CN203659981U - Filling port sealing structure with inward-concave plug body - Google Patents
Filling port sealing structure with inward-concave plug body Download PDFInfo
- Publication number
- CN203659981U CN203659981U CN201420036976.XU CN201420036976U CN203659981U CN 203659981 U CN203659981 U CN 203659981U CN 201420036976 U CN201420036976 U CN 201420036976U CN 203659981 U CN203659981 U CN 203659981U
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- China
- Prior art keywords
- injection hole
- liquid injection
- cock body
- plug body
- concave
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 title abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 85
- 238000003466 welding Methods 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims description 65
- 239000007924 injection Substances 0.000 claims description 65
- 210000002421 cell wall Anatomy 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 abstract description 38
- 238000004146 energy storage Methods 0.000 abstract description 10
- 239000004411 aluminium Substances 0.000 description 35
- 239000003792 electrolyte Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Classifications
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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 relates to a filling port sealing structure with an inward-concave plug body. The existing filling port sealing structure of an energy storage device is poor in welding strength and sealing performance. The filling port sealing structure comprises a shell, a filling port and a plug body, wherein the plug body is inserted into the filling port, the upper surface of the plug body is provided with an inward groove, the contour of the side wall of the inward groove is matched with that of the outer side wall of the plug body, a groove wall with the thickness of 0.2mm to 1mm is formed, the top surface of the groove wall is leveled to the plane of the outer end port of the filling port, and the plug body is fixed in a laser welding manner. The thickness of the groove wall is controlled within the range of 0.2mm to 1mm, so that the width of the plane of one side, adjacent to the plug body, of a joint seam is reduced; when in welding, aluminum liquid is limited above the joint seam and solidified into a welding spot, the welding spots of two adjacent welding points are sequentially overlapped, a sealing layer is formed above the joint seam, so that not only can the connection strength between the plug body and the shell be guaranteed, but also the sealing performance between the plug body and the shell can be guaranteed, and the service life of the product can be guaranteed.
Description
Technical field
The utility model relates to a kind of energy storage device, is specifically related to a kind of electrolyte filling hole structure of energy storage device.
Background technology
In known technology, energy storage device, for store electrical energy, is a kind of sheath realization storage electrostatic energy that forms one deck charge balance by the surface at electrode and electrolyte.Energy storage device comprises housing, is loaded on the core body in housing and is positioned at the polar cap at housing two ends, and described energy storage device is realized electrolyte and injected by being located at the liquid injection hole of its outer surface, then realizes liquid injection hole sealing by hermetically-sealed construction.Existing hermetically-sealed construction comprises the aluminium plug of being located at the liquid injection hole of energy storage device surface of shell and being sealed and matched with described liquid injection hole, aluminium plug inserts after liquid injection hole, the upper surface of aluminium plug flushes with described housing outer surface, recycling laser welding realize aluminium plug and housing affixed, the sealing property of this welding manner is not good.In order to improve sealing property, liquid injection hole is set to step-likely conventionally, and sets up plug below aluminium plug, and the contact area increasing successively between plug, aluminium plug and liquid injection hole improves sealing property.There is following defect in this hermetically-sealed construction: 1, the top surface edge of aluminium plug and liquid injection hole edge are bonded to each other and form splicing seams, the path of welding that laser forms along described splicing seams carries out weld job, due to aluminium, surface and the shell wall side at liquid injection hole edge are planar structure beyond the Great Wall, aluminium liquid has the larger flowing space, the aluminium liquid of fusing can spread and be set in splicing seams periphery to surrounding, make splicing seams top can only assemble a small amount of aluminium liquid and solidify covering, cause the weld strength between aluminium plug and housing not good enough, in the time that enclosure interior is subject to powerful interior pressure, the weldering spot of weld can come off, and there is causing the hole of electrolyte leakage, product was lost efficacy in advance, 2, complete after weld job, aluminium liquid solidifies the weldering spot meeting evagination of formation in housing outer surface, both can bring inconvenience to follow-up clamping operation, also affects outward appearance, 3, solid aluminum plug is difficult for producing deformation because having compared with macrostructure intensity, in the time that it fills in liquid injection hole easily because size and liquid injection hole do not mate the situation that cannot be seated of occurring, both the machining accuracy of aluminium plug had been proposed to higher requirement, the refitting of also need to doing over again in the time that aluminium plug cannot be seated, greatly affects production efficiency, 4, plug can go bad because service time is long, and electrolyte in contamination energy holder, and then affects the life-span of energy storage device.
Utility model content
In order to solve the deficiencies in the prior art, the utility model provides a kind of liquid injection hole hermetically-sealed construction with concave cock body, the flowing space by restriction aluminium liquid is guaranteed its accumulation and is set in cock body and the junction of liquid injection hole, the utility model also provides a kind of liquid injection hole hermetically-sealed construction that can hide by step groove weldering spot, facilitates follow-up clamping operation.
The utility model is realized in the following manner: a kind of liquid injection hole hermetically-sealed construction with concave cock body, the cock body that comprises housing, runs through the liquid injection hole of described housing top cover and mate with described liquid injection hole, described cock body is plugged in described liquid injection hole, the upper surface of described cock body has an inner groovy, the side wall profile of described inner groovy and described cock body lateral wall outline, and form the cell wall that thickness is 0.2-1mm, described cell wall end face and described liquid injection hole external end edge mouth plane flush, and by being welded and fixed cock body.
Cock body structure is improved to the concave inward structure of top groove on panel surface by the original solid construction with flat top surface, and by cell wall THICKNESS CONTROL within the scope of 0.2-1mm, splicing seams is sharply reduced near the plane width of cock body one side, because being limited, the flowing space can only be deposited in described splicing seams top cooled and solidified one-tenth weldering spot by the aluminium liquid of laser fusion, the thicker weldering spot gathering by splicing seams top between described cock body and housing is realized affixed, and when welding, adopt laser welding, make the weldering spot of adjacent welds overlapping successively, and above splicing seams, form sealant, both guaranteed the bonding strength between cock body and housing, also guarantee the sealing property between cock body and housing, effectively prevent from causing because of electrolyte leakage the situation that energy storage device was lost efficacy in advance, guarantee product useful life.In addition, when aluminium liquid is during to splicing seams two side flow and near the inside edge of described cell wall end face, because liquid has tension force, make aluminium liquid rest on all the time cell wall end face, aluminium liquid can not flow down along described inner groovy sidewall because of cell wall end face short of width.Because sealing property between cock body and housing improves, there is not electrolyte leakage hidden danger, plug can be installed, both simplified structure and operation, also reduced costs; In addition, owing to having inner groovy on cock body, make cock body can deformation occur according to the wall profile of liquid injection hole in the time inserting liquid injection hole, make cock body lateral wall mate laminating with liquid injection hole madial wall, effectively improve sealing structure performance; With respect to original structure with plug, this structure is more succinct, and the situation that can not pollute because plug is rotten electrolyte occurs.
As preferably, described liquid injection hole has step groove near the upper port edge of described top cover upper surface, makes described liquid injection hole upper port be embedded in described top cover, and the described step groove degree of depth is 0.5-1.5mm.Step groove is opened in the upper surface of described top cover, the upper port of described liquid injection hole is positioned at described step groove bottom center, lower port is opened in the lower surface of described top cover, described cock body is planted and is arranged in liquid injection hole upper port, cock body upper surface flushes with described step groove bottom surface, the weldering spot that makes to cover on splicing seams is also hidden in described step groove, has both facilitated follow-up clamping operation, also having improved aesthetic appearance.
As preferably, the described step groove degree of depth is 0.5-1.5mm.The step groove degree of depth both should match with weldering spot thickness, and making to weld spot can complete being hidden in described step groove, can not be too shallow and can not hide weldering spot, and can not be too dark and affect shell structure intensity and increase aluminium plug installation difficulty.
As preferably, described cock body is planted and is connected in described liquid injection hole with interference fit.Outside the cell wall of cock body with between liquid injection hole madial wall, closely contact, and effectively increase contact area between the two, and then guarantee the sealing property of junction between the two.
As preferably, described liquid injection hole cross section is all rounded.Big up and small down round table-like of described cock body, its miner diameter end edge is provided with fillet.Liquid injection hole and cock body cross section are circle, are convenient to both and connect with interference fit coupling.The fillet at cock body miner diameter end edge is conducive to it and inserts smoothly in liquid injection hole.
As preferably, described cock body, housing are alumiaum article.
As preferably, described welding adopts laser welding.
The beneficial effects of the utility model:
1, cock body structure is improved to the concave inward structure of top groove on panel surface by the original solid construction with flat top surface, and by cell wall THICKNESS CONTROL within the scope of 0.2-1mm, because being limited, the flowing space can only be deposited in described splicing seams top by the aluminium liquid of laser fusion and cooled and solidified becomes overlapped weldering spot, it is affixed that the thicker weldering spot gathering by splicing seams top between described cock body and housing is realized sealing, both guaranteed the bonding strength between cock body and housing, also guarantee the sealing property between cock body and housing, effectively prevent from causing because of electrolyte leakage the situation that energy storage device was lost efficacy in advance, guarantee product useful life, ,
2, step groove indent is in described top cover upper surface, and cock body upper surface flushes with described step groove bottom surface, and the weldering spot that makes to cover on splicing seams is also hidden in told step groove, has both facilitated follow-up clamping operation, does not also affect the appearance.
3, because sealing property between cock body and housing improves, do not have electrolyte leakage hidden danger, plug can be installed, both simplified structure and operation, also reduced costs.
4. because aluminium plug adopts the concave inward structure with groove, not high to the requirement on machining accuracy of aluminium plug, in the time that liquid injection hole filled in by aluminium plug by machine, aluminium plug edge is subject to aluminium wall pressure power around and can draws in from trend center, and aluminium plug is easily seated, and has guaranteed production efficiency.
5. because sealing property between cock body and housing improves, plug can be installed, the pollution hidden trouble to product function material while not existing plug material abnormal, both simplified structure and operations, also reduce costs and improve the stability of product function.
Accompanying drawing explanation
Fig. 1 is the utility model sectional structure schematic diagram;
Fig. 2 is the utility model plan structure schematic diagram;
Fig. 3 is cock body perspective view;
Fig. 4 is cock body sectional structure schematic diagram;
In figure: 1, housing, 2, liquid injection hole, 3, cock body, 4, inner groovy, 5, cell wall, 6, step groove, 7, fillet, 8, splicing seams, 9, weldering spot.
Embodiment
Below in conjunction with specification drawings and specific embodiments, substantive distinguishing features of the present utility model is further described.
A kind of liquid injection hole hermetically-sealed construction with concave cock body as shown in Figure 1, by housing 1, run through the liquid injection hole 2 of described housing 1 top cover and the cock body 3 that mates with described liquid injection hole 2 forms, described cock body 3 is plugged in described liquid injection hole 2, the upper surface of described cock body 3 has an inner groovy 4(as shown in Figure 3), the side wall profile of described inner groovy 4 and described cock body 3 lateral wall outline, and form the cell wall 5 that thickness is 0.2-1mm, described cell wall 5 end faces and described liquid injection hole 2 external end edge mouth planes flush, and by being welded and fixed cock body; Described liquid injection hole 2 has step groove 6 near the upper port edge of described top cover upper surface, makes described liquid injection hole 2 upper port be embedded in described top cover, and described step groove 6 degree of depth are 0.5-1.5mm; Described step groove 6 degree of depth are 0.5-1.5mm; Described cock body 3 is planted and is connected in described liquid injection hole 2 with interference fit; Described liquid injection hole 2 cross sections are all rounded.Big up and small down round table-like of described cock body 3, its miner diameter end edge is provided with fillet 7(as shown in Figure 4); Described cock body 3, housing 1 are alumiaum article; Described welding adopts laser welding.
In practical operation, described liquid injection hole 2 is preferably arranged on the top cover of described housing 1, also can liquid injection hole 2 positions be arranged on the sidewall of described housing 1 according to actual conditions, also should be considered as specific embodiment of the utility model.
In practical operation, described cock body 3 passes in the described liquid injection hole 2 of the rear insertion of described step groove 6 by its miner diameter end, and cock body 3 bigger diameter end end faces are flushed with described step groove 6 bottom surfaces, the splicing seams 8 forming along described cock body 3 and housing 1 by laser again carries out weld job, in the time of welding, the aluminum material at splicing seams 8 places is fused into by LASER HEATING the aluminium liquid that scatters mobile, because the cell wall 5 end face width of splicing seams 8 one sides are less, greatly limit the aluminium liquid flowing space, and can not cross cell wall 5 top edge and flow down along cell wall 5 medial surfaces because liquid tension effect makes aluminium liquid, aluminium liquid is finally limited in splicing seams 8 tops and solidifies forming weldering spot 9, the mutual stacked fish scale-shaped that presents of adjacent weldering spot 9, one stacked one deck, realize seal welding (as shown in Figure 2).
In concrete operations, cell wall 5 thickness of described cock body 3 are 0.2-1mm.The first embodiment: in the time that cell wall 5 thickness are 0.2mm, because the aluminium liquid flowing space is less, weldering spot 9 overlapping regions between adjacent welds are more, and weldering spot 9 is piled up also thicker, there is good sealing property, but because the contact area between weldering spot 9 and cell wall 5 end faces is less, make the bonding strength between stopper and housing 1 not good enough.The second embodiment: in the time that cell wall 5 thickness are 0.6mm, because the aluminium liquid flowing space can be larger than the first embodiment, weldering spot 9 overlapping regions between adjacent welds are suitable for, and weldering spot 9 is piled up also more moderate, there is good sealing property, but because the contact area between weldering spot 9 and cell wall 5 end faces is moderate, make the bonding strength between stopper and housing 1 also better.The 3rd embodiment: in the time that cell wall 5 thickness are 1mm, because the aluminium liquid flowing space is larger, weldering spot 9 overlapping regions between adjacent welds are less, and weldering spot 9 is piled up also because the flowing space large two becomes thinner, make sealing property not good enough, and because the contact area between weldering spot 9 and cell wall 5 end faces is larger, make to there is good bonding strength between stopper and housing 1.
In concrete operations, described step groove 6 degree of depth are 0.5-1.5mm; The concrete degree of depth should be determined according to weldering spot 9 thickness, and in the time that step groove 6 degree of depth are 0.5mm, it can hide the weldering spot 9 of thinner thickness, but little on housing 1 structural strength impact; In the time that step groove 6 degree of depth are 1mm, it can hide the moderate weldering spot 9 of thickness, and moderate on housing 1 structural strength impact; In the time that step groove 6 degree of depth are 1.5mm, it can hide the weldering spot 9 that thickness is larger, but larger on housing 1 structural strength impact; In practical operation, step groove 6 degree of depth, as long as meeting to hide welds the demand of spot 9 and can not affect greatly housing 1 structural strength, all should be considered as specific embodiment of the utility model.
In concrete operations, described liquid injection hole 2 and described cock body 3 mate mutually, both cross-sectional profiles are circle, being convenient to both pegs graft mutually, also can change according to actual conditions both cross-sectional profiles, for example polygon, mutually plants and is connected with liquid injection hole 2 as long as be convenient to cock body 3, all should be considered as specific embodiment of the utility model.
In concrete operations, described liquid injection hole 2 is positioned at housing 1 top cover, also can liquid injection hole 2 be arranged on to housing 1 sidewall according to actual conditions, and hermetically-sealed construction is identical with the technical program, also should be considered as specific embodiment of the utility model.
Claims (7)
1. the liquid injection hole hermetically-sealed construction with concave cock body, comprise housing (1), the cock body (3) that runs through the liquid injection hole (2) of described housing (1) top cover and mate with described liquid injection hole (2), described cock body (3) is plugged in described liquid injection hole (2), the upper surface that it is characterized in that described cock body (3) has an inner groovy (4), the side wall profile of described inner groovy (4) and described cock body (3) lateral wall outline, and form the cell wall that thickness is 0.2-1mm (5), described cell wall (5) end face and described liquid injection hole (2) external end edge mouth plane flush, and by being welded and fixed described cock body (3).
2. a kind of liquid injection hole hermetically-sealed construction with concave cock body according to claim 1, it is characterized in that described liquid injection hole (2) has step groove (6) near the upper port edge of described top cover upper surface, make described liquid injection hole (2) upper port be embedded in described top cover, described step groove (6) degree of depth is 0.5-1.5mm.
3. a kind of liquid injection hole hermetically-sealed construction with concave cock body according to claim 2, is characterized in that described cock body (3) is connected in described liquid injection hole (2) with interference fit plant.
4. a kind of liquid injection hole hermetically-sealed construction with concave cock body according to claim 3, is characterized in that described liquid injection hole (2) cross section is all rounded.
5. a kind of liquid injection hole hermetically-sealed construction with concave cock body according to claim 4, is characterized in that big up and small down round table-like of described cock body (3), and its miner diameter end edge is provided with fillet (7).
6. a kind of liquid injection hole hermetically-sealed construction with concave cock body according to claim 5, is characterized in that described cock body (3), housing (1) are alumiaum article.
7. a kind of liquid injection hole hermetically-sealed construction with concave cock body according to claim 6, is characterized in that described welding adopts laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036976.XU CN203659981U (en) | 2014-01-21 | 2014-01-21 | Filling port sealing structure with inward-concave plug body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420036976.XU CN203659981U (en) | 2014-01-21 | 2014-01-21 | Filling port sealing structure with inward-concave plug body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203659981U true CN203659981U (en) | 2014-06-18 |
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ID=50926334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420036976.XU Expired - Lifetime CN203659981U (en) | 2014-01-21 | 2014-01-21 | Filling port sealing structure with inward-concave plug body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203659981U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008577A1 (en) * | 2015-07-15 | 2017-01-19 | 宁德时代新能源科技股份有限公司 | Welding assembly for liquid injection hole of secondary battery |
| CN107052421A (en) * | 2017-04-18 | 2017-08-18 | 江苏扬碟钻石工具有限公司 | A kind of high temperature alloy slotting cutter |
-
2014
- 2014-01-21 CN CN201420036976.XU patent/CN203659981U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017008577A1 (en) * | 2015-07-15 | 2017-01-19 | 宁德时代新能源科技股份有限公司 | Welding assembly for liquid injection hole of secondary battery |
| US10581058B2 (en) | 2015-07-15 | 2020-03-03 | Contemporary Amperex Technology Co., Limited | Welding assembly for liquid-injection hole of secondary battery |
| CN107052421A (en) * | 2017-04-18 | 2017-08-18 | 江苏扬碟钻石工具有限公司 | A kind of high temperature alloy slotting cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200825 Address after: 322103 no.509-8, Ganxi West Street, Linjiang community, Jiangbei street, Dongyang City, Jinhua City, Zhejiang Province (self declaration) Patentee after: Zhejiang Changlin Electronic Co.,Ltd. Address before: 310019, Jianggan District, Zhejiang, nine Ring Road, No. 63, 1,, 2119, room 2 Patentee before: HANGZHOU SHANHEJIANG NEW ENERGY TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 509-8, Ganxi West Street, Linjiang Community, Jiangbei Street, Dongyang City, Jinhua City, Zhejiang Province, 322103 Patentee after: Zhejiang Layer Forest Electronics Co., Ltd. Address before: 322103 no.509-8, Ganxi West Street, Linjiang community, Jiangbei street, Dongyang City, Jinhua City, Zhejiang Province (self declaration) Patentee before: Zhejiang Changlin Electronic Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |