CN207611793U - A kind of lithium ion battery cover and lithium ion battery - Google Patents
A kind of lithium ion battery cover and lithium ion battery Download PDFInfo
- Publication number
- CN207611793U CN207611793U CN201721416508.5U CN201721416508U CN207611793U CN 207611793 U CN207611793 U CN 207611793U CN 201721416508 U CN201721416508 U CN 201721416508U CN 207611793 U CN207611793 U CN 207611793U
- Authority
- CN
- China
- Prior art keywords
- connecting portion
- ion battery
- lithium ion
- burst disk
- edge
- 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
Links
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a kind of lithium ion battery cover, including head cover, burst disk and orifice plate；The edge of head cover is opposite with the marginal position of burst disk and abuts, the center of burst disk is recessed to form weld part to the direction far from head cover, and orifice plate is set to the side far from the head cover of weld part；Orifice plate includes first connecting portion and the second connecting portion that is connected with the first connecting portion, the first connecting portion is plate, the weld part is welded in the first connecting portion, and the positive pole ear that the second connecting portion is used to connect with the lithium ion battery cover is by being welded to connect.The utility model also provides a kind of lithium ion battery.Lithium ion battery cover and lithium ion battery provided by the utility model, it is therefore prevented that burst disk disconnects too early with orifice plate, improves anti-overcharge performance, reduces the internal resistance of block, meets high current and passes through demand；Convenient welding and yield height, improve the consistency of packaging efficiency and the internal resistance of cell.
Description
【Technical field】
The utility model is related to battery technology field more particularly to a kind of lithium ion battery covers and lithium ion battery.
【Background technology】
With the development of society, the energy it is in short supply, the exploitation of green energy resource and storing technology become people there is an urgent need to solve
Certainly the problem of.Lithium ion battery is since energy density is high, service life is long, self discharge is low, memory-less effect, high/low temperature adaptability
By force, have high power endurance and it is environmentally protective the advantages that and become people's focus of attention.
Lithium ion battery is typically to be used by multiple battery strings and groups of mode, and the gross energy of stack battery is larger,
The hidden danger that single branch over-charging of battery or entire battery pack can be caused to overcharge in charging process when lithium ion battery overcharges, can cause
Voltage rises rapidly with the increase of reaction polarization, leads to the irreversible change and electrolyte of battery positive electrode active material structure
Decompose, generate a large amount of gas, release a large amount of heat, the temperature and internal pressure for eventually leading to battery sharply increase, exist explosion and
The security risks such as burning.
Lithium ion battery cover is most important safety guarantee component in lithium ion battery, be provided in block burst disk and
Orifice plate, orifice plate are connect with the positive pole ear on positive plate, make positive plate and external connection, orifice plate also with the hemisphere face aluminium of burst disk
Film spot weldering connection.After the internal pressure of battery rises to certain value, become after the inside concave curved surface stress of the hemisphere face aluminium film of burst disk
At outwardly protruding so that the pad drawing crack of burst disk and orifice plate disconnects, and battery is opened a way with extraneous formed, and works as cell internal pressure
More than when the stress limit, burst disk rupture, battery is opened at explosion-proof notching.Therefore, burst disk and the connection of orifice plate are straight
Connecing influences the anti-overcharge performance and security performance of block.
In consideration of it, it is really necessary to provide a kind of novel lithium ion battery cover and lithium ion battery to overcome above lack
It falls into.
【Utility model content】
The purpose of this utility model be to provide it is a kind of increase orifice plate and burst disk bonding area, prevent burst disk and orifice plate
Disconnect too early, the anti-overcharge performance that promotes block, reduce block internal resistance, meet high current by demand, improve security performance
Lithium ion battery cover and lithium ion battery.
To achieve the goals above, the utility model provides a kind of lithium ion battery cover, including head cover, burst disk and hole
Plate；The edge of the head cover is opposite with the marginal position of the burst disk and abuts, the center of the burst disk is to separate
The direction of the head cover is recessed to form weld part, and the orifice plate is set to the side far from the head cover of the weld part；Institute
It includes first connecting portion and the second connecting portion that is connected with the first connecting portion to state orifice plate, and the first connecting portion is plate,
The weld part is welded in the first connecting portion, what the second connecting portion was used to connect with the lithium ion battery cover
Positive pole ear is by being welded to connect.
In a preferred embodiment, the first connecting portion be it is disk-shaped, including upper surface and with the upper surface
Opposite lower surface, the weld part are welded on the upper surface, and the second connecting portion is connected to the lower surface.
In a preferred embodiment, the first connecting portion offers the ventilation through the upper surface and the lower surface
The quantity in hole, the venthole is multiple, and the venthole is ellipse.
In a preferred embodiment, the weld part is welded in the center of the upper surface, the venthole
It is disposed in proximity to the position at the edge of the first connecting portion.
In a preferred embodiment, the second connecting portion is band-like, and the second connecting portion is perpendicular to described the
One interconnecting piece, one end of the second connecting portion are set to the center of the first connecting portion, the second connecting portion
The positive pole ear that the other end is used to connect with the lithium ion battery cover is by being welded to connect；The second connecting portion with it is described
First connecting portion is integrally formed.
In a preferred embodiment, the edge of the burst disk exceeds the edge of the head cover, the burst disk
Edge coats the edge of the head cover to the edge of direction bending and the burst disk close to the edge of the head cover.
In a preferred embodiment, further include sealing ring, the edge after the bending of the burst disk is fastened in described
In sealing ring, the sealing ring is made of insulating materials.
In a preferred embodiment, further include steel loop and washer, the steel loop be set to the burst disk with it is described
Between head cover, the washer is set to the position close to the edge of the burst disk between the burst disk and the orifice plate.
The utility model also provides a kind of lithium ion battery, including shell, core and above-mentioned lithium ion battery cover；Institute
The cylinder that shell is one end open is stated, the core is contained in the shell, and one end of the core is provided with positive pole
Ear, the second connecting portion is with the positive pole ear by being welded to connect.
Compared with the prior art, lithium ion battery cover and lithium ion battery provided by the utility model, the weldering of burst disk
Socket part is welded in the first connecting portion of the plate of orifice plate, and the area of welding increases, it is therefore prevented that and burst disk disconnects too early with orifice plate,
Anti-overcharge performance is improved, the internal resistance of block is reduced, high current is met and passes through demand；The second connecting portion of orifice plate directly with
Positive pole ear welds, and convenient welding and yield height improve the security performance of lithium ion battery, improve packaging efficiency and battery
The consistency of internal resistance.
【Description of the drawings】
Fig. 1 is the structural schematic diagram of lithium ion battery cover provided by the utility model；
Fig. 2 is the front view of the orifice plate of lithium ion battery cover provided by the utility model；
Fig. 3 is the vertical view of the orifice plate of lithium ion battery cover provided by the utility model；
Fig. 4 is the structural schematic diagram of lithium ion battery provided by the utility model.
【Specific implementation mode】
It is clear in order to make the purpose of this utility model, technical solution and advantageous effects be more clear, below in conjunction with attached
Figure and specific implementation mode, the present invention will be further described in detail.It should be understood that described in this specification
Specific implementation mode is not intended to limit the utility model just for the sake of explaining the utility model.
Referring to Fig. 1, the utility model provides a kind of lithium ion battery cover 100, including head cover 10, burst disk 20 and hole
Plate 30.
Also referring to Fig. 4, the edge 11 of the head cover 10 is opposite with 21 position of edge of the burst disk 20 and mutual
Against the center of the burst disk 20 is recessed to form weld part 22 to the direction far from the head cover 10, and the orifice plate 30 is arranged
In the side far from the head cover 10 of the weld part 22；The orifice plate 30 includes first connecting portion 31 and connects with described first
The connected second connecting portion 32 of socket part 31, the first connecting portion 31 are plate, and the weld part 22 is welded in described first and connects
In socket part 31, the positive pole ear 71 that the second connecting portion 32 is used to connect with the lithium ion battery cover 100 passes through welding
Connection.
Also referring to Fig. 2 and Fig. 3, the first connecting portion 31 be it is disk-shaped, including upper surface 311 and with the upper table
The opposite lower surface 312 in face 311, the weld part 22 are welded on the upper surface 311, and the second connecting portion 32 is connected to
The lower surface 312.The first connecting portion 31 offers the venthole 313 through the upper surface 311 and lower surface 312,
The quantity of the venthole 313 is multiple, and the venthole 313 is used for when lithium ion battery overcharges, and reduces lithium ion battery
Internal air pressure, in present embodiment, the venthole 313 is ellipse.Specifically, the weld part 22 is welded on described
The center on surface 311, the venthole 313 are disposed in proximity to the position at the edge of the first connecting portion 31.
