CN208767352U - A kind of new type power lithium battery - Google Patents
A kind of new type power lithium battery Download PDFInfo
- Publication number
- CN208767352U CN208767352U CN201821517020.6U CN201821517020U CN208767352U CN 208767352 U CN208767352 U CN 208767352U CN 201821517020 U CN201821517020 U CN 201821517020U CN 208767352 U CN208767352 U CN 208767352U
- Authority
- CN
- China
- Prior art keywords
- battery
- battery case
- main body
- new type
- type power
- 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.)
- Expired - Fee Related
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 239000012528 membrane Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 239000002905 metal composite material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- 229940058401 polytetrafluoroethylene Drugs 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006388 chemical passivation reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000000034 method 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
-
- 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
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of new type power lithium batteries, including battery case and the anode being arranged in battery case, diaphragm, cathode and electrolyte, the battery case includes battery case main body (2) and the compounded battery cap (1) by heat sealable flexibility antistatic barrier composite membrane and anode ear (3) and negative electrode lug (4), simultaneously closing battery shell main body, the anode ear (3) and negative electrode lug (4) are connect with anode and cathode respectively for the edge heat-sealing of the battery cap (1) and battery case main body (2) opening.Dynamic lithium battery provided by the utility model substitutes traditional plastics, metal battery nut cap using battery cap made of heat sealable flexibility antistatic barrier composite membrane, improve energy density, reduce battery weight, and when inside heating air pressure is excessive, composite membrane is easy pressure release of being risen brokenly, improves battery security.
Description
Technical field
The utility model relates to a kind of dynamic lithium batteries.
Background technique
With dynamic lithium battery in electric vehicle using more and more, the requirement to cruising ability is higher and higher.Energy density
Raising it is extremely urgent.But traditional aluminum hull, steel shell dynamic lithium battery is because use metal shell and laser welding battery cover
Cap and battery case, the raising of energy density not only increase the weight of lithium battery, also bring more security risks, cause secondary
The harm of damage.This is because power lithium-ion battery forms sealing structure after battery cap and battery case welding, work as electricity
Pond occur short circuit when, inside heating air pressure can increase rapidly, if cannot timely pressure release, be easy to happen the danger of battery explosion.It is
Therefore in dynamic lithium battery manufacturing industry, need to solve battery weight and safety while improving dynamic lithium battery energy density
Performance issue.
Utility model content
The utility model aim is to provide a kind of new type power lithium battery.The dynamic lithium battery uses heat sealable flexibility
Battery cap made of antistatic barrier composite membrane substitutes traditional plastics, metal battery nut cap, improves energy density, reduces electricity
Pond weight, and when inside heating air pressure is excessive, composite membrane is easy pressure release of being risen brokenly, improves battery security.
The purpose of this utility model is achieved through the following technical solutions: a kind of new type power lithium battery, including battery case
And anode, diaphragm, cathode and electrolyte in battery case are set, the battery case include battery case main body and by can heat
Seal flexibility antistatic barrier composite membrane and anode ear and negative electrode lug compounded battery cap, the battery cap and
The edge heat-sealings of battery case body openings and closing battery shell main body, the anode ear and negative electrode lug then respectively with anode and cathode
Connection.
Wherein one side wall is equipped with explosion-protection equipment to the battery case main body.It is described as one embodiment of the utility model
Explosion-protection equipment includes the explosionproof hole being set to battery case main body wherein in one side wall and is located in explosionproof hole and sealed explosion-proof hole
Explosion-proof ball.Further, the rupture pressure disc of closing explosionproof hole is set at the outside aperture of the explosionproof hole, is avoided in inside battery
Temperature increases gap leakage of the electrolyte between explosion-proof ball and explosionproof hole.The utility model can also use other modes, example
Such as, explosion-protection equipment includes the rupture pressure disc in aperture on the outside of explosionproof hole and setting explosionproof hole, can also on this basis, in rupture pressure disc
Anti-explosion cover is arranged in outside, when internal temperature of battery has reached thermal runaway state, inner pressure of battery is avoided to continue to rise rupture pressure disc quilt
It breaks through, electric intracisternal material is hurted sb.'s feelings with high pressure gas ejection.
The explosionproof hole is located at battery case main body wall top.The explosionproof hole is round or oval, correspondingly, explosion-proof
The section of ball is spherical or ellipse.Further, the explosion-proof ball is made of corrosion-resistant and high-temperature resistant material, such as polytetrafluoro
Ethylene ball.The rupture pressure disc includes but is not limited to metal foil, metal composite film etc..The thickness of the rupture pressure disc is in 0.1-0.3mm
Between, have a diameter larger than explosion-proof bore dia.
Four edges of opening of the battery case main body are turned-out and horizontal extension forms flanging, fully guarantee compound
Heat-sealing effect between film and battery case main body.The width of the flanging is within the scope of 3-10mm.
Heat sealable flexibility antistatic barrier composite membrane includes but is not limited to metal composite film described in the utility model.Institute
Stating metal composite film includes but is not limited to aluminum-plastic composite membrane.
The material of the battery case main body includes but is not limited to plastics, metal material.Metal material includes but is not limited to steel
Material, aluminium alloy etc..
Compared with prior art, the utility model has the following beneficial effects:
1. the utility model makes battery cap as material using heat sealable flexibility antistatic barrier composite membrane, take
On the one hand substituting metal battery cap reduces the weight of battery packages, it is close that the energy content of battery can be improved without laser welding
Degree, another aspect composite membrane and metal surface seal, and in battery-heating, heated soften of composite membrane is easily bursting at the collision to pressure release, greatly
It is big to improve safety.
2. explosion-protection equipment is arranged in battery case main body in the utility model, it is used for safety relief, further increases the peace of battery
Quan Xing.
3. the outer aperture of the explosionproof hole of explosion-protection equipment is closed by rupture pressure disc in the utility model, increases sealing waterproofness, solve
The shortcomings that leakproofness difference easily leakage electrolyte of traditional rectangular and circular batteries explosion-proof ball or water inlet.
4. the utility model battery case body openings edge is turned-out and horizontal extension forms flanging, width 3mm ~
10mm fully ensures that the heat-sealing effect between composite membrane and battery case main body.
Detailed description of the invention
Fig. 1 is the dynamic lithium battery schematic diagram of the utility model embodiment one.
Fig. 2 is the battery case exploded view of the utility model embodiment one.
Fig. 3 is the sectional view of one explosion-protection equipment of the utility model embodiment.
Specific embodiment
Combined with specific embodiments below and attached drawing is described in further detail the utility model, but the guarantor of the utility model
Protect range embodiment not limited to the following.
New type power lithium battery shown in Fig. 1-3 including battery case and the anode being arranged in battery case, diaphragm, is born
Pole and electrolyte (not shown).Battery case includes battery cap 1 and battery case main body 2.Wherein, battery case main body 2 is by aluminium
Alloy is made, and four edges are turned-out and horizontal extension formation width is the flanging of 3-10mm for opening.Battery cap 1 is by two
Piece aluminum-plastic composite membrane 11,12 and two TAB-LEAD respectively as anode ear 3 and negative electrode lug 4 are combined (referring to Fig. 1-2).
Anode ear 3 and negative electrode lug 4 are connect with the positive and cathode in battery case respectively.The neighboring area of battery cap 1 it is plastic-aluminum combined
Film and four flangings of battery case main body 2 seal to form closing composition dynamic lithium battery.
Wherein one side wall is equipped with explosion-protection equipment 5 to battery case main body 2.In the present embodiment, as shown in Fig. 2, explosion-protection equipment 5
Round explosionproof hole 51, explosion-proof ball 52 and rupture pressure disc 53 by being set to 2 one side wall top of battery case main body are constituted.Explosion-proof ball 52
For polytetrafluoroethylene (PTFE) ball, it is inlaid in explosionproof hole 51 through interference fit, sealed explosion-proof hole 51.Rupture pressure disc 53 is diameter greater than explosion-proof
The aluminium foil of 51 diameter of hole, thickness 0.1-0.3mm close explosionproof hole 51, keep away through laser welding in the outside aperture of explosionproof hole 51
Exempt from electrolyte to reveal due to 52 poor sealing of explosion-proof ball.Explosionproof hole 51 is also possible to ellipse in the present embodiment, accordingly
Ground, explosion-proof ball 52 then use polytetrafluoroethylene (PTFE) elliptical shape ball.
In the present embodiment, TAB-LEAD is combined by gel and aluminium foil and copper foil, the width of copper foil be 3mm ~
200mm, width 3mm ~ 200mm of aluminium foil, with a thickness of 0.05mm ~ 5mm.
The above dynamic lithium battery the production method is as follows:
(1) it makes battery cap: taking two panels aluminum-plastic composite membrane 11,12 and two respectively as anode ear 3 and negative electrode lug 4
TAB-LEAD, be compounded to form battery cap 1 through high temperature, as illustrated in fig. 1 and 2.200 DEG C ± 10 DEG C of combined temp, pressure is 1
Atmospheric pressure, time 3-5 second.
(2) be passivated and be roughened: to battery case main body 2 be open four flangings 21 upper surface carry out chemical passivation and
It is mechanical coarsening.Concrete operations are as follows:
1) battery case main body 2 is upside down in the container equipped with acetone solvent, so that four flangings 21 is immersed in acetone molten
In agent.In this step, it can impregnate 5 minutes or be cleaned by ultrasonic 10 minutes in acetone solvent in acetone.
2) after taking-up battery case main body 2 is dried, battery case main body 2 is upside down in the container equipped with 0.1M KOH solution,
It impregnates four flangings 21 3-5 minutes in 0.1M KOH solution, then takes out and rinsed 3 times with tap water, then use deionization
Water rinses one time, is dried up or is dried with cold wind.
3) battery case main body 2 is inverted in a reservoir, is put into passivating solution, four flangings 21 is made to impregnate 1-2 in passivating solution
Minute, taking-up is rinsed 3 times with tap water, then is rinsed one time with deionized water, is dried up or is dried with cold wind.Passivating solution is by with the following group
Divide and constitute: K2Cr2O720%, CrO370%, NaF10%, HNO3Adjusting pH value is 1.5 ~ 2.0.
4) it is put into vacuum drying oven, vacuum drying 1 hour or more under 60oC.
5) it is polished 3 to 5 times with fine sandpaper in 21 upper surface of flanging of battery case main body 2.
In step 3), passivating solution can also be K2Cr2O710%, CrO370%, NaF20%, HNO3Adjusting pH value is 1.5 ~ 2.0；
Or K2Cr2O715%, CrO370%, NaF15%, HNO3Adjusting pH value is 1.5 ~ 2.0；Or K2Cr2O720%, CrO360%, NaF20%,
HNO3Adjusting pH value is 1.5 ~ 2.0.K2Cr2O730%, CrO350%, NaF20%, HNO3Adjusting pH value is 1.5 ~ 2.0.
(3) cell package: anode, diaphragm and cathode are vertically placed in battery case main body 2, electrolyte is then added, just
Pole and cathode are separately connected anode ear 3 and negative electrode lug 4, and then that by the neighboring area of battery cap 1 is a part of plastic-aluminum combined
Film and four flangings 21 of battery case main body 2 seal compound, the composition dynamic lithium battery of closing battery shell main body 2.Combined temp
200 DEG C ± 10 DEG C, pressure is 1 atmospheric pressure, time 3-5 second.
Claims (10)
1. a kind of new type power lithium battery, including battery case and the anode being arranged in battery case, diaphragm, cathode and electrolysis
Liquid, characterized in that the battery case include battery case main body (2) and by heat sealable flexibility antistatic barrier composite membrane with just
The compounded battery cap (1) of tab (3) and negative electrode lug (4), the battery cap (1) are opened with battery case main body (2)
Simultaneously closing battery shell main body, the anode ear (3) and negative electrode lug (4) are then connect with anode and cathode respectively for the edge heat-sealing of mouth.
2. new type power lithium battery according to claim 1, characterized in that opening four of the battery case main body (2)
Edge is turned-out and horizontal extension forms flanging (21).
3. new type power lithium battery according to claim 1 or 2, characterized in that the battery case main body (2) wherein side
Wall is equipped with explosion-protection equipment (5), and the explosion-protection equipment (5) includes the explosionproof hole for being set to battery case main body (2) wherein in one side wall
(51) and be located at explosionproof hole (51) in and sealed explosion-proof hole (51) explosion-proof ball (52).
4. new type power lithium battery according to claim 3, characterized in that the explosion-protection equipment (5) further includes closing institute
State the rupture pressure disc (53) in the outside aperture of explosionproof hole (51).
5. new type power lithium battery according to claim 4, characterized in that the thickness of the rupture pressure disc (53) is in 0.1-
Between 0.3mm, explosionproof hole (51) diameter is had a diameter larger than.
6. new type power lithium battery according to claim 4 or 5, characterized in that the rupture pressure disc (53) includes but unlimited
In one of metal foil and metal composite film.
7. new type power lithium battery according to claim 3, characterized in that the explosion-proof ball (52) is using corrosion-resistant resistance to
Sphere made of high-temperature material.
8. new type power lithium battery according to claim 7, characterized in that the explosion-proof ball (52) is polytetrafluoroethylene (PTFE)
Ball.
9. new type power lithium battery according to claim 1 or 2, characterized in that the heat sealable flexibility antistatic resistance
Every composite membrane include but is not limited to metal composite film.
10. new type power lithium battery according to claim 1, characterized in that the material of the battery case main body (2) includes
But it is not limited to one of plastics and metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821517020.6U CN208767352U (en) | 2018-09-17 | 2018-09-17 | A kind of new type power lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821517020.6U CN208767352U (en) | 2018-09-17 | 2018-09-17 | A kind of new type power lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208767352U true CN208767352U (en) | 2019-04-19 |
Family
ID=66135108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821517020.6U Expired - Fee Related CN208767352U (en) | 2018-09-17 | 2018-09-17 | A kind of new type power lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208767352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987623A (en) * | 2018-09-17 | 2018-12-11 | 东莞市坤乾新能源科技有限公司 | A kind of new type power lithium battery and preparation method thereof |
-
2018
- 2018-09-17 CN CN201821517020.6U patent/CN208767352U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987623A (en) * | 2018-09-17 | 2018-12-11 | 东莞市坤乾新能源科技有限公司 | A kind of new type power lithium battery and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |