CN106410070A - Injection hole structure capable of improving thermal shock test of square lithium ion battery - Google Patents
Injection hole structure capable of improving thermal shock test of square lithium ion battery Download PDFInfo
- Publication number
- CN106410070A CN106410070A CN201611062971.4A CN201611062971A CN106410070A CN 106410070 A CN106410070 A CN 106410070A CN 201611062971 A CN201611062971 A CN 201611062971A CN 106410070 A CN106410070 A CN 106410070A
- Authority
- CN
- China
- Prior art keywords
- injection hole
- battery
- lithium ion
- hole structure
- ion 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 12
- 230000035939 shock Effects 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 18
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 11
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000003792 electrolyte Substances 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract 1
- 239000002861 polymer material Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
-
- 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
Abstract
The invention discloses an injection hole structure capable of improving a thermal shock test of a square lithium ion battery. An injection hole in a cover plate of the battery is sealed by using an LDPE high polymer material, so that the injection hole in the battery is in a closed state at low temperature, and a good sealing effect can be achieved; the injection hole is in an open state at high temperature, gas and heat inside the battery outflow from the injection hole, and the phenomenon of short circuit of the battery is inhibited. According to the injection hole structure, the sealing property of the injection hole can be guaranteed, liquid leakage of the battery is avoided, the problems, such as battery fire and explosion, caused by thermal abuse, of the battery are also solved, the using performance and safety performance of the battery are effectively guaranteed, and the injection hole structure has great production practical significance.
Description
Technical field
The present invention relates to a kind of electrolyte filling hole structure improving rectangular lithium ion battery thermal shock test, belong to lithium ion battery
Technical field.
Background technology
With scientific and technological development, lithium ion battery energy density more and more higher, its safety is also increasingly subject to the pass of people
Note.In practical situation, lithium battery occur heat abuse when inside can produce partial short-circuit, there is the danger of blast on fire, in order to
Prevent lithium battery blast on fire, in industry, metropolis on the cover board or arrange explosion-proof valve or explosion-proof line on housing, and more have passes through
Using high-performance powerful barrier film such as ceramic diaphragm, to prevent battery failure, but or above technology has a concordance poor, knot
Structure is complicated, or manufacturing difficult, with high costs.
Content of the invention
In consideration of it, the present invention is intended to provide a kind of structure be simple and convenient to operate, with low cost, improvement significantly square
Shape lithium ion battery liquid injection pore structure.
The present invention for achieving the above object, employs the following technical solutions：
A kind of LDPE macromolecular material using low melting glass seals to battery liquid-filling hole, and described liquid injection hole seals high score
Sub- material, can occur thermoplasticity change with the change of temperature, so that battery liquid-filling hole becomes closed mode at low temperature, can rise
To good sealing effectiveness；State to be opened under high temperature, inside battery gas and heat spread out of from liquid injection hole, internal short-circuit of battery
Phenomenon is curbed.
Described liquid injection hole 2 is bellmouth.
Described LDPE macromolecular material 3, in -40 ~ 100 DEG C of temperature range Stability Analysis of Structures, has good plasticity；Work as temperature
When degree is more than 100 DEG C, it starts to melt, and plasticity changes.
Due to the utilization of technique scheme, the present invention compared with prior art has advantages below：
The present invention is sealed to battery liquid-filling hole using the LDPE macromolecular material of low melting glass, this LDPE macromolecular material
In -40 ~ 100 DEG C of temperature range Stability Analysis of Structures, good airproof performance it is ensured that the normal use of battery, when more than 100 DEG C, it starts to melt
Melt, plasticity changes, liquid injection hole is opened, can be quickly by the gas producing in inside battery and heat derives outside batteries.Whole
For body, the inventive method controllability is good, and concordance is good and low cost.
Brief description
Fig. 1 is the electrolyte filling hole structure of the embodiment of the present invention（Liquid injection hole does not seal）Schematic diagram；
Fig. 2 is the electrolyte filling hole structure of the embodiment of the present invention（Liquid injection hole seals）Schematic diagram；
Fig. 3 is the application structure of the embodiment of the present invention（Liquid injection hole closed mode）Figure；
Fig. 4 is the application structure of the embodiment of the present invention（Liquid injection hole open mode）Figure；
Wherein, 1 is rectangular lithium ion battery cover plate；2 is liquid injection hole, and 3 is LDPE macromolecular material.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims
Implement with the multitude of different ways covering.
As shown in Fig. 2 improving the electrolyte filling hole structure of rectangular lithium ion battery thermal shock test, using a kind of low melting glass
LDPE macromolecular material 3 liquid injection hole 2 being arranged on cover plate is sealed, described liquid injection hole sealant polymeric materialses 3, meeting
There is thermoplasticity change in the change with temperature, so that battery liquid-filling hole becomes closed mode at low temperature, become to open under high temperature
State.
Further, described liquid injection hole 2 is bellmouth.
As shown in Figure 3, Figure 4, described LDPE macromolecular material 3, in -40 ~ 100 DEG C of temperature range Stability Analysis of Structures, has good
Good plasticity, can play sealing effectiveness very well to liquid injection hole 2, it is to avoid battery leakage is it is ensured that the normal serviceability of battery；Work as temperature
When degree is more than 100 DEG C, the LDPE macromolecular material 3 for sealing liquid injection hole 2 starts to melt, and flow is finally washed open, thus can
By release cell internal pressure and heat in the scope of safety, it is to avoid internal short-circuit of battery leads to blast on fire, ensure life and
The safety of property.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention,
Equivalent structure or equivalent flow conversion that every utilization description of the invention and accompanying drawing content are made, or direct or indirect transport
Used in other related technical fields, it is included within the scope of the present invention.
Claims (3)
1. a kind of electrolyte filling hole structure improving rectangular lithium ion battery thermal shock test it is characterised in that：Using a kind of low melt
The LDPE macromolecular material of temperature（3）To battery liquid-filling hole（2）Sealed, described liquid injection hole（2）Sealant polymeric materialses, meeting
There is thermoplasticity change in the change with temperature, so that battery liquid-filling hole becomes closed mode at low temperature, become to open under high temperature
State.
2. the electrolyte filling hole structure improving rectangular lithium ion battery thermal shock test according to claim 1 it is characterised in that：
Described liquid injection hole（2）For bellmouth.
3. the electrolyte filling hole structure improving rectangular lithium ion battery thermal shock test according to claim 1 it is characterised in that：
Described LDPE macromolecular material（3）In -40 ~ 100 DEG C of temperature range Stability Analysis of Structures, there is good plasticity；When temperature is more than 100
DEG C when, it starts to melt, and plasticity changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062971.4A CN106410070A (en) | 2016-11-28 | 2016-11-28 | Injection hole structure capable of improving thermal shock test of square lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062971.4A CN106410070A (en) | 2016-11-28 | 2016-11-28 | Injection hole structure capable of improving thermal shock test of square lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106410070A true CN106410070A (en) | 2017-02-15 |
Family
ID=58082902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611062971.4A Pending CN106410070A (en) | 2016-11-28 | 2016-11-28 | Injection hole structure capable of improving thermal shock test of square lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106410070A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293656A (en) * | 2017-07-13 | 2017-10-24 | 深圳市科达利实业股份有限公司 | A kind of battery cover plate structure and battery that can be vented at high temperature |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006260975A (en) * | 2005-03-17 | 2006-09-28 | Dainippon Printing Co Ltd | Battery module |
| WO2006133617A1 (en) * | 2005-06-17 | 2006-12-21 | Shenzhen Bak Battery Co., Ltd. | Cover plate assembly for lithium ion battery, battery case and battery using the same |
| CN101079501A (en) * | 2006-05-26 | 2007-11-28 | 重庆戴徕密客电源有限公司 | A secondary liquid lithium ion cell structure |
| JP2015185225A (en) * | 2014-03-20 | 2015-10-22 | 日立マクセル株式会社 | Hermetically sealed battery |
| CN206332061U (en) * | 2016-11-28 | 2017-07-14 | 东莞市振华新能源科技有限公司 | It is a kind of to improve the electrolyte filling hole structure of rectangular lithium ion battery thermal shock test |
-
2016
- 2016-11-28 CN CN201611062971.4A patent/CN106410070A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006260975A (en) * | 2005-03-17 | 2006-09-28 | Dainippon Printing Co Ltd | Battery module |
| WO2006133617A1 (en) * | 2005-06-17 | 2006-12-21 | Shenzhen Bak Battery Co., Ltd. | Cover plate assembly for lithium ion battery, battery case and battery using the same |
| CN101079501A (en) * | 2006-05-26 | 2007-11-28 | 重庆戴徕密客电源有限公司 | A secondary liquid lithium ion cell structure |
| JP2015185225A (en) * | 2014-03-20 | 2015-10-22 | 日立マクセル株式会社 | Hermetically sealed battery |
| CN206332061U (en) * | 2016-11-28 | 2017-07-14 | 东莞市振华新能源科技有限公司 | It is a kind of to improve the electrolyte filling hole structure of rectangular lithium ion battery thermal shock test |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293656A (en) * | 2017-07-13 | 2017-10-24 | 深圳市科达利实业股份有限公司 | A kind of battery cover plate structure and battery that can be vented at high temperature |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204407436U (en) | A kind of lithium ion battery being provided with anti-flatulence automatic liquid supply device | |
| JP2011076865A5 (en) | ||
| CN206332061U (en) | It is a kind of to improve the electrolyte filling hole structure of rectangular lithium ion battery thermal shock test | |
| CN204407410U (en) | A kind of lithium ion battery being provided with the anti-flatulence automatic liquid supply device of pneumatic type | |
| CN105449152B (en) | A kind of lithium ion battery provided with the anti-flatulence automatic liquid supply device of pneumatic type | |
| CN106099175B (en) | A kind of lithium ion battery and preparation method thereof of high temperature resistant high-multiplying power discharge | |
| CN107565182A (en) | The method for obtaining cumulative instruction battery capacity | |
| CN108807833A (en) | A kind of battery liquid-filling structure and battery | |
| CN105449284A (en) | Lithium-ion battery with anti-gas-expansion automatic liquid replenishing device | |
| CN201156555Y (en) | High-safety battery cover board of aluminum shell | |
| CN106410070A (en) | Injection hole structure capable of improving thermal shock test of square lithium ion battery | |
| CN105509922A (en) | Testing method for closed pore temperature of battery diaphragm | |
| CN204809269U (en) | Lithium ion battery's apron explosion -proof equipment | |
| CN208336288U (en) | A kind of battery cap component | |
| CN208570738U (en) | A kind of lithium ion battery that environment-friendly type is explosion-proof | |
| CN103855329A (en) | Special integrated lithium ion battery of stainless steel cylindrical cigarette tube type electronic cigarette | |
| CN207425934U (en) | Cover plate of power battery electrode column sealing device | |
| CN206098514U (en) | Double safety valve power battery top cap and power battery | |
| CN206210949U (en) | A kind of safety lithium ion cell that can be effectively explosion-proof | |
| CN206250230U (en) | A kind of novel battery cover plate | |
| CN206675853U (en) | A kind of battery case of built-in automatic fire extinguisher | |
| CN208970625U (en) | A kind of new type lithium ion battery core liquid injection hole sealing structure | |
| CN205452380U (en) | Fire prevention high magnification electricity core structure | |
| CN205723696U (en) | A kind of battery cover board support | |
| CN200976367Y (en) | Battery cap and battery having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |
|
| WD01 | Invention patent application deemed withdrawn after publication |