CN209389151U - Square lithium ion battery structure with optimized inner space - Google Patents
Square lithium ion battery structure with optimized inner space Download PDFInfo
- Publication number
- CN209389151U CN209389151U CN201920039526.9U CN201920039526U CN209389151U CN 209389151 U CN209389151 U CN 209389151U CN 201920039526 U CN201920039526 U CN 201920039526U CN 209389151 U CN209389151 U CN 209389151U
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- CN
- China
- Prior art keywords
- square
- lithium ion
- inner space
- ion battery
- battery
- 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.)
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Links
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 20
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229920003023 plastic Polymers 0.000 claims abstract description 37
- 239000004033 plastic Substances 0.000 claims abstract description 37
- 239000003792 electrolyte Substances 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000005457 optimization Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 229920001617 Vinyon Polymers 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a square lithium ion battery structure with optimized internal space, which comprises a square battery shell, a battery cover plate component fixed on the square battery shell in a sealing way and a battery roll core inside the square battery shell; the battery roll core comprises a plurality of roll cores, the roll cores are arranged side by side along the thickness direction of the battery, the roll cores are formed by winding a positive plate, a roll film, a negative plate and a diaphragm, and a first plastic support is filled between the two adjacent roll cores and the inner wall of the square battery shell. The utility model discloses a hole space is filled between roll core and battery shell, has compacted the inner space, can solve the higher problem of present square aluminum hull battery liquid injection coefficient to extra space has improved the consumption to electrolyte among the prior art.
Description
Technical field
The utility model relates to technical field of lithium ion more particularly to a kind of rectangular lithium ions for optimizing inner space
Battery structure.
Background technique
Current driving force field of batteries, is divided with structure, as long as including that rectangular aluminum hull, cylinder aluminum hull and soft-package battery three are big
Class, wherein especially maximum with the accounting of rectangular aluminum-shell battery.
Fluid injection coefficient can be defined as electrolyte weight required for the every Ah capacity of a finished battery.Cylinder aluminum hull and soft
Packet inside battery is compact-sized, and electrolyte is filled primarily in the hole between pole piece, diaphragm and pole piece and diaphragm, in battery
Portion not additional redundant space consumes electrolyte.However, rectangular cell is then different, structure is had edges and corners, and core is then
With certain radian, cause core and shell that cannot agree with completely, there are biggish hole, the electricity of this structure between them
Pond needs additional electrolysis to be filled between core and shell.This interstitial space of rectangular aluminum-shell battery, on the one hand to swim
The contribution not a bit to capacity of electrolyte from therebetween, additional electrolyte weight reduce the energy density of battery,
On the other hand, the electrolyte inside core once enters this segment space, it will be difficult to return inside core, be easy to cause electricity
Pond later period electrolyte owes liquid, leads to degradation of cell performance.
Currently, with square power lithium ion cell large scale, the development trend of high capacity, between core and shell
Absolute interstitial space increasingly come, this problem will be more and more prominent.
Utility model content
Based on technical problem present in background technique, the utility model proposes a kind of rectangular lithiums for optimizing inner space
Ion battery configuration.
The utility model proposes a kind of optimization inner space square lithium ion battery structure, including cubic battery
The battery roll core group inside battery cover board assembly and square-shaped battery casing that body, sealing are fixed on square-shaped battery casing；Electricity
Pond core group includes multiple core, and multiple core are arranged side by side along cell thickness direction, core by positive plate, wound membrane, negative electrode tab,
Membrane winding forms, and position is filled with first between the gap two sides between two neighboring core and square-shaped battery casing inner wall
Plastic stent.
Preferably, the first plastic stent is made of the light plastic of electrolyte resistance corrosion.
Preferably, the first plastic stent is made of vinyon material.
Preferably, the length of the first plastic stent and the width of diaphragm are equal.
Preferably, the first plastic stent has isoceles triangle tee section.
Preferably, the gap two sides between outermost core and square-shaped battery casing inner wall are filled with the second modeling
Expect bracket.
Preferably, the second plastic stent is made of the light plastic of electrolyte resistance corrosion.
Preferably, the second plastic stent is made of vinyon material.
Preferably, the length of the second plastic stent and the width of diaphragm are equal.
Preferably, the second plastic stent has right triangular cross-sectional.
The utility model proposes a kind of optimization inner space square lithium ion battery structure, by core and battery
Interstitial space is filled between shell, compact inner space, and it is higher to be able to solve current rectangular aluminum-shell battery fluid injection coefficient
Problem, and improve consumption of the exceptional space to electrolyte in the prior art；The density of plastics described in the utility model≤
1g/cm3 compared with prior art, there is certain help to the amplification of energy density lower than the density of electrolyte.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of optimization inner space square lithium ion battery structure structural representation
Figure.
