Lithium battery pole guide sheet

Abstract

The utility model relates to the technical field of lithium batteries, and discloses a lithium battery pole guide vane which comprises a guide vane body installed outside a pole body, an inclined opening is formed in the upper surface of the guide vane body in a penetrating mode, a threaded rod is connected to the inner wall of the inclined opening in a threaded mode, and a squeezing block is fixedly connected to the upper surface of the threaded rod. A plurality of tightening openings are formed in the upper surface of the extruding block in a penetrating mode, the inner wall of the extruding block abuts against the outer wall of the pole body, and the outer wall of the extruding block is matched with and abuts against the bevel opening. According to the lithium battery pole guide piece, the threaded rod and the extruding block are arranged in the guide piece body, the extruding block extrudes from the outside of the pole body, before the guide piece body and the pole body are welded, the threaded rod can be rotated firstly, the extruding block is pulled downwards through the threaded rod, and then the extruding block extrudes towards the middle; therefore, when the guide vane body and the pole body are welded in the later period, the guide vane body and the pole body are not easy to deviate.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and specifically relates to a lithium battery pole column guide piece. Background Art

[0002] A lithium battery is a rechargeable battery that uses lithium metal or lithium compounds as the positive and negative electrodes to store and release electrical energy. Inside a lithium battery, there are usually a positive electrode, a negative electrode, an electrolyte, a separator, an outer casing, a pole column, and a guide piece.

[0003] Among them, the pole column and the guide piece are two related but functionally different components in the battery structure:

[0004] The pole column is the direct connection point between the internal structure of the battery and the external circuit, and is the exposed part of the positive or negative electrode of the battery. It is usually made of metal (such as copper, aluminum, or lead alloy) to ensure good electrical conductivity.

[0005] The pole column guide piece is an additional component used to strengthen or optimize the connection between the pole column and the external circuit.

[0006] After retrieval, the patent with the publication number CN216015620U discloses a conductive connection piece and a pole column structure for a large-capacity battery. The middle of the conductive connection piece is provided with rectangular connection grids of equal width and equal distance along the center line. The two sides of the conductive connection piece are respectively connected to the pole column and the pole ear or the pole ear current collector plate. The pole column structure of the large-capacity battery in the embodiment of the present application maximizes the contact area between the pole column and the pole ear, ensures the connection reliability at each connection of the pole column, and is suitable for large-current charging and discharging of large-capacity batteries.

[0007] However, the following problems still exist in the above conductive connection piece and pole column structure of the large-capacity battery:

[0008] Currently, when the guide piece is connected to the pole column, it is mostly by welding. However, since the guide piece and the pole column are usually small in size, it takes time for workers to align the guide piece and the pole column during welding. And during the welding process after alignment, the guide piece and the pole column may shift due to vibration or other reasons, resulting in the welding effect being affected, which is rather inconvenient. Content of the Utility Model

[0009] Aiming at the deficiencies of the prior art, the utility model provides a lithium battery pole column guide piece. Before the worker welds the guide piece body to the pole column body, the threaded rod can be rotated first. By rotating the threaded rod, the squeezing block can be pulled downward, and then the squeezing block can be made to squeeze toward the middle, thereby squeezing the pole column body tightly. Thus, when the guide piece body and the pole column body are welded later, the guide piece body and the pole column body are not likely to shift.

[0010] The present utility model provides the following technical solution: A lithium battery pole column guide piece, which includes a guide piece body installed outside the pole column body. An inclined opening is penetrated through the upper surface of the guide piece body. A threaded rod is threadedly connected to the inner wall of the inclined opening. A squeezing block is fixedly connected to the upper surface of the threaded rod. A plurality of tightening openings are penetrated through the upper surface of the squeezing block. The inner wall of the squeezing block abuts against the outer wall of the pole column body, and the outer wall of the squeezing block matches and abuts against the inclined opening.

[0011] Further, a plurality of support blocks are fixedly connected to one side of the guide piece body close to the squeezing block. The outer walls of the plurality of support blocks are fixedly connected to the inner wall of the squeezing block. The upper surfaces of the plurality of support blocks abut against the outer wall of the pole column body.

[0012] Further, an anti - detachment plate is fixedly connected to one side of the guide piece body far from the squeezing block. The upper surface of the anti - detachment plate abuts against the outer wall of the guide piece body.

[0013] Further, a connecting block is fixedly connected to one side of the anti - detachment plate far from the guide piece body. The diameter of the outer wall of the connecting block is the same as the diameter of the inner wall of the squeezing block.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] For this kind of lithium battery pole column guide piece, by arranging a threaded rod and a squeezing block inside the guide piece body and squeezing from the outside of the pole column body through the squeezing block. Before the worker welds the guide piece body and the pole column body, the threaded rod can be rotated first, and the squeezing block can be pulled downward through the threaded rod. Further, the squeezing block can be made to squeeze towards the middle, thereby squeezing the pole column body tightly. Thus, when welding the guide piece body and the pole column body later, the guide piece body and the pole column body are not likely to shift. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall external view schematic diagram of the present utility model;

[0017] Figure 2 is the overall external view schematic diagram of another perspective of the present utility model;

[0018] Figure 3 is the cross - sectional view schematic diagram of the guide piece body in the present utility model;

[0019] Figure 4 is the cross - sectional view schematic diagram of components such as the guide piece body, the threaded rod and the squeezing block in the present utility model;

[0020] Figure 5 is the present utility model Figure 4 exploded view schematic diagram of each component.

[0021] In the figure: 1. Pole column body; 2. Guide piece body; 3. Tightening block; 4. Connecting block; 5. Anti-disengagement plate; 6. Threaded rod; 7. Support block; 21. Bevel; 31. Tightening opening. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Please refer to Figures 1 - 5 , a lithium battery pole column guide piece, including a guide piece body 2 installed outside the pole column body 1. A bevel 21 is penetrated and opened on the upper surface of the guide piece body 2. A threaded rod 6 is threadedly connected to the inner wall of the bevel 21. A tightening block 3 is fixedly connected to the upper surface of the threaded rod 6. A plurality of tightening openings 31 are penetrated and opened on the upper surface of the tightening block 3. The inner wall of the tightening block 3 abuts against the outer wall of the pole column body 1, and the outer wall of the tightening block 3 matches and abuts against the bevel 21.

[0024] A lithium battery pole column guide piece in the present utility model is similar to the existing lithium battery pole column guide piece, such as a conductive connection piece and a pole column structure of a large-capacity battery disclosed in a patent with a publication number of CN216015620U. As Figures 1 through 5 shown, before welding the guide piece body 2 and the pole column body 1 in the lithium battery pole column guide piece of the present utility model, first insert the pole column body 1 into the inside of the tightening block 3, and then rotate the threaded rod 6 to pull the tightening block 3 downward through the threaded rod 6. Because the upper end of the guide piece body 2 is a bevel 21, and the tightening block 3 has a fan-shaped shape due to the opening of the tightening openings 31, the tightening block 3 can be squeezed towards the middle, thereby squeezing the pole column body 1 tightly. Thus, when the guide piece body 2 and the pole column body 1 are welded later, the guide piece body 2 and the pole column body 1 are not likely to shift, and the probability of defective products is reduced.

[0025] Please mainly refer to Figure 4 and Figure 5 , a plurality of support blocks 7 are fixedly connected to the side of the guide piece body 2 close to the tightening block 3. The outer walls of the plurality of support blocks 7 are fixedly connected to the inner wall of the tightening block 3, and the upper surfaces of the plurality of support blocks 7 abut against the outer wall of the pole column body 1. By providing the support blocks 7, when the pole column body 1 is inserted into the inside of the tightening block 3, a support for the pole column body 1 can be made inside the tightening block 3, thereby limiting the insertion height of the pole column body 1, and the situation where the heights are inconsistent after welding a plurality of pole column bodies 1 and the guide piece body 2 can be avoided.

[0026] Please mainly refer to Figures 2 - 5, on the side of the guide piece body 2 away from the squeezing block 3, a anti - detachment plate 5 is fixedly connected, and the upper surface of the anti - detachment plate 5 abuts against the outer wall of the guide piece body 2. By providing the anti - detachment plate 5, it can be avoided that when the pole body 1 and the guide piece body 2 are not connected, the threaded rod 6 and the squeezing block 3 fall from the inclined opening 21 above the guide piece body 2.

[0027] Please refer mainly to Figures 1 - 5 , on the side of the anti - detachment plate 5 away from the guide piece body 2, a connecting block 4 is fixedly connected, and the diameter of the outer wall of the connecting block 4 is the same as the diameter of the inner wall of the squeezing block 3. By providing the connecting block 4, during the transportation of the guide piece body 2, the connecting block 4 of the previous guide piece body 2 can be inserted into the squeezing block 3 of the next guide piece body 2, increasing the connectivity between adjacent guide piece bodies 2.

[0028] Finally, it should be particularly noted that: the sliding between the connecting block 4 and the squeezing block 3 and the sliding between the pole body 1 and the squeezing block 3 both have a certain frictional force and are not easily separated by themselves.

[0029] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lithium battery pole piece guide, comprising a guide piece body (2) installed outside the pole body (1), characterized in that: The upper surface of the guide piece body (2) is penetrated with an inclined opening (21), and a threaded rod (6) is threadedly connected to the inner wall of the inclined opening (21). The upper surface of the threaded rod (6) is fixedly connected with a squeezing block (3). A plurality of tightening openings (31) are penetrated through the upper surface of the squeezing block (3). The inner wall of the squeezing block (3) abuts against the outer wall of the pole column body (1), and the outer wall of the squeezing block (3) matches and abuts against the inclined opening (21).

2. The lithium battery pole column guide piece according to claim 1, wherein: A plurality of support blocks (7) are fixedly connected to one side of the guide piece body (2) close to the squeezing block (3). The outer walls of the plurality of support blocks (7) are fixedly connected to the inner wall of the squeezing block (3), and the upper surfaces of the plurality of support blocks (7) abut against the outer wall of the pole column body (1).

3. A lithium battery pole column guide sheet according to claim 1 or 2, characterized in that: An anti - detachment plate (5) is fixedly connected to one side of the guide piece body (2) away from the squeezing block (3). The upper surface of the anti - detachment plate (5) abuts against the outer wall of the guide piece body (2).

4. A lithium battery pole piece guide sheet according to claim 3, characterized in that: A connecting block (4) is fixedly connected to one side of the anti - detachment plate (5) away from the guide piece body (2). The diameter of the outer wall of the connecting block (4) is the same as the diameter of the inner wall of the squeezing block (3).

5. The lithium battery pole column guide piece according to claim 3, wherein: A connecting block (4) is fixedly connected to one side of the anti - detachment plate (5) away from the guide piece body (2). The diameter of the outer wall of the connecting block (4) is the same as the diameter of the inner wall of the squeezing block (3).

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