CN203826461U - End-surface-welded cylindrical lithium battery - Google Patents
End-surface-welded cylindrical lithium battery Download PDFInfo
- Publication number
- CN203826461U CN203826461U CN201320840798.1U CN201320840798U CN203826461U CN 203826461 U CN203826461 U CN 203826461U CN 201320840798 U CN201320840798 U CN 201320840798U CN 203826461 U CN203826461 U CN 203826461U
- Authority
- CN
- China
- Prior art keywords
- cylindrical lithium
- end cap
- lithium battery
- battery
- shell
- Prior art date
- 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
Links
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 39
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000002788 crimping Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 210000005069 ears Anatomy 0.000 description 3
- 230000005405 multipole Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The utility model discloses an end-surface-welded cylindrical lithium battery, which belongs to the technical field of a chemical power supply. The end-surface-welded cylindrical lithium battery comprises a shell and a cell which is wrapped in the shell, wherein a mandrel is arranged on the center of the cell, the surface of a positive skeleton and the surface of a negative skeleton exposed on two ends of the cell are respectively a plane structure, a positive current collector is welded on the surface of the positive skeleton, a negative current collector is welded on the surface of the negative skeleton, negative conductive tabs which are respectively welded on the surfaces of the positive current collector and the negative current collector are respectively provided with a positive conductive tab and a negative conductive tab, the outer side end surface of the positive conductive tab and the outer side end surface of the negative conductive tab are respectively connected with an end cover conductive disc in a welding manner, a front open end and a rear open end of the shell are respectively connected with an end cover plate in a welding manner, and the end cover conductive disc is encapsulated in the shell through the end cover plate. The end-surface-welded cylindrical lithium battery has the advantages that the product is simple and convenient to manufacture and good in current collection effect, so that the performance of a lithium power battery is greatly improved; meanwhile, by adopting the end-surface-welded cylindrical lithium battery, the automatic production for assembling the high-power ultrahigh-capacity cylindrical lithium power battery can be facilitated.
Description
Technical field
The utility model relates to a kind of lithium battery structure, and specifically a kind of cylindrical lithium battery of end face weldering, belongs to technical field of chemical power.
Background technology
Along with the development of cordless power tool, wireless household electrical appliances, electric automobile and wind, photoelectromotive force, particularly increasing to the demand of lithium dynamical battery to the battery of power type, accumulation energy type.Lithium battery large-capacity high-power performance more and more receives publicity.All the time, due to afflux problem, lithium electricity industry generally all thinks that low capacity conventional batteries adopts roundlet column type explained hereafter, and high power capacity or high-power battery adopt square laminate patch explained hereafter.
As everyone knows, the positive and negative electrode skeleton of lithium battery pole slice is Copper Foil and aluminium foil, and thickness all only has 20 microns of left and right, and thin metal forming like this is generally believed in the industry and cannot adopt end face Welding.So up to now, general cylindrical lithium battery all adopts monopole ear afflux, and the lithium battery of power type adopts multi pole ears afflux, and square laminated type technique, has appearred again in the lithium dynamical battery of high power, ultra-high capacity subsequently.Although lithium dynamical battery laminate patch technique has solved some problems, its complex process, the die-cut section of pole piece is more, easily pierces through barrier film and causes short circuit, or produce negative reaction, and mechanization is not easy to realize, and equipment investment is large, and production efficiency is low.
When prior art is assembled, no matter be columniform or square, be all to adopt monopole ear or multi pole ears current collection mode, not only efficiency is low, and battery quality is not high yet.Therefore no matter be all catchment effects of upper surface weldering and not of multi pole ears mode or the current collection mode high power performance that adopts laminated type far away.Although end face welding technology also has application on the conventional motive-power batteries such as Ni-MH battery, nickel-cadmium cell, its technique and collector all cannot directly be applied in lithium dynamical battery field.The restraining factors one of most critical are that Copper Foil and the aluminium foil skeleton that the pole piece positive and negative electrode of battery is very thin cannot be processed, the 2nd, be not suitable for the collector that lithium battery end face welds.
Summary of the invention
The utility model is for the problems referred to above, a kind of cylindrical lithium battery of end face weldering is provided, this battery manufacture is easy, catchment effect is good, the performance of lithium dynamical battery is greatly improved, this battery also contributes to the automated production of high power, the assembling of ultra-high capacity cylinder lithium dynamical battery simultaneously, and its technical scheme adopting is as follows:
A kind of cylindrical lithium battery of end face weldering, comprise shell and be coated on the battery core in shell, there is the plug in axial direction arranging at the center of battery core, just expose at battery core two ends, negative pole skeleton surface is planar structure, and at anodal skeleton surface soldered plus plate current-collecting body, at negative pole skeleton surface soldered negative current collector, plus plate current-collecting body and negative pole currect collecting surface are welded with respectively anodal conduction lug and negative pole conduction lug, anodal conduction lug outboard end face and negative pole conduction lug outboard end face are welded to connect respectively an end cap conductive plate, former and later two openends of shell are welded to connect respectively an end cap cover plate, end cap cover plate is packaged in end cap conductive plate in shell, an end cap lid surface is fixed with anodal screw rod therein, in another end cap lid surface, be fixed with negative pole screw rod.
On described anodal screw rod, offer liquid injection hole, liquid injection hole is inner links up battery core inner chamber, and steel ball is set in liquid injection hole; Negative pole screw rod end is provided with safe valve opening.
Described plus plate current-collecting body comprises flow guiding disc, on described flow guiding disc, offer centre bore, described flow guiding disc radial surface is provided with welding groove, described welding groove is divided into three above quadrants by flow guiding disc surface, in one of them quadrant, be provided with anodal conduction lug, described anodal conduction lug is connected with flow guiding disc one, in all the other quadrants, offers delivery hole.
Described flow guiding disc radial surface is provided with four welding grooves, described welding groove is divided into four quadrants by flow guiding disc surface, in one of them quadrant, be provided with anodal conduction lug, described anodal conduction lug is connected with flow guiding disc one, in its excess-three quadrant, offers delivery hole.
Described delivery hole is isosceles right triangle shape, and leg-of-mutton right angle fixed point is pointed to flow guiding disc center.
Described shell inner cavity two ends are respectively equipped with one for limiting the crimping sealing ring of battery core axial endplay.
Described shell two ends are respectively equipped with battery case, and the recess of described two battery cases is pressed in respectively on plus plate current-collecting body, negative current collector.
Described end cap cover plate medial surface is provided with insulation cushion under end cap, and end cap cover plate lateral surface is provided with insulation cushion on end cap.
Described negative pole screw rod, anodal screw rod are fixed on corresponding end cap cover plate by nut circle respectively.
The utility model has the advantage of:
The utility model product is manufactured easy, and catchment effect is good, and the performance of lithium dynamical battery is greatly improved, and this battery also contributes to the automated production of high power, the assembling of ultra-high capacity cylinder lithium dynamical battery simultaneously; In addition this product adopts bolt to make conductive pole, when needs are used electrokinetic cell combination, has omitted combination welder order, can also adapt to the needs of high current charge-discharge simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model the first execution mode;
Fig. 2 is the structural representation of the utility model the second execution mode;
Fig. 3 is the structural representation of plus plate current-collecting body or negative current collector.
Embodiment
Below in conjunction with the drawings and specific embodiments, the cylindrical lithium battery of end face weldering of the present utility model is further described.
In Fig. 1～Fig. 3, comprise insulation cushion 4 on insulation cushion 2 under end cap conductive plate 1, end cap, end cap cover plate 3, end cap, nut circle 5, anodal screw rod 6, liquid injection hole 7, anodal conduction lug 8, crimping sealing ring 9, steel ball 10, shell 11, battery core 12, plug 13, plus plate current-collecting body 14, flow guiding disc 14-1, welding groove 14-2, centre bore 14-3, delivery hole 14-4, negative pole screw rod 15, safe valve opening 16, negative pole conduction lug 17, negative current collector 18, battery case 19 etc.
As Fig. 1, shown in Fig. 2, the utility model is a kind of cylindrical lithium battery of end face weldering, comprise shell 11 and be coated on the battery core 12 in shell 11, plug 13 is arranged at the centre of gyration of described battery core 12 along its length, just expose at described battery core 12 two ends, negative pole skeleton surface is planar structure, and at anodal skeleton surface soldered plus plate current-collecting body 14, at negative pole skeleton surface soldered negative current collector 18, the negative pole conduction lug 17 outside end faces of the positive pole conduction lug 8 outside end faces of described plus plate current-collecting body 14 surface soldered and negative current collector 18 surface soldered are welded to connect respectively an end cap conductive plate 1, at described shell 11 former and later two openends, be welded to connect respectively an end cap cover plate 3, described end cap cover plate 3 is packaged in end cap conductive plate 1 in shell 11, end cap cover plate 3 surfaces are fixed with anodal screw rod 6 therein, on described anodal screw rod 6, offer liquid injection hole, inner battery core 12 inner chambers of linking up of liquid injection hole, and a steel ball 10 is set in liquid injection hole, on another end cap cover plate 3 surfaces, be fixed with negative pole screw rod 15, and be provided with safe valve opening 16 in negative pole screw rod 15 ends.
As shown in Figure 3, described plus plate current-collecting body 14 comprises flow guiding disc 14-1, on described flow guiding disc 14-1, offer centre bore 14-3, flow guiding disc 14-1 radial surface is provided with four welding groove 14-2, described welding groove 14-2 is divided into four quadrants by flow guiding disc 14-1 surface, in one of them quadrant, be provided with anodal conduction lug 8, described anodal conduction lug 8 is connected with flow guiding disc 14-1 one, in its excess-three quadrant, offers delivery hole 14-4.Negative current collector 18 structures are identical with above-mentioned plus plate current-collecting body 14, and the difference of itself and plus plate current-collecting body 14 is when collector is during for battery cathode, the conduction lug called after negative pole conduction lug 17 in collector.
Described delivery hole 14-4 is isosceles right triangle shape, and leg-of-mutton right angle fixed point is pointed to flow guiding disc 14-1 center.
For preventing that battery core 12 from, at the interior generation axial endplay of shell 11, can adopt various ways to realize above-mentioned purpose, wherein a kind of is structure as shown in Figure 2, at shell 11 inner chamber two ends, is respectively equipped with one for limiting the crimping sealing ring 9 of battery core 12 axial endplays.
The utility model also shows another version, as shown in Figure 1, at shell 11 two ends, be respectively equipped with battery case 19, and the recess of described two battery cases 19 is pressed in respectively on plus plate current-collecting body 14, negative current collector 18.
Described end cap cover plate 3 medial surfaces are provided with insulation cushion 2 under end cap, and end cap cover plate 3 lateral surfaces are provided with insulation cushion 4 on end cap.
Described negative pole screw rod 15, anodal screw rod 6 are fixed on corresponding end cap cover plate 3 by nut circle 5 respectively.
The utility model product is the following processing step of main employing in manufacturing process: coiling battery core 12, then adopt ultrasonic wave to rub the white end face that stays that ordinary telegram core positive and negative electrode exposes, then be shaped to identical with battery core 12 diameters and guarantee surfacing, so just can fully contact with plus plate current-collecting body 14, negative current collector 18, be convenient to the welding of two collectors; After being wrapped with to insulating tape, above-mentioned semi-finished product two ends pack 11 li, shell into.Then respectively positive and negative electrode is operated, for negative pole end: produce axial endplay in order to prevent that battery core 12 from sending out in shell 11, at the inner two ends of shell 11, add respectively press seal circle 9 or corresponding to battery core 12 two ends, roll respectively place's battery case 19 on shell 11, end cap conductive plate 1 is welded on negative pole conduction lug 17, and insulation cushion 2 under end cap is set, then end cap cover plate 3 is installed, and the good sealing of welding, overlap successively subsequently screw rod insulated ring, add insulation cushion 4 on end cap, top nut circle 5; Whole operations that the process of positive terminal comprises above-mentioned negative pole end, and after top nut circle 5, to battery dry, vacuumize, fluid injection.
The utility model product is manufactured easy, and catchment effect is good, and the performance of lithium dynamical battery is greatly improved, and this battery also contributes to the automated production of high power, the assembling of ultra-high capacity cylinder lithium dynamical battery simultaneously; In addition this product adopts bolt to make conductive pole, when needs are used electrokinetic cell combination, has omitted combination welder order, can also adapt to the needs of high current charge-discharge simultaneously.
Claims (9)
1. the cylindrical lithium battery of end face weldering, comprise shell (11) and be coated on the battery core (12) in shell (11), there is the plug (13) in axial direction arranging at the center of battery core (12), it is characterized in that: just expose at described battery core (12) two ends, negative pole skeleton surface is planar structure, and at anodal skeleton surface soldered plus plate current-collecting body (14), at negative pole skeleton surface soldered negative current collector (18), described plus plate current-collecting body (14) and negative current collector (18) surface are welded with respectively anodal conduction lug (8) and negative pole conduction lug (17), anodal conduction lug (8) outside end face and negative pole conduction lug (17) outside end face are welded to connect respectively an end cap conductive plate (1), former and later two openends of described shell (11) are welded to connect respectively an end cap cover plate (3), described end cap cover plate (3) is packaged in end cap conductive plate (1) in shell (11), an end cap cover plate (3) surface is fixed with anodal screw rod (6) therein, on another end cap cover plate (3) surface, be fixed with negative pole screw rod (15).
2. according to the cylindrical lithium battery of end face weldering claimed in claim 1, it is characterized in that: on described anodal screw rod (6), offer liquid injection hole, liquid injection hole is inner links up battery core (12) inner chamber, and steel ball (10) is set in liquid injection hole; Negative pole screw rod (15) end is provided with safe valve opening (16).
3. according to the cylindrical lithium battery of end face weldering claimed in claim 1, it is characterized in that: described plus plate current-collecting body (14) comprises flow guiding disc (14-1), on described flow guiding disc (14-1), offer centre bore (14-3), described flow guiding disc (14-1) radial surface is provided with welding groove (14-2), described welding groove (14-2) is divided into three above quadrants by flow guiding disc (14-1) surface, in one of them quadrant, be provided with anodal conduction lug (8), described anodal conduction lug (8) is connected with flow guiding disc (14-1) one, in all the other quadrants, offer delivery hole (14-4).
4. according to the cylindrical lithium battery of end face weldering claimed in claim 3, it is characterized in that: described flow guiding disc (14-1) radial surface is provided with four welding grooves (14-2), described welding groove (14-2) is divided into four quadrants by flow guiding disc (14-1) surface, in one of them quadrant, be provided with anodal conduction lug (8), described anodal conduction lug (8) is connected with flow guiding disc (14-1) one, offers delivery hole (14-4) in its excess-three quadrant.
5. according to the cylindrical lithium battery of the end face weldering described in claim 3 or 4, it is characterized in that: described delivery hole (14-4) is isosceles right triangle shape, and leg-of-mutton right angle fixed point is pointed to flow guiding disc (14-1) center.
6. according to the cylindrical lithium battery of end face weldering claimed in claim 5, it is characterized in that: described shell (11) inner chamber two ends are respectively equipped with one for limiting the crimping sealing ring (9) of battery core (12) axial endplay.
7. according to the cylindrical lithium battery of end face weldering claimed in claim 5, it is characterized in that: described shell (11) two ends are respectively equipped with battery case (19), and the recess of described two battery cases (19) is pressed in respectively on plus plate current-collecting body (14), negative current collector (18).
8. according to the cylindrical lithium battery of end face weldering claimed in claim 1, it is characterized in that: described end cap cover plate (3) medial surface is provided with insulation cushion under end cap (2), end cap cover plate (3) lateral surface is provided with insulation cushion on end cap (4).
9. according to the cylindrical lithium battery of end face weldering claimed in claim 1, it is characterized in that: described negative pole screw rod (15), anodal screw rod (6) are fixed on corresponding end cap cover plate (3) by nut circle (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840798.1U CN203826461U (en) | 2013-12-19 | 2013-12-19 | End-surface-welded cylindrical lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320840798.1U CN203826461U (en) | 2013-12-19 | 2013-12-19 | End-surface-welded cylindrical lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826461U true CN203826461U (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320840798.1U Expired - Lifetime CN203826461U (en) | 2013-12-19 | 2013-12-19 | End-surface-welded cylindrical lithium battery |
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| Country | Link |
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| CN (1) | CN203826461U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730623A (en) * | 2013-12-19 | 2014-04-16 | 周培荣 | End surface welding cylindrical lithium battery |
| CN113517519A (en) * | 2021-03-19 | 2021-10-19 | 天津荣盛盟固利新能源科技有限公司 | Bus bar structure and welding method |
| CN114094162A (en) * | 2021-07-06 | 2022-02-25 | 江苏时代新能源科技有限公司 | Battery cell, battery, electric device, and method and device for manufacturing battery cell |
| CN115295860A (en) * | 2022-10-09 | 2022-11-04 | 深圳海润新能源科技有限公司 | Preparation method of secondary battery, secondary battery and battery module |
| WO2023011232A1 (en) * | 2021-08-04 | 2023-02-09 | 湖南时代联合新能源有限公司 | Cylindrical battery having anti-vibration and impact resistance effects |
-
2013
- 2013-12-19 CN CN201320840798.1U patent/CN203826461U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730623A (en) * | 2013-12-19 | 2014-04-16 | 周培荣 | End surface welding cylindrical lithium battery |
| CN113517519A (en) * | 2021-03-19 | 2021-10-19 | 天津荣盛盟固利新能源科技有限公司 | Bus bar structure and welding method |
| CN113517519B (en) * | 2021-03-19 | 2023-02-17 | 天津荣盛盟固利新能源科技有限公司 | Welding method |
| CN114094162A (en) * | 2021-07-06 | 2022-02-25 | 江苏时代新能源科技有限公司 | Battery cell, battery, electric device, and method and device for manufacturing battery cell |
| CN114122486A (en) * | 2021-07-06 | 2022-03-01 | 江苏时代新能源科技有限公司 | Battery cell, battery, electric device, and method and device for manufacturing battery cell |
| CN114122635A (en) * | 2021-07-06 | 2022-03-01 | 江苏时代新能源科技有限公司 | Battery cell, battery, electric device, and method and device for manufacturing battery cell |
| CN114094162B (en) * | 2021-07-06 | 2024-06-07 | 江苏时代新能源科技有限公司 | Battery cell, battery, electric equipment and manufacturing method and equipment of battery cell |
| CN114122486B (en) * | 2021-07-06 | 2024-06-07 | 江苏时代新能源科技有限公司 | Battery cell, battery, electric equipment and manufacturing method and equipment of battery cell |
| CN114122635B (en) * | 2021-07-06 | 2024-06-07 | 江苏时代新能源科技有限公司 | Battery cell, battery, electric equipment and manufacturing method and equipment of battery cell |
| WO2023011232A1 (en) * | 2021-08-04 | 2023-02-09 | 湖南时代联合新能源有限公司 | Cylindrical battery having anti-vibration and impact resistance effects |
| CN115295860A (en) * | 2022-10-09 | 2022-11-04 | 深圳海润新能源科技有限公司 | Preparation method of secondary battery, secondary battery and battery module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENJIANG TIANCHUANG AUTOMATION TECHNOLOGY CO., LT Free format text: FORMER OWNER: ZHOU PEIRONG Effective date: 20150330 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 212012 ZHENJIANG, JIANGSU PROVINCE TO: 212021 ZHENJIANG, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150330 Address after: Phoenix Road 212021 Zhenjiang city of Jiangsu Province, Runzhou District No. 99 Patentee after: ZHENJIANG TIANCHUANG AUTOMATION TECHNOLOGY CO.,LTD. Address before: Phoenix Road 212012 Zhenjiang city of Jiangsu Province, Runzhou District Private Development Zone No. 99 Patentee before: Zhou Peirong |
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| CX01 | Expiry of patent term |
Granted publication date: 20140910 |
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| CX01 | Expiry of patent term |