WO2008010564A1 - Batterie secondaire - Google Patents
Batterie secondaire Download PDFInfo
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- WO2008010564A1 WO2008010564A1 PCT/JP2007/064301 JP2007064301W WO2008010564A1 WO 2008010564 A1 WO2008010564 A1 WO 2008010564A1 JP 2007064301 W JP2007064301 W JP 2007064301W WO 2008010564 A1 WO2008010564 A1 WO 2008010564A1
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- WIPO (PCT)
- Prior art keywords
- active material
- electrode active
- negative electrode
- secondary battery
- positive electrode
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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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
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a secondary battery configured by stacking a plurality of unit batteries.
- a secondary battery in which a plurality of battery cells each having a positive electrode and a negative electrode formed on the surface of an electrolyte layer are stacked via a current collector plate.
- Such secondary batteries are used as storage batteries, and are discharged by an electrode reaction that occurs between the positive and negative electrodes.
- the heat dissipation efficiency differs between the inner side and the end side of the secondary battery, and the temperature tends to increase toward the inner side of the secondary battery. For this reason, the electrode reaction of the battery cell located inside the secondary battery becomes active, the battery cell located inside the secondary battery deteriorates quickly, and the life of the secondary battery is shortened. There is a problem power S. ,
- the present invention has been made in view of the above problems, and a first object thereof is a secondary battery in which the heat dissipation efficiency differs depending on the position and the temperature of each battery cell varies. However, it is to provide a secondary battery in which the output variation such as the voltage and current amount of each battery cell is suppressed and the life is extended. A second object is to provide a secondary battery that is improved in the accuracy of identifying a defective battery cell.
- the secondary battery according to the present invention includes a plate-shaped electrolyte layer, a positive electrode formed on the first main surface of the electrolyte layer and including a positive electrode active material, and a second electrolyte layer.
- a secondary battery comprising: a unit battery having a negative electrode including a negative electrode active material formed on a main surface; and a conductive layer provided between the unit batteries, wherein the unit battery and a plurality of conductive films are stacked.
- the concentration of the positive electrode active material and the negative electrode active material is set according to the temperature distribution in the secondary battery.
- the unit battery includes a first unit battery and a second unit battery having a temperature higher than that of the first unit battery, and the concentration of the positive electrode active material and the negative electrode active material of the first unit battery is higher.
- the concentration of the positive electrode active material and the negative electrode active material of the second unit battery is lowered.
- the positive electrode further includes a first additive
- the negative electrode further includes a second additive, and the first additive and the second additive are added according to the temperature distribution in the secondary battery. Set the amount to be added.
- the secondary battery according to the present invention includes a plate-shaped electrolyte layer, a positive electrode including a positive electrode active material formed on the first main surface of the electrolyte layer, and a second main layer of the electrolyte layer.
- a unit battery comprising: a unit battery having a negative electrode including a negative electrode active material formed on a surface; and a conductive layer disposed between the unit batteries, wherein the unit battery and a plurality of conductive films are stacked.
- the temperature of the unit battery increases as it goes inward from the end face side of the secondary battery positioned in the stacking direction, and the concentrations of the positive electrode active material contained in the positive electrode and the negative electrode active material contained in the negative electrode become lower.
- the positive electrode actives included in the positive electrode and the negative electrode of each unit cell are set so that the output of each unit cell becomes the reference output, with the output of the unit cell positioned inward in the stacking direction of the unit cells as a reference output.
- Set the concentration of material and negative electrode active material Preferably, the concentration of the positive electrode active material and the negative electrode active material contained in the positive electrode and the negative electrode of each unit cell is set so that the output of each unit cell becomes the reference output, using the output of the unit cell located on the end face as a reference output.
- the concentration of the negative electrode active material and the positive electrode active material is set in accordance with the temperature distribution in the secondary battery, and the higher the unit battery, the positive electrode active material and the negative electrode active material.
- the output of each unit cell is made uniform by reducing the concentration of It is possible to suppress deterioration of only a specific unit battery.
- FIG. 1 is a cross-sectional view of a bipolar secondary battery according to the present embodiment.
- FIG. 2 is a graph showing the concentration distribution of the positive electrode active material and the negative electrode active material.
- Figure 3 is a graph showing the input / output value (current amount) distribution of the bipolar secondary battery when the concentration distributions of the positive electrode active material and the negative electrode active material are set as shown in FIG.
- FIG. 4 is a graph showing the output voltage distribution for each electrode sheet.
- FIG. 5 is a graph showing the temperature distribution of the bipolar 2 battery when the concentration distribution of the positive electrode active material and the negative electrode active material is set as shown in FIG.
- Fig. 6 shows the output of the electrode sheet 25 located on the end face of the bipolar secondary battery as the reference output, and the positive and negative electrodes of each electrode sheet 25 so that the output of each electrode sheet 25 becomes the reference output.
- 6 is a graph showing a concentration distribution when the concentrations of a positive electrode active material and a negative electrode active material contained are set.
- FIG. 7 is a graph showing the output current of each electrode sheet when the concentrations of the positive electrode active material and the negative electrode active material are set as shown in FIG.
- FIG. 8 is a graph showing the output voltage of each electrode sheet when the concentrations of the positive electrode active material and the negative electrode active material are set as shown in FIG.
- FIG. 9 is a graph showing the temperature distribution in the bipolar secondary battery when the concentrations of the positive electrode active material and the negative electrode active material are set as shown in FIG.
- FIG. 10 is a graph showing the concentration distribution of the positive electrode active material and the negative electrode active material of other electrode sheets, with the output of the electrode sheet positioned between the center portion and the end face of the bipolar secondary battery as a reference output. .
- FIG. 11 is a graph showing the output current of each electrode sheet when the concentrations of the positive electrode active material and the negative electrode active material are set as shown in FIG.
- FIG. 12 is a graph showing the output voltage of each electrode sheet when the concentrations of the positive electrode active material and the negative electrode active material are set as shown in FIG.
- FIG. 13 is a graph showing the temperature distribution in the stacking direction of the bipolar secondary battery in which the concentrations of the positive electrode active material and the negative electrode active material are set as shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a cross-sectional view of a bipolar secondary battery according to the present embodiment.
- the bipolar secondary battery 4 is formed by laminating a plurality of electrode sheets (unit cells) 25 via current collector foils (conductive films) 29.
- the bipolar secondary battery 4 has a substantially rectangular parallelepiped shape.
- the bipolar secondary battery 4 is housed in a casing (not shown), and is mounted on, for example, a hybrid vehicle or an electric vehicle.
- the bipolar secondary battery 4 includes a positive electrode current collector plate 23 provided on one end surface of the electrode sheet 25 in the stacking direction, and a negative electrode current collector plate 21 provided on the other end surface.
- the positive current collector plate 23 and the negative current collector plate 21 are provided with terminal portions to which wiring connected to external members such as a PCU (Power Control Unit) is connected. It protrudes toward.
- PCU Power Control Unit
- the end face side of the bipolar secondary battery 4 has higher heat dissipation efficiency than the central part of the bipolar secondary battery 4 .
- the electrode sheet 25 includes a plate-like electrolyte layer 27, a positive electrode 28 formed on one main surface of the electrolyte layer 27, and a negative electrode 26 formed on the other main surface. It has. Each electrode sheet 25 is connected in series via a current collector foil (conductive film) 29. Specifically, the negative electrode current collector plate 2 1 is in contact with the lower surface of the electrode sheet 2 5 n 1 is provided, an electrode sheet 25 n 2 adjacent to the electrode sheet 25 n 1 is provided via the conductive foil 29, and a plurality of electrode sheets are further laminated. An electrode sheet 25 (m is a positive number) is provided on the upper surface of the positive electrode current collector plate 23. In the present embodiment, m electrode sheets 25 are laminated. Yes.
- the negative electrode 26 is formed by applying a negative electrode active material or an additive to one surface of the current collector foil 29 by sputtering, and the positive electrode 28 is formed on the other surface of the current collector foil 29. It is formed by applying a positive electrode active material or an additive by sputtering.
- the concentration of the positive electrode active material contained in the positive electrode 28 and the concentration of the negative electrode active material contained in the negative electrode 26 are set according to the temperature distribution in the bipolar secondary battery 4 when the bipolar secondary battery 4 is driven. Yes.
- Another electrode sheet (second unit battery) 2 5 whose temperature is higher than that of one electrode sheet (first unit battery) 2 5 is one electrode sheet 2
- the concentration of positive electrode active material and negative electrode active material of 5 is set lower than the concentration of positive electrode active material and negative electrode active material of other electrode sheets 25.
