CN208284546U - Cylindrical battery and its electrode current collecting component - Google Patents
Cylindrical battery and its electrode current collecting component Download PDFInfo
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- CN208284546U CN208284546U CN201820568950.8U CN201820568950U CN208284546U CN 208284546 U CN208284546 U CN 208284546U CN 201820568950 U CN201820568950 U CN 201820568950U CN 208284546 U CN208284546 U CN 208284546U
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
This application discloses a kind of electrode current collecting component of cylindrical battery and the cylindrical batteries of this component of configuration, electrode current collecting component includes the collector plate of conductive material and the electrode terminal of conductive material, that side of the collector plate towards the electrode terminal is fixedly installed a drainage column, through-hole compatible with the drainage column is offered on the electrode terminal, the drainage column is inserted into the through-hole, and make the drainage column and the electrode terminal sealing welding and making soldering to the annular gap region between the drainage column periphery wall and the through hole wall.The electrode current collecting modular construction of the application is compact, production is simple, current-carrying capability and welding performance are taken into account, so that the internal resistance of battery reduces, power-performance increases substantially, and so as to avoid battery temperature in use process excessively high, improves the homogeneity of battery pack temperature field, the Performance And Reliability for promoting battery pack, prolongs the service life.
Description
Technical field
This application involves field of batteries, and in particular to a kind of afflux component of cylindrical battery electrode and this group of configuration
The cylindrical battery of part.
Background technique
In recent years, with the continuous development in the markets such as hybrid vehicle, electric car, battery-operated motor cycle, battery
Effect be increasingly taken seriously, the quantity of integrated battery is increasing in the scale of battery group, that is, every group, to the function of battery
Rate output characteristics and reliability requirement are also higher and higher.
But the battery being widely used at present, such as nickel-metal hydride battery, nickel-cadmium cell, lithium ion battery and lead-acid battery,
The case where all there is the capacity of single battery is bigger, and power-performance is remarkably decreased.There are many reason of causing this result, but
Be, wherein most important one the reason is that the catchment effect of battery itself decline, internal resistance it is larger caused by.Especially in big electricity
When flowing charge and discharge, because the heat that battery generates cannot export in time, whole group battery will work at high temperature, thus lead to battery
The rapid degradation of performance；More seriously, if internal battery pack heat derives are uneven, will make Individual cells be in than
With working under the higher environment temperatures of battery other in group, to easily cause, this percentage of batteries is overcharged or over-discharge, performance cross early ageing
It moves back, so as to cause the reduction of whole group battery performance and the lost of life.In order to reduce internal battery pack heat local accumulation and temperature not
Uniformly, people have to increase the arrangement spacing between battery, take ventilation even water flowing etc. to force cooling provision, so not only
The volume of battery pack is increased, design difficulty and manufacturing cost are more improved.
The afflux structure of traditional accumulator anode and cathode is as shown below, uses the cylindrical type battery battery of metal-back
Shell 3 is the cylindrical type of hollow belt bottom, and the bottom of battery case 3 is also negative terminal simultaneously；Safety valve 4 is current sealed cell
On a kind of safety valve for generalling use, that is, positive terminal 2；8 one side of negative pole currect collecting plate passes through welding and cylindrical wound
The negative pole end of pole group (also referred to as electrode roll core) links together, while being linked together by welding and the shell bottom of battery case 3.
Anode collection disk 7 is linked together by the pole group (also referred to as electrode roll core) of welding and cylindrical wound, while by welding and just
Extreme son 2 links together.Safety valve 4 and battery case 3 realize electric insulation by the dead ring 5 of a plastic cement material, together
When play sealing function.
The making step of traditional storage battery: (1) being produced positive plate 9, the negative plate 10 of predetermined size by traditional technology,
Diaphragm 11 is placed between positive plate 9 and negative plate 10, is wound into cylindric pole group together, is i.e. winding pole piece.(2) electric resistance welding is used
Machine or laser welder weld together positive terminal and positive drainage strip 6；With resistance welder or laser welder by cathode
Terminal (battery case shell bottom) welds together with negative pole currect collecting plate 8；(3) pole for being wound into tubular is assembled into battery case 3, it will
The needle electrode of resistance welder is inserted into from the center of tubular pole group, and is contacted with anode collection plate 7, by another of resistance welder
Electrode is contacted and is welded with battery case bottom.Electrolyte is injected, then with similar method by the drainage element on anode collection plate
It is welded with safety valve 4.(4) battery case 3 and safety valve 4 are sealed by felt pad 5 using mechanical means and realizes electric insulation.
Above-mentioned anode collection plate 7, positive drainage strip 6, negative pole currect collecting plate 8 (especially drainage strip) are single-layer metal piece knot
Structure, when sheet metal than it is relatively thin when, be easy to weld, but carry electric current it is smaller.If increasing sheet thicknesses, simply to improve afflux
The current capacity of plate and drainage plate carrying, will increase dramatically welding difficulty.
Summary of the invention
The purpose of the application is: in view of the deficiencies of the prior art, this project proposes a kind of new structural cylindrical battery
The afflux component of pole and the cylindrical battery of this component of configuration, the electrode current collecting modular construction is compact, and production is simple, takes into account
Current-carrying capability and welding performance, so that the internal resistance of battery reduces, power-performance is increased substantially, so as to avoid using
Battery temperature is excessively high in journey, improves the homogeneity of battery pack temperature field, promotes the Performance And Reliability of battery pack, extends and uses the longevity
Life.
The technical solution of the application is:
A kind of electrode current collecting component of cylindrical battery, the electrode tip of collector plate and conductive material including conductive material
Son, which is characterized in that side of the collector plate towards the electrode terminal is fixedly installed a drainage column, the electrode tip
Through-hole compatible with the drainage column is offered on son, the drainage column is inserted into the through-hole and by drawing to described
Make soldering and make the drainage column and the electricity in annular gap region between fluidization tower periphery wall and the through hole wall
Extremely sub- sealing welding.
The application further includes following preferred embodiment based on the above technical solution:
It is described to be welded as laser welding.
It is described to be welded as Friction Stir Welding.
The collector plate, the drainage column and the electrode terminal are circular configuration, and the collector plate, described are drawn
Flowing plate and the electrode terminal are coaxially arranged.
The drainage column is welded and fixed with the collector plate.
The collector plate includes the first welding section at its center and the annulus positioned at the first welding section periphery
Second welding section of shape, first welding section is for welding the drainage column, and second welding section is for welding winded
Core.
A kind of cylindrical battery, comprising:
Cylindric battery case,
The winding pole piece being contained in the battery case,
It is contained in the anode collection plate in the battery case and with the anode welding of the winding pole piece,
It is contained in the negative pole currect collecting plate in the battery case and with the cathode welding of the winding pole piece,
Set on the negative terminal of the battery case axial direction first end, and
Set on the positive terminal of the battery case axial direction second end；
The anode collection plate drains column, the positive terminal towards one anode of that side of positive terminal fixed setting
Through-hole compatible with the anode drainage column is offered on son, the anode drainage column is inserted into the through-hole and passes through
To it is described anode drainage column periphery wall and the through hole wall between annular gap region make soldering and make it is described just
Pole drains column and the positive terminal sealing welding；
The negative pole currect collecting plate is fixedly installed a cathode towards that side of the negative terminal and drains column, the negative pole end
Through-hole compatible with cathode drainage column is offered on son, the cathode drainage column is inserted into the described logical of the negative terminal
The Kong Zhong and annular gap region by being drained between column periphery wall and the negative terminal through hole wall to the cathode is made
Soldering and make cathode drainage column and the negative terminal sealing welding；
The positive terminal and the battery case are separate structure.
The negative terminal and the battery case are separate structure.
The negative terminal is structure as a whole with the battery case.
The advantages of the application, is:
1, compared with existing battery, the electrode current collecting modular construction of the application is compact, easy to make, has taken into account current-carrying capability
And welding performance, so that the internal resistance of battery reduces, power-performance is increased substantially, so as to avoid battery temperature in use process
Height is spent, improves the homogeneity of battery pack temperature field, promotes the Performance And Reliability of battery pack, prolong the service life.Meanwhile making
The cooling problem of large-sized battery pack is easy to solve, and reduces the complexity and manufacturing cost of design.
2, spliced eye is opened up on electrode terminal, is welded at the girth joint of drainage column and electrode terminal, facilitates reality
Leakproofness easy to operate, and can guarantee junction is applied, battery leakage is prevented.
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 structural schematic diagram of conventional cylindrical cells；
Fig. 2 is the decomposition texture schematic diagram of cylindrical battery in the embodiment of the present application；
Fig. 3 is the decomposition texture schematic diagram of cylindrical battery anode collection component in the embodiment of the present application；
Fig. 4 is one of the assembling structure schematic diagram of cylindrical battery anode collection component in the embodiment of the present application；
Fig. 5 is two of the assembling structure schematic diagram of cylindrical battery anode collection component in the embodiment of the present application；
Fig. 6 is the decomposition texture schematic diagram of cylindrical battery negative pole currect collecting component in the embodiment of the present application；
Fig. 7 is one of the assembling structure schematic diagram of cylindrical battery negative pole currect collecting component in the embodiment of the present application；
Fig. 8 is two of the assembling structure schematic diagram of cylindrical battery negative pole currect collecting component in the embodiment of the present application；
Wherein: in Fig. 1,1- battery, 2- positive terminal, 3- battery case, 4- safety valve, 5- insulator seal ring, 6- anode
Drainage strip, 7- anode collection plate, 8- negative pole currect collecting plate, 9- positive plate, 10- negative plate, 11- diaphragm.
In Fig. 2 into Fig. 8,1- battery case, 2- winds pole piece, 3- anode collection plate, and 301- anode collection plate first welds
Area, the second welding section of 302- anode collection plate, 4- negative pole currect collecting plate, the first welding section of 401- negative pole currect collecting plate, 402- cathode collection
The second welding section of flowing plate, 5- negative terminal, the through-hole on 501- negative terminal, 502- cathode drain the sealing of column and negative terminal
Welding surface, 6- positive terminal, the through-hole on 601- positive terminal, 602- anode drain the sealing welding junction of column and positive terminal,
7- anode drains column, and 8- cathode drains column.
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. 2 to Fig. 8 shows a specific embodiment of this cylindrical battery of the application, with conventional cylindrical cells phase
With, also include: cylindric battery case 1, the winding pole piece 2 being contained in battery case, be contained in battery case and with
The anode collection plate 3 for winding the anode welding of pole piece is contained in the cathode collection of the cathode welding in battery case and with winding pole piece
Flowing plate 4, the negative terminal 5 set on battery case axial direction bottom end, the positive terminal 6 set on battery case axial direction top.With Fig. 1 institute
The conventional batteries shown are identical, and winding pole piece 2 is formed by positive plate, negative plate and membrane winding.The electrolyte of battery is generally liquid
State is distributed in positive plate, negative plate and diaphragm and is accommodated by battery case, while close together with positive plate, negative plate and diaphragm
It is enclosed in battery case.Electrolyte is also possible to gelatinous, is combined together with diaphragm.
Referring to shown in Fig. 4 and Fig. 5, the key improvements of the present embodiment are: above-mentioned anode collection plate 3 is towards positive terminal 6
The cylindrical anode drainage column 7 of that side welding one, anode drainage 7 axis of column and the thickness of positive terminal 6 arranges in the same direction, just
Circular through-hole compatible with anode drainage column 7 is offered on extreme son 6, anode drainage column 7 is inserted into the through-hole and leads to
It crosses and soldering is made to the annular gap region between anode drainage 7 periphery wall of column and through hole wall and makes anode drainage column 7
With 6 sealing welding of positive terminal.And negative pole currect collecting component uses structure type identical with above-mentioned anode collection component, specifically
: negative pole currect collecting plate 4 drains column 8 towards the cylindrical cathode of that side of negative terminal 5 fixed setting one, on negative terminal 5
Circular through-hole compatible with cathode drainage column 8 is offered, cathode drainage column 8 is inserted into the through-hole of negative terminal 5 and leads to
Cross the annular gap region for cathode being drained between 8 periphery wall of column and through hole wall make soldering and make cathode drainage column 8 with
6 sealing welding of negative terminal.
When production, first anode drainage column 7 is inserted into the through-hole of positive terminal 5, then in the outside of positive terminal 5 (back
That side from anode drainage column) along progress laser welding in annular gap between anode drainage 7 periphery wall of column and through hole wall
It handles (or being stirred friction welding), aforementioned toroidal gap is lived that (electrolyte will not be from gap by sealing blocking after the completion of welding
Middle spilling), anode drainage column 7 is fixed together with positive terminal 6.The way of negative pole end is identical, and details are not described herein.
It is welded at the girth joint of drainage column and electrode terminal, facilitates implementation easy to operate, and the company of can guarantee
The leakproofness for meeting place, prevents battery leakage.
Above-mentioned anode collection plate 3, anode drainage column 7 and positive terminal 6 together form new structural anode collection group
Part.And negative pole currect collecting plate 4, cathode drainage column 8 and negative terminal 5 together form new structural negative pole currect collecting component.At this
In anode collection component and negative pole currect collecting component, anode collection plate 3 and negative pole currect collecting plate 4 are using the thinner thickness for being easy to weld
Sheet metal is made, and thickness is generally less than 2mm, more preferably little Yu 1mm.And anode drainage column 7 and the axial ruler of cathode drainage column 8
It is very little larger, to play the role of collection and transmission high current.
Above-mentioned anode collection plate 3, anode drainage column 7 and 6 outer profile of positive terminal are circle, and anode collection plate 3,
Anode drainage column 7 and positive terminal 6 are coaxially arranged.
Above-mentioned negative pole currect collecting plate 4, cathode drainage column 8 and 5 outer profile of negative terminal are circle, and negative pole currect collecting plate 4,
Cathode drains column 8 and negative terminal 5 is coaxially arranged.
Anode collection plate 3 includes the first welding section of anode collection plate 301 at its center and is located at anode collection plate
The second welding section of anode collection plate 302 of the circular ring shape of first welding section periphery, wherein the first welding section of anode collection plate 301 is used
In welding anode drainage column 7, the second welding section of anode collection plate 302 is for welding winding pole piece 2.
Negative pole currect collecting plate 4 includes the first welding section of negative pole currect collecting plate 401 at its center and is located at negative pole currect collecting plate
The second welding section of negative pole currect collecting plate 402 of the circular ring shape of first welding section periphery, wherein the first welding section of negative pole currect collecting plate 401 is used
Column 8 is drained in welding cathode, the second welding section of negative pole currect collecting plate 402 is for welding winding pole piece 2.
In order to reinforce the bonding strength and connective stability and negative pole currect collecting plate 4 of anode collection plate 3 and positive terminal 6
With the bonding strength and connective stability of negative terminal 5, match anode collection plate 3 with the through-hole interference on positive terminal 6
(and then welding) is closed, the through-hole on negative pole currect collecting plate 4 and negative terminal 5 is made also to be interference fitted (and then welding).
In the present embodiment, positive terminal 6 and battery case 1 are separate structure, and the two is welded and fixed.5 He of negative terminal
Battery case 1 is also separate structure, and the two is welded to connect.Being designed in this way is advantageous in that, first can complete cathode outside battery case 1
The connection (welding) of terminal 5, cathode drainage column 8 and negative pole currect collecting plate 4, then the negative terminal 5 to link together, cathode are drained
Column 8 and negative pole currect collecting plate 4 are filled to battery case 1, negative terminal 5 and battery case 1 are welded together, assembling process is simpler
It is single.
Being designed in this way is advantageous in that, can be first respectively completed outside battery case 1 assembly welding of anode collection component with
And the assembly welding of negative pole currect collecting component, then positive terminal 6 and battery case 1 are welded together respectively, negative terminal 5 and electricity
Pond shell 1 welds together, and assembling process is simpler.
Certainly, negative terminal and battery case can also be made of one formula structure by us --- and battery case is to have round-ended cylinder shape
Structure.
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 electrode current collecting component of cylindrical battery, the electrode terminal of collector plate and conductive material including conductive material,
It is characterized in that, that side of the collector plate towards the electrode terminal is fixedly installed the drainage column of a conductive material, institute
It states and offers through-hole compatible with the drainage column on electrode terminal, the drainage column is inserted into the through-hole and passes through
Soldering is made to the annular gap region between the drainage column periphery wall and the through hole wall and makes the drainage column
With the electrode terminal sealing welding.
2. the electrode current collecting component of cylindrical battery according to claim 1, which is characterized in that described to be welded as Laser Welding
It connects.
3. the electrode current collecting component of cylindrical battery according to claim 1, which is characterized in that it is described be welded as stirring rub
Wipe welding.
4. the electrode current collecting component of cylindrical battery according to claim 1, which is characterized in that the collector plate, described
It drains column and the electrode terminal is circular configuration, and the collector plate, the drainage column and the electrode terminal are coaxial
Arrangement.
5. the electrode current collecting component of cylindrical battery according to claim 1, which is characterized in that the drainage column with it is described
Collector plate is welded and fixed.
6. the electrode current collecting component of cylindrical battery according to claim 5, which is characterized in that the collector plate includes position
In first welding section at its center and the second welding section of the circular ring shape positioned at the first welding section periphery, first weldering
Area is met for welding the drainage column, second welding section is for welding winding pole piece.
7. a kind of cylindrical battery, comprising:
Cylindric battery case (1),
The winding pole piece (2) being contained in the battery case,
It is contained in the anode collection plate (3) in the battery case and with the anode welding of the winding pole piece,
It is contained in the negative pole currect collecting plate (4) in the battery case and with the cathode welding of the winding pole piece,
Set on the negative terminal (5) of the battery case axial direction first end, and
Set on the positive terminal (6) of the battery case axial direction second end；
It is characterized in that,
The anode collection plate (3) is described towards one anode drainage column (7) of that side of the positive terminal (6) fixed setting
The compatible through-hole with anode drainage column (7) is offered on positive terminal (6), the anode drains described in column (7) insertion
In through-hole and by being welded to the annular gap region between anode drainage column (7) periphery wall and the through hole wall
It connects processing and makes anode drainage column (7) and the positive terminal (6) sealing welding；
Cathode drainage column (8) is fixedly installed towards that side of the negative terminal (5) in the negative pole currect collecting plate (4), described
The compatible through-hole with cathode drainage column (8) is offered on negative terminal (5), the cathode drains described in column (8) insertion
In the through-hole of negative terminal (5) and by draining column (8) periphery wall and negative terminal through-hole hole to the cathode
Make soldering and make cathode drainage column (8) and the negative terminal (5) sealing welding in annular gap region between wall
It connects.
8. cylindrical battery according to claim 7, which is characterized in that the positive terminal (6) and the battery case (1)
For separate structure.
9. cylindrical battery according to claim 7, which is characterized in that the negative terminal (5) and the battery case (1)
For separate structure.
10. cylindrical battery according to claim 7, which is characterized in that the negative terminal (5) and the battery case
(1) it is structure as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820568950.8U CN208284546U (en) | 2018-04-20 | 2018-04-20 | Cylindrical battery and its electrode current collecting component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820568950.8U CN208284546U (en) | 2018-04-20 | 2018-04-20 | Cylindrical battery and its electrode current collecting component |
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| Publication Number | Publication Date |
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| CN208284546U true CN208284546U (en) | 2018-12-25 |
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| CN201820568950.8U Active CN208284546U (en) | 2018-04-20 | 2018-04-20 | Cylindrical battery and its electrode current collecting component |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113764677A (en) * | 2021-08-18 | 2021-12-07 | 刘振 | Current collecting structure of battery and battery |
| CN113871765A (en) * | 2021-09-26 | 2021-12-31 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
| WO2022241615A1 (en) * | 2021-05-17 | 2022-11-24 | 微宏动力系统（湖州）有限公司 | Positive electrode current collector disc and cylindrical battery |
| WO2024031841A1 (en) * | 2022-08-11 | 2024-02-15 | 湖北亿纬动力有限公司 | Current collector disc and battery |
-
2018
- 2018-04-20 CN CN201820568950.8U patent/CN208284546U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022241615A1 (en) * | 2021-05-17 | 2022-11-24 | 微宏动力系统（湖州）有限公司 | Positive electrode current collector disc and cylindrical battery |
| CN113764677A (en) * | 2021-08-18 | 2021-12-07 | 刘振 | Current collecting structure of battery and battery |
| CN113871765A (en) * | 2021-09-26 | 2021-12-31 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
| CN113871765B (en) * | 2021-09-26 | 2024-02-23 | 贵阳比耐新能源科技有限公司 | Cylindrical battery and manufacturing method thereof |
| WO2024031841A1 (en) * | 2022-08-11 | 2024-02-15 | 湖北亿纬动力有限公司 | Current collector disc and battery |
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Effective date of registration: 20230802 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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