A two-in-one charging circuit and device

Abstract

The utility model discloses a two in one charging circuit and equipment belongs to electric energy conversion technical field, including alternating current source management unit, DC power management unit and main control unit, the first end of alternating current source management unit is connected alternating current source, the second end output first direct current voltage and first direct current of alternating current source management unit, the first end of DC power management unit is connected direct current source, the second end output second direct current voltage and second direct current of DC power management unit, the second end of alternating current source management unit is connected the first end of DC power management unit, the main control unit is connected alternating current source management unit with DC power management unit. The utility model can be two way external power utilization equipment charging simultaneously independently, also can realize the fast charging demand of high -power power utilization equipment.

Description

Technical Field

[0001] This utility model relates to the field of power conversion technology, and in particular to a two-in-one charging circuit and device. Background Technology

[0002] With the widespread use of portable electronic devices, integrated charging devices that combine chargers and power banks have gained market favor due to their dual charging and energy storage functions. However, due to the strict requirements on product size for portability, these two-in-one charging devices are usually compact in internal space, resulting in relatively low output power, making it difficult to meet the fast charging needs of high-power devices (such as high-performance laptops and tablets). Utility Model Content

[0003] The present invention aims to provide a two-in-one charging circuit and device that can realize independent output or combined output of charger and power bank.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A two-in-one charging circuit includes an AC power management unit, a DC power management unit, and a main control unit. The first terminal of the AC power management unit is connected to an AC power source, and the second terminal of the AC power management unit outputs a first DC voltage and a first DC current. The first terminal of the DC power management unit is connected to a DC power source, and the second terminal of the DC power management unit outputs a second DC voltage and a second DC current. The second terminal of the AC power management unit is connected to the first terminal of the DC power management unit. The main control unit is connected to both the AC power management unit and the DC power management unit.

[0006] Furthermore, the AC power management unit includes a rectifier module, a voltage regulator module, and an AC power management chip. The first end of the rectifier module is connected to an AC power source, and the second end of the rectifier module is connected to the first end of the voltage regulator module. The second end of the voltage regulator module outputs a first DC voltage and a first DC current. The AC power management chip is connected to the rectifier module and the voltage regulator module, and the AC power management chip is also connected to the main control unit.

[0007] In one specific embodiment, the rectifier module is a full-bridge rectifier topology.

[0008] In one specific embodiment, the voltage regulation module is a flyback converter topology.

[0009] In one specific embodiment, the AC power management chip is a power management chip with the model number SC3107C.

[0010] Furthermore, the DC power management unit includes a DC-DC converter module and a DC power management chip. The first end of the DC-DC converter module is connected to a DC power supply, and the second end of the DC-DC converter module outputs a second DC voltage and a second DC current. The DC power management chip is connected to the DC-DC converter module and is also connected to the main control unit.

[0011] In one specific embodiment, the DC-DC converter module is a bidirectional buck-boost topology.

[0012] In one specific embodiment, the DC power management chip is a power management chip with the model number SC8815.

[0013] In one specific embodiment, the main control unit uses a control chip of model A94P830.

[0014] This utility model also provides a two-in-one charging device, including the aforementioned two-in-one charging circuit, and further including a battery, a first charging interface and a second charging interface. An AC power supply is connected to the first terminal of the two-in-one charging circuit, the battery is connected to the second terminal of the two-in-one charging circuit, the third terminal of the two-in-one charging circuit is connected to the first charging interface, and the fourth terminal of the two-in-one charging circuit is connected to the second charging interface.

[0015] Furthermore, the two-in-one charging device also includes a plug, through which the AC power management unit is connected to the AC power source.

[0016] Beneficial effects: This utility model provides a two-in-one charging circuit and device that functions as both a charger and a power bank. It can simultaneously and independently charge two external electrical devices via AC power, an internal battery, and two charging ports. Alternatively, it can connect the DC voltage obtained from the AC power supply in parallel with the battery, combining them into a single output to charge external electrical devices, thus meeting the fast charging needs of high-power electrical devices. Furthermore, this utility model's two-in-one charging circuit and device also has the function of charging the internal battery via AC power.

[0017] To make the above-mentioned features and advantages of the utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a structural block diagram of a two-in-one charging circuit according to the present invention.

[0019] Figure 2 for Figure 1 Block diagram of the AC power management unit.

[0020] Figure 3 for Figure 1 Block diagram of the DC power management unit.

[0021] Figure 4 This is a circuit diagram of the rectifier module and the voltage regulator module.

[0022] Figure 5 This is a circuit diagram of a DC-DC converter module.

[0023] Figure 6 This is a structural block diagram of a two-in-one charging device according to the present invention. Detailed Implementation

[0024] To make the objectives and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Figure 1 This is a structural block diagram of a two-in-one charging circuit according to this utility model. Figure 1 As shown, the present invention provides a two-in-one charging circuit 1, which includes an AC power management unit 11, a DC power management unit 12, and a main control unit 13. The first terminal of the AC power management unit 11 is connected to an AC power source. AC The second terminal of the AC power management unit 11 outputs the first DC voltage V. o1 With the first DC current I o1 The first terminal of the DC power management unit 12 is connected to the DC power supply V. DC The second terminal of the DC power management unit 12 outputs a second DC voltage V. o2 With the second DC current I o2 The second end of the AC power management unit 11 is connected to the first end of the DC power management unit 12, and the main control unit 13 is connected to the AC power management unit 11 and the DC power management unit 12.

[0026] In one specific embodiment, when it is necessary to charge two external electrical devices, the main control unit 13 controls the AC power management unit 11 to transfer AC power u AC Transformed into the first DC voltage V o1 Simultaneously, the DC power management unit 12 controls the DC power supply V... DC Transformed into a second DC voltage V o2 First DC voltage V o1 With the second DC voltage V o2It can charge two external devices simultaneously and independently.

[0027] In another specific embodiment, when the main control unit 13 needs to charge an external power device, the main control unit 13 controls the AC power management unit 11 to transfer AC power u AC Transformed into the first DC voltage V o1 The first DC voltage V o1 With DC power supply V DC The two voltages are connected in parallel and converted into a second DC voltage V by the DC power management unit 12. o2 The circuits are combined into one to charge external electrical equipment, thus meeting the fast charging needs of high-power electrical equipment.

[0028] Optionally, DC power supply V DC It can be powered by a battery.

[0029] Furthermore, such as Figure 2 As shown, the AC power management unit 11 includes a rectifier module 111, a voltage regulator module 112, and an AC power management chip 113. The first end of the rectifier module 111 is connected to the AC power supply u. AC The second terminal of the rectifier module 111 is connected to the first terminal of the voltage regulator module 112, and the second terminal of the voltage regulator module 112 outputs a first DC voltage V. o1 With the first DC current I o1 The AC power management chip 113 is connected to the rectifier module 111 and the voltage regulation module 112, and the AC power management chip 113 is also connected to the main control unit 13.

[0030] More specifically, the rectifier module 111 converts the AC power supply u AC Rectified to a third DC voltage V bus The voltage regulating module 112 converts the third DC voltage V bus Adjust to the first DC voltage V o1 The AC power management chip 113 collects relevant voltage and current information from the rectifier module 111 and the voltage regulator module 112. The AC power management chip 113 also receives signals from the main control unit 13 and controls the switches in the rectifier module 111 and the voltage regulator module 112 to adjust the first DC voltage V output by the voltage regulator module 112. o1 With the first DC voltage I o1 .

[0031] Optionally, the rectifier module 111 may be a full-bridge rectifier topology.

[0032] In one specific embodiment, such as Figure 4 As shown, the rectifier module 111 specifically includes diodes D1, D2, D3, and D4, and the AC power supply u ACThe first terminal is connected to the anode of diode D1 and the cathode of diode D4. The cathode of diode D1 is connected to the cathode of diode D2. The anode of diode D2 is connected to the cathode of diode D3. The anode of diode D3 is connected to the anode of diode D4. A third DC voltage V is output between the cathode of diode D2 and the anode of diode D3. bus .

[0033] It should be noted that the rectifier module 111 of this application is not limited to the full-bridge rectifier topology, but also includes other topologies that can achieve the rectification function.

[0034] Optionally, the voltage regulation module 112 may be a flyback converter topology.

[0035] In one specific embodiment, such as Figure 4 As shown, the voltage regulating module 112 specifically includes a switch Q1, a transformer T1, a diode D5, and a capacitor C1, and a third DC voltage V. bus The first terminal is connected to the first terminal of the primary winding of transformer T1, and the second terminal of the primary winding of transformer T1 is connected to the third DC voltage V via switch Q1. bus The second terminal is connected to the anode of diode D5 at the first terminal of the secondary winding of transformer T1, and the cathode of diode D5 is connected to the first terminal of capacitor C1. The second terminal of capacitor C1 is connected to the second terminal of the secondary winding of transformer T1, and the second terminal of capacitor C1 outputs the first DC voltage V. o1 With the first DC current I o1 .

[0036] It should be noted that the voltage regulation module 112 of this application is not limited to flyback converter topology, but also includes other topologies that can realize the function of regulating DC voltage to another DC voltage.

[0037] Optionally, the AC power management chip 113 may be a power management chip of model SC3107C.

[0038] Furthermore, such as Figure 3 As shown, the DC power management unit 12 includes a DC-DC converter module 121 and a DC power management chip 122. The first terminal of the DC-DC converter module 121 is connected to a DC power supply V. DC The second terminal of the DC-DC converter module 121 outputs a second DC voltage V. o2 With the second DC current I o2 The DC power management chip 122 is connected to the DC-DC converter module 121, and the DC power management chip 122 is also connected to the main control unit 13.

[0039] More specifically, the DC-DC converter module 121 converts the DC power supply V... DC Transformed into a second DC voltage Vo2 The DC power management chip 122 collects relevant voltage and current information from the DC-DC converter module 121. The DC power management chip 122 also receives signals from the main control unit 13 and controls the switch drive in the DC-DC converter module 121 to adjust the second DC voltage V output by the DC-DC converter module 121. o2 With the second DC voltage I o2 .

[0040] Optionally, the DC-DC converter module 121 is a bidirectional converter topology.

[0041] More specifically, the DC-DC converter module 121 is a bidirectional buck-boost topology, such as... Figure 5 As shown, it specifically includes inductor L1, resistor R1, switch Q2, diode D6, capacitor C1, and DC power supply V. DC The first terminal is connected to the first terminal of resistor R1 via inductor L1, and the second terminal of resistor R1 is connected to DC power supply V via switch Q2. DC The second terminal of switch Q2 is connected to the anode of diode D6, the cathode of diode D6 is connected to the first terminal of capacitor C2, the second terminal of capacitor C2 is connected to the second terminal of switch Q2, and the second terminal of capacitor C2 outputs the second DC voltage V. o2 With the second DC current I o2 .

[0042] It should be noted that the DC-DC converter module 121 of this application is not limited to a bidirectional buck-boost topology, but also includes other topologies that can realize bidirectional DC-DC conversion function.

[0043] Optionally, the DC power management chip 122 may be a power management chip of model SC8815.

[0044] Optionally, the main control unit 13 may use a control chip of model A94P830.

[0045] This utility model also provides a two-in-one charging device, such as... Figure 6 As shown, the two-in-one charging device includes a two-in-one charging circuit 1, a battery 2, a first charging interface 3 and a second charging interface 4, and an AC power supply u. AC The first end of the two-in-one charging circuit 1 is connected, the battery 2 is connected to the second end of the two-in-one charging circuit 1, the third end of the two-in-one charging circuit 1 is connected to the first charging interface 3, and the fourth end of the two-in-one charging circuit 1 is connected to the second charging interface 4.

[0046] The two-in-one charging circuit 1 includes an AC power management unit 11, a DC power management unit 12, and a main control unit 13. The first terminal of the AC power management unit 11 is connected to an AC power source.AC The second terminal of the AC power management unit 11 outputs the first DC voltage V. o1 The first terminal of the DC power management unit 12 is connected to the battery 2, and the second terminal of the DC power management unit 12 outputs a second DC voltage V. o2 The second terminal of the AC power management unit 11 is connected to the first terminal of the DC power management unit 12. The main control unit 13 is connected to both the AC power management unit 11 and the DC power management unit 12. The main control unit 13 is also connected to the first charging interface 3 and the second charging interface 4. The battery 2 provides DC power V. DC .

[0047] More specifically, the main control unit 13 collects the charging voltage and charging current information required by the external electrical equipment connected to it from the first charging interface 3; the main control unit 13 collects the charging voltage and charging current information required by the external electrical equipment connected to it from the second charging interface 4.

[0048] In one specific embodiment, when two external electrical devices need to be charged and the battery 2's charge level is above a set range, indicating that the battery 2 can discharge, the main control unit 13, based on the charging voltage and charging current information collected from the first charging interface 3, controls the AC power management chip 113 to output drive signals for the switches in the rectifier module 111 and voltage regulation module 112, thereby discharging the AC power u. AC Transformed into the first DC voltage V o1 The battery 2 charges external devices through the first charging interface 3; the main control unit 13 controls the DC power management chip 122 to output the drive signal of the switch in the DC-DC converter module 121 based on the charging voltage and charging current information collected from the second charging interface 4, so as to convert the DC power V supplied by the battery 2 into DC power V. DC Transformed into a second DC voltage V o2 The device charges external devices through the second charging interface 4, thus enabling simultaneous and independent charging of two external devices.

[0049] In another specific embodiment, when it is necessary to charge an external power device and the battery 2's charge level is above a set range, indicating that the battery 2 can discharge, the main control unit 13, based on the charging voltage and charging current information collected from the second charging interface 4, controls the AC power management chip 113 to output drive signals for the switches in the rectifier module 111 and voltage regulation module 112, and controls the DC power management chip 122 to output drive signals for the switches in the DC-DC converter module 121, thereby converting the AC power supply u AC Transformed into the first DC voltage V o1 The first DC voltage V o1 With the DC power supply V provided by battery 2 DC The two voltages are connected in parallel and converted into a second DC voltage V by the DC-DC converter module 121.o2 The two circuits are combined into one circuit and pass through the second charging port 4 to charge external electrical devices, thereby meeting the fast charging needs of high-power electrical devices.

[0050] Optionally, when the battery level of battery 2 is below a set range, battery 2 will not supply power, and AC power will be supplied. AC External electrical devices can be charged via the first charging interface 3. Specifically, the main control unit 13 controls the AC power management chip 113 to output drive signals for the switches in the rectifier module 111 and the voltage regulation module 112 based on the charging voltage and charging current information collected from the first charging interface 3, thereby converting the AC power u AC Transformed into the first DC voltage V o1 The device charges external electrical equipment through the first charging port 3.

[0051] Optionally, when the battery 2's charge level is below a set range, the main control unit 13 can also control the AC power management chip 113 to output drive signals for the switches in the rectifier module 111 and voltage regulator module 112, thereby converting the AC power supply... AC Transformed into the first DC voltage V o1 Then, the battery 2 is charged through the DC-DC converter module 121.

[0052] Furthermore, the present invention provides a two-in-one charging device that also includes a plug (not shown in the figure), wherein the AC power management unit 11 is connected to the AC power source via the plug. AC connect.

[0053] Optionally, the first charging port 3 and the second charging port 4 may include, but are not limited to, USB-A, USB-C, and other interfaces.

[0054] In summary, this utility model provides a two-in-one charging circuit and device that functions as both a charger and a power bank. It can simultaneously and independently charge two external devices via AC power, an internal battery, and two charging ports. Alternatively, it can connect the DC voltage obtained from the AC power supply in parallel with the battery, combining them into a single output to charge external devices, thus meeting the fast charging needs of high-power devices. Furthermore, this utility model's two-in-one charging circuit and device also has the function of charging the internal battery via AC power.

[0055] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A two-in-one charging circuit, characterized in that, The system includes an AC power management unit, a DC power management unit, and a main control unit. The first terminal of the AC power management unit is connected to an AC power source, and the second terminal of the AC power management unit outputs a first DC voltage and a first DC current. The first terminal of the DC power management unit is connected to a DC power source, and the second terminal of the DC power management unit outputs a second DC voltage and a second DC current. The second terminal of the AC power management unit is connected to the first terminal of the DC power management unit. The main control unit is connected to both the AC power management unit and the DC power management unit.

2. The two-in-one charging circuit as described in claim 1, characterized in that, The AC power management unit includes a rectifier module, a voltage regulator module, and an AC power management chip. The first end of the rectifier module is connected to an AC power source, and the second end of the rectifier module is connected to the first end of the voltage regulator module. The second end of the voltage regulator module outputs a first DC voltage and a first DC current. The AC power management chip is connected to the rectifier module and the voltage regulator module, and is also connected to the main control unit.

3. The two-in-one charging circuit as described in claim 2, characterized in that, The rectifier module is a full-bridge rectifier topology.

4. The two-in-one charging circuit as described in claim 2, characterized in that, The voltage regulation module is a flyback converter topology.

5. The two-in-one charging circuit as described in claim 2, characterized in that, The AC power management chip is a power management chip with the model number SC3107C.

6. The two-in-one charging circuit as described in claim 1, characterized in that, The DC power management unit includes a DC-DC converter module and a DC power management chip. The first end of the DC-DC converter module is connected to a DC power supply, and the second end of the DC-DC converter module outputs a second DC voltage and a second DC current. The DC power management chip is connected to the DC-DC converter module and is also connected to the main control unit.

7. The two-in-one charging circuit as described in claim 6, characterized in that, The DC-DC converter module is a bidirectional buck-boost topology.

8. The two-in-one charging circuit as described in claim 6, characterized in that, The DC power management chip is a power management chip with the model number SC8815.

9. The two-in-one charging circuit as described in claim 1, characterized in that, The main control unit uses a control chip of model A94P830.

10. A two-in-one charging device, characterized in that, The device includes a two-in-one charging circuit as described in any one of claims 1-9, further comprising a battery, a first charging interface and a second charging interface, an AC power supply connected to the first terminal of the two-in-one charging circuit, the battery connected to the second terminal of the two-in-one charging circuit, a third terminal of the two-in-one charging circuit connected to the first charging interface, and a fourth terminal of the two-in-one charging circuit connected to the second charging interface.

11. The two-in-one charging device as described in claim 10, characterized in that, It also includes a plug, through which the AC power management unit is connected to the AC power source.

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