Battery cover plate structure and battery

Abstract

The utility model provides a battery cover plate structure and a battery, the cover plate structure comprises a cover plate body, the bottom of the cover plate body is provided with at least one clamping part; the insulating layer is provided with at least one clamping hole, the insulating layer is attached to the bottom of the cover plate body, and the clamping parts are clamped in the corresponding clamping holes; the cover plate body and the insulating layer are effectively connected, the cover plate body and the insulating layer are not easy to separate even if large vibration exists in the processing, transporting and using processes, the installation reliability between the cover plate body and the insulating layer is guaranteed, the structure is simple, and the cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and more specifically, relates to a battery cover structure and a battery. Background Art

[0002] Batteries are the power source or storage medium for new energy vehicles, energy storage power stations, and new energy applications. Square batteries are increasingly widely used. How to improve the consistency in the production process of square batteries and enhance the manufacturability of products is very important.

[0003] A battery mainly includes a battery cover structure, a battery housing, and a battery cell body. The battery cell body is arranged in the battery housing. After the battery cover structure is welded to the battery housing, an external main structure of the square battery is formed. Among them, an insulating layer is attached to the bottom of the cover body of the battery cover structure. The insulating layer mainly plays the roles of insulation and positioning of the battery cell body in the battery cover structure. At present, during the processing, transportation, and use of the battery, when it is subjected to external vibration for a long time, the cover body and the insulating layer are prone to separation, reducing the reliability of the battery. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a battery cover structure and a battery for the deficiencies of the existing technology, so as to solve the problem that the cover body of the existing battery cover structure and the insulating layer are prone to separation during the processing, transportation, and use, reducing the reliability of the battery as proposed in the background art.

[0005] To achieve the above purpose, the utility model provides a battery cover structure, which includes:

[0006] A cover body, at least one clamping portion is arranged at the bottom of the cover body;

[0007] An insulating layer, at least one clamping hole is arranged on the insulating layer, the insulating layer is attached to the bottom of the cover body, and the clamping portion is clamped in the corresponding clamping hole.

[0008] Preferably, the clamping portion includes:

[0009] A rod body, the top end of the rod body is connected to the insulating layer, and the rod body penetrates through the clamping hole;

[0010] A clamping head, the clamping head is connected to the bottom end of the rod body, and the clamping head is clamped at the bottom of the insulating layer and close to the position of the clamping hole.

[0011] Preferably, the insulating layer is a plastic insulating layer.

[0012] Preferably, the number of the clamping portions and the clamping holes is two each. The two clamping portions are respectively arranged at both ends close to the cover plate body, and the two clamping holes are respectively arranged at both ends close to the insulating layer.

[0013] Preferably, mounting holes are provided at the same position of the cover plate body and the insulating layer. The battery cover plate structure further includes:

[0014] A pole column, which is arranged in the mounting hole;

[0015] An upper lead-out plate and a lower lead-out plate, which are respectively connected to the top end and the bottom end of the pole column. The lower lead-out plate is attached to the bottom of the insulating layer;

[0016] An insulator, which is provided with an insulating hole. A sleeve is formed by extending the insulating hole downward. The insulator is arranged between the upper lead-out plate and the cover plate body. The insulating hole and the sleeve are sleeved on the pole column, and the sleeve is arranged between the inner side of the mounting hole and the pole column;

[0017] A sealing ring, which is sleeved on the pole column and is arranged between the inner side of the mounting hole and the pole column.

[0018] Preferably, an explosion-proof hole is provided at the same position of the cover plate body and the insulating layer. The battery cover plate structure further includes an explosion-proof valve assembly, which is arranged in the explosion-proof hole. The explosion-proof valve protection film of the explosion-proof valve assembly covers the explosion-proof hole position.

[0019] Preferably, the cover plate body is provided with a liquid injection hole.

[0020] Preferably, the cover plate body is an aluminum cover plate body.

[0021] Preferably, the cover plate body, the rod body and the chuck are integrally formed.

[0022] A battery, comprising:

[0023] A housing, which is provided with an opening and is provided with electrolyte inside;

[0024] A battery cover plate structure, which is connected to the opening position;

[0025] A battery cell body, which is arranged inside the housing.

[0026] The present utility model provides a battery cover plate structure and a battery, and the beneficial effects thereof are as follows: when the insulating layer of the cover plate structure is attached to the bottom of the cover plate body, the clamping portion of the cover plate body can be clamped in the clamping hole, realizing an effective connection between the cover plate body and the insulating layer. During the processes of processing, transportation, and use, even with large vibrations, the cover plate body and the insulating layer are not easily separated, ensuring the installation reliability between the cover plate body and the insulating layer. The structure is also relatively simple, saving costs.

[0027] Other features and advantages of the present utility model will be described in detail in the following specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By describing the exemplary embodiments of the present utility model in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present utility model will become more obvious. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0029] Figure 1 FIG. 1 shows a top view structural schematic diagram of a battery cover plate structure according to an embodiment of the present utility model;

[0030] Figure 2 FIG. 2 shows a front view and sectional view structural schematic diagram of a battery cover plate structure according to an embodiment of the present utility model;

[0031] Figure 3 FIG. 3 shows a bottom view structural schematic diagram of a battery cover plate structure according to an embodiment of the present utility model;

[0032] Figure 4 FIG. 4 shows Figure 2 an enlarged structural schematic diagram at position B in FIG. 3.

[0033] DESCRIPTION OF REFERENCE NUMERALS:

[0034] 1. Cover plate body; 2. Clamping portion; 3. Insulating layer; 4. Clamping hole; 5. Pole column; 6. Upper lead-out plate; 7. Lower lead-out plate; 8. Sealing ring; 9. Explosion-proof valve assembly; 10. Explosion-proof valve protective film; 11. Liquid injection hole; 12. Insulator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following will describe the preferred embodiments of the present utility model in more detail. Although the following describes the preferred embodiments of the present utility model, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to be able to fully convey the scope of the present utility model to those skilled in the art.

[0036] As Figures 1-4As shown in the figure, the present utility model provides a battery cover plate structure, which includes:

[0037] A cover plate body 1, at least one clamping portion 2 is provided at the bottom of the cover plate body 1;

[0038] An insulating layer 3, at least one clamping hole 4 is provided on the insulating layer 3, the insulating layer 3 is attached to the bottom of the cover plate body 1, and the clamping portion 2 is clamped in the corresponding clamping hole 4.

[0039] Specifically, in order to solve the problem that the cover plate body and the insulating layer of the existing battery cover plate structure are prone to separation during processing, transportation and use, reducing the reliability of the battery, the present utility model provides a battery cover plate structure. The cover plate body 1 of this cover plate structure is formed by stamping aluminum material, made of Al 3003H 14-H 18s material, and the clamping portion 2 is directly stamped on the cover plate body 1, without separate additional welding or increasing the materials of the cover plate body 1. The clamping hole 4 can also be directly injection-molded on the insulating layer 3. The structure is simple and the cost is saved. When the insulating layer 3 of this cover plate structure is attached to the bottom of the cover plate body 1, the clamping portion 2 of the cover plate body 1 can be clamped in the clamping hole 4 to realize an effective connection between the cover plate body 1 and the insulating layer 3. During processing, transportation and use, even if there is a large vibration, the cover plate body 1 and the insulating layer 3 are not easily separated, ensuring the installation reliability between the cover plate body 1 and the insulating layer 3.

[0040] Such as Figure 4 As shown in the figure, preferably, the clamping portion 2 includes:

[0041] A rod body, the top end of the rod body is connected to the insulating layer 3, and the rod body penetrates through the clamping hole 4;

[0042] A clamping head, the clamping head is connected to the bottom end of the rod body, and the clamping head is clamped at the bottom of the insulating layer 3 and close to the position of the clamping hole 4.

[0043] Specifically, the rod body can penetrate through the clamping hole 4 and the clamping head is clamped at the bottom of the insulating layer 3 to realize an effective connection between the cover plate body 1 and the insulating layer 3.

[0044] Preferably, the insulating layer 3 is a plastic insulating layer.

[0045] Specifically, the plastic insulating layer is made of PP material and is resistant to electrolyte corrosion.

[0046] Preferably, the number of the clamping portions 2 and the clamping holes 4 is two each. The two clamping portions 2 are respectively arranged at positions close to both ends of the cover plate body 1, and the two clamping holes 4 are respectively arranged at positions close to both ends of the insulating layer 3.

[0047] Specifically, the distribution of the two clamping portions 2 and the two clamping holes 4 can further realize an effective connection between the cover plate body 1 and the insulating layer 3.

[0048] Preferably, mounting holes are provided at the same positions of the cover plate body 1 and the insulating layer 3, and the battery cover plate structure further includes:

[0049] A pole column 5, which is arranged in the mounting hole;

[0050] An upper lead-out plate 6 and a lower lead-out plate 7, which are respectively connected to the top end and the bottom end of the pole column 5, and the lower lead-out plate 6 is attached to the bottom of the insulating layer 3;

[0051] An insulator 12, which is provided with an insulating hole, and a sleeve is formed by extending the insulating hole downward. The insulator 12 is arranged between the upper lead-out plate 6 and the cover plate body 1. The insulating hole and the sleeve are sleeved on the pole column 5, and the sleeve is arranged between the inner side of the mounting hole and the pole column 5;

[0052] A sealing ring 8, which is sleeved on the pole column 5 and is arranged between the inner side of the mounting hole and the pole column 5.

[0053] Specifically, the pole column 5 includes at least one positive pole column and at least one negative pole column. At least one positive pole column is arranged on one side of the cover plate body 1, and at least one negative pole column is arranged on the other side of the cover plate body 1. A positive pole polarity identification groove is provided at a position on the cover plate body 1 close to the positive pole column, and a negative pole polarity identification groove is provided at a position close to the negative pole column. The insulator 12 is a plastic insulator.

[0054] Preferably, explosion-proof holes are provided at the same positions of the cover plate body 1 and the insulating layer 2, and the battery cover plate structure further includes an explosion-proof valve assembly 9, which is arranged in the explosion-proof holes, and the explosion-proof valve protective film 10 of the explosion-proof valve assembly 9 covers the explosion-proof hole positions.

[0055] Specifically, when the gas pressure inside the battery is too high, the explosion-proof valve protective film 10 of the explosion-proof valve assembly 9 can be broken through to release the gas inside the battery and prevent the battery from exploding.

[0056] Preferably, the cover plate body is provided with a liquid injection hole 11.

[0057] Specifically, the liquid injection hole 11 is used to inject electrolyte into the battery.

[0058] Preferably, the cover plate body 1, the rod body and the chuck are integrally formed.

[0059] A battery, comprising:

[0060] A housing, which is provided with an opening and is provided with electrolyte inside;

[0061] A battery cover plate structure, which is connected to the opening position;

[0062] A battery cell body, which is arranged inside the housing.

[0063] Specifically, after the cover body 1 of the cover plate structure is welded to the housing of the battery, it forms the external main structure of the battery, which is applicable to square batteries. This cover plate structure can be applied to square batteries such as lithium batteries and sodium batteries.

[0064] In summary, when the battery cover plate structure of the present utility model is applied to a battery, the rod body of the cover body 1 can penetrate through the card hole 4 and make the card head be clamped at the bottom of the insulating layer 3, realizing an effective connection between the cover body 1 and the insulating layer 3. During the processes of processing, transportation, and use, even if there is a large vibration, the cover body 1 and the insulating layer 3 are not easily separated, ensuring the installation reliability between the cover body 1 and the insulating layer 3, ensuring reliable positioning throughout the entire life cycle of the battery, and being relatively simple in structure, saving costs.

[0065] The various embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A battery cover plate structure, characterized in that, The cover plate structure includes: A cover plate body, at least one clamping portion is provided at the bottom of the cover plate body; An insulating layer, at least one clamping hole is provided on the insulating layer, the insulating layer is attached to the bottom of the cover plate body, and the clamping portion is clamped in the corresponding clamping hole.

2. The battery cover plate structure according to claim 1, wherein The clamping portion includes: A rod body, the top end of the rod body is connected to the insulating layer, and the rod body penetrates through the clamping hole; A clamping head, the clamping head is connected to the bottom end of the rod body, and the clamping head is clamped at the bottom of the insulating layer and close to the position of the clamping hole.

3. The battery cover plate structure according to claim 1, characterized in that, The insulating layer is a plastic insulating layer.

4. A battery cover plate structure according to claim 1, characterized in that, The number of the clamping portions and the clamping holes is two, the two clamping portions are respectively arranged at positions close to both ends of the cover plate body, and the two clamping holes are respectively arranged at positions close to both ends of the insulating layer.

5. A battery cover plate structure according to claim 1, characterized in that, Mounting holes are provided at the same position of the cover plate body and the insulating layer, and the battery cover plate structure further includes: A pole column, the pole column is arranged in the mounting hole; An upper lead-out plate and a lower lead-out plate, the upper lead-out plate and the lower lead-out plate are respectively connected to the top end and the bottom end of the pole column, and the lower lead-out plate is attached to the bottom of the insulating layer; An insulator, the insulator is provided with an insulating hole, a sleeve is formed by extending the insulating hole downward, the insulator is arranged between the upper lead-out plate and the cover plate body, the insulating hole and the sleeve are sleeved on the pole column, and the sleeve is arranged between the inner side of the mounting hole and the pole column; A sealing ring, the sealing ring is sleeved on the pole column, and the sealing ring is arranged between the inner side of the mounting hole and the pole column.

6. The battery cover plate structure according to claim 1, characterized in that, An explosion-proof hole is provided at the same position of the cover plate body and the insulating layer, and the battery cover plate structure further includes an explosion-proof valve assembly, the explosion-proof valve assembly is arranged in the explosion-proof hole, and the explosion-proof valve protection film of the explosion-proof valve assembly covers the position of the explosion-proof hole.

7. A battery cover structure according to claim 1, characterized in that, The cover plate body is provided with a liquid injection hole.

8. A battery cover plate structure according to claim 1, characterized in that The cover plate body is an aluminum cover plate body.

9. The battery cover plate structure according to claim 2, characterized in that, The cover plate body, the rod body and the clamping head are integrally formed.

10. A battery, characterized in that, Including: A housing, the housing is provided with an opening, and electrolyte is provided in the housing; A battery cover plate structure according to any one of claims 1-9, connected at the opening position; A battery cell body, the battery cell body is arranged in the housing.

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