CN209658242U - Secondary cell and its cap assembly - Google Patents
Secondary cell and its cap assembly Download PDFInfo
- Publication number
- CN209658242U CN209658242U CN201920470061.2U CN201920470061U CN209658242U CN 209658242 U CN209658242 U CN 209658242U CN 201920470061 U CN201920470061 U CN 201920470061U CN 209658242 U CN209658242 U CN 209658242U
- Authority
- CN
- China
- Prior art keywords
- sealing
- insulation division
- cap assembly
- lamina tecti
- electrode fairlead
- 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.)
- Active
Links
Classifications
-
- 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
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to technical field of secondary batteries, in particular to a kind of secondary cell and its cap assembly.Cap assembly provided by the utility model, including with electrode fairlead lamina tecti, protrude into the second sealing and the second insulation division in electrode fairlead, and the second sealing and the second insulation division electrode fairlead be radially at least partly staggered and it is at least partly be overlapped in the height direction.Based on this, it can effectively block direct discharging gap and extend creepage distance, and then advantageously reduce the risk for the problems such as on fire or explosion occurs when bearing high pressure for secondary cell.
Description
Technical field
The utility model relates to technical field of secondary batteries, in particular to a kind of secondary cell and its cap assembly.
Background technique
Due to the secondary cells such as lithium ion battery have energy density is high, power density is high, be recycled often, storage
The advantages that time is long, it is commonly used on electric car.Full Vehicle System voltage is about between 300V~900V at present, battery core
In the case where being abnormal, it may appear that internal circuit disconnects or Fuse (fusing structure) is disconnected, and at this moment battery core can bear system
High back voltage, however, since the safe distance inside existing secondary cell is inadequate, bear the battery core meeting of high back voltage
There are the security risks such as on fire or explosion.
Summary of the invention
A technical problem to be solved in the utility model is: reduce secondary cell occur when bearing high pressure it is on fire or
The risk of the problems such as explosion.
In order to solve the above-mentioned technical problem, the utility model first aspect provides a kind of cap assembly of secondary cell,
Comprising:
Lamina tecti with a thickness of 0.01mm-10cm, and has electrode fairlead；
Lower insulating part, has the first insulation division and the second insulation division being connected to each other, and the first insulation division is located at lamina tecti
Lower section, the second insulation division are upwardly extended by the first insulation division and are at least partially disposed in electrode fairlead；With
Sealing element has the first sealing and the second sealing being connected to each other, and the first sealing position is in the upper of lamina tecti
On surface, the second sealing is extended downwardly by the first sealing and is at least partially disposed in electrode fairlead, and the second sealing
With the second insulation division electrode fairlead be radially at least partly staggered and it is at least partly be overlapped in the height direction.
In some embodiments, the inner wall for being at least partially disposed at the second insulation division and electrode fairlead of the second sealing it
Between.
In some embodiments, the second insulation division includes covering portion, and the surface close to the second sealing of covering portion is substantially
It is parallel to the surface close to the second insulation division of the second sealing, and the surface close to the second sealing of covering portion is coated on the
On at least partly surface of close second insulation division of two sealings.
In some embodiments, the top of the second insulation division is higher than contacting with the first sealing for the upper surface of lamina tecti
Part, alternatively, the top of the second insulation division flushes in or the part of the upper surface lower than lamina tecti contacted with the first sealing.
In some embodiments, cap assembly further includes terminal board, and terminal board is located above the first sealing and covers electricity
Pole fairlead has interval between the top of the second insulation division and the lower surface of terminal board.
In some embodiments, the lower part of the second sealing and the sealing of lower insulating part cooperate.
In some embodiments, the lower part of the second sealing and lower insulating part are interference fitted.
In some embodiments, lower insulating part further includes sealing fit portion, sealing fit portion protrude from the first insulation division and/
Or second insulation division upper surface or from the upper surface of the first insulation division and/or the second insulation division to lower recess, and second is close
The lower part in envelope portion and sealing fit portion sealing cooperate.
In some embodiments, sealing fit portion is set to the junction of the first insulation division and the second insulation division, alternatively, close
Envelope auxiliary section is set to the top of the second insulation division.
In some embodiments, sealing fit portion includes protruding from the first insulation division and/or the second insulation division upper surface
Boss, the longitudinal section shape of boss is triangular in shape, fan-shaped, trapezoidal or rectangle.
In some embodiments, the surface of sealing fit portion contacted with the second sealing is along direction court from the bottom to top
Close to electrode fairlead central axis direction tilt.
In some embodiments, the upper surface on the surface of sealing fit portion contacted with the second sealing and the first insulation division
Between angle be 10-85 °.
In some embodiments, sealing fit portion is set to the top of the second insulation division and by the upper surface of the second insulation division
To lower recess.
In some embodiments, sealing element further includes third sealing, third sealing position in lamina tecti lower surface with
Between the upper surface of first insulation division；Alternatively, lamina tecti lower surface is equipped with groove, a part of the first insulation division is located at groove
It is interior.
In some embodiments, lower insulating part further includes the support portion for supporting the first insulation division, and support portion is set to first
The lower surface of insulation division is simultaneously downwardly projecting by the lower surface of the first insulation division, alternatively, support portion is set to the connection of secondary cell
The upper surface of the tab interconnecting piece of plate is simultaneously upwardly extended by the upper surface of tab interconnecting piece.
In some embodiments, the height of support portion is less than or equal to lower surface and the tab interconnecting piece of the first insulation division
Difference in height between upper surface.
In some embodiments, along the radial direction of electrode fairlead, support portion it is at least partly Chong Die with the second sealing.
The utility model second aspect additionally provides a kind of secondary cell comprising the cap assembly of the utility model.
By setting sealing element to extending to the second sealing in electrode fairlead, and by the second sealing with
It is set as between the second insulation division of lower insulating part extended in electrode fairlead in the radially at least portion of electrode fairlead
It is staggered and is at least partly overlapped in the height direction with dividing, can effectively extend creepage distance, and then advantageously reduce secondary
The risk of the problems such as on fire or explosion occurs when bearing high pressure for battery.
By the way that the exemplary embodiment of the utility model is described in detail referring to the drawings, the utility model its
Its feature and its advantage will become apparent.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 shows the overall structure diagram of an embodiment of the present invention secondary cell.
Fig. 2 shows the explosive views of Fig. 1.
Fig. 3 shows the top view of Fig. 1.
Fig. 4 shows the A-A cross-sectional view of Fig. 3.
Fig. 5 shows the partial enlargement diagram of Fig. 4.
Fig. 6 shows the partial enlargement diagram of another embodiment.
Fig. 7 shows the partial enlargement diagram of another embodiment.
Fig. 8 shows the partial enlargement diagram of another embodiment.
In figure:
100, secondary cell；
10, cap assembly；
1, lamina tecti；11, electrode fairlead；12, raised；13, groove；
2, lower insulating part；21, the first insulation division；22, the second insulation division；23, sealing fit portion；24, support portion；22a, packet
Cover portion；
3, sealing element；31, the first sealing；32, the second sealing；33, third sealing；
4, electrode terminal component；41, terminal board；
20, connecting plate；201, tab interconnecting piece；202, terminal connection part；
30, electrode assembly；301, tab；302, plastic parts；
40, shell.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
There is every other embodiment obtained under the premise of carrying out creative work, fall within the protection scope of the utility model.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally,
Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality
Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because
This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself
Wide is inside and outside.
In the description of the present invention, it should be understood that limiting zero using the words such as " first ", " second "
Part, it is only for convenient for distinguishing to corresponding components, there is no Stated otherwise such as, above-mentioned word there is no particular meaning,
Therefore it should not be understood as the limitation to scope of protection of the utility model.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
In the secondary battery, cap assembly is covered in the top opening of shell, for positioned at the electrode assembly of enclosure interior
Confined space is provided with electrolyte etc., and the electric energy of electrode assembly then passes through the electrode terminal of cap assembly (terminal board or pole)
It is drawn to outside.
As a kind of structure type of cap assembly, cap assembly include lamina tecti, the terminal board as electrode terminal, under
Insulating part and sealing element, wherein lamina tecti is equipped with electrode fairlead, and terminal board, which is arranged above lamina tecti and covers electrode, to be drawn
Portal, lower insulating part is arranged in below lamina tecti and (connecting plate is for electricity for realizing the connecting plate of lamina tecti and secondary cell
Connecting tab and terminal board) between insulation and lamina tecti and electrode assembly between insulation, and sealing element is then arranged and is pushing up
For realizing sealing between cover board and terminal board.
During practicing the utility model, inventors have found that above-mentioned cap assembly, sealing element are generally integrally located at
Outside electrode fairlead, the creepage distance between lamina tecti and terminal board is shorter, meanwhile, the sealing effect of sealing element is poor, and
And the electrolyte on creepage distance is more, resistance is smaller, these are to cause secondary cell electrion (big because bearing high pressure
Fire even explosion etc.) one of the major reasons.Wherein, creepage distance refers to two conductive components along solid insulating material surface most
Short distance；And electric clearance then refers to the aerial shortest distance between two conductive components.It is conductive when creepage distance is longer
The risk that electrion occurs between body is lower.
In view of the foregoing, the utility model improves the structure of cap assembly, is based on improved cap assembly
Structure reaches and extends creepage distance and increase at least one of resistance effect on creepage distance, and then realizes the secondary electricity of reduction
The purpose of pond generation electrion risk.
Fig. 1-8 shows several embodiments of the utility model.
Referring to Fig.1-8, the cap assembly 10 of secondary cell 100 provided by the utility model, comprising:
Lamina tecti 1 with a thickness of 0.01mm-10cm, and has electrode fairlead 11；
Lower insulating part 2, has the first insulation division 21 and the second insulation division 22 being connected to each other, and the first insulation division 21 is located at top
The lower section of cover board 1, the second insulation division 22 are upwardly extended by the first insulation division 21, and at least partly position of the second insulation division 22
In electrode fairlead 11；With
Sealing element 3, has the first sealing 31 and the second sealing 32 being connected to each other, and the first sealing 31 is located at top cover
On the upper surface of plate 1, the second sealing 32 is extended downwardly by the first sealing 31, makes at least partly position of the second sealing 32
In electrode fairlead 11, and the second sealing 32 and the second insulation division 22 electrode fairlead 11 radially at least partly
It is staggered and is at least partly overlapped in the height direction.
By setting sealing element 3 to there is the second sealing 32 extended in electrode fairlead 11, and it is close by second
It is set as between envelope portion 32 and the second insulation division 22 of lower insulating part 2 extended in electrode fairlead 11 in electrode fairlead 11
Be radially at least partly staggered and be at least partly overlapped in the height direction, the utility model can extend lamina tecti 1
Creepage distance between electrode terminal, the risk that electrion problem occurs for secondary cell 100 can be effectively reduced in this.
Simultaneously as the second sealing 32 and the second insulation division 32 are in the radially at least partly wrong of electrode fairlead 11
It opens, in not being staggered radially for electrode fairlead 11 and up and down just accordingly, with respect to the second sealing 32 and the second insulation division 32
The case where to setting, the discharging gap between lamina tecti 1 and connecting plate 20 can be effectively blocked, this is also beneficial to reduce secondary electricity
The risk that high-tension ignition is even exploded occurs for pond 100.
In the present invention, the second sealing 32 and the second insulation division 22 electrode fairlead 11 radially at least
When being partly staggered, the second sealing 32 can be at least partially disposed at close 11 central axis of electrode fairlead of the second insulation division 22
The side of line, alternatively, can also be at least partially disposed between the second insulation division 22 and the inner wall of electrode fairlead 11.
Wherein, being at least partially disposed between the second insulation division 22 and the inner wall of electrode fairlead 11 when the second sealing 32
When, the second insulation division 22 can apply better squeezing action to the second sealing 32 and (apply along by electrode fairlead 11
Central axis to the direction of 11 inner wall of electrode fairlead active force), be based on this, the second sealing 32 can be with closer reliable
Ground fits on the inner wall of electrode fairlead 11, and so as to improve the sealing effect of sealing element 3, this aspect helps to reduce
The electrolyte of corresponding position increases resistance, periodically reduces electric current in voltage one, reduce the risk of electrion,.
In addition, in order to improve sealing effect, the utility model can also take other measures.
As one of other measures, that can will be set as between the lower part of the second sealing 32 and lower insulating part 2
This sealing cooperation.The sealing that can use lower insulating part 2 and the second sealing 32 in this way cooperates to improve the sealing of sealing element 3 and imitate
Fruit reduces the electrolyte on creepage distance, to reduce the generation of electrion phenomenon.
Wherein, the second sealing 32 can directly cooperate with the first insulation division 21 and/or the sealing of the second insulation division 22, but be
Realization better seal fiting effect, lower insulating part 2 can further include sealing fit portion 23, and sealing fit portion 23 protrudes from
The upper surface of one insulation division 21 and/or the second insulation division 22 or by the first insulation division 21 and/or the upper table of the second insulation division 22
Towards lower recess, and the lower part of the second sealing 32 and the sealing of sealing fit portion 23 cooperate.By in the first insulation division 21 and/or
On second insulation division 22 be arranged sealing fit portion 23, using convex or recessed sealing fit portion 23 come with the second sealing 32
Lower seal cooperation, directly matches with 32 lower seal of the second sealing relative to the first insulation division 21 and/or the second insulation division 22
The case where conjunction, lower insulating part 2 can cooperate in closer reliably sealing between 32 lower part of the second sealing, thus can also be more
It is effectively reduced the risk of the generations such as electrion.
As a kind of structure type of sealing fit portion 23, sealing fit portion 23 may include protruding from the first insulation division 21
And/or the boss of 22 upper surface of the second insulation division, the longitudinal section shape of the boss can it is triangular in shape, fan-shaped, trapezoidal or
Rectangle.Wherein, boss can be only located on the upper surface of the first insulation division 21, alternatively, can also be located at 21 He of the first insulation division
The junction of second insulation division 22.
As another structure type of sealing fit portion 23, sealing fit portion 23 also be can be set in the second insulation division 22
Top and from the upper surface of the second insulation division 22 to lower recess.
As it can be seen that the specific setting position of sealing fit portion 23 is without limitations, can both be only located on the first insulation division 21,
The junction of the first insulation division 21 and the second insulation division 22 can also be located at, or can also be only located on the second insulation division 22.
The sealing fit portion 23 of the utility model, the surface contacted with the second sealing 32 can be set to along by
Under supreme direction tilted towards the direction close to 11 central axis of electrode fairlead.Based on this, sealing fit portion 23 not only may be used
To apply upward active force to the second sealing 32, at the same time it can also be drawn to the application of the second sealing 32 along by electrode
11 central axis of hole and can also play the second sealing 32 certain to the active force in 11 inner wall direction of electrode fairlead
Guiding role, the second sealing 32 of guidance are flowed to 11 inner wall side of electrode fairlead, so as to realize that better seal is imitated
Fruit, the more fully electrolyte on reduction creepage distance.
Also, it is hermetically closer between 32 lower part of the second sealing and lower insulating part 2 in order to make, it can also be close by second
Sealing cooperation between 32 lower part of envelope portion and lower insulating part 2 is further arranged to be interference fitted, such as makes under the second sealing 32
Portion and sealing fit portion 23 are interference fitted.Due in this case, being contacted between lower insulating part 2 and 32 lower part of the second sealing
Closer, lower insulating part 2 can play certain compression (applying pressure upwards) to 32 lower part of the second sealing, so that
Therefore compression seal between lower insulating part 2 and the second sealing 32 can more effectively reduce the electrolyte on creepage distance,
To more effectively reduce the risk for electrion phenomenon occur.
And as the another kind in other measures, lower insulating part 2 can further include the support portion for supporting the first insulation division 21
24, support portion 24 is set to the lower surface of the first insulation division 21 and downwardly projecting by the lower surface of the first insulation division 21, alternatively, branch
Support part 24 is set to the upper surface of the tab interconnecting piece 201 of connecting plate 20 and is prolonged upwards by the upper surface of tab interconnecting piece 201
It stretches.Set support portion 24, due to that can be supported to the first insulation division 21, lower insulating part 2 can be effectively prevented
Tenesmus, and then be conducive to make more closely to contact between lower insulating part 2 and the second sealing 32, realize more reliable sealing effect
Fruit.
The utility model is further explained below with reference to each embodiment shown in Fig. 1-8.
First embodiment shown in Fig. 1-5 is combined to be explained first.
As depicted in figs. 1 and 2, in this embodiment, secondary cell 100 includes cap assembly 10, connecting plate 20, electrode
Component 30 and shell 40 etc..
Wherein, as shown in Figure 2, there is cavity, and top opening, for accommodate electrod component 30 etc. inside shell 40.Shell
Body 40 can be made of metal materials such as aluminium, aluminium alloy or nickel-plated steels.
Electrode assembly 30 is the core component of secondary cell 100, is contained in the cavity inside shell 40, and by first
Pole piece, the second pole piece and the insulating spacer between the first pole piece and the second pole piece stack or wind together formation.Wherein,
One in one pole piece and the second pole piece is used as positive plate and another is used for negative electrode tab, and the first pole piece and the second pole piece have
There is the tab 301 of painting part and the uncoated active material extended by painting part coated with active material.Electrode assembly 30
Generated electric energy is transmitted outward by tab 301.Wherein, the corresponding tab 301 of positive plate is properly termed as anode ear (position in figure
A tab 301 in right side), and the corresponding tab 301 of negative electrode tab is then known as negative electrode lug and (is located at a tab in left side in figure
301).Also, as shown in figure 4, on connecting plate 20 corresponding with anode ear, be additionally provided with Fuse (fusing structure, generally
Hole), and plastic parts 302 is also arranged on the part equipped with Fuse of connecting plate 20, wherein Fuse can be sent out when electric current is excessive
Circuit is cut off in raw fusing, and plastic parts 302 overlaps again after can preventing Fuse from fusing, and plays the role of safeguard protection.
Cap assembly 10 is covered on the top opening of shell 40, for closing the internal cavities of shell 40, by electrode group
Part 30 is sealed in inside shell 40, and for exporting electric energy caused by electrode assembly 30 to shell 40.Such as Fig. 2 institute
Show, in this embodiment, cap assembly 10 includes lamina tecti 1, electrode terminal component 4, sealing element 3 and lower insulating part 2.
Lamina tecti 1 is covered on the top opening of shell 40, and provides for electrode terminal 4, sealing element 3 and lower insulating part 2 etc.
Installation foundation.As shown in Figure 2, the lamina tecti 1 of the embodiment is in lamellar, and it has and is adapted with 40 top opening of shell
Shape and size, facilitate lamina tecti 1 and the top opening of shell 40 to connect, close shell 40 top opening.Meanwhile top cover
Plate 1 is equipped with electrode fairlead 11, which is through-hole, in order to which electrode terminal component 4 and tab 301 are electrically connected
It connects, realizes electric energy by the extraction of interior.Correspondingly with two tabs 301, the quantity of electrode fairlead 11 is also two,
Respectively correspond anode ear and negative electrode lug.
Electrode terminal component 4, sealing element 3 and lower insulating part 2 are arranged on lamina tecti 1, and corresponding to two tabs 301
Ground, the quantity of electrode terminal component 4, sealing element 3 and lower insulating part 2 are also two, wherein electrode tip corresponding with anode ear
One group of sub-component 4, seal assembly 3 and lower insulating part 2 composition, and negative terminal component 4 corresponding with negative electrode lug, seal assembly 3
Form another group with lower insulating part 2, two groups of structure settings be it is identical, to simplify structure.Therefore, main description wherein one below
Group.When if desired referring to two groups, then it is subject to respectively just " and " negative " name, to facilitate differentiation.
Electrode terminal component 4 is set to the top of lamina tecti 1, and for being electrically connected tab 301.It include electrode terminal and
Terminal fixing piece, electrode terminal are electrically connected with tab 301, and electrode terminal is connect by terminal fixing piece with lamina tecti 1.
Specifically, as shown in Figure 4 and Figure 5, in this embodiment, electrode terminal is not using the pole protruded into inside shell 40
Structure, but the structure type of terminal board 41 is used, which covers electrode fairlead 11, and passes through connecting plate 20 and pole
Ear 301 is electrically connected.Since relative to the pole protruded into inside shell 4 via electrode fairlead 11, terminal board 41 draws positioned at electrode
Portal outside 11, without occupying the inner space of shell 4, therefore, the energy density of secondary cell 100 can be effectively improved.
Terminal board 41 can be round or square sheet or thin plate-shaped structure.Wherein, terminal board 41 corresponding with anode ear is known as anode
Daughter board, and terminal board corresponding with negative electrode lug is known as negative terminal daughter board.
In this embodiment, terminal board 41 is electrically connected by connecting plate 20 with tab 301.Wherein, the setting of connecting plate 20 exists
It, will be caused by electrode assembly 30 for being electrically connected tab 301 and terminal board 41 between electrode assembly 30 and cap assembly 10
Electric energy is transferred to terminal board 41, and then terminal board 41 is facilitated to lead to electric energy outside secondary cell 100.As shown in Figure 2, In
In the embodiment, the quantity of connecting plate 20 is two, and one of connecting plate 20 is electrically connected anode ear and anode daughter board, another
A connecting plate 20 is then electrically connected negative electrode lug and negative terminal daughter board.
In order to simplify structure, in this embodiment, two connecting plates 20 use identical structure.As shown in Figure 4 and Figure 5,
The connecting plate 20 of the embodiment includes tab interconnecting piece 201 and terminal connection part 202, and tab interconnecting piece 201 is electrically connected with tab 301
It connects, terminal connection part 202 is then electrically connected with terminal board 41.Electrical connections herein can such as be realized using welding manner.And
And in conjunction with Fig. 4 and Fig. 5 it is found that in this embodiment, tab interconnecting piece 20 is plate-like, and it is substantially parallel with lamina tecti 1；And it holds
Sub- interconnecting piece 202 is then connect with tab interconnecting piece 201 and protruding upward relative to tab interconnecting piece 201, and the terminal connection part
202 protrude into electrode fairlead 11 and contacted with terminal board 41 so that it is convenient to terminal connection part 202 be located at electrode fairlead 11
External terminal board 41 welds, and realizes being electrically connected between terminal connection part 202 and terminal board 41.Wherein terminal connection part 202
Can be with convex closure structure cylindrical, it can be by being stamped and formed out to connecting plate 20.
Sealing element 3 is arranged between lamina tecti 1 and terminal board 41, for being sealed to electrolyte etc., prevents electrolyte
It is equal to leak, to improve the use reliability of secondary cell 100.As shown in figure 5, in this embodiment, sealing element 3 includes the
One sealing 31 and the second sealing 32, wherein the first sealing 31 is arranged on the upper surface of lamina tecti 1, i.e., this is first close
Envelope portion 31 is located between the upper surface of lamina tecti 1 and the lower surface of terminal board 41, and such terminal board 41 can be by the first sealing
31 are pressed in the upper surface of lamina tecti 1, so that forming seal line together between terminal board 41 and lamina tecti 1；And the second sealing
32 connect with the first sealing 31 and are extended downward into electrode fairlead 11 by the first sealing 31.Sealing element 3 is whole can
To use ring structure, at this point, the first sealing 31 and the second sealing 32 are in a ring and concentrically with respect to one another, and the second sealing
Portion 32 is located at 31 lower section of the first sealing and has the outer diameter less than the first sealing 31.
And in order to realize the firm setting of sealing element 3, as shown in figure 5, in this embodiment, lamina tecti 1 with it is first close
The upper surface that envelope portion 31 contacts is equipped with protrusion 12 protruding upward, and the protrusion 12 and the first sealing 31 are clamped, thus real
Now to the limit of the first sealing 31, so that sealing element 3 is more stably set on the upper surface of lamina tecti 1, it is not easy to
Electrode fairlead 11 is radially subjected to displacement.The protrusion 12 can be formed using impact style, in this case, in lamina tecti
The position corresponding with the protrusion 12 of 1 lower surface will form groove 13, which is recessed upwards by the lower surface of lamina tecti 1.
The structure of above-mentioned sealing element 3 is different from existing sealing element.In the prior art, though sealing element equally has above-mentioned the
One sealing 31 but and does not have above-mentioned second sealing 32.And the embodiment adds the second sealing 32 in sealing element 3,
It is advantageous in that, can be convenient sealing element 3 by with lamina tecti 1 and the cooperation of lower insulating part 2, Lai Yanchang creepage distance, and improve
Sealing effect, and then solve the problems, such as electrion, next this point will be described in more detail in conjunction with lower insulating part 2.
Lower insulating part 2 is general using modeling for realizing the insulation between lamina tecti 1 and electrode assembly 30 and connecting plate 20
The insulating materials such as material are made.As shown in Fig. 2, Fig. 4 and Fig. 5, the lower insulating part 2 of the embodiment is whole substantially plate-like comprising
First insulation division 21, the second insulation division 22 and sealing fit portion 23, the first insulation division 21 are located at the lower section of lamina tecti 1, and second absolutely
Edge 22 connect with the first insulation division 21 and is extended upwardly in electrode fairlead 11 by the first insulation division 21, sealing fit portion 23
The junction of first insulation division 21 and the second insulation division 22 is then set and in protruding upward by the upper surface of the first insulation division 21
Boss structure.Second insulation division 22 can be the hollow cylindrical protrusion being arranged on 21 upper surface of the first insulation division, and
Sealing fit portion 23 then can be the annular boss being arranged around 22 root of the second insulation division.
Wherein, as shown in figure 5, in this embodiment, the second insulation division 22 is integrally located at the right side of the second sealing 32, and
Second insulation division 22 extends upwardly to higher position, and top is located at contacting with the first sealing 31 for 1 upper surface of lamina tecti
Partial top.Based on this, the second insulation division 22 and the second sealing 32 are in left and right directions (i.e. the radial direction of electrode fairlead 11)
On be arranged in a staggered manner, the second sealing 32 is integrally located between the second insulation division 22 and the inner wall of electrode fairlead 11, and second absolutely
Edge 22 and the second sealing 32 are be overlapped in the up-down direction.
Based on above-mentioned setting, the case where relative to the second sealing 32 are lacked, electricity is climbed between lamina tecti 1 and terminal board 41
Distance is extended.When sealing element 3 does not have the second sealing 32, the creepage distance between lamina tecti 1 and terminal board 41 is only
It is substantially equal to the height between the first part contacted of sealing 31 and 41 lower surface of terminal board of 1 upper surface of lamina tecti, and
In this embodiment, between lamina tecti 1 and terminal board 41 climb power path along the first insulation division 21 be located at groove 13 just under
Upper surface, the surface of sealing fit portion 23 contacted with the second sealing 32 and the close electrode of the second insulation division 32 of side
The surface of 11 central axis side of fairlead extends to the lower surface of terminal board 41, and creepage distance is obviously greater than table on lamina tecti 1
The height between the first part contacted of sealing 31 and 41 lower surface of terminal board in face is greater than sealing element 3 and does not have the
Creepage distance when two sealings 32.
Meanwhile (i.e. the two is in electrode fairlead relative to the second insulation division 22 and the setting of about 32 face of the second sealing
11 are not staggered radially each other) the case where, above-mentioned setting can also block the electric equipment compartment between lamina tecti 1 and connecting plate 20
Gap.
Also, since the second sealing 32 is integrally located between the second insulation division 22 and the inner wall of electrode fairlead 11, the
Two insulation divisions 22 can squeeze entire second sealing 32 towards the direction close to 11 inner wall of electrode fairlead, make the second sealing 32
It is closer and more reliably contacted with 11 inner wall of electrode fairlead, it is thus possible to which enough lift-off seals, reduction are climbed on power path
Electrolyte increases resistance, reduces security risk.Meanwhile second insulation division 22 certain guarantor can be played to the second sealing 32
Shield effect reduces contact of the sealing element 3 with electrolyte, can reduce what sealing element 3 was swollen under electrolyte effect in this way
Risk is conducive to extend the service life of sealing element 3.And set the second insulation division 22 to extend to higher position, it can use
Two insulation divisions 22 apply squeezing action and protective effect to the more parts in 22 short transverse of the second sealing.
Wherein as shown in figure 5, the second insulation division 22 for being located at 32 right side of the second sealing of the embodiment includes covering portion
22a, covering portion 22a are located at the top of the second insulation division 22, whole substantially parallel with the second sealing 32, and it is coated on
On the surface of second sealing 32.Since set covering portion 22a can increase the second insulation division 22 and the second sealing 32
Sealing area, and the superposed part of the second sealing 32 is played a certain protective role, accordingly, with respect to not setting
The case where setting covering portion 22a can further improve sealing effect, more effectively reduce security risk and extend sealing element 3
Service life.
It should be noted that covering portion 22a is not limited to the schematic structure of foregoing description, as long as in fact, covering portion
The surface close to the second sealing 32 of 22a is roughly parallel to the surface close to the second insulation division 22 of the second sealing 32, and
The surface close to the second sealing 32 of covering portion 22a is coated on at least portion close to the second insulation division 22 of the second sealing 32
Divide on surface.
In addition, in this embodiment, the second insulation division 22 upwardly extended not with the following table face contact of terminal board 41,
That is there is interval between the top (and top of covering portion 22a) of the second insulation division 22 and the lower surface of terminal board 41, such as
The height h at the interval can be greater than or equal to 0.01mm, and be less than or equal to 1 lower surface of lamina tecti with the first sealing 31
Difference in height between 41 lower surface of part and terminal board of contact.Based on this, the second insulation division 22 can be made effectively to squeeze the
Under the premise of two sealings 32, the second insulation division 22 is avoided to drop because bearing the suppressing action of terminal board 41, this is conducive to more
Realize lower insulating part 2 that lower insulating part 2 will be described to the compression to the left of sealing element 3 and next to close well
The upward compression of sealing 3.
In this embodiment, the second sealing 32 with sealing fit portion 23 by being interference fitted, to realize that lower insulating part 2 is right
The upward compression of sealing element 3.Specifically, as shown in figure 5, in this embodiment, sealing fit portion 23 is setting the
The boss of 22 junction of one insulation division 21 and the second insulation division, longitudinal cross-section is triangular in shape, and have be obliquely installed with the
The surface of two sealings, 32 lower contacts.For convenience, by sealing fit portion 23 and the second sealing 32 lower contacts
Surface be known as action face.As shown in Figure 5, which abuts with the lower part of the second sealing 32, and the two interferes with each other,
Formed interference fit, and the action face along direction from the bottom to top towards close to 11 central axis of electrode fairlead direction
(being to the right in Fig. 5) inclination.
Since the lower part of sealing fit portion 23 and the second sealing 32 is interference fitted, sealing fit portion 23 is not only close with second
The lower contacts in envelope portion 32, moreover it is possible to upward compression be applied to the second sealing 32, so that sealing fit portion 23 and second
Closer cooperation can be reliably sealed between the lower part of sealing 32, therefore, sealing effect is more preferable, can more effectively reduce
Electrolyte on creepage distance, to more effectively improve the job security of secondary cell 100.
And action face is arranged along direction from the bottom to top towards the side close to 11 central axis of electrode fairlead
To inclination, then make sealing fit portion 23 while applying upward compression to the second sealing 32, moreover it is possible to close to second
Envelope portion 32 applies along the squeezing action by 11 central axis of electrode fairlead to 11 inner wall direction of electrode fairlead, in this way, close
Squeezing action to the left can be applied to the second sealing 32 together with covering portion 22a by sealing auxiliary section 23, increase lower insulating part 2
To the squeezing action power of sealing element 3, realize sealing element 3 to the more substantially and securely sealing effect of electrode fairlead 11.Also, this inclines
The action face being tiltedly arranged can also can also play certain guiding role to the second sealing 32, guide the second sealing 32
Internal flow to the groove 13 for being located at 11 inner wall side of electrode fairlead fills groove due to can use sealing element 3 in this way
13 at least partly, to being at least partly sealed for groove 13, reduces the electrolyte in groove 13, i.e., on reduction creepage distance
Electrolyte therefore can further increase resistance, reduce electric current under identical voltage, and then reduce igniting or explosion safety
Risk.
Wherein, the angle between action face and the upper surface of the first insulation division 21 can be set to 10-85 °, in reality
While existing excellent sealing, reduce between lower insulating part 2 and the second sealing 32 and the possibility in gap occur, block lamina tecti 1 with
Discharging gap between connecting plate 20.
First insulation division 21, the second insulation division 22 and sealing fit portion 23 can be an integral structure or split type structure.
In this embodiment, the first insulation division 21, the second insulation division 22 and sealing fit portion 23 are an integral structure.
In summary it is found that cap assembly 10 in Fig. 1-5 illustrated embodiment, has longer creepage distance, meanwhile, it climbs
Electrolyte is less on electrical distance, therefore, when bearing high back voltage, it is not easy to it is safe igniting even explosion issues, use occur
Property is higher.
However, in order to improve the safety in utilization of secondary cell 100, the structure of cap assembly 10 is not limited to above-mentioned figure
Shown in 5.Fig. 6-8 shows several in other possible embodiments.
Fig. 6-8 is considered as the modification of embodiment illustrated in fig. 5, therefore, is not repeated to retouch below part identical with Fig. 5
It states, is specifically referred to front and is understood that the description of embodiment illustrated in fig. 5, next only emphasis describes each embodiment not
Same place.
Wherein, in the embodiment shown in fig. 6, cap assembly 10 still includes the second sealing 32, the second insulation division 22
With sealing fit portion 23, and sealing fit portion 23 is matched yet by inclined action face and the lower part interference of the second sealing 32
It closes, and is essentially consisted in the difference of embodiment illustrated in fig. 5, on the one hand, the second insulation division 22 of the embodiment no longer includes
Superposed covering portion 22a, and only include the part positioned at lower part connecting with sealing fit portion 23；On the other hand, the reality
Applying the lower insulating part 2 of example not only includes the first insulation division 21, the second insulation division 22 and sealing fit portion 23, further includes setting the
Support portion 24 on one insulation division, 21 lower surface.
Specifically, it will be appreciated from fig. 6 that in this embodiment, the second insulation division 22 no longer includes covering portion 22a, and it is upwards
Lower position is extended to, top is located at the lower section for the part of 1 upper surface of lamina tecti contacted with the first sealing 31.By making
Second insulation division 22 is set as extending upwardly to lower position, it is possible to reduce the second insulation division 22 is empty to 11 inside of electrode fairlead
Between occupancy so that the second insulation division 22 no longer needs to occupy the space on 11 top of electrode fairlead, since this can be for positioned at electricity
The terminal connection part 202 on 11 top of pole fairlead reserves more spaces, and terminal connection part 202 is made to can be set to have more
Big surface area facilitates terminal connection part 202 and terminal board 41 to weld with bigger area, therefore, is conducive to increase connecting plate
Bonding area between 20 and terminal board 41, conveyance capacity can be enhanced in this, reduces fever.Wherein, in addition to top cover can be lower than
The part of the upper surface of plate 1 contacted with the first sealing 31, the top of the second insulation division 22 may be also configured to flush in
The part of the upper surface of lamina tecti 1 contacted with the first sealing 31 is also beneficial to increase terminal connection part 202 and terminal at this time
Bonding area between plate 41.
Also, compare Fig. 5 and Fig. 6 it is found that the second insulation division 22 shown in second insulation division 22 and Fig. 5 of the embodiment
Difference also reside in, the part connecting with sealing fit portion 23 of the second insulation division 22 of the second embodiment is drawn in electrode
Hole 11 radially has smaller width, since this can also reduce by the second insulation division 22 to 11 inner space of electrode fairlead
It occupies, therefore, is also beneficial to increase the bonding area between connecting plate 20 and terminal board 41.
Meanwhile it will be appreciated from fig. 6 that in this embodiment, support portion 24 is located at the first insulation division 21 and tab interconnecting piece 201
Between, the lower surface by the first insulation division 21 is downwardly projecting, plays a supporting role to the first insulation division 21.Wherein, support portion
24 height can be set to less than or equal between the lower surface of the first insulation division 21 and the upper surface of tab interconnecting piece 201
Difference in height.
To make terminal connection part 202 and terminal board 41 welds well, the height of connecting plate 20 usually above terminal board 41 and
The difference in height of 1 lower surface of lamina tecti, simultaneously because the reasons such as setting plastic parts 302, therefore, tab interconnecting piece 201 and first is absolutely
Gap is inevitably present between edge 21, and the embodiment is supported in the support portion of 21 lower section of the first insulation division by setting
24, the gap between tab interconnecting piece 201 and the first insulation division 21 can be effectively made up, and change the cantilever of the second insulation division 22
Girder construction, even if so that downward pressure of the lower insulating part 2 by applications such as sealing elements 3, is also not easy to drop, this can be mentioned
Contact compactness between relative superiority or inferiority insulating part 2 and sealing element 3, convenience descend the more reliably compressive seal 3 of insulating part 2, more effectively
Reduce the electrolyte on creepage distance in ground.Meanwhile being set to support portion 2 on the lower surface of first insulation division 21, it can also mention
The intensity of relative superiority or inferiority insulating part 2 is reduced and is deformed caused by lower insulating part 2 in production and handling process.
Also, it will be appreciated from fig. 6 that in this embodiment, along the radial direction (left and right directions in Fig. 6) of electrode fairlead 11,
A part of support portion 24 is Chong Die with the second sealing 32, that is, a part of support portion 24 be located at the second sealing 32 just under
Side, such support portion 24 can preferably bear the downward pressure that sealing element 3 applies lower insulating part 2 and act on, Jin Erke
More effectively to keep the sealing state between sealing element 3 and lower insulating part 2.
It should be appreciated that support portion 24 both can be set to male structure under the annular of a whole circle, also can be set to wrap
Include at least two lower protrusions being spaced each other；In addition, support portion 24 also can be set in addition to can be set on lower insulating part 2
On connecting plate 20, for example, support portion 24 can be set the upper surface in tab interconnecting piece 201 and by tab interconnecting piece 201
Upper surface upwardly extends, and support portion 24 at this time can also play a supporting role to lower insulating part 2, thus make lower insulating part 2 with it is close
It is closer between sealing 3 reliably to seal.
Embodiment shown in Fig. 7 is the modification of embodiment illustrated in fig. 6.As shown in fig. 7, implementing shown in the embodiment and Fig. 6
Example is identical, and the second insulation division 22 does not include covering portion 22a, and lower insulating part 2 further includes support portion 24, and with it is real shown in Fig. 6
The difference for applying example essentially consists in, and in this embodiment, sealing element 3 not only includes the first insulation division 31 and the second insulation division
32, also simultaneously including third insulation division 33, which is located at the upper of the lower surface of lamina tecti 1 and the first insulation division 21
Between surface.Specifically, as shown in Figure 7, the third insulation division 33 of the embodiment is located in groove 13, and is full of groove 13.
By being filled up using third insulation division 33 to entire groove 13, sealing of the formation to groove 13 can be into one
Step reduces the electrolyte in groove 13, and then can more effectively improve the safety in utilization of secondary cell 100.
Alternatively, third insulation division 33 can also be only filled with the part of groove 13, or can also to be not provided with third exhausted
Edge 33, and a part of the first insulation division 21 is located in groove 13, due at this moment utilizing first be located in groove 13
The electrolyte for being partially filled with groove 13, can also reducing in groove 13 of insulation division 21, therefore also contribute to improving secondary cell
100 safety in utilization.
For complex chart 5-7 it is found that in aforementioned three embodiments, sealing fit portion 23 is arranged at the first insulation division 21 and
The junction of two insulation divisions 22, and be longitudinal cross-section boss triangular in shape, and all have inclined action face, however make
For modification, sealing fit portion 23 can also be arranged on the top of the second insulation division 22, alternatively, being the sealing fit portion of boss
23 longitudinal cross-section can also be in rectangle, the trapezoidal or other shapes such as fan-shaped, then alternatively, sealing fit portion 23 can also be no longer
Using boss structure protruding upward, but use the structure type to lower recess.
The variation example that Fig. 8 is shown in which.As shown in Figure 8, in this embodiment, sealing fit portion 23 is no longer arranged
In the junction of the first insulation division 21 and the second insulation division 22, but it is set to the top of the second insulation division 22, and seals cooperation
Upper surface of the portion 23 not by the second insulation division 22 is protruding upward, but from the upper surface of the second insulation division 22 to lower recess.
By in the setting of the top of the second insulation division 22 from 22 upper surface of the second insulation division to the sealing fit portion of lower recess
23, on the one hand, sealing fit portion 23 still can be easily and reliably interference fitted with the lower part of the second sealing 32, on the other hand, the
The top of two insulation divisions 22 forms step structure, and the part of step structure upwardly extended by sealing fit portion 23 is coated on second
On the surface of the 11 central axis side of close electrode fairlead of sealing 32, covering portion 22a shown in Fig. 5 can be functioned similarly to
Effect, the second sealing 32 is extruded on 11 inner wall of electrode fairlead, realize better seal effect.
It is comprehensive aforementioned it is found that the utility model cap assembly 10, secondary cell 100 can be effectively reduced height occurs and press
Therefore the risk of electrical phenomena is applied in secondary cell 100, can effectively improve secondary cell 100 using safe
Property.Therefore, the utility model additionally provides a kind of secondary cell 100 based on the utility model cap assembly 10.The secondary electricity
Pond 100 is particularly applicable in electric car, by reducing security risk brought by high back voltage, to be effectively improved electricity
The performance of electrical automobile.
The foregoing is merely the exemplary embodiments of the utility model, are not intended to limit the utility model, all in this reality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the utility model
Within protection scope.
Claims (18)
1. a kind of cap assembly (10) of secondary cell (100) characterized by comprising
Lamina tecti (1) with a thickness of 0.01mm-10cm, and has electrode fairlead (11)；
Lower insulating part (2) has the first insulation division (21) and the second insulation division (22) being connected to each other, first insulation division
(21) it is located at the lower section of the lamina tecti (1), second insulation division (22) is upwardly extended simultaneously by first insulation division (21)
It is at least partially disposed in the electrode fairlead (11)；With
Sealing element (3) has the first sealing (31) and the second sealing (32) being connected to each other, first sealing (31)
On the upper surface of the lamina tecti (1), second sealing (32) is extended downwardly simultaneously by first sealing (31)
It is at least partially disposed in the electrode fairlead (11), and second sealing (32) and second insulation division (22) are in institute
State radially at least partly being staggered and being at least partly overlapped in the height direction for electrode fairlead (11).
2. cap assembly (10) according to claim 1, which is characterized in that second sealing (32) is at least partly
Between second insulation division (22) and the inner wall of the electrode fairlead (11).
3. cap assembly (10) according to claim 1, which is characterized in that second insulation division (22) includes covering portion
The surface close to second sealing (32) of (22a), the covering portion (22a) are roughly parallel to second sealing
(32) the surface close to second insulation division (22), and close second sealing (32) of the covering portion (22a)
Surface be coated on second sealing (32) close to second insulation division (22) at least partly surface on.
4. cap assembly (10) according to claim 1, which is characterized in that the top of second insulation division (22) is higher than
The part of the upper surface of the lamina tecti (1) contacted with first sealing (31), alternatively, second insulation division (22)
Top flush in or lower than the lamina tecti (1) upper surface the part contacted with first sealing (31).
5. cap assembly (10) according to claim 1, which is characterized in that the cap assembly (10) further includes terminal board
(41), the terminal board (41) is located above first sealing (31) and covers the electrode fairlead (11), and described the
There is interval between the top of two insulation divisions (22) and the lower surface of the terminal board (41).
6. -5 any cap assembly (10) according to claim 1, which is characterized in that under second sealing (32)
Portion and lower insulating part (2) sealing cooperate.
7. cap assembly (10) according to claim 6, which is characterized in that the lower part of second sealing (32) and institute
State lower insulating part (2) interference fit.
8. cap assembly (10) according to claim 6, which is characterized in that the lower insulating part (2) further includes that sealing is matched
Conjunction portion (23), the sealing fit portion (23) protrude from first insulation division (21) and/or second insulation division (22)
Upper surface or from the upper surface of first insulation division (21) and/or second insulation division (22) to lower recess, and it is described
The lower part of second sealing (32) and the sealing fit portion (23) sealing cooperate.
9. cap assembly (10) according to claim 8, which is characterized in that the sealing fit portion (23) is set to described
The junction of first insulation division (21) and second insulation division (22), alternatively, the sealing fit portion (23) be set to it is described
The top of second insulation division (22).
10. cap assembly (10) according to claim 8, which is characterized in that the sealing fit portion (23) includes protrusion
Boss in first insulation division (21) and/or second insulation division (22) upper surface, the longitudinal cross-section shape of the boss
Shape is triangular in shape, fan-shaped, trapezoidal or rectangle.
11. cap assembly (10) according to claim 8, which is characterized in that the sealing fit portion (23) with it is described
The surface of second sealing (32) contact is along direction from the bottom to top towards close to electrode fairlead (11) central axis
Direction inclination.
12. cap assembly (10) according to claim 11, which is characterized in that the sealing fit portion (23) with it is described
Angle between the surface of second sealing (32) contact and the upper surface of first insulation division (21) is 10-85 °.
13. cap assembly (10) according to claim 9, which is characterized in that the sealing fit portion (23) is set to institute
State the top of the second insulation division (22) and from the upper surface of second insulation division (22) to lower recess.
14. -5 any cap assembly (10) according to claim 1, which is characterized in that the sealing element (3) further includes the
Three sealings (33), the third sealing (33) be located at the lamina tecti (1) lower surface and first insulation division (21)
Upper surface between；Alternatively, lamina tecti (1) lower surface is equipped with groove (13), one of first insulation division (21)
Quartile is in the groove (13).
15. -5 any cap assembly (10) according to claim 1, which is characterized in that the lower insulating part (2) further includes
The support portion (24) of first insulation division (21) is supported, the support portion (24) is set under first insulation division (21)
Surface is simultaneously downwardly projecting by the lower surface of first insulation division (21), alternatively, the support portion (24) is set to secondary cell
(100) upper surface of the tab interconnecting piece (201) of connecting plate (20) is simultaneously upward by the upper surface of the tab interconnecting piece (201)
Extend.
16. cap assembly (10) according to claim 15, which is characterized in that the height of the support portion (24) be less than or
Equal to the difference in height between the lower surface of first insulation division (21) and the upper surface of the tab interconnecting piece (201).
17. cap assembly (10) according to claim 15, which is characterized in that along the diameter of the electrode fairlead (11)
To at least partly Chong Die with the second sealing (32) of, the support portion (24).
18. a kind of secondary cell (100), which is characterized in that including the cap assembly (10) as described in claim 1-17 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920470061.2U CN209658242U (en) | 2019-04-09 | 2019-04-09 | Secondary cell and its cap assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920470061.2U CN209658242U (en) | 2019-04-09 | 2019-04-09 | Secondary cell and its cap assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209658242U true CN209658242U (en) | 2019-11-19 |
Family
ID=68529007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920470061.2U Active CN209658242U (en) | 2019-04-09 | 2019-04-09 | Secondary cell and its cap assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209658242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176557A (en) * | 2019-04-09 | 2019-08-27 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cover assembly thereof |
| WO2022036531A1 (en) * | 2020-08-17 | 2022-02-24 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and method and apparatus for preparing battery cell |
-
2019
- 2019-04-09 CN CN201920470061.2U patent/CN209658242U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176557A (en) * | 2019-04-09 | 2019-08-27 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cover assembly thereof |
| WO2020207382A1 (en) * | 2019-04-09 | 2020-10-15 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cover assembly |
| CN110176557B (en) * | 2019-04-09 | 2024-04-05 | 宁德时代新能源科技股份有限公司 | Secondary battery and top cap subassembly thereof |
| WO2022036531A1 (en) * | 2020-08-17 | 2022-02-24 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and method and apparatus for preparing battery cell |
| CN115280584A (en) * | 2020-08-17 | 2022-11-01 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and method and device for preparing battery cell |
| JP2023512952A (en) * | 2020-08-17 | 2023-03-30 | 寧徳時代新能源科技股▲分▼有限公司 | BATTERY CELL, BATTERY, BATTERY CELL MANUFACTURING METHOD AND APPARATUS |
| JP7430807B2 (en) | 2020-08-17 | 2024-02-13 | 寧徳時代新能源科技股▲分▼有限公司 | Battery cells, batteries, battery cell manufacturing methods and devices |
| CN115280584B (en) * | 2020-08-17 | 2024-04-12 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, method and device for preparing battery cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110176557A (en) | Secondary battery and top cover assembly thereof | |
| CN209658246U (en) | Cap assembly and secondary cell | |
| EP3790072B1 (en) | Secondary battery top cover assembly and secondary battery | |
| KR101233573B1 (en) | Secondary battery | |
| JP5588941B2 (en) | Secondary battery | |
| KR20040026258A (en) | Electorde assembly for lithium ion cell and lithium ion cell using the same | |
| CN112531295A (en) | Lithium ion battery structure and tab electric connection method | |
| KR100954587B1 (en) | Cap assembly and secondary battery using the same | |
| CN209087917U (en) | Secondary cell | |
| CN103943809A (en) | Secondary battery | |
| CN209658242U (en) | Secondary cell and its cap assembly | |
| CN209658243U (en) | Secondary cell cap assembly and secondary cell | |
| CN112290077A (en) | Tab-free battery and preparation method thereof | |
| KR100599792B1 (en) | Secondary battery, electrodes assembly and plate using the same | |
| CN209169206U (en) | Secondary cell | |
| CN109841910B (en) | Liquid metal battery | |
| CN208336334U (en) | Secondary cell | |
| KR20090032272A (en) | Secondary battery | |
| WO2023151321A1 (en) | Explosion-proof valve, battery cover, and battery | |
| CN217387315U (en) | Battery structure subassembly, battery and electric vehicle | |
| CN115986341A (en) | Assembly structure of current collecting disc and cover cap, sealing assembly method and battery | |
| CN114937854A (en) | Battery pack, battery and electric vehicle | |
| KR20220162580A (en) | Cylindrical battery can assembly and its manufacturing method | |
| CN207690844U (en) | Cap assembly, secondary cell and automobile | |
| CN217387470U (en) | Battery structure subassembly, battery and electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |