CN109244517A - Battery core and electrochemical appliance - Google Patents
Battery core and electrochemical appliance Download PDFInfo
- Publication number
- CN109244517A CN109244517A CN201710558194.0A CN201710558194A CN109244517A CN 109244517 A CN109244517 A CN 109244517A CN 201710558194 A CN201710558194 A CN 201710558194A CN 109244517 A CN109244517 A CN 109244517A
- Authority
- CN
- China
- Prior art keywords
- pole piece
- battery core
- isolation film
- gel column
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0486—Frames for plates or membranes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
This application involves a kind of battery cores and preparation method thereof, electrochemical appliance.The battery core of the application includes anode pole piece, cathode pole piece and the isolation film being placed between anode pole piece and cathode pole piece, the edge of isolation film exceeds the edge of anode pole piece and cathode pole piece, and the edge of isolation film is equipped with the rubber column gel column that multi-layer isolation films can be fixed together.The battery core of the application can carry out isolation film effectively fixed, cause the risk of anode pole piece and cathode pole piece contact short circuit in the gap that the isolation film for reducing battery core periphery shrinks into ridges and isolation film is fully retracted between anode pole piece and cathode pole piece, and hardly influences energy density, the effect of impregnation of electrolyte, the overall dimensions of battery core and the appearance of battery core.
Description
Technical field
This application involves a kind of battery core and use the electrochemical appliance of the battery core.
Background technique
As the lithium ion secondary battery of high-energy density is in fields such as electronic mobile device, electric tool and electric cars
Be widely used, the security performance of lithium ion battery is required also higher and higher.Electronic product can often occur in use
The mechanical abuse such as fall, collide, vibrating, this is just higher and higher to the drop performance requirement for the battery core for being built in lithium battery.
When electronic product falls, it is built in anode pole piece and the cathode pole of the free electrolyte intense impact battery core in battery core
Isolation film between piece.As shown in Figure 1, due to the impact of electrolyte, so that isolation film 3 is shunk to the direction that electrolyte impacts
Wrinkle formed shrink isolation film 5, cause 1 contact short circuit of anode pole piece 2 and cathode pole piece, in some instances it may even be possible to cause battery core generate heat,
The safety problems such as fire.
Summary of the invention
Problems to be solved by the invention
For the technical problems in the prior art, the application provides a kind of battery core and electrochemical appliance, the application's
Battery core effectively fixed to isolation film progress, reduction battery core periphery isolation film can shrink into ridges and isolation film is fully retracted to just
Cause the risk of anode pole piece and cathode pole piece contact short circuit in gap between pole pole piece and cathode pole piece, and hardly
It will affect the energy density of battery core, the effect of impregnation of electrolyte, the overall dimensions of battery core and appearance.
The solution to the problem
The application provides a kind of battery core comprising anode pole piece, cathode pole piece and is placed in anode pole piece and cathode pole piece
Between isolation film, the edge of the isolation film exceeds the edge of the anode pole piece and the cathode pole piece, and the isolation
The edge of film is equipped with the fixing piece that isolation film described in multilayer can be fixed together.
Fixing piece is rubber column gel column, and the edge of the isolation film is provided with mounting hole, and the rubber column gel column is installed on the mounting hole.
The upper and lower ends of the fixing piece are provided with blocking portion.
The rubber column gel column is pin shape, and its fusing point is lower than the fusing point of the isolation film, and the rubber column gel column melted by heating makes multilayer
The isolation film is bonded together.
In at least one edge of the battery core, all isolation films are fixed together by the rubber column gel column.
The material of the rubber column gel column is hot melt adhesive.
The length of the rubber column gel column be more than or equal to the isolation film overall thickness and be less than the battery core thickness.
The diameter of the rubber column gel column is less than the length that the isolation film exceeds the anode pole piece and the cathode pole piece.
The diameter of the rubber column gel column is 0.1-2mm.
The application also provides a kind of electrochemical appliance, and the electrochemical appliance includes:
According to the battery core of the application；
Electrolyte；And
Pack case encapsulates the battery core and the electrolyte.
The effect of invention
In the battery core of the application, the edge of isolation film exceeds the edge of anode pole piece and cathode pole piece, and isolation film
Edge is equipped with the fixing piece that multi-layer isolation films can be fixed together, to reduce battery core periphery since isolation film is complete
It is retracted in the gap between anode pole piece and cathode pole piece and is caused the risk of anode pole piece and cathode pole piece contact short circuit, is mentioned
Security performance of the high battery core in the case where the machinery abuse condition such as falling, colliding, vibrate.Meanwhile being installed in the battery core of the application
Fixing piece hardly influences the energy density of battery core, the effect of impregnation of electrolyte, the overall dimensions of battery core and appearance.
In at least one embodiment of the application, the rubber column gel column melted by heating of the battery core of the application keeps multi-layer isolation films viscous
Knot together, is reliably prevented from isolation film and shrinks into ridges relative to anode pole piece and cathode pole piece and be retracted to just with isolation film
In gap between pole pole piece and cathode pole piece.
Detailed description of the invention
Fig. 1 is the cross-sectional view for the battery core that isolation film is shunk in the prior art；
Fig. 2 is the top view of the battery core of the application；
Fig. 3 is the cross-sectional view of the battery core of the application shown in Fig. 2.
Description of symbols
1- cathode pole piece；2- anode pole piece；3- isolation film；4- rubber column gel column；The isolation film that 5- is shunk；The edge of W- isolation film
Width.
Specific embodiment
It is described in detail below with reference to battery core and preparation method of the attached drawing to the application.
Referring to figs. 2 and 3, the battery core of the application includes cathode pole piece 1, anode pole piece 2, isolation film 3.Isolation film 3 is placed in
Between cathode pole piece 1 and anode pole piece 2.The edge of cathode pole piece 1 exceeds the edge of anode pole piece 2, and the edge of isolation film 3 is super
The edge of cathode pole piece 1 out.The edge of isolation film is equipped with the fixing piece that multi-layer isolation films 3 can be fixed together, i.e.,
Rubber column gel column 4.In this application, the edge of isolation film refers to the part at edge of the isolation film 3 beyond cathode pole piece 1, and the part
It is free end.Since the edge of multi-layer isolation films 3 is fixed together by rubber column gel column 4, so that being formed mutually between each layer isolation film 3
Active force.Therefore, it can reliably prevent isolation film 3 from shrinking into ridges relative to cathode pole piece 1 and anode pole piece 2, and then reduce
Since isolation film 3 is retracted in the gap between cathode pole piece 1 and anode pole piece 2 and cause cathode pole piece 1 and anode pole piece 2
The risk of contact short circuit.
Rubber column gel column 4 can be set to pin shape, i.e. rubber column gel column 4 is made of colloidal materials and is shaped like in pin.It is being isolated
The edge of film 3 is provided with the mounting hole (not shown) of installation rubber column gel column 4.Rubber column gel column 4 is placed in mounting hole, it then will be electric
Core is placed in hot environment, rubber column gel column 4 at a suitable temperature be heated the regular hour after melt, thus by the edge of isolation film 3
It is bonded together.Note that the fusing point of material selected by rubber column gel column 4 is necessarily less than the fusing point of material selected by isolation film, thus
It can guarantee not interfering with isolation film 3 when melting rubber column gel column 4.Since rubber column gel column 4 is placed on the inside of mounting hole, the glue after melting
Column 4 is limited by mounting hole, can only be dissolved in the periphery of mounting hole inside and mounting hole and the contact site of rubber column gel column 4, no
Gap between multi-layer isolation films 3 can be completely filled out.Therefore, rubber column gel column 4 can not only play the role of fixed isolation film 3, simultaneously
Hardly influence the energy density of battery core, the overall dimensions and appearance of the effect of impregnation of electrolyte and battery core.
In addition, by the way that the blocking portion that isolation film 3 can be stopped to slide from the both ends of rubber column gel column 4 is arranged at the both ends of fixing piece,
Also it can effectively prevent the contraction of isolation film 3.For example fixing piece can be the rubber column gel column that both ends have blocking portion, be also possible to it
He does not influence the fixing piece that both ends made of the material of battery core performance have blocking portion, such as material identical as isolation film.In this way,
Multi-layer isolation films 3 can be securely fixed together by rubber column gel column 4 by its own mechanical structure, and not had to by by rubber column gel column
4 meltings and fix isolation film 3, operate more simple, conveniently.
The mounting hole that the edge of isolation film is arranged in can be set to 1 row or multiple rows of, and every row is set as multiple.Further
Ground, mounting hole are set as 1-3 row, and every row is set as 5-20.Further, mounting hole is set as 1 row, and every row is set as 5-
10.Correspondingly, matching rubber column gel column 4 is installed in each mounting hole.
The material of rubber column gel column 4 can choose hot melt adhesive.It can specifically include but be not limited to ethene-vinyl acetate copolymer
(EVA) hot melt adhesive, polyamide (PA) hot melt adhesive, polyurethane (PU) hot melt adhesive, polyethylene (PE) hot melt adhesive, Polyurethane, asphalt mixtures modified by epoxy resin
Rouge, polyacrylate, polyureas, polycarbonate etc..Certainly, for preferably fixed bonding isolation film 4, the material of rubber column gel column 4 can also
To be two kinds or more kinds of mixing in the above material.
The material of the isolation film 3 of the application can be polyolefin film.Specifically, the material of isolation film 3 is polypropylene screen, gathers
The multilayer complex films of vinyl film or polypropylene and polyethylene.
The application also provides a kind of electrochemical appliance.The electrochemical appliance include above-described battery core, electrolyte and
Pack case.Battery core and electrolyte are packaged in pack case.Pack case can be aluminum plastic film, or aluminum hull or steel shell etc..Electricity
Solving matter can be electrolyte, or gel electrolyte.
The electrochemical appliance of the application can be battery or capacitor etc..
The battery core of the application can be prepared by following steps.
Firstly, providing cathode pole piece 1, isolation film 3, anode pole piece 2.Isolation film 3 is placed in cathode pole piece 1 and anode pole piece 2
Between.The edge of cathode pole piece 1 exceeds the edge of anode pole piece 2, prevents the generation of analysis lithium phenomenon.The edge of isolation film 3 exceeds
The edge of cathode pole piece 1, in order to install rubber column gel column 4 in the edge of isolation film.
Then, mounting hole is beaten in the edge of isolation film, the rubber column gel column 4 of suitable dimension is placed in mounting hole.Mounting hole
Specific size can according to the size of rubber column gel column 4 to be mounted set.The size of rubber column gel column 4 need to be according to the ruler of the battery core of the application
The width W of the edge of the overall thickness and isolation film of very little and all isolation films 3 does optimization selection.The length of rubber column gel column 4 in principle
Degree need to be greater than the overall thickness of all isolation films 3, but need to be less than the thickness of battery core.The length of rubber column gel column 4 is controlled in 1-8mm, more into one
Step ground, can be 1-4mm.The width W for the edge that the diameter of rubber column gel column 4 need to be less than isolation film specifically can control in 0.1-
2mm, it is possible to further be 0.2-1mm.The spacing of each mounting hole need to according to the effect of the isolation film of being adhesively fixed 3 with
And the width W of the edge of isolation film does optimization selection.
After installing rubber column gel column 4, battery core is placed under high temperature heating to melt rubber column gel column 4, the rubber column gel column 4 after melting is by isolation film 3
Edge be securely fixed together, to prevent the shrinking into ridges relative to cathode pole piece 1 of isolation film 3.Melt rubber column gel column 4
Temperature can be set to 50-150 DEG C, can be 60-100 DEG C further；Heating time is set as 1-20min, more into one
Step ground can be 1-5min, specifically can do optimization selection according to the type and material of rubber column gel column 4.
The battery core of the application can be takeup type battery core or isolation film 3 with zigzag arrangement and by anode pole piece 2 and cathode
Pole piece 1 is kept apart and the lamination type electric core that is formed, and in this case, the both sides of the edge of isolation film 3 exceed the two sides of cathode pole piece 1
Edge, rubber column gel column 4 are installed on two edges of isolation film；The battery core of the application is also possible to by anode pole piece 2, isolation film 3, bears
Pole pole piece 1 circuits sequentially superposition and the lamination type electric core of formation, and in this case, the edge of isolation film 3 exceeds cathode pole
The edge of piece 1, rubber column gel column 4 are installed on four edges of isolation film.
In addition, although in the above-described embodiment, whole isolation films 3 is run through by a rubber column gel column 4, to realize isolation film
3 fixation it should be appreciated that can also be by two or more root rubber column gel column 4 is applied in combination all or part of isolation film
3 is fixed.
Embodiment 1
The battery core of the application is prepared, and guarantees that the edge of isolation film 3 exceeds the edge of cathode pole piece 1, and isolation film
Edge width W be 2mm.The rubber column gel column 4 that 1 row's diameter is 1mm is installed in the edge of isolation film.The material of rubber column gel column 4 is
Ethene-vinyl acetate copolymer (EVA) hot melt adhesive.The battery core of the present embodiment is placed under predetermined temperature and heats the scheduled time,
4 melted by heating of rubber column gel column, the edge of isolation film 3 is fixed together.Then according to the manufacture craft of lithium ion battery, this is implemented
The battery core of example is sealed in pack case, is assembled into battery by processes such as fluid injections.Then drop test, test are carried out to battery
As a result the drop testing results of the battery core of the application be can be used as.Percent of pass (voltage drop < 10mV) in following table, which refers to, to be tested
In the process, it is to pass through test that the reduction amount of voltage, which is less than 10mV,.Because the complete contraction of isolation film 3 can cause anode pole piece 2
The contact short circuit between cathode pole piece 3, so as to cause the reduction of cell voltage.Therefore, percent of pass is dropped by test voltage
Learn whether battery core is short-circuit.
Comparative example 1
Comparative example 1 and the difference of battery selected by embodiment 1 are: in a comparative example, the edge of isolation film is not pacified
Fill rubber column gel column 4.All structures of other of comparative example 1 and the battery of embodiment 1, material, manufacture craft and experimental situation are all the same.
Record battery falls the voltage change of front and back, the contraction situation of dismantling observation isolation film 3.
Embodiment 1 and the drop testing results comparison of comparative example 1 are as follows:
| Classification | Test quantity | Percent of pass (voltage drop < 10mV) | Isolation film shrinking percentage |
| Comparative example 1 | 10 | 1/10 | 9/10 |
| Embodiment 1 | 10 | 10/10 | 0/10 |
Compared with comparative example 1, for the battery of embodiment 1 in drop test, voltage drop percent of pass increases 90%.Dismantling electricity
Pond finds that the probability that shrinks into ridges of the isolation film 3 of the lithium ion battery in comparative example 1 is bigger, leads to anode pole piece 2 and cathode pole
Piece 1 is easier to occur contacting and cause internal short-circuit of battery, voltage drop occurs, thus the battery of comparative example 1 fails by falling mould
Quasi- test.
Embodiment 2
On the basis of embodiment 1, only change the material component of rubber column gel column 4, the material of the rubber column gel column 4 of isolation film edge insertion
For polyethylene (PE) hot melt adhesive.
Embodiment 2 and the drop testing results comparison of comparative example 1 are as follows:
| Classification | Test quantity | Percent of pass (voltage drop < 10mV) | Isolation film is shunk |
| Comparative example 1 | 10 | 1/10 | 9/10 |
| Embodiment 2 | 10 | 10/10 | 0/10 |
Compared with comparative example 1, for the battery of embodiment 2 in drop test, voltage percent of pass increases 90%, and isolation film
Shrinking percentage be 0.
Embodiment 3
On the basis of embodiment 2, only change the arrangement mode of rubber column gel column 4, being inserted into 2 row's diameters in the edge of isolation film is
The rubber column gel column 4 of 0.5mm.
Embodiment 3 and the drop testing results comparison of comparative example 1 are as follows:
| Classification | Test quantity | Percent of pass (voltage drop < 10mV) | Isolation film is shunk |
| Comparative example 1 | 10 | 1/10 | 9/10 |
| Embodiment 3 | 10 | 10/10 | 0/10 |
In this way, the fixed effect of isolation film 3 becomes apparent from.
By above test result it can be concluded that, the battery core of the application since the edge of isolation film is equipped with rubber column gel column 4,
Isolation film 3 is effectively prevented to shrink into ridges and along the impact direction of electrolyte since isolation film 3 is fully retracted to positive pole
The contact short circuit for causing anode pole piece 2 and cathode pole piece 1 in gap between piece 2 and cathode pole piece 2, improves the peace of battery core
Full performance.
In addition, the material component and arrangement mode by changing rubber column gel column 4 also can be further improved the security performance of battery core.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art is in the technical scope disclosed by the application, and any changes or substitutions that can be easily thought of, all
It should cover within the scope of protection of this application.
Claims (10)
1. a kind of battery core comprising anode pole piece, cathode pole piece and the isolation film being placed between anode pole piece and cathode pole piece,
It is characterized in that,
The edge of the isolation film exceeds the edge of the anode pole piece and the cathode pole piece, and the edge peace of the isolation film
Equipped with the fixing piece that isolation film described in multilayer can be fixed together.
2. battery core according to claim 1, which is characterized in that the fixing piece is rubber column gel column, and the edge of the isolation film is set
It is equipped with mounting hole, the rubber column gel column is installed on the mounting hole.
3. battery core according to claim 1, which is characterized in that the upper and lower ends of the fixing piece are provided with blocking portion.
4. battery core according to claim 2, which is characterized in that the rubber column gel column is pin shape, and its fusing point lower than it is described every
Fusing point from film, the rubber column gel column melted by heating are bonded together isolation film described in multilayer.
5. battery core according to claim 2, which is characterized in that at least one edge of the battery core, the rubber column gel column
All isolation films are fixed together.
6. the battery core according to any one of claim 2,4,5, which is characterized in that the material of the rubber column gel column is hot melt adhesive.
7. the battery core according to any one of claim 2,4,5, which is characterized in that the length of the rubber column gel column is more than or equal to institute
It states the overall thickness of isolation film and is less than the thickness of the battery core.
8. the battery core according to any one of claim 2,4,5, which is characterized in that the diameter of the rubber column gel column be less than it is described every
From the length that film exceeds the anode pole piece and the cathode pole piece.
9. battery core according to claim 8, which is characterized in that the diameter of the rubber column gel column is 0.1-2mm.
10. a kind of electrochemical appliance, which is characterized in that the electrochemical appliance includes:
Battery core according to claim 1 to 9；
Electrolyte；And
Pack case encapsulates the battery core and the electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558194.0A CN109244517A (en) | 2017-07-10 | 2017-07-10 | Battery core and electrochemical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558194.0A CN109244517A (en) | 2017-07-10 | 2017-07-10 | Battery core and electrochemical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109244517A true CN109244517A (en) | 2019-01-18 |
Family
ID=65083054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710558194.0A Pending CN109244517A (en) | 2017-07-10 | 2017-07-10 | Battery core and electrochemical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109244517A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131097A (en) * | 2021-03-24 | 2021-07-16 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| WO2021244672A1 (en) * | 2020-06-04 | 2021-12-09 | 江苏星源新材料科技有限公司 | Separator membrane, separator membrane roll, battery cell, and power lithium battery |
| CN114420993A (en) * | 2022-03-30 | 2022-04-29 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| CN114976493A (en) * | 2022-06-29 | 2022-08-30 | 广汽埃安新能源汽车有限公司 | Pole piece diaphragm bag and preparation method thereof, and battery cell and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203690386U (en) * | 2014-01-17 | 2014-07-02 | 东莞新能源科技有限公司 | Cell and electrochemical device |
-
2017
- 2017-07-10 CN CN201710558194.0A patent/CN109244517A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203690386U (en) * | 2014-01-17 | 2014-07-02 | 东莞新能源科技有限公司 | Cell and electrochemical device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244672A1 (en) * | 2020-06-04 | 2021-12-09 | 江苏星源新材料科技有限公司 | Separator membrane, separator membrane roll, battery cell, and power lithium battery |
| CN113131097A (en) * | 2021-03-24 | 2021-07-16 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| CN114420993A (en) * | 2022-03-30 | 2022-04-29 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| CN114420993B (en) * | 2022-03-30 | 2022-07-05 | 宁德新能源科技有限公司 | Electrochemical device and electronic apparatus |
| CN114976493A (en) * | 2022-06-29 | 2022-08-30 | 广汽埃安新能源汽车有限公司 | Pole piece diaphragm bag and preparation method thereof, and battery cell and preparation method thereof |
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Application publication date: 20190118 |