WO2017081833A1 - 電子機器 - Google Patents
電子機器 Download PDFInfo
- Publication number
- WO2017081833A1 WO2017081833A1 PCT/JP2016/004469 JP2016004469W WO2017081833A1 WO 2017081833 A1 WO2017081833 A1 WO 2017081833A1 JP 2016004469 W JP2016004469 W JP 2016004469W WO 2017081833 A1 WO2017081833 A1 WO 2017081833A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat storage
- storage material
- battery
- electronic device
- control circuit
- Prior art date
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- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
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- 238000005070 sampling Methods 0.000 description 1
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- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
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- DGPIGKCOQYBCJH-UHFFFAOYSA-M sodium;acetic acid;hydroxide Chemical compound O.[Na+].CC([O-])=O DGPIGKCOQYBCJH-UHFFFAOYSA-M 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- WYIXXSYDQFHKFE-UHFFFAOYSA-L strontium;dihydroxide;hydrate Chemical compound O.[OH-].[OH-].[Sr+2] WYIXXSYDQFHKFE-UHFFFAOYSA-L 0.000 description 1
- 150000005846 sugar alcohols Chemical class 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
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- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- RMNIZOOYFMNEJJ-UHFFFAOYSA-K tripotassium;phosphate;hydrate Chemical compound O.[K+].[K+].[K+].[O-]P([O-])([O-])=O RMNIZOOYFMNEJJ-UHFFFAOYSA-K 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- SUJUOAZFECLBOA-UHFFFAOYSA-N tritriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC SUJUOAZFECLBOA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- CHSMNMOHKSNOKO-UHFFFAOYSA-L zinc;dichloride;hydrate Chemical compound O.[Cl-].[Cl-].[Zn+2] CHSMNMOHKSNOKO-UHFFFAOYSA-L 0.000 description 1
- FOSPKRPCLFRZTR-UHFFFAOYSA-N zinc;dinitrate;hydrate Chemical compound O.[Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O FOSPKRPCLFRZTR-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
- H01L23/3675—Cooling facilitated by shape of device characterised by the shape of the housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3737—Organic materials with or without a thermoconductive filler
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14618—Containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/024—Arrangements for cooling, heating, ventilating or temperature compensation
-
- 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
-
- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
-
- 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
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2217/00—Details of cameras or camera bodies; Accessories therefor
- G03B2217/007—Details of energy supply or management
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02E60/14—Thermal energy storage
Definitions
- This technology relates to electronic equipment.
- Patent Document 1 a method of absorbing heat by using a heat storage material and suppressing a temperature rise has been proposed.
- Patent Document 1 shows that by using a latent heat storage material, it is possible to suppress an increase in the temperature of the casing of the electronic device and an internal temperature rise, or to continuously cool the housing with a replaceable heat storage material. .
- a limit temperature that can be used for each electronic member disposed inside, and it is necessary to design the entire thermal design including the heat storage material so as not to exceed this limit temperature.
- the temperature limit of the battery is generally lower than that of the semiconductor chip, it is also necessary to suppress heat transfer from the semiconductor chip.
- the present technology has been made in view of such problems, and an object of the present technology is to provide an electronic device that can efficiently suppress the temperature rise of the casing and the internal temperature rise.
- the present technology is provided between a control circuit and a battery in a housing, a control circuit provided in the housing, a battery provided in the housing, and the housing.
- An electronic device comprising a heat storage material and a gap provided between a control circuit and the battery
- the effect described here is not necessarily limited, and may be any effect described in the specification.
- FIG. 1 is a schematic cross-sectional view in plan view showing an internal configuration of an electronic apparatus according to a first embodiment. It is a graph for demonstrating the transition temperature of a thermal storage material. It is a graph which shows the temperature change of the battery with which an electronic device is provided.
- 4A is a schematic cross-sectional view in plan view showing the internal configuration of the electronic apparatus according to the first comparative example
- FIG. 4B is a schematic cross-sectional view in plan view showing the internal configuration of the electronic apparatus in the second comparative example. is there.
- It is a planar view schematic sectional drawing which shows the internal structure of the electronic device which concerns on 2nd Embodiment.
- It is a planar view schematic sectional drawing which shows the internal structure of the electronic device which concerns on 3rd Embodiment.
- FIG. 1 is a schematic sectional view in plan view showing the configuration of the electronic apparatus 10.
- the electronic device 10 includes a housing 11, a lens barrel 12, an image sensor 14, a control circuit 15, a battery 16, a heat dissipation sheet 17, a first heat storage material 18a, and a second heat storage material 18b.
- the housing 11 is made of a synthetic resin such as plastic, metal, or the like, and constitutes the exterior of the electronic device 10.
- a lens barrel 12 an image sensor 14, a control circuit 15, a battery 16, a first heat storage material 18a, and a second heat storage material 18b are provided.
- a drive mechanism for moving a photographing lens 13 for condensing light from a subject onto the image sensor 14 to perform focusing and zooming. These are driven under the control of the control circuit 15. A light image of the subject obtained through the photographing lens 13 is formed on the image sensor 14.
- the drive mechanism, the iris mechanism, the shutter mechanism, and the like operate under the control of the control circuit 15 by a lens drive driver (not shown) configured by, for example, a microcomputer.
- the image sensor 14 photoelectrically converts incident light from the subject, converts it into a charge amount, and outputs it as an analog image signal.
- An analog image signal output from the image sensor 14 is output to the control circuit 15.
- a CCD Charge-Coupled Device
- CMOS Complementary Metal-Oxide Semiconductor
- the image sensor 14 is one of heat generation sources in the electronic device 10.
- the control circuit 15 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like.
- the ROM stores a program that is read and operated by the CPU.
- the RAM is used as a work memory for the CPU.
- the CPU controls the entire electronic device 10 and each unit by executing various processes according to programs stored in the ROM and issuing commands.
- the control circuit 15 is mounted on the electronic device 10 in the form of, for example, a semiconductor integrated circuit or a semiconductor chip.
- the control circuit 15 is one of heat generation sources in the electronic device 10.
- the control circuit 15 performs sample hold on the image signal output from the image sensor 14 so as to maintain a good S / N (Signal / Noise) ratio by CDS (Correlated Double Sampling) processing. Further, the gain is controlled by AGC (Auto-Gain-Control) processing, A / D (Analog / Digital) conversion is performed, and a digital image signal is output.
- AGC Auto-Gain-Control
- a / D Analog / Digital
- control circuit 15 performs predetermined signal processing such as demosaic processing, white balance adjustment processing, color correction processing, gamma correction processing, Y / C conversion processing, AE (Auto-Exposure) processing, resolution conversion processing on the image signal. Apply. Further, the control circuit 15 performs, for example, an encoding process for recording or communication on the image data on which the predetermined process has been performed.
- predetermined signal processing such as demosaic processing, white balance adjustment processing, color correction processing, gamma correction processing, Y / C conversion processing, AE (Auto-Exposure) processing, resolution conversion processing on the image signal. Apply. Further, the control circuit 15 performs, for example, an encoding process for recording or communication on the image data on which the predetermined process has been performed.
- the battery 16 is a power source for supplying power to each unit constituting the electronic device 10.
- a lithium ion battery is used as the battery 16.
- the battery 16 is one of heat generation sources in the electronic device 10.
- the heat dissipation sheet 17 is provided so as to be interposed between the control circuit 15 and the first heat storage material 18 a and is in contact with the control circuit 15.
- the heat radiating sheet 17 is for radiating heat generated from the control circuit 15.
- the temperature rise of the control circuit 15 can be suppressed by providing the heat radiating sheet 17, the heat radiating sheet 17 is not essential for the present technology.
- a first heat storage material 18 a is provided on the control circuit 15 side in the housing 11.
- the first heat storage material 18 a is provided so as to be thermally connected to the surface of the control circuit 15 facing the battery 16 via the heat radiating sheet 17.
- the 1st heat storage material 18a is for suppressing the temperature rise of the electronic device 10 by storing the heat generated from the control circuit 15 in the form of latent heat.
- a second heat storage material 18 b is provided on the battery 16 side in the housing 11.
- the second heat storage material 18b also functions as a battery case.
- the second heat storage material 18b is thermally connected to the surface of the battery 16 on the side facing the control circuit 15, and suppresses the temperature rise of the electronic device 10 by storing the heat generated from the battery 16 in the form of latent heat. Is to do.
- a gap 19 is provided between the first heat storage material 18a and the second heat storage material 18b.
- the air gap 19 is provided between the first heat storage material 18 a and the second heat storage material 18 b and between the control circuit 15 and the battery 16.
- the air gap 19 is for suppressing the heat generated from the control circuit 15 from being transmitted to the battery 16 via the first heat storage material 18a and the second heat storage material 18b, and the temperature of the battery 16 rising.
- the gap 19 is configured in a substantially straight line extending substantially perpendicular to the direction in which the control circuit 15 and the battery 16 are arranged.
- the dimension of the gap 19 (the distance between the first heat storage material 18a and the second heat storage material 18b) varies depending on the size of the electronic device 10, but is preferably at least 0.1 mm or more. In the present embodiment, the size of the gap is 0.7 mm.
- the first heat storage material 18a is formed in a rectangular parallelepiped shape having a substantially rectangular shape in plan view.
- the surface of the second heat storage material 18b on the side of the first heat storage material 18a is formed in a concave shape, and both ends of the first heat storage material 18a are configured to contact the inner side surface of the second heat storage material 18b, respectively. Both ends of the first heat storage material 18a may be fixed to the inner side surface of the second heat storage material 18b with an adhesive or the like.
- the 1st heat storage material 18a and the 2nd heat storage material 18b can be kept in a more stable state.
- gap 19 exists between the 1st heat storage material 18a and the 2nd heat storage material 18b, and the edge part is connected, what kind of shape may be sufficient.
- the first heat storage material 18a is formed in a substantially concave shape
- the second heat storage material 18b is formed in a substantially rectangular parallelepiped shape in plan view
- both ends of the second heat storage material 18b are on the inner surface of the first heat storage material 18a, respectively. You may make it contact.
- the first heat storage material 18a and the second heat storage material 18b are made of a latent heat storage material that undergoes a phase transition at 0 to 100 degrees. More specifically, the first heat storage material 18a provided on the control circuit 15 side is configured to have a transition temperature of about 50 degrees to about 80 degrees. Further, the second heat storage material 18b provided on the battery 16 side is configured to have a transition temperature of about 40 to 70 degrees. This is because the control circuit 15 generally tends to increase in temperature when the electronic device 10 is used than the battery 16. However, when the temperature of the battery 16 is higher than that of the control circuit 15, the transition temperature of the second heat storage material 18b on the battery 16 side is set higher than the transition temperature of the first heat storage material 18a on the control circuit 15 side. May be.
- the transition temperature is a temperature at which the transition starts, and differs depending on the substance.
- the transition temperature of VO 2 described below is about 66 to 68 degrees C.
- the transition temperature can be lowered only by doping a small amount of a different element. Therefore, it is a suitable heat storage material as the first heat storage material 18a and the second heat storage material 18b.
- the transition start temperature at the time of temperature rise is 66.3 degrees
- the end temperature is 69.4 degrees
- the transition width is 3.1 degrees, which is a sharp transition.
- the heat of transition is as high as 238 J / cc. This transition temperature is variable by doping with W (tungsten) or the like.
- a VO 2 / resin composite material in which VO 2 that is a solid phase transition material is combined with a resin (plastic such as polycarbonate or ABS resin) can be used. It can also be used a VO 2 metal (aluminum, aluminum alloy, magnesium alloy, copper, or the like) VO 2 / metal composite complexed to.
- a VO 2 / resin composite material is characterized by a high thermal conductivity of about 1 W / m ⁇ K (the thermal conductivity of a general resin / plastic is 0.2 W / m ⁇ K). This is the same level of performance as a thermally conductive resin (a resin with high heat dissipation performance).
- a thermally conductive resin a resin with high heat dissipation performance.
- a V-resin-based heat storage member having a desired shape can be created by mixing VO 2 powder and resin, pelletizing, and injection molding. If it is used where a resin member is used, heat storage performance can be imparted as it is.
- the VO 2 / metal composite material is a heat storage material with high thermal conductivity and high heat dissipation performance.
- VO 2 powder and Al powder are put into a carbon mold and Al is melted at 700 ° C. while applying high pressure to produce a composite of VO 2 / Al (42 vol% / 58 vol%), the characteristics are latent heat
- the heat storage density was 100 J / cc, and the thermal conductivity was 63 W / m ⁇ K. This is a value higher than the thermal conductivity 15 W / m ⁇ K of SUS (stainless steel).
- the electronic device 10 may further include a storage medium, a display unit, an input unit, a communication terminal, and the like.
- the storage medium is a large-capacity storage medium such as an HDD (Hard Disc Drive), an SSD (Solid State Drive), or an SD memory card.
- An image photographed by the electronic device 10 is stored in a compressed state based on a standard such as JPEG (Joint Photographic Experts Group).
- JPEG Joint Photographic Experts Group
- EXIF Exchangeable Image File Format
- the moving image is stored in a format such as MPEG2 (Moving Picture Picture Experts Group2) or MPEG4.
- the display unit is a display device configured by, for example, an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), an organic EL (Electro Luminescence) panel, or the like.
- LCD Liquid Crystal Display
- PDP Plasma Display Panel
- organic EL Electro Luminescence
- a user interface of the electronic device 10 a menu screen, a monitoring image being captured, a captured image recorded in a storage medium, a captured moving image, and the like are displayed.
- the input unit includes, for example, a power button for switching power on / off, a release button for instructing start of recording of a captured image, a zoom adjustment operator, a touch screen configured integrally with the display unit, and the like. Become. When an input is made to the input unit, a control signal corresponding to the input is generated and output to the control circuit 15. The control circuit 15 performs arithmetic processing and control corresponding to the control signal.
- the communication terminal is for connecting the electronic device 10 and an external device using a cable. By connecting, it is possible to transmit and receive data between the electronic device 10 and the external device.
- External devices include personal computers, printers, smartphones, tablet terminals, storage devices such as hard disk drives and USB (Universal Serial Bus) memories, and display devices such as televisions and projectors.
- Examples of communication standards include USB, LAN (Local Area Network), and HDMI (High-Definition Multimedia Interface) (registered trademark).
- Wi-Fi Wi-Fi
- wireless LAN ZigBee
- Bluetooth registered trademark
- the electronic device 10 is configured as described above.
- Examples of the organic latent heat storage material used for the first heat storage material 18a and the second heat storage material 18b include paraffin (n-nonadecane, n-icosane, n-henicosane, n-docosane, n-tricosane, n- Tetracosane, n-pentacosane, n-hexacosane, n-heptacosane, n-octacosane, n-nonacosan, n-triacontane, n-hentriacontane, n-dotriacontane, n-tritriacontane, paraffin wax, etc.) Fatty acid or fatty acid ester (capric acid, undecylic acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, margaric acid, stearic acid, nona
- threitol and the like are usable.
- polyethylene, tetradecanol, dodecanol, polyglycol, naphthalene, propionamide, acetamide, biphenyl, dimethyl sulfoxide, trimethylolethane hydrate, side chain crystalline polymer, organometallic complex, etc. are used. Also good. Further, a mixture or a eutectic of two or more of these organic materials may be used, and one or more of these materials as a main component and further other subcomponents (benzoic acid, urea, water) Etc.) may be used.
- Examples of inorganic hydrate-based latent heat storage materials include sodium acetate hydrate, potassium acetate hydrate, sodium hydroxide hydrate, potassium hydroxide hydrate, strontium hydroxide hydrate, and barium hydroxide. Hydrate, Sodium chloride hydrate, Magnesium chloride hydrate, Potassium chloride hydrate, Calcium chloride hydrate, Zinc chloride hydrate, Lithium nitrate hydrate, Magnesium nitrate hydrate, Calcium nitrate hydrate , Aluminum nitrate hydrate, Cadmium nitrate, Iron nitrate hydrate, Zinc nitrate hydrate, Manganese nitrate hydrate, Lithium sulfate hydrate, Sodium sulfate hydrate, Magnesium sulfate hydrate, Calcium sulfate water Japanese, potassium aluminum sulfate hydrate, aluminum ammonium sulfate hydrate, sodium thiosulfate hydrate, potassium phosphate hydrate,
- a mixture or eutectic of two or more materials among these inorganic hydrated salt materials may be used, or one or more of these materials as a main component and further subcomponents (urea, ammonium). You may use the mixture which added salt, water, etc.).
