Embedded intelligent quick charger

Abstract

The utility model discloses an embedded intelligent rapid charger, comprising a first power conversion circuit, a second power conversion circuit, an intelligent charging identification circuit, a first charging circuit and a second charging circuit, the first power conversion circuit is electrically connected with the second power conversion circuit and the intelligent charging identification circuit respectively; the first charging circuit and the second charging circuit are electrically connected with the intelligent charging identification circuit. According to the embedded intelligent rapid charger disclosed by the utility model, the first power conversion circuit, the second power conversion circuit, the intelligent charging identification circuit, the first charging circuit and the second charging circuit are linked, intelligent charging identification is adopted, and the embedded intelligent rapid charger is adaptive to various electronic devices, and is high in universality and rapid in charging speed.

Description

Technical Field

[0001] The utility model belongs to the technical field of chargers, and in particular relates to an embedded intelligent fast charger. Background Art

[0002] With the rapid development of smart home and convenient office, most of the ordinary household walls at home and abroad have zero live wire socket switches. When upgrading to realize intelligent transformation, it is often required that new smart switches can directly replace the old mechanical wall switches. Many existing smart switches have problems such as only one charging port and low charging speed.

[0003] Therefore, further improvements are made to the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide an embedded intelligent fast charger, which is linked by a first power conversion circuit, a second power conversion circuit, an intelligent charging identification circuit, a first charging circuit and a second charging circuit, adopts intelligent charging identification, is suitable for a variety of electronic devices, has strong versatility, and has a fast charging speed.

[0005] To achieve the above objectives, the utility model provides an embedded intelligent fast charger, including a first power conversion circuit, a second power conversion circuit, an intelligent charging identification circuit, a first charging circuit (Type-C) and a second charging circuit (USBA), wherein the first power conversion circuit is electrically connected to the second power conversion circuit and the intelligent charging identification circuit respectively, and the first charging circuit and the second charging circuit are electrically connected to the intelligent charging identification circuit respectively, wherein:

[0006] The first power conversion circuit includes a power control chip U1 and a gallium nitride power tube Q1, wherein the pin 12 of the power control chip U1 is electrically connected to the pin 9 of the gallium nitride power tube Q1 through a resistor R14, and the pin 13 of the power control chip U1 is electrically connected to the pin 10 of the gallium nitride power tube Q1 through a resistor R13, the pin 15 of the power control chip U1 is electrically connected to the source of the field effect tube Q6, and the drain of the field effect tube Q6 is electrically connected to the pin 29 of the gallium nitride power tube Q1 through a resistor R17, the gate of the field effect tube Q6 is electrically connected to the drain of the field effect tube Q5, and the source of the field effect tube Q5 is grounded; the 23rd tube of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal (pin 4) of the transformer T1, and the output terminal (pins 7 and 8) of the transformer T1 is connected to the voltage output terminal V+ through the field effect tube Q2;

[0007] The second power conversion circuit includes a converter U5, the input end (pin 4) of the converter U5 is connected to the voltage output end V+, and the enable end (pin 3) of the converter U5 is electrically connected to the gate of the field effect transistor Q5 and the pin 14 of the power control chip U1 respectively;

[0008] The intelligent charging identification circuit includes a protocol identification chip U3, the first charging circuit includes a field effect transistor Q4 and a first charging interface P1 (Type-C interface), the 32 pin of the protocol identification chip U3 is electrically connected to the drain of the field effect transistor Q4 through resistors R34 and R36 in sequence, and the source of the field effect transistor Q4 is connected to the first charging interface P1, and the common terminal of the resistor R34 and the resistor R36 is connected to the voltage output terminal V+;

[0009] The second charging circuit includes a second charging interface P2 (USBA interface), and the second charging interface P2 is electrically connected to the protocol identification chip U3.

[0010] As a further preferred technical solution of the above technical solution, a resistor R8 is connected between the source and drain of the field effect transistor Q6, a resistor R9 is connected between the gate and source of the field effect transistor Q6, and a resistor R10 is connected between the gate and source of the field effect transistor Q6.

[0011] As a further preferred technical solution of the above technical solution, tube 23 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C21 and the inductor FB1, tube 24 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C20 and the inductor FB1, tube 25 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C18 and the inductor FB1, and tube 26 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C19 and the inductor FB1.

[0012] As a further preferred technical solution of the above technical solution, pin 4 of the second charging interface P2 is electrically connected to pin 23 of the protocol identification chip U3, pin 3 of the second charging interface P2 is electrically connected to pin 20 of the protocol identification chip U3 through resistor R58, and pin 2 of the second charging interface P2 is electrically connected to pin 21 of the protocol identification chip U3 through resistor R59.

[0013] As a further preferred technical solution of the above technical solution, the voltage output terminal V+ is grounded through an electrolytic capacitor EC2. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a first power conversion circuit diagram of an embedded intelligent fast charger of the utility model.

[0015] Figure 2 The utility model discloses a second power conversion circuit diagram of an embedded intelligent fast charger.

[0016] Figure 3 The utility model discloses an intelligent charging identification circuit and a first charging circuit diagram of an embedded intelligent fast charger.

[0017] Figure 4 This is a second charging circuit diagram of an embedded intelligent fast charger of the utility model. DETAILED DESCRIPTION

[0018] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0019] The utility model discloses an embedded intelligent fast charger. The specific embodiments of the utility model are further described below in conjunction with the preferred embodiments.

[0020] In the embodiments of the present invention, those skilled in the art will note that the resistors and the like involved in the present invention may be regarded as prior art.

[0021] Preferred embodiments.

[0022] like Figure 1-4 As shown, the utility model discloses an embedded intelligent fast charger, including a first power conversion circuit, a second power conversion circuit, an intelligent charging identification circuit, a first charging circuit (Type-C) and a second charging circuit (USBA), the first power conversion circuit is electrically connected to the second power conversion circuit and the intelligent charging identification circuit respectively, the first charging circuit and the second charging circuit are electrically connected to the intelligent charging identification circuit respectively, wherein:

[0023] The first power conversion circuit includes a power control chip U1 and a gallium nitride power tube Q1, wherein the pin 12 of the power control chip U1 is electrically connected to the pin 9 of the gallium nitride power tube Q1 through a resistor R14, and the pin 13 of the power control chip U1 is electrically connected to the pin 10 of the gallium nitride power tube Q1 through a resistor R13, the pin 15 of the power control chip U1 is electrically connected to the source of the field effect tube Q6, and the drain of the field effect tube Q6 is electrically connected to the pin 29 of the gallium nitride power tube Q1 through a resistor R17, the gate of the field effect tube Q6 is electrically connected to the drain of the field effect tube Q5, and the source of the field effect tube Q5 is grounded; the 23rd tube of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal (pin 4) of the transformer T1, and the output terminal (pins 7 and 8) of the transformer T1 is connected to the voltage output terminal V+ through the field effect tube Q2;

[0024] The second power conversion circuit includes a converter U5, the input end (pin 4) of the converter U5 is connected to the voltage output end V+, and the enable end (pin 3) of the converter U5 is electrically connected to the gate of the field effect transistor Q5 and the pin 14 of the power control chip U1 respectively;

[0025] The intelligent charging identification circuit includes a protocol identification chip U3, the first charging circuit includes a field effect transistor Q4 and a first charging interface P1 (Type-C interface), the 32 pin of the protocol identification chip U3 is electrically connected to the drain of the field effect transistor Q4 through resistors R34 and R36 in sequence, and the source of the field effect transistor Q4 is connected to the first charging interface P1, and the common terminal of the resistor R34 and the resistor R36 is connected to the voltage output terminal V+;

[0026] The second charging circuit includes a second charging interface P2 (USBA interface), and the second charging interface P2 is electrically connected to the protocol identification chip U3.

[0027] Specifically, a resistor R8 is connected between the source and drain of the field effect transistor Q6, a resistor R9 is connected between the gate and source of the field effect transistor Q6, and a resistor R10 is connected between the gate and source of the field effect transistor Q6.

[0028] More specifically, tube 23 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C21 and the inductor FB1, tube 24 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C20 and the inductor FB1, tube 25 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C18 and the inductor FB1, and tube 26 of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C19 and the inductor FB1.

[0029] Furthermore, pin 4 of the second charging interface P2 is electrically connected to pin 23 of the protocol identification chip U3, pin 3 of the second charging interface P2 is electrically connected to pin 20 of the protocol identification chip U3 through resistor R58, and pin 2 of the second charging interface P2 is electrically connected to pin 21 of the protocol identification chip U3 through resistor R59.

[0030] Furthermore, the voltage output terminal V+ is grounded through the electrolytic capacitor EC2.

[0031] For this utility model:

[0032] By adding a wall charger design concept to the intelligent switch, the wall charger module can be installed in the socket when decorating and renovating existing offices and houses, and the old AC socket can be replaced by a USB wall charger.

[0033] The innovative soft-switching half-bridge GaN solution is used, and the variable frequency PWM control chip is used to realize the intelligent control function of the output voltage through the PD protocol chip and MCU. The application of the latest semiconductor GaN technology, the research and application of AHB topology, makes the volume of the fast charging power supply 50% smaller than that of the power supply developed by the traditional MOS technology, and the efficiency is about 2-4% higher. By adopting the soft-switching half-bridge GAN solution, the operating frequency of the entire power supply is designed to 150-220KHZ, making the volume of the power supply smaller. The Power Delivery (PD) protocol is adopted. By using the communication protocols such as PPS, PD, QC, AFC, FCP, SCP, PE, etc., the smaller volume and higher efficiency also make the traditional bulky power adapter become compact and exquisite, thereby achieving high power density.

[0034] In addition, it provides the convenience of fast charging when charging without an adapter, and also improves the neatness. It can basically meet the application of products compatible with charging protocols such as mobile phones, notebooks, and thin and light tablets, achieving environmental protection, energy saving and improvement of quality of life.

[0035] Working control principle: The power supply obtains an adjustable output voltage through the power conversion circuit. The main body is controlled by the power control chip U1 to control the gallium nitride power tube Q1 to perform switching power conversion. The energy transfer is carried out through the transformer T1 for safe isolation control, and the input AC power is converted into the DC voltage required for device charging.

[0036] The circuit uses a new generation of semiconductor power tube gallium nitride to adjust the conduction time of the high-side switch tube and the conduction time of the low-side switch tube in the half-bridge structure of the AHB flyback converter, so that the low-side switch tube and the high-side switch tube can achieve soft switching (i.e. zero voltage switch, zero voltage switch, ZVS) function. Compared with conventional power tubes, this device has the advantages of small size, high power density, high operating frequency, etc., which can greatly reduce the size of charging equipment.

[0037] When the device is plugged into the port for charging, the power supply has a built-in protocol identification chip U3, which can identify different smart devices and adjust the power conversion circuit, thereby adjusting the output voltage and current of the power supply. The main output voltage is then adjusted to 5V through the U5 chip. At this time, the charging voltage and current can be 5V0-2.4A, 5V0-3A, 9V0-3A, 12V0-3A, 15V0-3A, and 20V0-3A respectively. The above six voltages can greatly increase the adaptability of the power supply. Multiple output voltages and currents are realized to supply power to charging devices with different needs.

[0038] In addition, the output voltage or current is adjusted through U3 control to achieve 1.4 times the rated power for 10 minutes and then reduced to the rated power again.

[0039] It is worth mentioning that the technical features such as resistors involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0040] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An embedded intelligent fast charger, characterized in that: The device comprises a first power conversion circuit, a second power conversion circuit, an intelligent charging identification circuit, a first charging circuit and a second charging circuit, wherein the first power conversion circuit is electrically connected to the second power conversion circuit and the intelligent charging identification circuit respectively, and the first charging circuit and the second charging circuit are electrically connected to the intelligent charging identification circuit respectively, wherein: The first power conversion circuit includes a power control chip U1 and a gallium nitride power tube Q1, wherein the pin 12 of the power control chip U1 is electrically connected to the pin 9 of the gallium nitride power tube Q1 through a resistor R14, and the pin 13 of the power control chip U1 is electrically connected to the pin 10 of the gallium nitride power tube Q1 through a resistor R13, the pin 15 of the power control chip U1 is electrically connected to the source of the field effect tube Q6, and the drain of the field effect tube Q6 is electrically connected to the pin 29 of the gallium nitride power tube Q1 through a resistor R17, the gate of the field effect tube Q6 is electrically connected to the drain of the field effect tube Q5, and the source of the field effect tube Q5 is grounded; the 23rd tube of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1, and the output terminal of the transformer T1 is connected to the voltage output terminal V+ through the field effect tube Q2; The second power conversion circuit includes a converter U5, the input end of the converter U5 is connected to the voltage output end V+, and the enable end of the converter U5 is electrically connected to the gate of the field effect transistor Q5 and the 14th pin of the power control chip U1 respectively; The intelligent charging identification circuit includes a protocol identification chip U3, the first charging circuit includes a field effect transistor Q4 and a first charging interface P1, the 32 pin of the protocol identification chip U3 is electrically connected to the drain of the field effect transistor Q4 through resistors R34 and R36 in sequence, and the source of the field effect transistor Q4 is connected to the first charging interface P1, and the common terminal of the resistor R34 and the resistor R36 is connected to the voltage output terminal V+; The second charging circuit includes a second charging interface P2 , and the second charging interface P2 is electrically connected to the protocol identification chip U3 .

2. An embedded intelligent fast charger according to claim 1, characterized in that: A resistor R8 is connected between the source and drain of the field effect transistor Q6, a resistor R9 is connected between the gate and source of the field effect transistor Q6, and a resistor R10 is connected between the gate and source of the field effect transistor Q6.

3. An embedded intelligent fast charger according to claim 2, characterized in that: The 23rd tube of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C21 and the inductor FB1, the 24th tube of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C20 and the inductor FB1, the 25th tube of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C18 and the inductor FB1, and the 26th tube of the gallium nitride power tube Q1 is electrically connected to the fourth input terminal of the transformer T1 through the capacitor C19 and the inductor FB1.

4. The embedded intelligent fast charger according to claim 3, characterized in that: Pin 4 of the second charging interface P2 is electrically connected to pin 23 of the protocol identification chip U3, pin 3 of the second charging interface P2 is electrically connected to pin 20 of the protocol identification chip U3 through resistor R58, and pin 2 of the second charging interface P2 is electrically connected to pin 21 of the protocol identification chip U3 through resistor R59.

5. The embedded intelligent fast charger according to claim 4, characterized in that: The voltage output terminal V+ is grounded through the electrolytic capacitor EC2.

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