JP6944553B2 - 鉛蓄電池の交換のためのシステム - Google Patents
鉛蓄電池の交換のためのシステム Download PDFInfo
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Description
この出願は、2019年1月15日に出願された、ゴルフカート用のリチウム電池に関する米国仮出願第62/792,630号の非仮出願である。
a.本発明の充電式電池モジュールは、図2、図3、及び図4で後述するように、メイン制御モジュール、直列及び並列の充電式電池ユニット、充電制御スイッチ、放電制御スイッチ、放電補助スイッチ、単一電池の電圧取得モジュール、電池モジュールの電流取得モジュール、及びポートコンデンサを含む。
b.充電式電池モジュールは、図2及び図4の説明で後述するように、出力ポートを介して、鉛蓄電池の充電器及び/又は鉛蓄電池負荷に通常接続される負荷に直接電気的に接続される。
c.メイン制御モジュールは、図4及び関連する説明により明らかになるように、C66のPWM出力及び電圧平滑化機能によって制御される放電モジュールの開閉により、出力ポートにおける鉛蓄電池の通常の動作電圧を有効にし、こうして元の鉛蓄電池システムの充電システムが充電式電池モジュールと共に動作するのを可能にする。
d.メイン制御モジュールは、図2及び関連する記載によって説明するように、直列負荷及びポート負荷の部分負荷によって放電補助スイッチの開閉を制御することにより、出力ポートにおける鉛蓄電池の通常の動作電圧を有効にし、元の鉛蓄電池システムが充電式電池モジュールを識別して受け入れるのを可能にする。
e.メイン制御モジュールは、図4及び関連する記載によって説明するように、充電式電池モジュールを模倣するようにPWMによる充電及び制御スイッチのオン及びオフを制御し、充電プロセス中の鉛蓄電池の電圧及び電流特性をシミュレートし、元の鉛蓄電池システムが充電式電池モジュールを識別して受け入れるのを可能にする。
f.充電式二次電池モジュールの放電制御スイッチは、図2に示されるようにダイオードと並列に接続される。充電モードでは、放電制御スイッチは切り離され、電池モジュールが充電されると、充電電流がダイオードに流れ、並列で使用される電池同士の間の相互絶縁が実現される。電流が設定されたダイオード動作電流制限(IREF)よりも大きい場合に、比較器U11Aが放電スイッチを開けるように動作して、ダイオード電流が範囲外に流れないようにする。電流がIREFより小さい場合に、放電制御スイッチは自動的にオフになり、並列に接続された電池モジュール同士の間での潜在的な相互充電を防ぐ。
g.充電式二次電池モジュールの充電制御スイッチは、図2に示されるようにダイオードと並列に接続される。放電モードでは、充電制御スイッチが切り離され、放電電流がダイオードに流れ、並列に接続された電池同士の間の相互絶縁が実現される。電池モジュールの放電電流がダイオード動作電流制限(IREF)のときよりも大きい場合に、比較器U11Bは放電スイッチをオンにして、ダイオード電流が許容範囲を超えないようにする。電流がIREF未満である場合に、充電制御スイッチは自動的にオフになり、並列に接続された電池モジュール同士の間での潜在的な放電を防ぐ。
電池セル電圧−各電池セルにおける電圧
電池セル温度−各電池セルの温度
外部電圧−電池の出力端子における電圧
電池セル電流−抵抗器206で測定された電流
Claims (20)
- 複数の出力端子を含むリチウム電池であって、当該リチウム電池は、
直列に接続された複数の電池セルと;
電池管理ユニットと、を有しており、
該電池管理ユニットは、
コントローラと、
前記複数の電池セル及び前記コントローラに接続された感知ユニットと、
第1のMOSFETと、該第1のMOSFETと並列に接続された第1のダイオードとを含み、前記コントローラに接続される充電制御ユニットと、
第2のMOSFETと、該第2のMOSFETと並列に接続された第2のダイオードとを含み、前記コントローラに接続される放電制御ユニットと、を含み、
前記感知ユニットは、前記リチウム電池の前記出力端子における第1の電圧を感知し、
該第1の電圧が第1の閾値電圧を超えると、前記第1のMOSFETはオンになり、
前記第1の電圧が前記第1の閾値電圧を下回ると、前記第1のMOSFETはオフになる、
リチウム電池。 - 前記第1の電圧が前記第1の閾値電圧を下回り、且つ前記第1のMOSFETがオフになるときに、小さな電流が前記第1のダイオードを流れる、請求項1に記載のリチウム電池。
- 前記感知ユニットは、前記リチウム電池の前記出力端子における第2の電圧を感知し、
前記第2の電圧が第2の閾値電圧を超えると、前記第2のMOSFETはオンになり、
前記第2の電圧が前記第2の閾値電圧を下回ると、前記第2のMOSFETはオフになる、請求項1に記載のリチウム電池。 - 前記第2の電圧が前記第2の閾値電圧を下回り、且つ前記第2のMOSFETがオフになるときに、小さな電流が前記第2のダイオードを流れる、請求項3に記載のリチウム電池。
- 電池管理システムと通信するステータス表示ユニットをさらに有しており、該ステータス表示ユニットは、前記電池管理システムの状態を表示する、請求項1に記載のリチウム電池。
- 電池管理システムと通信するユーザインターフェイスユニットをさらに有しており、該ユーザインターフェイスユニットは、ユーザからコマンドを受信する、請求項1に記載のリチウム電池。
- 前記ユーザから受信したコマンドによって、当該リチウム電池に、パルスモードで第1のシミュレートされた出力電圧を出力させる、請求項6に記載のリチウム電池。
- 前記ユーザから受信したコマンドによって、前記第1のシミュレートされた出力電圧の周波数を変更する、請求項7に記載のリチウム電池。
- 前記コントローラに接続されたエミュレータMOSFETをさらに有しており、前記コントローラは、前記放電制御ユニットと前記充電制御ユニットとの両方がオフにされるときに、パルスモードで前記エミュレータMOSFETをオン及びオフにする、請求項1に記載のリチウム電池。
- 前記パルスモードの周波数は、前記コントローラによって調整される、請求項9に記載のリチウム電池。
- タイマーをさらに有しており、該タイマーは、前記エミュレータMOSFETが前記コントローラによってオン及びオフにされると開始され、前記コントローラは、前記タイマーが終了するときに、前記エミュレータMOSFETのオン及びオフを停止する、請求項9に記載のリチウム電池。
- 前記感知ユニットは、各電池セルの温度及び電圧を感知する、請求項1に記載のリチウム電池。
- 鉛蓄電池をエミュレートするために、複数の電池セル、コントローラ、感知ユニット、第1のMOSFETを含む充電制御ユニット、及び第2のMOSFETを含む放電制御ユニットを有するリチウム電池の方法であって、当該方法は、
前記感知ユニットにより、前記リチウム電池の出力端子における第1の電圧を感知するステップと、
前記充電制御ユニットにより、前記第1の電圧が第1の閾値電圧を超えると、前記第1のMOSFETをオフにするステップと、
前記充電制御ユニットにより、前記第1の電圧が前記第1の閾値電圧を下回ると、前記第1のMOSFETをオンにするステップと、を含む、
方法。 - 前記感知ユニットにより、前記リチウム電池の出力端子における第2の電圧を感知するステップと、
前記放電制御ユニットにより、前記第2の電圧が第2の閾値電圧を超えると、前記第2のMOSFETをオンにするステップと、
前記放電制御ユニットにより、前記第2の電圧が前記第2の閾値電圧を下回ると、前記第2のMOSFETをオフにするステップと、をさらに含む、請求項13に記載の方法。 - パルスモードで出力電圧を出力するステップをさらに含む、請求項14に記載の方法。
- ユーザインターフェイスユニットにより、コマンドを受信するステップと、
前記コントローラにより、前記パルスモードでの前記出力電圧の出力を停止するステップと、をさらに含む、請求項15に記載の方法。 - ユーザインターフェイスユニットにより、コマンドを受信するステップと、
前記コントローラにより、前記出力電圧の前記パルスモードの周波数を変更するステップと、をさらに含む、請求項15に記載の方法。 - 前記感知ユニットにより、前記複数の電池セルからステータス情報を受信するステップと、
ステータス表示ユニットにより、前記ステータス情報を表示するステップと、をさらに含む、請求項13に記載の方法。 - 前記パルスモードで前記出力電圧が開始されたときに、タイマーを開始するステップと、
該タイマーが終了すると、前記パルスモードの前記出力電圧を停止するステップと、をさらに含む、請求項15に記載の方法。 - 各電池セルの温度及び電圧を感知するステップをさらに含む、請求項13に記載の方法。
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