CN207572408U - Electrochemical appliance housing and electrochemical appliance - Google Patents
Electrochemical appliance housing and electrochemical appliance Download PDFInfo
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- CN207572408U CN207572408U CN201721731041.3U CN201721731041U CN207572408U CN 207572408 U CN207572408 U CN 207572408U CN 201721731041 U CN201721731041 U CN 201721731041U CN 207572408 U CN207572408 U CN 207572408U
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- electrochemical appliance
- ene coatings
- bottom wall
- graphite ene
- appliance housing
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The application provides a kind of electrochemical appliance housing, including：Bottom wall, side wall and the join domain of connection bottom wall and side wall, wherein, graphite ene coatings are provided in join domain.The application also provides a kind of electrochemical appliance.A kind of electrochemical appliance housing and electrochemical appliance that are designed to provide impact resistance, puncture resistant ability of the application.
Description
Technical field
This application involves cell package field, more particularly, to electrochemical appliance housing and electrochemical appliance.
Background technology
Packaging material used in current lithium ion Soft Roll electrode assembly is packaging foil, since electrode assembly energy density requires to get over
Come higher, packaging foil thickness is more and more thinner, and the shock/puncture strength that can bear is lower and lower.Packaging foil is in punching hole
Afterwards, due to acutely stretching and deformation rate is big, thickness also becomes thinner for dell face angle position.So punching is cheated the impact resistance of relief angle position, is resisted
It is minimum to puncture impact capacity, is the most weak position of packaging foil.
When packaging foil thickness is less than 70um, internal layer PP breakages is easily caused in production process to cause corrosion, and finished product
When falling when safety tests, the packaging foil of dell face angle position is also easiest to damaged and becomes most weak spot electrode assembly.It is broken
Electrode assembly meeting gas leakage, flatulence, potential danger is brought to the use of client after damage.
It is insufficient to solve angle position packaging foil thickness, there are following several means at present：(1) thicker packaging foil is replaced,
Make angle position thickness thickening and safer.Drawback is to waste electrode assembly space, reduces energy density.(2) increase punching hole is convex
The R angles of mould, after increasing R angles, it is possible to increase angle position thickness.Drawback is the angle position push-through packs aluminium foil R angles of bare electrode component, racks packet
Aluminium foil is filled, damaged, leakage risk occurs.
Utility model content
The problem of for the relevant technologies, the application's is designed to provide a kind of impact resistance, puncture resistant ability
Electrochemical appliance housing and electrochemical appliance.
To achieve the above object, this application provides a kind of electrochemical appliance housing, including：Bottom wall, side wall and connection
The join domain of bottom wall and side wall, wherein, graphite ene coatings are provided in join domain.
According to an embodiment of the present application, bottom wall is polygonal shape, wherein, join domain includes being located at two neighboring side wall
With the corner region at bottom wall intersection location, and graphite ene coatings are arranged in corner region.
According to an embodiment of the present application, bottom wall is rectangular shape, and side wall includes four side walls to adjoin one another,
In, join domain includes being provided with graphite ene coatings in four corner regions and each corner region.
According to an embodiment of the present application, graphite ene coatings are arranged on the inner surface of corner region.
According to an embodiment of the present application, graphite ene coatings are arranged on the outer surface of corner region.
According to an embodiment of the present application, graphite ene coatings are additionally arranged on the inner surface of entire bottom wall.
According to an embodiment of the present application, graphite ene coatings are additionally arranged on the inner surface of whole side walls.
According to an embodiment of the present application, the continuous and end to end graphite ene coatings of multistage are provided in join domain.
According to an embodiment of the present application, bottom wall is round or elliptical shape, and side wall is corresponding with bottom wall for shape
Cylindrical sidewall, wherein, the graphite ene coatings that multistage is connected with each other are provided in join domain.
According to an embodiment of the present application, there is the arc-shaped transition section being connected between bottom wall and side wall in join domain.
According to another embodiment of the application, also a kind of electrochemical appliance, including the electrification described in any of the above embodiment
Learn device case and the electrode assembly being contained in electrochemical appliance housing.
The advantageous effects of the application are：
In the electrochemical appliance housing and electrochemical appliance that are provided in the application, in connection bottom wall and the join domain of side wall
Middle setting graphite ene coatings, the good mechanical strength of graphene can enhance the puncture strength of electrochemical appliance housing, shielding angle position,
It avoids being crashed through by external hard object, so as to improve impact resistance, puncture resistant ability, reduces user's use and fall in the process and cause safety
Risk.
Description of the drawings
Fig. 1 is the lithium ion Soft Roll electrode assembly solid that graphene is coated with according to the corner region outer surface of one embodiment
Figure.
Fig. 2A is the sectional view for not rushing hole and packing aluminum plastic film before according to one embodiment, wherein, inside corner region
It is coated with graphene.
Fig. 2 B are the vertical views for not rushing hole and packing aluminum plastic film before of embodiment in Fig. 2A, wherein, corner region is coated with stone
Black alkene.
Fig. 3 is the sectional view for rushing hole and packing aluminum plastic film later according to one embodiment, wherein, corner region inner surface applies
There is graphene.
Fig. 4 is to be coated with the lithium ion Soft Roll electrode assembly of graphene according to the corner region outer surface of another embodiment to stand
Body figure.
Fig. 5 A are the sectional views for not rushing hole and packing aluminum plastic film before according to one embodiment, wherein, whole surface is coated with
Graphene.
Fig. 5 B are the vertical views for not rushing hole and packing aluminum plastic film before of Fig. 5 A embodiments, wherein, entire inner surface is coated with
Graphene.
Fig. 6 is the sectional view for rushing hole and packing aluminum plastic film later according to one embodiment, wherein, entire inside bottom wall is coated with
Graphene.
Specific embodiment
Below with reference to attached drawing, embodiments herein is described in detail.In this respect it is to be noted that electrochemistry fills
It puts including all devices that electrochemical reaction wherein occurs.Specifically, electrochemical appliance includes the primary battery of all kinds,
Secondary cell, fuel cell, solar cell and capacitor, such as ultracapacitor.Particularly preferred lithium secondary battery, including lithium
Metal secondary batteries, lithium rechargeable battery, lighium polymer secondary battery and lithium ion polymer secondary cell.In other words,
The application is not limited to a certain specific structure, and any appropriate structure can be applied in this application.
With reference to figure 1, the application provides a kind of electrochemical appliance housing, including：2 and of bottom wall 2, side wall 4 and connection bottom wall
The join domain 5 of side wall 4, wherein, graphite ene coatings 6 are provided in join domain 5.According to an embodiment of the present application, it connects
Region 5 is the arc-shaped transition section being connected between bottom wall 2 and side wall 4.
That is, being the join domain 5 of arc between bottom wall 2 and side wall 4, have in the join domain 5 of arc
Graphite ene coatings 6.Preferably, entire join domain 5 is respectively provided with graphite ene coatings 6.
According to an embodiment of the present application, bottom wall 2 is polygonal shape, wherein, join domain 5 includes being located at two neighboring side
Corner region 8 at 2 intersection location of wall 4 and bottom wall, and graphite ene coatings 6 are arranged in corner region 8.In other words, side
The quantity of wall 4 is identical with the quantity on the side of bottom wall 2, and each side wall 4 adjoins one another around bottom wall 2, in two side walls 4 and bottom wall
2 connection is equipped with graphite ene coatings 6.
As shown in Fig. 2A, Fig. 2 B and Fig. 3, according to an embodiment of the present application, bottom wall 2 is rectangular shape, and side wall 4 includes
Four side walls 4 to adjoin one another, wherein, join domain 5 includes being provided in four corner regions 8 and each corner region 8
Graphite ene coatings 6.
According to an embodiment of the present application, the continuous and end to end graphite ene coatings of multistage are provided in join domain 5
6.Preferably, graphite ene coatings 6 are arranged on entire join domain 5.
With reference to figure 4, according to an embodiment of the present application, bottom wall 2 ' is round or elliptical shape, and side wall 4 ' is shape
Cylindrical sidewall corresponding with bottom wall 2 ', wherein, the graphite ene coatings 6 ' that multistage is connected with each other are provided in join domain 5 '.Its
In, in the embodiment shown in the drawings, graphite ene coatings 6 ' are provided in the outside of housing；But in other embodiments,
Graphite ene coatings 6 ' can also be located at the inside of housing as the case may be, and the application is not limited to this.
According to an embodiment of the present application, graphite ene coatings 6 are arranged on the inner surface of corner region 8.
According to an embodiment of the present application one, with reference to figure 2A and Fig. 2 B, graphite ene coatings 6 can apply before aluminum plastic film rushes hole
Smear the corner with 2 region of the same size of electrochemical appliance shell bottom wall of aluminum plastic film.Wherein lithium ion Soft Roll electrode group
The manufacture craft of part can prepare pack case (Pocket) to cheat to graphite ene coatings to punching, then encapsulation, coding, patch protection
Film, tears side open, tears protective film at exhaust (Degassing).
According to an embodiment of the present application two, with reference to figure 3, graphite ene coatings 6 can be applied to electricity after aluminum plastic film rushes hole
2 inner surface of corner region of chemical devices housing.Wherein, the manufacture craft of lithium ion Soft Roll electrode assembly can prepare packaging
Shell rushes hole process to graphite ene coatings setting up procedure, then encapsulation, coding, pasting protective film, be vented, tear side open, tear protective film；Lithium
The manufacture craft of ion Soft Roll electrode assembly, which can also be, prepares pack case process to hole process is rushed, and then encapsulation, coding, patch are protected
Cuticula, be vented, tear protective film to graphite ene coatings, tear side open.
According to an embodiment of the present application three, as shown in Figure 1, graphite ene coatings 6 are arranged on the outer surface of corner region 8.Increase
Deepen the mechanical strength of pitted surface angle position, so as to improve electrode assembly impact resistance, puncture resistant ability.
According to an embodiment of the present application, graphite ene coatings 6 are additionally arranged on the inner surface of entire bottom wall 2.
According to an embodiment of the present application four, with reference to figure 5A and Fig. 5 B, in the art, pass through the base material to such as aluminum plastic film
It carries out punching and cheats the housing that can be formed for electrochemical appliance.Therefore, in the electrochemical appliance housing provided in the application, graphite
Ene coatings 6 can aluminum plastic film rush hole before be applied to in 2 region of the same size of electrochemical appliance shell bottom wall.Wherein,
The manufacture craft of lithium ion Soft Roll electrode assembly can be prepared pack case and the setting of graphite ene coatings and rush hole process, then
Encapsulation coding, pasting protective film, is vented, tears side open, tears protective film.
According to an embodiment of the present application five, with reference to figure 6, graphite ene coatings 6 can be applied to electricity after aluminum plastic film rushes hole
The inner surface of the bottom wall 2 of chemical devices housing.Wherein the manufacture craft of lithium ion Soft Roll electrode assembly can be the system of pack case
It is standby, rush hole process to graphite ene coatings setting up procedure, then encapsulation and further battery preparation flow.
It packs aluminum plastic film pack case and includes nylon layer, Al layers, PP layers and graphene layer, wherein, the spray of graphite ene coatings 6
Apply process can be prepare pack case to any process being made between finished electrode component after (before flanging).
According to an embodiment of the present application, graphite ene coatings 6 are additionally arranged on the inner surface of whole side walls 4.
It should be appreciated that according to one embodiment of the application, graphite ene coatings 6 can also be arranged on the outer of entire bottom wall 2
The outer surface or the whole surface setting graphite ene coatings 6 in electrochemical appliance housing of surface or entire side wall 4, can also
In the inside of wrapping film.Preferably, the thickness of graphite ene coatings 6 is 0.01-10um.Graphite ene coatings 6 can be dropped in outer surface
Influence of the low graphite ene coatings to electrochemical appliance chemical property；Graphite ene coatings 6 can reduce aluminum plastic film in inner surface
The corrosion of middle aluminium layer.
According to another embodiment of the application, a kind of electrochemical appliance is also provided, including the electricity described in any of the above item
Chemical devices housing and the electrode assembly being contained in electrochemical appliance housing.
Graphite ene coatings 6 have puncture-resistant intensity well, and the dilute coating 6 of graphite is applied to can be complete on packaging aluminum plastic film
Shielding angle position.After bare electrode component enters hole, angle position anode and the Al layers of pack case can be well isolated from.Anode is effectively prevent to puncture
The generation for the problems such as PP forms electron channel, prevents electrochemical reaction, pre- anticorrosion.The puncture for enhancing electrode assembly is strong
Degree reduces client's use and falls in the process and cause security risk.
In addition, graphite ene coatings 6 are coated in iron, alloy etc. not at the corner region 8 of the material surface of cracky, can subtract
Less wear.
According to an embodiment of the present application, graphite ene coatings 6 can be the mixture of graphene powder and binding agent, Ke Yiti
The binding force of high graphite ene coatings 6 and shell.
It is applied directly on shell it should be appreciated that graphite ene coatings 6 can also be graphene powder, then table is carried out to shell
Surface treatment, surface treated shell can improve the binding force of graphene powder.It should be appreciated that surface treatment can improve
The cleannes of electrode assembly corner region 8 and the adhesive force of face coat, allow graphite ene coatings 6 that can preferably be attached to electrode
Component corner region 8 can be combined preferably with electrode assembly outer surface material (such as nylon, PET or other resin materials).
The gimmick of surface treatment has purging, heating, electrostatic treatment etc..Heating, drying is first passed through after graphite spraying alkene or crosses UV stoves, is accelerated
The curing of graphite ene coatings, then purge, it is ensured that spraying rear surface is without graphene powder and other foreign matters.
It these are only the preferred embodiment of the application, be not limited to the application, each embodiment is also not necessarily limited to list
Solely use, it can be in any combination between each embodiment.For those skilled in the art, the application can have various changes
And variation.It is all within spirit herein and principle, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection domain of application.
Claims (11)
1. a kind of electrochemical appliance housing, which is characterized in that including：Bottom wall, side wall and the connection bottom wall and the side wall
Join domain, wherein, graphite ene coatings are provided in the join domain.
2. electrochemical appliance housing according to claim 1, which is characterized in that the bottom wall is polygonal shape, wherein,
The join domain includes the corner region at the two neighboring side wall and the bottom wall intersection location, and the stone
Black ene coatings are arranged in the corner region.
3. electrochemical appliance housing according to claim 2, which is characterized in that the bottom wall is rectangular shape, and institute
It states side wall and includes four side walls to adjoin one another, wherein, the join domain includes four corner regions and each institute
It states and the graphite ene coatings is provided in corner region.
4. electrochemical appliance housing according to claim 2, which is characterized in that the graphite ene coatings are arranged on described turn
The inner surface of angular zone.
5. electrochemical appliance housing according to claim 2, which is characterized in that the graphite ene coatings are arranged on described turn
The outer surface of angular zone.
6. electrochemical appliance housing according to claim 2, which is characterized in that the graphite ene coatings are additionally arranged at entirely
On the inner surface of the bottom wall.
7. electrochemical appliance housing according to claim 2, which is characterized in that the graphite ene coatings are additionally arranged at whole
On the inner surface of the side wall.
8. electrochemical appliance housing according to claim 1, which is characterized in that be provided with multistage in the join domain
The continuous and end to end graphite ene coatings.
9. electrochemical appliance housing according to claim 1, which is characterized in that the bottom wall is round or oval shape
Shape, and the side wall is shape cylindrical sidewall corresponding with the bottom wall, wherein, it is provided with multistage in the join domain
The graphite ene coatings of interconnection.
10. electrochemical appliance housing according to claim 1, which is characterized in that have in the join domain and be connected to
Arc-shaped transition section between the bottom wall and the side wall.
11. a kind of electrochemical appliance, which is characterized in that filled including electrochemistry according to any one of claim 1 to 10
Put housing and the electrode assembly being contained in the electrochemical appliance housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721731041.3U CN207572408U (en) | 2017-12-13 | 2017-12-13 | Electrochemical appliance housing and electrochemical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721731041.3U CN207572408U (en) | 2017-12-13 | 2017-12-13 | Electrochemical appliance housing and electrochemical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207572408U true CN207572408U (en) | 2018-07-03 |
Family
ID=62687930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721731041.3U Active CN207572408U (en) | 2017-12-13 | 2017-12-13 | Electrochemical appliance housing and electrochemical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207572408U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207867A (en) * | 2019-05-10 | 2019-09-06 | 复旦大学 | A kind of graphene pressure sensor and its structure and preparation method |
| EP3680951A1 (en) * | 2019-01-08 | 2020-07-15 | The Boeing Company | System and method for improving a battery cell |
| CN113544890A (en) * | 2020-08-11 | 2021-10-22 | 宁德新能源科技有限公司 | Electrochemical device and electronic equipment |
-
2017
- 2017-12-13 CN CN201721731041.3U patent/CN207572408U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3680951A1 (en) * | 2019-01-08 | 2020-07-15 | The Boeing Company | System and method for improving a battery cell |
| US10938077B2 (en) | 2019-01-08 | 2021-03-02 | The Boeing Company | System and method for improving a battery cell |
| CN110207867A (en) * | 2019-05-10 | 2019-09-06 | 复旦大学 | A kind of graphene pressure sensor and its structure and preparation method |
| CN110207867B (en) * | 2019-05-10 | 2021-01-26 | 复旦大学 | Graphene pressure sensor and structure and preparation method thereof |
| CN113544890A (en) * | 2020-08-11 | 2021-10-22 | 宁德新能源科技有限公司 | Electrochemical device and electronic equipment |
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