CN208111552U - A kind of power battery pack explosion-proof decompression device - Google Patents
A kind of power battery pack explosion-proof decompression device Download PDFInfo
- Publication number
- CN208111552U CN208111552U CN201820496764.8U CN201820496764U CN208111552U CN 208111552 U CN208111552 U CN 208111552U CN 201820496764 U CN201820496764 U CN 201820496764U CN 208111552 U CN208111552 U CN 208111552U
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- China
- Prior art keywords
- battery pack
- air vent
- ring
- guide ring
- cover plate
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- 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
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- Battery Mounting, Suspending (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a kind of power battery packs,It provides a kind of safe and reliable,Air vent cracking pressure can quantitatively be adjusted,Air vent can keep sealing after opening,Waterproof ventilated membrane replaces convenient power battery pack explosion-proof decompression device,Solving air vent cracking pressure existing in the prior art can not be adjusted,Battery pack seal failure after unlatching,Waterproof ventilated membrane can not be replaced,Security reliability is poor,The technical issues of use cost height etc.,It includes battery pack housing and the air vent for being provided thereon face,Outer cover plate is covered in the external port of air vent,The medial surface of outer cover plate extends inwardly to form guide ring,Guide ring passes through air vent and extends in battery pack housing,The resetting-mechanism that can drive guide ring slid inward is equipped in the edge of air vent,Several relief holes are equipped on the guide ring close to outer cover plate,Relief hole upper cover is equipped with waterproof ventilated membrane,When being moved outside guide ring,Battery pack housing cavity is connected by waterproof ventilated membrane with exterior space.
Description
Technical field
It the utility model relates to a kind of power battery pack more particularly to a kind of structure are simple, is skillfully constructed, can quantitatively adjust
Air vent cracking pressure, and the sealing that can automatically reset after air vent unlatching, waterproof ventilated membrane replace conveniently power electric
Pond packet explosion-proof decompression device.
Background technique
With the development of electric vehicle, the security protection problem of lithium-ion-power cell packet is increasingly protruded, since lithium battery exists
Bulk gas can be generated under abnormality, if power battery pack cannot be effectively discharged rapidly in these gases, will lead to power electric
Pond packet internal pressure, which increases, even there is explosion accident, wraps in power battery usually require to be arranged explosion-protection equipment thus, existing
Explosion-protection equipment be usually in power battery to wrap setting waterproof vent valve, in the process by the waterproof and breathable on waterproof vent valve
Film carries out the adjusting of battery pack external and internal pressure and waterproof sealing, when power battery pack internal pressure increases rapidly, waterproof ventilated membrane
Rupture pressure release can be carried out under the action of high pressure gas, but the waterproof ventilated membrane ruptured directly results in power battery pack sealing and loses
Effect, simultaneously because the waterproof ventilated membrane on waterproof vent valve can not be individually replaced, causes it broken to easily cause second accident
After splitting must integral replacing waterproof vent valve, cause unnecessary waste, separately due to waterproof and breathable membrane material itself determine it is anti-
The cracking pressure of water vent valve, therefore air vent cracking pressure can not be adjusted according to actual needs, poor universality, Wu Faguang
The general power battery pack for being applicable in various specifications.
Summary of the invention
Mainly there is provided one kind to be skillfully constructed for the utility model, securely and reliably, can quantitatively adjust air vent cracking pressure,
And the sealing that can automatically reset after air vent unlatching, conveniently power battery pack explosion-proof relief fills for waterproof ventilated membrane replacement
It sets, solving air vent cracking pressure existing in the prior art can not be adjusted according to actual needs, and waterproof vent valve is opened
Open rear battery pack seal failure, waterproof ventilated membrane can not be individually replaced, and lead to poor universality, security reliability is low, use cost
High technical problem.
The above-mentioned technical problem of the utility model is mainly to be addressed by following technical proposals：A kind of power battery
Packet explosion-proof decompression device, the air vent including battery pack housing and on battery pack housing, in the external port of the air vent
On be covered with outer cover plate, the medial surface of outer cover plate extends inwardly to form guide ring, and guide ring passes through air vent and extends to battery pack
In shell, and the resetting-mechanism that can drive guide ring slid inward is equipped in the edge of air vent, in leading close to outer cover plate
Compression ring is equipped with several relief holes, and relief hole upper cover is equipped with waterproof ventilated membrane, outer under the effect of battery pack housing cavity pressure
When cover board drives guide ring to be displaced outwardly, battery pack housing cavity is connected by waterproof ventilated membrane with battery pack hull outside space
It is logical.By guide ring of the grafting with outer cover plate on the air vent of battery pack housing, and on guide ring, setting drives outer cover
Plate sealing cover lives the resetting-mechanism of air vent, and relief hole is arranged on the guide ring close to outer cover plate, covers dress waterproof again on relief hole
The starting pressure value of resetting-mechanism is previously set in ventilated membrane according to demand, when battery pack housing cavity pressure is more than resetting-mechanism
Starting pressure value when, battery pack housing cavity pressure push outer cover plate drive guide ring be displaced outwardly, the pressure release on guide ring
Hole exposes and is connected with the external world, and the pressed gas of battery pack housing cavity is discharged by the waterproof ventilated membrane on relief hole to carry out
Explosion-proof relief, waterproof ventilated membrane ensure that the waterproof requirement in pressure leak process, when power battery pack internal pressure increases rapidly,
Waterproof ventilated membrane can rupture under the action of high pressure gas, and after pressure release, outer cover plate is automatically multiple under the action of resetting-mechanism
Position and sealing cover lives air vent, guarantees the seal request of power battery pack, prevents second accident caused by seal failure, and
The waterproof ventilated membrane for removing rupture when correction maintenance is replaced, and convenient and efficient, structure is simple, is skillfully constructed, and securely and reliably, is led to
It is good with property, it is independently replaced after waterproof ventilated membrane rupture, it is low using adult.
Preferably, corresponding guide ring port levels extend outward to form flange in the battery pack housing, machine is resetted
Structure is the reset spring being folded between flange and corresponding air vent interior side port edge.Flange and electricity in guide ring inner end
Reset spring is set between the pack housing medial surface of pond and meets resetting-mechanism requirement, structure is simple, high reliablity, and manufacturing cost is low.
Annular pressure sensor can be set outside reset spring in corresponding battery pack housing, more preferably, in institute
Air vent interior side port edge is stated equipped with annular pressure sensor, annular pressure sensor is connected electrically in battery management system
On, the outboard end of reset spring is fixed on annular pressure sensor, and the inner end apical grafting of reset spring is in corresponding flange table
On face.By the way that annular pressure sensor is arranged in one end of reset spring, annular pressure sensor comes from the variation of spring pressure value
Acquire power battery pack internal pressure value, pressure detecting signal again real-time Transmission to battery management system with startup separator monitoring and
Diagnosis directly acquires the annular pressure sensor of spring pressure value, pressure detecting convenient for replacing the waterproof ventilated membrane of rupture in time
Accuracy is high.
Preferably, the air vent inner ring surface with air guide interannular is closed is clamped with inner seal ring, with inner seal ring
Corresponding guide ring outer ring surface is equipped with sealing ring locating slot, and inner seal ring is inlaid in sealing ring locating slot.Inner seal ring is used
Clearance seal between air vent inner ring surface and guide ring.
More preferably, the inner seal ring is fluoroplastics leather cup.Fluoroplastics cup packing is good, and corrosion resistance is high, makes
It is long with the service life.
Preferably, being equipped with annular pressing plate at the interior side port of the air vent, the inner ring surface of annular pressing plate, which carries over, to be put
The inner ring surface extending direction of stomata is towards extending to form baffle ring in battery pack housing.By the inner port in air vent, annular is set
Pressing plate, can be improved the battery pack casing rigidity on air vent periphery, and baffle ring can extend the sliding stroke of guide ring.
Preferably, being folded between the battery pack surface of shell and outer cover plate close to the air vent exterior side port outer close
Seal ring.By the way that outer seal ring is arranged, it can ensure that outer cover plate keeps enough close with battery pack surface of shell after outer cover plate reset
Envelope.
Preferably, being equipped with counterbore at the external port of the relief hole, waterproof ventilated membrane is mated formation in counterbore base and is led to
Cross that buckle-type pressure ring is closed to be fixed in counterbore.Waterproof ventilated membrane is fixedly mounted in counterbore by buckle-type pressure ring, fixation side
Formula is simple and reliable, convenient for disassembly and assembly.
It is fixed on outer cover plate medial surface preferably, the outboard end of the guide ring is screwed on.Guide ring is revolved by screw thread
It connects and is fixed on outer cover plate, it is convenient for disassembly and assembly, it is easily installed and repairs.
Preferably, the resetting-mechanism is to be folded between battery pack housing outer surface and corresponding outer cover plate inner surface
Extension spring.The realization resetting-mechanism function between battery pack housing outer surface and outer cover plate inner surface can be set in extension spring.
Therefore, a kind of power battery pack explosion-proof decompression device tool of the utility model has the advantage that：Can quantitatively setting and
It adjusts explosion-proof relief and starts pressure, can automatically reset again after opening and carry out security seal, waterproof is judged according to pressure detection value
Ventilated membrane rupture event, and judging result is exported in real time to battery management system and carries out fault monitoring, convenient for timely
The replacement of waterproof ventilated membrane is carried out, versatility is good, high safety and reliability；Waterproof ventilated membrane is fixedly mounted on by buckle-type pressure ring
On guide ring, disassembling, assembling and replacing is convenient.
Detailed description of the invention：
Fig. 1 is structural schematic diagram when a kind of power battery pack explosion-proof decompression device of the utility model is closed；
Fig. 2 is the enlarged drawing at A shown in Fig. 1；
Fig. 3 is the structural schematic diagram after a kind of power battery pack explosion-proof decompression device of the utility model is opened.
Specific embodiment：
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment 1：
As shown in figures 1 and 3, a kind of power battery pack explosion-proof decompression device of the utility model, including battery pack housing
1, air vent 2 is had on battery pack housing 1, outer cover plate 3 is housed in the external port upper cover of air vent 2, and right outside air vent 2
Coaxial fixed outer seal ring 14 on the outer cover plate 3 answered, makes outer cover plate 3 that can live air vent 2 by the closed sealing cover of outer seal ring 14,
It is screwed on the outboard end of guide ring 4 in the middle part of the medial surface of outer cover plate 3 by threaded coaxial, the inner end of guide ring 4 passes through deflation
It is extended to behind hole 2 in battery pack housing 1, coaxial fixed annular pressing plate 12 outside the interior side port of air vent 2, as shown in Fig. 2, ring
The inner ring surface extending direction that the inner ring surface of shape pressing plate 12 carries over air vent 2 again is extended to form towards integral type in battery pack housing 1
Baffle ring 13, corresponding 4 inner port of guide ring extends to form flange 8 horizontally outward in battery pack housing 1,8 lateral surface of flange with
Between corresponding 12 surface of annular pressing plate right angle setting several reset springs 5 form resetting-mechanisms, reset spring 5 is in circumference side
To being evenly distributed with, annular pressure sensor 9, annular pressure are housed on 12 surface of annular pressing plate corresponding with the outboard end of reset spring 5
Sensor 9 is connected electrically on battery management system, and the outboard end of reset spring 5 is fixed on annular pressure sensor 9, resets bullet
The inner end apical grafting of spring 5 is on corresponding 8 surface of flange.Several pressure releases are had in 4 outer end of guide ring close to outer cover plate 3
Hole 6, relief hole 6 is along the circumferential direction uniformly distributed on guide ring 4, counterbore 15 is provided at the external port of relief hole 6, at 15 bottom of counterbore
Portion mats formation waterproof ventilated membrane 7, buckle-type pressure ring 16 is clamped in the counterbore 15 outside waterproof ventilated membrane 7, waterproof ventilated membrane 7 passes through
Buckle-type pressure ring 16 is closed to be fixed in counterbore 15, and corresponding 4 surface of guide ring in 6 inside of relief hole extends outward to form sealing ring
Locating slot 11, sealing ring locating slot 11 is embedded to be filled with inner seal ring 10, and inner seal ring 10 is fluoroplastics leather cup, and guide ring 4 is reciprocal
When sliding, the closed envelope of the outer ring surface of inner seal ring 10 is against on the inner ring surface of baffle ring 13 or air vent 2, in battery pack housing 1
Under cavity pressure effect, when outer cover plate 3 drives guide ring 4 that 5 resistance of reset spring is overcome to be displaced outwardly, 4 outer end of guide ring is prevented
Battery pack housing 1 is gradually exposed in water ventilated membrane 7, and 1 chamber pressure gas of battery pack housing is emitted into battery by waterproof ventilated membrane 7
Outside pack housing 1.
Embodiment 2：
Resetting-mechanism is several stretchings being folded between 1 outer surface of battery pack housing and corresponding 3 inner surface of outer cover plate
Spring, and extension spring is along the circumferential direction uniformly distributed outside the external port of air vent 2, in the corresponding battery pack of 2 external port of air vent
Coaxial fixed outer seal ring 14 on shell 1, makes outer cover plate 3 that can live air vent 2, remaining part by the closed sealing cover of outer seal ring 14
Divide identical with embodiment 1.
Specific embodiment described herein is only to give an example to the design of the utility model.The utility model
Person of ordinary skill in the field can make various modifications or additions to the described embodiments or using class
As mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. a kind of power battery pack explosion-proof decompression device, including battery pack housing（1）And it is set to battery pack housing（1）On deflation
Hole（2）, it is characterised in that：In the air vent（2）External port on be covered with outer cover plate（3）, outer cover plate（3）Inside towards
Inside extend to form guide ring（4）, guide ring（4）Across air vent（2）Extend to battery pack housing（1）It is interior, and in air vent（2）
Edge be equipped with can drive guide ring（4）The resetting-mechanism of slid inward, close to outer cover plate（3）Guide ring（4）On set
There are several relief holes（6）, relief hole（6）Upper cover is equipped with waterproof ventilated membrane（7）, in battery pack housing（1）Chamber pressure effect
Lower outer cover plate（3）Drive guide ring（4）When being displaced outwardly, battery pack housing（1）Waterproof ventilated membrane is passed through in inner cavity（7）With battery pack
Shell（1）Exterior space is connected.
2. a kind of power battery pack explosion-proof decompression device according to claim 1, it is characterised in that：The battery pack housing
（1）Interior corresponding guide ring（4）Port levels extend outward to form flange（8）, resetting-mechanism is to be folded in flange（8）With it is corresponding
Air vent（2）Reset spring between interior side port edge（5）.
3. a kind of power battery pack explosion-proof decompression device according to claim 2, it is characterised in that：In the air vent
（2）Interior side port edge is equipped with annular pressure sensor（9）, annular pressure sensor（9）It is connected electrically in battery management system
On, reset spring（5）Outboard end be fixed on annular pressure sensor（9）On, reset spring（5）Inner end apical grafting right
The flange answered（8）On surface.
4. a kind of power battery pack explosion-proof decompression device according to claim 1, it is characterised in that：In the air vent
（2）Inner ring surface and guide ring（4）Between closed be clamped with inner seal ring（10）, with inner seal ring（10）Corresponding guide ring（4）
Outer ring surface is equipped with sealing ring locating slot（11）, inner seal ring（10）It is inlaid in sealing ring locating slot（11）It is interior.
5. a kind of power battery pack explosion-proof decompression device according to claim 4, it is characterised in that：The inner seal ring
（10）For fluoroplastics leather cup.
6. a kind of power battery pack explosion-proof decompression device according to claim 1, it is characterised in that：In the air vent
（2）Interior side port at be equipped with annular pressing plate（12）, annular pressing plate（12）Inner ring surface carry over air vent（2）Inner ring surface extend
Direction is towards battery pack housing（1）Inside extend to form baffle ring（13）.
7. a kind of power battery pack explosion-proof decompression device according to claim 1, it is characterised in that：Close to the deflation
Hole（2）The battery pack housing of exterior side port（1）Surface and outer cover plate（3）Between be folded with outer seal ring（14）.
8. a kind of power battery pack explosion-proof decompression device according to claim 1, it is characterised in that：In the relief hole
（6）External port at be equipped with counterbore（15）, waterproof ventilated membrane（7）Mat formation in counterbore（15）Bottom simultaneously passes through buckle-type pressure ring（16）
It is closed to be fixed on counterbore（15）It is interior.
9. a kind of power battery pack explosion-proof decompression device according to claim 1, it is characterised in that：The guide ring（4）
Outboard end be screwed on and be fixed on outer cover plate（3）On medial surface.
10. a kind of power battery pack explosion-proof decompression device according to claim 1, it is characterised in that：The resetting-mechanism
To be folded in battery pack housing（1）Outer surface and corresponding outer cover plate（3）Extension spring between inner surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820496764.8U CN208111552U (en) | 2018-04-09 | 2018-04-09 | A kind of power battery pack explosion-proof decompression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820496764.8U CN208111552U (en) | 2018-04-09 | 2018-04-09 | A kind of power battery pack explosion-proof decompression device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208111552U true CN208111552U (en) | 2018-11-16 |
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ID=64121007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820496764.8U Active CN208111552U (en) | 2018-04-09 | 2018-04-09 | A kind of power battery pack explosion-proof decompression device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208111552U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735949A (en) * | 2018-04-09 | 2018-11-02 | 浙江零跑科技有限公司 | A kind of power battery pack explosion-proof decompression device |
| WO2021027489A1 (en) * | 2019-08-15 | 2021-02-18 | 宁德时代新能源科技股份有限公司 | Cover assembly of secondary battery and secondary battery |
| CN115064833A (en) * | 2022-08-16 | 2022-09-16 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
-
2018
- 2018-04-09 CN CN201820496764.8U patent/CN208111552U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108735949A (en) * | 2018-04-09 | 2018-11-02 | 浙江零跑科技有限公司 | A kind of power battery pack explosion-proof decompression device |
| CN108735949B (en) * | 2018-04-09 | 2020-12-25 | 浙江零跑科技有限公司 | Explosion-proof pressure relief device of power battery package |
| WO2021027489A1 (en) * | 2019-08-15 | 2021-02-18 | 宁德时代新能源科技股份有限公司 | Cover assembly of secondary battery and secondary battery |
| US11916249B2 (en) | 2019-08-15 | 2024-02-27 | Contemporary Amperex Technology Co., Limited | Cover assembly of secondary battery and secondary battery |
| CN115064833A (en) * | 2022-08-16 | 2022-09-16 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| CN115064833B (en) * | 2022-08-16 | 2022-11-11 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Zero run Technology Co.,Ltd. Address before: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG LEAPMOTOR TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |