CN209401762U - Secondary cell and battery modules - Google Patents
Secondary cell and battery modules Download PDFInfo
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- CN209401762U CN209401762U CN201920284040.1U CN201920284040U CN209401762U CN 209401762 U CN209401762 U CN 209401762U CN 201920284040 U CN201920284040 U CN 201920284040U CN 209401762 U CN209401762 U CN 209401762U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model provides a kind of secondary cell and battery modules.Secondary cell includes electrode assembly, shell, cap assembly and afflux component.Shell has accommodating chamber, and accommodating chamber has opening along one end of first direction.Electrode assembly is contained in accommodating chamber, and electrode assembly includes multiple electrode units being stacked along first direction.Cap assembly includes lamina tecti and first electrode terminal, and lamina tecti is connected to shell and covers the opening of shell, and first electrode terminal is set to lamina tecti.Afflux component connection electrode component and first electrode terminal, and afflux component includes terminal connecting plate, substrate and elastic plate.Terminal connecting plate is connected to first electrode terminal, and substrate is located at terminal connecting plate along first direction close to the side of electrode assembly, and substrate is connected to electrode assembly, elastic plate connection terminal connecting plate and substrate.Battery modules include secondary cell；Secondary cell is multiple and is arranged successively along the third direction perpendicular to first direction.
Description
Technical field
The utility model relates to field of batteries more particularly to a kind of secondary cell and battery modules.
Background technique
Battery modules generally include multiple secondary cells being arranged successively, and electrode assembly is equipped with inside each secondary cell.
In charge and discharge process, electrode assembly can expand in the orientation of secondary cell, and the electrode of the multiple secondary cell
The expansive force that component generates can be superimposed along orientation and form excessive resultant force；The resultant force squeezes secondary cell, causes
Secondary cell can not work normally, and influence the service life of secondary cell.
Utility model content
In view of the problems in the background art, the purpose of this utility model is to provide a kind of secondary cells and battery mould
Group
To achieve the goals above, the utility model provides a kind of secondary cell and battery modules.
Secondary cell includes electrode assembly, shell, cap assembly and afflux component.Shell has accommodating chamber, accommodates
Chamber has opening along one end of first direction.Electrode assembly is contained in accommodating chamber, and electrode assembly includes multiple along first
The electrode unit that direction is stacked.Cap assembly includes lamina tecti and first electrode terminal, and lamina tecti is connected to shell and covers
The opening of lid housing, first electrode terminal are set to lamina tecti.Afflux component connection electrode component and first electrode terminal, and collect
Flowing component includes terminal connecting plate, substrate and elastic plate.Terminal connecting plate is connected to first electrode terminal, and substrate is located at terminal company
Fishplate bar is along first direction close to the side of electrode assembly, and substrate is connected to electrode assembly, elastic plate connection terminal connecting plate and
Substrate.
Substrate and elastic plate are located at the same side of electrode assembly in a second direction, and second direction is perpendicular to first direction.
Substrate includes main part and bending part, and main part is perpendicular to second direction and is connected to elastic plate, and bending part extends from main part
And it is folded into the side of the separate electrode assembly of main part, and bending part is connected to electrode assembly.
In a second direction, main part has first surface in the side close to electrode assembly, and elastic plate is close to electrode
The side of component has second surface.In a second direction, compared with first surface, second surface is at least partly closer to electrode
Component.
In a second direction, bending part has third surface in the side far from electrode assembly, and elastic plate is far from electrode
The side of component has the 4th surface.In a second direction, compared with third surface, the 4th surface is closer to electrode assembly.
In a second direction, substrate has the 5th surface in the side far from electrode assembly, and the 4th surface is at least partly
Between third surface and the 5th surface.
Along the third direction perpendicular to first direction and second direction, the size of elastic plate is less than the size of main part.
On third direction, main part has the region beyond elastic plate, and bending part is from the area beyond elastic plate
Domain extends along the end of first direction.
Afflux component further includes transition plates, and transition plates connects elastic plate and terminal connecting plate, and transition plates is perpendicular to terminal
Connecting plate.On third direction, the size of transition plates and the size of terminal connecting plate are all larger than the size of elastic plate.
The section of elastic plate is waveform.
Battery modules include the secondary cell；Secondary cell is multiple and along the third direction perpendicular to first direction
It is arranged successively, and battery modules are greater than battery modules along the size of first direction along the size of third direction.
The beneficial effects of the utility model are as follows: in this application, the multiple electrodes unit in secondary cell is along first party
It can be superimposed in a first direction to the expansive force of arrangement, therefore the multiple electrode unit.In battery modules, the multiple two
The orientation of primary cell is perpendicular to first direction, therefore, even if swell increment of all secondary cells in orientation is folded
Be added together, will not the excessive resultant force of output so that secondary cell be avoided to be subject to crushing guarantee performance and the longevity of secondary cell
Life.In addition, elastic plate can absorb vibration by flexible deformation, reduce the active force between substrate and electrode assembly, reduces electricity
The damage of pole component.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the secondary cell of the utility model.
Fig. 2 is the exploded view of the secondary cell of Fig. 1.
Fig. 3 is the cross-sectional view of the electrode unit of Fig. 2.
Fig. 4 is the cross-sectional view that A-A makes along Fig. 3.
Fig. 5 is the schematic diagram according to the first embodiment of the afflux component of the secondary cell of the utility model.
Fig. 6 is the side view of the afflux component of Fig. 5.
Fig. 7 is a schematic diagram of the afflux component of Fig. 5 in forming process.
Fig. 8 is the schematic diagram according to the second embodiment of the afflux component of the secondary cell of the utility model.
Fig. 9 is the schematic diagram according to the 3rd embodiment of the afflux component of the secondary cell of the utility model.
Figure 10 is the schematic diagram according to the fourth embodiment of the afflux component of the secondary cell of the utility model.
Wherein, the reference numerals are as follows:
1 electrode assembly, 4 afflux component
11 electrode unit, 41 terminal connecting plate
111 anode pole piece, 42 substrate
421 main part of 111a plus plate current-collecting body
422 bending part of 111b positive electrode active material layer
112 cathode pole piece, 43 elastic plate
44 transition plates of 112a negative current collector
112b negative electrode active material layer S1 first surface
113 diaphragm S2 second surfaces
2 shell S3 third surfaces
The 4th surface 21 accommodating chamber S4
The 5th surface 3 cap assembly S5
31 lamina tecti Z first directions
32 first electrode terminal X second directions
33 second electrode terminal Y third directions
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
In the description of the present application unless specifically defined or limited otherwise, term " first ", " second ", " third " are only
For descriptive purposes, it is not understood to indicate or imply relative importance；Term " multiple " refers to more than two (including two
It is a)；Unless otherwise prescribed or explanation, term " connection ", " fixation " etc. shall be understood in a broad sense, for example, " connection " can be admittedly
Fixed connection, may be a detachable connection, or be integrally connected, or electrical connection or signal connection；" connection " can be direct phase
It even, can also be indirectly connected through an intermediary.For the ordinary skill in the art, it can manage as the case may be
Solve the concrete meaning of above-mentioned term in this application.
In the description of this specification, it is to be understood that the nouns of locality such as "upper", "lower" described in the embodiment of the present application are
With angle shown in the drawings come what is be described, the restriction to the embodiment of the present application should not be construed as.Below by specific reality
It applies example and the application is described in further detail in conjunction with attached drawing.
Battery modules generally include secondary cell, end plate, side plate and busbar connector.Secondary cell is multiple and is arranged successively.
The secondary cell of the application can be prismatic lithium ion battery.End plate is two and is respectively arranged at the multiple secondary cell
Along the both ends of orientation, side plate is two and is respectively arranged at the two sides of the multiple secondary cell, end plate and plate-side plate welding
Together and form the frame of rectangle.The multiple secondary cell is fixed on the frame.Busbar connector is by the multiple secondary electricity
Pond is linked together with series, parallel or series-parallel mode.
Referring to Figures 1 and 2, the secondary cell of the application includes electrode assembly 1, shell 2, cap assembly 3 and afflux structure
Part 4.
Accommodating chamber 21 is formed with inside shell 2, to accommodate electrode assembly 1 and electrolyte.Accommodating chamber 21 is along first party
There is opening to one end of Z, and electrode assembly 1 can be placed into shell 2 via the opening.Shell 2 can be by aluminum or aluminum alloy
The material of equal conductive metals is made.Orientation of the first direction Z perpendicular to secondary cells multiple in battery modules.
Electrode assembly 1 includes multiple electrode units 11 being stacked along first direction Z.Referring to Fig. 3, electrode unit 11 is wrapped
Anode pole piece 111, cathode pole piece 112 and diaphragm 113 are included, diaphragm 113 separates anode pole piece 111 and cathode pole piece 112.Electrode
Unit 11 can be formed and being helically wrapped anode pole piece 111, cathode pole piece 112 and diaphragm 113, and electrode unit 11 passes through
Pressure presses to form flat structure.Alternatively, each electrode unit 11 can also be by anode pole piece 111,112 and of cathode pole piece
Diaphragm 113 is laminated to be formed along first direction Z.
Referring to Fig. 4, anode pole piece 111 includes plus plate current-collecting body 111a and the anode coated on the surface plus plate current-collecting body 111a
Active material layer 111b, plus plate current-collecting body 111a can be aluminium foil, and positive electrode active material layer 111b may include LiMn2O4 or ferric phosphate
Lithium.Wherein, only partial region is coated with positive electrode active material layer 111b, specifically, plus plate current-collecting body to plus plate current-collecting body 111a
111a has the positive white space of uncoated positive active material layer 111b in one end of X in a second direction.Work as anode pole piece
After 111 coiling and moldings, multiple anode white spaces are stacked together.Wherein, second direction X is generally perpendicular to first direction Z.
Cathode pole piece 112 includes negative current collector 112a and the negative electrode active material coated on the surface negative current collector 112a
Layer 112b, negative current collector 112a can be copper foil, and negative electrode active material layer 112b may include graphite or silicon.Wherein, negative pole currect collecting
Only partial region is coated with negative electrode active material layer 112b to body 112a, and specifically, negative current collector 112a is X's in a second direction
One end has the cathode white space of uncoated negative electrode active material layer 112b.It is multiple negative after 112 coiling and molding of cathode pole piece
Pole white space is stacked together.
Cap assembly 3 includes lamina tecti 31, first electrode terminal 32 and second electrode terminal 33.Lamina tecti 31 is connected to shell
Body 2 and the opening for covering shell 2, so that electrode assembly 1 is sealed in accommodating chamber 21.First electrode terminal 32 and second electrode
Terminal 33 is set to lamina tecti 31.
Afflux component 4 is two, and an afflux component 4 is electrically connected first electrode terminal 32 and positive white space, another
A afflux component 4 is electrically connected second electrode terminal 33 and cathode white space.Certainly, in alternate embodiments, an afflux
Component 4 is electrically connected first electrode terminal 32 and cathode white space, another afflux component 4 is electrically connected 33 He of second electrode terminal
Positive white space.
In battery modules, multiple secondary cells can be arranged along third direction Y, wherein third direction Y is perpendicular to first party
To Z and second direction X.The battery modules of the application can be applied to electric car, in electric car, the first party of secondary cell
The short transverse of electric car is in substantially parallel relationship to Z；And the chassis height by electric car is limited, battery modules are along third
The size of direction Y is greater than battery modules along the size of first direction Z.
In charge and discharge process, each electrode unit 11 will appear expansion.In this application, the multiple electrodes in secondary cell
Unit 11 is arranged along first direction Z, therefore the expansion of the multiple electrode unit 11 can be superimposed on Z in a first direction.And
On three direction Y, the expansion of the multiple electrode unit 11 is smaller, thus the whole swell increment in third direction Y of electrode assembly 1 compared with
Small, accordingly, the expansive force that electrode assembly 1 acts on shell 2 is also smaller.
In battery modules, the orientation of the multiple secondary cell is perpendicular to first direction Z, therefore, even if all
Swell increment of the electrode assembly 1 in orientation be superimposed, will not the excessive resultant force of output, to avoid secondary electricity
Pond is subject to crushing, and guarantees performance and the service life of secondary cell.
In addition, in known technology, two end plates of battery modules need to clamp the multiple secondary cell, if secondary
The resultant force that cell expansion generates is excessive, and the weld that may result in end plate and side plate is broken, and battery modules is caused to fail.And
In the application, the resultant force that the multiple secondary cell generates during expansion is smaller, so that battery modules be avoided to fail.
The afflux component 4 of the application is described in detail with different embodiments below.
In the first embodiment, referring to Fig. 2 and Fig. 5, afflux component 4 includes terminal connecting plate 41, substrate 42 and elastic plate
43。
Terminal connecting plate 41 is generally perpendicular to first direction Z and is connected to first electrode terminal 32.It can be set on lamina tecti 31
There is terminal hole, first electrode terminal 32 may be disposed at the upside of lamina tecti 31 and cover terminal hole.It can be connected by punching press in terminal
Convex closure is formed on fishplate bar 41, convex closure can protrude into terminal hole and be welded in first electrode terminal 32.Due to first electrode terminal 32
In the upside of lamina tecti, so first electrode terminal 32 will not occupy the space of accommodating chamber 21, to improve space utilization rate.
Substrate 42 is located at terminal connecting plate 41 along first direction Z close to the side of electrode assembly 1, and substrate 42 is connected to electricity
Pole component 1.43 connection terminal connecting plate 41 of elastic plate and substrate 42.In a first direction on Z, elastic plate 43 is located at terminal connecting plate
Between 41 and substrate 42, and elastic plate 43 being capable of flexible deformation on Z in a first direction.
The positive white space of electrode assembly 1 is the lesser foil of thickness, and is fixed to substrate 42 by ultrasonic bonding.
When secondary cell vibration, positive white space is easy to damage, to reduce the conveyance capacity of electrode assembly 1, influences secondary
The performance of battery.And in this application, elastic plate 43 can absorb vibration by flexible deformation, reduce substrate 42 and electrode assembly
Active force between 1 reduces the damage of positive white space.
In addition, each electrode unit 11 will appear expansion in charge and discharge process.In this application, more in secondary cell
A electrode unit 11 is arranged along first direction Z, therefore the expansion of the multiple electrode unit 11 can be superimposed on Z in a first direction.
The swell increment of the multiple electrode unit 11 is superimposed together, and part anode white space is caused to generate position on Z in a first direction
It moves；And if the position of substrate 42 is fixed, the active force between positive white space and substrate 42 can significantly increase, in turn
Cause the risk of positive white space fracture.In this application, when the power that positive white space applies substrate 42 is transmitted to bullet
Property plate 43 when, elastic plate 43 can deform under force, so as to adjust the position of substrate 42, reduce positive white space with
Active force between substrate 42 reduces the risk of positive white space fracture.
Referring to Fig. 2, substrate 42 and elastic plate 43 are located at the same side of the X in a second direction of electrode assembly 1.Substrate 42 includes master
Body portion 421 and bending part 422.Plate of the main part 421 generally perpendicular to second direction X, elastic plate 43 is from 421 edge of main part
First direction Z extends close to one end of terminal connecting plate 41.Bending part 422 extends from main part 421 and is folded into main part 421
Separate electrode assembly 1 side.Preferably, bending part 422 is two and respectively from main part 421 along the two of first direction Z
End extends.
Referring to Fig. 7, before assembly electrode component 1 and afflux component 4, bending part 422 is generally perpendicular to main part 421.
In assembly, the positive white space of electrode unit 11 is first welded in bending part 422, then bends positive white space together
With bending part 422 so that bending part 422 is in substantially parallel relationship to main part 421.By bending, substrate 42 can reduce in second party
The space occupied on X improves space utilization rate.
The section perpendicular to third direction Y of elastic plate 43 is waveform.Wavy elastic plate 43 can be by
One direction Z and second direction X deformation is vibrated to absorb, and reduces the active force between positive white space and substrate 42.Certainly, elastic
Other flexible structures can also be used in plate 43.
Along third direction Y, the size of elastic plate 43 is less than the size of main part 421.By reducing elastic plate 43 along third
The size of direction Y can be effectively reduced the intensity of elastic plate 43, make elastic plate 43 can be with easier flexible deformation.
On third direction Y, main part 421 has the region beyond elastic plate 43, and bending part 422 exceeds bullet from described
Property plate 43 region along first direction Z end extend.In other words, on third direction Y, bending part 422 not with elastic plate
43 overlappings, so that bending part 422 and elastic plate 43 be avoided to interfere.
Afflux component 4 further includes transition plates 44, and transition plates 44 connects elastic plate 43 and terminal connecting plate 41, and transition plates 44
Perpendicular to terminal connecting plate 41.Transition plates 44 bends downward extension from one end of the X in a second direction of terminal connecting plate 41.
Afflux component 4 is preferably one-piece member.Specifically, afflux component 4 can by equal thickness metal plate via bending,
The techniques such as punching press are integrally formed.
Referring to Fig. 6, on second direction X, main part 421 has first surface S1, bullet in the side close to electrode assembly 1
Property plate 43 close to electrode assembly 1 side have second surface S2.First surface S1 is generally perpendicular to the flat of second direction X
Face, second surface S2 at least partially cambered surface.
On second direction X, bending part 422 has third surface S3 in the side far from electrode assembly 1, and elastic plate 43 exists
Side far from electrode assembly 1 has the 4th surface S4.Third surface S3 is plane and is in substantially parallel relationship to first surface S1, when
So, there can also be lesser angle between third surface S3 and first surface S1, be, for example, less than 30 °.4th surface S4 is substantially flat
Row is in second surface S2.
On second direction X, substrate 42 has the 5th surface S5 in the side far from electrode assembly 1, and the 5th surface S5 is flat
Row is in first surface S1.
The application can be by being stamped and formed out elastic plate 43.In the present embodiment, relative to main part 421,43 court of elastic plate
It protrudes side far from electrode assembly 1.At this point, on second direction X, compared with second surface S2, first surface S1 closer to
Electrode assembly 1；Compared with the 4th surface S4, the 5th surface S5 is closer to electrode assembly 1.
Preferably, on second direction X, compared with the S3 of third surface, the 4th surface S4 is closer to electrode assembly 1.At this point,
On second direction X, elastic plate 43 is between third surface S3 and first surface S；That is, elastic plate 43 will not be
Additional occupied space on two direction X, to effectively improve space utilization rate.
The other embodiments of the secondary cell of the application are illustrated below.To simplify the description, only main below to be situated between
The difference of the other embodiments that continue and first embodiment, the part not described are referred to first embodiment and are understood.
Fig. 8 is the schematic diagram according to the second embodiment of the afflux component of the secondary cell of the utility model.Second implements
The difference of example and first embodiment is only that elastic plate 43.
Specifically, referring to Fig. 8, in a second embodiment, relative to main part 421, elastic plate 43 is towards close to electrode assembly 1
Side protrusion.At this point, on second direction X, compared with first surface S1, second surface S2 is closer to electrode assembly 1；With
Five surface S5 are compared, and the 4th surface S4 is closer to electrode assembly 1.
In electrode unit 11, the end of the X in a second direction of isolation film 113 approximately forms an end face, and has on end face
There is small gap；Electrolyte inside shell 2 can enter the inside of electrode unit 11 via the gap, to improve electrode list
The wellability of member 11 reduces the risk of analysis lithium.On second direction X, usually the end face of main part 421 and electrode unit 11 it
Between reserve gap, block the gap on end face to avoid main part 421, guarantee wellability.
However, electrode unit 11 may move on second direction X when secondary cell vibration, cause positive blank area
The risk of domain fracture.And in a second embodiment, the second surface S2 of elastic plate 43 can abut directly against electrode unit 11
On end face, to limit movement of the electrode unit 11 on second direction X, the risk of positive white space fracture is reduced.
Meanwhile most of region of second surface S2 is arcwall face, so the end face of second surface S2 and electrode unit 11
Between contact area it is smaller, the influence to wellability is lower.
Fig. 9 is the schematic diagram according to the 3rd embodiment of the afflux component of the secondary cell of the utility model.Third is implemented
The difference of example and first embodiment is only that elastic plate 43.
Specifically, referring to Fig. 9, a part of elastic plate 43 is relative to first surface S1 towards the direction close to electrode assembly 1
Prominent, another part of elastic plate 43 is prominent towards the direction far from electrode assembly 1 relative to the 5th surface S5.
On second direction X, compared with first surface S1, second surface S2 is at least partly closer to electrode assembly 1.This
When, the second surface S2 of 3rd embodiment can be abutted directly against on the end face of electrode unit 11, be existed with limiting electrode unit 11
Movement on second direction X reduces the risk of positive white space fracture.
On second direction X, compared with the S3 of third surface, the 4th surface S4 is closer to electrode assembly 1.It at this time can be to avoid
Elastic plate 43 occupies additional space on second direction X, improves space utilization rate.
Preferably, the 4th surface S4 is at least partially disposed between third surface S3 and the 5th surface S5.At this point, elastic plate 43
The space between third surface S3 and the 5th surface S5 can be made full use of, the depth of 43 punching press of elastic plate is effectively increased, from
And make elastic plate 43 that there is preferably elasticity.
Figure 10 is the schematic diagram according to the fourth embodiment of the afflux component of the secondary cell of the utility model.4th implements
The difference of example and first embodiment is only that transition plates 44.
Specifically, referring to Fig.1 0, on third direction Y, the size of transition plates 44 and the size of terminal connecting plate 41 are big
In the size of elastic plate 43.
Transition plates 44 and terminal connecting plate 41 are perpendicular to one another, when electric current flow to terminal connecting plate 41 from transition plates 44,
The junction of transition plates 44 and terminal connecting plate 41 is easy heat production.If transition plates 44 is less than normal along the size of third direction Y,
The resistance of the junction of transition plates 44 and terminal connecting plate 41 is bigger than normal, and heat production is serious, causes the temperature of the junction excessively high；Together
When, the intensity of the junction of transition plates 44 and terminal connecting plate 41 is lower, is easily deformed when temperature rise is excessively high, when secondary cell vibrates
When, afflux component 4 is easy to be broken in the junction of transition plates 44 and terminal connecting plate 41.Fourth embodiment is by increasing transition plates
The intensity of the junction of transition plates 44 and terminal connecting plate 41 can be improved in 44 size and the size of terminal connecting plate 41, drop
The temperature rise of the junction of low transition plates 44 and terminal connecting plate 41 avoids afflux component 4 from being broken.
Claims (10)
1. a kind of secondary cell, which is characterized in that including electrode assembly (1), shell (2), cap assembly (3) and afflux component
(4)；
Shell (2) has accommodating chamber (21), and accommodating chamber (21) has opening along one end of first direction (Z)；
Electrode assembly (1) is contained in accommodating chamber (21), and electrode assembly (1) includes multiple being stacked along first direction (Z)
Electrode unit (11)；
Cap assembly (3) includes lamina tecti (31) and first electrode terminal (32), and lamina tecti (31) is connected to shell (2) and covers
The opening of shell (2), first electrode terminal (32) are set to lamina tecti (31)；
Afflux component (4) connection electrode component (1) and first electrode terminal (32), and afflux component (4) includes terminal connecting plate
(41), substrate (42) and elastic plate (43)；
Terminal connecting plate (41) is connected to first electrode terminal (32), and substrate (42) is located at terminal connecting plate (41) along first direction
(Z) close to the side of electrode assembly (1), and substrate (42) is connected to electrode assembly (1), elastic plate (43) connection terminal connecting plate
(41) and substrate (42).
2. secondary cell according to claim 1, which is characterized in that
Substrate (42) and elastic plate (43) are located at the same side of electrode assembly (1) (X) in a second direction, and second direction (X) is hung down
Directly in first direction (Z)；
Substrate (42) includes main part (421) and bending part (422), and main part (421) is perpendicular to second direction (X) and is connected to
Elastic plate (43), bending part (422) extend from main part (421) and are folded into the separate electrode assembly (1) of main part (421)
Side, and bending part (422) is connected to electrode assembly (1).
3. secondary cell according to claim 2, which is characterized in that
On second direction (X), main part (421) has first surface (S1) in the side close to electrode assembly (1), elastic plate
(43) there is second surface (S2) in the side close to electrode assembly (1)；
On second direction (X), compared with first surface (S1), second surface (S2) is at least partly closer to electrode assembly (1).
4. secondary cell according to claim 2 or 3, which is characterized in that
On second direction (X), bending part (422) has third surface (S3) in the side far from electrode assembly (1), elastic plate
(43) there is the 4th surface (S4) in the side far from electrode assembly (1)；
On second direction (X), compared with third surface (S3), the 4th surface (S4) is closer to electrode assembly (1).
5. secondary cell according to claim 4, which is characterized in that
On second direction (X), substrate (42) has the 5th surface (S5), and the 4th table in the side far from electrode assembly (1)
Face (S4) is at least partially disposed between third surface (S3) and the 5th surface (S5).
6. secondary cell according to claim 2, which is characterized in that along perpendicular to first direction (Z) and second direction (X)
Third direction (Y), the size of elastic plate (43) is less than the size of main part (421).
7. secondary cell according to claim 6, which is characterized in that on third direction (Y), main part (421) has
Region beyond elastic plate (43), and bending part (422) from the region beyond elastic plate (43) along the end of first direction (Z)
Portion extends.
8. secondary cell according to claim 6, which is characterized in that
Afflux component (4) further includes transition plates (44), and transition plates (44) connects elastic plate (43) and terminal connecting plate (41), and mistake
Cab apron (44) is perpendicular to terminal connecting plate (41)；
On third direction (Y), the size of transition plates (44) and the size of terminal connecting plate (41) are all larger than elastic plate (43)
Size.
9. secondary cell according to claim 1, which is characterized in that the section of elastic plate (43) is waveform.
10. a kind of battery modules, which is characterized in that including secondary cell of any of claims 1-9；
Secondary cell is multiple and is arranged successively along the third direction (Y) perpendicular to first direction (Z), and battery modules are along third
The size in direction (Y) is greater than battery modules along the size of first direction (Z).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920284040.1U CN209401762U (en) | 2019-03-06 | 2019-03-06 | Secondary cell and battery modules |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920284040.1U CN209401762U (en) | 2019-03-06 | 2019-03-06 | Secondary cell and battery modules |
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| CN209401762U true CN209401762U (en) | 2019-09-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851788A (en) * | 2021-08-19 | 2021-12-28 | 湖北亿纬动力有限公司 | Connection structure and battery |
| WO2023071767A1 (en) * | 2021-10-25 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electric device |
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2019
- 2019-03-06 CN CN201920284040.1U patent/CN209401762U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851788A (en) * | 2021-08-19 | 2021-12-28 | 湖北亿纬动力有限公司 | Connection structure and battery |
| WO2023071767A1 (en) * | 2021-10-25 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electric device |
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