CN204257714U - Bound edge battery cap - Google Patents
Bound edge battery cap Download PDFInfo
- Publication number
- CN204257714U CN204257714U CN201420549677.6U CN201420549677U CN204257714U CN 204257714 U CN204257714 U CN 204257714U CN 201420549677 U CN201420549677 U CN 201420549677U CN 204257714 U CN204257714 U CN 204257714U
- Authority
- CN
- China
- Prior art keywords
- bound edge
- battery cap
- cap
- top cover
- 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.)
- Expired - Lifetime
Links
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 3
- 229910000679 solder Inorganic materials 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 abstract description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 13
- 238000003466 welding Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 4
- 150000002641 lithium Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- 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
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a kind of cell safety combination cover cap, relate to a kind of bound edge battery cap, belong to battery material technical field.It comprises top cover, bottom, safety-valve, it is characterized in that, the burst disk parcel top cover on bottom, with ultrasonic welding machine or laser-beam welding machine edge sealing, weld forms alloy body, makes battery cap become as a whole.This bound edge lithium battery cap internal resistance is very little, and stay in grade, very reliable, for power lithium battery provides big current well to provide safety guarantee by property.
Description
Technical field
The utility model relates to a kind of cell safety combination cover cap, particularly relates to bound edge lithium battery cap, belongs to battery material technical field.
Background technology
The life appearing as we mankind of battery, amusement and work provide important power supply guarantee.Along with the development of society and the progress of human civilization, primary cell due to the pollution to environment, capacity is low, service time is short etc., and shortcoming will be eliminated gradually, the substitute is the secondary cell of the advantages such as pollution-free, capacity is large, long service life, wherein the distinctive self structure of lithium battery and performance are widely used every field, are exactly representative wherein as notebook computer, portable power source, electric tool etc.Although lithium battery has development for many years, during the high-power instantaneous or long-time electric discharge of lithium battery, the safety problem brought can not be ignored, and easily causes personal safety and property loss.
Security combination block is the most important safety guarantee parts of lithium battery, the performance that the structure of itself and production technology affect lithium battery directly or indirectly and the safety problem brought in high-power instantaneous or long-time electric discharge.Current existing problems mainly contain following 3 points:
1. such as electric tool inherently needs the battery that can provide instantaneous high-current discharge, and traditional processing technology cannot provide the cell safety combination cover cap solving energy instantaneous high-current discharge.
2. the cell safety combination cover cap internal resistance that traditional processing technology is produced generally has tens milliohms even larger, directly limit the big current well property passed through.
3. both enable traditional handicraft make power lithium battery, but when big current leads to battery combination block, due to very large heat can be produced in the action battery of internal resistance, at this moment will affect the fail safe of battery.
Summary of the invention
The utility model is excessive for the internal resistance of existing cell safety combination cover cap, easily causes the hidden danger brought during high-rate battery discharge, develops a kind of stay in grade, reliable, and the cell safety combination cover cap of internal resistance very little (below 1m).
For realizing the utility model object, by battery two kinds of parts wherein: " bound edge burst disk " and " top cover cap " becomes an entirety truly by certain technological means.
Technical solution is as follows:
Described bound edge lithium battery cap comprises top cover, bottom, safety-valve, it is characterized in that, the burst disk parcel top cover on bottom, with ultrasonic welding machine or laser-beam welding machine edge sealing, weld forms alloy body, makes battery cap become as a whole.
Preferred version: weld is two symmetrical solder joints; Weld is ultrasonic wave solder joint or laser solder joint.
The utility model advantage: because bound edge burst disk and top cover cap are the combinations of two kinds of unlike materials, internal resistance has tens milliohms even larger, so be not an entirety truly.With applicable ultrasonic welding machine or laser-beam welding machine by after two kinds of different material welding, weld forms alloy body, battery cap becomes an entirety truly, internal resistance is now very little (below 1m), and stay in grade, very reliable, for power lithium battery provides big current well to provide safety guarantee by property.This security combination of power lithium battery is blocked a shot, when large electric current is instantaneous or for a long time by this security combination block, make large electric current instantaneous or long-time by very good because internal resistance is very little, inside battery would not produce the too high cell safety hidden danger caused of heat formed because block internal resistance is large.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model vertical view.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1
Shown in Fig. 1 ~ Fig. 2, described bound edge lithium battery cap comprises top cover 1, bottom 2, safety-valve, it is characterized in that, burst disk 3 on bottom 2 wraps up top cover 1, at the 0.2mm place, bound edge edge of burst disk, with the solder joint of ultrasonic welding machine or laser-beam welding machine balanced welding two 1mm*2mm, burst disk 1 and top cover 2 are welded together, weld 4 forms alloy body, makes battery cap become as a whole.
Through measuring, this lithium battery cap internal resistance drops to a below milliohm by tens original milliohms, and the stability of internal resistance is very reliable.
The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to the technical solution of the utility model and inventive concept thereof and replace or change, all should be encompassed within protection range of the present utility model.
Claims (1)
1. bound edge battery cap, comprises top cover, bottom, safety-valve, it is characterized in that, the burst disk parcel top cover on bottom, edge sealing, and weld forms alloy body, makes battery cap become as a whole; Weld is two symmetric ultrasonic wave soldering points or laser solder joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549677.6U CN204257714U (en) | 2014-09-24 | 2014-09-24 | Bound edge battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549677.6U CN204257714U (en) | 2014-09-24 | 2014-09-24 | Bound edge battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204257714U true CN204257714U (en) | 2015-04-08 |
Family
ID=52961987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420549677.6U Expired - Lifetime CN204257714U (en) | 2014-09-24 | 2014-09-24 | Bound edge battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204257714U (en) |
-
2014
- 2014-09-24 CN CN201420549677.6U patent/CN204257714U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150408 |
|
| CX01 | Expiry of patent term |