The second connecting portion 32 is band-like, and the second connecting portion 32 is perpendicular to the first connecting portion 31, described the
One end of two interconnecting pieces 323 is set to the center of the first connecting portion 31, and the other end of the second connecting portion 32 is used
In the positive pole ear 71 being connect with the lithium ion battery cover 100 by being welded to connect；The second connecting portion 32 with it is described
First connecting portion 31 is integrally formed, and the orifice plate 30 is made of aluminum.
In present embodiment, the edge 21 of the burst disk 20 exceeds the edge 11 of the head cover 10, the burst disk 20
Edge 21 coat the head cover to the edge 21 of direction bending and the burst disk 20 close to the edge 11 of the head cover 10
10 edge 11 further ensures being fixedly connected for burst disk 20 and head cover 10.
Lithium ion battery cover 100 provided by the utility model further includes sealing ring 40, after the bending of the burst disk 20
Edge be fastened in the sealing ring 40, the sealing ring 40 is made of insulating materials, such as rubber, and the sealing ring ensures
The insulating properties and leakproofness that lithium ion battery cover 100 is connect with other structures.
Lithium ion battery cover 100 provided by the utility model, further includes steel loop 50 and washer 51, and the steel loop 50 is arranged
Between the burst disk 20 and the head cover 10, the internal resistance of the steel loop 50 is larger, can prevent battery overcharge and electric current
It is excessive, while the gap between burst disk 20 and head cover 10 can also be adjusted, contact area is protected, the safety anti-explosive of battery is improved
Performance.The washer 51 is set to the edge 21 of the close burst disk 20 between the burst disk 20 and the orifice plate 30
Position, the washer 51 play the supporting role between the orifice plate 30 and burst disk 20, prevent 30 stress deformation of orifice plate and squeeze
Press the burst disk 20.
The utility model also provides a kind of lithium ion battery 200, including shell 60, core 70 and above-mentioned lithium ion battery
Block 100；The shell 60 is the cylinder of one end open, and the core 70 is contained in the shell 60, the core 70
One end be provided with positive pole ear 71, the second connecting portion 32 is with the positive pole ear 71 by being welded to connect.
The weld part 22 of lithium ion battery cover 100 and lithium ion battery 200 provided by the utility model, burst disk 20 welds
It is connected in the first connecting portion 31 of the plate of orifice plate 30, the area of welding increases, it is therefore prevented that burst disk 20 is disconnected too early with orifice plate 30
It opens, improves anti-overcharge performance, reduce the internal resistance of block, meet high current and pass through demand；The second connecting portion of orifice plate 30
32 directly weld with positive pole ear 71, and convenient welding and yield height improve the security performance of lithium ion battery, improve assembling
The consistency of efficiency and the internal resistance of cell.
The utility model is not only in the description and the implementation described, therefore for the personnel of familiar field
For other advantage and modification is easily implemented, therefore without departing substantially from universal defined by claim and equivalency range
Spirit and scope in the case of, the utility model is not limited to specific details, representative equipment and shown here as with retouch
The diagram example stated.
Claims (9)
1. a kind of lithium ion battery cover, it is characterised in that：Including head cover, burst disk and orifice plate；The edge of the head cover and institute
It states the marginal position of burst disk relatively and abuts, the center of the burst disk is recessed to be formed to the direction far from the head cover
Weld part, the orifice plate are set to the side far from the head cover of the weld part；The orifice plate include first connecting portion and
The second connecting portion being connected with the first connecting portion, the first connecting portion are plate, and the weld part is welded in described the
On one interconnecting piece, the positive pole ear that the second connecting portion is used to connect with the lithium ion battery cover is by being welded to connect.
2. lithium ion battery cover as described in claim 1, it is characterised in that：The first connecting portion is disk-shaped, including
Upper surface and the lower surface opposite with the upper surface, the weld part are welded on the upper surface, the second connecting portion
It is connected to the lower surface.
3. lithium ion battery cover as claimed in claim 2, it is characterised in that：The first connecting portion is offered through described
The quantity of the venthole of the upper surface and the lower surface, the venthole is multiple, and the venthole is ellipse.
4. lithium ion battery cover as claimed in claim 3, it is characterised in that：The weld part is welded in the upper surface
Center, the venthole are disposed in proximity to the position at the edge of the first connecting portion.
