Nagano Japan Radio Co., Ltd.

Other

Fuji Jukogyo Kabushiki Kaisha

Seiichi Anzawa

Fujio Matsui

Hiroshi Nishizawa

Mitsunori Ishii

Atsushi Namba

Hisashi Itoh

Chihiro Inoue

Katsumi Kobayashi

Syoichi Yoda

This control device, for a representative lamp L, by way of a power control circuit, detects the cathode current Ik from a resistor TRk, and controls a high-voltage stabilizing circuit, and performs drive control so that the gate voltages, which were divided from the output voltage Vgo from the high-voltage stabilizing circuit, become suitable voltages. Moreover, the control device, for other lamps L, . . . , Ln, by way of the power control circuit, changes the voltage dividing ratio of impedance dividing by resistors R, R, . . . , Rn, Rnfor the output voltage Vgo using control elements Q, . . . , Qn, and performs control so that the cathode current of each of the lamps L, . . . , Ln becomes the same as the cathode current of the representative lamp L

Apparatus for driving field emission lamp

A voltage equalizer for battery elements for equalizing terminal voltages of a plurality of battery elements comprises an equalization processing circuit. The equalization processing circuit includes a transformer having basic windings. The basic windings comprise a plurality of primary windings corresponding to the plurality of battery elements and one or more secondary windings, a plurality of switching elements corresponding to the battery elements, a plurality of primary diodes corresponding to the battery elements, and one or more secondary diodes corresponding to the secondary windings. In the voltage equalizer, primary series circuits for carrying current from the battery elements via the corresponding primary diodes to the primary windings and secondary series circuits for carrying current from the secondary windings via the secondary diodes to the battery elements are formed.

Voltage equalizer for battery elements

A voltage detection circuit for detecting terminal-to-terminal voltages of a plurality of storage devices Band Bconnected in series. In the voltage detection circuit for storage devices, voltage judgment units VPL-, VPL-, VPH-and VPH-are provided between the terminals of the plurality of storage devices respectively, and the detection result of the initial-stage voltage judgment unit is transmitted to the next-stage voltage judgment unit without being isolated, so that the judgment result of the final-stage voltage judgment unit is obtained.

Voltage detection circuit for storage devices

A current breaker circuit by which currents flowing in loads respectively connected to a plurality of storage devices connected in series are broken in accordance with a single external control signal. The current breaker circuit includes semiconductor switching devices inserted between the storage devices and the loads respectively, a unit for supplying the external control signal to at least one of the semiconductor switching devices, and control signal generating units for generating ON/OFF signals in accordance with turning ON/OFF of the semiconductor switching device supplied with the external control signal so as to supply the ON/OFF signals to the other semiconductor switching devices.

Current breaker circuit for storage devices, and abnormality detection circuit

A voltage equalizing apparatus for battery devices includes a core, a plurality of first battery devices interconnected in series with each other, each consisting of one or more cells, a plurality of secondary windings magnetically connected with each other through the core, a plurality of first switching devices, each connected to one of the plurality of secondary windings and one of the plurality of first battery devices to constitute a first closed circuit, one or more second battery devices provided separately from said plurality of first battery devices interconnected in series or a second battery device provided by rendering the whole of said plurality of first battery devices interconnected in series one battery device, a primary winding magnetically connected with the plurality of secondary windings through the core, and a second switching device connected in series with the second battery device and the primary winding to constitute a second closed circuit. The plurality of first switching devices and the plurality of second switching device are alternately turned ON and OFF to equalize the output voltages of the first battery devices. The plurality of first switching devices continue to be turned ON after exciting energy stored in the core is transported by the charging to the battery devices having lower voltages among said plurality of first battery devices, to effect the charging from the battery devices having higher voltages among said plurality of first battery devices to the battery devices having lower voltages among said plurality of first battery devices and/or to store energy in said core.

Voltage equalizing apparatus for battery devices

a voltage equalizing apparatus for battery devices includes a core, a plurality of first closed circuits and a second closed circuit. The plurality of first closed circuits each includes one of a plurality of first battery devices interconnected in series, one of a plurality of secondary windings magnetically connected with each other through the core, and one of a plurality of first switching devices. The second closed circuit includes a second battery device, a primary winding magnetically connected with the secondary windings through the core, and a second switching device. The first switching devices and the second switching device are alternately turned ON and OFF to equalize the output voltages of the first battery devices. The first switching devices continue to be turned ON after completion of the transportation of the exciting energy stored in the core. In the voltage equalizing apparatus for battery devices, the ON-duration ratio T /T between the ON duration T of the first switching devices S to Sn and the ON duration T of the second switching device S is set so that the voltages of the first battery devices B to Bn become a predetermined voltage.

The storage module comprises a plurality of storage means Ca-Cd for storing electric energy and energy transfer means and Sa-Sd for transferring stored energy among the plurality of storage means Ca-Cd so that the charging voltage Vca-Vcd across each of the storage means Ca-Cd can be kept at a value according to a prescribed ratio.

Storage module

In such a voltage equalizer circuit in which each of plural windings P to Pn electromagnetically coupled to each other, each of plural storage elements E to En series-connected to each other, and each of plural first switching elements S to Sn are connected to each other in a series connecting manner so as to constitute a plurality of closed circuits, this voltage equalizer apparatus is featured by that a reference voltage winding Pp electromagnetically coupled to the plurality of windings is provided; both a DC power supply Ep and a second switching element Sp are series-connected to the second winding; and all of the plural first switching elements and the second switching element are turned ON/OFF in a synchronous manner.

Voltage equalizer apparatus and method thereof

Voltage equalizing apparatus and voltage equalizing method for battery devices

An energy transfer unit constructed such that a plurality of series-connected circuits which are formed by series-connecting at least windings,to,and switching means Sa to Sd are provided and that the plurality of series-connected circuits are parallel-connected to a plurality of energy storage means Ca to Cd respectively, the plurality of windings,to,are magnetically coupled to each other respectively, and the plurality of switching means Sa to Sd are switching-controlled in synchronous with each other respectively.

Energy transfer unit, charge unit, and power supply unit

An area on which a coil part is formed on part of a substrate is secured, coil patterns are provided on a plurality of unit substrates corresponding to the area, the coil patterns of the laminated unit substrates are connected by a through hole to form the coil part, thereby resulting in miniaturization, reduction of the number of assembling processes, reduction of cost, noise prevention, and improvement of reliability. Heat radiation patterns are provided in unitary form on the coil patterns to secure a sufficient heat radiation property.

Multi-layer printed substrate

When connecting a second printed substrate 3 with a first printed substrate 2, a plurality of first connection patterns 4s, 4b, for example, including through holes 2h are provided on the first printed substrate 2, a plurality of second connection patterns 5a, 5b facing the first connection patterns 4a, 4b are provided on an under surface 3d of the second printed substrate 3, and the first connection patterns 4a and the second connection patterns 5a are soldered using a reflow system or a flow system, thereby providing simplification, miniaturization, and reduction of cost together with noise reduction, lower loss, and high reliability.

Growing community of inventors

Nagano, Japan

Seiichi Anzawa