摘要:
A method and apparatus for controlling access to one or more memories in a rechargeable battery includes a switching circuit that connects the memory to a device data contact, and disconnects the memory from a charger data contact, when the rechargeable battery is connected only to a device powered by a battery. The switching circuit, however, connects the memory to the charger data contact and disconnects it from the device data contact. In some embodiments a second memory that contains a subset of the data in the first memory is connected to the device data contact when the first memory is connected to the charger data contact.
摘要:
A method and apparatus for controlling access to a logic circuit in a battery by one or more components connected to the battery includes the components initially providing no voltage to a data contact, and sampling a voltage level at the data contact to determine if another component is presently connected to the logic circuit. When the sampled voltage indicates no other component is presently accessing the logic circuit, the component applies a voltage to the logic circuit via the data contact and access the logic circuit. When the sampled voltage indicates that a prior-connected component is connected to the battery, the component uses a voltage level provided by the prior-connected component to access the logic circuit.
摘要:
A method and apparatus for determining whether to enable a functionality of a battery powered device upon connection to a battery is embodied by providing at least one voltage threshold in a memory of the battery that corresponds to a usable operating range limit of the battery and that is accessible by the battery powered device. Upon connection to the battery, the battery powered device acquires the voltage threshold or thresholds from the battery and programs itself with the threshold or thresholds. The battery powered device then compares a voltage of the battery to the threshold or threshold to determine whether the enable the functionality.
摘要:
Body-worn wireless electronic devices may be powered by one or more wireless power sources. These wireless power sources may comprise body-worn wireless power sources and non body-worn wireless power sources. The sources are detected by the electronic device and are either prioritized based on being body-worn or non body-worn. The selection of sources for powering the electronic device(s) may alternatively be made based on predetermined parameters associated with the power sources. Optimal power transfer is thus obtained for the electronic devices while being worn.
摘要:
A battery pack includes one or more battery cells disposed in a barrier structure that forms a flow channel to direct venting material from a battery cell experiencing a fault condition out of the battery pack in a way that allows expansion of the vented gas before it exits the battery pack. Where two or more battery cells are included in the battery pack, the barrier structure electrically and thermally insulates them from each other so that in the event of a battery cell venting, it will not affect other battery cells and cause a thermal runaway condition.
摘要:
A method and apparatus for multiplexing an electrical contact interface between two electrical devices uses a time differentiated enablement of two or more different circuit elements in a first electrical device that are accessed via the multiplexed contact by a second electrical device. A timing control circuit in the first electrical device enables and disables circuit elements in the first electrical device coupled to a shared information contact over time. The second electrical device interacts with a first circuit element during an initial period upon connection to the first electrical device, and then interacts with a second circuit element after the initial period.
摘要:
A charging apparatus (102), system (100) and method (500) are provided for charging and/or powering a wearable electronic device, such as electronic eyeglasses. The charging apparatus comprises an acoustic horn, a piezoelectric transducer, and charger circuitry for converting ultrasonic waves received at the horn into a charging signal. The charging signal is used for charging and/or powering the wearable electronic device while the device is being worn.
摘要:
A method and system for efficiency compliance in a wireless battery charging system includes a wireless power source that provides a wireless charging power signal to devices in proximity to the wireless power source. The devices have a receiving coil to receive electrical energy from the wireless charging power signal, and they communicate battery charging metrics to the wireless power source. The wireless power source uses the battery charging metrics to determine a predicted system efficiency to charge the devices over a period of time, and when the predicted efficiency is below an efficiency standard, the wireless power source undertakes an action to improve system efficiency.
摘要:
Disclosed herein are methods and systems for providing a ballast load for a magnetic resonance power source. One embodiment takes the form of a magnetic resonance power source that includes a source coil, a load-detection module, a tunable ballast coil circuit, and a controller programmed to carry out a set of functions. The set of functions includes obtaining, via the load-detection module, an estimated load on the source coil. The set of functions also includes decreasing the power received by the tunable ballast coil circuit from the source coil when the estimated load on the source coil is greater than a desired load on the source coil. The set of functions also includes increasing the power received by the tunable ballast coil circuit from the source coil when the estimated load on the source coil is less than the desired load on the source coil.
摘要:
A charging accessory (104) is provided. The charging accessory (104) comprises a mechanical attachment device, such as a clip (110), and a receive coil (112) integrated within the clip, the receive coil for receiving a wireless charging signal (118). A wearable lanyard (126) is coupled to the clip (110) for transferring power and charging signals. The charging accessory (104) can be worn and operated within a charging system (100) to power and charge a wearable electronic device (102).