CN208284552U - The uniform end face weld battery of fluid injection - Google Patents
The uniform end face weld battery of fluid injection Download PDFInfo
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- CN208284552U CN208284552U CN201820841156.6U CN201820841156U CN208284552U CN 208284552 U CN208284552 U CN 208284552U CN 201820841156 U CN201820841156 U CN 201820841156U CN 208284552 U CN208284552 U CN 208284552U
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- battery
- anode collection
- disk
- fluid injection
- negative
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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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- Filling, Topping-Up Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
This application discloses a kind of uniform end face weld batteries of fluid injection, comprising: battery case is contained in the intracorporal pole group of the battery case, the current collecting plates set on pole group end, the fixed electrode terminal with the battery case, the liquid injection hole on the electrode terminal；At least three spaced apart delivery holes are offered on the current collecting plates.The application can accelerate the speed and uniformity of electrolyte infiltration battery pole group, improve battery liquid-filling efficiency and battery quality.
Description
Technical field
This application involves field of batteries, and in particular to a kind of end face weld battery, especially one kind being capable of uniformly filling electrolysis
The end face weld battery of liquid.
Background technique
Lithium ion battery because having many advantages, such as that energy density is high, power density height, has extended cycle life, memory-less effect,
It is widely applied in the equipment such as smart phone, electric bicycle and new-energy automobile, becomes and solve energy crisis and ring
The key of the global problems such as border pollution.Improved day by day with electric vehicle engineering, electric car and hybrid electric vehicle are from people
Daily life it is more and more closer, there is huge business opportunities, while electric car provides the lithium ion battery of energy to for it
Performance more stringent requirements are proposed: high capacity, high magnification.The internal resistance of end face weld lithium ion battery is low, and catchment effect is good, especially
Suitable for high capacity, high magnification application.
Electrolyte is one of four big critical materials of lithium ion battery, is known as " blood " of lithium ion battery.Electrolyte is
The normal work of lithium ion battery plus-negative plate provides ion conducting.Therefore in the process of lithium ion battery, fluid injection link
It is particularly critical.But traditional electrolyte filling method is in anode cover board or negative cover center setting liquid injection hole, electrolyte is from note
After fluid apertures enters battery, always first penetrated into inside the group of pole since the central area of battery pole group positive or negative pole end face, until
After pole group central area absorbs a certain amount of electrolyte, electrolyte just starts to infiltrate the fringe region of pole group, therefore, pole group marginal zone
Domain electrolyte wetting velocity is slow, in order to make electrolyte sufficiently infiltrate battery pole piece, and guarantees the consistency of pole piece infiltration, often needs
It to stand for a long time, the fluid injection time is long, fluid injection low efficiency.In addition, in traditional electrolyte filling method, fluid injection and vacuumize in the same hole
Middle progress, first fluid injection vacuumize again, need to stand for a long time, this is but also the fluid injection efficiency of battery is very low.
Summary of the invention
The purpose of the application, is: in view of the above-mentioned problems, proposing a kind of uniform end face weld battery of fluid injection, it is intended to accelerate electrolyte
The speed and uniformity of battery pole group are infiltrated, battery liquid-filling efficiency and battery quality are improved.
The technical solution of the application is:
A kind of uniform end face weld battery of fluid injection, comprising:
Battery case,
It is contained in the intracorporal pole group of the battery case,
Current collecting plates set on pole group end,
The fixed electrode terminal with the battery case, and
Liquid injection hole on the electrode terminal；
At least three spaced apart delivery holes are offered on the current collecting plates.
The application further includes following preferred embodiment based on the above technical solution:
Each delivery hole along the circumferential direction arranges arrangement on the current collecting plates.
The electrode terminal includes positive terminal and negative terminal, and the positive terminal and the negative terminal are respectively arranged on
Two opposite ends of the battery case.
The liquid injection hole is set on the positive terminal, and the current collecting plates include anode collection disk and negative pole currect collecting disk, institute
It states anode collection disk and the negative pole currect collecting disk is respectively arranged on two opposite ends of the pole group, the delivery hole is set to the anode
On current collecting plates.
The positive terminal includes positive cover board and anode collection column, one end and the positive cover of the anode collection column
Plate is fixedly connected, the other end and the anode collection disk against and weld, the liquid injection hole perforation positive cover board and anode
Current-collecting pole offers numerous circumferentially spaced on the anode collection column, with that one end of anode collection disk welding
Several drain gap arranged and be connected with the liquid injection hole, the delivery hole are all set to the anode collection column and institute
State the periphery of anode collection disk welding region.
It is divided into positioned at the anode collection column and the anode collection pan portion on the inside of the anode collection disk welding region
Enclosed construction.
The annular of a circle diameter convex is formed on the anode collection column, with that one end of anode collection disk welding
Flange, the drain gap are set at the annular flange.
The negative terminal offers aspirating hole, offers gas port on the negative pole currect collecting disk.
The negative terminal includes negative cover and negative pole currect collecting column, one end and the negative cover of the negative pole currect collecting column
Plate is fixedly connected, the other end and the negative pole currect collecting disk against and weld, the gas port penetrates through the negative cover and cathode
Current-collecting pole.
The end face weld battery is the lithium ion battery of cylindrical structure.
The advantages of the application, is:
1, this battery of the application opens up multiple delivery holes on the current collecting plates close to fluid injection nose end, when electrolyte is from fluid injection
When inside battery is injected in hole, electrolyte relatively evenly can immerse pole group simultaneously from these delivery holes from each region, to mention
The consistency of high electrolyte infiltration pole group, improves battery liquid-filling efficiency and battery quality.
2, this battery of the application, can while battery both ends open up liquid injection hole and aspirating hole respectively, inject electrolyte
From aspirating hole to battery vacuum-pumping, so making electrolyte that can rapidly enter inside battery, infiltrates battery pole group, fluid injection is high-efficient,
Solves the problems, such as end face weld battery difficulty fluid injection.
3, liquid injection hole and aspirating hole is respectively set in positive and negative anodes end cap, waterproof ventilated membrane is arranged at aspirating hole, battery is in filling
When electrolyte, battery angle can arbitrarily be put, and be extracted out without having to worry about electrolyte from aspirating hole.Namely do not have to consider battery liquid-filling mistake
Angle in journey puts problem, simplifies fluid injection operation.
4, multiple gas ports are opened up on the current collecting plates of pumping nose end, so that the gas around battery pole group everywhere is complete
Full extraction, does not stay dead angle.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to required use in embodiment description
Attached drawing be briefly described, the drawings in the following description are only some examples of the present application, skill common for this field
For art personnel, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the decomposition texture schematic diagram of end face weld battery in the embodiment of the present application；
Fig. 2 is the structural schematic diagram of positive terminal in the embodiment of the present application；
Fig. 3 is the structural schematic diagram of positive cover board in the embodiment of the present application；
Fig. 4 is the structural schematic diagram of anode collection column in the embodiment of the present application；
Fig. 5 is the structural schematic diagram of anode collection disk in the embodiment of the present application；
Fig. 6 is the structural schematic diagram of negative pole currect collecting column in the embodiment of the present application；
Fig. 7 is the structural schematic diagram of negative pole currect collecting disk in the embodiment of the present application.
Wherein: 1- battery case, 2- liquid injection hole, 3- delivery hole, 4- anode collection disk, 5- negative pole currect collecting disk, 6- positive cover
Plate, 7- anode collection column, 8- drain gap, 9- annular flange, 10- aspirating hole, 11- gas port, 12- negative cover, 13- cathode
Current-collecting pole, 14- sealing ring.
Specific embodiment
Above scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The application and be not limited to limitation scope of the present application.Implementation condition used in the examples can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
Fig. 1 to Fig. 7 shows a preferred embodiment of this end face weld battery of the application, which is cylindrical lithium
Ion battery comprising battery case 1 and the pole group being contained in battery case 1 (i.e. core is not shown in the figure), battery case
Body 1 be cylindrical structure, at the top of open end be fixedly connected with positive terminal, bottom is fixedly connected with negative terminal.The both ends of pole group
Anode collection disk 4 and negative pole currect collecting disk 5 is respectively welded, and anode collection disk 4 and negative pole currect collecting disk 5 are by aforementioned positive electrode terminal
It is enclosed in inside battery case 1 with negative terminal.The liquid injection hole 2 for electrolyte to be perfused is offered on positive terminal.
The key improvements of the present embodiment are: multiple spaced apart delivery holes 3 are offered on above-mentioned anode collection disk 4.
In this way, electrolyte is introduced into positive terminal when the liquid injection hole 2 from electrolyte is from positive terminal injects inside battery
Cavity between anode collection disk 4, then pole group relatively evenly is immersed simultaneously from these above-mentioned delivery holes 3 from each region,
To improve the consistency of electrolyte infiltration pole group, battery liquid-filling efficiency and battery quality are improved.
In order to further enhance the homogeneity of electrolyte infiltration pole group, the above-mentioned each delivery hole 3 in the present embodiment is just
Arrangement is along the circumferential direction arranged on pole current collecting plates 4, and these delivery holes 3 are uniformly distributed as far as possible.
The specific structure of above-mentioned positive terminal is as shown in Figures 2 to 4 comprising positive cover board 6 and anode collection column 7.Just
Polar cap plate 6 is fixedly connected in a manner of mechanical press by sealing ring 14 with battery case 1.One end of anode collection column 7 and anode
Cover board 6 is welded and fixed, the other end and anode collection disk 4 against and weld.Liquid injection hole 2 penetrates through positive cover board 6 and anode collection column
7: positive cover board 6 is the annular sheet metal with axial center hole, and anode collection column 7 is the annulated column knot with axial center hole
Structure.On anode collection column 7, with anode collection disk 4 weld that one end offer it is numerous it is circumferentially spaced arrangement and with note
Multiple drain gap 8 that fluid apertures 2 is connected, above-mentioned each delivery hole 3 is all set to pole current-collecting pole 7 and anode collection disk 4 welds
Connect the periphery in region.And being located at 4 part of anode collection disk on the inside of anode collection column 7 and 4 welding region of anode collection disk is envelope
Close structure (not aperture).
The advantages of this arrangement are as follows: when to the battery filling electrolyte, electrolyte first enters anode collection from liquid injection hole 2
The inside of fluidization tower 7 and 4 welding region of anode collection disk, due to the blocking by 4 enclosed construction of anode collection disk, electrolyte can only
From the drain gap 8 of surrounding by flowing radially outward from all directions, pole group is penetrated into using the delivery hole 3 on anode collection disk 4
Inside, because being evenly distributed with multiple delivery holes on anode collection disk 4, electrolyte can be uniformly distributed in pole group anode end face
Multiple regions enter inside the group of pole simultaneously, accelerate absorption of the pole group to electrolyte, it is fast that electrolyte infiltrates pole group speed, the leaching of pole group
It is good to moisten consistency.
In order to facilitate the welding of anode collection column 7 and anode collection disk 4, above-mentioned anode collection column 7 is welded with anode collection disk 4
That one end connect is formed with the annular flange 9 of a circle diameter convex, and above-mentioned each drain gap 8 is set at the annular flange 9.
And aforementioned toroidal flange 9 can increase the bonding area of anode collection column 7 and anode collection disk 4.
In addition, being originally to offer aspirating hole 10 in above-mentioned negative terminal, while offering multiple on negative pole currect collecting disk 5
Every the gas port 11 of arrangement.So it can pass through the negative pressure vaccum-pumping equipment being connected with aspirating hole 10 while filling electrolyte
It is evacuated to the battery, immerses the speed of pole group to accelerate electrolyte, while eliminating the bubble of electrolyte at the group of pole.Gas port 11 can
It allows the air around the group of pole to extract out from each region, eliminates exhaust dead angle.
Setting waterproof ventilated membrane is blocked at above-mentioned aspirating hole 10, to prevent from electrolyte being extracted out in pumping process.
It is essentially identical with the structure of positive terminal for negative terminal comprising negative cover 12 and negative pole currect collecting column 13.It is negative
Polar cap plate 12 is annulus shape, and is an integral structure (such as Fig. 1) with battery case 1.One end of negative pole currect collecting column 13 and cathode
Cover board 12 is welded and fixed, the other end and negative pole currect collecting disk 5 against and weld.Above-mentioned gas port 11 penetrates through 12 He of negative cover
Negative pole currect collecting column 13.
In this example, the outer profile of above-mentioned anode collection disk 4 and negative pole currect collecting disk 5 is circle, the outer rim of anode collection disk 4
Side and the inner wall of battery case 1 seal against, and the exterior rim of negative pole currect collecting disk 5 is also supported with the sealing of the inner wall of battery case 1
It connects, the structural stability of battery so can be improved, while seeing seam of the electrolyte between current collecting plates and battery case when preventing fluid injection
Clearance flow enters pole group and reduces the uniformity of infiltration.
Certainly, liquid injection hole 2 and delivery hole 3 can also be separately positioned on negative terminal and negative pole currect collecting disk 5 by we, and
Aspirating hole 10 and gas port 11 are separately positioned on positive terminal and anode collection disk 4.In other words, the fluid injection in the present embodiment
Hole 2 and delivery hole 3 also may be respectively used for pumping and air guide, and the aspirating hole 10 and gas port 11 in the present embodiment can also be distinguished
For fluid injection and drain.
Above-described embodiment is only the technical concepts and features for illustrating the application, and its object is to allow people that can understand this Shen
Content please is simultaneously implemented accordingly, and the protection scope of the application can not be limited with this.It is all according to the application main technical schemes
The equivalent transformation or modification that Spirit Essence is done should all be covered within the scope of protection of this application.
Claims (10)
1. a kind of uniform end face weld battery of fluid injection, comprising:
Battery case (1),
It is contained in the intracorporal pole group of the battery case,
Current collecting plates set on pole group end,
The fixed electrode terminal with the battery case, and
Liquid injection hole (2) on the electrode terminal；
It is characterized in that, offering at least three spaced apart delivery holes (3) on the current collecting plates.
2. the uniform end face weld battery of fluid injection according to claim 1, which is characterized in that each delivery hole (3) exists
Arrangement is along the circumferential direction arranged on the current collecting plates.
3. the uniform end face weld battery of fluid injection according to claim 1, which is characterized in that the electrode terminal includes anode
Terminal and negative terminal, the positive terminal and the negative terminal are respectively arranged on two opposite ends of the battery case (1).
4. the uniform end face weld battery of fluid injection according to claim 3, which is characterized in that the liquid injection hole (2) is set to institute
It states on positive terminal, the current collecting plates include anode collection disk (4) and negative pole currect collecting disk (5), the anode collection disk (4) and institute
Two opposite ends that negative pole currect collecting disk (5) is respectively arranged on the pole group are stated, the delivery hole (3) is set to the anode collection disk (4)
On.
5. the uniform end face weld battery of fluid injection according to claim 4, which is characterized in that the positive terminal includes anode
Cover board (6) and anode collection column (7), one end of the anode collection column (7) is fixedly connected with the positive cover board (6), another
End and the anode collection disk (4) against and weld, the liquid injection hole (2) the perforation anode cover board (6) and anode collection column
(7), on the anode collection column (7) and the anode collection disk (4) welding that one end offer it is numerous along the circumferential direction between
Every arrangement and several drain gap (8) for being connected with the liquid injection hole (2), the delivery hole (3) be all set to it is described just
The periphery of pole current-collecting pole (7) and anode collection disk (4) welding region.
6. the uniform end face weld battery of fluid injection according to claim 5, which is characterized in that be located at the anode collection column
It (7) is partially enclosed construction with the anode collection disk (4) on the inside of anode collection disk (4) welding region.
7. the uniform end face weld battery of fluid injection according to claim 5, which is characterized in that on the anode collection column (7),
The annular flange (9) of a circle diameter convex, the drain gap are formed with that one end of the anode collection disk (4) welding
(8) it is set at the annular flange (9).
8. the uniform end face weld battery of fluid injection according to claim 4, which is characterized in that the negative terminal offers pumping
Stomata (10) offers gas port (11) on the negative pole currect collecting disk (5).
9. the uniform end face weld battery of fluid injection according to claim 8, which is characterized in that the negative terminal includes cathode
One end of cover board (12) and negative pole currect collecting column (13), the negative pole currect collecting column (13) is fixedly connected with the negative cover (12),
The other end and the negative pole currect collecting disk (5) against and weld, the gas port (11) penetrates through the negative cover (12) and cathode
Current-collecting pole (13).
10. the uniform end face weld battery of fluid injection according to claim 1, which is characterized in that the end face weld battery is circle
The lithium ion battery of column construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820841156.6U CN208284552U (en) | 2018-06-01 | 2018-06-01 | The uniform end face weld battery of fluid injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820841156.6U CN208284552U (en) | 2018-06-01 | 2018-06-01 | The uniform end face weld battery of fluid injection |
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| CN208284552U true CN208284552U (en) | 2018-12-25 |
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| CN201820841156.6U Active CN208284552U (en) | 2018-06-01 | 2018-06-01 | The uniform end face weld battery of fluid injection |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864524A (en) * | 2021-01-07 | 2021-05-28 | 合肥国轩高科动力能源有限公司 | Lithium battery shell and lithium battery |
| CN113764677A (en) * | 2021-08-18 | 2021-12-07 | 刘振 | Current collecting structure of battery and battery |
| CN114824282A (en) * | 2022-04-25 | 2022-07-29 | 四川英能基科技有限公司 | Current collector, insulating sheet, cover plate and end part structure of lithium battery |
| CN115241608A (en) * | 2022-08-20 | 2022-10-25 | 深圳市赛尔摩星科技有限公司 | Collector plate and cylindrical lithium battery |
| WO2023019374A1 (en) * | 2021-08-14 | 2023-02-23 | 宁德时代新能源科技股份有限公司 | Battery, battery manufacturing method and electric apparatus |
| WO2023065185A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, fabrication method therefor and fabrication device thereof, battery, and electrical apparatus |
| EP4044356A4 (en) * | 2020-10-29 | 2024-03-06 | Shenzhen Bak Power Battery Co Ltd | Collector plate and cylindrical lithium battery |
| WO2024104399A1 (en) * | 2022-11-17 | 2024-05-23 | 厦门新能安科技有限公司 | Cylindrical battery and electrical device |
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2018
- 2018-06-01 CN CN201820841156.6U patent/CN208284552U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4044356A4 (en) * | 2020-10-29 | 2024-03-06 | Shenzhen Bak Power Battery Co Ltd | Collector plate and cylindrical lithium battery |
| CN112864524A (en) * | 2021-01-07 | 2021-05-28 | 合肥国轩高科动力能源有限公司 | Lithium battery shell and lithium battery |
| WO2023019374A1 (en) * | 2021-08-14 | 2023-02-23 | 宁德时代新能源科技股份有限公司 | Battery, battery manufacturing method and electric apparatus |
| CN113764677A (en) * | 2021-08-18 | 2021-12-07 | 刘振 | Current collecting structure of battery and battery |
| WO2023065185A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, fabrication method therefor and fabrication device thereof, battery, and electrical apparatus |
| CN114824282A (en) * | 2022-04-25 | 2022-07-29 | 四川英能基科技有限公司 | Current collector, insulating sheet, cover plate and end part structure of lithium battery |
| CN115241608A (en) * | 2022-08-20 | 2022-10-25 | 深圳市赛尔摩星科技有限公司 | Collector plate and cylindrical lithium battery |
| CN115241608B (en) * | 2022-08-20 | 2024-03-22 | 深圳市赛尔摩星科技有限公司 | Current collecting plate and cylindrical lithium battery |
| WO2024104399A1 (en) * | 2022-11-17 | 2024-05-23 | 厦门新能安科技有限公司 | Cylindrical battery and electrical device |
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Effective date of registration: 20230821 Address after: Room J2243, No. 6, Lane 129, Huajiang Road, Jiading District, Shanghai, 201800 Patentee after: Shanghai Qike Network Technology Co.,Ltd. Address before: No. 39 Anzhi Street, Industrial Park, Suzhou City, Jiangsu Province, 215026 Patentee before: ANKAO (SUZHOU) ENERGY Co.,Ltd. |
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