Multi-protocol compatible fast charging control device

Abstract

The utility model discloses a multi-protocol compatible fast charging control device which is provided with a first interface unit, a second interface unit, a main control unit and a power supply control unit, the first interface unit is used for connecting power supply input equipment, and the second interface unit is used for connecting equipment to be charged. The main control unit obtains a fast charging protocol supported by the power input device or the to-be-charged device, and controls the power control unit to charge the to-be-charged device according to the fast charging protocol. The main control unit establishes fast communication and matches a corresponding fast charging protocol according to the power supply input device and the to-be-charged device which are connected to the first interface unit and the second interface unit respectively, and then the power supply control unit provides fast charging for the to-be-charged device through the power supply input device, so that adaptive matching of the power supply input device and the to-be-charged device can be realized; according to the fast charging control device, mutual conversion among multiple charging protocols can be realized without manual matching, the compatibility of the fast charging control device is improved, the circuit structure is simple, and the charging efficiency is also improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fast charging, and in particular relates to a fast charging control device compatible with multiple protocols. Background Art

[0002] At present, with the development of technology and the improvement of people's requirements for the convenience of using mobile phones, people require mobile phones to have the function of fast charging. The completion of the fast charging function requires a charging power adapter with a fast charging protocol and a mobile phone with a fast charging protocol. The mobile phone with a fast charging protocol and the adapter with a fast charging protocol are connected through a data cable to perform handshake communication, and fast charging is performed after the handshake is successful. Commonly used fast charging protocols include Qualcomm's QC (Quick Charge) fast charging protocol and PD (USB Power Delivery) fast charging protocol. However, usually according to the fast charging protocol supported by the mobile phone, it is necessary to match the corresponding USB power adapter. For charging different mobile phones, different power adapters or fast charging data cables need to be replaced, which results in the mobile phone being unable to charge in time or conveniently, affecting the charging efficiency. Utility Model Content

[0003] In response to the above problems, the utility model provides a multi-protocol compatible fast charging control device, which can effectively adaptively match different USB power adapters with the devices to be charged for fast charging, avoiding untimely charging or time-consuming and labor-intensive manual replacement, so as to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a multi-protocol compatible fast charging control device, the fast charging control device comprises a first interface unit, a second interface unit, a main control unit and a power control unit, the first interface unit, the second interface unit and the power control unit are connected to the main control unit, the first interface unit and the second interface unit are connected to the power control unit, and the first interface unit is connected to the second interface unit;

[0006] The first interface unit is used to connect to a power input device, and the second interface unit is used to connect to a device to be charged. The main control unit obtains the fast charging protocol supported by the power input device or the device to be charged, and the main control unit controls the power control unit to charge the device to be charged according to the fast charging protocol.

[0007] As a preferred embodiment of the above technical solution, the main control unit includes an MCU module and an LDO module, the first interface unit, the second interface unit, the power control unit, and the LDO module are connected to the MCU module, the first interface unit and the power control unit are connected to the LDO module, and the LDO module is used to provide a stable operating voltage to the MCU module.

[0008] As a preferred embodiment of the above technical solution, the fast charging control device also includes a data transmission unit, and the MCU module is connected to the first interface unit and the second interface unit through the data transmission unit.

[0009] As a preferred embodiment of the above technical solution, the MCU module includes a chip U1 of model QFN16_3X3 and a plurality of resistors connected to the chip U1.

[0010] As a preferred embodiment of the above technical solution, the LDO module includes a chip U2 of model HT7550, the input end of the chip U2 is connected to the drain of the power switch tube Q1, the output end of the chip U2 is connected to the input end of the chip U1, the gate of the power switch tube Q1 is connected to the chip U1, and the source of the power switch tube Q1 is grounded.

[0011] As a preferred embodiment of the above technical solution, the power switch tube Q1 is an NMOS tube.

[0012] As a preferred embodiment of the above technical solution, the power control unit includes a power switch tube Q3 and a power switch tube Q4, the drain of the power switch tube Q3 is connected to the second interface unit, the gate of the power switch tube Q3 is connected to the drain of the power switch tube Q4, the source of the power switch tube Q3 is connected to the first interface unit, the gate of the power switch tube Q4 is connected to the main control unit, and the source of the power switch tube Q4 is grounded.

[0013] As a preferred embodiment of the above technical solution, the first interface unit includes a USBA male head for connecting to a USBA adapter.

[0014] As a preferred embodiment of the above technical solution, the second interface unit includes a TYPEC male connector for connecting to a smart phone.

[0015] As a preferred embodiment of the above technical solution, the power switch tube Q3 is a PMOS tube, and the power switch tube Q4 is an NMOS tube.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By setting a first interface unit, a second interface unit, a main control unit and a power control unit, the first interface unit is used to connect a power input device, and the second interface unit is used to connect a device to be charged. The main control unit obtains the fast charging protocol supported by the power input device or the device to be charged, and the main control unit controls the power control unit to charge the device to be charged according to the fast charging protocol. The main control unit establishes fast communication and matches the corresponding fast charging protocol according to the power input device and the device to be charged connected to the first interface unit and the second interface unit respectively, and then provides fast charging for the device to be charged through the power control unit. This can achieve adaptive matching between the power input device and the device to be charged without manual matching, and can also achieve mutual conversion between multiple charging protocols, thereby improving the compatibility of the fast charging control device, simplifying the circuit structure, and improving the charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural block diagram of the multi-protocol compatible fast charging control device proposed in the utility model;

[0019] Figure 2 This is a working principle diagram of the multi-protocol compatible fast charging control device proposed in the utility model;

[0020] Figure 3 This is a circuit diagram of the main control unit proposed by the utility model;

[0021] Figure 4 This is a circuit diagram of the power control unit proposed by the utility model;

[0022] Figure 5 A circuit diagram of the first interface unit proposed in the utility model;

[0023] Figure 6 A circuit diagram of the second interface unit proposed by the utility model;

[0024] Figure 7 This is a circuit diagram of the data transmission unit proposed by the utility model.

[0025] The main component symbols are described as follows:

[0026] 100 - first interface unit; 110 - second interface unit; 120 - main control unit; 130 - MCU module; 140 - LDO module; 150 - power control unit; 160 - data transmission unit. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] See also Figure 1 and Figure 2 The utility model provides a multi-protocol compatible fast charging control device, the fast charging control device includes a first interface unit 100, a second interface unit 110, a main control unit 120 and a power control unit 150, the first interface unit 100, the second interface unit 110, the power control unit 150 are connected to the main control unit 120, the first interface unit 100, the second interface unit 110 are connected to the power control unit 150, and the first interface unit 100 is connected to the second interface unit 110;

[0029] The first interface unit 100 is used to connect to a power input device, and the second interface unit 110 is used to connect to a device to be charged. The main control unit 120 obtains a fast charging protocol supported by the power input device or the device to be charged, and the main control unit 120 controls the power control unit 150 to charge the device to be charged according to the fast charging protocol.

[0030] In this embodiment, the main control unit 120 includes an MCU module 130 and an LDO module 140. The first interface unit 100, the second interface unit 110, the power control unit 150, and the LDO module 140 are connected to the MCU module 130. The first interface unit 100 and the power control unit 150 are connected to the LDO module 140. The LDO module 140 is used to provide a stable working voltage to the MCU module 130. The fast charging control device also includes a data transmission unit 160. The MCU module 130 is connected to the first interface unit 100 and the second interface unit 110 through the data transmission unit 160. The MCU module 130 includes a chip U1 with a model number of QFN16_3X3 and a plurality of resistors connected to the chip U1. The LDO module 140 includes a chip U2 with a model number of HT7550. The input end of the chip U2 is connected to the drain of the power switch tube Q1, and the output end of the chip U2 is connected to the input end of the chip U1. The power switch tube The gate of Q1 is connected to the chip U1, the source of the power switch tube Q1 is grounded, the power switch tube Q1 is an NMOS tube, the power control unit 150 includes a power switch tube Q3 and a power switch tube Q4, the drain of the power switch tube Q3 is connected to the second interface unit 110, the gate of the power switch tube Q3 is connected to the drain of the power switch tube Q4, the source of the power switch tube Q3 is connected to the first interface unit 100, the gate of the power switch tube Q4 is connected to the main control unit 120, and the source of the power switch tube Q4 is grounded. The first interface unit 100 includes a USBA male connector for connecting a USBA adapter, the second interface unit 110 includes a TYPEC male connector for connecting a smart phone, the power switch tube Q3 is a PMOS tube, and the power switch tube Q4 is an NMOS tube.

[0031] It should be noted that the first interface is connected to the USBA adapter, and the second interface unit is connected to the IPHONE 15 series mobile phone. The fast charging protocol usually includes a handshake mechanism, which is an electronic dialogue process that allows the device (such as a mobile phone) and the charger to recognize each other and charge at the correct voltage and current. The handshake stage occurs after the device is plugged into the charger, and the device and the charger will exchange information, including the fast charging protocol version supported by the device, the maximum accepted current, etc. After the handshake is successful, the charger will adjust the output voltage and current according to the needs of the device. For example, some devices can accept higher voltage and current when the battery power is low to achieve fast charging, but when the battery power is close to full, the charger will reduce the voltage and current to protect the battery and extend its life. The fast charging control device can be a connector, a converter or a data cable. Taking the QC fast charging protocol and the PD fast charging protocol as examples, the QC protocol allows more power to be transmitted in the same time, thereby greatly improving the charging rate. The MCU module can convert the QC fast charging protocol into the PD fast charging protocol, which can improve the charging efficiency and safety of the device to be charged.

[0032] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the MCU module includes a chip U1, a resistor R1, a resistor R2, a resistor R4, a resistor R5, a resistor R6 and a resistor R7 connected to the chip U1 respectively, and the resistor R6, the resistor R7 and the resistor R1 are connected in parallel with the resistor R5; the LDO module includes a chip U2, a capacitor C29, a capacitor C30, a resistor R8 and a power switch tube Q1 connected to the chip U2, the capacitor C29 is 10uF / 25v and is located at the voltage input end of the chip U2, the capacitor C30 is 4.7uF / 10v and is located at the voltage output end of the chip U2, and the model of the power switch tube Q1 is a 2N7002 NMOS tube. The power control circuit includes a power switch tube Q3, a resistor R47, a resistor R3 and a power switch tube Q4, the model of the power switch tube Q3 is AP30P30Q, the signal of the power switch tube Q4 is 2N7002, and the resistor R47 and the resistor R3 are connected in parallel to the gate of the power switch tube Q3. The first interface unit includes four interfaces: VBUS, D+, D- and GND. The second interface unit includes a resistor R20 and a capacitor C16. The data transmission unit includes a resistor R38, a resistor R35, a resistor R36 and a resistor R32. The resistor R36 and the resistor R32 are connected in parallel to D+, and the resistor R35 and the resistor R38 are connected in parallel to D-.

[0033] Specifically, when the fast charge control device is connected to the line, the LDO module provides the working voltage to the MCU module, that is, the OUT of the chip U2 is electrically connected to the VDD of the chip U1, and the MCU module communicates with the power input device such as the adapter through the first interface unit, that is, the pins 9, 3, and 8 of the chip U1 are connected to the D+ and D- in the first chip unit through the D+ and D- of the data transmission unit, and the MCU module communicates with the device to be charged through the second interface unit, that is, the pins 9, 3, and 8 of the chip U1 are connected to the D+ and D- in the second interface unit through the D+ and D- of the data transmission unit. If the adapter is identified through the first interface unit as supporting the flash charge protocol, the MCU controls the voltage and current input by the adapter to the device to be charged through the power control unit to complete the flash charge of the device to be charged; if the device to be charged is identified through the second interface unit as supporting the fast charge protocol, the MCU controls the voltage and current input by the adapter to the device to be charged through the power control unit to complete the fast charge of the device to be charged. Among them, the pin 10 of the chip U1 is connected to the gate of the power switch tube Q4, and the drain of the power switch tube is connected to the VBUS of the second interface unit.

[0034] Among them, CC1 connected in parallel by resistors R1, R6, R7 and R5 in the MCU module is connected to pin CC1 of the second interface unit, and pins 14, 15, 16 of chip U1 and C22 connected by resistor R2 are connected to pin CC2 of the second interface unit. Chip U1 controls the on and off of pin C22 of the first interface unit by outputting high and low levels, thereby controlling the switching between the fast charge protocol and the super fast charge protocol. When pin CC2 is turned on, chip U1 switches to the super fast charge protocol, and vice versa, switches to the fast charge protocol. The LDO module and the power control unit can stably and accurately control the charging voltage and current in the circuit, thereby improving the safety and reliability of charging.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-protocol compatible fast charging control device, characterized in that: The fast charge control device comprises a first interface unit, a second interface unit, a main control unit and a power control unit, wherein the first interface unit, the second interface unit and the power control unit are connected to the main control unit, the first interface unit and the second interface unit are connected to the power control unit, and the first interface unit is connected to the second interface unit; The first interface unit is used to connect to a power input device, and the second interface unit is used to connect to a device to be charged. The main control unit obtains the fast charging protocol supported by the power input device or the device to be charged, and the main control unit controls the power control unit to charge the device to be charged according to the fast charging protocol.

2. The multi-protocol compatible fast charging control device according to claim 1, characterized in that: The main control unit includes an MCU module and an LDO module. The first interface unit, the second interface unit, the power control unit, and the LDO module are connected to the MCU module. The first interface unit and the power control unit are connected to the LDO module. The LDO module is used to provide a stable operating voltage to the MCU module.

3. The multi-protocol compatible fast charging control device according to claim 2, characterized in that: The fast charging control device also includes a data transmission unit, and the MCU module is connected to the first interface unit and the second interface unit through the data transmission unit.

4. The multi-protocol compatible fast charging control device according to claim 2, characterized in that: The MCU module includes a chip U1 of model QFN16_3X3 and a plurality of resistors connected to the chip U1.

5. The multi-protocol compatible fast charging control device according to claim 4, characterized in that: The LDO module includes a chip U2 of model HT7550, the input end of the chip U2 is connected to the drain of the power switch tube Q1, the output end of the chip U2 is connected to the input end of the chip U1, the gate of the power switch tube Q1 is connected to the chip U1, and the source of the power switch tube Q1 is grounded.

6. The multi-protocol compatible fast charging control device according to claim 5, characterized in that: The power switch tube Q1 is an NMOS tube.

7. The multi-protocol compatible fast charging control device according to claim 1, characterized in that: The power control unit includes a power switch tube Q3 and a power switch tube Q4, the drain of the power switch tube Q3 is connected to the second interface unit, the gate of the power switch tube Q3 is connected to the drain of the power switch tube Q4, the source of the power switch tube Q3 is connected to the first interface unit, the gate of the power switch tube Q4 is connected to the main control unit, and the source of the power switch tube Q4 is grounded.

8. The multi-protocol compatible fast charging control device according to claim 7, characterized in that: The first interface unit includes a USBA male connector for connecting to a USBA adapter.

9. The multi-protocol compatible fast charging control device according to claim 7, characterized in that: The second interface unit includes a TYPEC male connector for connecting to a smart phone.

10. The multi-protocol compatible fast charging control device according to claim 6, characterized in that: The power switch tube Q3 is a PMOS tube, and the power switch tube Q4 is an NMOS tube.

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