A high-power two-in-one charging device
The modularly designed high-power two-in-one charging device solves the problems of insufficient output power and excessive size of existing charging products, and realizes an efficient and safe charging solution for multiple scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUNAN JUSHEN ELECTRONICS CO LTD
- Filing Date
- 2026-04-17
- Publication Date
- 2026-07-03
Smart Images
Figure CN122338982A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of power supply equipment, and in particular to a high-power two-in-one charging device. Background Technology
[0002] With the rapid development and performance improvement of mobile phones and laptops, the demand for high-power charging products has surged. To address market demand, existing products have been improved to address the following shortcomings: 1. Insufficient output power, incompatible with charging high-power products; 2. Too large or require carrying multiple products; 3. Lack of power bank functionality, making it impossible to recharge devices promptly when out and about. Summary of the Invention
[0003] To address the aforementioned technical problems, this application provides a high-power two-in-one charging device.
[0004] The high-power two-in-one charging device provided in this application adopts the following technical solution.
[0005] A high-power two-in-one charging device, comprising:
[0006] A high-power two-in-one charging device, characterized in that it includes: a first power unit and a second power unit capable of being combined and separated; a power unit control circuit and a cooperative communication protocol are configured between the first power unit and the second power unit;
[0007] At least one of the power units' internal circuitry includes:
[0008] The AC input circuit is connected to the rectifier filter circuit and the high-frequency transformer and is controlled by the PWM controller.
[0009] The protocol and main control buck-boost module integrates a protocol control unit, a main control MCU, and a BuckBoost circuit.
[0010] The battery and the protection circuit board connected to the battery;
[0011] Display control circuit, used to drive an external TFT display screen;
[0012] The parallel bridge output terminal is used to achieve parallel power output when the first power unit and the second power unit are stacked.
[0013] By adopting the above technical solution, users only need to carry one power unit for daily light use, which greatly reduces travel weight and storage space; and can combine them when high-performance output is required.
[0014] Optionally, the AC input circuit is connected to the primary side of the high-frequency transformer via the rectifier and filter circuit; the secondary side of the high-frequency transformer is sequentially connected to the output rectifier and filter circuit and the AC port MOS.
[0015] The PWM controller is connected to the primary side of the high-frequency transformer, and the output terminal of the output rectifier and filter circuit is connected to the PWM controller via an optocoupler feedback loop to drive and regulate the energy transfer state.
[0016] Optionally, the battery is electrically connected to the protocol and main control buck-boost module via the protection board circuit;
[0017] The battery is equipped with an NTC cell temperature sampling circuit on its periphery; the NTC cell temperature sampling circuit is connected to the protocol and main control buck-boost module to collect the temperature characteristics of the battery in real time and feed them back to the main control MCU.
[0018] Optionally, the display control circuit includes a slave MCU and an image processor; the display control circuit is electrically connected to a FLASH memory.
[0019] The slave MCU and image processor control the output of the TFT display screen by reading data from the FLASH memory.
[0020] Optionally, the charging device further includes a C1 output port and a C2 output port; a port output MOS is connected in series on the power supply path of the C1 output port and the C2 output port respectively;
[0021] The protocol and the main control buck-boost module are respectively connected to the control terminal of the port output MOS to control the power distribution and output.
[0022] Optionally, the input terminals of the protocol and the main control buck-boost module are respectively connected to the output terminal of the AC port MOS and the output terminal of the protection board circuit to selectively receive AC-converted electrical energy or battery electrical energy.
[0023] The received electrical energy is processed by the internal BuckBoost circuit to step down or step up / down and then transmitted to the corresponding port output MOS.
[0024] Optionally, when the first power unit is independently connected to the AC power grid, the protocol and main control buck-boost module receives AC converted electrical energy via the AC port MOS and transmits it to the port output MOS to output a first preset power to the external load.
[0025] The protocol and the main control buck-boost module control part of the electrical energy to charge the battery through the protection board circuit.
[0026] Optionally, when the first power unit operates independently from the AC power grid, the electrical energy released by the battery enters the protocol and main control buck-boost module via the protection board circuit and is processed by the internal BuckBoost circuit before being transmitted to the port output MOS to supply power to the outside as an independent mobile power source.
[0027] Optionally, when the first power unit and the second power unit are stacked together, the first power unit and the second power unit synchronize data and status based on the cooperative communication protocol;
[0028] The electrical energy in the first power unit and the second power unit is combined in parallel through the parallel bridge output terminal and outputs a second preset power; the second preset power is greater than the first preset power.
[0029] Optionally, the charging device has a detachable and combinable structure, specifically including:
[0030] The first housing and the second housing are respectively used to encapsulate the internal components of the first power unit and the second power unit;
[0031] Electrical connectors and mechanical positioning components are disposed on the mating surfaces of the first housing and the second housing. The electrical connectors are in contact with each other and conduct electricity when the first power unit and the second power unit are assembled.
[0032] The PCB assembly is fixed inside the housing, and the AC input circuit, protocol and main control buck-boost module and protection board circuit are integrated on the PCB assembly.
[0033] An AC plug is connected to the outer casing of the charging device; and...
[0034] The TFT display screen is embedded in the outer surface of the corresponding housing. Attached Figure Description
[0035] Figure 1 This is a system block diagram of a high-power two-in-one charging device according to an embodiment of this application;
[0036] Figure 2 This is an exploded view of the structure of an embodiment of this application;
[0037] In the diagram, 1. Screen decorative piece; 2. Main body shell; 3. Button; 4. PCBA; 5. Button PCB; 6. Top cover; 7. Battery pack; 8. Bottom cover; 9. Spring contact; 10. Top shell; 11. Pressure plate; 12. Pin. Detailed Implementation
[0038] The following is in conjunction with the appendix Figure 1-2 The present application will be further described with reference to specific embodiments:
[0039] First, it should be noted that in the description of this application, the use of directional terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for descriptive purposes and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of numerical quantifiers such as "first," "second," and "third" is for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, interference fits, transition fits, or integral connections; they can refer to direct connections or indirect connections through an intermediate medium. Therefore, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0040] This application discloses a high-power two-in-one charging device. (Refer to...) Figure 1 and Figure 2 It includes: a first power unit and a second power unit capable of being combined and separated;
[0041] A power unit control circuit and a cooperative communication protocol are configured between the first power unit and the second power unit.
[0042] The internal circuitry of at least one power unit includes: an AC input loop connected to a rectifier filter circuit and a high-frequency transformer and controlled by a PWM controller;
[0043] The protocol and main control buck-boost module integrates a protocol control unit, a main control MCU, and a BuckBoost circuit.
[0044] The battery and the protection circuit board connected to the battery;
[0045] Display control circuit, used to drive an external TFT display screen;
[0046] The parallel bridge output terminal is used to achieve parallel power output when the first power unit and the second power unit are stacked.
[0047] The mechanical structure of the charging device is modular and detachable, specifically including: a first housing and a second housing, which are used to encapsulate the internal components of the first power unit and the second power unit, respectively; electrical connectors and mechanical positioning components, which are disposed on the mating surfaces of the first housing and the second housing. The electrical connectors are in contact with each other and conduction when the first power unit and the second power unit are assembled to form a parallel bridge output terminal and a collaborative communication data link; a PCB assembly, which is fixed inside the housing, and the AC input circuit, protocol and main control buck-boost module and protection board circuit are highly integrated on the PCB assembly; an AC plug, which is connected to the outer housing of the charging device; and a TFT display screen, which is embedded on the outer surface of the corresponding housing.
[0048] Specifically, the charging device consists of two independent and symmetrical power units. Each power unit has a complete front-end AC-DC conversion, a rear-end protocol step-down, and a battery energy storage system; all electronic components are integrated on their respective PCB assemblies with a 6-layer board wiring design, and are independently encased in either a first or second housing. On the mating surfaces of the two housings, in addition to mechanical positioning components for alignment and fixation, electrical connection terminals for high-voltage transmission and low-voltage communication are also provided.
[0049] The principle of the above technical solution is that it breaks the traditional charger design of fixing all power devices in a single shell; by using the cooperation of mechanical positioning parts and electrical connectors, two independent power units can be connected through contacts when high power is needed, thereby opening up their respective internal power unit control circuits and converging their respective independent energy output paths to the parallel bridge output terminal.
[0050] The advantages of the above technical solution are that users only need to carry one power unit when using it lightly in daily life, which greatly reduces travel weight and storage space; and they can combine them when high-performance output is required.
[0051] In some implementations, the AC input circuit is connected to the primary side of the high-frequency transformer via a rectifier and filter circuit; the secondary side of the high-frequency transformer is sequentially connected to an output rectifier and filter circuit and an AC port MOS; the PWM controller is connected to the primary side of the high-frequency transformer and the output terminal of the output rectifier and filter circuit is connected to the PWM controller via an optocoupler feedback loop to drive and regulate the energy transfer state.
[0052] Specifically, in the PCB circuit structure, the front-end of the AC input circuit sequentially includes a fuse, capacitor, common-mode inductor, and rectifier bridge. The AC mains power is rectified and filtered by a high-voltage electrolytic capacitor, then converted into primary high-voltage DC power, which is fed into the primary winding of the high-frequency transformer. A PWM controller located on the primary side, such as the SC3508A chip, is connected to and controls the gate of the high-voltage switching transistor via its drive pin, while simultaneously monitoring the primary-side peak current in real time through a source current sampling resistor. On the other side of the isolation boundary, the drive pin of the output rectifier and filter circuit is connected to the secondary synchronous rectifier MOSFET, utilizing extremely low on-resistance to smooth the secondary energy. An AC port MOSFET is connected in series on the main power supply path.
[0053] The principle of the above technical solution is as follows: The system uses an optocoupler feedback loop to convert the real-time voltage error signal at the end of the output rectifier and filter circuit into a photocurrent signal, which is fed back to the FB pin of the primary-side PWM controller. The PWM controller dynamically adjusts the duty cycle of the switching transistor to maintain the constant energy transmission of the high-frequency transformer. Then, the AC port MOS decides whether to release this part of the power to the subsequent system according to the master control instruction.
[0054] The beneficial effects of the above technical solution are as follows: the complete EMI filter array and optocoupler closed-loop regulation in the front stage ensure that the front stage system can output extremely pure and stable intermediate stage DC power when the high voltage mains power fluctuates or the load of the downstream stage changes suddenly.
[0055] In some embodiments, an NTC negative temperature coefficient thermistor is attached to the surface of the battery or in the adjacent area to form an NTC cell temperature sampling circuit, and its signal output terminal is directly connected to the main control MCU inside the protocol and main control buck-boost module.
[0056] The principle of the above technical solution is as follows: the battery charging and discharging process is jointly dominated by the main control MCU and the protection board circuit; the NTC cell temperature sampling circuit generates a linear change in resistance value as the battery temperature fluctuates, and the ADC pin of the main control MCU reads the voltage division value and calculates the current temperature in real time; when the temperature exceeds the safety threshold, the main control MCU immediately issues a command to cut off the protection board circuit or reduce the charging and discharging current.
[0057] The beneficial effects of the above technical solution are as follows: the design with built-in energy storage battery makes up for the defects of energy supply interruption in the off-grid scenario; and NTC sampling and feedback prevent the risk of thermal runaway of the battery cell under high power charging and discharging conditions, ensuring the safety of the modular sealed shell.
[0058] In some implementations, the display control circuit includes a slave MCU and an image processor; the display control circuit is electrically connected to a FLASH memory; the slave MCU and the image processor control the output of the TFT display screen by reading data from the FLASH memory.
[0059] Specifically, this application sets up an independent slave MCU and image processor at the hardware level and adds an external FLASH memory to display the current remaining power, real-time output power and stacking status.
[0060] In some embodiments, the charging device further includes a C1 output port and a C2 output port; a port output MOS is connected in series on the power supply path of the C1 output port and the C2 output port respectively; the protocol and main control buck-boost module are respectively connected to the control terminal of the port output MOS to control the power distribution and output.
[0061] The input terminals of the protocol and main control buck-boost module are connected to the output terminals of the AC port MOS and the protection board circuit, respectively, to selectively receive AC-converted electrical energy or battery power. The received electrical energy is then processed by the internal BuckBoost circuit to step down or buck-boost and then transmitted to the corresponding port output MOS.
[0062] The principle of the above technical solution is as follows: the protocol and the main control buck-boost module determine whether there is mains power connected externally, thereby controlling the AC port MOS to turn on or off, realizing selective access of two energy sources; the internal protocol control unit communicates with the external load through protocols such as PD to obtain the required voltage level; the main control MCU drives the internal BuckBoost circuit to perform buck-boost chopping, transmits the matched voltage to the subsequent stage, and delivers power to the C1 or C2 output port by driving the corresponding channel port output MOS.
[0063] In some implementations, when the first power unit operates independently connected to the AC power grid: AC-converted electrical energy is unidirectionally transmitted to the external load via the protocol and main control buck-boost module, outputting a first preset power; simultaneously, the protocol and main control buck-boost module controls a portion of the electrical energy to charge the battery via the protection board circuit. When the first power unit operates independently disconnected from the AC power grid: the electrical energy released by the battery enters the protocol and main control buck-boost module via the protection board circuit, and after processing by the internal BuckBoost circuit, it is transmitted to the port output MOS, acting as an independent mobile power supply to provide power to the outside. When the first power unit and the second power unit are stacked together: the first power unit and the second power unit synchronize data and status based on a cooperative communication protocol; the electrical energy in the first power unit and the second power unit is aggregated in parallel through the parallel bridge output terminal and outputs a second preset power, which is greater than the first preset power.
[0064] Specifically, when the socket is plugged in, the AC port MOS is turned on, and the main control module converts it into, for example, a maximum of 65W (the first preset power) and outputs it to the C port, while simultaneously diverting some energy to replenish the internal battery; when the socket is unplugged, the AC port MOS is turned off, switching to the battery power supply path, and the BuckBoost converter steps up and down to act as a regular power bank. When the electrical connectors of the two units are engaged, the two independent main control MCUs confirm their combined identity through a collaborative communication protocol and execute a current sharing algorithm; the maximum 65W of power converted by each unit is combined in parallel through the bridge output.
[0065] The principle behind the above technical solution is that the main control MCU determines the current physical environment by detecting the voltage signal at the AC input terminal and the status level of the electrical connector terminals. In parallel mode, the communication protocol ensures that the two independent modules output the same voltage value and similar current phase, avoiding circulating current losses. A single hardware combination meets all all-weather, multi-scenario charging needs.
[0066] It should be noted that the above embodiments are only used to illustrate this application and are not intended to limit the technical solutions described in this application. Although this specification has described this application in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this application. All technical solutions and improvements that do not depart from the spirit and scope of this application should be covered within the scope of the claims of this application.
Claims
1. A high-power two-in-one charging device, characterized in that, include: A first power unit and a second power unit capable of being combined and separated; a power unit control circuit and a cooperative communication protocol are configured between the first power unit and the second power unit. At least one of the power units' internal circuitry includes: The AC input circuit is connected to the rectifier filter circuit and the high-frequency transformer and is controlled by the PWM controller. The protocol and main control buck-boost module integrates a protocol control unit, a main control MCU, and a BuckBoost circuit. The battery and the protection circuit board connected to the battery; Display control circuit, used to drive an external TFT display screen; The parallel bridge output terminal is used to achieve parallel power output when the first power unit and the second power unit are stacked.
2. The high-power two-in-one charging device according to claim 1, characterized in that, The AC input circuit is connected to the primary side of the high-frequency transformer via the rectifier and filter circuit; the secondary side of the high-frequency transformer is connected in sequence to the output rectifier and filter circuit and the AC port MOS. The PWM controller is connected to the primary side of the high-frequency transformer, and the output terminal of the output rectifier and filter circuit is connected to the PWM controller via an optocoupler feedback loop to drive and regulate the energy transfer state.
3. The high-power two-in-one charging device according to claim 2, characterized in that, The battery is electrically connected to the protocol and main control buck-boost module via the protection board circuit; The battery is equipped with an NTC cell temperature sampling circuit on its periphery; the NTC cell temperature sampling circuit is connected to the protocol and main control buck-boost module to collect the temperature characteristics of the battery in real time and feed them back to the main control MCU.
4. A high-power two-in-one charging device according to claim 3, characterized in that, The display control circuit includes a slave MCU and an image processor; the display control circuit is electrically connected to a FLASH memory. The slave MCU and image processor control the output of the TFT display screen by reading data from the FLASH memory.
5. A high-power two-in-one charging device according to claim 4, characterized in that, The charging device also includes a C1 output port and a C2 output port; a port output MOS is connected in series on the power supply path of the C1 output port and the C2 output port respectively; The protocol and the main control buck-boost module are respectively connected to the control terminal of the port output MOS to control the power distribution and output.
6. A high-power two-in-one charging device according to claim 5, characterized in that, The input terminals of the protocol and the main control buck-boost module are respectively connected to the output terminal of the AC port MOS and the output terminal of the protection board circuit to selectively receive AC-converted electrical energy or battery electrical energy. The received electrical energy is processed by the internal BuckBoost circuit to step down or step up / down and then transmitted to the corresponding port output MOS.
7. A high-power two-in-one charging device according to claim 6, characterized in that, When the first power unit is independently connected to the AC power grid, the protocol and main control buck-boost module receives AC converted electrical energy via the AC port MOS and transmits it to the port output MOS to output the first preset power to the external load. The protocol and the main control buck-boost module control part of the electrical energy to charge the battery through the protection board circuit.
8. A high-power two-in-one charging device according to claim 7, characterized in that, When the first power unit operates independently from the AC power grid, the electrical energy released by the battery enters the protocol and main control buck-boost module via the protection board circuit and is processed by the internal BuckBoost circuit before being transmitted to the port output MOS to supply power to the outside as an independent mobile power source.
9. A high-power two-in-one charging device according to claim 8, characterized in that, When the first power unit and the second power unit are stacked together, the first power unit and the second power unit synchronize data and status based on the cooperative communication protocol; The electrical energy in the first power unit and the second power unit is combined in parallel through the parallel bridge output terminal and outputs a second preset power; the second preset power is greater than the first preset power.
10. A high-power two-in-one charging device according to claim 9, characterized in that, The charging device has a detachable and combinable structure, specifically including: The first housing and the second housing are respectively used to encapsulate the internal components of the first power unit and the second power unit; Electrical connectors and mechanical positioning components are disposed on the mating surfaces of the first housing and the second housing. The electrical connectors are in contact with each other and conduct electricity when the first power unit and the second power unit are assembled. The PCB assembly is fixed inside the housing, and the AC input circuit, protocol and main control buck-boost module and protection board circuit are integrated on the PCB assembly. An AC plug is connected to the outer casing of the charging device; and... The TFT display screen is embedded in the outer surface of the corresponding housing.