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4-Traders Homepage  >  Equities  >  Tokyo  >  Denso Corp    6902   JP3551500006

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Denso : Patent Issued for Temperature Detecting Device and Method (USPTO 9250138)

02/11/2016 | 05:54pm US/Eastern

By a News Reporter-Staff News Editor at Journal of Transportation -- From Alexandria, Virginia, VerticalNews journalists report that a patent by the inventors Watanabe, Kazunori (Kariya, JP); Maebara, Tsuneo (Nagoya, JP); Fukuta, Junichi (Kuwana, JP), filed on May 15, 2013, was published online on February 2, 2016.

The patent's assignee for patent number 9250138 is DENSO CORPORATION (Kariya, JP).

News editors obtained the following quote from the background information supplied by the inventors: "The present invention relates to a temperature detecting device that detects the temperature of a temperature detection object based on an output signal from a temperature detecting element. The temperature detecting device is used, for example, to detect the temperature of a switching element in a power conversion device (inverter or converter) of a motor generator.

"For example, as shown in JP-A-2009-171312, a temperature detecting device is conventionally known that detects the temperature of an inverter by a thermo-sensitive diode. In this device, one end of the two ends of the thermo-sensitive diode is connected to a constant current power source. The other end is grounded. The temperature of the inverter is detected based on a potential difference between the two ends of the thermo-sensitive diode.

"Here, when a plurality of temperature detection areas are present within the inverter, the number of thermo-sensitive diodes required adheres to the number of temperature detection areas. Should a constant current power source be provided in correspondence with each of the plurality of thermo-sensitive diodes, the number of components configuring the temperature detecting device increases. As a result, the configuration of the temperature detecting device becomes complex, and cost increases.

"Therefore, a new temperature detecting device is desired in which the number of components configuring the temperature detecting device can be reduced."

As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventors' summary information for this patent: "As an exemplary embodiment, the present application provides a temperature detecting device comprising: a plurality of temperature detecting elements that are provided in correspondence with a plurality of temperature detection objects, and each temperature detecting element outputting a signal having a correlation with the temperature of the temperature detection object by being supplied power; and a temperature detector that detects the temperatures of the plurality of temperature detection objects based on the output signals from the plurality of temperature detecting elements. The plurality of temperature detecting elements are connected in series or in parallel. The plurality of temperature detecting elements are each supplied power by a common power source. The temperature detector detects an average temperature of at least two temperature detection objects among the plurality of temperature detection objects, or respective temperatures of the plurality of temperature detection objects based on the output signals.

"In the temperature detecting device of the present application, the plurality of temperature detecting elements and the temperature detector are configured according to the above-described aspect. The average temperature is detected to simplify the temperature detection device. Alternatively, the respective temperatures of the plurality of temperature detection objects are detected to enhance detection accuracy of the temperatures of the temperature detection objects.

"In addition, in the above-described exemplary embodiment, the plurality of temperature detecting elements are each supplied power by a common power source. Therefore, for example, compared to a configuration in which power sources are provided in correspondence with the plurality of temperature detecting elements, the number of components, such as power sources, configuring the temperature detecting device can be effectively reduced.

"Furthermore, because the common power source is provided, for example, compared to a configuration in which power sources are provided in correspondence with the plurality of temperature detecting elements, reduction in temperature detection accuracy caused by lo variations in output power of the power sources attributed to individual differences among the power sources can also be prevented."

For additional information on this patent, see: Watanabe, Kazunori; Maebara, Tsuneo; Fukuta, Junichi. Temperature Detecting Device and Method. U.S. Patent Number 9250138, filed May 15, 2013, and published online on February 2, 2016. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9250138.PN.&OS=PN/9250138RS=PN/9250138

Keywords for this news article include: DENSO CORPORATION, Auto Part Companies.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2016, NewsRx LLC

(c) 2016 NewsRx LLC, source Business Newsletters

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