CN113437447B - Lithium ion battery with bending tab and tab protection accessory - Google Patents
Lithium ion battery with bending tab and tab protection accessory Download PDFInfo
- Publication number
- CN113437447B CN113437447B CN202110607820.7A CN202110607820A CN113437447B CN 113437447 B CN113437447 B CN 113437447B CN 202110607820 A CN202110607820 A CN 202110607820A CN 113437447 B CN113437447 B CN 113437447B
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- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- tab
- bending
- electrode tab
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a lithium ion battery with bending tabs and tab protection accessories, which comprises a plurality of lithium ion battery pieces arranged side by side, wherein the lithium ion battery pieces are in a flat rectangular plate shape, one end of each lithium ion battery piece is provided with a positive electrode tab and a negative electrode tab, each positive electrode tab and each negative electrode tab comprise a vertical section connected with the lithium ion battery piece, the vertical sections are parallel to a flat surface where the lithium ion battery is located, the top of each vertical section is provided with a bending section perpendicular to the vertical section, and the bending sections of the positive electrode tabs and the bending sections of the negative electrode tabs face to two sides of the flat surface of the lithium ion battery piece respectively. The lug is convenient to connect, the flat tooth joint is provided with a welded joint surface, and the welding is stable.
Description
Technical Field
The invention relates to a lithium ion battery with bent tabs and tab protection accessories, and belongs to the technical field of lithium ion batteries.
Background
Lithium ion batteries are favored in the market because of their light weight, large capacitance, rapid charging, and increased charge and discharge times, i.e., extended service life, enhanced use loss. The soft rib of lithium ion battery lies in the assembly process, and the utmost point ear is little, needs to weld one by one, and common practice is put a metal sheet on the utmost point ear, and the hole is gone up to the metal sheet, and the utmost point ear extends to on the metal sheet from the perforation in proper order, welds adjacent utmost point ear on the metal sheet, in welding process, needs to introduce the metal sheet or the metal strip of connection utmost point ear, leads to welding engineering volume big, and work is loaded down with trivial details, and the quality is difficult to guarantee.
Disclosure of Invention
In order to solve the technical problems, the invention provides a lithium ion battery with bent tabs and tab protection accessories, which has the following specific technical scheme:
the utility model provides a lithium ion battery with tab and tab protection accessory of buckling, includes the lithium ion battery piece that a plurality of put side by side, the flat rectangle platy is become to the lithium ion battery piece, the one end of lithium ion battery piece is provided with anodal tab and negative pole tab, anodal tab and negative pole tab all include the vertical section of being connected with the lithium ion battery piece, vertical section is on a parallel with the flat plane that lithium ion battery is located, and the top of vertical section is provided with rather than vertically bending section, the bending section of anodal tab and the both sides of the flat plane of negative pole tab are oriented respectively to the bending section of anodal tab.
Further, the tail ends of the bending sections are arranged in a flat tooth shape to form a flat tooth joint.
Further, the positive electrode tab and the negative electrode tab of each lithium ion battery piece are sequentially connected, so that the capacity of the battery is increased; each positive electrode tab is connected with the positive electrode tab in sequence, and the negative electrode tab is connected with the negative electrode tab, so that the battery is pressurized; when the lithium ion battery pack is used, the lithium ion battery packs with corresponding numbers are connected in series and parallel according to the output voltage and the expected capacitance of the battery; the bending sections of the positive electrode lugs or the negative electrode lugs between the adjacent lithium ion battery pieces after being connected in series and parallel are in butt joint, and are fixedly connected through electric welding, and rectangular channels are formed between the vertical sections of the adjacent lithium ion battery pieces.
Further, the lithium ion battery cell structure further comprises a tab cover, the tab cover comprises an inserting rod inserted into a rectangular channel formed between the positive electrode tab and the negative electrode tab, the inserting rod is in a rectangular shape, after the inserting rod is inserted into the rectangular channel, the bottom of the inserting rod is lapped on the top of an adjacent lithium ion battery cell, a clamping groove is formed in one face of the bending section, the clamping groove extends along the splicing direction of the tabs of the lithium ion battery cell, and a clamping groove rod is arranged in the clamping groove.
Further, one end of the inserted link is provided with a flange for connecting all the inserted links, and the flange is higher than the height of the inserted link and partially resists the bending section.
Further, the top of flange is provided with rather than vertically roof, the roof is located the bending section top, with the bending section parallel.
Furthermore, a clamping groove is also formed in one side, close to the flange, of the inserted link, and the clamping groove is parallel to the flange.
Further, the vertical sections are positioned in the middle of the respective bending sections, and both ends of the bending sections are provided with flat teeth.
The working principle of the invention is as follows:
when the lithium ion battery pieces are connected in series, the positive electrode lugs and the negative electrode lugs of the adjacent lithium ion battery pieces are connected, after all the lithium ion battery pieces are arranged, one lithium ion battery piece is turned over 180 degrees at each interval, so that the positive electrode lugs and the negative electrode lugs on the same side of all the lithium ion battery pieces can be adjacent to each other for matching welding.
When the lithium ion battery pieces are connected in parallel, the lithium ion battery pieces are sequentially discharged, and homopolar lugs are sequentially spliced.
The beneficial effects of the invention are as follows:
the lug is convenient to connect, the flat tooth joint is provided with a welded joint surface, and the welding is stable.
According to the invention, the tab can be effectively protected through the tab cover, and the tab is prevented from deforming in the use process.
Drawings
Figure 1 is a schematic view of a lithium ion battery sheet of the present invention,
figure 2 is a parallel state diagram of lithium ion battery cells of the present invention,
figure 3 is an enlarged view of the tab of example 1 of the present invention,
figure 4 is an enlarged view of the tab of example 2 of the present invention,
figure 5 is a schematic view of the structure of the socket of embodiment 4 of the present invention,
figure 6 is a schematic view of the structure of the socket of the embodiment 5 of the present invention,
figure 7 is a schematic view of the structure of the socket of embodiment 6 of the present invention,
figure 8 is a schematic view of the structure of the socket of embodiment 7 of the present invention,
in the figure: 1-lithium ion battery piece, 2-positive electrode tab, 3-negative electrode tab, 4-flat tooth joint, 5-inserted bar, 6-clamping groove, 7-flange, 8-clamping groove bar and 9-top plate.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
Example 1
As shown in fig. 1, the lithium ion battery with the bending tabs and the tab protection accessories comprises a plurality of lithium ion battery pieces 1 which are placed side by side, wherein the lithium ion battery pieces 1 are in a flat rectangular plate shape, one end of each lithium ion battery piece 1 is provided with a positive electrode tab 2 and a negative electrode tab 3, each positive electrode tab 2 and each negative electrode tab 3 comprises a vertical section connected with the lithium ion battery piece 1, the vertical sections are parallel to the flat surface where the lithium ion battery is located, the top of each vertical section is provided with a bending section perpendicular to the flat surface, and the bending sections of the positive electrode tabs 2 and the bending sections of the negative electrode tabs 3 face to two sides of the flat surface of the lithium ion battery piece 1 respectively.
Referring to fig. 2, the ends of the bent sections are arranged in a flat tooth form, forming a flat tooth joint 4.
Referring to fig. 3, the positive electrode tab 2 and the negative electrode tab 3 of each lithium ion battery piece 1 are sequentially connected to realize battery capacity increase; each positive electrode lug 2 is sequentially connected with the positive electrode lug 2, and the negative electrode lug 3 is connected with the negative electrode lug 3, so that the supercharging of the battery is realized; when in use, the lithium ion battery pieces 1 with corresponding numbers are connected in series and parallel according to the output voltage and the expected capacitance of the battery; the bending sections of the positive electrode lugs 2 or the negative electrode lugs 3 between the adjacent lithium ion battery pieces 1 after being connected in series and parallel are butted, and are fixedly connected through electric welding, and rectangular channels are formed between the vertical sections of the adjacent lithium ion battery pieces 1.
Example 2
Referring to fig. 4, on the basis of embodiment 1, the vertical sections are located in the middle of the respective bending sections, and both ends of the bending sections are provided in a flat tooth shape.
The embodiment is more convenient when using, does not divide front and back, and during the welding, the welding seam is located the interval centre of the vertical section of utmost point ear.
Example 3
The tab cover is added on the basis of embodiment 1, the tab cover comprises an inserting rod 5 inserted into a rectangular channel formed between the positive electrode tab 3 and the negative electrode tab 3, the inserting rod 5 is in a rectangular body shape, after the inserting rod 5 is inserted into the rectangular channel, the bottom of the inserting rod 5 is lapped on the top of the adjacent lithium ion battery piece 1, a clamping groove 6 is formed in one face of the bending section, the clamping groove 6 extends along the tab splicing direction of the lithium ion battery piece 1, and a clamping groove rod 8 is arranged in the clamping groove 6. The clamping groove rod 8 can effectively prevent the tab cover from falling off.
Example 4
Referring to fig. 5, on the basis of embodiment 3, one end of the insert pin 5 is provided with a flange 7 connecting all insert pins 5, and the flange 7 is higher than the insert pin 5 in height and partially resists against the bending section.
The flange 7 can connect all the inserted bars 5 into a whole, thereby achieving the effect of convenient insertion.
Example 5
Referring to fig. 6, on the basis of embodiment 4, a top plate 9 perpendicular to the flange 7 is provided on top of the flange, and the top plate 9 is located above the bending section and parallel to the bending section.
The top plate 9 is blocked above the lugs, and the lugs are surrounded, so that a protection effect is achieved.
Example 6
Referring to fig. 7, in the embodiment 4 or 5, a locking groove 6 is also provided on the side of the plunger 5 near the flange 7, and the locking groove 6 is parallel to the flange 7.
The clamping groove 6 is internally provided with the clamping groove rod 8, and the periphery of the clamping groove rod 8 is coated with an epoxy resin layer, so that the anti-seismic buffering effect is achieved.
Example 7
Referring to fig. 8, based on embodiment 3, both ends of the surface of the insert rod 5 facing the bending section are provided with clamping grooves 6, clamping groove rods 8 are provided in the clamping grooves 6, and the clamping grooves 6 are located at both sides of the bending section and parallel to the extending direction of the bending section.
The clamping groove rods 8 are respectively arranged on the two sides, so that the inserting rod 5 is fixed between the pole lugs, and the inserting rod 5 is prevented from moving left and right.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (1)
1. A lithium ion battery with bending electrode lugs and electrode lug protection accessories is characterized in that: the lithium ion battery comprises a plurality of lithium ion battery pieces which are arranged side by side, wherein the lithium ion battery pieces are in a flat rectangular plate shape, one end of each lithium ion battery piece is provided with a positive electrode tab and a negative electrode tab, each positive electrode tab and each negative electrode tab comprise a vertical section connected with the lithium ion battery piece, the vertical sections are parallel to the flat surface where the lithium ion battery is located, the tops of the vertical sections are provided with bending sections perpendicular to the vertical sections, and the bending sections of the positive electrode tabs and the bending sections of the negative electrode tabs face to two sides of the flat surface of the lithium ion battery piece respectively;
the lithium ion battery cell structure comprises a positive electrode tab and a negative electrode tab, and is characterized by further comprising a tab cover, wherein the tab cover comprises an inserted bar inserted into a rectangular channel formed between the positive electrode tab and the negative electrode tab, the inserted bar is in a rectangular shape, after the inserted bar is inserted into the rectangular channel, the bottom of the inserted bar is lapped on the top of an adjacent lithium ion battery cell, a clamping groove is formed in one surface facing to a bending section, the clamping groove extends along the tab splicing direction of the lithium ion battery cell, and a clamping groove bar is arranged in the clamping groove;
one end of the inserted link is provided with a blocking edge for connecting all the inserted links, the blocking edge is higher than the height of the inserted link, and part of the blocking edge is blocked at the bending section;
a clamping groove is also formed in one side, close to the flange, of the inserted link, and the clamping groove is parallel to the flange;
clamping grooves are formed in the two ends of the surface, facing the bending section, of the inserted link, clamping groove rods are arranged in the clamping grooves, and the clamping grooves are located on the two sides of the bending section and parallel to the extending direction of the bending section;
the tail ends of the bending sections are arranged in a flat tooth shape to form a flat tooth joint;
sequentially connecting the positive electrode lugs and the negative electrode lugs of each lithium ion battery piece to realize battery capacity increase; each positive electrode tab is connected with the positive electrode tab in sequence, and the negative electrode tab is connected with the negative electrode tab, so that the battery is pressurized; when the lithium ion battery pack is used, the lithium ion battery packs with corresponding numbers are connected in series and parallel according to the output voltage and the expected capacitance of the battery; the bending sections of the positive electrode lugs or the negative electrode lugs between adjacent lithium ion battery pieces after being connected in series and parallel are butted, and are fixedly connected through electric welding, and rectangular channels are formed between the vertical sections of the adjacent lithium ion battery pieces;
the top of the flange is provided with a top plate perpendicular to the flange, and the top plate is positioned above the bending section and parallel to the bending section;
the vertical section is located the centre of each bending section, and the both ends of bending section all set up to be flat tooth form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607820.7A CN113437447B (en) | 2021-06-01 | 2021-06-01 | Lithium ion battery with bending tab and tab protection accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110607820.7A CN113437447B (en) | 2021-06-01 | 2021-06-01 | Lithium ion battery with bending tab and tab protection accessory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113437447A CN113437447A (en) | 2021-09-24 |
| CN113437447B true CN113437447B (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110607820.7A Active CN113437447B (en) | 2021-06-01 | 2021-06-01 | Lithium ion battery with bending tab and tab protection accessory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113437447B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101877413A (en) * | 2009-04-30 | 2010-11-03 | 比亚迪股份有限公司 | Monomer battery and power battery pack containing same |
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| JP2012221804A (en) * | 2011-04-11 | 2012-11-12 | Hitachi Maxell Energy Ltd | Battery pack |
| CN203377303U (en) * | 2013-07-08 | 2014-01-01 | 中航锂电（洛阳）有限公司 | Connecting piece for pole lug and pole post of lithium battery and lithium battery using same |
| CN203690565U (en) * | 2014-02-11 | 2014-07-02 | 无锡市万佳联电子线缆厂 | Battery connecting line |
| WO2016020999A1 (en) * | 2014-08-06 | 2016-02-11 | 日産自動車株式会社 | Battery pack and tab-joining method |
| CN207440138U (en) * | 2017-10-25 | 2018-06-01 | 合肥国轩高科动力能源有限公司 | A kind of lithium ion battery test automation fixture |
| CN207542288U (en) * | 2017-11-03 | 2018-06-26 | 安徽力普拉斯电源技术有限公司 | A kind of electro-tricycle battery terminal protective device |
| CN207800749U (en) * | 2018-02-09 | 2018-08-31 | 中科派思储能技术有限公司 | A kind of protective case for lithium-sulfur cell lug |
| CN208622845U (en) * | 2018-08-27 | 2019-03-19 | 江西超维新能源科技股份有限公司 | A kind of high-performance stack type lithium ion battery |
| CN210628349U (en) * | 2019-07-04 | 2020-05-26 | 合肥国轩高科动力能源有限公司 | Scalable lithium ion battery utmost point ear protective sheath that can regulate and control |
-
2021
- 2021-06-01 CN CN202110607820.7A patent/CN113437447B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877413A (en) * | 2009-04-30 | 2010-11-03 | 比亚迪股份有限公司 | Monomer battery and power battery pack containing same |
| JP2012221804A (en) * | 2011-04-11 | 2012-11-12 | Hitachi Maxell Energy Ltd | Battery pack |
| CN102332611A (en) * | 2011-09-23 | 2012-01-25 | 深圳市格瑞普电池有限公司 | Lithium ion battery pack and soldering method for single batteries therein |
| CN203377303U (en) * | 2013-07-08 | 2014-01-01 | 中航锂电（洛阳）有限公司 | Connecting piece for pole lug and pole post of lithium battery and lithium battery using same |
| CN203690565U (en) * | 2014-02-11 | 2014-07-02 | 无锡市万佳联电子线缆厂 | Battery connecting line |
| WO2016020999A1 (en) * | 2014-08-06 | 2016-02-11 | 日産自動車株式会社 | Battery pack and tab-joining method |
| CN207440138U (en) * | 2017-10-25 | 2018-06-01 | 合肥国轩高科动力能源有限公司 | A kind of lithium ion battery test automation fixture |
| CN207542288U (en) * | 2017-11-03 | 2018-06-26 | 安徽力普拉斯电源技术有限公司 | A kind of electro-tricycle battery terminal protective device |
| CN207800749U (en) * | 2018-02-09 | 2018-08-31 | 中科派思储能技术有限公司 | A kind of protective case for lithium-sulfur cell lug |
| CN208622845U (en) * | 2018-08-27 | 2019-03-19 | 江西超维新能源科技股份有限公司 | A kind of high-performance stack type lithium ion battery |
| CN210628349U (en) * | 2019-07-04 | 2020-05-26 | 合肥国轩高科动力能源有限公司 | Scalable lithium ion battery utmost point ear protective sheath that can regulate and control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113437447A (en) | 2021-09-24 |
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