WO2013147292A1 - 温度調節機能付き電池 - Google Patents
温度調節機能付き電池 Download PDFInfo
- Publication number
- WO2013147292A1 WO2013147292A1 PCT/JP2013/059798 JP2013059798W WO2013147292A1 WO 2013147292 A1 WO2013147292 A1 WO 2013147292A1 JP 2013059798 W JP2013059798 W JP 2013059798W WO 2013147292 A1 WO2013147292 A1 WO 2013147292A1
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- WIPO (PCT)
- Prior art keywords
- battery
- film
- thin film
- temperature sensor
- heater
- Prior art date
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- 239000010408 film Substances 0.000 claims abstract description 101
- 239000010409 thin film Substances 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 43
- 239000013078 crystal Substances 0.000 claims description 34
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 28
- 230000020169 heat generation Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 17
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
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- 229910018509 Al—N Inorganic materials 0.000 description 7
- 238000005546 reactive sputtering Methods 0.000 description 7
- 239000004642 Polyimide Substances 0.000 description 6
- 239000012787 coverlay film Substances 0.000 description 6
- 230000004043 responsiveness Effects 0.000 description 6
- 229910010037 TiAlN Inorganic materials 0.000 description 5
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 229910004349 Ti-Al Inorganic materials 0.000 description 3
- 229910004692 Ti—Al Inorganic materials 0.000 description 3
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- 229910045601 alloy Inorganic materials 0.000 description 3
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- 238000010587 phase diagram Methods 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
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- -1 polyethylene terephthalate Polymers 0.000 description 2
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- 238000002233 thin-film X-ray diffraction Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229910004491 TaAlN Inorganic materials 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
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- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
-
- 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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
-
- 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
- H01G11/18—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
Definitions
- the present invention relates to a battery with a temperature adjustment function capable of temperature detection and temperature control in a Li ion secondary battery or the like.
- Patent Document 1 describes a battery system in which a capacitor inside a battery is heated by an alternating current and the temperature of the battery is controlled to suppress deterioration in battery performance.
- Patent Document 2 describes a battery system apparatus that controls battery temperature by heating an external battery heater by means of an auxiliary battery and a direct current to suppress battery performance degradation.
- Patent Document 3 describes a thin power storage device formed on a flexible substrate.
- the temperature sensor is a volumetric temperature sensing element such as a chip thermistor
- the responsiveness is low and the thickness of the entire battery is increased and the surface is increased.
- problems such as irregularities in the shape, making it difficult to store in a narrow space.
- the present invention has been made in view of the above-described problems, and is capable of accurately measuring the temperature of the battery, can perform heating control of the heater with high accuracy, and can be further reduced in thickness.
- An object is to provide a battery.
- the battery with a temperature adjusting function includes a battery body and a film heater with a temperature sensor provided so as to cover at least a part of the surface of the battery body.
- the heater wire is patterned on the insulating film or the insulating layer, and the temperature sensor portion is directly below or directly above the heat generation area of the heater wire, and the heater film is formed on the insulating film or the insulating layer. It has a thin film thermistor portion patterned with a thermistor material on top and a pair of pattern electrodes formed at least above or below the thin film thermistor portion. And features.
- the battery with temperature control function includes a film heater with a temperature sensor having a temperature sensor part and a heater wire provided to cover at least a part of the surface of the battery body, and the temperature sensor part has a thin film thermistor part. Therefore, temperature measurement and heating can be performed over a wide range of the surface of the battery body, and high-accuracy temperature control and circuit interruption due to abnormal heat generation can be achieved. Also, the average temperature of the entire heater wire or the entire battery body can be accurately measured with a thin film thermistor section directly below or directly above the heating area of the heater wire.
- the thin film thermistor is thinner and smaller in volume than chip thermistors and thermostats, so it has excellent responsiveness, small surface irregularities, and can be thinned as a whole, and installed in a narrow space. Easy to store. Furthermore, since the thin film thermistor portion is formed immediately below or immediately above the heat generation area of the heater wire, it is not necessary to install the temperature sensor portion in a location without the heater wire, and the entire area can be reduced. In addition, the film heater with a temperature sensor can be easily and highly adhered to the surface of the battery body due to high flexibility, and temperature measurement with high accuracy and high response is possible.
- a secondary battery such as a lithium ion secondary battery, a nickel hydride battery, a nickel cadmium battery, or a lithium polymer secondary battery, but also a battery pack in which one or more secondary batteries are housed in a container. Is also included as a battery body.
- the battery with temperature control function according to the second invention is characterized in that, in the first invention, the heater wire and the thin film thermistor portion extend over the entire outer periphery of the battery body. That is, in this battery with a temperature control function, the heater wire and the thin film thermistor portion extend over the entire outer periphery of the battery body, so that the average temperature in the entire periphery of the battery body can be measured. Even in a battery main body having a volume such as a mold, a cylinder, or a rectangular parallelepiped, the average temperature can be measured with higher accuracy.
- a battery with a temperature control function is the battery according to the first or second aspect, wherein the temperature sensor part is formed by patterning the thermistor material on the insulating film, and at least the thin film thermistor part.
- a pair of pattern electrodes formed on or under the thermistor portion, and the heater wire is patterned on the insulating layer formed on the thin film thermistor portion. That is, in this battery with a temperature control function, a thin film thermistor portion is formed on the flat surface of the insulating film, so that a thin film thermistor portion is formed via an insulating layer on a heater wire formed on the insulating film. Compared to, the reliability with respect to bending is improved.
- the inventors of the present invention focused on the AlN system among the nitride materials and made extensive research. As a result, it is difficult for AlN as an insulator to obtain optimum thermistor characteristics (B constant: about 1000 to 6000 K). For this reason, it was found that by replacing the Al site with a specific metal element that improves electrical conduction and having a specific crystal structure, a good B constant and heat resistance can be obtained without firing.
- the temperature sensor unit includes a film heater with a temperature sensor having a temperature sensor unit and a heater wire provided to cover at least a part of the surface of the battery body, Since it has a thin film thermistor section, it can accurately measure the temperature of the entire battery and can control the heating, is excellent in responsiveness, and can be easily installed and stored while suppressing the irregularities of the outer shape as much as possible. Therefore, it is possible to measure the temperature of the battery body with high accuracy and high responsiveness and to control the heating, and to control the charging state with high accuracy and to prevent excessive heat generation and to ensure high safety. become.
- 1st Embodiment of the battery with a temperature control function which concerns on this invention, it is a top view which shows the battery with a temperature control function before covering with an insulating tape. It is the sectional view on the AA line of FIG.
- 1st Embodiment it is a perspective view which shows the battery with a temperature control function of the battery main body (a), before covering with an insulating tape (b), and after covering (c).
- it is a Ti-Al-N type
- 1st Embodiment it is a top view which shows a thin film thermistor part formation process and a pattern electrode formation process in the manufacturing method of the battery with a temperature control function.
- 1st Embodiment it is a top view which shows an insulating layer formation process and a heater wire formation process in the manufacturing method of the battery with a temperature control function.
- 2nd Embodiment of the battery with a temperature control function which concerns on this invention, it is a perspective view which shows a battery main body (a), before covering with an insulating tape (b), and after covering (c).
- Example of the battery with a temperature control function which concerns on this invention, it is the front view and top view which show the element for film
- it is a graph which shows the relationship between 25 degreeC resistivity and B constant.
- it is a graph which shows the relationship between Al / (Ti + Al) ratio and B constant.
- XRD X-ray diffraction
- XRD X-ray diffraction
- Example which concerns on this invention it is a cross-sectional SEM photograph which shows an Example with strong c-axis orientation.
- Example which concerns on this invention it is a cross-sectional SEM photograph which shows an Example with a strong a-axis orientation.
- the battery 1 with a temperature adjustment function of the present embodiment includes a battery body B1 and a film heater 10 with a temperature sensor provided to cover at least a part of the surface of the battery body B1. It has.
- the film heater 10 with a temperature sensor is affixed covering the whole one side of battery main body B1.
- the battery body B1 is, for example, a thin rectangular parallelepiped (thin plate) Li-ion secondary battery, as shown in FIG. 3A, and a pair of battery lead wires 12 protrude from the end face.
- the film heater with temperature sensor 10 includes an insulating film 2, a temperature sensor part TS formed on the insulating film 2, and a heater wire formed on the temperature sensor part TS via an insulating layer 5. 6 is provided.
- the heater wire 6 is patterned on the insulating layer 5, and the temperature sensor portion TS is a thin film thermistor portion that is patterned immediately below the heat generation area of the heater wire 6 and on the insulating film 2 with the thermistor material. 3 and a pair of pattern electrodes 4 formed on at least the thin film thermistor portion 3.
- the insulating film 2 is formed in a band shape with, for example, a polyimide resin sheet.
- a polyimide resin sheet for example, PET: polyethylene terephthalate, PEN: polyethylene naphthalate, or the like may be used.
- the pair of pattern electrodes 4 has a pair of counter electrode portions 4 a provided on the thin film thermistor portion 3.
- the pair of pattern electrodes 4 has a Cr bonding layer (not shown) formed on the thin film thermistor portion 3 and an electrode layer (not shown) formed of a noble metal on the bonding layer.
- the pair of pattern electrodes 4 includes a plurality of pairs of the counter electrode portions 4a which are a pair of comb electrode portions of a comb pattern arranged in opposition to each other, and a distal end portion connected to these counter electrode portions 4a and a base end portion is insulative And a pair of linearly extending portions 4b extending at the ends of the film 2.
- the insulating layer 5 is a resin film, such as a polyimide coverlay film. Although the insulating layer 5 may be formed by printing polyimide or epoxy resin material, a film is desirable in terms of flatness.
- the heater wire 6 is disposed immediately above the region between the pair of counter electrode portions 4a.
- the heater wire 6 is formed immediately above the thin film thermistor portion 3 and is repeatedly folded back into a meander shape 4a. And a pair of heater base end portions 6b that are arranged to extend. That is, the meander portion 4a becomes a heat generating region of the heater wire 6, and is a sheet heating element, that is, a sheet film heater. In the cross-sectional view shown in FIG. 1B, the number of counter electrode portions 4a and meander portions 4a is reduced.
- the polyimide coverlay film 7 is pressure-bonded on the insulating film 2 except for the end portion of the insulating film 2 including the linearly extending portion 4b and the base end side of the heater base end portion 6b.
- polyimide or epoxy resin material may be formed on the insulating film 2 by printing.
- the thin film thermistor portion 3 is formed of a TiAlN thermistor material.
- this metal nitride material has a composition in a region surrounded by points A, B, C, and D in the Ti—Al—N ternary phase diagram, and the crystal phase is It is a metal nitride that is a wurtzite type.
- each composition ratio (x, y, z) (atomic%) of the points A, B, C, and D is A (15, 35, 50), B (2.5, 47.5, 50), C (3, 57, 40), D (18, 42, 40).
- the thin film thermistor portion 3 is a columnar crystal formed in a film shape and extending in a direction perpendicular to the surface of the film. Further, it is preferable that the c-axis is oriented more strongly than the a-axis in the direction perpendicular to the film surface. Whether the a-axis orientation (100) is strong or the c-axis orientation (002) is strong in the direction perpendicular to the film surface (film thickness direction) is determined using X-ray diffraction (XRD).
- XRD X-ray diffraction
- the terminal part 4c of the pattern electrode 4 (the base end part of the linearly extending part 4b) and the terminal part 6c of the heater wire 6 (the base end part of the heater base end part 6b) are respectively The leading end of the lead wire 13 is soldered.
- the pattern electrode 4 and the heater wire 6 are electrically connected to the temperature control device 14 via the corresponding lead wires 13, respectively.
- the heater wire 6 is electrically connected to the temperature control device 14 via the auxiliary battery 15.
- the method of manufacturing the film heater with temperature sensor 10 includes a thin film thermistor portion forming step of patterning the thin film thermistor portion 3 on the insulating film 2 and a pair of opposing electrode portions 4a facing each other on the thin film thermistor portion 3.
- an electrode forming step of patterning a pair of pattern electrodes 4 on the insulating film 2 an insulating layer forming step of covering the pattern electrode 4 on the thin film thermistor portion 3 and forming an insulating layer 5, and the insulating layer 5
- a heater wire forming step for patterning the heater wire 6 on the top and a protective film forming step for covering the whole with a polyimide coverlay film 7 except for the end portions of the pattern electrode 4 and the heater wire 6.
- Ti x Al y is used in a reactive sputtering method in a nitrogen-containing atmosphere using a Ti—Al alloy sputtering target on a polyimide film insulating film 2 having a thickness of 50 ⁇ m.
- the sputtering conditions at that time were an ultimate vacuum of 5 ⁇ 10 ⁇ 6 Pa, a sputtering gas pressure of 0.4 Pa, a target input power (output) of 200 W, and a nitrogen gas fraction of 20 in a mixed gas atmosphere of Ar gas + nitrogen gas. %.
- pre-baking was performed at 110 ° C. for 1 minute 30 seconds, and after exposure with an exposure apparatus, unnecessary portions were removed with a developer, and 150 ° C. Patterning is performed by post-baking for 5 minutes. Thereafter, an unnecessary TiAlN thermistor material layer is wet-etched with a commercially available Ti etchant to form a thin film thermistor portion 3 having a desired shape by resist stripping as shown in FIG.
- a 20 nm-thick Cr film bonding layer is formed on the thin film thermistor portion 3 and the insulating film 2 by sputtering. Further, an Au film electrode layer is formed to a thickness of 100 nm on the bonding layer by sputtering.
- a resist solution is applied onto the electrode layer thus formed by a bar coater, pre-baked at 110 ° C. for 1 minute 30 seconds, exposed to light using an exposure device, and then an unnecessary portion is removed with a developer. Patterning is performed by post-baking for minutes. Thereafter, unnecessary electrode portions are wet-etched in the order of commercially available Au etchant and Cr etchant, and as shown in FIG. 5B, a desired pattern electrode 4 is formed by resist stripping. In this way, the temperature sensor unit TS is manufactured.
- a polyimide cover lay film having a thickness of 12.5 ⁇ m with an adhesive is placed thereon so as to cover the thin film thermistor portion 3 together with the counter electrode portion 4a, and pressurized at 150 ° C. and 2 MPa for 10 minutes by a press machine.
- the insulating layer 5 is formed by bonding, as shown in FIG.
- a NiCr film to be the heater wire 6 is formed to 500 nm on the insulating layer 5 by sputtering.
- a resist solution is applied on the top with a bar coater, prebaked at 110 ° C. for 1 minute and 30 seconds, exposed to light using an exposure device, then unnecessary portions are removed with a developer, and patterning is performed by post baking at 150 ° C. for 5 minutes. Do.
- an unnecessary NiCr film is wet-etched with a commercially available NiCr etchant, and resist stripping is performed to remove a thin film thermistor with a heater wire 6 having a meander portion 4a sandwiching an insulating layer 5 as shown in FIG. It forms so that it may be arrange
- FIG. The heater wire 6 has a large difference in thickness with respect to the insulating layer 5, and the entire insulating layer 5 including the base end portion of the heater base end portion 6 b is prevented in order to prevent disconnection due to a step of the insulating layer 5. Formed on top.
- a polyimide cover lay film 7 having a thickness of 50 ⁇ m with an adhesive as a protective film is placed on the insulating film 2 except for the base end portions of the linearly extending portion 4b and the heater base end portion 6b. And pressure is applied at 150 ° C. and 2 MPa for 10 minutes. As a result, the overall thickness becomes 150 ⁇ m. Further, the film heater 10 with a temperature sensor is manufactured by applying Au plating to the pattern electrodes 4 and the terminal portions 4c and 6c of the heater wire 6 with a thickness of 5 ⁇ m by electrolytic plating and soldering the lead wires 13 to each other.
- the width and interval of the meander part 4a are adjusted to be large, and the thin film thermistor is adjusted according to the size of the meander part 4a. What is necessary is just to adjust the width
- the film heater with temperature sensor 10 is adhered to the surface (one side) of the battery body B1 with a film 17 with a double-sided adhesive. Further, as shown in FIG. 3 (c), the battery 1 with a temperature adjusting function is manufactured by wrapping the outer periphery of the battery body B1 so as to be covered with the insulating tape 16 together with the film heater 10 with the temperature sensor.
- the battery 1 with a temperature adjustment function of the present embodiment includes the film heater 10 with a temperature sensor including the temperature sensor unit TS and the heater wire 6 provided so as to cover at least a part of the surface of the battery body B1. Since the temperature sensor unit TS includes the thin film thermistor unit 3, temperature measurement and heating can be performed over a wide range of the surface of the battery body B 1, and high-accuracy temperature control and circuit interruption due to abnormal heat generation can be performed. .
- the thin film thermistor portion 3 disposed immediately below the heat generation area of the heater wire 6 can accurately measure the average temperature of the entire heater wire 6 or the entire battery body B1.
- the thin film thermistor section 3 is thinner and smaller in volume than a chip thermistor or thermostat, it has excellent responsiveness and small surface irregularities, making it possible to reduce the overall thickness of the thin film thermistor section 3. Easy to install and store.
- the thin film thermistor portion 3 is formed immediately below the heat generating region of the heater wire 6, it is not necessary to install the temperature sensor portion TS in a location where the heater wire 6 is not present, and the entire area can be reduced.
- the film heater with temperature sensor 10 can be easily and highly adhered to the surface of the battery body B1 with high flexibility, and temperature measurement with high accuracy and high response is possible. Further, since the heater wire 6 is arranged immediately above the region between the pair of counter electrode portions 4a that are the temperature detection portion of the thin film thermistor portion 3, the temperature of the heater wire 6 can be measured with high accuracy.
- the film is formed by reactive sputtering in a nitrogen-containing atmosphere using a Ti—Al alloy sputtering target, the above-mentioned TiAlN is used.
- the metal nitride material can be formed without firing. Further, by setting the sputtering gas pressure in reactive sputtering to less than 0.67 Pa, a metal nitride material film in which the c-axis is oriented more strongly than the a-axis in the direction perpendicular to the film surface is formed. be able to.
- the thin film thermistor portion 3 is formed of the thermistor material layer on the insulating film 2, the thin film is formed by non-firing and has a high B constant and high heat resistance.
- the thermistor portion 3 can use the insulating film 2 having low heat resistance such as a resin film, and a thin and flexible temperature sensor portion having good thermistor characteristics.
- a film heater 10 with a temperature sensor is wrapped around and attached to the entire outer periphery of the battery body B1, and the heater wire 6 and the thin film thermistor portion 3 are connected to the battery.
- a battery 1B with a temperature control function may be provided that extends over the entire outer periphery of the main body B1.
- the heater wire 6 and the thin film thermistor section 3 extend over the entire outer periphery of the battery body B1, the average temperature in the entire periphery of the battery body B1 can be measured, and the battery can be measured with higher accuracy.
- the average temperature of the main body B1 can be measured.
- the film heater 10 with a temperature sensor can be easily and highly adhered to the outer periphery of the battery body B1 with high flexibility, and temperature measurement with high accuracy and high responsiveness is possible.
- the battery body B1 is a thin plate-like secondary battery
- the battery with temperature control function 21 of the second embodiment is As shown in FIG. 8, the battery main body B2 is a cylindrical secondary battery, and the film heater with temperature sensor 10 is wound around and attached to the entire circumference of the battery main body B2.
- the film heater with temperature sensor 10 is wound so as to cover the entire outer peripheral surface of the battery body B2, and the heater wire 6 and the thin film thermistor section 3 are connected to the battery body B2. Since it extends over the entire outer periphery, the average temperature in the entire periphery of the battery body B2 can be measured.
- the battery body B2 has a cylindrical volume and can measure the average temperature with high accuracy.
- a film evaluation element 121 shown in FIG. 9 was produced as follows. First, by reactive sputtering, Ti—Al alloy targets having various composition ratios are used to form Si substrates S on a Si wafer with a thermal oxide film at various composition ratios shown in Table 1 having a thickness of 500 nm. A thin film thermistor portion 3 of the formed metal nitride material was formed.
- the sputtering conditions at that time were: ultimate vacuum: 5 ⁇ 10 ⁇ 6 Pa, sputtering gas pressure: 0.1 to 1 Pa, target input power (output): 100 to 500 W, and in a mixed gas atmosphere of Ar gas + nitrogen gas The nitrogen gas fraction was changed to 10 to 100%.
- a 20 nm Cr film was formed on the thin film thermistor portion 3 by sputtering, and a 200 nm Au film was further formed. Furthermore, after applying a resist solution thereon with a spin coater, pre-baking is performed at 110 ° C. for 1 minute 30 seconds, and after exposure with an exposure apparatus, unnecessary portions are removed with a developing solution, and post baking is performed at 150 ° C. for 5 minutes. Patterning. Thereafter, unnecessary electrode portions were wet-etched with a commercially available Au etchant and Cr etchant, and a patterned electrode 124 having a desired comb-shaped electrode portion 124a was formed by resist stripping.
- the X-ray source is MgK ⁇ (350 W)
- the path energy is 58.5 eV
- the measurement interval is 0.125 eV
- the photoelectron extraction angle with respect to the sample surface is 45 deg
- the analysis area is about Quantitative analysis was performed under the condition of 800 ⁇ m ⁇ .
- the quantitative accuracy the quantitative accuracy of N / (Ti + Al + N) is ⁇ 2%
- the quantitative accuracy of Al / (Ti + Al) is ⁇ 1%.
- the Ti x Al y N 3 ternary triangular diagram of the composition ratio shown in FIG. 4 of z, the points A, B, C, in a region surrounded by D, ie, "0.70 ⁇ y / (x + y) ⁇ 0.95, 0.4 ⁇ z ⁇ 0.5, x + y + z 1 ”, thermistor characteristics of resistivity: 100 ⁇ cm or more, B constant: 1500 K or more Has been achieved.
- FIG. 10 is a graph showing the relationship between the resistivity at 25 ° C. and the B constant based on the above results.
- a high resistance and high B constant region having a specific resistance value at 25 ° C. of 100 ⁇ cm or more and a B constant of 1500 K or more can be realized.
- the B constant varies for the same Al / (Ti + Al) ratio because the amount of nitrogen in the crystal is different.
- Comparative Examples 1 and 2 shown in Table 1 are regions where N / (Ti + Al + N) is less than 40%, and the metal is in a crystalline state with insufficient nitriding.
- Comparative Examples 1 and 2 neither the NaCl type nor the wurtzite type was in a state of very poor crystallinity. Further, in these comparative examples, it was found that both the B constant and the resistance value were very small and close to the metallic behavior.
- Thin film X-ray diffraction (identification of crystal phase)
- the crystal phase of the thin film thermistor part 3 obtained by reactive sputtering was identified by oblique incidence X-ray diffraction (Grazing Incidence X-ray Diffraction). .
- the example in which the film was formed at a sputtering gas pressure of less than 0.67 Pa was a film having a (002) strength much stronger than (100) and a stronger c-axis orientation than a-axis orientation.
- the example in which the film was formed at a sputtering gas pressure of 0.67 Pa or higher was a material having a (100) strength much stronger than (002) and a a-axis orientation stronger than the c-axis orientation. It is confirmed that a single wurtzite-type phase is formed even if a polyimide film is formed under the same film formation conditions. Moreover, even if it forms into a film on a polyimide film on the same film-forming conditions, it has confirmed that orientation does not change.
- FIG. 13 shows an example of the XRD profile of the embodiment with strong a-axis orientation.
- Al / (Ti + Al) 0.83 (wurtzite type, hexagonal crystal), and the incident angle was measured as 1 degree.
- the intensity of (100) is much stronger than (002).
- the symmetric reflection measurement was performed with the incident angle set to 0 degree.
- (*) In the graph is the peak derived from the device, and it is confirmed that it is not the peak of the sample body or the peak of the impurity phase (note that the peak disappears in the symmetric reflection measurement. (It can be seen that the peak is derived from the device.)
- the TiAlN thin film thermistor portion is preferable, but a thin film thermistor portion formed of another thermistor material may be adopted.
- the pattern electrode is formed on the thin film thermistor portion, the pattern electrode may be formed below the thin film thermistor portion.
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Abstract
Description
また、特許文献2には、補助電池と直流電流により、電池外部ヒータを加熱して電池の温度を制御して電池の性能低下を抑制する電池システム装置が記載されている。さらに、特許文献3には、フレキシブル基板上に形成した薄い蓄電デバイスが記載されている。
2上に形成された温度センサ部TSと、該温度センサ部TSの上に絶縁層5を介して形成されたヒータ線6とを備えている。 上記ヒータ線6は、絶縁層5の上にパターン形成され、温度センサ部TSは、ヒータ線6の発熱領域の直下であって絶縁性フィルム2の上にサーミスタ材料でパターン形成された薄膜サーミスタ部3と、少なくとも薄膜サーミスタ部3の上に形成された一対のパターン電極4とを有している。
置由来のピークであり、サンプル本体のピーク、もしくは、不純物相のピークではないことを確認している(なお、対称反射測定において、そのピークが消失していることからも装置由来のピークであることがわかる。)。
Claims (4)
- 電池本体と、 該電池本体の表面の少なくとも一部を覆って設けられた温度センサ付きフィルムヒータとを備え、 該温度センサ付きフィルムヒータが、絶縁性フィルムと、該絶縁性フィルム上に形成された温度センサ部及びヒータ線の一方と、該一方の上に絶縁層を介して形成された前記温度センサ部及び前記ヒータ線の他方とを備え、 前記ヒータ線が、前記絶縁性フィルム又は前記絶縁層の上にパターン形成され、 前記温度センサ部が、前記ヒータ線の発熱領域の直下又は直上であって前記絶縁性フィルム又は前記絶縁層の上にサーミスタ材料でパターン形成された薄膜サーミスタ部と、少なくとも前記薄膜サーミスタ部の上又は下に形成された一対のパターン電極とを有していることを特徴とする温度調節機能付き電池。
- 請求項1に記載の温度調節機能付き電池において、 前記ヒータ線及び前記薄膜サーミスタ部が、前記電池本体の外周全体を覆って延在していることを特徴とする温度調節機能付き電池。
- 請求項1に記載の温度調節機能付き電池において、 前記温度センサ部が、前記絶縁性フィルム上にサーミスタ材料でパターン形成された前記薄膜サーミスタ部と、少なくとも前記薄膜サーミスタ部の上又は下に形成された一対のパターン電極とを有し、 前記ヒータ線が、前記薄膜サーミスタ部上に形成された前記絶縁層の上にパターン形成されていることを特徴とする温度調節機能付き電池。
- 請求項1に記載の温度調節機能付き電池において、 前記薄膜サーミスタ部が、一般式:TixAlyNz(0.70≦y/(x+y)≦0.95、0.4≦z≦0.5、x+y+z=1)で示される金属窒化物からなり、その結晶構造が、六方晶系のウルツ鉱型の単相であることを特徴とする温度調節機能付き電池。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US14/389,178 US20150171489A1 (en) | 2012-03-30 | 2013-03-25 | Battery with temperature adustment function |
CN201380013471.XA CN104185881A (zh) | 2012-03-30 | 2013-03-25 | 带温度调节功能的电池 |
EP13768470.0A EP2833374B1 (en) | 2012-03-30 | 2013-03-25 | Battery with temperature control function |
KR1020147027354A KR20150002633A (ko) | 2012-03-30 | 2013-03-25 | 온도 조절 기능이 부여된 전지 |
Applications Claiming Priority (2)
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JP2012-081112 | 2012-03-30 | ||
JP2012081112A JP5978718B2 (ja) | 2012-03-30 | 2012-03-30 | 温度調節機能付き電池 |
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WO2013147292A1 true WO2013147292A1 (ja) | 2013-10-03 |
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PCT/JP2013/059798 WO2013147292A1 (ja) | 2012-03-30 | 2013-03-25 | 温度調節機能付き電池 |
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US (1) | US20150171489A1 (ja) |
EP (1) | EP2833374B1 (ja) |
JP (1) | JP5978718B2 (ja) |
KR (1) | KR20150002633A (ja) |
CN (1) | CN104185881A (ja) |
TW (1) | TWI545830B (ja) |
WO (1) | WO2013147292A1 (ja) |
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EP2889949A1 (en) * | 2013-12-27 | 2015-07-01 | SK Innovation Co., Ltd. | Temperature-raising system for battery module and method for controlling the system |
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US9972869B2 (en) | 2014-01-31 | 2018-05-15 | Lg Chem, Ltd. | Battery cell assembly having improved thermal sensing capability |
CN106104906B (zh) * | 2014-01-31 | 2019-09-10 | 株式会社Lg 化学 | 电池单元组件 |
US10062930B2 (en) | 2015-08-20 | 2018-08-28 | Lg Chem, Ltd. | Battery cell assembly |
CN107895825A (zh) * | 2017-10-30 | 2018-04-10 | 常州普莱德新能源电池科技有限公司 | 电池加热片 |
US20220173449A1 (en) * | 2020-11-30 | 2022-06-02 | Toyota Jidosha Kabushiki Kaisha | Battery pack |
US11955614B2 (en) * | 2020-11-30 | 2024-04-09 | Toyota Jidosha Kabushiki Kaisha | Battery pack including a heater substrate |
Also Published As
Publication number | Publication date |
---|---|
TW201401617A (zh) | 2014-01-01 |
KR20150002633A (ko) | 2015-01-07 |
EP2833374A4 (en) | 2015-11-11 |
TWI545830B (zh) | 2016-08-11 |
CN104185881A (zh) | 2014-12-03 |
JP2013211436A (ja) | 2013-10-10 |
JP5978718B2 (ja) | 2016-08-24 |
EP2833374A1 (en) | 2015-02-04 |
US20150171489A1 (en) | 2015-06-18 |
EP2833374B1 (en) | 2020-02-26 |
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