リチウムフォークリフトのバッテリー損失の検出と交換の判断基準

2026-06-24

リチウムフォークリフトのバッテリー損失の検出と交換の判断基準(図1)

リチウム電気フォークリフトは清潔で効率的な特徴で、倉庫物流業界でよく使われる運搬設備となっており、電池はその核心動力源として、定期的に損失状態に注目し、交換時期をタイムリーに判断し、作業効率を保障し、安全上の危険を低減する上で重要な役割を持っている。

まず、リチウムフォークリフトのバッテリー損失の一般的な毎日の検出方法を理解します。毎日の観察が最も基本的な方法です。操作中は、車両の走行速度と負荷性能に注意を払うことができます。同じ負荷と同じ道路条件で、車両の加速が大幅に遅くなり、登坂能力が低下すると、バッテリー容量がある程度減少している可能性があります。同時に、充電後の実際の航続距離を観察し、各フル充電後に連続して動作できる時間またはパレットの数を記録し、新しいバッテリーの状態または日常の通常の使用の平均レベルと連続して比較します。継続的かつ大幅な減少がある場合は、バッテリーの損失も示します。

日常の観察に加えて、基本的なパラメータ測定はバッテリーの状態をより直感的に理解することができます。キャリブレーションされたフォークリフトバッテリー検出器を使用して、単一セルのバッテリーとバッテリーパックの電圧と内部抵抗を測定できます。これは、バッテリーの損失を判断するための中心的な基礎です。測定するときは周囲温度に注意する必要があります。温度が高すぎたり低すぎたりして測定結果の精度に影響を与えないように、室温で約25℃の環境で行うのが最適です。通常の状況では、完全に充電して一定期間放置した後、単一セルのリン酸鉄リチウム電池の電圧は約3.2ボルトの動作電圧範囲に維持する必要があります。完全に充電され内部抵抗は電池の使用回数の増加に伴い徐々に上昇し、一般的に単節電池の内部抵抗が新しい電池の内部抵抗の1.5倍から2倍に達すると、電池の充放電性能は明らかに低下する。

次に、リチウムフォークリフトのバッテリーを交換する必要があるかどうかを判断する方法を明確にします。1つ目は、バッテリー寿命が日常の作業ニーズを満たせないほど低下していることです。たとえば、フルシフトの作業量をサポートできたはずですが、途中で1回充電してもコアハンドリングタスクを完了することは困難であり、合理的なメンテナンス後も改善できません。交換を検討する必要があります。2つ目は、充電時間が大幅に短縮されているが実際の放電時間が短い、または充電時間が長すぎる、または完全に充電できないなどの深刻な充電異常です。充電器と充電インターフェイスの故障の可能性を排除した後、基本的3つ目は、電圧や温度の異常なパフォーマンスです。充電または放電の過程で、単一セルのバッテリーまたはバッテリーパックの電圧が急激に上昇または下降するか、通常の負荷で温度が異常に上昇します。これらの状況は、作業効率に影響を与えるだけでなく、安全上の問題を引き起こす可能性があります。時間内に検出および交換する必要があります。

リチウム電池フォークリフトのバッテリーのメンテナンスは、過充電や過放電を避け、バッテリー表面を清潔で乾燥させ、バッテリー接続ケーブルが緩んでいないか定期的に確認するなど、損失速度をある程度遅らせることができますが、バッテリーの損失が交換基準に達すると、全体的な生産と運用に影響を与えないように、タイムリーに対処する必要があります。

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