Mitsubishi Denki Kabushiki Kaisha

Hiroichi Ishida

Kiyoshi Hanafusa

Toru Kengaku

Eiichi Teraoka

Kousei Maemura

Koji Kawamoto

Takeshi Tokuda

Tetsuaki Ohga

Tetsuaki Oga

A plate shaped battery pack includes: a power generating element () sealed by a wrapping member () formed in the shape of a wrapper constructed of a laminated film; an anode terminal () and a cathode terminal () connected to the power generating element () and extending from almost a middle portion thereof; and an exterior member (). The exterior member has a support member () in a protruding shape supporting the anode terminal or the cathode terminal; or a recess () receiving a seal portion () of the wrapping member. Furthermore, the plate shaped pack has a construction in which the exterior member is electrically conductive and surrounds the wrapping member, and one of the anode terminal and the cathode terminal are electrically connected to thereto, or another construction including, in addition, a temperature detector connected to a heat transfer member.

Plate shaped battery pack and portable radio terminal

A battery ( to to ) includes a cylindrical or polygonal exterior can ( ); a safety valve ( to ) provided to the exterior can ( ) to reduce an internal pressure of the battery ( to to ). The exterior can ( ) includes: a relatively thick portion ( ) and a relatively thin portion ( to to ). The relatively thin portion ( to to ) constitutes the safety valve ( to ).

Battery and portable device

A battery protective circuit which can ensure the safety and reliability of a rechargeable secondary battery is provided. Personal digital assistants include a main circuit ( ) and a battery block ( ). The battery block ( ) includes a battery ( ) and a current-amount control circuit ( ). The battery ( ) is charged via an AC adapter. The current-amount control circuit ( ) includes a current and temperature detecting circuit (for example a PTC element) operative to reduce a current amount when an amount of current flowing in the battery ( ) approaches a boundary value of a charge-guaranteed region in which the battery ( ) is rechargeable.

Battery protective circuit with current-amount control circuit

A plate-shaped battery comprises: a battery core which has a laminated structure of a sheet-shaped positive electrode and a sheet-shaped negative electrode laminated through a separator, and which has a positive and a negative terminal which are connected electrically to both the electrodes, respectively; and a laminated film which laminates a polymer resin and a metallic foil and which seals both the terminals, and covers the battery core, wherein the metallic foil is connected electrically with a positive or negative pole of the electrodes.

Plate-shaped battery and battery apparatus

Cell protective circuit

The inventive A/D and D/A conversion device replaces the conventional parameter generators, which are provided in pairs for supplying same filter parameters to the decimation and interpolation digital filters respectively, with a single parameter generator, thereby having the number of parameter generators and reducing the scale of circuit.

A/D and D/A conversion device with shared parameter generators

An A/D-D/A converting apparatus, in which a multiplier is omitted by storing the multiplied result of a filter coefficient and a digital signal in advance and reading it out responsive to the inputted digital signal, in view of the point that filter characteristics of digital filters of an A/D converting unit and a D/A converting unit are equal one another, memories which are coefficient generating devices are used in common, and further, in view of the point :hat processing contents of respective digital filters are equal, a multiplier and an accumulator constituting the digital filter are used in common to reduce a circuit configuration considerably.

Digital filter using intermediate holding registers and common

A decimation type digital filter which utilizes the thinned-out signal of a finite impulse response (FIR) filter having N taps for processing the signal by the product sum operation of filter coefficients and the input signals inputted at every first period, in which, on the basis of the ratio K between a first period which is the input signal period and an output signal period and the number of taps N, M (a value obtained by raising below the decimal point of N/K) registers are provided and M successive output signals are processed by the product sum operation in parallel by respective registers, whereby the input signal is not necessarily to be held, a capacity of the register may be minimized and processing may be effected once for each register during the first period or by M number of times of product sum operation in total, thus the operating speed can be reduced to 1/K and the capacity and the operating speed can be optimized.

Decimating digital finite impulse response filter

A frequency divider circuit having N flip-flops connected in series, includes a logic circuit for monitoring at least one of the outputs of the N flip-flops and halting the frequency division operation of a prior stage flip-flop when the value of the output which is monitored is equal to a predetermined value when a reset signal is input, and restarting frequency division operation when the reset signal is cancelled.

Growing community of inventors

Hyogo, Japan

Hiroichi Ishida