CN221102241U - Battery cover plate assembly, lithium battery and electric equipment - Google Patents
Battery cover plate assembly, lithium battery and electric equipment Download PDFInfo
- Publication number
- CN221102241U CN221102241U CN202322846096.0U CN202322846096U CN221102241U CN 221102241 U CN221102241 U CN 221102241U CN 202322846096 U CN202322846096 U CN 202322846096U CN 221102241 U CN221102241 U CN 221102241U
- Authority
- CN
- China
- Prior art keywords
- insulating plate
- plate
- base plate
- battery cover
- substrate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 13
- 231100000719 pollutant Toxicity 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a battery cover plate assembly, a lithium battery and electric equipment, and belongs to the technical field of lithium batteries, wherein the cover plate assembly comprises an insulating plate, a substrate and rivets, and the rivets penetrate through the insulating plate and the substrate to connect the insulating plate and the substrate together; a connecting piece is arranged between the insulating plate and the substrate, and the connecting piece enables the insulating plate and the substrate not to move relatively, and simultaneously enables the insulating plate and the substrate to be connected in a sealing way; the connecting piece is circumferentially arranged around the rivet. The lithium battery comprises the cover plate assembly, and the electric equipment comprises the lithium battery. The gap between the base plate and the insulating plate is closed, so that pollutants such as dust particles are prevented from entering the gap between the insulating plate and the base plate, and the pollutants are reduced.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a battery cover plate assembly, a lithium battery and electric equipment.
Background
With the continuous rising of economic globalization process and energy demand, the pursuit of new energy storage units is rapidly becoming a focus of attention in the new energy related fields. The lithium ion battery with the advantages of no memory effect, small self-discharge, high energy density, long cycle life, cleanness, no pollution and the like is widely applied to the fields of electric vehicles, hybrid electric vehicles, portable mobile power supplies and the like. The battery is a central energy storage unit, and the development of the battery is attracting attention.
Traditional battery cover plate assembly, for example, chinese patent literature with bulletin number CN209658240U discloses a lightweight battery cover plate structure, the base plate top is equipped with positive pole location arch and negative pole location arch, positive pole internal resistance piece is located positive pole location arch top, positive pole clamp plate cover in positive pole internal resistance piece top and install on the base plate through the riveting, negative pole insulation board is located negative pole location arch top, negative pole insulation board bottom is equipped with negative pole location protruding complex lower groove cavity, negative pole insulation board top is equipped with the groove cavity, negative pole clamp plate is located in the groove cavity down and install on the base plate through the riveting. Wherein, the cooperation location of insulation board and base plate is mostly hole post cooperation, has the risk that pollutant such as dust particle thing got into in the clearance between insulation board and the base plate, causes the pollutant level to improve. Moreover, when the terminal is stressed, the strength of the hole column in a matching mode is weak, and the deformation resistance is poor.
Disclosure of utility model
1. Technical problem to be solved by the utility model
Aiming at the problems that in the prior art, the matching positioning of an insulating plate and a substrate of a cover plate assembly is mostly hole column matching, and the risk that pollutants such as dust particles enter a gap between the insulating plate and the substrate exists, the utility model provides a battery cover plate assembly.
The utility model also provides a lithium battery, and the battery cover plate assembly is adopted.
The utility model also provides electric equipment, and the lithium battery is adopted.
2. Technical proposal
In order to achieve the above object, the present utility model provides a battery cap assembly including an insulating plate, a base plate, and a rivet penetrating the insulating plate and the base plate to connect the insulating plate and the base plate together; a connecting piece is arranged between the insulating plate and the substrate, and the connecting piece enables the insulating plate and the substrate not to move relatively, and simultaneously enables the insulating plate and the substrate to be connected in a sealing way; the connecting piece is circumferentially arranged around the rivet.
Further, the connecting piece is a first positioning rib which is arranged on one side of the insulating plate, protruding towards the substrate, and the substrate is correspondingly provided with a first positioning groove matched with the first positioning rib.
Further, the first positioning ribs and the first positioning grooves are arranged in a 'back' shape.
Further, the first positioning ribs and the first positioning grooves are provided with one or more groups.
Further, the first positioning ribs and the first positioning grooves are arranged in an oval shape or a round shape.
Further, the electric connector further comprises a terminal, a second positioning rib is arranged on one side, facing the terminal, of the insulating plate, and a second positioning groove matched with the second positioning rib is correspondingly formed in the terminal.
Further, a sealing ring is sleeved on the periphery of the rivet, the longitudinal section of the sealing ring is I-shaped, the upper half part of the sealing ring is positioned between the lower surface of the terminal and the upper surface of the substrate, and the lower half part of the sealing ring is positioned between the lower surface of the substrate and the end part of the rivet.
Further, the device also comprises a stop frame, wherein two ends of the stop frame are of frame structures, and reinforcing ribs are arranged in the frame.
The utility model also provides a lithium battery, which comprises the battery cover plate assembly.
The utility model also provides electric equipment, which comprises the lithium battery.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
(1) According to the battery cover plate assembly, the insulating plate and the base plate are fixed through the rivet and the terminal, the insulating plate is connected with the base plate through the connecting piece, and the connecting piece can enable the insulating plate and the base plate not to move relatively and simultaneously plays a role in sealing the insulating plate and the base plate. The connecting piece is circumferentially arranged around the rivet, so that gaps between the rivet and the substrate and gaps between the rivet and the insulating plate are closed, pollutants such as dust particles are prevented from entering gaps between the insulating plate and the substrate, and the pollutants are reduced.
(2) According to the battery cover plate assembly, the first positioning ribs are clamped with the first positioning grooves, so that the sealing performance of the closed type positioning structure can be improved. The sealing performance can be ensured by the 'back' structure, and simultaneously, the anti-torsion capability and the stress deformation capability of the insulating plate and the base plate can be greatly enhanced, so that the structural strength of the cover plate assembly can be improved. The insulation board and the terminal are connected through the second positioning ribs and the second positioning grooves in a matched mode, and the structural strength of the insulation board and the terminal is improved.
(3) According to the battery cover plate assembly, the longitudinal section of the sealing ring is I-shaped and is sleeved on the outer side of the rivet, the connection tightness of the terminal, the base plate and the rivet is respectively enhanced by the upper half part and the lower half part of the sealing ring, the complete sealing of a battery from the external terminal to the end surface overcurrent channel of the internal rivet is realized, pollutants including electrolyte are isolated from entering, the retention of the pollutants and the crystals is avoided, and the creepage distance requirement of a battery core is reduced.
Drawings
In the drawings, the dimensions and proportions are not representative of the dimensions and proportions of an actual product. The figures are merely illustrative and certain unnecessary elements or features have been omitted for clarity.
FIG. 1 is a schematic view of an exploded view of a cover plate assembly according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of the assembled structure of the cover plate assembly in accordance with an embodiment of the present utility model;
fig. 3 is an enlarged view of the structure at a in fig. 2.
Reference numerals in the schematic drawings illustrate:
1. A terminal; 2. an insulating plate; 201. a first positioning rib; 3. a seal ring; 4. a substrate; 5. a stop rack; 6. and (5) a rivet.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. What has been described herein is merely a preferred embodiment according to the present utility model, and other ways of implementing the utility model will occur to those skilled in the art on the basis of the preferred embodiment, and are within the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Examples
Referring to fig. 1-2, the present embodiment provides a battery cover plate assembly, which includes a terminal 1, an insulating plate 2, a sealing ring 3, a base plate 4, a stop frame 5 and a rivet 6, wherein the rivet 6 sequentially penetrates through the stop frame 5, the base plate 4, the sealing ring 3 and the insulating plate 2 from bottom to top and is connected with the terminal 1, and the terminal 1 and the rivet 6 form an overcurrent structure. Wherein, the insulating plate 2, the sealing ring 3, the base plate 4 and the stopping frame 5 are provided with through holes in the middle, and the rivet 6 penetrates through the through holes to connect the components. A connecting piece is arranged between the insulating plate 2 and the base plate 4, the connecting piece enables the insulating plate 2 and the base plate 4 not to move relatively, and meanwhile the insulating plate 2 and the base plate 4 are connected in a sealing way; the connecting piece is circumferentially arranged around the rivet 6, so that gaps between the rivet 6 and the substrate 4 and gaps between the rivet and the insulating plate 2 are closed, pollutants such as dust particles are prevented from entering gaps between the insulating plate 2 and the substrate 4, and the pollutants are reduced.
Specifically, referring to fig. 1 and 2, in this embodiment, the connecting member is a first positioning rib 201 disposed on a side of the insulating plate 2 facing the substrate 4 and protruding, the substrate 4 is correspondingly provided with a first positioning groove matched with the first positioning rib 201, and the first positioning rib 201 is embedded into the first positioning groove to complete the engagement between the insulating plate 2 and the substrate 4. Furthermore, the first positioning ribs 201 and the first positioning grooves are arranged in a 'return' shape, and the length and width directions of the insulating plate 2 and the base plate 4 can be structurally reinforced by the 'return' first positioning ribs 201 and the first positioning grooves, so that the torsion resistance and the stress deformation resistance of the insulating plate 2 and the base plate 4 are greatly enhanced, and the structural strength of the cover plate assembly is improved.
It should be noted that, the position of the first positioning rib 201 may be set on the upper surface of the substrate 4, the position of the first positioning groove may be set on the lower surface of the insulating plate 2, and the positions of the first positioning groove and the first positioning rib 201 may be interchanged, so that the assembly relationship between the substrate 4 and the insulating plate 2 may be satisfied. The number of the first positioning ribs 201 and the first positioning grooves can be determined according to the size of an actual cover plate assembly, and one or more groups can be arranged, so that the torsion resistance and the stress deformation resistance of cover plate assemblies with different specifications are met.
In addition, when the first positioning rib 201 and the first positioning groove only need to meet the requirement of blocking dust particles, the first positioning rib 201 and the first positioning groove can be arranged in an elliptical shape or a circular shape, and only the first positioning rib 201 and the first positioning groove are required to be in a closed structure.
In this embodiment, as shown in fig. 2, in order to further improve the structural strength of the cover plate assembly, a closed second positioning rib is disposed on one side of the insulating plate 2 facing the terminal 1, and the terminal 1 is correspondingly provided with a second positioning groove matched with the second positioning rib. The second positioning rib and the second positioning groove can also be designed into a 'back' type structure, so that the torsion resistance and the deformation resistance of the terminal 1 and the insulating plate 2 are improved.
In addition to the above-described closed positioning structure, it is also necessary to use a seal ring 3 for maintaining the sealing property of the cover plate assembly structure, as shown in fig. 2, in this embodiment, the seal ring 3 has an "i" shape in longitudinal section, the upper half of the seal ring 3 is located between the lower surface of the terminal 1 and the upper surface of the base plate 4, and the lower half of the seal ring 3 is located between the lower surface of the base plate 4 and the end of the rivet 6. The connection tightness between the terminal 1 and the substrate 4 can be enhanced by the upper half part of the sealing ring 3, the connection tightness between the substrate 4 and the rivet 6 can be enhanced by the lower half part of the sealing ring 3, the complete sealing of the battery from the external terminal 1 to the end surface flow passage of the internal rivet 6 is realized, the entry of pollutants including electrolyte is isolated, the retention of the pollutants and the creepage distance requirement of the battery core is avoided.
In this embodiment, as shown in fig. 1, two ends of the stop frame 5 are in a frame structure, and the inside of the frame is in a hollow design, so that the weight of the stop frame 5 can be reduced, and the energy density of the battery can be further improved. The hollow position is provided with the strengthening rib, and the strengthening rib increases the structural strength of stop frame 5 to improve the overall structural strength of apron subassembly. It should be noted that, the engagement of the stopper 5 and the base plate 4 may be similar to the engagement of the base plate 4 and the insulating plate 2.
Another aspect of the present embodiment provides a lithium battery including the battery cover assembly described above, where the cover assembly has good sealing and torsion and deformation resistance. The cover plate component can be applied to a battery with two end outlet lugs or a same-side double-terminal battery structure with one end outlet lug.
Another aspect of this embodiment provides an electric device, which adopts the above lithium battery, and the electric device may be an electric automobile, a motor, or the like.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (10)
1. A battery cover plate assembly, which is characterized by comprising an insulating plate (2), a base plate (4) and a rivet (6), wherein the rivet (6) penetrates through the insulating plate (2) and the base plate (4) to connect the insulating plate (2) and the base plate (4) together; a connecting piece is arranged between the insulating plate (2) and the base plate (4), the connecting piece enables the insulating plate (2) and the base plate (4) not to move relatively, and meanwhile the insulating plate (2) and the base plate (4) are connected in a sealing mode; the connecting piece is circumferentially arranged around the rivet (6).
2. The battery cover plate assembly according to claim 1, wherein the connecting piece is a first positioning rib (201) arranged on one side of the insulating plate (2) towards the base plate (4), and the base plate (4) is correspondingly provided with a first positioning groove matched with the first positioning rib (201).
3. The battery cover assembly of claim 2, wherein the first locating rib (201) and the first locating groove are configured in a "back" type.
4. A battery cover assembly according to claim 3, wherein the first locating rib (201) and the first locating groove are provided in one or more groups.
5. The battery cover assembly of claim 2, wherein the first positioning ribs (201) and the first positioning grooves are configured in an oval shape or a circular shape.
6. The battery cover plate assembly according to claim 1, further comprising a terminal (1), wherein a second positioning rib is arranged on one side of the insulating plate (2) facing the terminal (1), and a second positioning groove matched with the second positioning rib is correspondingly arranged on the terminal (1).
7. The battery cover plate assembly according to claim 6, wherein the rivet (6) is circumferentially sleeved with a sealing ring (3), the longitudinal section of the sealing ring (3) is in an I shape, the upper half part of the sealing ring (3) is located between the lower surface of the terminal (1) and the upper surface of the substrate (4), and the lower half part of the sealing ring (3) is located between the lower surface of the substrate (4) and the end part of the rivet (6).
8. The battery cover plate assembly according to claim 1, further comprising a stop frame (5), wherein both ends of the stop frame (5) are of a frame structure, and reinforcing ribs are arranged inside the frame.
9. A lithium battery comprising a battery cover assembly according to any one of claims 1-8.
10. A powered device comprising the lithium battery of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322846096.0U CN221102241U (en) | 2023-10-23 | 2023-10-23 | Battery cover plate assembly, lithium battery and electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322846096.0U CN221102241U (en) | 2023-10-23 | 2023-10-23 | Battery cover plate assembly, lithium battery and electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221102241U true CN221102241U (en) | 2024-06-07 |
Family
ID=91306985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322846096.0U Active CN221102241U (en) | 2023-10-23 | 2023-10-23 | Battery cover plate assembly, lithium battery and electric equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221102241U (en) |
-
2023
- 2023-10-23 CN CN202322846096.0U patent/CN221102241U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |