低温環境におけるバランスの取れた重いリチウム電気フォークリフトの航続距離の減衰を改善する方法

2026-06-26

低温環境におけるバランスの取れた重いリチウム電気フォークリフトの航続距離の減衰を改善する方法(図1)

バランスの取れた重いリチウム電気フォークリフトの航続距離に及ぼす低温環境の影響

低温環境はリチウム電池の電気化学的活性に大きく影響し、電解液の粘度は温度が下がるにつれて上昇し、イオン伝導効率が低下し、電池の利用可能な容量が減少する。同時に、電池の内部抵抗は温度が下がるにつれて増加し、作業中に内部抵抗を克服するためにより多くの電力を消費し、航続距離の減衰をさらに悪化させる。また、低温は動力系統の運転効率に影響し、モーターとコントローラーの作業負荷が増加し、間接的に航続距離が短くなる。

バランスの取れた重いリチウム電気フォークリフトの低温航続距離の減衰を改善する方法

最適化されたバッテリウォームアップ戦略

低温運転の前に、車載予熱システムで電池を予熱処理して、電池温度を適切な作業区間、通常は10℃から30℃の間に上げることができる。予熱過程は低電力恒温加熱方式を採用して、急速な昇温が電池構造に損傷を与えないようにする。長期駐車のフォークリフトは保温条件のある倉庫に置くことができ、電池自体の温度損失を減らす。

パワーシステムパラメータの調整

低温環境の特性に応じて、モーターとコントローラーの動作ロジックを最適化し、トルク出力曲線を調整して、大電流放電シーンの発生を回避します。たとえば、始動時や重負荷時には、瞬間的なトルクピークを適切に低減し、無駄な電力消費を減らします。同時に、エネルギー回収システムを適応および調整して、ブレーキプロセス中のエネルギー回収効率を向上させ、バッテリー寿命をさらに補完することができます。

日常のメンテナンスを強化する

リチウム電池の定期的な状態検査を実施し、電池の極柱の表面の酸化物を清掃して、スムーズな電流伝導を確保します。バッテリーパックの断熱層が無傷であるかどうかを確認し、損傷が発生した場合は、低温環境での熱損失を減らすために、時間内に修理または交換してください。さらに、バッテリー管理システムが残りの容量を正確に識別し、容量の誤判断による異常なバッテリー寿命を回避できるように、バッテリーは仕様に従って定期的に充放電キャリブレーションする必要があり

作業フローを合理的に計画する

低温運転シナリオでは、操作ルートを合理的に計画し、不必要な往復運転を減らし、無効なエネルギー消費を減らします。頻繁な起動と停止、急加速、急ブレーキなどの操作を避け、スムーズな操作リズムを維持し、電力システムの負荷変動を減らすようにしてください。同時に、フォークリフトの休憩時間を作業ニーズに応じて合理的に調整し、バッテリーを間欠期間中に適切な温度に保ち、継続的な低温操作による性能低下を回避することができます。

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