CN219457792U - Flexible battery and connection structure of flexible battery and electric appliance - Google Patents
Flexible battery and connection structure of flexible battery and electric appliance Download PDFInfo
- Publication number
- CN219457792U CN219457792U CN202320625071.5U CN202320625071U CN219457792U CN 219457792 U CN219457792 U CN 219457792U CN 202320625071 U CN202320625071 U CN 202320625071U CN 219457792 U CN219457792 U CN 219457792U
- Authority
- CN
- China
- Prior art keywords
- layer
- current collector
- flexible battery
- electrode material
- tab
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a flexible battery and a connection structure of the flexible battery and an electric appliance, wherein the flexible battery comprises a first packaging layer and a second packaging layer which are oppositely arranged; the inner surface of the first packaging layer is provided with a conductive connecting layer and a first current collector in parallel, and the conductive connecting layer and the first current collector are arranged at intervals; the inner surface of the second packaging layer is provided with a second current collector, the conductive connecting layer and the first current collector are arranged together and correspond to the second current collector, a first electrode material layer, a diaphragm electrolyte layer and a second electrode material layer are sequentially stacked between the first current collector and the second current collector, and the conductive connecting layer is attached to the second current collector; one end of the conductive connecting layer is used as a tab; one end of the first current collector is connected with another tab, and the other tab is arranged on the inner surface of the first packaging layer. The flexible battery of the utility model has no defects of large gap between the positive electrode material layer and the negative electrode material layer and small alignment area, and is also beneficial to the connection of the battery and an electric appliance.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a flexible battery and a connection structure of the flexible battery and an electric appliance.
Background
At present, the flexible printed battery mainly has the following two structures:
the first structure is: the battery structure is formed by stacking a first packaging layer, a first current collector, a first electrode material, a diaphragm electrolyte layer, a second electrode material, a second current collector and a second packaging layer in sequence (see patent CN110752383A, CN 103824997A), wherein a first tab is connected and arranged on the side of the first current collector, the first tab and the first current collector are arranged on the inner surface of the first packaging layer in a printing mode, a second tab is connected and arranged on the side of the second current collector, the second current collector and the second tab are arranged on the inner surface of the second packaging layer in a printing mode, and any tab of the first tab and the second tab is used as a positive electrode tab, and the other tab is used as a negative electrode tab. The main disadvantages of this battery structure are: the positive electrode tab and the negative electrode tab are respectively positioned on the inner surfaces of the first packaging layer and the second packaging layer which are oppositely arranged (namely, the positive electrode tab and the negative electrode tab are oppositely arranged), and most application scenes of the flexible battery are thin film sheet electric appliances, such as: active radio frequency identification tag (RFID), flexible display screen, flexible circuit etc. because these film sheet electrical apparatus adopts flexible printed circuit board generally, just, negative pole of circuit board all is located on one side of same flexible substrate generally (i.e. same plane syntropy setting), therefore, the opposite setting of current flexible battery's just, negative pole utmost point ear can cause the puzzlement to battery and electrical apparatus's connection, needs extra connection structure to connect, in addition the unstable, low in production efficiency, processing cost high scheduling problem exists.
The second structure is: the first current collector and the second current collector of the battery structure are printed on the first packaging layer, so that the first tab and the second tab (namely the positive tab and the negative tab) corresponding to the first current collector and the second current collector have the characteristics of same plane and same direction, but the defects of the battery structure are also raised, and the battery structure is characterized in that: (1) Compared with the first battery structure, the first electrode layer and the second electrode layer of the second battery structure are positioned on the same plane, and the problems of large gap and small alignment area exist between the first electrode layer and the second electrode layer (namely between the positive electrode layer and the negative electrode layer); (2) In order to reduce the influence of the defects of the structure as much as possible, more electrolyte is added into the battery as much as possible, and more electrolyte can cause the problems of high leakage rate of battery assembly, poor extrusion resistance, easy leakage and the like of the battery, which is also the reason that the structure solves the problem of connection between the battery and an electric appliance, but is still difficult to popularize.
Disclosure of Invention
The utility model aims to provide a flexible battery, wherein positive and negative lugs are arranged in the same plane and the same direction, so that the problems of poor connection, low production efficiency, high cost and the like between the flexible battery and an electric appliance in the prior art can be solved, and the flexible battery is stacked between positive and negative electrode layers, and has no structural defects of large gap and small alignment area between the positive and negative electrode layers of the flexible battery and the problems of long ion transmission distance, low reaction efficiency, weak load capacity, high assembly liquid leakage rate, and the like caused by the structural defects in the prior art.
A flexible battery comprises a first packaging layer and a second packaging layer which are oppositely arranged;
the inner surface of the first packaging layer is provided with a conductive connecting layer and a first current collector in parallel, the conductive connecting layer and the first current collector are arranged at intervals, and one side surface of the first current collector, which faces the second packaging layer, is provided with a first electrode material layer;
the inner surface of the second packaging layer is provided with a second current collector, the conductive connecting layer and the first electrode material layer are arranged together and correspond to the second current collector, the conductive connecting layer is attached to the second current collector, one side surface of the second current collector, which faces the first packaging layer, is provided with a second electrode material layer, the second electrode material layer is positioned at the side of the conductive connecting layer and corresponds to the first electrode material layer, and a diaphragm electrolyte layer is arranged between the first electrode material layer and the second electrode material layer;
one end part of the conductive connecting layer is used as a tab;
one end of the first current collector is connected with another tab, and the other tab is arranged on the inner surface of the first packaging layer.
In the utility model, one of the first electrode material layer and the second electrode material layer is a positive electrode material layer, and the other electrode material layer is a negative electrode material layer.
According to the flexible battery, the independent conductive connecting layer is additionally arranged on the side of the first current collector, one end part of the conductive connecting layer is used as a pole lug, and the conductive connecting layer can be attached to the second current collector by enlarging the area of the second current collector, so that the first electrode material layer and the second electrode material layer still keep stacked, and the defects of large gap between the positive electrode layer and the negative electrode layer, small alignment area, side effects caused by the structural defects and the like of the flexible battery with the existing first structure are avoided, so that the characteristics of high battery reaction efficiency, small electrolyte requirement, high load and the like are maintained; in addition, as the one tab electrically connected with the second electrode material layer and the other tab electrically connected with the first electrode material layer are both positioned on the inner surface of the first packaging layer, the two tabs are arranged in the same direction in the same plane, so that the connection with an electric appliance is convenient, the connection is reliable, the production efficiency is improved, and the cost is reduced.
Preferably, a sealant layer is disposed between the first packaging layer and the second packaging layer, and the sealant layer includes an annular peripheral portion, and the peripheral portion is disposed around the conductive connection layer and the first current collector in a circle. Further, the sealant layer further includes a strip-shaped intermediate separator located within the peripheral portion, the intermediate separator being located between the conductive connection layer and the first current collector to completely separate the two.
Preferably, the other tab is a section of the first current collector extending from the inner surface of the first packaging layer to the one end, and at this time, the other tab and the first current collector are printed together.
Preferably, the diaphragm electrolyte layer is fixedly connected with the sealant layer.
The second purpose of the utility model is to provide a connection structure of the flexible battery and the electrical appliance, wherein the electrical appliance is a film electrical appliance (such as an RFID antenna, a flexible circuit and a flexible screen), the flexible battery is the flexible battery of the first purpose, the film electrical appliance is arranged on a first packaging layer of the flexible battery, and positive and negative power connectors of the film electrical appliance are positioned on the same surface of the first packaging layer and are correspondingly contacted and connected with the two lugs of one lug and the two lugs of the other lug of the flexible battery to form a current loop. The first packaging layer of the flexible battery and the film substrate of the film electric appliance are of an integrated structure, namely, the first packaging layer and the film substrate are connected into a whole and are the same substrate.
Drawings
Fig. 1 is a schematic view of a split structure of a flexible battery of the present utility model, wherein a dash-dot line is an assembly positioning line;
FIG. 2 is a schematic diagram of an assembly structure of a first encapsulation layer, a conductive connection layer, a first electrode material layer, and a first current collector according to the present utility model;
FIG. 3 is a schematic view of the structure of FIG. 2 after addition of a sealant layer;
FIG. 4 is a schematic diagram of an assembly structure of a second encapsulation layer and a second electrode material layer according to the present utility model;
fig. 5 is a schematic front view of the connection structure of the flexible battery and the electrical appliance according to the present utility model when the positive and negative power connectors of the film electrical appliance are positioned on the inner surface of the first encapsulation layer.
Description of the embodiments
The following describes in detail the embodiments of the technical solution of the present utility model with reference to the accompanying drawings:
referring to fig. 1 to 4, a flexible battery includes a first encapsulation layer 10 and a second encapsulation layer 20 disposed opposite to each other;
the inner surface 11 of the first packaging layer 10 is provided with a conductive connection layer 30 and a first current collector 40 in parallel, the conductive connection layer 30 and the first current collector 40 are arranged at intervals, and a first electrode material layer 60 is arranged on the surface of the first current collector 40 facing the second packaging layer 20;
a second current collector 70 is disposed on the inner surface of the second packaging layer 20, the conductive connection layer 30 and the first electrode material layer 60 are disposed together corresponding to the second current collector 70, the conductive connection layer 30 and the second current collector 70 are bonded (for example, bonding is achieved by vacuumizing), a second electrode material layer 80 is disposed on the surface of the second current collector 70 facing the first packaging layer 10, the second electrode material layer 80 is located at the side of the conductive connection layer 30 and is disposed corresponding to the first electrode material layer 60, and a separator electrolyte layer 90 is disposed between the first electrode material layer 60 and the second electrode material layer 80;
one end of the conductive connection layer 30 is used as a tab 31;
one end of the first current collector 40 is connected with another tab 110, and the other tab 110 is disposed on the inner surface of the first packaging layer 10.
One of the first electrode material layer 60 and the second electrode material layer 80 of the present utility model is a positive electrode material layer, and the other electrode material layer is a negative electrode material layer.
The electrode polarity of each tab is determined by the electrode polarity of the electrode material layer with which it is electrically connected, for example: when the first electrode material layer 60 is a positive electrode material layer and the second electrode material layer 80 is a negative electrode material layer, the other tab 110 electrically connected to the first electrode material layer 60 is a positive electrode tab, and the one tab 31 electrically connected to the second electrode material layer 80 is a negative electrode tab; when the first electrode material layer 60 is a negative electrode material layer and the second electrode material layer 80 is a positive electrode material layer, the other tab 110 electrically connected to the first electrode material layer 60 is a negative electrode tab, and the one tab 31 electrically connected to the second electrode material layer 80 is a positive electrode tab.
According to the flexible battery, the independent conductive connecting layer 30 is additionally arranged on the side of the first current collector 40, and one end part of the conductive connecting layer 30 is used as a tab 31; by enlarging the area of the second current collector 70, the second current collector 70 can be attached to the conductive connection layer 30, electrons can be sequentially transmitted according to a transmission path of the second electrode material layer 80, the second current collector 70 and the conductive connection layer 30, the first electrode material layer 60 and the second electrode material layer 80 can still be kept stacked, and structural defects of large gaps and small alignment area between the positive electrode material layer and the negative electrode material layer and side effects caused by the structural defects of the flexible battery with the existing first structure do not exist, so that the characteristics of high battery reaction efficiency, small electrolyte requirement, high load and the like are maintained; in addition, since the two tabs 31 and 110 of the present utility model are both located on the inner surface of the first packaging layer 10, the two tabs (i.e. the positive and negative tabs) are disposed in the same plane and the same direction, so as to be convenient for connection with an electrical appliance, for example: when the electric appliance is a film electric appliance, the positive and negative lugs (31, 110) of the flexible battery are connected with positive and negative power interfaces of the film electric appliance 200 in a printing and covering way, so that the aims of reliable connection, improved production efficiency, reduced cost and the like are fulfilled.
Preferably, as shown in fig. 1 and 3, a sealant layer 100 is disposed between the first packaging layer 10 and the second packaging layer 20, where the sealant layer 100 is composed of an annular peripheral portion 101 and a strip-shaped middle partition portion 102 located in the peripheral portion 101, and the peripheral portion 101 is disposed around the conductive connection layer 30 and the first current collector 40 in one turn; the intermediate separator 102 is located between the conductive connection layer 30 and the first current collector 40 to completely separate the two. The sealing structure of the flexible battery is various and is not limited to sealing by sealant. Also, when a gel electrolyte is used, the electrolyte does not have fluidity and does not spread to the conductive connection layer 30, so the intermediate separator 102 may not be provided; when the vacuum sealing is adopted, the electrolyte cannot be spread at will, and the middle separator 102 is not required to be arranged at the moment; when the intermediate partition 102 is not required, the sealing glue layer 100 of the present utility model only has the annular peripheral portion 101 (i.e., the sealing glue layer 100 is annular).
Preferably, the other tab 110 is a section of the first current collector (as shown in fig. 2) extending from the first current collector 40 toward the one end along the inner surface of the first packaging layer 10, and in this case, the other tab 110 is printed together with the first current collector 40.
Preferably, the separator electrolyte layer 90 is fixedly connected to the sealant layer 100, and the separator electrolyte layer 90 is fixed by the sealant layer 100. The separator electrolyte layer 90 may be on the side of the sealant layer 100 facing the first encapsulation layer 10 or the side facing the second encapsulation layer 20, depending mainly on whether the sealant layer 100 is disposed on the inner surface of the first encapsulation layer 10 or the inner surface of the second encapsulation layer 20, the type of glue, and the like.
As shown in fig. 5, in the connection structure between the flexible battery and the electrical apparatus, the electrical apparatus is a film electrical apparatus 200 (such as an RFID antenna, a flexible circuit, and a flexible screen), the film electrical apparatus 200 is disposed on the first packaging layer 10 of the flexible battery, and positive and negative power connectors (201, 202) of the film electrical apparatus 200 are disposed on the same surface of the first packaging layer 10 and are correspondingly contacted and connected with the two pole ears 31 and 110 of the flexible battery to form a current loop. At this time, positive and negative power connectors (201, 202) of the film electric appliance 200 are generally located on the inner surface of the first packaging layer 10 and are in contact connection with the two lugs (31, 110) of the flexible battery in a printing coverage manner (as shown in fig. 5); of course, when the film electric appliance 200 is positioned on the outer surface of the first package layer 10, the positive and negative power connectors (201, 202) of the film electric appliance are in contact conductive connection with the two lugs (31, 110) of the flexible battery through the film bridge (this is a degradation connection mode corresponding to the connection mode when the film electric appliance 200 is positioned on the inner surface of the first package layer 10, and is not shown). Further, as shown in fig. 5, the first packaging layer 10 of the flexible battery and the film substrate of the film electrical apparatus are preferably in an integrally formed structure (i.e., they are the same piece of substrate that is integrally connected). Of course, the flexible battery and the thin film electric appliance 200 may be formed on different substrates by printing, etc., and then connected to the positive and negative power connectors (201, 202) by glue bonding or welding.
The first packaging layer 10 or the second packaging layer 20 is selected from a PET film, a PVC film, a PE film, a PI film, a composite film formed by nonmetal and nonmetal, a composite film formed by metal and nonmetal, and the like.
The first current collector 40 or the second current collector 70 is selected from a printed carbon paste layer, a metal layer, or the like. Which serves to collect and transport electrons generated by the cell reaction.
The conductive connection layer 30 and the tab 31 are conductive material layers such as a printed carbon paste layer or a metal layer. The function is to connect the battery and the electric appliance. The conductive connection layer 30 may have a single-layer structure or a multi-layer structure, and may be any structure layer that can perform a conductive connection function between the electrode material and the tab.
The other tab 110 is a conductive material layer such as a printed carbon paste layer or a metal layer. The function is to connect the battery and the electric appliance.
The first electrode material layer 60 and the second electrode material layer 80 may be: the electrode material layer containing only the positive electrode (or negative electrode) main material may be an electrode material layer prepared by mixing a plurality of components simultaneously containing the "positive electrode (or negative electrode) main material+auxiliary agent", for example: positive electrode (or negative electrode) host material, conductive agent, binder, electrolyte, and the like.
The material of the separator electrolyte layer 90 may be polymer fiber paper or plant fiber paper or composite paper or slurry layer paper composed of polymer fiber and plant fiber, and the porous insulation feature of the separator electrolyte layer may make the separator electrolyte layer absorb and retain electrolyte, provide channels for ion transmission, insulate cathode and anode to prevent short circuit, and the like.
The sealant layer 100 may be an adhesive layer, or may be a hot melt adhesive layer formed by heating and melting the first encapsulation layer 10 and the second encapsulation layer 20 and by pressure, and the adhesive layer may be a printing adhesive, a double sided adhesive, a pressure sensitive adhesive, a hot melt adhesive, or the like.
It should be understood by those skilled in the art that the present utility model may be embodied in many different forms without departing from the spirit or essential characteristics thereof.
Claims (7)
1. A flexible battery comprises a first packaging layer and a second packaging layer which are oppositely arranged; the method is characterized in that:
the inner surface of the first packaging layer is provided with a conductive connecting layer and a first current collector in parallel, the conductive connecting layer and the first current collector are arranged at intervals, and one side surface of the first current collector, which faces the second packaging layer, is provided with a first electrode material layer; the inner surface of the second packaging layer is provided with a second current collector, the conductive connecting layer and the first electrode material layer are arranged together and correspond to the second current collector, the conductive connecting layer is attached to the second current collector, one side surface of the second current collector, which faces the first packaging layer, is provided with a second electrode material layer, the second electrode material layer is positioned at the side of the conductive connecting layer and corresponds to the first electrode material layer, and a diaphragm electrolyte layer is arranged between the first electrode material layer and the second electrode material layer;
one end part of the conductive connecting layer is used as a tab; one end of the first current collector is connected with another tab, and the other tab is arranged on the inner surface of the first packaging layer.
2. A flexible battery as defined in claim 1, wherein: and a sealant layer is arranged between the first packaging layer and the second packaging layer, the sealant layer comprises an annular peripheral part, and the peripheral part surrounds the conductive connecting layer and the first current collector.
3. A flexible battery as defined in claim 2, wherein: the sealant layer also includes a strip-shaped intermediate separator located within the peripheral portion that is located between the conductive connection layer and the first current collector to completely separate the two.
4. A flexible battery as defined in claim 1, wherein: the other tab is a section of the first current collector extending from the inner surface of the first packaging layer to the one end along the first current collector.
5. A flexible battery as defined in claim 2, wherein: and the diaphragm electrolyte layer is fixedly connected with the sealant layer.
6. The utility model provides a connection structure of flexible battery and electrical apparatus, electrical apparatus is film electrical apparatus, its characterized in that: the flexible battery is the flexible battery of any one of claims 1-5, the thin film electric appliance is arranged on a first packaging layer of the flexible battery, and positive and negative power connectors of the thin film electric appliance are positioned on the same surface of the first packaging layer and correspondingly contacted and connected with one tab and the other tab of the flexible battery to form a current loop.
7. The connection structure of a flexible battery and an electric appliance according to claim 6, wherein: the first packaging layer of the flexible battery and the film substrate of the film electric appliance are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320625071.5U CN219457792U (en) | 2023-03-27 | 2023-03-27 | Flexible battery and connection structure of flexible battery and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320625071.5U CN219457792U (en) | 2023-03-27 | 2023-03-27 | Flexible battery and connection structure of flexible battery and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219457792U true CN219457792U (en) | 2023-08-01 |
Family
ID=87412423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320625071.5U Active CN219457792U (en) | 2023-03-27 | 2023-03-27 | Flexible battery and connection structure of flexible battery and electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219457792U (en) |
-
2023
- 2023-03-27 CN CN202320625071.5U patent/CN219457792U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6528204B1 (en) | Lithium secondary battery comprising individual cells with one another, as well as watches, computers and communication equipment provided with a battery | |
| CN101194385B (en) | Galvanic cell | |
| CN209981369U (en) | Cylindrical battery | |
| CN106159179A (en) | Metal lithium battery | |
| CN216213939U (en) | Battery cell, battery and electronic equipment | |
| US20230238666A1 (en) | Electrochemical device and electronic device | |
| WO2024078336A1 (en) | Pole piece, electrochemical device, and electronic device | |
| WO2020177599A1 (en) | Secondary battery | |
| CN209232841U (en) | Soft pack cell battery modules and battery pack | |
| KR20010091959A (en) | Solid electrolyte battery and production method thereof | |
| CN207602676U (en) | Lug, battery core and soft bag lithium ionic cell | |
| WO2013100493A1 (en) | Surface mounted super capacitor | |
| KR20040005243A (en) | Battery unit and the lithium secondary battery applying the same | |
| CN219457792U (en) | Flexible battery and connection structure of flexible battery and electric appliance | |
| CN116169404A (en) | Flexible battery and connection structure of flexible battery and electric appliance | |
| EP3703160A1 (en) | Secondary battery | |
| CN214898789U (en) | Battery module assembly and battery module | |
| CN220042235U (en) | Battery cell, battery and electric appliance capable of preventing tab from being reversely inserted | |
| CN216213628U (en) | Thin battery | |
| CN220569692U (en) | Battery piece subassembly and have its photovoltaic module | |
| CN220021204U (en) | Solid-state battery cell | |
| CN218586283U (en) | Battery cell, battery and electric equipment | |
| CN219226552U (en) | Electrode lug welding structure, middle-arranged battery cell and battery | |
| CN210628417U (en) | Flexible battery | |
| CN217035917U (en) | Ultrathin flexible energy storage device with positive and negative electrode lugs on same surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |