Abstract: The present invention relates to a rechargeable battery device of a cordless power tool. The rechargeable battery device provides a power source for a cordless power tool. It is mainly based on the original one, and the Universal Serial Bus (USB) specification of the power transmission connection port is added as a connection interface, so that the rechargeable battery device can be used as a portable charging device (power bank). Since the connectors and wires of the USB standard have been widely used, easy to obtain and have high versatility, the environmental burden can be greatly reduced, and the application and practicability of the rechargeable battery device can be improved.

Abstract: A battery charging cable can be connected to a power supplying device and supply electricity to, and thereby charge, the battery of another device when the battery is low in power. The battery charging cable includes a USB Type-C connector at one end and a positive-electrode clamp and a negative-electrode clamp at the other end, wherein the clamps can be respectively clamped to the positive and negative electrodes of the battery of a device to be charged. With the battery charging cable supporting a USB Power Delivery protocol, and the USB Type-C connector configured to provide a relatively high voltage and power, the battery charging cable provides overload protection and has great power transmission performance.

Abstract: A battery charging cable can be connected to a power supplying device and supply electricity to, and thereby charge, the battery of another device when the battery is low in power. The battery charging cable includes a USB Type-C connector at one end and a positive-electrode clamp and a negative-electrode clamp at the other end, wherein the clamps can be respectively clamped to the positive and negative electrodes of the battery of a device to be charged. With the battery charging cable supporting a USB Power Delivery protocol, and the USB Type-C connector configured to provide a relatively high voltage and power, the battery charging cable provides overload protection and has great power transmission performance.

Abstract: The present invention discloses a battery-capacitor-type charging and discharging system which includes a supply module, a capacitor module and a switcher module. The supply module is a power provider and is connected with the capacitor module parallel. The capacitor module stores the electricity, and an end of the capacitor module is connected with the supply module parallel; whereas, the other end of the capacitor module is connected with an external device. The switcher module is a protector which includes a first conduction end and a second conduction end. The first conduction end is connected between the supply module and the capacitor module, and the second conduction end is connected between the capacitor module and the external device. The supply module provides a voltage which is larger than that of the capacitor module to charge, thereby forming a system which can charge and discharge by itself.

Abstract: The present invention provides an anti-explosion mechanism against battery overheating. The power module includes one or a plurality of battery cells, a circuit board, a control device and one or a plurality of temperature sensors connected to one another. The anti-explosion mechanism against battery overheating is characterized that, the battery cell is provided with a temperature sensor and is connected to the control device. When the operating temperature of the battery cell reaches a predetermined temperature, such information is transmitted to the control device to perform a power interruption operation. Thus, the life cycle of a battery is protected, and anti-explosion and anti-fire effects are provided, thereby achieving reminding and protection effects in the application of the battery.

Abstract: A power system comprises: a power unit; a portable electrical tool having a power line, which is electrically connected to the power unit; a power-store device being electrically connected to the power unit; wherein the power unit provides power to the portable electrical tool and the power-store device, the power-store device stores the power simultaneously, so that the power-store device provides the power to the portable electrical tool while in the condition of the power line being not connected to the power unit, such as outdoor works.