Power conversion apparatus, method for manufacturing power conversion apparatus, and electric appliance
A power conversion apparatus includes: a board; a first electronic component disposed on a first surface of the board; and a temperature sensor disposed on a second surface of the board which is opposite to the first surface. The power conversion apparatus may further include a first heat conductive member disposed between the first electronic component and the temperature sensor.
1. A power conversion apparatus comprising:
a board;
a first electronic component enclosed in a housing and disposed on a first surface of the board; and
a temperature sensor disposed on a second surface of the board which is opposite to the first surface,
wherein the temperature sensor is disposed on the second surface at a position directly opposite at least a portion of the housing of the first electronic component, wherein a straight line perpendicular to the board intersects both the housing of the first electronic component and the temperature sensor.
2. The power conversion apparatus according to claim 1 , further comprising a first heat conductive member disposed between the first electronic component and the temperature sensor.
3. The power conversion apparatus according to claim 2 , wherein
the first heat conductive member includes a conductor pattern formed on the second surface of the board, and
the temperature sensor is disposed on the conductor pattern on the second surface.
4. The power conversion apparatus according to claim 1 , wherein the first electronic component includes a second heat conductive member fixed to the first surface through the board.
5. The power conversion apparatus according to claim 4 , wherein the second heat conductive member includes a fixing member that fixes the first electronic component to the board.
6. The power conversion apparatus according to claim 4 , wherein the second heat conductive member includes a conductive member that electrically connects between the first electronic component and the conductor pattern formed on the second surface of the board.
7. The power conversion apparatus according to claim 1 , wherein
the first electronic component is a terminal block including a plurality of terminals, and
the temperature sensor is disposed on the second surface at a position opposite each terminal.
8. The power conversion apparatus according to claim 7 , wherein
the temperature sensor is a temperature fuse including a temperature sensing element, and
the temperature sensing element is disposed on the second surface at a position opposite each terminal.
9. The power conversion apparatus according to claim 8 , further comprising
a temperature fuse cover that is disposed on the second surface side of the board, holds a plurality of the temperature fuses, and is formed of an insulating material, wherein
the temperature fuse cover holds the plurality of temperature fuses so that the temperature sensing element of each temperature fuse is exposed to the second surface side and so that the second surface side of a connector connecting between lead wires of the plurality of temperature fuses is covered.
10. The power conversion apparatus according to claim 9 , wherein
the temperature fuse cover includes:
a plurality of first positioners that sets the temperature sensing element of each of the plurality of temperature fuses at a predetermined position while exposing the temperature sensing element to the second surface side;
a plurality of second positioners that each sets each of a plurality of connectors at a predetermined position while covering the second surface side of the plurality of connectors; and
a plurality of third positioners that each sets the lead wires of each of the plurality of temperature fuses along a predetermined route.
11. The power conversion apparatus according to claim 7 , further comprising, on the first surface of the board, a second electronic component included in a surge suppression circuit that is disposed adjacent to the terminal block.
12. A method for manufacturing a power conversion apparatus, comprising:
preparing a board including a first surface provided with a terminal block including a plurality of terminals each enclosed in a housing;
attaching a plurality of temperature fuses to a temperature fuse cover; and
disposing the temperature fuse cover on a second surface side of the board, which is opposite to the first surface, so that each of the plurality of temperature fuses is disposed on the second surface of the board at a position directly opposite respective housings of the plurality of terminals, wherein a straight line perpendicular to the board intersects both a temperature fuse of the plurality of temperature fuses and a corresponding opposite housing of the respective housings of the plurality of terminals.
13. An electric appliance comprising:
a board;
a first electronic component enclosed in a housing and disposed on a first surface of the board;
a converter that converts DC power into AC power; and
a temperature sensor disposed on a second surface of the board which is opposite to the first surface,
wherein the temperature sensor is disposed on the second surface at a position directly opposite at least a portion of the housing of the first electronic component, wherein a straight line perpendicular to the board intersects both the housing of the first electronic component and the temperature sensor.