CN205863270U - A kind of blast resistance construction of electrokinetic cell - Google Patents
A kind of blast resistance construction of electrokinetic cell Download PDFInfo
- Publication number
- CN205863270U CN205863270U CN201620291827.7U CN201620291827U CN205863270U CN 205863270 U CN205863270 U CN 205863270U CN 201620291827 U CN201620291827 U CN 201620291827U CN 205863270 U CN205863270 U CN 205863270U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof valve
- top cover
- ring
- pressure disc
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000004880 explosion Methods 0.000 claims abstract description 12
- 238000007373 indentation Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000010412 perfusion Effects 0.000 abstract description 4
- 206010020852 Hypertonia Diseases 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 10
- 239000007789 gas Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000010485 coping Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002265 prevention Effects 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
Abstract
The utility model discloses the blast resistance construction of a kind of electrokinetic cell, including explosion-proof valve and top cover, explosion-proof valve is arranged on the valve body installing hole offered on top cover.The middle part of explosion-proof valve is steam vent, and explosion-proof valve is provided with rupture pressure disc at the top of steam vent.Rupture pressure disc is provided with explosion indentation.Top cover is provided with together with the shaft shoulder of explosion-proof valve and forms the counterbore sealing structure, is provided with sealing ring in counterbore；The bottom of top cover is provided with back-up ring pallet, and the periphery that explosion-proof valve is positioned under sealing ring offers circlip groove, is provided with the resilient back-up ring of tool between circlip groove, the top of top cover and back-up ring pallet.Blast resistance construction of the present utility model uses independent explosion-proof valve, and explosion-proof valve is provided with under high pressure the rupture pressure disc that can split.When the hypertonia of inside battery, rupture pressure disc splits, and forms relief hole, discharges the gas of inside battery High Temperature High Pressure, it is to avoid battery explosion.In the production process of battery, it is possible to use the valve body installing hole perfusion electrolyte of top cover, charging efficiency is high.
Description
Technical field
This utility model relates to a kind of electrokinetic cell parts, particularly relates to the blast resistance construction of a kind of electrokinetic cell, belongs to
Power battery technology field.
Background technology
Electrokinetic cell in use, due to over-charging of battery, cross put, short circuit etc. reason, it is possible in causing battery
Portion produces the gas of High Temperature High Pressure, if these high temperature and high pressure gas can not be discharged into outside batteries in time, it is possible to cause electricity
Pond disintegrate, blast, on fire, occur major accident.So electrokinetic cell is the most all provided with has release internal pressure function
Blast resistance construction, discharges outside batteries in time the high temperature of inside battery, gases at high pressure, it is to avoid battery explosion, improves and use
Safety.
The blast resistance construction of current driving force battery is general and coping plate is combined into an entirety, coping plate needs additionally process
There is electrolyte filling hole, after last battery completes all process steps, then electrolyte filling hole is sealed.Owing to electrolyte filling hole is straight
Footpath is smaller, causes electrolyte filling efficiency the lowest, and the requirement to perfusion equipment is the highest, simultaneously because how to seal work together
, there is the insecure possibility of sealing in sequence, many hidden danger points of a leakage for battery.
Utility model content
Main purpose of the present utility model is to solve the problems referred to above that current driving force battery anti-explosion structure exists, it is provided that
A kind of new power battery explosion protection structure.
The purpose of this utility model reaches by following technical solution:
The blast resistance construction of a kind of electrokinetic cell, including explosion-proof valve and top cover, described explosion-proof valve is arranged on described top cover and opens
If valve body installing hole on.Described explosion-proof valve and top cover are assembly independently before battery production, in the life of battery
During product, the valve body installing hole on top cover is after electrolyte filling as the electrolyte filling hole of electrokinetic cell, explosion-proof valve
Just install on top cover, form the top cover blast resistance construction with explosion prevention function together with top cover.
As a kind of preferred version, the middle part of described explosion-proof valve is steam vent, and described explosion-proof valve is on the top of described steam vent
Portion is provided with rupture pressure disc.Rupture pressure disc bursts when cell internal pressure is excessive so that ventilate in steam vent upper end.
As a kind of preferred version, described rupture pressure disc is provided with explosion indentation.When the pressure of inside battery is more than rupture pressure disc
During the pressure that can bear, rupture pressure disc just splits along explosion indentation, and the steam vent of explosion-proof valve fully opens, and discharges inside battery high
The gas of temperature high pressure.
As a kind of preferred version, described rupture pressure disc is installed in the upper end of described explosion-proof valve by welding manner.
As a kind of preferred version, described top cover is provided with together with the shaft shoulder of described explosion-proof valve to be formed and seals the heavy of structure
Hole, is provided with sealing ring in described counterbore；Be provided with back-up ring pallet in the bottom of described top cover, described explosion-proof valve is positioned at sealing ring
Under periphery offer circlip groove, be provided with between described circlip groove, the top of described top cover and back-up ring pallet tool resilient
Back-up ring.
When installing explosion-proof valve, back-up ring and back-up ring pallet assembled, and top cover housing with electrokinetic cell welds
Being connected together, the bottom of top cover has been airtight space, and sealing ring has been placed under the shaft shoulder of described explosion-proof valve, by explosion-proof valve
Sharper head first passes through the valve body installing hole of top cover, is passed down through back-up ring always, owing to back-up ring is flexible, on explosion-proof valve inclined-plane
Under the effect of outwardly radial power, back-up ring outwards flicks, its internal diameter swell, is pressed downward against by explosion-proof valve always, until on explosion-proof valve
Circlip groove extend over the lower surface of top cover, and owing to back-up ring pallet is to back-up ring active force upwards so that back-up ring is always
Touch the lower surface of top cover, when explosion-proof valve assembling puts in place, and the lower surface of the fully extended top cover of circlip groove on explosion-proof valve, back-up ring exists
Shrink under the effect of its own resilient, automatically snap in circlip groove, and when designing, the external diameter of back-up ring is installed more than top cover upper valve body
The diameter in hole, so, the endoporus of back-up ring blocks the circlip groove of explosion-proof valve, and external diameter blocks top cover, make explosion-proof valve can not the most upwards pine
Move back, complete the installation of explosion-proof valve.Further, after installation the sealing ring on explosion-proof valve by the explosion-proof valve shaft shoulder and the upper surface of top cover counterbore
Compression, is formed and seals, it is ensured that the sealing property of battery.
Advantageous Effects of the present utility model: blast resistance construction of the present utility model uses independent explosion-proof valve, explosion-proof valve
It is provided with under high pressure the rupture pressure disc that can split.When the hypertonia of inside battery, rupture pressure disc splits, and forms relief hole, it is to avoid
Battery explosion.Owing to explosion-proof valve of the present utility model and top cover are split-type design, top cover is provided with valve body installing hole, at battery
Production process in, it is possible to use valve body installing hole perfusion electrolyte, owing to valve body installing hole diameter is bigger, electrolyte filling
Efficiency comparison is high, and explosion-proof valve is installed on the valve body installing hole of top cover after battery production all process steps completes again, the most also
Battery fully seals, it is not necessary to hermetic electrolyte perfusion hole operation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment；
Fig. 2 is the parts explosion of Fig. 1；
In figure, label is entitled: 1-top cover, 2-explosion-proof valve, 3-back-up ring pallet, 4-sealing ring, 5-back-up ring, 6-rupture pressure disc,
7-counterbore, 8-steam vent, 9-valve body installing hole, 10-bursts indentation, 11-circlip groove.
Detailed description of the invention
For making those skilled in the art more clear and clear and definite the technical solution of the utility model, below in conjunction with embodiment and
This utility model is described in further detail by accompanying drawing, but embodiment of the present utility model is not limited to this.
As depicted in figs. 1 and 2, the blast resistance construction of a kind of electrokinetic cell, including explosion-proof valve 2 and top cover 1, explosion-proof valve 2 is installed
On the valve body installing hole 9 offered on described top cover 1；The middle part of explosion-proof valve 2 is steam vent 8, and explosion-proof valve 2 is on the top of steam vent 8
Portion is provided with rupture pressure disc 6；Rupture pressure disc 6 is provided with explosion indentation 10；Rupture pressure disc 6 is installed in the upper end of explosion-proof valve 2 by welding manner；
Top cover 1 is provided with together with the shaft shoulder of explosion-proof valve 2 and forms the counterbore 7 sealing structure, is provided with sealing ring 4 in counterbore 7；Described
The bottom of top cover 1 is provided with back-up ring pallet 3, and the periphery that described explosion-proof valve 2 is positioned under sealing ring 4 offers circlip groove 11, in institute
State and between circlip groove 11, the top of described top cover 1 and back-up ring pallet 3, be provided with the resilient back-up ring 5 of tool.
When installing explosion-proof valve 2, back-up ring 5 and back-up ring pallet 3 assembled, and top cover 1 with the shell of electrokinetic cell
Body welds together, and the bottom of top cover 1 has been the space closed, and sealing ring 4 has been placed under the shaft shoulder of described explosion-proof valve 2,
Head sharper for explosion-proof valve 2 is first passed through the valve body installing hole 9 of top cover 1, is passed down through back-up ring 5 always, owing to back-up ring 5 has bullet
Property, under the effect of the outwardly radial power in explosion-proof valve 2 inclined-plane, back-up ring 5 outwards flicks, its internal diameter swell, by explosion-proof valve 2 always to
Under press, until the circlip groove 11 on explosion-proof valve 2 extends over the lower surface of top cover 1, and due to back-up ring pallet 3 to back-up ring 5 to
On active force so that back-up ring 5 touch the lower surface of top cover 1 always, when explosion-proof valve 2 assembling put in place, the circlip groove on explosion-proof valve 2
The lower surface of 11 fully extended top covers 1, back-up ring 5 shrinks under the effect of its own resilient, automatically snaps in circlip groove 11, and set
The external diameter of timing back-up ring 5 is more than the diameter of the valve body installing hole 9 on top cover 1, and so, the endoporus of back-up ring 5 blocks the gear of explosion-proof valve
Ring recess 11, external diameter blocks top cover 1, and explosion-proof valve 2 can not the most upwards move back by pine, completes the installation of explosion-proof valve 2.After installation on explosion-proof valve 2
Sealing ring 4 compressed by the shaft shoulder of explosion-proof valve 2 and the upper surface of top cover counterbore 7, formed seal, it is ensured that the sealing of battery
Energy.
The above, only this utility model preferred embodiment, but protection domain of the present utility model is not limited to
This, any those familiar with the art is in scope disclosed in the utility model, according to skill of the present utility model
Art scheme and conceive equivalent or change in addition, broadly falls into protection domain of the present utility model.
Claims (1)
1. the blast resistance construction of an electrokinetic cell, it is characterised in that: described blast resistance construction includes explosion-proof valve (2) and top cover (1), institute
State explosion-proof valve (2) to be arranged on described top cover (1) on the valve body installing hole (9) offered；The middle part of described explosion-proof valve (2) is aerofluxus
Hole (8), described explosion-proof valve (2) is provided with rupture pressure disc (6) at the top of described steam vent (8)；Described rupture pressure disc (6) is provided with explosion
Indentation (10)；Described rupture pressure disc (6) is installed in the upper end of described explosion-proof valve (2) by welding manner；Described top cover (1) is provided with
Form the counterbore (7) sealing structure together with the shaft shoulder of described explosion-proof valve (2), in described counterbore (7), be provided with sealing ring (4)；
Be provided with back-up ring pallet (3) in the bottom of described top cover (1), the periphery that described explosion-proof valve (2) is positioned under sealing ring (4) offers
Circlip groove (11), is provided with tool resilient between described circlip groove (11), the top of described top cover (1) and back-up ring pallet (3)
Back-up ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291827.7U CN205863270U (en) | 2016-04-08 | 2016-04-08 | A kind of blast resistance construction of electrokinetic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291827.7U CN205863270U (en) | 2016-04-08 | 2016-04-08 | A kind of blast resistance construction of electrokinetic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205863270U true CN205863270U (en) | 2017-01-04 |
Family
ID=57643203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620291827.7U Expired - Fee Related CN205863270U (en) | 2016-04-08 | 2016-04-08 | A kind of blast resistance construction of electrokinetic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205863270U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379951A (en) * | 2019-05-28 | 2019-10-25 | 江苏华锋新能源科技有限公司 | A kind of novel power battery top cover |
| CN110429214A (en) * | 2019-08-07 | 2019-11-08 | 宁德时代新能源科技股份有限公司 | Cap assembly for secondary battery and secondary battery |
| CN111587498A (en) * | 2018-01-10 | 2020-08-25 | 奥迪股份公司 | Safety valve for a housing and energy store for storing electrical energy |
| CN115133217A (en) * | 2022-05-27 | 2022-09-30 | 上海交通大学 | Automobile battery active safety valve based on shape memory alloy circular ring and lithium battery |
-
2016
- 2016-04-08 CN CN201620291827.7U patent/CN205863270U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111587498A (en) * | 2018-01-10 | 2020-08-25 | 奥迪股份公司 | Safety valve for a housing and energy store for storing electrical energy |
| US11486506B2 (en) | 2018-01-10 | 2022-11-01 | Audi Ag | Safety valve for a housing, and energy store for storing electric energy |
| CN110379951A (en) * | 2019-05-28 | 2019-10-25 | 江苏华锋新能源科技有限公司 | A kind of novel power battery top cover |
| CN110429214A (en) * | 2019-08-07 | 2019-11-08 | 宁德时代新能源科技股份有限公司 | Cap assembly for secondary battery and secondary battery |
| US11637348B2 (en) | 2019-08-07 | 2023-04-25 | Contemporary Amperex Technology Co., Limited | Cover assembly of secondary battery and secondary battery |
| CN115133217A (en) * | 2022-05-27 | 2022-09-30 | 上海交通大学 | Automobile battery active safety valve based on shape memory alloy circular ring and lithium battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 |