CN209896112U - Square lithium battery top cover structure - Google Patents
Square lithium battery top cover structure Download PDFInfo
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- CN209896112U CN209896112U CN201920842551.0U CN201920842551U CN209896112U CN 209896112 U CN209896112 U CN 209896112U CN 201920842551 U CN201920842551 U CN 201920842551U CN 209896112 U CN209896112 U CN 209896112U
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- pole
- top cover
- injection molding
- cover plate
- post
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- 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
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Abstract
The utility model discloses a square lithium battery top cover structure, which comprises a top cover plate, a pole post assembly and a lower injection molding plate, wherein the top cover plate is provided with a concave pole post hole in a penetrating way, and the pole post hole comprises an anode pole post hole and a cathode pole post hole; the pole post holes are all provided with pole post assemblies, and each pole post assembly comprises a pole post, a sealing ring and an upper injection molding piece; the terminal post comprises a terminal post boss and a terminal post middle end face, the terminal post boss penetrates through the lower injection molding piece and the sealing ring to be matched with the terminal post hole, the terminal post middle end face, the lower injection molding piece and the sealing ring are extruded mutually, an upper injection molding piece is arranged in a gap between the terminal post boss and the top cover plate, the terminal post and the top cover plate are fixed through the upper injection molding piece, and therefore the square lithium battery top cover structure is formed. The square lithium battery top cover of the utility model has simple structure and adopts the traditional injection molding process; the pole holes of the top cover plate are of a concave structure, so that the height from the poles to the upper end face of the top cover plate is greatly reduced, and the utilization rate of the internal space of the battery is improved.
Description
Technical Field
The utility model relates to a secondary battery field especially relates to a square lithium cell top cap structure.
Background
Under the two-wheel drive of national policies and markets, electric vehicles, energy storage industries, and electric tools are rapidly developing, and thus, the demand for batteries is also more and more vigorous. Batteries need to have improved capacity and safety to meet people's needs.
At present, most of secondary battery top covers in the market are of riveting structures, ceramic snap springs and injection molding structures. However, the existing secondary battery top cover has at least the following defects:
(1) the top cover has a complex structure and high cost;
(2) the height of the top cover pole is higher, the utilization rate of the internal space of the battery is lower, and the utilization space of the module is lower;
in view of the above, it is necessary to provide a square lithium battery top cap capable of solving the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a following technical scheme:
a square lithium battery top cover structure comprises a top cover plate, a pole post assembly and a lower injection molding piece, wherein penetrating pole post holes are formed in two sides of the top cover plate, the pole post holes are of a concave structure, and the pole post assembly comprises a pole post, a sealing ring and an upper injection molding piece; the pole column penetrates through the lower injection molding part, the sealing ring and the pole column hole respectively, and the upper injection molding part is embedded with the pole column penetrating through the top cover plate and the concave pole column hole so that the whole top cover part is combined together.
The upper injection molding part is a hollow cylindrical structure which is internally provided with a convex inner cylindrical ring and is externally narrowed in a stepped manner, wherein the upper end of the hollow cylindrical structure is wide and the lower end of the hollow cylindrical structure is narrow.
The pole holes comprise an anode pole hole and a cathode pole hole which are respectively positioned on two sides of the top cover plate.
The positive pole post hole and the negative pole post hole are identical in structure, and the hole is circular, elliptical or square.
The sealing ring is a hollow cylindrical structure and is positioned between the top cover plate and the lower injection molding piece.
The terminal post comprises a terminal post boss and a terminal post middle end face, and the terminal post boss is of a cylindrical structure with a groove in the middle.
The lower injection molding piece is divided into a positive lower injection molding piece and a negative lower injection molding piece which respectively correspond to the positive post hole and the negative post hole on the top cover plate.
The positive pole lower injection molding part and the negative pole lower injection molding part are similar in structure, and the side ends of the positive pole lower injection molding part and the negative pole lower injection molding part are provided with holes for the pole bosses to penetrate through and are flush with each other on the same horizontal plane.
The planar shapes of the pole, the sealing ring, the upper injection molding part and the pole hole are the same and are circular, elliptic or square.
The post boss penetrates through the lower injection molding part, the sealing ring and the top cover plate successively, the lower injection molding part is supported by the middle end face of the post, the portion, exposed out of the top cover plate, of the post boss is tightly combined with the upper injection molding part, and the upper injection molding part is embedded with the groove of the post boss to form a stable whole.
The beneficial effects of the utility model
(1) The square lithium battery top cover of the utility model has simple structure and adopts the traditional injection molding process; the top cover plate pole hole adopts a concave structure, so that the pole can achieve the effect of a sinking type when in injection molding, the height from the pole to the upper end surface of the top cover plate is greatly reduced, and the internal space of the battery is improved.
Drawings
Fig. 1 is an explosion diagram of the cathode pole of the top cover structure of the square lithium battery of the present invention.
Fig. 2 is the structure schematic diagram of the top cover structure of the square lithium battery of the utility model.
Fig. 3 is a sectional view of the top cover plate according to the present invention.
Fig. 4 is a longitudinal sectional view of the present invention shown in fig. 1.
Fig. 5 is a three-dimensional bottom view of the pole of the present invention.
Fig. 6 is a vertical sectional view of the upper injection-molded part of the present invention.
Description of reference numerals:
10 top cover plate, 11 positive pole column hole, 12 negative pole column hole, 13 pole column hole, 15 utmost point post subassembly, 20 negative pole column subassembly, 30 positive pole column subassembly, 31 utmost point post, 311 utmost point post boss, 312 utmost point post intermediate head face, 32 sealing washers, 33 go up the injection molding, 331 go up the injection molding outside, 332 go up the injection molding inner column ring, 40 anodal lower injection molding, 50 negative pole lower injection molding, 60 lower injection molding.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
A square lithium battery top cover structure comprises a top cover plate 10, a lower injection molding piece 60 and a pole assembly 15; recessed pole post holes 13 are formed in two sides of the top cover plate 10 in a penetrating mode, the pole post holes 13 comprise a positive pole post hole 11 and a negative pole post hole 12, pole post assemblies 15 are arranged on the pole post holes and are divided into a positive pole post assembly 20 and a negative pole post assembly 30, and the positive pole post assembly 20 and the negative pole post assembly 30 are identical in structure and are located on the same horizontal plane and are flush with each other; the pole assembly 15 comprises a pole 31, a sealing ring 32 and an upper injection molding part 33, the plane shapes of the pole 31, the sealing ring 32 and the upper injection molding part 33 are circular, elliptical or square, and the shapes of a positive pole hole 11 and a negative pole hole 12 arranged in the top cover plate 10 are the same as those of the pole boss 311 and the sealing ring 32.
The pole 31 is divided into a pole boss 311 and a pole middle end face 312, and the pole boss 311 is of a cylindrical structure with a groove in the middle; the upper injection molding part 33 is a hollow cylindrical structure with a raised inner cylindrical ring 332 inside and an outer part 331 of the upper injection molding part in a stepped narrowing mode, wherein the upper end of the hollow cylindrical structure is wide and the lower end of the hollow cylindrical structure is narrow, and the hollow cylindrical structure is injection molded by adopting a traditional injection molding process; the packing 32 is a hollow cylindrical structure, and is located between the top cover plate 10 and the lower molding member 60; the lower injection molding part 60 is divided into a positive lower injection molding part 40 and a negative lower injection molding part 50, the positive lower injection molding part 40 and the negative lower injection molding part 50 are similar in structure, and the side ends of the positive lower injection molding part 40 and the negative lower injection molding part 50 are provided with holes for the pole bosses 311 to penetrate through and are flush with each other on the same horizontal plane. The pole boss 311 is matched with the pole hole 13 through a shaft hole, the sealing ring 32 and the lower injection molding piece 60 are arranged between the middle end surface 312 of the pole and the end surface of the pole hole 13, the upper injection molding piece 33 is injected, and the upper injection molding piece 33 fixes the pole assembly 15 and the top cover plate 10.
Example 2
The embodiment is an installation operating principle of a square lithium battery top cover structure:
the utility model relates to a square lithium battery top cap structure, during the installation, at first fixed lamina tecti 10, utmost point post boss 311 adopts the axle sleeve mode cooperation with sealing washer 32, negative pole lower injection molding 50, passes negative pole lower injection molding 50 earlier, passes sealing washer 32 again, and runs through utmost point post hole 13 and compresses tightly on lamina tecti 10, utmost point post middle end face 312 holds the negative pole lower injection molding 50, injection molding 33 is gone up in the last injection molding, fixes utmost point post 31 and lamina tecti 10; the positive pole assembly 20 is assembled in the same manner as the negative pole assembly 30. Because the utmost point post hole 13 on the lamina tecti 10 is recessed formula structure, goes up injection molding 33 embedding recess internal fixation utmost point post 31 and lamina tecti 10, makes utmost point post 31 reach the effect of formula of sinking when moulding plastics, has reduced the distance of utmost point post 31 to lamina tecti 10 up end, has promoted the space utilization of battery module.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (10)
1. The square lithium battery top cover structure is characterized by comprising a top cover plate (10), a pole post assembly (15) and a lower injection molding piece (60), wherein penetrating pole post holes (13) are formed in two sides of the top cover plate (10), the pole post holes (13) are of a concave structure, and the pole post assembly (15) comprises a pole post (31), a sealing ring (32) and an upper injection molding piece (33); the pole (31) penetrates through the lower injection molding part (60), the sealing ring (32) and the pole hole (13) respectively, and the upper injection molding part (33) is embedded with the pole (31) penetrating through the top cover plate (10) and the concave pole hole (13) so that the whole top cover part is combined together.
2. A cap structure for a lithium square battery according to claim 1, wherein said upper injection-molded member (33) is a hollow cylindrical structure having an inner cylindrical ring (332) with a protrusion therein, and an outer portion (331) of the upper injection-molded member is tapered in a stepwise manner to have a wide upper end and a narrow lower end.
3. The top cover structure of the square lithium battery as claimed in claim 1, wherein the pole holes (13) comprise a positive pole hole (11) and a negative pole hole (12) respectively located at two sides of the top cover plate (10).
4. The square lithium battery top cover structure according to claim 3, wherein the positive pole column hole (11) and the negative pole column hole (12) have the same structure, and the hole shape is circular or oval or square.
5. A lithium prismatic battery top cover structure according to claim 1, wherein said gasket (32) is a hollow cylindrical structure between the top cover plate (10) and the lower molding member (60).
6. The square lithium battery top cover structure according to claim 1, wherein the pole (31) comprises a pole boss (311) and a pole middle end surface (312), and the pole boss is a cylindrical structure with a groove in the middle.
7. The top cover structure of the square lithium battery as claimed in claim 5, wherein the lower molding member (60) is divided into a lower anode molding member (40) and a lower cathode molding member (50) which correspond to the positive and negative post holes of the top cover plate (10), respectively.
8. The top cover structure of the square lithium battery as claimed in claim 7, wherein the side ends of the lower anode molding part (40) and the lower cathode molding part (50) are provided with a hole for the pole boss (311) to penetrate through, and are flush with each other on the same horizontal plane.
9. The top cover structure of the square lithium battery as claimed in claim 1, wherein the pole (31), the sealing ring (32), the upper injection molding member (33) and the pole hole (13) have the same plane shape and are circular, elliptical or square.
10. The square lithium battery top cover structure according to claim 6, wherein the pole boss (311) penetrates through the lower injection molding part (60), the sealing ring (32) and the top cover plate (10) in sequence, the middle end surface (312) of the pole supports the lower injection molding part (60), the part of the pole boss (311) exposed out of the top cover plate (10) is tightly combined with the upper injection molding part (33), and the grooves of the upper injection molding part (33) and the pole boss (311) are mutually embedded to form a stable whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920842551.0U CN209896112U (en) | 2019-06-05 | 2019-06-05 | Square lithium battery top cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920842551.0U CN209896112U (en) | 2019-06-05 | 2019-06-05 | Square lithium battery top cover structure |
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| Publication Number | Publication Date |
|---|---|
| CN209896112U true CN209896112U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920842551.0U Active CN209896112U (en) | 2019-06-05 | 2019-06-05 | Square lithium battery top cover structure |
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| CN (1) | CN209896112U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113270667A (en) * | 2020-11-11 | 2021-08-17 | 厦门海辰新能源科技有限公司 | Top cap subassembly and have its lithium cell |
-
2019
- 2019-06-05 CN CN201920842551.0U patent/CN209896112U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113270667A (en) * | 2020-11-11 | 2021-08-17 | 厦门海辰新能源科技有限公司 | Top cap subassembly and have its lithium cell |
| CN113270667B (en) * | 2020-11-11 | 2022-12-30 | 厦门海辰储能科技股份有限公司 | Top cap subassembly and have its lithium cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.2551, sunshine Avenue, high tech Development Zone, Xinyu City, Jiangxi Province 338000 Patentee after: Jiangxi Ganfeng lithium Technology Co.,Ltd. Address before: No.2551, sunshine Avenue, high tech Development Zone, Xinyu City, Jiangxi Province 338000 Patentee before: JIANGXI GANFENG BATTERY TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.2551, sunshine Avenue, high tech Development Zone, Xinyu City, Jiangxi Province 338000 Patentee after: Jiangxi Ganfeng lithium battery technology Co.,Ltd. Address before: No.2551, sunshine Avenue, high tech Development Zone, Xinyu City, Jiangxi Province 338000 Patentee before: Jiangxi Ganfeng lithium Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |