Panasonic Intellectual Property Management Co., Ltd.

Panasonic Energy Co., Ltd.

Osamu Ohashi

Tsuyoshi Nishio

Masayoshi Koizumi

Noriaki Asaoka

Toshiki Tatsuta

Takeshi Yamamoto

Tomohiro Ota

Akihiro Morimoto

Tomoyuki Ichiza

An electronic circuit unit includes a trigger circuit and a circuit module. The trigger circuit includes a semiconductor switching element configured to output a switching pulse signal in response to an external trigger signal, a load resistor for the semiconductor switching element, a one-shot pulse circuit configured to convert the switching pulse signal into a one-shot pulse with a predetermined pulse width, and a forcible-reset circuit connected to an input side of the semiconductor switching element. The one-shot pulse circuit includes a coupling capacitor connected to an input side of the semiconductor switching element and a charging resistor for the coupling capacitor. The pulse width of the one-shot pulse is determined by a time constant of the coupling capacitor and the charging resistor. The forcible-reset circuit is configured to temporarily input an on-voltage to the semiconductor switching element so as to forcibly switch the circuit module to the operating mode.

Electronic circuit unit and battery pack

In a power supply device, a plurality of battery modules are connected in series, the plurality of battery modules including fuse connected in series with battery. In the power supply device, fuse included in the plurality of battery modules is fast-blow fuse.

Power supply device

To minimize excessively high output or increases in magnetic-flux leakage by controlling power feeding on the power-feeding side if an unforeseen situation occurs. This power-feeding device () feeds power to an external power-receiving device () in a contactless manner. A power-feeding coil () uses electromagnetic power to feed electrical power to a power-receiving coil () in the power-receiving device (). While power is being fed from said power-feeding coil (), a power-feeding-side control unit () determines the amount of displacement of the power-feeding coil () and, on the basis of the determined displacement amount, controls the amount of electrical power being fed.

Power-feeding device

An electricity supply apparatus supplies electricity in a contactless manner to an electricity reception section provided in a vehicle, the apparatus including: an electricity supply coil configured to supply electricity to an electricity reception coil of the electricity reception section, the electricity supply coil having a ring shape, an in-edge, an out-edge, and a mid-point, the inn-edge being adjacent to a hollow portion of the ring shape in a radial direction of the electricity supply coil, the out-edge being outer than the inn-edge in the radial direction, and the mid-point being between the inn-edge and the out-edge in the radial direction; and a casing which houses the electricity supply coil, the casing having a first surface configured to face the electricity reception section and a second surface on which the electricity supply coil is located.

Electricity supply apparatus and electricity reception apparatus

The electricity supply device () supplies electricity using electromagnetic force and opposes an external electricity reception coil (). An electricity supply coil () has a hollow section (), and has a spiral shape. A reader () has an antenna disposed in the projected space resulting from projecting the hollow section () in the central axial direction of the electricity supply coil () and at a position more separated from the electricity reception coil () than the opposing surface that opposes the electricity reception coil () and is of the electricity supply coil (), and ID data transmitted by an RF tag () installed proximally to the electricity reception coil () is received and detected by the antenna. An electricity-supply-side control unit () determines the presence/absence of an electricity reception coil () on the basis of the ID data detected by the reader ().

Electricity supply device and electricity reception device

A power supply apparatus capable of appropriately supplying electrical power to a power transmission coil even if a foreign object is heated during power supply. The power supply apparatus () is provided with a power supply coil () opposing a power-receiving unit () provided to a vehicle and supplying power to the power-receiving unit (), and a casing () accommodating the power supply coil (). In the casing (), a first cover () is formed on a surface of the casing () opposing the power-receiving unit (), and a second cover () opposing the first cover () is arranged between the first cover () and the power supply coil ().

Power supply apparatus

This contactless power transmission device transmits power to a contactless power reception device having a reception-side coil and a reception-side resonator which resonates with the reception-side coil. The contactless power transmission device has a transmission unit including a transmission-side coil, a transmission-side resonator which resonates with the transmission-side coil, and an inverter for feeding power to the transmission-side resonator. The inductance value of the transmission-side coil and/or the capacitance value of the transmission-side resonator is set so that the frequency range in which the phase difference of a primary-side current flowing through the transmission unit relative to a primary-side voltage applied to the transmission unit is zero or above is wider than when the inductance value of the reception-side coil are equal to each other as are the capacitance value of the reception-side resonator and the capacitance value of the transmission-side resonator.

Contactless power transmission device, contactless power reception device, and contactless power transmission system

Power feed device () supplies power to storage battery () mounted on vehicle (), through power receiving unit () of vehicle (). Power supply unit () performs preliminary supply to power receiving unit () while sequentially changing a frequency, and performs main supply with power larger than in the preliminary supply. Power supply-side controller () acquires frequency characteristics associated with power supply coil (), and specifies a resonance frequency based on the acquired frequency characteristics. Power supply-side controller () determines whether or not to supply power to power reception coil () based on a frequency difference between resonance frequencies.

Noise reducing power feed device, power reception device and power feed method

In the power supply apparatus (), on an upper surface (), which is the surface opposing the power-receiving unit () of a cabinet (), in the portion where a power supply coil () is projected when the power supply coil () is projected on the cabinet () toward the direction of the power-receiving unit (), a first inclined part () gradually approaching the power supply coil () from the top section () toward the inner edge section () of the power supply coil () is formed in the radial direction of the power supply coil (), and in the portion where the power supply coil () is projected, a second inclined part () gradually approaching the power supply coil () from the top section () toward the outer periphery () of the power supply coil () is formed in the radial direction of the power supply coil ().

Disclosed is a contactless power supply device which supplies power in a contactless manner, and adopts a configuration including a power supply coil that generates an electromagnetic field and supplies power, a case that houses the power supply coil, a wire that dissolves at a temperature below a heat-resistant temperate of the case, a dissolution detection unit that detects dissolution of the wire, and a controller that performs control based on a detection result of the dissolution detection unit.

Contactless power supply device and contactless power receiving device

Power feeding device

In the present invention, an electricity supply unit () contactlessly supplies electricity using electromagnetic induction to an electricity reception unit () provided to a vehicle. An electricity supply coil () has a ring shape, and supplies electricity to the electricity reception unit () while facing the electricity reception unit (). A casing () houses the electricity supply coil (). The casing () has an inclined section () that is inclined in a manner so as to approach the electricity supply coil () gradually in the direction towards the outer periphery () of the electricity supply coil () in the radial direction of the electricity supply coil () at the portion at which the electricity supply coil () is projected when the electricity supply coil () is projected at the casing () in the direction towards the electricity reception unit ().

Growing community of inventors

Kanagawa, Japan

Osamu Ohashi