CN209217105U - Afflux part and secondary cell - Google Patents
Afflux part and secondary cell Download PDFInfo
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- CN209217105U CN209217105U CN201822274923.2U CN201822274923U CN209217105U CN 209217105 U CN209217105 U CN 209217105U CN 201822274923 U CN201822274923 U CN 201822274923U CN 209217105 U CN209217105 U CN 209217105U
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- flow collection
- collection sheet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a kind of afflux part and secondary cells.Afflux part, for being electrically connected the pole and tab of secondary cell comprising: the firstth sheet material；Second sheet material intersects setting with the first sheet material, and the second sheet material with pole for being electrically connected；Afflux unit, afflux unit and the second sheet material are respectively arranged at the first sheet material along itself opposite two sides in first thickness direction, intersect with the second thickness direction of the second sheet material itself in first thickness direction, afflux unit includes the first flow collection sheet, first flow collection sheet with tab for being electrically connected, and first flow collection sheet there is the first connecting pin for connect with the first sheet material, the first connecting pin is along the first direction extension perpendicular with first thickness direction and second thickness direction.The afflux part of the utility model embodiment can guarantee reliable and stable with tab connection status, improve the reliability and safety of secondary cell.
Description
Technical field
The utility model relates to battery technology fields, more particularly to a kind of afflux part and secondary cell.
Background technique
With the development of science and technology, secondary cell is in portable electrics such as mobile phone, DV and laptop computers
It is widely used in sub- equipment, and big in the electric vehicles such as electric car, electric bicycle and energy storage facility etc.
It has a wide range of applications in terms of medium-sized electrical equipment, becomes the weight for solving the global problems such as energy crisis and environmental pollution
Want technological means.In the prior art, secondary cell includes the afflux component for having electrode assembly and connecting with electrode assembly.Electricity
The tab that pole component has end face and extends from end face, since preset clearance is smaller between afflux component and end face,
When causing to be subjected to afflux component and tab using welding equipment, operation difficulty is big, be easy to cause afflux component and
There is the case where rosin joint in tab.
Utility model content
The utility model embodiment provides a kind of afflux part and secondary cell.Afflux part can guarantee to connect shape with tab
State is reliable and stable, improves the reliability and safety of secondary cell.
On the one hand, the utility model embodiment proposes a kind of afflux part, for being electrically connected pole and the pole of secondary cell
Ear, comprising: the first sheet material；Second sheet material intersects setting with the first sheet material, and the second sheet material with pole for being electrically connected；Afflux list
Member, afflux unit and the second sheet material are respectively arranged at the first sheet material along itself opposite two sides in first thickness direction, first thickness
Direction is intersected with the second thickness direction of the second sheet material itself, afflux unit include the first flow collection sheet, the first flow collection sheet be used for
Tab electrical connection, and the first flow collection sheet has the first connecting pin connecting with the first sheet material, the first connecting pin edge and first thickness
The perpendicular first direction in direction and second thickness direction extends.
According to the one aspect of the utility model embodiment, afflux unit further includes the second flow collection sheet, the first flow collection sheet and
Second flow collection sheet is arranged along second thickness direction interval, and the second flow collection sheet with tab for being electrically connected, and the second flow collection sheet has
The second connection end connecting with the first sheet material, second connection end extend in a first direction
According to the one aspect of the utility model embodiment, the first flow collection sheet and the second flow collection sheet are along first thickness direction
Extend to the side of the first sheet material, the first flow collection sheet and the second flow collection sheet can be turned down relative to first thickness direction.
According to the one aspect of the utility model embodiment, the first flow collection sheet is relative to the second flow collection sheet closer to second
Material setting.
According to the one aspect of the utility model embodiment, the first sheet material includes being connected with the second sheet material and along second
The main part and be connected to the first epitaxy part of main part that thickness direction extends, the first epitaxy part is along first direction to main part
Outside extend, the first flow collection sheet and the second flow collection sheet at least one be connected to the first epitaxy part.
According to the one aspect of the utility model embodiment, the first flow collection sheet and the second flow collection sheet are all connected to the first extension
Portion and the first flow collection sheet and the second flow collection sheet are along the least partially overlapped setting in second thickness direction.
According to the one aspect of the utility model embodiment, the first sheet material has empty avoiding notch, and empty avoiding notch is along first party
To extension, the first flow collection sheet has the first joint face, and the first joint face is located at the first flow collection sheet close to the side of empty avoiding notch,
Tab can pass through empty avoiding notch and be connected with the first joint face.
According to the one aspect of the utility model embodiment, the first flow collection sheet and the second flow collection sheet are all set in the first extension
In portion, main part has the extension extended in a first direction, and extension is set with the first epitaxy part along second thickness direction interval
It sets to form empty avoiding notch.
According to the one aspect of the utility model embodiment, empty avoiding notch extends in a first direction and crosses the first afflux
Piece.
According to the one aspect of the utility model embodiment, in a first direction, far from the first epitaxy part on main part
Edge exceeds the second sheet material.
According to the one aspect of the utility model embodiment, on second thickness direction, at least one of the first epitaxy part
Divide and extension overlaps.
According to the one aspect of the utility model embodiment, the second flow collection sheet has the second joint face, the first flow collection sheet back
It is the first joint face to the surface of the second flow collection sheet, the second flow collection sheet is the second joint face backwards to the surface of the first flow collection sheet.
According to the one aspect of the utility model embodiment, the first sheet material further includes the second extension for being connected to main part
Portion, the first epitaxy part and the second epitaxy part are respectively arranged at the main part two sides opposite along first direction, the connection of the first flow collection sheet
In the first epitaxy part along the one end in second thickness direction, the second flow collection sheet is connected to the second epitaxy part along the one of second thickness direction
End.
According to the one aspect of the utility model embodiment, the first sheet material has the through-hole extended along first thickness direction,
First flow collection sheet has the first joint face, and the first flow collection sheet is the first joint face towards the surface of through-hole, and tab can pass through logical
Hole is connected with the first joint face.
The pole of the tab of electrode assembly and cap assembly can be electrically connected according to the afflux part of the utility model embodiment
It connects.Afflux part includes the first flow collection sheet for being electrically connected with tab.First flow collection sheet can be connected and fixed with corresponding tab.
The afflux part of the present embodiment is connected and fixed by the first flow collection sheet being set on the first sheet material with tab.In the collection of the present embodiment
It flows under part use state, the first sheet material is close to electrode assembly, and the first flow collection sheet and electrode assembly distance are farther out, so as to pre-
It reserves and allows bit space, convenient for being subjected to the first flow collection sheet with tab by using welding equipment, to be effectively reduced
Operation difficulty is welded, welding quality is improved, and then is conducive to promote the stability that the first flow collection sheet is connect with tab, so that each other
It is not susceptible to separate, guarantees the stability and safety of secondary cell use process.
On the other hand, a kind of secondary cell is provided according to the utility model embodiment, comprising:
Shell, including having the receiving hole of opening；Cap assembly, cap assembly are hermetically connected with the shell with lid make and break mouth；
Electrode assembly is set in receiving hole, and electrode assembly includes more than two electrode units, electrode unit include ontology and with
The tab that ontology is connected, more than two electrode units are stacked along the extending direction of receiving hole；Extending direction and second
Thickness direction is parallel, and such as the afflux part of above-described embodiment, the first flow collection sheet is electrically connected with tab.
Detailed description of the invention
The feature, advantage and technical effect of the utility model exemplary embodiment are described below by reference to attached drawing.
Fig. 1 is the decomposition texture schematic diagram of the secondary cell of an embodiment of the present invention；
Fig. 2 is the partial structural diagram of the secondary cell of an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the afflux part of an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the afflux part of another embodiment of the utility model；
Fig. 5 is the structural schematic diagram of the afflux part of another embodiment of the utility model；
Fig. 6 is the structural schematic diagram of the afflux part of another embodiment of the utility model；
Fig. 7 is the structural schematic diagram of the afflux part of another embodiment of the utility model；
Fig. 8 is the structural schematic diagram of the afflux part of the utility model another embodiment.
In the accompanying drawings, the attached drawing is not drawn according to the actual ratio.
Description of symbols:
10, afflux part；
11, the first sheet material；11a, through-hole；11b, empty avoiding notch；111, main part；111a, edge；112, the first extension
Portion；113, extension；114, the second epitaxy part；
12, the second sheet material；12a, boss；
13, the first flow collection sheet；
14, the second flow collection sheet；
15a, the first joint face；15b, the second joint face；
16a, the first connecting pin；16b, second connection end；
20, secondary cell；
21, shell；21a, receiving hole；
22, electrode unit；22a, ontology；22b, tab；
23, cap assembly；23a, pole；
X, first thickness direction；Y, second thickness direction；Z, first direction；W, extending direction.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
The detailed description and the accompanying drawings for illustratively illustrating the principles of the present invention, but cannot be used to limit the model of the utility model
It encloses, i.e., the utility model is not limited to described embodiment.
In the description of the present invention, it should be noted that unless otherwise indicated, the meaning of " plurality " is two or two
More than a；The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" is merely for convenience of retouching
State the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ",
" third " etc. is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art,
Visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
The utility model in order to better understand, below with reference to Fig. 1 to Fig. 8 to the secondary cell of the utility model embodiment
20 and afflux part 10 be described in detail.
The secondary cell 20 of the utility model embodiment includes shell 21, is set in shell 21 referring to figure 1 and figure 2
Electrode assembly and with shell 21 be tightly connected cap assembly 23.
The shell 21 of the present embodiment can be four prisms cylinder shape or other shapes.Shell 21, which has, is used for accommodate electrod group
The receiving hole 21a of part and electrolyte.Receiving hole 21a has opening.Shell 21 can be by such as aluminium, aluminium alloy or plastic or other material
Manufacture.
The electrode assembly of the present embodiment includes the electrode that more than two extending direction W along receiving hole 21a are stacked
Unit 22.The electrode unit 22 of the present embodiment can be by stacking or winding together the first pole piece, the second pole piece and diaphragm
And form the ontology 22a and tab 22b being connected with ontology 22a.Diaphragm is between the first pole piece and the second pole piece
Insulator.The electrode unit 22 of the present embodiment includes one layer of diaphragm, one layer of first pole piece, one layer of diaphragm and one layer of second pole piece.
In the present embodiment, illustratively using the first pole piece as positive plate, the second pole piece is illustrated for negative electrode tab.Similarly, at it
In his embodiment, the first pole piece can also be negative electrode tab, and the second pole piece is positive plate.In addition, positive active material is applied
It overlays on the coating area of positive plate, and negative electrode active material is applied on the coating area of negative electrode tab.Extend from ontology 22a
Multiple uncoated areas are then used as tab 22b.Electrode unit 22 includes two tab 22b, i.e. anode ear and negative electrode lug.Anode ear from
Extend the coating area of positive plate；Negative electrode lug extends from the coating area of negative electrode tab.
The cap assembly 23 of the present embodiment includes lamina tecti and pole 23a.Cap assembly 23 is tightly connected by lamina tecti
In shell 21.Pole 23a is set to lamina tecti and is electrically connected with electrode assembly.
Shown in Figure 3, the utility model embodiment proposes a kind of afflux part 10, for being electrically connected secondary cell 20
The tab 22b of pole 23a and electrode unit 22.Afflux part 10 includes the first sheet material 11, the second sheet material 12 and afflux unit.The
One sheet material 11 and the intersection setting of the second sheet material 12.First sheet material 11 and the second sheet material 12 all have predetermined thickness.First sheet material 11
Intersect along the first thickness direction X of thickness and the second sheet material 12 along the second thickness direction Y of thickness.Afflux unit and
Second sheet material 12 is respectively arranged at the first sheet material 11 two sides opposite along first thickness direction X.First thickness direction X and second
The second thickness direction Y of material 12 itself intersects.Preferably, the second thickness side of first thickness direction X and the second sheet material 12 itself
It is vertical to Y.Afflux unit and the second sheet material 12 extend along first thickness direction X each other, but mutual extending direction is opposite.Collection
Flowing unit includes foldable first flow collection sheet 13.First flow collection sheet 13 with tab 22b for being electrically connected.First flow collection sheet 13 tool
There is the first connecting pin 16a connecting with the first sheet material 11.The edge first connecting pin 16a and first thickness direction X and second thickness side
The first direction Z perpendicular to Y extends.Second sheet material 12 with pole 23a for being electrically connected.In one embodiment, second
Material 12 has boss 12a.Boss 12a extends along second thickness direction Y and far from the first flow collection sheet 13.The boss of second sheet material 12
12a with pole 23a for being electrically connected.
The afflux part 10 of the utility model embodiment can be by the pole of the tab 22b of electrode assembly and cap assembly 23
23a electrical connection.Afflux part 10 includes the first flow collection sheet 13 for being electrically connected with tab 22b.First flow collection sheet 13 can be with phase
The tab 22b answered is connected and fixed.The afflux part of the present embodiment is connected by the first flow collection sheet and tab being set on the first sheet material
Connect fixation.Under the afflux part use state of the present embodiment, the first sheet material is close to electrode assembly, and the first flow collection sheet and electrode group
Part distance allows bit space farther out, so as to reserve, convenient for being carried out the first flow collection sheet and tab by using welding equipment
Welding operation improves welding quality so that welding operation difficulty be effectively reduced, and then is conducive to promote the first flow collection sheet 13 and pole
The stability of ear 22b connection guarantees the stability and safety of 20 use process of secondary cell so that being not susceptible to separate each other
Property.
Referring to fig. 4 to shown in Fig. 8, the afflux part 10 of the utility model embodiment includes foldable second flow collection sheet 14.
Second flow collection sheet 14 is connected to the first sheet material 11.First flow collection sheet 13 and the second flow collection sheet 14 are set along the second thickness direction interval Y
It sets.Second flow collection sheet 14 with tab 22b for being electrically connected.Second flow collection sheet 14 has the second connection connecting with the first sheet material 11
Hold 16b.Second connection end 16b extends along with first thickness direction X and second thickness direction Y perpendicular first direction Z.
The electrode assembly of the present embodiment includes four electrode units 22.It is two groups that four electrode units 22, which are divided to,.Every group of electrode
Two electrode units 22 in unit 22 are electrically connected by respective tab 22b.The respective tab 22b of two arrays of electrodes unit 22 exists
Setting is spaced on the extending direction W of receiving hole 21a, and the two can be aligned along extending direction W and be arranged, it can also be in the second thickness
It is arranged in a staggered manner on degree direction Y.The extending direction W of the present embodiment is identical as second thickness direction Y.The tab of two arrays of electrodes unit 22
22b is electrically connected with the first flow collection sheet 13 of afflux part 10 and the second flow collection sheet 14 respectively.It is readily appreciated that ground, every group of electrode unit 22
Quantity be not limited to two, be also possible to one or three or more.Optionally, tab 22b and the first flow collection sheet 13 or
Tab 22b can be welded to connect with the second flow collection sheet 14 by way of ultrasonic bonding.
First flow collection sheet 13 and the second flow collection sheet 14 of the present embodiment are along first thickness direction X to the one of the first sheet material 11
The second thickness direction Y phase of the thickness direction and the second sheet material 12 of side extension namely the first flow collection sheet 13 and the second flow collection sheet 14
Together.First flow collection sheet 13 and the second flow collection sheet 14 are located at the same side of the first sheet material 11.First flow collection sheet 13 and the second flow collection sheet
It is spaced a predetermined distance on the Y of second thickness direction between 14, allows bit space to be formed therebetween.In 13 He of the first flow collection sheet
Second flow collection sheet 14 respectively with tab 22b use ultrasonic bonding connection when, convenient for ultrasonic equipment along second thickness direction Y from
The first flow collection sheet 13 or the second flow collection sheet 14 are clamped in the two sides of one flow collection sheet 13 or the second flow collection sheet 14, consequently facilitating carrying out ultrasound
Wave soldering connects operation.In one embodiment, the first flow collection sheet 13 and the second flow collection sheet 14 can be relative to first thickness direction X
Fold.In one example, the thickness direction of the first flow collection sheet 13 after fold and the second flow collection sheet 14 and first thickness direction X
It is identical, thus parallel with the first sheet material 11.Further, the first flow collection sheet 13 and the second flow collection sheet 14 are along second thickness direction
Y is turned down toward each other and can be contacted with the first sheet material 11.It is connect in the first flow collection sheet 13 and the second flow collection sheet 14 with tab 22b
After fixation, the first flow collection sheet 13 and the second flow collection sheet 14 are turned down, reduce space occupancy rate.Simultaneously because the first sheet material 11 and electricity
Pole attached components touch, between the first flow collection sheet 13 and the second flow collection sheet 14 and electrode assembly after fold, therefore the first collection
It can be contacted without with the first sheet material 11 after flow 13 and the fold of the second flow collection sheet 14 and be in contact with electrode assembly, to reduce
A possibility that scratching after first flow collection sheet 13 and the fold of the second flow collection sheet 14 or puncture electrode assembly.In one embodiment,
One flow collection sheet 13 is arranged relative to the second flow collection sheet 14 close to the second sheet material 12.
In one embodiment, the second flow collection sheet 14 has the second joint face 15b.First flow collection sheet 13 is backwards to the second afflux
The surface of piece 14 is the first joint face 15a.Second flow collection sheet 14 is the second joint face 15b backwards to the surface of the first flow collection sheet 13.
Shown in Figure 4, first sheet material 11 of the present embodiment has the through-hole 11a extended along first thickness direction X.First flow collection sheet 13
The first joint face 15a is formed towards the surface of through-hole 11a.The the first joint face 15a and through-hole 11a of first flow collection sheet 13 are along second
Thickness direction Y is disposed adjacent.Tab 22b can pass through through-hole 11a along first thickness direction X and be connected with the first joint face 15a.
Through-hole 11a can be avoided tab 22b and 11 appearance position of the first sheet material is interfered, while be also beneficial to reduce the ruler of the first sheet material 11
It is very little, to be conducive to be promoted the compact overall structure of afflux part 10, space occupancy rate is reduced, while being also beneficial to mitigation first
The weight of sheet material 11, to be conducive to improve the energy density of secondary cell 20.First flow collection sheet 13 of the present embodiment is towards logical
The surface of hole 11a is the first joint face 15a, and the second flow collection sheet 14 is the second joint face 15b backwards to the surface of the second sheet material 12.
Referring to shown in Fig. 5 to Fig. 7, first sheet material 11 of the present embodiment includes being connected and with the second sheet material 12 along second
The main part 111 of thickness direction Y extension and the first epitaxy part 112 for being connected to main part 111.First sheet material 11 passes through main body
Portion 111 is connect with the second sheet material 12, due to being provided with the first epitaxy part 112, does not need that through-hole is arranged on main part 111
11a, to be conducive to improve the conveyance capacity of main part 111.First epitaxy part 112 is along the outer of first direction Z-direction main part 111
Side extends.First flow collection sheet 13 and the second flow collection sheet 14 at least one be connected to the first epitaxy part 112.First collection of the present embodiment
Flow 13 is the first joint face 15a towards the surface of the second sheet material 12 along second thickness direction Y, and the second flow collection sheet 14 is backwards to the
The surface of two sheet materials 12 is the second joint face 15b.In one embodiment, shown in referring to figs. 5 and 6,13 He of the first flow collection sheet
Second flow collection sheet 14 is all set in the first epitaxy part 112.Optionally, the first flow collection sheet 13 and the second flow collection sheet 14 are all connected to
One epitaxy part 112 and the first flow collection sheet 13 and the second flow collection sheet 14 are at least partly overlapped along second thickness direction Y.Preferably,
First flow collection sheet 13 is identical with 14 structure of the second flow collection sheet, and the first flow collection sheet 13 and the second flow collection sheet 14 are along second thickness side
It is aligned and is arranged to Y.In another embodiment, shown in Figure 7, the first flow collection sheet 13 is set to the first epitaxy part 112, and
Two flow collection sheets 14 are set to main part 111.
Referring to shown in Fig. 6 and Fig. 7, first sheet material 11 of the present embodiment has empty avoiding notch 11b.Empty avoiding notch 11b is along
One direction Z extends.The the first joint face 15a and empty avoiding notch 11b of first flow collection sheet 13 are disposed adjacent along second thickness direction Y.
Tab 22b can pass through empty avoiding notch 11b and be connected with the first joint face 15a of the first flow collection sheet 13.Empty avoiding notch 11b can
It avoids appearance position between tab 22b and the first sheet material 11 from interfering situation, while being also beneficial to reduce the size of the first sheet material 11,
To be conducive to promote the compactedness of afflux part 10, space occupancy rate is reduced, is in addition also beneficial to mitigate the weight of the first sheet material 11
Amount, to be conducive to improve the energy density of secondary cell 20.In one embodiment, the first flow collection sheet 13 and the second flow collection sheet
14 are all set on the first epitaxy part 112.Main part 111 has the extension 113 extended along first direction Z.Extension 113 with
First epitaxy part 112 is arranged along the second thickness direction interval Y to form empty avoiding notch 11b.Optionally, clearance structure is along first
The bathtub construction that direction Z extends.In one embodiment, empty avoiding notch 11b extends along first direction Z and crosses the first flow collection sheet
13.The empty avoiding notch 11b length that Z extends in a first direction is greater than the length that the first flow collection sheet 13 extends along first direction Z.This
Sample, when passing through from empty avoiding notch 11b, tab 22b will not be in contact with main part 111 and lead to main part 111 tab 22b
Tab 22b is formed and is squeezed, so that a possibility that tab 22b is deformed by the extruding of main part 111 or is damaged is reduced, while
Tab 22b is reduced dislocation occurs and leads to a possibility that inaccurate, unstable with 13 join domain of the first flow collection sheet.
Referring to fig. 2 to shown in Fig. 7, in the present embodiment, in a first direction on Z, far from the first epitaxy part on main part 111
112 edge 111a exceeds the second sheet material 12.Due to being provided with through-hole 11a, the first epitaxy part 112 on the first sheet material 11 or keeping away
Hollow structure, therefore under the premise of the size of main part 111 itself is restricted, by the first epitaxy part separate on main part 111
112 edge 111a is designed beyond the structure of the second sheet material 12, is conducive to increase the mistake between main part 111 and the second sheet material 12
Flow area, reduce main part 111 and 12 transitional region of the second sheet material because electric current is excessive fuse a possibility that, raising is secondary
The use process safety and stability of battery 20.
Referring to shown in Fig. 6 and Fig. 7, in the present embodiment, on the Y of second thickness direction, at least one of the first epitaxy part 112
Divide and extension 113 overlaps.In this way, can guarantee under the premise of not increasing the first 11 overall dimensions of sheet material first
Empty avoiding notch 11b is designed on sheet material 11, while guaranteeing that main part 111 and the second sheet material 12 connection transition region have bigger mistake
Flow area is conducive to the energy for improving secondary cell 20 on the one hand be conducive to improve the structural compactness of the first sheet material 11
On the other hand density also guarantees there is good conveyance capacity between the first sheet material 11 and the second sheet material 12, promote secondary cell
20 job stabilitys and reliability.
Shown in Figure 8, first sheet material 11 of the utility model embodiment further includes being connected to outside the second of main part 111
Prolong portion 114.First epitaxy part 112 and the second epitaxy part 114 are respectively arranged at the two sides opposite along first direction Z of main part 111.
First flow collection sheet 13 is connected to the first epitaxy part 112 along one end of second thickness direction Y.Second flow collection sheet 14 is connected to outside second
Prolong portion 114 along one end of second thickness direction Y.Due to the respective company with tab 22b of the first flow collection sheet 13 and the second flow collection sheet 14
A large amount of heat can be generated by connecing region, therefore when the first flow collection sheet 13 and the second flow collection sheet 14 are arranged in a staggered manner, advantageously reduce
The heat that one flow collection sheet 13 and the second flow collection sheet 14 are respectively discharged with the join domain of tab 22b gathers and leads to first
A possibility that flow collection sheet 13 and respectively excessively high with the join domain temperature rise of tab 22b the second flow collection sheet 14, guarantees the first flow collection sheet
13 and the second respective connective stability with the join domain of tab 22b of flow collection sheet 14.
The secondary cell 10 of the utility model embodiment include shell 11, the electrode assembly 12 that is set in shell 11 and
The cap assembly 13 being tightly connected with shell 11.More than two electrode units 121 are along shell 11 included by electrode assembly 12
Extending direction W be stacked.When the electrode unit 121 of the present embodiment expands, electrode unit 121 is mainly in receiving hole
It is expanded on the extending direction W of 11a, so that electrode unit 121 can discharge the expansion of the extending direction W along receiving hole 11a
Power, and the expansive force discharged on 10 thickness direction of secondary cell is smaller, so will not the side plate 112 to shell 11 generate
Excessive compression.In this way, assembling is arranged side by side along thickness direction in more than two secondary cells 10 in the present embodiment
When forming battery modules 20, generated main expansion power and thickness direction phase when being expanded due to each secondary cell 10
It hands over, therefore the main expansion power that each secondary cell 10 generates will not accumulate in a thickness direction and form biggish resultant force.?
When fixing the battery modules 20 of the secondary cell including more than two the present embodiment using external fixator, to fixing piece itself
Stiffness and strength require it is lower, thus favorably reduce fixing piece volume or weight, and then be conducive to improve secondary cell and
Battery modules 20 whole energy density and space utilization rate.
Although the present utility model has been described by reference to the preferred embodiments, but in the model for not departing from the utility model
In the case where enclosing, various improvement can be carried out to it and can replace component therein with equivalent, especially, as long as not depositing
In structural conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.The utility model
It is not limited to specific embodiment disclosed herein, but is included all technical solutions falling within the scope of the claims.
Claims (15)
1. a kind of afflux part, for being electrically connected the pole and tab of secondary cell, which is characterized in that the afflux part includes:
First sheet material；
Second sheet material intersects setting with first sheet material, and second sheet material with the pole for being electrically connected；
Afflux unit, the afflux unit and second sheet material are respectively arranged at first sheet material along itself first thickness side
To opposite two sides, the first thickness direction is intersected with the second thickness direction of second sheet material itself, the afflux list
Member includes the first flow collection sheet, and first flow collection sheet with the tab for being electrically connected, and first flow collection sheet has and institute
State the first connecting pin of the first sheet material connection, the first connecting pin edge and the first thickness direction and the second thickness side
Extend to perpendicular first direction.
2. afflux part according to claim 1, which is characterized in that the afflux unit further includes the second flow collection sheet, described
First flow collection sheet and second flow collection sheet are arranged along second thickness direction interval, second flow collection sheet be used for it is described
Tab electrical connection, and second flow collection sheet has the second connection end connecting with first sheet material, the second connection end
Extend along the first direction.
3. afflux part according to claim 2, which is characterized in that first flow collection sheet and the equal edge of the second flow collection sheet
The first thickness direction extends to the side of first sheet material, and first flow collection sheet and second flow collection sheet can
It is turned down relative to the first thickness direction.
4. afflux part according to claim 3, which is characterized in that first flow collection sheet is relative to second flow collection sheet
It is arranged closer to second sheet material.
5. afflux part according to claim 2, which is characterized in that first sheet material includes being connected with second sheet material
It connects and the main part that extends along the second thickness direction and is connected to the first epitaxy part of the main part, described first
Epitaxy part extends along the first direction to the outside of the main part, and first flow collection sheet and second flow collection sheet are at least
One is connected to first epitaxy part.
6. afflux part according to claim 5, which is characterized in that first flow collection sheet and second flow collection sheet connect
Be connected to first epitaxy part and first flow collection sheet and second flow collection sheet along the second thickness direction at least partly
It overlaps.
7. afflux part according to claim 6, which is characterized in that first sheet material has empty avoiding notch, the empty avoiding
Notch extends along the first direction, and first flow collection sheet has the first joint face, and first joint face is positioned at described
First flow collection sheet can pass through the empty avoiding notch and first joint face close to the side of the empty avoiding notch, the tab
It is connected.
8. afflux part according to claim 7, which is characterized in that first flow collection sheet and second flow collection sheet are all provided with
It is placed on first epitaxy part, the main part has the extension extended along the first direction, the extension and institute
The first epitaxy part is stated to be arranged along second thickness direction interval to form the empty avoiding notch.
9. afflux part according to claim 8, which is characterized in that the empty avoiding notch extends and gets over along the first direction
Cross first flow collection sheet.
10. afflux part according to claim 8, which is characterized in that in said first direction, separate on the main part
The edge of first epitaxy part exceeds second sheet material.
11. afflux part according to claim 8, which is characterized in that on the second thickness direction, first extension
Portion is at least partly overlapped with the extension.
12. afflux part according to claim 7, which is characterized in that second flow collection sheet has the second joint face, described
First flow collection sheet is first joint face backwards to the surface of second flow collection sheet, and second flow collection sheet is backwards to described first
The surface of flow collection sheet is second joint face.
13. afflux part according to claim 5, which is characterized in that first sheet material further includes being connected to the main body
Second epitaxy part in portion, first epitaxy part and second epitaxy part are respectively arranged at the main part along the first party
To opposite two sides, first flow collection sheet is connected to first epitaxy part along the one end in the second thickness direction, described
Second flow collection sheet is connected to second epitaxy part along the one end in the second thickness direction.
14. afflux part according to claim 1, which is characterized in that first sheet material has along the first thickness side
To the through-hole of extension, first flow collection sheet has the first joint face, and the surface of the first flow collection sheet towards the through-hole is
First joint face, the tab can pass through the through-hole and be connected with first joint face.
15. a kind of secondary cell characterized by comprising
Shell, including having the receiving hole of opening；
Cap assembly, the cap assembly are connect to cover and close the opening with the housing seal；
Electrode assembly is set in the receiving hole, and the electrode assembly includes more than two electrode units, the electrode list
Member includes ontology and the tab being connected with the ontology, extension of more than two electrode units along the receiving hole
Direction is stacked, and the extending direction is parallel with the second thickness direction；
Such as the described in any item afflux parts of claim 1 to 14, first flow collection sheet is electrically connected with the tab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274923.2U CN209217105U (en) | 2018-12-29 | 2018-12-29 | Afflux part and secondary cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274923.2U CN209217105U (en) | 2018-12-29 | 2018-12-29 | Afflux part and secondary cell |
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| CN209217105U true CN209217105U (en) | 2019-08-06 |
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| CN201822274923.2U Active CN209217105U (en) | 2018-12-29 | 2018-12-29 | Afflux part and secondary cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020133676A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Current collector and secondary battery |
| WO2020134745A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Secondary cell, cell module, and manufacturing method for secondary cell |
| CN111463367A (en) * | 2019-01-22 | 2020-07-28 | 宁德时代新能源科技股份有限公司 | Secondary battery and battery module |
| CN113904037A (en) * | 2021-10-27 | 2022-01-07 | 厦门海辰新能源科技有限公司 | Battery cell and battery pack |
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2018
- 2018-12-29 CN CN201822274923.2U patent/CN209217105U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020133676A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Current collector and secondary battery |
| WO2020134745A1 (en) * | 2018-12-29 | 2020-07-02 | 宁德时代新能源科技股份有限公司 | Secondary cell, cell module, and manufacturing method for secondary cell |
| CN111384349A (en) * | 2018-12-29 | 2020-07-07 | 宁德时代新能源科技股份有限公司 | Current collector and secondary battery |
| US11177539B2 (en) | 2018-12-29 | 2021-11-16 | Contemporary Amperex Technology Co., Limited | Current collector and secondary battery |
| US11335978B2 (en) | 2018-12-29 | 2022-05-17 | Contemporary Amperex Technology Co., Limited | Secondary battery and battery module |
| CN111463367A (en) * | 2019-01-22 | 2020-07-28 | 宁德时代新能源科技股份有限公司 | Secondary battery and battery module |
| CN113904037A (en) * | 2021-10-27 | 2022-01-07 | 厦门海辰新能源科技有限公司 | Battery cell and battery pack |
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