CN219513232U - Cylindrical battery - Google Patents
Cylindrical battery Download PDFInfo
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- CN219513232U CN219513232U CN202223370606.3U CN202223370606U CN219513232U CN 219513232 U CN219513232 U CN 219513232U CN 202223370606 U CN202223370606 U CN 202223370606U CN 219513232 U CN219513232 U CN 219513232U
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- hole
- positive electrode
- cap
- steel shell
- electrode cap
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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
Abstract
The utility model belongs to the technical field of batteries, and particularly relates to a cylindrical battery which comprises an anode cap, a steel shell and an insulating adhesive layer; the steel shell is provided with an opening at the upper part, and at least the upper half part of the steel shell is in a straight cylinder shape; the positive electrode cap seals the opening of the steel shell; the insulating adhesive layer is arranged between the anode cap and the steel shell to bond the anode cap and the steel shell. According to the cylindrical battery provided by the embodiment of the utility model, the upper part channeling process of the steel shell in the prior art is abandoned, so that the effective volume of the inner cavity of the steel shell is increased, and the height of the steel shell is higher than that in the prior art, thereby increasing the energy density of the battery.
Description
Technical Field
The utility model belongs to the technical field of batteries, and particularly relates to a cylindrical battery.
Background
The nickel-hydrogen secondary battery is generally a cylindrical battery, when the cylindrical battery is manufactured, the positive pole piece, the negative pole piece and the diaphragm are wound into a winding core by adopting a winding process and are placed in the steel shell, and then the side wall of the opening end of the steel shell is driven to roll inwards by a channeling machine, so that a concave circle of groove is formed on the side wall of the steel shell and used for supporting the sealing ring and the positive pole cap at the opening of the steel shell.
In the prior art, due to the groove formed at the opening end of the steel shell, the height of the steel shell after rolling the groove is lower than the height of the steel shell before rolling the groove of the battery, and the effective utilization of the inner space of the steel shell is affected.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: to among the prior art, the recess that the steel casing open end formed makes the height behind the steel casing channeling be less than the height before the channeling of battery, and then influences the problem of the effective utilization of inner space of steel casing, provides a cylinder battery.
In order to solve the technical problems, the embodiment of the utility model provides a cylindrical battery, which comprises an anode cap, a steel shell and an insulating adhesive layer;
the steel shell is of a barrel-shaped structure with an opening at the upper part, and the upper half part of the steel shell is in a straight barrel shape;
the positive electrode cap seals the upper opening of the steel shell;
the insulating adhesive layer is adhered between the anode cap and the steel shell so as to realize insulating sealing of the anode cap and the steel shell.
Optionally, the device further comprises a cover plate, the cover plate is fixed at the upper opening of the steel shell, the cover plate is provided with an inner hole, the positive electrode cap is arranged in the inner hole, the diameter of the inner hole is larger than the maximum diameter of the positive electrode cap, a first interval is arranged between the outer peripheral surface of the positive electrode cap and the inner hole wall of the cover plate, and the insulating adhesive layer is filled in the first interval.
Optionally, the steel shell comprises a cover plate, wherein the cover plate is fixed on an upper opening of the steel shell, a first hole and a second hole are sequentially formed in the cover plate from top to bottom, and the inner diameter of the first hole is larger than that of the second hole;
the lower end of the positive electrode cap comprises a first column and a second column which are arranged from bottom to top, the upper end face of the first column is connected with the lower end face of the second column, and the diameter of the first column is larger than that of the second column; the first column is inserted into the second hole, and the second column is inserted into the first hole; a second space is arranged between the outer peripheral surface of the first column and the inner wall of the second hole, and a third space is arranged between the outer peripheral surface of the second column and the inner wall of the first hole; a fourth space is arranged between the lower surface of the second column and the bottom wall of the first hole;
the second interval, the third interval and the fourth interval are communicated, and the insulating adhesive layer is filled in the second interval, the third interval and the fourth interval.
Optionally, the inner diameter of the first hole gradually decreases from top to bottom, so that the inner wall of the first hole gathers from top to bottom.
Optionally, the steel shell comprises a cover plate, wherein the cover plate is fixed at the upper opening of the steel shell and is provided with an inner hole;
the top end of the positive electrode cap penetrates through the inner hole, the bottom end of the positive electrode cap is arranged below the cover plate, and a fifth interval is formed between the upper surface of the bottom end of the positive electrode cap and the lower surface of the cover plate; a sixth interval is arranged between the outer peripheral surface of the top end of the positive electrode cap and the inner wall of the inner hole;
the insulating glue layer is arranged at the fifth interval.
Optionally, the inner peripheral surface of the insulating glue layer is flush with the inner peripheral surface of the cover plate, the outer diameter of the insulating glue layer is larger than the outer diameter of the anode cap, and the outer diameter of the insulating glue layer is smaller than the outer diameter of the cover plate.
Optionally, the outer side of the positive electrode cap is bent upwards to form an adhesive part, a seventh interval is arranged between the adhesive part and the inner wall of the steel shell, and the insulating adhesive layer is arranged at the seventh interval.
Optionally, the upper surface of the positive electrode cap is recessed downward to form a groove, the groove is located at the outer side of the positive electrode cap, and the inner wall of the outer side of the groove coincides with the inner side wall of the bonding part.
Optionally, the positive electrode cap is an SPCC nickel-plated cold-rolled steel plate.
Optionally, the insulating glue layer is insulating resin glue or hot melt glue.
According to the cylindrical battery provided by the embodiment of the utility model, the rolling groove process is removed from the steel shell, the steel shell and the positive electrode cap are bonded by adopting the insulating adhesive layer, and the height of the steel shell at the moment is the actual height.
Drawings
Fig. 1 is a schematic view showing the upper structure of a steel case of a cylindrical battery according to a second embodiment of the present utility model;
fig. 2 is an overall schematic view of a cylindrical battery provided in a third embodiment of the present utility model;
fig. 3 is a partial schematic view of a cylindrical battery provided in a third embodiment of the present utility model;
fig. 4 is a schematic view of a partial explosion of a cylindrical battery according to a third embodiment of the present utility model;
fig. 5 is a schematic view of a partial structure of a cylindrical battery according to a third embodiment of the present utility model after removing an insulating adhesive layer;
fig. 6 is a partial schematic view of a cylindrical battery provided in a fourth embodiment of the present utility model;
fig. 7 is a partial schematic view of a cylindrical battery provided in a fifth embodiment of the present utility model.
Reference numerals in the specification are as follows:
1. a steel shell; 2. a cover plate; 21. a first hole; 22. a second hole; 3. an anode cap; 31. a first column; 32. a second column; 33. a groove; 4. an insulating adhesive layer; 51. a first interval; 52. a second interval; 53. a third interval; 54. a fourth interval; 55. a fifth interval; 56. a sixth interval; 57. and a seventh interval.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
First embodiment
The cylindrical battery provided by the first embodiment of the utility model comprises an anode cap 3, a steel shell 1 and an insulating adhesive layer 4; the steel shell 1 is of a barrel structure with an opening at the upper part, and the upper half part of the steel shell 1 is in a straight barrel shape. The positive electrode cap 3 closes the upper opening of the steel can 1. An insulating adhesive layer 4 is provided between the positive electrode cap 3 and the steel can 1 to bond the positive electrode cap 3 and the steel can 1. The steel shell 1 in the embodiment is the negative electrode of the battery, the positive electrode cap 3 is the positive electrode of the battery, and the positive electrode cap 3 and the steel shell 1 are adhered while insulation of the positive electrode and the negative electrode is realized by using the insulating adhesive layer 4.
In this embodiment, the positive electrode cap 3 includes a top end and a bottom end, the bottom end is flat, the top end is a cylindrical protrusion fixed on the upper surface of the bottom end, the positive electrode cap 3 is an SPCC nickel-plated cold-rolled steel plate, and the insulating adhesive layer 4 is insulating resin glue or hot melt adhesive.
The steel shell 1 in this embodiment eliminates the channeling process in the manufacturing process, so that the height of the steel shell 1 is the actual height thereof, and thus the inner cavity of the steel shell 1 is larger than the steel shell 1 after channeling in the prior art, and compared with the channeling process in the prior art, the upper open end of the steel shell 1 is recessed inwards to form a channeling, the smallest diameter of the steel shell 1 is the diameter formed by the bottom wall of the channeling, the smallest diameter of the steel shell 1 is smaller than the diameters of other parts of the steel shell 1, so that the size of the winding core in the steel shell 1 is limited, and the upper open end of the steel shell 1 in this embodiment is in a straight cylinder structure, and the smallest diameter of the steel shell 1 after channeling process is larger than the smallest diameter of the steel shell 1 in the prior art, thereby directly improving the energy density of the battery.
Second embodiment
Referring to fig. 1, a cylindrical battery according to a second embodiment of the present utility model is different from the first embodiment in that the cylindrical battery further includes a cover plate 2, the cover plate 2 is fixed at an upper opening of a steel can 1, and the cover plate 2 and the steel can 1 are connected by welding, and at this time, the cover plate 2 and the steel can 1 belong to a negative electrode. The cover plate 2 has an inner hole, and the diameter of the cover plate 2 is larger than the maximum diameter of the positive electrode cap 3, so that the outer circumferential surface of the positive electrode cap 3 and the inner hole wall of the cover plate 2 have a first interval 51, while the bottom end of the positive electrode cap 3 is arranged in the inner hole, and the insulating adhesive layer 4 is filled in the first interval 51.
Of course, the thickness of the positive electrode cap 3 in the up-down direction is equal to the thickness of the cover plate 2 in the up-down direction, and smooth connection of the positive electrode cap 3 and the cover plate 2 is achieved.
Third embodiment
Referring to fig. 2 to 5, a cylindrical battery according to a third embodiment of the present utility model is different from the first embodiment in that the cylindrical battery further includes a cap plate 2, the cap plate 2 is fixed to an upper opening of the steel can 1, the cap plate 2 is sequentially provided with a first hole 21 and a second hole 22 concentric from top to bottom, and an inner diameter of the first hole 21 is larger than an inner diameter of the second hole 22. Correspondingly, the lower end of the positive electrode cap 3 comprises a first column 31 and a second column 32 which are arranged from bottom to top, the upper end surface of the first column 31 is connected with the lower end surface of the second column 32, and the diameter of the first column 31 is larger than that of the second column 32; the first post 31 is inserted into the second hole 22, and the second post 32 is inserted into the first hole 21. At this time, the outer peripheral surface of the first column 31 and the inner wall of the second hole 22 are provided with the second space 52, and the outer peripheral surface of the second column 32 and the inner wall of the first hole 21 are provided with the third space 53; the lower surface of the second post 32 and the bottom wall of the first hole 21 have a fourth space 54. The second, third and fourth spaces 52, 53 and 54 communicate.
The second, third and fourth spaces 52, 53 and 54 are surfaces of the cap plate 2 and the positive electrode cap 3 that are close to each other. The insulating glue layer 4 is filled in the second interval 52, the third interval 53 and the fourth interval 54, the insulating glue layer 4 is filled in the second interval 52 and can protrude downwards from the insulating glue layer 4 to better insulate the anode cap 3 and the cover plate 2, and the insulating glue layer 4 can be flush with the upper opening of the third interval 53 upwards.
In the present embodiment, the inner diameter of the first hole 21 decreases from top to bottom so that the inner walls of the first hole 21 converge from top to bottom.
Fourth embodiment
Referring to fig. 6, a cylindrical battery according to a fourth embodiment of the present utility model is different from the first embodiment in that the cylindrical battery further includes a cap plate 2, the cap plate 2 is fixed to an upper opening of the steel can 1, and the cap plate 2 has an inner hole. The top of positive pole cap 3 wears to locate the hole, and the bottom of positive pole cap 3 sets up in the below of apron 2, and the upper surface of the bottom of positive pole cap 3 and the lower surface of apron 2 have fifth interval 55. And the outer peripheral surface of the tip end of the positive electrode cap 3 and the inner wall of the inner hole have sixth spaces 56. The insulating adhesive layer 4 is disposed at the fifth space 55.
The inner peripheral surface of the insulating adhesive layer 4 is flush with the inner peripheral surface of the cover plate 2, the outer diameter of the insulating adhesive layer 4 is larger than the outer diameter of the positive electrode cap 3, and the outer diameter of the insulating adhesive layer 4 is smaller than the outer diameter of the cover plate 2.
Fifth embodiment
Referring to fig. 7, a cylindrical battery according to a fourth embodiment of the present utility model is different from the first embodiment in that the outer side of the positive electrode cap 3 is bent upward to form an adhesive part, the adhesive part and the inner wall of the steel can 1 have seventh spaces 57, and the insulating adhesive layer 4 is disposed at the seventh spaces 57. Unlike the first embodiment, the contact surface between the positive electrode cap 3 and the steel can 1 is increased by using the adhesive portion in the present embodiment to enhance the connection strength between the positive electrode cap 3 and the steel can 1.
The upper surface of the positive electrode cap 3 is concave downward to form a groove 33, the groove 33 is positioned at the outer side of the positive electrode cap 3, and the inner wall of the outer side of the groove 33 is overlapped with the inner side wall of the bonding part.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The cylindrical battery is characterized by comprising an anode cap, a steel shell and an insulating adhesive layer;
the steel shell is of a barrel-shaped structure with an opening at the upper part, and the upper half part of the steel shell is in a straight barrel shape;
the positive electrode cap seals the upper opening of the steel shell;
the insulating adhesive layer is adhered between the anode cap and the steel shell so as to realize insulating sealing of the anode cap and the steel shell.
2. The cylindrical battery according to claim 1, further comprising a cap plate fixed to an upper opening of the steel can, the cap plate having an inner hole, the positive electrode cap being disposed in the inner hole, a diameter of the inner hole being larger than a maximum diameter of the positive electrode cap such that a first space is provided between an outer circumferential surface of the positive electrode cap and an inner hole wall of the cap plate, the insulating adhesive layer being filled in the first space.
3. The cylindrical battery according to claim 1, further comprising a cover plate fixed to the upper opening of the steel case, the cover plate being provided with a first hole and a second hole in this order from top to bottom, an inner diameter of the first hole being larger than an inner diameter of the second hole;
the lower end of the positive electrode cap comprises a first column and a second column which are arranged from bottom to top, the upper end face of the first column is connected with the lower end face of the second column, and the diameter of the first column is larger than that of the second column; the first column is inserted into the second hole, and the second column is inserted into the first hole; a second space is arranged between the outer peripheral surface of the first column and the inner wall of the second hole, and a third space is arranged between the outer peripheral surface of the second column and the inner wall of the first hole; a fourth space is arranged between the lower surface of the second column and the bottom wall of the first hole;
the second interval, the third interval and the fourth interval are communicated, and the insulating adhesive layer is filled in the second interval, the third interval and the fourth interval.
4. The cylindrical battery according to claim 3, wherein the inner diameter of the first hole gradually decreases from top to bottom such that the inner walls of the first hole converge from top to bottom.
5. The cylindrical battery of claim 1, further comprising a cover plate secured to the upper opening of the steel can, the cover plate having an inner bore;
the top end of the positive electrode cap penetrates through the inner hole, the bottom end of the positive electrode cap is arranged below the cover plate, and a fifth interval is formed between the upper surface of the bottom end of the positive electrode cap and the lower surface of the cover plate; a sixth interval is arranged between the outer peripheral surface of the top end of the positive electrode cap and the inner wall of the inner hole;
the insulating glue layer is arranged at the fifth interval.
6. The cylindrical battery according to claim 5, wherein an inner peripheral surface of the insulating adhesive layer is flush with an inner peripheral surface of the cap plate, an outer diameter of the insulating adhesive layer is larger than an outer diameter of the positive electrode cap, and an outer diameter of the insulating adhesive layer is smaller than an outer diameter of the cap plate.
7. The cylindrical battery according to claim 1, wherein the outer side of the positive electrode cap is bent upward to form a bonding portion, a seventh space is provided between the bonding portion and the inner wall of the steel can, and the insulating adhesive layer is provided at the seventh space.
8. The cylindrical battery according to claim 7, wherein an upper surface of the positive electrode cap is recessed downward to form a groove, the groove being located outside the positive electrode cap, an inner wall of the outside of the groove being coincident with an inner side wall of the bonding portion.
9. The cylindrical battery according to any one of claims 1 to 8, wherein the positive electrode cap is an SPCC nickel plated cold rolled steel sheet.
10. The cylindrical battery according to any one of claims 1 to 8, wherein the insulating adhesive layer is an insulating resin glue or a hot melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223370606.3U CN219513232U (en) | 2022-12-13 | 2022-12-13 | Cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223370606.3U CN219513232U (en) | 2022-12-13 | 2022-12-13 | Cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219513232U true CN219513232U (en) | 2023-08-11 |
Family
ID=87530331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223370606.3U Active CN219513232U (en) | 2022-12-13 | 2022-12-13 | Cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219513232U (en) |
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2022
- 2022-12-13 CN CN202223370606.3U patent/CN219513232U/en active Active
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