JP2004303536A - Electronic equipment - Google Patents

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Publication number
JP2004303536A
JP2004303536A JP2003093996A JP2003093996A JP2004303536A JP 2004303536 A JP2004303536 A JP 2004303536A JP 2003093996 A JP2003093996 A JP 2003093996A JP 2003093996 A JP2003093996 A JP 2003093996A JP 2004303536 A JP2004303536 A JP 2004303536A
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Prior art keywords
fuel cell
heat
electronic component
electronic device
electronic
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JP2003093996A
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Japanese (ja)
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JP3910553B2 (en
Inventor
Hideo Iwasaki
秀夫 岩崎
Katsumi Kuno
勝美 久野
Tomonao Takamatsu
伴直 高松
Hidekazu Sakagami
英一 坂上
Nobutaka Kikuiri
信孝 菊入
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Toshiba Corp
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Toshiba Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment capable of heating a fuel cell with the use of heat of heat-generating components and maintaining the electronic components and the fuel cell in a proper operating temperature when the fuel cell generates heat. <P>SOLUTION: The electronic equipment, provided with the heat-generating electronic components 7 and the fuel cell 17 as a power source, is also provided with a heat transfer means 9 transferring heat by heat generation of the electronic components to the fuel cell 17, and a heat radiation part 13 attached to the heat transfer means 9 for dissipating excess heat by the heat generation of the fuel cell 17. It is so constructed that an airstream channel guiding a part of cooling air sent from a blower means 19 for sending cooling air to the heat radiating part 13 to an air-in-flow hole of the fuel cell 17 is provided, and an exit 31 of an exhaust channel 29 of the fuel cell 17 is arranged at a distribution channel for the air sent from the blower means 19 and flowing out of the heat radiation part 13. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、例えばCPU等のごとく発熱する電子部品を備えると共に、電源として燃料電池を備えた電子機器に係り、さらに詳細には、前記電子部品の発熱を燃料電池の加熱に利用可能の電子機器に関する。
【0002】
【従来の技術】
従来、例えばノートPC,PDA(携帯情報端末)、携帯電話等のごとき電子機器における電源としては二次電池が主流である。この種の電子機器においては長期間使用の要望等から燃料電池による電源の開発が進められている。上記燃料電池として、常温付近で動作可能な直接メタノール型燃料電池(DMFC)が注目されている。上記DMFCは、燃料としてメタノール水溶液を燃料極に直接供給するタイプの燃料電池である。
【0003】
上記DMFCが燃料電池として適正に動作する温度範囲は大略50℃〜80℃である。したがって、外気温が低い場合には、特に始動時には補助的に設けられたヒーター等によって適正温度に加熱する必要がある。
【0004】
そこで、電子機器に備えた例えばCPU等のごとく発熱する電子部品の発熱を利用して燃料電池の加熱を行う構成が開発されている(例えば特許文献1参照)。
【0005】
【特許文献1】
特開2002−231290号公報
【0006】
【発明が解決しようとする課題】
前記特許文献に記載の構成においては、電子部品の発熱を伝熱手段を介して燃料電池に伝熱し、始動初期に燃料電池を加熱することができる。しかし、燃料電池は動作を開始すると燃料電池自身が発熱するので、前記電子部品及び燃料電池が適正温度を越えて高温になり、動作不良や熱暴走を生じる危険がある。
【0007】
【課題を解決するための手段】
本発明は、前述のごとき従来の問題に鑑みてなされたもので、電子部品と、燃料電池と、前記電子部品及び前記燃料電池に熱的に接続された伝熱手段と、この伝熱手段に熱的に接続された放熱部とを備えた電子機器である。
【0008】
また、本発明は、上記電子機器において、前記伝熱手段は、前記電子部品の発熱による熱を前記燃料電池へ伝熱するとともに、前記電子部品の発熱による熱及び前記燃料電池の発熱による熱を前記放熱部に伝熱するようにした構成である。
【0009】
また、本発明は、上記電子機器において、前記放熱部へ冷却空気を送風するための送風手段を備え、前記送風手段から送風された冷却空気の少なくとも一部を前記燃料電池の空気流入口に導く導風流路を備えた構成である。
【0010】
また、本発明は、上記電子機器において、前記放熱部へ冷却空気を送風するための送風手段を備え、前記送風手段から送風されて前記放熱部から流出する空気流通路に、前記燃料電池の排気通路の出口を配置した構成である。
【0011】
また、本発明は、上記電子機器において、前記送風手段から送風された冷却空気の少なくとも一部を前記燃料電池の空気流入口に導く導風流路を備えた構成である。
【0012】
また、本発明は、電子部品と、燃料電池と、前記電子部品及び前記燃料電池の発熱による熱を放熱するための放熱部と、前記電子部品、前記燃料電池、及び前記放熱部を循環する流体冷媒が流れる冷却流路と、前記流体冷媒を流動するためのポンプ手段とを備えた構成である。
【0013】
また、本発明は、上記電子機器において、前記燃料電池の外囲器を貫通して外部に突出した電極を前記伝熱手段に熱的に接続した構成である。
【0014】
【発明の実施の形態】
図1、図2及び図3を参照するに、本発明の第1の実施形態に係る電子機器1は、箱状の筐体3を備えており、この筐体3内に備えた基板5には、例えばCPU等のごとき発熱する電子部品7が装着してある。そして、上記電子部品7には、当該電子部品7を適正に冷却するために、伝熱手段の一例としてのヒートシンク9が熱的に接続してある。
【0015】
前記ヒートシンク9は板状のベース部11を備えると共に放熱部13の例として複数の冷却フィン15を平行に備えた構成である。上記冷却フィン15は放熱のための伝熱面積を大きくするためのものであって、例えば円柱形状など種々の形状を採用することができるものである。
【0016】
前記ヒートシンク9における前記ベース部11は前記冷却フィン15の長手方向に対して直交する方向に延伸した延伸部11Aを一体に備えており、この延伸部11Aには燃料電池17が熱的に接続して装着してある。したがって、前記電子部品7の発熱による熱をヒートシンク9のベース部11を介して前記燃料電池17へ伝熱し、燃料電池17を加熱することができる。
【0017】
なお、伝熱をより効果的に行うために、前記電子部品7とヒートシンク9の前記ベース部11との間及び前記ベース11と燃料電池17との間の熱的接続部に、高熱伝導性のグリスやフェーズチェンジと称される熱接続材を塗布することや、柔軟性を有するシート状のサーマルコンパウンドを挟み込むことが望ましいものである。また、前記ヒートシンク9のベース部11と前記電子部品7、燃料電池17との間にヒートパイプや高熱伝導部材等を介在した構成とすることも可能である。
【0018】
既に理解されるように、初期において、電子機器1に内装した電池により電子部品7を動作し、当該電子部品7が発熱したときの熱を、ヒートシンク9のベース部11を介して燃料電池17に伝熱し、燃料電池17を加熱することができる。したがって、初期においては前記燃料電池17を適正温度範囲に比較的短時間で加熱することができるものである。
【0019】
ところで、燃料電池17は動作を開始すると発熱するものである。したがって、燃料電池17を長時間使用する場合には、燃料電池17の温度上昇により適正な動作温度範囲を越える危険があり、また燃料電池17の熱がヒートシンク9のベース部11を介して前記電子部品7へ伝熱されて動作不良等を生じる虞がある。
【0020】
そこで、本例においては、前記放熱部13へ冷却空気を送風するための送風手段の一例として、前記筐体3内に冷却ファン19を備えている。この冷却ファン19は前記燃料電池17又は前記電子部品7の温度を監視し、前記燃料電池17又は電子部品7の温度が適正な動作温度範囲を越えたとき、前記放熱部13に対して冷風を供給する作用をなすものである。
【0021】
すなわち、前記冷却ファン19が駆動されると、前記筐体3に設けた外気流入口21から外気が吸引され、前記放熱部13方向へ送風される。そして、放熱部13において冷却フィン15に接触して冷却した後の空気は冷却フィン15に沿って流れて、筐体3に設けた流出口23から外部へ流出するものである。
【0022】
したがって、燃料電池17の発熱による過剰な熱は放熱部13から外部へ放熱されることとなり、前記電子部品7、燃料電池17の温度は適正な温度範囲に維持されるものであって、温度上昇による電子部品7の動作不良等を生じるようなことはないものである。
【0023】
前述の説明より理解されるように、ヒートシンク9は、初期においては電子部品7の発熱による熱を燃料電池17へ伝達する機能を奏し、燃料電池17の動作後においては、電子部品7と燃料電池17両方を適正な温度範囲に維持する冷却手段を兼ねる構成であるから、燃料電池17用の冷却手段を格別に設ける必要がなく、構成の簡素化を図ることができるものである。また、ヒートシンク9が電子部品7と燃料電池17との冷却手段を兼ねる構成であることにより、冷却ファン19は1台でもって電子部品7と燃料電池17との両方の温度制御を行う態様となり、全体的構成のコンパクト化がより向上するものである。
【0024】
図4は本発明の第2の実施形態を示すもので、この第2の実施形態においては、前記燃料電池17の空気流入口25に、送風手段としての前記冷却ファン19から送風される空気の一部を導くための導風流路27を設けたものである。
【0025】
上記構成によれば、燃料電池17に対して空気を供給するための専用の送風手段を省略することができ、より一層の簡素化を図ることができる。
【0026】
この際、前記燃料電池17へ供給される空気は電子部品等の適宜の発熱部品の冷却を行った後の空気であることが望ましい。
【0027】
図5は本発明の第3の実施形態を示すもので、この第3の実施形態においては、前記燃料電池17におけるアノード側及びカソード側の出口と連通した排気通路29の出口31を、前記放熱部13から出口23を経て筐体3の外部へ流出する空気流通路内に配置した構成であって、前記出口31は前記筐体3の外部へ指向してある。
【0028】
上記構成によれば、燃料電池17における発電の際の反応生成物としてのCO ,HOを、放熱部13を冷却した空気と共に筐体3の外部へ速やかに排出することができ、出口31付近での凝縮を効果的に防止することができるものである。
【0029】
ところで、前記放熱部13における冷却フィン15の間を流れる空気の流路の一部に空気の流速が速くなる絞り部分を形成し、この部分に前記出口31を臨ませた構成とすることも可能である。このような構成とすることにより、冷却フィン15の間隔を狭くした絞り部分に負圧を生じ、燃料電池17の出口31部分に吸引作用を生じて、前記反応生成物を吸引排出できるものである。
【0030】
また、前述した第2の実施形態と第3の実施形態とを組合せた構成とすることも可能である。この場合には、冷却ファン19によって送風される空気の一部を燃料電池17に対して供給し、かつ冷却ファン19からの冷却空気によって放熱部13の冷却を行った後の空気でもって、燃料電池17の出口31から反応生成物を筐体3の外部へ排出する構成となるものであって、空気の供給、反応生成物の排出を効率的に行い得るものである。
【0031】
図6は本発明の第4の実施形態を示すもので、この実施形態においては、燃料電池17における外囲器(ケーシング)33を貫通して外部に突出した電極35が前記ヒートシンク9の延伸部11Aに熱的に接続した構成である。より詳細には、前記燃料電池17の外囲器33内においては電解質膜37を間に挟み込んだ状態で電極としてのアノード39とカソード41が配置してある。そして、前記アノード39とカソード41が前記外囲器33から突出した部分においては、前記電解質膜37に替えて電気絶縁膜43が設けられ、前記アノード39,カソード41は電気絶縁膜43によって絶縁された状態にあり、この絶縁した状態でもって前記ヒートシンク9におけるベース11の延伸部11Aに熱的に接続してあるものである。
【0032】
上記構成によれば、燃料電池17におけるアノード39,カソード41に対して効果的に伝熱を行うことができ、初期においての触媒の活性を効率良く高めることができ、発電効率を向上することができるものである。
【0033】
図7は本発明の第5の実施形態を概念的、概略的に示すものである。すなわち、この実施形態においては、電子部品7の発熱による熱を燃料電池17へ伝熱するための冷媒が流れる冷媒流路45を備えてなる伝熱手段47を備え、この伝熱手段47に、前記冷媒を流動するためのポンプ手段49及び燃料電池17の発熱による過剰の熱を放熱するための放熱部51を備えた構成である。
【0034】
前記冷媒流路45は冷媒が循環するように環状に構成してあって、電子部品7の下流側に燃料電池17を配置し、この燃料電池17の下流側に放熱部51が配置してある。そして、冷媒流路45の適宜位置に前記ポンプ手段49が配置してある。
【0035】
ところで、例えばノートPC等のごとき電子機器において、発熱する電子部品7としての例えばCPUの動作温度は大略70℃〜90℃であり、冷媒としての液体冷媒で前記電子部品7の冷却を行う液体冷媒温度は大略40℃〜60℃で使用される。したがって、前記電子部品7の部分に流入する液体冷媒の温度は大略40℃であり、前記電子部品7の部分を通過したときには大略60℃に温度上昇した状態にある。
【0036】
よって、初期状態であって燃料電池17の温度が低く動作適正温度に達していない場合には、燃料電池17は大略60℃の前記液体冷媒によって加熱されるものであり、燃料電池17の動作適正温度への温度上昇を促進するものである。
【0037】
そして、前記燃料電池17が発電を開始して例えば80℃に上昇した場合には、この燃料電池17から大略60℃の前記液体冷媒への熱伝達が行われ、燃料電池17の冷却が行われるものである。すなわち、燃料電池17は適正温度に維持されることになる。
【0038】
上述のように燃料電池17を冷却することによってさらに高温になった液体冷媒は放熱部51において大略40℃に冷却され、ポンプ49によって冷媒流路47内を循環するものである。
【0039】
既に理解されるように、上記構成によれば、初期においては電子部品7の発熱を利用して燃料電池17を加熱することができ、燃料電池17自体の発熱による過剰な熱は放熱部51において放熱され、電子部品7及び燃料電池17を動作適正温度に維持することができるものである。すなわち、伝熱手段47は、発熱部品7の発熱による熱を燃料電池17へ伝達する機能を奏すると共に電子部品7と燃料電池17とを適正温度に冷却する冷却手段を兼ねるものであり、前記第1の実施形態と同様の効果を奏するものである。
【0040】
【発明の効果】
以上のごとき説明より理解されるように、本発明によれば、電子機器において発熱する電子部品の発熱を利用して燃料電池を加熱することができ、燃料電池自体が発熱したときには過剰な熱を放熱部でもって放熱でき、前記電子部品及び燃料電池を動作適正温度に維持することができるものである。
【図面の簡単な説明】
【図1】本発明の第1の実施形態に係る主要部を概略的、概念的に示した平面説明図である。
【図2】図1における II− II線に沿った断面説明図である。
【図3】図1における III− III線に沿った断面説明図である。
【図4】本発明の第2の実施形態に係る主要部を概略的、概念的に示した平面説明図である。
【図5】本発明の第3の実施形態に係る主要部を概略的、概念的に示した平面説明図である。
【図6】本発明の第4の実施形態に係る主要部分を概略的、概念的に示した説明図である。
【図7】本発明の第5の実施形態に係る主要部分を概略的、概念的に示した説明図である。
【符号の説明】
1…電子機器
3…筐体
7…電子部品
9…ヒートシンク(伝熱手段)
11…ベース部
11A…延伸部
13…放熱部
15…冷却フィン
17…燃料電池
19…冷却ファン
25…空気流入口
27…導風流路
29…排気通路
31…出口
35…電極
45…冷媒流路
47…伝熱手段
49…ポンプ手段
51…放熱部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic device having an electronic component that generates heat, such as a CPU, and a fuel cell as a power supply, and more particularly, to an electronic device that can use the heat generated by the electronic component to heat the fuel cell. About.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a power source for electronic devices such as notebook PCs, PDAs (portable information terminals), and mobile phones, secondary batteries have been mainstream. In this type of electronic equipment, the development of a power supply using a fuel cell has been promoted due to a demand for long-term use. As the above-mentioned fuel cell, a direct methanol fuel cell (DMFC) operable at around normal temperature has been receiving attention. The DMFC is a fuel cell of a type in which an aqueous methanol solution is directly supplied to a fuel electrode as fuel.
[0003]
The temperature range in which the DMFC operates properly as a fuel cell is approximately 50 ° C to 80 ° C. Therefore, when the outside air temperature is low, it is necessary to heat to an appropriate temperature by an auxiliary heater provided especially at the time of starting.
[0004]
Therefore, a configuration has been developed in which heating of a fuel cell is performed using heat generated by an electronic component such as a CPU provided in an electronic device, which generates heat (for example, see Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2002-231290
[Problems to be solved by the invention]
In the configuration described in the above-mentioned patent document, the heat generated by the electronic components is transferred to the fuel cell via the heat transfer means, and the fuel cell can be heated in the initial stage of startup. However, when the fuel cell starts operating, the fuel cell itself generates heat, so that the temperature of the electronic components and the fuel cell becomes higher than an appropriate temperature, and there is a risk of malfunction and thermal runaway.
[0007]
[Means for Solving the Problems]
The present invention has been made in view of the conventional problems as described above, and includes an electronic component, a fuel cell, a heat transfer device thermally connected to the electronic component and the fuel cell, and a heat transfer device. It is an electronic device including a heat radiating unit that is thermally connected.
[0008]
Further, according to the invention, in the electronic device, the heat transfer unit transfers heat generated by the electronic component to the fuel cell, and generates heat generated by the electronic component and heat generated by the fuel cell. The heat transfer unit is configured to transfer heat.
[0009]
Further, according to the present invention, in the electronic device described above, the electronic device further includes a blower for blowing cooling air to the radiator, and guides at least a part of the cooling air blown from the blower to an air inlet of the fuel cell. This is a configuration including a wind guide channel.
[0010]
Further, according to the present invention, in the electronic device described above, the electronic device further includes a blowing unit configured to blow cooling air to the heat radiating unit. This is a configuration in which the exit of the passage is arranged.
[0011]
Further, according to the present invention, in the electronic device described above, a configuration is provided in which an air guide channel for guiding at least a part of the cooling air blown from the blower to an air inlet of the fuel cell is provided.
[0012]
The present invention also provides an electronic component, a fuel cell, a radiator for radiating heat generated by heat of the electronic component and the fuel cell, and a fluid circulating through the electronic component, the fuel cell, and the radiator. The configuration includes a cooling channel through which a refrigerant flows, and pump means for flowing the fluid refrigerant.
[0013]
Further, according to the present invention, in the above electronic device, an electrode protruding to the outside through an envelope of the fuel cell is thermally connected to the heat transfer means.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Referring to FIG. 1, FIG. 2 and FIG. 3, an electronic apparatus 1 according to a first embodiment of the present invention includes a box-shaped housing 3, and a board 5 provided in the housing 3 Is mounted with an electronic component 7 that generates heat, such as a CPU. A heat sink 9 as an example of a heat transfer means is thermally connected to the electronic component 7 in order to cool the electronic component 7 properly.
[0015]
The heat sink 9 has a plate-like base portion 11 and a plurality of cooling fins 15 in parallel as an example of the heat radiating portion 13. The cooling fins 15 are for increasing a heat transfer area for heat radiation, and may adopt various shapes such as a cylindrical shape.
[0016]
The base portion 11 of the heat sink 9 is integrally provided with an extension 11A extending in a direction perpendicular to the longitudinal direction of the cooling fins 15, and a fuel cell 17 is thermally connected to the extension 11A. It is attached. Accordingly, the heat generated by the electronic component 7 can be transferred to the fuel cell 17 via the base 11 of the heat sink 9 to heat the fuel cell 17.
[0017]
In order to conduct heat transfer more effectively, the thermal connection between the electronic component 7 and the base portion 11 of the heat sink 9 and the thermal connection between the base 11 and the fuel cell 17 have high thermal conductivity. It is desirable to apply a thermal connection material called grease or a phase change, and to sandwich a flexible sheet-like thermal compound. Further, it is also possible to adopt a configuration in which a heat pipe, a high heat conduction member, or the like is interposed between the base portion 11 of the heat sink 9 and the electronic components 7 and the fuel cell 17.
[0018]
As already understood, initially, the electronic component 7 is operated by the battery installed in the electronic device 1, and heat generated when the electronic component 7 generates heat is supplied to the fuel cell 17 via the base 11 of the heat sink 9. Heat can be transferred and the fuel cell 17 can be heated. Therefore, initially, the fuel cell 17 can be heated to an appropriate temperature range in a relatively short time.
[0019]
Incidentally, the fuel cell 17 generates heat when it starts operating. Therefore, when the fuel cell 17 is used for a long time, there is a danger that the temperature of the fuel cell 17 will exceed the proper operating temperature range due to a rise in the temperature of the fuel cell 17. There is a possibility that heat will be transferred to the component 7 and malfunction will occur.
[0020]
Therefore, in the present embodiment, a cooling fan 19 is provided in the housing 3 as an example of a blowing unit for blowing cooling air to the heat radiating unit 13. The cooling fan 19 monitors the temperature of the fuel cell 17 or the electronic component 7 and, when the temperature of the fuel cell 17 or the electronic component 7 exceeds an appropriate operating temperature range, blows cool air to the radiator 13. It acts to supply.
[0021]
That is, when the cooling fan 19 is driven, the outside air is sucked from the outside air inlet 21 provided in the housing 3 and is blown toward the heat radiating section 13. The air that has been cooled by contacting the cooling fins 15 in the heat radiating section 13 flows along the cooling fins 15 and flows out of the outlet 23 provided in the housing 3 to the outside.
[0022]
Therefore, excessive heat due to the heat generated by the fuel cell 17 is radiated to the outside from the heat radiating portion 13, and the temperatures of the electronic component 7 and the fuel cell 17 are maintained in appropriate temperature ranges. The operation of the electronic component 7 does not occur due to the above.
[0023]
As can be understood from the above description, the heat sink 9 has a function of transmitting heat generated by the electronic component 7 to the fuel cell 17 at the initial stage, and the electronic component 7 and the fuel cell 17 operate after the operation of the fuel cell 17. Since the cooling means for maintaining both of the fuel cells 17 in an appropriate temperature range also serves as a cooling means, it is not necessary to particularly provide a cooling means for the fuel cell 17, and the structure can be simplified. In addition, since the heat sink 9 is configured to also serve as a cooling unit for the electronic component 7 and the fuel cell 17, a single cooling fan 19 controls the temperature of both the electronic component 7 and the fuel cell 17. The overall structure can be made more compact.
[0024]
FIG. 4 shows a second embodiment of the present invention. In the second embodiment, the air blown from the cooling fan 19 as a blowing means is supplied to an air inlet 25 of the fuel cell 17. A wind guide channel 27 for guiding a part is provided.
[0025]
According to the above configuration, a dedicated blowing unit for supplying air to the fuel cell 17 can be omitted, and further simplification can be achieved.
[0026]
At this time, it is desirable that the air supplied to the fuel cell 17 be air after cooling of appropriate heat-generating components such as electronic components.
[0027]
FIG. 5 shows a third embodiment of the present invention. In the third embodiment, the outlet 31 of the exhaust passage 29 communicating with the outlets on the anode side and the cathode side of the fuel cell 17 is connected to the radiator. This is arranged in an air flow passage that flows from the portion 13 to the outside of the housing 3 through the outlet 23, and the outlet 31 is directed to the outside of the housing 3.
[0028]
According to the above configuration, CO 2 and H 2 O as reaction products at the time of power generation in the fuel cell 17 can be quickly discharged to the outside of the housing 3 together with the air that has cooled the radiator 13, and the outlet is provided. The condensation around 31 can be effectively prevented.
[0029]
By the way, it is also possible to form a throttle portion in which a flow speed of air is increased in a part of a flow path of the air flowing between the cooling fins 15 in the heat radiating portion 13 and face the outlet 31 to this portion. It is. With such a configuration, a negative pressure is generated in the narrowed portion where the space between the cooling fins 15 is narrowed, and a suction action is generated in the outlet 31 portion of the fuel cell 17 so that the reaction product can be suctioned and discharged. .
[0030]
Further, it is also possible to adopt a configuration in which the second embodiment and the third embodiment described above are combined. In this case, a part of the air blown by the cooling fan 19 is supplied to the fuel cell 17, and the air after cooling the radiator 13 by the cooling air from the cooling fan 19 is used. The configuration is such that the reaction products are discharged from the outlet 31 of the battery 17 to the outside of the housing 3, and the supply of air and the discharge of the reaction products can be performed efficiently.
[0031]
FIG. 6 shows a fourth embodiment of the present invention. In this embodiment, an electrode 35 penetrating through an envelope (casing) 33 of the fuel cell 17 and projecting to the outside is formed by extending the heat sink 9. This is a configuration thermally connected to 11A. More specifically, in the envelope 33 of the fuel cell 17, an anode 39 and a cathode 41 as electrodes are arranged with the electrolyte membrane 37 interposed therebetween. In the portion where the anode 39 and the cathode 41 protrude from the envelope 33, an electric insulating film 43 is provided instead of the electrolyte film 37, and the anode 39 and the cathode 41 are insulated by the electric insulating film 43. The heat sink 9 is thermally connected to the extension 11A of the base 11 in the heat sink 9 in this insulated state.
[0032]
According to the above configuration, heat transfer can be effectively performed to the anode 39 and the cathode 41 in the fuel cell 17, the activity of the catalyst in the initial stage can be efficiently increased, and the power generation efficiency can be improved. You can do it.
[0033]
FIG. 7 conceptually and schematically shows a fifth embodiment of the present invention. That is, in this embodiment, a heat transfer unit 47 including a refrigerant flow passage 45 through which a refrigerant for transferring heat generated by the heat generated by the electronic component 7 to the fuel cell 17 is provided. It is provided with a pump means 49 for flowing the refrigerant and a heat radiating portion 51 for radiating excessive heat due to heat generated by the fuel cell 17.
[0034]
The coolant channel 45 is formed in an annular shape so that the coolant circulates. The fuel cell 17 is arranged downstream of the electronic component 7, and the heat radiating section 51 is arranged downstream of the fuel cell 17. . The pump means 49 is disposed at an appropriate position in the coolant channel 45.
[0035]
Incidentally, in an electronic device such as a notebook PC, for example, the operating temperature of a CPU as the electronic component 7 that generates heat is approximately 70 ° C. to 90 ° C., and a liquid refrigerant that cools the electronic component 7 with a liquid refrigerant as a refrigerant The temperature is used at approximately 40 ° C to 60 ° C. Therefore, the temperature of the liquid refrigerant flowing into the electronic component 7 is approximately 40 ° C., and the temperature has risen to approximately 60 ° C. when passing through the electronic component 7.
[0036]
Therefore, in the initial state, when the temperature of the fuel cell 17 is low and has not reached the proper operation temperature, the fuel cell 17 is heated by the liquid refrigerant at approximately 60 ° C. It promotes temperature rise to temperature.
[0037]
When the fuel cell 17 starts power generation and rises to, for example, 80 ° C., heat is transferred from the fuel cell 17 to the liquid refrigerant at approximately 60 ° C., and the fuel cell 17 is cooled. Things. That is, the fuel cell 17 is maintained at an appropriate temperature.
[0038]
The liquid refrigerant, which has been heated to a higher temperature by cooling the fuel cell 17 as described above, is cooled to approximately 40 ° C. in the radiator 51, and is circulated in the refrigerant channel 47 by the pump 49.
[0039]
As already understood, according to the above configuration, the fuel cell 17 can be initially heated by utilizing the heat generated by the electronic component 7, and excessive heat generated by the heat generated by the fuel cell 17 itself is generated by the heat radiating portion 51. The heat is dissipated, and the electronic component 7 and the fuel cell 17 can be maintained at the proper operation temperature. That is, the heat transfer means 47 has a function of transmitting heat generated by the heat of the heat generating component 7 to the fuel cell 17 and also serves as a cooling means for cooling the electronic component 7 and the fuel cell 17 to an appropriate temperature. This has the same effect as the first embodiment.
[0040]
【The invention's effect】
As understood from the above description, according to the present invention, the fuel cell can be heated by utilizing the heat generated by the electronic components that generate heat in the electronic device, and excessive heat is generated when the fuel cell itself generates heat. The heat can be dissipated by the heat dissipating portion, and the electronic component and the fuel cell can be maintained at an appropriate operating temperature.
[Brief description of the drawings]
FIG. 1 is an explanatory plan view schematically and conceptually showing a main part according to a first embodiment of the present invention.
FIG. 2 is an explanatory sectional view taken along line II-II in FIG.
FIG. 3 is an explanatory sectional view taken along line III-III in FIG. 1;
FIG. 4 is an explanatory plan view schematically and conceptually showing a main part according to a second embodiment of the present invention.
FIG. 5 is an explanatory plan view schematically and conceptually showing a main part according to a third embodiment of the present invention.
FIG. 6 is an explanatory diagram schematically and conceptually showing a main part according to a fourth embodiment of the present invention.
FIG. 7 is an explanatory diagram schematically and conceptually showing a main part according to a fifth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electronic equipment 3 ... Case 7 ... Electronic component 9 ... Heat sink (heat transfer means)
DESCRIPTION OF SYMBOLS 11 ... Base part 11A ... Extension part 13 ... Heat radiating part 15 ... Cooling fin 17 ... Fuel cell 19 ... Cooling fan 25 ... Air inlet 27 ... Breeze passage 29 ... Exhaust passage 31 ... Outlet 35 ... Electrode 45 ... Coolant passage 47 ... heat transfer means 49 ... pump means 51 ... radiator

Claims (7)

電子部品と、燃料電池と、前記電子部品及び前記燃料電池に熱的に接続された伝熱手段と、この伝熱手段に熱的に接続された放熱部とを備ええたことを特徴とする電子機器。An electronic device comprising: an electronic component; a fuel cell; heat transfer means thermally connected to the electronic component and the fuel cell; and a radiator thermally connected to the heat transfer means. machine. 請求項1記載の電子機器において、前記伝熱手段は、前記電子部品の発熱による熱を前記燃料電池へ伝熱するとともに、前記電子部品の発熱による熱及び前記燃料電池の発熱による熱を前記放熱部に伝熱するようにしたことを特徴とする電子機器。2. The electronic device according to claim 1, wherein the heat transfer unit transfers heat generated by the electronic component to the fuel cell, and dissipates heat generated by the electronic component and heat generated by the fuel cell. 3. Electronic equipment characterized in that heat is transferred to a part. 請求項1に記載の電子機器において、前記放熱部へ冷却空気を送風するための送風手段を備え、前記送風手段から送風された冷却空気の少なくとも一部を前記燃料電池の空気流入口に導く導風流路を備えたことを特徴とする電子機器。The electronic device according to claim 1, further comprising: a blowing unit configured to blow cooling air to the heat radiation unit, wherein at least a part of the cooling air blown from the blowing unit is led to an air inlet of the fuel cell. An electronic device comprising a wind channel. 請求項1に記載の電子機器において、前記放熱部へ冷却空気を送風するための送風手段を備え、前記送風手段から送風されて前記放熱部から流出する空気流通路に、前記燃料電池の排気通路の出口を配置したことを特徴とする電子機器。The electronic device according to claim 1, further comprising: a blowing unit configured to blow cooling air to the radiating unit, wherein an exhaust passage of the fuel cell is provided in an air flow passage that is blown from the blowing unit and flows out of the radiating unit. Electronic equipment characterized by having an exit of the device. 請求項3に記載の電子機器において、前記送風手段から送風された冷却空気の少なくとも一部を前記燃料電池の空気流入口に導く導風流路を備えたことを特徴とする電子機器。The electronic device according to claim 3, further comprising a wind guide channel that guides at least a part of the cooling air blown from the blower to an air inlet of the fuel cell. 電子部品と、燃料電池と、前記電子部品及び前記燃料電池の発熱による熱を放熱するための放熱部と、前記電子部品、前記燃料電池、及び前記放熱部を循環する流体冷媒が流れる冷却流路と、前記流体冷媒を流動するためのポンプ手段とを備えたことを特徴とする電子機器。An electronic component, a fuel cell, a radiator for radiating heat generated by the heat generated by the electronic component and the fuel cell, and a cooling channel through which a fluid refrigerant circulates through the electronic component, the fuel cell, and the radiator. An electronic device comprising: a pump unit for flowing the fluid refrigerant. 請求項1〜6のいずれかに記載の電子機器において、前記燃料電池の外囲器を貫通して外部に突出した電極を前記伝熱手段に熱的に接続してあることを特徴とする電子機器。The electronic device according to claim 1, wherein an electrode that penetrates through an envelope of the fuel cell and protrudes to the outside is thermally connected to the heat transfer unit. machine.
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Cited By (9)

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JP2006073392A (en) * 2004-09-03 2006-03-16 Honda Motor Co Ltd Fuel cell system
JP2006216326A (en) * 2005-02-02 2006-08-17 Mitsubishi Electric Corp Fuel cell apparatus
JP2007042362A (en) * 2005-08-02 2007-02-15 Nitto Denko Corp Fuel cell module and mobile apparatus
JP2007087701A (en) * 2005-09-21 2007-04-05 Nec Corp Electronic apparatus and starting method of fuel cell
JP2007115682A (en) * 2005-10-17 2007-05-10 Samsung Electro-Mechanics Co Ltd Electronic equipment having fuel cell
JP2008277169A (en) * 2007-04-27 2008-11-13 Toshiba Corp Electronic equipment system
US7846605B2 (en) 2005-03-07 2010-12-07 Samsung Sdi Co., Ltd. Pump having noise-proof and vibration-proof structure and fuel cell system using the same
JP2013101941A (en) * 2006-07-13 2013-05-23 Olympus Imaging Corp Electronic apparatus using fuel battery
JP2023525317A (en) * 2020-05-22 2023-06-15 アドベント・テクノロジーズ・インコーポレイテッド Method and Apparatus for Thermal Conditioning of High Temperature PEM Fuel Cell Stacks

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006073392A (en) * 2004-09-03 2006-03-16 Honda Motor Co Ltd Fuel cell system
JP4608271B2 (en) * 2004-09-03 2011-01-12 本田技研工業株式会社 Fuel cell system
JP2006216326A (en) * 2005-02-02 2006-08-17 Mitsubishi Electric Corp Fuel cell apparatus
US7846605B2 (en) 2005-03-07 2010-12-07 Samsung Sdi Co., Ltd. Pump having noise-proof and vibration-proof structure and fuel cell system using the same
JP2007042362A (en) * 2005-08-02 2007-02-15 Nitto Denko Corp Fuel cell module and mobile apparatus
JP2007087701A (en) * 2005-09-21 2007-04-05 Nec Corp Electronic apparatus and starting method of fuel cell
JP2007115682A (en) * 2005-10-17 2007-05-10 Samsung Electro-Mechanics Co Ltd Electronic equipment having fuel cell
US8043756B2 (en) 2005-10-17 2011-10-25 Samsung Electro-Mechanics Co., Ltd. Electronic apparatus having fuel cell
JP2013101941A (en) * 2006-07-13 2013-05-23 Olympus Imaging Corp Electronic apparatus using fuel battery
JP2008277169A (en) * 2007-04-27 2008-11-13 Toshiba Corp Electronic equipment system
JP2023525317A (en) * 2020-05-22 2023-06-15 アドベント・テクノロジーズ・インコーポレイテッド Method and Apparatus for Thermal Conditioning of High Temperature PEM Fuel Cell Stacks

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