CN106505166B - Valve device, battery pack shell and electric automobile - Google Patents
Valve device, battery pack shell and electric automobile Download PDFInfo
- Publication number
- CN106505166B CN106505166B CN201611055461.4A CN201611055461A CN106505166B CN 106505166 B CN106505166 B CN 106505166B CN 201611055461 A CN201611055461 A CN 201611055461A CN 106505166 B CN106505166 B CN 106505166B
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- China
- Prior art keywords
- hole
- valve
- inner core
- battery pack
- valve inner
- 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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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4228—Leak testing of cells or 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a valve device, a battery pack shell and an electric automobile. The valve device includes: the air valve is fixedly connected with the battery can shell through an air valve nut; a stepped bore passing through the valve; the valve inner core is positioned in the step hole and forms a preset clearance with the inner wall of the step hole, a through hole is formed in the valve inner core, the first end of the through hole is positioned on the side wall of the valve inner core, and the second end of the through hole is positioned on the upper end face of the valve inner core; the elastic pressure plate is sleeved on the upper part of the valve inner core and is in contact connection with the step surface of the step hole; the inner core nut is positioned above the elastic pressing plate and sleeved on the valve inner core, and the inner core nut is in contact connection with the elastic pressing plate; and the gasket is sleeved at the lower part of the valve inner core and is matched with the structure at the lower part of the valve inner core. The invention can realize the sealing of the battery pack, can also realize the detection of the sealing performance of the battery pack, improves the detection efficiency and is convenient for searching the leakage position.
Description
Technical field
The present invention relates to electric automobile power battery system technical fields, more particularly to a kind of valve gear, battery pack
Shell and electric car.
Background technique
With the development of electric car, core component of the power battery as electric car, battery pack or battery
Leakproofness directly influence battery system work safety and electric car using safe.So the design of battery pack and close
The test of envelope property is just particularly important.
Currently, for battery pack sealing performance detection there are low efficiency, and the lookup of leak position is more difficult asks
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of valve gear, battery pack housing and electric cars, to solve existing skill
The detection efficiency of battery pack sealing performance is low in art, and the problem that the lookup for revealing position is difficult.
In order to solve the above-mentioned technical problem, the embodiment of the present invention adopts the following technical scheme that
A kind of valve gear, comprising:
The valve being fixedly connected by valve nut with battery pack housing；
Through the stepped hole of the valve；
In the stepped hole, and the valve inner core with the inner wall of stepped hole formation prepsetting gap, the valve
Through-hole is provided on inner core, the first end of the through-hole is located at the side wall of the valve inner core, and the second end of the through-hole is located at
The upper surface of the valve inner core；
It is sheathed on the top of the valve inner core, and the spring bearer plate connected with the step surface of the stepped hole；
Above the spring bearer plate, and the inner core nut being sheathed on the valve inner core, the inner core nut with
The spring bearer plate connects；
It is sheathed on valve inner core lower part, and the washer matched with the structure of the lower part of the valve inner core.
Wherein, the first end of the through-hole is located at the lower section of the spring bearer plate.
Wherein, the structure on the top of the valve inner core is cylindrical body, and the through-hole includes: that first through hole and second are logical
Hole；
The first through hole and second through-hole extend upwardly to the cylindrical body by the side wall of the cylindrical body
Upper surface；
The first end of the first through hole and the first end of second through-hole are respectively positioned on the side wall of the cylindrical body, and
It is symmetrical arranged；
The second end of the first through hole and the second end of second through-hole are overlapped, and are respectively positioned on the cylindrical body
Upper surface.
Wherein, the structure of the lower part of the valve inner core is round estrade；
The upper surface diameter of the round estrade is equal with the diameter of the cylindrical body；
The lower end surface diameter of the round estrade is greater than the upper surface diameter of the round estrade.
Wherein, annular protrusion is formed between the top of the valve inner core and the lower part of the valve inner core.
Wherein, the stepped hole includes: the first hole portion and the second hole portion for being connected with first hole portion, first hole
The diameter in portion is greater than the diameter of second hole portion；
The junction of second hole portion and first hole portion is formed with the step surface.
Wherein, the hole depth of the stepped hole is greater than the height of the valve inner core.
Wherein, the washer is rubber washer.
The present invention also provides a kind of battery pack housings, comprising: valve gear as described above.
The present invention also provides a kind of electric cars, comprising: battery pack housing as described above.
The advantageous effects of the above technical solutions of the present invention are as follows:
In the above scheme of the embodiment of the present invention, by the way that valve gear is arranged on battery pack housing, not to battery pack
When being inside filled with gas, under the action of the elastic force of spring bearer plate, so that valve inner core and valve are fitted close by washer, realize
The sealing of battery pack；In the through-hole by being arranged on valve inner core, it can be achieved that battery pack when being filled with gas into battery pack
Sealing performance detection, improve detection efficiency, facilitate leakage position lookup.
Detailed description of the invention
Fig. 1 is the sectional view of the valve gear of the embodiment of the present invention；
Fig. 2 is the explosive view of Fig. 1；
Fig. 3 is the structural schematic diagram of Fig. 1
Description of symbols:
1- valve nut；2- battery pack housing；3- valve；4- stepped hole；5- valve inner core；6- spring bearer plate；7- inner core
Nut；8- washer；9- annular protrusion；51- first through hole；The second through-hole of 52-.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
As shown in Figure 1-3, the invention discloses a kind of valve gears, comprising: pass through valve nut 1 and battery pack housing 2
The valve 3 being fixedly connected；
Here, one opening of setting on battery pack housing 2, the opening for the bottom of valve 3 for passing through, with battery pack housing
2 inner wall fits closely.Namely the bottom of valve 3 is located in battery pack housing 2, in this way, passing through convenient for external pressurized device
Gas is filled with into battery pack with the valve gear that can be connected to inside battery pack.
Through the stepped hole 4 of valve 3；In stepped hole 4, and the valve with the inner wall of stepped hole 4 formation prepsetting gap
Inner core 5；
Wherein, it is provided with through-hole on valve inner core 5, the first end of through-hole is located at the side wall of valve inner core 5, and the second of through-hole
End is located at the upper surface of valve inner core 5；
Here, the through-hole being arranged on valve inner core 5 passes through the through-hole to electricity as gas passage, for external pressurized device
Gas is filled in the packet of pond.
It is sheathed on the top of valve inner core 5, and the spring bearer plate 6 connected with the step surface of stepped hole 4；
Here, spring bearer plate 6 is for valve inner core 5 to be erected in valve 3, and the step surface of stepped hole 4 is to spring bearer plate 6
And certain supporting role is played together with valve inner core 5.
Above spring bearer plate 6, and the inner core nut 7 being sheathed on valve inner core 5, inner core nut 7 and spring bearer plate 6
It connects；The washer 8 for being sheathed on the lower part of valve inner core 5, and being matched with the structure of the lower part of valve inner core 5.
What needs to be explained here is that as shown in Figure 1,6 deformation of spring bearer plate, which generates, hinders bullet after inner core nut 7 is tightened
Property 6 deformation of pressing plate upward elastic force, at this point, valve inner core 5, under force to battery pack out-draw, valve inner core 5 is pressed
Valve inner core 5 and valve 3 are fitted close by contracting washer 8, realize the holding of pressure in the sealing and battery pack of battery pack.Also
It is to say, washer 8 at this time plays sealing function.
Specifically, the first end of through-hole is located at the lower section of spring bearer plate 6.
Here it should be noted that, the first end of through-hole is located at the lower section of spring bearer plate 6, it is therefore an objective to logical in external pressurizing device
When crossing through-hole inflation, gas is from the second end of through-hole into first brings out, and enters by spring bearer plate 6, valve inner core 5 and gas
In the gas chamber that door 3 is formed.
Preferably, as shown in Figures 1 and 2, the structure on the top of valve inner core 5 is cylindrical body, and through-hole includes: first through hole
51 and second through-hole 52.
Here, first through hole 51 and the second through-hole 52 extend upwardly to the upper of the cylindrical body by the side wall of the cylindrical body
End face；The first end of first through hole 51 and the first end of the second through-hole 52 are respectively positioned on the side wall of the cylindrical body, and are symmetrical arranged；
The second end of first through hole 51 and the second end of the second through-hole 52 are overlapped, and are respectively positioned on the upper surface of the cylindrical body.
What needs to be explained here is that as the through-hole of gas passage in the embodiment of the present invention, which has a gas
Import, two gas vents.Here, gas feed is located at the upper surface of the cylindrical body, and gas vent is located at the side of the cylindrical body
Wall, and be symmetrical arranged, that is, first through hole 51 and the second through-hole 52.
Preferably, as shown in Figures 1 and 2, the structure of the lower part of valve inner core 5 is round estrade；The upper surface of the round estrade
Diameter is equal with the diameter of cylindrical body；The lower end surface diameter of the round estrade is greater than the upper surface diameter of the round estrade.
Here, as shown in Fig. 2, being set in the structure of the washer 8 of the lower part of valve inner core 5 and the round estrade matches.
Specifically, being formed with annular protrusion 9 between the top of valve inner core 5 and the lower part of valve inner core 5.
Here, annular protrusion 9 plays position-limiting action, can limit the installation site of washer 8 and towards the upper of valve inner core 5
The moveable distance in portion direction.
More specifically, stepped hole 4 includes: the first hole portion and the second hole portion for being connected with first hole portion, and described first
The diameter of hole portion is greater than the diameter of second hole portion；The junction of second hole portion and first hole portion is formed with step
Face.
Here it should be noted that, the first hole portion and the second hole portion are arranged along the top of valve 3 sequence.
Here, when using the preferred structure of valve inner core 5 of the invention, as shown in Figure 1, the structure and gas of the second hole portion
Door inner core 5 match, i.e., the top half of the second hole portion be diameter less than the first hole portion cylindrical hole, lower half portion be diameter by
Cumulative big round platform hole.Here, the diameter of the circular hole of the lower end surface of the second hole portion is straight less than or equal to the circular hole of the first hole portion
Diameter.
Specifically, the hole depth of stepped hole 4 is greater than the height of valve inner core 5.In this way, not influencing and being conducive to outside battery pack
Electric car on other components layout designs.
Preferably, the washer 8 of the embodiment of the present invention is rubber washer.
The process that the sealing propertytest of battery pack is carried out using the valve gear is specifically described below.
Firstly, gas is filled in the through-hole of valve inner core 5 using external pressurized device, at this point, valve 3, valve inner core
Gas chamber is formed between 5 and spring bearer plate 6.
The gas pressure being filled with when gas is indoor hinders the upward of its deformation greater than what spring bearer plate 6 generated when deformation occurs
Elastic force when, open valve inner core 5, the sealant that valve 3 and washer 8 are formed, inflated into battery pack.
When detecting that the pressure in gas chamber and battery pack reaches balance, that is, reach predetermined pressure in battery pack, this
When, since the pressure in battery pack is greater than the pressure outside battery pack, the round estrade structure of the lower part of valve inner core 5 in addition can be real
Now valve is self-locking, while the pressing force of inner core nut 7 and spring bearer plate 6 acts on, and can be further ensured that the self-locking of valve, also
It is to re-form sealant between valve inner core 5, valve 3 and washer 8.
Here, it after a period of time, detects again, if the pressure in battery pack is still greater than the pressure outside battery pack, illustrates electricity
Leakproofness in the packet of pond is good；If the pressure in battery pack is equal to the pressure outside battery pack, illustrate the leakproofness in battery pack
Difference.
Certainly, being filled into the gas inside battery pack by external pressurized device can be coloured innocuous gas, if
Observing has the coloured gas of the tool to drill out out of shell on battery pack housing 2, then illustrates that the leakproofness in battery pack is poor, and
And the specific leakage position of battery pack can be found out to intuitive and convenient in this way.
The embodiment of the present invention also provides a kind of battery pack housing, an opening is provided with, including as described in above-described embodiment
The bottom of valve gear, the valve gear is contacted by the opening with the inner wall of battery pack housing.
The embodiment of the present invention also provides a kind of electric car, including the battery pack housing as described in above-described embodiment.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of valve gear characterized by comprising
The valve (3) being fixedly connected by valve nut (1) with battery pack housing (2)；
Stepped hole (4) through the valve (3)；
In the stepped hole (4), and the valve inner core (5) with the inner wall of the stepped hole (4) formation prepsetting gap, it is described
Through-hole is provided on valve inner core (5), the first end of the through-hole is located at the side wall of the valve inner core (5), the through-hole
Second end is located at the upper surface of the valve inner core (5)；
It is sheathed on the top of the valve inner core (5), and the spring bearer plate connected with the step surface of the stepped hole (4)
(6)；
Above the spring bearer plate (6), and the inner core nut (7) being sheathed on the valve inner core (5), the inner core spiral shell
Female (7) and the spring bearer plate (6) connect；
It is sheathed on the lower part of the valve inner core (5), and the washer matched with the structure of the lower part of the valve inner core (5)
(8)。
2. valve gear according to claim 1, which is characterized in that the first end of the through-hole is located at the spring bearer plate
(6) lower section.
3. valve gear according to claim 1, which is characterized in that the structure on the top of the valve inner core (5) is circle
Cylinder, the through-hole include: first through hole (51) and the second through-hole (52)；
The first through hole (51) and second through-hole (52) extend upwardly to the circle by the side wall of the cylindrical body
The upper surface of cylinder；
The first end of the first through hole (51) and the first end of second through-hole (52) are respectively positioned on the side of the cylindrical body
Wall, and be arranged about the axisymmetrical of the cylindrical body；
The second end of the first through hole (51) and the second end of second through-hole (52) are overlapped, and are respectively positioned on the cylinder
The upper surface of body.
4. valve gear according to claim 3, which is characterized in that the structure of the lower part of the valve inner core (5) is circle
Stage body；
The upper surface diameter of the round estrade is equal with the diameter of the cylindrical body；
The lower end surface diameter of the round estrade is greater than the upper surface diameter of the round estrade.
5. valve gear according to claim 1, which is characterized in that the top of the valve inner core (5) and the valve
Annular protrusion (9) are formed between the lower part of inner core (5).
6. valve gear according to claim 1, which is characterized in that the stepped hole (4) include: the first hole portion and with institute
The second connected hole portion of the first hole portion is stated, the diameter of first hole portion is greater than the diameter of the top half of second hole portion,
The diameter of first hole portion is more than or equal to the diameter of the lower end surface of second hole portion；
The junction of second hole portion and first hole portion is formed with the step surface.
7. valve gear according to claim 1, which is characterized in that the hole depth of the stepped hole (4) is greater than the valve
The height of inner core (5).
8. valve gear according to claim 1, which is characterized in that the washer (8) is rubber washer.
9. a kind of battery pack housing characterized by comprising valve gear as described in any one of claims 1 to 8.
10. a kind of electric car characterized by comprising battery pack housing as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611055461.4A CN106505166B (en) | 2016-11-25 | 2016-11-25 | Valve device, battery pack shell and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611055461.4A CN106505166B (en) | 2016-11-25 | 2016-11-25 | Valve device, battery pack shell and electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106505166A CN106505166A (en) | 2017-03-15 |
| CN106505166B true CN106505166B (en) | 2019-03-15 |
Family
ID=58328853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611055461.4A Active CN106505166B (en) | 2016-11-25 | 2016-11-25 | Valve device, battery pack shell and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106505166B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216912B (en) * | 2020-01-20 | 2022-04-29 | 蜂巢能源科技有限公司 | Battery, battery pack, and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476943U (en) * | 2009-06-26 | 2010-05-19 | 厦门永裕机械工业有限公司 | Seal detection clamp of sealed container |
| CN102097603A (en) * | 2011-01-12 | 2011-06-15 | 合肥国轩高科动力能源有限公司 | Lithium ion battery cover plate |
| CN201877473U (en) * | 2010-11-30 | 2011-06-22 | 襄樊金博泰塑业有限公司 | Cover plate for lithium battery |
| CN203932167U (en) * | 2014-06-23 | 2014-11-05 | 中航锂电（洛阳）有限公司 | The detachable safety valve of electrokinetic cell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0799045A (en) * | 1993-09-29 | 1995-04-11 | Hitachi Maxell Ltd | Square sealed storage battery |
| JPH097558A (en) * | 1995-06-16 | 1997-01-10 | Furukawa Battery Co Ltd:The | Manufacture of sealed battery |
-
2016
- 2016-11-25 CN CN201611055461.4A patent/CN106505166B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201476943U (en) * | 2009-06-26 | 2010-05-19 | 厦门永裕机械工业有限公司 | Seal detection clamp of sealed container |
| CN201877473U (en) * | 2010-11-30 | 2011-06-22 | 襄樊金博泰塑业有限公司 | Cover plate for lithium battery |
| CN102097603A (en) * | 2011-01-12 | 2011-06-15 | 合肥国轩高科动力能源有限公司 | Lithium ion battery cover plate |
| CN203932167U (en) * | 2014-06-23 | 2014-11-05 | 中航锂电（洛阳）有限公司 | The detachable safety valve of electrokinetic cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106505166A (en) | 2017-03-15 |
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