CN201536119U - Novel lithium cell cover board - Google Patents
Novel lithium cell cover board Download PDFInfo
- Publication number
- CN201536119U CN201536119U CN2009202606877U CN200920260687U CN201536119U CN 201536119 U CN201536119 U CN 201536119U CN 2009202606877 U CN2009202606877 U CN 2009202606877U CN 200920260687 U CN200920260687 U CN 200920260687U CN 201536119 U CN201536119 U CN 201536119U
- Authority
- CN
- China
- Prior art keywords
- explosion
- top cover
- annular edge
- salient point
- proof diaphragm
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 25
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 230000010485 coping Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 5
- 238000004880 explosion Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
Images
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
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The utility model relates to a lithium cell cover board, in particular to a novel lithium cell cover board with internal resistance less than 0.3 milliohms. The novel lithium cell cover board comprises a metal top cover which is arranged on the top portion of an electric core casing, wherein the top cover comprises a horizontally-arranged annular edge and a projection portion which is upwards bulged and formed with the annular edge in one piece, the lower portion of the top cover is provided with an explosion-proof membrane sheet which is equipped with a horizontally-arranged annular edge corresponding to the annular edge of the top cover, and a recess portion is formed on the explosion-proof membrane sheet at a position corresponding to the projection portion of the top cover, the bottom of the recess portion takes the shape of a plane surface, a nickel ring is positioned between the top cover and the inner cavity of the explosion-proof membrane sheet which is an aluminum membrane sheet, a downward projection point is arranged on the lower side of the nickel ring, an upward projection point is arranged on the upper side of the rim of the top cover, the annular edge of the explosion-proof membrane sheet tightly presses the annular edge and the nickel ring and then enwraps the annular edge and the nickel ring, the projection point of the nickel ring is downwards pressed in the inner cavity of the annular edge and the nickel ring, and the projection point of the top cover is upwards pressed in the inner cavity of the annular edge and the nickel ring. The novel lithium cell cover board has the beneficial effect that the internal resistance can be even smaller and generally achieve less than 0.3 milliohms.
Description
Technical field
The utility model relates to a kind of lithium battery cover plate, and referring more particularly to a kind of interior resistance is the following novel lithium battery cover plate of 0.3 milliohm.
Background technology
In recent years, because electronic equipment miniaturization day by day, lighting and portable bands such as video camera, electric tool, notebook computer, electric bicycle, and also develop to high power capacity, high security and lighting direction as the driving power that these electronic equipments are used.The totally-enclosed battery of lithium ion box hat is with characteristics such as the high power capacity of its electric core and part throttle characteristics excellences, and obtains increasingly extensive application.
Lithium-ion electric core is the accumulate parts of lithium battery, and it can produce abnormal gas along with the inside battery chemical reaction because of battery charger failure and factor such as too rechargeable in use, causes cell internal pressure excessive, thus generation battery explosion accident.Its consequence is damage equipment then gently, and is heavy then injure the user.Therefore, when cell internal pressure is excessive, for preventing battery explosion, must be with the gas leak in the battery.Its safeguard procedures normally are provided with protective device on battery cover.Existing protective device internal resistance is general common to be 8 milliohms, and present production technology can be accomplished below 5 milliohms.Along with the continual renovation of product, more and more higher to the requirement of high-performance charged lithium cells now, therefore also more and more higher to the interior resistance requirement of lithium battery cover plate, many product requirements reach the following even littler internal resistance of 1 milliohm.Therefore need a kind of interior little lithium battery cover plate of resistance now badly.
Based on above-mentioned the deficiencies in the prior art part, the inventor has developed the utility model " a kind of novel lithium battery cover plate ".
The utility model content
The utility model at above-mentioned the deficiencies in the prior art technical problem to be solved is: a kind of novel lithium battery cover plate is provided.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of novel lithium battery cover plate comprises a casting coping, and it is located at the top of electric core housing; Top cover comprises horizontally disposed annular edge edge and the integrally formed with it lug boss that raises up, the top cover bottom is provided with explosion-proof diaphragm, it has annular edge with described top cover along corresponding horizontally disposed annular edge edge, form lower concave part at the position relative with the lug boss of described top cover, the bottom of this lower concave part is the plane, so that contact with vent panel; Be provided with the nickel ring between described top cover downside and the explosion-proof diaphragm inner chamber, explosion-proof diaphragm is the aluminium diaphragm, be provided with in the downside of nickel ring and make explosion-proof diaphragm inner chamber and nickel loops close salient point downwards, top cover edge upside is provided with and combines more upwards salient point with explosion-proof diaphragm inner chamber, the annular edge of explosion-proof diaphragm encases after annular edge edge and nickel ring are compressed, the salient point of nickel ring is pressed in explosion-proof diaphragm inner chamber downwards, and the salient point of top cover upwards compresses mutually with explosion-proof diaphragm inner chamber.
