CN217903390U - Positive terminal of cylindrical battery and cylindrical battery - Google Patents
Positive terminal of cylindrical battery and cylindrical battery Download PDFInfo
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- CN217903390U CN217903390U CN202221796751.5U CN202221796751U CN217903390U CN 217903390 U CN217903390 U CN 217903390U CN 202221796751 U CN202221796751 U CN 202221796751U CN 217903390 U CN217903390 U CN 217903390U
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- cylindrical battery
- insulating pad
- current collecting
- positive terminal
- collecting disc
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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 relates to the technical field of new energy batteries, in particular to a cylindrical battery anode terminal and a cylindrical battery, wherein the cylindrical battery anode terminal comprises a current collecting disc, a pole column, an insulating pad, a sealing ring and a fixing ring; the first end of the pole is connected with the first surface of the current collecting disc and is of an integrated structure; the sealing ring and the insulating pad are sleeved on the outer wall of the insulating pad, and the insulating pad is attached to the first surface of the current collecting disc; the outer wall of the sealing ring is sleeved with the fixing ring, and the first end of the fixing ring is attached to the insulating pad. The utility model discloses among the technical scheme, before the shell was gone into to coiling electric core, with the utmost point ear and the current collection dish welding of electric core, accomplish electric core and the holistic connection of positive terminal promptly, when the shell operation was gone into to electric core, in the electric core disect insertion casing after with the welding, the tip of utmost point post penetrated in the through-hole of positive end plate. Carry out the integral type design with current collecting disc, utmost point post, insulating pad, sealing washer and solid fixed ring, constitute the anodal terminal structure of integral type, in the manufacturing process, can show promotion production efficiency.
Description
Technical Field
The utility model relates to a new energy battery technical field especially relates to a cylinder battery positive terminal and cylinder battery.
Background
The positive terminal is composed of a current collecting disc, an insulating sheet, a fixing ring, a sealing ring and a pole column, in the actual assembly process, the current collecting disc is welded with a pole ear of an electric core, then the insulating sheet, the fixing ring, the sealing ring and the pole column are placed in a battery shell respectively, and then the current collecting disc and the bottom end of the pole column are welded together by laser welding.
However, after the diameter of the battery is increased, the battery core adopts a full-tab design, the multiplying power performance of the battery is obviously improved, the negative electrode is conducted with the shell, and the welding and packaging process of the positive electrode becomes more complex. Traditional split type positive terminal design adopts the rivet to upset the mode of sealing and is connected with the casing, will can't satisfy leakproofness and resistance to pressure under the high magnification charge-discharge condition on jumbo size cylinder battery, consequently, need consider to use laser welding, and the increase of apron area leads to laser welding length to increase, and production efficiency descends.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem more than at least that exists among the prior art, the embodiment of the utility model provides a cylinder battery positive terminal and cylinder battery.
The embodiment of the utility model provides a cylinder battery positive terminal on the one hand, including current collecting disc, utmost point post, insulating pad, sealing washer and solid fixed ring; the first end of the pole is connected with the first surface of the current collecting disc and is of an integrated structure; the sealing ring and the insulating pad are sleeved on the outer wall of the pole, and the insulating pad is attached to the first surface of the current collecting disc; the outer wall of the sealing ring is sleeved with the fixing ring, and the first end of the fixing ring is attached to the insulating pad.
In some embodiments, the insulating pad and the sealing ring are an injection molded unitary structure.
In some embodiments, the outer wall of the pole and the first surface of the current collecting disc are respectively provided with a microporous structure for improving the connection strength.
In some embodiments, the retaining ring comprises a first retaining portion and a second retaining portion; the first fixed part with the sealing washer laminating, the second fixed part with the insulating pad laminating, the second fixed part is kept away from one side of insulating pad forms the joint platform that is used for the anodal end plate of joint.
In some embodiments, the abutting surfaces of the first fixing portion and the sealing ring and the abutting surfaces of the second fixing portion and the insulating pad are respectively provided with a microporous structure for improving connection strength.
In some embodiments, the insulating pad has a diameter that is the same as the diameter of the current collecting disc, and the second end of the post is flush with the port of the sealing ring.
In some embodiments, the insulating mat comprises a hollowed-out hole.
An aspect of the embodiment of the present invention provides a cylindrical battery, including shell, electric core and the positive terminal of the above-mentioned cylindrical battery.
In some embodiments, the housing comprises a housing body and a positive end plate; the positive end plate and the shell body are of an integral structure, and a through hole is formed in the circle center of the positive end plate.
In some embodiments, the cell tab and the current collecting plate, and the fixing ring and the positive end plate are respectively welded by laser welding.
The embodiment of the utility model provides a pair of cylinder battery positive terminal and cylinder battery, before the shell was gone into to coiling electric core, with the utmost point ear and the current collecting plate welding of electric core, at this moment, accomplish electric core and the holistic connection of positive terminal promptly, then when the shell operation was gone into to electric core, in the electric core disect insertion casing after with the welding, the tip of utmost point post penetrated in the through-hole of positive end plate. The utility model discloses among the technical scheme, carry out the integral type design with current collecting disc, utmost point post, insulating pad, sealing washer and solid fixed ring, constitute the anodal terminal structure of integral type, in the production manufacturing process, can show promotion production efficiency.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
Fig. 1 is a cross-sectional view of a positive terminal of a cylindrical battery according to an embodiment of the present invention;
fig. 2 is a top view of the positive terminal of the cylindrical battery according to the embodiment of the present invention.
In the figure:
1: a current collecting plate; 2: a pole column; 3: an insulating pad; 31: hollowing out holes; 4: a seal ring; 5: a fixing ring; 51: a first fixed part; 52: a second fixed part.
Detailed Description
To make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and obviously, 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 the skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a cylindrical battery positive terminal, which includes a current collecting plate 1, a pole 2, an insulating pad 3, a sealing ring 4, and a fixing ring 5; the first end of the pole 2 is connected with the first surface of the current collecting disc 1 and is of an integrated structure; the sealing ring 4 and the insulating pad 3 are sleeved on the outer wall of the pole 2, and the insulating pad 3 is attached to the first surface of the current collecting disc 1; the fixing ring 5 is sleeved on the outer wall of the sealing ring 4, and the first end of the fixing ring 5 is attached to the insulating pad 3.
The embodiment of the utility model provides an in, utmost point post 2 and current collection dish 1 structure as an organic whole, for example, utmost point post 2 and the integrative stamping forming of current collection dish 1. The upper part of the collecting tray is used as the pole 2, the lower part of the collecting tray is used as the collecting tray 1, the collecting tray and the pole 2 are of an integrated structure, the welding procedure of the collecting tray 1 and the pole 2 in the traditional process is omitted, the integration is high, compared with welding, the connecting strength is higher, and the stability of the communication between the pole 2 and the collecting tray 1 is ensured.
The embodiment of the utility model provides an in, insulating 3 and the sealing washer 4 of filling up are injection moulding's a body structure. For example, the insulating gasket 3 and the seal ring 4 are integrally injection molded. The insulating pad 3 and the sealing ring 4 are used for ensuring the sealing and insulating effects between the pole 2 and the fixing ring 5, the insulating pad and the sealing ring are of an integrated structure, the installation process steps can be saved, the working efficiency is improved, no gap exists between the integrated structure, and the insulating sealing effect can be improved.
For example, the outer wall of the pole 2 and the first surface of the current collecting plate 1 are respectively provided with a microporous structure for improving the connection strength. That is the outer wall of utmost point post 2, the first face of current collection dish 1 carries out surface treatment respectively to form the nanopore, this micro-nano pore structure can increase the joint strength between utmost point post 2 and current collection dish 1 and insulating pad 3, sealing washer 4, the wholeness of a plurality of spare parts of positive terminal structure.
With continued reference to fig. 1, for example, the fixing ring 5 includes a first fixing portion 51 and a second fixing portion 52; first fixed part 51 and the laminating of sealing washer 4, second fixed part 52 and the laminating of insulating pad 3, one side that insulating pad 3 was kept away from to second fixed part 52 forms the joint platform that is used for the anodal end plate of joint. The first fixing portion 51 and the second fixing portion 52 form a right-angle structure, and the first fixing portion 51 and the second fixing portion 52 respectively have a certain contact area with the sealing ring 4 and the insulating pad 3, so that the fixing effect of the fixing ring 5 on the insulating pad 3 and the sealing ring 4 can be ensured.
For example, the contact surfaces of the first fixing portion 51 and the seal ring 4 and the contact surfaces of the second fixing portion 52 and the insulating gasket 3 are provided with a micro-porous structure for improving the connection strength. That is, the corresponding binding surfaces of the first fixing portion 51 and the second fixing portion 52 are subjected to surface treatment to form a nano-pore, so that the connection strength is increased, and the integrated effect of connecting multiple parts of the positive terminal structure is ensured.
In some embodiments, the insulating pad 3 has the same diameter as the current collecting disc 1, and the second end of the pole 2 is flush with the port of the sealing ring 4. The insulating pad 3 covers the current collecting disc 1, and when the current collecting disc 1 is in a shell operation, the current collecting disc 1 is not connected with the anode end plate, and the pole 2 is flush with the port of the sealing ring 4, so that the outer wall of the pole 2 can be completely wrapped by sealing materials. The above structure can ensure the insulation sealing effect of the insulation pad 3 and the seal ring 4.
For example, the insulating pad 3 includes a hollowed hole 31. The insulating pad 3 is used for isolating the positive end cover and the current collecting disc 1, and a certain number of hollow holes 31 can be formed in the insulating part under the condition that the insulating part has a certain height, so that the insulating part cannot be conducted with the current collecting disc 1 through the hollow holes 31. Through set up many fretwork holes 31 on insulating part, can practice thrift the required material of insulating part, also make things convenient for to carry out contactless welding operation to current collecting plate 1.
The embodiment of the utility model provides a cylindrical battery, including shell, electric core and above-mentioned cylindrical battery positive terminal. The shell comprises a shell body and a positive end plate; the positive end plate and the shell body are of an integral structure, and a through hole is formed in the circle center of the positive end plate.
When the cylindrical battery is manufactured, welding a lug of a winding battery core with the current collecting disc 1 to form a battery core with a positive terminal; then, the whole cell is put into the battery case, and the fixing ring 5 is welded to the case by laser welding. Because the circumference of the fixing ring 5 is far smaller than the diameter of the shell, the path distance of laser welding is shorter, and the process beat and the quality can be better ensured.
The embodiment of the utility model provides a pair of cylinder battery positive terminal and cylinder battery has following advantage:
1. the welding process flow of the positive terminal is simplified, the welding process of the current collecting disc 1 and the pole 2 is omitted, the cost can be reduced, and the efficiency is improved;
2. the integrated positive terminal has better strength and stability in structure, and can effectively improve the consistency of the battery;
3. the integrated positive terminal can be completed by using an integrated injection molding process, hot melting or pressure riveting, the process is mature, the production efficiency is high, and the cost is low;
4. the integrated positive terminal has stronger expansibility in the preparation process, can be adjusted according to different process requirements, and is particularly suitable for producing and manufacturing large cylindrical batteries.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The positive terminal of the cylindrical battery is characterized by comprising a current collecting disc (1), a pole (2), an insulating pad (3), a sealing ring (4) and a fixing ring (5);
the first end of the pole (2) is connected with the first surface of the current collecting disc (1) and is of an integrated structure;
the sealing ring (4) and the insulating pad (3) are sleeved on the outer wall of the pole (2), and the insulating pad (3) is attached to the first surface of the current collecting disc (1);
the fixing ring (5) is sleeved on the outer wall of the sealing ring (4), and the first end of the fixing ring (5) is attached to the insulating pad (3).
2. The cylindrical battery positive terminal as claimed in claim 1, wherein the insulating gasket (3) and the sealing ring (4) are an injection-molded integral structure.
3. The cylindrical battery positive terminal according to claim 2, wherein the outer wall of the pole (2) and the first surface of the current collecting disc (1) are respectively provided with a microporous structure for improving the connection strength.
4. The cylindrical battery positive terminal according to claim 2, wherein the fixing ring (5) comprises a first fixing portion (51) and a second fixing portion (52);
first fixed part (51) with sealing washer (4) laminating, second fixed part (52) with insulating pad (3) laminating, keep away from second fixed part (52) one side of insulating pad (3) forms the joint platform that is used for the anodal end plate of joint.
5. The positive terminal for cylindrical batteries according to claim 4, wherein the contact surfaces of the first fixing portion (51) and the sealing ring (4) and the second fixing portion (52) and the insulating pad (3) are respectively provided with a micro-porous structure for improving the connection strength.
6. The cylindrical battery positive terminal according to claim 2, characterized in that the insulating mat (3) has the same diameter as the current collecting disc (1), and the second end of the pole (2) is flush with the port of the sealing ring (4).
7. The cylindrical battery positive terminal according to claim 2, characterized in that the insulating mat (3) comprises hollowed-out holes (31).
8. A cylindrical battery comprising a case, a cell, and the positive terminal of the cylindrical battery according to any one of claims 1 to 7.
9. The cylindrical battery of claim 8, wherein the housing comprises a case body and a positive end plate;
the positive end plate and the shell body are of an integral structure, and a through hole is formed in the circle center of the positive end plate.
10. The cylindrical battery according to claim 9, wherein the cell tabs and the current collecting plate (1), and the fixing ring (5) and the positive end plate are respectively laser welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221796751.5U CN217903390U (en) | 2022-07-11 | 2022-07-11 | Positive terminal of cylindrical battery and cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221796751.5U CN217903390U (en) | 2022-07-11 | 2022-07-11 | Positive terminal of cylindrical battery and cylindrical battery |
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| Publication Number | Publication Date |
|---|---|
| CN217903390U true CN217903390U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221796751.5U Active CN217903390U (en) | 2022-07-11 | 2022-07-11 | Positive terminal of cylindrical battery and cylindrical battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116344834A (en) * | 2023-05-30 | 2023-06-27 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric equipment |
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2022
- 2022-07-11 CN CN202221796751.5U patent/CN217903390U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116344834A (en) * | 2023-05-30 | 2023-06-27 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric equipment |
| CN116344834B (en) * | 2023-05-30 | 2023-08-15 | 厦门海辰储能科技股份有限公司 | Energy storage device and electric equipment |
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