Abstract: Lithium-ion battery charging method for correcting and compensating voltage, when it is charged to limited charge voltage of the battery, the battery stops charging, or start charging by constant-voltage charging and won't stop charging until the charging current is lower than 50%-99.99% of the current before constant-voltage charging; the limited charge voltage of the battery positive and negative electrodes is set as 3U0?US?USO; the battery would be rapidly charged and charged close to saturation, and have better cycle life than the battery charged by constant-current and constant-voltage charging method of the same charging rate; or with the same cycle frequency, the battery charged with the charging method of the present invention would have larger discharge capacity.

Abstract: Lithium-ion battery charging method for correcting and compensating voltage, when it is charged to limited charge voltage of the battery, the battery stops charging, or start charging by constant-voltage charging and won't stop charging until the charging current is lower than 50%-99.99% of the current before constant-voltage charging; the limited charge voltage of the battery positive and negative electrodes is set as 3U0?US?USO; the battery would be rapidly charged and charged close to saturation, and have better cycle life than the battery charged by constant-current and constant-voltage charging method of the same charging rate; or with the same cycle frequency, the battery charged with the charging method of the present invention would have larger discharge capacity.

Abstract: A method includes providing battery cells for secondary batteries. The battery cells are charged to a fixed voltage (Vc). The battery cells are laid aside in an open circuit for a preset self-discharge time period (t). A voltage (Vt) is measured after the period t for each battery cell. A voltage difference (?V) is determined for each battery cell, wherein ?V=Vc?Vt. A self-discharge rate (?) is measured for each ?V. A self-discharge current (Ic) is calculated during the period t, wherein Ic is a function of ?. The Ic is curve-fitted to the ?V for each battery cell to obtain an Ic??V equation. The Ic is divided into h number of grades. The Ic??V equation is utilized to determine h number of grades of ?V associated with each grade of Ic. Battery cells are selected having a same grade of Ic and ?V for matching.

Abstract: A method includes providing battery cells for secondary batteries. The battery cells are charged to a fixed voltage (Vc). The battery cells are laid aside in an open circuit for a preset self-discharge time period (t). A voltage (Vt) is measured after the period t for each battery cell. A voltage difference (?V) is determined for each battery cell, wherein ?V=Vc?Vt. A self-discharge rate (?) is measured for each ?V. A self-discharge current (Ic) is calculated during the period t, wherein Ic is a function of ?. The Ic is curve-fitted to the ?V for each battery cell to obtain an Ic??V equation. The Ic is divided into h number of grades. The Ic??V equation is utilized to determine h number of grades of ?V associated with each grade of Ic. Battery cells are selected having a same grade of Ic and ?V for matching.

Abstract: In the present invention, a method and system for equalizing and matching lithium secondary batteries belong to the field of secondary batteries. A lithium secondary battery is divided into more than one grade according to the magnitude of a consumable current Ic, the number of grades is h, the lithium secondary battery is divided into grades corresponding to the consumable current according to the magnitude of a voltage difference ?V, a battery cell at a grade same as that of the consumable current and the voltage difference is selected for matching, so the range of the consumable current of the battery group can be controlled.

Abstract: The present invention provides a quick charge method belonging to the field of the battery and particularly relates to a quick charge method for lithium ion battery and polymer lithium ion battery.

Abstract: In the present invention, a method and system for equalizing and matching lithium secondary batteries belong to the field of secondary batteries. A lithium secondary battery is divided into more than one grade according to the magnitude of a consumable current Ic, the number of grades is h, the lithium secondary battery is divided into grades corresponding to the consumable current according to the magnitude of a voltage difference ?V, a battery cell at a grade same as that of the consumable current and the voltage difference is selected for matching, so the range of the consumable current of the battery group can be controlled.

Abstract: The present invention provides a quick charge method belonging to the field of the battery and particularly relates to a quick charge method for lithium ion battery and polymer lithium ion battery.