CN209804801U - Soft package battery tab and hot press forming device for tab - Google Patents
Soft package battery tab and hot press forming device for tab Download PDFInfo
- Publication number
- CN209804801U CN209804801U CN201920830979.3U CN201920830979U CN209804801U CN 209804801 U CN209804801 U CN 209804801U CN 201920830979 U CN201920830979 U CN 201920830979U CN 209804801 U CN209804801 U CN 209804801U
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- tab
- exposed
- embedded
- hot
- adhesive tape
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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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- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A flexible package battery tab relates to the technical field of lithium batteries and comprises a tab metal belt and a sealing tab adhesive tape, wherein the tab metal belt comprises a thin and wide embedded part and a narrow and thick exposed part, the embedded part and the exposed part are connected through laser transfer welding, the width ratio of the embedded part to the exposed part is 1.5 ~ 3: 1, the thickness ratio of the embedded part to the exposed part is 1/3 ~ 2/3: 1, the sealing tab adhesive tape is arranged at the laser transfer welding connection part between the embedded part and the exposed part to form a packaging part, and a hot press molding device can ensure the reliability of tab adhesive tape connection and the sealing performance of a battery.
Description
Technical Field
The utility model relates to a lithium battery technology field, especially a soft-packing battery tab are used for hot briquetting device of this utmost point ear.
Background
The tab is a core accessory with extremely high safety risk for the lithium ion polymer battery product. For example, the tabs are needed for mobile phone batteries, bluetooth batteries, notebook batteries and the like used in our lives.
At present, in electric appliances, the electric appliances are increasingly pursuing to be lighter and thinner, and the requirements on the capacity and the endurance time of a lithium battery are increasingly longer, so that the thickness of the battery needs to be reduced, and the volume energy density of the battery needs to be improved.
In the prior art, the thickness of a diaphragm, a positive current collector and a negative current collector used in a battery is reduced by 1 micron, namely 1 micron, and the metal strips used in the conventional positive and negative electrode tabs of the flexibly-packaged lithium battery are sealed from the inside to the middle of the battery and then have the same width and thickness from the outside, the thickness of the metal strips of the tabs is generally 80 ~ 100 microns, and the thickness of the metal strips is not reduced so as to ensure the current conduction rate, and the thickness of the tabs is indirectly increased.
Disclosure of Invention
The to-be-solved technical problem of the utility model is not enough to prior art, provide one kind and can reduce lithium cell gross thickness, promote lithium cell volume energy density's soft-packing battery tab.
the utility model discloses still provide a hot briquetting device for this utmost point ear.
The utility model aims to solve the technical problem that the utility model realizes through following technical scheme, a flexible package battery tab, including utmost point ear strap and sealed utmost point ear adhesive tape, its characteristics are that utmost point ear strap include thin and wide embedded portion and narrow and thick exposure portion, embedded portion and exposure portion pass through laser transfer welding and connect, embedded portion and exposure portion width ratio be 1.5 ~ 3: 1, embedded portion and exposure portion thickness ratio be 1/3 ~ 2/3: 1, sealed utmost point ear adhesive tape sets up the laser transfer welding junction between embedded portion and exposure portion and constitutes the encapsulation portion.
The technical problem to be solved by the utility model can be further realized by the following technical scheme that the width of the exposed part is 2 ~ 8mm, and the thickness of the embedded part is 20 ~ 60 mu m.
The to-be-solved technical problem of the utility model can also further realize through following technical scheme, and sealed utmost point ear adhesive tape cladding laser transfer welding junction and outside extension to the portion that exposes, the width that outwards extends to the portion that exposes is 1 ~ 3 mm.
the to-be-solved technical problem of the utility model is realized through following technical scheme, a hot briquetting device for above-mentioned utmost point ear, its characteristics are: the hot-pressing sealing device at least comprises a main hot-pressing sealing mechanism and an auxiliary hot-pressing sealing mechanism, wherein the main hot-pressing sealing mechanism covers the whole packaging part area, and the auxiliary hot-pressing sealing mechanism covers the area, located in the embedded part, of the sealing lug adhesive tape in the laser transfer welding connection position.
Compared with the prior art, the utility model, the utmost point ear strap of this application adopts thin and wide embedded portion and narrow and thick portion that exposes to connect through laser transfer welding to constitute, can reduce the gross thickness of lithium cell like this, promote the volume energy density of lithium cell; the contact area between the embedded part and the positive and negative current collectors is greatly increased, so that internal current is more conveniently led out; the welding area of the embedded part and the positive and negative current collectors is greatly increased, the welding strength is convenient to improve, and the risk of desoldering is greatly reduced.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of an offset side of the exposed portion;
FIG. 3 is a schematic view of a thermoforming apparatus.
Detailed Description
The following further describes embodiments of the present invention in order to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
a flexible package battery tab comprises a tab metal belt and a sealing tab adhesive tape 2, wherein the tab metal belt comprises a thin and wide embedded part 3 and a narrow and thick exposed part 1, the embedded part and the exposed part are connected through laser transfer welding, the width ratio of the embedded part to the exposed part is 1.5 ~ 3: 1, the thickness ratio of the embedded part to the exposed part is 1/3 ~ 2/3: 1, and the sealing tab adhesive tape is arranged at the laser transfer welding connection position between the embedded part and the exposed part to form a packaging part 4.
The welding position of the exposed part and the end part of the embedded part can be adjusted according to the position of the park protection plate, and the exposed part can be arranged in the middle of the end part of the embedded part or arranged at one side.
The width of the exposed part is 2 ~ 8mm, and the thickness of the embedded part is 20 ~ 60 mu m.
The sealing lug adhesive tape wraps the laser transfer welding joint and extends outwards to the exposed part, the width of the sealing lug adhesive tape extending outwards to the exposed part is 1 ~ 3mm, and the width of the sealing lug adhesive tape is generally 4mm ~ 10 mm.
The embedded part of the positive lug adopts a thin and wide aluminum strip:
When the traditional soldering mode is adopted between the lug and the park protection plate, the exposed part can be used for soldering copper tin plating and nickel tin plating besides traditional nickel, the original soldering time which needs about 3 seconds can be reduced to less than 1.5 seconds, the efficiency is greatly improved, and the reliability of soldering is also improved.
Secondly, when the lug and the park protection plate are welded in a laser mode, the exposed part can be made of the cheapest aluminum strip which is made of the same material as the internal material.
The negative electrode tab portion:
in order to reduce cost and improve the reliability of welding with the negative current collector or reduce the difficulty of welding, the metal belt of the embedded part of the negative electrode lug in the application is preferably a copper belt.
Secondly, when the traditional soldering mode is adopted between the lug and the park protection plate, the exposed part can be used for soldering copper tin plating and nickel tin plating besides the traditional nickel, the original soldering time which needs about 3 seconds can be reduced to less than 1.5 seconds, and the soldering reliability is improved while the efficiency is greatly improved.
Thirdly, when the lug and the park protection plate are welded in a laser mode, the exposed part can be made of aluminum or nickel or copper nickel plating materials.
when the lug and the park protection plate are welded in a laser mode, and the exposed parts of the positive and negative lugs are all aluminum strips, the welding reliability can be improved.
In order to prevent the internal short circuit of the lithium battery, strong current instantly generates heat to generate high temperature to cause combustion, a notch is punched on an exposed part 1 ~ 3mm away from a sealing lug adhesive tape of a negative pole lug, and the notch occupies 1/5 ~ 1/3 of the metal bandwidth of the exposed part.
The utility model provides a hot briquetting device for above-mentioned utmost point ear, includes one main hot pressing sealing mechanism 5 and one supplementary hot pressing sealing mechanism 6 at least, main hot pressing sealing mechanism covers whole encapsulation portion region, assist hot pressing sealing mechanism cover in the area that is located the embedded portion of sealed utmost point ear adhesive tape in laser transfer welding junction.
The hot pressing device is adopted to ensure the reliability and firmness of sealing between the tab adhesive tape and the tab metal belt in the top sealing area of the flexible-package lithium battery.
The hot-press sealing can adopt a traditional hot-press process or a high-frequency hot-press process. The main hot-press sealing mechanism and the auxiliary hot-press sealing mechanism both adopt a known tab forming device and are composed of an upper hot-press end socket and a lower hot-press end socket which synchronously move in opposite directions, which is not the invention point of the application and is not described more.
Claims (4)
1. The utility model provides a soft-packing battery tab, includes utmost point ear strap and sealed utmost point ear adhesive tape, its characterized in that:
The tab metal band comprises a thin and wide embedded part and a narrow and thick exposed part, the embedded part and the exposed part are connected through laser transfer welding, the width-to-width ratio of the embedded part to the exposed part is 1.5 ~ 3: 1,
The thickness ratio of the embedded part to the exposed part is 1/3 ~ 2/3: 1, and the sealing tab adhesive tape is arranged at the laser transfer welding joint between the embedded part and the exposed part to form a packaging part.
2. The flexibly packaged battery tab of claim 1 wherein the width of the exposed portion is 2 ~ 8mm and the thickness of the embedded portion is 20 ~ 60 μm.
3. The flexible package battery tab of claim 1, wherein the tab strip covers the laser transfer welding joint and extends outward to the exposed portion, and the width of the tab strip extending outward to the exposed portion is 1 ~ 3 mm.
4. A hot press molding device for the tab of the flexibly packaged battery as claimed in claim 1, wherein: the hot-pressing sealing device at least comprises a main hot-pressing sealing mechanism and an auxiliary hot-pressing sealing mechanism, wherein the main hot-pressing sealing mechanism covers the whole packaging part area, and the auxiliary hot-pressing sealing mechanism covers the area, located in the embedded part, of the sealing lug adhesive tape in the laser transfer welding connection position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920830979.3U CN209804801U (en) | 2019-06-04 | 2019-06-04 | Soft package battery tab and hot press forming device for tab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920830979.3U CN209804801U (en) | 2019-06-04 | 2019-06-04 | Soft package battery tab and hot press forming device for tab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209804801U true CN209804801U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920830979.3U Active CN209804801U (en) | 2019-06-04 | 2019-06-04 | Soft package battery tab and hot press forming device for tab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209804801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190244A (en) * | 2019-06-04 | 2019-08-30 | 连云港德立信电子科技有限公司 | Flexible-packed battery tab and heat pressing forming device for the tab |
-
2019
- 2019-06-04 CN CN201920830979.3U patent/CN209804801U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190244A (en) * | 2019-06-04 | 2019-08-30 | 连云港德立信电子科技有限公司 | Flexible-packed battery tab and heat pressing forming device for the tab |
| CN110190244B (en) * | 2019-06-04 | 2023-11-03 | 安徽晓球新材料科技有限公司 | Flexible package battery tab and hot press forming device for tab |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 222000 Lianyungang economic and Technological Development Zone, Lianyungang, Jiangsu, 8 Patentee after: Jiangsu delixin Electronic Technology Co.,Ltd. Address before: 222000 Lianyungang economic and Technological Development Zone, Lianyungang, Jiangsu, 8 Patentee before: LIANYUNGANG DELIXIN ELECTRONIC TECHNOLOGY Co.,Ltd. |