Battery cover plate, battery shell and battery monomer

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cover plate, a battery shell and a battery monomer. The battery cover plate comprises a cover body, a pole, a sealing ring and a rubber coating ring, the pole comprises a pole body and a base plate, and an annular groove is formed in the side wall of the pole body in the circumferential direction. The sealing ring comprises a ring body and a reinforcing ring which are arranged on the column body in a sleeving mode, the ring body is clamped between the cover body and the base plate, and the inner side wall of the ring body abuts against the side wall of the column body; the reinforcing ring extends into the mounting hole and is positioned between the side wall of the column body and the hole wall of the mounting hole; an extending part is arranged on the inner side wall of the sealing ring, and the extending part can be clamped into the annular groove and abut against the groove side wall of the annular groove. The column body is sleeved with the rubber coating ring, and at least part of the inner wall of the rubber coating ring abuts against the groove bottom and the groove side wall of the annular groove; the side, facing the mounting hole, of the rubber coating ring is provided with a protruding part, and the protruding part is clamped between the hole wall of the mounting hole and the outer side wall of the reinforcing ring. The pool cover plate is high in space utilization rate, good in sealing effect and convenient to assemble.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery cover, a battery casing and a battery cell. Background Technology

[0002] Typically, a battery cover includes a cover body, terminals, a sealing ring, and an overlay ring. In actual production, the sealing ring is fitted onto the terminals, and after the terminals are assembled with the cover body and lower plastic inserts, upper plastic is injected for fixation. However, since the sealing ring is usually rectangular and the outer wall of the terminals has an annular groove (for at least part of the overlay ring to extend into and engage), if the sealing ring is not properly installed by the worker, or if it shifts due to material transfer after assembly, the sealing ring can easily become stuck in the annular groove of the terminals, affecting the sealing performance of the battery cover. Furthermore, the pressure exerted by the overlay ring during assembly can cause the sealing ring to crack due to the edge of the annular groove, leading to air leakage from the battery cover.

[0003] Therefore, there is an urgent need to propose a battery cover, battery casing, and battery cell to solve the above problems. Utility Model Content

[0004] The primary objective of this invention is to provide a battery cover that has high space utilization, good sealing performance, and is easy to assemble.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Battery cover, including:

[0007] A cover body, wherein the cover body is provided with mounting holes;

[0008] The electrode post includes a column and a base connected in sequence. An annular groove is provided along the circumferential side wall of the column. The column passes through the mounting hole. The base is located on the side of the cover body facing the battery cell.

[0009] A sealing ring, comprising a ring body and a reinforcing ring sequentially fitted onto the column, the ring body being sandwiched between the cover body and the chassis, the reinforcing ring extending into the mounting hole, and the inner sidewall of the sealing ring having an extension portion that can be engaged in the annular groove and abut against the groove sidewall of the annular groove facing the chassis.

[0010] A rubber-coated ring is sleeved on the column and located on the side of the cover body away from the chassis. At least a portion of the inner wall of the rubber-coated ring abuts against the bottom of the annular groove and the groove sidewall away from the chassis. The rubber-coated ring has a protrusion facing the mounting hole, and the protrusion is sandwiched between the hole wall of the mounting hole and the outer wall of the reinforcing ring.

[0011] As an optional technical solution for the battery cover, the side surface of the ring body facing the cover body extends beyond the groove sidewall of the annular groove facing the chassis, and the extension extends from the inner sidewall of the reinforcing ring to the inner sidewall of the ring body.

[0012] As an optional technical solution for the battery cover, the extension extends circumferentially along the inner sidewall of the sealing ring and is arranged in a closed loop.

[0013] As an optional technical solution for the battery cover, the reinforcing ring is flush with the side of the chassis opposite to the side of the chassis and the extension is also flush with the rubber-coated ring.

[0014] As an optional technical solution for the battery cover, the cover body is provided with a first slot, the first slot extends circumferentially along the mounting hole and is arranged in a closed loop, and the rubber-coated ring is provided with a locking strip that matches the shape of the first slot, the locking strip being engaged in the first slot.

[0015] As an optional technical solution for the battery cover, the cover body has a plurality of second slots on the side facing the rubber-coated ring. The second slots are spaced apart along the outer periphery of the first slot and communicate with the first slot. The rubber-coated ring has a locking block that matches the shape of the second slot, and the locking block is locked in the second slot.

[0016] As an optional technical solution for the battery cover, the end of the column facing away from the chassis is provided with a groove. The groove extends circumferentially along the side wall of the column and is arranged in a closed loop. The groove wall facing the cover body is flush with the side of the rubber-coated ring facing away from the cover body.

[0017] As an optional technical solution for the battery cover, the battery cover also includes a lower plastic, on which an assembly hole is provided. The lower plastic is attached to the side of the cover body away from the rubber-coated ring. The assembly hole is directly opposite to the mounting hole. The column passes through the assembly hole and the mounting hole in sequence. The base abuts against the lower plastic, and the ring body is located inside the assembly hole.

[0018] The second objective of this invention is to provide a battery housing that has a good sealing effect and is easy to assemble.

[0019] To achieve this objective, the present invention adopts the following technical solution:

[0020] The battery casing includes an outer shell and the aforementioned battery cover plate, wherein an opening is provided on one side of the outer shell, and the cover body is disposed on the opening.

[0021] The third objective of this invention is to provide a battery cell that has good sealing performance and is easy to assemble.

[0022] To achieve this objective, the present invention adopts the following technical solution:

[0023] A battery cell includes a battery cell and a battery casing, wherein the battery cell is located inside the battery casing.

[0024] The beneficial effects of this utility model are:

[0025] The battery cover provided by this utility model includes a cover body, a terminal post, a sealing ring, and an insulated ring. On one hand, the sealing ring includes a ring body and a reinforcing ring. The ring body is sandwiched between the cover body and the base, providing insulation between the cover body and the base of the terminal post. The reinforcing ring extends into the mounting hole, improving the sealing performance of the sealing ring without occupying the thickness space of the battery cover, resulting in high space utilization. Simultaneously, the inner wall of the sealing ring has an extension portion that can fit into an annular groove and abut against the groove sidewall, increasing the connection strength between the sealing ring and the terminal post, thus improving the sealing performance of the battery cover. On the other hand, the insulated ring is sleeved on the terminal post, with at least a portion of its inner wall abutting against the bottom and sidewall of the annular groove, achieving a wrapping connection between the insulated ring and the terminal post, improving the sealing performance of the battery cover. Furthermore, the insulated ring has a protrusion facing the mounting hole, sandwiched between the hole wall and the outer wall of the reinforcing ring, increasing the contact area between the insulated ring and the sealing ring, further improving the sealing performance of the battery cover. On the other hand, in actual production, the extension can facilitate the positioning of the sealing ring when it is fitted onto the terminal post, preventing the sealing ring from being misaligned and stuck in the annular groove; and the cooperation between the reinforcing ring and the protrusion can not only position the installation of the rubber ring, but also prevent the battery cover from leaking air due to the sealing ring being squeezed and deformed by the cover body. Attached Figure Description

[0026] Figure 1 This is a partial cross-sectional view of the battery cover provided in an embodiment of the present utility model;

[0027] Figure 2 yes Figure 1 A magnified view of a portion at point A;

[0028] Figure 3 This is a schematic diagram of the structure of the cover body of the battery cover provided in this embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the terminal post structure of the battery cover provided in this embodiment of the utility model;

[0030] Figure 5 This is a first structural schematic diagram of the sealing ring of the battery cover provided in this embodiment of the utility model;

[0031] Figure 6 This is a schematic diagram of the second structure of the sealing ring of the battery cover provided in this embodiment of the utility model.

[0032] Figure 7 This is a schematic diagram of the first structure of the encapsulated ring of the battery cover provided in this embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the second structure of the rubber-coated ring of the battery cover provided in this embodiment of the utility model.