5. lithium ion battery cover as claimed in claim 4, it is characterised in that：The second connecting portion be it is band-like, described the
For two interconnecting pieces perpendicular to the first connecting portion, one end of the second connecting portion is set to the centre bit of the first connecting portion
It sets, the positive pole ear that the other end of the second connecting portion is used to connect with the lithium ion battery cover is by being welded to connect；
The second connecting portion is integrally formed with the first connecting portion.
6. lithium ion battery cover as claimed in claim 5, it is characterised in that：The edge of the burst disk exceeds the head cover
Edge, the edge of the burst disk coats institute to the edge of direction bending and the burst disk close to the edge of the head cover
State the edge of head cover.
7. lithium ion battery cover as claimed in claim 6, it is characterised in that：Further include sealing ring, the burst disk it is curved
Edge after folding is fastened in the sealing ring, and the sealing ring is made of insulating materials.
8. lithium ion battery cover as claimed in claim 7, it is characterised in that：Further include steel loop and washer, the steel loop is set
It is placed between the burst disk and the head cover, the washer is set to close described between the burst disk and the orifice plate
The position at the edge of burst disk.
9. a kind of lithium ion battery, it is characterised in that：Including shell, core and the lithium as described in claim 1~8 any one
Ion battery block；The shell is the cylinder of one end open, and the core is contained in the shell, the one of the core
End is provided with positive pole ear, and the second connecting portion is with the positive pole ear by being welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721416508.5U CN207611793U (en) | 2017-10-27 | 2017-10-27 | A kind of lithium ion battery cover and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721416508.5U CN207611793U (en) | 2017-10-27 | 2017-10-27 | A kind of lithium ion battery cover and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207611793U true CN207611793U (en) | 2018-07-13 |
Family
ID=62794364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721416508.5U Expired - Fee Related CN207611793U (en) | 2017-10-27 | 2017-10-27 | A kind of lithium ion battery cover and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207611793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148747A (en) * | 2018-07-20 | 2019-01-04 | 苏州橙柳电子精密有限公司 | A kind of cylindrical lithium battery cap |
-
2017
- 2017-10-27 CN CN201721416508.5U patent/CN207611793U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109148747A (en) * | 2018-07-20 | 2019-01-04 | 苏州橙柳电子精密有限公司 | A kind of cylindrical lithium battery cap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201508864U (en) | Battery cover plate assembly, single battery and battery pack | |
| CN101626066B (en) | Lithium battery cover plate with explosion and breakage preventing protection apparatus and production method thereof | |
| CN102136552B (en) | The manufacture method of battery protecting apparatus, battery and battery protecting apparatus | |
| CN104505482A (en) | New lithium ion battery with protection function and preparation process thereof | |
| CN203631651U (en) | Current cut-off device and aluminum-shell lithium ion battery with same | |
| CN105070860A (en) | Rechargeable battery | |
| JP3188012U (en) | Lithium-ion battery safety device | |
| CN201994356U (en) | Battery assembly cover cap | |
| CN207611793U (en) | A kind of lithium ion battery cover and lithium ion battery | |
| CN207676956U (en) | Cylindrical lithium ion battery cap | |
| CN101281957A (en) | Closing battery with explosion-proof function | |
| CN207909939U (en) | A kind of new structural aluminum hull battery core | |
| CN201601187U (en) | Lithium ion battery | |
| CN206610880U (en) | A kind of lithium ion battery | |
| CN206163634U (en) | Lithium ion secondary cell that multireel core was convoluteed in succession | |
| CN202712307U (en) | Explosion-resistant combined cover of lithium ion battery | |
| CN209860067U (en) | Lithium battery structure with four electrodes | |
| CN208225932U (en) | A kind of slim explosion-proof cap of cylindrical lithium ion battery | |
| CN207282543U (en) | A kind of power battery safety top cover structure | |
| CN217655973U (en) | Battery cover plate, battery and electric equipment | |
| CN207116492U (en) | Top cover structure of power battery and electrokinetic cell | |
| CN208538990U (en) | A kind of cylindrical lithium ion battery new type explosion proof cap | |
| CN201966290U (en) | Cylinder-type lithium ion battery | |
| CN201608231U (en) | 9V soft package lithium battery | |
| CN206332121U (en) | A kind of new type solar energy automobile high-reliability lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 Termination date: 20181027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |