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Power cord

一种电源线、电源插座的技术，应用在电源线领域，能够解决布线复杂化、部件数量增加、响应变慢等问题，达到提高安全性、避免部件数量的增加的效果

Active Publication Date: 2015-06-17
PANASONIC INTPROP MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the response to a temperature rise at that corresponding pin becomes slower and safety may be reduced
[0005] On the other hand, in the case of installing a plurality of temperature sensors and individually monitoring the output of each temperature sensor, an increase in the number of parts and / or a complication of wiring may result.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0026] Such as figure 2 As shown, the power cord according to this embodiment includes: a plug 1, which is connected to a power outlet (not shown); a load connection part 2, which is connected to a load; and a disconnecting device 3, which is used to turn on / off The plug 1 is supplied with electricity to the load connection part 2 .

[0027] The load connection part 2 may be a connector, or may be an electric wire connected to a terminal structure (for example, a screw terminal) of the load.

[0028] The plug 1 is a plug having a grounding electrode and two poles specified by Class I of Japanese Industrial Standard (JIS) C8303. Such as Figure 3 to Figure 6 As shown, the plug 1 includes: a pair of pins 11, which respectively constitute a voltage side pole and a ground side pole for power transmission; and a ground pin 12, which constitutes a ground electrode. Each of the pin 11 and the ground pin 12 is made of a conductive material such as metal or the like.

[0029] The ...

no. 2 approach

[0059] Since the basic configuration of the present embodiment is the same as that of the first embodiment, illustration and description for the same configuration will be omitted.

[0060] In the present embodiment, when the voltage (detection voltage) Vd across the series circuit of the PTC thermistor 50 is equal to or greater than the judgment voltage, and thus the high temperature state is judged by the judgment circuit 33, the drive circuit 32 does not turn off the relay 31. , but sends a notification signal to the external control circuit 23 .

[0061] Specifically, such as Figure 12 As shown, a vehicle 20 including a secondary battery 21 , a charging circuit for charging the secondary battery 21 , such as a plug-in hybrid vehicle and an electric vehicle is assumed as a load connected to the load connection portion 2 . 22 and a control circuit 23 for controlling the charging circuit 22. Under the control of the control circuit 23, the charging current from the chargin...

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PUM

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Abstract

A power cord includes a plug and a load connection portion connected to a load. The plug contains a plurality of plug pins which are respectively inserted in plug pin insertion holes of a power socket and connected to the power socket and a plurality of PTC thermistors, at least one of which is provided for each of the plug pins to detect a temperature of the corresponding plug pin. The PTC thermistors form one series circuit, and the power cord includes a shut-off device which turns off power supply to the load connection portion from the plug pins when a resistance value of the series circuit is equal to or higher than a predetermined value.

Description

technical field [0001] The invention relates to a power cord. Background technique [0002] Conventionally, a power cord is provided, wherein the power cord includes: a plug connected to a power outlet; a temperature sensor for detecting the temperature of the plug; and a cutoff device for detecting an abnormal temperature using the temperature sensor. In the case of rising, the power supply from the plug to the load is stopped (see, for example, Japanese Unexamined Patent Application Publication No. 7-67245). The plug has a plurality of pins (plug pins), and each pin is inserted into the power socket and is in contact with a pin seat (pin rest) in the power socket. [0003] According to this type of power cord, even in the case of abnormal heat due to poor contact of pins of the plug at the power outlet, fire or damage to the plug due to heat can be prevented by stopping energization. [0004] In the case where only one temperature sensor is provided, the correlation betw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R13/66H01R13/70
CPCH01R13/665H01R13/70H01R13/7137H02H3/085H02H5/043H01R13/6683
Inventor 川本隆司近藤真树富山亮太大和弘治
Owner PANASONIC INTPROP MANAGEMENT CO LTD