| 摘要 |
<p>Information about a battery pack, such as the battery pack type of the battery pack, is communicated to a recharging device, preferably a wireless communications device such as a cellular telephone, via an information signal generated by the battery pack so that the recharging device may automatically distinguish between a plurality of different battery pack types to identify the type of an attached battery pack. The identification signal may be a repeating type having a fixed frequency between a low voltage level and a high voltage level and a dwell time at the high value. The identification signal is communicated to the recharging device and averaged over time. The averaged identification signal is compared against a reference signal, such as the voltage level of the battery, to determine a ratio therebetween. A logic circuit portion of the recharging device, such as a microprocessor, then identifies the battery pack type of the battery pack based on this ratio by comparing the ratio to one or more predetermined values where each of the predetermined values is associated with a battery pack type. Based on the battery pack type identified, the recharging device adjusts its charging profile or otherwise optimizes its operational characteristics. Further, the identification may instead be based on some characteristic of the identification signal itself, such as duty cycle or time at a particular voltage level. In addition, the identification signal may be continuously generated or may be generated periodically, or for some short period of time following certain events such as a power-up or battery pack changeover. In some embodiments, the identification signal may contain additional or alternative information concerning the battery pack such as an indication of the number of recharge cycles the battery pack has been through.</p> |
