CN207009526U - A kind of lithium ion battery that can discharge internal gas - Google Patents
A kind of lithium ion battery that can discharge internal gas Download PDFInfo
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- CN207009526U CN207009526U CN201720998401.XU CN201720998401U CN207009526U CN 207009526 U CN207009526 U CN 207009526U CN 201720998401 U CN201720998401 U CN 201720998401U CN 207009526 U CN207009526 U CN 207009526U
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- battery
- package casing
- external package
- diaphragm seal
- metal coating
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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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- 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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- Gas Exhaust Devices For Batteries (AREA)
- Primary Cells (AREA)
- Secondary Cells (AREA)
Abstract
The utility model provides a kind of lithium ion battery that can discharge internal gas, it includes battery plus-negative plate, battery core, electrolyte, external package casing, ventilative diaphragm seal is provided with external package casing upper side, ventilative diaphragm seal can free in and out gas, its upper side is provided with the metal coating piece being fixed on external package casing with downside, substantial amounts of said minuscule hole is provided with metal coating piece, ventilative diaphragm seal above external package casing in time can discharge internal gas, internal pressure is avoided to increase, improve stability test and security, the ventilative diaphragm seal can be passed through with barrier liquid simultaneously, battery electrolyte inside will not leak, the normal use of battery is not influenceed.
Description
Technical field
It the utility model is related to technical field of lithium ion, and in particular to a kind of lithium ion that can discharge internal gas
Battery.
Background technology
Lithium ion battery is with the features such as its is in light weight, capacity is high, operating voltage is high, service life is long and pollution is few in hand
The 3C such as machine, notebook computer fields are developed rapidly, and its global marketing volume has been over the summation of ni-mh, nickel-cadmium cell,
China's Development of Electric Vehicles is rapid in recent years, and volume of production and marketing reaches the whole world first.With the demand growth of electric automobile, to lithium ion
Battery proposes higher requirement, it is desirable to the Stability Analysis of Structures of battery, uniformity are good, safe and reliable, so constantly improve lithium from
The material of sub- battery, technique, equipment are urgent work.In recent years, lithium ion battery is more next as a kind of secondary cell, application
Extensively, to the performance requirements of battery also more and more higher.
Fine degree when being processed due to lithium battery is inadequate, it some times happens that nothing after electrolyte inside is by multiple discharge and recharge
The chemical change that method avoids, electrolytically generated a large amount of gases, it is difficult to solve unavoidable problem that these, which are all, can only control non-defective unit
Rate, stability test is improved as far as possible, and the gas of general battery Inner electrolysis generation is largely hydrogen, oxygen, carbon dioxide
It is small Deng gas, these gas molecule particle diameters, but easily chemically react, the safety problem during battery use is caused,
The battery extreme cases such as blast even occur, jeopardize the safety of user, and when cell reaction occurs for battery, produce a large amount of
Gas, inside battery pressure can be steeply risen, and inside battery stability is caused further to influence, and produced vicious circle, made electricity
Being swift in response inside pond crumbles, and battery box lunch fails, so needing to research and develop a kind of lithium ion battery, when inside battery occurs
Cell reaction in time can discharge these gases when producing gas, maintain the pressure of inside battery stable, while again not to electricity
Pond sealing impacts, and electrolyte will not leak, so as to further improve the security of lithium battery.
Utility model content
The utility model embodiment provides a kind of lithium ion battery that can discharge internal gas, when electricity occurs for inside battery
When solving generated reactive gas, internal gas can be discharged in time, stable pressure, strengthens battery security.
To solve the above problems, the technical scheme that the utility model embodiment uses is as follows：
A kind of lithium ion battery that can discharge internal gas, it includes battery plus-negative plate, battery core, electrolyte, outer packing
Housing, the battery plus-negative plate are connected in battery core and stretched out from external package casing, and the battery core is placed in outer packing shell body
Electrolyte in, these constitute the fundamental of lithium battery, wherein the external package casing is using hard not plastically deformable
Material, very high external intensity can be brought to battery, improve stress anti-pressure ability, set on the external package casing upper side
Have ventilative diaphragm seal, the ventilative diaphragm seal specifically act as that gas can be freed in and out, but can barrier liquid, such a material
Technique is ripe, without elaborating, can use diaphragm seal of being breathed freely made of synthesis high score material, such as polytetrafluoroethylene (PTFE)
Waterproof is saturating, can also use the material such as silica gel ventilated membrane, is when cell reaction occurs for inside battery the characteristics of the utility model
And when producing gas, the ventilative diaphragm seal above external package casing in time can discharge internal gas, avoid internal pressure from increasing
Add, improve stability test and security, while the ventilative diaphragm seal can be with barrier liquid by the way that battery electrolyte inside will not
Leakage, the normal use of battery is not influenceed.
Further, the upper side of the ventilative diaphragm seal is provided with the metal being fixed on external package casing with downside
Screening glass, substantial amounts of said minuscule hole is provided with the metal coating piece, it can be fixed on external package casing using Type of Welding
On, the ventilative diaphragm seal is just clipped among two panels metal coating piece, easily damaged because ventilative diaphragm seal is more fragile, this
The way that sample is sandwiched centre using metal coating piece can avoid influence of the foreign impacts to diaphragm seal of breathing freely, and described
A large amount of said minuscule holes are provided with metal coating piece, the disengaging of gas is not interfered with, still keeps air permeable effect.
Further, the aperture for a large amount of said minuscule holes being provided with the metal coating piece is to be got over less than 0.1mm, its aperture
Small, the protection to diaphragm seal of breathing freely is better, can block most chaff interferences and touch ventilative diaphragm seal, and modern crafts pair
Perforate is also quite ripe on sheet metal, and aperture is arranged to 0.1mm and can be very good to balance processing cost and realize effect.
Further, the ventilative diaphragm seal on the external package casing upper side is provided with more with supporting metal coating piece
Group, the gas of the interior generation of battery only can be walked up, and what can be tried one's best all discharges inside battery gas.
Brief description of the drawings
, below will be to embodiment and description of the prior art in order to illustrate more clearly of the utility model embodiment technical scheme
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the partial enlargement structural representation of the utility model embodiment.
Embodiment
The utility model embodiment provides a kind of lithium ion battery that can discharge internal gas, when electricity occurs for inside battery
These gases can be discharged in time when solving generated reactive gas, maintain the pressure of inside battery stable, while again not to battery
Sealing impacts, and electrolyte will not leak, so as to further improve the security of lithium battery.
In order that those skilled in the art more fully understand the utility model, it is real below in conjunction with the utility model
The accompanying drawing in example is applied, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that be described
Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all should
When the scope for belonging to the utility model protection.
As shown in figure 1, a kind of lithium ion battery that can discharge internal gas, it includes battery plus-negative plate 1, battery core 2, electricity
Liquid 3, external package casing 4 are solved, the battery plus-negative plate 1 is connected in battery core 2 and stretched out from external package casing 4, the battery core 2
It is placed in the electrolyte 3 in external package casing 4, these constitute the fundamental of lithium battery, wherein the external package casing 4 is adopted
With hard not plastic deformable material, very high external intensity can be brought to battery, improves stress anti-pressure ability, the outsourcing
Ventilative diaphragm seal 5 is provided with the dress upper side of housing 4, the ventilative diaphragm seal 5 specifically act as that gas can be freed in and out, but
Can barrier liquid, such a material technology is ripe, without elaborating, can use synthesis macromolecule material made of
Ventilative diaphragm seal, as polytetrafluoroethylene (PTFE) waterproof is saturating, the materials such as silica gel ventilated membrane can also be used, be the characteristics of the utility model
When cell reaction occurs for inside battery and produces gas, the ventilative diaphragm seal 5 above external package casing can be in time by inside
Gas is discharged, and avoids internal pressure from increasing, and improves stability test and security, while the ventilative diaphragm seal 5 can stop
Liquid is by the way that battery electrolyte inside 3 will not leak, and not influence the normal use of battery.
Further, the upper side of the ventilative diaphragm seal 5 is provided with the gold being fixed on external package casing 4 with downside
Belong to screening glass 6, be provided with substantial amounts of said minuscule hole on the metal coating piece 6, it can be fixed on outer packing using Type of Welding
On housing 4, the ventilative diaphragm seal 5 is just sandwiched among two panels metal coating piece 6, because ventilative diaphragm seal 5 compares fragile, appearance
Cracky, the way of centre is so sandwiched using metal coating piece 6 can avoid shadow of the foreign impacts to diaphragm seal 5 of breathing freely
Ring, and a large amount of said minuscule holes are provided with the metal coating piece 6, do not interfere with the disengaging of gas, still keep air permeable effect.
Further, the aperture for a large amount of said minuscule holes being provided with the metal coating piece 6 is that these are thin less than 0.1mm
Small holes are too small, can not be represented on the diagram, and its aperture is smaller, and the protection to diaphragm seal 5 of breathing freely is better, can block big absolutely
Part chaff interference touches ventilative diaphragm seal 5, and modern crafts are also quite ripe to perforate on sheet metal, and aperture is arranged to
0.1mm can be very good to balance processing cost and realize effect.
Further, the ventilative diaphragm seal 5 on the upper side of external package casing 4 is set with supporting metal coating piece 6
Have multigroup, the gas of generation only can be walked up in battery, can be as far as possible inside battery gas is all discharged.
Claims (4)
1. a kind of lithium ion battery that can discharge internal gas, it includes battery plus-negative plate (1), battery core (2), electrolyte (3),
External package casing (4), the battery plus-negative plate (1) are connected in battery core (2) and stretched out from external package casing (4), the electricity
Core (2) is placed in the electrolyte (3) in external package casing (4), it is characterised in that：Wherein described external package casing (4) is using hard
Matter not plastic deformable material, ventilative diaphragm seal (5), the ventilative sealing are provided with external package casing (4) upper side
Film (5) specifically act as that gas can be freed in and out, but can barrier liquid, can use synthesis macromolecule material be made, such as
Polytetrafluoroethylene (PTFE) waterproof is saturating, can also use the materials such as silica gel ventilated membrane.
2. the lithium ion battery according to claim 1 that internal gas can be discharged, it is characterised in that：The ventilative sealing
The upper side of film (5) is provided with the metal coating piece (6) being fixed on external package casing (4), the metal coating with downside
Piece is provided with substantial amounts of said minuscule hole on (6), and it can be fixed on external package casing (4) using Type of Welding, described ventilative close
Sealer (5) is sandwiched among two panels metal coating piece (6).
3. the lithium ion battery according to claim 2 that internal gas can be discharged, it is characterised in that：The metal coating
The aperture for a large amount of said minuscule holes being provided with piece (6) is less than 0.1mm.
4. the lithium ion battery that can discharge internal gas according to Claims 2 or 3, it is characterised in that：The outsourcing
Ventilative diaphragm seal (5) on dress housing (4) upper side is provided with multigroup with supporting metal coating piece (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998401.XU CN207009526U (en) | 2017-08-10 | 2017-08-10 | A kind of lithium ion battery that can discharge internal gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998401.XU CN207009526U (en) | 2017-08-10 | 2017-08-10 | A kind of lithium ion battery that can discharge internal gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207009526U true CN207009526U (en) | 2018-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720998401.XU Active CN207009526U (en) | 2017-08-10 | 2017-08-10 | A kind of lithium ion battery that can discharge internal gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037782A (en) * | 2018-06-26 | 2018-12-18 | 桑顿新能源科技有限公司 | A kind of pad pasting and method for adhering film improving soft bag lithium ionic cell surface folding |
| CN114342174A (en) * | 2019-09-23 | 2022-04-12 | 株式会社Lg新能源 | Method of manufacturing secondary battery and secondary battery |
| CN115000615A (en) * | 2022-07-14 | 2022-09-02 | 株洲宏大高分子材料有限公司 | Breathable explosion-proof membrane and application |
| CN115210947A (en) * | 2020-07-10 | 2022-10-18 | 株式会社Lg新能源 | Secondary battery including gas discharge portion for discharging gas and method of manufacturing secondary battery |
| WO2023077353A1 (en) * | 2021-11-04 | 2023-05-11 | 微宏动力系统（湖州）有限公司 | Soft pack battery |
-
2017
- 2017-08-10 CN CN201720998401.XU patent/CN207009526U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037782A (en) * | 2018-06-26 | 2018-12-18 | 桑顿新能源科技有限公司 | A kind of pad pasting and method for adhering film improving soft bag lithium ionic cell surface folding |
| CN109037782B (en) * | 2018-06-26 | 2021-12-10 | 桑顿新能源科技(长沙)有限公司 | Film for improving surface wrinkles of soft package lithium ion battery and film pasting method |
| CN114342174A (en) * | 2019-09-23 | 2022-04-12 | 株式会社Lg新能源 | Method of manufacturing secondary battery and secondary battery |
| CN114342174B (en) * | 2019-09-23 | 2024-01-19 | 株式会社Lg新能源 | Method for manufacturing secondary battery and secondary battery |
| CN115210947A (en) * | 2020-07-10 | 2022-10-18 | 株式会社Lg新能源 | Secondary battery including gas discharge portion for discharging gas and method of manufacturing secondary battery |
| WO2023077353A1 (en) * | 2021-11-04 | 2023-05-11 | 微宏动力系统（湖州）有限公司 | Soft pack battery |
| CN115000615A (en) * | 2022-07-14 | 2022-09-02 | 株洲宏大高分子材料有限公司 | Breathable explosion-proof membrane and application |
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