CN114284647A - Connecting structure of lithium battery non-isopolar lug and polar column - Google Patents
Connecting structure of lithium battery non-isopolar lug and polar column Download PDFInfo
- Publication number
- CN114284647A CN114284647A CN202111554920.4A CN202111554920A CN114284647A CN 114284647 A CN114284647 A CN 114284647A CN 202111554920 A CN202111554920 A CN 202111554920A CN 114284647 A CN114284647 A CN 114284647A
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- welding
- utmost point
- pole
- lug
- point ear
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 113
- 238000004804 winding Methods 0.000 claims abstract description 44
- 238000007493 shaping process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 238000012163 sequencing technique Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 4
- 210000000959 ear middle Anatomy 0.000 claims description 3
- 150000002641 lithium Chemical class 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a connecting structure of a lithium battery non-isopolar lug and a polar column, which comprises: the winding device comprises a first winding core and a second winding core, wherein a plurality of tabs are arranged on the first winding core and the second winding core respectively, and the areas of the tabs are arranged in a stacking manner along the gradient change; the lithium battery also comprises a pole which is used as an electrode of the lithium battery; a plurality of utmost point ear passes through laser welding lug beading on utmost point post, the laser welding mode includes parallel utmost point ear welding and perpendicular utmost point ear welding. For the non-isopolar lugs, because the lugs have gradients, poor welding is easily caused by directly welding the lugs and the poles by laser.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a connecting structure of an unequal pole lug and a pole column of a lithium battery, and particularly relates to a structure for directly connecting the unequal pole lug and the pole column.
Background
At present, a tab and a pole in a lithium battery are connected through an adapter plate, wherein the tab and the adapter plate are partially welded through ultrasonic waves, and the adapter plate and the pole are partially welded together through laser. Such a welded structure has several problems:
1. the presence of the interposer increases the manufacturing cost of the battery and reduces the energy density of the battery.
2. The ultrasonic welding of the tab is easy to cause the tab to break, and the service life of the ultrasonic welding joint is limited.
3. In order to prevent that the direct diaphragm that strikes of electrolyte in annotating the liquid mouth can place the saddle under annotating the liquid mouth, and the existence of saddle is easily directly spouted electrolyte on the switching piece to the influence annotates liquid efficiency.
4. Two welding structures related to the adapter sheet easily cause uneven heat generation of the battery cell, and the internal resistance of the battery cell is easily increased due to complex process.
The electrode lugs are divided into equal electrode lugs and unequal electrode lugs according to size difference, the equal electrode lugs are the same in size, and the unequal electrode lugs are the electrode lugs with different sizes. The unequal pole ears have a height gradient from small to large due to different sizes of the pole ears.
Chinese patent publication No. CN205335338U proposes a result without an interposer, but this structure only adopts a laser welding method and is only suitable for a battery cell with an isopolar lug structure, and thus cannot satisfy the application of an anisopolar lug. For the non-isopolar lugs, the laser welding mode in the document cannot carry out welding, because the heights of the lugs are different, namely the thicknesses of the lugs are different, the non-isopolar lugs are welded according to a comparison scheme, and because the thicknesses of the lugs are different, the thickness of the lowest lug is thin, the lowest lug can be welded through, and therefore the scheme in the document is not suitable for the welding mode of the non-isopolar lugs.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a connection structure of a lithium battery unequal pole lug and a pole column.
According to the invention, the connecting structure of the lithium battery non-isopolar lug and the polar column comprises: the winding device comprises a first winding core and a second winding core, wherein a plurality of tabs are arranged on the first winding core and the second winding core respectively, and the areas of the tabs are arranged in a stacking manner along the gradient change; the lithium battery also comprises a pole which is used as an electrode of the lithium battery;
a plurality of utmost point ear passes through laser welding lug beading on utmost point post, the laser welding mode includes parallel utmost point ear welding and perpendicular utmost point ear welding.
Preferably, the tab is shaped before welding, and the shaping treatment mode comprises ultrasonic welding shaping and air blowing shaping.
Preferably, the parallel tab welding mode specifically includes: with first book core utmost point ear and second book core utmost point ear just to setting up on utmost point post, utmost point ear is according to area sequencing and piles up the setting between two parties, rolls up the core minimum utmost point ear middle part orientation welding towards the second along the minimum utmost point ear of first book core.
Preferably, in the parallel tab welding, the welding length is less than or equal to the sum of the lengths of the first winding core and the second winding core, and the welding width is less than or equal to the minimum tab width.
Preferably, the parallel welding comprises one-time welding or multiple-time welding.
Preferably, in the multiple welding, two adjacent welding areas are arranged in an alignment or a staggered manner.
Preferably, the vertical welding mode specifically includes: with first book core utmost point ear and the right setting of second book core utmost point ear on utmost point post, utmost point ear is according to area sequencing and piles up the setting between two parties, and the welding position is the seam region of first book core utmost point ear and second book core utmost point ear.
Preferably, in the vertical welding, the welding length is less than or equal to the edge of the pole parallel to the seam of the first winding core pole lug and the second winding core pole lug, and the welding width is greater than or equal to the interval of the seam area of the first winding core pole lug and the second winding core pole lug.
Preferably, the vertical welding comprises one-time welding or multiple-time welding.
Preferably, in the multiple welding, two adjacent welding areas are arranged at intervals or in an overlapping mode.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with the existing welding mode, the welding structure provided by the invention has the advantages that the energy density of the battery cell is improved by adopting the structure without the adapter plate, and the manufacturing cost of the battery cell is reduced.
2. For the non-isopolar lugs, because the lugs have gradients, poor welding is easily caused by directly welding the lugs and the poles by laser.
3. The invention adopts the direct welding of the pole ear and the pole column without a switching piece structure, improves the heat conduction speed of the pole ear and is beneficial to the heat dissipation of the battery cell.
4. The invention adopts a parallel or vertical tab welding mode, and has no step during welding, thereby improving the welding efficiency.
5. The invention adopts the integrated welding mode of two lugs (simultaneously welding two lugs), and improves the production efficiency compared with the traditional four-pass welding;
6. the invention applies laser welding to the non-isopolar lugs for the first time, improves the production efficiency and reduces the manufacturing cost.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram illustrating a one-time welding effect of a parallel welding method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the effect of two-time welding in a parallel welding manner according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a one-time welding effect of a vertical welding manner according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the effect of two times of vertical welding in the embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention introduces a connecting structure of a lithium battery non-isopolar lug and a polar column, which comprises: the winding device comprises a first winding core and a second winding core, wherein a plurality of tabs are arranged on the first winding core and the second winding core respectively, and the areas of the tabs are arranged in a stacking manner along the gradient change; the lithium battery also comprises a pole which is used as an electrode of the lithium battery;
a plurality of utmost point ear passes through laser welding lug beading on utmost point post, the laser welding mode includes parallel utmost point ear welding and perpendicular utmost point ear welding.
Preferably, the tab is shaped before welding, and the shaping treatment mode comprises ultrasonic welding shaping and air blowing shaping. Ultrasonic shaping, namely welding the lugs together by ultrasonic waves to ensure that the lugs are not loosened; and the air blowing shaping is that when welding, the tab is blown by gas to be bound so as not to be loose.
Referring to fig. 1, the parallel tab welding method specifically includes: the first core winding lug and the second core winding lug are arranged on the pole column just right, the positive pole lug of the first core winding and the positive pole lug of the second core winding are arranged on the positive pole column in a relatively close mode, and the negative pole lug of the first core winding and the negative pole lug of the second core winding are arranged on the negative pole column in a relatively close mode. Utmost point ear is according to area sequencing and piles up the setting in the middle of being, rolls up the minimum utmost point ear middle part orientation welding of core towards the second along the minimum utmost point ear of first book core. In parallel tab welding, the welding length is less than or equal to the sum of the lengths of the first winding core and the second winding core, and the welding width is less than or equal to the minimum tab width.
