CN209050263U - A kind of nut cap welding structure of cylindrical lithium battery - Google Patents
A kind of nut cap welding structure of cylindrical lithium battery Download PDFInfo
- Publication number
- CN209050263U CN209050263U CN201821765124.9U CN201821765124U CN209050263U CN 209050263 U CN209050263 U CN 209050263U CN 201821765124 U CN201821765124 U CN 201821765124U CN 209050263 U CN209050263 U CN 209050263U
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- China
- Prior art keywords
- nut cap
- caping
- isolation board
- lithium battery
- solder joint
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of nut cap welding structures of cylindrical lithium battery, including nut cap, explosion rupture disk and sealing ring, the nut cap includes caping and base ring, the caping passes through the interconnecting piece being obliquely installed with the base ring and connect, the top center position of the caping is equipped with blind hole, the side wall of the caping is equipped with extension edge, the base portion of the nut cap is equipped with isolation board, the lower surface of the isolation board is arranged in the explosion rupture disk, the base ring and isolation board are fastened between the stop collar and the plate body, the caping upper surface is welded with aluminium pole ears, the side that the blind hole is corresponded on the aluminium pole ears is equipped with laser solder joint, the laser solder joint horizontal arrangement, and the quantity of laser solder joint is six, the utility model structure is simple, it is practical and convenient, Laser Welding spot welding 6 points in a row, firm welding, without rosin joint, solder skip, Tiltedly, the advantages such as solder joint is few, sharpest edges reduce internal resistance for weldering.
Description
Technical field:
The utility model relates to technical field of lithium batteries, and in particular to a kind of nut cap welding structure of cylindrical lithium battery.
Background technique:
The appearance of battery is the life of our mankind, amusement and work provide important power supply guarantee.With society
The progress of development and human civilization, one-shot battery is due to the pollution to environment, capacity is low, using the time it is short the disadvantages of gradually will be by
The secondary cell for the advantages that superseded instead pollution-free, capacity is big, long service life, wherein cylinder type lithium battery is special
Some self structures and performance are widely applied to every field, as laptop, mobile power source, electric tool etc. are exactly
Representative therein.
Security combination nut cap is the most important safety guarantee component of lithium battery, itself structure and production technology directly or
Affect indirectly the performance of lithium battery and the manufacturing cost of battery producer.Pass through width 3- between nut cap and core anode
The aluminium pole ears of 4mm connect, and aluminium pole ears are welded in nut cap.However aluminium pole ears are welded using 4 rows in the prior art or 4 are just spot welded
The problems such as mode (as shown in Figure 5), this welding manner is easy to be partially welded, solder skip, rosin joint, not prison welding, it is good to reduce product
Rate, and existing capping structure is unfavorable for the welding of aluminium pole ears, reduces product yield, in this regard, the utility model is proposed one
The nut cap welding structure of kind cylindrical lithium battery.
Utility model content:
It is simple that the technical problem to be solved by the utility model is to provide structures, practical and convenient, one kind of firm welding
The nut cap welding structure of cylindrical lithium battery.
The following technical solution is employed for technical problem to be solved in the utility model to realize: a kind of cylindrical lithium battery
Nut cap welding structure, including nut cap, explosion rupture disk and sealing ring, the nut cap include caping and base ring, the caping with it is described
Base ring passes through the interconnecting piece connection being obliquely installed, and the top center position of the caping is equipped with blind hole, and the side wall of the caping is set
There is extension edge, the base portion of the nut cap is equipped with isolation board, and the lower surface of the isolation board is arranged in the explosion rupture disk, described anti-
Quick-fried includes plate body and the fixed plate that the plate body side wall is arranged in, and the top of the fixed plate is equipped with stop collar, the bottom
Ring and isolation board are fastened between the stop collar and the plate body, and the sealing ring is coated on the explosion rupture disk outer wall,
The caping upper surface is welded with aluminium pole ears, and the side that the blind hole is corresponded on the aluminium pole ears is equipped with laser solder joint, described to swash
Flush weld point horizontal arrangement, and the quantity of laser solder joint is six.
Further, the upper surface of the isolation board is equipped with one layer of reflectance coating, and is uniformly provided on isolation board through described
The through-hole of reflectance coating.
Further, the sealing ring and the contact site of the plate body lower surface are equipped with groove, filling in the groove
Glue.
Further, the middle part of the plate body is equipped with downward sunk structure.
Further, annular is equipped with gas vent on the interconnecting piece.
The utility model has the beneficial effects that the utility model structure is simple, and it is practical and convenient, Laser Welding spot welding 6 in a row
Point, firm welding, without rosin joint, solder skip, tiltedly, the advantages such as solder joint is few, sharpest edges reduce internal resistance, and internal resistance is than 4 points of normal welding for weldering
The purpose of 1-2M Ω less than normal, reaches and avoid being partially welded, rosin joint product yield and production efficiency are improved, it, can by the way that extension edge is arranged
The contact area for increasing caping and aluminium pole ears, keeps aluminium pole ears welding machine secured, and gas vent is arranged on interconnecting piece by setting, excludes
The problem of inner pressure of battery, ensures the safety of lithium battery by setting isolation board and explosion rupture disk.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model explosion rupture disk；
Fig. 3 is the structural schematic diagram of the utility model nut cap；
Fig. 4 is structural schematic diagram when the utility model aluminium pole ears weld；
Fig. 5 is welding structure in the prior art；
Wherein: 1- nut cap；11- caping；111- extension edge；12- interconnecting piece；121- gas vent；13- base ring；14- blind hole；
2- sealing ring；21- groove；3- explosion rupture disk；31- stop collar；32- fixed plate；33- plate body；331- sunk structure；4- reflectance coating；
5- isolation board；51- through-hole；6- aluminium pole ears；7- laser solder joint；
Specific embodiment:
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
It should be noted that when element is by referred to as " being fixed on " another element, it can be on another element or
Person is also possible to that there are elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertically ", " horizontal ", " left side "
" right side " and similar expression for illustrative purposes only, are not meant to be the only embodiment.
Embodiment 1
As shown in Figures 1 to 4, the utility model provides a kind of nut cap welding structure of cylindrical lithium battery, it is characterised in that:
Including nut cap 1, explosion rupture disk 3 and sealing ring 2, nut cap 1 includes caping 11 and base ring 13, and caping 11 is set with base ring 13 by inclination
The interconnecting piece 12 set connects, and the top center position of caping 11 is equipped with blind hole 14, and the side wall of caping 11 is equipped with extension edge 111, lid
The base portion of cap 1 is equipped with isolation board 5, and the lower surface of isolation board 5 is arranged in explosion rupture disk 3, and explosion rupture disk 3 includes plate body 33 and setting
It is equipped with stop collar 31 at the top of the fixed plate 32 of 33 side wall of plate body, fixed plate 32, base ring 13 and isolation board 5 are fastened on limit
Between position ring 31 and plate body 33, sealing ring 2 is coated on 3 outer wall of explosion rupture disk, and 11 upper surface of caping is welded with aluminium pole ears 6, aluminium pole ears 6
It is six that the side of upper corresponding blind hole 14, which is equipped with laser solder joint 7,7 horizontal arrangement of laser solder joint, and the quantity of laser solder joint 7,.
The upper surface of isolation board 5 is equipped with one layer of reflectance coating 4, and the through-hole through reflectance coating 4 is uniformly provided on isolation board 5
51。
Sealing ring 2 and the contact site of 33 lower surface of plate body are equipped with groove 21, fill glue in groove 21.
The middle part of plate body 33 is equipped with downward sunk structure 331.
Annular is equipped with gas vent 121 on interconnecting piece 12.
The utility model structure is simple, practical and convenient, Laser Welding spot welding 6 points in a row, firm welding, without rosin joint, leakage
Weldering, tiltedly, the advantages such as solder joint is few, sharpest edges reduce internal resistance, and internal resistance 1-2M Ω less than normal than 4 points of normal welding reaches and avoid welding for weldering
Partially, the purpose of rosin joint, product yield and production efficiency are improved, by the way that extension edge 111 is arranged, is capable of increasing caping 11 and aluminium pole ears
6 contact area keeps 6 welding machine of aluminium pole ears secured, and gas vent 121 is arranged by being arranged on interconnecting piece 12, excludes inner pressure of battery
The problem of, by setting isolation board 5 and explosion rupture disk 3, ensure the safety of lithium battery.
Embodiment 2
As shown in Figures 1 to 4, the utility model provides a kind of nut cap welding structure of cylindrical lithium battery, it is characterised in that:
Including nut cap 1, explosion rupture disk 3 and sealing ring 2, nut cap 1 includes caping 11 and base ring 13, and caping 11 is set with base ring 13 by inclination
The interconnecting piece 12 set connects, and the top center position of caping 11 is equipped with blind hole 14, and the side wall of caping 11 is equipped with extension edge 111, lid
The base portion of cap 1 is equipped with isolation board 5, and the lower surface of isolation board 5 is arranged in explosion rupture disk 3, and explosion rupture disk 3 includes plate body 33 and setting
It is equipped with stop collar 31 at the top of the fixed plate 32 of 33 side wall of plate body, fixed plate 32, base ring 13 and isolation board 5 are fastened on limit
Between position ring 31 and plate body 33, sealing ring 2 is coated on 3 outer wall of explosion rupture disk, and 11 upper surface of caping is welded with aluminium pole ears 6, aluminium pole ears 6
It is six that the side of upper corresponding blind hole 14, which is equipped with laser solder joint 7,7 horizontal arrangement of laser solder joint, and the quantity of laser solder joint 7,.
The upper surface of isolation board 5 is equipped with one layer of reflectance coating 4, and the through-hole through reflectance coating 4 is uniformly provided on isolation board 5
51。
Sealing ring 2 and the contact site of 33 lower surface of plate body are equipped with groove 21, fill glue in groove 21.
Annular is equipped with gas vent 121 on interconnecting piece 12.
The middle part of plate body 33 is equipped with downward sunk structure 331, by the way that sunk structure 331 is arranged, is capable of increasing anti-
The distance between quick-fried 3 and isolation board 5, and then cavity is formed, play the role of protection, buffering.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of nut cap welding structure of cylindrical lithium battery, it is characterised in that: including nut cap (1), explosion rupture disk (3) and sealing ring
(2), the nut cap (1) includes caping (11) and base ring (13), and the caping (11) is with the base ring (13) by being obliquely installed
Interconnecting piece (12) connection, the top center position of the caping (11) is equipped with blind hole (14), and the side wall of the caping (11) is set
Have extension edge (111), the base portion of the nut cap (1) is equipped with isolation board (5), and the explosion rupture disk (3) is arranged in the isolation board
(5) lower surface, the explosion rupture disk (3) include the fixed plate (32) of plate body (33) and setting in the plate body (33) side wall,
The top of the fixed plate (32) is equipped with stop collar (31), and the base ring (13) and isolation board (5) are fastened on the limit
Between ring (31) and the plate body (33), the sealing ring (2) is coated on the explosion rupture disk (3) outer wall, on the caping (11)
Surface is welded with aluminium pole ears (6), and the side that the blind hole (14) is corresponded on the aluminium pole ears (6) is equipped with laser solder joint (7), described
Laser solder joint (7) horizontal arrangement, and the quantity of laser solder joint (7) is six.
2. a kind of nut cap welding structure of cylindrical lithium battery according to claim 1, it is characterised in that: the isolation board
(5) upper surface is equipped with one layer of reflectance coating (4), and the through-hole through the reflectance coating (4) is uniformly provided on isolation board (5)
(51)。
3. a kind of nut cap welding structure of cylindrical lithium battery according to claim 1, it is characterised in that: the sealing ring
(2) groove (21) are equipped with the contact site of the plate body (33) lower surface, glue is filled in the groove (21).
4. a kind of nut cap welding structure of cylindrical lithium battery according to claim 1, it is characterised in that: the plate body (33)
Middle part be equipped be equipped with downward sunk structure (331).
5. a kind of nut cap welding structure of cylindrical lithium battery according to claim 1, it is characterised in that: the interconnecting piece
(12) annular is equipped with gas vent (121) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821765124.9U CN209050263U (en) | 2018-10-25 | 2018-10-25 | A kind of nut cap welding structure of cylindrical lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821765124.9U CN209050263U (en) | 2018-10-25 | 2018-10-25 | A kind of nut cap welding structure of cylindrical lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209050263U true CN209050263U (en) | 2019-07-02 |
Family
ID=67051841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821765124.9U Active CN209050263U (en) | 2018-10-25 | 2018-10-25 | A kind of nut cap welding structure of cylindrical lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209050263U (en) |
-
2018
- 2018-10-25 CN CN201821765124.9U patent/CN209050263U/en active Active
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