Wireless charge system

Abstract

The invention provides a wireless charge system, comprising a charge receiver and a charge transmitter. The charge receiver comprises a reception coil used for receiving electric power and a first magnet used for carrying the reception coil. The charge transmitter comprises a transmission coil used for transmitting electric power and a second magnet used for carrying the transmission coil and capable of moving inside the charge transmitter. The second magnet is attracted by the first magnet to move to an alignment position, thereby enabling the transmission coil and the reception coil to be aligned.

Description

technical field [0001] The present invention relates to a wireless charging system, and in particular to a wireless charging system in which a sending coil and a receiving coil can be automatically guided to an alignment position. Background technique [0002] Wireless charging technology mainly transmits power through the electromagnetic induction coil of the transmitter and receiver, so there is no need to use physical wiring connections. However, when the receiver is placed on the transmitter for charging, it is often impossible to accurately align the coils of the two, resulting in poor transmission efficiency, prolonging the charging time and wasting power. When the efficiency is too low, the system may even It will directly short circuit without action. [0003] Such as Figure 1A , Figure 1B as shown, Figure 1A It shows the situation where the two coils for electromagnetic induction are aligned in the horizontal direction. At this time, the coupling area is large ...

AI Technical Summary

Problems solved by technology

However, when the receiver is placed on the transmitter for charging, it is often impossible to accurately align the coils of the two, resulting in poor transmission efficiency, prolonging the charging time and wasting power. When the efficiency is too low, the system may even will directly short circuit without action

[0003] like Figure 1A , Figure 1B as shown, Figure 1A It shows the situation where the two coils for electromagnetic induction are aligned in the horizontal direction. At this time, the coupling area is large and the transmission efficiency is the best. Figure 1B It shows that the two coils are offset in the horizontal direction. At this time, the insufficient coupling area leads to a decrease in transmission efficiency.

Among the current products, the coil of the transmitter is directly fixed on the lower cover of the housing, which makes assembly easy, and because the user cannot accurately align the two coils when placing the receiver, so if figure 2 As shown, usually multiple sending coils are set on the transmitter side to form a coil array, which makes the placement of the receiver more flexible

But such setting will increase redundant power consumption, not economical and energy-saving

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