JP5938115B2 - バッテリーモジュール、バッテリー温度管理システム、および、該システムを備える車両 - Google Patents
バッテリーモジュール、バッテリー温度管理システム、および、該システムを備える車両 Download PDFInfo
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Description
この出願は、以下の出願の優先権と利益を主張する。
1)2010年12月29日に中華人民共和国国家知識産権局(SIPO)に出願された中国特許出願第201020691717.2号;および、
2)2010年12月31日に中華人民共和国国家知識産権局(SIPO)に出願された中国特許出願第201020697948.4号。
上記の列挙された特許出願は、それらの全体において参照することにより本願に組み入れられる。
高率放電中にバッテリーモジュール1により車両が駆動されると、バッテリーモジュール1の温度が連続的に上昇する。バッテリーモジュール1の温度が第1の所定値よりも高く、そのバッテリーモジュール1の温度を測定する図2に示された温度センサ42から制御ユニット(BMS)41が温度信号を受けると、冷却剤を冷却剤循環回路22へ圧送するために制御ユニット41が循環ポンプ221をONにし、冷却剤がバッテリーモジュール1を通じて流れる際にバッテリーモジュール1の熱が冷却剤へ伝達され、冷却剤が熱交換器21を通じて流れる際に冷却剤の熱が冷媒へ伝達され、その後、冷却剤は元のバッテリーモジュール1へと流入する。同時に、制御ユニット41は、圧縮器32と凝縮器ファン311をONにすると同時に、電磁弁34と蒸発器コントローラをONに切り換え、冷媒が蒸発器33および熱交換器21を通じて流れる。冷媒は、熱交換器21を通じて流れる際に冷却剤の熱を吸収し、その後、放熱のために元の凝縮器31へ流入する。凝縮器ファン311の作用を受けて、冷媒の熱は、冷媒が冷却されるように効果的に放散されうる。バッテリーモジュール1を冷却する必要がある一方で、車両のキャビンも冷却する必要がある場合には、車両のキャビンとバッテリーモジュール1を同時に冷却するために、制御ユニット41が、電磁弁34と蒸発器コントローラをONに切り換えるとともに圧縮器32をONにしてもよい。バッテリーモジュール1のみを冷却する必要があり、車両のキャビンを冷却する必要がない場合には、蒸発器コントローラがOFFに切り換えられてもよい。
単一セルの一貫性、特に温度一貫性は、バッテリーモジュール1の最も重要な性能のうちの1つである。単一セルの温度差が大きいと、高温の単一セルが急速に劣化または破損する場合がある。
バッテリーモジュール1と冷却剤との間の温度差が大きいと、バッテリーモジュール1内で復水が生じる場合があり、それによってバッテリーモジュール1の作動効率と寿命に影響が及ぶ。復水を回避するため、温度センサ42からの温度信号と第1の温度センサ43からの入力冷却剤温度信号との間の温度差が第4の所定値よりも大きいと、圧縮器32の回転速度、凝縮器ファン311の回転速度、および、電磁弁34の切り換え状態が制御ユニット41により制御されて、冷媒の温度が冷却剤の温度を調整するために制御され、および/または、冷却剤を加熱するために加熱装置5が制御され、それによりバッテリーモジュール1と冷却剤との間の温度差を減少させる。
バッテリーモジュール1の温度が第2の所定値よりも低いと、制御ユニット41は、温度センサ42から温度信号を受けた後、循環ポンプ221と加熱装置5をONにし、その結果、冷却剤がバッテリーモジュール1を通じて流れる際にバッテリーモジュール1が冷却剤によって加熱される。他の実施形態では、温度制御装置3が加熱機能も有しており、バッテリー温度管理システムに加熱装置5を設ける必要がない場合に、バッテリーモジュール1の温度が第2の所定値よりも低いと、制御ユニット41が循環ポンプ221と圧縮器32をONにし、その結果、冷却剤がバッテリーモジュール1を通じて流れる際にバッテリーモジュール1が冷却剤によって加熱される。
Claims (9)
- 冷却プレートと、該冷却プレート上に間隔を隔てて設けられる複数のセパレータプレートとを有する下側シェル体と、
前記複数のセパレータプレートの上部と密閉接続される上側カバーと、
前記複数のセパレータプレートの最前面および最後面とそれぞれ密閉接続されるフロントカバープレートおよびバックカバープレートとを備え、前記冷却プレート、前記上側カバー、前記フロントカバープレート、前記バックカバープレートおよび前記複数のセパレータプレートが、バッテリーコアおよび電解質をそれぞれ内部に受け入れるための複数の別個の密閉空間を形成するように密閉接続され、
主流チャネルが前記上側カバーおよび前記冷却プレートのそれぞれの内部に形成され、前記主流チャネルと流体連通する分岐流チャネルが前記セパレータプレートのそれぞれの内部に形成される、バッテリーモジュール。 - 前記冷却プレートが主出口チャネルを含み、該主出口チャネルの一端には冷却剤出口が形成され、前記上側カバーは、主入口チャネルを含むとともに、前記冷却剤出口の端部から離れて面する前記主入口チャネルの側に冷却剤入口を含み、
前記各セパレータプレートは、前記主入口チャネルおよび前記主出口チャネルと接続される分岐チャネルを含む、請求項1に記載のバッテリーモジュール。 - 前記冷却剤入口の断面積が前記冷却剤出口の断面積よりも約10〜20%小さい、請求項2に記載のバッテリーモジュール。
- 前記各密閉空間内に受け入れられる複数のバッテリーコアを更に備え、前記各バッテリーコアが前記密閉空間から延出される一対の電極端子を備え、該電極端子は、金属プレートを介して直列に、並列に、或いは、直列かつ並列に接続される、請求項1〜3いずれか1項に記載のバッテリーモジュール。
- 前記フロントカバープレートの前側に設けられて前記上側カバーおよび前記下側シェル体に固定されるフロントパネルと、前記バックカバープレートの後側に設けられて前記上側カバーおよび前記下側シェル体に固定されるバックパネルとを更に備え、最も外側の前記金属プレートを導出させるために一対の電極導出開口が前記フロントパネルに設けられる、請求項4に記載のバッテリーモジュール。
- 前記複数のセパレータプレートは、
前記冷却プレートの最も外側の側面に設けられる第1の外側プレートおよび第2の外側プレートと、
前記第1および第2の外側プレート間の少なくとも1つの中間プレートとを備え、前記外側プレートが前記中間プレートの厚さよりも大きい厚さを有する、請求項1〜5いずれか1項に記載のバッテリーモジュール。 - 前記フロントカバープレート、前記バックカバープレート、前記上側カバーおよび前記下側シェル体が、熱伝導性の材料から形成される、請求項1〜6いずれか1項に記載のバッテリーモジュール。
- 請求項1〜7いずれか1項に記載のバッテリーモジュールと、
冷却剤循環回路を介して前記バッテリーモジュールと接続される熱交換器と、
冷媒循環回路を介して前記熱交換器と接続される温度制御装置とを備え、
前記冷却剤循環回路内の冷却剤および前記冷媒循環回路内の冷媒は、前記熱交換器を介して互いに熱を交換し、前記冷却剤が前記バッテリーモジュールを通じて流れる際に、前記バッテリーモジュールが前記冷却剤によって冷却または加熱される、バッテリー温度管理システム。 - 請求項8に記載のバッテリー温度管理システムを備える車両。
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KR20130107354A (ko) | 2013-10-01 |
JP2014509436A (ja) | 2014-04-17 |
US10096869B2 (en) | 2018-10-09 |
KR101596107B1 (ko) | 2016-02-19 |
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