[0034] In the picture:

[0035] 100. Cover body; 110. Mounting hole; 120. First slot; 130. Second slot; 200. Pole post; 210. Post body; 220. Base; 230. Annular groove; 300. Sealing ring; 310. Ring body; 320. Reinforcing ring; 330. Extension; 400. Rubber-coated ring; 410. Protrusion; 420. Locking strip; 430. Locking block; 500. Lower plastic. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] This embodiment provides a battery cover that has high space utilization, good sealing effect and is easy to assemble.

[0041] Specifically, such as Figures 1 to 8 As shown, the battery cover includes a cover body 100, terminal posts 200, a sealing ring 300, and an adhesive ring 400. The cover body 100 has mounting holes 110 for mounting the terminal posts 200. The terminal post 200 includes a column 210 and a base 220 connected in sequence. An annular groove 230 is provided circumferentially along the side wall of the column 210. The column 210 passes through the mounting holes 110, and the base 220 is located on the side of the cover body 100 facing the battery cell. The sealing ring 300 includes a ring body 310 and a reinforcing ring 320 sequentially fitted onto the column 210. The ring body 310 is sandwiched between the cover body 100 and the base 220. The inner sidewall of the ring body 310 abuts against the sidewall of the column 210 located between the annular groove 230 and the base 220. The reinforcing ring 320 extends into the mounting hole 110 and is located between the sidewall of the column 210 and the hole wall of the mounting hole 110. The inner sidewall of the sealing ring 300 is provided with an extension 330, which can be inserted into the annular groove 230 and abut against the groove sidewall of the annular groove 230 facing the base 220. The rubber-coated ring 400 is sleeved on the column 210 and located on the side of the cover body 100 away from the chassis 220. At least a portion of the inner wall of the rubber-coated ring 400 abuts against the bottom of the annular groove 230 and the groove side wall away from the chassis 220. The rubber-coated ring 400 has a protrusion 410 facing the mounting hole 110, and the protrusion 410 is sandwiched between the hole wall of the mounting hole 110 and the outer side wall of the reinforcing ring 320.

[0042] Based on the above design, the sealing ring 300 includes a ring body 310 and a reinforcing ring 320. The ring body 310 is sandwiched between the cover body 100 and the chassis 220, which can insulate and isolate the cover body 100 and the chassis 220 of the terminal post 200. The reinforcing ring 320 extends into the mounting hole 110, which can improve the sealing performance of the sealing ring 300 without occupying the thickness space of the battery top cover, thus achieving high space utilization. At the same time, the inner sidewall of the sealing ring 300 is provided with an extension 330, which can be inserted into the annular groove 230 and abut against the groove sidewall of the annular groove 230, increasing the connection strength between the sealing ring 300 and the post 210 and improving the sealing performance of the battery cover. The rubber-coated ring 400 is sleeved on the column 210, and at least a portion of its inner wall abuts against the bottom and sidewall of the annular groove 230, thereby achieving a wrapping connection between the rubber-coated ring 400 and the column 210 and improving the sealing performance of the battery cover. At the same time, the rubber-coated ring 400 has a protrusion 410 facing the mounting hole 110. The protrusion 410 is sandwiched between the hole wall of the mounting hole 110 and the outer side wall of the reinforcing ring 320, increasing the contact area between the rubber-coated ring 400 and the sealing ring 300, and further improving the sealing performance of the battery cover. In actual production, the sealing ring 300 is elastic and can be fitted onto the column 210. The extension 330 is engaged with the groove sidewall of the annular groove 230 facing the chassis 220, which positions the sealing ring 300 during assembly. This prevents the sealing ring 300 from being misaligned or from shifting into the annular groove 230 due to material transfer, thus preventing air leakage from the battery cover. When assembling the rubber-coated ring 400, the protrusion 410 cooperates with the reinforcing ring 320 to achieve the positioning and installation of the rubber-coated ring 400. The engaging connection between the reinforcing ring 320 and the protrusion 410 can prevent air leakage from the battery cover caused by the sealing ring 300 being squeezed and deformed by the cover body 100.

