A pole top cover protective cap and square battery

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly relates to a pole top cover protective cap and a square battery, comprising: a cover plate, the cover plate is used to cover the top of a battery cell; a cap body, the cap body is arranged on the lower side of the cover plate, and is used to be clamped and fixed with the side wall of the battery cell; wherein, the cover plate is provided with a through hole connected with the battery cell injection port; the utility model has the beneficial effect that when the battery cell is injected with liquid, the pole top cover protective cap is arranged on the top of the battery cell, the pole of the battery cell is covered during the injection operation, the electrolyte is prevented from dripping and splashing onto the pole of the battery cell, and the risk of the pole being corroded and contaminated by the electrolyte is effectively avoided, and the utility model has high practicality.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery manufacturing, and in particular relates to a pole top cover protective cap and a square battery. Background Art

[0002] At present, the positive electrode column and the negative electrode column of the square aluminum shell battery cell are both arranged on the top of the battery cell, which is close to the battery cell filling port. During the production process, the positive electrode column and the negative electrode column of the semi-finished battery cell may be contaminated by the electrolyte due to electrolyte dripping and other reasons during the filling process, which will increase the rework cost in the production process. The oxide layer of the column may also be destroyed during the rework process, thereby causing corrosion of the positive electrode column and the negative electrode column. Utility Model Content

[0003] The utility model aims to solve the above-mentioned technical problems and provide a pole top cover protective cap and a square battery, so as to achieve the effect of protecting the pole during the liquid injection process.

[0004] In view of this, the utility model provides a pole top cover protective cap, comprising:

[0005] A cover plate, which is used to seal the top of the battery cell;

[0006] A cap body, which is disposed on the lower side of the cover plate and is used to be engaged and fixed with the side wall of the battery cell;

[0007] Wherein, the cover plate is provided with a through hole connected with the battery cell injection port.

[0008] Furthermore, the cover plate also includes a protective portion, which is protruding on the cover plate along the height direction of the battery cell and is adapted to the pole structure of the battery cell.

[0009] Furthermore, it also includes a battery cell QR code, and the battery cell QR code is arranged on the cover plate.

[0010] Furthermore, the cap body is arranged along the circumference of the cover plate.

[0011] Furthermore, the cap body also includes an anti-slip portion, which is arranged on the inner side of the cap body and is used to abut against the side wall of the battery cell.

[0012] Furthermore, it also includes a claw, which is arranged on the outside of the cap body.

[0013] Furthermore, the cap body and the cover plate are an integral structure.

[0014] A square battery comprises the pole top cover protective cap as described in any one of the above items.

[0015] The beneficial effects of the utility model are:

[0016] 1. When the battery cell is injected with liquid, the pole top cover protective cap is set on the top of the battery cell. The pole of the battery cell is covered during the injection process to prevent the electrolyte from splashing onto the pole of the battery cell, effectively avoiding the risk of the pole being corroded and contaminated by the electrolyte, and having high practicality.

[0017] 2. Staff can obtain information about the battery cells during the production process by scanning the QR code, which facilitates information traceability and flow during the production process and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the overall structure of the utility model;

[0019] Figure 2 It is a top view of the overall structure of the utility model;

[0020] Figure 3 It is an enlarged schematic diagram of a local structure of the utility model;

[0021] The symbols in the figure are:

[0022] 1. Cover plate; 2. Cap body; 3. Through hole; 4. Protective part; 5. Anti-slip part; 6. Claw; 7. Battery cell QR code. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0025] Embodiment 1:

[0026] This embodiment provides a pole top cover protective cap, including:

[0027] A cover plate 1, wherein the cover plate 1 is used to seal the top of the battery cell;

[0028] A cap body 2, which is disposed on the lower side of the cover plate 1 and is used to be engaged and fixed with the side wall of the battery cell;

[0029] The cover plate 1 is provided with a through hole 3 which is connected with the battery cell injection port.

[0030] In the present technical solution, when the battery cell is injected with liquid, the pole top cover protective cap is first placed on the top of the battery cell, the cap body 2 of the protective cap is engaged and fixed with the side wall of the battery cell, so that the anti-slip cap is firmly installed on the top of the battery cell, the top of the battery cell is sealed with the cover plate 1 of the protective cap, and then the liquid is injected into the battery cell through the through hole 3 on the cover plate 1.

[0031] The cap body 2 is arranged on the lower side of the cover plate 1. The cap body 2 can be connected to both ends of the cover plate 1 in the length direction, or can be connected to both ends of the cover plate 1 in the width direction, which can meet the requirement of fixing the protective cap on the top of the battery cell.

[0032] In addition, there is no limitation on the shape of the cap body 2, which may be a triangle, a square, a circle or any other shape, and can be fixedly engaged with the side wall of the battery cell to secure the protective cap as a whole on the top of the battery cell.

[0033] In summary, through this structural design, the poles of the battery cell are covered during the liquid injection operation to prevent the electrolyte from splashing onto the poles of the battery cell, effectively avoiding the risk of the poles being corroded and contaminated by the electrolyte, and the practicality is high.

[0034] Embodiment 2:

[0035] This embodiment provides a pole top cover protective cap, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0036] Furthermore, the cover plate 1 further comprises a protection portion 4, which is protruding on the cover plate 1 along the height direction of the battery cell and is adapted to the pole structure of the battery cell.

[0037] In the present technical solution, the protruding shape of the protective part 4 can be cylindrical, rectangular or other structural shapes, mainly depending on the shape of the pole of the covered battery cell. When the protective cap is set on the top of the battery cell, the protective part 4 can cover the pole, thereby achieving more comprehensive protection for the pole on the top of the battery cell, preventing the pole from being corroded and damaged during the injection process, and the cover plate 1 fits with the top of the battery cell, so that the protective cap as a whole can cover the top of the battery cell more tightly, enhancing the protection performance.

[0038] In addition, through this structural design, the protective cap is more compatible with the top structure of the battery cell, which makes the protective cap easier to install and remove, saving time and cost, thereby effectively improving the efficiency of liquid injection.

[0039] Embodiment 3:

[0040] This embodiment provides a pole top cover protective cap, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0041] Furthermore, it also includes a battery cell two-dimensional code 7, and the battery cell two-dimensional code 7 is arranged on the cover plate 1.

[0042] In the present technical solution, an area for setting a QR code is reserved on the cover plate 1 of the protective cap, and a battery cell QR code 7 is set in the area. The staff can obtain the information of the battery cell in the production process by scanning the QR code. Through this structural design, information tracing and flow in the production process are facilitated, and the practicality is high.

[0043] Embodiment 4:

[0044] This embodiment provides a pole top cover protective cap, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0045] Furthermore, the cap body 2 is arranged along the circumference of the cover plate 1 .

[0046] In the present technical solution, a cap body 2 is connected to both ends of the cover plate 1 in the length and width directions. Through this structural design, the connection area between the protective cap and the side wall of the battery cell can be increased, making the connection between the protective cap and the battery cell more stable, preventing the protective cap from shifting and loosening during the injection process, reducing the risk of accidents during the injection process, and improving safety of use.

[0047] Embodiment 5:

[0048] This embodiment provides a pole top cover protective cap, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] Furthermore, the cap body 2 further includes an anti-slip portion 5 , which is disposed on the inner side of the cap body 2 and is used to abut against the side wall of the battery cell.

[0050] In the present technical solution, the anti-skid portion 5 of the cap body 2 is abutted against the side wall of the battery cell to achieve the overall locking and fixing of the protective cap on the top of the battery cell. The anti-skid portion 5 can be composed of a plurality of protrusions, which can be arranged in a linear array or a circular array, or in an irregular pattern; the anti-skid portion 5 can also be composed of a plurality of convex strips, which can be arranged in a linear array, or in other regular or irregular patterns.

[0051] Preferably, a plurality of convex strips are arranged in a linear array along the height direction of the battery cell. Through this structural design, the connection stability and firmness between the cap body 2 and the side wall of the battery cell are enhanced. Even if one of the convex strips is damaged, the other convex strips can still keep the cap body 2 and the side wall of the battery cell engaged, thereby reducing the probability of accidents and having high practicality.

[0052] At the same time, a plurality of convex strips are evenly distributed in a linear array on the inner side of the cap body 2, so that the clamping force between the cap body 2 and the battery cell is evenly distributed, which helps to reduce local stress concentration and improve the stability and durability of the connection. In addition, the clamping convex strips arranged in a linear array can simplify the design and manufacturing process and reduce manufacturing costs and complexity.

[0053] Embodiment 6:

[0054] This embodiment provides a pole top cover protective cap, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] Furthermore, it also includes a claw 6 , which is arranged on the outside of the cap body 2 .

[0056] In the technical solution of this machine, in the process of installing the protective cap on the battery cell or removing it from the battery cell, it is often necessary to use a manipulator to grab and move the protective cap. By setting a claw 6 on the outside of the cap body 2 of the protective cap, the manipulator that controls the movement of the protective cap can drive the protective cap to move by grabbing the claw 6, thereby avoiding damage to the protective cap when the manipulator grabs the protective cap. And by setting the claw 6, it is also convenient for the manipulator to locate and grab the protective cap, and the convenience of using the protective cap is improved, thereby effectively improving work efficiency and high practicality. It is worth mentioning that there is no limitation on the shape of the claw 6, and it can be any shape structure, as long as it can meet the needs of the manipulator to grab it firmly.

[0057] Embodiment 7:

[0058] This embodiment provides a pole top cover protective cap, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0059] Furthermore, the cap body 2 and the cover plate 1 are an integral structure.

[0060] In the present technical solution, the pole protective cap can be formed in one step by a rubber or plastic injection mold, can be mass-produced and reused, which simplifies the manufacturing process and reduces the production cost, which helps to improve production efficiency and shorten the production cycle. In addition, through the integrated structural design, the structural stability and durability of the pole protective cap are enhanced, and the cap body 2 and the cover plate 1 can be ensured to be sealed, effectively preventing the electrolyte from corroding the top of the battery cell during the injection process, and enhancing the protective performance of the pole top cover protective cap.

[0061] Embodiment 8:

[0062] This embodiment provides a square battery, including the pole top cover protective cap described in any one of the above embodiments 1-7.

[0063] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A pole top cover protective cap, characterized in that: include: A cover plate (1), the cover plate (1) being used to seal the top of the battery cell; A cap body (2), the cap body (2) being arranged on the lower side of the cover plate (1) and being used for being engaged and fixed with the side wall of the battery cell; Wherein, the cover plate (1) is provided with a through hole (3) which is in communication with the battery cell liquid injection port.

2. The pole top cover protective cap according to claim 1, characterized in that: The cover plate (1) further comprises a protective portion (4), wherein the protective portion (4) is protruding on the cover plate (1) along the height direction of the battery cell and is adapted to the pole structure of the battery cell.

3. The pole top cover protective cap according to claim 1, characterized in that: It also includes a battery cell two-dimensional code (7), wherein the battery cell two-dimensional code (7) is arranged on the cover plate (1).

4. The pole top cover protective cap according to claim 1, characterized in that: The cap body (2) is arranged along the circumference of the cover plate (1).

5. The pole top cover protective cap according to claim 1, characterized in that: The cap body (2) further comprises an anti-slip portion (5), wherein the anti-slip portion (5) is arranged on the inner side of the cap body (2) and is used for abutting against the side wall of the battery cell.

6. The pole top cover protective cap according to claim 1, characterized in that: It also comprises a clamping claw (6), wherein the clamping claw (6) is arranged on the outer side of the cap body (2).

7. The pole top cover protective cap according to claim 1, characterized in that: The cap body (2) and the cover plate (1) are an integral structure.

8. A square battery, characterized in that: The invention comprises the pole top cover protective cap according to any one of claims 1 to 7.

Images