Multi-equipment quick charging device

Abstract

The invention discloses a multi-device quick charging device which comprises an MCU control module, an MCU power supply module and at least two paths of first USB output modules and second USB output modules, the MCU control module is electrically connected with the MCU power supply module, the first USB output module and the second USB output module. The first USB output module is used for providing first direct current with multiple output modes for external equipment; and the second USB output module is used for providing second direct current meeting the multi-output mode under the maximum output power for the external equipment. The mobile power supply solves the technical problem that the existing mobile power supply cannot charge multiple types of interfaces of multiple devices by the same power supply.

Description

Technical Field

[0001] The present invention relates to the field of voltage conversion control, and in particular to a multi-device fast charging device. Background Art

[0002] A mobile power source is a portable charger that can be carried by an individual and stores its own electrical energy. It is mainly used to charge consumer electronic products such as handheld mobile devices, especially in situations where there is no external power supply. Its components include batteries for storing electrical energy and circuits for stabilizing the output voltage. Most mobile power sources come with chargers for charging built-in batteries. Portable energy storage is widely used in outdoor and emergency scenarios. With the improvement of residents' living standards, portable energy storage power sources have ushered in development. Portable energy storage power sources, also known as outdoor mobile power sources, can be simply understood as super-large power banks that can meet the needs of outdoor electricity consumption and are widely used in outdoor scenarios such as environmental protection, communications, fire protection, electricity, tourism, and home energy storage. At present, various types of consumer electronic products have a variety of charging interfaces, while the existing mobile power supply charging interface is single, and it is impossible to use the same power supply to charge multiple products. Therefore, it is urgent to propose a multi-device fast charging device to solve the above technical problems. Summary of the invention

[0003] The main purpose of the present invention is to provide a multi-device fast charging device, aiming to solve the technical problem that the existing mobile power supply cannot realize the same power supply to charge multiple types of interfaces of multiple devices.

[0004] To achieve the above object, the present invention provides a multi-device fast charging device, wherein the multi-device fast charging device comprises:

[0005] An MCU control module, an MCU power supply module, and at least two first USB output modules and a second USB output module; the MCU control module is electrically connected to the MCU power supply module, the first USB output module, and the second USB output module respectively;

[0006] The first USB output module is used to provide a first direct current in a multi-output mode to an external device;

[0007] The second USB output module is used to provide the external device with a second direct current that satisfies the multi-output mode at the maximum output power.

[0008] In one of the preferred schemes, the MCU power supply module includes a first input filter circuit, a control circuit and a first output filter circuit electrically connected in sequence; the control circuit includes a controller U4, pins 2 and 3 of the controller U4 are connected to the first input filter circuit, the first input filter circuit is connected to the power supply end, pins 5, 7 and 8 of the controller U4 are connected to the first output filter circuit, the output end of the first output filter circuit is connected to the MCU control module, and pins 0, 1 and 4 of the controller U4 are grounded.

[0009] In one of the preferred schemes, the first input filter circuit includes a diode D5, a diode D6, a diode D7, a diode D8 and a capacitor C22; the anodes of the diodes D5, D6, D7 and D8 are connected to the power supply end, the cathodes of the diodes D5, D6, D7 and D8 are connected to the capacitor C22 and the 2nd and 3rd pins of the controller U4 respectively, and the other end of the capacitor C22 is grounded.

[0010] One of the preferred schemes, the first output filter circuit includes a capacitor C26, a resistor R33, a capacitor C24, an inductor L3, a capacitor C25, a resistor R34, a capacitor C30 and a resistor R37; one end of the inductor L3 is respectively connected to the resistor R33, the capacitor C26 and the 8-pin of the controller U4, the other end of the capacitor C26 is connected to the 7-pin of the controller U4, the other end of the resistor R33 is grounded through the other end of the capacitor C24, the other end of the inductor L3 is respectively connected to the capacitor C25 and the MCU control module, one end of the resistor R34 is respectively connected to the capacitor C30, the resistor R37 and the 5-pin of the controller U4, the other end of the resistor R34 is respectively connected to the other end of the capacitor C30 and the MCU control module, and the other end of the resistor R37 and the capacitor C25 are grounded.

[0011] One of the preferred schemes, the first USB output module includes a controller U10, a first input switch circuit, a second input filter circuit, a second output filter circuit and a first output circuit; pins 0 and 1 of the controller U10 are grounded, pins 2 and 3 of the controller U10 are connected to the second output filter circuit, pins 5 and 6 of the controller U10 are connected to the first output circuit, pin 7 of the controller U10 is respectively connected to the first input switch circuit and the first input filter circuit, the first input switch circuit is connected to the MCU control module, and the first output circuit is respectively connected to the MCU control module and the external device.

[0012] In one of the preferred solutions, the first input switch circuit includes a MOS tube Q11, a resistor R84, a resistor R86, a transistor Q12, a resistor R90 and a resistor R91; the base of the transistor Q12 is respectively connected to the resistor R90 and the resistor R91, the other end of the resistor R90 is connected to the MCU control module, the emission electrode of the transistor Q12 and the other end of the resistor R91 are grounded, the collector of the transistor Q12 is connected to the resistor R86, the other end of the resistor R86 is respectively connected to the 4 pins of the MOS tube Q11 and the resistor R84, the other end of the resistor R84 is respectively connected to the power supply end and the 1, 2, and 3 pins of the MOS tube Q11, and the 5, 6, 7, and 8 pins of the MOS tube Q11 are respectively connected to the second input filter circuit and the 7 pin of the controller USB1.

[0013] In one of the preferred embodiments, the second output filter circuit includes an inductor L5, a capacitor C69, a resistor R83, a capacitor C70 and a capacitor C74; one end of the inductor L5 is respectively connected to the resistor R83, the capacitor C69 and the pin 2 of the controller U10, the other end of the capacitor C69 is connected to the pin 3 of the controller U10, the other end of the resistor R83 is connected to the capacitor C70, the other end of the inductor L5 is respectively connected to the capacitor C74 and the first output circuit, and the other ends of the capacitor C70 and the capacitor C74 are grounded.

[0014] One of the preferred schemes, the first output circuit includes an interface USB1, a resistor R85, a resistor R89, a resistor R87 and a resistor R88; pin 1 of the interface USB1 is respectively connected to the resistor R85 and the second output filter circuit, the other end of the resistor R85 is respectively connected to the resistor R89 ​​and the MCU control module, pins 2 and 3 of the interface USB1 are connected to the controller U10, pin 4 of the interface USB1 is respectively connected to the resistor R87 and the resistor R88, the other end of the resistor R87 is connected to the MCU control module, and the other ends of the resistor R88 and the resistor R89 ​​are grounded.

[0015] One of the preferred schemes, the second USB output module includes a second input switch circuit, a third input filter circuit, a controller U15, a level conversion circuit, a third output filter circuit and a second output circuit; pins 13, 14, 15, and 16 of the controller U15 are connected to the third input filter circuit, the third input filter circuit is connected to the second input switch circuit, the second input switch circuit is connected to the MCU control module, pins 8 and 9 of the controller U15 are connected to the level conversion circuit, pins 2, 3, 4, 5, and 6 of the controller U15 are connected to the third output filter circuit, and the third output filter circuit is connected to the second output circuit.

[0016] In one of the preferred schemes, the level conversion circuit includes a MOS tube Q25, a MOS tube Q27, a resistor R133, a resistor R134, a resistor R135 and a resistor R136; the source of the MOS tube Q25 is respectively connected to the MCU control module and the resistor R133, the drain of the MOS tube Q25 is respectively connected to the 8 pins of the controller U15 and the resistor R134, the source of the MOS tube Q27 is respectively connected to the resistor R135 and the MCU control module, the drain of the MOS tube Q27 is respectively connected to the resistor R136 and the 8 pins of the controller U15, and the other ends of the resistors R133, R134, R135 and R136 are connected to the power supply end.

[0017] In the above technical solution of the present invention, the multi-device fast charging device includes: an MCU control module, an MCU power supply module, and at least two first USB output modules and a second USB output module; the MCU control module is electrically connected to the MCU power supply module, the first USB output module, and the second USB output module respectively; the first USB output module is used to provide a first direct current in a multi-output mode to an external device; the second USB output module is used to provide a second direct current in a multi-output mode that satisfies the maximum output power to the external device. The present invention converts the input power into multiple power sources by setting the first USB output module and the second USB output module, thereby solving the technical problem that the existing mobile power supply cannot realize the same power supply to charge multiple types of interfaces of multiple devices, and can realize charging of multiple power-consuming devices at the same time, and realize fast charging of power-consuming devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of a multi-device fast charging device according to an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of an MCU power supply module according to an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of an MCU control module according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of a first USB output module according to an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the second USB output module with a maximum output power of 60W according to an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the second USB output module with a maximum output power of 100W according to an embodiment of the present invention.

[0025] The realization, functional features and advantages of the object of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0028] Moreover, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0029] See Figure 1-Figure 6 , according to one aspect of the present invention, the present invention provides a multi-device fast charging device, wherein the multi-device fast charging device includes:

[0030] An MCU control module, an MCU power supply module, and at least two first USB output modules and second USB output modules; the MCU control module is electrically connected to the MCU power supply module, the first USB output module, and the second USB output module respectively;

[0031] The first USB output module is used to provide a first direct current with multiple output modes to an external device;

[0032] The second USB output module is used to provide a second direct current with multiple output modes that meets the maximum output power to an external device.

[0033] Specifically, in this embodiment, the MCU control module is used to control the opening or closing of the first USB output module and the second USB output module, and perform alarm protection.

[0034] Specifically, in this embodiment, the MCU power supply module includes a first input filter circuit, a control circuit and a first output filter circuit which are electrically connected in sequence; the control circuit includes a controller U4, pins 2 and 3 of the controller U4 are connected to the first input filter circuit, the first input filter circuit is connected to the power supply end, pins 5, 7 and 8 of the controller U4 are connected to the first output filter circuit, the output end of the first output filter circuit is connected to the MCU control module, and pins 0, 1 and 4 of the controller U4 are grounded; the MCU power supply module is used to provide the required direct current to the MCU control module;

[0035] Specifically, in the present embodiment, the first input filter circuit comprises a diode D5, a diode D6, a diode D7, a diode D8, a capacitor C22 and a capacitor C23; the anodes of the diodes D5, D6, D7 and D8 are connected to the power supply end, the cathodes of the diodes D5, D6, D7 and D8 are connected to the 2nd and 3rd pins of the capacitor C22, the capacitor C23 and the controller U4 respectively, and the other ends of the capacitors C22 and C23 are grounded; by arranging diodes D5, D6, D7 and D8 at the input of the power supply end, reverse cutoff is prevented by the above diodes, and a current loop cannot be formed, thereby protecting the components in the circuit from being damaged, and reducing the influence of the subsequent circuit on the previous circuit, performing anti-interference isolation, and protecting the power supply; the output voltage is stabilized by the capacitors C22 and C23, and the clutter and AC components in the power supply are filtered out to smooth the pulsating DC.

[0036] Specifically, in the present embodiment, the first output filter circuit includes a capacitor C26, a resistor R33, a capacitor C24, an inductor L3, a capacitor C25, a capacitor C27, a capacitor C28, a resistor R34, a capacitor C30 and a resistor R37; one end of the inductor L3 is respectively connected to the resistor R33, the capacitor C26 and the 8-pin of the controller U4, the other end of the capacitor C26 is connected to the 7-pin of the controller U4, the other end of the resistor R33 is grounded through the other end of the capacitor C24, the other end of the inductor L3 is respectively connected to the capacitor C25, the capacitor C27, the capacitor C28 and the MCU control module, one end of the resistor R34 is respectively connected to the capacitor C30, the resistor R37 and the 5-pin of the controller U4, the other end of the resistor R34 is respectively connected to the other end of the capacitor C30 and the MCU control module, the resistor R37 and the other ends of the capacitor C25, the capacitor C27 and the capacitor C28 are grounded; the first output filter circuit is used to filter out clutter and AC components in the power supply, and output smooth pulsating DC power.

[0037] Specifically, in the present embodiment, the first USB output module includes a controller U10, a first input switch circuit, a second input filter circuit, a second output filter circuit and a first output circuit; pins 0 and 1 of the controller U10 are grounded, pins 2 and 3 of the controller U10 are connected to the second output filter circuit, pins 5 and 6 of the controller U10 are connected to the first output circuit, pin 7 of the controller U10 is respectively connected to the first input switch circuit and the first input filter circuit, the first input switch circuit is connected to the MCU control module, and the first output circuit is respectively connected to the MCU control module and the external device; the first USB output module is used to provide 5V, 9V and 12V DC power to the external device.

[0038] Specifically, in this embodiment, the first input switch circuit includes a MOS tube Q11, a resistor R84, a resistor R86, a transistor Q12, a resistor R90 and a resistor R91; the base of the transistor Q12 is connected to the resistor R90 and the resistor R91 respectively, the other end of the resistor R90 is connected to the MCU control module, the emitter of the transistor Q12 and the other end of the resistor R91 are grounded, the collector of the transistor Q12 is connected to the resistor R86, the other end of the resistor R86 is connected to the 4 pins of the MOS tube Q11 and the resistor R84 respectively, and the other end of the resistor R84 is connected to the MCU control module. They are respectively connected to the power supply end and the 1st, 2nd and 3rd pins of the MOS tube Q11, and the 5th, 6th, 7th and 8th pins of the MOS tube Q11 are respectively connected to the second input filter circuit and the 7th pin of the controller USB1; when the MCU control module outputs a high level, the transistor Q12 is turned on, the MOS tube Q11 opens the channel, connects to the power supply, and outputs to the controller USB1 through the second input filter circuit for voltage conversion; the controller USB1 can use a conventional voltage conversion chip, which is not specifically limited in the present invention, and the controller USB1 is used to convert 5V, 9V and 12V direct current.

[0039] Specifically, in this embodiment, the second input filter circuit includes a capacitor C71 and a capacitor C72; one end of the capacitor C71 and the capacitor C72 are respectively connected to the 7-pin of the controller U10 and the first input switch circuit, and the other end of the capacitor C71 and the capacitor C72 are grounded; the second input filter circuit is used to filter out clutter and AC components in the power supply to smooth the pulsating DC.

[0040] Specifically, in this embodiment, the second output filter circuit includes an inductor L5, a capacitor C69, a resistor R83, a capacitor C70, a capacitor C74, a capacitor C73 and a capacitor C75; one end of the inductor L5 is respectively connected to the resistor R83, the capacitor C69 and the pin 2 of the controller U10, the other end of the capacitor C69 is connected to the pin 3 of the controller U10, the other end of the resistor R83 is connected to the capacitor C70, the other end of the inductor L5 is respectively connected to the capacitor C74, the capacitor C73, the capacitor C75 and the first output circuit, and the other ends of the capacitor C70, the capacitor C74, the capacitor C73 and the capacitor C75 are grounded; the second output filter circuit is used to convert the input high-frequency pulse signal into a DC signal to reduce the pulsation and fluctuation of the output.

[0041] Specifically, in the present embodiment, the first output circuit includes an interface USB1, a resistor R85, a resistor R89, a resistor R87 and a resistor R88; a pin 1 of the interface USB1 is respectively connected to the resistor R85 and the second output filter circuit, the other end of the resistor R85 is respectively connected to the resistor R89 ​​and the MCU control module, the MCU control module collects the voltage state, and judges whether the voltage output is too high or too low according to the voltage threshold set by the system, thereby performing circuit overvoltage protection and undervoltage protection, if the voltage output is too high or too low, the MCU control module outputs a low level to turn off the power input through the input switch circuit; pins 2 and 3 of the interface USB1 are connected to the controller U10, pin 4 of the interface USB1 is respectively connected to the resistor R87 and the resistor R88, the other end of the resistor R87 is connected to the MCU control module, the MCU control module performs current collection, judges whether the circuit output current is overloaded according to the collected current value and the current threshold set by the system, if the collected current value is greater than the current threshold, the circuit is judged to be overloaded, and the MCU control module outputs a low level to turn off the input switch circuit to avoid circuit damage.

[0042] Specifically, in this embodiment, the multi-device fast charging device is provided with at least two first USB output modules. In the present invention, the multi-device fast charging device is provided with four first USB output modules. The present invention does not make specific limitations and can be set according to needs. Among them, the circuit structure of each module is the same and the present invention does not elaborate.

[0043] Specifically, in this embodiment, the second USB output module includes a second input switch circuit, a third input filter circuit, a controller U15, a level conversion circuit, a third output filter circuit and a second output circuit; pins 13, 14, 15 and 16 of the controller U15 are connected to the third input filter circuit, the third input filter circuit is connected to the second input switch circuit, the second input switch circuit is connected to the MCU control module, pins 8 and 9 of the controller U15 are connected to the level conversion circuit, pins 2, 3, 4, 5 and 6 of the controller U15 are connected to the third output filter circuit, and the third output filter circuit is connected to the second output circuit; the second USB output module is used to provide 5V, 9V, 12V, 15V and 20V DC power to external devices, and the maximum output power is 60W and / or 100W.

[0044] Specifically, in this embodiment, the level conversion circuit includes a MOS tube Q25, a MOS tube Q27, a resistor R133, a resistor R134, a resistor R135 and a resistor R136; the source of the MOS tube Q25 is respectively connected to the MCU control module and the resistor R133, the drain of the MOS tube Q25 is respectively connected to the 8 pins of the controller U15 and the resistor R134, the source of the MOS tube Q27 is respectively connected to the resistor R135 and the MCU control module, the drain of the MOS tube Q27 is respectively connected to the resistor R136 and the 8 pins of the controller U15, and the other ends of the resistors R133, R134, R135 and R136 are connected to the power supply end.

[0045] Specifically, in the present embodiment, the second input switch circuit includes a MOS tube Q26, a resistor R137, a resistor R138, a triode Q28, a resistor R139 and a resistor R140; the base of the triode Q28 is respectively connected to the resistor R139 and the resistor R140, the other end of the resistor R139 is connected to the MCU control module, the emitter of the triode Q28 and the other end of the resistor R140 are grounded, the collector of the triode Q28 is connected to the resistor R138, the other end of the resistor R138 is respectively connected to the resistor R137 and the 4 pins of the MOS tube Q26, the resistor R137 The other end is connected to the power supply end and the 1st, 2nd and 3rd pins of the MOS tube Q26 respectively, and the 5th, 6th, 7th and 8th pins of the MOS tube Q26 are connected to the third input filter circuit. When the MCU control module inputs a high level, the transistor Q28 is turned on, the MOS tube Q11 opens the channel, connects to the power supply, and outputs to the controller U15 through the third input filter circuit for voltage conversion. The controller U15 can use a conventional voltage conversion chip, which is not specifically limited in the present invention and can be set according to needs. The controller U15 performs conversion of 5V, 9V, 12V, 15V and 20V DC.

[0046] Specifically, in this embodiment, the third input filter circuit includes capacitor C119, capacitor C120 and capacitor C121, one end of the capacitor C119, capacitor C120 and capacitor C121 is connected to pin 13 of the controller U15, and the other end of the capacitor C119, capacitor C120 and capacitor C121 is grounded; the third input filter circuit is used to filter out noise and AC components in the power supply and smooth pulsating DC.

[0047] Specifically, in this embodiment, the third output filter circuit includes an inductor L10, a capacitor C122, a capacitor C123, a capacitor C124, a capacitor C158, a capacitor C118, a resistor R142, a capacitor C143, a capacitor C126, a capacitor C125 and a resistor R141; one end of the inductor L10 is respectively connected to the resistor R143 and the 6-pin of the controller U15, the other end of the resistor R143 is grounded through the capacitor C126, and the other end of the inductor L10 is respectively connected to the capacitor C122, the capacitor C123, the capacitor C124, the capacitor C158, the capacitor C118, the resistor R142, the capacitor C143, the capacitor C126, the capacitor C125 and the resistor R141. Capacitor C158, resistor R142 and capacitor C118 are connected, the other end of the resistor R142 is respectively connected to the other end of the capacitor C118, resistor R141, capacitor C125 and the second output circuit, and the other ends of the capacitor C122, capacitor C123, capacitor C124, capacitor C158, resistor R141 and capacitor C125 are grounded; wherein, the two ends of the resistor R142 are also respectively connected to the controller U15; the third output filter circuit is used to convert the input high-frequency pulse signal into a DC signal to reduce the pulsation and fluctuation of the output.

[0048] Specifically, in this embodiment, the second output circuit includes an output socket Type-C2, and the output socket Type-C2 is respectively connected to the third output filter circuit and the external device, and outputs 5V, 9V, 12V, 15V and 20V DC power to the external device through the second output circuit, and the maximum output power is 60W.

[0049] Specifically, in this embodiment, the MCU control module gives a high level to the resistor R139, and after the transistor Q28 works, the level of the resistor R138 is pulled down to 0V, so that the MOS tube Q26 is turned on, and the voltage is transmitted to the controller U15 for input voltage switching. The switching power supply switches the input voltage into a high-frequency pulse signal through a high-frequency switching mode, and then enters the inductor L10 for conversion. After the high-frequency pulse signal is converted into the required voltage form through the transformer or inductor, it is processed by the filter capacitor circuit composed of capacitors C122, C123, C124 and C158 to eliminate Unnecessary fluctuations and noise are eliminated, thereby obtaining a stable DC output voltage. Through the sampling resistor R142, at this time, the MCU control module will sample the voltage and current. The MCU control module converts the original 5V communication voltage into a 3.3V voltage level through the level conversion circuit, and then enters the serial port communication, thereby obtaining the voltage and current data sampled by the controller U15, and processing it in the MCU control module. According to the threshold voltage and threshold current, it is determined whether to continue to output a high level to the resistor R1391 to continuously turn on the MOS tube Q26, that is, to control the opening and closing of the second input switch circuit according to the voltage and current data.

[0050] Specifically, in this embodiment, if the maximum output power output by the second USB output module is 100W, a switch circuit is further provided between the controller U15 and the third output filter circuit; the switch circuit includes a MOS tube Q23, the source of which is respectively connected to the 6-pin of the controller U15 and the gate of the MOS tube Q24, the drain of the MOS tube Q23 is respectively connected to the second input switch circuit and the third input filter circuit, and the source of the MOS tube Q24 is grounded; the power processing capability of the circuit is improved by the switch circuit to meet higher power requirements.

[0051] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A multi-device fast charging device, characterized in that: include: MCU control module, MCU power supply module and at least two first USB output modules and second USB output modules; The MCU control module is electrically connected to the MCU power supply module, the first USB output module and the second USB output module respectively; The first USB output module is used to provide a first direct current in a multi-output mode to an external device; The second USB output module is used to provide the external device with a second direct current that satisfies the multi-output mode at the maximum output power.

2. A multi-device fast charging device according to claim 1, characterized in that: The MCU power supply module includes a first input filter circuit, a control circuit and a first output filter circuit which are electrically connected in sequence; the control circuit includes a controller U4, pins 2 and 3 of the controller U4 are connected to the first input filter circuit, the first input filter circuit is connected to the power supply end, pins 5, 7 and 8 of the controller U4 are connected to the first output filter circuit, the output end of the first output filter circuit is connected to the MCU control module, and pins 0, 1 and 4 of the controller U4 are grounded.

3. A multi-device fast charging device according to claim 2, characterized in that: The first input filter circuit includes a diode D5, a diode D6, a diode D7, a diode D8 and a capacitor C22; anodes of the diodes D5, D6, D7 and D8 are connected to the power supply end, cathodes of the diodes D5, D6, D7 and D8 are connected to the capacitor C22 and pins 2 and 3 of the controller U4 respectively, and the other end of the capacitor C22 is grounded.

4. A multi-device fast charging device according to claim 2, characterized in that: The first output filter circuit includes capacitor C26, resistor R33, capacitor C24, inductor L3, capacitor C25, resistor R34, capacitor C30 and resistor R37; one end of the inductor L3 is respectively connected to the resistor R33, capacitor C26 and pin 8 of the controller U4, the other end of the capacitor C26 is connected to pin 7 of the controller U4, the other end of the resistor R33 is grounded through the other end of the capacitor C24, the other end of the inductor L3 is respectively connected to the capacitor C25 and the MCU control module, one end of the resistor R34 is respectively connected to the capacitor C30, resistor R37 and pin 5 of the controller U4, the other end of the resistor R34 is respectively connected to the other end of the capacitor C30 and the MCU control module, and the other end of the resistor R37 and the capacitor C25 are grounded.

5. A multi-device fast charging device according to any one of claims 1 to 4, characterized in that: The first USB output module includes a controller U10, a first input switch circuit, a second input filter circuit, a second output filter circuit and a first output circuit; pins 0 and 1 of the controller U10 are grounded, pins 2 and 3 of the controller U10 are connected to the second output filter circuit, pins 5 and 6 of the controller U10 are connected to the first output circuit, pin 7 of the controller U10 is respectively connected to the first input switch circuit and the first input filter circuit, the first input switch circuit is connected to the MCU control module, and the first output circuit is respectively connected to the MCU control module and an external device.

6. A multi-device fast charging device according to claim 5, characterized in that: The first input switch circuit includes a MOS tube Q11, a resistor R84, a resistor R86, a triode Q12, a resistor R90 and a resistor R91; the base of the triode Q12 is respectively connected to the resistor R90 and the resistor R91, the other end of the resistor R90 is connected to the MCU control module, the emission electrode of the triode Q12 and the other end of the resistor R91 are grounded, the collector of the triode Q12 is connected to the resistor R86, the other end of the resistor R86 is respectively connected to the 4 pins of the MOS tube Q11 and the resistor R84, the other end of the resistor R84 is respectively connected to the power supply end and the 1, 2, and 3 pins of the MOS tube Q11, and the 5, 6, 7, and 8 pins of the MOS tube Q11 are respectively connected to the second input filter circuit and the 7 pin of the controller USB1.

7. A multi-device fast charging device according to claim 5, characterized in that: The second output filter circuit includes an inductor L5, a capacitor C69, a resistor R83, a capacitor C70 and a capacitor C74; one end of the inductor L5 is respectively connected to the resistor R83, the capacitor C69 and the pin 2 of the controller U10, the other end of the capacitor C69 is connected to the pin 3 of the controller U10, the other end of the resistor R83 is connected to the capacitor C70, the other end of the inductor L5 is respectively connected to the capacitor C74 and the first output circuit, and the other ends of the capacitor C70 and the capacitor C74 are grounded.

8. A multi-device fast charging device according to claim 5, characterized in that: The first output circuit includes an interface USB1, a resistor R85, a resistor R89, a resistor R87 and a resistor R88; pin 1 of the interface USB1 is respectively connected to the resistor R85 and the second output filter circuit, the other end of the resistor R85 is respectively connected to the resistor R89 ​​and the MCU control module, pins 2 and 3 of the interface USB1 are connected to the controller U10, pin 4 of the interface USB1 is respectively connected to the resistor R87 and the resistor R88, the other end of the resistor R87 is connected to the MCU control module, and the other ends of the resistor R88 and the resistor R89 ​​are grounded.

9. A multi-device fast charging device according to any one of claims 1 to 4, characterized in that: The second USB output module includes a second input switch circuit, a third input filter circuit, a controller U15, a level conversion circuit, a third output filter circuit and a second output circuit; pins 13, 14, 15, and 16 of the controller U15 are connected to the third input filter circuit, the third input filter circuit is connected to the second input switch circuit, the second input switch circuit is connected to the MCU control module, pins 8 and 9 of the controller U15 are connected to the level conversion circuit, pins 2, 3, 4, 5, and 6 of the controller U15 are connected to the third output filter circuit, and the third output filter circuit is connected to the second output circuit.

10. A multi-device fast charging device according to claim 9, characterized in that: The level conversion circuit includes a MOS tube Q25, a MOS tube Q27, a resistor R133, a resistor R134, a resistor R135 and a resistor R136; the source of the MOS tube Q25 is respectively connected to the MCU control module and the resistor R133, the drain of the MOS tube Q25 is respectively connected to the 8 pins of the controller U15 and the resistor R134, the source of the MOS tube Q27 is respectively connected to the resistor R135 and the MCU control module, the drain of the MOS tube Q27 is respectively connected to the resistor R136 and the 8 pins of the controller U15, and the other ends of the resistors R133, R134, R135 and R136 are connected to the power supply end.

Images