- the organic-based latent heat storage material and the inorganic hydrate-based latent heat storage material described above both involve a solid-liquid phase change and liquefy at a temperature higher than the phase change temperature
- the first heat storage material 18a and the second heat storage material 18b A container is required for use. That is, when these heat storage materials are mixed with resin or metal, it is necessary to put these substances into a container such as a microcapsule to make it apparently solid. Therefore, the organic material-based latent heat storage material and the inorganic hydrate-based latent heat storage material described above can be combined with a resin or metal by encapsulating them in microcapsules (made of resin, inorganic glass, or the like).
- the solid phase transition heat storage material examples include an electronic phase transition heat storage material (for example, VO 2 , vanadium oxide in which VO 2 is doped with any of W, Re, Mo, Ru, Nb, Ta, etc., LiMn 2 O 4. , LiVS 2 , LiVO 2 , NaNiO 2 , REBaFe 2 O 5 , REBaCo 2 O 5.5 where “RE is a rare earth element such as Y, Sm, Pr, Eu, Gd, Dy, Ho, Tb”
- a mixture of two or more of these materials may be used, or a mixture of one or more of these materials as a main component and further added with other subcomponents may be used.
- Thermochromic materials N, N-diethylethylenediamine copper complex, etc.
- plastic crystals trimethylolethane, pentaerythritol, neopentyl glycol, etc.
- the latent heat storage material is not limited to these, You may use another latent heat storage material.
- both the insulating and non-insulating materials can be used as the first heat storage material 18a and the second heat storage material 18b. If the heat storage material is conductive and it may contact a metal part such as the control circuit 15 and cause a short circuit, the first heat storage material 18a and the heat storage material 18a and the like may be coated by coating the control circuit 15 etc. with a thin insulating material.
- the second heat storage material 18b can be configured.
- FIG. 3 is a graph showing a temperature change of the battery 16 included in the electronic device 10.
- a heat storage material is not provided in the casing 11 of the electronic device 100, an aluminum sheet metal 101 (not including VO 2 ) is provided so as to be in contact with the control circuit 15, and a battery case 102 is constituted by ABS.
- a 1 mm gap 103 was provided between the aluminum sheet metal 101 and the battery case 102.
- Other configurations of the electronic device 100 are the same as those in the first embodiment described above.
- a heat storage material 201 (VO 2 / ABS (33 vol% / 67 vol%) composite material) is provided between the control circuit 15 and the battery 16 without providing a gap in the housing 11 of the electronic device 200. It was.
- the heat storage material 201 also functions as a battery case.
- Other configurations of the electronic device 200 are the same as those in the first embodiment described above.
- the first heat storage material 18a is provided so as to be thermally connected to the control circuit 15 via the heat dissipation sheet 17, and the second heat storage material 18b is connected to the battery. 16 so as to be in contact with 16.
- a 0.7 mm gap 19 was provided between the first heat storage material 18a and the second heat storage material 18b.
- the latent heat storage density of this example was 80 J / cc, and the thermal conductivity was 0.9 W / m ⁇ K.
- the temperature rise of the battery 16 is suppressed, and the time until the temperature reaches a limit temperature that is a limit for limiting the operation of the battery 16 is about 5 times. It was extended by 7%.
- the effects of improving the impact resistance (fastness) and the drip-proof property (waterproofness) of the electronic device 10 are also achieved. be able to.
- Second Embodiment> [2-1. Configuration of electronic equipment] With reference to FIG. 5, a configuration example of the electronic device 20 according to the second embodiment of the present technology will be described. Since the configuration of the electronic device 20 other than the first heat storage material 18a is the same as that of the first embodiment, the description thereof is omitted. In the second embodiment as well, the image pickup apparatus will be described as an example of the electronic device 20 as in the first embodiment.
- a plurality of concavo-convex surfaces 21 are formed on the entire surface of the first heat storage material 18 a opposite to the surface on the control circuit 15 side, that is, the surface in contact with the gap 19.
- the uneven surface 21 is for increasing the surface area of the surface of the first heat storage material 18a on the gap 19 side.
- the uneven surface 21 is an example of the “shape that increases the surface area” in the claims.
- the temperature rise of the battery 16 can be more efficiently suppressed, the usable time such as the recording time is extended, the function limitation (thermal shutdown) due to the temperature rise is prevented, the user discomfort is reduced, the device Reliability can be improved and the life of the equipment can be extended.
- the heat storage material 31 is provided so as to be thermally connected to the control circuit 15 via the heat dissipation sheet 17.
- no heat storage material is provided so as to contact the battery 16, and the heat storage material 31 is not in contact with the battery 16, and a gap 32 is formed between the heat storage material 31 and the battery 16.
- the battery 16 and the gap 32 are configured to be in direct contact with each other.
- the heat generated from the control circuit 15 is stored in the heat storage material 31, and the heat is prevented from moving to the battery 16 by the air gap 32, thereby suppressing the temperature rise of the battery 16. it can.
- This will extend the usable time such as recording time, prevent function restriction (thermal shutdown) due to temperature rise, reduce user discomfort, improve device reliability, extend device life, etc. Can do.
- the first to third embodiments of the present technology are configured.
- the heat storage material may not be directly thermally connected to the control circuit 15 but may be thermally connected to a unit having a base on which the control circuit 15 is mounted. Further, the heat storage material may be thermally connected to a battery case in which the battery 16 is disposed.
- the second heat storage material 18b functions as a battery case, but the second heat storage material 18b does not necessarily function as a battery case.
- the second heat storage material 18b may be provided so as to be in direct contact with the battery 16 or thermally connected to the battery case, not as a battery case.
- the first heat storage material 18 a may be in direct physical contact with the control circuit 15 without providing the heat dissipation sheet 17.
- the air gap 19 may have a substantially linear shape or a curved shape extending obliquely between the control circuit 15 and the battery 16 in addition to a substantially straight shape extending substantially perpendicular to the direction in which the control circuit 15 and the battery 16 are arranged.
- the first heat storage material 18a and the second heat storage material 18b, in the housing 11 instead of providing two heat storage materials, the first heat storage material 18a and the second heat storage material 18b, in the housing 11, a single heat storage material is provided. You may make it provide the space
- not only the first heat storage material 18a but also the surface on the air gap side of the second heat storage material 18b may be provided with an uneven shape as a shape that increases the surface area.
- the shape that increases the surface area is not limited to the uneven shape described above, but can increase the surface area of the heat storage material, such as a shape provided with a large number of holes or a shape provided with grooves in a lattice shape. Any shape may be used as long as it has a shape.
- the present technology is effective not only for the image sensor 14, the control circuit 15, and the battery 16 described above in the embodiment, but also for any heat source as long as it generates heat in the electronic device.
- Electronic devices related to this technology include small digital video cameras, digital cameras, television receivers, notebook computers, smartphones, tablet terminals, and portable game machines that are used by outdoor sports enthusiasts to record their activities. Any device having an image sensor such as a wristwatch-type wearable terminal, a glasses-type wearable terminal, a car navigation system, an intercom system, a robot, or a robot cleaner can be applied.
- an image sensor such as a wristwatch-type wearable terminal, a glasses-type wearable terminal, a car navigation system, an intercom system, a robot, or a robot cleaner can be applied.
- the present technology can also have the following configurations.
- the electronic apparatus according to (1) wherein the heat storage material is provided so as to be thermally connected to the control circuit and the battery.
- the heat storage material is provided so as to be thermally connected to at least a surface of the control circuit facing the battery and a surface of the battery facing the control circuit (1) or (2).
- the electronic device as described in.
- the shape which increases the said surface area is an electronic device as described in (4) currently formed in the surface by the side of the said control circuit among the surfaces which contact
- the heat storage material is A first heat storage material thermally connected to the control circuit; The electronic device according to any one of (1) to (5), including a second heat storage material that is thermally connected to the battery.
- the electronic device according to (1) wherein the air gap is in contact with the heat storage material on the control circuit side and in contact with the battery on the battery side.
- the said heat storage material is an electronic device in any one of (1) to (9) comprised by the latent heat storage material.
- the said heat storage material is an electronic device in any one of (1) to (10) comprised by the composite material of heat storage material and resin.
- the said heat storage material is an electronic device in any one of (1) to (10) comprised by the heat storage material and the composite material of a metal.
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Abstract
Description
<1.第1の実施の形態>
[1-1.電子機器の構成]
[1-2.蓄熱材による効果]
<2.第2の実施の形態>
[2-1.電子機器の構成]
<3.第3の実施の形態>
[3-1.電子機器の構成]
<4.変形例>
[1-1.電子機器の構成]
まず、第1の実施の形態に係る電子機器10である撮像装置の一構成例について説明する。図1は、電子機器10の構成を示す平面視概略断面図である。
次に、上述した第1蓄熱材18aおよび第2蓄熱材18bによる電子機器10の温度上昇抑制効果について説明する。図3は電子機器10が備えるバッテリー16の温度変化を示すグラフである。
図4Aに示すように、電子機器100の筐体11内に蓄熱材を設けず、制御回路15に接するようにアルミニウム板金101(VO2を含まない)を設け、ABSでバッテリーケース102を構成し、アルミニウム板金101とバッテリーケース102の間に1mmの空隙103を設けた。電子機器100のこれら以外の構成は上述した第1の実施の形態におけるものと同様である。
図4Bに示すように、電子機器200の筐体11内に空隙を設けずに制御回路15とバッテリー16の間に蓄熱材201(VO2/ABS(33vol%/67vol%)複合材料)を設けた。蓄熱材201はバッテリーケースとしても機能している。電子機器200のこれら以外の構成は上述した第1の実施の形態におけるものと同様である。
図1を参照して説明した第1の実施の形態と同様に、第1蓄熱材18aを放熱シート17を介して制御回路15に熱的に接続するように設け、第2蓄熱材18bをバッテリー16に接するように設けた。また、第1蓄熱材18aと第2蓄熱材18b間に0.7mmの空隙19を設けた。第1蓄熱材18a、第2蓄熱材18b共にVO2/ABS(33vol%/67vol%)複合材料を用いた。本実施例の潜熱蓄熱密度は80J/cc、熱伝導率は0.9W/m・Kであった。
図3のグラフ中実線で示す実施例は一点鎖線で示す比較例1と比べて、バッテリー16の温度上昇が抑制され、バッテリー16の動作が制限される限界である制限温度に達するまでの時間が約27%延長した。
[2-1.電子機器の構成]
図5を参照して、本技術の第2の実施の形態に係る電子機器20の一構成例について説明する。なお、電子機器20の第1蓄熱材18a以外の構成は第1の実施の形態と同様であるため、その説明を省略する。第2の実施の形態においても第1の実施の形態と同様に撮像装置を電子機器20の例として説明を行なう。
[3-1.電子機器の構成]
図6を参照して、本技術の第3の実施の形態に係る電子機器30の一構成例について説明する。なお、電子機器30の蓄熱材31と空隙32以外の構成は第1の実施の形態と同様であるため、その説明を省略する。第3の実施の形態においても第1の実施の形態と同様に撮像装置を電子機器30の例として説明を行なう。
以上、本技術の実施の形態について具体的に説明したが、本技術は上述の実施の形態に限定されるものではなく、本技術の技術的思想に基づく各種の変形が可能である。
(1)
筐体と、
前記筐体内に設けられた制御回路と、
前記筐体内に設けられたバッテリーと、
前記筐体内において、前記制御回路と前記バッテリーの間に設けられた蓄熱材と、
前記制御回路と前記バッテリーとの間に設けられた空隙と
を備える電子機器。
(2)
前記蓄熱材は、前記制御回路および前記バッテリーに熱的に接続するように設けられている
(1)に記載の電子機器。
(3)
前記蓄熱材は、少なくとも前記制御回路の前記バッテリーに対向する側の面および前記バッテリーの前記制御回路に対向する側の面に熱的に接続するように設けられている
(1)または(2)に記載の電子機器。
(4)
前記蓄熱材の前記空隙に接する面に表面積を増加させる形状が形成されている
(1)から(3)のいずれかに記載の電子機器。
(5)
前記表面積を増加させる形状は、前記蓄熱材の前記空隙に接する面のうち、少なくとも前記制御回路側の面に形成されている
(4)に記載の電子機器。
(6)
前記蓄熱材は、
前記制御回路に熱的に接続する第1蓄熱材と、
前記バッテリーに熱的に接続する第2蓄熱材と
から構成されている
(1)から(5)のいずれかに記載の電子機器。
(7)
前記第1蓄熱材は、潜熱蓄熱材料により構成され、転移温度が約50度以上80度以下である
(6)に記載の電子機器。
(8)
前記第2蓄熱材は、潜熱蓄熱材料により構成され、転移温度が約40度以上70度以下である
(6)に記載の電子機器。
(9)
前記空隙は、前記制御回路側においては前記蓄熱材と接しており、前記バッテリー側においては前記バッテリーに接している
(1)に記載の電子機器。
(10)
前記蓄熱材は潜熱蓄熱材料により構成されている
(1)から(9)のいずれかに記載の電子機器。
(11)
前記蓄熱材は、蓄熱材料と樹脂の複合材料により構成されている
(1)から(10)のいずれかに記載の電子機器。
(12)
前記蓄熱材は、蓄熱材料と金属の複合材料により構成されている
(1)から(10)のいずれかに記載の電子機器。
11・・・・・・・・・筐体
15・・・・・・・・・制御回路
16・・・・・・・・・バッテリー
18a・・・・・・・・第1蓄熱材
18b・・・・・・・・第2蓄熱材
19、32・・・・・・空隙
21・・・・・・・・・凹凸面
31・・・・・・・・・蓄熱材
Claims (12)
- 筐体と、
前記筐体内に設けられた制御回路と、
前記筐体内に設けられたバッテリーと、
前記筐体内において、前記制御回路と前記バッテリーの間に設けられた蓄熱材と、
前記制御回路と前記バッテリーとの間に設けられた空隙と
を備える電子機器。 - 前記蓄熱材は、前記制御回路および前記バッテリーに熱的に接続するように設けられている
請求項1に記載の電子機器。 - 前記蓄熱材は、少なくとも前記制御回路の前記バッテリーに対向する側の面および前記バッテリーの前記制御回路に対向する側の面に熱的に接続するように設けられている
請求項2に記載の電子機器。 - 前記蓄熱材の前記空隙に接する面に表面積を増加させる形状が形成されている
請求項1に記載の電子機器。 - 前記表面積を増加させる形状は、前記蓄熱材の前記空隙に接する面のうち、少なくとも前記制御回路側の面に形成されている
請求項4に記載の電子機器。 - 前記蓄熱材は、
前記制御回路に熱的に接続する第1蓄熱材と、
前記バッテリーに熱的に接続する第2蓄熱材と
から構成されている
請求項1に記載の電子機器。 - 前記第1蓄熱材は、潜熱蓄熱材料により構成され、転移温度が約50度以上80度以下である
請求項6に記載の電子機器。 - 前記第2蓄熱材は、潜熱蓄熱材料により構成され、転移温度が約40度以上70度以下である
請求項6に記載の電子機器。 - 前記空隙は、前記制御回路側においては前記蓄熱材と接しており、前記バッテリー側においては前記バッテリーに接している
請求項1に記載の電子機器。 - 前記蓄熱材は潜熱蓄熱材料により構成されている
請求項1に記載の電子機器。 - 前記蓄熱材は、蓄熱材料と樹脂の複合材料により構成されている
請求項1に記載の電子機器。 - 前記蓄熱材は、蓄熱材料と金属の複合材料により構成されている
請求項1に記載の電子機器。
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CN201680064404.4A CN108353519B (zh) | 2015-11-10 | 2016-10-04 | 电子设备 |
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US20180316837A1 (en) | 2018-11-01 |
CN108353519B (zh) | 2020-11-24 |
US10560615B2 (en) | 2020-02-11 |
JPWO2017081833A1 (ja) | 2018-08-30 |
JP6834975B2 (ja) | 2021-02-24 |
CN108353519A (zh) | 2018-07-31 |
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