CN209232828U - Lithium ion battery with aluminum shell and its shell and its top cover - Google Patents
Lithium ion battery with aluminum shell and its shell and its top cover Download PDFInfo
- Publication number
- CN209232828U CN209232828U CN201822129387.7U CN201822129387U CN209232828U CN 209232828 U CN209232828 U CN 209232828U CN 201822129387 U CN201822129387 U CN 201822129387U CN 209232828 U CN209232828 U CN 209232828U
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- aluminium
- ion battery
- top cover
- column
- battery
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Secondary Cells (AREA)
Abstract
The utility model relates to field of lithium ion battery, disclose a kind of lithium ion battery with aluminum shell and its shell and its top cover, top cover includes, the main body made of aluminium flake, explosion-proof valve is provided on the aluminium flake, it is embedded with explosion rupture disk in the explosion-proof valve, protrusion is stamped and formed out on the aluminium flake as first electrode column；It is provided with pole column hole on the aluminium flake, through there is composite ceramic ceramic ring in the pole column hole, running through in the composite ceramic ceramic ring has second electrode column；Lower plastic is fixed in the lower surface towards the aluminium vessel inner cavity of the top cover, first electrode column described in the lower plastic face, second electrode column position be provided with hole portion, the hole portion is used to pass through for the electrode connecting parts being connected with the first electrode of battery body, second electrode, is located at below the explosion-proof valve on the lower plastic and is provided with stomata.Be conducive to improve the energy density of battery using the technical solution.
Description
Technical field
The utility model relates to field of lithium ion battery, a kind of lithium ion battery with aluminum shell and its shell and its top are disclosed
Lid.
Background technique
With the popularization of whole world environmental protection concept, new energy electric motor vehicle steps into general marketplace, how to improve new energy vehicle
Course continuation mileage becomes industry technology problem, and wherein power resources use the new energy vehicle of lithium battery, and R&D direction is set to raising electricity
The energy density of Chi Bao entirety, this requires lithium battery monomer energy densities to have to improve.
Summary of the invention
The first purpose of the utility model embodiment is to provide a kind of lithium ion battery with aluminum shell and its shell and its top cover,
Be conducive to improve the energy density of battery using the technical solution.
In a first aspect, a kind of lithium-ion battery shell top cover provided by the embodiment of the utility model, comprising:
The main body made of aluminium flake is provided with explosion-proof valve on the aluminium flake, is embedded with explosion rupture disk in the explosion-proof valve,
Protrusion is stamped and formed out on the aluminium flake as first electrode column；
It is provided with pole column hole on the aluminium flake, through there is composite ceramic ceramic ring in the pole column hole, in the composite ceramic
Running through in ceramic ring has second electrode column；
Lower plastic is fixed in the lower surface towards aluminium vessel inner cavity of the top cover, first described in the lower plastic face
Electrode column, second electrode column position be provided with hole portion, the hole portion is used for for first electrode, the second electrode with battery body
The electrode connecting parts being connected pass through, and are located at below the explosion-proof valve on the lower plastic and are provided with stomata.
Optionally, the composite ceramic ceramic ring is connect with the aluminium flake laser welding.
Optionally, the composite ceramic ceramic ring is made of the outer ring of inside and outside socket, inner ring,
The outer ring is the ring made of ceramic the first composite material being combined with aluminium；
The inner ring is the ring formed by ceramics with the second composite material that copper is combined.
Optionally, the outer ring is connect with the aluminium flake Laser Welding.
Optionally, the inner ring is connect with the second polar column Laser Welding being applied in the inner ring.
Optionally, the second electrode column includes the lower copper post to link together, upper aluminium column,
The upper aluminium column is pierced by the upper surface of aluminium flake,
The lower copper post protrusion is in the lower surface of the aluminium flake.
Optionally, the inner ring is connect with the upper aluminium column Laser Welding.
Second aspect, a kind of lithium-ion battery shell provided by the embodiment of the utility model, comprising:
The aluminium vessel made of aluminium flake with an opening,
Above-mentioned any top cover, the top cover block the opening in the aluminium vessel.
The third aspect, a kind of lithium ion battery with aluminum shell provided by the embodiment of the utility model, comprising:
Lithium-ion battery shell described above；
Electrolyte, the electrolyte, battery body are sealed in the sealing space being made of the aluminium vessel and the top cover
Interior, the electrolyte impregnates the battery body.
Battery body, the battery body are made of positive plate, diaphragm, negative electrode tab, and the diaphragm is spaced in the anode
Between piece, negative electrode tab.
Optionally, the positive plate, negative electrode tab collector on be respectively arranged with aperture be 50 nanometers to 1 millimeter between
Hole portion,
Polar active material layer on the positive plate, negative electrode tab is coated on the surface of the collector, and is filled in each
In the hole portion.
Optionally, the collector of the positive plate with a thickness of 10-13um.
Optionally, the collector of the negative electrode tab with a thickness of 4-7um.
Optionally, the diaphragm with a thickness of 7-9 um.
Optionally, the wall thickness of the aluminium vessel is less than or equal to 0.4mm.
Optionally, the main body of the top cover with a thickness of 0.8-1mm.
Optionally, the positive pole ear of the battery body is connect with aluminium switching piece laser welding,
First electrode laser welding on the aluminium switching piece and the shell is welded,.
Optionally, the second electrode column of the top cover of the shell includes the lower copper post to link together, upper aluminium column, it is described on
Aluminium column is pierced by the upper surface of aluminium flake, the lower copper post protrusion in the lower surface of the aluminium flake,
The positive pole ear and copper switching piece ultrasonic bonding connection of the battery body,
The copper switching piece and the lower copper post ultrasonic bonding connection.
Optionally, the battery body is battery core bodies monomer or the battery being made of in series and parallel multiple battery core bodies monomers
Group.
Optionally, it is wrapped with insulating protective film in the battery body, the insulating protective film is spaced in the battery
Between ontology and the aluminium vessel.
Optionally, the polar active material layer is full of each hole portion,
Surface positioned at the active material layer on the positive plate, negative electrode tab surface is flat.
Optionally, the collector of the positive plate with a thickness of 10-13um.
Optionally, the collector of the negative electrode tab with a thickness of 4-7um.
Optionally, the diaphragm with a thickness of 7-9 um.
Optionally, the wall thickness of the aluminium vessel is less than or equal to 0.4mm.
Optionally, the main body of the top cover with a thickness of 0.8-1mm.
Optionally, the positive pole ear of the battery body is connect with aluminium switching piece laser welding,
First electrode laser welding on the aluminium switching piece and the shell is welded,.
Optionally, the positive pole ear of the battery body and copper switching piece ultrasonic bonding connection,
The copper switching piece and the lower copper post ultrasonic bonding connection.
Optionally, the battery body is battery core bodies monomer or the battery being made of in series and parallel multiple battery core bodies monomers
Group.
Optionally, it is wrapped with insulating protective film in the battery body, the insulating protective film is spaced in the battery
Between ontology and the aluminium vessel.
Optionally, the positive plate, the polar active material layer in negative electrode tab are full of each hole portion,
Surface positioned at the polar active material layer on the positive plate, negative electrode tab surface is flat.
Therefore due to using the present embodiment technical solution, the present embodiment cap structure is simple, and occupancy is small in size, even
The effective use space for conveniently being conducive to improve the active polar substance of lithium ion battery using the technical solution is connect, electricity is improved
The energy density in pond.
Detailed description of the invention
Fig. 1 is the lithium ion battery assembling structure schematic diagram that the utility model embodiment 1 provides；
Fig. 2 is the configuration schematic diagram for the top cover that the utility model embodiment 1 provides；
Fig. 3 is the schematic perspective view for the top cover that the utility model embodiment 1 provides；
Fig. 4 is lower surface configuration schematic diagram of the top cover towards aluminium vessel side that the utility model embodiment 1 provides；
Fig. 5 is the current collector structure schematic diagram for the electrodes of lithium-ion batteries that the utility model embodiment 1 provides；
Fig. 6 is the structural schematic diagram for the electrodes of lithium-ion batteries that the utility model embodiment 1 provides.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing and specific embodiment, in the signal of this utility model
Property embodiment and explanation be used to explain the utility model, but be not intended to limit the scope of the present invention.
Embodiment 1:
Referring to present embodiments providing shown in Fig. 1-4, a kind of structure is simple, occupies top cover 302 small in size, the present embodiment
Top cover 302 main body be aluminium flake, Explosion-proof valve 3021 is provided on aluminium flake, is embedded with explosion rupture disk in Explosion-proof valve 3021
3022。
Be stamped and formed out on aluminium flake one protrusion using as first electrode column 3023(generally as positive terminal), aluminium flake also on
Pole column hole 3024 is set, it is multiple made of the ceramic composite ceramics being combined with metal material through one in pole column hole 3024
Close ceramic ring 3025, in composite ceramic ceramic ring 3025 through have second electrode column 3026(made of metal generally as
Negative terminal), one end of second electrode column 3026 is prominent in aluminium flake top surface.
Lower plastic 401 is fixed with to the lower surface of 301 inner cavity of aluminium vessel on top cover 302, face on lower plastic 401
One electrode column 3023, second electrode column 3026 position at be provided with hole portion 403, for for and battery body 400 positive and negative anodes
The electrode connecting parts of electrical connection pass through, and are located at below explosion-proof valve on lower plastic 401 and are provided with stomata 402, in aluminium vessel 301
The air pressure of chamber acts on explosion rupture disk 3022 by stomata 402, when the air pressure for acting on explosion rupture disk 3022 is greater than predetermined extent, prevents
Explosion-proof valve 3021 is left under gas pressure for quick-fried 3022, be released the air pressure of aluminium vessel 301, to prevent air pressure excessive
Cause battery explosion and leads to bigger security risk.
As the signal of the present embodiment, the composite ceramic ceramic ring 3025 of the present embodiment is by the mutually inside and outside outer ring being socketed, inner ring
It constitutes.Wherein outer ring is the ring that the ceramic aluminium composite material (market known materials) being mutually compounded to form by ceramics with aluminium is formed, outside
Ring is connect with 302 phase laser welding of top cover.Inner ring is the ring formed by ceramics with the ceramic carbon/carbon-copper composite material that copper is mutually compounded to form,
Inner ring is connect with the pole laser welding being located in inner ring, using the inside and outside ring structure of above-mentioned different materials, makes composite ceramic ceramic ring
3025 more easily operate with the connection of top cover 302, pole, are completely embedded reliable.
As the signal of the present embodiment, a kind of convenient second electrode column 3026 of connection, this pole are present embodiments provided
Including be fixed together up and down lower copper post 3028, upper aluminium column 3027, upper aluminium column 3027 stretches out in aluminium flake outer surface, as
External second electrode column 3026, lower copper post 3028 are stretched out in aluminium flake lower surface, and are located at battery body 400 in aluminium vessel 301
Electrode (generally cathode) electrical connection.
As the signal of the present embodiment, the positive and negative anodes of the battery body 400 of the present embodiment are by being arranged in below top cover
Electrode adapter is electrically connected with first electrode column 3023, the second electrode column 3026 on top cover 302, shown in Figure 3, battery sheet
The positive 401(aluminium pole ears of body 400) with 501 ultrasonic bonding of aluminium adapter, aluminium switching piece also with the protrusion on top cover 302 the
One electrode column, 3023 laser welding；The cathode 402(copper polar ear of battery body 400) and 502 ultrasonic bonding of copper adapter, copper turn
Second electrode column 3026 laser welding of the contact pin also with protrusion in the lower surface of top cover 302, using the electrode connection scheme electrode
Connection the space occupied is small, and the material offer for being conducive to the offer useful effect of Xiang Nengwei capacity is bigger using space, favorably
In the capacity for improving battery.
The present embodiment top cover 302 be applied to aluminum enclosure structure it is shown in Figure 1, aluminum enclosure include with one opening by
Aluminium vessel 301 made of ultra-thin aluminium flake, and be sealed in aluminium vessel 301 opening by the top cover based on ultra-thin aluminium flake
302。
The assembling structure that this aluminum enclosure is applied to lithium ion battery is shown in Figure 1, lithium ion battery with aluminum shell, main
It include: battery body 400, aluminum enclosure, electrolyte, electrolyte and battery body 400 are sealed in aluminum enclosure.Wherein aluminum enclosure is such as
Shown in Fig. 1-4.
Wherein, battery body 400 is made of positive plate, diaphragm, negative electrode tab, and diaphragm is spaced between positive plate, negative electrode tab.
The battery body 400 can may be coiling body for lamellar body.
Electrolyte, battery body 400 are sealed in the sealing space being made of aluminium vessel 301 and top cover 302, and electrolyte fills
Sub-dip steeps battery body 400.
Referring to a kind of novel electrodes of lithium-ion batteries shown in Fig. 5,6, is present embodiments provided, in positive plate, negative electrode tab
Collector 100 on be respectively arranged with the hole portion 101 that aperture is size between 50 nanometers to 1 millimeter, on positive plate, negative electrode tab
Polar active material layer 201 is coated on two surfaces of collector 100 and is filled in each hole portion 101.Using the technical solution, tool
Have it is below the utility model has the advantages that
1, it is provided with hole portion 101 on the positive/negative plate of the present embodiment, is coated on the polar material on collector 100 in addition to applying
Cloth also fills up in each hole portion 101 on collector 100 outside 100 surface of collector, the polar material on each collector 100
Surface density it is bigger, more positive and negative anodes active materials can be accommodated in same space, reduce other weights for not generating capacity material
Amount, and then achieve the purpose that improve single battery energy density.
2, the present embodiment uses the aluminum enclosure made of ultra-thin aluminium flake, reduces the wall thickness of vessel shell, reduces aluminum hull container
Weight, thus achieve the purpose that improve single battery energy density.The aluminium used as the signal of the present embodiment, the present embodiment
The wall thickness of container 301 be less than or equal to 0.4mm, the used aluminium flake of top cover 302 with a thickness of 0.8-1mm, can also make same space
It is interior to accommodate more positive and negative anodes active materials, it reduces other and does not generate the weight of capacity material, and then reach raising single battery
The purpose of energy density.
As the signal of the present embodiment, the positive/negative plate of the present embodiment is all made of ultra-thin collector 100, using it is ultra-thin every
Film, for example, this positive plate collector 100 with a thickness of 10-13um, the collector 100 of negative electrode tab with a thickness of 4-7um, diaphragm
With a thickness of 7-9 um, make that more positive and negative anodes active materials can be accommodated in same space, reduce other and do not generate capacity material
Weight, and then achieve the purpose that improve single battery energy density.
As the signal of the present embodiment, an insulating protective film 600, insulating protective film are enclosed in 400 outsourcing of battery body
600 are spaced between battery body 400 and aluminium vessel 301, play further protection to battery body 400, the protection of insulation is made
With.
As the signal of the present embodiment, the battery body 400 of the present embodiment can may be by more for single battery core bodies
A battery core bodies are composed in series and parallel.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (20)
1. a kind of lithium-ion battery shell top cover, characterized in that include:
The main body made of aluminium flake is provided with explosion-proof valve on the aluminium flake, explosion rupture disk is embedded in the explosion-proof valve, described
Protrusion is stamped and formed out on aluminium flake as first electrode column；
It is provided with pole column hole on the aluminium flake, through there is composite ceramic ceramic ring in the pole column hole, in the composite ceramic ceramic ring
It is interior through there is second electrode column；
Lower plastic, first electrode described in the lower plastic face are fixed in the lower surface towards aluminium vessel inner cavity of the top cover
Column, second electrode column position be provided with hole portion, the hole portion is used for for being connected with the first electrode of battery body, second electrode
The electrode connecting parts connect pass through, and are located at below the explosion-proof valve on the lower plastic and are provided with stomata.
2. lithium-ion battery shell top cover according to claim 1, characterized in that
The composite ceramic ceramic ring is connect with the aluminium flake laser welding.
3. lithium-ion battery shell top cover according to claim 1, characterized in that
The composite ceramic ceramic ring is made of the outer ring of inside and outside socket, inner ring,
The outer ring is the ring made of ceramic the first composite material being combined with aluminium；
The inner ring is the ring formed by ceramics with the second composite material that copper is combined.
4. lithium-ion battery shell top cover according to claim 3, characterized in that
The outer ring is connect with the aluminium flake Laser Welding.
5. lithium-ion battery shell top cover according to claim 3, characterized in that
The inner ring is connect with the second polar column Laser Welding being applied in the inner ring.
6. lithium-ion battery shell top cover according to claim 3, characterized in that
The second electrode column includes the lower copper post to link together, upper aluminium column,
The upper aluminium column is pierced by the upper surface of aluminium flake,
The lower copper post protrusion is in the lower surface of the aluminium flake.
7. lithium-ion battery shell top cover according to claim 6, characterized in that
The inner ring is connect with the upper aluminium column Laser Welding.
8. a kind of lithium-ion battery shell, characterized in that include:
The aluminium vessel made of aluminium flake with an opening,
Any top cover of claim 1 to 7, the top cover block the opening in the aluminium vessel.
9. a kind of lithium ion battery with aluminum shell, characterized in that include:
Lithium-ion battery shell according to any one of claims 8；
Electrolyte, the electrolyte, battery body are sealed in the sealing space being made of the aluminium vessel and the top cover, institute
It states electrolyte and impregnates the battery body；
Battery body, the battery body are made of positive plate, diaphragm, negative electrode tab, and the diaphragm is spaced in the positive plate, bears
Between pole piece.
10. lithium ion battery with aluminum shell according to claim 9, characterized in that
The positive plate, negative electrode tab collector on be respectively arranged with aperture be 50 nanometers to 1 millimeter between hole portion,
Polar active material layer on the positive plate, negative electrode tab is coated on the surface of the collector, and is filled in each described
In hole portion.
11. lithium ion battery with aluminum shell according to claim 10, characterized in that
The collector of the positive plate with a thickness of 10-13um.
12. lithium ion battery with aluminum shell according to claim 10, characterized in that
The collector of the negative electrode tab with a thickness of 4-7um.
13. lithium ion battery with aluminum shell according to claim 10, characterized in that
The diaphragm with a thickness of 7-9 um.
14. lithium ion battery with aluminum shell according to claim 9, characterized in that
The wall thickness of the aluminium vessel is less than or equal to 0.4mm.
15. lithium ion battery with aluminum shell according to claim 9, characterized in that
The main body of the top cover with a thickness of 0.8-1mm.
16. lithium ion battery with aluminum shell according to claim 9, characterized in that
The positive pole ear of the battery body is connect with aluminium switching piece laser welding,
First electrode column laser welding on the aluminium switching piece and the shell is welded.
17. lithium ion battery with aluminum shell according to claim 9, characterized in that
The second electrode column of the top cover of the shell includes the lower copper post to link together, upper aluminium column, and the upper aluminium column is pierced by
The upper surface of aluminium flake, the lower copper post protrusion is in the lower surface of the aluminium flake；
The positive pole ear and copper switching piece ultrasonic bonding connection of the battery body,
The copper switching piece and the lower copper post ultrasonic bonding connection.
18. lithium ion battery with aluminum shell according to claim 9, characterized in that
The battery body is battery core bodies monomer or the battery pack being made of in series and parallel multiple battery core bodies monomers.
19. lithium ion battery with aluminum shell according to claim 9, characterized in that
It is wrapped with insulating protective film in the battery body, the insulating protective film is spaced in the battery body and the aluminium
Between container.
20. lithium ion battery with aluminum shell according to claim 9, characterized in that
Polar active material layer on the positive plate, negative electrode tab is full of each hole portion,
Surface positioned at the polar active material layer on the positive plate, negative electrode tab surface is flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822129387.7U CN209232828U (en) | 2018-12-18 | 2018-12-18 | Lithium ion battery with aluminum shell and its shell and its top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822129387.7U CN209232828U (en) | 2018-12-18 | 2018-12-18 | Lithium ion battery with aluminum shell and its shell and its top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209232828U true CN209232828U (en) | 2019-08-09 |
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ID=67508303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822129387.7U Active CN209232828U (en) | 2018-12-18 | 2018-12-18 | Lithium ion battery with aluminum shell and its shell and its top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209232828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421154A (en) * | 2020-10-20 | 2021-02-26 | 浙江南都电源动力股份有限公司 | Lithium battery top cover assembly, lithium battery and preparation method of lithium battery |
| CN114335919A (en) * | 2021-12-22 | 2022-04-12 | 江苏海基新能源股份有限公司 | Square metal shell lithium ion battery and assembly process thereof |
-
2018
- 2018-12-18 CN CN201822129387.7U patent/CN209232828U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421154A (en) * | 2020-10-20 | 2021-02-26 | 浙江南都电源动力股份有限公司 | Lithium battery top cover assembly, lithium battery and preparation method of lithium battery |
| CN114335919A (en) * | 2021-12-22 | 2022-04-12 | 江苏海基新能源股份有限公司 | Square metal shell lithium ion battery and assembly process thereof |
| CN114335919B (en) * | 2021-12-22 | 2024-03-08 | 江苏海基新能源股份有限公司 | Square metal shell lithium ion battery and assembly process thereof |
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