Battery cover plate structure and battery
By designing limiters, positioning parts and sealing rings in the battery cover structure, the problem of poor positioning of the poles in the traditional battery cover structure is solved, the precise positioning of the poles is achieved, and the sealing and reliability of the battery are improved. sex.
Patent Information
- Application Number
- CN202310902635.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-21
- Publication Date
- 2025-01-21
AI Technical Summary
The traditional battery cover structure is not easy to position the pole pillar, which is prone to rotation, offset or twitching, reducing the sealing ability, resulting in air or liquid leakage, and reducing the reliability of the battery.
A battery cover structure is designed, including the cover body, poles, positioning parts and sealing rings. The limiting part of the pole is set on the bottom surface of the cover body. The positioning sleeve of the positioning member is inserted into the installation hole to wrap around the periphery of the pole. The clamping block is embedded in the positioning groove and connected to the pole to ensure the central positioning of the pole and avoid channeling. movement and deflection.
By accurately positioning the poles, the battery sealing is improved, air leakage and liquid leakage are avoided, and the reliability of the battery is enhanced.
Smart Images
Figure CN119340569A_ABST
Abstract
Description
Technical Field
[0001] The present invention 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, new energy applications, etc. At present, the traditional battery cover structure is not easy to position the pole, and the pole is prone to rotation, displacement or movement, which reduces the sealing. Once the momentum is too large, it is easy to leak air and liquid, reducing the reliability of battery use. Summary of the invention
[0003] The purpose of the present invention is to provide a battery cover structure and a battery in view of the deficiencies in the existing technology, so as to solve the problem that the traditional battery cover structure proposed in the above background technology is not easy to position the pole, the pole is prone to rotation, displacement or movement, which reduces the sealing performance, and once the momentum is too large, it is easy to leak air and liquid, thereby reducing the reliability of battery use.
[0004] In order to achieve the above object, the present invention provides a battery cover structure, which includes:
[0005] A cover plate body, wherein the cover plate body is provided with a mounting hole;
[0006] A pole, the pole comprising a pole body and a limiting portion arranged at one end of the pole body, the pole body being arranged in the mounting hole, and the limiting portion being arranged on the bottom surface of the cover body;
[0007] A positioning piece, wherein a raised positioning sleeve is provided on one side of the positioning piece, a positioning groove is provided on the other side of the positioning piece, a clamping block is embedded in the positioning groove, a positioning hole is formed inside the positioning sleeve, the positioning sleeve is passed through the mounting hole and wrapped around the outer circumference of the pole body, the positioning piece is arranged on the top surface of the cover body, and the other end of the pole body is connected to the clamping block.
[0008] Preferably, the battery cover structure further comprises a sealing ring, which is sleeved on the pole body and arranged between the limiting portion and the bottom surface of the cover body.
[0009] Preferably, at least one card slot is provided on the top surface of the cover body around the mounting hole, and at least one card protrusion is provided on one side of the positioning member around the positioning sleeve, and at least one card protrusion is respectively embedded in at least one card slot.
[0010] Preferably, the clamping block is provided with a connecting hole, the other end of the pole body is provided with an annular stepped groove, the other end of the pole body is fixed in the connecting hole, and the clamping block is located on the peripheral side of the connecting hole and embedded in the annular stepped groove.
[0011] Preferably, the positioning groove and the clamping block are rectangular.
[0012] Preferably, the positioning member is a plastic positioning member.
[0013] Preferably, at least two injection holes are provided on the cover body, and the battery cover structure further comprises at least two deceleration valves, and the at least two deceleration valves are respectively connected to the at least two injection holes.
[0014] Preferably, the cover body is provided with an explosion-proof hole, and the battery cover structure includes an explosion-proof valve, and the explosion-proof valve is connected to the explosion-proof hole.
[0015] Preferably, the battery cover structure further comprises an insulating sheet, one side of which covers the bottom surface of the cover body.
[0016] A battery comprising:
[0017] A battery cover structure;
[0018] A shell, wherein the shell is provided with an opening, the cover body is connected to the opening, and an electrolyte is provided in the shell;
[0019] A battery cell is arranged in the shell.
[0020] The present invention provides a battery cover plate structure and a battery, which have the following beneficial effects: a pole body of the cover plate structure is arranged in a mounting hole, a limiting portion is arranged on the bottom surface of the cover plate body, a positioning piece is arranged on the top surface of the cover plate body, and when a clamping block is embedded in a positioning groove, it is connected to the other end of the pole body to prevent the pole body from moving and rotating relative to the cover plate body. A positioning sleeve of the cover plate structure is passed through the mounting hole and wraps around the outer periphery of the pole body to prevent the pole body from shifting to one side. The cover plate structure realizes the center positioning of the pole body in the mounting hole, so that the center line of the pole body is maintained at the center line position of the mounting hole, the positioning is accurate, the sealing is improved, and the reliability of battery use is guaranteed.
[0021] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.
[0023] Figure 1 A schematic diagram of the front structure of a battery cover plate structure according to an embodiment of the present invention is shown;
[0024] Figure 2 A partial cross-sectional structural schematic diagram of a battery cover structure according to an embodiment of the present invention is shown;
[0025] Figure 3 Shows Figure 2 The enlarged structural diagram at A in the middle;
[0026] Figure 4 A schematic diagram of a top view of a battery cover structure according to an embodiment of the present invention is shown;
[0027] Figure 5 A bottom view structural diagram of a battery cover plate structure according to an embodiment of the present invention is shown;
[0028] Figure 6 A schematic diagram of a three-dimensional structure of a battery cover plate structure according to an embodiment of the present invention is shown;
[0029] Figure 7 A schematic diagram of an exploded structure of a battery cover plate structure according to an embodiment of the present invention is shown;
[0030] Description of reference numerals:
[0031] 1. Cover plate body; 2. Mounting hole; 3. Pole body; 4. Limiting part; 5. Positioning piece; 6. Positioning sleeve; 7. Sealing ring; 8. Groove; 9. Clamping convexity; 10. Positioning groove; 11. Clamping block; DETAILED DESCRIPTION
[0032] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention 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 invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0033] like Figure 1-7 As shown, the present invention provides a battery cover structure, which includes:
[0034] A cover body 1, wherein a mounting hole 2 is provided on the cover body 1;
[0035] The pole comprises a pole body 3 and a limiting portion 4 arranged at one end of the pole body 3, the pole body 3 is arranged in the mounting hole 2, and the limiting portion 4 is arranged on the bottom surface of the cover body 1;
[0036] A positioning member 5, a raised positioning sleeve 6 is provided on one side of the positioning member 5, a positioning groove 10 is provided on the other side of the positioning member 5, a clamping block 11 is embedded in the positioning groove 10, a positioning hole is formed inside the positioning sleeve 6, the positioning sleeve 6 is passed through the mounting hole 2 and wrapped around the outer periphery of the pole body 3, the positioning member 5 is arranged on the top surface of the cover body 1, and the other end of the pole body 3 is connected to the clamping block 11.
[0037] Specifically, in order to solve the problem that the traditional battery cover structure is not easy to position the pole, the pole is prone to rotation, offset or movement, which reduces the sealing performance. Once the momentum is too large, it is easy to leak air and liquid, which reduces the reliability of battery use. The present invention provides a battery cover structure, in which the pole body 3 of the cover structure is integrally connected with the limiting part 4, the positioning piece 5 of the cover structure is integrally connected with the positioning sleeve 6, the cover body 1 of the cover structure is formed by stamping aluminum, the positioning groove 10, the block 11 and the limiting part 4 of the cover structure are all rectangular, the pole body 3 of the cover structure is arranged in the mounting hole 2, and the limiting part 4 is arranged on the cover The bottom surface of the plate body 1, the positioning member 5 is arranged on the top surface of the cover body 1, the block 11 is embedded in the positioning groove 10, the block 11 is connected to the other end of the pole body 3, the rectangular positioning groove 10 can limit the rotation of the rectangular block 11, and can be used to prevent the pole body 3 from moving and rotating relative to the cover body 1. The positioning sleeve 6 of the cover structure is penetrated into the mounting hole 2 and wraps the outer periphery of the pole body 3, which can be used to prevent the pole body 3 from shifting to one side. The cover structure realizes the center positioning of the pole body 3 in the mounting hole 2, so that the center line of the pole body 3 is maintained at the center line position of the mounting hole 2, the positioning is accurate, the sealing is improved, and the reliability of battery use is ensured.
[0038] Preferably, the battery cover structure further includes a sealing ring 7 , which is sleeved on the pole body 3 , and the sealing ring 7 is arranged between the limiting portion 4 and the bottom surface of the cover body 1 .
[0039] Specifically, the sealing ring 7 is made of fluororubber, has a certain compression capacity, generally can be compressed by 20-40%, has electrolyte resistance, and effectively solves the sealing problem of the battery cover structure.
[0040] Preferably, at least one slot 8 is provided on the top surface of the cover body 1 around the mounting hole 2 , and at least one protrusion 9 is provided on one side of the positioning member 5 around the positioning sleeve 6 , and at least one protrusion 9 is respectively embedded in at least one slot 8 .
[0041] Specifically, since at least one locking protrusion 9 is respectively embedded in at least one locking groove 8 , the rotation of the positioning member 5 is restricted, thereby ensuring the torsion resistance of the pole body 3 .
[0042] Preferably, a connection hole is provided on the clamping block 11, an annular stepped groove is provided on the other end of the pole body 3, the other end of the pole body 3 is fixed in the connection hole, and the clamping block 11 is located on the peripheral side of the connection hole and embedded in the annular stepped groove.
[0043] Specifically, the other end of the pole body 3 is connected to the inner wall of the connecting hole by laser welding. Since the clamping block 11 is located on the peripheral side of the connecting hole and embedded in the annular stepped groove, the positioning and the welding size of the other end of the pole body 3 can be effectively guaranteed. Since the area of the clamping block 11 is larger than the end area of the pole body 3, the problem of over-current heat dissipation of the pole can be effectively solved, and the over-current capacity of the pole can be improved.
[0044] Preferably, the positioning member 5 is a plastic positioning member.
[0045] Specifically, the plastic positioning piece plays an insulating role, and the pole body 3 and the cover body 1 are insulated by the plastic positioning piece.
[0046] Preferably, at least two injection holes 12 are provided on the cover body 1 , and the battery cover structure further includes at least two deceleration valves 13 , and the at least two deceleration valves 13 are respectively connected to the at least two injection holes 12 .
[0047] Specifically, there are two injection holes 12. When the cover body 1 is connected to the opening of the battery shell, when the electrolyte is injected into the battery shell, one injection hole 12 is used for injection, and the other injection hole 12 is evacuated or a combination of them is used to ensure that the battery shell maintains a negative pressure state, so that the electrolyte can be injected quickly and smoothly, reducing the injection time and improving production efficiency.
[0048] Preferably, an explosion-proof hole 14 is provided on the cover body 1 , and the battery cover structure includes an explosion-proof valve 15 , which is connected to the explosion-proof hole 14 .
[0049] Specifically, an explosion-proof valve protective film 17 is provided on the explosion-proof hole 14, and the explosion-proof valve 15 is an anisotropic explosion-proof valve, and the interior is processed by aluminum notching to ensure that the pressure inside the battery shell will be released directionally from the anisotropic explosion-proof valve when it exceeds a certain pressure, generally 0.4-1.0Mpa.
[0050] Preferably, the battery cover structure further includes an insulating sheet 16 , one side of the insulating sheet 16 covers the bottom surface of the cover body 1 .
[0051] Specifically, the insulating sheet 16 is a plastic insulating sheet, and the insulating sheet 16 is used to insulate the cover body 1 and the inside of the battery shell;
[0052] Preferably, the mounting hole 2, the injection hole 12 and the explosion-proof hole 14 are penetrated by an insulating sheet 16, and the other side of the insulating sheet 16 is provided with a limiting groove around the mounting hole 2, the limiting groove is rectangular, and the rectangular limiting part 4 is embedded in the rectangular limiting groove.
[0053] Specifically, a physical minimum insulation gap limit is provided between the limiting portion 4 and the other side of the insulating sheet 16, so as to ensure that when the sealing ring 7 is abnormally compressed, the minimum electrical gap is maintained to ensure the safety of the battery.
[0054] Preferably, there are two poles, which are a positive pole and a negative pole, respectively, and are respectively arranged on the cover body 1 .
[0055] Specifically, the negative electrode column is a copper-aluminum composite material, and the positive electrode column is an aluminum material.
[0056] A battery comprising:
[0057] A battery cover structure;
[0058] The shell is provided with an opening, the cover body 1 is connected to the opening, and the shell is provided with an electrolyte;
[0059] The battery cell is arranged in the shell.
[0060] In summary, when the battery cover structure provided by the present invention is implemented on the battery, the pole body 3 of the cover structure is arranged in the mounting hole 2, the limit part 4 is arranged on the bottom surface of the cover body 1, the positioning member 5 is arranged on the top surface of the cover body 1, the block 11 is embedded in the positioning groove 10, and the other end of the pole body 3 is connected to the inner side wall of the connection hole by laser welding, which can be used to prevent the pole body 3 from moving and rotating relative to the cover body 1. At the same time, at least one clamping protrusion 9 is respectively embedded in at least one clamping groove 8, which limits the rotation of the positioning member 5, thereby ensuring the torsion resistance of the pole body 3. The positioning sleeve 6 of the cover structure is passed through the mounting hole 2 and wraps the outer periphery of the pole body 3, which can be used to prevent the pole body 3 from shifting to one side. The cover structure realizes the center positioning of the pole body 3 in the mounting hole 2, so that the center line of the pole body 3 is kept at the center line position of the mounting hole 2, and the positioning is accurate, the sealing is improved, and the reliability of the battery is ensured.
[0061] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A battery cover structure, characterized in that: The cover plate structure comprises: A cover plate body, wherein the cover plate body is provided with a mounting hole; A pole, the pole comprising a pole body and a limiting portion arranged at one end of the pole body, the pole body being arranged in the mounting hole, and the limiting portion being arranged on the bottom surface of the cover body; A positioning piece, wherein a raised positioning sleeve is provided on one side of the positioning piece, a positioning groove is provided on the other side of the positioning piece, a clamping block is embedded in the positioning groove, a positioning hole is formed inside the positioning sleeve, the positioning sleeve is passed through the mounting hole and wrapped around the outer circumference of the pole body, the positioning piece is arranged on the top surface of the cover body, and the other end of the pole body is connected to the clamping block.
2. A battery cover structure according to claim 1, characterized in that: The battery cover structure also includes a sealing ring, which is sleeved on the pole body and arranged between the limiting portion and the bottom surface of the cover body.
3. A battery cover structure according to claim 1, characterized in that: The top surface of the cover body is located on the peripheral side of the mounting hole and is provided with at least one slot, and one side of the positioning member is located on the peripheral side of the positioning sleeve and is provided with at least one protrusion, and at least one protrusion is respectively embedded in at least one slot.
4. A battery cover structure according to claim 1, characterized in that: The clamping block is provided with a connecting hole, the other end of the pole body is provided with an annular stepped groove, the other end of the pole body is fixed in the connecting hole, and the clamping block is located on the peripheral side of the connecting hole and embedded in the annular stepped groove.
5. A battery cover structure according to claim 1, characterized in that: The positioning groove and the clamping block are rectangular.
6. A battery cover structure according to claim 1, characterized in that: The positioning piece is a plastic positioning piece.
7. A battery cover structure according to claim 1, characterized in that: The cover plate body is provided with at least two injection holes, and the battery cover plate structure further comprises at least two deceleration valves, and the at least two deceleration valves are respectively connected to the at least two injection holes.
8. A battery cover structure according to claim 1, characterized in that: The battery cover structure also includes an insulating sheet, one side of which covers the bottom surface of the cover body.
9. A battery, characterized in that: include: A battery cover structure according to any one of claims 1 to 8; A shell, wherein the shell is provided with an opening, the cover body is connected to the opening, and an electrolyte is provided in the shell; A battery core is arranged in the shell.