The parallel welding comprises one-time welding or multiple-time welding. In the multiple welding, two adjacent welding areas are arranged in an alignment or a staggered manner. Fig. 2 is a schematic diagram of the effect.
Referring to fig. 3, the vertical welding method specifically includes: with first book core utmost point ear and second roll core utmost point ear just to setting up on utmost point post, utmost point ear is according to the area sequencing and piles up the setting between two parties, and the utmost point ear that the area is the biggest is close to utmost point post setting, and the seam region that welding position is first book core utmost point ear and second roll core utmost point ear. In the vertical welding, the welding length is less than or equal to the edge of the pole which is parallel to the joint of the first winding core pole lug and the second winding core pole lug, and the welding width is more than or equal to the distance between the joint areas of the first winding core pole lug and the second winding core pole lug.
The vertical welding comprises one-time welding or multiple-time welding. In the multiple welding, two adjacent welding areas are arranged at intervals or in an overlapping mode. Fig. 4 is a schematic diagram of the effect of the vertical welding mode.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a connection structure of lithium cell unequal utmost point ear and utmost point post which characterized in that includes: the winding device comprises a first winding core and a second winding core, wherein a plurality of tabs are arranged on the first winding core and the second winding core respectively, and the areas of the tabs are arranged in a stacking manner along the gradient change; the lithium battery also comprises a pole which is used as an electrode of the lithium battery;
a plurality of utmost point ear passes through laser welding lug beading on utmost point post, the laser welding mode includes parallel utmost point ear welding and perpendicular utmost point ear welding.
2. The result of the connection of a lithium battery tab to a post as set forth in claim 1, wherein: and shaping the electrode lug before welding, wherein the shaping treatment mode comprises ultrasonic welding shaping and wind blowing shaping.
3. The connecting structure of the unequal pole lug and the pole column of the lithium battery as claimed in claim 1, wherein: the parallel tab welding mode specifically comprises: with first book core utmost point ear and second book core utmost point ear just to setting up on utmost point post, utmost point ear is according to area sequencing and piles up the setting between two parties, rolls up the core minimum utmost point ear middle part orientation welding towards the second along the minimum utmost point ear of first book core.
4. The connecting structure of the unequal pole lug and the pole column of the lithium battery as claimed in claim 3, wherein: in the parallel tab welding process, the welding length is less than or equal to the sum of the lengths of the first winding core and the second winding core, and the welding width is less than or equal to the minimum tab width.
5. The connecting structure of the unequal pole lug and the pole column of the lithium battery as claimed in claim 3, wherein: the parallel welding comprises one-time welding or multiple-time welding.
6. The lithium battery non-isopolar lug and pole post connection structure according to claim 5, wherein: in the multiple welding, two adjacent welding areas are arranged in an aligned or staggered mode.
7. The connecting structure of the unequal pole lug and the pole column of the lithium battery as claimed in claim 1, wherein: the vertical welding mode specifically comprises the following steps: with first book core utmost point ear and second book core utmost point ear just to setting up on utmost point post, the utmost point ear is according to area sequencing and piles up the setting between two parties, and the welding position is the seam and the region of setting for around the seam of first book core utmost point ear and second book core utmost point ear.
8. The lithium battery non-isopolar lug to pole connection structure of claim 7 wherein: in the vertical welding, the welding length is less than or equal to the edge of the pole which is parallel to the seam of the first winding core pole lug and the second winding core pole lug, and the welding width is more than or equal to the interval of the seam area of the first winding core pole lug and the second winding core pole lug.
9. The lithium battery non-isopolar lug to pole connection structure of claim 7 wherein: the vertical welding comprises one-time welding or multiple-time welding.
