TEMPERATURE ESTIMATION DEVICE AND TEMPERATURE ESTIMATION METHOD FOR CONTACTLESS POWER-RECEPTION DEVICE

TEMPERATURE ESTIMATION DEVICE AND TEMPERATURE ESTIMATION METHOD FOR CONTACTLESS POWER-RECEPTION DEVICE

A charging controller (25) acquires the power loss of a power transmission coil (31) from a power supply device (100) via wireless communication. A temperature estimation unit (33) estimates the ambient temperature of a power reception coil on the basis of a preset amount of heat generation of a pow...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: OZAKI, Michio
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES
ELECTRICITY
ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL
GENERATION
INDUCTANCES
MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES
MAGNETS
PERFORMING OPERATIONS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
SYSTEMS FOR STORING ELECTRIC ENERGY
TRANSFORMERS
TRANSPORTING
VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:A charging controller (25) acquires the power loss of a power transmission coil (31) from a power supply device (100) via wireless communication. A temperature estimation unit (33) estimates the ambient temperature of a power reception coil on the basis of a preset amount of heat generation of a power reception device (200) and the power loss of the power transmission coil (31). In this case, when the positional relationship between the power transmission coil (31) and the power reception coil (41) is shifted from a normal positional relationship, the temperature estimation unit (33) increases, in accordance with the magnitude of positional shift amount, the contribution to a temperature rise due to the power loss of the power transmission coil (31). Accordingly, an abnormal increase in the ambient temperature of the power reception coil (41) can be prevented.