Abstract: A noise filter is provided with a filter circuit including a first condenser and a second condenser; the first condenser and the second condenser are connected in parallel with each other by a first wiring lead for connecting one terminal of the first condenser with one terminal of the second condenser and a second wiring lead for connecting the other terminal of the first condenser with the other terminal of the second condenser; the first wiring lead and the second wiring lead are arranged in such a way as to intersect each other odd-number times.

Abstract: A power converter includes: a base conductor, an electrically heating member which is provided on the base conductor, a noise reduction capacitor of flat plate-shape in which via an insulator, a plurality of first electrodes and second electrodes are alternately layered, on one surface, the first electrode in an outermost layer is exposed and on another surface, the second electrode in an outermost layer is exposed, a relay conductor which is electrically connected to other members from the electrically heating member via the noise reduction capacitor, and the second electrode in an outermost layer of the noise reduction capacitor is face-joined to a face of the base conductor at a side where the electrically heating member is provided and the first electrode in an outermost layer and the relay conductor are face-joined.

Abstract: A Si diode is used as a rectifying diode on a transformer secondary side of an isolated DC/DC converter, and a high-voltage Schottky barrier diode made of a wide bandgap semiconductor is used as a free-wheeling diode arranged between a rectifier circuit and a smoothing reactor. Thus, there may be provided an in-vehicle charger capable of suppressing a diode recovery surge voltage with a circuit configuration that is simpler and suppressed in cost increase as compared to a case where a related-art synchronous rectifier circuit system is employed.

Abstract: A power converter includes: a base conductor, an electrically heating member which is provided on the base conductor, a noise reduction capacitor of flat plate-shape in which via an insulator, a plurality of first electrodes and second electrodes are alternately layered, on one surface, the first electrode in an outermost layer is exposed and on another surface, the second electrode in an outermost layer is exposed, a relay conductor which is electrically connected to other members from the electrically heating member via the noise reduction capacitor, and the second electrode in an outermost layer of the noise reduction capacitor is face-joined to a face of the base conductor at a side where the electrically heating member is provided and the first electrode in an outermost layer and the relay conductor are face-joined.

Abstract: A vehicle power source apparatus is provided with a driving battery mounted in a vehicle, an auxiliary apparatus battery that supplies electric power to an auxiliary apparatus of the vehicle, a DC power conversion unit that supplies electric power from the driving battery to the auxiliary apparatus battery, a control unit that controls the DC power conversion unit, a driving battery harness that connects the driving battery with the DC power conversion unit and is protected by a shield, an auxiliary apparatus battery negative-side harness that connects the DC power conversion unit with the negative side of the auxiliary apparatus battery, and a voltage sensor that detects a connection abnormality in the auxiliary apparatus battery negative-side harness.

Abstract: The car-charging system can charge only an authenticated car both in a public parking area and at home. The car-charging system is capable of charging a charge-accumulating device in the car to be charged through a power-supplying line from a power source outside the car, and is arranged to authenticate the car by means of communication between an authentication-managing device in a power-supplying device outside the car and a DSRC onboard device in the car. The authentication-managing device and DSRC onboard device each have a DSRC basic application software program implemented thereon.

Abstract: A Si diode is used as a rectifying diode on a transformer secondary side of an isolated DC/DC converter, and a high-voltage Schottky barrier diode made of a wide bandgap semiconductor is used as a free-wheeling diode arranged between a rectifier circuit and a smoothing reactor. Thus, there may be provided an in-vehicle charger capable of suppressing a diode recovery surge voltage with a circuit configuration that is simpler and suppressed in cost increase as compared to a case where a related-art synchronous rectifier circuit system is employed.

Abstract: A noise filter is provided with a filter circuit including a first condenser and a second condenser; the first condenser and the second condenser are connected in parallel with each other by a first wiring lead for connecting one terminal of the first condenser with one terminal of the second condenser and a second wiring lead for connecting the other terminal of the first condenser with the other terminal of the second condenser; the first wiring lead and the second wiring lead are arranged in such a way as to intersect each other odd-number times.

Abstract: A vehicle charge system has a connection cable to supply power from an outside power supply, such as a commercial power supply, a driving battery, an auxiliary battery, a driving battery charge apparatus, and an auxiliary battery charge apparatus. When a voltage across the auxiliary battery is below a predetermined constant value, power from the outside power supply is supplied to a control circuit of the auxiliary battery charge apparatus, so that the auxiliary battery charge apparatus charges the auxiliary battery on its own without being controlled by a charge control portion.

Abstract: A vehicle power source apparatus is provided with a driving battery mounted in a vehicle, an auxiliary apparatus battery that supplies electric power to an auxiliary apparatus of the vehicle, a DC power conversion unit that supplies electric power from the driving battery to the auxiliary apparatus battery, a control unit that controls the DC power conversion unit, a driving battery harness that connects the driving battery with the DC power conversion unit and is protected by a shield, an auxiliary apparatus battery negative-side harness that connects the DC power conversion unit with the negative side of the auxiliary apparatus battery, and a voltage sensor that detects a connection abnormality in the auxiliary apparatus battery negative-side harness.

Abstract: A vehicle charging system (1) includes: a connection cable (2) for supplying power from the external power source (12) such as a commercial power source; the drive battery (8); an auxiliary battery (9); and a drive battery charging device (3). The drive battery charging device (3) includes a power source circuit (7) connected to the external power source (12), the drive battery (8), and the auxiliary battery (9). Power from at least one of the external power source (12), the drive battery (8), and the auxiliary battery (9) is supplied to the control section (4). Operation of the control section (4) becomes possible with the supplied power. Accordingly, under control of the control section (4), a charge section (10) charges the drive battery (8) and the auxiliary battery (9) using power from the external power source (12).

Abstract: A vehicle charge system has a connection cable to supply power from an outside power supply, such as a commercial power supply, a driving battery, an auxiliary battery, a driving battery charge apparatus, and an auxiliary battery charge apparatus. When a voltage across the auxiliary battery is below a predetermined constant value, power from the outside power supply is supplied to a control circuit of the auxiliary battery charge apparatus, so that the auxiliary battery charge apparatus charges the auxiliary battery on its own without being controlled by a charge control portion.

Abstract: A vehicle charging system (1) includes: a connection cable (2) for supplying power from the external power source (12) such as a commercial power source; the drive battery (8); an auxiliary battery (9); and a drive battery charging device (3). The drive battery charging device (3) includes a power source circuit (7) connected to the external power source (12), the drive battery (8), and the auxiliary battery (9). Power from at least one of the external power source (12), the drive battery (8), and the auxiliary battery (9) is supplied to the control section (4). Operation of the control section (4) becomes possible with the supplied power. Accordingly, under control of the control section (4), a charge section (10) charges the drive battery (8) and the auxiliary battery (9) using power from the external power source (12).

Abstract: The car-charging system can charge only an authenticated car both in a public parking area and at home. The car-charging system is capable of charging a charge-accumulating device in the car to be charged through a power-supplying line from a power source outside the car, and is arranged to authenticate the car by means of communication between an authentication-managing device in a power-supplying device outside the car and a DSRC onboard device in the car. The authentication-managing device and DSRC onboard device each have a DSRC basic application software program implemented thereon.

Abstract: A dedicated short range communications system can warn mutual approach between vehicles having mobile stations installed thereon through dedicated short range communications. Each mobile station includes: a data processing unit that performs data processing of radio transmission signals received by and to be sent from its own mobile station; and an other station allocation determination unit that determines, based on a frame control information slot of the received signal, whether a message data slot of the received signal is allocated to another mobile station. Each mobile station further includes: a message data slot allocation request unit that requests, in an activation slot of the radio transmission signal to be sent, the base station to allocate a message data slot to its own mobile station; and a warning command unit that generates a warning command when a message data slot of the received signal is allocated to another mobile station.

Abstract: The present invention provides a narrow band communication vehicle-mounted apparatus capable of performing communication in which there are normally no discrepancies with on-road systems when the apparatus starts up. The narrow band communication vehicle-mounted apparatus comprising: a radiocommunication portion 2 for sending and receiving with an on-road device via an antenna 1, a field intensity measuring portion 3 for detecting a radio field intensity, a control microcomputer 4 for controlling various equipment and a nonvolatile memory 5, wherein the control microcomputer 4 stores in the nonvolatile memory 5 randomly generated communication registration identification data when communication is opened or when the apparatus starts up, and communication is performed using communication registration identification data stored in the nonvolatile memory 5 in a case where the radio field intensity is in a communication range when the apparatus starts up.

Abstract: A dedicated short range communications system can warn mutual approach between vehicles having mobile stations installed thereon through dedicated short range communications. Each mobile station includes: a data processing unit that performs data processing of radio transmission signals received by and to be sent from its own mobile station; and an other station allocation determination unit that determines, based on a frame control information slot of the received signal, whether a message data slot of the received signal is allocated to another mobile station. Each mobile station further includes: a message data slot allocation request unit that requests, in an activation slot of the radio transmission signal to be sent, the base station to allocate a message data slot to its own mobile station; and a warning command unit that generates a warning command when a message data slot of the received signal is allocated to another mobile station.

Abstract: The present invention provides a narrow band communication vehicle-mounted apparatus capable of performing communication in which there are normally no discrepancies with on-road systems when the apparatus starts up. The narrow band communication vehicle-mounted apparatus comprising: a radiocommunication portion 2 for sending and receiving with an on-road device via an antenna 1, a field intensity measuring portion 3 for detecting a radio field intensity, a control microcomputer 4 for controlling various equipment and a nonvolatile memory 5, wherein the control microcomputer 4 stores in the nonvolatile memory 5 randomly generated communication registration identification data when communication is opened or when the apparatus starts up, and communication is performed using communication registration identification data stored in the nonvolatile memory 5 in a case where the radio field intensity is in a communication range when the apparatus starts up.

Abstract: A DSRC car-mounted equipment reliably preventing communication error in the communication area, comprising a communication control unit 11 for transmitting and receiving data by radio to and from an on-the-road equipment, a radio detector unit 12 for detecting signals received from the on-the-road equipment by detecting the electric field intensity E, and a microcomputer (10A) for fetching output signals from the radio detector unit by controlling the communication control unit to process data included in the received signals, wherein the microcomputer includes an input interface for receiving data Vr related to the speed of the vehicle, and communication area-setting means for variably setting the radio communication area depending upon the vehicle speed data, and wherein the communication area-setting means contracts the communication area when the vehicle speed data represents a low-speed state and expands the communication area when the vehicle speed data represents a high-speed state.

Abstract: A vehicle-mounted unit for a toll collection system for automatically charging a toll comprises a communication zone determining means for determining if the vehicle is within a toll collection communication zone by radio communication with a road-side machine, an insertion state detecting means for detecting if the storage medium has been correctly inserted into the vehicle-mounted unit, a suitability determining means for determining if the storage medium is suitable for toll collection, and an external control apparatus interface portion for sending and receiving data signals to and from a vehicle speed control device, the interface portion sending data to the vehicle speed control device for decelerating the vehicle if the vehicle-mounted unit is within the toll collection communication zone and is confirming if the storage medium is correctly inserted into the vehicle-mounted unit or is confirming toll collection suitability.