Abstract: A four-notch flexible wearable ultra-wideband antenna fed by coplanar waveguide, includes a flexible base. A ground plane, a radiation patch and a feeder are arranged on the flexible base. There are several resonant tanks on the feeder and the radiation patch. The flexible base is made of insulating flexible material, and the feeder, the radiation patch and the ground plane are made of conductive flexible material. The four-notch flexible wearable ultra-wideband antenna fed by coplanar waveguide of the present application can be prepared by layer-by-layer assembly technology, spray printing or printed circuit board technology, and has the advantages of miniaturization and low profile, compact structure, convenient production, good conformality, wearable and other advantages.

Abstract: The present disclosure provides a battery module comprising: a battery pack having at least one single battery and at least one power splicer; a sampling module having a flexible circuit board, wherein at least one voltage sampling terminal and temperature sensor are disposed on the flexible circuit board, the temperature sensor being connected with the power splicer, the voltage sampling terminal being electrically connected with the power splicer; and a shell to enclose the battery pack and the sampling module.

Abstract: The present disclosure provides a battery module comprising: a battery pack having at least one single battery and at least one power splicer; a sampling module having a flexible circuit board, wherein at least one voltage sampling terminal and temperature sensor are disposed on the flexible circuit board, the temperature sensor being connected with the power splicer, the voltage sampling terminal being electrically connected with the power splicer; and a shell to enclose the battery pack and the sampling module.

Abstract: An explosion-proof device for a battery comprises: a vent formed in a battery shell of the battery; a valve core movably disposed in the vent to seal and open the vent; a support mounted on an outer wall of the battery shell; and an elastic element. One end of the elastic element is connected to the support and another end of the elastic element is connected to the valve core so as to normally push the valve core to seal the vent. Each of a power battery and a power battery module includes the explosion-proof device.