JP4039206B2 - Electric vehicle battery device - Google Patents

Electric vehicle battery device Download PDF

Info

Publication number
JP4039206B2
JP4039206B2 JP2002307242A JP2002307242A JP4039206B2 JP 4039206 B2 JP4039206 B2 JP 4039206B2 JP 2002307242 A JP2002307242 A JP 2002307242A JP 2002307242 A JP2002307242 A JP 2002307242A JP 4039206 B2 JP4039206 B2 JP 4039206B2
Authority
JP
Japan
Prior art keywords
duct
housing
exhaust
battery
electric vehicle
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.)
Expired - Fee Related
Application number
JP2002307242A
Other languages
Japanese (ja)
Other versions
JP2004142524A (en
Inventor
達雄 木内
信秀 志賀
育夫 金子
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.)
Mitsubishi Fuso Truck and Bus Corp
Original Assignee
Mitsubishi Fuso Truck and Bus Corp
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 Mitsubishi Fuso Truck and Bus Corp filed Critical Mitsubishi Fuso Truck and Bus Corp
Priority to JP2002307242A priority Critical patent/JP4039206B2/en
Publication of JP2004142524A publication Critical patent/JP2004142524A/en
Application granted granted Critical
Publication of JP4039206B2 publication Critical patent/JP4039206B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • H01M10/625—Vehicles
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/36—Vehicles designed to transport cargo, e.g. trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/60—Navigation input
    • B60L2240/66—Ambient conditions
    • B60L2240/662—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/28—Four wheel or all wheel drive
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば電気自動車、特にハイブリッド電気自動車を含むトラック用の電気自動車のバッテリ装置に関する。
【０００２】
【従来の技術】
モータを駆動源とした電気自動車や、エンジンとモータを組合わせたハイブリッド電気自動車では、車体にバッテリユニットを搭載して、モータに電力を供給することが行われている。
【０００３】
こうした電気自動車におけるバッテリユニットの車載は、乗用車では、荷室内の一部やサイドシルで囲まれるフロア下面にバッテリユニットを据付けることが行われている（例えば特許文献１を参照）。
【０００４】
【特許文献１】
特開平１１−６７１７７号公報
【０００５】
【発明が解決しようとする課題】
ところで、上述した乗用車に搭載されたバッテリユニットは、車体の構造部分で周囲が覆われるため、水の浸入に対しては考慮されていない。
【０００６】
これに対しトラックの場合、積載能力を確保するために、トラックの車体構造の観点から、バッテリユニットは、荷箱下に配置されているシャシフレーム（車体フレーム）の側部に設置せざるを得ない。
【０００７】
ところが、トラックのシャシフレームは、外部に剥き出しの部品であるために、同シャシフレームに付くバッテリユニットも、外部に剥き出しとなる。このため、トラックでは、バッテリユニットが外気に晒されるために、乗用車とは異なった性能が求められる。
【０００８】
すなわち、トラックは、乗用車と異なり、水溜まりを走行することがあるので、渡渉性を確保することが求められる。
【０００９】
渡渉性のためには、バッテリユニットの周囲を筐体で覆うことが考えられるが、単純に覆ったのでは、バッテリユニットの冷却性が損なわれる。かといって、単純に通風式の冷却装置を採用して、冷却装置の吸排気口を外部に開口させたのでは、同吸排気口から水が浸入するおそれがあり、簡単には渡渉性が確保できない。
【００１０】
そこで、本発明は、冷却装置の吸排気口からの水の浸入を防いで、バッテリユニットの冷却性の確保をしつつ、求められる渡渉性を確保することができる電気自動車のバッテリ装置を提供することにある。
【００１１】
【課題を解決するための手段】
上記目的を達成するために請求項１に記載の発明は、トラックである電気自動車のバッテリユニットの周囲を、前記電気自動車のシャシフレームの側方に固定される筐体で覆い、バッテリユニットを冷却するために筐体内に外気を取り入れる吸込ダクトを設け、吸込ダクトから筐体内に取入れられてバッテリユニットを冷却し終えた外気を筐体の外部に排気する排気ダクトを設け、吸込ダクトまたは排気ダクトの先端を筐体の上面または側面に近接対向させ、吸込ダクトおよび排気ダクトの先端が、電気自動車のタイヤの中心位置よりも上側に配置される構成を採用した。
【００１２】
これにより、吸気ダクトや排気ダクトから水の浸入を防ぎ、さらには良好なバッテリユニットの冷却性を得つつ、水溜まりの走行に耐える渡渉性が確保される。
【００１３】
請求項２に記載の発明は、筐体の内部に配置されると共に筐体内部へ吸気し筐体外部への排気を行う冷却ファンを更に備え、吸込ダクトまたは排気ダクトが、筐体の上面から立位の姿勢で固定されると共に、コ字形のダクト形状をなして筐体の上面に先端を近接対向させて、たとえ水が直接、かけられても、水が浸入しない構成とした。
請求項３に記載の発明は、吸込ダクトまたは排気ダクトの先端が、シャシフレームの下面より上側かつシャシフレームの上面より下側に配置される構成とした。
【００１４】
【発明の実施の形態】
以下、本発明を図１ないし図５に示す一実施形態にもとづいて説明する。
【００１５】
図１は電気自動車、例えばトラック用のハイブリッド電気自動車の側面図を示し、図２は同電気自動車の平面図をそれぞれ示していて、同図中１はシャシフレーム（車体フレーム）である。シャシフレーム１は、車両前後方向に延びる一対のサイドフレーム２を有するラダー構造で形成してある。
【００１６】
このシャシフレーム１の前部両側には前輪３（操舵輪）が懸架させてあり、後部両側には後輪４（駆動輪）が懸架させてある。そして、シャシフレーム１の前部にはキャブ５が搭載され、後部には同キャブ５と隣接して、架装物、例えば荷箱６が搭載され、車体を構成している。
【００１７】
シャシフレーム１の前部には、サイドフレーム２間に位置して、例えば走行用（車両駆動用）のエンジン７、クラッチ装置８、モータ装置９、トランスミッション１０を組合わせた動力ユニット１１が据付けてある。そして、トランスミッション１０の出力部が、例えばプロペラシャフト１２、デファレンシャル１３を介して後輪４に接続され、エンジン７あるいはモータ装置９からの動力、又は双方の動力で、後輪４を駆動できるようにしている。
【００１８】
一方、２１はモータ装置９へ電力を供給するバッテリ装置を示す。このバッテリ装置２１は、図１および図２に示されるようにシャシフレーム１、例えば前・後輪３，４間から外部に臨むサイドフレーム２の側部に据付けてある。
【００１９】
バッテリ装置２１には、バッテリユニット２２と、そのバッテリユニット２２の周囲全体を覆う筐体２３と組合わせた構造が用いてある。このバッテリ装置２１の全体の外観が図３に示され、同バッテリ装置２１の分解した構造が図４に示され、同バッテリ装置２１の断面が図５に示してある。
【００２０】
バッテリユニット２２は、バッテリ本体となる例えば図４に示されるような多数のバッテリセル２５を集約して構成されるセルモジュール２６、冷却装置としてのファンＢＯＸ３０、各種の制御装置、例えばキーオフ操作に連動して給電経路をリレー（図示しない）で遮断するジャンクションＢＯＸ３５、安全スイッチＢＯＸ４０、各バッテリセルを平滑化するなどバッテリ管理を行うバッテリ管理装置４５を有して構成してある。
【００２１】
各部を説明すると、セルモジュール２６は、例えば図４および図５に示されるように車両前後方向に沿って延びる略角筒形のケース２７を有している。このケース２７の内部は、例えば仕切部２８によって上下二段に区画してある。この区画した上下の室には、例えば隙間を存して多数のバッテリセル２５が設置され、該バッテリセル２５を集約させてある。つまり、各バッテリセル２５は、出入り口をもつ通風路２９に集中して設置させてある。これにより、通風冷却可能なセルモジュール２６を構成している。
【００２２】
上下のバッテリセルモジュール群は、セルモジュール２６を幅方向から挟んだ片側に組付けた上記安全スイッチＢＯＸ４０を介して直列に接続してある。そして、これらバッテリセルモジュール群はモータ装置９の給電系統などに接続され、バッテリセル２５を直列につないで得られる電力がモータ装置９へ供給されるようにしてある。また安全スイッチＢＯＸ４０は、上下のバッテリセル群が直列につながる経路に介装された遮断スイッチ４１、同遮断スイッチ４１を収めたケース４２、同ケース４２の外部に露出する車幅方向側面に設けたスイッチ操作用のノブ４３を有して構成されている。つまり、ノブ４３を遮断側へ操作すると、遮断スイッチ４１が開放して、バッテリユニット２２の給電経路が遮断されるようにしてある。
【００２３】
ケース２７の車両後方側の端部には、上記ファンＢＯＸ３０が接続してある。ファンＢＯＸ３０は、図４および図５に示されるようにケース２７の後端とつらなる箱形のケース３６と、このケース３６内に収容された複数の冷却ファン、例えば２個づつ上下段に設置されたブロア形の電動式冷却ファン３７（以下、単に冷却ファンという）とを有している。このうち冷却ファン３７の吸込口部３７ａは、各段（上下段）毎にケース２７内に連通させてある。また各吹出し口部３７ｂは、ケース３６内に開口して、ケース３６の上壁部に形成した通孔、例えば幅方向に延びる長方形状の通孔３８と連通させてある。
【００２４】
また連なるケース２７およびケース３６の側部には、安全スイッチＢＯＸ４０と隣接して、上記バッテリ管理装置４５が組付けてある。これと反対側のケース２７およびケース３６の側部には、上記ジャンクションＢＯＸ３５が組付けてあり、バッテリに関する機器を１個所に集約させたバッテリユニット２２を構成している。
【００２５】
またバッテリユニット２２の周りを覆う筐体２３は、複数に分割、例えば上下方向に３分割された構造が用いてある。具体的には、図４および図５に示されるように筐体２３は、上部が開放する略皿状の下部筐体部分２４ａ、上部と下部との双方が開放している略短筒状の中央筐体部分２４ｂ、下部が開放する略蓋状の上部筐体部分２４ｃとに分割してある。このうちベースとなる下部筐体部分２４ａの底面に、バッテリユニット２２が据付けてある。なお、各筐体部分２４ａ〜２４ｃは、防磁性材料、例えば金属プレート（Ｆｅ，Ａｌ等）を加工した金属製の部品を用いて構成してある。また各筐体部分２４ａ〜２４ｃの開口端の外周部には、分割面を囲うようにフランジ、例えばシャシフレーム１の厚みと同等の厚み寸法を有する金属製（Ｆｅ，Ａｌ等）のフランジ５０が溶接などで環状に取着してある。そして、隣接するフランジ５０，５０同士が、それらフランジ５０，５０間に防磁性のシール部材、例えばゴムに金属材料を練り込んで形成される枠状のシール材５１を挟み込んで、締結部材、例えば複数のボルトナット５２（図５にだけ図示）で着脱可能に締結してある。この筐体２３でバッテリユニット２２を収納する構造により、バッテリユニット２２の周囲を防水構造にし、さらに防磁構造、すなわちバッテリユニット２２の周囲をシールドしている。また図４に示されるように上部筐体部分２４ｃの上壁部５３のち、車両前方側の地点と、通孔３８と対応した車両後方側の地点には、通孔、例えば車幅方向に延びる長方形状の通孔５４，５５が形成してある。そして、前側に配置された通孔５４と合致させて、上壁部５３の上面には、ダクト、例えば吸込ダクト５６が立位の姿勢で固定、例えばボルトナット５３ａ（図５しか図示せず）で締結してある。また後側に配置された通孔５５と合致させて、上壁部５３の上面には、ダクト、例えば排気ダクト５７が立位の姿勢（立位）で固定、例えばボルトナット５３ｂ（図５しか図示せず）で同様に締結してある。排気ダクト５７は、通孔５５とその直下の通孔３８との間に介装した中継ダクト５８を経て、冷却ファン３７の吹出し口部３７ｂと連通させてあり、冷却ファン３７が作動すると、吸込ダクト５６の先端に形成された吸込口５６ａから外気を吸込み、同空気がケース２７内の通風路２９、中継ダクト５８および排気ダクト５７を流れて、排気ダクト５７の先端に形成された排気口５７ａから外気へ吹き出される（排気）ようにしている。そして、通風路２９での空気の流通により、ケース２７内に収められた各バッテリセル２５が冷却されるようにしてある。なお、冷却ファン３７は、例えばバッテリ管理装置４５によって、例えばバッテリセル２５が所定温度まで上昇すると、作動する制御が採用してある。また筐体２３の吸・排経路の途中の部位、例えば通孔５４，５５の双方には、その開口を裏側から遮るように防磁フィルタ、例えば防磁性を有するエアフィルタ３１（例えばエアフィルタに防磁性材料を取着した部品）が取付けられていて、吸・排経路からも電磁波が漏れない構造にしている。吸込ダクト５６および排気ダクト５７には、いずれも先端が上部筐体部分２４ｃの上面に向かう形状、例えば上部筐体部分２４ｃの中央側へコ字形に曲げた部品が用いてある。このダクト形状で、吸込ダクト５６の先端の吸込口５６ａ、排気ダクト５７の先端の排気口５７ａを、上部筐体部分２４ｃの上面に対し近接させて向き合わせている（近接対向）。この吸込口５６ａ、排気口５７ａを筐体上面で外部から見えなくする構造、コ字形のダクト形状がもたらす吸・排経路のラビリンス構造により、外部から異物や水などが吸・排気口５６ａ，５７ａへ浸入するのを防ぐ構造としている。またラビリンス化された吸・排経路の途中の部位、例えばダクトの曲り部をなす内周側の内面部分には、一部通路を遮るように邪魔板部３２が取付けられ、異物や水に対する浸入防止構造を強化している。また筐体２３には、安全性のために、筐体２３を分解してバッテリユニット２２をメンテナンスする際、安全スイッチＢＯＸ４０のスイッチ操作をうながす安全構造が設けてある。同構造は、例えば図３および図４に示されるように中央筐体部分２４ｂのうち、安全スイッチＢＯＸ４０と向き合う周壁部分に形成された、同ＢＯＸ４０の側面に有るノブ４３を外部に露出させる開口部４７と、同開口部４７を外方から固定具、例えばボルトナット（図示しない）で着脱可能に塞ぐ例えばプレート状の蓋板４８と、この蓋板４８の一部に形成された邪魔板部４９を有して構成してある。詳しくは、邪魔板部４９は、蓋板４８の下端部から逆Ｌ字状に突出させた帯板部から形成してあり、この帯板部の先端の水平方向に延びる部分で、例えば開口部４７の直下に存するボルトナット５２（下部筐体部分２４ａと中央筐体部分２４ｂとを締結する部品）の頭部の直上を遮る構造にしてある。つまり、邪魔板部４９の先端部で、ボルトナット５２の解除操作を邪魔する構造にしてある。これで、中央筐体部分２４ｂと下部筐体部分２４ａとの締結を解く作業（筐体２３の分解作業）の際、蓋板４８を取り外す作業を強制して、必ず安全スイッチＢＯＸ４０のノブ４３を作業者の目に触れさせ、同ノブ４３の操作をうながすようにしてある。
【００２６】
このように構成されたバッテリ装置２１は、例えば図１〜図３に示されるようにサイドフレーム２の側部に取着してある複数のＬ字形のサポート部材６０に載せ、各サポート部材６０から延びる複数本のバンド６１でサポート部材６０に挟み付けという据付構造で、サイドフレーム２の側部に固定してある。そして、バッテリ装置２１は、フランジ５０が車体前後および車幅方向両側に張り出させた姿勢に固定してある。
【００２７】
またトラックの渡渉性を確保するべく、筐体２３の吸込口５６ａおよび排気口５７ａが共に前輪３や後輪４（いずれもタイヤ）の中心位置Ａよりも上側になる地点に、バッテリ装置２１を据付けている。これにより、たとえ前輪４や後輪４の中心付近の水位を走行するような状況下でも、正常にバッテリ装置２１が機能するようにしてある。
【００２８】
また筐体２３の一部、例えば下部筐体部分２４ａのフランジ５０からは、一端部がフランジ５０に例えば溶接で取着されたアース線６３が延びている。このアース線６３の他端部は、車体、例えば近くのサイドフレーム部分に接続されていて、バッテリユニット２２をシールドしている筐体２３を車体へアースしている。
【００２９】
このように構成されたトラックは、エンジン７からの動力やモータ装置９からの動力やそれら双方の動力を併用した走行が行われる。
【００３０】
このとき、バッテリセル２５が冷却を必要とする温度まで上昇すると、冷却ファン３７が作動して、バッテリセル２５の通風冷却が行われる。すなわち、図５に示されるように冷却ファン３７の作動に伴い、吸込ダクト５６の吸込口５６ａから外気が吸込まれる。同外気が、吸込ダクト５６、エアフィルタ３１を通じて、冷却空気として筐体２３内に取り込まれる。そして、この冷却空気がケース２７の内部を流通して、該ケース２７内に収めてある各バッテリセル２５を冷却する。そして、冷却を終えた空気が、ケース３６内、中継ダクト５８、エアフィルタ３１を経て、排気ダクト５７の先端の排気口５７ａから外部（筐体外）へ排気される。
【００３１】
ここで、トラックが水溜まりを走行するような状況になったとする。
【００３２】
このとき、バッテリユニット２２は、その周囲が筐体２３で覆われるだけでなく、吸込・排気ダクト５６，５７を用いて吸込口５６ａや排気口５７ａをタイヤ中心より上側に配置されるよう車体に組付けてあるから、たとえ剥き出しの筐体２３が水に浸漬しながら水溜まりを走行しても、冷却用の吸込口５６ａや排気口５６ａから水が浸入せずにすむ。
【００３３】
それ故、冷却用の吸込口５６ａ，排気口５７ａから水の浸入が防げるうえ、良好なバッテリユニット２２の冷却性が得られ、水溜まりの走行に耐え得る渡渉性を確保することができる。特に吸込口５６ａ，排気口５７ａがタイヤ中心よりも上側に開口させることにより、トラックは最低限の渡渉性が確保できる。好ましくは、吸込口５６ａ，排気口５７ａがシャシフレーム１（車体フレーム）の下面より上側に配置されるのであれば、求められる通常の渡渉性が確保されるよう、吸込口５６ａ，排気口５７ａからの水の浸入を確実に防ぐことができる。
【００３４】
しかも、吸込口５６ａ，排気口５７ａは、筐体上面で開口を隠すようにしてあるので（カバー）、たとえ洗車など、高圧の水が各ダクト５６，５７に向け噴射されて、直接、水が吸込口５６ａや排気口５７ａが有る部分へかけられることがあっても、吸込口５６ａや排気口５７ａへには水が浸入せずにすむ。そのうえ、吸込ダクト５６、排気ダクト５７には、ラビリンス（迷路）をなす形状を用いているので、万一、吸込口５６ａや排気口５７ａへ水が浸入したとしても、直ぐには筐体内部、すなわちバッテリユニット２２までは水が到達せずにすむ。特に吸込ダクト５６や排気ダクト５７がなす吸排経路の途中には、異物や水に対する浸入を防ぐ邪魔板部３２が設けてあるので、一層、バッテリユニット２２までは水が到達しにくく、高い保全性をもたらす。加えて吸排経路には、防磁性を有するエアフィルタ３１が組込んであるので、筐体２３のシールド性と併せて、高い防磁機能（電磁波の放出を遮断）を確保できる利点がある。
【００３５】
なお、本発明は上述した一実施形態に限定されることなく、本発明の主旨を逸脱しない範囲内で種々変更して実施しても構わない。上述の一実施形態では、吸込口や排気口が筐体の上下方向に向いている吸込ダクト、排気ダクトを用いた例を挙げたが、これに限らず、吸込ダクトや排気ダクトは、筐体の側方に吸込口や排気口が向いているダクトを用いてもよいし、筐体の上面ではなく筐体の側面に吸込ダクトや排気ダクトを取付けた構造でもよく、要は吸込口や排気口がタイヤ中心から上側に配置されるのであればよい。むろん、各ダクトの形状も、コ字形ではなく他の形状でもよい。また一実施形態では、筐体上面に吸込口、排気口を近接対向させて、該吸込口や排気口から異物や水が浸入しないようにしたが、筐体でなく、他の板部材で、タイヤ中心より上側に配置される吸込口や排気口をカバーして、異物や水の浸入を邪魔する構造としてもよい。また一実施形態では、バッテリユニットとして、バッテリ本体となるセルモジュールに、ファンＢＯＸ、ジャンクションＢＯＸ、安全スイッチ、バッテリ管理装置を組合わせた構造を挙げたが、これ以外の構造のバッテリユニットでもよい。さらに一実施形態では、本発明をハイブリッド電気自動車に適用したが、これに限らず、バッテリユニットの電力で作動するモータ装置だけで走行を行う電気自動車に本発明を適用してもよい。
【００３６】
【発明の効果】
以上説明したように請求項１、３に記載の発明によれば、バッテリユニット内蔵の筐体を、車体に外部に剥き出しの状態で取付けて、水溜まりを走行しても、筐体の上面または側面が吸込ダクトまたは排気ダクトの先端をカバーしているうえ、吸込ダクトや排気ダクトの先端がタイヤ中心より上側にあるので、バッテリユニットの良好な冷却性を確保しつつ、水溜まりの走行に耐える渡渉性を確保することができる。
【００３７】
請求項２に記載の発明によれば、上記効果に加え、たとえ洗車などで、高圧の水が、直接、かけられることがあっても、水が吸込ダクトや排気ダクトへ浸入するのを防ぐことができるといった効果を奏する。
【図面の簡単な説明】
【図１】本発明の一実施形態に係るバッテリ装置を、そのバッテリ装置を搭載した電気自動車と共に示す側面図。
【図２】同じくその平面図。
【図３】同バッテリ装置の外観を示す斜視図。
【図４】同バッテリ装置を分解した分解斜視図。
【図５】図３中のＸ−Ｘ線に沿うバッテリ装置の断面図。
【符号の説明】
１…シャシフレーム（車体フレーム）
３，４…前輪，後輪（タイヤ）
２１…バッテリ装置
２２…バッテリユニット
２３…筐体
３０…ファンＢＯＸ（冷却装置）
３７…冷却ファン
５６…吸込ダクト
５６ａ…吸込口
５７…排気ダクト
５７ａ…排気口。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery device for an electric vehicle for trucks including, for example, an electric vehicle, particularly a hybrid electric vehicle.
[0002]
[Prior art]
In an electric vehicle using a motor as a driving source or a hybrid electric vehicle combining an engine and a motor, a battery unit is mounted on the vehicle body and power is supplied to the motor.
[0003]
As for the mounting of the battery unit in such an electric vehicle, in a passenger car, the battery unit is installed on a lower surface of a floor surrounded by a part of a cargo compartment or a side sill (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-67177
[Problems to be solved by the invention]
By the way, since the periphery of the battery unit mounted on the above-described passenger car is covered with the structural portion of the vehicle body, the intrusion of water is not considered.
[0006]
On the other hand, in the case of trucks, in order to ensure the loading capacity, the battery unit must be installed on the side of the chassis frame (body frame) arranged under the cargo box from the viewpoint of the truck body structure. Absent.
[0007]
However, since the chassis frame of the truck is a part that is exposed to the outside, the battery unit attached to the chassis frame is also exposed to the outside. For this reason, in a truck, since the battery unit is exposed to the outside air, performance different from that of a passenger car is required.
[0008]
In other words, unlike a passenger car, a truck may travel in a puddle, so that it is required to ensure crosstalk.
[0009]
Although it is conceivable to cover the periphery of the battery unit with a casing for the sake of interferability, the simple cooling of the battery unit impairs the cooling performance of the battery unit. However, simply adopting a ventilation-type cooling device and opening the intake / exhaust port of the cooling device to the outside may cause water to enter from the intake / exhaust port. It cannot be secured.
[0010]
Therefore, the present invention provides a battery device for an electric vehicle that can prevent the intrusion of water from the intake / exhaust port of the cooling device, and can secure the required crossing property while ensuring the cooling performance of the battery unit. There is.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the battery unit of the electric vehicle, which is a truck, is covered with a casing fixed to the side of the chassis frame of the electric vehicle to cool the battery unit. For this purpose, a suction duct for taking in outside air is provided in the housing, and an exhaust duct for exhausting outside air that has been taken into the housing from the suction duct and has cooled the battery unit to the outside of the housing is provided. A configuration is adopted in which the front end is close to and opposed to the upper surface or side surface of the housing, and the front ends of the suction duct and the exhaust duct are disposed above the center position of the tire of the electric vehicle.
[0012]
As a result, it is possible to prevent water from entering from the intake duct and the exhaust duct , and to obtain a good cooling performance of the battery unit, while ensuring the ability to withstand the running of the water pool.
[0013]
The invention according to claim 2 is further provided with a cooling fan that is disposed inside the housing and sucks air into the housing and exhausts the outside of the housing, and the suction duct or the exhaust duct is provided from the upper surface of the housing. In addition to being fixed in an upright position, it has a U-shaped duct shape with its tip close to the upper surface of the housing, so that water does not enter even if water is directly applied.
The invention described in claim 3 is configured such that the tip of the suction duct or the exhaust duct is disposed above the lower surface of the chassis frame and below the upper surface of the chassis frame.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on an embodiment shown in FIGS.
[0015]
FIG. 1 shows a side view of an electric vehicle, for example, a hybrid electric vehicle for trucks, and FIG. 2 shows a plan view of the electric vehicle, in which 1 is a chassis frame (body frame). The chassis frame 1 is formed with a ladder structure having a pair of side frames 2 extending in the vehicle longitudinal direction.
[0016]
A front wheel 3 (steering wheel) is suspended on both sides of the front portion of the chassis frame 1, and a rear wheel 4 (driving wheel) is suspended on both sides of the rear portion. A cab 5 is mounted on the front part of the chassis frame 1, and a bodywork, for example, a cargo box 6, is mounted on the rear part adjacent to the cab 5 to constitute a vehicle body.
[0017]
At the front of the chassis frame 1, a power unit 11 is installed, which is located between the side frames 2, for example, a driving (vehicle driving) engine 7, a clutch device 8, a motor device 9, and a transmission 10. is there. The output portion of the transmission 10 is connected to the rear wheel 4 through, for example, the propeller shaft 12 and the differential 13 so that the rear wheel 4 can be driven by the power from the engine 7 or the motor device 9 or both powers. ing.
[0018]
On the other hand, reference numeral 21 denotes a battery device that supplies electric power to the motor device 9. As shown in FIGS. 1 and 2, the battery device 21 is installed on the side of the chassis frame 1, for example, the side frame 2 facing the outside from between the front and rear wheels 3 and 4.
[0019]
The battery device 21 uses a structure in which a battery unit 22 and a casing 23 that covers the entire periphery of the battery unit 22 are combined. The overall appearance of the battery device 21 is shown in FIG. 3, the exploded structure of the battery device 21 is shown in FIG. 4, and the cross section of the battery device 21 is shown in FIG.
[0020]
The battery unit 22 is a battery main body, for example, a cell module 26 configured by integrating a large number of battery cells 25 as shown in FIG. 4, a fan BOX 30 as a cooling device, various control devices, for example, linked to a key-off operation. Then, the power supply path is configured to include a junction BOX 35 that cuts off the power feeding path with a relay (not shown), a safety switch BOX 40, and a battery management device 45 that performs battery management such as smoothing each battery cell.
[0021]
Each part will be described. The cell module 26 includes a substantially rectangular tube case 27 extending along the vehicle front-rear direction as shown in FIGS. 4 and 5, for example. The inside of the case 27 is partitioned into two stages, for example, by a partition 28. In the partitioned upper and lower chambers, for example, a large number of battery cells 25 are installed with gaps, and the battery cells 25 are aggregated. That is, each battery cell 25 is concentrated and installed in the ventilation path 29 with an entrance. Thereby, the cell module 26 which can be cooled by ventilation is configured.
[0022]
The upper and lower battery cell module groups are connected in series via the safety switch BOX 40 assembled on one side of the cell module 26 sandwiched from the width direction. These battery cell module groups are connected to a power supply system or the like of the motor device 9 so that electric power obtained by connecting the battery cells 25 in series is supplied to the motor device 9. Further, the safety switch BOX 40 is provided on the side surface in the vehicle width direction that is exposed to the outside of the case 42, the case 42 that houses the cutoff switch 41, which is interposed in a path in which the upper and lower battery cell groups are connected in series. A switch operation knob 43 is provided. That is, when the knob 43 is operated to the cutoff side, the cutoff switch 41 is opened, and the power supply path of the battery unit 22 is cut off.
[0023]
The fan BOX 30 is connected to an end of the case 27 on the vehicle rear side. As shown in FIGS. 4 and 5, the fan BOX 30 is installed in a box-shaped case 36 that is connected to the rear end of the case 27, and a plurality of cooling fans accommodated in the case 36, for example, two in the upper and lower stages. And a blower type electric cooling fan 37 (hereinafter simply referred to as a cooling fan). Among these, the suction inlet 37a of the cooling fan 37 is communicated with the inside of the case 27 at each stage (upper and lower stages). Each outlet 37b opens into the case 36 and communicates with a through hole formed in the upper wall of the case 36, for example, a rectangular through hole 38 extending in the width direction.
[0024]
Further, the battery management device 45 is assembled to the side portions of the case 27 and the case 36 that are adjacent to the safety switch BOX 40. The junction BOX 35 is assembled to the side portions of the case 27 and the case 36 on the opposite side to constitute a battery unit 22 in which devices related to the battery are gathered in one place.
[0025]
The casing 23 covering the periphery of the battery unit 22 has a structure that is divided into a plurality of parts, for example, three parts in the vertical direction. Specifically, as shown in FIGS. 4 and 5, the housing 23 has a substantially dish-shaped lower housing portion 24 a whose upper portion is open, and a substantially short cylindrical shape whose both upper and lower portions are open. It is divided into a central housing part 24b and a substantially lid-shaped upper housing part 24c whose lower part is open. Among these, the battery unit 22 is installed on the bottom surface of the lower housing portion 24a serving as a base. Each housing portion 24a to 24c is configured by using a magnetic component obtained by processing a magnetic shielding material, for example, a metal plate (Fe, Al, etc.). In addition, a flange 50 made of metal (Fe, Al, etc.) having a thickness dimension equivalent to the thickness of the chassis frame 1 is provided on the outer peripheral portion of the open end of each casing portion 24a to 24c so as to surround the dividing surface. It is attached to the ring by welding. The adjacent flanges 50, 50 are sandwiched between the flanges 50, 50 with a magnetic seal member, for example, a frame-shaped seal material 51 formed by kneading a metal material into rubber, and a fastening member, for example, A plurality of bolts and nuts 52 (shown only in FIG. 5) are detachably fastened. With the structure in which the battery unit 22 is housed in the housing 23, the periphery of the battery unit 22 is made waterproof, and the magnetic shield structure, that is, the periphery of the battery unit 22 is shielded. Further, as shown in FIG. 4, after the upper wall portion 53 of the upper housing portion 24 c, the vehicle front side point and the vehicle rear side point corresponding to the through hole 38 extend in the through hole, for example, the vehicle width direction. Rectangular through holes 54 and 55 are formed. A duct, for example, a suction duct 56 is fixed in an upright position on the upper surface of the upper wall portion 53 so as to match with the through hole 54 arranged on the front side, for example, a bolt nut 53a (only FIG. 5 is shown). It is concluded with. In addition, a duct, for example, an exhaust duct 57 is fixed in an upright position (standing position) on the upper surface of the upper wall portion 53 so as to match the through hole 55 arranged on the rear side, for example, a bolt nut 53b (see FIG. 5 only). (Not shown). The exhaust duct 57 communicates with the blowout opening 37b of the cooling fan 37 via a relay duct 58 interposed between the through hole 55 and the through hole 38 directly below the exhaust duct 57. The outside air is sucked from the suction port 56 a formed at the tip of the duct 56, and the air flows through the ventilation path 29, the relay duct 58 and the exhaust duct 57 in the case 27, and the exhaust port 57 a formed at the tip of the exhaust duct 57. The air is blown out to the outside air (exhaust). The battery cells 25 housed in the case 27 are cooled by the air flow in the ventilation path 29. The cooling fan 37 employs control that operates when the