CN205609693U - Electrochemistry energy memory - Google Patents
Electrochemistry energy memory Download PDFInfo
- Publication number
- CN205609693U CN205609693U CN201620435662.6U CN201620435662U CN205609693U CN 205609693 U CN205609693 U CN 205609693U CN 201620435662 U CN201620435662 U CN 201620435662U CN 205609693 U CN205609693 U CN 205609693U
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- Prior art keywords
- lug
- connecting portion
- side connecting
- battery core
- storage device
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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 an electrochemistry energy memory, it includes: top cap, the naked electric core of coiling formula and two electrically conductive switching pieces that the electric polarity is opposite. The top cap is provided with the utmost point post that the electric polarity is opposite. The naked electric core of coiling formula has the utmost point ear that the electric polarity is opposite. The utmost point post that the electric polarity is opposite of top cap and the utmost point ear that the electric polarity is opposite of naked electric core are connected to two electrically conductive switching piece electricity that the electric polarity is opposite, and each electrically conductive switching piece has: top cap side connecting portion are connected with the utmost point post electricity that sets up the counter electrode nature on the top cap, utmost point ear side connecting portion extend to the direction of keeping away from the top cap from top cap side connecting portion. Utmost point ear side connecting portion are formed with: the arch, in the inner space that utmost point ear outstanding towards the naked electric core of electrochemistry energy memory's coiling formula from the internal surface of utmost point ear side connecting portion and that insert the counter electrode nature of the naked electric core of coiling formula formed and contact and electricity connect in the utmost point ear of this counter electrode nature. The utility model discloses an electrochemistry energy memory's inside space utilization is high, and volume energy density is big.
Description
Technical field
This utility model relates to electrochemical field, particularly relates to a kind of electrochemical energy storage device.
Background technology
Lithium ion battery, as a kind of mechanism of new electrochemical power sources, has higher energy density and power density, more and more
Apply in electric automobile field.Comparing with orthodox car, the distance travelled of electric automobile is the emphasis that people are concerned about, logical
The space that battery bag left for by normal electric automobile is very limited, for obtaining the output of higher energy in the confined space, it is desirable to carrying
While rising lithium rechargeable battery mass energy density, it is necessary to improve volume energy density.
During lithium rechargeable battery used for electric vehicle produces, frequently with the method for raising volume energy density have laminated layer method
Production technology and lug cross cutting winding method production technology.Laminated layer method can be effectively improved battery container space availability ratio, but need right
Pole piece cuts in a large number, adds battery core cost, and laminated layer method production efficiency is low.Lug cross cutting winding method, although improve
Production efficiency, but need pole piece is carried out special cross cutting, service life and high expense that cutting knife is relatively low considerably increase
The production cost of battery core.
In order to solve the problems referred to above, the mentality of designing of prior art is: retain the winding process that production efficiency is higher, simultaneously
Cancel the lug die-cutting process of pole piece, the uncoated region of both positive and negative polarity is split at battery core housing two ends, by top cover two ends
Conductive vias sheet draws receives both positive and negative polarity pole.In this case, owing to the uncoated region of both positive and negative polarity is respectively at the two ends of battery,
Interlayer dislocation can be there is when the uncoated region of both positive and negative polarity is connected with conductive vias sheet respectively, cause the effective of lug junction
Area reduces, thus increases the physical resistance of join domain.In order to improve the effective area of connection, it is necessary to increase both positive and negative polarity not
The region of coating, this reduces the utilization rate in battery container space, thus decreases the volume energy density of battery.Especially
Ground, when the rolling thickness of battery increases, the dislocation of this both positive and negative polarity uncoated region interlayer is the biggest.
Utility model content
In view of problem present in background technology, the purpose of this utility model is to provide a kind of electrochemical energy storage device,
Its inner space utilization rate is high, and volume energy density is big.
To achieve these goals, this utility model provides a kind of electrochemical energy storage device, comprising: top cover, winding
The naked battery core of formula and the contrary conductive vias sheet of two electric polarities.
Top cover is provided with the pole that electric polarity is contrary.The naked battery core of takeup type has the lug that electric polarity is contrary.Two electrodes
Property the contrary pole of electric polarity of contrary conductive vias sheet electrical connection top cover and the contrary lug of the electric polarity of naked battery core, respectively lead
Electricity switching piece has: roof side connecting portion, for being fixed on the top cover of electrochemical energy storage device with right be arranged on top cover
Should the electrical connection of electropolar pole；Lug side connecting portion, extends to the direction away from top cover from roof side connecting portion.
Wherein, lug side connecting portion is formed: protruding, from the inner surface of lug side connecting portion towards electrochemical energy storage device
The naked battery core of takeup type highlight and insert the naked battery core of takeup type counter electrode lug formed inner space in and contact
And it is electrically connected to the lug of this counter electrode.
The beneficial effects of the utility model are as follows:
According in electrochemical energy storage device of the present utility model, the projection of the lug side connecting portion of each conductive vias sheet by
In inserting the inner space that the lug of counter electrode of the naked battery core of takeup type is formed, and contact and electricity in this inner space
It is connected to the lug of this counter electrode, thus adds the connection contact surface of each conductive vias sheet and the lug of counter electrode
Amass, and then improve the inner space utilization rate of electrochemical energy storage device, and add the volume energy of electrochemical energy storage device
Density.
Accompanying drawing explanation
Fig. 1 is according to electrochemical energy storage device of the present utility model axonometric chart in one embodiment；
Fig. 2 is the amplification view that the line A-A along Fig. 1 is made；
Fig. 3 is the exploded view of Fig. 1；
Fig. 4 is the conductive vias sheet axonometric chart in Fig. 1；
Fig. 5 is the sectional view that the line B-B along Fig. 4 is made；
Fig. 6 is the deformation pattern of Fig. 5；
Fig. 7 is according to electrochemical energy storage device of the present utility model axonometric chart in another embodiment；
Fig. 8 is the exploded view of Fig. 7；
Fig. 9 is the conductive vias sheet axonometric chart in Fig. 7；
Figure 10 is a deformation pattern of Fig. 9.
Wherein, description of reference numerals is as follows:
1 conductive vias sheet 31 positive plate
11 roof side connecting portion 32 negative plates
12 lug side connecting portion 33 isolating membrane
121 protruding 4 explosion-proof valves
2 top covers 5 seal nail
21 pole O liquid injection holes
3 naked battery core S lugs
Detailed description of the invention
Describe in detail with reference to the accompanying drawings according to electrochemical energy storage device of the present utility model.
Referring to figs. 1 through Figure 10, include according to electrochemical energy storage device of the present utility model: the naked battery core of top cover 2, takeup type 3
And the conductive vias sheet 1 that two electric polarities are contrary.
Top cover 2 is provided with the contrary pole of electric polarity 21.The naked battery core of takeup type 3 has the lug S that electric polarity is contrary.Two
The electric polarity that the conductive vias sheet 1 that electric polarity is contrary electrically connects the contrary pole 21 of the electric polarity of top cover 2 and naked battery core 3 is contrary
Lug S, each conductive vias sheet 1 has: roof side connecting portion 11, for be fixed on the top cover 2 of electrochemical energy storage device with set
The pole 21 putting the counter electrode on top cover 2 electrically connects；Lug side connecting portion 12, from roof side connecting portion 11 to away from top
The direction of lid 2 extends.
Wherein, the lug side connecting portion 12 of at least one conductive vias sheet 1 is formed: protruding 121, from lug side connecting portion
The inner surface of 12 highlights and inserts the counter electrode of the naked battery core of takeup type 3 towards the naked battery core of takeup type 3 of electrochemical energy storage device
Property the inner space that formed of lug S in and contact and be electrically connected to the lug S of this counter electrode.
According in electrochemical energy storage device of the present utility model, the lug side connecting portion 12 of each conductive vias sheet 1 convex
Rise 121 owing to inserting in the inner space that the lug S of the counter electrode of the naked battery core of takeup type 3 is formed, and in this inner space
Interior contact and be electrically connected to the lug S of this counter electrode, thus add the lug of each conductive vias sheet 1 and counter electrode
The connection contact area of S, and then improve the inner space utilization rate of electrochemical energy storage device, and add electrochemical energy storage dress
The volume energy density put.
According to electrochemical energy storage device of the present utility model, in one embodiment, the projection 121 of lug side connecting portion 12 exists
The interior welds of the lug S of counter electrode is in the lug S of counter electrode.Further, welding can be ultra-sonic welded.
In one embodiment, the shape of protruding 121 can be T-shaped, L-shaped or I shape, and the most not only limit is so, the shape of protruding 121
Shape may also be fabricated which other shape.
In one embodiment, the projection 121 of lug side connecting portion 12 can be one or more.
In one embodiment, conductive vias sheet 1 can be formed in one.
In one embodiment, conductive vias sheet 1 can be split molding.
In one embodiment, conductive vias sheet 1 can be made up of metal material.
In one embodiment, with reference to Fig. 2, the naked battery core of takeup type 3 comprises the steps that positive plate 31, has non-film district；Negative plate
32, there is non-film district；And isolating membrane 33.Wherein, the naked battery core of takeup type 3 is by positive plate 31, isolating membrane 33 and negative plate
32 windings form, and the non-film district of positive plate 31 constitutes the positive pole ear S of the naked battery core of takeup type 3 and forms positive pole pole via winding
The inner space of ear S；Correspondingly, the non-film district of negative plate 32 constitutes negative lug S of the naked battery core of takeup type 3 and via winding
Form the inner space of negative lug S.
Here remarking additionally, electric polarity is that the projection 121 of the lug side connecting portion 12 of positive conductive vias sheet 1 is inserted
Enter in the inner space of the positive pole ear S being made up of the non-film district of positive plate 31, and this projection 121 contacts and is just electrically connected to
Pole lug S.Correspondingly, electric polarity is that the projection 121 of lug side connecting portion 12 of negative conductive vias sheet 1 is inserted by negative plate 32
The inner space of negative lug S that constitutes, non-film district in, and this projection 121 contacts and is electrically connected to negative lug S.This
Outward, this to insert the mode connected simple, decreases each of the non-film district of positive plate 31 and the non-film district of negative plate 32
Dislocation between Ceng, thus improve the volume energy density of electrochemical energy storage device.
In one embodiment, referring to figs. 1 through Fig. 6, the naked battery core of takeup type 3 can be one, correspondingly, and conductive vias sheet 1
The projection 121 of lug side connecting portion 12 can be one.
In one embodiment, with reference to Fig. 7 to Figure 10, the naked battery core of takeup type 3 can be multiple, correspondingly, and conductive vias sheet 1
The projection 121 of lug side connecting portion 12 can be multiple.
In one embodiment, with reference to Fig. 7, the naked battery core of multiple takeup types 3 is arranged side by side, and the electricity of the naked battery core of each takeup type 3
The lug S that polarity is identical is positioned at the same side.
In one embodiment, the lug side connecting portion 12 of the conductive vias sheet 1 that two electric polarities are contrary is each formed with projection
121。
In one embodiment, electrochemical energy storage device may also include that insulation crust (not shown), is arranged on each conductive vias
The outside of the lug side connecting portion 12 of sheet 1 fully wrapped around lug side connecting portion 12.Being disposed to of insulation crust prevents electricity
Chemical energy storage device is short-circuited when being extruded by side, thus protects electrochemical energy storage device.
In one embodiment, referring to figs. 1 through Fig. 3 and Fig. 7 and Fig. 8, electrochemical energy storage device may also include that explosion-proof valve 4,
It is arranged at top cover 2；And seal nail 5, for sealing the liquid injection hole O being arranged on top cover 2.
In one embodiment, electric polarity be the material of positive conductive vias sheet 1 can be Al1060, electric polarity is negative conduction
The material of switching piece 1 can be CuT2.
In one embodiment, electrochemical energy storage device can be secondary cell or capacitor.Further, secondary cell can be
Lithium ion battery, Zinc ion battery or sodium-ion battery.Capacitor can be ultracapacitor.
Claims (10)
1. an electrochemical energy storage device, including:
Top cover (2), is provided with the contrary pole of electric polarity (21)；
The naked battery core of takeup type (3), has the contrary lug of electric polarity (S)；
The conductive vias sheet (1) that two electric polarities are contrary, the contrary pole (21) of electric polarity of electrical connection top cover (2) and naked battery core
(3) lug (S) that electric polarity is contrary, each conductive vias sheet (1) has:
Roof side connecting portion (11), is used for being fixed on top cover (2) with the pole with the counter electrode being arranged on top cover (2)
(21) electrical connection；
Lug side connecting portion (12), extends to the direction away from top cover (2) from roof side connecting portion (11)；
It is characterized in that, lug side connecting portion (12) of at least one conductive vias sheet (1) is formed:
Protruding (121), the inner surface from lug side connecting portion (12) is prominent towards the naked battery core of takeup type (3) and to insert takeup type naked
In the inner space that the lug (S) of the counter electrode of battery core (3) is formed and contact and be electrically connected to the pole of this counter electrode
Ear (S).
Electrochemical energy storage device the most according to claim 1, it is characterised in that the projection of lug side connecting portion (12)
(121) in the interior welds of lug (S) of counter electrode in the lug (S) of counter electrode.
Electrochemical energy storage device the most according to claim 1, it is characterised in that protruding (121) be shaped as T-shaped, L-shaped or
I shape.
Electrochemical energy storage device the most according to claim 1, it is characterised in that the projection of lug side connecting portion (12)
(121) it is one or more.
Electrochemical energy storage device the most according to claim 1, it is characterised in that
Conductive vias sheet (1) is formed in one；Or
Conductive vias sheet (1) is split molding.
Electrochemical energy storage device the most according to claim 1, it is characterised in that the naked battery core of takeup type (3) including:
Positive plate (31), has non-film district；
Negative plate (32), has non-film district；And
Isolating membrane (33)；
Wherein, the naked battery core of takeup type (3) is wound by positive plate (31), isolating membrane (33) and negative plate (32) and forms, positive plate
(31) non-film district constitutes the positive pole ear (S) of the naked battery core of takeup type (3) and forms the inside of positive pole ear (S) via winding
Space；Correspondingly, the non-film district of negative plate (32) constitutes the negative lug (S) of the naked battery core of takeup type (3) and via winding shape
Become the inner space of negative lug (S).
Electrochemical energy storage device the most according to claim 6, it is characterised in that the naked battery core of takeup type (3) is one, accordingly
Ground, the projection (121) of lug side connecting portion (12) of conductive vias sheet (1) is one；Or
The naked battery core of takeup type (3) is multiple, and correspondingly, the projection (121) of lug side connecting portion (12) of conductive vias sheet (1) is
Multiple.
Electrochemical energy storage device the most according to claim 7, it is characterised in that when the naked battery core of takeup type (3) is multiple,
The naked battery core of multiple takeup types (3) are arranged side by side, and the identical lug (S) of the electric polarity of the naked battery core of each takeup type (3) is positioned at same
Side.
Electrochemical energy storage device the most according to claim 1, it is characterised in that the conductive vias sheet that two electric polarities are contrary
(1) lug side connecting portion (12) is each formed with projection (121).
Electrochemical energy storage device the most according to claim 1, it is characterised in that electrochemical energy storage device is secondary cell
Or capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435662.6U CN205609693U (en) | 2016-05-13 | 2016-05-13 | Electrochemistry energy memory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435662.6U CN205609693U (en) | 2016-05-13 | 2016-05-13 | Electrochemistry energy memory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205609693U true CN205609693U (en) | 2016-09-28 |
Family
ID=56966375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620435662.6U Active CN205609693U (en) | 2016-05-13 | 2016-05-13 | Electrochemistry energy memory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205609693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107369853A (en) * | 2016-05-13 | 2017-11-21 | 宁德时代新能源科技股份有限公司 | Electrochemical energy storage device |
| CN107546409A (en) * | 2017-09-07 | 2018-01-05 | 苏州绿标新能源科技有限公司 | A kind of lithium rechargeable battery |
-
2016
- 2016-05-13 CN CN201620435662.6U patent/CN205609693U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107369853A (en) * | 2016-05-13 | 2017-11-21 | 宁德时代新能源科技股份有限公司 | Electrochemical energy storage device |
| CN107369853B (en) * | 2016-05-13 | 2023-08-11 | 宁德时代新能源科技股份有限公司 | Electrochemical energy storage device |
| CN107546409A (en) * | 2017-09-07 | 2018-01-05 | 苏州绿标新能源科技有限公司 | A kind of lithium rechargeable battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |