CN106997809B - Electric double layer device - Google Patents
Electric double layer device Download PDFInfo
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- CN106997809B CN106997809B CN201610048460.0A CN201610048460A CN106997809B CN 106997809 B CN106997809 B CN 106997809B CN 201610048460 A CN201610048460 A CN 201610048460A CN 106997809 B CN106997809 B CN 106997809B
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/80—Gaskets; Sealings
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The invention discloses a kind of electric double layer devices, the electric double layer device be configured such that by with from top collector plate directly extract upper terminal in a manner of identical mode from lower part collector plate directly extract lower terminal, thus to improve the simplicity of productivity and assembling, attachment force is furthermore also increased.
Description
Technical field
The present invention relates to electric double layer (electric double layer) device, more particularly, to being constructed such that
By with from top collector plate directly extract upper terminal in a manner of identical mode from lower part collector plate directly extract lower part
The electric double layer device of terminal increases attachment force, and the equivalent electricity inside reduction so as to improve the convenience of productivity and assembling
The discharging efficiency during heavy-current discharge is improved while resistance.
Background technique
In general, electric double layer device is the device that battery, capacitor or electrolytic capacitor etc. are used to store electric energy.Double electricity
Layer device is charged and discharged using conductive electrode.Electric double layer device be used for mobile phone, GPS receiver, MP3 player and
Backup of memory.In addition, electric double layer device is also used for wind energy system, solar energy system and electric car and hybrid electric
The motor of vehicle.
Electric double layer is such layer: it is configured so that positive charge is continuously arranged in a table of the film layer of object
On face, and negative electrical charge is continuously arranged on another surface of the film layer, or makes two of the film layer
Surface superficial density having the same.Typically, electric double layer is the bilayer for including electric dipole.In general, charge is in different materials
Between interface rearrange, electric double layer is consequently formed.
The interface quilt of cation or anion between solid state electrode and liquid water electrolyte in liquid water electrolyte
It selectively adsorbs, surface of solids molecule is dissociated, or cation or anion are adsorbed in dipole sub-interface, thus shape
At electric double layer.The layer is referred to as helmholtz layer (Helmholtz layer).
This electric double layer is various with electrode reaction, the stability of electrokinetic phenomenon (electrophoresis) and colloid etc.
Electrochemical surface phenomenon is closely related.
One example of this electric double layer device can be capacitor.
In double layer capacitor, electrostatic layer is formed in the interface between activated carbon electrodes and organic electrolyte, and
Electric double layer state play the role of it is dielectric, thus be used in a manner of identical with battery cumulative power.
Specifically, the electricity using accumulation in the electric double layer being formed between solid electrode and solid-state or liquid electrolyte
Lotus.
Capacitor has the energy density lower than battery.However, for power density (that is, moment height exports), capacitor
Device is better than battery.In addition, capacitor is able to use hundreds of thousands of times.That is, the service life of capacitor is semipermanent.
For these reasons, capacitor is used for various fields.
Double layer capacitor works according to following principle.In the shape being placed on solid electrode in electrolytic ion solution
Under state, when DC voltage is applied to a pair of of solid electrode, anion is to electrostatically attracted to the electrode that polarization is positive electrode, sun
Ion is to electrostatically attracted to the electrode that polarization is negative electrode.Therefore, the interface between each electrode and electrolyte forms double
Electric layer.Particularly, active carbon has a large amount of hole.Thus, it is easy to form electric double layer.1 pair of quilt of following equation can be used
The capacitor of storage charge is calculated.
[equation 1]
Wherein, ε0Indicate that the dielectric constant of air, ε indicate that the dielectric constant of electrolyte, σ indicate the radius of electrolytic ion,
And the specific surface area of S expression electrode.
Determine that the factor of the capacity of double layer capacitor is as follows.Such as from aforesaid equation 1 as can be seen that the specific surface of electrode
Product is bigger, and the dielectric constant of electrolyte is bigger, and the radius of the ion during forming bilayer is smaller, it will be able to obtain bigger appearance
Amount.In addition, capacitor is also determined by the distribution in the hole in the internal resistance of electrode, electrode and relationship, interior voltage of electrolytic ion etc..
Double layer capacitor includes electrode, separator, electrolyte, collector and shell.
When constructing capacitor, the selection of electrode material is mostly important.However, the capacitor of capacitor can be each because of capacitor
It plants other components and changes.
Electrode material must have high electric conductivity and big specific surface area.In addition, electrode material must have electrochemistry
Stability.
Another example of this electric double layer device can be battery.
Battery is will to be stored in the change being contained in battery by electrochemical redox reaction (redox reaction)
Learn the device that the chemical energy in material (that is, active material) is converted into electric energy.
Battery is made of the sub-assembly of more than two electrochemical cells.Alternatively, battery can be made of single pond.Battery
It is constructed such that electronics flows to external because of electrochemical reaction (due to chemically non-reactive) along conducting wire.The electricity flowed along conducting wire
Son becomes the source of electric energy, thus is available in terms of electricity.
More specifically, battery has positive electrode (anode) active material being coated on collector and negative electrode (cathode) living
Property material.Positive electrode and negative electrode are separated from one another by separator.In addition, positive electrode and negative electrode are comprised in and enable ion
In enough electrolyte shifted between two electrodes.
In order to operate electric light, device, instrument etc., it is necessary to electrode material and electrolyte are properly selected and arrange, to have
So that the specific structure of enough voltage and currents can be generated between two electrodes of battery.
For example, positive electrode, negative electrode, electrolyte and separator are necessarily arranged to so that based on mutual between them
It acts on and chemical energy is converted into electric energy, wherein the active positive electrode material of positive electrode is received from the electronics of outer lead
Reduction, the negative electrode active material of negative electrode are oxidized with by electron emission to conducting wire, electrolyte so that material is moved so that
The reduction reaction of positive electrode and the oxidation reaction of negative electrode are that chemistry is coordinated, and separator prevent positive electrode and negative electrode it
Between physical contact.
The negative electrode for the battery being arranged as described above substantially launching electronics when being oxidized, and positive electrode is in quilt
Electronics (and cation) is received when reduction.When battery operates in the state of connecting with external loading, two electrodes are therefore
And electrochemical change occurs, and thus carrying out electrical installation.
At this point, the electronics generated by the oxidation reaction of negative electrode is moved to positive electrode via external loading, and with just
Reduction reaction occurs for electrode active material.Then, due to anion (anion) and cation (cation) court in the electrolyte
The movement of negative electrode and positive electrode, complete the flowing of charge.
In this way, it is reacted in the electrolyte so that charge continuously flows in outer lead, and utilizes
The charge carries out electrically operated.
Cell classification can be liquid electrolyte battery or polymer electrolyte battery by the type based on electrolyte.It is logical
Often, liquid electrolyte battery is referred to as lithium ion battery, and polymer electrolyte battery is referred to as lithium polymer battery.
Fig. 1 is to show the schematic diagram of the structure of general electric double layer device；Fig. 2 is illustrated to applied to general electric double layer
The schematic diagram for the principle that the double layer capacitor of device charges；And Fig. 3 is to illustrate to fill to applied to general electric double layer
The double layer capacitor set carries out the circuit diagram of the principle of charge and discharge.
As shown in Figure 1, general electric double layer device includes electrode 10b, electrolyte 20a, collector 30a, separator 40a, the
One lead terminal 61a and the second lead terminal 62a.
Assuming that electric double layer device is battery, the chemical energy of chemical material (that is, active material) therein passes through electrochemistry
Redox reaction (redox reaction) is converted into electric energy, and the electrode 10b being arranged on collector 30a has conduct
The positive electrode and negative electrode of active material.
Another invention is carried out more specifically based on characteristic of the hypothesis that electric double layer device is capacitor to electric double layer device
It is bright, utilize the positive charge and negative electrical charge of the interface between two Different electrodes 10b arranged in short distance apart
Distribution carry out storage energy, capacitor as unit of farad is high, and the variation of the performance in its repeated charge-discharge cycles and
It deteriorates very low.
Electrode 10b is made of the active carbon with bigger serface, and is stored in the charge generated at electric double layer, described
Electric double layer is arranged in the interface with electrolyte 20a.Among the electrical characteristics of electrode 10b, capacitor and internal resistance are to assess its performance
Most important standard.Therefore, electrode 10b necessarily exhibits low-resistivity and has porous structure.It is small in porous structure
The size in hole and distribution must simple and deviations within a predetermined range.The material property of electrode 10b is to double layer capacitor
Intrinsic charge-discharge characteristic has most strong influence.
Therefore, in recent years, large specific surface area is mainly used and material of the cheap active charcoal class material as electrode 10b,
And more and more researchs have been carried out using metal oxide and conducting polymer to for augmenting ability density.
Meanwhile using organic solvent, quaternary ammonium salt (organic) or sulfuric acid solution (aqueous solution) as electrolyte 20a.For
Organic solvent electrolyte can be with estimated rate mixed polycarbonate (PC) and methyl ethyl carbonate (EMC) in order to improve electric conductivity
Or mix PC and dimethoxy-ethane (DME).
Per unit area capacitor using the double layer capacitor 100a of organic electrolyte is 4 6/cm2.Organic electrolysis
The electric conductivity of liquid is higher than the electric conductivity of water electrolysis liquid.Thus, use the per unit face of the double layer capacitor 100a of water electrolysis liquid
Product capacitor is 5-10/cm2, this is higher than the per unit area capacitor of the double layer capacitor 100a using organic electrolyte.So
And it is that electrochemical window is narrow and can decompose using the problem of double layer capacitor 100a of water electrolysis liquid.
Use non-woven fabrics, porous polyethylene (PE) or polypropylene (PP) film as separator 40a.
The principle to charge to double layer capacitor is as follows.As shown in Figure 1, two electrode 10b are located in separator 40a
It is relatively arranged in the state of between the two with electrolyte 20a.The schematic diagram of the principle of double layer capacitor charging as shown
Fig. 2 shown in, in the state of not being externally supplied electric energy, double layer capacitor be in wherein charge be unevenly distributed dissipate
Random state (bulk state).Therefore, the potential difference between electrode 10b becomes 0.When being externally supplied electric energy, such as show
Shown in Fig. 3 of the circuit diagram of the principle of double layer capacitor charge and discharge, charge is uniformly distributed in double layer capacitor.Therefore, such as
Shown in Fig. 2, have and 2 Φ of potential difference1The energy of corresponding voltage is charged between two electrode 10b.
At this point, even if the electric double layer formed will not disappear when electric energy is supplied and interrupted, therefore can keep being filled with
Electric energy.
Relevant technical literature 1(10-2008-0044054:Module type electric double layer
Capacitor and method of manufacturing the same(modular type double layer capacitor and its manufacturer
Method))
Fig. 4 shows the manufacturing method of the double layer capacitor according to relevant technical literature 1；Fig. 5 is illustrated according to correlation
The manufacturing method of the integrated double layer capacitor of technical literature 1；And Fig. 6, which is shown, to be constituted according to the double of relevant technical literature 1
The manufacturing method of the electrode assembly of electric layer capacitor.
In general, being able to carry out the secondary cell of charge and discharge (for example, such as electrolytic capacitor or electrochemical double layer capacitor
(EDLC) energy storage device) it is configured to takeup type structure, for example, film type structure.
As shown in figure 4, the takeup types energy storage device such as takeup type electrochemical double layer capacitor is generally included by aluminium
(Al) cylindrical housings 20b made of the and winding device 10c being mounted in shell 20b.
Winding device 10c is formed in the following way: by strip-form electrode stack (that is, setting between positive and negative electrode device
It is equipped with the positive and negative electrode device of electrolyte) it is wound into cylinder and to tie up the outside of the strip-form electrode stack described to prevent
Strip-form electrode stack unwinding.
The winding device 10c formed as described above is impregnated by electrolyte, and is mounted in cylindrical housings 20b.It is winding
Terminal board 30b is installed above device 10c, and lug type or bolt type external terminal 40b are fastened to terminal board 30b.
In addition, on the top of shell 20b to be pressed into neck of the state formation for preventing terminal board 30b to be pushed downwards
21a.After forming neck 21a in shell 20b, winding device 10c is installed into shell 20b.Winding device 10c warp
External terminal 40b is electrically connected to by terminal 120.Then, the upper end 22b of shell 20b is crimped.Terminal board 30b is fixed on as a result,
In shell 20b, and complete assembling process.
Referring to the top of Fig. 6, electrode assembly 100b includes the electrode collector plate 111 made of general aluminium foil and is applied to
The electrode active material 112 of collector plate 111.
Electrode active material 112 is formed by applying the mainly conductive paste comprising active carbon.
Terminal 120 is bonded to electrode assembly 100b.Specifically, engaging with terminal 120 for electrode assembly 100b is scraped
Partially to remove the electrode active material 112 of the part, drill to the wiper of electrode assembly 100b, and pass through riveting
Terminal 120 is bonded to the bore portion of electrode assembly 100b.
Present applicant improves electric double layer device with the above characteristics, and proposes improved double electricity
Layer device is as the present invention.
Relevant technical literature 2(10-2013-0065485:Electric double layer device and wound
Unit for the same(electric double layer device and the winder unit for electric double layer device))
Fig. 7 is to show the exploded perspective view of the electric double layer device according to relevant technical literature 2；Fig. 8 is to show basis
The sectional view of the electric double layer device of relevant technical literature 2；Fig. 9 a is to show filling for electric double layer according to relevant technical literature 2
The plan view for the winder unit set；And Fig. 9 b is the winding for electric double layer device shown according to relevant technical literature 2
The half section figure of unit.
As shown in Fig. 7 to Fig. 9 b, the electric double layer device according to relevant technical literature 2 includes winder unit 10d and shell
20c.Wherein, winder unit 10d include the first collector 11a for being wound while separated from one another by separator 10e and
Second collector 12a；There is shell 20c upper opening 21b and lower capping 22c, winder unit 10d to be put by upper opening 21b
Enter.
More specifically, further comprising according to the electric double layer device of relevant technical literature 2 as shown in Fig. 7 to Fig. 9 b: under connect
Fishplate bar 31a is connected to the first collector 11a of winder unit 10d；Lower insulation plate 32 is accommodating the same of lower connecting plate 31a
When be placed on lower capping 22c；Connect core 40c, connection core 40c along winder unit 10d center setting in the state of to
It upper exposing and connects core 40c and is connected to lower connecting plate 31a；One terminal 50a', from being connected to the second of winder unit 10d
The top collector plate 50a of collector 12a is upwardly extended, and there is top collector plate 50a centre bore 51a, connection core 40c to pass through center
Hole 51a extends；Upper insulation plate 60a is mounted on top collector plate 50a(other than terminal 50a') on, upper insulation plate 60a tool
There are through-hole 61b, connection core 40c to extend across through-hole 61b；And another terminal 70a, it is connected to the upper end of connection core 40c
Portion, another terminal 70a are separated and upwardly extend with a terminal 50a'.
Connection core is vertically connected to lower connecting plate 31a, and lower connecting plate 31a is connected to the first collector 11a, and another
A terminal 70a is connected to connection core 40c and is extracted.Top collector plate 50a is connected to the second collector 12a, and one
Terminal 50a' is extracted.One terminal 50a' and another terminal 70a are drawn up.
In addition, including: the first collector 11a according to the winder unit 10d for electric double layer device of relevant technical literature 2
With the second collector 12a, the two is wound while separated from one another by separator 10e；Lower connecting plate 31a, is connected to
First collector 11a；Core 40c is connected, connection core 40c is erect along the center of the first collector 11a and the second collector 12a
In the state of expose upwards and connect core 40c and be connected to lower connecting plate 31a, the first collector 11a and the second collector 12a and exist
It is wound while separated from one another by separator 10e；And a terminal 50a', from being connected to the of winder unit 10d
The top collector plate 50a of two collector 12a upwardly extends, and there is top collector plate 50a centre bore 51a, connection core 40c to pass through
Heart hole 51a extends.
One terminal 50a' can be upwardly extended from top collector plate 50a and can be then bent.Another terminal 70a
It can connect to the upper end of connection core 40c, so that another terminal 70a is separated with a terminal 50a'.In addition, another
Terminal 70a can be upwardly extended and can be then bent.
In the state of connecting center setting of the core 40c along the first collector 11a, lower connecting plate 31a is connected to winding
The first collector 11a of unit 10d, such as the negative electrode of the first collector 11a is mentioned upwards by connecting core 40c
It takes.
From the top top collector plate 50a(collector plate 50a there is centre bore 51a, connection core 40c to wear in a terminal 50a'
Cross centre bore 51a extension) upwardly extend in the state of, a terminal 50a' is connected to the second collector of winder unit 10d
12a, such as the positive electrode of the second collector 12a is drawn up.Another terminal 70a connection while upwardly extending
To the upper end of connection core 40c, so that another terminal 70a is separated with a terminal 50a'.
At this point, upper insulation plate 60a is assembled to top collector plate 50a(other than terminal 50a') on, so that an end
Sub- 50a' exposes upwards.
May further include according to the electric double layer device of relevant technical literature 2: top nonconductive plate 80a is assemblied in
To cover upper opening 21b in shell 20c, top nonconductive plate 80a, which has, is respectively connected to another terminal 70a and a terminal
The first connection terminal 81 and second connection end 82 of 50a'.
However, in the electric double layer device according to relevant technical literature 2, since another terminal 70a is being upwardly extended
It is connected to the upper end of connection core 40c simultaneously, therefore the connection between another terminal 70a and connection core 40c is usually poor.It is special
Not, it needs to connect multiple components such as core 40c and another terminal 70a, this makes it difficult to be assembled and connected.Therefore,
The significant simplicity for reducing productivity and assembling.In addition, connection core 40c increases the weight of electric double layer device.
Relevant technical literature
Patent document
(patent document 1) relevant technical literature 1(10-2008-0044054:Module type electric double
Layer capacitor and method of manufacturing the same(modular type double layer capacitor and its system
Make method))
(patent document 2) relevant technical literature 2(10-2013-0065485:Electric double layer device
And wound unit for the same(electric double layer device and the winder unit for electric double layer device))
Summary of the invention
Therefore, the present invention is made that in view of problem above, and be configured to make the purpose of the present invention is to provide one kind
It is able to mode identical with the mode of upper terminal is directly extracted from top collector plate and directly extracts lower end from lower part collector plate
Furthermore the electric double layer device of son increases attachment force so as to improve the simplicity of productivity and assembling.
It is another object of the present invention to provide one kind to be configured such that directly from lower part collector plate to lower terminal
Thus the electric double layer device extracted improves the electric discharge effect during heavy-current discharge while reducing internal equivalent resistance
Rate.
It further comprise upper portion insulating ring, institute another object of the present invention is that providing a kind of electric double layer device
It states upper portion insulating ring to be configured to that lower terminal is made to be able to maintain the state that winder unit and shell are separated from each other, thus
Lower terminal is more safely isolated, additionally winder unit can be made to be easier to be inserted into shell.
According to the present invention it is possible to realize above and other purpose, the electric double layer by providing following electric double layer device
Device includes: winder unit comprising the first collector being wound while separated from one another by separator and the second collection
Flow device；Shell, with upper opening, the winder unit is accommodated in the shell by the upper opening；And lower capping,
Wherein, electric double layer device further comprises: lower part collector plate, is connected to first collector of the winder unit, institute
Stating lower part collector plate has the lower terminal upwardly extended along the periphery of the winder unit；Lower insulation plate, the lower insulation
Plate is arranged in lower capping to be used to accommodate the lower part collector plate；Top collector plate is connected to the institute of the winder unit
The second collector is stated, the top collector plate has the upper terminal upwardly extended；Upper insulation plate is assemblied in the upper-part centralized
So that the upper terminal and the lower terminal point up on battery plate；And top nonconductive plate, it is assemblied in described
To cover the upper opening in shell, the top nonconductive plate, which has, is respectively connected to the lower terminal and the upper end
The first connection terminal and second connection end of son.
Detailed description of the invention
According to the following detailed description in conjunction with attached drawing, above and other objects of the present invention, feature will be more clearly understood
And further advantage, in which:
Fig. 1 is to show the schematic diagram of the structure of general electric double layer device；
Fig. 2 is the signal for illustrating the principle to charge to the double layer capacitor for being applied to general electric double layer device
Figure；
Fig. 3 is the circuit for illustrating the principle that charge and discharge are carried out to the double layer capacitor for being applied to general electric double layer device
Figure；
Fig. 4 shows the manufacturing method of the double layer capacitor according to relevant technical literature 1；
Fig. 5 illustrates the manufacturing method of the integrated double layer capacitor according to relevant technical literature 1；
Fig. 6 illustrates the manufacturing method for constituting the electrode assembly of the double layer capacitor according to relevant technical literature 1；
Fig. 7 is to show the exploded perspective view of the electric double layer device according to relevant technical literature 2；
Fig. 8 is to show the sectional view of the electric double layer device according to relevant technical literature 2；
Fig. 9 a is to show the plan view of the winder unit for electric double layer device according to relevant technical literature 2；
Fig. 9 b is to show the half section figure of the winder unit for electric double layer device according to relevant technical literature 2；
Figure 10 is to show the exploded perspective view of electric double layer device according to the present invention；
Figure 11 a to 11k is to show the perspective view of the assembling process of electric double layer device according to the present invention；
Figure 12 is to show the sectional view of electric double layer device according to the present invention；
Figure 13 a is to show application according to the present invention in the plan view of the winder unit of electric double layer device；
Figure 13 b is to show application according to the present invention in the half section figure of the winder unit of electric double layer device；And
Figure 13 c is to show application according to the present invention in the expanded view of the winder unit of electric double layer device.
Specific embodiment
The exemplary implementation scheme of electric double layer device according to the present invention is described in detail with reference to the accompanying drawings.It can give
Multiple embodiments out.According to illustrating for following embodiments, the purpose of the present invention, feature and excellent will be more clearly understood
Point.
Figure 13 a is to show application according to the present invention in the plan view of the winder unit of electric double layer device, and Figure 13 b is to show
Application according to the present invention is gone out in the half section figure of the winder unit of electric double layer device, and Figure 13 c is shown according to this
The expanded view of the winder unit applied to electric double layer device of invention.
As shown in Figure 13 a to Figure 13 c, the winder unit 10 of application according to the present invention to electric double layer device is configured to have
Such as flowering structure: where the first collector 11 and the second collector 12 are wound into so that in the first collector 11 and the second collector
It is disposed between 12 in the state of separator 10a, the first collector 11 extends downwardly, and the second collector 12 upwardly extends.
For example, the first collector 11 can be negative electrode, the second collector 12 can be positive electrode.Alternatively, the first collector 11
It can be positive electrode, the second collector 12 can be negative electrode.
Figure 10 is to show the exploded perspective view of electric double layer device according to the present invention, and Figure 11 a is to show basis to 11k
The perspective view of the assemble method of electric double layer device of the invention, and Figure 12 shows electric double layer device according to the present invention
Sectional view.
As shown in Figure 10 to Figure 13 c, electric double layer device according to the present invention includes: winder unit 10 substantially comprising
By separator 10a the first collector 11 being wound while separated from one another and the second collector 12；Shell 20, with upper
Opening 21, winder unit 10 are received by opening 21；And lower capping 22.
More specifically, electric double layer device according to the present invention further comprises: it is single to be connected to winding for lower part collector plate 30
First collector 11 of member 10, lower part collector plate 30 have the lower terminal 31 upwardly extended along the periphery of winder unit 10；
Lower insulation plate 50 is placed in lower capping 22 to be used to accommodate lower part collector plate 30；Top collector plate 40 is connected to volume
Around the second collector 12 of unit 10, top collector plate 40 has the upper terminal 41 upwardly extended；Upper insulation plate 60, assembly
On top collector plate 40, so that upper terminal 41 and lower terminal 31 point up；And top nonconductive plate 70, pacified
For dress within the casing 20 to cover upper opening 21, top nonconductive plate 70, which has, is respectively connected to lower terminal 31 and upper terminal 41
The first connection terminal 71 and second connection end 72.
Lower terminal 31 is extracted from the lower part collector plate 30 for being connected to the first collector 11, and is upwardly extended.Therefore, and
The component of connection core and another terminal disclosed in relevant technical literature 2 etc. is not needed.Therefore, related skill can be omitted
The step of core is connected to lower connecting plate will be connected needed for art document 2 and another terminal is connected to the step of connection core
Suddenly, the simplicity of productivity and assembling is thus improved.In addition, in a manner of with the extraction upper terminal 41 from top collector plate 40
Identical mode extracts lower terminal 31 from lower part collector plate 30, thus prevents between lower terminal and lower part collector plate
Bad connection.Particularly, internal equivalent resistance is reduced, and improves the discharging efficiency during being large current discharge.
