CN106684304A - Multilevel insulation paste lug of power lithium battery - Google Patents
Multilevel insulation paste lug of power lithium battery Download PDFInfo
- Publication number
- CN106684304A CN106684304A CN201710148316.9A CN201710148316A CN106684304A CN 106684304 A CN106684304 A CN 106684304A CN 201710148316 A CN201710148316 A CN 201710148316A CN 106684304 A CN106684304 A CN 106684304A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- lug
- class
- lugs
- dynamic lithium
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 35
- 238000009413 insulation Methods 0.000 title claims abstract description 33
- 229920000642 polymer Polymers 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 239000003292 glue Substances 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 22
- 239000011230 binding agent Substances 0.000 claims description 12
- 229920002521 macromolecule Polymers 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000565 sealant 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a multilevel insulation paste lug of a power lithium battery. The multilevel insulation paste lug comprises a metal conductor and polymer insulating adhesive hermetically adhered on the metal conductor, two or more levels of polymer insulating adhesive are hermetically adhered on the metal conductor in parallel, and two side edges of the metal conductor are arranged in such shapes that the thicknesses gradually become smaller from inside to outside. The multilevel insulation paste lug can improve the security of the lug of the lithium battery and reduce the invalidity probability of the lug of the lithium battery.
Description
Technical field
The present invention relates to lithium battery pole ear, more particularly, it relates to a kind of many Insulating Binders of Class lugs of dynamic lithium battery.
Background technology
Present electric automobile (containing passenger car, bus) high speed development at home, it is special that its security is proposed
Require, because the big multiplex lithium battery of electric automobile provides power, and lithium battery pole ear (or lead) is the core of lithium battery
Part, and be also that, at present in the part for being easiest to fail with electric automobile power section, the failure of the part will make electric automobile
Run out of steam, security incident will be caused when of serious failure.
At present, the structure of common traditional power lithium battery pole ear (or lead) is as shown in figure 1, including the He of metallic conductor 1
Polymer insulation glue 2, wherein, the fabric width of metallic conductor 1 is in more than 30mm, and thickness is in more than 0.2mm, polymer insulation glue 2
Fabric width is in more than 7mm, and thickness is in more than 0.1mm, and polymer insulation glue 2 adopts solid-state strip material, 140 degree of -160 degree of Jing
Heating (commonly referred to sealing) bonding with metallic conductor 1.As shown in Figures 2 to 4, because traditional power lithium battery pole ear (or draws
Line) its bonding interface for single-stage sealing bonding interface, most weak link is exactly lug or lead after the encapsulation of whole battery core
Sealing bonding interface (when battery core is produced, positive electrode collector, negative electrode collector, positive and negative electrode collector barrier film, positive pole ear, negative pole
Lug connects into an entirety, then uses laminated aluminum film bag hermetic package, lug one end in laminated aluminum film bag with pole collection
Electric body is coupled, and one end is outer with external client link in laminated aluminum film bag, and polymer insulation glue and the laminated aluminum film bag of lug melt
Connect to form a complete laminated aluminum film bag seal.Finally electrolyte is filled in laminated aluminum film bag, if packaging
Poor sealing just occurs that electrolyte is leaked, battery core failure, that is, battery is scrapped.Complete laminated aluminum film bag seal its
His position is all that same nonmetallic materials carry out welding, and for example same entirety of welding effect, only lug are metal and non-gold
The welding of category, welding effect far away from same material, therefore, lug position is most weak), the sealing bonding interface once fail, then
Whole lithium battery failure, car load will run out of steam.Because electric automobile is related to personal safety, concerned countries standard and car load
The service life of factory's customer requirement battery must reach more than 8 years, therefore, the reliability of lithium battery pole ear (or lead), is whole
The key link of car reliability.However, due to current traditional power lithium battery pole ear (or lead) structure easily, it is commonly used
Failure conditions just occur less than 3-5, uses far from the battery for reaching concerned countries standard and car load factory customer requirement
In the life-span, accordingly, it would be desirable to a kind of structure is more firm, it is difficult the dynamic lithium battery lug (or lead) for failing.
The content of the invention
For drawbacks described above present in prior art, it is an object of the invention to provide a kind of many class B insulations of dynamic lithium battery
Glue lug, it is possible to increase the security of lithium battery pole ear, reduces the probability of lithium battery pole ear failure.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of many Insulating Binders of Class lugs of dynamic lithium battery, including metallic conductor and sealing be adhered to the height on metallic conductor
Molecule insulating cement, the quantity that the polymer insulation glue is arranged is that more than two-stage or two-stage side by side sealing is adhered to metallic conductor
On, the side of the metallic conductor two is respectively provided with gradient thickness thin shape from inside to outside.
The overall width of described polymer insulation glue is identical with dynamic lithium battery package dimension.
The section of the described thin shape of gradient thickness from inside to outside is in isosceles-trapezium-shaped.
The angle of the described waist edges such as two is 15-35 degree.
Gap between described polymer insulation glue is 0.3-0.5mm.
The width all same of described polymer insulation glue.
The width of every grade of described polymer insulation glue is differed.
In above-mentioned technical scheme, a kind of many Insulating Binders of Class lugs of dynamic lithium battery provided by the present invention also have
Some beneficial effect below：
1. the present invention improves level layer impact strength；
2. the present invention improves single-stage intensity against corrosion；
3. if the one of single-stage of the present invention has a point failure, stress concentration effect occurs, finally fails,
But it does not affect the sealing of other grade of sealant；
4. if single-stage of the invention fails, but battery core will not leakage；
5. the present invention is low to interface requirements, and level is more, then security is higher；
6. the present invention is substantially reduced to the possibility that battery core occurs leakage failure for more than 10 years.
Description of the drawings
Fig. 1 is the structural representation of existing lithium battery pole ear；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the enlarged diagram at a positions in Fig. 2；
Fig. 4 is the enlarged diagram at b positions in Fig. 2；
Fig. 5 is the structural representation of the present invention；
Fig. 6 is the top view of Fig. 5；
Fig. 7 is the enlarged diagram at c positions in Fig. 6；
Fig. 8 is the enlarged diagram at d positions in Fig. 6；
Specific embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
Incorporated by reference to shown in Fig. 5 and Fig. 6, a kind of many Insulating Binders of Class lugs of dynamic lithium battery provided by the present invention, including gold
Category conductor 3 and sealing are adhered to polymer insulation glue 4 on metallic conductor 3, and above-mentioned for prior art part, here is just no longer
Repeat.Unlike the prior art, the setting of polymer insulation glue 4 is adhered to metal and leads in more than two-stage or two-stage sealing
On body 3, and the width of polymer insulation glue 4 at different levels can be arranged to all same, be generally set between 2.25-6mm, it is also possible to
The width of polymer insulation glue 4 at different levels is arranged to into difference, but need to ensure to meet the total of the multistage addition of polymer insulation glue 4 of client
Requirement when width is encapsulated, for example, the overall width (total fabric width) of the polymer insulation glue 4 of multi-stage sealed bonding should be original with client
The width (fabric width) of the polymer insulation glue 2 of the single-stage sealing bonding of design is calculated by multistage distribution and keeps constant, with full
The requirement of sufficient client's package dimension.Gap uniformity interval setting between the polymer insulation glue 4 of sealing bondings at different levels, spacing sets
Put between 0.3-0.5mm, make client when Top sealing (closedtop) are encapsulated by the 1st grade of polymer insulation glue 4 to last
Level polymer insulation glue 4 is required for covering.
Incorporated by reference to shown in Fig. 7 and Fig. 8, then two sides of the metallic conductor 3 are respectively provided with gradient thickness from inside to outside
Thin shape, the section of the described thin shape of gradient thickness from inside to outside is in isosceles-trapezium-shaped, so as to be beneficial to, in encapsulation, discharge
The bubble at 3 liang of sides of metallic conductor tilt stage position, is also beneficial to and curtain coating, heap after every grade of polymer insulation glue 4 is melted
Product, sealing, improve the thickness at the c1 and d1 positions of every grade of polymer insulation glue 4, so as to greatly improve the peace of battery core again
Full performance.
Preferably, the angle of the described waist edges such as two is 15-35 degree, and the bond length of the isosceles trapezoid is 0.1-
0.15mm, can be such that polymer insulation glue 4 preferably melts.
The present invention is improved to the structure of lug (or lead), will the sealing means of single-stage polymer insulation glue be changed to
The sealing means of multistage polymer insulation glue, according to dimensional requirement of the client to polymer insulation glue total height, by traditional list
Level polymer insulation glue sealing bonding interface is arranged, and is changed to two-stage or two-stage above polymer insulation glue sealing bonding interface sets
Put.By following 2 contrast tables to illustrate existing dynamic lithium battery lug (or lead) with dynamic lithium battery pole of the invention
The difference of structure and security between ear (or lead), wherein, table 1 is illustrated for Structure Comparison, and table 2 is security comparative illustration.
Table 1
Table 2
In sum, the present invention is improved to the structure of lug, by the sealing side of original single-stage polymer insulating film
Formula is improved to the sealing means of two-stage or two-stage above polymer insulating film, not only solves defect present in prior art,
Improve the security of dynamic lithium battery again simultaneously.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification all will fall in the range of claims of the present invention.
Claims (7)
1. a kind of many Insulating Binders of Class lugs of dynamic lithium battery, including metallic conductor and sealing are adhered to the high score on metallic conductor
Insulating sublayer glue, it is characterised in that the quantity that the polymer insulation glue is arranged is that more than two-stage or two-stage, sealing side by side is adhered to
On metallic conductor, the side of the metallic conductor two is respectively provided with gradient thickness thin shape from inside to outside.
2. many Insulating Binders of Class lugs of a kind of dynamic lithium battery as claimed in claim 1, it is characterised in that described macromolecule is exhausted
The overall width of edge glue is identical with dynamic lithium battery package dimension.
3. many Insulating Binders of Class lugs of a kind of dynamic lithium battery as claimed in claim 1, it is characterised in that it is described from inside to outside
The section of gradient thickness thin shape is in isosceles-trapezium-shaped.
