WO2012073770A1 - 蓄電デバイス - Google Patents
蓄電デバイス Download PDFInfo
- Publication number
- WO2012073770A1 WO2012073770A1 PCT/JP2011/076976 JP2011076976W WO2012073770A1 WO 2012073770 A1 WO2012073770 A1 WO 2012073770A1 JP 2011076976 W JP2011076976 W JP 2011076976W WO 2012073770 A1 WO2012073770 A1 WO 2012073770A1
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- WIPO (PCT)
- Prior art keywords
- sensor
- exterior material
- deformation
- sensor film
- storage device
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0003—Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/271—Lids or covers for the racks or secondary casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
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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
- 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
- Y02E60/13—Energy storage using capacitors
-
- 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 power storage devices such as secondary batteries and capacitors.
- Secondary batteries that can be repeatedly charged and discharged are used in electronic devices such as mobile phones, personal computers, and digital cameras.
- a power storage system used for measures against instantaneous voltage drop a power storage system mounted in an electric vehicle or a hybrid electric vehicle, an energy storage device having a large energy capacity and capable of rapid charge / discharge is required. Examples of such an electricity storage device include a lithium ion secondary battery and an electric double layer capacitor.
- an electricity storage device such as a secondary battery or a capacitor includes an electrode stack in which a positive electrode and a negative electrode are stacked via a separator.
- the electrode laminate is enclosed in an exterior material such as a metal case or a laminate film together with the electrolyte solution.
- the electrolyte solution may be decomposed and gas may be generated by repeated overcharge or charge / discharge.
- the capacity may be reduced and the device life may be shortened.
- the exterior material may expand to impair safety. For this reason, for example, a mechanism is adopted in which the temperature, current, voltage, and the like of the power storage device are measured, and charging is interrupted when these exceed a specified value.
- a secondary battery including a sensor for detecting expansion of the exterior material has been proposed (see, for example, Patent Documents 1 to 3).
- an expansion of the secondary battery is detected by disposing an overcurrent protection element that reduces electrical resistance when pressure is applied between the housing and the secondary battery.
- the above-mentioned Patent Document 2 discloses a mechanical switch that is energized by being pressed against an exterior material
- the above-mentioned Patent Document 3 discloses a strain gauge as a sensor that detects expansion of a secondary battery.
- the present invention has been made in view of such circumstances, and it is an object to provide an electricity storage device that can detect the expansion of an exterior material at a low cost with a simple configuration and is excellent in safety. To do.
- An electricity storage device of the present invention includes an electricity storage element, an exterior material in which the electricity storage element is accommodated, and a deformation sensor disposed on an expansion surface of the exterior material, and the deformation sensor is an elastomer or a resin. And a sensor film that is bent and deformed as the exterior material expands, and is connected to the sensor film. At least a pair of electrodes, and a three-dimensional conductive path is formed in the sensor film by contact between the conductive fillers, and the sensor film is electrically connected as the amount of deformation from the natural state increases. The resistance increases, and the expansion of the exterior material is detected by a change in electrical resistance accompanying bending deformation of the sensor film. *
- the power storage element in the power storage device of the present invention includes a secondary battery, a positive electrode constituting a capacitor, a negative electrode laminate, an electrolyte, and the like. Further, the expansion surface is a surface that expands outward due to gas pressure when gas is generated inside the exterior material.
- the deformation sensor in the electricity storage device of the present invention includes a sensor film having an elastomer or a resin as a base material. For this reason, the deformation sensor is excellent in workability and has a high degree of freedom in shape design. Therefore, the deformation sensor can be arranged along the shape of the expansion surface of the exterior material. Thereby, expansion
- the sensor film is disposed on the expansion surface of the exterior material. The sensor film is bent and deformed by the displacement of the expansion surface. That is, the displacement due to the expansion of the exterior material is directly input to the sensor film. Therefore, for example, even when the displacement of the exterior material is small as in the initial stage of expansion, it is easy to detect the expansion of the exterior material. *
- the filling rate of the conductive filler in the sensor film is a value when the volume of the sensor film is 100 vol%. Since the conductive filler is filled at a high filling rate of 30 vol% or more, a three-dimensional conductive path is formed in the sensor film in a natural state (undeformed state) by contact between the conductive fillers. ing. When the sensor film is deformed, the conductive fillers repel each other, and the contact state of the conductive fillers changes. Then, the contact between the conductive fillers is cut off, whereby the conductive path is cut and the electrical resistance is increased. When the sensor film is restored to the natural state, the contact state of the conductive filler is restored, and the electrical resistance is reduced. *
- the expansion of the exterior material can be detected by the change in the electrical resistance accompanying the bending deformation of the sensor film. Therefore, the safety of the electricity storage device is improved.
- the life of the electricity storage device can be extended by controlling the charge / discharge using the expansion behavior of the exterior material.
- the sensor film does not necessarily have to be arranged in a natural state. For example, you may arrange
- the bending deformation of the sensor film accompanying the expansion of the exterior material includes both the case where the sensor film is bent from the natural state and the case where the sensor film is restored from the bent state. *
- the sensor film may be arranged from one end to the other end of the expansion surface of the exterior material.
- the sensor film is disposed from one end of the expansion surface to the other end. For this reason, it is easy to detect the expansion of the exterior material without leakage.
- the deformation sensor may be disposed on the expansion surface. For this reason, manufacture of an electrical storage device is easy.
- the power storage device does not increase in size. Therefore, even when a plurality of power storage devices are stacked and modularized, space can be saved.
- the sensor film may be disposed on a part of the expansion surface or may be disposed so as to cover the entire surface. Also, the vicinity of the center of the expansion surface is likely to expand. That is, the displacement of the exterior material increases near the center of the expansion surface. For this reason, when arrange
- the deformation sensor includes a base material on which the sensor film is disposed, the sensor film is disposed on the expansion surface side of the exterior material, and It is good to have a configuration comprising a deformation input member that is disposed on the substrate side and increases the amount of bending deformation of the sensor film by pressing the sensor film with the exterior material as the exterior material expands. . *
- the sensor film of the deformation sensor is interposed between the exterior material and the deformation input member.
- the sensor film is pressed against the deformation input member to bend and deform. That is, in this configuration, the sensor film is bent and deformed mainly by contact with the deformation input member. Therefore, the amount of bending deformation of the sensor film is larger than that in the case of bending deformation only by the expansion of the exterior material.
- the increase in the electrical resistance with respect to the displacement of the exterior material becomes large. That is, the sensitivity of the deformation sensor is increased. Therefore, even if the displacement of the expansion surface is small, the expansion of the exterior material can be detected.
- the vicinity of the center of the expansion surface tends to expand. For this reason, when the sensor film is arranged so as to cover the vicinity of the center of the expansion surface, the pressing force from the deformation input member is more easily applied to the sensor film. This increases the amount of bending deformation of the sensor film. Therefore, the sensitivity of the deformation sensor can be further increased.
- the deformation input member may be disposed directly on the exterior material or may be disposed on a separate member.
- the deformation input member may be disposed in the housing.
- the deformation input member and the deformation sensor may be in contact with each other or may not be in contact with each other before the exterior material is expanded. When the deformation input member and the deformation sensor are in contact with each other in a state before the exterior material is expanded, it is easier to detect the initial expansion of the exterior material.
- the deformation input member is a bar member or a string member having a curved surface portion that comes into contact with the deformation sensor, and the bar member or the string member is connected to the deformation sensor. It is good to set it as the structure arrange
- a bar member or a string member is used as the deformation input member.
- the bar member or the string member is disposed so as to cross the deformation sensor.
- the expansion surface of the exterior material has a recess
- the sensor film is arranged in a state of being bent and deformed along the recess. Good. *
- the sensor film is arranged in a bent state in the concave portion of the expansion surface of the exterior material.
- the concave portion is displaced so as to approach a flat state.
- the sensor film is restored to a natural state before being bent and deformed.
- the expansion of the exterior material is detected by a change in the electrical resistance of the sensor film in this process.
- a deformation sensor should just be arrange
- the deformation sensor is disposed in the concave portion of the expansion surface, the power storage device can be configured in a compact manner. Therefore, even when a plurality of power storage devices are stacked and modularized, space can be saved.
- the storage element when a laminate film is used as the exterior material, the storage element is covered with the laminate film and then evacuated. Thereby, a laminate film adheres along the shape of an electrical storage element. Therefore, for example, by forming a recess in a part of the power storage element in advance, the recess can be easily formed on the expansion surface of the exterior material.
- the exterior material is made of a film member, and the expansion surface of the exterior material has a sealing portion to which ends of the film member are attached.
- the sensor film may be arranged on the expansion surface and the sealing part that follows the sensor film, and the sensor film may be bent and deformed as the sealing part rises due to expansion of the exterior material.
- the exterior material is made of a film member such as a laminate film
- one end and the other end of the film member can be adhered and sealed by heat fusion or the like.
- swelling of an exterior material is detected using the sealing part formed by sticking the edge parts of a film member. That is, the sensor film is disposed on the expansion surface and the sealing portion that follows the expansion surface. In other words, the sensor film is disposed across the expansion surface and the sealing portion. When the exterior material expands, the sealing portion rises. Thereby, the sensor film is bent. The expansion of the exterior material is detected by a change in the electrical resistance of the sensor film in this process.
- a deformation sensor should just be arrange
- the expansion of the exterior material can be detected easily and at low cost by using the sealing portion.
- the deformation sensor is disposed in the sealing portion of the expansion surface. For this reason, even if it arrange
- the power storage element, the exterior material, and a housing for housing the deformation sensor are further provided, and one end of the deformation sensor is attached to the housing, The other end may be configured to be attached to the expansion surface of the exterior material.
- the deformation sensor is arranged so as to be bridged between the housing and the exterior material.
- the gap between the housing and the exterior material becomes smaller.
- the sensor film of the deformation sensor is bent.
- the expansion of the exterior material is detected by a change in the electrical resistance of the sensor film in this process.
- the base material of the sensor film is a resin, and the conductive path is cut when the sensor film is bent and deformed. It is preferable that a crack is formed in advance in the direction.
- the sensor film of this configuration is formed by filling a resin with a conductive filler.
- a three-dimensional conductive path is formed by contact between the conductive fillers, and the electrical resistance increases as the amount of deformation from the natural state increases.
- a crack is formed in advance in the direction in which the conductive path is cut when the sensor film of this configuration is bent and deformed.
- FIG. 12 shows an enlarged schematic view of the vicinity of a part of a crack in the sensor film.
- FIG. 12 is a schematic diagram for explaining the sensor film of this configuration. Therefore, FIG. 12 does not limit the shape of the crack, the extending direction of the crack, the shape of the conductive filler, and the like.
- (a) shows the natural state before bending deformation
- (b) shows the state after bending deformation. *
- the sensor film 800 includes a base material resin 801, a conductive filler 802, and a crack 803.
- a conductive path P is formed in the sensor film 800 by contact between the conductive fillers 802.
- the crack 803 is formed in a direction crossing the left-right direction (extension direction) in FIG.
- a crack 803 is opened as shown in FIG.
- the contact between the conductive fillers 802 is cut off, and the conductive path P is cut.
- the electrical resistance increases.
- the sensor film 800 is restored to the original state (the natural state in FIG. 12A)
- the crack 803 also returns to the original state. *
- the conductive path is cut without waiting for the elastic deformation of the resin (however, the case where the conductive path is cut by the elastic deformation of the resin is excluded). Not a thing). Therefore, response delay is unlikely to occur.
- the conductive path is cut mainly by the opening of the crack, small deformation can be detected with high accuracy as compared with the case where the conductive path is cut only depending on the elastic deformation of the resin. Therefore, even if the displacement of the expansion surface is small, the expansion of the exterior material can be detected.
- swelling of exterior material can be detected at low cost by simple structure, and the electrical storage device excellent in safety can be provided.
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 when gas is generated. It is a disassembled perspective view of the electrical storage device of 2nd embodiment. It is sectional drawing of the same electrical storage device. It is an enlarged view in the area
- FIG. 7 is a sectional view taken along line VII-VII in FIG. 6. It is sectional drawing of the electrical storage device of 4th embodiment. It is sectional drawing of the electrical storage device at the time of gas generation. It is sectional drawing of the electrical storage device of 5th embodiment.
- FIG. 1 the perspective view of the electrical storage device of this embodiment is shown.
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 when gas is generated.
- the cover film disposed on the uppermost surface of the deformation sensor is omitted, and the electrode is shown through the electrode.
- the power storage device 1 includes a power storage element 10, an exterior material 20, and a deformation sensor 30. *
- the power storage element 10 has a rectangular parallelepiped shape and includes an electrode stack (not shown) in which a plurality of cells are stacked. Each cell has a positive electrode and a negative electrode that are arranged to face each other with a separator interposed therebetween, and a current collector plate. The electrolytic solution is impregnated in the positive electrode and the negative electrode. *
- the packaging material 20 is made of a laminate film.
- the laminate film has an aluminum foil and a pair of resin films laminated on both sides thereof.
- the packaging material 20 covers the outer peripheral surface of the electricity storage element 10.
- the upper surface 21 of the exterior material 20 is included in the expansion surface in the present invention.
- the deformation sensor 30 is disposed on the upper surface 21 of the exterior material 20.
- the deformation sensor 30 includes a base material 31, a sensor film 32, a pair of electrodes 33 a and 33 b, wirings 34 a and 34 b, and a cover film 35.
- the base material 31 is made of polyimide and has an L-shaped strip shape.
- the base material 31 includes a sensor unit 310 and a wiring unit 311.
- the sensor unit 310 is disposed from the left end to the right end of the upper surface 21 of the exterior material 20.
- the sensor unit 310 is disposed so as to cover the vicinity of the center of the upper surface 21. *
- the sensor film 32 has a strip shape extending in the left-right direction.
- the sensor film 32 is disposed on the upper surface of the sensor unit 310 of the base material 31.
- the sensor film 32 is disposed from the left end to the right end of the upper surface 21 of the exterior material 20.
- the sensor film 32 is made of EPDM (ethylene-propylene-diene copolymer) filled with carbon beads (conductive filler). The filling rate of the carbon beads is about 45 vol% when the volume of the sensor film 32 is 100 vol%. *
- Each of the pair of electrodes 33a and 33b has a flake shape.
- the pair of electrodes 33a and 33b are interposed between the base material 31 and the sensor film 32, respectively.
- the electrode 33 a is disposed at the left end of the sensor film 32.
- One end of a wiring 34a is connected to the electrode 33a.
- the electrode 33 b is disposed at the right end of the sensor film 32.
- One end of a wiring 34b is connected to the electrode 33b.
- the wirings 34 a and 34 b are disposed on the upper surfaces of the sensor unit 310 and the wiring unit 311 of the base material 31. The other ends of the wirings 34a and 34b are each connected to a control unit (not shown). *
- the cover film 35 is made of acrylic rubber, and has an L-shaped strip shape like the base material 31.
- the cover film 35 covers the base material 31, the sensor film 32, and the wirings 34a and 34b from above. *
- the base material 31, the sensor film 32, and the cover film 35 that constitute the deformation sensor 30 are all flexible.
- the deformation sensor 30 can be arrange
- swelling of the exterior material 20 can be detected correctly.
- the displacement of the upper surface 21 of the exterior material 20 is directly input to the sensor film 32 via the base material 31. Therefore, for example, even when the displacement of the upper surface 21 is small as in the initial stage of expansion, it is easy to detect the expansion of the exterior material 20.
- the sensor film 32 is arranged from the left end to the right end of the upper surface 21 of the exterior material 20. For this reason, it is easy to detect the expansion of the exterior material 20 without leakage. Further, the sensor film 32 is disposed so as to cover the vicinity of the center of the upper surface 21. The vicinity of the center of the upper surface 21 tends to expand. That is, the displacement near the center of the upper surface 21 is larger than the displacement near the four sides. For this reason, it is easy to detect the expansion of the exterior material 20. *
- the power storage device 1 can be easily manufactured by attaching the deformation sensor 30 to the upper surface 21 of the exterior member 20. Moreover, the deformation sensor 30 has a sheet shape. For this reason, the electrical storage device 1 can be comprised compactly. Therefore, even when a plurality of power storage devices 1 are stacked and modularized, space saving is possible. *
- the expansion of the exterior material 20 can be detected by the increase in electrical resistance accompanying the bending deformation of the sensor film 32. Therefore, the safety of the electricity storage device 1 is high.
- the life of the electricity storage device 1 can be increased by controlling the charge / discharge using the expansion behavior of the exterior member 20.
- FIG. 11 shows an example of the charging circuit. *
- the ON / OFF of the IGBT is controlled by comparing the electric resistance Rx of the sensor film 32 with the reference resistance R0 .
- the electrical resistance R x of the sensor film 32 becomes larger than the reference resistance R 0 , that is, when the exterior material 20 expands greatly, the IGBT is turned off and the electrical storage element 10 is turned off. Charging can be cut off.
- FIG. 3 the disassembled perspective view of the electrical storage device of this embodiment is shown.
- FIG. 4 shows a cross-sectional view of the electricity storage device.
- FIG. 5 shows an enlarged view in the region V of FIG. FIG. 3 corresponds to FIG. Therefore, in FIG. 3, members corresponding to those in FIG. In FIG. 3, the electrode, the sensor film, and the wiring of the deformation sensor are shown through.
- FIG. 3 the configuration of the power storage device of the present embodiment will be described.
- FIG. 4 shows a cross-sectional view of the electricity storage device.
- FIG. 5 shows an enlarged view in the region V of FIG. FIG. 3 corresponds to FIG. Therefore, in FIG. 3, members corresponding to those in FIG. In FIG. 3, the electrode, the sensor film, and the wiring of the deformation sensor are shown through.
- the crack C1 is exaggerated for convenience of explanation.
- the electricity storage device 1 includes a device body 40, a housing 41, and a bar member 42.
- the device main body 40 includes the power storage element 1 0, an exterior material 20, and a deformation sensor 50.
- the deformation sensor 50 is disposed on the upper surface 21 of the exterior material 20.
- the deformation sensor 50 includes a base material 51, a sensor film 52, a pair of electrodes 53a and 53b, and wirings 54a and 54b. *
- the substrate 51 is made of polyimide and has an L-shaped band shape.
- the base material 51 includes a sensor unit 510 and a wiring unit 511.
- the sensor unit 510 is disposed from the left end to the right end of the upper surface 21 of the exterior material 20.
- the sensor unit 510 is disposed so as to cover the vicinity of the center of the upper surface 21. *
- the sensor film 52 has a strip shape extending in the left-right direction.
- the sensor film 52 is disposed near the center of the lower surface of the sensor unit 510. That is, the sensor film 52 is interposed between the base material 51 and the upper surface 21 of the exterior material 20.
- the sensor film 52 is bonded to the upper surface 21 of the exterior material 20.
- the sensor film 52 is made by filling an epoxy resin with carbon beads.
- the filling rate of the carbon beads is about 45 vol% when the volume of the sensor film 52 is 100 vol%.
- a large number of conductive paths are formed in the sensor film 52 by contact between the carbon beads.
- a plurality of cracks C ⁇ b> 1 are formed in the sensor film 52 in advance.
- the crack C1 is formed so that the conductive path is cut when the sensor film 52 is bent and deformed. That is, the crack C ⁇ b> 1 is formed so as to extend in the thickness direction (vertical direction) of the sensor film 52.
- a method for manufacturing the sensor film 52 will be described. First, an epoxy resin pre-curing resin, a curing agent, and carbon beads are mixed to prepare a sensor paint. Next, a sensor paint is applied to the surface of the substrate 51. And the base material 51 is curved so that the coating film of a sensor coating material may become inside, and it heats in that state, and hardens a coating film. Thereafter, the base material 51 is returned from the curved state to the original planar state. At this time, a crack C1 is formed in the cured coating film (sensor film). *
- Each of the pair of electrodes 53a and 53b has a flake shape.
- the pair of electrodes 53a and 53b are interposed between the base material 51 and the sensor film 52, respectively.
- the electrode 53 a is disposed at the left end of the sensor film 52.
- One end of a wiring 54a is connected to the electrode 53a.
- the electrode 53b is disposed at the right end of the sensor film 52.
- One end of a wiring 54b is connected to the electrode 53b.
- the wirings 54 a and 54 b are disposed on the lower surface of the sensor unit 510 and the wiring unit 511 of the base material 51.
- the other ends of the wires 54a and 54b are each connected to a control unit (not shown). *
- the housing 41 includes a main body 43, a lid 44, and a pair of cushioning materials 45a and 45b.
- the main body 43 has a box shape.
- the main body 43 accommodates the device main body 40 together with a pair of cushioning materials 45a and 45b.
- the buffer material 45a is made of thermoplastic rubber and has a rectangular parallelepiped shape.
- a support recess 450a is formed in the cushioning material 45a.
- the left end of the device body 40 is accommodated in the support recess 450a.
- the buffer material 45b is also made of thermoplastic rubber and has a rectangular parallelepiped shape.
- a support recess 450b is formed in the cushioning material 45b.
- the support recess 450b houses the right end of the device body 40.
- the lid 44 is disposed so as to cover the upper opening of the main body 43.
- a mounting portion 440 extending in the front-rear direction is disposed on the lower surface of the lid portion 44. *
- the bar member 42 has a cylindrical shape extending in the front-rear direction.
- the bar member 42 is fixed to the attachment portion 440 of the lid portion 44.
- the bar member 42 has a curved surface portion 420.
- the curved surface portion 420 is in contact with the upper surface of the base material 51 of the deformation sensor 50.
- the bar member 42 is disposed so as to be substantially orthogonal to a line connecting the pair of electrodes 53 a and 53 b of the deformation sensor 50. In other words, the bar member 42 is disposed so as to be substantially orthogonal to the sensor film 52.
- the crack C1 in the sensor film 52 is opened. Thereby, the conductive path is cut. In addition, the conductive path is cut by changing the contact state between the carbon beads. As a result, the electrical resistance of the sensor film 52 detected between the electrodes 53a and 53b becomes larger than the electrical resistance in the state before bending deformation. Thus, in the electrical storage device 1, the expansion of the exterior material 20 is detected by the increase in the output electrical resistance.
- the power storage device 1 of the present embodiment has the same effects as those of the first embodiment with respect to the parts common to the power storage device 1 of the first embodiment. Further, according to the electricity storage device 1 of the present embodiment, the sensor film 52 is bent and deformed mainly due to contact with the rod member 42. Therefore, the amount of bending deformation of the sensor film 52 is larger than that in the case of bending deformation only by the expansion of the exterior material 20. Thereby, the increase in the electrical resistance with respect to the displacement of the exterior material 20 becomes large. That is, the sensitivity of the deformation sensor 50 can be increased with a relatively simple configuration in which the bar member 42 is disposed. Therefore, according to the electricity storage device 1 of the present embodiment, the expansion of the exterior material 20 can be detected even when the displacement of the upper surface 21 is small. *
- the bar member 42 and the deformation sensor 50 are in contact with each other before the exterior material 20 is expanded. Thereby, the bending deformation of the sensor film 52 is started at the initial stage of the expansion of the exterior member 20. Therefore, the initial expansion of the exterior material 20 can also be detected. Further, the bar member 42 is disposed so as to be substantially orthogonal to the sensor film 52. For this reason, the sensor film 52 is easily bent and deformed. *
- the sensor film 52 has a crack C1.
- the crack C1 is opened.
- the conductive path is cut, and the electrical resistance of the sensor film 52 increases rapidly. Therefore, the response delay is small.
- the conductive path is cut mainly by the opening of the crack C1, small deformation can be detected with high accuracy compared to the case where the conductive path is cut only depending on the elastic deformation of the epoxy resin. . Therefore, even if the displacement of the upper surface 21 is small, the expansion of the exterior material 20 can be detected.
- FIG. 6 the perspective view of the electrical storage device of this embodiment is shown.
- FIG. 7 shows a sectional view taken along line VII-VII in FIG.
- FIG. 6 corresponds to FIG. Therefore, in FIG. 6, members corresponding to those in FIG.
- the electrode, the sensor film, and the wiring of the deformation sensor are shown in a transparent manner.
- the power storage device 1 includes a power storage element 10, an exterior material 20, and a deformation sensor 50. *
- a recess 22 is formed in the vicinity of the center of the front end portion of the upper surface 21 of the exterior material 20.
- the recess 22 has a trapezoidal cross section.
- the deformation sensor 50 includes a base material 51, a sensor film 52, a pair of electrodes 53a and 53b, and wirings 54a and 54b.
- the configuration of the deformation sensor 50 is the same as that of the second embodiment. Therefore, the description is omitted here. *
- the wiring portion 511 of the base material 51 in the deformation sensor 50 is disposed along the right end of the upper surface 21 of the exterior material 20.
- the sensor unit 510 of the base material 51 is disposed along the front end of the upper surface 21.
- the vicinity of the center of the sensor unit 510 is bent and arranged along the shape of the recess 22.
- a sensor film 52 is disposed near the center of the lower surface of the sensor unit 510.
- the sensor film 52 is arranged in a bent state along the shape of the recess 22.
- a method of arranging the deformation sensor 50 will be described. First, a notch having substantially the same shape as that of the recess 22 is formed in the vicinity of the center of the front end of the upper surface of the electricity storage element 10. Next, the electricity storage element 10 is covered with the exterior material 20. Thereafter, the deformation sensor 50 is bonded along the front end and the right end of the upper surface of the exterior member 20. Subsequently, the air inside the exterior member 20 is evacuated and extracted. Then, the exterior material 20 is in close contact with the outer peripheral surface of the electricity storage element 10. As a result, a recess 22 is formed on the upper surface 21 of the exterior member 20 along the notch of the electricity storage element 10.
- the vicinity of the center of the sensor unit 510 together with the exterior material 20 is deformed so as to follow the shape of the recess 22.
- tensile strain is input to the sensor film 52.
- the sensor film 52 is disposed in a state of being bent and deformed along the shape of the recess 22.
- the power storage device 1 of the present embodiment has the same effects as the first and second embodiments with respect to the parts common to the power storage device 1 of the first and second embodiments.
- the sensor film 52 can detect the initial stage of expansion of the exterior member 20 due to a decrease in electrical resistance in the process of restoring from a bending deformation state to a natural state. Therefore, it is suitable for detecting the behavior at the start of gas generation. Further, the expansion of the exterior material 20 can be detected easily and at low cost by using the recess 22 on the upper surface 21 of the exterior material 20.
- membrane 52 is arrange
- FIG. 8 sectional drawing of the electrical storage device of this embodiment is shown.
- FIG. 9 shows a cross-sectional view of the electricity storage device when gas is generated.
- the power storage device 1 includes a power storage element 10, an exterior material 20, and a deformation sensor 50. *
- the packaging material 20 is made of a laminate film.
- a sealing portion 23 extending in the front-rear direction is disposed on the upper surface 21 of the exterior material 20.
- the sealing portion 23 is formed by heat-sealing one end and the other end of the packaging material 20 that overlap on the upper surface of the power storage element 10.
- the sealing part 23 is arranged in a state of being tilted to the right.
- the sealing part 23 and the upper surface 21 of the exterior material 20 are not fixed.
- the deformation sensor 50 includes a base material 51, a sensor film 52, a pair of electrodes 53a and 53b, and wiring (not shown).
- the base material 51 is made of polyimide and has a strip shape.
- the base material 51 is disposed so as to overlap the sealing portion 23 from the left end of the upper surface 21 of the exterior material 20. *
- the sensor film 52 has a strip shape extending in the left-right direction.
- the sensor film 52 is disposed so as to overlap the sealing portion 23 from the vicinity of the center of the upper surface 21 of the exterior material 20.
- the sensor film 52 is interposed between the base material 51 and the exterior material 20.
- the configuration and manufacturing method of the sensor film 52 are the same as those in the second embodiment. Therefore, the description is omitted here. *
- Each of the pair of electrodes 53a and 53b has a flake shape.
- the pair of electrodes 53a and 53b are interposed between the base material 51 and the sensor film 52, respectively.
- the electrode 53 a is disposed at the left end of the sensor film 52.
- the electrode 53b is disposed at the right end of the sensor film 52.
- One end of a wiring is connected to each of the electrodes 53a and 53b.
- the crack C1 in the sensor film 52 is opened. Thereby, the conductive path is cut. In addition, the conductive path is cut by changing the contact state between the carbon beads. As a result, the electrical resistance of the sensor film 52 detected between the electrodes 53a and 53b becomes larger than the electrical resistance in the state before bending deformation. Thus, in the electrical storage device 1, the expansion of the exterior material 20 is detected by the increase in the output electrical resistance.
- the power storage device 1 of the present embodiment has the same effects as the first and second embodiments with respect to the parts common to the power storage device 1 of the first and second embodiments.
- the deformation sensor 50 may be arranged so that a part of the sensor film 52 overlaps the sealing portion 23. For this reason, manufacture of the electrical storage device 1 is easy.
- the expansion of the exterior material 20 can be detected easily and at low cost using the sealing portion 23 of the exterior material 20.
- the deformation sensor 50 is disposed on the upper surface 21 and the sealing portion 23 of the exterior material 20. For this reason, the electrical storage device 1 can be comprised compactly. Therefore, even when a plurality of power storage devices 1 are stacked and modularized, space saving is possible. *
- the power storage device 1 includes a device main body 40 and a housing 41.
- the device body 40 includes a power storage element 10, an exterior material 20, and a deformation sensor 50.
- the deformation sensor 50 is interposed between the exterior material 20 and the lid portion 44 of the housing 41.
- the deformation sensor 50 includes a base 51, a sensor film 52, a pair of electrodes 53 a and 53 b, wiring (not shown), and a cover film 55. *
- the substrate 51 is made of polyimide and has a strip shape with a C-shaped cross section.
- the upper end of the base material 51 is fixed to the lid portion 44 of the housing 41.
- the lower end of the base material 51 is fixed to the upper surface 21 of the exterior material 20.
- the sensor film 52 has a strip shape extending in the vertical direction.
- the sensor film 52 is disposed on the left surface of the substrate 51.
- the configuration and manufacturing method of the sensor film 52 are the same as those in the second embodiment. Therefore, the description is omitted here. *
- Each of the pair of electrodes 53a and 53b has a flake shape.
- the pair of electrodes 53a and 53b are interposed between the base material 51 and the sensor film 52, respectively.
- the electrode 53 a is disposed on the upper end of the sensor film 52.
- the electrode 53b is disposed at the lower end of the sensor film 52.
- One end of a wiring is connected to each of the electrodes 53a and 53b.
- the cover film 55 is made of acrylic rubber and has a strip shape extending in the vertical direction.
- the cover film 55 covers the sensor film 52 from the left side. *
- the electrical resistance of the sensor film 52 detected between the electrodes 53a and 53b becomes larger than the electrical resistance in the state before bending deformation.
- the expansion of the exterior material 20 is detected by the increase in the output electrical resistance.
- the power storage device 1 of the present embodiment has the same effects as the first and second embodiments with respect to the parts common to the power storage device 1 of the first and second embodiments. Moreover, in the electrical storage device 1 of this embodiment, the housing 41 can be used to detect the expansion of the exterior material 20 easily and at low cost. *
- the shape and configuration of the deformation sensor are not limited to the above embodiment.
- EPDM is used for the base material of the sensor film.
- the type of the base material elastomer is not particularly limited.
- natural rubber, isoprene rubber, butadiene rubber, acrylonitrile-butadiene copolymer rubber, styrene-butadiene copolymer rubber, butyl rubber, halogenated butyl rubber, hydrogenated nitrile rubber, chloroprene rubber, acrylic rubber, chlorosulfonated polyethylene rubber, hydrin rubber, Silicone rubber, fluorine rubber, urethane rubber and the like can be mentioned.
- epoxy resin is used as the base material of the sensor film.
- the kind of resin of the base material is not particularly limited.
- the thermosetting resin include alkyd resins, phenol resins, urea resins, melamine resins, unsaturated polyester resins, polyurethanes, and polyimides.
- the thermoplastic resin include polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyvinyl acetate, polytetrafluoroethylene, acrylonitrile-butadiene-styrene resin, acrylic resin, polyamide, polyacetal, polycarbonate, polyphenylene oxide, polyethylene terephthalate, Examples include polybutylene terephthalate. *
- the conductive filler filled in the base material may be any particle having conductivity. Examples thereof include fine particles such as carbon materials and metals. Of these, one can be used alone, or two or more can be used in combination. In order to form a conductive path, spherical particles may be employed as the conductive filler from the viewpoint of bringing the filling state of the conductive filler in the base material closer to the closest packing state. Moreover, what is necessary is just to set suitably also about the number, shape, arrangement
- cracks were formed in the sensor film.
- the method of forming a crack is not limited to the above embodiment.
- the sensor paint may be printed and cured on the surface of the substrate having irregularities. If it carries out like this, stress will concentrate on the corner
- the cover film was arrange
- the cover film is not always necessary.
- the deformation sensor is arranged from the left end to the right end of the upper surface (expansion surface) of the exterior material.
- the place where the deformation sensor is arranged is not particularly limited.
- the deformation sensor may be arranged so that the sensor film covers the entire expansion surface.
- a cylindrical bar member is used as the deformation input member.
- the shape and arrangement of the deformation input member are not particularly limited.
- transformation input member you may fix to a housing
- the device body storage element + exterior material + deformation sensor
- the string member may be used as the deformation input member.
- the deformation input member is arranged so as to be substantially perpendicular to the sensor film.
- the arrangement direction of the deformation input member with respect to the sensor film is not particularly limited. The deformation input member may be disposed so as to intersect the sensor film.
- the deformation input member may be disposed obliquely with respect to the sensor film.
- the deformation input member desirably has a curved surface portion that comes into contact with the deformation sensor.
- membrane was arrange
- the sensor film is disposed on the lower surface of the substrate. That is, the sensor film was disposed in a state where a part of the crack was opened by bending deformation.
- the presence or absence of a crack opening in the initial state of the sensor film is not particularly limited.
- the deformation sensor of the third embodiment may be disposed upside down (so that the sensor film is disposed on the upper surface of the base material).
- the laminate film was used as an exterior material.
- the material of the exterior material is not particularly limited.
- the exterior material may be a metal case.
- the sensor film was made into the strip
- the shape of the sensor film is not particularly limited. What is necessary is just to set the shape of a sensor film suitably so that the initial resistance value of a sensor film may turn into a desired setting value, for example, it is good also as a shape which connects a pair of electrodes with arbitrary straight lines or curves.
- FIG. 13 shows changes over time in the electrical resistance of the deformation sensor and the amount of swelling of the exterior material.
- the resistance increase rate of the deformation sensor is indicated by a thick line
- the amount of swelling of the exterior material is indicated by a thin line.
- the resistance increase rate on the vertical axis in FIG. 13 is calculated by the following equation (1).
- the amount of swelling was measured with a laser displacement meter for the displacement in the thickness direction near the center of the electricity storage device model.
- R 0 initial electric resistance value before expansion of exterior material
- R measured after expansion of exterior material Electrical Resistance Value
- the electrical resistance of the deformation sensor increased as the amount of swelling of the exterior material increased.
- the change in the electrical resistance of the deformation sensor almost coincided with the expansion and contraction behavior of the exterior material.
- a power storage device model having the same form as that of the second embodiment is manufactured, the exterior material is expanded, and the deformation sensor responds to the amount of expansion of the exterior material. Sex was evaluated.
- the bar member was separately supported by a support member and brought into contact with the deformation sensor.
- the diameter of the bar member is 9 mm.
- the size of the device body is the same as the model of the first response experiment.
- the size of the sensor film is 30 mm long and 5 mm wide.
- the displacement in the thickness direction of the device body on the left side of the bar member was measured with a laser displacement meter.
- FIG. 14 shows changes over time in the electrical resistance of the deformation sensor and the amount of swelling of the exterior material.
- the rate of change in resistance of the deformation sensor is indicated by a thick line
- the amount of swelling of the exterior material is indicated by a thin line.
- the resistance change rate on the vertical axis in FIG. 14 is calculated by the following equation (2).
- Resistance change rate ( ⁇ ) R / R 0 (2)
- the electrical resistance of the deformation sensor increased as the amount of swelling of the exterior material increased.
- the change in the electrical resistance of the deformation sensor almost coincided with the expansion and contraction behavior of the exterior material.
- a power storage device model similar to that of the third embodiment was prepared, the exterior material was expanded, and the responsiveness of the deformation sensor to the amount of displacement of the bottom surface of the recess was evaluated.
- the size of the electricity storage device model is the same as in the first response experiment.
- the size of the recess is 40 mm for the upper base, 20 mm for the lower base, and 5 mm for the height in the trapezoidal shape of the cross section.
- the size of the sensor film before being disposed in the recess is 60 mm long and 5 mm wide.
- the amount of displacement of the bottom surface of the recess was measured with a laser displacement meter in the vertical direction of the bottom surface of the recess.
- FIG. 15 shows changes over time in the electrical resistance of the deformation sensor and the amount of displacement of the bottom surface of the recess.
- the rate of change in resistance of the deformation sensor is indicated by a thick line
- the amount of displacement of the bottom surface of the recess is indicated by a thin line.
- the resistance change rate on the vertical axis in FIG. 15 is calculated by the previous equation (2). *
- Power storage device 10 Power storage element 20: Exterior material 21: Upper surface (expanded surface) 22: Recess 23: Sealing part 30: Deformation sensor 31: Base material 32: Sensor film 33a, 33b: Electrodes 34a, 34b: Wiring 35 : Cover film 310: Sensor part 311: Wiring part 40: Device main body 41: Housing 42: Bar member 43: Main body part 44: Lid part 45a, 45b: Buffer material 420: Curved part 440: Mounting part 450a, 450b: Support Recess 50: Deformation sensor 51: Base material 52: Sensor film 53a, 53b: Electrode 54a, 54b: Wiring 55: Cover film 510: Sensor part 511: Wiring part 800: Sensor film 801: Resin 802: Conductive filler 803: Crack C1: Crack P: Conductive path
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Fuel Cell (AREA)
Abstract
Description
らに、前記蓄電要素、前記外装材、および前記変形センサが収容される筐体を備え、該変形センサの一端は該筐体に取り付けられ、他端は該外装材の前記膨張面に取り付けられる構成とするとよい。
0と、外装材20と、変形センサ50と、を備えている。
20の一端と他端とが、熱融着されてなる。封止部23は、右方に倒れた状態で配置されている。封止部23と外装材20の上面21とは、固定されていない。
近における厚さ方向の変位を、レーザー変位計で測定した。抵抗増加率(-)=ΔR/R0=(R-R0)/R0・・・(1)[R0:外装材膨張前の初期電気抵抗値、R:外装材膨張後に測定された電気抵抗値] 図13に示すように、外装材の膨らみ量が増加するに従って、変形センサの電気抵抗が増加した。変形センサの電気抵抗の変化は、外装材の膨張、収縮挙動と略一致した。
Claims (8)
- 蓄電要素と、 該蓄電要素が収容される外装材と、 該外装材の膨張面に配置される変形センサと、を備え、 該変形センサは、エラストマーまたは樹脂からなる母材と該母材中に30vol%以上の充填率で充填されている導電性フィラーとを有し、該外装材の膨張に伴い曲げ変形するセンサ膜と、該センサ膜に接続される少なくとも一対の電極と、を備え、該センサ膜には、該導電性フィラー同士の接触により三次元的な導電パスが形成されており、該センサ膜の自然状態からの変形量が増加するに従って電気抵抗が増加し、 該センサ膜の曲げ変形に伴う電気抵抗の変化により、該外装材の膨張を検知することを特徴とする蓄電デバイス。
- 前記センサ膜は、前記外装材の前記膨張面の一端から他端に亘って配置される請求項1に記載の蓄電デバイス。
- 前記変形センサは、前記センサ膜が配置される基材を備え、該センサ膜が前記外装材の前記膨張面側になるよう配置され、 さらに、該基材側に配置され、該外装材が膨張するに従って該外装材との間で該センサ膜を押圧することにより該センサ膜の曲げ変形量を増加させる変形入力部材を備える請求項1に記載の蓄電デバイス。
- 前記変形入力部材は、前記変形センサと当接する曲面部を有する棒部材または紐部材であり、 該棒部材または紐部材は、該変形センサと交差するように配置される請求項3に記載の蓄電デバイス。
- 前記外装材の前記膨張面は、凹部を有し、 前記センサ膜は、該凹部に沿って曲げ変形された状態で配置される請求項1に記載の蓄電デバイス。
- 前記外装材は、フィルム部材からなり、 該外装材の前記膨張面は、該フィルム部材の端部同士が貼着された封止部を有し、 前記センサ膜は、該膨張面およびそれに続く該封止部に配置され、 該外装材の膨張により該封止部が起立するに従って、該センサ膜が曲げ変形される請求項1に記載の蓄電デバイス。
- さらに、前記蓄電要素、前記外装材、および前記変形センサが収容される筐体を備え、 該変形センサの一端は該筐体に取り付けられ、他端は該外装材の前記膨張面に取り付けられる請求項1に記載の蓄電デバイス。
- 前記センサ膜の前記母材は樹脂であり、該センサ膜には、曲げ変形した時に前記導電パスが切断される方向に、予めクラックが形成されている請求項1ないし請求項7のいずれかに記載の蓄電デバイス。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112011101585.2T DE112011101585B4 (de) | 2010-11-30 | 2011-11-24 | Elektrizitätssammelvorrichtung |
| CN201180056098.7A CN103229347B (zh) | 2010-11-30 | 2011-11-24 | 蓄电装置 |
| JP2012546800A JP5916623B2 (ja) | 2010-11-30 | 2011-11-24 | 蓄電デバイス |
| US13/687,554 US8986861B2 (en) | 2010-11-30 | 2012-11-28 | Electricity accumulation device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-266909 | 2010-11-30 | ||
| JP2010266909 | 2010-11-30 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/687,554 Continuation US8986861B2 (en) | 2010-11-30 | 2012-11-28 | Electricity accumulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012073770A1 true WO2012073770A1 (ja) | 2012-06-07 |
Family
ID=46171712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/076976 Ceased WO2012073770A1 (ja) | 2010-11-30 | 2011-11-24 | 蓄電デバイス |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8986861B2 (ja) |
| JP (1) | JP5916623B2 (ja) |
| CN (3) | CN105244557A (ja) |
| DE (1) | DE112011101585B4 (ja) |
| WO (1) | WO2012073770A1 (ja) |
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| JP2020187824A (ja) * | 2019-05-09 | 2020-11-19 | 三菱自動車工業株式会社 | 電池パックの異常検出装置 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105244557A (zh) | 2016-01-13 |
| JP5916623B2 (ja) | 2016-05-11 |
| DE112011101585T5 (de) | 2013-05-16 |
| US20130089765A1 (en) | 2013-04-11 |
| CN103229347B (zh) | 2015-11-25 |
| CN105244556A (zh) | 2016-01-13 |
| US8986861B2 (en) | 2015-03-24 |
| CN103229347A (zh) | 2013-07-31 |
| JPWO2012073770A1 (ja) | 2014-05-19 |
| DE112011101585B4 (de) | 2016-03-10 |
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