KEYLESS ENTRY DEVICE AND METHOD FOR POWERING THE KEYLESS ENTRY DEVICE

摘要

A keyless entry device and method for powering the keyless entry system, such as a key fob, are disclosed. The keyless entry device has a charging battery, a rechargeable battery, at least one long range function button for a long range function, and at least one short range function button for a short range function. The method includes charging the rechargeable battery using the charging battery, wherein the rechargeable battery has a larger burst current delivery capacity than the charging battery. The method further includes sending a short range transmission from the keyless entry device using at least one of: the charging battery, and the rechargeable battery, when the at least one short range function button is actuated. The method further includes sending a long range transmission from the keyless entry device at least one of: the charging battery, and the rechargeable battery, when the at least one long range function button is actuated.

主权项

1. A method for powering a keyless entry device for a vehicle, comprising:
providing the keyless entry device having a charging battery, a rechargeable battery, at least one long range function button for a long range function, and at least one short range function button for a short range function; charging the rechargeable battery using the charging battery; sending a short range transmission from the keyless entry device to the vehicle using at least one of: the charging battery, and the rechargeable battery, when the short range function is selected using the at least one short range function button; and sending a long range transmission from the keyless entry device to the vehicle using at least one of: the charging battery, and the rechargeable battery when the long range function is selected using the at least one long range function button, wherein the charging battery has a charging battery state of charge, the rechargeable battery has a larger burst current delivery capacity than the charging battery, and the rechargeable battery has a rechargeable battery state of charge.