A single-coil low-power self-wake-up all-in-one wireless charging mobile power supply

Abstract

The utility model provides a single-coil low-power self-wake-up all-in-one wireless charging mobile power supply, comprising a battery BAT, a diode D2, a mobile power supply charge / discharge management module, a wireless charging drive module, a wireless charging control module, an input / output interface, a battery protection circuit and a display module. The positive electrode of the battery BAT is connected to the positive electrode of the diode D1 and the mobile power supply charge / discharge management module, the negative electrode of the battery is connected to the battery protection circuit, and the negative electrode of the diode D1 is connected to the wireless charging drive module. Through the technical application of this solution, single-coil transmission can be realized to support charging of various types of wireless charging RX devices such as "mobile phones, earphone charging compartments, watches", etc., which greatly improves the compatibility of product applications. Compared with multi-coil transmission, the hardware circuit is simpler and the application cost is lower. When applied in products with compact PCB space, the design and development limitations are smaller, which reduces the difficulty of product design.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, and in particular to a single-coil low-power self-awakening all-in-one wireless charging mobile power supply. Background Art

[0002] Conventional wireless charging bases or wireless charging mobile power supplies on the market can only charge the mobile phone wirelessly after it wakes up. If you need to charge multiple types of wireless charging devices such as "mobile phones, earphone charging cases, watches", you need to press a button to start. This design can realize the self-wake-up and wireless charging function for different types of wireless charging devices. Summary of the invention

[0003] In order to make up for the deficiencies of the prior art, the embodiments of the present application solve the problems in the prior art by providing a single-coil, low-power, self-wake-up, all-in-one wireless charging mobile power supply.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A single-coil low-power self-wake-up all-in-one wireless charging mobile power supply comprises a battery BAT, a diode D2, a mobile power supply charge / discharge management module, a wireless charging drive module, a wireless charging control module, an input / output interface, a battery protection circuit and a display module. The positive electrode of the battery BAT is connected to the positive electrode of the diode D1 and the mobile power supply charge / discharge management module, the negative electrode of the battery is connected to the battery protection circuit, the negative electrode of the diode D1 is connected to the wireless charging drive module, the mobile power supply charge / discharge management module is also respectively connected to the wireless charging drive module, the wireless charging control module, the input / output interface and the battery protection circuit, the wireless charging drive module is also respectively connected to a transmitting coil TL, a capacitor C1 and a wireless charging control module, the wireless charging control module is also respectively connected to a display module, a capacitor C2 and a resistor R1, the other end of the capacitor C2 is connected to the other end of the resistor R1, the other end of the capacitor C1 and the other end of the transmitting coil TL, and the receiving coil RL is connected to an RX terminal.

[0006] As a further technical solution of the utility model: a button is also connected to the mobile power supply charge / discharge management module.

[0007] As a further technical solution of the utility model: the diode D1 is a Schottky diode D1.

[0008] As a further technical solution of the present invention: the display module adopts a liquid crystal display screen.

[0009] As a further technical solution of the utility model: the capacitor C1 and the capacitor C2 are both resonant capacitors.

[0010] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0011] 1. Through the application of this solution technology, single-coil transmission can support charging of various types of wireless charging RX devices such as "mobile phones, earphone charging boxes, watches", which greatly improves the compatibility of product applications. Compared with multi-coil transmission, the hardware circuit is simpler and the application cost is lower. When applied to products with compact PCB space, the design and development limitations are smaller, which reduces the difficulty of product design;

[0012] 2. Combining the low-power self-wake-up application control of this solution with the wireless charging mobile power supply can also support the low-power standby of the whole machine to realize intelligent startup when encountering RX load, thereby realizing a truly buttonless wireless charging mobile power supply product. Compared with the conventional button or touch button startup on the market, it is smarter and more cost-effective, making the product design more diverse and flexible, and bringing a smarter user experience to the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the application of the wireless charging mobile power supply with buttons of the utility model;

[0014] Figure 2 This is a schematic diagram of the SOC wireless charging transmission application of the wireless charging mobile power supply with a button of the utility model;

[0015] Figure 3 This is a schematic diagram of the keyless application of the wireless charging mobile power supply of the utility model;

[0016] Figure 4 This is a schematic diagram of the application of the SOC wireless charging transmitter without buttons of the wireless charging mobile power supply of the utility model;

[0017] Figure 5 This is a schematic diagram of a single wireless charging application of the utility model;

[0018] Figure 6 This is a schematic diagram of the single SOC wireless charging and transmitting application of the utility model. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1:

[0020] Reference Figure 1-6A single-coil low-power self-wake-up all-in-one wireless charging mobile power supply comprises a battery BAT, a diode D2, a mobile power supply charge / discharge management module, a wireless charging drive module, a wireless charging control module, an input / output interface, a battery protection circuit and a display module. The positive electrode of the battery BAT is connected to the positive electrode of the diode D1 and the mobile power supply charge / discharge management module, the negative electrode of the battery is connected to the battery protection circuit, the negative electrode of the diode D1 is connected to the wireless charging drive module, the mobile power supply charge / discharge management module is also respectively connected to the wireless charging drive module, the wireless charging control module, the input / output interface and the battery protection circuit, the wireless charging drive module is also respectively connected to the transmitting coil TL, the capacitor C1 and the wireless charging control module, the wireless charging control module is also respectively connected to the display module, the capacitor C2 and the resistor R1, the other end of the capacitor C2 is connected to the other end of the resistor R1, the other end of the capacitor C1 and the other end of the transmitting coil TL, and the receiving coil RL is connected to the RX terminal. Embodiment 2:

[0021] On the basis of Example 1, Figure 1 As shown, a button is also connected to the mobile power supply charge / discharge management module. Embodiment 3:

[0022] On the basis of Example 1, Figure 3 As shown, by removing some structures, a single wireless charging circuit can be realized.

[0023] Here’s how it works:

[0024] When in standby mode, the battery provides power to the wireless charging transmitter through the Schottky diode D1. The wireless charging control intermittently drives the LC to resonate for low-power Q factor detection. When a metal foreign object or an RX terminal with wireless charging receiving function such as a "mobile phone, earphone charging case, or watch" is attached to the transmitting coil TL, the set Q threshold will be triggered to wake up the RX detection ping. The load is confirmed through the RX detection ping. When it is confirmed that the load is an RX terminal with wireless charging receiving function, the mobile power supply will be started and Digital Ping will be turned on to identify the RX terminal type. Based on the identified terminal type, the resonant coupling capacitor and frequency adapted by the S modulation are controlled by switching the switch to enter the power transmission stage and start wireless charging for the terminal.

[0025] The utility model provides a charging control scheme for a low-power self-wake-up single-coil transmitter compatible with various types of wireless charging devices. It does not require complex circuit multi-coil transmitter control. By switching and controlling the single-coil resonant capacitor, it can charge various types of wireless charging receiving terminal devices such as "mobile phones, earphone charging compartments, watches", etc., reducing the limitations and production costs of the development and design of all-in-one wireless charging products. In the wireless charging mobile power supply, low-power self-wake-up is achieved through wireless charging Q value detection. The standby low-power automatic identification load self-starting function can be achieved without mechanical buttons and touch buttons. It can be used as a buttonless wireless charging mobile power supply. At the same time, the low-power automatic identification load self-starting function brings a smarter user experience to the product.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0027] In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment have also been appropriately combined to form other implementation modes that are easy for those skilled in the art to understand.

Claims

1. A single-coil low-power self-wake-up all-in-one wireless charging mobile power supply, comprising a battery BAT, a diode D2, a mobile power supply charge / discharge management module, a wireless charging drive module, a wireless charging control module, an input / output interface, a battery protection circuit and a display module, characterized in that: The positive electrode of the battery BAT is connected to the positive electrode of the diode D1 and the mobile power supply charge / discharge management module, the negative electrode of the battery is connected to the battery protection circuit, the negative electrode of the diode D1 is connected to the wireless charging drive module, the mobile power supply charge / discharge management module is also respectively connected to the wireless charging drive module, the wireless charging control module, the input / output interface and the battery protection circuit, the wireless charging drive module is also respectively connected to the transmitting coil TL, the capacitor C1 and the wireless charging control module, the wireless charging control module is also respectively connected to the display module, the capacitor C2 and the resistor R1, the other end of the capacitor C2 is connected to the other end of the resistor R1, the other end of the capacitor C1 and the other end of the transmitting coil TL, and the receiving coil RL is connected to the RX terminal.

2. According to claim 1, a single-coil low-power self-wake-up all-in-one wireless charging mobile power supply, characterized in that: The mobile power supply charge / discharge management module is also connected with a button.

3. According to claim 1, a single-coil low-power self-wake-up all-in-one wireless charging mobile power supply, characterized in that: The diode D1 is a Schottky diode D1.

4. According to claim 1, a single-coil low-power self-wake-up all-in-one wireless charging mobile power supply, characterized in that: The capacitor C1 and the capacitor C2 are both resonant capacitors.

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