Wireless power supply communication circuit for electric cooking pot, electric cooking pot and method for the same

Patent metadata

Field	Value
Publication number	US-10819153-B2
Application number	US-201815914795-A
Country	US
Kind code	B2
Filing date	Mar 7, 2018
Priority date	Dec 28, 2015
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

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.

First claim

What is claimed is:

1. A wireless power supply communication circuit for an electric cooking pot having a pot body and an upper cover, the wireless power supply communication circuit comprising: a first coil, arranged on the pot body; a pot body control unit, arranged on the pot body and coupled to the first coil; an upper cover control unit, arranged on the upper cover, wherein the upper cover control unit comprises: a rectification module, a functional device, a processing chip, and a carrier communication module, wherein the carrier communication module comprises a switch device and a first resonance capacitor coupled to the switch device, the switch device is coupled to the processing chip, the first resonance capacitor is coupled to a second coil resonance circuit, wherein, the switch device conducts after receiving a data signal, so that the first resonance capacitor acts on the second coil resonance circuit to change an amplitude of a current or voltage resonant wave generated by electromagnetic induction between the second coil resonance circuit and the first coil, wherein the switch device is a first MOS transistor, a G electrode of which is coupled to a signal output end of the processing chip, a S electrode of which is grounded, a D electrode of which is coupled to one end of the first resonance capacitor, and the other end of the first resonance capacitor is coupled to the second coil resonance circuit; the second coil resonance circuit, arranged on the upper cover and coupled to the upper cover control unit; a shunt resistor, one end of which is coupled to the G electrode of the first MOS transistor, and the other end of which is coupled to a signal output end of the upper cover control unit, and a first resistor, one end of which is coupled to the G electrode of the first MOS transistor, and the other end of which is grounded, wherein, the first coil is configured to electromagnetically induct with the second coil resonance circuit during power-on so that the second coil resonance circuit generates current or voltage; wherein, the pot body control unit is configured to obtain change signals of the current or voltage resonant wave generated by the electromagnetic induction between the first coil and the second coil resonance circuit during power supply and communication of the circuit, and demodulate the change signals into cooking signals; wherein, the second coil resonance circuit is configured to transmit the generated current or voltage to the upper cover control unit; and wherein, the upper cover control unit is configured to send the data signal to act on the second coil resonance circuit after the power-on, so as to change an amplitude of the current or voltage resonant wave generated by the electromagnetic induction between the second coil resonance circuit and the first coil.

2. The wireless power supply communication circuit of claim 1 , wherein the rectification module is coupled to the second coil resonance circuit, the functional device and the processing chip are coupled to the rectification module, the functional device is coupled to the processing chip; the processing chip is coupled to the carrier communication module and configured to send a data signal to the carrier communication module; the carrier communication module is coupled to the second coil resonance circuit and configured to act on the second coil resonance circuit, so as to change the amplitude of the current or voltage resonant wave generated by the electromagnetic induction between the second coil resonance circuit and the first coil after receiving the data signal.

3. The wireless power supply communication circuit of claim 2 , wherein, the second coil resonance circuit comprises a second coil, and at least one first capacitor coupled to two ends of the second coil and arranged in parallel with each other, the two ends of the second coil are coupled to the rectification module.

4. The wireless power supply communication circuit of claim 2 , wherein, the second coil resonance circuit comprises a second coil, at least one first capacitor coupled to two ends of the second coil and arranged in parallel with each other, and a second capacitor coupled in series with the first capacitor, the two ends of the second coil are coupled to the rectification module.

5. The wireless power supply communication circuit of claim 3 , wherein, the first coil and the second coil are coaxially arranged.

6. An electric cooking pot, comprising the wireless power supply communication circuit of claim 1 .

7. The electric cooking pot of claim 6 , wherein,
an insertion base is provided on the pot body;
an insertion cavity is provided on the upper cover and the insertion base movably inserts the insertion cavity cooperatively;
the first coil is provided on the insertion base and the second coil resonance circuit is provided in or near the insertion cavity; and
the pot body control unit is provided on the pot body and the upper cover control unit is provided on the upper cover.

8. The electric cooking pot of claim 7 , wherein, the insertion base is hinged on an articulated shaft arranged on the pot body.

9. The electric cooking pot of claim 8 , wherein, a rotation angle of the insertion base about the articulated shaft is 0-95°.

10. The electric cooking pot of claim 8 , wherein, the insertion base comprises a base hinged on the articulated shaft, and an insertion head vertical to the plane of the base is provided above the base; the insertion cavity comprises a base cavity and an insertion head cavity, the base is inserted the base cavity cooperatively, and the insertion head is inserted the insertion head cavity cooperatively.

11. The electric cooking pot of claim 10 , wherein, the first coil is arranged in the insertion head.

12. The electric cooking pot of claim 7 , wherein, the insertion base and the insertion cavity are connected by movable engagement.

13. The electric cooking pot of claim 12 , wherein, a chuck slot is provided in the insertion cavity, and an elastic chuck is provided on the surface of the insertion base, the elastic chuck is engaged with the chuck slot.

Assignees

• Foshan Shunde Midea Electrical Heating Appliances Mfg Co Ltd

Inventors

• Wang Yunfeng
• Zhang Fan
• Mei Wenkai
• Lei Jun
• Xiao Zhanfeng
• Wu Jianxin

Classifications

• H05B1/0261

  of food · CPC title

• H05B6/06

  Control, e.g. of temperature, of power · CPC title

• A47J36/26

  Devices for warming vessels containing drinks or food, especially by means of burners {Warming devices with a burner, e.g. using gasoline}; Travelling cookers, e.g. using petroleum or gasoline with one burner · CPC title

• H05B6/12

  Cooking devices · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title