| 摘要 |
<p>A strap, which is worn on a wrist and connected to a terminal, is defined as a watch strap for convenience of explanation. One or a plurality of wireless charging coils for reception and a charging circuit are installed inside the watch strap and are connected to a terminal battery through the watch strap. When a user works while having a pad spread on a table, the pad including a plurality of wireless charging coils and a wireless transmission circuit for charging inside, the watch strap frequently comes close to a wireless transmission coil of the pad. Therefore, a magnetic field is formed by the wireless transmission coil. A voltage is generated in the wireless charging coil for reception due to the influence of the formed magnetic field and charges the battery through the charging circuit.</p> |