Specific embodiment
Referring to Fig.1, the utility model proposes a kind of square lithium ion battery structures for optimizing inner space, including square electric
Pond shell 1, sealing are fixed on the battery cover board assembly on square-shaped battery casing 1 and the battery winding inside square-shaped battery casing 1
Core group；Wherein:
Battery roll core group includes multiple core, and multiple core 2 are arranged side by side along cell thickness direction, core 2 by positive plate,
Wound membrane, negative electrode tab, membrane winding form, the meta position of the gap two sides between two neighboring core 2 and 1 inner wall of square-shaped battery casing
It sets filled with the first plastic stent 3, the gap two between outermost two core 2 and 1 inner wall of square-shaped battery casing
Side is filled with the second plastic stent 4.
In the present embodiment, the first plastic stent 3, the second plastic stent 4 are all made of the light plastic system of electrolyte resistance corrosion
At density is less than or equal to 1g/cm3.In the present embodiment, the first plastic stent 3, the second plastic stent 4 are all made of polyethylene modeling
Material material is made, density 0.85-0.95g/cm3。
In the present embodiment, the first plastic stent 3, the length of the second plastic stent 4 are equal with the width of diaphragm.
In the present embodiment, the first plastic stent 3 has isoceles triangle tee section, and the second plastic stent 4 has right angle trigonometry
Tee section.
The utility model by between core 2 and square-shaped battery casing 1 interstitial space be filled, compact internal sky
Between, it is able to solve the current rectangular higher problem of aluminum-shell battery fluid injection coefficient, and improve exceptional space pair in the prior art
The consumption of electrolyte；Density≤1g/cm3 of plastics described in the utility model compares existing skill lower than the density of electrolyte
Art has certain help to the amplification of energy density.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (10)
1. a kind of square lithium ion battery structure for optimizing inner space, which is characterized in that including square-shaped battery casing (1), close
Sealing is scheduled on the battery cover board assembly on square-shaped battery casing (1) and the battery roll core group of square-shaped battery casing (1) inside；Electricity
Pond core group includes multiple core (2), and multiple core (2) are arranged side by side along cell thickness direction, and core (2) is by positive plate, volume
Film, negative electrode tab, membrane winding form, between the gap two sides between two neighboring core (2) and square-shaped battery casing (1) inner wall
Position is filled with the first plastic stent (3).
2. the square lithium ion battery structure of optimization inner space according to claim 1, which is characterized in that the first plastics
Bracket (3) is made of the light plastic of electrolyte resistance corrosion.
3. the square lithium ion battery structure of optimization inner space according to claim 2, which is characterized in that the first plastics
Bracket (3) is made of vinyon material.
4. the square lithium ion battery structure of optimization inner space according to any one of claim 1-3, feature exist
In the length of the first plastic stent (3) is equal with the width of diaphragm.
5. the square lithium ion battery structure of optimization inner space according to any one of claim 1-3, feature exist
In the first plastic stent (3) has isoceles triangle tee section.
6. the square lithium ion battery structure of optimization inner space according to any one of claim 1-3, feature exist
In the gap two sides between outermost core (2) and square-shaped battery casing (1) inner wall are filled with the second plastic stent
(4)。
7. the square lithium ion battery structure of optimization inner space according to claim 6, which is characterized in that the second plastics
Bracket (4) is made of the light plastic of electrolyte resistance corrosion.
8. the square lithium ion battery structure of optimization inner space according to claim 7, which is characterized in that the second plastics
Bracket (4) is made of vinyon material.
9. the square lithium ion battery structure of optimization inner space according to claim 8, which is characterized in that the second plastics
The length of bracket (4) is equal with the width of diaphragm.
10. the square lithium ion battery structure of optimization inner space according to claim 8 or claim 9, which is characterized in that second
Plastic stent (4) has right triangular cross-sectional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920039526.9U CN209389151U (en) | 2019-01-10 | 2019-01-10 | Square lithium ion battery structure with optimized inner space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920039526.9U CN209389151U (en) | 2019-01-10 | 2019-01-10 | Square lithium ion battery structure with optimized inner space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209389151U true CN209389151U (en) | 2019-09-13 |
Family
ID=67853094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920039526.9U Active CN209389151U (en) | 2019-01-10 | 2019-01-10 | Square lithium ion battery structure with optimized inner space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209389151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098455A1 (en) * | 2019-11-22 | 2021-05-27 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| WO2023065974A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, battery and electric device |
-
2019
- 2019-01-10 CN CN201920039526.9U patent/CN209389151U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021098455A1 (en) * | 2019-11-22 | 2021-05-27 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN112952273A (en) * | 2019-11-22 | 2021-06-11 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| EP4053976A4 (en) * | 2019-11-22 | 2024-08-14 | Byd Co Ltd | Battery, battery module, battery pack and electric vehicle |
| WO2023065974A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, battery and electric device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |