Battery pole mistake proofing device

Abstract

The utility model discloses a battery pole mistake proofing device, and relates to the technical field of battery production. The device specifically comprises a cover plate, an upper pole, an insulating plate and a lower pole, the upper pole is at least arranged at one end of the cover plate; the insulating plate is arranged between the upper pole and the cover plate, a clamping structure is arranged between the insulating plate and the upper pole, and the clamping structure is used for limiting the direction of the upper pole and the insulating plate; and the lower pole is arranged on one side, far away from the upper pole, of the cover plate, penetrates through the cover plate and is locked with the upper pole and the insulating plate. The upper pole and the insulating plate are mutually clamped, so that the mounting mode between the upper pole and the insulating plate is unique, the position between the upper pole and the insulating plate cannot be reversed when the upper pole and the insulating plate are manually placed, the attaching degree of the upper pole and the insulating plate is improved, subsequent riveting and fixing are tighter, and the conductive stability of the pole is further improved; and the step of the upper pole can support the flange, so that the riveting stability of the lower pole is further improved, and the riveting yield is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery terminal error prevention device. Background Technology

[0002] The battery top cover is an essential component of lithium-ion batteries, and the terminals are a crucial part of the top cover. The terminals connect to the insulating plate, cover plate, and tabs, ensuring the battery's charge and discharge current conduction function.

[0003] The upper terminal post, insulating plate, cover plate, and lower terminal post are fixed together by riveting. The upper terminal post and insulating plate are both located on the same side of the cover plate, while the lower terminal post is located on the other side of the cover plate. During installation, markings are placed on the upper terminal post and insulating plate to prevent errors, making it easy for users to place the upper terminal post and insulating plate in the correct position. Finally, they are fixed together by riveting, thus realizing the installation of the battery terminals.

[0004] Currently, in the battery cover production process, to ensure the convenience of battery cover production, both the upper electrode post and the insulating plate are installed using thin plates. This simplifies the structure of the battery cover. If thin plates are used for installation, there is a placement position between the upper electrode post and the insulating plate. The upper electrode post and the insulating plate are manually identified and placed on the cover at their respective positions. The lower electrode post is then pressed onto the upper electrode post, and subsequent riveting work can be carried out to complete the installation of the battery cover.

[0005] However, during the above operations, since both the upper electrode post and the insulating plate are made of thin plates, it is very easy for the installation direction of the upper electrode post and the insulating plate to be reversed during the manual identification and installation process. In the long-term repetitive manual work, even if anti-mistake markings are set on the upper electrode post and the insulating plate, it is very easy to cause confusion in observation, resulting in misalignment and poor riveting at the upper electrode post, which affects the conductivity of the electrode post.

[0006] Therefore, this application aims to find a way to avoid reversing the installation orientation of the upper electrode post and the insulating plate, while also further improving the stability of the electrode post's conductivity. Utility Model Content

[0007] The main purpose of this invention is to provide a way to avoid reversing the installation direction of the upper electrode post and the insulating plate, while also further improving the conductivity stability of the electrode post.

[0008] To achieve the above objectives, this utility model proposes a battery terminal error prevention device, comprising:

[0009] Cover plate;

[0010] The upper pole post is located at least at one end of the cover plate;

[0011] An insulating plate is disposed between the upper electrode post and the cover plate, and a clamping structure is provided between the insulating plate and the upper electrode post, the clamping structure being used to define the orientation of the upper electrode post and the insulating plate; and

[0012] The lower electrode post is located on the side of the cover plate away from the upper electrode post, penetrates the cover plate, and is locked to the upper electrode post and the insulating plate.

[0013] In the above scheme, the upper electrode post and the insulating plate are interlocked, and there is only one way to interlock them. If the orientation of the upper electrode post or the insulating plate is incorrect, the interlocking will fail and the orientation will need to be adjusted. This effectively avoids using the original shape of a single thin plate and can greatly reduce the risk of incorrect placement of the upper electrode post or the insulating plate, so as not to affect the conductivity of the upper electrode post.

[0014] Furthermore, the clamping structure includes a concave-convex portion and a protruding portion respectively disposed on the facing sides of the upper electrode post and the insulating plate, or the clamping structure includes a protruding portion and a concave-convex portion respectively disposed on the facing sides of the upper electrode post and the insulating plate, wherein the concave-convex portion and the protruding portion are mutually adapted. The upper electrode post and the insulating plate are mutually clamped. The protruding portion and the concave-convex portion can be disposed on either the upper electrode post or the insulating plate, as long as the protruding portion and the concave-convex portion correspond. In this application, it is preferred that the protruding portion is disposed on the insulating plate and the concave-convex portion is disposed on the upper electrode post.

[0015] Furthermore, the upper electrode post is polygonal, and the concave and convex portions are located at the corners or sides of the upper electrode post. The placement of the concave and convex portions at the corners or sides of the upper electrode post ensures that the position between the upper electrode post and the insulating plate is fixed, guarantees that their orientation is unique, facilitates personnel observation of the assembly process, and minimizes the possibility of gaps between the upper electrode post and the insulating plate.

[0016] Furthermore, the concave and convex portions are arc-shaped grooves. These arc-shaped grooves effectively improve the smoothness of the embedding between the concave and convex portions and the protrusions.

[0017] Furthermore, the radius of the arc-shaped groove in the protrusion is 3-4.5 mm. This range is used to accommodate battery covers of different sizes, taking into account the overall size and embedding requirements.

[0018] Furthermore, the lower electrode post includes a column that penetrates the cover plate, the insulating plate, and the upper electrode post. The column penetrates from one side of the cover plate and passes sequentially through the insulating plate and the upper electrode post, thus fixing the upper electrode post and the insulating plate to the cover plate via the column.

[0019] Furthermore, the cross-section of the column is convex.

[0020] Furthermore, the end of the column facing the upper electrode post has a flange, which is fastened to the step of the upper electrode post. The flange is pressed with rivets, and the step of the upper electrode post supports the flange, effectively preventing the upper electrode post from falling off and improving the stability of the riveting. If the upper electrode post and the insulating plate are placed in reverse, and riveting is used, the lower electrode post is easily detached during the pressing of the flange by the clamping part because the column has no support, affecting the conductivity of the electrode post and the normal use of the battery.

[0021] Furthermore, the upper electrode post includes a negative upper electrode post and a positive upper electrode post respectively disposed at both ends of the cover plate.

[0022] Furthermore, the area of ​​the negative electrode post is at least larger than the area of ​​the positive electrode post. This is because the required conductivity of the positive and negative electrodes differs, and to visually distinguish the positive and negative posts, and to further prevent reverse installation.

[0023] The above technical solution has the following advantages:

[0024] This invention employs a method where the upper electrode post and the insulating plate are interlocked, ensuring a unique installation method between them. This guarantees that the orientation of the upper electrode post and the insulating plate will not be reversed during manual placement, improving the fit between them and making subsequent riveting and fixing more secure. It also further enhances the conductivity stability of the electrode post. This avoids the use of sheet-like upper electrode posts and insulating plates, which are prone to misalignment and poor riveting.

[0025] A flange is provided at the end of the lower electrode post facing the upper electrode post. The flange can be locked onto the step of the upper electrode post. When riveting is subsequently used, the step of the upper electrode post can support the flange, which further improves the stability of the lower electrode post riveting and increases the riveting yield. Attached Figure Description

[0026] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0029] Figure 3 This is a partial cross-sectional schematic diagram of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the positive electrode upper post and the positive electrode insulating plate of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the negative electrode insulating plate and the negative electrode upper pole of this utility model.

[0032] In the diagram: 1. Cover plate; 2. Clamping component; 3. Positive upper electrode post; 31. Positive electrode concave-convex part; 4. Positive electrode insulating plate; 41. Positive electrode protrusion; 5. Negative electrode insulating plate; 51. Negative electrode protrusion; 6. Negative upper electrode post; 61. Negative electrode concave-convex part; 7. Lower electrode post; 71. Column; 72. Flange. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0034] like Figure 1 and Figure 2 As shown, a battery terminal error prevention device includes a cover plate 1, an upper terminal, an insulating plate, and a lower terminal 7. The upper terminal is located at least at one end of the cover plate 1. The insulating plate is located between the upper terminal and the cover plate 1, and a locking structure is provided between the insulating plate and the upper terminal to limit the orientation of the upper terminal and the insulating plate. The lower terminal 7 is located on the side of the cover plate 1 away from the upper terminal, penetrates the cover plate 1, and is locked to the upper terminal and the insulating plate. A single upper terminal can be provided on the cover plate 1, and the number of insulating plates and lower terminals 7 is equal to the number of upper terminals. In this application, it is preferred that two upper terminals are provided on the cover plate 1, serving as the positive and negative terminals respectively.

[0035] Specifically, the upper electrode post and the insulating plate are interlocked, and there is only one way to interlock them. If the upper electrode post or the insulating plate is placed in the wrong direction, the interlocking will fail and the orientation will need to be adjusted. This effectively avoids using the original shape of a single thin plate and can greatly reduce the risk of incorrect placement of the upper electrode post or the insulating plate, so as not to affect the conductivity of the upper electrode post.

[0036] like Figures 3-5 As shown, the clamping structure includes a concave-convex portion and a protruding portion respectively disposed on the facing sides of the upper electrode post and the insulating plate, or the clamping structure includes a protruding portion and a concave-convex portion respectively disposed on the facing sides of the upper electrode post and the insulating plate, the concave-convex portion and the protruding portion being mutually adapted. The upper electrode post and the insulating plate are mutually clamped. The protruding portion and the concave-convex portion can be disposed on either the upper electrode post or the insulating plate, as long as the protruding portion and the concave-convex portion correspond. In this application, it is preferred that the protruding portion is disposed on the insulating plate and the concave-convex portion is disposed on the upper electrode post.

[0037] As an example of this application:

[0038] The protrusion is located on the side of the insulating plate near the upper pole post, that is, the edge of the protrusion away from the insulating plate. The protrusion is arranged circumferentially around the axis of the lower pole post 7. The side of the upper pole post near the insulating plate is provided with corresponding concave and convex parts. The protrusion is embedded in the concave and convex parts, thereby achieving a tight and fixed connection between the upper pole post and the insulating plate, ensuring that the two are placed in the same direction and preventing them from being reversed.

[0039] As an embodiment of this application:

[0040] The upper pole is polygonal, with rounded or chamfered corners. The protrusions and concave parts are located at the corners or sides of the upper pole. The protrusions are positioned at the corresponding corners or sides of the insulating plate, embedding into the concave / convex parts. This ensures a fixed position between the upper pole and the insulating plate, guarantees a unique orientation for both, facilitates observation of the assembly process, and minimizes gaps between the upper pole and the insulating plate.

[0041] like Figures 3-5 As shown, the concave and convex portions are preferably arc-shaped grooves. The arc-shaped grooves can effectively improve the smoothness of the embedding between the concave and convex portions and the protrusions. The radius of the arc-shaped grooves of the concave and convex portions is 3-4.5mm. This range is used to accommodate battery covers of different sizes, taking into account the overall size and embedding requirements.

[0042] In the above solution, the concave and convex parts can be in the form of countersunk platforms, holes or grooves. The protrusions can be designed to mimic the shape of the concave and convex parts. The protrusions can be completely embedded in the concave and convex parts, or only partially embedded in the concave and convex parts, as long as the upper pole and the insulating plate can fit together completely.

[0043] like Figure 3 As shown, the lower electrode post 7 includes a column 71 that penetrates the cover plate 1, the insulating plate, and the upper electrode post. Preferably, the cross-section of the column 71 is convex. The column 71 penetrates from one side of the cover plate 1 and passes through the insulating plate and the upper electrode post in sequence, so that the upper electrode post and the insulating plate are fixed to the cover plate 1 by the column 71.

[0044] Specifically, the end of the column 71 facing the upper electrode post has a flange 72, which is fastened to the step of the upper electrode post. The column 71 also has a flange 72. When the flange 72 is fastened to the step of the upper electrode post, if riveting is used, the clamping member 2 uses a rivet, that is, the rivet is used to press the flange 72. The step of the upper electrode post supports the flange 72, and the lower electrode post 7 is deformed by the rivet on the rivet gun, filling the gap between the upper electrode post, the insulating plate, the cover plate 1 and the lower electrode post 7, forming a firm connection. This can effectively prevent the upper electrode post from falling off and improve the stability of the riveting. If the upper electrode post and the insulating plate are placed in reverse, and riveting is used, when the clamping member 2 presses the flange 72, the column 71 has no support, which can easily cause the lower electrode post 7 to fall off during the pressing, affecting the conductivity of the electrode post and the normal use of the battery. In addition to riveting, laser welding or mechanical fastening with bolts and nuts can also be used. In this case, the upper pole and the insulating plate are directly clamped together, which improves the sealing effect and also improves the conductivity.

[0045] like Figure 1 and Figure 2 As shown, the upper electrode post includes a negative upper electrode post 6 and a positive upper electrode post 3 respectively disposed at both ends of the cover plate 1. In this application, a negative electrode insulating plate 5 and a positive electrode insulating plate 4 are respectively disposed at the negative upper electrode post 6 and the positive upper electrode post 3. A positive electrode protrusion 41 and a negative electrode protrusion 51 are respectively disposed on the positive electrode insulating plate 4 and the negative electrode insulating plate 5. A negative electrode concave-convex portion 61 and a positive electrode concave-convex portion 31 are respectively disposed on the negative upper electrode post 6 and the positive upper electrode post 3. The positive electrode concave-convex portion 31 and the positive electrode protrusion 41 are interlocked with each other. The negative electrode protrusion 51 and the negative electrode concave-convex portion 61 are interlocked with each other. The negative upper electrode post 6, the negative electrode insulating plate 5, the positive upper electrode post 3, and the positive electrode insulating plate 4 are all locked by the lower electrode post 7, completing the riveting.

[0046] like Figure 1 and Figure 2 As shown, the area of ​​the negative electrode upper post 6 is at least larger than the area of ​​the positive electrode upper post 3. In this application, based on the different conductivity requirements of the positive and negative electrodes and to distinguish the positive and negative posts visually, and to further avoid reverse installation, different positive electrode upper posts 3 and negative electrode upper posts 6 are designed, such as the positive electrode upper post 3 being square and the negative electrode upper post 6 being rectangular. In addition, other shapes or areas can be used for differentiation, such as the positive electrode upper post 3 being circular and the negative electrode upper post 6 being oblong.

[0047] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery terminal error prevention device, characterized in that, include: Cover plate (1); The upper pole post is provided at least at one end of the cover plate (1); An insulating plate is disposed between the upper pole post and the cover plate (1), and a clamping structure is provided between the insulating plate and the upper pole post. The clamping structure is used to limit the direction between the upper pole post and the insulating plate. as well as The lower pole post (7) is located on the side of the cover plate (1) away from the upper pole post, penetrates the cover plate (1), and is locked with the insulating plate and the upper pole post.

2. The battery terminal error prevention device as described in claim 1, characterized in that, The clamping structure includes a concave-convex portion and a protruding portion respectively disposed on the facing side of the upper pole post and the insulating plate, or the clamping structure includes a protruding portion and a concave-convex portion respectively disposed on the facing side of the upper pole post and the insulating plate, wherein the concave-convex portion and the protruding portion are mutually adapted.

3. The battery terminal error prevention device as described in claim 2, characterized in that, The upper pole post is polygonal, and the concave and convex portions are provided at the corners or sides of the upper pole post.

4. The battery terminal error prevention device as described in claim 2 or 3, characterized in that, The concave and convex parts are arc-shaped grooves.

5. The battery terminal error prevention device as described in claim 4, characterized in that, The radius of the arc-shaped groove in the concave-convex part is 3-4.5mm.

6. The battery terminal error prevention device as described in claim 1, characterized in that, The lower pole post (7) includes a column (71) that penetrates the cover plate (1), the insulating plate and the upper pole post.

7. The battery terminal error prevention device as described in claim 6, characterized in that, The cross-section of the column (71) is convex.

8. The battery terminal error prevention device as described in claim 6 or 7, characterized in that, The column (71) has a flange (72) at one end facing the upper pole post, and the flange (72) is fastened to the step of the upper pole post.

9. The battery terminal error prevention device as described in claim 1, characterized in that, The upper electrode post includes a negative upper electrode post (6) and a positive upper electrode post (3) respectively disposed at both ends of the cover plate (1).

10. The battery terminal error prevention device as described in claim 9, characterized in that, The area of ​​the negative electrode upper post (6) is at least greater than the area of ​​the positive electrode upper post (3).

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