- each electrode sheet 25 uniform, it is possible to suppress the deterioration of the specific electrode sheet 25, and to extend the life of the bipolar secondary battery 4. it can.
- the temperature of the portion located on the inner side in the stacking direction is higher than the portion positioned on the end face side in the stacking direction of the electrode sheet 25.
- the positive electrode active material of the positive electrode 28 and the negative electrode active material of the negative electrode 26 of the electrode sheet 25 are moved inwardly from the end surface side of the bipolar secondary battery 4 positioned in the stacking direction of the electrode sheet 25. It is preferable to make the concentration low. As a result, Even if temperature variations occur in the stacking direction of the electrode sheets 25, the output of each electrode sheet 25 can be made uniform.
- the content of the positive electrode active material in each positive electrode 28 can be adjusted.
- the additive contained in each positive electrode 28 (first additive) and the additive contained in the negative electrode 26 (second additive) A method for adjusting the content of) is considered.
- each positive electrode 2 8 increases from the inner side in the stacking direction of the electrode sheet 25 toward the end face side of the bipolar secondary battery 4.
- the content of additives contained in each negative electrode 26 is reduced, and the positive electrode active material contained in each positive electrode 28 and each negative electrode 26 are Increasing the content of the negative electrode active material contained.
- the concentration of the positive electrode active material and the negative electrode active material contained in the positive electrode 28 and the negative electrode 26 can be increased toward the end face side of the bipolar secondary battery 4, and the bipolar secondary battery 4
- the thickness of each positive electrode 28 and each negative electrode 26 decreases toward the end face side, and the bipolar secondary battery 4 can be configured compactly.
- the total mass of the positive electrode active material and additives constituting each positive electrode 28 may be varied while keeping the total mass of the negative electrode active material and the additives constituting each negative electrode 26 constant. In this way, by setting the concentrations of the positive electrode active material of each positive electrode 28 and the negative electrode active material of negative electrode 26, the volume does not fluctuate even when compared with conventional bipolar secondary batteries, and it has been used conventionally. Bipolar secondary battery casings can be used.
- FIG. 2 is a graph showing the concentration distribution of the positive electrode active material and the negative electrode active material.
- Fig. 3 shows the distribution of input / output values (current amount) of the bipolar secondary battery 4 when the concentration distribution of the positive electrode active material and the negative electrode active material is set as shown in Fig. 2, and Fig. 4 The output voltage distribution is shown for each electrode sheet.
- Fig. 5 shows a bipolar 2 battery when the concentration distribution of the positive electrode active material and the negative electrode active material is set as shown in Fig. 2.
- 4 is a graph showing a temperature distribution of 4. 2 to 13, the vertical axis represents each electrode sheet 25 nl to 25 nm shown in FIG. 1, and the electrode sheet 25 n 1 is positioned at the center in the stacking direction of the electrode sheet 25 n 1 to 25 nm. An electrode sheet is used.
- the concentration distribution of the positive electrode active material and the negative electrode active material in the stacking direction of the bipolar secondary battery 4 shown in FIG. 2 is set to correspond to the temperature distribution in the stacking direction of the bipolar secondary battery 4 shown in FIG. Yes.
- the output voltage and the output current amount of each electrode sheet 25 n 1 to 25 nm are substantially the same, and become a predetermined voltage and a predetermined current.
- the output voltage of each electrode sheet 25 ⁇ 1 to 25 nm becomes a predetermined voltage, so the output voltage of each electrode sheet 25 n 1 to 25 nm is sensed.
- the output of the electrode sheet 25 n 1 positioned inward in the stacking direction of the electrode sheet 25 nl to 25 nm is used as a reference output, and each electrode sheet 25 n 1 to 25 nm The output is set to be the reference output. Since the electrode sheet 25 n 1 located at the center of the bipolar secondary battery 4 tends to be hot during driving, the reference output also increases, and the total output voltage and current of the bipolar secondary battery 4 must be increased. Can do.
- the concentration distribution of the positive electrode active material and the negative electrode active material contained in the positive electrode 28 and the negative electrode 26 of the electrode sheet 25 n 1 located in the center of the electrode sheet 25 nl to 25 nm in the stacking direction is as follows.
- the concentration of positive electrode active material and negative electrode active material contained in the positive electrode 28 and negative electrode 26 of the electrode sheet 25 n 1 and 25 nm located on the end face of the pipeline secondary battery 4 is set to about 95%.
- Figure 6 shows the electrode sheet located on the end face of the bipolar secondary battery 4 25 n 1, 25 ⁇
- Each electrode sheet is included in the positive and negative electrodes of 25 n 1 to 25 nm so that the output of each electrode sheet 25 n 1 to 25 nm becomes the reference output, with m output as the reference output 6 is a graph showing the concentration distribution when the concentration of the positive electrode active material and the negative electrode active material is set, specifically, the positive electrode active material of 25 n 1, 25 nm positioned on the end face side, and The concentration of the negative electrode active material is about 85%, and the concentration of the positive electrode active material and the negative electrode active material of the electrode sheet 25 n 1 located in the center in the stacking direction is about 75%.
- the concentration of the positive electrode active material and the negative electrode active material in this way, the required amount of the positive electrode active material and the negative electrode active material can be reduced, and the bipolar secondary battery 4 is configured at low cost. be able to.
- FIG. 7 is a graph showing the output current of each electrode sheet 25 n 1 to 25 nm when the concentration of the positive electrode active material and the negative electrode active material is set as shown in FIG.
- FIG. 5 is a graph showing an output voltage of each electrode sheet 25 n 1 to 25 nm.
- FIG. 9 is a graph showing the temperature distribution in the bipolar secondary battery 4.
- the electrode sheet 25 k (k is a positive number, 1 k k 1 1 m) located between the center and the end face of the pipola secondary battery 4.
- concentrations of the positive electrode active material and the negative electrode active material of the other electrode sheet 25 may be set.
- the concentration of the positive electrode active material and negative electrode active material of electrode seeds 25 n 1 and 25 nm located on the end face is set to nine. / 0, and the concentration of the positive electrode active material and the negative electrode active material of the electrode sheet 25 n 1 located in the center is about 80%.
- Fig. 13 is a graph showing the temperature distribution in the stacking direction of the positive electrode, the bipolar secondary battery with the active material concentration and the negative electrode active material concentration set as shown in Fig. 10.
- the concentration distribution of the positive electrode active material and the negative electrode active material of each electrode sheet 25 nl to 25 nm is set.
- FIG. 11 is a graph showing the output current of each electrode sheet from 25 nl to 25 nm when the concentrations of the positive electrode active material and the negative electrode active material are set as shown in FIG. 2 is a graph showing the output voltage of each electrode sheet 25 n 1 to 25 nm.
- the output voltage and output current of each electrode sheet 25 n l to 25 nm are equalized.
- the present invention is not limited to this.
- each positive electrode 28 and negative electrode 26 also varies in the direction of the main surface, and depending on the position in each positive electrode 28 and negative electrode 26, the portion where the electrode reaction is active and the inactivity There are some parts.
- the temperature of the connection part to which the wiring is connected tends to increase.
- the temperature of the portion located in the vicinity of the connection portion is likely to be higher than the other portions. Therefore, even in one electrode sheet 25, the density of the part where the temperature is high is lowered and the density of the part where the temperature is low is raised so that partial deterioration occurs in the one electrode sheet 25. Can be suppressed.
- the electrolyte layer 27 is a layer formed from a material exhibiting ionic conductivity.
- the electrolyte layer 27 may be a solid electrolyte or a gel electrolyte.
- the bipolar electrode 30 is formed between the electrolyte layers 27, and is formed on one of the main surfaces of the current collector foil 29 and the current collector foil 29, and on the other main surface. And a negative electrode 26 formed.
- a plate-like negative electrode current collector plate 21 and a plate-like positive electrode current collector 23 are provided on the end surface of the bipolar secondary battery 4 positioned at the end of the electrode sheet 25 in the stacking direction.
- the negative electrode 26 of the electrode sheet 25 adjacent to the negative electrode current collector plate 21 in the stacking direction is in contact with one main surface of the negative electrode current collector plate 21.
- one main surface of the positive electrode current collector plate 23 is in contact with the positive electrode 28 of the electrode sheet 25 adjacent to the positive electrode current collector plate 23 in the stacking direction of the electrode sheet 25.
- the configuration of the bipolar secondary battery 4 configured as described above will be described in detail.
- the current collector foil 29 is made of aluminum, for example. In this case, even if the active material layer provided on the surface of the current collector foil 29 contains a solid polymer electrolyte, the mechanical strength of the current collector foil 29 can be sufficiently ensured.
- the current collector foil 29 may be formed by coating aluminum on the surface of a metal other than aluminum, such as copper, titanium, nickel, stainless steel (SUS), or an alloy thereof.
- the positive electrode 28 includes additives such as a positive electrode active material and a solid polymer electrolyte.
- the positive electrode '28 includes, as additives, a supporting salt (lithium salt) for enhancing ionic conductivity, a conductive auxiliary for enhancing electron conductivity, and NMP as a slurry viscosity adjusting solvent.
- a I BN azobisisopropylonitrile
- a polymerization initiator may be included.
- the positive electrode active material a composite oxide of lithium and a transition metal generally used in a lithium ion secondary battery can be used.
- the positive electrode active material was example, if, L i C o 0 L i ⁇ C o based composite oxide such as 2, L i N i 0 L i ⁇ N i based composite oxides such as 2, spinel L IMN 2 ⁇ 4 L i ⁇ ⁇ complex oxides such as L i ⁇ Fe complex oxides such as L i F e 0 2 and the like.
- L i F e P_ ⁇ phosphate compound or sulfate compound of transition metal and lithium such as 4; V 2 0 5, Mn_ ⁇ 2, T i S 2, Mo S 2, Mo 0 3 transition metal oxide such as goods and sulfides; Pb_ ⁇ 2, AgO, N i O OH and the like.
- the solid polymer electrolyte is not particularly limited as long as it is a polymer exhibiting ionic conductivity, and examples thereof include polyethylene oxide (PEO), polypropylene oxide (PP *), and copolymers thereof.
- PEO polyethylene oxide
- PP * polypropylene oxide
- the solid polymer electrolyte is contained in at least one of the positive electrode 28 and the negative electrode 26. More preferably, the solid polymer electrolyte Is included in both the positive electrode 28 and the negative electrode 26.
- Li (C 2 F 5 S 0 2 ) 2 N, Li .BF 4 , Li PF 6 , Li N (S0 2 C 2 F 5 ) 2 , or a mixture thereof. can do.
- the conductive aid acetylene black, carbon black, graphite and the like can be used.
- the negative electrode 26 includes additives such as a negative electrode active material and a solid polymer electrolyte.
- the negative electrode active material includes, as additives, a supporting salt (lithium salt) for increasing ionic conductivity, a conductive auxiliary agent for increasing electron conductivity, and NMP (N-methyl-2-methyl) as a solvent for adjusting slurry viscosity.
- a supporting salt lithium salt
- a conductive auxiliary agent for increasing electron conductivity
- NMP N-methyl-2-methyl
- ⁇ ' ⁇ BN Azobisipuchi-tolyl
- the negative electrode active material materials generally used in lithium ion secondary batteries can be used.
- a solid electrolyte it is preferable to use a single oxide or a composite oxide of lithium and a metal oxide or metal as the negative electrode active material.
- the negative electrode active material is a composite oxide of carbon or lithium and a transition metal. More preferably, the transition metal is titanium. In other words, the negative electrode active material is more preferably titanium oxide or a composite oxide of titanium and lithium.
- a solid polymer electrolyte such as polyethylene oxide (PEO), polypropylene oxide (PPO), or a copolymer thereof can be used.
- the solid electrolyte includes a supporting salt (lithium salt) for ensuring ionic conductivity.
- the supporting salt it is possible to use L i BF 4, L i PF 6, L i N (S0 2 CF 3) 2, L i N (S0 2 C 2 F 5) 2, or mixtures thereof .
- Table 1 shows specific examples when the electrolyte layer 27 is an organic solid electrolyte
- Table 2 shows specific examples when the electrolyte layer 27 is an inorganic solid electrolyte
- Table 3 shows that the electrolyte layer 27 is A specific example in the case of a gel electrolyte is shown.
- the electrolyte used in the secondary battery is a liquid.
- dilute sulfuric acid is used as the electrolyte.
- the positive current collector plate 23 and the negative current collector plate 21 have a certain degree of strength.
- each of the plurality of bipolar secondary batteries 4 is sandwiched between the positive current collector plate 23 and the negative current collector plate 21.
- the gap between the positive current collector plate 2 3 and the bipolar secondary battery 4 or the negative current collector plate 21 The gap with the bipolar secondary battery 4 can be eliminated.
- the present invention is suitable for a bipolar secondary battery configured by stacking a plurality of unit batteries.
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- General Chemical & Material Sciences (AREA)
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- Battery Mounting, Suspending (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP07768450.4A EP2045866A4 (en) | 2006-07-19 | 2007-07-12 | SECONDARY BATTERY |
CN2007800266944A CN101490894B (zh) | 2006-07-19 | 2007-07-12 | 二次电池 |
US12/373,647 US8642208B2 (en) | 2006-07-19 | 2007-07-12 | Secondary battery |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006196981A JP5286650B2 (ja) | 2006-07-19 | 2006-07-19 | 2次電池 |
JP2006-196981 | 2006-07-19 |
Publications (1)
Publication Number | Publication Date |
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WO2008010564A1 true WO2008010564A1 (fr) | 2008-01-24 |
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ID=38956896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/064301 WO2008010564A1 (fr) | 2006-07-19 | 2007-07-12 | Batterie secondaire |
Country Status (5)
Country | Link |
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US (1) | US8642208B2 (ja) |
EP (2) | EP2843734A3 (ja) |
JP (1) | JP5286650B2 (ja) |
CN (1) | CN101490894B (ja) |
WO (1) | WO2008010564A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8124265B2 (en) | 2006-12-21 | 2012-02-28 | Toyota Jidosha Kabushiki Kaisha | Power storage device |
Families Citing this family (12)
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JP4274256B2 (ja) | 2006-08-25 | 2009-06-03 | トヨタ自動車株式会社 | 蓄電装置用電極及び蓄電装置 |
JP5239375B2 (ja) * | 2008-02-14 | 2013-07-17 | トヨタ自動車株式会社 | 全固体電池およびその製造方法 |
CN102013512A (zh) * | 2010-04-22 | 2011-04-13 | 孙润光 | 一种具有高电位的电能存储装置及制作方法 |
JP5935405B2 (ja) * | 2012-03-08 | 2016-06-15 | 日産自動車株式会社 | 積層構造電池 |
JPWO2015105022A1 (ja) * | 2014-01-07 | 2017-03-23 | コニカミノルタ株式会社 | 有機エレクトロルミネセンスデバイス |
KR101690497B1 (ko) * | 2014-07-24 | 2016-12-28 | 에스케이이노베이션 주식회사 | 이차전지 및 이차전지의 설계 방법 |
KR101964277B1 (ko) | 2015-10-30 | 2019-04-01 | 주식회사 엘지화학 | 전고체 전지용 전극의 제조방법 |
KR102063604B1 (ko) * | 2016-09-21 | 2020-01-08 | 에스케이이노베이션 주식회사 | 이차전지 및 이차전지의 설계 방법 |
US11362338B2 (en) | 2017-02-14 | 2022-06-14 | Volkswagen Ag | Electric vehicle battery cell with solid state electrolyte |
US11362371B2 (en) | 2017-02-14 | 2022-06-14 | Volkswagen Ag | Method for manufacturing electric vehicle battery cells with polymer frame support |
US11870028B2 (en) | 2017-02-14 | 2024-01-09 | Volkswagen Ag | Electric vehicle battery cell with internal series connection stacking |
CN111937190B (zh) | 2018-05-03 | 2023-06-20 | 株式会社Lg新能源 | 用于制造包含聚合物固体电解质的电极的方法和由该方法获得的电极 |
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- 2007-07-12 WO PCT/JP2007/064301 patent/WO2008010564A1/ja active Search and Examination
- 2007-07-12 EP EP14185754.0A patent/EP2843734A3/en not_active Withdrawn
- 2007-07-12 EP EP07768450.4A patent/EP2045866A4/en not_active Withdrawn
- 2007-07-12 CN CN2007800266944A patent/CN101490894B/zh not_active Expired - Fee Related
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Also Published As
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JP2008027662A (ja) | 2008-02-07 |
EP2843734A2 (en) | 2015-03-04 |
EP2045866A1 (en) | 2009-04-08 |
JP5286650B2 (ja) | 2013-09-11 |
US8642208B2 (en) | 2014-02-04 |
EP2045866A4 (en) | 2014-04-02 |
CN101490894B (zh) | 2011-09-07 |
EP2843734A3 (en) | 2015-04-01 |
US20100009250A1 (en) | 2010-01-14 |
CN101490894A (zh) | 2009-07-22 |
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