CN205452457U - Lithium ion battery group of thin wall plastics ultrasonic bonding encapsulation - Google Patents
Lithium ion battery group of thin wall plastics ultrasonic bonding encapsulation Download PDFInfo
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- CN205452457U CN205452457U CN201521118187.1U CN201521118187U CN205452457U CN 205452457 U CN205452457 U CN 205452457U CN 201521118187 U CN201521118187 U CN 201521118187U CN 205452457 U CN205452457 U CN 205452457U
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- lower casing
- ultrasonic bonding
- upper casing
- ion batteries
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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 lithium ion battery group of thin wall plastics ultrasonic bonding encapsulation, including hollow epitheca (1) and hollow inferior valve (4), epitheca (1) is located inferior valve (4) top, epitheca (1) and inferior valve (4) looks lock, a plurality of square battery cell (2) have been placed on inferior valve (4), square battery cell (2) are connected with one protection circuit board (3). The utility model discloses a lithium ion battery group of thin wall plastics ultrasonic bonding encapsulation, its compact structure conveniently carries out the encapsulation of thin wall plastics ultrasonic bonding to packaging effects is good, can avoid taking place weld bond skew butt fusion face, and the bad problem of part welding can form the scale of industry, is favorable to using widely, has great production practices meaning.
Description
Technical field
This utility model relates to cell art, particularly relates to the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation.
Background technology
Along with worldwide energy crisis and climate warming; traffic and transport field is in the urgent need to a kind of brand-new energy mode; and lithium ion battery is because of its environmental protection; the characteristics such as high-energy output cause the extensive concern of traffic and transport field; at present, in world wide, the lithium ion battery application start in this field is all studied by relevant industries widely.
Lithium-ions battery group is widely used to the portable power supplies applications such as mobile phone, notebook, navigator, along with increasing and lightness of end product function, lithium-ions battery group proposes volume is little, lightweight and the requirement of stand-by time length, and therefore the encapsulating structure of battery should be tried one's best miniaturization and lightness.
Wherein, plastic ultrasonic assemble welding technique, owing to it has, energy-conservation, low cost, efficiency are high, easily be automated the advantages such as production is widely used in the production of the plastic products such as electronic product, daily living article, auto parts and components, it progressively instead of solvent viscose glue, it is mechanically fixed and other technique for sticking, being the mounting technology of a kind of advanced person, this technology can be applicable on the encapsulating structure of compact lithium cell.
For plastic ultrasonic assemble welding technique, the design of plastic items solder side is the vital factor affecting ultrasonic bonding quality, affects the dimensional accuracy of weldment, the intensity of welding line joint and the concordance of batch welding production quality.The solder side design of plastic items includes the gap between part wall thickness, anti-flash boss, weld bond, soldering part, holds several aspect contents such as material design, Position Design.When product wall thickness is bigger, product is not susceptible to deformation, and has enough spatial design weld bonds and location structure, and ultrasonic bonding is easily achieved, and the intensity of welding is high, good stability of the dimension；And when product wall thickness is the least, and when product is relatively large, product is inherently susceptible to deformation, is susceptible to weld bond offset fusion face, part failure welding problem, it addition, during thin-walled parts ultrasonic bonding, be also easy to cause flash problem.
Therefore, at present in the urgent need to developing a kind of technology, its compact conformation, conveniently carry out thin-walled plastic ultrasonic bonding encapsulation, and packaging effect is good, it is possible to avoid weld bond offset fusion face, part failure welding problem.
Utility model content
In view of this; the purpose of this utility model is to provide the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation; its compact conformation; conveniently carry out thin-walled plastic ultrasonic bonding encapsulation, and packaging effect is good, it is possible to avoid weld bond offset fusion face; part failure welding problem; the scale of industry can be formed, be conducive to applying widely, be of great practical significance.
To this end, this utility model provides the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation, including upper casing and the lower casing of hollow of hollow, described upper casing is positioned at described lower casing top, and described upper casing and lower casing are interlocked；
It is placed with multiple square individual battery, described square individual battery and a protection circuit plate on described lower casing to be connected.
Wherein, the sidewall bottom clear width of described upper casing is distributed multiple lead and weld bond；
It is provided with solder side on the position that the top side wall of described lower casing is corresponding with weld bond in described upper casing；
The top side wall of described lower casing is provided with positioning boss on the position corresponding with lead in described upper casing.
Wherein, described weld bond be shaped as equilateral triangle or bottom angle is not more than the isosceles triangle of 60 °.
Wherein, described solder side has spark stricture of vagina.
Wherein, a circle anti-flash boss is set outside the surrounding top side wall of described lower casing.
The technical scheme provided from above this utility model; compared with prior art; the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation that this utility model provides, its compact conformation, conveniently carry out thin-walled plastic ultrasonic bonding encapsulation; and packaging effect is good; it can be avoided that there is weld bond offset fusion face, part failure welding problem, it is possible to form the scale of industry; be conducive to applying widely, be of great practical significance.
Accompanying drawing explanation
The perspective view of the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation that Fig. 1 provides for this utility model；
The upward view of upper casing in the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation that Fig. 2 provides for this utility model；
Fig. 3 is the enlarged diagram of I part described in Fig. 2；
The top view of lower casing in the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation that Fig. 4 provides for this utility model；
Fig. 5 is the enlarged diagram of II part described in Fig. 4；
When upper casing in the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation that Fig. 6 provides for this utility model is buckled in lower casing top, the enlarged diagram of location structure between upper casing and lower casing；
When upper casing in the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation that Fig. 7 provides for this utility model is buckled in lower casing top, the enlarged diagram of the welding position structure between upper casing and lower casing；
In figure, 1 is upper casing, and 2 is square cell, and 3 is protection circuit plate, and 4 is lower casing, and 5 is weld bond, and 6 is lead, and 7 is anti-flash boss, and 8 is solder side, and 9 is positioning boss.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that this utility model scheme, the utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Seeing Fig. 1 to Fig. 3, this utility model provides the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation, and including upper casing 1 and the lower casing 4 of hollow of hollow, described upper casing 1 is positioned at described lower casing 4 top, and described upper casing 1 and lower casing 4 are interlocked.
In this utility model, described lower casing 4 being placed with four square individual batteries 2, described square individual battery 2 is connected (being connected by soldering) with a protection circuit plate 3, and described protection circuit plate is installed on described lower casing 4.Implement, described protection circuit plate 3 has output golden finger, using the output interface as set of cells of the present invention.
In this utility model, implementing, described upper casing 1 and lower casing 4 are the housing using ABS plastic to be molded.
In this utility model, seeing Fig. 2, Fig. 3, the sidewall bottom clear width of described upper casing 1 is distributed multiple lead 6 and weld bond 5；
Implement, described weld bond 5 be preferably shaped to equilateral triangle or bottom angle is not more than the isosceles triangle of 60 °.
See Fig. 4 to Fig. 7, the position that the top side wall of described lower casing 4 is corresponding with weld bond 5 in described upper casing 1 is provided with solder side 8；
The top side wall of described lower casing 4 is provided with positioning boss 9 on the position corresponding with lead 6 in described upper casing 1；
Described solder side 8 and positioning boss 9 are positioned at the inside sidewalls of described lower casing 4；
In this utility model, a circle anti-flash boss 7 is set outside the surrounding top side wall of described lower casing 4, say, that described anti-flash boss 7 is distributed in the surrounding of the whole sidewall of lower casing 4.
In this utility model, implement, the solder side 8 of described lower casing 4 has spark stricture of vagina, by this spark stricture of vagina, the frictional force between bonding wire and face of weld can be increased, improve the intensity of welding.
In this utility model, there is between weld bond 5 and the anti-flash boss 7 of lower casing 4 of described upper casing 1 gap (such as 0.05mm) of predeterminable range, it is to avoid formed during welding and shear the bad order that welding causes sidewall to melt.
In this utility model, the groove having between anti-flash boss 7 and the positioning boss 9 of described lower casing 4, the corresponding setting of lead 6 of described groove and upper casing 1.When described upper casing 1 and lower casing 4 are interlocked, described groove and described lead 6 have certain gap between the two, thus the vibration friction for ultrasonic bonding provides the space moved.
In this utility model, the plurality of square cell 2, after spot welding is combined, can produce, as shell, the inner supporting structure that wave soldering connects, can play and avoid shell to be deformed inward, thus reach good welding effect.
Below in conjunction with specific embodiment, the technical solution of the utility model is described.
As a example by the built-in lithium ion battery of 8000mAh, the overall dimensions of square individual battery is: length 70mm, width 50mm, highly 25mm, and shell wall thickness thinnest part is 0.7mm, and sidewall thickness is 0.85mm.Upper casing 1 and lower casing 4 all use ABS material injection molding to form, and upper casing 1 is provided with weld bond 5, lead 6, lower casing 4 is provided with anti-flash boss 7, solder side 8 and positioning boss 9.
Weld bond 5 is the isosceles triangle that equilateral triangle or bottom angle are not more than 60 °, weld bond 5 is staggered in the top side wall of upper casing 1 with lead 6, after upper casing 1 and lower casing 4 fasten, lead 6 falls in the inside grooves of positioning boss 9 with anti-flash boss 7 composition, and leaves the gap not less than 0.05mm at width.The thickness of anti-flash boss 7 is 0.3mm, ensure welding after indeformable simultaneously should be the least, solder side 8 is designed to spark stricture of vagina, and the position of positioning boss 9 is corresponding with the position of lead 6.
Welding fabrication process for this Li-ion batteries piles, particularly as follows: after protection circuit plate 3 and square individual battery 2 are loaded lower casing 4 and connect, upper casing 1 and lower casing 4 are fastened, it is placed on inside special supersonic welding welding fixture, after upper soldering tip falls, the dither of soldering tip is sent to welding region by the sidewall of upper casing 1, weld bond 5 and solder side 8 melt rapidly, it is simultaneously directed to post 6 and plays positioning action with positioning boss 9, make weld bond 5 corresponding with solder side 8 and do not offset, plastics after fusing flow to both sides, effect due to anti-flash boss 7, plastics will be limited outwardly, realize the effect of anti-flash.Upper casing 1 and lower casing 4 are after plus certain pressure, and upper-lower casing is fused into one.
The results showed, Li-ion batteries piles is by using the ultrasonic welding structure of this thin-wall plastic shells, and after welding, the outward appearance of product is good, dimensionally stable, production yield rate are high.
It should be noted that, Li-ion batteries piles for a kind of thin-walled plastic ultrasonic bonding encapsulation that this utility model provides, the size of its shell and bonding wire can do corresponding adjustment according to actual needs, and the lithium-ions battery group that length dimension is less than 200mm, the width different size less than 100mm and compound mode is the most applicable.
From technical scheme above, the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation that this utility model provides, its compact conformation, having production efficiency high, packaging effect is good, and product size concordance is good, yield rate advantages of higher, it is adaptable to do not require the product of waterproof sealing after welding.
Therefore; in sum, compared with prior art, this utility model provides the Li-ion batteries piles of a kind of thin-walled plastic ultrasonic bonding encapsulation; its compact conformation; conveniently carry out thin-walled plastic ultrasonic bonding encapsulation, and packaging effect is good, it is possible to avoid weld bond offset fusion face; part failure welding problem; the scale of industry can be formed, be conducive to applying widely, be of great practical significance.
The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. the Li-ion batteries piles of a thin-walled plastic ultrasonic bonding encapsulation, it is characterized in that, upper casing (1) and the lower casing (4) of hollow including hollow, described upper casing (1) is positioned at described lower casing (4) top, described upper casing (1) and lower casing (4) and is interlocked；
Being placed with multiple square individual battery (2) on described lower casing (4), described square individual battery (2) is connected with a protection circuit plate (3).
2. Li-ion batteries piles as claimed in claim 1, it is characterised in that the sidewall bottom clear width of described upper casing (1) is distributed multiple lead (6) and weld bond (5)；
It is provided with solder side (8) on the position that the top side wall of described lower casing (4) is corresponding with weld bond (5) in described upper casing (1)；
The top side wall of described lower casing (4) is provided with positioning boss (9) on the position corresponding with lead (6) in described upper casing (1).
3. Li-ion batteries piles as claimed in claim 2, it is characterised in that described weld bond (5) be shaped as equilateral triangle or bottom angle is not more than the isosceles triangle of 60 °.
4. Li-ion batteries piles as claimed in claim 2, it is characterised in that described solder side has spark stricture of vagina on (8).
5. the Li-ion batteries piles as according to any one of Claims 1-4 a, it is characterised in that circle anti-flash boss (7) is set outside the surrounding top side wall of described lower casing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118187.1U CN205452457U (en) | 2015-12-28 | 2015-12-28 | Lithium ion battery group of thin wall plastics ultrasonic bonding encapsulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521118187.1U CN205452457U (en) | 2015-12-28 | 2015-12-28 | Lithium ion battery group of thin wall plastics ultrasonic bonding encapsulation |
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| CN205452457U true CN205452457U (en) | 2016-08-10 |
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| CN201521118187.1U Active CN205452457U (en) | 2015-12-28 | 2015-12-28 | Lithium ion battery group of thin wall plastics ultrasonic bonding encapsulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449267A (en) * | 2015-12-28 | 2016-03-30 | 天津力神特种电源科技股份公司 | Thin-wall plastic ultrasonic welded and encapsulated lithium-ion battery pack |
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2015
- 2015-12-28 CN CN201521118187.1U patent/CN205452457U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449267A (en) * | 2015-12-28 | 2016-03-30 | 天津力神特种电源科技股份公司 | Thin-wall plastic ultrasonic welded and encapsulated lithium-ion battery pack |
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| C14 | Grant of patent or utility model | ||
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Address after: No. 4-6, Lanyuan Road, Huayuan Industrial Zone, Binhai New Area, Tianjin 300384 Patentee after: Tianjin Lantian Special Power Technology Co.,Ltd. Address before: No. 6 Lanyuan Road, Huayuan Industrial Zone, Binhai New Area, Tianjin 300384 Patentee before: TIANJIN LISHEN SPECIAL POWER TECHNOLOGY CO.,LTD. |