CN202839892U - Electrical storage apparatus - Google Patents

Electrical storage apparatus Download PDF

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Publication number
CN202839892U
CN202839892U CN2011900003936U CN201190000393U CN202839892U CN 202839892 U CN202839892 U CN 202839892U CN 2011900003936 U CN2011900003936 U CN 2011900003936U CN 201190000393 U CN201190000393 U CN 201190000393U CN 202839892 U CN202839892 U CN 202839892U
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CN
China
Prior art keywords
storage battery
heating panel
electric energy
storage device
energy storage
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Expired - Lifetime
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CN2011900003936U
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Chinese (zh)
Inventor
稗田克彦
篠田智隆
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JSR Corp
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JSR Corp
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/10Multiple hybrid or EDL capacitors, e.g. arrays or modules
    • H01G11/12Stacked hybrid or EDL capacitors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/14Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H01G11/18Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78Cases; Housings; Encapsulations; Mountings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G11/00Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78Cases; Housings; Encapsulations; Mountings
    • H01G11/82Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6554Rods or plates
    • H01M10/6555Rods or plates arranged between the cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model relates to an electrical storage apparatus. The electrical storage apparatus 600 comprises a storage battery 10, a heat sink 30 arranged on the outer surface of the packing body of the storage battery 10, a shell 602 accommodating the storage battery 10 and the heat sink 30. An electrical storage unit provided with a positive pole, a negative pole and an electrolyte is accommodated in the packing body of the storage battery 10, and the heat sink 30 is contacted with an inner surface 603 of the shell 602.

Description

Electric energy storage device
Technical field
The utility model relates to a kind of electric energy storage device.
Background technology
The known storage battery that hermetic type is arranged, its structure are will to possess that the electricity accumulating unit of anodal and negative pole and electrolyte together are contained in package body inside and airtight.As the electricity accumulating unit of sealed rechargeable battery, adopted by barrier film with anodal and negative pole alternately the stacked form that obtains or by barrier film with form anodal and that the negative pole coiling obtains.In such electricity accumulating unit by increasing stacked number, winding number, thereby the high energy of seeking sealed rechargeable battery quantizes and high capacity.
When sealed rechargeable battery as described above discharges and recharges at short notice repeatedly, situation about raising because of heat savings temperature is arranged, also have the situation that causes performance degradation because of this high temperature.The high energy that particularly in recent years is accompanied by sealed rechargeable battery quantizes requirement, and it is large that thermal discharge also becomes.
For such problem, for example in TOHKEMY 2009-272048 communique in the disclosed technology, laminated film made battery case and the enclosed secondary battery that obtains is fixed in metal heating panel, thereby improved thermal diffusivity.
The utility model content
The problem that utility model will solve
But, along with energy and capacitance of storage become large, follow the thermal discharge that discharges and recharges to increase, and the maximization of storage battery, heat is easily accumulated in internal storage battery, therefore need to be than at present more effectively heat radiation.
The electric energy storage device that provides thermal diffusivity good is provided one of purpose of several execution modes of the present utility model.
For the scheme of dealing with problems
The utility model is finished in order to solve the above-mentioned problem of at least a portion, can realize by following execution mode or Application Example.
[Application Example 1]
In the form of electric energy storage device of the present utility model, it comprises: storage battery, be arranged at the package body outer surface of aforementioned storage battery heating panel, hold the housing of aforementioned storage battery and aforementioned heating panel, in aforementioned storage battery, have positive pole, negative pole and electrolytical electricity accumulating unit and be contained in the package body, aforementioned heating panel is contacted with the inner surface of aforementioned housing.
[Application Example 2]
In Application Example 1, be laminated with a plurality of aforementioned storage batterys and aforementioned heating panel, a plurality of aforementioned storage batterys are electrically connected.
[Application Example 3]
In the Application Example 2, aforementioned storage battery and aforementioned heating panel are alternately stacked, by clipping aforementioned storage battery among the adjacent aforementioned heating panel, the aforementioned heating panel of a slice contacts with the 1st inner surface of aforementioned housing, and the aforementioned heating panel of another sheet contacts from the 2nd inner surface different with aforementioned the 1st inner surface of aforementioned housing.
[Application Example 4]
In the Application Example 2, among a plurality of aforementioned storage batterys, sequential cascade according to the 1st storage battery, the 2nd storage battery, the 3rd storage battery and the 4th storage battery, configuring aforementioned heating panel between aforementioned the 1st storage battery and aforementioned the 2nd storage battery and between aforementioned the 3rd storage battery and aforementioned the 4th storage battery, aforementioned the 2nd storage battery and aforementioned the 3rd storage battery are spaced from each other by the space.
[Application Example 5]
In any example, further comprise the 1st fixed part and the 2nd fixed part of the inner surface that is connected in aforementioned housing in the Application Example 1 to 4, aforementioned storage battery is by aforementioned the 1st fixed part and aforementioned the 2nd fixed part clamping and fix.
[Application Example 6]
In the Application Example 5, aforementioned package body is by consisting of the 1st packing film and the 2nd packing film joint, aforementioned the 1st packing film and aforementioned the 2nd packing film have because aforementioned electricity accumulating unit is contained in aforementioned package body and cause heaving the flat outer surface that forms, and with aforementioned flat outer surface continuously and the inclined outer surface that has tilted with respect to aforementioned flat outer surface, aforementioned the 1st fixed part is arranged at the zone from aforementioned flat outer surface to aforementioned inclined outer surface of aforementioned the 1st packing film, and aforementioned the 2nd fixed part is arranged at the zone from aforementioned flat outer surface to aforementioned inclined outer surface of aforementioned the 2nd packing film.
[Application Example 7]
In the Application Example 6, aforementioned heating panel is arranged at the aforementioned flat outer surface of aforementioned the 1st packing film and the aforementioned flat outer surface of aforementioned the 2nd packing film, it is overlapping that aforementioned the 1st fixed part and the aforementioned heating panel that arranges in the aforementioned flat outer surface of aforementioned the 1st packing film do not have, and aforementioned the 2nd fixed part does not have overlapping with the aforementioned heating panel that aforementioned flat outer surface at aforementioned the 2nd packing film arranges.
[Application Example 8]
In the Application Example 6, aforementioned heating panel is arranged at the aforementioned flat outer surface of aforementioned the 1st packing film and the aforementioned flat outer surface of aforementioned the 2nd packing film, aforementioned the 1st fixed part is overlapping with the aforementioned heating panel that arranges in the aforementioned flat outer surface of aforementioned the 1st packing film, and aforementioned the 2nd fixed part is overlapping with the aforementioned heating panel that aforementioned flat outer surface at aforementioned the 2nd packing film arranges.
[Application Example 9]
In any example, the thickness of the thickness of aforementioned the 1st fixed part and aforementioned the 2nd fixed part is greater than the thickness of aforementioned heating panel in the Application Example 5 to 8.
[Application Example 10]
In any example, the material of aforementioned housing is aluminium in the Application Example 1 to 9.
[Application Example 11]
In the Application Example 1 to 10 in any example, further comprise be arranged at aforementioned package body and with the aforementioned anodal positive terminal that is electrically connected and the negative terminal that is arranged at aforementioned package body and is connected with aforementioned negative electricity, aforementioned heating panel and aforementioned positive terminal and aforementioned negative terminal do not have overlapping.
[Application Example 12]
In any example, aforementioned electricity accumulating unit is lithium-ion capacitor in the Application Example 1 to 11.
The effect of utility model
According to electric energy storage device of the present utility model, heating panel is contacted with the inner surface of housing.Thus, electric energy storage device of the present utility model can pass to housing with the heat that produces in the storage battery by heating panel, dispels the heat from housing.Therefore, electric energy storage device of the present utility model can have high thermal diffusivity.
Description of drawings
Fig. 1 is the schematic isometric of the electric energy storage device of expression present embodiment.
Fig. 2 is the schematic diagram of the electric energy storage device of expression present embodiment.
Fig. 3 is the schematic diagram of the electric energy storage device of expression present embodiment.
Fig. 4 is the schematic diagram of the part of the electric energy storage device of expression present embodiment.
Fig. 5 is the schematic diagram of the part of the electric energy storage device of expression present embodiment.
Fig. 6 is the schematic diagram of the part of the electric energy storage device of expression present embodiment.
Fig. 7 is the schematic diagram of the part of the electric energy storage device in the 1st variation of expression present embodiment.
Fig. 8 is the schematic diagram of the part of the electric energy storage device in the 1st variation of expression present embodiment.
Fig. 9 is the schematic diagram of the part of the electric energy storage device in the 2nd variation of expression present embodiment.
Figure 10 is the schematic diagram of the part of the electric energy storage device in the 2nd variation of expression present embodiment.
Figure 11 is the schematic diagram of the electric energy storage device in the 3rd variation of expression present embodiment.
Figure 12 is the schematic diagram of the electric energy storage device in the 3rd variation of expression present embodiment.
Figure 13 is the schematic diagram of the electric energy storage device in the 4th variation of expression present embodiment.
Figure 14 is the schematic diagram of the electric energy storage device in the 4th variation of expression present embodiment.
Figure 15 is the schematic diagram of the electric energy storage device in the 5th variation of expression present embodiment.
Figure 16 is the schematic diagram of the electric energy storage device in the 5th variation of expression present embodiment.
Figure 17 is the schematic diagram of the part of the electric energy storage device in the 5th variation of expression present embodiment.
Figure 18 is the schematic isometric of the part of the electric energy storage device in the 5th variation of expression present embodiment.
Figure 19 is the schematic diagram of the electric energy storage device in the 5th variation of expression present embodiment.
Figure 20 is the schematic diagram of the electric energy storage device in the 5th variation of expression present embodiment.
Figure 21 is the schematic diagram of the electric energy storage device in the 6th variation of expression present embodiment.
Embodiment
Below, Yi Bian with reference to accompanying drawing preferred implementation of the present utility model is described on one side.
1. electric energy storage device
At first, the electric energy storage device of present embodiment described.Fig. 1 is the schematic isometric of the electric energy storage device 600 of expression present embodiment.Fig. 2 is the schematic diagram of the electric energy storage device 600 of expression present embodiment.Fig. 3 is the schematic diagram of the electric energy storage device 600 of expression present embodiment, and is the figure that observes from the III direction of Fig. 2.Be explained, Fig. 2, Fig. 3 are the figure that housing 602 perspectives of Fig. 1 are seen.
Such as Fig. 1 ~ shown in Figure 3, electric energy storage device 600 can comprise housing 602, storage battery 10, be arranged at the positive terminal 20 of storage battery 10 and negative terminal 22, heating panel 30, outside terminal 604,606.
Storage battery 10 and heating panel 30 are contained in the housing 602.The quantity of storage battery 10 and heating panel 30 is not particularly limited, but in example shown in Figure 2, is provided with 4 storage batterys 10 and 5 heating panels 30.Storage battery 10 and heating panel 30 are alternately stacked and configure.More specifically, according to the order setting of storage battery 10a, storage battery 10b, storage battery 10c, storage battery 10d, dispose heating panel 30 according to the mode that clips each storage battery.
In the example shown in Figure 2, a plurality of storage batterys 10 are connected in series.Thus, electric energy storage device 600 can increase output voltage.More specifically, the negative terminal 22 of storage battery 10a is electrically connected with the positive terminal 20 of storage battery 10b, the negative terminal 22 of storage battery 10b is electrically connected with the positive terminal 20 of storage battery 10c, and the negative terminal 22 of storage battery 10c is electrically connected with the positive terminal 20 of storage battery 10d.For example being electrically connected between positive terminal 20 and the negative terminal 22 undertaken by the wiring 608 of conductivity.Be explained, although not shown, a plurality of storage batterys 10 also can be connected in parallel.Can increase output current by being connected in parallel.
Be explained, in example shown in Figure 2, be provided with 4 storage batterys 10, but its quantity is not particularly limited, a storage battery 10 for example can be set, storage battery 10 more than 4 also can be set, can be according to as the output voltage of target or output current and set its quantity in good time.
If housing 602 its inside can hold storage battery 10, terminal 20,22 and heating panel 30, its shape is not particularly limited so, but is quadrangular (cuboid) in example shown in Figure 1.As the material of housing 602, for example list aluminium.Thus, can be by heating panel 30 with the heat that produces in the storage battery 10 from housing 602 heat radiations (see below in detail and state).
Also can form air cooling end 610 and exhaust portion 612 in the housing 602.In example shown in Figure 1, air cooling end 610 is formed at the bottom surface (lower surface) of housing 602, and exhaust portion 612 is formed at the upper surface (with the face of bottom surface subtend) of housing 602.Air cooling end 610 preferably configures according to the mode that can cool off all a plurality of heating panels 30.In addition, in example shown in Figure 1, air cooling end 610 and exhaust portion 612 respectively form respectively two, but its quantity is not particularly limited.More specifically, air cooling end 610 is for air being delivered to heating panel 30 or the hot link fan in the heat sink (not shown) of heating panel 30, exhaust portion 612 be for Bas Discharged to the outer through hole of housing 602.Thus, heating panel 30 or hot link can be cooled off in the heat sink of heating panel 30, can improve thermal diffusivity.
Outside terminal 604,606 prolongs to the outside from the inboard of housing 602 and arranges.In example shown in Figure 2, outside terminal 604 is electrically connected with the positive terminal 20 of storage battery 10a by wiring 608.In addition, outside terminal 606 is electrically connected with the negative terminal 22 of storage battery 10d by wiring 608.As outside terminal 604,606 material, for example list aluminium, copper, nickel.
As shown in Figure 3, heating panel 30 is contacted with the inner surface (side) 603 of housing 602.In example shown in Figure 3, heating panel 30 is contacted with two inner surfaces 603 of housing 602.Thus, can the heat that produce in the storage battery 10 be transmitted to housing 602 by heating panel 30, from housing 602 heat radiations.For example can more improve thermal diffusivity by cooling housing 602.That is, heating panel 30 also can be used as for the heat that will be produced by storage battery 10 (electricity accumulating unit 18) and brings into play function to the hot channel of housing 602 conduction.Therefore, electric energy storage device 600 can have high thermal diffusivity.
Below, illustrate in greater detail the structure of storage battery 10, terminal 20,22, heating panel 30.Fig. 4 is the diagrammatic side view of the part of the electric energy storage device 600 of expression present embodiment.Fig. 5 is the schematic diagram of the part of the electric energy storage device 600 of expression present embodiment, and is the figure that observes from the V direction of Fig. 4.For convenient, Fig. 4 and Fig. 5 figure be shown with a storage battery 10, be arranged at one group of positive terminal 20 and negative terminal 22 of this storage battery 10, be arranged at a heating panel 30 of this storage battery 10.
Such as Fig. 4 and shown in Figure 5, storage battery 10 can have package body 12 and electricity accumulating unit 18.
Package body 12 within it section accommodates electricity accumulating unit 18.Can say by package body 12 makes electricity accumulating unit 18 airtight.Package body 12 can have the 1st packing film 14 and the 2nd packing film 16.For example, also can the 1st packing film 14 and the 2nd packing film 16 be engaged by thermo-compressed, consist of package body 12.
The 1st packing film 14 can have the face of the inboard of package body 12, i.e. flat inner surface 14a.The 2nd packing film 16 can have the face of the inboard of package body 12, i.e. flat inner surface 16a.Flat inner surface 14a, 16a also can be contained in package body 12 in electricity accumulating unit 18 be connected.Thereby flat inner surface 14a, 16a also can be described as because holding electricity accumulating unit 18 and cause package body 12 to heave the face that forms.That is, the flat shape of flat inner surface 14a, 16a also can be definite according to sticking out of the package body 12 that causes because of electricity accumulating unit 18.The flat shape of flat inner surface 14a, 16a is preferably rectangle, can be square or rectangle.In example shown in Figure 4, the flat shape of flat inner surface 14a, 16a is rectangle.
The 1st packing film 14 can have the 1st packing film 14 with flat inner surface 14a side be the face of opposition side, i.e. flat outer surface 14b, it is the outer surface of package body 12.The 2nd packing film 16 can have the 2nd packing film 16 with flat inner surface 16a side be the face of opposition side, i.e. flat outer surface 16b, it is the outer surface of package body 12.Also the flat shape with flat inner surface 14a, 16a is identical respectively for the flat shape of flat outer surface 14b, 16b.Flat outer surface 14b, 16b also can be described as because holding electricity accumulating unit 18 and cause package body 12 to heave the face that forms.
As packing film 14,16, for example use laminated film.Laminated film for example is made of metal level and the 1st resin bed and the 2nd resin bed that clip this metal level.As the material of metal level, for example list aluminium.As the material of the 1st resin bed, for example list PETG (PET), polytetrafluoroethylene (PTFE), polyamide-based resin.As the material of the 2nd resin bed, for example list ethylene-vinyl acetate copolymer resin (EVA), perhaps the olefine kind resin such as polyethylene, polypropylene.
Use in this wise the packing film 14,16 of film-form, and compare such as the situation of the package body (metal can etc.) that uses the hard that is formed by metal etc., can seek miniaturization and the lightness of storage battery 10.
Electricity accumulating unit 18 is contained in the package body 12.Electricity accumulating unit 18 has positive pole, negative pole and electrolyte.Further, electricity accumulating unit 18 also can have the barrier film that separates anodal and negative pole.Positive pole, negative pole and barrier film can have the shape of sheet.The winding type structure that electricity accumulating unit 18 also can be reeled and form for the positive pole that will configure by the sandwiched barrier film and negative pole.In addition, electricity accumulating unit 18 also can for anodal and negative pole by the sandwiched barrier film stacked cascade type structure that obtains alternately.As electricity accumulating unit 18, specifically can lithium-ion capacitor, lithium ion battery, double electric layer capacitor be shown example.Be explained, the explanation of the details of the positive pole, negative pole, electrolyte and the barrier film that consist of electricity accumulating unit 18 is narrated in the back.
The thickness T of storage battery 10 is preferably below the above 20mm of 4mm.When the thickness of storage battery was aforementioned range, for example, built-in electricity accumulating unit was in the situation of cascade type structure in the storage battery, can increase the stacked number of anodal and negative pole.In addition, built-in electricity accumulating unit is in the situation of winding type structure in the storage battery, can increase the winding number of anodal and negative pole.Its result, the formation of the electric energy storage device that the energy capacity that is intended at the utility model is large become simple.
In order to make energy capacity become large electricity accumulating unit is maximized, the thickness of storage battery then uprises because of the tendency of heat storage in internal storage battery that discharges and recharges in the generation of the inside of electricity accumulating unit during greater than 4mm, is difficult to effectively to external cooling.Its result has the temperature of internal storage battery with the tendency of the degree rising of initiation γ-ray emission.Yet, make in order to obtain large energy the thickness of storage battery 10 become large situation under, by possessing the such heating panel 30 that contacts with inner surface 603 housing 602 of the application, also can effectively dispel the heat.For example, the thickness T of the storage battery 10 of lithium-ion capacitor is set in the situation of 8mm, and the energy capacity that can guarantee electricity accumulating unit 18 is more than the 1000F.In the case, although it is large to be derived from the heat dissipation capacity of electricity accumulating unit 18, in electric energy storage device 600 of the present utility model, can be by heating panel 30 and housing 602 with the heat that produces in storage battery 10 inside effectively to external cooling.
Be explained, in the situation that electricity accumulating unit 18 is winding type structure, the thickness T of storage battery 10 for example refers to be contained in the thickness of the storage battery 10 under the state in the package body 12.In addition, electricity accumulating unit 18 is in the situation of cascade type structure, for example refers to be contained in the size (length) of the stacked direction of the storage battery 10 under the state in the package body 12.As described above, electricity accumulating unit 18 also can contact with packing film 14,16 flat inner surface 14a, 16a.Therefore, also the thickness T of storage battery 10 can be made as distance between flat outer surface 14b and the flat outer surface 16b.
As shown in Figure 5, positive terminal 20 and negative terminal 22 pass package body 12 and arrange.Positive terminal 20 and negative terminal 22 prolong to the outside from the inboard of package body 12 under the state of the seal that keeps package body 12.The configuration of positive terminal 20 and negative terminal 22 is not particularly limited.In Fig. 4 and example shown in Figure 5, positive terminal 20 prolongs from the left end (end of a side) of package body 12, and negative terminal 22 prolongs from the right-hand end (end of opposite side) of package body 12.Positive terminal 20 is electrically connected with the positive pole of electricity accumulating unit 18.Negative terminal 22 is connected with the negative electricity of electricity accumulating unit 18.As the material of positive terminal 20, for example list aluminium.As the material of negative terminal 22, for example enumerate copper, nickel.
As shown in Figure 5, heating panel 30 is arranged at the outer surface of package body 12.In example shown in Figure 5, heating panel 30 is contacted with flat outer surface 14b and arranges.Although not shown, heating panel 30 also can be contacted with flat outer surface 16b and arrange.Heating panel 30 also can cover flat outer surface 14b or flat outer surface 16b whole and arrange.Can improve thermal diffusivity thus.
As shown in Figure 4 in side-looking the thickness direction of heating panel 30 (for example from), package body 12 for example is disposed at the inboard of the periphery of heating panel 30.That is, when side-looking, the area of heating panel 30 is greater than the area of package body 12.Thus, the surface area of heating panel 30 can be increased, thermal diffusivity can be improved.Be explained, positive terminal 20 and negative terminal 22 are projected into the outside and configure from the periphery of heating panel 30 when side-looking.Thus, can make terminal 20,22 and the ease of connection of outside wiring (not shown) carry out, can easily obtain electric currents from positive terminal 20.
As the material of heating panel 30, consider from the viewpoint of thermal conductivity, for example list aluminium, iron, copper, perhaps any one alloy as main component in these metals.Among these metals, consider particularly preferably aluminium from the viewpoint of lightness.
The shape of heating panel 30 is not particularly limited, but is tabular in Fig. 4 and the example shown in Figure 5.Although not shown, heating panel 30 also can have on its surface concavo-convex.Thus, the surface area of heating panel 30 can be increased, thermal diffusivity can be improved.
The thickness of heating panel 30 is preferably below the above 300 μ m of 10 μ m, more preferably below the above 200 μ m of 50 μ m.
Heating panel 30 can be with the heat heat radiation that is produced by electricity accumulating unit 18.In addition, it is all that heating panel 30 can be spread in electricity accumulating unit 18 equably with the heat that is produced by electricity accumulating unit 18, suppresses the intensification of locality.For example, in the situation of heat dissipation capacity greater than the heat dissipation capacity of end of the central portion of electricity accumulating unit 18, can make their heat radiation become even by heating panel 30.
The method that heating panel 30 is arranged at package body 12 is not particularly limited, and can use the method that the outer surface of the surface of heating panel 30 and package body 12 is bonding.More specifically can example illustrate: use thermal welding resin (ethylene-vinyl acetate copolymer resin, olefine kind resin etc.), the so high bonding agent of thermal conductivity of bonding agent (heat molten type bonding agent, moisture-curable bonding agent, pressure-sensitive bonding agent etc.) to carry out bonding method.In addition, the organic fillers such as mineral-type filler, epoxy resin such as boron nitride are mixed in bonding agent, thus the thermal conductivity of can further improve.Therefore, in the utility model, the structure of such cement between heating panel 30 and package body 12 is contained in also that heating panel 30 is contacted with the outer surface of package body 12 and in the example of the structure that arranges.Perhaps, also heating panel 30 and package body 12 hot melts can be applied, also can the crimping by pressing.Perhaps, also can pass through suitable anchor clamps (not shown), heating panel 30 is contacted with package body 12.Be explained, in the situation that use bonding agent, in order to improve thermal diffusivity, preferably except bonding plane, do not have bonding agent, only have bonding agent at bonding plane.
Below, the internal structure of storage battery 10 is described.Figure 6 shows that the cutaway view of a part of the electric energy storage device 600 of present embodiment, and be the schematic sectional view of (package body 12) internal structure of expression storage battery 10 shown in Figure 5.Be explained, in Fig. 6, in order conveniently to have omitted the diagram of heating panel 30.
As shown in Figure 6, electricity accumulating unit 18 has electrode duplexer 5 and the electrolyte (not shown) that is contained in package body 12.
Electrode duplexer 5 is immersed in electrolyte.Electrode duplexer 5 can have positive pole 1, negative pole 2 and barrier film 4.Positive pole 1, negative pole 2 and barrier film 4 have the shape of sheet.In illustrated example, about electrode duplexer 5, from the flat inner surface 16a of the 2nd packing film 16, stacked according to the order of negative pole 2, anodal 1, negative pole 2, anodal 1, negative pole 2, establish barrier film 4 and consist of being situated between between the utmost point and the utmost point and between the utmost point and the package body.In electrode duplexer 5, positive pole 1 and negative pole 2 are connected in parallel respectively.
Be explained, the quantity of positive pole 1 and negative pole 2 is not particularly limited.In addition, the form of electrode duplexer 5 is not defined as illustrated example, for example also can be for the overlapping laminated sheet that forms of positive pole, negative pole and barrier film, and the winding-structure body that this laminated sheet is reeled and formed.
As shown in Figure 6, anodal 1 has positive electrode collector 1a and positive electrode active material layer 1b.Positive electrode collector 1a can use the relevant known material of electric energy storage device with positive electrode active material layer 1b.As the material of positive electrode collector 1a, for example list aluminium, nickel, titanium.Positive electrode collector 1a also can be the porous metal forming that is made of aforesaid material.The thickness of positive electrode collector 1a is not particularly limited, and for example is below the above 50 μ m of 20 μ m.Positive electrode collector 1a is connected in positive terminal 20 by positive wire 6.
Positive electrode active material layer 1b is formed on the positive electrode collector 1a.Positive electrode active material layer 1b can be formed at the two sides of positive electrode collector 1a as shown in Figure 6, also can only be formed at single face.The thickness of positive electrode active material layer 1b is not particularly limited, and for example is below the above 90 μ m of 60 μ m.
Positive electrode active material layer 1b for example modulates slurry by pulverous positive active material, conductive auxiliary agent and binding agent (adhesive) are scattered in water kind solvent or the organic solvent, this slurry is coated the surface of positive electrode collector and drying, thereby form.
Electricity accumulating unit 18 is in the situation of lithium-ion capacitor or double electric layer capacitor, and positive active material is load hexafluorophosphate (PF reversibly 6 -), tetrafluoroborate (BF 4 -) material of such anion.More specifically, as positive active material, for example list active carbon, as the poly-acene class material (PAS) of the heat treatment thing of fragrant same clan condensation polymer.
Electricity accumulating unit 18 is in the situation of lithium ion battery, and positive active material is the material of occlusion lithium ion reversibly.More specifically, as positive active material, for example list lithium nickel type oxide, lithium-cobalt oxide, lithium manganese type oxide, ferric phosphate compounds and their mixture.
Be explained, " lithium nickel type oxide " refers to lithium (Li) and nickel (Ni) as the oxide that consists of metallic element, and except main (the 1st) transition metal is the oxide of Ni, the ratio (atomicity ratio) that also comprises being less than Ni comprise except Li and Ni other at least a metallic element (namely, the oxide of composition except Li and Ni, at least a in transition metal and the Main Group Metal Elements).As its metallic element, for example list Co, Al, Mn, Cr, Fe, V, Mg, Ti, Zr, Nb, Mo, W, Cu, Zn, Ga, In, Sn, La, Ce.These metallic elements can use separately, also can be two or more and use.Above content also is being same aspect lithium-cobalt oxide and the lithium manganese type oxide.
As conductive auxiliary agent, such as using the metal dusts such as material with carbon element, nickel by powder such as carbon black (acetylene black etc.).
As adhesive, such as using the cellulose families such as methylcellulose (MC), carboxymethyl cellulose (CMC), ethyl cellulose (EC), polyvinyl alcohol, polyacrylate, polyalkylene oxide (for example poly(ethylene oxide)), the fluorine-based polymers such as polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), polyvinylidene fluoride-hexafluoropropylene copolymer (PVDF-HFP), the organic polymers such as styrene butadiene block copolymer (SBR).
As shown in Figure 6, negative pole 2 has negative electrode collector 2a and negative electrode active material layer 2b.Negative electrode collector 2a can use the relevant known material of electric energy storage device with negative electrode active material layer 2b.As the material of negative electrode collector 2a, for example enumerate copper, nickel, titanium.Negative electrode collector 2a also can be the porous metal forming that is made of previous materials.The thickness of negative electrode collector 2a is not particularly limited, and for example is below the above 50 μ m of 20 μ m.Negative electrode collector 2a is connected in negative terminal 22 by negative wire 7.
Negative electrode active material layer 2b is formed on the negative electrode collector 2a.As shown in Figure 6, negative electrode active material layer 2b can be formed at the two sides of negative electrode collector 2a, also can only be formed at single face.The thickness of negative electrode active material layer 2b is not particularly limited, and for example is below the above 90 μ m of 60 μ m.
Negative electrode active material layer 2b for example modulates slurry by pulverous negative electrode active material, conductive auxiliary agent and binding agent (adhesive) are scattered in water kind solvent or the organic solvent, this slurry is coated the surface of negative electrode collector and drying, thereby form.
Electricity accumulating unit 18 is in the situation of lithium-ion capacitor or lithium ion battery, and negative electrode active material is the material of occlusion lithium ion reversibly.More specifically, as negative electrode active material, for example list native graphite, carbonaceous mesophase spherules (MCMB), highly oriented pyrolytic graphite (HOPG), hard carbon, soft carbon.
Electricity accumulating unit 18 is in the situation of double electric layer capacitor, and negative electrode active material for example is the material of load lithium ion reversibly.More specifically, as negative electrode active material, for example list active carbon.
Be explained, as conductive auxiliary agent and adhesive, can use the material of enumerating in the anodal explanation.
Barrier film 4 can use the porous material that has durability with respect to electrolyte, positive active material and negative electrode active material.Barrier film 4 can use the relevant known material of electric energy storage device.More specifically, as barrier film 4, can use the nonwoven fabrics that is formed by cellulose, viscose rayon, polyethylene, polypropylene, aromatic polyamide resin, amide imide, polyphenylene sulfide, polyimides etc., the film of Porous etc.The thickness of barrier film 4 is not particularly limited, and for example is below the above 50 μ m of 20 μ m.Barrier film 4 can be isolated positive pole 1 and negative pole 2 mutually.Further, barrier film 4 can infiltrate electrolyte.Be explained, electrolyte that electricity accumulating unit 18 uses solid shapes etc. as electrolytical situation under, even do not use barrier film 4 can not make yet anodal 1 with negative pole 2 short circuits, therefore can not use barrier film 4.
Electrolyte for example is nonaqueous electrolyte.Nonaqueous electrolyte for example can be the aqueous nonaqueous electrolytic solution take non-water class organic solvent as main component, also can be the electrolyte of gel or solid shape.For example can use to comprising and be selected from propylene carbonate, ethylene carbonate, 1,2-dimethoxy-ethane, 1,2-diethoxyethane, gamma-butyrolacton, oxolane, 1, in any solvent in the non-water class organic solvents such as 3-dioxolanes, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, methyl acetate, methyl formate or the mixed solvent of the solvent more than two kinds, dissolving LiPF 6, LiBF 4, LiClO 4, LiCF 3SO 3, LiC 4F 9SO 3, LiN (CF 3SO 2) 2, LiC (CF 3SO 2) 3Deng a kind of of lithium salts or more than two kinds and the electrolyte of the composition that obtains etc.The concentration of the lithium salts in the electrolyte for example is below the above 3mol/L of 0.5mol/L.
According to the electric energy storage device 600 of present embodiment, heating panel 30 contacts with the inner surface 603 of housing 602.Thus, electric energy storage device 600 can be transmitted to housing 602 with the heat that produces in the storage battery 10 by heating panel 30, from housing 602 heat radiations.Therefore, electric energy storage device 600 can have high thermal diffusivity.
Therefore further, the electric energy storage device 600 of present embodiment has high thermal diffusivity, causes following because of high power capacity in the large situation of lithium-ion capacitor as storage battery 10 of the thermal discharge that discharges and recharges using, and can especially effectively be suitable for.
2. variation
Below, with reference to accompanying drawing electric energy storage device in modified embodiment of the present embodiment on one side be described on one side.Below, in the electric energy storage device in modified embodiment of the present embodiment, have the parts of said function for the component parts with the electric energy storage device 600 of present embodiment, marked identical symbol, omit its detailed explanation.
2.1. the electric energy storage device in the 1st variation
With reference to accompanying drawing electric energy storage device in the 1st variation of present embodiment is described on one side at first, on one side.Fig. 7 is the diagrammatic side view of the part of the electric energy storage device 300 in the 1st variation of expression present embodiment.Fig. 8 is the schematic diagram of the part of the electric energy storage device 300 in the 1st variation of expression present embodiment, and is the figure that observes from the VIII direction of Fig. 7.Be explained, Fig. 7 is corresponding to Fig. 4, and Fig. 8 is corresponding to Fig. 5.
In the example of electric energy storage device 600, when side-looking, package body 12 is disposed at the inboard of the periphery of heating panel 30 as shown in Figure 4, and the part of heating panel 30 and terminal 20, a part of 22 are overlapping.Relative therewith, in electric energy storage device 300, when side-looking, heating panel 30 does not have overlapping with terminal 20,22 as shown in Figure 7.That is, when side-looking, heating panel 30 and terminal 20,22 spaced apart.
For example, because repeatedly carrying out discharging and recharging of storage battery, so that the temperature of storage battery improves, the temperature of internal storage battery is elevated to the heat-resistant limit of material when above, and then electrolyte etc. decomposes generation gas sometimes.And, because causing the internal pressure of storage battery, this gas raises the storage battery distortion sometimes.Further, have that heating panel is followed the distortion of storage battery and a situation of being out of shape.When heating panel distortion and heating panel and termination contact, have situation about being short-circuited between positive terminal and the negative terminal.Yet, according to electric energy storage device 300, when heating panel 30 distortion, also can prevent heating panel 30 and terminal 20,22 contact.
2.2. the electric energy storage device in the 2nd variation
Below, with reference to accompanying drawing electric energy storage device in 2nd variation of present embodiment on one side be described on one side.Fig. 9 is the diagrammatic side view of the electric energy storage device 400 in the 2nd variation of expression present embodiment.Figure 10 is the schematic diagram of the electric energy storage device 400 in the 2nd variation of expression present embodiment, and is the figure that observes from the directions X of Fig. 9.Be explained, Fig. 9 is corresponding to Fig. 4, and Figure 10 is corresponding to Fig. 5.
In the example of electric energy storage device 100, such as Fig. 4 and shown in Figure 5, positive terminal 20 prolongs from a side's of package body 12 end, and negative terminal 22 prolongs from the end of the opposite side of package body 12.Relative therewith, in electric energy storage device 400, such as Fig. 9 and shown in Figure 10, terminal 20,22 all prolongs from the end (for example end on right side) of a side.
Be explained, when side-looking, heating panel 30 can be not overlapping with terminal 20,22 yet as shown in Figure 9.Thus, can prevent heating panel 30 and terminal 20,22 contact.
2.3. the electric energy storage device in the 3rd variation
Below, with reference to accompanying drawing electric energy storage device in 3rd variation of present embodiment on one side be described on one side.Figure 11 is the figure of the electric energy storage device 700 in the 3rd variation of expression present embodiment, and is the figure corresponding to Fig. 2.Figure 12 is the figure of the electric energy storage device 700 in the 3rd variation of expression present embodiment, and is the figure that observes from the XII direction of Figure 11.
As shown in figure 11, in electric energy storage device 700, heating panel 30 differently contacts with the inner surface 603 (for example upper surface or lower surface) of housing 602 mutually.Namely, by clipping storage battery 10 among the adjacent heating panel 30, a slice heating panel 30 contacts with the 1st inner surface 603a (for example upper surface) of housing 602, and another sheet heating panel 30 contacts from the 2nd inner surface 603b (for example lower surface) different with the 1st inner surface 603a of housing 602.In example shown in Figure 11, contact with the 1st inner surface 603a by the heating panel 30 of storage battery 10a and storage battery 10b clamping and by the heating panel 30 of storage battery 10c and storage battery 10d clamping.Heating panel 30 by the heating panel 30 of storage battery 10b and storage battery 10c clamping and two ends contacts with the 2nd inner surface 603b.Thus, heat can not concentrated to the part of housing 602 but can carry out universally heat and disperse, and can effectively dispel the heat.
Further, as shown in figure 12, heating panel 30 also can contact with the inner surface (side) of housing 602.That is, heating panel 30 also can contact with 3 inner surfaces 603 of housing 602.Thus, further can equably heat be conducted to housing 602.
Be explained, although not shown, heating panel 30 also can be connected with cooling bodies such as chiller units.By such form, also can improve the thermal diffusivity of electric energy storage device 700.
2.4. the electric energy storage device in the 4th variation
Below, with reference to accompanying drawing electric energy storage device in 4th variation of present embodiment on one side be described on one side.Figure 13 is the schematic diagram of the electric energy storage device 800 in the 4th variation of expression present embodiment, and is the figure corresponding to Fig. 2.Figure 14 is the schematic diagram of the electric energy storage device 800 in the 4th variation of expression present embodiment, and is the figure that observes from the XIV direction of Figure 13.
In the example of electric energy storage device 600, as shown in Figure 2, the order setting according to storage battery 10a, storage battery 10b, storage battery 10c, storage battery 10d has configured heating panel 30 according to the mode that clips each storage battery.Relative therewith, in electric energy storage device 800, as shown in figure 13, only be provided with heating panel 30 between storage battery 10a and the storage battery 10b and between storage battery 10c and the storage battery 10d.In electric energy storage device 800, between storage battery 10b and the storage battery 10c space is set, thereby is spaced from each other and arranges.
According to electric energy storage device 800, for example compare with the example of electric energy storage device 600, in the situation that the storage battery 10 interior gases that produced, there is space easily deform (heaving) in storage battery 10 because of 10 on storage battery.Therefore, electric energy storage device 800 can have high reliability.Although produced gas in storage battery, storage battery or in the situation that can't be out of shape so that the internal pressure of storage battery raises significantly, produces bad phenomenon sometimes.
2.5. the electric energy storage device in the 5th variation
Below, with reference to accompanying drawing electric energy storage device in 5th variation of present embodiment on one side be described on one side.Figure 15 is the schematic diagram of the electric energy storage device 900 in the 5th variation of expression present embodiment, and is the figure corresponding to Fig. 2.Figure 16 is the schematic diagram of the electric energy storage device 900 in the 5th variation of expression present embodiment, and is the figure that observes from the XVI direction of Figure 15.Figure 17 is the schematic diagram of the part of the electric energy storage device 900 in the 5th variation of expression present embodiment.Figure 18 is the schematic isometric of the part of the electric energy storage device 900 in the 8th variation of expression present embodiment.Be explained, for convenient, in Figure 17 only figure be shown with a storage battery 10, be arranged at the terminal 20,22 of this storage battery 10, the fixed part 40 that is arranged at the heating panel 30 of this storage battery 10 and is arranged at this storage battery 10.In addition, for convenient, only figure is shown with a storage battery 10, is arranged at the terminal 20,22 and the fixed part 40 that is arranged at this storage battery 10 of this storage battery 10 in Figure 18.
Such as Figure 15 ~ shown in Figure 180, electric energy storage device 900 has fixed part 40.Fixed part 40 is for example avoided heating panel 30, is arranged at the outer surface of package body 12.That is, fixed part 40 does not have overlapping with heating panel 30.In example shown in Figure 17, heating panel 30 is arranged at the central portion of flat outer surface 14b, 16b.Fixed part 40 is avoided the central portion of flat outer surface 14b, be arranged at from flat outer surface 14b to flat outer surface 14b continuously and the zone of the inclined outer surface 14c that has tilted with respect to flat outer surface 14b.Further, fixed part 40 is avoided the central portion of flat outer surface 16b, be arranged at from flat outer surface 16b to flat outer surface 16b continuously and the zone of the inclined outer surface 16c that has tilted with respect to flat outer surface 16b.In illustrated example, be provided with 4 fixed parts 40 with respect to a storage battery 10.
For example, as shown in figure 17, the fixed part 40 (the 2nd fixed part 40b) of the fixed part 40 of available the 1st packing film 14 sides (the 1st fixed part 40a) and the 2nd packing film 16 sides is storage battery 10 clampings, thereby storage battery 10 is fixed in the housing 602.More specifically, the 1st fixed part 40a is arranged at the zone from the flat outer surface 14b of the 1st packing film 14 to inclined outer surface 14c.The 2nd fixed part 40b is arranged at the zone from the flat outer surface 16b of the 2nd packing film 16 to inclined outer surface 16c.As shown in figure 18, fixed part 40 can have the section of heaving 42.In the section of heaving 42, can hold because of hold electricity accumulating unit 18 cause package body 12 (storage battery 10) thus heave the part (flat outer surface 14b, 16b etc.) that forms.Thus, can be stably that storage battery 10 is fixing.
As the method to set up of fixed part 40 and package body 12, but illustration goes out to use thermal welding resin (ethylene-vinyl acetate copolymer resin, olefine kind resin etc.), the so high bonding agent of thermal conductivity of bonding agent (heat molten type bonding agent, moisture-curable bonding agent, pressure-sensitive bonding agent etc.) to carry out bonding method.In addition, also the organic fillers such as mineral-type filler, epoxy resin such as boron nitride can be mixed in bonding agent.
Can make fixed part 40 be connected in the inner surface 603 of housing 602, storage battery 10 is fixed in the housing 602.As the material of fixed part 40, for example list aluminium, iron, copper or any one alloy as main component in these metals.
Fixed part 40 is not particularly limited with the method for attachment of housing 602, for example can the inner surface 603 that the screw hole 44 (with reference to Figure 18) of fixed part 40 is fixed in housing 602 be carried out by screw, also can fix by welding, also can use such bonding agent of enumerating in the method to set up of fixed part 40 and package body 12 and carry out.
Can make the rigidity of fixed part 40 greater than the rigidity of heating panel 30.Thus can storage battery 10 is stably fixing.For example, as shown in figure 19, the thickness by making fixed part 40 can make the rigidity of fixed part 40 greater than the rigidity of heating panel 30 greater than the thickness of heating panel 30.Be explained, in example shown in Figure 15, have each other a heating panel 30 at adjacent storage battery 10, but in example shown in Figure 19, be provided with two heating panels 30 at a storage battery 10.
Be explained, in Figure 15 and example shown in Figure 19, be provided with 4 storage batterys 10, but its quantity is not particularly limited, and a storage battery 10 for example also can be set, storage battery 10 more than 4 also can be set, can be according to as the output voltage of target, output current and set its quantity in good time.
According to electric energy storage device 900, can storage battery 10 be stable in the housing 602 by fixed part 40 and fix.Therefore, electric energy storage device 900 can have high reliability.
Further, in electric energy storage device 900, the thickness by making fixed part 40 can make the rigidity of fixed part 40 greater than the rigidity of heating panel 30 greater than the thickness of heating panel 30.Thus, in the situation that 10 distortion of storage battery 10 interior generation gases and storage battery, also can be by the large fixed part 40 of rigidity that storage battery 10 is stably fixing, and so that heating panel 30 follow in the distortion of storage battery 10 because rigidity is little.For example, have the large heating panel of rigidity and can't follow distortion in storage battery, storage battery and contacting of the heating panel inadequate situation that becomes.Heating panel is also peeled off from storage battery sometimes.Therefore, thermal diffusivity reduces sometimes.According to electric energy storage device 900, can solve such problem, storage battery 10 is stably fixing and can have high thermal diffusivity.In addition, in Figure 15 and example shown in Figure 17, it is overlapping that fixed part 40 and heating panel 30 do not have, and therefore can not hindered because fixed part 40 makes the distortion of heating panel 30, and heating panel 30 can be followed in the distortion of storage battery 10.
Be explained, in the utility model, " rigidity " refers to object is applied the degree that external force is wanted its when distortion its distortion of object impedance.That is, rigidity is less, and then object more easily is out of shape (easily crooked).
In addition, as shown in figure 20, also can between fixed part 40 and storage battery 10, there be heating panel 30 in the electric energy storage device 900.That is, the part of the part of fixed part 40 and heating panel 30 also can be overlapping.Thus, can more positively suppress heating panel peels off from storage battery.
2.6. the electric energy storage device in the 6th variation
Below, with reference to accompanying drawing electric energy storage device in 6th variation of present embodiment on one side be described on one side.Figure 21 is the schematic diagram of the electric energy storage device 1000 in the 6th variation of expression present embodiment, and is the figure corresponding to Figure 15.Below, about the electric energy storage device 1000 in the 6th variation of present embodiment, mainly to the 5th variation of present embodiment in the difference of electric energy storage device 900 describe.
As shown in figure 15, in the example of electric energy storage device 900, be provided with 4 fixed parts 40 with respect to a storage battery 10.Relative therewith, as shown in figure 21, in electric energy storage device 1000, be provided with two fixed parts 40 with respect to a storage battery 10.More specifically, be provided with two storage batterys 10 and come clamping heating panel 30, further be provided with two fixed parts 40 and come clamping storage battery 10.
According to electric energy storage device 1000, for example compare with the example of electric energy storage device 900, in the situation that the storage battery 10 interior gases that produced, storage battery 10 can easily be out of shape (heaving).Although in storage battery, produced gas, in the situation that storage battery can't be out of shape, the internal pressure of storage battery is raise significantly, produce bad phenomenon.
The utility model is not subject to above-mentioned execution mode, can carry out all distortion.For example, but also each execution mode of appropriate combination and each variation.In addition, for example the utility model comprise with execution mode in the identical in fact formation (formation that for example, function, method and the formation that comes to the same thing or purpose and effect are identical) of the formation that illustrates.In addition, the utility model comprises the part displacement of non-intrinsically safe of the formation that will illustrate in the execution mode and the formation that obtains.In addition, the utility model comprise can play with execution mode in the formation that illustrates the formation of same function effect is arranged or can realize the formation of identical purpose.In addition, the utility model is included in the formation that obtains in conjunction with known technology in the formation that illustrates in the execution mode.
Description of reference numerals
1 positive pole, 2 negative poles, 4 barrier films, 5 electrode duplexers, 6 positive wires, 7 negative wires, 10 storage batterys, 12 package bodies, 14 the 1st packing films, 16 the 2nd packing films, 18 electricity accumulating units, 20 positive terminals, 22 negative terminals, 30 heating panels, 40 fixed parts, 42 heave section, 44 screw holes, 300 electric energy storage devices, 400 electric energy storage devices, 600 ~ 1000 electric energy storage devices, 602 housings, 603 inner surfaces, 604 outside terminals, 606 outside terminals, 608 wirings, 610 air cooling ends, 612 exhaust portion.

Claims (12)

1. electric energy storage device, it is characterized in that comprising: storage battery, be arranged at the package body outer surface of described storage battery heating panel, hold the housing of described storage battery and described heating panel, in described storage battery, have positive pole, negative pole and electrolytical electricity accumulating unit and be contained in the package body, described heating panel is contacted with the inner surface of described housing.
2. electric energy storage device according to claim 1 is characterized in that, is laminated with a plurality of described storage batterys and described heating panel, and a plurality of described storage batterys are electrically connected.
3. electric energy storage device according to claim 2, it is characterized in that, described storage battery and described heating panel are alternately stacked, by clipping described storage battery in the adjacent described heating panel, the described heating panel of a slice contacts with the 1st inner surface of described housing, and the described heating panel of another sheet contacts from the 2nd inner surface different with described the 1st inner surface of described housing.
4. electric energy storage device according to claim 2, it is characterized in that, among a plurality of described storage batterys, sequential cascade according to the 1st storage battery, the 2nd storage battery, the 3rd storage battery and the 4th storage battery, between described the 1st storage battery and described the 2nd storage battery and between described the 3rd storage battery and described the 4th storage battery, configure described heating panel, described the 2nd storage battery and described the 3rd storage battery are spaced from each other by the space.
5. the described electric energy storage device of any one according to claim 1 ~ 4, it is characterized in that further comprising the 1st fixed part and the 2nd fixed part that are connected in described shell inner surface, described storage battery is by described the 1st fixed part and described the 2nd fixed part clamping and fix.
6. electric energy storage device according to claim 5 is characterized in that,
Described package body consists of by the 1st packing film and the 2nd packing film are engaged,
Described the 1st packing film and described the 2nd packing film have because of described electricity accumulating unit is contained in described package body cause heaving the flat outer surface that forms and with described flat outer surface continuously and the inclined outer surface that has tilted with respect to described flat outer surface
Described the 1st fixed part is arranged at the zone from described flat outer surface to described inclined outer surface of described the 1st packing film, and described the 2nd fixed part is arranged at the zone from described flat outer surface to described inclined outer surface of described the 2nd packing film.
7. electric energy storage device according to claim 6, it is characterized in that, described heating panel is arranged at the described flat outer surface of described the 1st packing film and the described flat outer surface of described the 2nd packing film, it is overlapping that described the 1st fixed part and the described heating panel that arranges in the described flat outer surface of described the 1st packing film do not have, and described the 2nd fixed part does not have overlapping with the described heating panel that described flat outer surface at described the 2nd packing film arranges.
8. electric energy storage device according to claim 6, it is characterized in that, described heating panel is arranged at the described flat outer surface of described the 1st packing film and the described flat outer surface of described the 2nd packing film, described the 1st fixed part is overlapping with the described heating panel that arranges in the described flat outer surface of described the 1st packing film, and described the 2nd fixed part is overlapping with the described heating panel that described flat outer surface at described the 2nd packing film arranges.
9. the described electric energy storage device of any one is characterized in that according to claim 5 ~ 8, and the thickness of the thickness of described the 1st fixed part and described the 2nd fixed part is greater than the thickness of described heating panel.
10. the described electric energy storage device of any one is characterized in that according to claim 1 ~ 9, and the material of described housing is aluminium.
11. the described electric energy storage device of any one according to claim 1 ~ 10, its further comprise be arranged at described package body and with the described anodal positive terminal that is electrically connected and the negative terminal that is arranged at described package body and is connected with described negative electricity, described heating panel and described positive terminal and described negative terminal do not have overlapping.
12. the described electric energy storage device of any one is characterized in that according to claim 1 ~ 11, described electricity accumulating unit is lithium-ion capacitor.
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