JPS6273569A - Cooler for fuel cell - Google Patents

Cooler for fuel cell

Info

Publication number
JPS6273569A
JPS6273569A JP60212477A JP21247785A JPS6273569A JP S6273569 A JPS6273569 A JP S6273569A JP 60212477 A JP60212477 A JP 60212477A JP 21247785 A JP21247785 A JP 21247785A JP S6273569 A JPS6273569 A JP S6273569A
Authority
JP
Japan
Prior art keywords
pipe
cooling
cooling plate
corrosion
resistant steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP60212477A
Other languages
Japanese (ja)
Inventor
Iwao Umene
梅根　巖
Kenzo Ishii
石井　謙蔵
Seiichiro Ono
小野　征一郎
Kenichi Shirokura
健一 白倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP60212477A priority Critical patent/JPS6273569A/en
Publication of JPS6273569A publication Critical patent/JPS6273569A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
    • H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

PURPOSE:To prevent corrosion of a cooling pipe by forming a cooling pipe in embedded parts at the end of a cooling plate and projected parts from the cooling plate with a corrosion resistant steel pipe, and a cooling pipe in embed ded central parts connected to the embedded end parts through different material joints with a higher heat conductive pipe than the corrosion resistant steel pipe. CONSTITUTION:A cooling pipe 2 is formed in such a way that corrosion resistant pipes 3 and 4 are used in embedded parts at the end of a cooling plate and projected parts of the cooling plate, and a higher heat conductive pipe 6 than the corrosion resistant pipes 3, 4 is used in an embedded central part connected to the corrosion resistant pipes 3, 4 through different material joints 5. Thereby, since the end of cooling plate where electrolyte easily adheres or penetrates is formed with the corrosion resistant steel pipes 3,4 the corrosion of the cooling pipe 2 is prevented and reliability is also increased.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は燃料電池用冷却器に関するものである。[Detailed description of the invention] [Field of application of the invention] The present invention relates to a cooler for fuel cells.

〔発明の背景〕[Background of the invention]

従来の燃料電池用冷却器は誘電体被覆した冷却管の熱交
換部を冷却板に埋め込み、この熱交換部を埋め込んだ冷
却管を冷却母管に接続している（特開昭５８−８７７６
９号公報、特開昭５８−１１１２７３号公報）。In conventional fuel cell coolers, the heat exchange part of the dielectric-coated cooling pipe is embedded in the cooling plate, and the cooling pipe with the heat exchange part embedded is connected to the cooling main pipe (Japanese Patent Laid-Open No. 58-8776).
No. 9, JP-A-58-111273).

このように構成された冷却器で冷却管は一般に鋼管が使
用されるが、この鋼管に施される誘電体被覆層は冷却板
との絶縁を保ち、かつ燃料電池運転中に積層セルより出
て冷却板端部周辺に付着あるいは浸入する電解質に対し
て防護の役目を有している。しかし冷却管理設作業時に
発生する僅かな傷あるいは作業前に検出できない微小ピ
ンホール等、誘電体被覆層に不良部分があると、そこか
ら電解質が浸透して冷却管が腐食する問題があった。Steel pipes are generally used as the cooling pipes in coolers configured in this way, but the dielectric coating layer applied to these steel pipes maintains insulation from the cooling plate and prevents leakage from the stacked cells during fuel cell operation. It has the role of protecting against electrolyte adhering to or penetrating around the edges of the cooling plate. However, if there is a defective part in the dielectric coating layer, such as a slight scratch that occurs during cooling management installation work or a minute pinhole that cannot be detected before work, there is a problem that the electrolyte will penetrate through there and corrode the cooling pipe.

〔発明の目的〕[Purpose of the invention]

本発明は以トの点に鑑みなされたものであり、冷却管の
腐食を防出し信頼性を向上することを可能とした燃料電
池用冷却器を提供することを目的とするものである。The present invention has been made in view of the above points, and it is an object of the present invention to provide a cooler for a fuel cell that can prevent corrosion of cooling pipes and improve reliability.

〔発明の概要〕[Summary of the invention]

すなわち本発明は冷却板と、この冷却板にその熱交換部
が埋設された冷却管とを備えた燃料電池用冷却器におい
て、前記冷却管が、その冷却板端部側埋設部および前記
冷却板から突出した部分を耐食用鋼管、前記冷却板端部
側より中央側埋設部を前記耐食用鋼管に異材継手を介し
て連結し、かつ耐食用鋼管より熱伝導率の大きい管で形
成されたものであることを特徴とするものであり、これ
によって電解質が付着あるいは浸入し易い冷却板端部側
の冷却管が腐食し難くなる。That is, the present invention provides a fuel cell cooler comprising a cooling plate and a cooling pipe whose heat exchange portion is buried in the cooling plate, wherein the cooling pipe is connected to the buried portion on the end side of the cooling plate and the cooling plate. The part protruding from the cooling plate is a corrosion-resistant steel pipe, and the part buried in the center from the end of the cooling plate is connected to the corrosion-resistant steel pipe via a dissimilar metal joint, and is formed of a pipe with higher thermal conductivity than the corrosion-resistant steel pipe. This makes it difficult for the cooling pipes on the cooling plate end side, where electrolytes tend to adhere or penetrate, to corrode.

〔発明の実施例〕[Embodiments of the invention]

以下、図示した実施例に基づいて本発明を説明する。第
１図には本発明の一実施例が示されて１する。同図に示
されているように燃料電池用冷却器は冷却板１、この冷
却板１にその熱交換部が埋設された冷却管２を備えてい
る。このように構成された燃料電池用冷却器で本実施例
では冷却管２を。The present invention will be explained below based on the illustrated embodiments. An embodiment of the present invention is shown in FIG. As shown in the figure, the fuel cell cooler includes a cooling plate 1 and a cooling pipe 2 in which a heat exchange portion thereof is embedded in the cooling plate 1. In this embodiment, the cooling pipe 2 of the fuel cell cooler configured as described above is used.

その冷却板端部側埋設部および冷却板１から突出した部
分を耐食用鋼管３，４、冷却板端部側より中央側埋設部
を耐食用鋼管３，４に異材継手５を介して連結し、かつ
耐食用鋼管３，４より熱伝導率の大きい管６で形成した
。このようにすることにより冷却管２は、冷却板端部側
埋設部および冷却板１から突出した部分が耐食用鋼管３
，４、冷却板端部側より中央側埋設部が耐食用ｌｌ管３
，４に異材継手５を介して連結され、かつ耐食用鋼管３
．４より熱伝導率の大きい管６で形成されるようになっ
て、電解質が付着あるいは浸入し易い冷却板端部側が耐
食用鋼管３．４で腐食し難くなり、冷却管２の腐食を防
止し信頼性を向上することを可能とした燃料電池用冷却
器を得ることができる６すなわち冷却板１より突出した
部分および冷却板端部側埋設部を耐食用ｍ管３，４、冷
却板１の中央側埋設部を耐食用鋼管３，４より熱伝導率
の大きい管６で形成し、この７？？６により大部分の熱
交換を行なうようにした。そして耐食用鋼管３゜４には
ステンレス鋼鋼管、管６には鋼管を用いた。The buried part on the end side of the cooling plate and the part protruding from the cooling plate 1 are connected to the corrosion-resistant steel pipes 3 and 4, and the buried part on the center side from the end side of the cooling plate is connected to the corrosion-resistant steel pipes 3 and 4 via a dissimilar material joint 5. , and the pipe 6 has a higher thermal conductivity than the corrosion-resistant steel pipes 3 and 4. By doing so, the cooling pipe 2 has the buried part on the end side of the cooling plate and the part protruding from the cooling plate 1 as the corrosion-resistant steel pipe 2.
, 4. The buried part on the center side from the end side of the cooling plate is a corrosion-resistant ll pipe 3
, 4 via a dissimilar metal joint 5, and the corrosion-resistant steel pipe 3
．． 4, the cooling plate end side, where electrolyte is likely to adhere or penetrate, is made of corrosion-resistant steel pipe 3.4, which prevents corrosion of the cooling pipe 2. It is possible to obtain a fuel cell cooler that can improve reliability. 6. In other words, the part protruding from the cooling plate 1 and the buried part on the end side of the cooling plate are connected to the corrosion-resistant m-tubes 3, 4, and the cooling plate 1. The central buried part is formed of a pipe 6 having a higher thermal conductivity than the corrosion-resistant steel pipes 3 and 4, and this 7? ? 6 to perform most of the heat exchange. A stainless steel pipe was used for the corrosion-resistant steel pipe 3.4, and a steel pipe was used for the pipe 6.

このようにすることにより電解質が付着あるいは浸入し
易い冷却板端部側が耐食用鋼管３，４で形成されるので
、誘電体被覆層に不良部分があってこの部分に電解質が
付着または浸透してもその腐食が防止されるようになり
、冷却管２の腐食を大幅に軽減することができ、その信
頼性を向」−することができる。By doing this, the ends of the cooling plate, where electrolyte tends to adhere or penetrate, are formed of corrosion-resistant steel tubes 3 and 4, so if there is a defective part in the dielectric coating layer, electrolyte may adhere to or penetrate into this part. Therefore, corrosion of the cooling pipe 2 can be significantly reduced, and its reliability can be improved.

〔発明の効果〕〔Effect of the invention〕

上述のように本発明は冷却管の腐食が防止されて信頼性
が向上するようになって、冷却管の腐食を防止し信頼性
を向上することを可能とした燃料電池用冷却器を得るこ
とができる。As described above, the present invention prevents corrosion of cooling pipes and improves reliability, thereby providing a cooler for a fuel cell that can prevent corrosion of cooling pipes and improve reliability. I can do it.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の燃料電池用冷却器の一実施例の平面図
である。 １・・・冷却板、２・・・冷却管、３，４・・・耐食用
鋼管、５・・異材継手、６・・・管。FIG. 1 is a plan view of an embodiment of the fuel cell cooler of the present invention. DESCRIPTION OF SYMBOLS 1... Cooling plate, 2... Cooling pipe, 3, 4... Corrosion-resistant steel pipe, 5... Dissimilar material joint, 6... Pipe.

Claims (1)

【特許請求の範囲】[Claims] １、冷却板と、この冷却板にその熱交換部が埋設された
冷却管とを備えた燃料電池用冷却器において、前記冷却
管が、その冷却板端部側埋設部および前記冷却板から突
出した部分を耐食用鋼管、前記冷却板端部側より中央側
埋設部を前記耐食用鋼管に異材継手を介して連結し、か
つ耐食用鋼管より熱伝導率の大きい管で形成されたもの
であることを特徴とする燃料電池用冷却器。1. In a fuel cell cooler equipped with a cooling plate and a cooling pipe whose heat exchange part is buried in the cooling plate, the cooling pipe protrudes from the buried part on the end side of the cooling plate and the cooling plate. The part connected to the corrosion-resistant steel pipe is connected to the corrosion-resistant steel pipe through a dissimilar material joint, and the buried part from the end side of the cooling plate toward the center is connected to the corrosion-resistant steel pipe through a dissimilar metal joint, and is formed of a pipe having a higher thermal conductivity than the corrosion-resistant steel pipe. A fuel cell cooler characterized by:
JP60212477A 1985-09-27 1985-09-27 Cooler for fuel cell Pending JPS6273569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60212477A JPS6273569A (en) 1985-09-27 1985-09-27 Cooler for fuel cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60212477A JPS6273569A (en) 1985-09-27 1985-09-27 Cooler for fuel cell

Publications (1)

Publication Number Publication Date
JPS6273569A true JPS6273569A (en) 1987-04-04

Family

ID=16623291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60212477A Pending JPS6273569A (en) 1985-09-27 1985-09-27 Cooler for fuel cell

Country Status (1)

Country Link
JP (1) JPS6273569A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5481659A (en) * 1990-01-21 1996-01-02 Sony Corporation Method for generating free-form surface data

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168475A (en) * 1981-04-10 1982-10-16 Hitachi Ltd Fuel cell
JPS60167274A (en) * 1984-02-09 1985-08-30 Toshiba Corp Fuel cell

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168475A (en) * 1981-04-10 1982-10-16 Hitachi Ltd Fuel cell
JPS60167274A (en) * 1984-02-09 1985-08-30 Toshiba Corp Fuel cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5481659A (en) * 1990-01-21 1996-01-02 Sony Corporation Method for generating free-form surface data

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