CN212934806U - Full utmost point ear type cylinder lithium ion battery current collection dish structure - Google Patents
Full utmost point ear type cylinder lithium ion battery current collection dish structure Download PDFInfo
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- CN212934806U CN212934806U CN202022069549.XU CN202022069549U CN212934806U CN 212934806 U CN212934806 U CN 212934806U CN 202022069549 U CN202022069549 U CN 202022069549U CN 212934806 U CN212934806 U CN 212934806U
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- lithium ion
- ion battery
- current collecting
- full
- disk body
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 41
- 238000004049 embossing Methods 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 238000009713 electroplating Methods 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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 utility model discloses a full utmost point ear type cylinder lithium ion battery current collection dish structure, including disk body and one end and disk body connected's the afterbody, the V-arrangement breach has been seted up with the position of afterbody radial symmetry to the disk body, set up a plurality of through-holes that distribute along the footpath line along afterbody axial extension's footpath line position department on the disk body, be provided with the recess of two undercut C shapes or V-arrangement on the disk body, through-hole place footpath line symmetry is followed to two recesses, and the C shape or the V-arrangement mouth of two recesses are opposite, the lower terminal surface of two recess tank bottoms is the disk body and rolls up the welding faying face of core utmost point ear end. The utility model discloses simple structure easily connects, can effectively improve the effect of being connected of utmost point ear and apron of full utmost point ear type cylinder lithium ion battery, strengthens the water conservancy diversion effect of current collecting plate.
Description
Technical Field
The utility model relates to a lithium ion battery technical field specifically is a full utmost point ear type cylinder lithium ion battery current collector structure.
Background
The lithium ion battery has the advantages of high voltage, high specific energy, more recycling times, long storage time and the like, is widely applied to portable electronic equipment such as mobile phones, digital cameras and portable computers, and is also widely applied to large and medium-sized electric equipment such as electric automobiles, electric bicycles, electric tools and the like, so that the safety requirement on the lithium ion battery is higher and higher. Due to the influence of the national subsidy, the cylindrical aluminum shell lithium ion battery is concerned about due to the advantages of high energy density, good safety performance and the like.
The lithium ion battery current collecting disc is generally applied to the internal structural design of a large-capacity cylindrical lithium ion battery, for example, the diameter of the cylindrical lithium ion battery is 30mm or more, the current collecting disc is welded on the flattened subsequent end face, and the current collecting disc is used for conducting the current between the internal pole piece and the external pole of the battery.
Patent CN105810875A discloses a full-tab cylindrical battery current collecting tray, but the tray body has a high sealing performance, and is not conducive to the infiltration of electrolyte after being welded to the tab end face, thereby reducing the battery efficiency. Patent CN109088037A discloses a full-tab cylindrical battery current collecting disc, wherein a porous structure is added on the surface of the disc body to improve the electrolyte infiltration effect, but the current collecting disc with the design has the additional disc sleeve, which indirectly reduces the infiltration effect of the end face.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a full utmost point ear type cylinder lithium ion battery current collection dish structure can effectively improve full utmost point ear cylinder battery current collection dish under the condition that does not harm the water conservancy diversion effect, improves battery electrolyte's infiltration nature.
The technical scheme of the utility model is that:
the utility model provides a full utmost point ear type cylinder lithium ion battery current collection dish structure, is including disk body and one end and disk body an organic whole tail body of being connected, the disk body and the radial symmetrical position of tail body seted up the V-arrangement breach, the disk body on set up a plurality of through-holes that distribute along the footpath line along tail body axial extension's footpath line position department, the disk body on be provided with the recess of two undercut C shapes or V-arrangement, two recesses are symmetrical along through-hole place footpath line, and the C shape or the V-arrangement mouth of two recesses are opposite, the lower terminal surface of two recess tank bottoms is the disk body and rolls up the welding faying face of core utmost point ear end, the other end of tail body link to each other through welding or rivet and apron.
Two through holes distributed along the radial line are formed in the disc body at the radial line position extending along the axial direction of the tail body, one through hole is located in the center of the disc body, the other through hole is adjacent to the tail body, and the cross sectional areas of the two through holes account for 1/10-1/8 of the cross sectional area of the disc body.