4. a kind of many Insulating Binders of Class lugs of dynamic lithium battery as claimed in claim 3, it is characterised in that two described isosceles
The angle on side is 15-35 degree.
5. a kind of many Insulating Binders of Class lugs of dynamic lithium battery as claimed in claim 1, it is characterised in that described high scores at different levels
Gap between insulating sublayer glue is 0.3-0.5mm.
6. a kind of many Insulating Binders of Class lugs of dynamic lithium battery as claimed in claim 5, it is characterised in that described high scores at different levels
The width all same of insulating sublayer glue.
7. a kind of many Insulating Binders of Class lugs of dynamic lithium battery as claimed in claim 5, it is characterised in that described high scores at different levels
The width of insulating sublayer glue is differed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710148316.9A CN106684304A (en) | 2017-03-14 | 2017-03-14 | Multilevel insulation paste lug of power lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710148316.9A CN106684304A (en) | 2017-03-14 | 2017-03-14 | Multilevel insulation paste lug of power lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106684304A true CN106684304A (en) | 2017-05-17 |
Family
ID=58828736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710148316.9A Pending CN106684304A (en) | 2017-03-14 | 2017-03-14 | Multilevel insulation paste lug of power lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106684304A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782918A (en) * | 2021-08-20 | 2021-12-10 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754220Y (en) * | 2004-12-08 | 2006-01-25 | 惠州Tcl金能电池有限公司 | Cell pole ear |
| CN202142602U (en) * | 2011-07-20 | 2012-02-08 | 范能文 | Thick lug of soft package lithium battery |
| CN102354735A (en) * | 2011-08-29 | 2012-02-15 | 能一郎科技股份有限公司 | Method for preparing aluminum, nickel and copper tabs for flexibly packaged or polymer lithium ion power battery |
| CN202178298U (en) * | 2011-07-08 | 2012-03-28 | 东莞市西特新能源科技有限公司 | Secondary packaged battery core |
| CN203119019U (en) * | 2012-12-06 | 2013-08-07 | 惠州市恒泰科技有限公司 | Novel Li-ion polymer battery pole piece and pole ear structure |
| CN203690396U (en) * | 2014-01-14 | 2014-07-02 | 浙江超威创元实业有限公司 | Tab of flexibly-packaged lithium ion battery |
| CN105070873A (en) * | 2015-07-20 | 2015-11-18 | 无锡市百事杰金属制品科技有限公司 | Lithium-ion power battery tab |
| CN105489925A (en) * | 2015-11-24 | 2016-04-13 | 山东精工电子科技有限公司 | Novel flexibly-packaged lithium ion battery and preparation method therefor |
| CN205609654U (en) * | 2016-04-21 | 2016-09-28 | 格远电子科技（上海）有限公司 | EV lithium cell edging utmost point ear |
| CN206574786U (en) * | 2017-03-14 | 2017-10-20 | 格远电子科技（上海）有限公司 | A kind of many Insulating Binders of Class lugs of dynamic lithium battery |
-
2017
- 2017-03-14 CN CN201710148316.9A patent/CN106684304A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2754220Y (en) * | 2004-12-08 | 2006-01-25 | 惠州Tcl金能电池有限公司 | Cell pole ear |
| CN202178298U (en) * | 2011-07-08 | 2012-03-28 | 东莞市西特新能源科技有限公司 | Secondary packaged battery core |
| CN202142602U (en) * | 2011-07-20 | 2012-02-08 | 范能文 | Thick lug of soft package lithium battery |
| CN102354735A (en) * | 2011-08-29 | 2012-02-15 | 能一郎科技股份有限公司 | Method for preparing aluminum, nickel and copper tabs for flexibly packaged or polymer lithium ion power battery |
| CN203119019U (en) * | 2012-12-06 | 2013-08-07 | 惠州市恒泰科技有限公司 | Novel Li-ion polymer battery pole piece and pole ear structure |
| CN203690396U (en) * | 2014-01-14 | 2014-07-02 | 浙江超威创元实业有限公司 | Tab of flexibly-packaged lithium ion battery |
| CN105070873A (en) * | 2015-07-20 | 2015-11-18 | 无锡市百事杰金属制品科技有限公司 | Lithium-ion power battery tab |
| CN105489925A (en) * | 2015-11-24 | 2016-04-13 | 山东精工电子科技有限公司 | Novel flexibly-packaged lithium ion battery and preparation method therefor |
| CN205609654U (en) * | 2016-04-21 | 2016-09-28 | 格远电子科技（上海）有限公司 | EV lithium cell edging utmost point ear |
| CN206574786U (en) * | 2017-03-14 | 2017-10-20 | 格远电子科技（上海）有限公司 | A kind of many Insulating Binders of Class lugs of dynamic lithium battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782918A (en) * | 2021-08-20 | 2021-12-10 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| CN113782918B (en) * | 2021-08-20 | 2024-04-09 | 宁德新能源科技有限公司 | Battery core and electricity utilization device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170517 |