battery cell 25 rises to a predetermined temperature, for example, by the battery management device 45, for example. In addition, a magnetic shielding filter, for example, an air filter 31 having magnetic shielding (for example, a magnetic shield on the air filter) is provided in a part of the housing 23 along the suction / exhaust path, for example, both the through holes 54 and 55 so as to shield the opening from the back side. The parts are attached with a conductive material), and the electromagnetic wave does not leak from the intake / exhaust path. Each of the suction duct 56 and the exhaust duct 57 uses a part whose tip is directed toward the upper surface of the upper housing portion 24c, for example, a part bent in a U shape toward the center of the upper housing portion 24c. With this duct shape, the suction port 56a at the front end of the suction duct 56 and the exhaust port 57a at the front end of the exhaust duct 57 are brought close to each other and face each other (proximity facing). Due to the structure in which the suction port 56a and the exhaust port 57a are not visible from the outside on the upper surface of the housing, and the labyrinth structure of the suction / exhaust path provided by the U-shaped duct shape, foreign matter, water, etc. are sucked / exhaust ports 56a, 57a from the outside. It has a structure that prevents it from entering. In addition, a baffle plate 32 is attached to a part of the labyrinth intake / exhaust path, for example, an inner surface on the inner peripheral side that forms a bent part of the duct, so as to block a part of the passage, so that foreign matter and water can enter. The prevention structure is strengthened. Further, for safety, the housing 23 is provided with a safety structure that prompts the switch operation of the safety switch BOX 40 when the housing 23 is disassembled and the battery unit 22 is maintained. For example, as shown in FIG. 3 and FIG. 4, the structure is an opening formed in a peripheral wall portion facing the safety switch BOX 40 in the central housing portion 24 b to expose the knob 43 on the side surface of the BOX 40 to the outside. 47, the opening 47 is detachably closed from the outside with a fixing tool, for example, a bolt and nut (not shown), for example, a plate-shaped lid plate 48, and a baffle plate portion 49 formed in a part of the lid plate 48 It is comprised. Specifically, the baffle plate portion 49 is formed from a strip plate portion that protrudes in an inverted L shape from the lower end portion of the lid plate 48, and is a portion that extends in the horizontal direction at the tip of the strip plate portion, for example, an opening portion. 47, the bolt nut 52 (part for fastening the lower housing portion 24a and the central housing portion 24b) directly below the head portion of the bolt nut 52 is provided. That is, the distal end portion of the baffle plate portion 49 has a structure that obstructs the release operation of the bolt and nut 52. This forces the work of removing the cover plate 48 during the work of unfastening the central housing part 24b and the lower housing part 24a (the work of disassembling the housing 23), and the knob 43 of the safety switch BOX 40 must be turned on. The operator touches the operator's eyes and prompts the operator to operate the knob 43.
[0026]
The battery device 21 configured as described above is mounted on a plurality of L-shaped support members 60 attached to the side portions of the side frames 2 as shown in FIGS. It is fixed to the side portion of the side frame 2 with an installation structure in which a plurality of extending bands 61 are sandwiched between the support members 60. And the battery apparatus 21 is being fixed to the attitude | position which the flange 50 extended over the vehicle body front-back and the vehicle width direction both sides.
[0027]
Further, in order to ensure the truck's ability to cross the track, the battery device 21 is placed at a point where both the suction port 56a and the exhaust port 57a of the housing 23 are above the center position A of the front wheel 3 and the rear wheel 4 (both tires). It is installed. As a result, the battery device 21 functions normally even under a situation where the vehicle travels around the water level near the center of the front wheel 4 or the rear wheel 4.
[0028]
Further, a ground wire 63 having one end attached to the flange 50 by welding, for example, extends from a part of the housing 23, for example, the flange 50 of the lower housing portion 24a. The other end of the ground wire 63 is connected to a vehicle body, for example, a nearby side frame portion, and grounds the housing 23 that shields the battery unit 22 to the vehicle body.
[0029]
The truck configured as described above travels using the power from the engine 7, the power from the motor device 9, and both powers.
[0030]
At this time, when the battery cell 25 rises to a temperature that requires cooling, the cooling fan 37 is activated to cool the battery cell 25 through ventilation. That is, as shown in FIG. 5, along with the operation of the cooling fan 37, outside air is sucked from the suction port 56 a of the suction duct 56. The outside air is taken into the housing 23 as cooling air through the suction duct 56 and the air filter 31. Then, this cooling air flows through the inside of the case 27 and cools each battery cell 25 housed in the case 27. Then, the cooled air is exhausted to the outside (outside of the casing) from the exhaust port 57a at the tip of the exhaust duct 57 through the case 36, the relay duct 58, and the air filter 31.
[0031]
Here, it is assumed that the truck is traveling in a puddle.
[0032]
At this time, the battery unit 22 is not only covered with the casing 23, but the suction port 56a and the exhaust port 57a are disposed above the tire center using the suction / exhaust ducts 56 and 57. Since it is assembled, even if the exposed casing 23 travels in a water pool while being immersed in water, water does not enter through the cooling inlet 56a and the exhaust outlet 56a.
[0033]
Therefore, intrusion of water from the cooling inlet 56a and the exhaust outlet 57a can be prevented, and a good cooling performance of the battery unit 22 can be obtained, so that the ability to withstand running of the water pool can be ensured. In particular, when the suction port 56a and the exhaust port 57a are opened above the center of the tire, the minimum crosstalk of the truck can be ensured. Preferably, if the suction port 56a and the exhaust port 57a are arranged above the lower surface of the chassis frame 1 (vehicle body frame), the suction port 56a and the exhaust port 57a are secured so as to ensure the required normal crosstalk. Intrusion of water can be reliably prevented.
[0034]
In addition, since the suction port 56a and the exhaust port 57a are configured to conceal the opening on the upper surface of the housing (cover), high-pressure water, such as a car wash, is jetted toward the ducts 56 and 57, and water is directly supplied. Even if it is applied to the portion where the suction port 56a and the exhaust port 57a are provided, water does not enter the suction port 56a and the exhaust port 57a. In addition, since the suction duct 56 and the exhaust duct 57 have a labyrinth (maze) shape, even if water enters the suction port 56a or the exhaust port 57a, Water does not reach the battery unit 22. In particular, the baffle plate portion 32 that prevents entry of foreign matter and water is provided in the middle of the intake / exhaust path formed by the suction duct 56 and the exhaust duct 57, so that water does not easily reach the battery unit 22 and has high maintainability. Bring. In addition, since the air filter 31 having magnetic shielding is incorporated in the suction / exhaust path, there is an advantage that a high magnetic shielding function (cutting off electromagnetic wave emission) can be secured together with the shielding property of the housing 23.
[0035]
The present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the spirit of the present invention. In the above-described embodiment, the example using the suction duct and the exhaust duct in which the suction port and the exhaust port are oriented in the vertical direction of the housing has been described. However, the suction duct and the exhaust duct are not limited to this. You may use a duct with a suction port or exhaust port facing to the side of it, or a structure with a suction duct or exhaust duct attached to the side of the housing instead of the top surface of the housing. It is only necessary that the mouth is disposed on the upper side from the tire center. Of course, the shape of each duct may be other than the U-shape. Further, in one embodiment, the suction port and the exhaust port are made to face each other close to the upper surface of the housing so that foreign matter and water do not enter from the suction port and the exhaust port. The suction port and the exhaust port arranged on the upper side of the tire center may be covered to prevent the entry of foreign matter and water. In one embodiment, the battery unit has a structure in which a cell module serving as a battery body is combined with a fan BOX, a junction BOX, a safety switch, and a battery management device. However, a battery unit having a structure other than this may be used. Furthermore, in one embodiment, the present invention is applied to a hybrid electric vehicle. However, the present invention is not limited to this, and the present invention may be applied to an electric vehicle that travels only by a motor device that operates with electric power of a battery unit.
[0036]
【The invention's effect】
As described above, according to the first and third aspects of the present invention, even when the battery unit built-in casing is attached to the vehicle body in an exposed state and runs through a puddle, the upper surface or side surface of the casing. Covers the tip of the suction duct or exhaust duct, and the tip of the suction duct or exhaust duct is above the center of the tire, so that the battery unit can withstand running in a puddle while ensuring good cooling performance. Can be secured.
[0037]
According to the invention described in claim 2, in addition to the above effects, even car wash, etc., high-pressure water directly be kicked is that there is either prevent the water from entering into the suction duct and exhaust duct There is an effect that can be.
[Brief description of the drawings]
FIG. 1 is a side view showing a battery device according to an embodiment of the present invention together with an electric vehicle equipped with the battery device.
FIG. 2 is a plan view of the same.
FIG. 3 is a perspective view showing an external appearance of the battery device.
FIG. 4 is an exploded perspective view in which the battery device is disassembled.
FIG. 5 is a cross-sectional view of the battery device taken along line XX in FIG. 3;
[Explanation of symbols]
1 ... Chassis frame (body frame)
3, 4 ... Front and rear wheels (tires)
21 ... Battery device 22 ... Battery unit 23 ... Case 30 ... Fan BOX (cooling device)
37 ... Cooling fan 56 ... Suction duct 56a ... Suction port 57 ... Exhaust duct 57a ... Exhaust port

Claims (3)

トラックである電気自動車のバッテリユニットの周囲を覆うと共に前記電気自動車のシャシフレームの側方に固定される筐体と、
前記バッテリユニットを冷却するために前記筐体内に外気を取入れる吸込ダクトと、
前記吸込ダクトから前記筐体内に取入れられて前記バッテリユニットを冷却し終えた前記外気を前記筐体の外部に排気する排気ダクトと、を備え、
前記吸込ダクトまたは前記排気ダクトは、その先端が前記筐体の上面または側面と近接対向させてあり、
前記吸込ダクトおよび前記排気ダクトは、その先端が前記電気自動車のタイヤの中心位置よりも上側に配置される
ことを特徴とする電気自動車のバッテリ装置。 A casing that covers the periphery of a battery unit of an electric vehicle that is a truck and is fixed to a side of the chassis frame of the electric vehicle ;
A suction duct for taking outside air into the housing to cool the battery unit;
An exhaust duct that exhausts the outside air taken into the housing from the suction duct and has cooled the battery unit to the outside of the housing, and
The suction duct or the exhaust duct has a tip that is in close proximity to the upper surface or side surface of the housing,
The suction duct and the exhaust duct are arranged such that tips of the suction duct and the exhaust duct are above the center position of the tire of the electric vehicle. 前記筐体の内部に配置されると共に前記筐体内部への吸気または前記筐体外部への排気を行う冷却ファンを更に備え、
前記吸込ダクトまたは前記排気ダクトは、前記筐体の上面から立位の姿勢で固定されると共に、コ字形のダクト形状をなして前記筐体の上面に前記先端が近接対向させてある
ことを特徴とする請求項１に記載の電気自動車のバッテリ装置。A cooling fan that is disposed inside the housing and performs intake to the inside of the housing or exhaust to the outside of the housing;
The suction duct or the exhaust duct is fixed in an upright posture from the upper surface of the casing, and has a U-shaped duct shape, and the tip is closely opposed to the upper surface of the casing. The battery device for an electric vehicle according to claim 1. 前記吸込ダクトまたは前記排気ダクトの先端は、前記シャシフレームの下面より上側かつ前記シャシフレームの上面より下側に配置される
ことを特徴とする請求項１に記載の電気自動車のバッテリ装置。 2. The battery device for an electric vehicle according to claim 1, wherein a leading end of the suction duct or the exhaust duct is disposed above the lower surface of the chassis frame and below the upper surface of the chassis frame.
JP2002307242A 2002-10-22 2002-10-22 Electric vehicle battery device Expired - Fee Related JP4039206B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002307242A JP4039206B2 (en) 2002-10-22 2002-10-22 Electric vehicle battery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002307242A JP4039206B2 (en) 2002-10-22 2002-10-22 Electric vehicle battery device

Publications (2)

Publication Number Publication Date
JP2004142524A JP2004142524A (en) 2004-05-20
JP4039206B2 true JP4039206B2 (en) 2008-01-30

Family

ID=32453762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002307242A Expired - Fee Related JP4039206B2 (en) 2002-10-22 2002-10-22 Electric vehicle battery device

Country Status (1)

Country Link
JP (1) JP4039206B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775546A1 (en) 2013-03-08 2014-09-10 Mitsubishi Jidosha Kogyo K.K. Exhaust structure of battery case

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5109560B2 (en) * 2007-09-28 2012-12-26 三菱自動車工業株式会社 Battery unit
JP5206266B2 (en) * 2008-09-17 2013-06-12 三菱自動車工業株式会社 Air conditioner for battery case for electric vehicle and manufacturing method thereof
JP5778885B2 (en) * 2009-03-27 2015-09-16 本田技研工業株式会社 Battery device for electric motorcycle
WO2014064738A1 (en) * 2012-10-25 2014-05-01 川崎重工業株式会社 Electric vehicle
JP6089980B2 (en) * 2013-06-03 2017-03-08 株式会社デンソー Battery cooling device
JP6400464B2 (en) * 2014-12-24 2018-10-03 株式会社東芝 Battery device
JP2016153279A (en) * 2015-02-20 2016-08-25 トヨタ自動車株式会社 Cooling unit of vehicular battery pack
WO2018033880A2 (en) 2016-08-17 2018-02-22 Shape Corp. Battery support and protection structure for a vehicle
JP6515073B2 (en) * 2016-08-24 2019-05-15 本田技研工業株式会社 Power supply unit case structure
JP6780370B2 (en) * 2016-08-26 2020-11-04 トヨタ自動車株式会社 Battery cooling device
JP6442451B2 (en) 2016-09-02 2018-12-19 本田技研工業株式会社 Case structure of power equipment unit
US11214137B2 (en) 2017-01-04 2022-01-04 Shape Corp. Vehicle battery tray structure with nodal modularity
JP2018144666A (en) * 2017-03-06 2018-09-20 株式会社竹内製作所 Working vehicle
US11211656B2 (en) 2017-05-16 2021-12-28 Shape Corp. Vehicle battery tray with integrated battery retention and support feature
US10483510B2 (en) 2017-05-16 2019-11-19 Shape Corp. Polarized battery tray for a vehicle
US10886513B2 (en) 2017-05-16 2021-01-05 Shape Corp. Vehicle battery tray having tub-based integration
WO2019055658A2 (en) 2017-09-13 2019-03-21 Shape Corp. Vehicle battery tray with tubular peripheral wall
US10661646B2 (en) 2017-10-04 2020-05-26 Shape Corp. Battery tray floor assembly for electric vehicles
EP3759761A4 (en) 2018-03-01 2021-09-08 Shape Corp. Cooling system integrated with vehicle battery tray
US11688910B2 (en) 2018-03-15 2023-06-27 Shape Corp. Vehicle battery tray having tub-based component
CA3110459C (en) * 2018-08-24 2024-06-18 Hexagon Purus North America Holdings Inc. Battery system for heavy duty vehicles
US11040610B2 (en) 2019-04-19 2021-06-22 Hexagon Purus North America Holdings Inc. Electric powertrain system for heavy duty vehicles
CA3136950A1 (en) 2019-04-19 2020-10-22 Hexagon Purus North America Holdings Inc. Electric front end accessory devices assembly
JP7011677B2 (en) * 2020-03-02 2022-01-26 本田技研工業株式会社 Battery unit
US11926207B2 (en) 2020-10-09 2024-03-12 Hexagon Purus North America Holdings Inc. Battery and auxiliary components for vehicle trailer
CA3205080A1 (en) 2020-12-11 2022-06-16 Hexagon Purus North America Holdings Inc. Trailer hookup breakaway mitigation systems and methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775546A1 (en) 2013-03-08 2014-09-10 Mitsubishi Jidosha Kogyo K.K. Exhaust structure of battery case

Also Published As

Publication number Publication date
JP2004142524A (en) 2004-05-20

Similar Documents

Publication Publication Date Title
JP4039206B2 (en) Electric vehicle battery device
JP4039207B2 (en) Electric vehicle battery device
JP6035967B2 (en) Battery pack for vehicles
JP5924187B2 (en) In-vehicle battery pack cooling system
JP6573680B2 (en) vehicle
US11318830B2 (en) Utility vehicle
JP2008044551A (en) Engine compartment cooling structure of off-road traveling four-wheel vehicle
JP3286634B2 (en) Power supply cooling device for hybrid vehicles
JP3284878B2 (en) Battery frame structure for electric vehicles
JPS6025287B2 (en) mobile vehicle
JPH11170854A (en) Tractor
JP2015067063A (en) Chemical solution scattering vehicle
JP3772549B2 (en) Battery cooling structure for electric vehicles
JPH09104239A (en) High power part mounting structure of electric automobile
JPH08310256A (en) Battery frame structure for electric vehicle
JP4248373B2 (en) Cab manufacturing method
WO2014064738A1 (en) Electric vehicle
JP3911724B2 (en) Battery cooling air discharge structure for electric vehicles
JP2012224278A (en) Cabin of tractor
JP2887730B2 (en) Outside air introduction device for cargo handling vehicles
US2196578A (en) Battery housing
JP6733303B2 (en) Construction machinery
JP2016084023A (en) vehicle
JP2003200728A (en) Mounting device of air-conditioner for tractor
JPH045122A (en) Engine type forklift cooling device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040908

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20061213

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20061219

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070219

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070605

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070730

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20071016

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071029

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101116

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees