CN220544052U - Cylindrical battery with aluminum shell - Google Patents
Cylindrical battery with aluminum shell Download PDFInfo
- Publication number
- CN220544052U CN220544052U CN202321964380.1U CN202321964380U CN220544052U CN 220544052 U CN220544052 U CN 220544052U CN 202321964380 U CN202321964380 U CN 202321964380U CN 220544052 U CN220544052 U CN 220544052U
- Authority
- CN
- China
- Prior art keywords
- battery
- aluminum
- shell
- current collecting
- collecting disc
- Prior art date
- 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.)
- Active
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 83
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000004411 aluminium Substances 0.000 claims description 25
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 7
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 7
- 229910001415 sodium ion Inorganic materials 0.000 abstract description 6
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 239000011257 shell material Substances 0.000 description 36
- 238000003466 welding Methods 0.000 description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001148 Al-Li alloy Inorganic materials 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a cylindrical battery with an aluminum shell, which comprises an aluminum battery shell and a battery core arranged in the aluminum battery shell, wherein a positive electrode current collecting disc is welded at the top of the inner side of the aluminum battery shell, a positive electrode column is arranged above the battery core, the end part of the positive electrode column is in contact with the positive electrode current collecting disc, a negative electrode tab is arranged below the battery core, a negative electrode current collecting disc is arranged below the negative electrode tab, and a negative electrode column penetrating through the aluminum battery shell is arranged below the negative electrode current collecting disc; according to the utility model, aluminum materials are used for replacing the existing nickel-plated steel materials, and the battery structure is combined, so that the weight of the lithium ion battery and sodium ion battery structural parts is reduced, and meanwhile, the battery processing difficulty and equipment investment are reduced; the aluminum battery shell is manufactured by integrally forming aluminum materials, and the cost of the battery shell is low; because the aluminum material has low density, the weight of the battery structural part is further reduced, and the quality and energy density of the battery are improved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a cylindrical battery with an aluminum shell.
Background
The cylindrical lithium ion battery generally adopts a nickel-plated steel shell as a shell and also serves as a negative electrode terminal; the positive electrode adopts aluminum or nickel-plated steel as a positive electrode terminal; the nickel-plated steel strip has low cost and excellent stamping performance, and can provide excellent corrosion resistance by being matched with an electroplating process, so that the nickel-plated steel strip is popular with lithium battery enterprises.
However, from the viewpoint of battery weight reduction and processing cost, the aluminum housing is advantageous because of low material density and high elongation. However, when aluminum is used as the negative electrode terminal, lithium is easily intercalated, and the aluminum lithium alloy is formed to cause leakage of the case through holes, so that the aluminum case can only be used as the positive electrode terminal or is not electrified. However, if the shell body is positively charged, it is feasible to integrally form the shell body by aluminum. The cylindrical sodium ion battery also adopts a lithium battery structural design thought at present, and a nickel plating steel shell is adopted as a shell material. Compared with a lithium ion battery, the negative electrode terminal is made of aluminum, and sodium ions cannot be embedded into the aluminum, so that the problem of perforation of the shell is avoided, and feasibility exists in the case body integrally formed by aluminum;
the existing lithium ion battery with an aluminum shell (shown in the attached figure 1 of the specification) generally adopts the following design that a positive terminal on a positive end cover a of the battery is communicated with an end cover, a battery cell positive electrode b and the positive terminal are welded by ultrasonic welding, an insulating sheet is arranged between a negative terminal on a negative end cover d and the end cover, and a battery cell negative electrode and the negative terminal are welded by ultrasonic. Then, using laser welding to weld and seal the end cover a/d and the aluminum shell body c;
because the shell is required to be sealed by using a plurality of laser welding technologies, the battery is required to be provided with a helium test for tightness detection; the overall production efficiency of the battery is low, and the equipment investment cost is high; in addition, the manufacturing and processing cost of the battery end cover and the shell body is high.
Disclosure of Invention
The utility model aims to provide a cylindrical battery with an aluminum shell, which solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an aluminium system shell cylinder type battery, includes aluminium system battery case and sets up aluminium system battery case is inside electric core, the inboard top welding of aluminium system battery case has positive pole current collecting disc, electric core top is equipped with the positive pole post, positive pole post tip with positive pole current collecting disc contact, electric core below is equipped with the negative pole tab, negative pole tab below is equipped with negative pole current collecting disc, negative pole current collecting disc below is equipped with runs through the negative pole post of aluminium system battery case.
The aluminum battery shell is provided with an extrusion groove used for clamping the battery cell along the circumferential direction.
The edge of the positive electrode current collecting disc is provided with an extension protrusion, the extension protrusion is attached to the inner wall of the aluminum battery shell, and the positive electrode current collecting disc is welded inside the aluminum battery shell through the extension protrusion.
And an insulating sheet is arranged between the bottom of the inner wall of the aluminum battery shell and the negative electrode current collecting disc.
And a sealing ring is arranged at the joint of the negative pole column and the aluminum battery shell.
Wherein, aluminium system battery shell top is equipped with the back lid.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, aluminum materials are used for replacing the existing nickel-plated steel materials, and the battery structure is combined, so that the weight of the lithium ion battery and sodium ion battery structural parts is reduced, and meanwhile, the battery processing difficulty and equipment investment are reduced; the aluminum battery shell is manufactured by integrally forming aluminum materials, and the cost of the battery shell is low; because the aluminum material has low density, the weight of the battery structural part is further reduced, and the quality and energy density of the battery are improved.
Drawings
Fig. 1 is a schematic diagram of a front view structure of a lithium ion battery with an aluminum shell in the prior art;
FIG. 2 is a schematic diagram of a front view structure of the present utility model;
FIG. 3 is a schematic view of a bearing structure according to the present utility model;
fig. 4 is a schematic diagram of a layout cross-sectional structure of the present utility model.
In the figure: 1. an aluminum battery case; 2. extruding the groove; 3. a battery cell; 4. a positive electrode current collecting plate; 5. an epitaxial protrusion; 6. a negative electrode column; 7. a negative electrode tab; 8. an insulating sheet; 9. a seal ring; 10. a negative electrode current collecting plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, the present embodiment provides a technical solution: the utility model provides an aluminium system shell cylinder type battery, including aluminium system battery case 1, and set up at the inside electric core 3 of aluminium system battery case 1, aluminium system battery case 1 adopts punching press integrated into one piece to form, the cost of battery case has been reduced, insert electric core 3 inside aluminium system battery case 1, the inboard top welding of aluminium system battery case 1 has positive current collector 4, electric core 3 top is equipped with the positive pole post, positive pole post tip and positive current collector 4 contact, the edge of positive current collector 4 is equipped with epitaxial bulge 5, epitaxial bulge 5 and the laminating of aluminium system battery case 1 inner wall, positive current collector 4 is through epitaxial bulge 5 welding inside aluminium system battery case 1, after packing into aluminium system battery case 1 inside with electric core 3, then weld positive pole post and electric core 3, positive current collector 4 together (using resistance welding mode or ultrasonic torque welding mode), laser welding's number of times has been reduced, the bad risk such as weeping, then be equipped with the electric core 4 through epitaxial bulge 5 and be used for the extrusion die holder 1 at aluminium system battery case 1 (using ultrasonic welding or laser welding), the outside battery case 1 is equipped with along the circumferencial direction and is used for the electric core 3 to make the extrusion die holder, make the inside extrusion die 1 at the inside of aluminium system battery case 1, thereby seal 1, the inside seal is formed at the inside the extrusion die 1, the inside seal is sealed 1 is made at the inside the extrusion die 1, the annular die case is used for the extrusion die 1, the inside the extrusion die 1, and is sealed.
Wherein, a negative electrode tab 7 is arranged below the battery cell 3, a negative electrode current collecting disc 10 is arranged below the negative electrode tab 7, and a negative electrode column 6 penetrating through the aluminum battery shell 1 is arranged below the negative electrode current collecting disc 10; an insulating sheet 8 is arranged between the bottom of the inner wall of the aluminum battery shell 1 and the negative electrode current collecting disc 10; the junction of negative pole post 6 and aluminium system battery case 1 is equipped with sealing washer 9, when using, first set up one deck insulating sheet 8 in aluminium system battery case 1 inside bottom, then insert negative pole post 6 in aluminium system battery case 1 bottom to cup joint sealing washer 9 at the junction of negative pole post 6 and aluminium system battery case 1, then be equipped with negative pole collector plate 10 and negative pole tab 7 on insulating sheet 8 in proper order, and guarantee to weld between negative pole post 6 and the negative pole collector plate 10, then assemble electric core 3 in aluminium system battery case 1, and guarantee electric core 3 bottom and negative pole tab 7 contact.
If the sodium ion battery is a sodium ion battery, an aluminum pole is adopted, and at the moment, the end of the negative pole is provided with a rear cover section which can be the positive pole and the negative pole; if the lithium ion battery is a copper/steel pole or nickel-plated copper/steel pole, the end of the negative pole is a negative pole, and the end of the rear cover is a positive pole.
Working principle: when the battery pack is used, the insulating sheet 8 is arranged at the bottom of the inside of the aluminum battery shell 1, the negative pole column 6 is inserted into the bottom of the aluminum battery shell 1, the sealing ring 9 is sleeved at the joint of the negative pole column 6 and the aluminum battery shell 1, the negative pole current collecting disc 10 and the negative pole lug 7 are sequentially arranged on the insulating sheet 8, welding between the negative pole column 6 and the negative pole current collecting disc 10 is ensured, the battery cell 3 is assembled in the aluminum battery shell 1, the bottom of the battery cell 3 is ensured to be contacted with the negative pole lug 7, then the positive pole column is welded with the battery cell 3 and the positive pole current collecting disc 4 together (in a resistance welding mode or an ultrasonic torsion welding mode), the number of times of laser welding is reduced, the bad risks such as liquid leakage are reduced, then the positive pole current collecting disc 4 is welded on the aluminum battery shell 1 through the epitaxial bulge 5 (in an ultrasonic welding mode or a laser welding mode), the extrusion groove 2 for clamping the battery cell 3 is formed outside the aluminum battery shell 1 along the circumferential direction, after the welding is finished, the battery cell 3 is extruded into an annular extrusion groove 2 outside the aluminum battery shell 1, the inside the corresponding annular bulge is formed inside the battery shell 1, the battery cell 3 is clamped inside the battery cell 3, and finally the battery cell 3 is sealed inside the aluminum battery shell 1 in a mechanical top sealing mode.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (6)
1. The utility model provides an aluminium system shell cylinder battery, includes aluminium system battery case (1), and sets up electric core (3) in inside aluminium system battery case (1), its characterized in that: the battery pack is characterized in that an anode current collecting disc (4) is welded at the top of the inner side of the aluminum battery shell (1), an anode column is arranged above the battery cell (3), the end part of the anode column is in contact with the anode current collecting disc (4), a cathode lug (7) is arranged below the battery cell (3), a cathode current collecting disc (10) is arranged below the cathode lug (7), and a cathode column (6) penetrating through the aluminum battery shell (1) is arranged below the cathode current collecting disc (10).
2. An aluminum can cylindrical battery as in claim 1 wherein: the aluminum battery shell (1) is provided with an extrusion groove (2) for clamping the battery cell (3) along the circumferential direction.
3. An aluminum can cylindrical battery as in claim 1 wherein: the edge of the positive electrode current collecting disc (4) is provided with an extension bulge (5), the extension bulge (5) is attached to the inner wall of the aluminum battery shell (1), and the positive electrode current collecting disc (4) is welded inside the aluminum battery shell (1) through the extension bulge (5).
4. An aluminum can cylindrical battery as in claim 1 wherein: an insulating sheet (8) is arranged between the bottom of the inner wall of the aluminum battery shell (1) and the negative electrode current collecting disc (10).
5. An aluminum can cylindrical battery as in claim 1 wherein: and a sealing ring (9) is arranged at the joint of the negative pole column (6) and the aluminum battery shell (1).
6. An aluminum can cylindrical battery as in claim 1 wherein: the top of the aluminum battery shell (1) is provided with a rear cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321964380.1U CN220544052U (en) | 2023-07-25 | 2023-07-25 | Cylindrical battery with aluminum shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321964380.1U CN220544052U (en) | 2023-07-25 | 2023-07-25 | Cylindrical battery with aluminum shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220544052U true CN220544052U (en) | 2024-02-27 |
Family
ID=89962730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321964380.1U Active CN220544052U (en) | 2023-07-25 | 2023-07-25 | Cylindrical battery with aluminum shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220544052U (en) |
-
2023
- 2023-07-25 CN CN202321964380.1U patent/CN220544052U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |