CN208298910U - A kind of battery pack explosion-proof valve - Google Patents
A kind of battery pack explosion-proof valve Download PDFInfo
- Publication number
- CN208298910U CN208298910U CN201820927564.3U CN201820927564U CN208298910U CN 208298910 U CN208298910 U CN 208298910U CN 201820927564 U CN201820927564 U CN 201820927564U CN 208298910 U CN208298910 U CN 208298910U
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof valve
- battery pack
- valve body
- connector sleeve
- 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.)
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Classifications
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides a kind of battery pack explosion-proof valve, belong to battery protection equipment technical field, including the explosion-proof valve body as made from injection molding, the explosion-proof valve body is square frame structure, the explosion-proof valve body is equipped with protection cap close to one end of battery pack, multiple second stomatas are provided in the protection cap, the middle part of the explosion-proof valve body is through setting through-hole, connector sleeve is equipped in through-hole, multiple drainage holes are offered on the connector sleeve, the connector sleeve is welded with waterproof ventilated membrane close to one end of battery pack, the other end welding of the connector sleeve has protective cover, the weakening structure being broken when the connector sleeve is by reaching preset limit pressure connects the explosion-proof valve body.When the pressure in battery pack reaches the limiting pressure of explosion-proof valve, weakening structure falls off with explosion-proof valve body to be separated, i.e., waterproof ventilated membrane falls off while protective cover falls off, and timely abundant pressure release avoids battery pack from exploding.
Description
Technical field
The utility model belongs to battery protection equipment technical field, is to be related to a kind of battery pack explosion-proof valve more specifically.
Background technique
Currently, battery pack mainly uses explosion-proof valve as the explosion-protection equipment of battery, the gas inside battery heating, battery pack
Body expansion, battery pack internal pressure increase, rupture pressure disc desoldering, rupture when reaching a certain level in explosion-proof valve, deflation pressure release, to keep away
Exempt from battery pack explosion.But when the temperature heating in battery pack is very fast, when pressure value increases rapidly, though rupture pressure disc has fallen off, by
It cannot still deflate immediately pressure release in battery pack, explosion-proof valve pressure release not in time, is exploded so as to cause battery pack.
In addition, battery pack explosion-proof valve generallys use the structure mounted and dismounted inside battery pack, needed when explosion-proof valve damages
When replacing or needing to be serviced cleaning, needing to open battery pack could disassemble explosion-proof valve and reinstall, and one
Aspect increases operating time and the step of maintenance, another aspect battery pack assemble and disassemble each time will affect that it connects bolt can
By property, the overall performance of battery pack is influenced.
Utility model content
The purpose of this utility model is to provide a kind of battery pack explosion-proof valves, it is intended to solve explosion-proof valve pressure release asking not in time
Topic.
In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of battery pack explosion-proof valve, including logical
Explosion-proof valve body made from injection molding is crossed, the explosion-proof valve body is square frame structure, and the explosion-proof valve body is close to electricity
One end of Chi Bao is equipped with protection cap, is provided with multiple second stomatas in the protection cap, the middle part of the explosion-proof valve body is run through
Through-hole is set, connector sleeve is equipped in through-hole, offers multiple drainage holes on the connector sleeve, the connector sleeve is close to battery pack
One end is welded with waterproof ventilated membrane, and the other end welding of the connector sleeve has protective cover, and the connector sleeve is by reaching predetermined pole
The weakening structure being broken when limits pressure connects the explosion-proof valve body.
A further technical solution lies in: the explosion-proof valve bodies be provided with close to one end of battery pack it is explosion-proof for closing
The sealing joint strip of valve and battery pack.
A further technical solution lies in: four side wall middle sections of explosion-proof valve body offer drainage hole, explosion-proof valve master
The quadrangle of body opens up the mounting hole for connecting battery pack housing, and the copper for being equipped with battery pack is embedded in the mounting hole
Set.
A further technical solution lies in: the cross sections of the copper sheathing constantly to become larger from centre to both ends, avoid copper sheathing from
It falls off in mounting hole.
A further technical solution lies in: the outside projection in four side wall both ends of the explosion-proof valve body is for being clamped inspection
Survey the fixture block of the cubing of battery pack leakproofness.
A further technical solution lies in: it is provided with multiple first stomatas on the protective cover, makes the gas in explosion-proof valve
Discharge.
Include a further technical solution lies in: the weakening structure and the connecting plate of the explosion-proof valve body welding and opens
It is located at the reduction slot of the V-type on the connecting plate.
A kind of beneficial effect of battery pack explosion-proof valve provided by the utility model is:
Compared with prior art, when the pressure in battery pack is lower than limiting pressure, the pressed gas in battery pack is penetrated
Waterproof ventilated membrane pressure release；When the pressure in battery pack reaches the limiting pressure of explosion-proof valve, weakening structure and explosion-proof valve body are de-
Separation is fallen, i.e., waterproof ventilated membrane falls off while protective cover falls off, and timely abundant pressure release avoids battery pack from exploding.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram after the assembly of the utility model；
Fig. 3 is the enlarged view of E in Fig. 2.
In figure: 1, explosion-proof valve body；2, protective cover；3, waterproof ventilated membrane；4, protection cap；5, sealing joint strip；6, mounting hole；
7, copper sheathing；8, the first stomata；9, drainage hole；10, fixture block；11, the second stomata；12, weakening structure；13, it is clamped flange；14, even
Female connector；15, connecting plate；16, slot is weakened.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
Fig. 1-Fig. 3 is please referred to, now a kind of battery pack explosion-proof valve provided by the utility model is illustrated.
A kind of battery pack explosion-proof valve, including explosion-proof valve body 1, connector sleeve 14, protective cover 2, waterproof ventilated membrane 3 and
Protection cap 4.
The explosion-proof valve body 1 is frame-shaped structure, and cross section is square structure.The explosion-proof valve master of frame-shaped structure
It is divided into multiple cavities inside body 1, by material local reduction, reduces cost.The quadrangle of explosion-proof valve body 1 opens up a mounting hole respectively
6, the pitch-row between the mounting hole 6 of explosion-proof valve is equal, is not necessarily to anti-antistructure, installs convenient for quick aligning.Mounting hole 6 is through anti-
The through-hole of quick-fried valve body 1, the copper sheathing 7 made of the copper material in mounting hole 6, copper material have very strong inoxidizability and thermally conductive
Property, can effectively prevent corroding, while can conduct the temperature of battery pack and explosion-proof valve in time, the cross section of copper sheathing 7 from middle part to
Its both ends constantly increases, and the copper sheathing 7 being fastened in mounting hole 6 is made to keep stablizing.The centre bore of copper sheathing 7 leads to for wearing bolt
The upper cover for being bolted battery pack is crossed, so that explosion-proof valve body 1 be made to be fixedly connected in battery pack.
The middle part of explosion-proof valve body 1 is arranged in through-hole through setting through-hole, connector sleeve 14, and connector sleeve 14 is cylindrical shape,
Connector sleeve 14 is welded with waterproof ventilated membrane 3 close to one end of battery pack, and waterproof ventilated membrane 3, which uses, has waterproof and breathable characteristic
PTFE material is made, and waterproof ventilated membrane 3 is used for the gas being discharged in battery pack, and the other end grafting or welding of connector sleeve 14 have anti-
Protecting cover 2 is provided with multiple first stomatas 8 on protective cover 2, and first stomata 8 can be the through-hole of the shapes such as circle, rectangle, the
One stomata 8 is convenient for the gas discharge in explosion-proof valve.Connector sleeve 14 is by weakening structure 12 and explosion-proof valve body 1 close to battery pack
One end welding is fixed, and weakening structure 12 is the connecting plate 15 that cross section is circular ring shape, and the inside of connecting plate 15 and connector sleeve 14 are molten
Fixation is connect, the outside of connecting plate 15 and the inner wall welding of the through-hole of explosion-proof valve body 1 are fixed, and annular is offered on connecting plate 15
Slot 16 is weakened, the cross section of the reduction slot 16 is V-arrangement, when the pressure of battery pack reaches preset limit pressure, weakens slot 16
Fracture, protective cover 2 and waterproof ventilated membrane 3 fall off simultaneously.
Four drainage holes 9 are also uniformly opened up on the barrel of connector sleeve 14, drainage hole 9 connects the inside and outside of connector sleeve 14
Logical, once there is water to enter between waterproof ventilated membrane 3 and protective cover 2, water can be discharged out of lower end drainage hole 9, prevent
Ponding in quick-fried valve is not excluded for for a long time and damages waterproof ventilated membrane 3, it is made to reduce or lose the function of waterproof and breathable.
The protection cap 4 is circular configuration, is fixed on a side end face of the close battery pack of explosion-proof valve body 1, and setting exists
Between waterproof ventilated membrane 3 and battery pack and it is provide with waterproof ventilated membrane 3, protection cap 4 can protect waterproof ventilated membrane 3, avoid other objects
Product are accidentally into destroy waterproof ventilated membrane 3, offering multiple second stomatas 11 in explosion-proof valve body 1 in protection cap 4, and second
Stomata 11 can be the through-hole of the shapes such as circle, rectangle, and the gas in battery pack is made to enter explosion-proof valve.The explosion-proof valve body 1 leans on
The side of nearly battery pack is additionally provided with annular groove, and sealing joint strip 5 is provided in groove, and when explosion-proof valve is installed, sealing joint strip 5 is pressed
Tightly between explosion-proof valve and battery pack, guarantee the leakproofness of explosion-proof valve and battery pack.
Four side walls of explosion-proof valve body 1, which outwardly protrude, is provided with fixture block 10, and the both ends of each side wall are respectively symmetrically melted
A fixture block 10 is connect, fixture block 10 is used to be clamped the cubing of detection battery pack leakproofness.
The use process of the utility model are as follows:
Bolt is worn in the copper sheathing 7 of explosion-proof valve body 1, the other end of bolt is tightened against on the upper lid of battery pack, is made explosion-proof
Valve is directly installed on the outside of battery pack, convenient for the maintenance and maintenance of explosion-proof valve.
When pressure value in battery pack is less than 20KPa, waterproof ventilated membrane 3 is to battery pack deflation pressure release；If in battery pack
Pressure continues to increase, and when pressure value is more than or equal to 20KPa, waterproof ventilated membrane 3 has been unable to meet pressure release requirement, at this time connecting plate 15
On reduction slot 16 be broken, to make the protection cap 2 connecting with weakening structure 12 and waterproof ventilated membrane 3 from explosion-proof valve body 1
It falls off, guarantees the timely pressure release of explosion-proof valve, battery pack is avoided to explode.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (7)
1. a kind of battery pack explosion-proof valve, it is characterised in that: described anti-including explosion-proof valve body (1) as made from injection molding
Quick-fried valve body (1) is square frame structure, and the explosion-proof valve body (1) is equipped with protection cap (4) close to one end of battery pack, described
The middle part that multiple second stomatas (11) explosion-proof valve body (1) is provided in protection cap (4) is set in setting through-hole, through-hole
Have connector sleeve (14), is offered multiple drainage holes (9) on the connector sleeve (14), the one of the close battery pack of the connector sleeve (14)
End is welded with waterproof ventilated membrane (3), and the other end welding of the connector sleeve (14) has protective cover (2), and the connector sleeve (14) is logical
It crosses the weakening structure (12) being broken when reaching preset limit pressure and connects the explosion-proof valve body (1).
2. a kind of battery pack explosion-proof valve as described in claim 1, it is characterised in that: the explosion-proof valve body (1) is close to battery
One end of packet is provided with the sealing joint strip (5) for closing explosion-proof valve and battery pack.
3. a kind of battery pack explosion-proof valve as described in claim 1, it is characterised in that: open the quadrangle of the explosion-proof valve body (1)
If the mounting hole (6) for connecting battery pack housing, the copper sheathing (7) for being equipped with battery pack is embedded in the mounting hole (6).
4. a kind of battery pack explosion-proof valve as claimed in claim 3, it is characterised in that: the cross section of the copper sheathing (7) is certainly intermediate
Constantly become larger to both ends.
5. a kind of battery pack explosion-proof valve according to any one of claims 1-4, it is characterised in that: the four of explosion-proof valve body (1)
A outside projection in side wall both ends is used to be clamped the fixture block (10) of the cubing of detection battery pack leakproofness.
6. a kind of battery pack explosion-proof valve as described in claim 1, it is characterised in that: be provided on the protective cover (2) multiple
First stomata (8).
7. a kind of battery pack explosion-proof valve as described in claim 1, it is characterised in that: the weakening structure (12) include with it is described
The connecting plate (15) of explosion-proof valve body (1) welding and the reduction slot (16) for the V-arrangement being provided on the connecting plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820927564.3U CN208298910U (en) | 2018-06-15 | 2018-06-15 | A kind of battery pack explosion-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820927564.3U CN208298910U (en) | 2018-06-15 | 2018-06-15 | A kind of battery pack explosion-proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208298910U true CN208298910U (en) | 2018-12-28 |
Family
ID=64701505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820927564.3U Active CN208298910U (en) | 2018-06-15 | 2018-06-15 | A kind of battery pack explosion-proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208298910U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109920953A (en) * | 2019-03-27 | 2019-06-21 | 蜂巢能源科技有限公司 | Battery pack explosion-proof valve, battery pack and vehicle |
| CN113646961A (en) * | 2019-02-12 | 2021-11-12 | 雨果-本兹有限两合公司 | Pressure relief valve for reducing the pressure generated in a chamber-like cavity, such as a battery block |
| EP3916899A1 (en) * | 2020-05-26 | 2021-12-01 | MANN+HUMMEL GmbH | Degassing unit and electronics enclosure, in particular battery housing |
| WO2021253354A1 (en) * | 2020-06-18 | 2021-12-23 | 东莞新能安科技有限公司 | Explosion-proof valve, battery set shell with explosion-proof valve, and battery set |
| CN114069148A (en) * | 2020-07-30 | 2022-02-18 | 哲弗智能***（上海）有限公司 | Explosion-proof valve and calculation method of flow area of injection structure |
| EP3937300A4 (en) * | 2020-02-28 | 2022-09-14 | Contemporary Amperex Technology Co., Limited | Explosion-proof valve, battery pack, and apparatus |
| EP4184688A4 (en) * | 2021-09-28 | 2024-02-07 | Contemporary Amperex Technology Co., Limited | Exhaust device, battery cell, battery and electric device |
-
2018
- 2018-06-15 CN CN201820927564.3U patent/CN208298910U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113646961A (en) * | 2019-02-12 | 2021-11-12 | 雨果-本兹有限两合公司 | Pressure relief valve for reducing the pressure generated in a chamber-like cavity, such as a battery block |
| CN113646961B (en) * | 2019-02-12 | 2023-11-07 | 雨果-本兹有限两合公司 | Relief valve for reducing pressure generated in a chamber-like cavity, such as a battery block |
| CN109920953A (en) * | 2019-03-27 | 2019-06-21 | 蜂巢能源科技有限公司 | Battery pack explosion-proof valve, battery pack and vehicle |
| EP3937300A4 (en) * | 2020-02-28 | 2022-09-14 | Contemporary Amperex Technology Co., Limited | Explosion-proof valve, battery pack, and apparatus |
| EP3916899A1 (en) * | 2020-05-26 | 2021-12-01 | MANN+HUMMEL GmbH | Degassing unit and electronics enclosure, in particular battery housing |
| US11811085B2 (en) | 2020-05-26 | 2023-11-07 | Mann+Hummel Gmbh | Degassing unit and electronics housing, in particular battery housing |
| WO2021253354A1 (en) * | 2020-06-18 | 2021-12-23 | 东莞新能安科技有限公司 | Explosion-proof valve, battery set shell with explosion-proof valve, and battery set |
| CN114069148A (en) * | 2020-07-30 | 2022-02-18 | 哲弗智能***（上海）有限公司 | Explosion-proof valve and calculation method of flow area of injection structure |
| EP4184688A4 (en) * | 2021-09-28 | 2024-02-07 | Contemporary Amperex Technology Co., Limited | Exhaust device, battery cell, battery and electric device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |