A charging device satisfying conversion of different charging protocols

Abstract

The utility model discloses a kind of charging device satisfying different charging protocol conversion, by setting first interface unit, protocol transmission unit, power unit, main control unit and second interface unit, first interface unit connects external power supply and gives power conversion circuit power supply, power conversion circuit provides operating voltage for main control unit, main control unit obtains the first charging protocol of electronic equipment connected with second interface unit and is converted into second charging protocol that external power supply can identify, main control unit controls protocol transmission unit and first interface unit and transmits second charging protocol to external power supply, main control unit controls switch circuit according to second charging protocol and provides the output power corresponding to second charging protocol for electronic equipment, different charging protocol can be pre-burnt to main control unit, according to the charging protocol of identification electronic equipment, match the charging protocol that external power supply can identify, and the corresponding charging power is output to electronic equipment, improve electronic equipment charging efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of charging conversion technology, and in particular relates to a charging device that meets the conversion requirements of different charging protocols. Background Technology

[0002] Currently, with the continuous development of technology and the constant improvement of people's living standards, users are carrying an increasing variety of electronic products, such as mobile phones, tablets, laptops, and Bluetooth headsets. The power consumption of these electronic products is gradually increasing, necessitating charging. However, when charging electronic products, the charging protocols of the data cable and the electronic product are inconsistent. Since the charging protocols of each electronic product must match the charging protocol of the adapter to achieve fast charging, a converter is required. However, existing electronic product converters have relatively complex circuit structures, making it difficult to meet users' demands for fast charging. Therefore, there is an urgent need to provide a charging device that can convert between different charging protocols to solve the aforementioned technical problems. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a charging device that can meet the conversion of different charging protocols. Different charging protocols can be pre-programmed into the main control unit, and the charging protocol that the external power supply can recognize can be matched according to the charging protocol of the identified electronic device. The device then outputs the corresponding charging power to the electronic device, thereby improving the charging efficiency of the electronic device and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a charging device that meets the conversion of different charging protocols, including a first interface unit, a protocol transmission unit, a power supply unit, a main control unit, and a second interface unit. The power supply unit, the second interface unit, and the protocol transmission unit are all connected to the main control unit. The power supply unit and the protocol transmission unit are all connected to the first interface unit. The second interface unit is connected to the protocol transmission unit.

[0006] The power supply unit includes a power conversion circuit and a switching circuit, and the power conversion circuit, the main control unit, and the second interface unit are all connected to the switching circuit.

[0007] The first interface unit is used to connect to an external power source and supply power to the power conversion circuit. The power conversion circuit is used to provide operating voltage to the main control unit. The main control unit is used to acquire a first charging protocol of the electronic device connected to the second interface unit and convert it into a second charging protocol that the external power source can recognize. The main control unit controls the protocol transmission unit and the first interface unit to transmit the second charging protocol to the external power source. The main control unit controls the switching circuit to provide the electronic device with the output power corresponding to the second charging protocol according to the second charging protocol.

[0008] As a preferred embodiment of the above technical solution, the protocol transmission unit includes a PD input circuit and a PD output circuit, wherein the PD input circuit is connected to the first interface unit and the PD output circuit is connected to the second interface unit.

[0009] As a preferred embodiment of the above technical solution, both the PD input circuit and the PD output circuit include three parallel resistors.

[0010] As a preferred embodiment of the above technical solution, the power conversion circuit includes a chip U1, a capacitor C1, and a capacitor C2, wherein both capacitor C1 and capacitor C2 are connected to the chip U1.

[0011] As a preferred embodiment of the above technical solution, the chip U1 is model LR8321A-T33SOT23-3L.

[0012] As a preferred embodiment of the above technical solution, the switching circuit includes a power switch Q1, a capacitor C3, a TVS diode D1, resistors R1, R3, R7, R8, and a diode Q2. The capacitor C3 and the TVS diode D1 are connected in parallel to the drain of the power switch Q1. One end of the resistor R1 is connected to the source of the power switch Q1, and the other end of the resistor R1 and one end of the resistor R3 are connected to the gate of the power switch Q1. The other end of the resistor R3 is connected to the collector of the transistor Q2. One end of the resistor R7 and one end of the resistor R8 are connected in parallel to the base of the diode Q2. The emitter of the transistor Q2 is connected to the other end of the resistor R8 and grounded. The other end of the resistor R7 is connected to the main control unit.

[0013] As a preferred embodiment of the above technical solution, the main control unit includes a chip U2 with model number 9616B1-QFN20, and the power switch Q1 has model number AON7401 / DFN8.

[0014] As a preferred embodiment of the above technical solution, both the first interface unit and the second interface unit are Type-C interfaces.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By setting up a first interface unit, a protocol transmission unit, a power supply unit, a main control unit, and a second interface unit, the first interface unit connects to an external power source and supplies power to the power conversion circuit. The power conversion circuit provides operating voltage to the main control unit. The main control unit acquires the first charging protocol of the electronic device connected to the second interface unit and converts it into a second charging protocol that the external power source can recognize. The main control unit controls the protocol transmission unit and the first interface unit to transmit the second charging protocol to the external power source. The main control unit controls the switching circuit to provide the electronic device with the output power corresponding to the second charging protocol according to the second charging protocol. Different charging protocols can be pre-programmed into the main control unit. The main control unit matches the charging protocol that the external power source can recognize according to the recognized charging protocol of the electronic device and outputs the corresponding charging power to the electronic device, thereby improving the charging efficiency of the electronic device and enhancing the charging convenience of the charging device. Attached Figure Description

[0017] Figure 1 This is a structural block diagram of the charging device proposed in this utility model that satisfies the conversion between different charging protocols;

[0018] Figure 2 This is a circuit diagram of the power conversion circuit proposed in this utility model;

[0019] Figure 3 The circuit diagram is for the switching circuit proposed in this utility model;

[0020] Figure 4 This is a circuit diagram of the main control unit proposed in this utility model;

[0021] Figure 5 The circuit diagram is of the first interface unit proposed in this utility model;

[0022] Figure 6 This is a circuit diagram of the second interface unit proposed in this utility model;

[0023] Figure 7 This is a circuit diagram of the protocol transmission unit proposed in this utility model.

[0024] The symbols for the main components are explained below:

[0025] 10-First interface unit; 20-Protocol transmission unit; 21-PD input circuit; 22-PD output circuit; 30-Power supply unit; 31-Power conversion circuit; 32-Switching circuit; 40-Main control unit; 50-Second interface unit. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] See Figure 1 , Figure 2 and Figure 3 This utility model provides a charging device that meets the conversion of different charging protocols, including a first interface unit 10, a protocol transmission unit 20, a power supply unit 30, a main control unit 40, and a second interface unit 50. The power supply unit 30, the second interface unit 50, and the protocol transmission unit 20 are all connected to the main control unit 40. The power supply unit 30 and the protocol transmission unit 20 are all connected to the first interface unit 10. The second interface unit 50 is connected to the protocol transmission unit 20.

[0029] The power supply unit 30 includes a power conversion circuit 31 and a switching circuit 32. The power conversion circuit 31, the main control unit 40, and the second interface unit 50 are all connected to the switching circuit 32.

[0030] The first interface unit 10 is used to connect to an external power source and supply power to the power conversion circuit 31. The power conversion circuit 31 is used to provide operating voltage to the main control unit 40. The main control unit 40 is used to acquire a first charging protocol of the electronic device connected to the second interface unit 50 and convert it into a second charging protocol that the external power source can recognize. The main control unit 40 controls the protocol transmission unit 20 and the first interface unit 10 to transmit the second charging protocol to the external power source. The main control unit 40 controls the switching circuit 32 to provide the electronic device with the output power corresponding to the second charging protocol according to the second charging protocol.

[0031] In this embodiment, see Figure 4 and Figure 7The protocol transmission unit 20 includes a PD input circuit 21 and a PD output circuit 22. The PD input circuit 21 is connected to the first interface unit 10, and the PD output circuit 22 is connected to the second interface unit 50. Both the PD input circuit 21 and the PD output circuit 22 include three parallel resistors. The power conversion circuit 31 includes a chip U1, a capacitor C1, and a capacitor C2. The capacitors C1 and C2 are both connected to the chip U1. The model of the chip U1 is LR8321A-T33 SOT23-3L. The switching circuit 32 includes a power switch Q1, a capacitor C3, a TVS diode D1, resistors R1, R3, R7, R8, and a diode Q2. Capacitor C3 and TVS diode D1 are connected in parallel to the drain of power switch Q1. One end of resistor R1 is connected to the source of power switch Q1, and the other end of resistor R1 and one end of resistor R3 are connected to the gate of power switch Q1. The other end of resistor R3 is connected to the collector of transistor Q2. One end of resistor R7 and one end of resistor R8 are connected in parallel to the base of diode Q2. The emitter of transistor Q2 is connected to the other end of resistor R8 and grounded. The other end of resistor R7 is connected to the main control unit. The main control unit 40 includes a chip U2 of model 9616B1-QFN20, and the power switch Q1 is model AON7401 / DFN8. Both the first interface unit 10 and the second interface unit 50 are Type-C interfaces.

[0032] It should be noted that, for reference Figure 5 and Figure 6 The first interface unit 10 can connect to an adapter for power input, and the second interface unit 50 can connect to a mobile phone for power reception. The power conversion circuit 31 converts the input high-voltage power supply to a low-voltage output power supply; for example, the input power supply is 24V and the output power supply is 3.3V. The power switch Q1 in the switching circuit 32 is a PMOS transistor, which has the characteristic of being on at low level and off at high level. Transistor Q2 amplifies the current in the circuit to increase the charging power; the model of transistor Q2 is SS8050 / SOT-23. The PMOS transistor's V... DS 30V, V GS 20V, I D Greater than 7A, R DS With a resistance of less than 20mΩ, the TVS diode D1 provides surge protection. The first charging protocol can be a fast charging protocol (QC protocol or PE protocol). The first charging protocol and the second charging protocol can be the same or different.

[0033] Specifically, the first interface unit 10 is connected to pin 3 of chip U1, pin 2 of chip U1 is connected to pin 5 of chip U2, interface 1 of power switch Q1 is connected to pin 3 of chip U1, interface 8 of power switch Q1 is connected to the second interface unit 50, and resistor R7 in the switching circuit 32 is connected to pin 4 of chip U2. Resistors R2 and R4 in the PD input circuit 21 are connected to pins 20 and 19 of chip U2, respectively, and resistors R10 and R11 in the PD output circuit 32 are connected to pins 2 and 1 of chip U2, respectively. The main control unit 40 also includes resistors R12 and R13. One end of resistor R12 and one end of resistor R13 are connected to pins 16 and 17 of chip U2, respectively, and the other ends of resistors R12 and R13 are connected in parallel to pin 14 of chip U2.

[0034] Specifically, the first interface unit 10 includes a terminal P1 and an interface J1. Pin 2 of terminal P1 is connected to pin Dn1 of interface J1, pin 3 of terminal P1 is connected to pin Dp1 of interface J1, pin 4 of terminal P1 is connected to pin CC1 of interface J1, and a resistor R6 is connected to pins CC2 and GND of interface J1. The second interface unit 50 includes a terminal P2 and an interface J2. Pin 2 of terminal P2 is connected to pin Dn1 (D-) of interface J2, pin 3 of terminal P2 is connected to pin Dp1 (D+) of interface J2, and pin 4 of terminal P2 is connected to pin CC1 of interface J2. The first interface unit 10 provides a maximum output power of 120W to the second interface unit 50 through the power conversion circuit 31 and the switching circuit 32, thereby improving charging efficiency.

[0035] It should be understood that by setting up a first interface unit 10, a protocol transmission unit 20, a power supply unit 30, a main control unit 40, and a second interface unit 50, the first interface unit 10 connects to an external power source and supplies power to the power conversion circuit 31. The power conversion circuit 31 provides operating voltage to the main control unit 40. The main control unit 40 acquires the first charging protocol of the electronic device connected to the second interface unit 50 and converts it into a second charging protocol that the external power source can recognize. The main control unit 40 controls the protocol transmission unit 20 and the first interface unit 10 to transmit the second charging protocol to the external power source. The main control unit 40 controls the switching circuit 32 to provide the electronic device with the output power corresponding to the second charging protocol according to the second charging protocol. Different charging protocols can be pre-programmed into the main control unit 40. The main control unit 40 matches the charging protocol that the external power source can recognize according to the recognized charging protocol of the electronic device and outputs the corresponding charging power to the electronic device, thereby improving the charging efficiency of the electronic device and enhancing the charging convenience of the charging device.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A charging device that satisfies the conversion between different charging protocols, characterized in that, It includes a first interface unit, a protocol transmission unit, a power supply unit, a main control unit, and a second interface unit. The power supply unit, the second interface unit, and the protocol transmission unit are all connected to the main control unit. The power supply unit and the protocol transmission unit are both connected to the first interface unit. The second interface unit is connected to the protocol transmission unit. The power supply unit includes a power conversion circuit and a switching circuit, and the power conversion circuit, the main control unit, and the second interface unit are all connected to the switching circuit. The first interface unit is used to connect to an external power source and supply power to the power conversion circuit. The power conversion circuit is used to provide operating voltage to the main control unit. The main control unit is used to acquire a first charging protocol of the electronic device connected to the second interface unit and convert it into a second charging protocol that the external power source can recognize. The main control unit controls the protocol transmission unit and the first interface unit to transmit the second charging protocol to the external power source. The main control unit controls the switching circuit to provide the electronic device with the output power corresponding to the second charging protocol according to the second charging protocol.

2. The charging device for converting between different charging protocols according to claim 1, characterized in that, The protocol transmission unit includes a PD input circuit and a PD output circuit. The PD input circuit is connected to the first interface unit, and the PD output circuit is connected to the second interface unit.

3. The charging device for converting between different charging protocols according to claim 2, characterized in that, Both the PD input circuit and the PD output circuit include three parallel resistors.

4. The charging device for converting between different charging protocols according to claim 1, characterized in that, The power conversion circuit includes a chip U1, a capacitor C1, and a capacitor C2, with both capacitor C1 and capacitor C2 connected to the chip U1.

5. The charging device for converting between different charging protocols according to claim 4, characterized in that, The chip U1 is model LR8321A-T33 SOT23-3L.

6. The charging device according to claim 1 that satisfies the conversion between different charging protocols, characterized in that, The switching circuit includes a power switch Q1, a capacitor C3, a TVS diode D1, resistors R1, R3, R7, R8, and a diode Q2. Capacitor C3 and TVS diode D1 are connected in parallel to the drain of power switch Q1. One end of resistor R1 is connected to the source of power switch Q1, and the other end of resistor R1 and one end of resistor R3 are connected to the gate of power switch Q1. The other end of resistor R3 is connected to the collector of transistor Q2. One end of resistor R7 and one end of resistor R8 are connected in parallel to the base of diode Q2. The emitter of transistor Q2 is connected to the other end of resistor R8 and grounded. The other end of resistor R7 is connected to the main control unit.

7. The charging device for converting between different charging protocols according to claim 6, characterized in that, The main control unit includes a chip U2 with model number 9616B1-QFN20, and the power switch Q1 has model number AON7401 / DFN8.

8. The charging device for converting between different charging protocols according to claim 1, characterized in that, Both the first interface unit and the second interface unit are Type-C interfaces.

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