The cross sectional shape of described top cover salient point and nickel ring salient point is respectively triangle or circular or other geometries.
The quantity of described top cover salient point and nickel ring salient point is respectively one or more.Generally can be set to 3 or 4.
The described explosion-proof diaphragm outside is arranged with ring-type insulated enclosure circle, is provided with vent panel in ring-type insulated enclosure circle bottom side
The beneficial effect of a kind of novel lithium battery cover plate of the utility model is:
Overcome the weak point of prior art to big electric current lithium battery cover plate high request, the utility model application of nickel ring, at nickel ring downside salient point is set, salient point is pressed in the Aluminum cover upside, because aluminium is the soft metal, therefore can presses embedding Aluminum cover surface by salient point, thereby make it in conjunction with tightr, interior resistance can be littler, generally reaches below 0.3 milliohm.
Can produce heat because therefore internal resistance exists in charging, below internal resistance 0.3 milliohm of the present utility model, therefore the heat that produces than resistance in the existing lithium battery is littler, so also safer.
The utlity model has that simple in structure, interior resistance is little, cost of manufacture is low, can cut off the power supply safely and characteristics such as pressure release, can be effectively and prevent battery explosion reliably.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is an overall structure decomposing schematic representation of the present utility model;
Fig. 2 is the nickel ring opposite side structural representation among Fig. 1;
Fig. 3 is the combining structure generalized section of explosion-proof diaphragm, nickel ring and top cover.
Embodiment
Below in conjunction with embodiment a kind of novel lithium battery cover plate that the technical program provides is narrated.
The utility model is to implement like this:
In Fig. 1 to Fig. 3, a kind of novel lithium battery cover plate comprises a casting coping 20, and it is located at the top of electric core housing; Top cover 20 comprises that horizontally disposed annular edge is along 21 and the integrally formed with it lug boss that raises up 22, top cover 20 bottoms are provided with explosion-proof diaphragm 30, the thin rounded flakes that described explosion-proof diaphragm 30 is made for aluminium, it have annular edge with described top cover 20 along 21 corresponding horizontally disposed annular edge along 33, form lower concave part 31 at the position relative with the lug boss 22 of described top cover, the bottom of this lower concave part is the plane, so that contact with vent panel 40; Be provided with nickel ring 50 between top cover 20 downsides and explosion-proof diaphragm 30 inner chambers, explosion-proof diaphragm 30 is the aluminium diaphragm, be provided with in the downside of nickel ring 50 and make explosion-proof diaphragm 30 inner chambers combine salient point 51 downwards with nickel ring 50, top cover 20 edge upsides are provided with and combine more upwards salient point 23 with explosion-proof diaphragm 30 inner chambers, the annular edge of explosion-proof diaphragm 30 along 33 with annular edge along 21 and nickel ring 50 encase after compressing, salient point 51 is pressed in explosion-proof diaphragm 30 inner chambers downwards, and the salient point 23 of top cover 20 upwards compresses mutually with explosion-proof diaphragm 30 inner chambers.Above-mentioned top cover 20, explosion-proof diaphragm 30, vent panel 40 form the positive pole of battery, and electric core housing then forms the negative pole of battery.In Fig. 2, the downside of nickel ring 50 is provided with downward salient point 51.
In Fig. 1, casting coping 20 and nickel ring 50 are packed into behind the explosion-proof diaphragm 30, the annular edge of explosion-proof diaphragm 30 along 33 with annular edge along 21 and nickel ring 50 compress after encasing, salient point 51 is pressed in explosion-proof diaphragm 30 inner chambers downwards, the salient point 23 of top cover 20 upwards compresses mutually with explosion-proof diaphragm 30 inner chambers.And then behind the ring-type insulated enclosure circle 60 of packing into ring-type insulated enclosure circle 60 edges are compressed.
In the present embodiment, top cover 20 upsides are provided with and make top cover 20 combine 3 salient points 23 more closely with explosion-proof diaphragm 30 inner chambers.Explosion-proof diaphragm 30 outsides are arranged with ring-type insulated enclosure circle 60, are provided with vent panel 40 in ring-type insulated enclosure circle 60 bottom sides.On the upper surface of explosion-proof diaphragm 30, be positioned at its annular edge and be provided with annular groove 32 with the joint portion of lower concave part 31 along 33.
The quantity of salient point 51 salient points 23 also can be other varying numbers and shape in addition.
The above, it only is a kind of preferred embodiment of a kind of novel lithium battery cover plate of the utility model, be not that technical scope of the present utility model is imposed any restrictions, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model above any trickle modification, equivalent variations and modification that embodiment did.
Claims (4)
1. a novel lithium battery cover plate comprises a casting coping (20), and it is located at the top of electric core housing; Top cover (20) comprises that horizontally disposed annular edge is along (21) and the integrally formed with it lug boss that raises up (22), top cover (20) bottom is provided with explosion-proof diaphragm (30), it has the corresponding horizontally disposed annular edge edge, annular edge edge (21) (33) with described top cover (20), form lower concave part (31) at the position relative with the lug boss (22) of described top cover, the bottom of this lower concave part is the plane, so that contact with vent panel (40); It is characterized in that: be provided with nickel ring (50) between described top cover (20) downside and explosion-proof diaphragm (30) inner chamber, explosion-proof diaphragm (30) is the aluminium diaphragm, be provided with in the downside of nickel ring (50) and make explosion-proof diaphragm (30) inner chamber combine salient point (51) downwards with nickel ring (50), top cover (20) edge upside is provided with and combines more upwards salient point (23) with explosion-proof diaphragm (30) inner chamber, the annular edge of explosion-proof diaphragm (30) encases annular edge along (33) after (21) and nickel ring (50) compress, salient point (51) is pressed in explosion-proof diaphragm (30) inner chamber downwards, and the salient point (23) of top cover (20) upwards compresses mutually with explosion-proof diaphragm (30) inner chamber.
2. a kind of novel lithium battery cover plate according to claim 1 is characterized in that the cross sectional shape of described salient point (51) and salient point (23) is respectively triangle or circle.
3. a kind of novel lithium battery cover plate according to claim 1, the quantity that it is characterized in that described salient point (51) salient point (23) is respectively and is two or more.
4. a kind of novel lithium battery cover plate according to claim 1 is characterized in that described explosion-proof diaphragm (30) outside is arranged with ring-type insulated enclosure circle (60), is provided with vent panel (40) in ring-type insulated enclosure circle (60) bottom side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202606877U CN201536119U (en) | 2009-11-25 | 2009-11-25 | Novel lithium cell cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202606877U CN201536119U (en) | 2009-11-25 | 2009-11-25 | Novel lithium cell cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201536119U true CN201536119U (en) | 2010-07-28 |
Family
ID=42535895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202606877U Expired - Lifetime CN201536119U (en) | 2009-11-25 | 2009-11-25 | Novel lithium cell cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201536119U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916834A (en) * | 2010-09-07 | 2010-12-15 | 天津力神电池股份有限公司 | Low-resistivity cylindrical lithium ion battery cover with novel metallic gasket |
| CN101916835A (en) * | 2010-09-07 | 2010-12-15 | 天津力神电池股份有限公司 | Low-resistance cylindrical lithium ion battery cover with novel top cover |
| CN102227018A (en) * | 2010-07-29 | 2011-10-26 | 天津力神电池股份有限公司 | Low-resistance cylindrical lithium-ion battery cover |
| CN103137912A (en) * | 2011-11-23 | 2013-06-05 | 广州鹏辉能源科技股份有限公司 | Lithium battery cover cap |
-
2009
- 2009-11-25 CN CN2009202606877U patent/CN201536119U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102227018A (en) * | 2010-07-29 | 2011-10-26 | 天津力神电池股份有限公司 | Low-resistance cylindrical lithium-ion battery cover |
| CN101916834A (en) * | 2010-09-07 | 2010-12-15 | 天津力神电池股份有限公司 | Low-resistivity cylindrical lithium ion battery cover with novel metallic gasket |
| CN101916835A (en) * | 2010-09-07 | 2010-12-15 | 天津力神电池股份有限公司 | Low-resistance cylindrical lithium ion battery cover with novel top cover |
| CN103137912A (en) * | 2011-11-23 | 2013-06-05 | 广州鹏辉能源科技股份有限公司 | Lithium battery cover cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN KEDALI INDUSTRIAL CO., LTD. Free format text: FORMER NAME: SHENZHEN KEDALI INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518109, Shenzhen Guangdong, Baoan District Province on the north side of Huaxing Road, built on the north side of the first industrial zone Patentee after: Shenzhen Kedali Industrial Co., Ltd. Address before: 518109, Shenzhen Guangdong, Baoan District Province on the north side of Huaxing Road, built on the north side of the first industrial zone Patentee before: Shenzhen KDL Industrial Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100728 |