[0043] Optionally, continue as follows Figure 2 As shown, the side surface of the ring body 310 facing the cover body 100 extends beyond the groove sidewall of the annular groove 230 facing the chassis 220, and the extension 330 extends from the inner sidewall of the reinforcing ring 320 to the inner sidewall of the ring body 310.

[0044] In some other embodiments, the surface of the ring body 310 facing the cover body 100 does not extend beyond the sidewall of the annular groove 230 facing the chassis 220, and the extension 330 is only located on the inner sidewall of the reinforcing ring 320. Therefore, the location of the extension 330 can be set according to actual needs.

[0045] In this embodiment, the inner wall of the ring body 310 and the inner wall of the reinforcing ring 320 are flush, making it easy to connect the extension 330 to the inner wall of the sealing ring 300.

[0046] Optionally, the extension 330 extends circumferentially along the inner sidewall of the sealing ring 300 and is arranged in a closed loop, increasing the volume of the sealing ring 300 in the annular groove 230, increasing the connection strength between the sealing ring 300 and the pole post 200, and improving the sealing performance of the sealing ring 300.

[0047] Optionally, the reinforcing ring 320 and the extension 330 are flush with the side opposite to the chassis 220 and both abut against the rubber-coated ring 400, which facilitates the integral molding of the sealing ring 300.

[0048] Optionally, continue as follows Figure 3 As shown, in order to increase the connection strength between the cover body 100 and the rubber ring 400, the cover body 100 is provided with a first slot 120. The first slot 120 extends along the outer periphery of the mounting hole 110 and is arranged in a closed loop. The rubber ring 400 is provided with a locking strip 420 that matches the shape of the first slot 120. The locking strip 420 is locked in the first slot 120.

[0049] Furthermore, the cover body 100 has a plurality of second slots 130 on the side facing the rubber ring 400. The second slots 130 are spaced apart along the outer periphery of the first slot 120 and communicate with the first slot 120. The rubber ring 400 has a locking block 430 that matches the shape of the second slot 130. The locking block 430 is locked in the second slot 130, further increasing the connection strength between the cover body 100 and the rubber ring 400.

[0050] Optionally, continue as follows Figure 4 As shown, the end of the column 210 facing away from the chassis 220 is provided with a slot. The slot extends circumferentially along the side wall of the column 210 and is arranged in a closed loop. The slot wall facing the cover body 100 is flush with the side of the rubber ring 400 facing away from the cover body 100. That is, the end of the column 210 facing away from the chassis 220 protrudes from the rubber ring 400, and the radial dimension of the protruding part is smaller, which facilitates the electrical connection between the pole post 200 and external components.

[0051] Optionally, the battery cover also includes a lower plastic 500, which has an assembly hole. The lower plastic 500 is attached to the side of the cover body 100 away from the rubber ring 400. The assembly hole and the mounting hole 110 are directly opposite each other. The column 210 passes through the assembly hole and the mounting hole 110 in sequence. The base 220 abuts against the lower plastic 500. The ring body 310 is located in the assembly hole.

[0052] It should be noted that in this embodiment, the battery cover includes two terminals 200, two sealing rings 300, and two rubber-coated rings 400. The cover body 100 has two mounting holes 110 spaced apart along the length of the cover body 100. The lower plastic 500 has two assembly holes. The terminals 200, sealing rings 300, rubber-coated rings 400, mounting holes 110, and assembly holes correspond one-to-one. The two terminals 200 are a positive terminal 200 and a negative terminal 200, differing only in polarity.

[0053] This embodiment also provides a battery housing that has a good sealing effect and is easy to assemble.

[0054] Specifically, the battery housing includes an outer shell (not shown in the figure) and the aforementioned battery cover plate. An opening is provided on one side of the outer shell, and the cover body 100 is positioned over the opening. Due to the good sealing effect and ease of assembly of the aforementioned battery cover plate, the battery housing exhibits good sealing performance and is easy to assemble.

[0055] This embodiment also provides a battery cell that has good sealing performance and is easy to assemble.

[0056] Specifically, the battery cell includes a cell (not shown in the figure) and the aforementioned battery casing. The cell is located inside the battery casing. Because the aforementioned battery casing has a good sealing effect and is easy to assemble, the battery cell has a good sealing effect and is easy to assemble.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery cover, characterized in that, include: A cover body (100) is provided with mounting holes (110); The pole post (200) includes a column (210) and a base (220) connected in sequence. An annular groove (230) is provided along the circumferential side wall of the column (210). The column (210) passes through the mounting hole (110). The base (220) is located on the side of the cover body (100) facing the battery cell. A sealing ring (300) includes a ring body (310) and a reinforcing ring (320) sequentially fitted onto the column (210). The ring body (310) is sandwiched between the cover body (100) and the chassis (220). The reinforcing ring (320) extends into the mounting hole (110). The inner sidewall of the sealing ring (300) is provided with an extension (330). The extension (330) can be inserted into the annular groove (230) and abut against the groove sidewall of the annular groove (230) facing the chassis (220). A rubber-coated ring (400) is sleeved on the column (210) and located on the side of the cover body (100) away from the chassis (220). At least a portion of the inner wall of the rubber-coated ring (400) abuts against the bottom of the annular groove (230) and the groove sidewall away from the chassis (220). The rubber-coated ring (400) has a protrusion (410) facing the mounting hole (110). The protrusion (410) is sandwiched between the hole wall of the mounting hole (110) and the outer side wall of the reinforcing ring (320).

2. The battery cover according to claim 1, characterized in that, The side surface of the ring body (310) facing the cover body (100) extends beyond the groove sidewall of the annular groove (230) facing the chassis (220), and the extension (330) extends from the inner sidewall of the reinforcing ring (320) to the inner sidewall of the ring body (310).

3. The battery cover according to claim 1, characterized in that, The extension (330) extends circumferentially along the inner sidewall of the sealing ring (300) and is arranged in a closed loop.

4. The battery cover according to claim 1, characterized in that, The reinforcing ring (320) is flush with the side of the chassis (220) opposite to the reinforcing ring (320) and the extension (330) is flush with the side of the chassis (220) opposite to the reinforcing ring (400) and both abut against the rubber-coated ring (400).

5. The battery cover according to claim 1, characterized in that, The cover body (100) is provided with a first slot (120), the first slot (120) extends along the outer periphery of the mounting hole (110) and is arranged in a closed loop, and the rubber-coated ring (400) is provided with a clip (420) that is adapted to the shape of the first slot (120), and the clip (420) is engaged in the first slot (120).

6. The battery cover according to claim 5, characterized in that, The cover body (100) has a plurality of second slots (130) on the side facing the rubber ring (400). The second slots (130) are spaced apart along the outer periphery of the first slot (120) and communicate with the first slot (120). The rubber ring (400) has a locking block (430) that matches the shape of the second slot (130). The locking block (430) is locked in the second slot (130).

7. The battery cover according to claim 1, characterized in that, The end of the column (210) away from the chassis (220) is provided with a slot. The slot extends circumferentially along the side wall of the column (210) and is arranged in a closed loop. The groove wall facing the cover body (100) is flush with the side of the rubber-coated ring (400) away from the cover body (100).

8. The battery cover according to claim 1, characterized in that, The battery cover also includes a lower plastic (500), which has an assembly hole. The lower plastic (500) is attached to the side of the cover body (100) away from the rubber ring (400). The assembly hole is directly opposite the mounting hole (110). The column (210) passes through the assembly hole and the mounting hole (110) in sequence. The base (220) abuts against the lower plastic (500). The ring body (310) is located inside the assembly hole.

9. A battery casing, characterized in that, The device includes a housing and a battery cover as described in any one of claims 1-8, wherein the housing has an opening on one side and the cover body (100) covers the opening.

10. A single battery cell, characterized in that, It includes a battery cell and a battery casing as described in claim 9, wherein the battery cell is located within the battery casing.

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