Electric kettle and power supply unit

Patent metadata

Field	Value
Publication number	US-12383089-B2
Application number	US-202117533726-A
Country	US
Kind code	B2
Filing date	Nov 23, 2021
Priority date	Dec 1, 2020
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

An electric kettle has a kettle body and a power supply unit that is configured to supply power to the kettle body. The power supply unit has a power supply base, a mounting unit and a first detection part. The power supply base is configured such that the kettle body is placed on top thereof, and has a power supply connection part that is configured to be electrically removably connected to a power receiving connection part. The mounting unit is configured such that a battery pack is removably coupled thereto as an external power source for supplying power to a heating part via the power supply connection part and the power receiving connection part. The first detection part is configured to detect that the power supply unit is on a plane.

First claim

The invention claimed is:

1. An electric kettle, comprising:
a kettle body having a power receiving connection part configured to receive power from an external power source, and a heating part configured to heat liquid contained in the
a power supply unit configured such that the kettle body is placed thereon, and configured to supply power to the kettle body,

the power supply unit including:
a power supply base configured such that the kettle body is placed on top thereof, the power supply base including a power supply connection part that is configured to be electrically removably connected to the power receiving connection part;
a mounting unit configured such that a battery pack is removably coupled thereto as the external power source for supplying power to the heating part via the power supply connection part and the power receiving connection part; and
a first sensor configured to detect that the power supply unit is placed on a plane, wherein:
an indicator configured to indicate drive information of the electric kettle; and
a second controller configured to control the indicator based on a detection result of the first sensor, wherein:
the second controller is configured to cause the indicator to indicate, as the drive information that the power supply unit is not on the plane when the power supply unit is not placed on the plane.

2. The electric kettle as defined in claim 1 , wherein
the first sensor includes a switch provided in a lower surface of the power supply unit, and
the switch is configured to protrude from the lower surface when the power supply unit is not on the plane, while being pushed into the lower surface when the power supply unit is on the plane.

3. The electric kettle as defined in claim 1 , further comprising:
a first controller that is configured to control power supply to the heating part via the power supply connection part and the power receiving connection part based on a detection result of the first sensor, wherein:
the first controller supplies power supply to the heating part when at least one predetermined condition is satisfied, and does not supply power to the heating part when the at least one predetermined condition is not satisfied, and
the at least one predetermined condition includes that the power supply unit is placed on the plane.

4. The electric kettle as defined in claim 3 , further comprising a second sensor configured to detect that the kettle body is on the power supply base.

5. The electric kettle as defined in claim 4 , wherein:
the first controller is further configured to control power supply to the heating part based on a detection result of the second sensor,
the at least one predetermined condition includes that the kettle body is on the power supply base.

6. The electric kettle as defined in claim 5 , wherein the second controller is further configured to control the indicator based on a detection result of the second sensor, and to cause the indicator to indicate, as the drive information, that the kettle body is not on the power supply base when the kettle body is not on the power supply base.

7. The electric kettle as defined in claim 6 , wherein:
the first sensor includes a switch, the switch being provided in a lower surface of the power supply unit, and configured to protrude from the lower surface when the power supply unit is not on the plane, while being pushed into the lower surface when the power supply unit is on the plane, and
the second controller is further configured to detect a residual capacity of the battery pack via the mounting unit and to cause the indicator to indicate, as the drive information, that the residual capacity of the battery pack is not more than a predetermined residual capacity when the residual capacity of the battery pack is not more than the predetermined residual capacity.

8. The electric kettle as defined in claim 1 , further comprising a second sensor configured to detect that the kettle body is on the power supply base.

9. The electric kettle as defined in claim 3 , further comprising:
a second sensor configured to detect that the kettle body is on the power supply base, wherein:
the first controller is further configured to control power supply to the heating part based on a detection result of the second sensor, and
the at least one predetermined condition includes that the kettle body is placed on the power supply base.

10. The electric kettle as defined in claim 1 , further comprising:
a second sensor configured to detect that the kettle body is on the power supply base, wherein:
the second controller is further configured to control the indicator based on a detection result of the second sensor, and to cause the indicator to indicate, as the drive information that the kettle body is not on the power supply base when the kettle body is not placed on the power supply base.

11. The electric kettle as defined in claim 1 , wherein the second controller is further configured to detect a residual capacity of the battery pack via the mounting unit and to cause the indicator, as the drive information, that the residual capacity of the battery pack is not more than a predetermined residual capacity when the residual capacity of the battery pack is not more than the predetermined residual capacity.

12. The electric kettle as defined in claim 1 , wherein the power supply unit has a grip part that extends upward from the power supply base and is configured to be held by a user.

13. The electric kettle as defined in claim 12 , wherein the power supply base and the mounting unit are respectively arranged on opposite sides of the grip part.

14. The electric kettle according to claim 1 , wherein the indicator includes at least one of a first display part, a second display part, a sound output, a first switch and a second switch.

15. A power supply unit, which is configured such that a kettle body is placed thereon, and configured to supply power to the kettle body, comprising:
a power supply base configured such that the kettle body is placed on top thereof, the power supply base including a power supply connection part that is configured to supply power to the kettle body;
a mounting unit that is configured such that a battery pack is removably coupled thereto to supply power to the kettle body via the power supply connection part;
a first sensor configured to detect that the power supply unit is on a plane;
an indicator configured to indicate drive information of an electric kettle; and
a second controller configured to control the indicator based on a detection result of the first sensor, wherein:
the second controller is configured to cause the indicator to indicate, as the drive information that the power supply unit is not on the plane when the power supply unit is not placed on the plane.

16. An electric kettle, comprising:
a kettle body having a power receiving connection part configured to receive power from an external power source, and a heating part configured to heat liquid contained in the kettle body by the power the power receiving connection part receives; and
a power supply unit configured such that the kettle body is placed thereon, and configured to supply power to the kettle body,
the power supply unit including:
a power supply base configured such that the kettle body is placed on top thereof, the power supply base including a power supply connection part that is configured to be electrically removably connected to the power receiving connection part;
a mounting unit configured such that a battery pack is removably coupled thereto a

Assignees

• Makita Corp

Inventors

• Hori Atsushi
• Fujimoto Yasuyuki

Classifications

• H05B1/0202

  Switches · CPC title

• H05B1/0269

  For heating of fluids · CPC title

• H05B2213/05

  Heating plates with pan detection means · CPC title

• A47J27/21166

  Constructional details or accessories · CPC title

• A47J36/32

  Time-controlled igniting mechanisms or alarm devices · CPC title