Nissan Motor Company Limited

Sony Corporation

Atsushi Takano

Tsutomu Soga

Naoki Yamamoto

Takashi Iimori

Kazuhiko Okino

Hisashi Niioka

Shun Kayama

Yukiko Shimizu

Shinsuke Higuchi

Kenji Hosaka

Takuya Kinoshita

Hayato Nagakura

Mitsuo Hoshino

Masayuki Sugasawa

Kunioki Takahashi

Kenji Hirano

Yuki Takanezawa

Takashi Limori

A charge state calculation device includes a detection means for detecting the voltage and/or the current of a battery, a charge state calculation means for calculating the charge state of the battery, a full charge detection means for detecting the full charge of the battery, a correction value calculation means for calculating, when the full charge of the battery is detected, a correction value for correcting the charge state to the charge state of 100%, a correction means for correcting a charge state by the correction value, and a display means for displaying the charge state thus corrected by the correction means. The correction value calculation means updates the correction value only when the full charge of the battery is detected, and maintains the updated correction value until next time the full charge of the battery will be detected.

Charge state calculation device and charge state calculation method

A residual capacity calculation apparatus for a battery includes a current detection device to detect a charge/discharge current of the battery and a voltage detection device to detect an open circuit voltage of the battery, and a controller. The controller is configured to calculate a first residual capacity based on an integrated value of the charge/discharge current of the battery, calculate a second residual capacity based on the open circuit voltage of the battery, determine a blend rate of the second residual capacity based on a deviation between the first residual capacity and the second residual capacity, calculate a post-combination residual capacity by subjecting the first residual capacity and the second residual capacity to weighted combination with use of the blend rate, and increase the blend rate as the deviation between the first residual capacity and the second residual capacity increases.

Control device and control method for electric vehicle

A charge control device that charges a battery to a predetermined charging rate using an output power from a charger includes a charger control means that controls the output power of the charger based on a first map indicative of the relationship of the charge power with respect to the state of the battery and the charge time of the battery, and an allowable charge time calculation means that calculates the allowable charge time of the battery charge time. The charge control device refers to the first map for calculating the charge power with which to charge the battery in the allowable charge time, and controls the output power of the charger according to the charge power calculated based on the allowable charge time.

Charge control device and charge control method

A charge control device that charges a battery using a power output from a charger has a charge state (SOC) calculation unit for calculating the SOC of the battery using the voltage and current of the battery, a charger control unit that controls a charger that charges the battery, and a charge time calculation unit for calculating, on the basis of the SOC calculated by the SOC calculation unit, the remaining charge time of the battery till the SOC of the battery reaches a prescribed SOC. When the charge current falls below a current threshold, the charger control unit sends intermittent power commands to the charger based on the prescribed SOC, and the charge time calculation unit subtracts, from the charge time calculated when the charge current has fallen below the current threshold, predetermined time values based on the power commands.

Charge control device and charge time calculation method

A charge control device includes a charge state (SOC) calculation unit that calculates the SOC of a battery using the voltage and current of the battery. A chargeable power calculation unit calculates the power with which to charge the battery and a charge power calculation unit calculates the charge power to be supplied from the charger. A charge time calculation unit uses a map that correlates in part combinations of charge state values and charge power values to output charge time values is used by the charge state calculation unit when the chargeable power is greater than the outputtable power. When the chargeable power for charging is less than the outputtable power, the charge time calculation unit calculates the remaining charge time by using the map to reduce the remaining charge time determined from the map.

A charging device includes charging power detection unit and full charge determination unit. The charging device further includes charging control unit adapted to repeatedly execute a additional charging control until the number of times of the full charge determination reaches a predetermined full charge determination count. The charging device further includes unit adapted to detect the temperature of the secondary battery, and full charge determination count setting unit adapted to set a larger full charge determination count as the temperature decreases at least based on the temperature of the secondary battery when the full charge determination is made.

Charging device for secondary battery and charging method for secondary battery

Provided is a battery temperature control device configured to automatically heat a battery with a battery-driven heater so that the battery does not freeze at a minimum electric power consumption when the battery is out of use. The battery temperature control device predicts, based on a combination of a battery temperature and an outside air temperature, a predictive time that the battery temperature is likely to be less than a first set temperature, while the battery temperature is higher than or equal to the first set temperature at which there is no risk of freezing, and sets the predictive time as the next controller startup time, and determines whether or not the battery temperature has fallen to below the first set temperature with a control program wakeup when the predictive time has expired, and battery-drives the heater when the battery temperature fall has occurred, to heat the battery.

Battery temperature control device

A charging device for a storage battery includes: a charging power source for supplying electric power to a storage battery; a charging electric power detecting device adapted to detect electric power charged to the storage battery; a full charge determining device adapted to make a full charge determination based on a detected value of the charging electric power detecting device; and a charging controlling device adapted to conduct charging control by charging the storage battery until the full charge determination is made, stopping charging when the full charge determination is made, restarting charging after a prescribed time period elapses from the stop of charging, and continuing charging until the full charge determination is made again. The charging device further includes a temperature detecting device adapted to detect a temperature of the storage battery; and a stop time setting device adapted to set a stop time based on at least the temperature of the storage battery at the full charge determination. The stop time setting device sets the stop time to be longer as the detected temperature of the temperature detecting device becomes lower.

Charging device for storage battery, and charging method for storage battery

When completion of timer charge before elapse of a designated time is designated by a timer charge reservation means for allowing a user to designate a predetermined charge time zone and a target amount of electric power to be charged to the battery, a timer charge start time is determined. Upon carrying out the timer charge, when it is predicted that the timer charge and battery heating are simultaneously carried out, a required amount of extension of a charge time period is determined so as to complete charge of the battery by the designated time, and starts charge of the battery at a time advanced relative to the timer charge start time by the required amount of extension of a charge time period. With this control, charge of the battery can be completed at a predetermined time without unnecessary enhancement in a required capacity of a battery heater.

Charge control apparatus for vehicle

At a timing of time tbattery temperature Tbat lowers to Tbat_start and a warm-up request occurs, SOC at this time is a level, like time t, which allows a vehicle to travel by itself up to a battery charging facility and allows a battery charger to be connected to the battery charging facility. Since a warm-up permission judging value is set to SOCs_low that is substantially 0 at time t, in response to judgment of 'SOC&#x2267;SOCs_low (&#x2248;0)', warm-up of the battery is carried out from time tas shown by a solid line, then Tbat can be increased from time t. A battery charge time can be thus shortened. With this, in order that the battery does not freeze while the battery is unused, a control that warms up the battery by a battery-driven heater is performed while shortening the battery charge time.

Even when temperature sensors () used in a device for warming a battery () being not in use by using a battery-driven heater () have failed, the battery () is prevented from freezing. Based on a battery temperature (Tb) and an outside air temperature (Ta), times (&#x394;tto &#x394;t) during which Tb will decrease down to a warming start temperature (Tb_start) are each set to the next controller startup time (&#x394;t). A controller () is started up every &#x394;t, at t, t, and t, and checks whether Tb&#x3c;Tb_start is satisfied or not. At twhen Tb&#x3c;Tb_start is satisfied, a heater () is battery-driven to warm the battery (). After twhen the outside air temperature sensor () fails, the outside air temperature (Ta) is set to a fixed value (Ta_const) and based on this Ta=Ta_const and the battery temperature (Tb), the above control is repeated. Accordingly, it is unlikely that the temperature information (Ta) from the outside air temperature sensor () that is at fault causes &#x394;t to become extremely long like &#x221e;, so that it is avoided that the heater () cannot be operated because the controller () cannot be started up and the battery () freezes.

When warming-up of a battery is in progress (S), a battery charge state at the warming-up start time of the battery is set to a battery hold capacity SOC(S, S), and a charge power for the battery is controlled so that a battery charge state SOC is kept at SOC. When a present time is in a timer charge reservation time (S), the charge power for the battery is controlled so that SOC becomes a full charge state SOC(S). Even if SOC has a tendency to temporarily decrease due to a rapid increase of heater consumption power just after start of warming-up of the battery, by keeping SOC at SOC(SOC=SOC), SOC can reach a full charge state as intended during the timer charge reservation time. A proportion of charge using low-priced midnight power is increased to a maximum then running cost can be suppressed.

Battery charging control device

Disclosed is an actuator device for an optical device. The actuator device includes a core arranged in an optical device inside of which an optical path passes through, a coil wound around the core, and a rotational magnet formed into an approximately cylindrical shape, at least one end of which includes a bearing portion in an axial direction, and which rotates according to a direction of a magnet field output from the core by electrifying the coil. The actuator device further includes a drive pin rotated in association with the rotational magnet, a base member securely supporting the core and rotatably supporting the rotating magnet, and an optical member moving in and out of the optical path based on rotation of the rotational magnet.

Actuator device for optical device and image-capture apparatus

An image-capturing device includes a lens barrel having therein an optical image-capturing system; a light control blade which opens and closes an optical path of the optical image-capturing system so as to control the amount of light entering the system; and a base body having a transmission hole through which the optical path extends and supporting the light control blade in a movable manner. The light control blade includes a multilayer laminate including a base material composed of a film and serving as a substrate, and at least a metallic layer disposed on the base material; and a light-blocking layer disposed on a first section of the multilayer laminate. A second section of the multilayer laminate not having the light-blocking layer disposed thereon defines a light adjustment filter for adjusting the amount of incident light. The first section having the light-blocking layer defines a light-blocking portion for blocking incident light.

Image-capturing device, light adjustment mechanism, and light control blade

A drive motor is proposed, which serves as a drive source for a movement mechanism constituting an iris for an optical path of an imaging system. The drive motor has a shaft serving as a center of rotation, a magnet, two-pole magnetized and rotated around the shaft, a turning arm engaged with movable members and turned integrally with the magnet, for moving the movable members in a direction associated with a turning direction, a stator coil wound in a direction perpendicular to a direction of rotation of the magnet and disposed in such a way to enclose the magnet from outside, a coil bobbin on which the stator coil is wound, a stator yoke disposed outside the coil bobbin and having a cylindrical circumferential surface part penetrated in an axial direction of the shaft, and position detection means for detecting a rotational position of the magnet.

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Sagamihara, Japan

Atsushi Takano