CN207690876U - Support element and secondary cell - Google Patents
Support element and secondary cell Download PDFInfo
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- CN207690876U CN207690876U CN201820057324.2U CN201820057324U CN207690876U CN 207690876 U CN207690876 U CN 207690876U CN 201820057324 U CN201820057324 U CN 201820057324U CN 207690876 U CN207690876 U CN 207690876U
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- support element
- lug
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- secondary cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
This application involves energy storage device technical field more particularly to a kind of support elements and secondary cell.Support element includes：First part, the first part are located at the end of the support element；Second part is connected with the first part；Part III is connected to side of the second part far from the first part；It is protruded along short transverse relative to the second part at the edge of the first part；The Part III is protruded relative to the second part along the short transverse and identical as the protrusion direction at the edge of the first part.Support element provided herein, it is provided with second part and first part, the edge of first part is protruded relative to second part to be arranged, in this way, it is centrally formed depressed area in first part, pole or connector can be at least partially arranged in the depressed area, to reduce the whole size in secondary cell short transverse of pole, connector and support element, be conducive to the raising of secondary cell energy density.
Description
Technical field
This application involves energy storage device technical field more particularly to a kind of support elements and secondary cell.
Background technology
Secondary cell is widely used in mobile phone, laptop due to energy density height, advantages of environment protection
Equal electronic devices.In recent years, for response environment problem, gas price problem and energy stores problem, secondary cell is answered
With Quick Extended to hybrid electric vehicle, electric vehicle and energy storage system.It is existing with the development of electric vehicle
The energy density of secondary cell cannot be satisfied requirement.
When electrode assembly and head cover assemble, lug is stretched out from electrode assembly to be connected with connector, and connector is again and pole
Connection, makes the electric current in electrode assembly be drawn out on the positive terminal and negative terminal of secondary cell.In order to avoid short circuit occurs, usually
Insulating part is set between electrode assembly and connector.Existing insulating part is usually plate-like structure, is installed in insulating part
When secondary cell, pole and connector are set to the top of support element, need to increase in the short transverse of secondary cell in this way
The thickness of connector and support element increases the height dimension of secondary cell, influences the energy density of secondary cell.
Utility model content
This application provides a kind of support element and secondary cells, can solve the above problems.
The first aspect of the application provides a kind of support element, including：
First part, the first part are located at the end of the support element；
Second part is connected with the first part；
Part III is connected to side of the second part far from the first part；
It is protruded along short transverse relative to the second part at the edge of the first part；The Part III relative to
The second part protrudes and identical as the protrusion direction at the edge of the first part along the short transverse.
Optionally, the thickness at the edge of the first part is more than the thickness of the second part.
Optionally, the support element is in strip structure, in at least side of the support element in the width direction, described second
Part is recessed relative to the first part and the Part III.
Optionally, the second part is along two sides first part of the width direction and the third portion
Divide and sets to the concave.
Optionally, along the short transverse, the second part includes top surface, the bottom surface that is oppositely arranged with the top surface with
And the side of the connection top surface and the bottom surface, the top surface, the bottom surface are connected smoothly with the side.
Optionally, the junction of the Part III and the second part is equipped with notch.
Optionally, the notch is arc incision.
The second aspect of the application provides a kind of secondary cell, including：
Pole；
Electrode assembly, including ontology and the lug that extends from the ontology；
Support element, the support element be support element described in any one of the above embodiments, the support element be set to the ontology with
Between the pole；
In one side of the support element far from the ontology, the edge of the first part and the Part III are opposite
It is protruded in the second part；
The pole is located at the surface of the first part, the lug around the second part and with the pole
Electrical connection.
Optionally, the second part two sides first part in the width direction and the Part III are equal
It sets to the concave；The lug is at least partly bonded with the side of the second part.
Optionally, connector is provided between the support element and the pole, the connector includes and the pole
The pole interconnecting piece of connection and the lug interconnecting piece being connect with the lug, the pole interconnecting piece are set to described first
Point；The lug is at least partially arranged between the lug interconnecting piece and the support element.
Optionally, the first part further includes depressed area, and the depressed area is set to the separate described of the support element
The side of ontology, and the second part is recessed along the short transverse；The pole interconnecting piece is set to the depressed area.
Optionally, in the support element close to the one side of the ontology, the edge of the first part and the third portion
Divide and is protruded both with respect to the second part.
Technical solution provided by the present application can reach following advantageous effect：
Support element provided herein is provided with second part and first part, and the edge of first part is relative to
The protrusion setting of two parts, in this way, in the depressed area that is centrally formed of first part, pole or connector can be at least partly arranged
In in the depressed area, to reduce the whole size in secondary cell short transverse of pole, connector and support element, favorably
In the raising of secondary cell energy density；And Part III also protrudes setting relative to second part, to make second part shape
At sunk structure, for accommodating lug, and then the energy density of secondary cell is further increased.
It should be understood that above general description and following detailed description is merely exemplary, this can not be limited
Application.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of specific embodiment of secondary cell provided herein；
Fig. 2 is a kind of explosive view of specific embodiment of secondary cell provided herein；
Fig. 3 is an a kind of sectional view of specific embodiment of secondary cell provided herein；
Fig. 4 is the partial view of Fig. 3；
Fig. 5 is a kind of another sectional view of specific embodiment of secondary cell provided herein；
Fig. 6 is the partial view of Fig. 5；
Fig. 7 is the structural schematic diagram of a kind of specific embodiment of connector in secondary cell provided herein；
Fig. 8 is the structural schematic diagram of another specific embodiment of connector in secondary cell provided herein；
Fig. 9 is a kind of structural schematic diagram of specific embodiment of support element provided herein；
Figure 10 is the structural schematic diagram of another specific embodiment of support element provided herein；
Figure 11 is the sectional view of support element shown in Figure 10；
Figure 12 is the vertical view of support element shown in Figure 10；
Figure 13 is the upward view of support element shown in Figure 10；
Figure 14 is the structural schematic diagram of a kind of specific embodiment of electrode assembly in secondary cell provided herein.
Reference numeral：
100- head covers；
110- explosionproof holes；
120- liquid injection holes；
200- shells；
The first poles of 300-；
The second poles of 400-；
The first connectors of 500-；
510- pole interconnecting pieces；
520- lug interconnecting pieces；
530- transition connection portions；
The second connectors of 600-；
640- fuse part；
700- electrode assemblies；
710- ontologies；
The first pole pieces of 711-；
The second pole pieces of 712-；
713- diaphragms；
The first lugs of 720-；
721- ontology interconnecting pieces；
722- bending parts；
723- extensions；
The second lugs of 730-；
740- winds initial layers；
800- support elements；
810- first parts；
811- first edges；
812- second edges；
The depressed areas 813-；
814- protects structure accommodating area；
820- Part III；
The explosion-proof valve openings of 821-；
830- second parts；
840- through-holes；
860- notch；
900- protects structure.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
Specific implementation mode
It is described in further detail below by specific embodiment and in conjunction with attached drawing to the application.Wherein, with Fig. 1 institutes
The placement location of the secondary cell shown is object, and using the short transverse of secondary cell as short transverse Z, with secondary cell
Length direction is length direction X, using the thickness direction of secondary cell as thickness direction Y.
As represented in figures 1 through 14, the embodiment of the present application provides a kind of secondary cell, including pole (300 He of such as the first pole
Second pole 400), electrode assembly 700 and support element 800, electrode assembly 700 includes ontology 710 and extends from ontology 710
Lug (such as the first lug 720 and the second lug 730)；Support element 800 is set between ontology 710 and pole.
Specifically, as described and depicted in figs. 9-13, support element 800 includes first part 810, second part 830 and Part III
820, first part 810 is located at the end of support element 800；Second part 830 is connected with first part 810；Part III 820
It is connected to side of the second part 830 far from first part 810.Wherein, the edge of first part 810 is relative to second part
830 protrude along above-mentioned short transverse Z (i.e. the thickness direction of support element 800)；Part III 820 is relative to 830 edge of second part
Above-mentioned short transverse Z protrusion and identical as the protrusion direction at the edge of first part 810.When support element 800 be installed on it is secondary
When battery, in one side of the support element 800 far from ontology 710, the edge and Part III 820 of first part 810 are both with respect to
It protrudes two parts 830；Pole is located at the surface of first part 810, and lug is electrically connected around second part 830 and with pole
(be directly connected to or be indirectly connected with).
Above-mentioned support element 800 is provided with second part 830 and first part 810, and the edge of first part 810 is relative to
The protrusion setting of two parts 830, in this way, in one side of the support element 800 far from ontology 710, first part 810 is centrally formed recess
Area 813, pole, connector can be at least partially arranged in the depressed area 813, to reduce pole, connector and support
The whole size in secondary cell short transverse of part 800, is conducive to the raising of secondary cell energy density；And Part III
820 also protrude setting relative to second part 830, to make second part 830 form sunk structure, for accommodating lug, into
And further increase the energy density of secondary cell；Meanwhile lug surrounds second part 830, makes lug along second part 830
It regularly bends, therefore, support element 800 plays the role of shaping to lug, lug bending can be avoided to occur in the process superfluous
It is remaining to cause 700 internal short-circuit of electrode assembly, and then improve the safety of secondary cell.
In a kind of embodiment, connector is provided between support element 800 and pole, and (such as the first connector 500 and second connects
Fitting 600), connector includes the pole interconnecting piece 510 being connect with pole and the lug interconnecting piece 520 being connect with lug, also
It is to say, lug is connect by connector with pole, and pole interconnecting piece 510 is set to first part 810, and pole is connected to connector
One side far from ontology 710；Lug part is set between lug interconnecting piece 520 and support element 800,510 He of pole interconnecting piece
Lug interconnecting piece 520 is arranged along above-mentioned length direction X, at this point, pole interconnecting piece 510 is placed in depressed area 813, passes through increase
Connector makes pole be connected to connector with electrode assembly 700, increases the reliability that pole is connect with lug, and make
The connection of the two is more convenient；Meanwhile lug is set between lug interconnecting piece 520 and support element 800, can by connector with
Support element 800 further compresses lug, and position-limiting action is played to lug, to which the connection for improving lug and connector is reliable
Property.
As shown in Figs. 1-3, secondary cell further includes shell 200 and head cover 100, and head cover 100 is covered on the upper of shell 200
Side, electrode assembly 700 are contained in shell 200.As Figure 2-3, head cover 100 is provided with explosionproof hole 110 and liquid injection hole 120,
Correspondingly, support element 800 is additionally provided with explosion-proof valve opening 821 and through-hole 840, and explosion-proof valve opening 821 can be set to Part III
820, explosion-proof valve opening 821 is opposite with explosionproof hole 110, and through-hole 840 and liquid injection hole 120 are opposite.In secondary cell, above-mentioned pole, company
There are two fitting and lug are respectively provided with, two poles are respectively the first pole 300 and the second pole 400；Two connectors point
It Wei not the first connector 500 and the second connector 600；Two lugs are respectively the first lug 720 and the second lug 730, and first
Lug 720 is connect by the first connector 500 with the first pole 300, and the second lug 730 passes through the second connector 600 and second
Pole 400 connects.Correspondingly, there are two the first part 810 of support element 800 and second part 830 are respectively provided with, i.e. Part III
820 are both provided with first part 810 and second part 830 along the both sides of above-mentioned length direction X, so that the first lug 720 and
Two lugs 730 bypass two second parts 830 respectively, and the first pole 300 and the second pole 400 are respectively arranged at two first
Divide 810 top.
Specifically, above-mentioned ontology 710 is by the first pole piece 711, the second pole piece 712 and positioned at the first pole piece 711 and the
713 co-wound formation of diaphragm between two pole pieces 712, as shown in Fig. 5, Figure 14, the first lug 720 is from 711 edge of the first pole piece
The side of short transverse Z is extended, and the second lug 730 extends from the second pole piece 712 along the side of short transverse Z, each to wind
In layer, the first lug 720 that the first pole piece 711 extends is stacked, 730 layers of the second lug that the second pole piece 712 extends
Folded setting.Wherein, it is the pole piece that ontology 710 is located at innermost circle that ontology 710, which has winding initial layers 740, winding initial layers 740,
Wind initiating terminal part, winding initial layers 740 can be the winding initiating terminal part of the first pole piece 711, the first lug 720 and the
Two lugs 730 are respectively positioned on the same side of 740 through-thickness Y of winding initial layers.
Optionally, lug extends from winding initial layers 740 along the side of above-mentioned thickness direction Y, that is to say, that at one
In winding layer, only extend a lug, each first lug 720 and each second lug 730 are respectively positioned on 710 through-thickness of ontology
The side of Y, to reduce size of the lug along above-mentioned thickness direction Y, in this way, positioned at the lug of innermost layer and positioned at outermost pole
Ear reduces along the span of above-mentioned thickness direction Y, and during lug bending, end dislocation of the lug far from ontology 710 reduces,
It is easy to connect with connector；And the development length of lug entirety can be shortened, it reduces lug and occurs close to one end of ontology 710
The risk of redundancy.In order to ensure the area of passage of lug, in a lug, the ratio of the width and lug thickness of lug is selected as
100~5000, i.e. lug is arranged wider, increases the area of passage of lug with this.Wherein, the width of above-mentioned lug refers to lug
Refer to lug in unfolded state along above-mentioned thickness direction Y along the size of above-mentioned length direction X, the thickness of lug in unfolded state
Size.
The structure of first lug 720 and the second lug 730 can be identical, is illustrated by taking the first lug 720 as an example below.
As seen in figs. 5-6, the first lug 720 includes the ontology interconnecting piece 721 being connect with ontology 710, the extension being connect with connector
723 and the bending part 722 that is connected between ontology interconnecting piece 721 and extension 723, extension 723 is along above-mentioned thickness direction Y
Extend, bending part 722 is bent relative to extension 723.Using this structure, keep the first lug 720 as regularly curved as possible
Folding, improves the safety of secondary cell.
It is the side where lug, i.e. edge that ontology 710 has the first side and the second side, the first side along above-mentioned thickness direction Y
Thickness direction Y, to wind initial layers 740 as boundary, side that ontology 710 extends the first lug 720 and the second lug 730 is the
Side, the other side are the second side, i.e., the second side is that the side of lug is not arranged, and ontology interconnecting piece 721 can be along above-mentioned thickness side
Extend to direction of the Y-direction far from the first side, but this can increase the length of the first lug 720 extension.The implementation of the application
In example, bending part 722 is located at the surface of ontology interconnecting piece 721, i.e., ontology interconnecting piece 721 relative to ontology 710 to separate the
The direction of two sides extends, that is to say, that first to ontology 710, the outside far from the second side extends the first lug 720, forms ontology and connects
Then socket part 721 is bent to form bending part 722 and extension 723, i.e. ontology interconnecting piece 721 relative to ontology interconnecting piece 721 again
Bending part 722 is respectively positioned on along the side of the close the second side of above-mentioned thickness direction Y with extension 723, it is clear that this structure, contracting
Short the length of first lug 720 (length refers to the size that the first lug 720 extends along direction in unfolded state) reduces the
The redundancy of one lug 720 can preferably improve secondary safety.
It is to be appreciated that lug compares concentration in bending place stress, in order to alleviate the stress that bending generates, ontology interconnecting piece
721 with the junction of bending part 722, the equal arc-shaped transition in junction of bending part 722 and extension 723, with prevent lug due to
Bending produces fracture, and improves the reliability of secondary cell.
Above-mentioned electrode assembly 700 can be provided only with one, can also be arranged there are two, in setting there are two electrode assembly
When 700, two 700 through-thickness Y of electrode assembly are arranged side by side, in a kind of embodiment, the first side of an ontology 710 and another
The second side of one ontology 710 is adjacent, and two ontology interconnecting pieces 721 are layered on top of each other, and two extensions 723 are layered on top of each other, secondary
Battery is needed on short transverse Z corresponding to the thickness of two ontology interconnecting pieces 721 of offer and the thickness of two extensions 723
Space is unfavorable for improving the energy density of secondary cell.In another embodiment of the application, as shown in Fig. 2, Fig. 5, Fig. 6, two
The second side of a ontology 710 is disposed adjacent, in this way, two the first lugs 720 are non-interference, respectively around 500 edge of the first connector
The both sides bending of thickness direction Y extends, and at least two ontology interconnecting pieces 721 will not be laminated, and this setup, secondary cell exists
The thickness that an ontology interconnecting piece 721 is considerably reduced on short transverse Z, to reduce secondary cell short transverse Z ruler
It is very little, improve the energy density of secondary cell.Preferably, two extensions 723 extend towards, and spaced therebetween,
Can two extensions 723 be located at the first side of the ontology 710 respectively connected, in this way, two extensions 723 will not
Stacking, in above-mentioned short transverse, therefore the thickness that can save an extension 723 inside secondary cell again further subtracts
Small size of the secondary cell in above-mentioned short transverse Z.
It, can in order to quickly disconnect being electrically connected between pole and electrode assembly 700 when secondary cell overcharges generation short circuit
Fuse part 640 to be arranged on connector, as shown in figure 8, fuse part 640 is arranged on the second connector 600, when secondary cell is sent out
After raw short circuit, second connector 600 disconnects at fuse part 640, and pole interconnecting piece 510 and lug interconnecting piece 520 is made to disconnect, from
And it is disconnected the status of electrically connecting of the second pole 400 and the second lug 730.Wherein, fuse part 640 can be by connecting in transition
Through-hole is arranged in portion 530 to be formed, so that the area of passage of fuse part 640 is less than the overcurrent in other regions on the second connector 600
Area.It is worth noting that, fuse part 640 can also be arranged in the first connector 500.
When being provided with fuse part 640 on connector, secondary cell further includes protection structure 900, as shown in Fig. 2, protection
Structure 900 can be plastic parts, be coated on the periphery of fuse part 640, after fuse part 640 fuses, due to there is protection structure 900
Protection, fuse part 640 do not fall out, and the first pole piece 711 is caused to prevent fuse part 640 from falling in electrode assembly 700
Therefore the safety of secondary cell is further improved with the short circuit of the second pole piece 712.
When connector (the first connector 500 or the second connector 600) is provided with fuse part 640, support element 800 is also
It is provided with protection structure accommodating area 814, protection structure accommodating area 814 can be groove or through-hole, protection structure accommodating area
814 can be set to depressed area 813, to reduce connector with support element 800 in the size of above-mentioned short transverse Z, improve secondary electricity
The energy density in pond.
The slot bottom of above-mentioned depressed area 813 can be coplanar with second part 830, it is preferable that the slot bottom of depressed area 813 compared with
One side of the second part 830 far from ontology 710 is closer to ontology 710, that is to say, that depressed area 813 is compared with second part 830 along upper
It is recessed to state short transverse Z, pole interconnecting piece 510 is set to depressed area 813, and this mode can further decrease pole, connection
Therefore part and the whole size on above-mentioned short transverse Z of support element 800 preferably improve the energy density of secondary cell.
In the edge of first part 810, can whole edges protrude from second part 830, can also only part edge
Second part 830 is protruded from, as shown in figs9-12, the edge of first part 810 includes the first edge 811 being connected with each other and the
Two edges 812, first edge 811 are arranged along above-mentioned thickness direction Y, and second edge 812 is arranged along above-mentioned length direction X, and first
Edge 811 and second edge 812 protrude second part 830, it should be noted that there are one second edge 812 can be arranged
(as shown in Figure 9) can also be arranged there are two (as shown in Figure 10).
Similarly, in side of the support element 800 far from ontology 710, Part III 820 only can protrude from second in subregion
Part 830 can also all protrude from second part 830, can when Part III 820 all protrudes from second part 830
Preferably improve the rigidity of support element 800.
As above-mentioned analysis, the first pole 300 and the second pole 400 are located at the both ends of support element 800, therefore, branch
Support member 800 is bigger along the span of above-mentioned length direction X, and second part 830 is compared to first part 810 and Part III
820 recess settings, can cause the insufficient rigidity of support element 800, be readily bent.In order to solve this problem, the reality of the application
It applies in example, the thickness at the edge (such as first edge 811 and second edge 812) of first part 810 is more than the thickness of second part 830
Degree, it is possible to understand that the edge on ground, first part 810 is the part in the edge of support element 800, therefore, by 810 side of first part
The thickness of edge is arranged larger, can increase the rigidity of support element 800, to improve the bending resistance of support element 800.
Further, in support element 800 close to the one side of ontology 710, the edge and Part III 820 of first part 810
It is protruded both with respect to second part 830, as shown in figs. 9-10, this structure can preferably improve the rigidity of support element 800,
Increase the support force of support element 800；And this structure, when head cover 100 and shell 200 are installed, first part 810, third portion
Divide the regions of 820 protrusion second parts 830 to be bonded with ontology 710, the extruding between support element 800 and ontology 710 can be controlled
Power prevents lug by excessive compression, reduces lug and be pressed into the risk that ontology 710 causes short circuit；Second part 830 and sheet simultaneously
Interval can be formed between body 710, which makes lug energy in the interval for housing the part that lug is connect with ontology 710
It is enough regularly to bend as far as possible, to further decrease the risk that short circuit occurs in electrode assembly 700, improve the peace of secondary cell
Quan Xing.Certainly, in support element 800 close to the one side of ontology 710, can only first part 810 edge or Part III 820
Protrude from second part 830.
It is to be appreciated that support element 800 may be plane close to the one side of ontology 710, to increase support element 800 and this
The contact area of body 710, pressure of the uniform support part 800 to ontology 710 everywhere prevent ontology 710 due to the pressure mistake that is subject to
The edge of the first pole piece 711 and the second pole piece 712 is caused to bend in concentrating.
Along above-mentioned short transverse Z, second part 830 includes top surface, the bottom surface that is oppositely arranged with top surface and connect top surface
With the side of bottom surface, top surface, bottom surface are connected smoothly with side, such as top surface and side, the equal arc transition in bottom surface and side,
Lug extends to top surface along bottom surface, side successively, and this connection type seamlessly transitted can avoid lug around second part 830
When generate wedge angle, or even fracture.
In a kind of embodiment, in support element 800 along the side of above-mentioned thickness direction Y, second part 830 protrudes first part
810, that is to say, that first part 810 is protruded in the side of second part 830, as shown in figure 9, using this structure, when lug
When length is longer, so that lug is protruded the side of first part 810 along above-mentioned thickness direction Y around second part 830, increase pole
The path length of ear bending, it is too long to alleviate lug redundancy, and lug redundancy is avoided to cause lug and the first pole piece 711 as far as possible
Or second pole piece 712 contact caused short circuit, improve the safety of secondary cell；When the length of lug is shorter, can make
Lug ensures lug along another side of above-mentioned thickness direction Y around second part 830 to shorten the bending path of lug
With the connection of connector.
In another embodiment, along above-mentioned thickness direction Y, the size of first part 810 and Part III 820 is all higher than
The size of two parts 830, the space around the home of lug is reserved with the side for second part 830.Specifically, support element 800 is in item
Shape structure, in support element 800 along at least side of above-mentioned thickness direction Y (i.e. the width direction of support element 800), second part
830 is recessed relative to first part 810 and Part III 820, i.e., the side of second part 830 is relative to first part 810,
Three parts 820 recess setting, lug when around the side of second part 830, can be contained in first part 810, side and
It is whole along above-mentioned thickness direction Y to reduce lug and support element 800 in the sunk area that Part III 820 surrounds
Size can improve the energy density of secondary cell.
Preferably, as shown in Figure 10, second part 830 is equal compared with first part 810 along two sides of above-mentioned thickness direction Y
Set to the concave, lug is at least partly bonded with the side of second part 830, when being provided with bending part 722, bending part 722 with
The side of second part 830 is bonded, this mode, especially in secondary cell setting there are two when electrode assembly 700, two electrodes
Two the first lugs 720 of component 700 can extend to support element 800 rotating around two opposite sides of second part 830
Upper surface, to further increase the energy density of secondary cell.
Along above-mentioned short transverse Z, when second part 830 is protruded in 820 two sides of Part III, due to second part 830
Relatively thin, Part III 820 is thicker, therefore easily causes tearing in the junction of second part 830 and Part III 820, to understand
Notch 860 is arranged in the junction of second part 830 and Part III 820 in the certainly problem, the application, can be in Part III
820 are both provided with notch 860 along the both sides of above-mentioned length direction X and along the both sides of above-mentioned thickness direction Y.
Further, notch 860 can be arc incision, be connected with preferably alleviating second part 830 and Part III 820
The stress concentration for meeting place prevents from being broken at this.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (12)
1. a kind of support element, which is characterized in that including：
First part, the first part are located at the end of the support element；
Second part is connected with the first part；
Part III is connected to side of the second part far from the first part；
It is protruded along short transverse relative to the second part at the edge of the first part；The Part III is relative to described
Second part protrudes and identical as the protrusion direction at the edge of the first part along the short transverse.
2. support element according to claim 1, which is characterized in that the thickness at the edge of the first part is more than described the
The thickness of two parts.
3. support element according to claim 1, which is characterized in that the support element is in strip structure, in the support element
At least side in the width direction, the second part are recessed relative to the first part and the Part III.
4. support element according to claim 3, which is characterized in that the second part is along two sides of the width direction
The face first part and the Part III set to the concave.
5. support element according to claim 1, which is characterized in that along the short transverse, the second part includes top
Face, the bottom surface being oppositely arranged with the top surface and the side for connecting the top surface and the bottom surface, the top surface, the bottom surface
It is connected smoothly with the side.
6. according to claim 1-5 any one of them support elements, which is characterized in that the Part III and the second part
Junction be equipped with notch.
7. support element according to claim 6, which is characterized in that the notch is arc incision.
8. a kind of secondary cell, which is characterized in that including：
Pole；
Electrode assembly, including ontology and the lug that extends from the ontology；
Support element, the support element are claim 1-7 any one of them support elements, and the support element is set to the ontology
Between the pole；
In one side of the support element far from the ontology, the edge of the first part and the Part III are both with respect to institute
State second part protrusion；
The pole is located at the surface of the first part, and the lug is electrically connected around the second part and with the pole
It connects.
9. secondary cell according to claim 8, which is characterized in that two sides of the second part in the width direction
The first part and the Part III set to the concave；The lug is at least partly pasted with the side of the second part
It closes.
10. secondary cell according to claim 8, which is characterized in that be provided between the support element and the pole
Connector, the connector include the pole interconnecting piece being connect with the pole and the lug interconnecting piece being connect with the lug,
The pole interconnecting piece is set to the first part；The lug be at least partially arranged at the lug interconnecting piece with it is described
Between support element.
11. secondary cell according to claim 10, which is characterized in that the first part further includes depressed area, described
Depressed area is set to the side far from the ontology of the support element, and the second part is recessed along the short transverse
If；The pole interconnecting piece is set to the depressed area.
12. secondary cell according to claim 8, which is characterized in that in the support element close to the one side of the ontology,
The edge of the first part and the Part III are protruded both with respect to the second part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820057324.2U CN207690876U (en) | 2018-01-12 | 2018-01-12 | Support element and secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820057324.2U CN207690876U (en) | 2018-01-12 | 2018-01-12 | Support element and secondary cell |
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| Publication Number | Publication Date |
|---|---|
| CN207690876U true CN207690876U (en) | 2018-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820057324.2U Active CN207690876U (en) | 2018-01-12 | 2018-01-12 | Support element and secondary cell |
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| Country | Link |
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| CN (1) | CN207690876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106304A (en) * | 2018-10-30 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Secondary battery |
-
2018
- 2018-01-12 CN CN201820057324.2U patent/CN207690876U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106304A (en) * | 2018-10-30 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN111106304B (en) * | 2018-10-30 | 2021-02-26 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| EP3723154A4 (en) * | 2018-10-30 | 2021-04-07 | Contemporary Amperex Technology Co., Limited | Top pressing plate, secondary battery and manufacturing method for secondary battery |
| CN111106304B9 (en) * | 2018-10-30 | 2021-06-11 | 宁德时代新能源科技股份有限公司 | Secondary battery |
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