Abstract: A biomass burner includes a hopper, a ventilating chamber, a U-shaped fire box, a feeding cylinder including an output end, an auger, a feeding motor including a driving wheel, an ignition device, an ignition motor, a ventilation plate, a first poking device, a second poking device, a first poking motor configured to drive the first poking device, a second poking motor configured to drive the second poking device, a first fixed plate, and a second fixed plate. The hopper is disposed below the feeding cylinder. The feeding cylinder is disposed through the ventilating chamber and the output end of the feeding cylinder extends into the U-shaped fire box. The auger is disposed in the feeding cylinder and is driven by the feeding motor; one end of the auger is provided with a driven gear, and the driven gear is meshed with the driving wheel of the feeding motor.

Abstract: An electrode plate includes a current collector which includes an insulating layer, a first conductor layer and a second conductor layer disposed on two sides of the insulating layer respectively, and a conductive connector. The outward side of the first conductor layer is provided with a first blank region and a first active material coating layer. The outward side of the second conductor layer is provided with a second blank region and a second active material coating layer. The first blank region is provided with a folded region, and the second blank region covers the first blank region. One end of the conductive connector extends out of the folded region to connect the first blank region. The other end of the conductive connector is connected to the second blank region. The conductive connector is adapted to electrically connect the first blank region and the second blank region.

Abstract: Provided is a composite current collector. The composite current collector includes a support layer, a first conductor layer, a second conductor layer, and a welding region. The support layer is made of a polymer. The first conductor layer is disposed on a first side of the support layer. The second conductor layer is disposed on a second side of the support layer. In the welding region, no polymer is provided between the first conductor layer and the second conductor layer. A preparation method and a lithium ion battery are further provided.

Abstract: A biomass burner includes a hopper, a ventilating chamber, a U-shaped fire box, a feeding cylinder including an output end, an auger, a feeding motor including a driving wheel, an ignition device, an ignition motor, a ventilation plate, a first poking device, a second poking device, a first poking motor configured to drive the first poking device, a second poking motor configured to drive the second poking device, a first fixed plate, and a second fixed plate. The hopper is disposed below the feeding cylinder. The feeding cylinder is disposed through the ventilating chamber and the output end of the feeding cylinder extends into the U-shaped fire box. The auger is disposed in the feeding cylinder and is driven by the feeding motor; one end of the auger is provided with a driven gear, and the driven gear is meshed with the driving wheel of the feeding motor.