Abstract: A protection structure for preventing thermal dissipation and thermal runaway diffusion in battery system is provided. The protection structure includes a battery module casing and at least one composite heat conduction plate. There is a plurality of unit cells disposed in the battery module casing. The composite heat conduction plate is located within the battery module casing, contacted with the battery module casing, and sandwiched between at least two of the unit cells as a heat transmission medium between the cells and the casing to control heat transmission among the cells. The composite heat conduction plate is a multilayer anisotropic heat conduction structure constituted by at least one heat conduction layer and at least one heat insulation layer.

Abstract: A lithium ion secondary battery includes LiFePO4 as a major component of the positive electrode active material. In order to implement the high rate capability with 10 C/1 C rate larger than 80%, the invention designs a positive electrode on a current collector with a ratio (A/t) of coating area to coating thickness greater than 1.2×106 (mm) and uses more than one tab on the current collector. The design of the invention can be applied to other active materials with low conductivity as the positive electrode for lithium ion battery.

Abstract: A protection structure for preventing thermal dissipation and thermal runaway diffusion in battery system is provided. The protection structure includes a battery module casing and at least one composite heat conduction plate. There is a plurality of unit cells disposed in the battery module casing. The composite heat conduction plate is located within the battery module casing, contacted with the battery module casing, and sandwiched between at least two of the unit cells as a heat transmission medium between the cells and the casing to control heat transmission among the cells. The composite heat conduction plate is a multilayer anisotropic heat conduction structure constituted by at least one heat conduction layer and at least one heat insulation layer.

Abstract: A lithium ion secondary battery includes LiFePO4 as a major component of the positive electrode active material. In order to implement the high rate capability with 10 C/1 C rate larger than 80%, the invention designs a positive electrode on a current collector with a ratio (A/t) of coating area to coating thickness greater than 1.2×106 (mm) and uses more than one tab on the current collector. The design of the invention can be applied to other active materials with low conductivity as the positive electrode for lithium ion battery.

Abstract: A lithium ion secondary battery includes LiFePO4 as a major component of the positive electrode active material. In order to implement the high rate capability with 10C/1C rate larger than 80%, the invention designs a positive electrode on a current collector with a ratio (A/t) of coating area to coating thickness greater than 1.2×106 (mm) and uses more than one tab on the current collector. The design of the invention can be applied to other active materials with low conductivity as the positive electrode for lithium ion battery.

Abstract: A charging method for charging a battery module. The battery module receives a different charge voltage according to the voltage or current status of the battery module. The charge voltage is decreased to increase battery power when any battery voltage level is greater than a preset voltage. A charging system thereof is also disclosed.

Abstract: A lithium ion secondary battery includes LiFePO4 as a major component of the positive electrode active material. In order to implement the high rate capability with 10C/1C rate larger than 80%, the invention designs a positive electrode on a current collector with a ratio (A/t) of coating area to coating thickness greater than 1.2×106 (mm) and uses more than one tab on the current collector. The design of the invention can be applied to other active materials with low conductivity as the positive electrode for lithium ion battery.

Abstract: A charging method for charging a battery module. The battery module receives a different charge voltage according to the voltage or current status of the battery module. The charge voltage is decreased to increase battery power when any battery voltage level is greater than a preset voltage. A charging system thereof is also disclosed.