CN103268928A - Bipolar battery and bipolar energy storage apparatus - Google Patents
Bipolar battery and bipolar energy storage apparatus Download PDFInfo
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- CN103268928A CN103268928A CN2013100894334A CN201310089433A CN103268928A CN 103268928 A CN103268928 A CN 103268928A CN 2013100894334 A CN2013100894334 A CN 2013100894334A CN 201310089433 A CN201310089433 A CN 201310089433A CN 103268928 A CN103268928 A CN 103268928A
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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 invention discloses a bipolar battery and a bipolar energy storage apparatus. By the composite bipolar plates with a recessed gap structure and insulation isolation frames with a recessed gap structure, liquid or colloid electrolyte can be conveniently injected into the bipolar battery through an injection port in the process of forming the bipolar battery by the composite bipolar plates; and then the bipolar energy storage apparatus is formed by sealing; the bipolar energy storage apparatus can be designed as a battery pack or a super capacitor assembly, and the combination in series or in parallel can save a great amount of external connection leads, reduce energy consumption and needs no complex monitoring and management system; and the cost can be greatly reduced. The manufacture method of the invention is mature and reliable, which can omit the procedure of pole ear welding and has advantages of small work current density, small caloric power; good uniform consistency, high reliability, and long service life etc.
Description
Technical field
The present invention relates to battery and make the field, concrete is a kind of bipolar battery and bipolarity energy storage device.
Background technology
Advantages such as lithium ion battery has cell operating voltage height, specific energy height, self discharge is little, operating temperature range is broad, environmental pollution is little, obtained extensive use at aspects such as communication, portable electronics, and also generally believed it is one of ideal source of electric motor car power.Yet, the power-type lithium ion battery of traditional structure also has its shortcoming: can not carry out high-power discharging and recharging, otherwise can be easy to thermal runaway takes place and cause burning or safety issues such as blast, and the cell capacity is more big, security risk is more high, therefore, the power-type lithium ion battery capacity of traditional structure and power all should not design too big; Simultaneously, in order to satisfy occasions such as electric motor car to the application demand of electrical source of power capacity and operating voltage, tens even a hundreds of cell need be carried out connection in series-parallel and be combined to form big capacity, high-tension batteries or module, but because the consistency difference between each cell and the restriction of battery screening method, the overall performance performance can not show a candle to cell after causing battery combination, the active volume and the power that show as battery pack all decline to a great extent, cycle life also shortens, problems such as security risk increase, and the battery pack of cell One's name is legion has also proposed requirements at the higher level to batteries management system BMS; Above-mentioned shortcoming becomes its principal element of being used widely in the power field of restriction.The main cause that causes lithium ion battery the problems referred to above is because the heating of battery and the inhomogeneities of inside battery chemical reaction cause.Existing lithium ion battery is owing to adopt organic electrolyte, and its internal resistance is more a lot of greatly than the battery of water solution system; And its structure still takes traditional pole plate to provide or receive the version (as lead acid accumulator etc.) of electronics, lug afflux water conservancy diversion, like this, all different in its current density between the different pole plate of inside battery and between with the different parts of a slice pole plate and heat dissipation environment, the extent of reaction of active material and degree of aging are also different, thereby are easy to occur the non-uniformity problem of inside battery reaction; And because lug is battery and the extraneous main carrier that carries out the energy transmission, in the large current density electric process, it is overheated to be easy to occur, and makes the bulk temperature of battery higher, causes its high rate during charging-discharging and cycle performance variation, also occurs thermal runaway easily.If current density was also very little when battery capacity very little (as battery of mobile phone), battery discharged and recharged reaction, this species diversity of inside battery also is not enough to cause consequence at short notice so, but the life-span of battery has shortened beyond doubt.When battery capacity increases, because we are in the design battery, by measure multiplying power design work electric current all traditionally, like this caloric value of battery just with square being directly proportional of capacity, and the inhomogeneities of inside battery and all deteriorations rapidly of heat dissipation environment, so when battery greatly after certain capacity, the reliability of battery will reduce rapidly, even catastrophic consequence occurs.Though can be by optimizing the extreme ear structure design, adopt electrical and thermal conductivity can better the lug material can improve the charge-discharge magnification performance of battery to a certain extent, and improve its rate of heat dispation, but still can not fundamentally solve inside battery reaction heterogeneity and the inhomogeneous problem of heat radiation.
If change the structure of battery, namely change bipolar structure into by the lug diversion mode, situation is just different fully.At first, tens times of the conductive paths of electronics even hundred times ground shortens, and tens times of conductive areas even hundred times ground increase, thus ohm heat drop that makes battery to can ignoring, and the heat dissipation environment of each part of inside battery can be accomplished basically identical; Secondly, each position of each sheet pole plate of battery, each sheet pole plate, current density all equates, and current density also can be very little, will there be the active material extent of reaction harmonious problem different with degree of aging in inside battery like this; In addition, for capacity, battery that power requirement is big, battery of electric vehicle for example, bipolar battery has special advantages, because this structure of bipolarity is fit to the low capacity high voltage of battery.Battery pack for certain power requirement, voltage is more high, mean that electric current or current density are more little, and (they are generally by 120V or 220V design to be conducive to supporting motor, electrical equipment and control system, if battery voltage is too low, also to consider design current converting means and increasing apparatus, in any case and, big electric current all is unfavorable for performance and the battery life of battery capacity).Because current density further reduces, ambipolar high-power lithium ion battery group still can be higher than battery of mobile phone specific energy, the life-span is longer, safety and reliability.For the structure of bipolar battery, lead acid accumulator research is more, is difficult to but lead acid accumulator can not find suitable bipolar plates for the moment use.For lithium ion battery, the baseplate material of bipolar plates is out of question certainly, but the thickness of lithium ion battery pole plate and active material is all very little, have only about 100 μ m, if the structure by traditional bipolarity lead acid accumulator, in so little size, arrange liquid injection port almost not accomplish, even done liquid injection port because the viscosity of organic electrolyte greatly also can not be finished the injection of electrolyte, therefore must change the version of bipolar battery.
Equally, ultracapacitor and Ni-MH battery etc. also all are to use energy storage component very widely, but because the operating voltage of monomer assembly is all lower at present, also needing provides high voltage by many tandem compounds, performance and life-span after combinations matches directly has influence in groups, this guarantees all pressures problem of every monomer electric capacity with regard to the very complicated circuit of needs, thereby cost is also higher.If be designed to bipolar structure, have compact conformation, internal resistance is low, CURRENT DISTRIBUTION is even, specific energy is high, the specific power advantages of higher, the connection in series-parallel that not only can optimize energy storage component connects, omit the lug welding sequence, reduce and connect lead, also can reduce the internal resistance of assembly significantly, greatly improve the use that its power output capacity is more suitable for the electric motor car electrical source of power.But bipolar structure faces the problem identical with lithium ion battery equally, namely is difficult to the suitable liquid injection port of design in paper tinsel band-type electrode structure.
Summary of the invention
The objective of the invention is to provide a kind of liquid or colloidal electrolyte of making things convenient for to enter bipolar electrode bipolar battery inside and the bipolar battery that the uniformity consistency of battery is good, reliability is high, the life-span prolongs significantly and bipolarity energy storage device.
For achieving the above object, the bipolar battery that the present invention is designed, it comprises positive end plate, the negative end plate of rectangle and is connected a plurality of composite dual-electrode plates that are arranged side by side between positive end plate, the negative end plate that its special character is: described composite dual-electrode plates comprises the electrically-conductive backing plate that is provided with the matrix breach and the positive electrode active material layer that is laid in the electrically-conductive backing plate two sides respectively and negativity active material layer; The concave indentation of described a plurality of electrically-conductive backing plates that the are arranged side by side formation guiding gutter that is connected; Also be equipped with the sealed insulation frame on each electrically-conductive backing plate two sides, described sealed insulation frame is aperture arrangement at the edge of the described positive electrode active material layer in electrically-conductive backing plate upper edge and negativity active material layer, and described opening is corresponding with described concave indentation; One side of described positive end plate and negative end plate is laid with positive electrode active material layer and negative electrode active material layer respectively, and described two sealed insulation frames are aperture arrangement along the edge of the positive electrode active material layer on the positive end plate and the negativity active material layer on the negative end plate respectively; Also be provided with barrier film between described positive end plate and composite dual-electrode plates, composite dual-electrode plates and negative end plate, the adjacent composite dual-electrode plates, above-mentioned bipolar battery constitutes a bipolarity energy-storage units.
As preferred version, the area of described barrier film is not less than the area of described positive electrode active material layer and negativity active material layer.
Further, the top of described positive end plate and negative end plate is equipped with the pole exit.
Further, also be equipped with bolt hole on four of described positive end plate and negative end plate angles.
It is a kind of based on the bipolarity energy storage device as above-mentioned bipolar battery that the present invention also provides, comprise rectangle energy storage component groove and the seal cover board that places energy storage component groove top, its special character is: be provided with a plurality of unit grooves in the described energy storage component groove, cut apart by division board between described a plurality of unit grooves; Be provided with a plurality of in each unit groove as above-mentioned bipolarity energy-storage units.
As preferred version, be provided with six unit grooves in the described energy storage component groove.
Further, described seal cover board is provided with two pole fairleads, and described pole fairlead is positioned on same limit of seal cover board.
Further, also be provided with at least one safety valve on the described seal cover board.
The invention has the advantages that: the present invention can be by changing bipolar electrode quantity in electrode design size and the bipolar battery, design the battery of different rated capacities and voltage, be characterized in that working current density is little, but power characteristic and specific energy still are higher than traditional lithium ion battery, and the caloric value of battery little (because caloric value and operating current square be directly proportional), the uniformity consistency of battery is good, reliability is high, the life-span prolongs significantly.In addition, the production technology of battery is simple, and master operation is identical with existing technology, and the equipment and the raw material that only need to increase seldom on the basis of existing technology just can be produced, and the technology of lug welding can be omitted.The battery of Sheng Chaning is actually a battery pack like this, adopt a large amount of cell series and parallels to compare with existing lithium ion battery group, it has omitted a large amount of outsides and has connected lead and energy loss, does not also need complicated monitoring and management system, and cost also can descend significantly.
Description of drawings
Fig. 1 is the structural representation of facing of electrically-conductive backing plate of the present invention.
Fig. 2 is the side-looking structural representation of electrically-conductive backing plate of the present invention.
Fig. 3 is the structural representation of facing of composite dual-electrode plates of the present invention.
Fig. 4 is the side-looking structural representation of composite dual-electrode plates of the present invention.
Fig. 5 be band sealed insulation frame of the present invention composite dual-electrode plates face structural representation.
Fig. 6 is the side-looking structural representation of the composite dual-electrode plates of band sealed insulation frame of the present invention.
Fig. 7 is the structural representation of anode composite end plate of the present invention.
Fig. 8 is the structural representation of composite negative pole end plate of the present invention.
Fig. 9 is the package assembly schematic diagram of bipolar battery of the present invention.
Figure 10 is the structural representation that bipolar battery assembling of the present invention forms " U " type guiding gutter.
Figure 11 is the structural representation of bipolarity energy storage device of the present invention.
Among the figure: 1, electrically-conductive backing plate; 2, positive electrode active material layer; 3, negativity active material layer; 4, sealed insulation frame; 5, positive end plate; 6, bolt hole; 7, negative end plate; 8, barrier film; 9, seal cover board; 10, safety valve; 11, bipolar battery; 12, liquid injection port; 13, guiding gutter; 14, energy storage component groove; 15, division board; 16, pole fairlead, 17, unit groove.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing with according to figure embodiment.
Bipolar battery shown in Fig. 1 to 10, it comprises positive end plate 5, the negative end plate 7 of rectangle and is connected a plurality of composite dual-electrode plates that are arranged side by side between positive end plate 5, the negative end plate 7 that composite dual-electrode plates comprises the electrically-conductive backing plate 1 that is provided with the matrix breach and is laid in positive electrode active material layer 2 and the negativity active material layer 3 of electrically-conductive backing plate 1 two sides respectively; The concave indentation of a plurality of electrically-conductive backing plates that are arranged side by side 1 is connected and forms guiding gutter 13; Also be equipped with sealed insulation frame 4 on each electrically-conductive backing plate 1 two sides, sealed insulation frame 4 is aperture arrangement at the edge of electrically-conductive backing plate 1 upper edge positive electrode active material layer 2 and negativity active material layer 3, and opening is corresponding with concave indentation; One side of positive end plate 5 and negative end plate 7 is laid with positive electrode active material layer 2 respectively and 3, two sealed insulation frames 4 of negative electrode active material layer are aperture arrangement along the edge of the positive electrode active material layer 2 on the positive end plate 5 and the negativity active material layer 3 on the negative end plate 7 respectively; Also be provided with barrier film 8 between positive end plate 5 and composite dual-electrode plates, composite dual-electrode plates and negative end plate 7, the adjacent composite dual-electrode plates, above-mentioned bipolar battery constitutes a bipolarity energy-storage units.
The area of above-mentioned barrier film 8 is not less than the area of positive electrode active material layer 2 and negativity active material layer 3; The top of positive end plate 5 and negative end plate 7 is equipped with the pole exit; Also be equipped with bolt hole 6 on four angles of positive end plate 5 and negative end plate 7.
Bipolarity energy storage device as shown in figure 11 comprises rectangle energy storage component groove 14 and the seal cover board 9 that places energy storage component groove 14 tops, is provided with a plurality of unit grooves 17 in the energy storage component groove 14, is cut apart by division board 15 between a plurality of unit grooves 17; Be provided with a plurality of as bipolarity energy-storage units arbitrary in the claim 1 to 4 in each unit groove 17.
Be provided with six unit grooves 17 in the above-mentioned energy storage component groove 14; Seal cover board 9 is provided with two pole fairleads 16, and pole fairlead 16 is positioned on 9 same limits of seal cover board; Also be provided with at least one safety valve 10 on the seal cover board 9.
The method of making above-mentioned bipolarity energy storage device is as follows:
Method one: select for use the copper aluminum binary composite insulating foil band of the about 20 μ m of thickness as electrically-conductive backing plate or the collector 1 of lithium ion battery, press the die-cut formation in position shown in Figure 1 " recessed " type breach at electrically-conductive backing plate 1.The preparation of positive active material is with LiMn
2O
4: electrically conductive graphite: binding agent Kynoar (PVDF) is that 90:5:5 prepares burden by the quality proportioning, is dissolved in the N-methyl pyrrolidone (NMP), mixes, and makes the positive active material slurry; The preparation of negative electrode active material is with sodium carboxymethylcellulose (CMC): polystyrene fourth rubber (SBR): composite graphite is that 3:5:92 prepares burden by the quality proportioning, is dissolved in the deionized water, mixes, and makes the negative electrode active material slurry.Respectively the positive active material slurry is coated on the surface at copper aluminium composite conducting substrate surface and is a side of metallic aluminium, the negative electrode active material slurry is coated on the surface is a side of metallic copper, the wet about 300 μ m of coating layer thickness of control slurry, vacuum degassing is dried, is rolled and make bipolar electrode (as shown in Figure 2) under the uniform temperature condition then.Select the about 2mm of thickness for use, the metallic plate 5 that its surface is metallic aluminum material is as positive end plate (containing the Positive Poles exit), the positive active material slurry is coated on its surface, the wet about 300 μ m of coating layer thickness of control slurry, vacuum degassing is dried, is rolled and make positive end plate under the uniform temperature condition then; Select the about 2mm of thickness for use, the metallic plate 6 that its surface is metallic copper material is as negative end plate (containing negative pole pole exit), the negative electrode active material slurry is coated on its surface, the wet about 300 μ m of coating layer thickness of control slurry, vacuum degassing is dried, is rolled and make negative end plate under the uniform temperature condition then.Adopt PETG (PET) film material of the about 0.8mm of thickness to make insulating frame 4(as shown in Figure 3), wherein the inside casing of insulating frame 4 is designed to and the active material that applies on the bipolar electrode sheet can be surrounded shape fully, leaving and taking breach with electrically-conductive backing plate 1 corresponding " recessed " type gap position, standby as liquid injection port.Side at insulating frame applies one deck adhesive material, then it is sticked to the periphery of positive active material on the bipolar electrode sheet, forms the bipolar electrode (as shown in Figure 3) that has insulating frame; Simultaneously, insulating frame is sticked to the active material periphery of positive and negative electrode end sheet surface respectively, form the compound positive and negative electrode end plate (shown in Fig. 4,5) that has insulating frame.Tailor battery diaphragm by insulating frame 4 inside casing sizes, the Outside Dimensions of battery diaphragm 8 is slightly larger than insulating frame 4 inside casings.In advance at insulating frame surface-coated one deck adhesive material or the binding agent promoter material of complex bipolar electrode, then in jig according to anode composite end plate 5, barrier film 8, complex bipolar electrode, barrier film 8, complex bipolar electrode,, elements such as barrier film 8, composite negative pole end plate 7 successively in accordance with regulations order stack (bipolar battery and battery pack assembling schematic diagram are as shown in Figure 6).Under certain heating condition, make the binder material hot melt become sticky, under the heating pressurized conditions, adopt laminating technology that compound positive and negative electrode end plate and insulating frame, insulating frame and adjacent bipolar electrode sheet are bonded into one mutually then, form the bipolar batteries 11 of organizing element cells composition through the fastening back of handling more.The assembling back is linked into an integrated entity by electrically-conductive backing plate 1 correspondence " recessed " type breach and forms " U " guiding gutter 13 at bipolar battery 11, simultaneously, at insulating frame 4 corresponding gap positions, forms liquid injection port 12.After vacuum degassing drying under the uniform temperature condition, be lower than in water content under the dry atmospheric condition of 100ppm, by liquid injection port 12, be the LiPF of 1mol/L with concentration
6/ EC+DMC+EMC(1:1:1) electrolyte injects bipolar battery 11 inside, with malthoid the residual electrolyte in liquid injection port 12 positions is dried, and carries out the preliminary filling discharge process after shelving a period of time.Bipolar battery 11 is inverted, is poured out unnecessary electrolyte, with malthoid the residual electrolyte in liquid injection port 12 positions is dried, then bipolar battery 11 is positioned in the battery case 14, seal, be the bipolar battery group.
Method two: select for use the copper nickel aluminium ternary composite insulating foil band of the about 20 μ m of thickness as electrically-conductive backing plate or the collector 1 of lithium ion battery, press the die-cut formation in position shown in Figure 1 " U " type or " recessed " type breach at electrically-conductive backing plate 1.The preparation of positive active material is with LiFePO
4: conductive black: flake graphite: binding agent Kynoar (PVDF) is that 91:2:2:5 prepares burden by the quality proportioning, is dissolved in the N-methyl pyrrolidone (NMP), mixes, and makes the positive active material slurry; The preparation of negative electrode active material is with binding agent Kynoar (PVDF): conductive black: lithium titanate (Li
4Ti
5O
12) be that 4:10:86 prepares burden by the quality proportioning, be dissolved in the N-methyl pyrrolidone (NMP), mix, make the negative electrode active material slurry.Respectively the positive active material slurry is coated on the surface at copper nickel aluminium composite conducting substrate surface and is a side of metallic aluminium, the negative electrode active material slurry is coated on the surface is a side of metallic nickel, the wet about 100 μ m of coating layer thickness of control slurry, vacuum degassing is dried, is rolled and make bipolar electrode (as shown in Figure 2) under the uniform temperature condition then.Select the about 2mm of thickness for use, the metallic plate 5 that its surface is metallic aluminum material is as positive end plate (containing the Positive Poles exit), the positive active material slurry is coated on its surface, the wet about 100 μ m of coating layer thickness of control slurry, vacuum degassing is dried, is rolled and make positive end plate under the uniform temperature condition then; Select the about 2mm of thickness for use, the metallic plate 6 that its surface is metallic nickel materials is as negative end plate (containing negative pole pole exit), the negative electrode active material slurry is coated on its surface, the wet about 300 μ m of coating layer thickness of control slurry, vacuum degassing is dried, is rolled and make negative end plate under the uniform temperature condition then.Adopt polyimides (PA) film material of the about 0.8mm of thickness to make insulating frame 4(as shown in Figure 3).Electrolyte adopts the LiPF of 1mol/L
6/ EC+DEC(1:1).Other each production process, comprise insulating frame 4 shape design and with the filling and seal etc. all reference example 1 and carry out of the encapsulation of bonding, the bipolar battery of bipolar electrode, both positive and negative polarity end plate and electrolyte.
Method three: the preparation of positive active material is with LiNi
1/3Co
1/3Mn
1/3O
2: conductive black: binding agent Kynoar (PVDF) is that 90:5:5 prepares burden by the quality proportioning, is dissolved in the N-methyl pyrrolidone (NMP), mixes, and makes the positive active material slurry; The preparation of negative electrode active material is with high-ratio surface activated carbon (AC): acetylene black: polyfluortetraethylene of binding element emulsion (PTFE, solid content 60%) be that 90:5:5 prepares burden by the quality proportioning, be dissolved in the absolute ethyl alcohol, mix, make the negative electrode active material slurry.Other each production process, but all reference example 1 is carried out.
Method four: the preparation of positive active material is that high-density ball-shape nickel hydroxide, conductive agent CoO, adhesive carboxymethyl cellulose (CMC) are prepared burden by a certain percentage, mixes with appropriate amount of deionized water, makes the positive active material slurry; The preparation of negative electrode active material is with AB
5Type hydrogen-storage alloy powder, conductive black are prepared burden by a certain percentage, are dissolved in the polyvinyl alcohol water solution that contains mass fraction about 5%, mix, and make the negative electrode active material slurry.Electrically-conductive backing plate adopts the nickel plating stainless steel band, and electrolyte adopts the KOH aqueous solution (mass fraction 30%) that contains LiOH.Other each production process, but equal reference example 1 or embodiment 2 carry out.
Method five: adopt copolymer (EVA) film membrane and the about 0.8mm polypropylene of thickness (PP) film of the ethylene-vinyl acetate of the about 20 μ m of thickness, all carry out punching out by the size design of insulating frame 4.In jig according to anode composite end plate 5, EVA glued membrane, PP film frame 4, barrier film 8, EVA glued membrane, complex bipolar electrode, EVA glued membrane, PP film frame 4, barrier film 8, EVA glued membrane, complex bipolar electrode,, elements such as EVA glued membrane, PP film frame 4, barrier film 8, EVA glued membrane, composite negative pole end plate 7 successively in accordance with regulations order stack.Under certain heating condition, make EVA glued membrane hot melt become sticky, under the heating pressurized conditions, adopt laminating technology that compound positive and negative electrode end plate and insulating frame, insulating frame and adjacent bipolar electrode sheet are bonded into one mutually then, form the bipolar batteries 11 of organizing unit blocks composition through the fastening back of handling more.
The technical scope of this invention is not limited to the content on the specification, be enlightenment with above-mentioned foundation thought embodiment of the present invention, by above-mentioned description, can be in the scope that does not depart from this invention technological thought, carry out various change and modification, comprise that the material of composite conducting substrate changes, electrolyte and the variation of additive types and proportioning in the variation, electrolyte of the shape of " recessed " type breach or number change, both positive and negative polarity active material and proportioning, the variation of insulating frame material etc. all belong to claim scope of the present invention on the electrically-conductive backing plate.
Claims (8)
1. bipolar battery, it comprises positive end plate (5), the negative end plate (7) of rectangle and is connected a plurality of composite dual-electrode plates that are arranged side by side between positive end plate (5), the negative end plate (7) that it is characterized in that: described composite dual-electrode plates comprises the electrically-conductive backing plate (1) that is provided with the matrix breach and is laid in positive electrode active material layer (2) and the negativity active material layer (3) of electrically-conductive backing plate (1) two sides respectively; The concave indentation of described a plurality of electrically-conductive backing plates that are arranged side by side (1) is connected and forms guiding gutter (13); On each electrically-conductive backing plate (1) two sides, also be equipped with sealed insulation frame (4), described sealed insulation frame (4) is aperture arrangement at the edge of the described positive electrode active material layer in electrically-conductive backing plate (1) upper edge (2) and negativity active material layer (3), and described opening is corresponding with described concave indentation; One side of described positive end plate (5) and negative end plate (7) is laid with positive electrode active material layer (2) and negative electrode active material layer (3) respectively, and described two sealed insulation frames (4) are aperture arrangement along the edge of the positive electrode active material layer (2) on the positive end plate (5) and the negativity active material layer (3) on the negative end plate (7) respectively; Also be provided with barrier film (8) between described positive end plate (5) and composite dual-electrode plates, composite dual-electrode plates and negative end plate (7), the adjacent composite dual-electrode plates, above-mentioned bipolar battery constitutes a bipolarity energy-storage units.
2. bipolar battery according to claim 1, it is characterized in that: the area of described barrier film (8) is not less than the area of described positive electrode active material layer (2) and negativity active material layer (3).
3. bipolar battery according to claim 1, it is characterized in that: the top of described positive end plate (5) and negative end plate (7) is equipped with the pole exit.
4. bipolar battery according to claim 1 is characterized in that: also be equipped with bolt hole (6) on four angles of described positive end plate (5) and negative end plate (7).
5. one kind based on the bipolarity energy storage device of bipolar battery according to claim 1, comprise rectangle energy storage component groove (14) and place the seal cover board (9) on energy storage component groove (14) top, it is characterized in that: be provided with a plurality of unit grooves (17) in the described energy storage component groove (14), cut apart by division board (15) between described a plurality of unit grooves (17); Be provided with a plurality of as arbitrary described bipolarity energy-storage units in the claim 1 to 4 in each unit groove (17).
6. bipolarity energy storage device according to claim 5 is characterized in that: be provided with six unit grooves (17) in the described energy storage component groove (14).
7. bipolarity energy storage device according to claim 5, it is characterized in that: described seal cover board (9) is provided with two pole fairleads (16), and described pole fairlead (16) is positioned on same limit of seal cover board (9).
8. bipolarity energy storage device according to claim 5 is characterized in that: also be provided with at least one safety valve (10) on the described seal cover board (9).
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Cited By (6)
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| CN104916864A (en) * | 2015-05-08 | 2015-09-16 | 曾碚凯 | Copper and aluminum bimetal bipolar plate type transitional unit lithium battery, high-voltage and low-internal resistance battery stack formed through serially connecting batteries, and packaging method of battery stack |
| CN108598360A (en) * | 2018-05-15 | 2018-09-28 | 崔晓迪 | A kind of preparation method of negative electrode of lithium ion battery |
| CN109786753A (en) * | 2018-12-11 | 2019-05-21 | 广东工业大学 | A kind of bipolarity sodium-ion battery assembly and its assembling, recovery method |
| CN112670554A (en) * | 2020-12-24 | 2021-04-16 | 合肥国轩高科动力能源有限公司 | Lamination and packaging method of bipolar battery |
| CN112886144A (en) * | 2019-11-30 | 2021-06-01 | 华为技术有限公司 | Separating membrane, battery combination and electric equipment |
| CN113506879A (en) * | 2021-04-15 | 2021-10-15 | 淄博火炬能源有限责任公司 | Light bipolar lead-acid storage battery and preparation method thereof |
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| EP1487034B1 (en) * | 2003-06-12 | 2012-03-21 | Nissan Motor Co., Ltd. | Bipolar battery and related method |
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| CN201084789Y (en) * | 2007-07-24 | 2008-07-09 | 雷天电池技术有限公司 | A high-voltage dynamic lithium ion chargeable battery |
| CN101719562A (en) * | 2009-12-25 | 2010-06-02 | 中国科学院电工研究所 | Electrical core of high-voltage battery |
| CN201886904U (en) * | 2010-11-30 | 2011-06-29 | 苏州大学 | Laminated high-voltage mixing electrochemical capacitor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916864A (en) * | 2015-05-08 | 2015-09-16 | 曾碚凯 | Copper and aluminum bimetal bipolar plate type transitional unit lithium battery, high-voltage and low-internal resistance battery stack formed through serially connecting batteries, and packaging method of battery stack |
| CN104916864B (en) * | 2015-05-08 | 2018-01-16 | 深圳藈花新能源科技有限公司 | The height that a kind of bipolar template transitionality unit lithium battery of Cu-Al bimetal and its series connection are formed forces down changeable internal damp bvattery heap and method for packing |
| CN108598360A (en) * | 2018-05-15 | 2018-09-28 | 崔晓迪 | A kind of preparation method of negative electrode of lithium ion battery |
| CN109786753A (en) * | 2018-12-11 | 2019-05-21 | 广东工业大学 | A kind of bipolarity sodium-ion battery assembly and its assembling, recovery method |
| CN112886144A (en) * | 2019-11-30 | 2021-06-01 | 华为技术有限公司 | Separating membrane, battery combination and electric equipment |
| CN112886144B (en) * | 2019-11-30 | 2023-06-20 | 华为技术有限公司 | Separation membrane, battery combination and electric equipment |
| CN112670554A (en) * | 2020-12-24 | 2021-04-16 | 合肥国轩高科动力能源有限公司 | Lamination and packaging method of bipolar battery |
| CN112670554B (en) * | 2020-12-24 | 2022-09-06 | 合肥国轩高科动力能源有限公司 | Lamination and packaging method of bipolar battery |
| CN113506879A (en) * | 2021-04-15 | 2021-10-15 | 淄博火炬能源有限责任公司 | Light bipolar lead-acid storage battery and preparation method thereof |
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| CN103268928B (en) | 2015-09-23 |
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