Composite power cable in which heat sensing wire is embedded and overheat protection device comprising same

Abstract

The present invention relates to: a composite power cable in which a heat sensing wire is embedded, having a simple structure so as to facilitate installation and improve economic feasibility and, simultaneously, being capable of sensing heat generated inside and outside the power cable; and an overheat protection device comprising the composite power cable. According to the present invention, a composite power cable in which a heat sensing wire is embedded comprises: a dummy (100) extending to one side; at least one power feeding wire (200) which is helically wound on an outer circumferentialsurface of the dummy (100) in the direction in which the dummy (100) extends, and to which power is applied from an inverter so that a high-frequency current flows therein; at least one heat sensingwire (300) helically wound, together with the power feeding wire (200), on the outer circumferential surface of the dummy (100) in the direction in which the dummy (100) extends, so as to sense the heat generated from the power feeding wire (200); and a cable sheath (400) formed to encompass the power feeding wire (200) and the heat sensing wire (300) on the outside.

Description

technical field [0001] The invention relates to a composite power cable with a built-in thermal induction line and an overheat protection device equipped with it. Background technique [0002] As a device that wirelessly transmits power through magnetic induction, the wireless power transmission device can wirelessly transmit power to a trolley running along the track or wirelessly charge a fixed object (for example, a parked electric car) without electrical or mechanical contact. [0003] figure 1 is a diagram schematically illustrating a conventional wireless power transmission device. [0004] Such as figure 1 As shown, the existing wireless power transmission device includes: a power supply line 10; an AC power supply device 20, which supplies a high-frequency current to the power supply line; a collector core 30, which is wound as a collector coil of a secondary winding, and, The magnetic core 30 may include a transport trolley connection part 31 for connecting with ...

AI Technical Summary

Problems solved by technology

However, in this case, since the thermal induction line 300 is additionally provided outside the high-frequency power cable 50, there are problems of poor economy and cumbersome installation, and with figure 2 The conventional method shown is the same, but there is a problem that it takes a long time to detect the heat generated at the position a outside the high-frequency power cable 50

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