CN105206765A - Multi-tab process welding cover plate for lithium battery - Google Patents
Multi-tab process welding cover plate for lithium battery Download PDFInfo
- Publication number
- CN105206765A CN105206765A CN201510505791.8A CN201510505791A CN105206765A CN 105206765 A CN105206765 A CN 105206765A CN 201510505791 A CN201510505791 A CN 201510505791A CN 105206765 A CN105206765 A CN 105206765A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- pfa
- explosion
- proof valve
- lithium 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
- 238000000034 method Methods 0.000 title claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 title abstract description 8
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 title abstract 2
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 210000005069 ears Anatomy 0.000 claims description 15
- 230000005405 multipole Effects 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010011906 Death Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 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
- H01M50/50—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
-
- 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
- H01M50/147—Lids or covers
-
- 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)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a multi-tab process welding cover plate of a lithium battery, which comprises a cover plate, a tab connecting piece, a PFA gasket, a pressing plate, a stop pressing piece, an explosion-proof valve and a liquid injection port, wherein the tab connecting piece is an L-shaped connecting piece, the tab connecting piece is of a foldable structure, the cover plate is connected with the tab connecting piece, the PFA gasket is connected with a positive electrode and a negative electrode, the PFA gasket crosses over the explosion-proof valve, the pressing plate presses the PFA gasket, and the stop pressing piece is arranged on the lower side of the explosion-proof valve; the locking pressing sheet is located on the lower side of the cover plate explosion-proof valve, the locking pressing sheet prevents the pole group in the shell from vibrating up and down, and plays an internal protection role in the explosion-proof valve, and the locking pressing sheet isolates the positive pole lug and the negative pole lug to prevent internal short circuit.
Description
Technical field
The present invention relates to field of lithium ion battery, specifically a kind of lithium battery multi pole ears technique welded cover plate.
Background technology
Because the energy of modern society reduces day by day, atmospheric environment is day by day severe, the demand of people to the energy is more and more higher, and lithium ion battery is not only very little to environmental hazard in manufacturing process, and end-of-life also has very high recovery value and can not to environment after a procedure.This green novel energy source not only can replace traditional lead-acid battery, and fuel oil can also be replaced to become the power resources of automobile use.
The use of ion battery on power vehicle reaches its maturity, and annual demand is also growing with each passing day, and requires more and more higher for the production and processing of battery and the packaging technology of battery.Current domestic lithium battery technology adopts multi pole ears technique to get more and more, but in the connection of pole group and cover plate in multi pole ears technique, live welding due to pole and larger pressure and higher temperature are produced to lug position, damage is caused to welding position, at processing link afterwards likely because local stress damage causes tab welding position to rupture, thus affect performance and the rate of finished products of battery.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of lithium battery multi pole ears technique welded cover plate, reliable, practical, be easy to operation.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of lithium battery multi pole ears technique welded cover plate, comprise cover plate, lug brace, PFA pad, pressing plate, stop compressing tablet, explosion-proof valve and liquid injection port, described lug brace is L shape brace, described lug brace is folding structure, described cover plate is connected with lug brace, described PFA pad connects both positive and negative polarity, described PFA pad strides across explosion-proof valve, PFA pad pushed down by described pressing plate, and described stop compressing tablet is arranged on the downside of explosion-proof valve.
Preferably, described PFA spacer thickness is not less than 1.5mm.
Preferably, after PFA pad pushed down by described pressing plate, PFA pad exposes and is greater than 1mm.
Further, hollow out in the middle of described stop compressing tablet.
Preferably, described lug brace material is the good metal of conduction.
Preferably, described lug brace material is copper or nickel.
Beneficial effect of the present invention: lug brace is L-type brace, material can be the good metal of the conduction such as copper, nickel.The afterbody of lug brace can fold, and after folding, lug brace two-sidedly can wrap the multi pole ears of welding pole group, can protect lug rocking and causing the phenomenon of fracture in assembling process; Stop compressing tablet is positioned at the downside of cover plate explosion-proof valve, and stop compressing tablet should prevent enclosure interior pole group vertical tremor, also plays internal protection effect to explosion-proof valve, and isolated positive and negative lug, prevent internal short-circuit.The design of middle hollow out taked by stop compressing tablet, not only can reduce weight, and explosion-proof valve also can be made to play a role.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention.
Fig. 2 is another structural representation of the present invention.
Fig. 3 is bottom schematic view of the present invention.
In figure, 1-liquid injection port, 2-PFA pad, 3-lug brace, 4-pressing plate, 5-stop compressing tablet, 6-explosion-proof valve, 7-cover plate.
Embodiment
Embodiments of the present invention is described in detail below.
