CN206610838U - Secondary cell cap assembly and secondary cell - Google Patents
Secondary cell cap assembly and secondary cell Download PDFInfo
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- CN206610838U CN206610838U CN201720390135.2U CN201720390135U CN206610838U CN 206610838 U CN206610838 U CN 206610838U CN 201720390135 U CN201720390135 U CN 201720390135U CN 206610838 U CN206610838 U CN 206610838U
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- secondary cell
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- protrusion
- contact chip
- cap assembly
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application is related to secondary cell cap assembly and secondary cell.The cap assembly includes：The first terminal, Second terminal and coping plate, the coping plate and the first terminal insulation set, the coping plate are electrically connected with the Second terminal；The coping plate includes body and is connected to the body and outstanding protrusion, by forming the protrusion in the inwall formation depressed part of the protrusion, the secondary cell cap assembly also includes contact chip, the contact chip is attached to the protrusion and is contained in the depressed part, when the internal pressure of secondary cell exceedes reference pressure, the contact chip acts to electrically connect the first terminal and the Second terminal in the presence of the internal pressure.The program can either lift the energy density of secondary cell, sensitivity during contact chip action be ensure that again, and can improve the reliability that contact chip is connected with coping plate.
Description
Technical field
The application is related to energy storage device technical field, more particularly to a kind of secondary cell cap assembly and secondary cell.
Background technology
Secondary cell can be by recharge and electric discharge, therefore is widely used in the small portables such as mobile phone, notebook
In electronic equipment and in the vehicles such as hybrid-power electric vehicle, pure electric automobile.Secondary cell is in quick charge or big work(
In rate discharge process, excessive heat production is understood in inside, and electrolyte may be decomposed, and this hot generation and the decomposition of electrolyte make
The pressure increase inside secondary cell is obtained, it is thereby possible to cause secondary cell to catch fire and explode, the safety of secondary cell is reduced
Property.
In correlation technique, secondary cell generally includes shorting members, and the pressure inside secondary cell exceedes reference pressure
When, shorting members are acted under gas pressure so that the positive terminal and negative terminal short circuit of secondary cell, are thus improved secondary
The security of battery.
However, in above-mentioned structure, because shorting members are close to battery core, in order to avoid the pole piece in shorting members and battery core
Generation is made electrical contact with, it is necessary to spaced between shorting members and battery core, and which results in the decline of the energy density of secondary cell.
Utility model content
The embodiment of the present application provides a kind of secondary cell cap assembly and secondary cell, is improving safety of secondary battery
While, additionally it is possible to lift the energy density of secondary cell.
The first aspect of the application provides a kind of secondary cell cap assembly, including：The first terminal, Second terminal and
Coping plate,
The coping plate and the first terminal insulation set, the coping plate are electrically connected with the Second terminal；
The coping plate includes body and is connected to the body and outstanding protrusion, by forming the protuberance
Portion and the protrusion inwall side formed depressed part,
The secondary cell cap assembly also includes contact chip, and the contact chip is attached to the protrusion and is contained in institute
State in depressed part,
When the internal pressure of secondary cell exceedes reference pressure, the contact chip is moved in the presence of the internal pressure
Make to electrically connect the first terminal and the Second terminal.
It is preferred that, the contact chip includes marginal portion, crushed element and middle body, and the marginal portion attaches to institute
Protrusion is stated, the crushed element connects the marginal portion and the middle body, and the crushed element is bent into towards remote
Direction from the protrusion is protruded.
It is preferred that, the direction that the inwall of the protrusion is pointed to the outer wall of the protrusion is defined as thickness positive direction；
Along thickness positive direction, inwall of the bottom surface without departing from the body of the contact chip.
It is preferred that, the protrusion is provided with first through hole, and the first terminal includes the epimere and hypomere being connected, described
Epimere passes the first through hole, and the hypomere is contained in the depressed part.
It is preferred that, in addition to the electric-conductor electrically connected with the first terminal,
The second through hole is further opened with the protrusion, the contact chip seals second through hole, when the secondary electricity
The internal pressure in pond exceed reference pressure when, the contact chip towards close to the electric-conductor direction motion and with the electric-conductor
Electrical contact.
It is preferred that, the inwall of the protrusion opens up fluted, and the groove extends around the edge of second through hole,
And the marginal portion is fixed in the groove.
It is preferred that, in addition to insulating component, the insulating component is arranged between the electric-conductor and the coping plate,
The position of the insulating component correspondence contact chip sets third through-hole, when the internal pressure of the secondary cell
During more than reference pressure, the contact chip makes electrical contact with through the third through-hole with the electric-conductor.
It is preferred that, in addition to resistive elements, the resistive elements are series between the Second terminal and the coping plate.
It is preferred that, in addition to the first terminal side insulating part, the first terminal side insulating part is arranged at the coping plate
The position of the correspondence contact chip offers gas and passes through hole on lower section, the first terminal side insulating part.
The second aspect of the application provides a kind of secondary cell, including secondary cell cap assembly, housing and electrode
Component, the secondary cell cap assembly with being connected to form encapsulated space at the opening of the housing,
The electrode assemblie includes the first pole piece, the second pole piece and is arranged on first pole piece and second pole piece
Between dividing plate, the first terminal electrically connected with first pole piece, and the Second terminal is electrically connected with second pole piece；
The electrode assemblie is encapsulated in the encapsulated space, and the secondary cell cap assembly is described in any of the above-described
Secondary cell cap assembly.
The technical scheme that the application is provided can reach following beneficial effect：
This application provides a kind of secondary cell cap assembly, wherein, the cap assembly includes contact chip and coping plate, top
Cover plate includes protrusion, and depressed part is formed in the inwall of protrusion by forming the protrusion, and contact chip attaches to protrusion
And be contained in depressed part.It follows that in a first aspect, by setting protrusion on coping plate, being originally used for outside coping plate
Space be switched to the inside of coping plate, the segment space is the space in depressed part, by the way that contact chip is contained in
In depressed part, it first ensure that and appropriate interval left between contact chip and electrode assemblie, it is to avoid electricity occurs between the two and connects
Touch, second reduce the space of the electrode assemblie shared by contact chip, the space for therefore saving on out can be bigger for accommodating
The electrode assemblie of capacity, the energy density of secondary cell is improved with this；Second aspect, the gas expansion inside secondary cell
When power acts on housing and coping plate, coping plate and housing can deform in the presence of the expansive force, and the deformation meeting
The contact chip being connected with coping plate is caused to deform, after contact chip is deformed, gas pressure value when contact chip is acted can deviate from
Default base pressure force value, cause contact chip can not reliably working, and the application propose, protrusion is set on coping plate, it is grand
The portion of rising is prominent to outside body, and this scheme is compared for flat coping plate, and the intensity of coping plate can significantly be strengthened, accordingly
Ground, deformation of the protrusion under gas tension effect reduces, and now, contact chip is attached into protrusion, it is possible to correspondingly
Reduce deformation of the contact chip under expansive force effect, thus improve sensitivity during contact chip action, improve contact chip action not
Reliable phenomenon；The third aspect, because contact chip is contained in depressed part, when secondary cell internal pressure exceedes reference pressure
When, because the active force of gas need to promote contact chip to act, the direction where protrusion is pointed in the direction of the active force of gas, this
When, the active force of gas can cause the even closer of contact chip and top cover chip bonding, and therefore, what contact chip was connected with coping plate can
It is higher by property.In terms of above three, first aspect improves the energy density of secondary cell, and second aspect and the third aspect are carried
The high reliability of contact chip action, improves the security of secondary cell.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary, this can not be limited
Application.
Brief description of the drawings
The decomposition view for the secondary cell cap assembly that Fig. 1 provides for the embodiment of the present application；
The profile for the cap assembly that Fig. 2 provides for the embodiment of the present application；
The partial enlarged view I of the profile for the cap assembly that Fig. 3 provides for the embodiment of the present application；
The partial enlarged view II of the profile for the cap assembly that Fig. 4 provides for the embodiment of the present application；
The top view for the secondary cell that Fig. 5 provides for the embodiment of the present application；
Fig. 6 is the A-A views in Fig. 5.
Reference：
1- the first terminals；
11- epimeres；
12- hypomeres；
2- Second terminals；
3- coping plates；
31- bodies；
32- protrusions；
321- first through hole；
The through holes of 322- second；
323- grooves；
33- depressed parts；
41- the first terminals side insulating part；
411- gases pass through hole；
42- Second terminals side insulating part；
51- the first terminal side seal circles；
52- Second terminal side seal circles；
6- contact chips；
61- crushed elements；
62- marginal portions；
63- middle bodies；
7- electric-conductors；
71- exposed parts；
8- insulating components；
The insulating barriers of 81- first；
The insulating barriers of 82- second；
821- third through-holes；
9- resistive elements；
10- conducting blocks；
100- cap assemblies；
301- the first terminals side collector plate；
302- Second terminals side collector plate；
400- housings；
500- electrode assemblies.
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the application
Example, and be used to together with specification to explain the principle of the application.
Embodiment
The application is described in further detail below by specific embodiment and with reference to accompanying drawing.
Secondary cell is generally included：Include the electrode assemblie of anode pole piece, cathode pole piece and dividing plate；Accommodate the electrode assemblie
Housing；The cap assembly being connected with the opening of housing；And it is provided at the shorting members in cap assembly, the shorting members
Acted in the internal pressure rise of housing so that the anode pole piece of secondary cell and cathode pole piece is short-circuit.
As Figure 1-5, the first aspect of the application provides a kind of secondary cell cap assembly 100, the cap assembly
100 include：The first terminal 1, Second terminal 2 and coping plate 3.Wherein, the first terminal 1 and the opposite polarity of Second terminal 2, example
Such as, the first terminal 1 is positive terminal, and Second terminal 2 is then negative terminal, conversely, the first terminal 1 is negative terminal, the second end
Son 2 is then positive terminal.Here, the polarity not to the first terminal 1 and Second terminal 2 is specifically limited, that is to say, that no matter the
How is the polarity of one terminal 1 and Second terminal 2, the scheme that can be proposed using the application.
The first terminal 1 and Second terminal 2 may be contained within coping plate 3, wherein, the first terminal 1 and the insulation set of coping plate 3,
Second terminal 2 is electrically connected with coping plate 3.In the embodiment shown in Fig. 1-2, secondary cell cap assembly 100 also includes first
Terminals side insulating part 41 and the first terminal side seal circle 51, pass through the first terminal side insulating part between the first terminal 1 and coping plate 3
41 and the first terminal side seal circle 51 realize insulation, specifically, the first terminal side insulating part 41 is arranged on the lower section of coping plate 3,
The first terminal 1 sequentially passes through the first terminal side insulating part 41 and coping plate 3 and stretched out outside coping plate 3, the first terminal side seal circle
51 are set between the first terminal 1 and coping plate 3.
The position of correspondence contact chip 6 offers gas by hole 411 on the first terminal side insulating part 41, secondary cell it is interior
Portion's gas acts on contact chip 6 by gas by hole 411.The first terminal side insulating part 41 can reliably ensure contact chip 6
Insulation between electrode assemblie, it is to avoid both make electrical contact with, meanwhile, gas can also ensure that electrode assemblie by hole 411
The gas of generation effectively acts on contact chip 6.
Coping plate 3 includes body 31 and is connected to the protrusion 32 of body 31, and protrusion 32 is outstanding from body 31, leads to
Cross to form the protrusion 32, be originally used for the inside that the space outside coping plate 3 has been switched to coping plate 3, thus increased sky
Between for the space in depressed part 33.On the other hand, by setting protrusion 32 on coping plate 3, compared to flat coping plate
For, the intensity of coping plate 3 is significantly strengthened, especially at protrusion 32, aobvious due to being deformed caused by the effect of gas tension
Write and reduce.
In order to avoid secondary cell has an accident when overcharging, essentially, secondary cell cap assembly is also wrapped
Contact chip 6 is included, contact chip 6 is attached to protrusion 32 and is contained in depressed part 33, when the internal pressure of secondary cell exceedes
During reference pressure, contact chip 6 internally acts to realize the electrical connection of the first terminal 1 and Second terminal 2 in the presence of pressure.Need
It is noted that contact chip 6 is contained in depressed part 33, it can be that a part for contact chip 6 is contained in depressed part 33, also may be used
To be that whole contact chip 6 is contained in depressed part 33.
It can be seen from description more than, by setting protrusion 32 on coping plate 3, the sky outside coping plate 3 is originally used for
Between be switched to the inside of coping plate 3, the segment space is the space in depressed part 33, by the way that contact chip 6 is contained in
In depressed part 33, it first ensure that and appropriate interval left between contact chip 6 and electrode assemblie, it is to avoid electricity occurs between the two
Contact, second reduces the space of the electrode assemblie shared by contact chip 6, and the space for therefore saving on out can be for receiving more
The electrode assemblie of Large Copacity, the energy density of secondary cell is improved with this；Second aspect, the gas inside secondary cell is swollen
When expansive force acts on housing and coping plate 3, coping plate 3 and housing can deform in the presence of the expansive force, and the deformation
The contact chip 6 being connected with coping plate 3 can be caused to deform again, after contact chip 6 is deformed, gas pressure value when contact chip 6 is acted
Can deviate from default base pressure force value, cause contact chip 6 can not reliably working, and the application propose, on coping plate 3 set
Protrusion 32, protrusion 32 is prominent to outside body 32, and this scheme is compared for flat coping plate, the intensity of coping plate 3
Can significantly it strengthen, correspondingly, deformation of the protrusion 33 under gas tension effect reduces, and now, contact chip 6 is attached to grand
Play portion 32, it is possible to correspondingly reduce deformation of the contact chip 6 under expansive force effect, thus improve spirit when contact chip 6 is acted
Sensitivity, insecure phenomenon is acted to improve contact chip 6；The third aspect, because contact chip 6 is contained in depressed part 33, when two
When primary cell internal pressure exceedes reference pressure, because the active force of gas need to promote contact chip 6 to act, the active force of gas
The direction where protrusion 32 is pointed in direction, and now, the active force of gas can cause contact chip 6 to be engaged more with coping plate 3
Closely, therefore, the reliability that contact chip 6 is connected with coping plate 3 is higher.In terms of above three, first aspect improves secondary electricity
The energy density in pond, second aspect and the third aspect improve the reliability of the action of contact chip 6, improve the peace of secondary cell
Quan Xing.
Contact chip 6 is attached on protrusion 32, a kind of embodiment, as shown in figure 3, contact chip 6 includes：Film-form
Crushed element 61, the crushed element 61 is formed as towards the arc away from the projection of coping plate 3；The marginal portion 62 of circumference, it is formed
In the outside of crushed element 61, to be attached to protrusion 32；And prominent middle body 63, the connection edge part of crushed element 61
Divide 62 and middle body 63, middle body 63 is prominent to the side away from protrusion 32 from the center of crushed element 61.Work as deformation
When part 61 is formed with 0.4mm thickness, middle body 63 can be formed 0.5mm~0.6mm thickness, and connect
Contact 6 is configured to when the internal pressure rise of secondary cell, and the concave part of crushed element 61 can be overturn.
It is known that contact chip 6 is contained in depressed part 33, in one embodiment, at least a portion of contact chip 6 is accommodated
In in depressed part 33, in this embodiment, even if the only a fraction of contact chip 6 is contained in depressed part 33, contact can also be reduced
The space of electrode assemblie shared by piece 6, the segment space may also used to increase the size of electrode assemblie, secondary to increase
The energy density of battery.
Certainly, in other embodiment, contact chip 6 can also be set to be fully accommodated in depressed part 33.Specifically,
In the embodiment shown in fig. 3, marginal portion 62 attaches to protrusion 32, and its middle body 63 is directed away from the side of protrusion 32
To prominent, and do not protrude the inwall of body 31.Specifically, the direction that can point to inwall with the outer wall of protrusion 32 is defined as
The thickness positive direction of protrusion 32, along thickness positive direction, inwall of the bottom surface without departing from body 31 of contact chip 6.
On above-mentioned thickness direction, the height difference H of the inwall of body 31 and the inwall of protrusion 32 could be arranged to 0.1
~50mm, referring to Fig. 3.Difference in height in the range of this has following progressive：1st, formed after protrusion 32 swells in inwall side
Depressed part 33 ensure that contact chip 6 has enough upset spaces, to enable contact chip 6 to have foot under gas pressure
Enough kinetic energy；2nd, enough insulation gaps can be left between the bottom surface of contact chip 6 and electrode assemblie, the insulation gap can be protected
Electrode assemblie after card increase capacity will not make electrical contact with contact chip 6；3rd, secondary cell exterior space allows, will not be with other portions
Part produces interference.
Contact chip 6 can have different thickness, and the part of different-thickness can be the protuberance of centrally located part 63
Point, or, the part of different-thickness can be the part gradually changed from marginal portion 62 to the thickness of middle body 6, and cause
Middle body 63 is most thick, to be made electrical contact with when contact chip 6 is acted via middle body 63.When contact chip 6 is all contained
When in depressed part 33, it no longer takes the space where electrode assemblie, so that can between contact chip 6 and electrode assemblie
Reliable insulation, meanwhile, provide condition for the energy density of secondary cell.
Referring to Fig. 1 and Fig. 3, the insulation set of the first terminal 1 is in protrusion 32, and specifically, protrusion 32 leads to provided with first
Hole 321, the first terminal 1 stretches out via first through hole 321.The first terminal 1 includes the epimere 11 and hypomere 12 being connected, epimere 11
First through hole 321 is passed, hypomere 12 is contained in depressed part 33.That is, in this embodiment, shorting members are more nearly
In the first terminal 1, rather than Second terminal 2, still, the application not limited to this.
Such scheme forms first through hole 321 by way of removing material on protrusion 32 so that protrusion 32
Solid material is reduced, inside secondary cell during aerogenesis, under thermal stress and the double action of gas tension, less material
The stress that protrusion 32 is produced is relatively small, then correspondingly, and the deformation that thus stress is produced is also relatively small, and attaches to protuberance
The working environment of contact chip 6 in portion 32 can be substantially improved, and the sensitivity that contact chip 6 is acted can be obviously improved.
Further, secondary cell cap assembly 100 also includes the electric-conductor 7 electrically connected with the first terminal 1, now, conductive
Part 7 makes electrical contact with the contact chip 6 after action.Electric-conductor 7 is electrically connected with the epimere 11 of the first terminal 1, and is dashed forward positioned at protrusion 32
The side gone out, length direction extension of the electric-conductor 7 along coping plate 3.The second through hole 322 is offered on protrusion 32, contact chip 6 is close
Be encapsulated in the second through hole 322, when secondary cell internal pressure exceed reference pressure when, contact chip 6 towards close to electric-conductor 7 direction
Move and made electrical contact with electric-conductor 7, now, contact chip 6 is turned on electric-conductor 7, to realize the first terminal 1 and the electricity of Second terminal 2
Connection.Setting for electric-conductor 7 can be electrically connected easily with the realization of contact chip 6 after action, so as to ensure that secondary cell is overcharged
When safety, meanwhile, electric-conductor 7 can also ensure that contact chip 6 has enough motion spaces, to cause contact chip 6 to obtain enough
Kinetic energy and electric-conductor 7 it is in electrical contact.
Explanation, electric-conductor 7 and the insulation set of coping plate 3 are needed exist for, to avoid above-mentioned electrical contact between the two,
Specifically, secondary cell cap assembly also include insulating component 8, insulating component 8 be arranged between electric-conductor 7 and coping plate 3 and
Fitted with protrusion 32, electric-conductor 7 is kept apart with coping plate 3.However, in order to ensure electric-conductor 7 and connecing after action
Contact 6 can be electrically connected reliably, and electric-conductor 7 includes the exposed part 71 being exposed to outside insulating component 8, and the exposed part is just right
Second through hole 322, when the internal pressure of secondary cell exceedes reference pressure, contact chip 6 act and via the second through hole 322 with
Exposed part 71 makes electrical contact with.
Referring to Fig. 1, insulating component 8 is double-decker, and it includes the first insulating barrier 81 and the second insulating barrier 82, wherein, the
Two insulating barriers 82 are fixed between electric-conductor 7 and coping plate 3 and fitted with protrusion 32, and the first insulating barrier 81 is covered in
The top of second insulating barrier 82, and only cover a part for the second insulating barrier 82, the first insulating barrier 81 and the second insulating barrier 82 it
Between it is spaced.One end of electric-conductor 7 is plugged in the interval between the first insulating barrier 81 and the second insulating barrier 82, and the other end is naked
Reveal and be locked on the first terminal 1, and electrically connected with external circuit.Second insulating barrier 82 is provided with third through-hole 821, electric-conductor
7 pairs should third through-hole 821 part be exposed part 71, when secondary cell internal pressure exceed reference pressure when, contact
Piece 6 makes electrical contact with through third through-hole 821 with exposed part 71.
In the application, in order to further reduce the space of the occupancy of contact chip 6, it is preferred that opened on the inwall of protrusion 32
Provided with groove 323, groove 323 extends around the edge of the second through hole 322, and marginal portion 62 is fixed in groove 323.In protuberance
Groove 323 is opened up on the inwall in portion 32, can make protrusion 32 local thickness be thinned, this scheme do not influence protrusion 32 with
, can be with further such that the contact chip 6 being connected with protrusion 32 be arranged on farther away from electricity on the basis of the bonding strength of contact chip 6
The side of pole component, so as to save more spaces.
When keeping the first terminal 1 to be electrically connected with Second terminal 2, the electrode assemblie in secondary cell is discharged, so as to hinder
The further rise of secondary cell internal pressure is stopped.Now, it should cause that the short circuit current flow in this electrical communication path is small as far as possible,
Therefore, secondary cell cap assembly also includes resistive elements 9, resistive elements 9 are series between Second terminal 2 and coping plate 3.Electricity
Resistance component 9 can increase the resistance in electrical communication path, to reduce short circuit current flow, so as to reduce the risk that contact chip 6 is melted.
In one embodiment, the middle body 63 of contact chip 6 is not melted, and maintains the contact condition with electric-conductor 7, at this moment,
It is electrically operated that electrode assemblie no longer performs charge and discharge.
As shown in figure 4, in the side of Second terminal 2, can also set conducting block 10, Second terminal 2 is electrically connected with conducting block 10,
Now, resistive elements 9 can be fixed between conducting block 10 and coping plate 3, now, and short circuit current flow is via contact chip 6, top cover
Piece 3, conducting block 10, resistive elements 9, Second terminal 2, the first terminal 1.However, it is desirable to which explanation, conducting block 10 not must
Will, according to the difference of the structure of resistive elements 9, conducting block 10 can optionally be set.
Secondary cell cap assembly 100 also includes being arranged on the Second terminal side insulating part 42 and second at Second terminal 2
Terminals side sealing ring 52, wherein, Second terminal side insulating part 42 is used to realize Second terminal 2 and the insulation of electrode assemblie, second
Terminals side sealing ring 52 is used to seal Second terminal 2 and coping plate 3.
As seen in figs. 5-6, the second aspect of the application provides a kind of secondary cell, and the secondary cell includes secondary cell
Cap assembly 100, housing 400 and electrode assemblie 500, wherein, cap assembly 100 is connected at the opening of housing 400 and shape
Into encapsulated space, electrode assemblie 500 is encapsulated in the encapsulated space, wherein, secondary cell cap assembly 100 is any of the above-described
Secondary cell cap assembly 100 described in embodiment.
Electrode assemblie 500 include the first pole piece, the second pole piece and be arranged between the first pole piece and the second pole piece every
Plate, the first terminal 1 is electrically connected with the first pole piece, and Second terminal 2 is electrically connected with the second pole piece.
Secondary cell also includes the first terminal side collector plate 301 and Second terminal side collector plate 302, the first terminal side current collection
First pole piece of the piece 301 respectively with the first terminal 1 and electrode assemblie 500 is electrically connected, and Second terminal side collector plate 302 is respectively with
The second pole piece electrical connection of two-terminal 2 and electrode assemblie 500.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of secondary cell cap assembly, including：The first terminal, Second terminal and coping plate, it is characterised in that
The coping plate and the first terminal insulation set, the coping plate are electrically connected with the Second terminal；
The coping plate includes body and being connected to the body and outstanding protrusion, by forming the protrusion
Depressed part is formed in the inwall side of the protrusion,
The secondary cell cap assembly also includes contact chip, and the contact chip is attached to the protrusion and is contained in described recessed
In the portion of falling into,
When secondary cell internal pressure exceed reference pressure when, the contact chip acted in the presence of the internal pressure with
The first terminal and the Second terminal are electrically connected.
2. secondary cell cap assembly according to claim 1, it is characterised in that the contact chip include marginal portion,
Crushed element and middle body, the marginal portion attach to the protrusion, and the crushed element connects the marginal portion
With the middle body, the crushed element is bent into towards the direction away from the protrusion and protruded.
3. secondary cell cap assembly according to claim 2, it is characterised in that institute is pointed to the outer wall of the protrusion
The direction for stating the inwall of protrusion is defined as thickness positive direction；Along thickness positive direction, the bottom surface of the contact chip is without departing from described
The inwall of body.
4. secondary cell cap assembly according to claim 1, it is characterised in that the protrusion is provided with first through hole,
The first terminal includes the epimere and hypomere being connected, and the epimere passes the first through hole, and the hypomere is contained in institute
State in depressed part.
5. secondary cell cap assembly according to claim 2, it is characterised in that also including being electrically connected with the first terminal
The electric-conductor connect,
The second through hole is further opened with the protrusion, the contact chip seals second through hole, when the secondary cell
When internal pressure exceedes reference pressure, the contact chip is moved towards the direction close to the electric-conductor and connect with the electric-conductor
Touch.
6. secondary cell cap assembly according to claim 5, it is characterised in that the inwall of the protrusion offers recessed
Groove, the groove is fixed in the groove around second through hole, and the marginal portion.
7. the secondary cell cap assembly according to claim any one of 1-6, it is characterised in that also including resistive elements,
The resistive elements are series between the Second terminal and the coping plate.
8. the secondary cell cap assembly according to claim any one of 1-6, it is characterised in that also including the first terminal side
Insulating part, the first terminal side insulating part is arranged at correspondence on the lower section of the coping plate, the first terminal side insulating part
The position of the contact chip offers gas and passes through hole.
9. secondary cell cap assembly according to claim 1, it is characterised in that the inwall of the body and the protuberance
Difference in height between the inwall in portion is 0.1~50mm.
10. a kind of secondary cell, including secondary cell cap assembly, housing and electrode assemblie, the secondary cell top cover group
Part is connected at the opening of the housing and forms encapsulated space,
The electrode assemblie includes the first pole piece, the second pole piece and is arranged between first pole piece and second pole piece
Dividing plate, the first terminal electrically connected with first pole piece, and the Second terminal is electrically connected with second pole piece；
The electrode assemblie is encapsulated in the encapsulated space, it is characterised in that
The secondary cell cap assembly is the secondary cell cap assembly described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720390135.2U CN206610838U (en) | 2017-04-14 | 2017-04-14 | Secondary cell cap assembly and secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720390135.2U CN206610838U (en) | 2017-04-14 | 2017-04-14 | Secondary cell cap assembly and secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206610838U true CN206610838U (en) | 2017-11-03 |
Family
ID=60167028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720390135.2U Active CN206610838U (en) | 2017-04-14 | 2017-04-14 | Secondary cell cap assembly and secondary cell |
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| Country | Link |
|---|---|
| CN (1) | CN206610838U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899441A (en) * | 2018-06-01 | 2018-11-27 | 合肥国轩高科动力能源有限公司 | Disconnect-type stop frame apron structure |
| CN115882176A (en) * | 2023-02-09 | 2023-03-31 | 深圳海润新能源科技有限公司 | Insulating assembly, end cover assembly, energy storage device and electric equipment |
| CN115995641A (en) * | 2023-02-09 | 2023-04-21 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| CN115995643A (en) * | 2023-02-09 | 2023-04-21 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| EP4415115A1 (en) * | 2023-02-09 | 2024-08-14 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Energy storage apparatus and electric device |
| WO2024164258A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage apparatus, and electric device |
| WO2024164272A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | Energy storage apparatus and electric device |
| WO2024164270A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | Insulating assembly, end cover assembly, energy storage apparatus, and electric device |
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2017
- 2017-04-14 CN CN201720390135.2U patent/CN206610838U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899441A (en) * | 2018-06-01 | 2018-11-27 | 合肥国轩高科动力能源有限公司 | Disconnect-type stop frame apron structure |
| CN115882176A (en) * | 2023-02-09 | 2023-03-31 | 深圳海润新能源科技有限公司 | Insulating assembly, end cover assembly, energy storage device and electric equipment |
| CN115995641A (en) * | 2023-02-09 | 2023-04-21 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| CN115995643A (en) * | 2023-02-09 | 2023-04-21 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage device and electric equipment |
| CN115882176B (en) * | 2023-02-09 | 2024-07-19 | 深圳海辰储能科技有限公司 | Insulation assembly, end cover assembly, energy storage device and electric equipment |
| EP4415115A1 (en) * | 2023-02-09 | 2024-08-14 | Shenzhen Hithium Energy Storage Technology Co., Ltd. | Energy storage apparatus and electric device |
| WO2024164258A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | End cover assembly, energy storage apparatus, and electric device |
| WO2024164272A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | Energy storage apparatus and electric device |
| WO2024164270A1 (en) * | 2023-02-09 | 2024-08-15 | 深圳海润新能源科技有限公司 | Insulating assembly, end cover assembly, energy storage apparatus, and electric device |
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