocks on both sides, and the discs are respectively fixed with gradient blocks abutting against the corresponding positioning blocks; the positioning block is provided with a coaxial through groove, and an extrusion block is slidably connected to the through groove, and a cylinder for driving the extrusion block to slide is fixedly provided in the through groove.

7. The lithium battery ultrasonic universal welding positioning device according to claim 6, characterized in that: The extrusion block includes an extrusion portion having a size greater than that of the positioning block.

8. The lithium battery ultrasonic universal welding positioning device according to claim 7, characterized in that: A spring is arranged between the positioning block and the communicating groove.

9. The lithium battery ultrasonic universal welding positioning device according to claim 8, characterized in that: The pressing block is provided with a rubber layer.

Images