In addition, the first connection terminal 71 and second connection end 72 are by top nonconductive plate 70 and by more securely fixed
Thus the connection with external device (ED) is more successfully realized in position.
In addition, the winder unit 10 of electric double layer device according to the present invention be included in it is separated from one another by separator 10a
The first collector 11 and the second collector 12 being wound simultaneously.More specifically, lower terminal 31 is along the outer of winder unit 10
It upwardly extends in week and is bent, to be disposed in 60 top of upper insulation plate, is then bent upwards again to be connected to the first company
Connecting terminal 71.There is through-hole 61, upper terminal 41 extends across the through-hole in upper insulation plate 60.Upper terminal 41 is from top current collection
Plate 40 upwardly extends, and extends through through-hole 61, is then curved to be connected to second connection end 72.
That is, lower terminal 31 and upper terminal 41 are directly mentioned from lower part collector plate 30 and top collector plate 40 respectively
It takes without being welded, which thereby enhances the simplicity of productivity and assembling, and increase the relay that is electrically connected.
Upper terminal 41 and lower terminal 31 can connect to the external dress such as mobile phone, GPS receiver or MP3 player
It sets.Alternatively, upper terminal 41 and lower terminal 31 can connect to wind energy system, solar energy system or electric car or
The motor of hybrid-power electric vehicle.
In addition, electric double layer device according to the present invention further comprises upper portion insulating ring 80, which is arranged
To be in close contact while being accommodated in the inner lower terminal 31 with the edge of upper insulation plate 60, so that lower terminal 31 can protect
The state that winder unit 10 and shell 20 are separated from each other is held, lower terminal 31 is thus more safely isolated.
Particularly, since so that lower terminal 31 is arranged to close with the edge of upper insulation plate 60 for upper portion insulating ring 80
Contact, therefore, winder unit 10 can be more easily inserted into shell 20.
Electric double layer device according to the present invention further comprises: first through hole 22a and the second through-hole 51, first through hole 22a
It is to be formed across the lower capping 22 of shell 20, the second through-hole 51 is across the formation of lower insulation plate 50, for use as electrolyte
Intake；Rubber stopper 91 is assembled in the top of first through hole 22a to seal first through hole 22a；And closing cock 92,
In its lower part for being assembled to first through hole 22a and it is soldered to the lower part of first through hole 22a.Closing cock 92 can be by aluminum
At.Therefore, in the state of will assemble within the casing 20 including whole components including winder unit 10, electrolyte is via first
Through-hole 22a and the second through-hole 51 are introduced into shell 20, are then sealed first through hole 22a, are which thereby enhanced productivity and group
The simplicity of dress.
Meanwhile electric double layer device according to the present invention may further include the edge for being arranged in top nonconductive plate 70
Curling rubber 93 so that by shell 20 crimp after seal upper opening 21, thus by the inner sealing of shell 20.
In addition, electric double layer device according to the present invention may further include flanging portion (beading part) 23, set
Top nonconductive plate 70 and shell 20 so that including upper terminal 41 and lower terminal 31 are set on the top of shell 20
Between stability maximize.
From described above it is readily apparent that according to the present invention, with directly extract upper terminal from top collector plate
The identical mode of mode directly extracts lower terminal from lower part collector plate, which thereby enhances the simplicity of productivity and assembling, this
Attachment force is increased outside.
According to the present invention, lower terminal is directly extracted from lower part collector plate, thus while reducing internal equivalent resistance
Improve the discharging efficiency during heavy-current discharge.
According to the present invention, electric double layer device further comprises upper portion insulating ring, is configured to that lower terminal is enable to protect
The state that winder unit and shell are separated from each other is held, thus more safely realizes the isolation of lower terminal.
According to the present invention, upper portion insulating ring enable lower terminal be arranged to the edge of upper insulation plate be in close contact,
Therefore winder unit can be more easily inserted into shell.
According to the present invention, in the state of being assembled whole components including winder unit in the housing, electrolysis
Liquid is introduced into shell via first through hole and the second through-hole, which thereby enhances productivity and operability.
The present invention can be applied to the neck that battery, capacitor and electrolytic capacitor etc. can store the device of electric energy
Domain.
Although disclosing the preferred embodiments of the invention for purpose of explanation, it should be appreciated by those skilled in the art that
, under the premise of without departing substantially from the scope and spirit of appended claims present invention disclosed, be able to carry out various modifications,
Addition and replacement.
Claims (4)
1. a kind of electric double layer device comprising:
Winder unit, the winder unit include the first collector being wound while separated from one another by separator and
Two collectors；
Shell, the shell have upper opening, and the winder unit is accommodated in the shell by the upper opening；And
Lower capping,
Wherein, the electric double layer device further comprises:
Lower part collector plate, the lower part collector plate are connected to first collector of the winder unit, the lower part current collection
Plate has the lower terminal upwardly extended along the periphery of the winder unit；
Lower insulation plate, the lower insulation plate are arranged in the lower capping to accommodate the lower part collector plate；
Top collector plate, the top collector plate are connected to second collector of the winder unit, the top current collection
Plate has the upper terminal upwardly extended；
Upper insulation plate, the upper insulation plate are assemblied on the top collector plate, so that the upper terminal and the lower end
Son points up；And
Top nonconductive plate, the top nonconductive plate are assemblied in the shell to cover the upper opening, and the top is non-
Conductive plate has the first connection terminal and second connection end for being respectively connected to the lower terminal and the upper terminal.
2. electric double layer device according to claim 1, wherein
The lower terminal is upwardly extended along the periphery of the winder unit, and lower terminal bending is to be arranged in
Above the upper insulation plate, and the lower terminal is bent upwards to be connected to first connection terminal,
There is through-hole in the upper insulation plate, the upper terminal extends across the through-hole, and
The upper terminal is upwardly extended from the top collector plate, extends through the through-hole, and be bent to be connected to
State second connection end.
3. electric double layer device according to claim 2, further comprises:
Upper portion insulating ring, the upper portion insulating ring are arranged in while being accommodated in the inner the lower terminal and described exhausted
The edge of listrium is in close contact, so that the lower terminal is able to maintain the winder unit and is separated from each other with the shell
State.
4. electric double layer device according to claim 1-3, further comprises:
First through hole and the second through-hole, the first through hole pass through the lower capping of the shell and are formed, and described second is logical
Hole passes through the lower insulation plate and is formed, and the first through hole and second through-hole are used as the intake of electrolyte；
Rubber stopper, the rubber stopper are assembled to the top of the first through hole to seal the first through hole；And
Closing cock, the closing cock are assembled to the lower part of the first through hole and are soldered to the lower part of the first through hole.
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| CN201610048460.0A CN106997809B (en) | 2016-01-25 | 2016-01-25 | Electric double layer device |
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| CN201610048460.0A CN106997809B (en) | 2016-01-25 | 2016-01-25 | Electric double layer device |
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| CN106997809B true CN106997809B (en) | 2018-12-04 |
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| CN102738498A (en) * | 2011-04-04 | 2012-10-17 | Sb锂摩托有限公司 | Secondary battery |
| CN102959662A (en) * | 2010-09-16 | 2013-03-06 | 新神户电机株式会社 | Method for producing electrode plate group unit for lithium-ion capacitor, and lithium-ion capacitor |
| CN104103802A (en) * | 2013-04-01 | 2014-10-15 | 三星Sdi株式会社 | Rechargeable secondary battery |
| KR20140143641A (en) * | 2013-06-07 | 2014-12-17 | 주식회사 네스캡 | Electric double layer device |
| CN105140459A (en) * | 2009-12-28 | 2015-12-09 | Jm能源股份有限公司 | Electricity-storage device |
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| CN105140459A (en) * | 2009-12-28 | 2015-12-09 | Jm能源股份有限公司 | Electricity-storage device |
| CN102959662A (en) * | 2010-09-16 | 2013-03-06 | 新神户电机株式会社 | Method for producing electrode plate group unit for lithium-ion capacitor, and lithium-ion capacitor |
| CN102738498A (en) * | 2011-04-04 | 2012-10-17 | Sb锂摩托有限公司 | Secondary battery |
| CN104103802A (en) * | 2013-04-01 | 2014-10-15 | 三星Sdi株式会社 | Rechargeable secondary battery |
| KR20140143641A (en) * | 2013-06-07 | 2014-12-17 | 주식회사 네스캡 | Electric double layer device |
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| CN106997809A (en) | 2017-08-01 |
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