CN208336350U - Valve module, cap assemblies, secondary cell and battery modules - Google Patents
Valve module, cap assemblies, secondary cell and battery modules Download PDFInfo
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- CN208336350U CN208336350U CN201820849425.3U CN201820849425U CN208336350U CN 208336350 U CN208336350 U CN 208336350U CN 201820849425 U CN201820849425 U CN 201820849425U CN 208336350 U CN208336350 U CN 208336350U
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- body part
- gas vent
- valve module
- valve
- interconnecting piece
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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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Abstract
The utility model relates to a kind of for the valve module of energy storage device, cap assemblies, secondary cell and battery modules.Valve module includes: body part, and the body part is equipped with gas vent；And check valve, check valve include the interconnecting piece being connected with body part and the elastomeric seal portions that are connected with interconnecting piece；Wherein, interconnecting piece and gas vent interval are arranged, and elastomeric seal portions are set to the side of body part and covering gas vent, with seal vents, elastomeric seal portions are configured to respond to the pressure increase inside gas vent and deform, so that elastomeric seal portions and body part are detached from sealing state.Gas vent and check valve are separately provided on the body part that the valve module of the utility model includes, while the interconnecting piece interval of gas vent and check valve is arranged, and is conducive to the cross-sectional area size by being precisely controlled gas vent to control the deflation rate of gas vent.
Description
Technical field
The utility model relates to battery technology fields, more particularly to a kind of valve module, cap assemblies, secondary cell and electricity
Chi Mo group.
Background technique
With the development of modern social science technology, in order to solve fossil energy pollution problem, clean energy resource is gradually wide
General application.In clean energy resource, secondary cell is due to having many advantages, such as that voltage is high, energy density is high, pollution-free being made extensively
With especially in power battery field, the demand of secondary cell is increasing.Secondary cell is needed in process of production toward battery
Inside injection electrolyte, then could normal use by battery after formation process.But secondary cell in formation process or
It is internal in the subsequent use process of person to generate a certain amount of gas, if be discharged not in time, it will cause secondary cell and expand
Deformation is exploded.
Utility model content
The utility model embodiment provides a kind of valve module, cap assemblies, secondary cell and battery modules.Valve module includes
Body part on be separately provided gas vent and check valve, while the interconnecting piece interval of gas vent and check valve is arranged, favorably
In the deflation rate for controlling gas vent by the cross-sectional area size for being precisely controlled gas vent.
On the one hand, the utility model embodiment proposes a kind of valve module for energy storage device comprising: body part,
The body part is equipped with gas vent；And check valve, check valve include the interconnecting piece being connected with body part and and interconnecting piece
The elastomeric seal portions being connected；Wherein, interconnecting piece and gas vent interval are arranged, elastomeric seal portions be set to the side of body part and
Gas vent is covered, with seal vents, elastomeric seal portions are configured to respond to the pressure increase inside gas vent and deform, so that
Elastomeric seal portions and body part are detached from sealing state.
According to the one aspect of the utility model embodiment, interconnecting piece is set on elastomeric seal portions towards the one of body part
Side；It is equipped with recess portion towards the surface of body part on elastomeric seal portions, to form chamber, chamber between elastomeric seal portions and body part
Room is connected with gas vent.
According to the one aspect of the utility model embodiment, elastomeric seal portions extend towards the direction close to body part and with this
Angle between body portion is acute angle.
According to the one aspect of the utility model embodiment, body part be equipped with the spaced installation through-hole of gas vent,
Interconnecting piece and body part are tightly connected to seal installation through-hole.
According to the one aspect of the utility model embodiment, interconnecting piece include the connecting column that is connected with elastomeric seal portions with
And it is set to the flange of connecting column outer peripheral surface, connecting column is plugged in installation through-hole and flange is contacted with body part.
According to the one aspect of the utility model embodiment, installation through-hole includes the first hole section and the second hole section, the first hole
Less than the diameter of the second hole section, flange contacts the diameter of section with the sealing bottom surface of the second hole section.
According to the one aspect of the utility model embodiment, the diameter of gas vent is 1 micron to 1 millimeter.
According to valve module provided by the embodiment of the utility model, by the way that gas vent and unidirectional is arranged simultaneously on body part
Valve come have the function that one-way conduction be vented.Be separately provided gas vent and check valve on body part, at the same gas vent with
The interconnecting piece interval of check valve is arranged, so that the pore size of gas vent not will receive the influence of interconnecting piece, is conducive to pass through essence
Standard controls the cross-sectional area size of gas vent to control the deflation rate of gas vent, and the deflation rate of poppet valve assembly controls essence
Degree.
On the other hand, the utility model embodiment provides a kind of cap assemblies for energy storage device, which is characterized in that packet
It includes cover board and valve module as described above, valve module is set to cover board.
According to the other side of the utility model embodiment, cover board and body part are an integral structure.
According to the other side of the utility model embodiment, cap assemblies further include the explosion-proof valve being set on cover board, are prevented
The burst pressure of quick-fried valve is greater than the predetermined opening pressure of check valve.
According to the other side of the utility model embodiment, cap assemblies further include first electrode terminal, second electrode end
Son and rotating sheet, first electrode terminal are electrically connected with cover board, and second electrode terminal and cover board insulate, and rotating sheet attaches to lid
Plate, check valve and rotating sheet interval are arranged, and the predetermined eversion pressure of rotating sheet is greater than the predetermined opening pressure of check valve and is less than
The burst pressure of explosion-proof valve.
Another aspect, the utility model embodiment provide a kind of secondary cell, which is characterized in that including as described above
Cap assemblies.
Another aspect, the utility model embodiment provide a kind of battery modules, which is characterized in that including as described above
Cap assemblies.
Detailed description of the invention
The feature, advantage and technical effect of the utility model exemplary embodiment described below with reference to the accompanying drawings.
Fig. 1 is the schematic cross-sectional view of the valve module of an embodiment of the present invention；
Fig. 2 is the schematic cross-sectional view of the valve module of another embodiment of the utility model；
Fig. 3 is the schematic cross-sectional view of the cap assemblies of an embodiment of the present invention；
Fig. 4 is enlarged drawing at A in Fig. 3；
Fig. 5 is the schematic cross-sectional view of the secondary cell of an embodiment of the present invention；
Fig. 6 is the schematic cross-sectional view of the battery modules of an embodiment of the present invention；
Fig. 7 is enlarged drawing at B in Fig. 6.
In the accompanying drawings, the attached drawing is not drawn according to the actual ratio.
Description of symbols:
1, valve module；11, body part；111, gas vent；111a, axis；112, installation through-hole；12, check valve；121, even
Socket part；121a, connecting column；121b, flange；121c, guiding stern post；122, elastomeric seal portions；123, recess portion；α, angle；
2, cap assemblies；21, cover board；22, explosion-proof valve；23, first electrode terminal；24, second electrode terminal；25, rotating sheet；
3, shell；
4, electrode assembly；
5, cabinet；
6, secondary cell.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
The detailed description and the accompanying drawings for illustratively illustrating the principles of the present invention, but cannot be used to limit the model of the utility model
It encloses, i.e., the utility model is not limited to described embodiment.
In the description of the present invention, it should be noted that unless otherwise indicated, the meaning of " plurality " is two or two
More than a；The instructions such as term " on ", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion "
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.In addition, term " first ", " second " etc. are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art,
Visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model in order to better understand, below with reference to Fig. 1 and Fig. 2 to the valve module 1 of the utility model embodiment
It is described in detail, but following embodiment does not limit the protection scope of the utility model claims.
Valve module 1 provided by the embodiment of the utility model being capable of one-way conduction gas.Especially in rechargeable battery field,
The valve module 1 of the utility model embodiment can be used in the energy storage devices such as secondary cell or battery modules.Below the utility model
Embodiment be only illustrated by taking the secondary cell or battery modules that use valve module 1 as an example, but the utility model embodiment
Valve module 1 application be not limited to embodiment below, also can be applied in other field, and it is protected.
When the valve module 1 of the utility model embodiment is applied to secondary cell, the secondary cell of the utility model embodiment
It is practical new including shell, the sheet for being set to the intracorporal electrode assembly of shell, closing the cap assemblies of shell and being set on cap assemblies
The valve module 1 of type embodiment.When air pressure increases and is more than predetermined pressure in the shell of secondary cell, valve module 1 can be opened
It opens with exhaust pressure relief, so that enclosure interior pressure reduction.
When the valve module 1 of the utility model embodiment is applied to battery modules, the battery modules of the utility model embodiment
It is practical new including cabinet, secondary cell arranged in the box body, the cap assemblies of closed box and the sheet that is set on cap assemblies
The valve module 1 of type embodiment.When air pressure increases and is more than predetermined pressure in the cabinet of battery modules, valve module 1 can be opened
It opens with exhaust pressure relief, so that box house pressure reduction.
Fig. 1 schematically shows the sectional structure of the valve module 1 of an embodiment of the present invention.As shown in Figure 1, valve group
Part 1 includes body part 11 and the check valve 12 being set on body part 11.Exhaust is provided on the body part 11 of the present embodiment
Hole 111.Gas vent 111 has axis 111a.Check valve 12 include the interconnecting piece 121 being connected with body part 11 and with connection
The elastomeric seal portions 122 that portion 121 is connected.Interconnecting piece 121 and the interval of gas vent 111 are arranged.Here interval setting refers to
It does not overlap along the projection for being parallel to 111 the two of interconnecting piece 121 and gas vent on the direction axis 111a, but along vertical
In keeping preset distance to be arranged each other on the direction axis 111a.Elastomeric seal portions 122 are set to the side of body part 11 and covering
Gas vent 111, and it is in sealing contact with body part 11, with seal vents 111.It is parallel on the direction axis 111a on edge, elasticity
Gas vent 111 is completely covered in the projection of sealing 122.Elastomeric seal portions 122 are configured to respond to the pressure inside gas vent 111
Increase and deform, so that elastomeric seal portions 122 and body part 11 are detached from sealing state, thus the gas being discharged from gas vent 111
It can be smoothly discharged to outside.
The elastomeric seal portions 122 of the present embodiment are deformable body, and in the case where being acted on by predetermined external force, elasticity can occurs in itself
Deformation.The elastomeric seal portions 122 and body part 11 of the present embodiment are in sealing contact, and apply predetermined opening pressure to body part 11.
Pressure increase inside gas vent 111 to check valve 12 predetermined opening pressure when, at least part of elastomeric seal portions 122
It can be moved under the influence of gas towards the direction far from body part 11, to be detached from sealing state, at this time valve group with body part 11
Part 1 is in the open state.When pressure in gas vent 111 is less than predetermined opening pressure, bullet of the meeting of elastomeric seal portions 122 at itself
Property restoring force under the action of restore again, with body part 11 restore sealing state, at this time valve module 1 be in close shape
State.
The valve module 1 of the present embodiment can be connected and fixed by body part 11 with outer structural parts, in order to by valve module 1
It is mounted on the predetermined position of outer structural parts, the fixed convenience of the installation of poppet valve assembly 1.In one example, ontology
Portion 11 is plate structure, to reduce the whole height and processing and manufacturing difficulty of valve module 1.Body part 11 can be polygon or circle
Shape.When body part 11 is polygon or round structure, body part 11 can seal by welding with outer structural parts
Connection.When body part 11 is circular configuration, the mode that body part 11 can also be threadedly coupled with outer structural parts is tightly connected.
The valve module 1 of the utility model is reached by the way that gas vent 111 and check valve 12 is arranged simultaneously on body part 11
The effect being vented to one-way conduction.Gas vent 111 and check valve 12, while gas vent are separately provided on body part 11
111 are spaced with the interconnecting piece 121 of check valve 12 and are arranged, so that the pore size of gas vent 111 not will receive the shadow of interconnecting piece 121
It rings, is conducive to the cross-sectional area size by being precisely controlled gas vent 111 to control the deflation rate of gas vent 111, is promoted
The deflation rate of valve module 1 controls precision.11 rigidity of body part of the present embodiment is big, itself being not easy stress, deformation occurs, thus
A possibility that reduction body part 11 deforms and the aperture of gas vent 111 is caused to reduce, and then guarantee 1 use process of valve module
Middle 12 switching performance of check valve is stablized.In addition, the position of gas vent 111 will not be interfered with the position of check valve 12, thus
No matter the interconnecting piece 121 of check valve 12 is rigidity or flexibility, and the aperture of gas vent 111 not will receive the connection of check valve 12
The influence in portion 121 and change, it is ensured that the deflation rate of gas vent 111 is stablized, to guarantee 1 use process of valve module
Middle 12 switching performance of check valve is stablized.The aperture of the gas vent 111 of the present embodiment can add according to actual exhaust air rate requirement
Work manufacture.Optionally, gas vent 111 is circular hole, and diameter is 1 micron to 1 millimeter.
Interconnecting piece 121 included by the check valve 12 of the present embodiment is set on elastomeric seal portions 122 towards body part 11
Side.When interconnecting piece 121 is connected and fixed on body part 11, interconnecting piece 121 directly acts on 122 application of elastomeric seal portions
Power, so that elastomeric seal portions 122 are pressed in body part 11 and apply predetermined opening pressure to body part 11.
It is equipped with recess portion 123 towards the surface of body part 11 on the elastomeric seal portions 122 of the present embodiment, thus elastomeric seal portions
Chamber is formed between 122 and body part 11, and forms annular sealing surface between elastomeric seal portions 122 and body part 11, and should
Annular sealing surface is arranged around gas vent 111.Gas vent 111 on body part 11 is connected with the chamber, from 111 row of gas vent
Gas out gathers in the chamber in advance.122 one side of elastomeric seal portions with recess portion 123 is reduced to be connect with body part 11
On the other hand contacting surface product increases the contact area with the gas being discharged from gas vent 111, to reduce elastomeric seal portions 122
Predetermined opening pressure.
The elastomeric seal portions 122 of the present embodiment extend towards the direction close to body part 11 and are formed between body part 11
Angle α.Optionally, which is acute angle.In this way, the whole outer surface of elastomeric seal portions 122 can be tapered, elastic packing
Portion 122 is easy to move upwards generation flexible deformation, to advantageously reduce the predetermined opening pressure of elastomeric seal portions 122.
The body part 11 of the present embodiment is equipped with and the spaced installation through-hole 112 of gas vent 111.Interconnecting piece 121 is separate
A part and body part 11 of elastomeric seal portions 122 are tightly connected, to seal the installation through-hole 112.The interconnecting piece of the present embodiment
It is connected and fixed by way of being bonded or welded between 121 and the surface of the formation installation through-hole 112 of body part 11, alternatively, connection
Portion 121 and installation through-hole 112 are connected with interference fit fixation.Optionally, elastomeric seal portions 122 and interconnecting piece 121 can
To be an integral structure, and all have elastic deformability.The material of elastomeric seal portions 122 and interconnecting piece 121 can be rubber
Or silica gel.Optionally, elastomeric seal portions 122 and interconnecting piece 121 can be split type structure.Elastomeric seal portions 122 and interconnecting piece
121 form an entirety by way of assembling.The material of elastomeric seal portions 122 can be rubber or silica gel, and interconnecting piece 121
Material can be rubber or silica gel, be also possible to plastics or metal.
The interconnecting piece 121 of the present embodiment includes the connecting column 121a being connected with elastomeric seal portions 122 and the company of being set to
Meet the flange 121b of column 121a outer peripheral surface.In one example, peace is formed on the connecting column 121a of interconnecting piece 121 and body part 11
It fills and is tightly connected between the surface of through-hole 112 to seal installation through-hole 112.The connecting column 121a of interconnecting piece 121 is plugged in installation
Through-hole 112 and flange 121b are contacted with the surface on body part 11 backwards to elastomeric seal portions 122, so that interconnecting piece 121 passes through company
It meets column 121a and flange 121b and is connected to body part 11, promote the connective stability of interconnecting piece 121 and body part 11, reduce single
A possibility that being fallen off from body part 11 to valve 12.In one example, flange 121b is ring structure, thus flange
On 121b and body part 11 interconnecting piece 121 can be further increased to be tightly connected between the surface of elastomeric seal portions 122
Sealing reliability between body part 11.At this point, connecting column 121a can be with the table of formation installation through-hole 112 on body part 11
It is tightly connected between face, alternatively, connecting column 121a can be with 112 clearance fit of installation through-hole.
In one example, elastomeric seal portions 122 and interconnecting piece 121 are an integral structure and are elastic structure.It is logical
It crosses and is applied by pressure and interconnecting piece 121 is inserted into installation through-hole 112 for interconnecting piece 121, flange 121b is shunk at this time.In flange
When 121b passes through installation through-hole 112, flange 121b is restored and is connected in body part 11.In this way, interconnecting piece 121 and body part
11 connection type rapid and convenient is easy to operate.
The installation through-hole 112 of the present embodiment can be stepped hole.Installation through-hole 112 includes the first hole section and the second hole section.
Diameter of the diameter of first hole section less than the second hole section.Most of structure of connecting column 121a is in the first hole section.Flange 121b
At least part can reduce the whole height of valve module 1 with this in the second hole section, poppet valve assembly 1 it is compact-sized
Property.Flange 121b is contacted with the sealing bottom surface of the second hole section.
Further, Fig. 2 schematically shows the sectional structure of the valve module 1 of another embodiment of the utility model.Such as
Shown in Fig. 2, the interconnecting piece 121 of the present embodiment further includes the guiding stern post 121c being connected with connecting column 121a.Flange 121b is set
It is placed in connecting column 121a and is oriented in the transitional region of stern post 121c.In interconnecting piece 121 and 11 connection procedure of body part, connection
Portion 121 is easier to insertion installation through-hole 112 under the guiding role of guiding stern post 121c, promotes interconnecting piece 121 and body part 11
The convenience and accuracy of installation process improve connection working efficiency.
The utility model embodiment also provides a kind of cap assemblies 2 for energy storage device.The cap assemblies 2 of the present embodiment can
For energy storage devices such as secondary cell or battery modules.The utility model embodiment below is only to use the secondary of cap assemblies 2
It is illustrated for battery or battery modules, but the cap assemblies 2 of the utility model embodiment is below using being not limited to
Embodiment also can be applied in other field, and protect to it.
Valve module 1 of the cap assemblies 2 of the present embodiment including cover board 21 and the above-described embodiment for being set to cover board 21.This reality
When being applied to secondary cell with the cap assemblies 2 of new embodiment, the secondary cell of the utility model embodiment includes shell, setting
In the intracorporal electrode assembly of shell and the cap assemblies 2 of closing shell.Air pressure increases and is more than pre- level pressure in the shell of secondary cell
When power, valve module 1 is turned on exhaust pressure relief, so that the air pressure of enclosure interior be made to decline.The lid group of the utility model embodiment
When part 2 is applied to battery modules, the battery modules of the utility model embodiment include with the cabinet being open, are set in cabinet
Secondary cell and closing be open and in the cabinet of 2 battery modules of cap assemblies that is connect with box sealing pressure increase above it is pre-
When constant-pressure, valve module 1 is opened so that box house pressure release.
The utility model in order to better understand, below with reference to Fig. 3 and Fig. 4 to the cap assemblies 2 of the utility model embodiment
It is described in detail, but following embodiment does not limit the protection scope of the utility model claims.
Fig. 3 schematically shows the sectional structure of the cap assemblies 2 of an embodiment of the present invention.Such as Fig. 3 and Fig. 4 institute
Show, the cover board 21 and valve module 1 of the present embodiment are separate structure, and the two can be fabricated respectively and assemble to form cap assemblies 2 again.
Valve module 1 is connected to a fixed by included body part 11 with cover board 21.In one example, it is logical to be equipped with connection for cover board 21
Hole, the body part 11 of valve module 1, which is plugged in connection through-hole and is tightly connected with cover board 21, connect through-hole with sealing cover, avoids gas
Pass through out of connection through-hole.The body part 11 of valve module 1 connects the Nian Jie surface of through-hole, welding or screw thread with formation on cover board 21
Connection.
It is readily appreciated that ground, body part 11 included by the cover board 21 and valve module 1 of the present embodiment can be integral structure,
Namely the processing and manufacturing of cover board 21 and body part 11 is disposably completed by processing methods such as casting or punching presses.In this way, cover board 21
High with 11 bonding strength of body part, shock resistance is good.
The cap assemblies 2 of the present embodiment further include the explosion-proof valve 22 being set on cover board 21.The burst pressure of explosion-proof valve 22 is big
In the predetermined opening pressure of check valve 12.The burst pressure of explosion-proof valve 22 refers to atmospheric pressure value when explosion-proof valve 22 ruptures.It is secondary
Battery or battery modules can generate gas and internal pressure caused to increase when working normally, and it is pre- to reach check valve 12 in pressure rise
When opening pressure surely, check valve 12 is opened, and secondary cell or battery modules internal gas are discharged, so that internal pressure declines,
Secondary cell or battery modules internal pressure is avoided constantly to rise and secondary cell or battery modules is caused to expand deformation.Two
Rapid gas generating is understood when primary cell or battery modules non-normal working and internal pressure is caused sharply to increase.It is reached in pressure rise
When opening pressure to check valve 12 is predetermined, check valve 12 is opened, and secondary cell or battery modules internal gas are discharged, thus from
The decline of body internal pressure.But since internal pressure is sharply to increase, the deflation rate of check valve 12 is lower than secondary cell or electricity
The gas production rate of Chi Mo group, secondary cell or battery modules internal pressure still will continue to rise, until reaching explosion-proof valve 22
Burst pressure and cause explosion-proof valve 22 occur explosion.After explosion occurs for explosion-proof valve 22, secondary cell or battery modules internal pressure
It can instantaneously reduce, to reduce secondary cell or a possibility that battery modules are exploded.
The cap assemblies 2 of the present embodiment further include first electrode terminal 23, second electrode terminal 24 and rotating sheet 25.First
Electrode terminal 23 and second electrode terminal 24 are electrically connected with electrode assembly 4, wherein first electrode terminal 23 is electrically connected with cover board 21
It connects, second electrode terminal 24 and cover board 21 insulate.Rotating sheet 25 attaches to cover board 21 and is electrically connected with cover board 21.Check valve 12 with
Rotating sheet 25 interval setting, namely between check valve 12 on cover board 21 is with rotating sheet 25 it is spaced a predetermined distance from.When secondary
When battery or battery modules air pressure inside increase to the predetermined eversion pressure of rotating sheet 25, rotating sheet 25 is overturn, so that the first electricity
Extreme son 23 and second electrode terminal 24 are electrically connected.The predetermined eversion pressure of rotating sheet 25 is greater than the predetermined opening pressure of check valve 12
Power and the burst pressure for being less than explosion-proof valve 42.In this way, secondary cell or battery modules can generate gas when overcharge situation occurs
Body and cause internal pressure to increase.When pressure rise reaches the predetermined eversion pressure of rotating sheet 25, rotating sheet 25 is flipped
So that first electrode terminal 23 and second electrode terminal 24 are connected, thus make secondary cell or battery modules that short circuit occur, thus
Slow down 4 further occurrence overcharge of electrode assembly.
Fig. 5 schematically shows the sectional structure of the secondary cell of an embodiment of the present invention.As shown in figure 5, this
Utility model embodiment also provides a kind of secondary cell.The secondary cell of the present embodiment includes with the shell 3 being open, is set to
The cap assemblies 2 of electrode assembly 4 and above-described embodiment in shell 3.Cap assemblies 2 can cover close state opening and it is included
Cover board 21 and shell 3 are tightly connected.Since the secondary cell of the present embodiment includes the valve module 1 of above-described embodiment, at this
When rising situation and reaching the predetermined opening pressure of check valve 12 occur in the secondary cell internal pressure of embodiment, the valve can be passed through
Component 1 realizes pressure release, to guarantee the safety of itself use process.
Fig. 6 schematically shows the sectional structure of the battery modules of an embodiment of the present invention.Such as Fig. 6 and Fig. 7 institute
Show, the utility model embodiment also provides a kind of battery modules.The battery modules of the present embodiment include with opening cabinet 5,
It is set to the cap assemblies 2 of the secondary cell 6 and above-described embodiment in cabinet 5.Cap assemblies 2, which can cover to close, states opening, and institute
Including cover board 21 and cabinet 5 be tightly connected.Since the battery modules of the present embodiment include the valve module 1 of above-described embodiment, because
This can lead to when rising situation and reaching the predetermined opening pressure of check valve 12 occur in the battery modules internal pressure of the present embodiment
It crosses the valve module 1 and realizes pressure release, to guarantee the safety of itself use process.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case where enclosing, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but is included all technical solutions falling within the scope of the claims.
Claims (13)
1. a kind of valve module (1) for energy storage device characterized by comprising
Body part (11), the body part (11) are equipped with gas vent (111)；And
Check valve (12), the check valve (12) include the interconnecting piece (121) being connected with the body part (11) and with institute
State the elastomeric seal portions (122) that interconnecting piece (121) is connected；
Wherein, the interconnecting piece (121) and the gas vent (111) interval are arranged, and the elastomeric seal portions (122) are set to institute
The side of body part (11) and the covering gas vent (111) are stated, to seal the gas vent (111), the elastomeric seal portions
(122) it is configured to respond to the internal pressure increase of the gas vent (111) and deforms, so that the elastomeric seal portions (122)
Sealing state is detached from the body part (11).
2. valve module (1) according to claim 1, which is characterized in that it is close that the interconnecting piece (121) is set to the elasticity
Towards the side of the body part (11) in envelope portion (122)；Towards the body part (11) on the elastomeric seal portions (122)
Surface is equipped with recess portion (123), to form chamber, the chamber between the elastomeric seal portions (122) and the body part (11)
Room is connected with the gas vent (111).
3. valve module (1) according to claim 1 or 2, which is characterized in that the elastomeric seal portions (122) are towards close to institute
The direction for stating body part (11) extends and the angle (α) between the body part (11) is acute angle.
4. valve module (1) according to claim 2, which is characterized in that the body part (11) is equipped with and the gas vent
(111) spaced installation through-hole (112), the interconnecting piece (121) and the body part (11) are tightly connected to seal
State installation through-hole (112).
5. valve module (1) according to claim 4, which is characterized in that the interconnecting piece (121) includes close with the elasticity
Connecting column (121a) that envelope portion (122) is connected and the flange (121b) for being set to the connecting column (121a) outer peripheral surface, institute
State that connecting column (121a) is plugged in the installation through-hole (112) and the flange (121b) is contacted with the body part (11).
6. valve module (1) according to claim 5, which is characterized in that the installation through-hole (112) include the first hole section and
Second hole section, the diameter of first hole section are less than the diameter of second hole section, the flange (121b) and second hole
The sealing bottom surface contact of section.
7. valve module (1) according to claim 1, which is characterized in that the diameter of the gas vent (111) is 1 micron~1
Millimeter.
8. a kind of cap assemblies (2) for energy storage device, which is characterized in that including cover board (21) and such as claim 1 to 7 times
Valve module (1) described in one, the valve module (1) are set to the cover board (21).
9. cap assemblies (2) according to claim 8, which is characterized in that the cover board (21) and the body part (11) are
Integral structure.
10. cap assemblies (2) according to claim 8, which is characterized in that the cap assemblies (2) further include be set to it is described
Explosion-proof valve (22) on cover board (21), the burst pressure of the explosion-proof valve (22) are greater than the predetermined opening pressure of the check valve (12)
Power.
11. cap assemblies (2) according to claim 10, which is characterized in that the cap assemblies (2) further include first electrode end
Sub (23), second electrode terminal (24) and rotating sheet (25), the first electrode terminal (23) are electrically connected with the cover board (21)
It connects, the second electrode terminal (24) and the cover board (21) are insulated, and the rotating sheet (25) attaches to the cover board (21), institute
It states check valve (12) and the rotating sheet (25) interval to be arranged, the predetermined eversion pressure of the rotating sheet (25) is greater than described unidirectional
The predetermined burst pressure opened pressure and be less than the explosion-proof valve (22) of valve (12).
12. a kind of secondary cell, which is characterized in that including the described in any item cap assemblies of such as claim 8 to 11 (2).
13. a kind of battery modules, which is characterized in that including the described in any item cap assemblies of such as claim 8 to 11 (2).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109566A (en) * | 2020-09-29 | 2020-12-22 | 欣旺达电动汽车电池有限公司 | Exhaust passage structure, battery package module and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112109566A (en) * | 2020-09-29 | 2020-12-22 | 欣旺达电动汽车电池有限公司 | Exhaust passage structure, battery package module and vehicle |
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