Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Limited.

Other

Halo Microelectronics Co., Ltd.

Fan Zhang

Jun Lei

Yunfeng Wang

Deyong Jiang

Shufeng Huang

Wenhua Liu

Lutian Zeng

Songnan Yang

Shuang Han

Feng Peng

Yuehong Qu

Jaeeun Byun

Wenkai Mei

Zhanfeng Xiao

Jianxin Wu

Weiming Huang

The present disclosure provides a float valve motion detection device, a pot cover assembly and a pressure cooking appliance, the float valve motion detection device comprising: a float valve, a hollow inductance coil and a detection circuit. A valve core of the float valve is made of materials having permeability unequal to that of air. When the valve core is pushed by the pressure in a pot from a first position to a second position, the volume of the valve core in the hollow inductance coil changes, which changes the inductance of the hollow inductance coil. A detection circuit determines the position of the valve core by means of detecting the change in the inductance of the hollow inductance coil so as to determine whether it is safe to uncover at the current time.

Float valve motion detection device, pot cover assembly and pressure cooking appliance

The pot cover assembly includes a pot cover body and a spill-proof detection device. The spill-proof detection device is a capacitive detection device and it is provided on the pot cover body. At least a lower surface of the spill-proof detection device forms a detection plane and a capacitance value of the spill-proof detection device is changed as a function of a contact medium of the detection plane.

Pot cover assembly

A wireless power supply system for a cooking appliance includes a power transmission device and a power reception device. The power transmission device includes a transmission coil and a coil driving circuit coupled to the transmission coil and configured to drive the transmission coil to generate an alternating electromagnetic field and vary a resonance voltage of the transmission coil. The power reception device includes a reception coil matching the transmission coil and configured to sense the alternating electromagnetic field to generate a varying induction voltage signal that varies according to the varying resonance voltage and a communication and demodulation circuit configured to demodulate the varying induction voltage signal to output demodulated data.

Wireless power supply system for cooking appliance and cooking appliance

A charging and discharging circuit includes a first conversion circuit and a second conversion circuit. The input terminal of the first conversion circuit is used to connect an external power supply. The output terminal of the first conversion circuit is connected to the input terminal of the second conversion circuit and the first terminal of a battery pack, and the second terminal of the battery pack is grounded. N battery cells have N-1 common nodes. Each common node is connected to a corresponding output terminal of the second conversion circuit. In the embodiment of the present application, the second conversion circuit effectively 'transfers' the excess charge on the cell with a higher battery voltage in the battery pack to the cell with a lower voltage through the uneven distribution of the charging current.

Battery charging and discharging circuit and terminal devices

The present disclosure provides a method for controlling a power of an electromagnetic cooking appliance and an electromagnetic cooking appliance. The electromagnetic cooking appliance includes a first coil disk and a second coil disk. Each of the first coil disk and the second coil disk corresponds to an independent resonance circuit. After obtaining a target power of the electromagnetic cooking appliance, a heating period of the electromagnetic cooking appliance is determined based on the target power, each heating period including at least one first heating time period and at least one second heating time period. The first coil disk is controlled to heat in the first heating time period, and the second coil disk to heat in the second heating time period, such that the first coil disk and the second coil disk are heated alternately to reduce an interference of harmonic current and voltage flicker.

Electromagnetic cooking appliance and method for controlling power of the same

Provided are an overcurrent and overvoltage protection circuit, an electromagnetic induction type wireless power supply system and a cooking appliance. The overcurrent and overvoltage protection circuit includes a current detecting unit that outputs a current detection value by detecting a resonance current of a resonant transmitting unit a voltage detecting unit that outputs a voltage detection value by detecting a resonance voltage of the resonant transmitting unit and a main control unit including a current detecting end and a voltage detecting end, and the current detecting end is connected to an output end of the current detecting unit, the voltage detecting end is connected to an output end of the voltage detecting unit, and when the current detection value exceeds a preset current limit and/or the voltage detection value exceeds a preset voltage limit.

Overcurrent and overvoltage protection circuit, electromagnetic induction type wireless power supply system and cooking appliance

A power supply system includes a wireless power supply end and a wireless receiving end. The wireless receiving end includes a resonant receiving component and a rectifying and voltage-stabilizing component that is connected to the resonant receiving component to output a voltage-stabilized power supply (VCC). A load sudden-change protection circuit includes an overvoltage protection component and an under-voltage protection component that are each respectively connected to the voltage-stabilized power supply and a load. The overvoltage protection component turns on the load when the voltage of the voltage-stabilized power supply is higher than a first preset voltage due to sudden turn-off of the load. The under-voltage protection component turns off the load when the voltage of the voltage-stabilized power supply is lower than a second preset voltage due to sudden turn-on of the load.

Electromagnetic induction type wireless power supply system and load sudden-change protection circuit thereof

The present disclosure provides a wireless power supply communication circuit for an electric cooking pot, an electric cooking pot and a method thereof. The electric cooking pot comprises a pot body, an upper cover and the wireless power supply communication circuit, wherein an insertion base is provided on the pot body; an insertion cavity is provided on the upper cover; the insertion base is movably inserted the insertion cavity cooperatively; a first coil is provided on the insertion base, a second coil resonance circuit is provided in or near the insertion cavity; a pot body control unit is provided on the pot body, an upper cover control unit is provided on the upper cover. The present disclosure allows the information interaction by detecting the amplitude changes of the resonant wave, so that the wireless power supply and communication can be simultaneously provided.

Growing community of inventors

Foshan, China

Fan Zhang