2026-06-22

Analyse approfondie : durée de vie du cycle de la batterie au lithium et loi d'atténuation

Analyse approfondie : durée de vie du cycle de la batterie au lithium et loi datténuation(Figure1)

Avec la popularité des chariots élévateurs lithium-ion dans l'entreposage, la logistique et d'autres scénarios, la durée de vie et l'atténuation du cycle des batteries sont devenues les principaux indicateurs de coûts auxquels les utilisateurs prêtent attention. Comprendre les lois pertinentes peut aider efficacement les utilisateurs à utiliser les batteries de manière rationnelle et à réduire les coûts d'exploitation à long terme.

La durée de vie du cycle de la batterie de chariot élévateur au lithium a des normes de jugement claires de l'industrie. Habituellement, lorsque la capacité utilisable réelle de la batterie tombe à 80 % de la capacité nominale, le nombre total de cycles de charge et de décharge complets complétés auparavant est la durée de vie nominale de la batterie. Le cycle de charge et de décharge complet fait ici référence au processus complet de décharge de la batterie de l'état de charge complète à la tension de coupure définie, puis de la remplir jusqu'à la tension nominale. La charge et la décharge superficielles en utilisation quotidienne ne seront pas comptées comme un cycle unique, de sorte que le nombre total de cycles en utilisation réelle est souvent supérieur à la valeur nominale de base du produit.

Dans différents scénarios d'utilisation, le taux d'atténuation des batteries de chariot élévateur lithium-ion varie considérablement. Dans les scénarios de fonctionnement conventionnels, la température ambiante est maintenue entre 10 degrés Celsius et 30 degrés Celsius, la charge de fonctionnement unique ne dépasse pas 70 % de la charge nominale et la profondeur de décharge unique est contrôlée à environ 60 %. Le taux d'atténuation de la batterie restera à un faible. Pour 100 cycles complets, la diminution de capacité est généralement comprise entre 0,3 % et 0,5 %. Si elle se trouve dans un environnement de fonctionnement extrême pendant une longue période, comme la température ambiante est inférieure à moins 10 degrés Celsius ou supérieure à 45 degrés Celsius, ou si elle est souvent déchargée avec une charge complète et un courant important, et la batterie est vidée à la tension de coupure à chaque fois avant la charge, le taux d'atténuation de la batterie augmentera de 2 fois. Dans les environnements à haute température, la consommation d'électrolyte interne peut également augmenter, ce qui raccourcit encore la durée de vie réelle de la batterie.

Maîtrisez les méthodes d'utilisation et de maintenance raisonnables, qui peuvent retarder efficacement l'atténuation de la batterie et prolonger la durée de vie du cycle. Dans la gestion quotidienne de la charge et de la décharge, essayez d'éviter de vider complètement la charge du booster de batterie et de reconstituer la batterie à temps après l'opération. Lorsque la batterie est inactive pendant une longue période, maintenez la puissance entre 40 % et 60 %. Effectuez une charge et une décharge complètes tous les 1 à 2 mois, et calibrez les paramètres de capacité de la batterie. Essayez d'éviter les environnements de température extrême pendant le fonctionnement. Par temps de température élevée ou basse, la durée de fonctionnement unique peut être raccourcie de manière appropriée pour éviter que la batterie ne soit surchauffée ou surrefroidie pendant une longue période. Vérifiez le contact de l'interface de la batterie tous les trimestres pendant l'entretien quotidien pour éviter une décharge anormale causée par un mauvais contact, nettoyez la poussière et l'huile sur la surface de la batterie à temps et gardez le canal de dissipation thermique dégagé, ce qui peut également réduire la probabilité d'atténuation anormale.

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