CN201789041U - Bipolar secondary battery - Google Patents
Bipolar secondary battery Download PDFInfo
- Publication number
- CN201789041U CN201789041U CN2010202558058U CN201020255805U CN201789041U CN 201789041 U CN201789041 U CN 201789041U CN 2010202558058 U CN2010202558058 U CN 2010202558058U CN 201020255805 U CN201020255805 U CN 201020255805U CN 201789041 U CN201789041 U CN 201789041U
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- collector body
- wiring substrate
- connecting portion
- secondary cell
- ambipolar secondary
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model provides a bipolar secondary battery which prevents a wiring substrate used for outputting electric potential of collector bodies of single batteries from being easily stripped from the collector bodies. The bipolar secondary battery (100) comprises a power generation element (30), a first connecting part (51) and a second connecting part (52), wherein the power generation element (30) is formed by laminating the bipolar electrodes (21) through electrolyte layers (25); the bipolar electrodes (21) is provided with positive pole active substance layers formed on one side of the collector bodies (22) and negative pole active substance layers formed on the other side of the collector bodies; the first connecting part (51) is clamped between the adjacent collector bodies (22b and 22c) in the laminated direction; and conductive layers (51b and 51c) in contact with the collector bodies are formed on the two sides of an insulating layer (51a); the second connecting part (52) is arranged between the adjacent collector bodies, and outputs the electric potential of the collector bodies through the first connecting part (51).
Description
Technical field
The utility model relates to a kind of ambipolar secondary cell.
Background technology
In recent years, be accompanied by the increase in demand of hybrid-power electric vehicle (HEV) and electric motor car motor vehicles such as (EV), increase as the output of the secondary cell of the drive source of these motor vehicles.The structure of secondary cell exists various, wherein, and the ambipolar secondary cell of known a kind of structure that a plurality of monocells are in series stacked.
Ambipolar secondary cell from keeping the viewpoint of battery performance, requires to detect one by one at work the output voltage of each monocell.Voltage detecting distribution technology as the output voltage of each monocell that is used to detect ambipolar secondary cell discloses a kind of wiring substrate that is used to detect single battery voltage in following patent documentation 1.In the wiring substrate of patent documentation 1, on each collector body of a plurality of monocells, the wiring substrate that has used flexible flat cable is installed stacked, export the current potential in the collector body successively.
Patent documentation 1: the spy opens the 2005-235463 communique
The utility model content
But, in the wiring substrate of above-mentioned patent documentation 1, because flexible flat cable only engages with collector body at single face, so producing under the situation of stress on the composition surface between flexible flat cable and the collector body, flexible flat cable may be out of shape and peel off from collector body.
The utility model provides a kind of difficult ambipolar secondary cell of peeling off from collector body.
Above-mentioned purpose of the present utility model can be realized by following method.
Ambipolar secondary cell of the present utility model has generating key element, the 1st connecting portion and the 2nd connecting portion.The generating key element is stacked and form with bipolar electrode via dielectric substrate, and this bipolar electrode is to form positive electrode active material layer in a side of collector body, forms negative electrode active material layer at another side and forms.The 1st connecting portion is held between collector body adjacent on the stacked direction, forms the conductive layer that engages with collector body on the two sides of insulating barrier.The 2nd connecting portion is configured between the adjacent collector body, via the current potential of the 1st connecting portion output collector body.
The effect of utility model
According to ambipolar secondary cell of the present utility model, owing to make wiring substrate and across wiring substrate and adjacent collector body becomes one, so can make wiring substrate be difficult for peeling off from collector body textural.
Description of drawings
Fig. 1 is the outside drawing of the ambipolar secondary cell in the 1st execution mode of the present utility model.
Fig. 2 is the profile along the A-A line of ambipolar secondary cell shown in Figure 1.
Fig. 3 is the profile along the B-B line of ambipolar secondary cell shown in Figure 1.
Fig. 4 (A) is the profile that the part of the wiring substrate of the ambipolar secondary cell in the 1st execution mode of the present utility model is amplified.Fig. 4 (B) and Fig. 4 (C) are configured in the profile that the part of the wiring substrate under the situation of other position is amplified with wiring substrate.
Fig. 5 is the oblique view that is used to illustrate the battery pack that is made of ambipolar secondary cell shown in Figure 1.
Fig. 6 is the summary pie graph that is used to illustrate the vehicle that is equipped with battery pack shown in Figure 5.
Fig. 7 is the profile that the wiring substrate with the ambipolar secondary cell in the 2nd execution mode of the present utility model partly amplifies.
Fig. 8 is the oblique view that is used to illustrate wiring substrate shown in Figure 7.
Fig. 9 is the profile that the wiring substrate with the ambipolar secondary cell in the 3rd execution mode of the present utility model partly amplifies.
Figure 10 is the profile that the wiring substrate with the ambipolar secondary cell in the 4th execution mode of the present utility model partly amplifies.
Embodiment
Below, with reference to accompanying drawing, the execution mode of ambipolar secondary cell of the present utility model is described.In addition, use same label for same parts among the figure.In addition, for convenience of description, there is situation about not being inconsistent with actual ratio in the dimension scale exaggeration with drawing.In each following execution mode, the ambipolar lithium rechargeable battery of illustration describes.
(the 1st execution mode)
Fig. 1 is the outside drawing of the ambipolar secondary cell in the 1st execution mode of the present utility model.The ambipolar secondary cell of present embodiment is used to export the wiring substrate of monocell current potential by adjacent collector body clamping.
As shown in Figure 1, the ambipolar secondary cell 100 of present embodiment is the ambipolar secondary cell with flat pattern of current potential lead-out terminal 104 (104a, 104b, 104c).More particularly, ambipolar secondary cell 100 has: exterior packaging material 103; The anodal collector plate 101 and the negative pole collector plate 102 of drawing from exterior packaging material 103 relative both sides; And current potential lead-out terminal 104, it is arranged on the one side of drawing the direction that direction intersects with these collector plates.The ambipolar secondary cell 100 of present embodiment shown in Figure 1 has 3 current potential lead-out terminals.But the number of current potential lead-out terminal 104 can be corresponding with battery structure and suitable change.
＜exterior packaging material 〉
As flaky material, can suitably use laminated film, polyethylene, polypropylene, Merlon etc.Laminated film is the metal forming that constitutes by metals (comprising alloy) such as aluminium, stainless steel, nickel, copper, by the film after the synthetic resin film lining of insulating properties such as polypropylene film.
Below, with reference to Fig. 2, describe the internal structure of the ambipolar secondary cell 100 of present embodiment in detail.Fig. 2 is the profile along the A-A line of ambipolar secondary cell shown in Figure 1.As shown in Figure 2, the ambipolar secondary cell 100 of present embodiment has generating key element 30, sealing 40 and wiring substrate 50 in exterior packaging material 103.
＜generating key element 〉
Generating key element 30 is the parts by a plurality of monocell supply capabilities with electromotive force.More particularly, generating key element 30 is via a plurality of dielectric substrates that replace 25, a plurality of bipolar electrode 21 is stacked and form, and this bipolar electrode 21 is to form positive electrode active material layer 23 in a side of collector body 22, forms in the another side that negative electrode active material layer 24 forms.Contain collector body 22 by stacked direction both ends of the surface, and form monocell 26 at positive electrode active material layer 23, dielectric substrate 25 and negative electrode active material layer 24.Form sealing 40 around each monocell 26, partition positive electrode active material layer 23, dielectric substrate 25 and negative electrode active material layer 24 contact with extraneous gas.6 monocells 26 are set in generating key element 30 shown in Figure 2.But the number of monocell 26 is not limited to 6, can be corresponding with ambipolar secondary cell 100 desired voltages and capacity and any selection.
The outermost layer of a side at the stacked direction of generating key element 30 disposes the collector body 22a that only has positive electrode active material layer 23 in single side face, at the outermost layer of opposite side, disposes the collector body 22d that only has negative electrode active material layer 24 in single side face.
In addition, example goes out in the present embodiment, uses collector body 22a, the 22d only have positive electrode active material layer 23 or negative electrode active material layer 24 at the two ends of the stacked direction of generating key element 30.But, also can be with bipolar electrode 21 that use, that have positive electrode active material layer 23 and negative electrode active material layer 24 beyond the two ends of generating key element 30, directly be used in the outermost layer at two ends of the stacked direction of generating key element 30.
The material of collector body 22 is restriction especially not, can use material known.For example, as the material of collector body 22, preferably use aluminium, stainless steel (SUS) etc.In addition, collector body 22 also can contain macromolecular material.
Positive electrode active material layer 23 contains positive active material, works as the positive pole of monocell 26.As positive electrode active material layer 23, on the basis of positive active material, can also contain conductive auxiliary agent, adhesive etc.
As positive active material, for example can use the transition metal that in the lithium ion battery of solution class, uses and the composite oxides of aluminium.
Negative electrode active material layer 24 contains negative electrode active material, works as the negative pole of monocell 26.As negative electrode active material layer 24, on the basis of negative electrode active material, can also contain conductive auxiliary agent, adhesive etc.
As negative electrode active material, can use the negative electrode active material that in the lithium ion battery of solution class, uses.
Especially, in the present embodiment, positive active material as positive electrode active material layer uses lithium one compound transition metal oxide, use carbon black or lithium-compound transition metal oxide as the negative electrode active material of negative electrode active material layer, thereby can be formed in capacity, battery that the output characteristic aspect is good.
＜sealing 〉
As the sealing precursor, preferred for example the use by pressurizing and deformation is close to the rubber resin on the collector body 22 or makes its heat bonding be close to the resin of the hot meltable of alkenes resin on the collector body 22 etc. by heating and pressurizing.
Be not particularly limited as rubber resin, but the rubber resin of preferably from the group who forms by silicone rubber, fluorine class rubber, alkenes rubber, butyronitrile class rubber, selecting.These rubber resins, good at aspects such as sealing, alkali resistance, drug resistance, durability, weatherability, thermal endurances, even these good performances and quality also can not worsen under environment for use, can keep for a long time.
As the resin of hot meltable, as long as can the good sealing effectiveness of performance, not restriction especially under all environments for use of generating key element 30 as sealing 40.The preferred resin of from the group who forms by silicone, epoxy, urethane, polybutadiene, alkenes resin (polypropylene, polyethylene etc.), paraffin, selecting.The resin of these hot meltables, good at aspects such as sealing, alkali resistance, drug resistance, durability, weatherability, thermal endurances, even these good performances, quality also can not worsen under environment for use, can keep for a long time.
In addition, as thermosetting resin, can use phenolic resins, urea resin, melamine resin, epoxy resin etc.
＜wiring substrate 〉
Below, with reference to Fig. 2, Fig. 3 and Fig. 4 (A)～Fig. 4 (C), the wiring substrate of the ambipolar secondary cell of present embodiment is described.Fig. 3 is the profile along the B-B line of ambipolar secondary cell 100 shown in Figure 1, and Fig. 4 (A)～Fig. 4 (C) is the profile that the part of the wiring substrate 50 of ambipolar secondary cell 100 shown in Figure 2 is amplified.
As shown in Figure 2, wiring substrate 50 is used for the collector body 22 of monocell 26 of generating key element 30 is connected with the current potential lead-out terminal 104 of drawing from exterior packaging material 103.More particularly, wiring substrate 50 is configured in the sealing 40, by 22 clampings of adjacent collector body, the current potential that produces at collector body 22 places by the electromotive force of monocell 26, conductive layer 51b, 51c via wiring substrate 50, by the inside distribution of wiring substrate 5, derive to current potential lead-out terminal 104b.In addition, for the current potential of the collector body of other monocell shown in Figure 2 similarly, import to current potential lead-out terminal 104a, 104c via wiring substrate 50a, 50c from the current potential of collector body.
As shown in Figure 3, wiring substrate 50a, 50b, 50c are configured to, and be corresponding with the position of stacked monocell 26 and do not contact each other.In the ambipolar secondary cell 100 of present embodiment, from the wiring substrate 50a that is positioned at the extreme higher position to wiring substrate 50b, 50c, the height of stacked direction reduces successively, and staggers and do not overlap one another in the position of the direction parallel with the lamination surface of monocell 26.Below, with reference to Fig. 4 (A)～Fig. 4 (C), describe wiring substrate 50 in detail.
Shown in Fig. 4 (A), wiring substrate 50 has the 1st connecting portion 51 and the 2nd connecting portion 52.More particularly, wiring substrate 50 has the 1st connecting portion 51, the 1 connecting portions 51 and is held between collector body 22b, 22c adjacent on the stacked direction, is formed with the conductive layer 51b, the 51c that contact with collector body 22b, 22c on the two sides of insulating barrier 51a.In addition, wiring substrate 50 is configured between adjacent collector body 22b, the 22c, has the 2nd connecting portion 52 that is used for via the current potential of the 1st connecting portion 51 output collector body 22b, 22c.
The 1st connecting portion 51 forms roughly rectangular-shaped.Conductive layer 51b is formed at least a portion of a side of rectangular-shaped insulating barrier 51a, contacts with collector body 22c is electric.Conductive layer 51c is formed at least a portion of another side of insulating barrier 51a, contacts with collector body 22c is electric.On the other hand, conductive layer 51b and conductive layer 51c are by insulating barrier 51a electric insulation.
The 2nd connecting portion 52, via the 1st connecting portion 51, the current potential of output collector body 22b, 22c.More particularly, the 2nd connecting portion 52 has distribution 53b, the 53c by the insulating material lining, and the end of distribution 53b and distribution 53c is connected with conductive layer 51b and conductive layer 51c respectively, and the other end is drawn to the outside of exterior packaging material 103.And adjacent collector body 22b, the current potential of 22c to the output of the outside of ambipolar secondary cell 100, calculate the voltage of monocell 26 via current potential lead-out terminal 104 in the outside of ambipolar secondary cell 100.
The 2nd connecting portion 52 is positioned at the centre of collector body 22b and collector body 22c, and the unfertile land of comparing with the 1st connecting portion 51 forms, and the narrow ground, interval between interval between distribution 53b and distribution 53c and conductive layer 51b and conductive layer 51c forms.
As mentioned above, the ambipolar secondary cell 100 of present embodiment, owing to become one at the textural wiring substrate 50 and clamping wiring substrate 50 and adjacent collector body 22b, 22c of making, so be difficult for wiring substrate 50 is peeled off from collector body 22b, 22c.Its result, even at the composition surface place of wiring substrate 50 with collector body 22b, 22c, for example owing to the eigentone of wiring substrate 50 with comprise collector body 22b, 22c and cause that in the deviation of the eigentone of interior generating key element 30 vibration produces stress or produces under the situation of stress owing to hot, also can prevent loose contact.And, by the 2nd connecting portion 52 being formed on the centre between collector body 22b and collector body 22c, thereby can disperse stress equably to the stacked direction on the composition surface between wiring substrate 50 and collector body 22b, the 22c.Thus, can keep the contacting of composition surface place of collector body 22b, 22c and wiring substrate 50 well.
In addition, in the present embodiment, because the current potential of adjacent two collector body 22b, 22c, can be by 50 outputs of a wiring substrate, so the current potential of each collector body 22 of 6 stacked monocells 26 can utilize 3 wiring substrates 50 to export under minimum situation.More in general, be under the situation of N at the stacked number of monocell, as long as use wiring substrate,, just can export the current potential of whole collector bodies promptly more than or equal to the 1st connecting portion of N/2 more than or equal to N/2.
Thus, owing to comparing, can cut down the sum of wiring substrate, so can reduce the shared area of wiring substrate with the situation of distributing 1 wiring substrate to constitute for 1 collector body.In addition, owing to reduced the sum of wiring substrate, so also can cut down the activity duration (productive temp) that is used to install wiring substrate.
The ambipolar secondary cell 100 of the present embodiment of Gou Chenging as mentioned above has the system at 26 sealings of each monocell, can prevent via the liquid short circuit of the electrolyte of 26 of each monocells or via the short circuit of collector body 22.In addition, shown in Fig. 4 (A), consideration electrolyte etc. preferably are configured in wiring substrate 50 in the sealing 40 influence of wiring substrate 50.But, also can be corresponding with the manufacture method of ambipolar secondary cell 100, shown in Fig. 4 (B), be configured between generating key element 30 and the sealing 40, perhaps shown in Fig. 4 (C), be configured in the outside of generating key element 30 and sealing 40.Wiring substrate 50 is being configured between generating key element 30 and the sealing 40 or is being configured under the situation in the outside of generating key element 30 and sealing 40, wiring substrate 50 is preferably formed by the material that is difficult to be subjected to influence such as electrolyte.
Ambipolar secondary cell 100 according to the present embodiment of above formation, owing to be used to export the wiring substrate 50 of the current potential of monocell 26, by 22 clampings of adjacent collector body, so become one at textural wiring substrate 50 and the adjacent collector body 22 of making, be the structure that supports two ends by same material.Thus, wiring substrate 50 is difficult for peeling off from collector body 22.Its result is even place, the composition surface between wiring substrate 50 and collector body 22 also can prevent loose contact owing to vibration or hot the generation under the situation of stress.
Below, with reference to Fig. 5 and Fig. 6, battery pack and vehicle in the present embodiment are described.
＜battery pack 〉
Above Shuo Ming ambipolar secondary cell 100 connects a plurality of and forms battery module 200 in the mode of serial or parallel connection, further connects a plurality of in the mode of serial or parallel connection battery module 200 once more and can form battery pack 300.Battery module 200 is that ambipolar secondary cell 100 is stacked a plurality of and be housed in the modular cartridge, and each ambipolar secondary cell 100 is connected in parallel to be formed.Fig. 5 is the oblique view of the battery pack in the present embodiment.The battery module of making 200 uses this electric connecting part of bus to be connected to each other, and multistage is stacked.The number of the ambipolar secondary cell 100 that uses in battery pack 300 and the stacked number of battery module 200 are with the battery capacity of the vehicle that is carried and export corresponding and determine.
＜vehicle 〉
Fig. 6 represents the summary pie graph as the electric motor car of the vehicle of present embodiment.Above-mentioned ambipolar secondary cell 100, battery module 200 and/or battery pack 300 are carried on vehicles such as automobile and electric car, and the driving that can be used as electric equipments such as motor is used with power supply.As shown in Figure 6, the electric motor car 400 of present embodiment is under the seat of car body central portion battery-mounted group 300.Utilization makes the driving wheel rotation from the motor of battery pack 300 supply capabilities, and electric motor car 400 is travelled.And, in the electric motor car 400 that constitutes as mentioned above, peel off from collector body owing to can prevent in ambipolar secondary cell 100 wiring substrate 50, so can keep battery functi on well, improve the reliability of electric motor car 400.In addition, the ambipolar secondary cell 100 of present embodiment or battery pack 300 also can be used as the use of fixed configurations type battery except carrying on the vehicle.
Shuo Ming present embodiment can reach following effect as mentioned above.
(a) be used to export the wiring substrate of monocell current potential, by adjacent collector body clamping.Thus, owing to become one at the textural wiring substrate and clamping wiring substrate and adjacent collector body of making, wiring substrate is difficult for peeling off from collector body.Its result is even locate also can prevent loose contact owing to vibration or hot the generation under the situation of stress on the composition surface between wiring substrate and the collector body.
(b) the 2nd connecting portion is arranged on the centre of adjacent collector body.Thus, owing to can disperse stress equably, so can keep the contacting of place, composition surface of collector body and wiring substrate well to the stacked direction on the composition surface between wiring substrate and the collector body.
(c) sum of the 1st connecting portion is more than or equal to half of sum of the generating monocell that key element comprised, and less than the sum of monocell.Thus, owing to cut down the sum of wiring substrate, so can cut down the shared area of wiring substrate.In addition, owing to cut down the sum of wiring substrate, so can cut down the activity duration (productive temp) that is used to install wiring substrate.
(d) battery pack of present embodiment is connected a plurality of with combination in parallel above-mentioned ambipolar secondary cell series, parallel or series connection.Thus, peel off from collector body owing to can prevent wiring substrate, so can keep battery functi on well.Its result, the durability of raising battery.
(e) vehicle of present embodiment carries as driving above-mentioned ambipolar secondary cell or above-mentioned battery pack with power supply.Thus, owing to improved the durability of battery, improve the reliability of vehicle.
(the 2nd execution mode)
In the 1st execution mode, be shaped as roughly for the 1st connecting portion that the situation of cuboid is illustrated.In the 2nd execution mode, describe in the situation that stacked direction has jog at the 1st connecting portion.
Fig. 7 is the profile that the part of the wiring substrate of the ambipolar secondary cell of present embodiment is amplified.As shown in Figure 7, in the present embodiment, the 1st connecting portion 51 has protuberance 51d, and this protuberance 51d is outstanding to the direction along the dielectric substrate 25 of monocell 26.In addition, since identical with the 1st execution mode except the 1st connecting portion 51 has protuberance 51d, so omission is at the detailed description of ambipolar secondary cell, battery pack and vehicle structure.
Fig. 8 is the oblique view that is used to illustrate wiring substrate shown in Figure 7 50.As shown in Figure 8, the 1st connecting portion 51 of wiring substrate 50 has protuberance 51d along the face parallel with the lamination surface of collector body 22b, 22c.That is, 51 sealed 40 plastic packagings of the 1st connecting portion have jog on the stacked direction of monocell 26.
Thus, the plastic packaging of the thermosetting resin by sealing 40 produces fixed effect between wiring substrate 50 and sealing 40.Its result can improve the vibration resistance of wiring substrate 50.
Shuo Ming present embodiment and the 1st execution mode can reach following effect in the same manner as mentioned above.
(a) be used to export the wiring substrate of monocell current potential, by adjacent collector body clamping.Thus, owing to become one at the textural wiring substrate and clamping wiring substrate and adjacent collector body of making, wiring substrate is difficult for peeling off from collector body.Its result is even locate also can prevent loose contact owing to vibration or hot the generation under the situation of stress on the composition surface of wiring substrate and collector body.
(b) the 2nd connecting portion is arranged on the centre of adjacent collector body.Thus, owing to can disperse stress equably, so can keep the contacting of place, composition surface of collector body and wiring substrate well to the stacked direction on the composition surface between wiring substrate and the collector body.
(c) sum of the 1st connecting portion is more than or equal to half of sum of the generating monocell that key element comprised, and less than the sum of monocell.Thus, owing to cut down the sum of wiring substrate, so can cut down the shared area of wiring substrate.In addition, owing to cut down the sum of wiring substrate, so can cut down the activity duration (productive temp) that is used to install wiring substrate.
(d) battery pack of present embodiment is connected a plurality of with combination in parallel above-mentioned ambipolar secondary cell series, parallel or series connection.Thus, peel off from collector body owing to can prevent wiring substrate, so can keep battery functi on well.Its result, the durability of raising battery.
(e) vehicle of present embodiment carries as driving above-mentioned ambipolar secondary cell or above-mentioned battery pack with power supply.Thus, owing to improved the durability of battery, improve the reliability of vehicle.
And, on the basis of the effect of the present embodiment of explanation in the 1st execution mode, can also reach following effect.
(f) sealed plastic packaging of the 1st connecting portion has jog on stacked direction.Thus, owing between the 1st connecting portion and sealing, produce fixed effect, so can improve the vibration resistance characteristic of wiring substrate.
(the 3rd execution mode)
In the 1st execution mode, be illustrated at the situation of the 1st connecting portion and collector body plane contact.In the 3rd execution mode, have protuberance at insulation division, the situation that protuberance thrusts in the collector body describes.
Fig. 9 is the profile that the part of the wiring substrate of the ambipolar secondary cell of present embodiment is amplified.As shown in Figure 9, in the present embodiment, the 1st connecting portion 51 has the outstanding protuberance 51d to collector body 22b, 22c.In addition, because except the 1st connecting portion 51 has protuberance 51d, identical with the 1st execution mode, so omission is to the detailed description of ambipolar secondary cell, battery pack and vehicle structure.
In the present embodiment, across conductive layer 51b, 51c, section is the protuberance 51d of triangle, forms 2 in the side of insulation division 51a, forms 2 at opposite side, adds up to form 4, thrusts among collector body 22b, the 22c that comprises macromolecular material.Thus, between wiring substrate 50 and collector body 22b, 212c, produce fixed effect.Its result can improve the vibration resistance characteristic of wiring substrate 50.
Shuo Ming the 3rd execution mode and the 1st and the 2nd execution mode can reach following effect in the same manner as mentioned above.
(a) be used to export the wiring substrate of monocell current potential, by adjacent collector body clamping.Thus, owing to become one at the textural wiring substrate and clamping wiring substrate and adjacent collector body of making, wiring substrate is difficult for peeling off from collector body.Its result is even locate also can prevent loose contact owing to vibration or hot the generation under the situation of stress on the composition surface of wiring substrate and collector body.
(b) the 2nd connecting portion is arranged on the centre of adjacent collector body.Thus, owing to can disperse stress equably, so can keep the contacting of place, composition surface of collector body and wiring substrate well to the stacked direction on the composition surface between wiring substrate and the collector body.
(c) sum of the 1st connecting portion is more than or equal to half of sum of the generating monocell that key element comprised, and less than the sum of monocell.Thus, owing to cut down the sum of wiring substrate, so can cut down the shared area of wiring substrate.In addition, owing to cut down the sum of wiring substrate, so can cut down the activity duration (productive temp) that is used to install wiring substrate.
(d) battery pack of present embodiment is connected a plurality of with combination in parallel above-mentioned ambipolar secondary cell series, parallel or series connection.Thus, peel off from collector body owing to can prevent wiring substrate, so can keep battery functi on well.Its result, the durability of raising battery.
(e) vehicle of present embodiment carries as driving above-mentioned ambipolar secondary cell or above-mentioned battery pack with power supply.Thus, owing to improved the durability of battery, improve the reliability of vehicle.
(f) sealed plastic packaging of the 1st connecting portion has jog on stacked direction.Thus, owing between the 1st connecting portion and sealing, produce fixed effect, so can improve the vibration resistance characteristic of wiring substrate.
And the 3rd execution mode of explanation on the basis of the effect in the 1st and the 2nd execution mode, can also reach following effect.
(g) the 1st connecting portion has protuberance at least one side, and protuberance is thrust comprise in the collector body of macromolecular material.Thus, owing between the 1st connecting portion and collector body, produce fixed effect, so can improve the vibration resistance characteristic of wiring substrate.
(the 4th execution mode)
In the 3rd execution mode, has protuberance and situation that protuberance thrusts in the collector body is illustrated at insulation division.In the 4th execution mode, has protuberance and situation that protuberance thrusts in the collector body describes at conductive layer.
Figure 10 is the profile that the part of the wiring substrate of the ambipolar secondary cell in the present embodiment is amplified.As shown in figure 10, in the present embodiment, conductive layer 51b, 51c have the outstanding protuberance 51d to collector body 22b, 22c.In addition, since identical with the 1st execution mode except conductive layer 51b, 51c have protuberance 51d, so omission is to the detailed description of ambipolar secondary cell, battery pack and vehicle structure.
In the present embodiment, section is that the protuberance 51d of triangle forms 2 in the side of conductive layer 51b, 51c, forms 2 at opposite side, adds up to form 4, thrusts among collector body 22b, the 22c that comprises macromolecular material.Thus, between wiring substrate 50 and collector body 22b, 22c, produce fixed effect.Its result can improve the vibration resistance characteristic of wiring substrate 50.
Shuo Ming the 4th execution mode is identical with the 3rd execution mode as mentioned above, reaches following effect.
(a) be used to export the wiring substrate of monocell current potential, by adjacent collector body clamping.Thus, owing to become one at the textural wiring substrate and clamping wiring substrate and adjacent collector body of making, wiring substrate is difficult for peeling off from collector body.Its result is even locate also can prevent loose contact owing to vibration or hot the generation under the situation of stress on the composition surface of wiring substrate and collector body.
(b) the 2nd connecting portion is arranged on the centre of adjacent collector body.Thus, owing to can disperse stress equably, so can keep the contacting of place, composition surface of collector body and wiring substrate well to the stacked direction on the composition surface between wiring substrate and the collector body.
(c) sum of the 1st connecting portion is more than or equal to half of sum of the generating monocell that key element comprised, and less than the sum of monocell.Thus, owing to cut down the sum of wiring substrate, so can cut down the shared area of wiring substrate.In addition, owing to cut down the sum of wiring substrate, so can cut down the activity duration (productive temp) that is used to install wiring substrate.
(d) battery pack of present embodiment is connected a plurality of with combination in parallel above-mentioned ambipolar secondary cell series, parallel or series connection.Thus, peel off from collector body owing to can prevent wiring substrate, so can keep battery functi on well.Its result, the durability of raising battery.
(e) vehicle of present embodiment carries as driving above-mentioned ambipolar secondary cell or above-mentioned battery pack with power supply.Thus, owing to improved the durability of battery, improve the reliability of vehicle.
(f) sealed plastic packaging of the 1st connecting portion has jog on stacked direction.Thus, owing between the 1st connecting portion and sealing, produce fixed effect, so can improve the vibration resistance characteristic of wiring substrate.
(g) the 1st connecting portion has protuberance at least one side, and thrusts in the collector body that comprises macromolecular material.Thus, owing between the 1st connecting portion and collector body, produce fixed effect, so can improve the vibration resistance characteristic of wiring substrate.
As mentioned above, in execution mode, ambipolar secondary cell of the present utility model has been described.But certainly, the utility model, in the scope of its technological thought, those skilled in the art can append aptly, are out of shape and omit.
For example, in the 1st～the 4th above-mentioned execution mode, situation about being formed between collector body 22b and the collector body 22c at the 2nd connecting portion 52 is illustrated.But the 2nd connecting portion is not limited to above-mentioned situation, and for example, the 2nd connecting portion 52 also can be formed on the position of the close collector body 22b between collector body 22b and collector body 22c, perhaps near on the position of collector body 22c.
In addition, in the above-mentioned the 3rd and the 4th execution mode,, have 2 at opposite side at the protuberance that to have 2 sections be triangle of the side at the 1st connecting portion 51, add up to situation to be illustrated, but the quantity of protuberance and formation are not limited to above-mentioned situation with 4.
In addition, example illustrates ambipolar lithium rechargeable battery and is illustrated in each above-mentioned execution mode.But the utility model is not limited to ambipolar lithium rechargeable battery, so long as have the battery of the structure that monocell is stacked, which kind of battery can be suitable for.
Claims (5)
1. ambipolar secondary cell is characterized in that having:
The generating key element, it is laminated bipolar electrode via dielectric substrate, and this bipolar electrode is to form positive electrode active material layer in a side of collector body, forms at another side formation negative electrode active material layer;
The 1st connecting portion, it is held between described collector body adjacent on the stacked direction, forms the conductive layer that contacts with described collector body on the two sides of insulating barrier; And
The 2nd connecting portion, it is configured between the described adjacent collector body, is used for exporting via described the 1st connecting portion the current potential of described collector body.
2. ambipolar secondary cell according to claim 1 is characterized in that,
Described the 2nd connecting portion is arranged on the centre of described adjacent collector body.
3. ambipolar secondary cell according to claim 1 is characterized in that,
Also have sealing, it is configured in the circumference of described generating key element, with described generating key element sealing,
Described the 1st connecting portion is had jog by described sealing plastic packaging on described stacked direction.
4. ambipolar secondary cell according to claim 1 is characterized in that,
Described the 1st connecting portion has protuberance at least one side, described protuberance thrusts in the described collector body that contains macromolecular material.
5. according to any described ambipolar secondary cell in the claim 1 to 4, it is characterized in that,
The sum of described the 1st connecting portion, half of the sum of the monocell that is comprised more than or equal to described generating key element, and less than the sum of described monocell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-161110 | 2009-07-07 | ||
| JP2009161110A JP2011018481A (en) | 2009-07-07 | 2009-07-07 | Bipolar secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201789041U true CN201789041U (en) | 2011-04-06 |
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ID=43596118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202558058U Expired - Fee Related CN201789041U (en) | 2009-07-07 | 2010-07-07 | Bipolar secondary battery |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011018481A (en) |
| CN (1) | CN201789041U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103548196A (en) * | 2011-05-27 | 2014-01-29 | 丰田自动车株式会社 | Bipolar all-solid-state battery |
| WO2014134783A1 (en) * | 2013-03-05 | 2014-09-12 | 神华集团有限责任公司 | Bipolar battery, manufacturing method thereof and vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6750389B2 (en) * | 2016-08-16 | 2020-09-02 | トヨタ自動車株式会社 | Bipolar battery |
-
2009
- 2009-07-07 JP JP2009161110A patent/JP2011018481A/en active Pending
-
2010
- 2010-07-07 CN CN2010202558058U patent/CN201789041U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103548196A (en) * | 2011-05-27 | 2014-01-29 | 丰田自动车株式会社 | Bipolar all-solid-state battery |
| CN103548196B (en) * | 2011-05-27 | 2016-03-02 | 丰田自动车株式会社 | bipolar all-solid-state battery |
| WO2014134783A1 (en) * | 2013-03-05 | 2014-09-12 | 神华集团有限责任公司 | Bipolar battery, manufacturing method thereof and vehicle |
| CN105009353A (en) * | 2013-03-05 | 2015-10-28 | 神华集团有限责任公司 | Bipolar battery, manufacturing method thereof and vehicle |
| CN105009353B (en) * | 2013-03-05 | 2017-05-03 | 神华集团有限责任公司 | Bipolar battery, manufacturing method thereof and vehicle |
| US9979045B2 (en) | 2013-03-05 | 2018-05-22 | Shenhua Group Corporation Limited | Biopolar battery, manufacturing method thereof and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011018481A (en) | 2011-01-27 |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20140707 |
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| EXPY | Termination of patent right or utility model |