Abstract: The present disclosure provides an energy storage power supply. The energy storage power supply includes a shell and a lighting device. The shell is provided with a lighting chamber. The lighting chamber is provided with a first light outlet. The lighting device includes a light-emitting component and a condensing lens. The lighting device is arranged in the lighting chamber. A light-emitting surface of the light-emitting component is arranged in a manner of facing the condensing lens and the first light outlet. The condensing lens is configured to condense light emitted by the light-emitting component to form a small light beam with a long illumination distance. Through the above structure, when a user uses the energy storage power supply in the open air or other occasions, purposes of a longer illumination distance and a clearer viewing field, which greatly improves the practicality and user experience of the energy storage power supply.

Abstract: The present disclosure discloses a driving circuit of a hand warmer and a hand warmer. The driving circuit of a hand warmer includes a charging control circuit, a heating control unit and a temperature regulating circuit. The temperature regulating circuit is configured to electrically connect the battery and the heating control unit, and includes a main control unit and a stepless regulating device electrically connected with the main control unit, the stepless regulating device is configured to be operated by a user to generate a stepless regulating signal within a preset regulating range. The main control unit is configured to receive the stepless regulating signal to generate a heating control signal and output the heating control signal to the heating control unit, so that the heating control unit outputs a driving signal according to the heating control signal to drive the heating element to heat within a preset temperature range.

Abstract: The present disclosure provides a control circuit for a fan. The control circuit for a fan including a fan head equipped with a first motor and fan blades connected to the first motor. The control circuit includes an MCU, a stepless regulation circuit and a first driving circuit both connected to the MCU. The stepless regulation circuit includes a stepless regulator for user operation. The first driving circuit is also electrically connected to the first motor, the stepless regulation circuit sends back corresponding electrical signals to the MCU based on user operation of the stepless regulator, and the MCU controls the power output of the first driving circuit to the first motor based on the electrical signal feedback from the stepless regulation circuit, which adjusts the power output to the first motor to adjust the speed of fan blades.

Abstract: The present disclosure provides a combined type hand warmer, including a first hand warmer unit and a second hand warmer unit; a first connection part is arranged on the first hand warmer unit, and a second connection part is arranged on the second hand warmer unit; the first connection part is detachably connected to the second connection part such that the first hand warmer unit and the second hand warmer unit are combined into a whole; and when a user needs to warm two hands/multiple body parts, the first hand warmer unit can be separated from the second hand warmer unit, and the first hand warmer unit and the second hand warmer unit can be respectively used for warming the two hands/multiple body parts.