| Electric power supply system and electric power supply system for motor vehicle -> Monitor Keywords |
|
|
 
Electric power supply system and electric power supply system for motor vehicleElectric power supply system and electric power supply system for motor vehicle description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070216348, Electric power supply system and electric power supply system for motor vehicle. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001]The present invention relates to power receiving devices. In particular, the invention relates to power receiving devices that receive electric power via radio waves. Further, the invention relates to a power receiving device having an antenna for receiving electric power through radio waves, and to an electric power supply system using a power feeder having an antenna for supplying electric power to the power receiving device via radio waves. [0002]Note that `power receiving device` as referred to in this specification means devices in general which receive electric power supply via a radio signal, from an externally located electric power supply device. BACKGROUND ART [0003]Various electric appliances are coming into wide use and a wide variety of appliances are on the market. In particular, in recent years the spread of portable electronic devices has been marked. As an example, portable telephones, digital video cameras, and the like, have become very convenient, having display portions with high definition and batteries that are more durable and have low power consumption. As a power source for driving portable electronic devices, a battery, which is a charging means, is built-in. As a battery, a secondary cell (hereinafter referred to as a `battery`) such as a lithium ion battery is used. As matters now stand, the battery is charged from an AC adaptor which is plugged into a household alternating current power supply, which is a power supply means (see Reference 1: Japanese Published Patent Application No. 2005-150022 [0004]Note that means of transportation such as bicycles, motor vehicles (including electric vehicles, and means of transportation that drive forward by electric power, regardless of whether they have four wheels or two), and the like are also included in the category of electronic devices having a battery. Accordingly, in this specification, portable electronic devices and means of transportation which have a battery are all referred to as `movable electronic devices` (`movable devices`). DISCLOSURE OF INVENTION [0005]However, the frequency of usage of movable electronic devices such as portable telephones and digital video cameras has risen steadily, and there is a limit to improving the durability and reducing the power consumption of batteries for coping with the operating time. Further, for charging batteries which are a power source that are built into portable telephones, digital video cameras, and the like, there have not been any methods other than charging from a charger through an AC adaptor via a household alternating current power supply or from a commercially available primary cell. Therefore, charging has been troublesome for users, and it has been necessary for users to take an AC adaptor or a primary cell which is a power supply means with them when they are moving about outdoors, which is burdensome. [0006]Further, in motor vehicles, which are movable electronic devices, battery charging is conducted by a combustion engine. However, ignition of a spark plug by electric power charged to a battery is required to start up the combustion engine. Therefore, when the battery has `gone flat` due to the motor vehicle not being used for a certain period of time, ignition of the spark plug cannot be conducted, and to start up the combustion engine it is necessary to conduct electric power supply directly from outside the vehicle using a cable, which is a problem in terms of safety and convenience. [0007]In addition, for charging from a household alternating current power supply using an AC adaptor or charging from a commercially available primary cell, it is necessary to provide a relay terminal as a portion which conducts electricity to the battery in the movable electronic device. Therefore, a structure in which the relay terminal is exposed or a structure in which the relay terminal is exposed through a protective portion results. Accordingly, there has been a problem in that malfunctions occur when the relay terminal is damaged or defective. [0008]Therefore, an object of the invention is to provide for a movable electronic device a power receiving device that simplifies charging a battery, which is a charging means, from a power feeder, which is a power supply means, and in which there is no possibility of malfunctions occurring due to an external factor relating to the relay terminal for directly connecting the battery and the power supply means, and no possibility of damage to the relay terminal itself. Further, an object of the invention is to provide an electronic device including the power receiving device. [0009]In view of the foregoing, the invention provides an antenna circuit for supplying electric power in a movable electronic device. Further, in the invention, electric power is supplied to the antenna circuit via a radio signal such as an electromagnetic wave. The radio signal is supplied to a battery as electric power through a signal processing circuit, thereby charging the battery. Below, a specific structure of the invention will be described. [0010]A power receiving device of the invention includes an antenna circuit, a signal processing circuit, and a battery. The antenna circuit receives a radio signal, and the radio signal is input to the battery via the signal processing circuit, whereupon the battery is charged. [0011]Further, a power receiving device of the invention which is different to the above-mentioned power receiving device includes an antenna circuit, a signal processing circuit, and a battery. The antenna circuit receives a radio signal which is supplied from a power feeder, and the radio signal is input to the battery via the signal processing circuit, whereupon the battery is charged. [0012]Another power receiving device of the invention includes an antenna circuit, a booster antenna, a signal processing circuit, and a battery. The antenna circuit receives a radio signal through the booster antenna, and the radio signal is input to the battery via the signal processing circuit, whereupon the battery is charged. [0013]Yet another power receiving device of the invention includes an antenna circuit, a booster antenna, a signal processing circuit, and a battery. The antenna circuit receives a radio signal through the booster antenna which is supplied from a power feeder, and the radio signal is input to the battery via the signal processing circuit, whereupon the battery is charged. [0014]A battery in the invention may supply electric power to a power supply circuit included in the signal processing circuit. [0015]An antenna circuit in the invention may receive a radio signal using an electromagnetic induction method. [0016]A battery in the invention may be a lithium battery, a lithium polymer battery, a lithium ion battery, a nickel metal hydride battery, a nickel cadmium battery, an organic radical battery, a lead-acid battery, an air secondary battery, a nickel-zinc battery, a silver-zinc battery, or a capacitor. [0017]Further, the invention may be an electronic device including a power receiving device. [0018]Further, the electronic device of the invention may be any one of a portable telephone, a notebook computer, a digital camera, a portable image reproduction device, a digital video camera, a portable information terminal, a television, a motor vehicle, and a bicycle. [0019]A power receiving device of the invention includes an antenna circuit. Therefore, it is not necessary to provide a relay terminal as a portion which conducts electricity to a battery in a movable electronic device, and power can be supplied to the battery by a radio signal without malfunctions caused by damage to or defects in a relay terminal. In addition, since a power supply means for conducting power supply supplies power to a movable electronic device having a battery that is a charging device via a radio signal, charging can be conducted anytime, without the need for carrying a charger or a primary cell for charging. BRIEF DESCRIPTION OF DRAWINGS [0020]FIG. 1 shows a structure of a power receiving device of Embodiment Mode 1. Continue reading about Electric power supply system and electric power supply system for motor vehicle... Full patent description for Electric power supply system and electric power supply system for motor vehicle Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Electric power supply system and electric power supply system for motor vehicle patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Electric power supply system and electric power supply system for motor vehicle or other areas of interest. ### Previous Patent Application: Battery charger Next Patent Application: Charging system for legged mobile robot Industry Class: Electricity: battery or capacitor charging or discharging ### FreshPatents.com Support Thank you for viewing the Electric power supply system and electric power supply system for motor vehicle patent info. IP-related news and info Results in 0.2354 seconds Other interesting Feshpatents.com categories: Electronics: Semiconductor , Audio , Illumination , Connectors , Crypto , 174 |
 * Protect your Inventions * US Patent Office filing 
PATENT INFO |
|
