Japan, Feb. 24 -- FURUKAWA ELECTRIC CO LTD:THE,FURUKAWA AUTOMOTIVE SYSTEMS INC has got intellectual property rights for 'PROTECTION DEVICE.' Other related details are as follows:
Application Number: JP,2022-054886
Category (FI): H02J1/00,309@Q,H02H3/087,H02J1/04,H02J1/00,H02H5/04,120
Stage: PROBLEM TO BE SOLVED: To suppress cost and to protect a wire from a temperature rise of the wire.SOLUTION: A protection device is a protection circuit which cuts off current flowing from a switch installed between a power supply and a load to the load via the wire, and includes: a current measurement part for measuring current flowing in a shunt resistor connected in series with the wire; and a determination part for turning the switch on or off on the basis of current measured by the current measurement part. The shunt resistor has the same temperature at energization as the wire when temperature characteristics are approximately the same as the wire and an environment temperature is equal to the environment temperature of the wire. The determination part turns off the switch when a current value measured by the current measurement part is equal to or higher than a threshold which is previously determined from an environment temperature upper limit of the wire, a wire limit temperature of the wire and the temperature characteristics of the shunt resistor.SELECTED DRAWING: Figure 1 (Grant)
Filing Date: March 30, 2022
Publication Date: Oct. 13, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