10. The connecting structure of the unequal pole lug and the pole column of the lithium battery as claimed in claim 9, wherein: in the multiple welding, two adjacent welding areas are arranged at intervals or in an overlapping mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554920.4A CN114284647B (en) | 2021-12-17 | 2021-12-17 | Connection structure of unequal tab and pole of lithium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554920.4A CN114284647B (en) | 2021-12-17 | 2021-12-17 | Connection structure of unequal tab and pole of lithium battery |
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| CN114284647A true CN114284647A (en) | 2022-04-05 |
| CN114284647B CN114284647B (en) | 2023-12-05 |
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Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011077105A (en) * | 2009-09-29 | 2011-04-14 | Nippon Chemicon Corp | Electric double-layer capacitor and method of manufacturing the same |
| JP2014022273A (en) * | 2012-07-20 | 2014-02-03 | Sanyo Electric Co Ltd | Laminate outer packaging battery and battery pack |
| CN103996879A (en) * | 2014-04-29 | 2014-08-20 | 双登集团股份有限公司 | Winding battery plate group and preparation method thereof |
| JP2015176701A (en) * | 2014-03-14 | 2015-10-05 | 株式会社豊田自動織機 | Power storage device and method for manufacturing power storage device |
| JP2016029627A (en) * | 2014-07-25 | 2016-03-03 | 株式会社豊田自動織機 | Power storage device and manufacturing method thereof |
| WO2016080177A1 (en) * | 2014-11-20 | 2016-05-26 | 日立オートモティブシステムズ株式会社 | Prismatic secondary battery |
| CN205335338U (en) * | 2015-12-31 | 2016-06-22 | 骆驼集团新能源电池有限公司 | Power lithium cell electricity core and header connection structure |
| CN106257710A (en) * | 2015-06-17 | 2016-12-28 | 深圳市沃特玛电池有限公司 | A kind of multi pole ears becomes the high multiplying power lithium ion battery of size |
| CN206432322U (en) * | 2017-02-09 | 2017-08-22 | 宁德时代新能源科技股份有限公司 | Battery core pole piece and the naked battery core of takeup type |
| JP2018107030A (en) * | 2016-12-27 | 2018-07-05 | 株式会社豊田自動織機 | Power storage device and manufacturing method of power storage device |
| JP2018200841A (en) * | 2017-05-29 | 2018-12-20 | 株式会社豊田自動織機 | Manufacturing method of power storage device, and power storage device |
| CN110061182A (en) * | 2019-05-21 | 2019-07-26 | 宁德新能源科技有限公司 | Battery pole piece and battery core |
| CN110560879A (en) * | 2019-09-06 | 2019-12-13 | 中航锂电（洛阳）有限公司 | Battery core tab welding method and secondary battery |
| JP2020013752A (en) * | 2018-07-20 | 2020-01-23 | 株式会社豊田自動織機 | Power storage device |
| CN112259783A (en) * | 2020-11-20 | 2021-01-22 | 苏州凌威新能源科技有限公司 | Battery and battery preparation method |
| CN112421188A (en) * | 2020-10-30 | 2021-02-26 | 蜂巢能源科技有限公司 | Welding method of tab and cover plate, battery module, battery pack and vehicle |
| CN212783704U (en) * | 2020-07-23 | 2021-03-23 | 郑州比克新能源汽车有限公司 | Multi-tab structure of cylindrical battery |
| CN213905439U (en) * | 2020-12-21 | 2021-08-06 | 合肥国轩高科动力能源有限公司 | Square lithium ion battery roll core structure |
| CN213936468U (en) * | 2020-11-12 | 2021-08-10 | 厦门海辰新能源科技有限公司 | Pole piece, electric core and battery |
| CN113707972A (en) * | 2021-09-22 | 2021-11-26 | 合肥国轩高科动力能源有限公司 | CTP high-integration lithium ion battery and manufacturing method thereof |
-
2021
- 2021-12-17 CN CN202111554920.4A patent/CN114284647B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011077105A (en) * | 2009-09-29 | 2011-04-14 | Nippon Chemicon Corp | Electric double-layer capacitor and method of manufacturing the same |
| JP2014022273A (en) * | 2012-07-20 | 2014-02-03 | Sanyo Electric Co Ltd | Laminate outer packaging battery and battery pack |
| JP2015176701A (en) * | 2014-03-14 | 2015-10-05 | 株式会社豊田自動織機 | Power storage device and method for manufacturing power storage device |
| CN103996879A (en) * | 2014-04-29 | 2014-08-20 | 双登集团股份有限公司 | Winding battery plate group and preparation method thereof |
| JP2016029627A (en) * | 2014-07-25 | 2016-03-03 | 株式会社豊田自動織機 | Power storage device and manufacturing method thereof |
| WO2016080177A1 (en) * | 2014-11-20 | 2016-05-26 | 日立オートモティブシステムズ株式会社 | Prismatic secondary battery |
| CN106257710A (en) * | 2015-06-17 | 2016-12-28 | 深圳市沃特玛电池有限公司 | A kind of multi pole ears becomes the high multiplying power lithium ion battery of size |
| CN205335338U (en) * | 2015-12-31 | 2016-06-22 | 骆驼集团新能源电池有限公司 | Power lithium cell electricity core and header connection structure |
| JP2018107030A (en) * | 2016-12-27 | 2018-07-05 | 株式会社豊田自動織機 | Power storage device and manufacturing method of power storage device |
| CN206432322U (en) * | 2017-02-09 | 2017-08-22 | 宁德时代新能源科技股份有限公司 | Battery core pole piece and the naked battery core of takeup type |
| JP2018200841A (en) * | 2017-05-29 | 2018-12-20 | 株式会社豊田自動織機 | Manufacturing method of power storage device, and power storage device |
| JP2020013752A (en) * | 2018-07-20 | 2020-01-23 | 株式会社豊田自動織機 | Power storage device |
| CN110061182A (en) * | 2019-05-21 | 2019-07-26 | 宁德新能源科技有限公司 | Battery pole piece and battery core |
| CN110560879A (en) * | 2019-09-06 | 2019-12-13 | 中航锂电（洛阳）有限公司 | Battery core tab welding method and secondary battery |
| CN212783704U (en) * | 2020-07-23 | 2021-03-23 | 郑州比克新能源汽车有限公司 | Multi-tab structure of cylindrical battery |
| CN112421188A (en) * | 2020-10-30 | 2021-02-26 | 蜂巢能源科技有限公司 | Welding method of tab and cover plate, battery module, battery pack and vehicle |
| CN213936468U (en) * | 2020-11-12 | 2021-08-10 | 厦门海辰新能源科技有限公司 | Pole piece, electric core and battery |
| CN112259783A (en) * | 2020-11-20 | 2021-01-22 | 苏州凌威新能源科技有限公司 | Battery and battery preparation method |
| CN213905439U (en) * | 2020-12-21 | 2021-08-06 | 合肥国轩高科动力能源有限公司 | Square lithium ion battery roll core structure |
| CN113707972A (en) * | 2021-09-22 | 2021-11-26 | 合肥国轩高科动力能源有限公司 | CTP high-integration lithium ion battery and manufacturing method thereof |
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Address after: 201206 room b105, floor 1, building 4, No. 1255, Jinhai Road, pilot Free Trade Zone, Pudong New Area, Shanghai Applicant after: SHANGHAI RUIPU ENERGY Co.,Ltd. Applicant after: Ruipu Lanjun Energy Co.,Ltd. Address before: Room b105, 1st floor, building 4, 1255 Jinhai Road, Pudong New Area Free Trade Zone, Shanghai 200135 Applicant before: SHANGHAI RUIPU ENERGY Co.,Ltd. Applicant before: RUIPU ENERGY Co.,Ltd. |
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