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of lithium battery multi pole ears technique welded cover plate, comprise cover plate 7, lug brace 3, PFA pad 2, pressing plate 4, stop compressing tablet 5, explosion-proof valve 6 and liquid injection port 1, described lug brace 3 is L shape brace, described lug brace 3 is folding structure, after folding, lug brace 3 two-sidedly can wrap the multi pole ears of welding pole group, lug rocking and causing the phenomenon of fracture in assembling process can be protected, described cover plate 7 is connected with lug brace 3, described PFA pad 2 connects both positive and negative polarity, described PFA pad 2 strides across explosion-proof valve 6, the surface of explosion-proof valve 6 is played a protective role, to prevent in the transportation of battery core, damage is caused to the apparent of battery anti-explosion valve 6, PFA pad 2 pushed down by described pressing plate 4, described stop compressing tablet 5 is arranged on the downside of explosion-proof valve 6.
PFA pad 2 pushed down by pressing plate 4, ensures that periphery P FA pad 2 exposes and is greater than 1mm, reach seal request.
Stop compressing tablet 5 is positioned at the downside of explosion-proof valve 6, and stop compressing tablet 5 should prevent enclosure interior pole group vertical tremor, also plays internal protection effect to explosion-proof valve 6, and isolated positive and negative lug, prevent internal short-circuit.The design of middle hollow out taked by stop compressing tablet 5, not only can reduce weight, and explosion-proof valve 6 also can be made to play a role.
Described lug brace 3 material is the good metal of the conduction such as copper or nickel.
In welding process, push down lug by folding for lug brace 3, the relevant devices such as artificial, machine, mould can be adopted.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within claims of the present invention.
Claims (6)
1. a lithium battery multi pole ears technique welded cover plate, it is characterized in that: comprise cover plate, lug brace, PFA pad, pressing plate, stop compressing tablet, explosion-proof valve and liquid injection port, described lug brace is L shape brace, described lug brace is folding structure, described cover plate is connected with lug brace, and described PFA pad connects both positive and negative polarity, and described PFA pad strides across explosion-proof valve, PFA pad pushed down by described pressing plate, and described stop compressing tablet is arranged on the downside of explosion-proof valve.
2. a kind of lithium battery multi pole ears technique welded cover plate according to claim 1, is characterized in that: described PFA spacer thickness is not less than 1.5mm.
3. a kind of lithium battery multi pole ears technique welded cover plate according to claim 1, it is characterized in that: after PFA pad pushed down by described pressing plate, PFA pad exposes and is greater than 1mm.
4. a kind of lithium battery multi pole ears technique welded cover plate according to claim 1, is characterized in that: hollow out in the middle of described stop compressing tablet.
5. a kind of lithium battery multi pole ears technique welded cover plate according to claim 1, is characterized in that: described lug brace material is the good metal of conduction.
6. a kind of lithium battery multi pole ears technique welded cover plate according to claim 5, is characterized in that: described lug brace material is copper or nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510505791.8A CN105206765A (en) | 2015-08-17 | 2015-08-17 | Multi-tab process welding cover plate for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510505791.8A CN105206765A (en) | 2015-08-17 | 2015-08-17 | Multi-tab process welding cover plate for lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105206765A true CN105206765A (en) | 2015-12-30 |
Family
ID=54954312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510505791.8A Pending CN105206765A (en) | 2015-08-17 | 2015-08-17 | Multi-tab process welding cover plate for lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105206765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316957A (en) * | 2017-06-22 | 2017-11-03 | 合肥国轩高科动力能源有限公司 | Integral type apron and adopt secondary battery of above-mentioned apron |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005317324A (en) * | 2004-04-28 | 2005-11-10 | Japan Storage Battery Co Ltd | Battery |
| CN102244209A (en) * | 2011-06-09 | 2011-11-16 | 吉安市优特利科技有限公司 | Square lithium ion power battery |
| CN202333024U (en) * | 2011-11-01 | 2012-07-11 | 东莞乔登节能科技有限公司 | Cover plate assembly with reversed T-shaped pole group |
| CN203690364U (en) * | 2013-12-30 | 2014-07-02 | 合肥国轩高科动力能源股份公司 | Battery cover plate component |
| US20150147605A1 (en) * | 2013-11-27 | 2015-05-28 | Samsung Sdi Co., Ltd. | Secondary battery |
-
2015
- 2015-08-17 CN CN201510505791.8A patent/CN105206765A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005317324A (en) * | 2004-04-28 | 2005-11-10 | Japan Storage Battery Co Ltd | Battery |
| CN102244209A (en) * | 2011-06-09 | 2011-11-16 | 吉安市优特利科技有限公司 | Square lithium ion power battery |
| CN202333024U (en) * | 2011-11-01 | 2012-07-11 | 东莞乔登节能科技有限公司 | Cover plate assembly with reversed T-shaped pole group |
| US20150147605A1 (en) * | 2013-11-27 | 2015-05-28 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN203690364U (en) * | 2013-12-30 | 2014-07-02 | 合肥国轩高科动力能源股份公司 | Battery cover plate component |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316957A (en) * | 2017-06-22 | 2017-11-03 | 合肥国轩高科动力能源有限公司 | Integral type apron and adopt secondary battery of above-mentioned apron |
| CN107316957B (en) * | 2017-06-22 | 2020-03-20 | 合肥国轩高科动力能源有限公司 | Integral type apron and adopt secondary battery of above-mentioned apron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
|
| RJ01 | Rejection of invention patent application after publication |