CN207398199U - Cylindrical lithium battery cap - Google Patents
Cylindrical lithium battery cap Download PDFInfo
- Publication number
- CN207398199U CN207398199U CN201721500795.8U CN201721500795U CN207398199U CN 207398199 U CN207398199 U CN 207398199U CN 201721500795 U CN201721500795 U CN 201721500795U CN 207398199 U CN207398199 U CN 207398199U
- Authority
- CN
- China
- Prior art keywords
- orifice plate
- burst disk
- lithium battery
- cylindrical lithium
- ptc pieces
- 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 - Fee Related
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of cylindrical lithium battery caps, including head cover, burst disk, orifice plate and sealing ring equipped with multiple through holes, the head cover, burst disk and orifice plate stack successively from top to bottom, the burst disk center is to lower recess, the center of the burst disk depressed area is attached with aperture plate center using welding, the head cover, burst disk and orifice plate are arranged in sealing ring, further include PTC pieces and lug, the PTC pieces are connected to orifice plate bottom on one side, and the lug is connected to the another side of PTC pieces.Cylindrical lithium battery cap provided by the utility model, the PTC pieces are arranged on orifice plate bottom on one side, the lug is connected with the another side of PTC pieces, the PTC pieces of reduction and the contact area of battery cap other assemblies, reduce the internal resistance of cell, also it is more convenient simultaneously to avoid causing neglected loading PTC pieces because of human factor in installation process, it is that the safe to use of battery cannot be guaranteed.
Description
Technical field
The utility model is related to technical field of lithium batteries, specifically, are related to a kind of cylindrical lithium battery cap.
Background technology
Lithium ion battery, without noxious material, has obtained day so that it is higher than energy, specific power is big, has extended cycle life
Benefit is widely applied.Especially cylindrical lithium ion battery, its sturdy and durable, good seal, easy connection in series-parallel combination obtain it
It is used to extensive, therefore the requirement to its security performance is also gradually to require higher, and people is avoided to occur in use
Contingency.
Current cylindrical lithium ion block safety device PTC thermistors, be arranged on the head cover of block with it is explosion-proof
Between piece, the contact area between head cover and burst disk is larger, internal resistance of cell increase, and the connection of current block is by sealing
Bound edge pressure contact connection afterwards；So volume is efficiently used in itself to battery to be wasted, while also can be because between each component
Contact does not cause closely excessive, battery leakage of internal resistance etc. may some caused safety problems.
Utility model content
Solve that internal resistance is excessive and the cylinder type lithium battery lid of battery leakage the purpose of this utility model is to provide a kind of
Cap.
Technical solution is used by cylindrical lithium battery cap disclosed in the utility model：A kind of cylinder type lithium battery lid
Cap, including head cover, burst disk, orifice plate and sealing ring equipped with multiple through holes, the head cover, burst disk and orifice plate from up to
Under stack successively, the burst disk center is to lower recess, and the center of the burst disk depressed area and aperture plate center are using welding
It is attached, the head cover, burst disk and orifice plate are arranged in sealing ring, further include PTC pieces and lug, the PTC pieces
Orifice plate bottom is connected on one side, and the lug is connected to the another side of PTC pieces.
Preferably, for the PTC pieces with orifice plate using conductive glue connection, the PTC pieces use conducting resinl with lug
Connection.
Preferably, the orifice plate is equipped with aperture area and non-aperture area, and the aperture area offers multiple through holes, institute
The center that non-aperture area is arranged on orifice plate is stated, the aperture area is arranged on around non-aperture area, is offered in the aperture area
Multiple through holes.
Preferably, the PTC pieces are circular configuration, and the PTC pieces are arranged on the non-aperture area of orifice plate bottom.
Preferably, the welding manner used between the burst disk and orifice plate is ultrasonic bonding connection or laser
It is welded to connect, solder joint at alloy is formed between the burst disk and orifice plate.
Preferably, the top cap central position is the frustum cone structure of protrusion, and the side of the round platform offers more
A gas vent.
Preferably, the head cover surface is additionally provided with erosion resistant coating.
The advantageous effect of cylindrical lithium battery cap disclosed in the utility model is：The PTC pieces are arranged on hole on one side
Plate bottom, the lug are connected with the another side of PTC pieces, and the PTC pieces of reduction and the contact area of battery cap other assemblies subtract
Lacked the internal resistance of cell, at the same it is also more convenient avoid causing neglected loading PTC pieces because of human factor in installation process, ensure that battery
It is safe to use.
Description of the drawings
Fig. 1 is the sectional view of the utility model cylindrical lithium battery cap；
Fig. 2 is the bottom view of the utility model cylindrical lithium battery cap.
Specific embodiment
The utility model is further elaborated and illustrated with reference to specific embodiment and Figure of description：It refer to figure
1 and Fig. 2, a kind of cylindrical lithium battery cap, including head cover 10, burst disk 20, the orifice plate 30 of multiple through holes, sealing ring 40, PTC
Piece 31 and lug 32, head cover 10, burst disk 20 and orifice plate 30 stack successively from top to bottom, head cover 10, burst disk 20 and
Orifice plate 30 is arranged in sealing ring 40.10 centre of head cover is the frustum cone structure of protrusion, and the side of round platform offers multiple
Gas vent 12 will break through the gas discharge of burst disk 20, and prevent excessive in cylindrical lithium battery cap air pressure inside, reveal
Situation, 10 surface of head cover sets erosion resistant coating 11, corroded when head cover 10 being avoided to be contacted with the external world, and increase head cover 10 uses the longevity
Life.20 centre of burst disk uses ultrasonic bonding to lower recess, center and 30 center of orifice plate of 20 depressed area of burst disk
Or laser welding is attached, and alloy solder joint is formed between burst disk 20 and orifice plate 30, PTC pieces 31 are connected to orifice plate 30 on one side
Bottom, lug 32 are connected to the another side of PTC pieces 31.
Orifice plate is equipped with aperture area 35 and non-aperture area 36, and aperture area 35 offers multiple through holes, and non-aperture area 36 is arranged on
The center of orifice plate 30, aperture area 35 are arranged on around non-aperture area 36, and multiple through holes are offered in aperture area 35.PTC pieces 31
For circular configuration, PTC pieces 31 are connected using conducting resinl 34 with the non-aperture area 36 of orifice plate 30, and PTC pieces 31 are arranged on orifice plate 30
Non- aperture area 36, the through hole on orifice plate 30 are distributed around PTC pieces 31, and PTC pieces will not stop the gas of through hole on orifice plate 30
Body circulates, and lug 32 is attached using conducting resinl 34 and PTC pieces 31.
In said program, PTC pieces are arranged on orifice plate bottom on one side, lug is connected with the another side of PTC pieces, reduction
The contact area of PTC pieces and battery cap other assemblies, reduces the internal resistance of cell, while conveniently in installation process, avoid because
Human factor causes neglected loading PTC pieces, ensures the safe to use of battery.
With orifice plate using conductive glue connection, PTC pieces, using conductive glue connection, solve existing product and adopt PTC pieces with lug
With the method for welding by tab welding to orifice plate, manufacturing process is more convenient, and PTC pieces are connected to by conducting resinl on orifice plate
Non- aperture area, so as to which the gas stream for not interfering with orifice plate is corresponded topic.The frustum cone side of head cover offers multiple gas vents, can
Will break through burst disk gas discharge, prevent it is excessive in cylindrical lithium battery cap air pressure inside, there is a situation where revealing, head cover
Surface is additionally provided with one layer of erosion resistant coating, increases the service life of head cover.
Finally it should be noted that above example is only to illustrate the technical solution of the utility model rather than to this reality
With the limitation of novel protected scope, although being explained in detail with reference to preferred embodiment to the utility model, this field it is general
Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the utility model, without departing from this
The spirit and scope of utility model technical solution.
Claims (7)
1. a kind of cylindrical lithium battery cap, including head cover, burst disk, orifice plate and sealing ring, the head cover, burst disk and
Orifice plate stacks successively from top to bottom, and the burst disk center is to lower recess, in the center and orifice plate of the burst disk depressed area
The heart is attached using welding, and the head cover, burst disk and orifice plate are arranged in sealing ring, which is characterized in that are further included
PTC pieces and lug, the PTC pieces are connected to orifice plate bottom on one side, and the lug is connected to the another side of PTC pieces.
2. cylindrical lithium battery cap as described in claim 1, which is characterized in that the PTC pieces use conducting resinl with orifice plate
Connection, the PTC pieces are with lug using conductive glue connection.
3. cylindrical lithium battery cap as claimed in claim 2, which is characterized in that the orifice plate is equipped with aperture area and non-perforate
Area, the aperture area offer multiple through holes, and the non-aperture area is arranged on the center of orifice plate, and the aperture area is arranged on non-open
Around porose area, multiple through holes are offered in the aperture area.
4. cylindrical lithium battery cap as claimed in claim 3, which is characterized in that the PTC pieces are circular configuration, described
PTC pieces are arranged on the non-aperture area of orifice plate bottom.
5. cylindrical lithium battery cap as described in claim 1, which is characterized in that used between the burst disk and orifice plate
Welding manner connects for ultrasonic bonding connection or laser welding, and solder joint at alloy is formed between the burst disk and orifice plate.
6. cylindrical lithium battery cap as described in claim 1, which is characterized in that the top cap central position is raised circle
Platform structure, the side of the round platform offer multiple gas vents.
7. cylindrical lithium battery cap as claimed in claim 6, which is characterized in that the head cover surface is additionally provided with erosion resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721500795.8U CN207398199U (en) | 2017-11-13 | 2017-11-13 | Cylindrical lithium battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721500795.8U CN207398199U (en) | 2017-11-13 | 2017-11-13 | Cylindrical lithium battery cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207398199U true CN207398199U (en) | 2018-05-22 |
Family
ID=62326098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721500795.8U Expired - Fee Related CN207398199U (en) | 2017-11-13 | 2017-11-13 | Cylindrical lithium battery cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207398199U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103359A (en) * | 2018-07-20 | 2018-12-28 | 苏州橙柳电子精密有限公司 | A kind of battery cap |
| CN111816803A (en) * | 2019-04-12 | 2020-10-23 | 惠州市聚鼎电子有限公司 | Battery cap and battery using same |
| CN113690552A (en) * | 2021-08-26 | 2021-11-23 | 东莞凯德新能源有限公司 | Cylindrical lithium battery cap |
-
2017
- 2017-11-13 CN CN201721500795.8U patent/CN207398199U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103359A (en) * | 2018-07-20 | 2018-12-28 | 苏州橙柳电子精密有限公司 | A kind of battery cap |
| CN111816803A (en) * | 2019-04-12 | 2020-10-23 | 惠州市聚鼎电子有限公司 | Battery cap and battery using same |
| CN113690552A (en) * | 2021-08-26 | 2021-11-23 | 东莞凯德新能源有限公司 | Cylindrical lithium battery cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20201113 |