摘要:
Electric apparatus, computer apparatus, controller, and battery switching method and program is provided to prevent a system shutdown caused by a reduction of electric power from a battery. A computer apparatus is constructed to be able to accept and be powered by a rechargeable main battery and a rechargeable sub-battery. An embedded controller in the computer apparatus monitors a remaining capacity at a pre-specified temperature of the sub-battery under discharge by receiving information from CPU. When the monitored temperature exceeds a predetermined temperature and when the monitored remaining capacity becomes less than a predetermined capacity, the embedded controller receives electric power from the main battery by switching the power supply circuit to provide power from the main battery instead of the sub-battery.
摘要:
At least one embodiment of the invention provides a multi-modal rechargeable battery pack that can switch between charging algorithms dynamically. This dynamic switching can be accomplished in a wide variety of ways, for example via external command or automatically. At least one embodiment of the invention provides a system that can switch a multi-modal rechargeable battery pack between one or more of a runtime mode, a lifespan mode, and a quick charge mode.
摘要:
A DC/DC converter is disclosed. The DC/DC converter includes a first heavy-load electronic switch and a second heavy-load electronic switch connected in series between an input terminal and ground at a first output portion, a third light-load electronic switch and a fourth light-load electronic switch connected in series between the input terminal and ground at a second output portion, an output circuit, an output current measurement circuit, and a control circuit. The output circuit includes an inductor connected to the first and second output portions. The output current measurement circuit measures an output current. The control circuit, in response to an output of the output current measurement circuit, selects a combination of the first and second heavy-load electronic switches during a heavy load state, and selects a combination of the third and fourth light-load electronic switch during a light load state.
摘要:
A highly reliable protection element for a storage battery is provided. A protection element includes a low melting point metal body and heater elements. The low melting point metal body is connected to a charger side line and a storage battery side line of a charge/discharge circuit. The heater element is connected to the storage battery side line and a switch, and the heater element is connected to the charger side line and a switch. When the switches are operated, a voltage that is not affected by a voltage drop of the low melting point metal body is applied to one of the heater elements, so that the low melting point metal body can be reliably fused.
摘要:
Embodiments of the present invention provide a power supply unit capable of achieving noise reduction while maintaining efficiency under the light load state. A FET driver controls switching elements in either one of a Pulse Width Modulation (PWM) mode, an intermittent mode having a lower operating frequency than that in the PWM mode, and a noise-free mode having a higher operating frequency than an audible frequency range. The FET driver operates first in the intermittent mode under the light load state. A microphone collects noise generated from the surroundings of a power supply unit. When the level of an audio signal collected by the microphone exceeds a predetermined level, the FET driver transitions from the intermittent mode to the noise-free mode. In accordance with such an embodiment, the FET driver operates in the noise-free mode only when noise is actually generated.
摘要:
An apparatus for supplying power to a portable electronic device is disclosed. The apparatus includes a first receptacle to which an AC/DC adaptor is connectable, a second receptacle to which an electronic device is connectable, a battery charger for charging a battery using power supplied by the AC/DC adaptor, an output circuit for supplying power to the electronic device from the AC/DC adaptor when the AC/DC adaptor is connected to the apparatus, and supplies power to the electronic device from the battery when the AC/DC adaptor is not connected to the apparatus, and a control circuit for controlling the battery charger to supply power to the electronic device while charging the battery when the AC/DC adaptor is connected to the apparatus.
摘要:
A apparatus includes an AC adapter input, a main battery charger coupled to the input to charge a main battery, system logic to execute code stored on storage devices, and an expansion battery connector coupled to the input to provide sufficient current to enable charging of an expansion battery at a rate higher than a maximum charge rate of the main battery charger.
摘要:
A battery pack that can avoid an abnormal condition caused by heat generation associated with water adhesion to a connector part and a function stopping method of the battery pack are provided. A battery controller determines an abnormality and executes an operation of interrupting a charge/discharge path for a battery set formed by a charge/discharge circuit, when a detected temperature of a connector is equal to or more than a first threshold, and also a discharge current is equal to or more than a second threshold and/or a difference between the detected temperature of the connector and a detected temperature of another part (a discharge protection switch, a charge protection switch, and the battery set) is equal to or more than a third threshold.
摘要:
An electrical apparatus includes a body for consuming power; a battery for supplying power to the body, wherein the body is capable of detecting an installation of the battery into the body, correlating the installation of the battery to a current real-time date, and displaying the date on which the battery was first installed in the body; and a display of a full charge capacity of the battery, the full charge capacity being calculated by comparing an actual present capacity of the battery to an estimated present capacity of the battery.
摘要:
A battery pack and method are disclosed that permanently disable the battery pack on portable electronic equipment if the battery pack has been inauthentically remanufactured. An output voltage value and a discharge current value of the battery block are measured regularly and an amount of change in the output voltage value per unit time is calculated. If the amount of change in the output voltage value per unit time or the discharge current value exceeds predetermined values, operation of an electric circuit involved in charge/discharge operations of the battery pack is permanently disabled.