The connection part of the disk body and the tail body forms two V-shaped corner clamping structures which are symmetrical along the axial direction of the tail body.
The included angle degree of the V-shaped notch is 45-150 degrees; the included angle degree of the V-shaped clip angle structure is 30-75 degrees.
The lower end surfaces of the bottoms of the two grooves are matt surfaces, and the matt surfaces are embossing surfaces, sand blasting surfaces, formation corrosion surfaces or electroplating matt plating surfaces.
The tray body on seted up two arc breachs, two arc breachs are along the radial line symmetry at through-hole place.
The lower end surfaces of the bottoms of the two grooves are welded with the plate body of the current collecting plate and the pole lugs together through laser welding.
The lower end surfaces of the bottoms of the two grooves are welded with the plate body of the current collecting plate and the lug together through pulse laser welding or continuous laser welding.
The welding lines of the laser welding are in a dotted line type or a continuous line type, and the line type is in a linear type, a wavy line type or a broken line type.
The welding line layout of the laser welding adopts a ring, single-row or double-row structure form.
The utility model discloses the material of current collecting disc is copper, aluminium, nickel, stainless steel or above-mentioned compound material, can effectively improve the water conservancy diversion effect of current collecting disc, improves the inside internal resistance of battery big, phenomenons such as generate heat.
The utility model has the advantages that:
(1) the through holes arranged on the tray body of the utility model are used for accelerating the infiltration of the electrolyte;
(2) the utility model discloses the junction of disk body and afterbody forms two V-arrangement clip angle structures along afterbody axial symmetry, and the disk body has seted up the V-arrangement breach with the radially symmetrical position of afterbody, has seted up two arc breachs on the disk body for the disk body of mass flow row is at the inner circle of roll core circumference, is used for improving the liquid injection effect, improves liquid injection efficiency;
(3) the utility model discloses the lower terminal surface of two recess tank bottoms is the matt surface, prevents that the high reverse effect of metal surface from causing rosin joint, overwelding.
Drawings
Fig. 1 is the utility model discloses embodiment 1 current collecting disc is connected with apron and book core respectively's structural schematic.
Fig. 2 is the utility model discloses embodiment 2 current collecting disc is connected with apron and book core respectively's structural schematic.
Fig. 3 is a partial structural schematic view of the current collecting plate in embodiments 1 and 2 of the present invention.
Fig. 4 is a schematic structural diagram of the connection between the collecting plate and the cover plate according to embodiment 3 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 and 3, a full-tab cylindrical lithium ion battery current collecting disc structure comprises a disc body 1 and a tail body 2, wherein one end of the tail body 2 is integrally connected with the disc body 1, the other end of the tail body 2 is connected with a cover plate 4 through a single rivet (see fig. 2), the disc body 1 and the tail body 2 are made of uniform materials, an anode current collecting disc is made of an aluminum material, a cathode current collecting disc is made of a nickel-plated copper material, the diameter of the single rivet pole 3 is 0.8mm, the anode pole is made of an aluminum material, the cathode pole is made of a copper material, and the thickness of the cover plate 4 is 1.4;
the connection part of the tray body 1 and the tail body 2 forms two V-shaped clamp angle structures 5 which are symmetrical along the axial direction of the tail body 2, the included angle of the V-shaped clamp angle structures 5 is 45 degrees, the radial symmetrical positions of the tray body 1 and the tail body 2 are provided with V-shaped gaps 6, the included angle degree of the V-shaped gaps 6 is 90 degrees, the radial line position on the tray body 1 extending along the axial direction of the tail body 2 is provided with two through holes 7 (the diameter is 0.5mm) which are distributed along the radial line, one through hole 7 is positioned at the central position of the tray body 1, the other through hole 7 is adjacent to the tail body 2, the distance of the two through holes 7 along the radial line is 3mm, the tray body 1 is provided with two V-shaped grooves 8 which are sunken downwards and have the depth of 0.5mm, the two grooves 8 are symmetrical along the radial line of the through hole 7, the V-shaped grooves of the two grooves 8 are opposite, the V-shaped clamp angle of the two, the length of two outer edges of the V-shaped groove 8 is 11 mm;
the lower end surfaces of the bottoms of the two grooves 8 are laser welding joint surfaces of the disc body 1 and the roll core 9 pole lug end, the laser welding joint surfaces of the disc body 1 and the roll core 9 pole lug end are embossing surfaces, welding lines 10 of laser welding are dotted V-shaped linear, the welding lines 10 on each laser welding joint surface are double-row structural forms, and the number of welding points of the double-row welding lines 10 is nine and ten respectively.
Example 2
Referring to fig. 2 and 3, a full-tab cylindrical lithium ion battery current collecting disc structure comprises a disc body 1 and a tail body 2, wherein one end of the tail body 2 is integrally connected with the disc body 1, the other end of the tail body 2 is connected with a cover plate 4 through a double rivet (see fig. 2), the disc body 1 and the tail body 2 are made of uniform materials, an anode current collecting disc is made of aluminum, a cathode current collecting disc is made of nickel-plated copper, the diameter of a double rivet pole 11 is 0.8mm, the anode pole is made of aluminum, the cathode pole is made of copper, and the thickness of the cover plate 4 is 1.4 mm;
the connection part of the tray body 1 and the tail body 2 forms two V-shaped clamp angle structures 5 which are symmetrical along the axial direction of the tail body 2, the included angle of the V-shaped clamp angle structures 5 is 45 degrees, the radial symmetrical positions of the tray body 1 and the tail body 2 are provided with V-shaped gaps 6, the included angle degree of the V-shaped gaps 6 is 90 degrees, the radial line position on the tray body 1 extending along the axial direction of the tail body 2 is provided with two through holes 7 (the diameter is 0.5mm) which are distributed along the radial line, one through hole 7 is positioned at the central position of the tray body 1, the other through hole 7 is adjacent to the tail body 2, the distance of the two through holes 7 along the radial line is 3mm, the tray body 1 is provided with two V-shaped grooves 8 which are sunken downwards and have the depth of 0.5mm, the two grooves 8 are symmetrical along the radial line of the through hole 7, the V-shaped grooves of the two grooves 8 are opposite, the V-shaped clamp angle angles of the two, the length of two outer edges of the V-shaped groove 8 is 11 mm;
the lower end surfaces of the bottoms of the two grooves 8 are laser welding joint surfaces of the disc body 1 and the winding core 9 pole lug end, the laser welding joint surfaces of the disc body 1 and the winding core 9 pole lug end are embossing surfaces, welding lines 12 of laser welding are continuous sine wave line types, and the welding lines 12 on each laser welding joint surface are double-row structural forms.
Example 3
Referring to fig. 2, the current collecting disc structure of the full-lug cylindrical lithium ion battery comprises a disc body 1 and a tail body 2, wherein one end of the tail body 2 is integrally connected with the disc body 1, the other end of the tail body 2 is connected with a cover plate 4 through a single rivet (see fig. 2), the disc body 1 and the tail body 2 are made of uniform materials, an anode current collecting disc is made of aluminum, a cathode current collecting disc is made of nickel-plated copper, the diameter of a single-rivet pole 3 is 0.8mm, the anode pole is made of aluminum, the cathode pole is made of copper, and the thickness of the cover plate 4 is 1.4 mm;
the connection part of the disk body 1 and the tail body 2 forms two V-shaped corner clamping structures 5 which are symmetrical along the axial direction of the tail body 2, the included angle of the V-shaped corner clamping structures 5 is 45 degrees, the radial symmetrical positions of the disk body 1 and the tail body 2 are provided with V-shaped notches 6, the included angle degree of the V-shaped notches 6 is 90 degrees, two through holes 7 (the diameter is 0.5mm) which are distributed along a radial line are arranged at radial line positions which extend along the axial direction of the tail body 2 on the disk body 1, one through hole 7 is positioned at the central position of the disk body 1, the other through hole 7 is adjacent to the tail body 2, the distance between the two through holes 7 along the radial line is 3mm, two C-shaped grooves 13 which are sunken downwards and have the depth of 0.5mm are arranged on the disk body 1, the two grooves 13 are symmetrical along the radial line where the through holes 7 are positioned, the C-shaped notches of the two grooves 13 are opposite, the diameter of an;
the lower end face of the bottoms of the two grooves 13 is a laser welding joint face of the disc body 1 and the winding core pole lug end, the laser welding joint face of the disc body 1 and the winding core pole lug end is a sand blasting matte face, welding lines 14 of laser welding are of a dotted C-shaped linear type, the welding lines 14 on each laser welding joint face are of a double-row structural form, and the number of welding points of the double-row welding lines 14 is nine or ten.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a full utmost point ear type cylinder lithium ion battery current collection dish structure, including disk body and one end and disk body integrally connected's afterbody, its characterized in that: the disk body and the radial symmetrical position of tail body seted up the V-arrangement breach, the disk body on set up a plurality of through-holes that distribute along the footpath line position department of tail body axial extension, the disk body on be provided with the recess of two undercut C shapes or V-arrangement, two recesses are symmetrical along the footpath line of through-hole place, and the C shape or the V-arrangement notch of two recesses are opposite, the lower terminal surface of two recess tank bottoms is the disk body and rolls up the welding faying face of core utmost point ear end, the other end of tail body link to each other with the apron through welding or rivet.
2. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 1, characterized in that: two through holes distributed along the radial line are formed in the disc body at the radial line position extending along the axial direction of the tail body, one through hole is located in the center of the disc body, the other through hole is adjacent to the tail body, and the cross sectional areas of the two through holes account for 1/10-1/8 of the cross sectional area of the disc body.
3. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 1, characterized in that: the connection part of the disk body and the tail body forms two V-shaped corner clamping structures which are symmetrical along the axial direction of the tail body.
4. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 3, characterized in that: the included angle degree of the V-shaped notch is 45-150 degrees; the included angle degree of the V-shaped clip angle structure is 30-75 degrees.
5. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 1, characterized in that: the lower end surfaces of the bottoms of the two grooves are matt surfaces, and the matt surfaces are embossing surfaces, sand blasting surfaces, formation corrosion surfaces or electroplating matt plating surfaces.
6. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 1, characterized in that: the tray body on seted up two arc breachs, two arc breachs are along the radial line symmetry at through-hole place.
7. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 1, characterized in that: the lower end surfaces of the bottoms of the two grooves are welded with the plate body of the current collecting plate and the pole lugs together through laser welding.
8. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 7, characterized in that: the lower end surfaces of the bottoms of the two grooves are welded with the plate body of the current collecting plate and the lug together through pulse laser welding or continuous laser welding.
9. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 7, characterized in that: the welding lines of the laser welding are in a dotted line type or a continuous line type, and the line type is in a linear type, a wavy line type or a broken line type.
10. The full-tab cylindrical lithium ion battery current collecting disc structure according to claim 9, characterized in that: the welding line layout of the laser welding adopts a ring, single-row or double-row structure form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069549.XU CN212934806U (en) | 2020-09-18 | 2020-09-18 | Full utmost point ear type cylinder lithium ion battery current collection dish structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069549.XU CN212934806U (en) | 2020-09-18 | 2020-09-18 | Full utmost point ear type cylinder lithium ion battery current collection dish structure |
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| Publication Number | Publication Date |
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| CN212934806U true CN212934806U (en) | 2021-04-09 |
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| CN202022069549.XU Active CN212934806U (en) | 2020-09-18 | 2020-09-18 | Full utmost point ear type cylinder lithium ion battery current collection dish structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473210A (en) * | 2022-01-27 | 2022-05-13 | 天津力神电池股份有限公司 | Current collecting disc structure of circular lithium ion battery and welding method |
| WO2024104399A1 (en) * | 2022-11-17 | 2024-05-23 | 厦门新能安科技有限公司 | Cylindrical battery and electrical device |
-
2020
- 2020-09-18 CN CN202022069549.XU patent/CN212934806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114473210A (en) * | 2022-01-27 | 2022-05-13 | 天津力神电池股份有限公司 | Current collecting disc structure of circular lithium ion battery and welding method |
| 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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