Как определить потерю заряда литиевого аккумулятора 18650

Как определить потерю заряда литиевого аккумулятора 18650

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Как обнаружить потерю заряда литиевого аккумулятора 18650?
1. Потребляемая мощность батареи: напряжение на батарее не растет, а емкость уменьшается. Измерьте напряжение непосредственно вольтметром, если напряжение на батарее 18650 ниже 2,7 В или напряжение отсутствует. Это означает, что батарея или батарейный блок повреждены. Нормальное напряжение составляет 3.0V ~ 4.2V (обычно батарея 3.0V отключает напряжение, батарея 4.2V полностью заряжена, а некоторые имеют напряжение 4.35V).
2. Если напряжение аккумулятора ниже 2,7 В, вы можете использовать зарядное устройство (4,2 В) для зарядки аккумулятора. Через десять минут, если напряжение аккумулятора восстановилось, можно продолжить зарядку до тех пор, пока зарядное устройство не покажет, что он полностью заряжен, а затем проверить полное напряжение.
Если напряжение при полной зарядке составляет 4,2 В, это означает, что батарея в порядке. Возможно, при последнем использовании потребление энергии было слишком большим, и батарея отключилась. Если напряжение полного заряда намного ниже 4,2 В, это означает, что батарея повреждена. Если батарея использовалась в течение длительного времени, можно судить о том, что срок ее службы истек и емкость в основном исчерпана. ее следует заменить. В принципе, починить ее невозможно. Ведь литиевые батареи имеют срок службы, не бесконечный.
3. Если при измерении литиевого аккумулятора 18650 на нем отсутствует напряжение, то на данный момент возможны две ситуации. Одна из них заключается в том, что батарея изначально была хорошей, а причиной ее разрядки стало длительное хранение без питания. У такого аккумулятора есть определенная вероятность восстановления. Как правило, она активируется импульсом литиевой батареи. С помощью прибора (прибор для зарядки и разрядки литиевых батарей) можно зарядить батарею несколько раз за короткий промежуток времени. Как правило, стоимость ремонта невелика, и лучше купить новый. Другой вариант - батарея полностью изношена, сепаратор батареи разрушен, а положительный и отрицательный электроды замкнуты. Починить такое невозможно, просто купите новый.
Принцип метода ремонта литиевых аккумуляторов 18650:
1. Металлическая поверхность литиевого аккумулятора 18650, который использовался в течение длительного времени, в определенной степени окисляется, что приводит к плохому контакту между аккумулятором мобильного телефона и мобильным телефоном, и время использования литиевого аккумулятора сокращается. Ржавые вещества улучшают контакт аккумулятора с телефоном.
2. Низкая температура может изменить электролит внутри литиевого аккумулятора и способствовать химической реакции только что замороженного аккумулятора. Использование литиевых батарей фактически представляет собой процесс зарядки и разрядки. В это время отрицательные и положительные заряды в батарее сталкиваются друг с другом. Когда литиевая батарея помещается в среду с низкой температурой, микроструктура литиевой пленки на поверхности литиевой батареи и электролита, а также их границы раздела значительно изменяются, что приводит к временному бездействию внутри батареи и уменьшению тока утечки. Поэтому после повторной зарядки время работы телефона в режиме ожидания увеличится.
Срок службы литиевого аккумулятора составляет около 600 циклов. Если заряжать слишком часто, тепловое движение молекул постепенно разрушит микроструктуру внутренней молекулярной структуры, и эффективность хранения электрических зарядов будет постепенно снижаться.

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