CN218472228U - Lithium battery terminal structure - Google Patents
Lithium battery terminal structure Download PDFInfo
- Publication number
- CN218472228U CN218472228U CN202222527156.8U CN202222527156U CN218472228U CN 218472228 U CN218472228 U CN 218472228U CN 202222527156 U CN202222527156 U CN 202222527156U CN 218472228 U CN218472228 U CN 218472228U
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- China
- Prior art keywords
- pole
- hole
- nail
- terminal structure
- lithium battery
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 42
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 4
- 150000002641 lithium Chemical class 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 206010011469 Crying Diseases 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to a power battery technical field discloses a lithium cell terminal structure, and lithium cell terminal structure includes: the shell is provided with a mounting hole; the pole column penetrates through the mounting hole, a pole column hole is formed in the upper end of the pole column, and the pole column hole is of a blind hole structure; and the plugging nail is connected with the pole, is arranged in the pole hole and is used for plugging the pole hole. The utility model provides a lithium battery terminal structure can improve the sealing capacity of utmost point post side through the utmost point post hole of shutoff nail shutoff utmost point post upper end to the generating line welding for the battery package provides location structure.
Description
Technical Field
The utility model relates to a power battery technical field especially relates to a lithium battery terminal structure.
Background
The lithium battery has the advantages of small volume, high energy density, long service life, environmental protection and the like, and is widely applied to industries such as automobiles, electronic products, energy storage systems and the like.
In the development of power battery technology, simplifying the structure of a battery monomer, improving the battery safety and increasing the energy density of the battery are important research directions of the battery technology. The existing power battery has the following defects and shortcomings: because the upper end of terminal generally is equipped with the blind hole, the sealed bad problem takes place easily here, has the weeping risk, and the welding of generating line and utmost point post lacks location structure.
Therefore, a terminal structure of a lithium battery is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
Based on above, an object of the utility model is to provide a lithium cell terminal structure can improve the sealing capacity of utmost point post side to the generating line welding for the battery package provides location structure.
In order to achieve the purpose, the utility model adopts the following technical proposal:
provided is a terminal structure of a lithium battery, including:
the shell is provided with a mounting hole;
the pole column penetrates through the mounting hole, a pole column hole is formed in the upper end of the pole column, and the pole column hole is of a blind hole structure; and
the plugging nail is connected with the pole, is arranged in the pole hole and is used for plugging the pole hole.
Specifically, the pole is installed on the installation hole of the shell in a penetrating mode, the pole hole is formed in the upper end face, exposed outside the shell, of the pole, and the plugging nail is arranged in the pole hole and used for plugging the pole hole, so that the sealing capacity of the pole side is improved. Simultaneously, the generating line of battery package and the one end that utmost point post is connected can with the shutoff nail butt to bus welding for the battery package provides the location.
As an optional technical scheme of the terminal structure of the lithium battery, the height of the highest point of the blocking nail does not exceed the height of the upper end face of the pole.
As an optional technical scheme of the terminal structure of the lithium battery, the highest point of the plugging nail is lower than the upper end face of the pole to form a preformed hole structure, so that the bus bar is conveniently positioned when a battery pack is welded.
As an optional technical scheme of the terminal structure of the lithium battery, the height difference d2 between the highest point of the plugging nail and the upper end face of the pole is 0.1-0.4 mm, and therefore welding slag is prevented from being attached to the upper surface of the pole after the plugging nail is welded, and subsequent welding of an integral module is affected.
As an optional technical scheme of the terminal structure of the lithium battery, the lower surface of the blocking nail and the bottom of the pole column hole are arranged at intervals, so that welding protrusions are prevented from being formed after the pole column hole and the current collecting disc are welded, and the installation and connection of the blocking nail are affected.
As an optional technical solution of the terminal structure of the lithium battery, a distance d3 between the lower surface of the plugging nail and the bottom of the post hole is 0.4mm-1.2mm.
As an optional technical scheme of the terminal structure of the lithium battery, the pole hole is set to be a conical hole structure with the inner diameter being large at the top and small at the bottom, and the plugging nail is set to be a circular truncated cone structure matched with the pole hole so as to be convenient for positioning and mounting of the plugging nail in the pole hole.
As an optional technical scheme of the lithium battery terminal structure, the diameter phi 1 of the lower surface of each plugging nail is 3.5mm-4.5mm, the diameter phi 2 of the upper surface of each plugging nail is 4.8mm-5.5mm, and the height d1 of each plugging nail is 1.5mm-2.3mm.
As an optional technical scheme of the terminal structure of the lithium battery, the flatness of the upper surface of the blocking nail is not more than 0.1mm.
As an optional technical scheme of the terminal structure of the lithium battery, the plugging nail is connected with the pole in a welding mode. Particularly, the shutoff nail adopts outside laser welding with being connected of utmost point post, and laser is 90 contained angles with the upper surface of shutoff nail during the welding, avoids the shutoff nail after the welding, has the welding slag to adhere to the upper surface at utmost point post to influence the follow-up welding of whole module.
As an optional technical solution of the terminal structure of the lithium battery, the terminal is connected to an anode output end of the battery cell, and the housing is connected to a cathode output end of the battery cell.
As an optional technical solution of the terminal structure of the lithium battery, the housing is made of a conductive alloy material.
As an optional technical solution of the terminal structure of the lithium battery, the terminal structure of the lithium battery further includes:
and the insulating sealing ring penetrates through the mounting hole and is used for plugging a gap between the pole column and the shell and insulating the pole column from the shell.
The utility model has the advantages that:
the utility model provides a lithium cell terminal structure's utmost point post runs through to be installed on the mounting hole of casing, and utmost point post exposes to be equipped with the utmost point post hole on the outside up end of casing, and the shutoff nail is located utmost point post downthehole in order to be used for shutoff utmost point post hole to improve the sealing ability of utmost point post side. Simultaneously, the one end that generating line and utmost point post are connected can with the shutoff nail butt to the generating line welding for the battery package provides the location.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a top view of a terminal structure of a lithium battery provided by the present invention;
fig. 2 is a cross-sectional view of a terminal structure of a lithium battery provided by the present invention;
fig. 3 is a bottom view of the plugging nail provided by the present invention;
fig. 4 is a front view of the plugging nail provided by the present invention.
In the figure:
1. a housing; 2. a pole column; 21. a post hole; 3. blocking the nail; 4. and (5) insulating a sealing ring.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment provides a lithium battery terminal structure, which is used as a component of a power battery and is used for electrically connecting a battery core of the power battery with electrical equipment. As shown in fig. 1-4, the lithium battery terminal structure includes a housing 1, a pole post 2, a plugging nail 3 and an insulating seal ring 4, a mounting hole is formed in the housing 1, the pole post 2 is arranged in the mounting hole in a penetrating manner, a pole post hole 21 is formed in the upper end of the pole post 2, the pole post hole 21 is of a blind hole structure, the plugging nail 3 is connected with the pole post 2, the plugging nail 3 is arranged in the pole post hole 21, the plugging nail 3 is used for plugging the pole post hole 21, the insulating seal ring 4 is also arranged in the mounting hole in a penetrating manner, and the insulating seal ring 4 can plug a gap between the pole post 2 and the housing 1.
Specifically, the terminal post 2 of the lithium battery terminal structure provided in this embodiment is installed on the installation hole of the housing 1 in a penetrating manner, the upper end surface of the terminal post 2 exposed outside the housing 1 is provided with a terminal post hole 21, and the plugging nail 3 is arranged in the terminal post hole 21 to plug the terminal post hole 21, so as to improve the sealing capability of the terminal post 2 side. Simultaneously, the one end that generating line and utmost point post 2 are connected can with 3 butts of shutoff nail to the generating line welding for the battery package provides the location.
Optionally, the pole hole 21 is a tapered hole structure with a large upper inner diameter and a small lower inner diameter, and the plugging nail 3 is a circular truncated cone structure matched with the pole hole 21, so that the plugging nail 3 can be positioned and installed in the pole hole 21.
Furthermore, the diameter phi 1 of the lower surface of the plugging nail 3 is 3.5mm-4.5mm, the diameter phi 2 of the upper surface of the plugging nail 3 is 4.8mm-5.5mm, and the height d1 of the plugging nail 3 is 1.5mm-2.3mm.
Preferably, the flatness of the upper surface of the occlusion nail 3 is not more than 0.1mm.
Preferably, the plugging nail 3 passes through welded connection with utmost point post 2 to avoid the plugging nail 3 to drop from utmost point post 2. Particularly, the shutoff nail 3 adopts outside laser welding with being connected of utmost point post 2, and laser is 90 contained angles with the upper surface of shutoff nail 3 during the welding, avoids the shutoff nail 3 after the welding, has the welding slag to adhere to the upper surface of utmost point post 2 to influence the follow-up welding of whole module.
In other implementations of the utility model, the plugging nail 3 can also be connected with the pole 2 through screw connection and other modes.
Furthermore, the height of the highest point of the plugging nail 3 is not more than the height of the upper end surface of the pole 2. Preferably, in this embodiment, the highest point of the blocking nail 3 is lower than the upper end surface of the post 2 to form a preformed hole structure, so as to facilitate positioning for a bus bar during welding of a battery pack. On the other hand, can also avoid the shutoff nail 3 after the welding, have the welding slag to adhere to the upper surface at utmost point post 2 to influence the follow-up welding of whole module.
Specifically, the height difference d2 between the highest point of the plugging nail 3 and the upper end face of the pole 2 is 0.1mm-0.4mm.
Optionally, the lower surface of the plugging nail 3 and the bottom of the pole hole 21 are arranged at intervals, so that a welding projection is prevented from being formed after the pole hole 21 and the current collecting disc are welded, and the installation and connection of the plugging nail 3 are affected.
Preferably, the distance d3 between the lower surface of the blocking nail 3 and the bottom of the pole hole 21 is 0.4mm-1.2mm.
Optionally, the depth of the pole hole 21 is 2mm-3.9mm.
Optionally, the pole 2 is connected with the positive output end of the battery cell, the casing 1 is connected with the negative output end of the battery cell, and the casing 1 is made of a conductive alloy material.
Preferably, the housing 1 is made of steel or a copper alloy.
Preferably, the insulating seal ring 4 is made of an insulating soft material such as rubber, and can insulate the pole post 2 from the housing 1.
It should be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (13)
1. A lithium battery terminal structure, comprising:
the device comprises a shell (1), wherein a mounting hole is formed in the shell (1);
the pole column (2) penetrates through the mounting hole, a pole column hole (21) is formed in the upper end of the pole column (2), and the pole column hole (21) is of a blind hole structure; and
the plugging nail (3) is connected with the pole (2), the plugging nail (3) is arranged in the pole hole (21), and the plugging nail (3) is used for plugging the pole hole (21).
2. The lithium battery terminal structure according to claim 1, characterized in that the height of the highest point of the blocking nail (3) does not exceed the height of the upper end surface of the pole (2).
3. The lithium battery terminal structure according to claim 2, characterized in that the height of the highest point of the blocking nail (3) is lower than the height of the upper end surface of the pole (2).
4. The lithium battery terminal structure according to claim 3, characterized in that a height difference d2 between the highest point of the blocking nail (3) and the upper end face of the pole (2) is 0.1mm-0.4mm.
5. The lithium battery terminal structure according to claim 1, wherein a lower surface of the blocking nail (3) is spaced from a bottom of the post hole (21).
6. The lithium battery terminal structure according to claim 5, wherein a distance d3 between a lower surface of the plugging nail (3) and a bottom of the post hole (21) is 0.4mm to 1.2mm.
7. The lithium battery terminal structure according to claim 1, wherein the pole hole (21) is a conical hole structure with a large inner diameter at the top and a small inner diameter at the bottom, and the plugging nail (3) is a circular truncated cone structure matched with the pole hole (21).
8. The lithium battery terminal structure according to claim 7, wherein a diameter Φ 1 of a lower surface of the plugging nail (3) is 3.5mm to 4.5mm, a diameter Φ 2 of an upper surface of the plugging nail (3) is 4.8mm to 5.5mm, and a height d1 of the plugging nail (3) is 1.5mm to 2.3mm.
9. The lithium battery terminal structure according to claim 7, wherein the flatness of the upper surface of the plugging nail (3) does not exceed 0.1mm.
10. The lithium battery terminal structure according to any one of claims 1-9, wherein the blocking peg (3) is connected to the post (2) by welding.
11. The lithium battery terminal structure according to any one of claims 1 to 9, wherein the pole (2) is connected to a positive output end of a battery cell, and the housing (1) is connected to a negative output end of the battery cell.
12. The lithium battery terminal structure as claimed in claim 11, characterized in that the case (1) is made of a conductive alloy material.
13. The lithium battery terminal structure according to claim 11, further comprising:
and the insulating sealing ring (4) penetrates through the mounting hole, and the insulating sealing ring (4) is used for plugging a gap between the pole (2) and the shell (1) and insulating the pole (2) and the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222527156.8U CN218472228U (en) | 2022-09-23 | 2022-09-23 | Lithium battery terminal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222527156.8U CN218472228U (en) | 2022-09-23 | 2022-09-23 | Lithium battery terminal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218472228U true CN218472228U (en) | 2023-02-10 |
Family
ID=85145025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222527156.8U Active CN218472228U (en) | 2022-09-23 | 2022-09-23 | Lithium battery terminal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218472228U (en) |
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2022
- 2022-09-23 CN CN202222527156.8U patent/CN218472228U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |