CN217741362U

CN217741362U - Multifunctional mobile power supply

Info

Publication number: CN217741362U
Application number: CN202221842997.1U
Authority: CN
Inventors: 方岳亮; 刘佩; 张红
Original assignee: Hefei Tongzhi Electrical Control Technology Co ltd
Current assignee: Hefei Tongzhi Electrical Control Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-11-04
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses a multifunctional mobile power supply, including hand generating set, DC/DC buck-boost module, solar cell panel, MPPT solar charging controller, lithium cell group, AC/DC charging module, DC/DC conversion module, DC/DC power and inverter, hand generating set's output port passes through DC/DC buck-boost module and is connected with the input port of lithium cell group, solar cell panel's power output port passes through MPPT solar charging controller and is connected with the input port of lithium cell group, AC/DC charging module and DC/DC conversion module are connected with the input port of lithium cell group, the output port of lithium cell group is connected with DC/DC power and inverter respectively; the utility model has the advantages that: the output power type and the power supply mode are complete, and the use requirements of people on various environments and various electrical equipment can be met.

Description

Multifunctional mobile power supply

Technical Field

The utility model relates to a portable power source field, more specifically relates to a multi-functional portable power source.

Background

Along with the improvement of living standard of people, the outdoor life is more and more intense, the short time of going out is 1-2 days, and the long time is 2-3 months. The environment is more diverse, including glaciers, deserts and plateaus. This places higher demands on portable mobile power sources.

At present, portable power sources on the market are mainly single photovoltaic energy storage power sources or power sources combined with hand-operated power generation equipment, but output power sources are single-type power sources, and only hand-operated power generation and photovoltaic energy storage modes are adopted, so that when no sunlight exists and the hand-operated power generation equipment fails, the equipment cannot be powered, and therefore, the single output power source type and the single power supply mode are not complete, and the use requirements of people on various environments and various electrical equipment cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the portable power source output power type of prior art and power supply mode are not complete, lead to can not satisfy people to various environment and various electrical equipment's user demand.

The utility model discloses a following technical means realizes solving above-mentioned technical problem: a multifunctional mobile power supply comprises a hand-operated generator set, a DC/DC buck-boost module, a solar cell panel, an MPPT solar charging controller, a lithium battery pack, an AC/DC charging module, a DC/DC conversion module, a DC/DC power supply and an inverter power supply, wherein an output port of the hand-operated generator set is connected with a power input port of the DC/DC buck-boost module, a power output port of the DC/DC buck-boost module is connected with an input port of the lithium battery pack, a power output port of the solar cell panel is connected with an input port of the MPPT solar charging controller, an output port of the MPPT solar charging controller is connected with an input port of the lithium battery pack, mains supply input is connected with the input port of the lithium battery pack through the AC/DC charging module and the DC/DC conversion module, and the inverter output port of the lithium battery pack is respectively connected with the DC/DC power supply and the power supply.

The utility model discloses set up hand generating set, solar cell panel and these three kinds of modes of commercial power input and charge to lithium cell group, power supply mode is complete, and the output port and the DC power of lithium cell group are connected, output DC power supply, the output port and the inverter connection of lithium cell group, output AC power supply, the output power type has included two kinds of forms of direct current and interchange, it is complete in kind, satisfy people to the user demand of various environment and various electrical equipment on the whole.

Further, multi-functional portable power source still includes BMS battery management module, BMS battery management module is connected with lithium cell group.

Further, the model of the DC/DC buck-boost module is UC2843AN.

Further, the model of the MPPT solar charging controller is MA2430N15.

Further, the DC/DC power supply comprises a driving unit, a voltage boosting and reducing control unit and an output voltage fine adjustment unit, the driving unit is connected with the voltage boosting and reducing control unit, an output port of the lithium battery pack is connected with an input port of the voltage boosting and reducing control unit, and an output port of the voltage boosting and reducing control unit is connected with the output voltage fine adjustment unit.

Furthermore, the buck-boost control unit comprises a chip N1, a capacitor C3, a capacitor C7, a MOS transistor Q1, a MOS transistor Q3, a MOS transistor Q5, a MOS transistor Q7, a diode V4 to a diode V7, an inductor L1, a resistor R6, a resistor R26, a resistor R8, a capacitor C14, and a resistor R23, two ends of the capacitor C3 are connected to an output port of the lithium battery pack, one end of the capacitor C7 and a drain of the MOS transistor Q1 are connected to an anode of the capacitor C3, a source of the MOS transistor Q1, a cathode of the diode V6 and a cathode of the diode V7, a drain of the MOS transistor Q3, one end of the inductor L1, and a twenty-fourth pin of the chip N1 are connected, the other end of the inductor L1, a drain of the MOS transistor Q5, a source of the MOS transistor Q7, an anode of the diode V4 and a diode V5 are connected, a cathode of the diode V4 and a cathode of the MOS transistor V5, a drain of the MOS transistor Q7, one end of the capacitor C14, one end of the resistor R23 and a thirty-fourth pin of the chip N1 are connected, and a thirty-second pin of the resistor R23 are connected to a thirty-second pin of the chip N1; the anodes of the diode V6 and the diode V7, the source of the MOS transistor Q3, the source of the MOS transistor Q5, one end of the resistor R6 and one end of the resistor R26 are connected, the other point of the resistor R26, one end of the resistor R8, the other end of the capacitor C14, the other end of the resistor R23 and the cathode of the capacitor C3 are connected and grounded, the other end of the resistor R6 is connected with a sixth pin of the chip N1, and the other end of the resistor R8 is connected with a fifth pin of the chip N1;

the driving unit comprises an optocoupler E3, a resistor R30, a resistor R32, a resistor R9, a diode V3, a resistor R11, a capacitor C20, an optocoupler E4, a resistor R34, a resistor R35, a resistor R33, a resistor R12 and a capacitor C24, wherein one end of the resistor R30 is connected with a high level and a low level, the other end of the resistor R30, one end of the resistor R32 and a first pin of the optocoupler E3 are connected, a second pin of the optocoupler E3 and the other end of the resistor R32 are connected and grounded, a fourth pin of the optocoupler E3 is connected with one end of the resistor R9, the other end of the resistor R9, the anode of the capacitor C3 and a thirty-six-eight pin to thirty-eight pin of the chip N1 are connected, a third pin of the optocoupler E3, a cathode of the diode V3, one end of the resistor R11, one end of the capacitor C20 and a fourth pin of the chip N1 are connected, and a cathode of the diode V3, the other end of the resistor R11 and the other end of the capacitor C20 are connected and grounded; one end of the resistor R34 is connected with a high level and a low level, the other end of the resistor R34, one end of the resistor R35 and a first pin of the optocoupler E4 are connected, a second pin of the optocoupler E4 and the other end of the resistor R35 are connected and grounded, a fourth pin of the optocoupler E4, one end of the resistor R33 and one end of the resistor R12 are connected, the other end of the resistor R33, one end of the capacitor C24 and a tenth pin of the chip N1 are connected, and the other end of the capacitor C24, the other end of the resistor R12 and a third pin of the optocoupler E4 are connected and grounded;

the output voltage fine adjustment unit comprises a capacitor C5, a capacitor C12, a capacitor C9, a diode V8, a diode V9, a capacitor C11, a resistor R36, a resistor R3, a resistor R4, a resistor R21, a resistor R5, a resistor R10, an optocoupler E1, an optocoupler E2, a resistor R1, a resistor R20, a resistor R22 and a resistor R29, one end of the capacitor C5 is connected with one end of a resistor R23, one end of the capacitor C12, one end of the capacitor C9, the anode of the diode V8 and the anode of the diode V9, the other end of the capacitor C5 is connected with the other end of a capacitor C14, the other end of the capacitor C12 and the other end of the capacitor C9, the anode of the capacitor C11 is connected with the cathode of the diode V8, the cathode of the diode V9 and one end of the resistor R36, the negative electrode of the capacitor C11, the other end of the resistor R36 and one end of the resistor R5 are connected, the other end of the resistor R5, the third pin of the optocoupler E2 and one end of the resistor R21 are connected, the other end of the resistor R21, the fourth pin of the optocoupler E2, one end of the resistor R3 and the third pin of the optocoupler E1 are connected, the fourth pin of the optocoupler E1, one end of the resistor R4, one end of the resistor R10 and the other end of the resistor R3 are connected, the other end of the resistor R4 and the other end of the resistor R10 are connected and serve as a voltage output port VOUT +, a first pin of the optocoupler E1, one end of the resistor R1 and one end of the resistor R20 are connected, the other end of the resistor R20 and the second pin of the optocoupler E1 are connected and grounded, and the other end of the resistor R1 is connected with a high-low level; the first pin of the optical coupler E2, one end of the resistor R29 and one end of the resistor R22 are connected, the other end of the resistor R29 and the second pin of the optical coupler E2 are connected and grounded, and the other end of the resistor R22 is connected with a high level and a low level.

Further, the DC/DC conversion module comprises a starting unit, a buck-boost chip U1, a voltage regulating unit and a current regulating unit, wherein the starting unit, the voltage regulating unit and the current regulating unit are all connected with the buck-boost chip U1.

Furthermore, the starting unit comprises capacitors C31 to C34, a resistor R47, and a transistor Q10, wherein the positive electrode of the capacitor C31, the positive electrode of the capacitor C32, one end of the capacitor C33, one end of the capacitor C34, and a first pin of the buck-boost chip U1 are connected and connected to the positive output terminal of the AC/DC charging module, the negative electrode of the capacitor C31, the negative electrode of the capacitor C32, the other end of the capacitor C33, the other end of the capacitor C34, one end of the resistor R47, the emitter of the transistor Q10, and a third pin of the buck-boost chip U1 are connected and connected to the negative output terminal of the AC/DC charging module, the other end of the resistor R10 is connected to the base of the transistor Q10, and the collector of the transistor Q10 is connected to the second pin of the buck-boost chip U1;

the peripheral circuit of the buck-boost chip U1 comprises a resistor R42, a resistor R46, a capacitor C35-a capacitor C38, a resistor R41 and a resistor R44, one end of the resistor R42 is connected with a sixth pin of the buck-boost chip U1, the other end of the resistor R42 is connected with one end of the resistor R46, the other end of the resistor R46, a fourth pin and a third pin of the buck-boost chip U1, one end of the capacitor C36, a negative electrode of the capacitor C37, a negative electrode of the capacitor C35, one end of the capacitor C38 and one end of the resistor R44 are connected and grounded, and the other end of the capacitor C38 and the other end of the resistor R44 are connected with one end of the resistor R41; the other end of the capacitor C36, the anode of the capacitor C37, the anode of the capacitor C35 and the other end of the resistor R41 are connected and used as a voltage output port VOUT;

the current adjusting unit comprises an optocoupler E5, a resistor R49, a resistor R43, a resistor R45 and a resistor R48, one end of the resistor R43, one end of the resistor R48 and a fifth pin of the buck-boost chip U1 are connected, the other end of the resistor R43, the other end of the resistor R48, one end of the resistor R45 and a fourth pin of the optocoupler E5 are connected, the other end of the resistor R45 and a third pin of the optocoupler E5 are connected with a fourth pin of the buck-boost chip U1, a first pin of the optocoupler E5 is connected with one end of the resistor R49, the other end of the resistor R49 is connected with a high level and a low level, and a second pin of the optocoupler E5 is grounded;

the voltage adjusting unit comprises a capacitor C39-a capacitor C42, an operational amplifier N1A, a resistor R50-a resistor R56, an operational amplifier N1B, a diode V10 and an optocoupler E6, wherein a second pin of the operational amplifier N1A is connected with a first pin thereof and one end of the resistor R52, a third pin of the operational amplifier N1A is connected with a feedback voltage, the other end of the resistor R52, one end of the resistor R50, one end of the capacitor C39, one end of the resistor R51 and a sixth pin of the operational amplifier N1B are connected, a fifth pin of the operational amplifier N1B is respectively connected with one end of a resistor R55, one end of the capacitor C42 and a cathode of the diode V10 through a resistor R54, and an anode of the diode V10 is connected with the other end of the capacitor C42 and grounded; the other end of the resistor R51 is connected with one end of the capacitor C40, the other end of the resistor R50, the other end of the capacitor C39, the other end of the capacitor C40, the output end of the operational amplifier N1B and a first pin of the optocoupler E6 are connected, and a second pin of the optocoupler E6 is grounded through a resistor R56; the third pin of the optical coupler E6 is grounded, and the fourth pin of the optical coupler E6 is connected with the sixth pin of the buck-boost chip U1 through a resistor R53.

Furthermore, the inverter power supply comprises an LLC resonance circuit, a rectification circuit, an inverter circuit, a filter circuit and an electromagnetic compatibility circuit, wherein the LLC resonance circuit, the rectification circuit, the inverter circuit, the filter circuit and the electromagnetic compatibility circuit are connected in sequence.

Furthermore, the LLC resonant circuit includes an inductor L11, a capacitor C51, a capacitor C52, a capacitor C53, and a transformer T1, one end of the inductor L11 and one end of the capacitor C51 are connected to the output end of the lithium battery pack, the other end of the inductor L11 is connected to the other end of the capacitor C51, one end of the capacitor C52, one end of the capacitor C53, and one end of the primary side of the transformer T1 are connected, the other end of the primary side of the transformer T1 is grounded, the other end of the capacitor C52 and the other end of the capacitor C53 are connected to one end of the capacitor C51 and grounded, and the secondary side of the transformer T1 is sequentially connected to the rectifier circuit and the inverter circuit;

the filter circuit comprises an inductor L12, a capacitor C54, a capacitor C55, a relay contact K1, a relay coil J2, a resistor R65, a triode Q11, a diode V11, a resistor R66, a capacitor C56 and a capacitor C57, one end of the inductor L12 and one end of the capacitor C54 are connected with the output end of the inverter circuit, the inductor L12 is connected with the other end of the capacitor C54, one end of the capacitor C55 and one end of the relay contact K1 are connected with one end of the capacitor C54, the other end of the capacitor C55 and the other end of the capacitor C54 are connected, the other end of the relay contact K1 and the other end of the capacitor C55 are connected with the electromagnetic compatibility circuit, one end of the resistor R66 is connected with a high level and a low level, the other end of the resistor R66, one end of the resistor R65 and the base of the triode Q11 are connected with the emitter of the triode Q11 and the other end of the resistor R65 and are grounded, the collector of the triode Q11, the anode of the diode V11 and one end of the relay coil J2 are connected with the cathode of the diode V11, the anode of the capacitor C57 and the cathode of the capacitor C57 and the capacitor C57 are connected with the capacitor C24 and the ground;

the electromagnetic compatibility circuit comprises a capacitor C58, a common mode inductor L14, a capacitor C59, a resistor R68, a resistor R67, a variable resistor RV1, a capacitor C60, a capacitor C61 and an output terminal, wherein one end of the capacitor C58 and one end of one coil of the common mode inductor L14 are connected with the other end of the relay contact K1, the other end of the capacitor C58 and one end of the other coil of the common mode inductor L14 are connected with the other end of the capacitor C55, the other end of one coil of the common mode inductor L14, one end of the capacitor C59, one end of the resistor R68, one end of the variable resistor RV1 and one end of the capacitor C60 are connected and serve as one end of the output terminal, the other end of the other coil of the common mode inductor L14, the other end of the capacitor C59, one end of the resistor R67, the other end of the variable resistor RV1 and one end of the capacitor C61 are connected and serve as the other end of the output terminal, the other end of the resistor R68 and the other end of the resistor R67 are connected, and the other end of the capacitor C60 and the other end of the capacitor C61 are connected and grounded.

The utility model has the advantages that: the utility model discloses set up hand generating set, these three kinds of modes of solar cell panel and commercial power input charge to the lithium cell group, the power supply mode is complete, and the output port and the DCDC power of lithium cell group are connected, output DC power, the output port and the invertion power supply of lithium cell group are connected, output AC power, the output power type has included direct current and two kinds of forms of interchange, it is complete, satisfy people to various environment and various electrical equipment's user demand on the whole.

Drawings

Fig. 1 is a schematic block diagram of a multifunctional mobile power supply disclosed in an embodiment of the present invention;

fig. 2 is a schematic diagram of a DC/DC power supply in the multifunctional mobile power supply disclosed in the embodiment of the present invention;

fig. 3 is a partial enlarged view of a part of a schematic diagram of a DC/DC power supply in the multifunctional mobile power supply disclosed in the embodiment of the present invention;

fig. 4 is a partially enlarged view of another part of a schematic diagram of a DC/DC power supply in the multifunctional mobile power supply disclosed in the embodiment of the present invention;

fig. 5 is a partial schematic diagram of a DC/DC conversion module in a multifunctional mobile power supply disclosed in an embodiment of the present invention;

fig. 6 is another schematic diagram of a part of a DC/DC conversion module in a multifunctional mobile power supply disclosed in an embodiment of the present invention;

fig. 7 is a schematic diagram of a connection relationship among an LLC resonant circuit, a rectifier circuit, and an inverter circuit of an inverter power supply in the embodiment of the present invention;

fig. 8 is a schematic diagram of a filter circuit of an inverter power supply in the multifunctional mobile power supply disclosed in the embodiment of the present invention;

fig. 9 is a schematic diagram of an electromagnetic compatibility circuit of an inverter power supply in the multifunctional mobile power supply disclosed in the embodiment of the present invention;

fig. 10 is a schematic diagram of an output voltage detection circuit of an inverter power supply in the multifunctional mobile power supply disclosed in the embodiment of the present invention;

fig. 11 is a schematic diagram of a main contactor control circuit of an inverter power supply in a multifunctional mobile power supply according to an embodiment of the present invention.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, a multifunctional mobile power supply includes a hand-operated generator set 1, a DC/DC buck-boost module 2, a solar panel 3, an MPPT solar charging controller 4, a lithium battery pack 5, a BMS battery management module 6, an AC/DC charging module 7, a DC/DC conversion module 8, a DC/DC power supply 9, and an inverter power supply 10, wherein an output port of the hand-operated generator set 1 is connected to a power input port of the DC/DC buck-boost module 2, a power output port of the DC/DC buck-boost module 2 is connected to an input port of the lithium battery pack 5, a power output port of the solar panel 3 is connected to an input port of the MPPT solar charging controller 4, an output port of the MPPT solar charging controller 4 is connected to an input port of the lithium battery pack 5, a commercial power input is connected to an input port of the lithium battery pack 5 through the AC/DC charging module 7 and the DC/DC conversion module 8, and an output port of the battery pack 5 is respectively connected to the DC/DC power supply 9 and the inverter power supply 10. The BMS battery management module 6 is connected to the lithium battery pack 5.

The hand-operated generator set 1, the DC/DC buck-boost module 2, the solar cell panel 3, the MPPT solar charging controller 4, the lithium battery pack 5, the BMS battery management module 6 and the AC/DC charging module 7 are all mature structures or circuits in the prior art, wherein the principle of the hand-operated generator set 1 is an electromagnetic induction principle, a coil generates induced electromotive force in a rotating magnetic field, the basic construction components are a stator and a rotor, the stator is a permanent magnet, and the rotor is a coil. The coil is driven by external force to do cutting magnetic induction line motion in a magnetic field to generate induced electromotive force, then the induced electromotive force is rectified by a bridge rectifier circuit, the lithium battery is charged by a DC/DC buck-boost module 2 after the rectification, and the structure of the hand-operated generator set 1 can adopt a scheme recorded by Chinese patent application No. CN201721854043.1 which is named as charging equipment for self-generating electricity by arm swing. The utility model discloses well DC/DC buck-boost module 2's model is UC2843AN. The model of the MPPT solar charging controller 4 is MA2430N15, and the solar cell panel 3 is connected with a power supply input port of the MPPT solar charging controller 4 of the model. The lithium battery pack 5 adopts commercially available voltage levels according to actual conditions, such as 12V, 24V and 8.4V. The AC/DC charging module 7 employs ZAH-220E 1228. The BMS battery management module 6 may employ a related art BMS battery management system.

As shown in fig. 2 to 4, the DC/DC power supply 9 includes a driving unit, a voltage step-up and step-down control unit, and an output voltage fine-tuning unit, wherein the driving unit is connected to the voltage step-up and step-down control unit, an output port of the lithium battery pack 5 is connected to an input port of the voltage step-up and step-down control unit, and an output port of the voltage step-up and step-down control unit is connected to the output voltage fine-tuning unit.

With continued reference to fig. 2 to 3, the buck-boost control unit includes a chip N1, a capacitor C3, a capacitor C7, a MOS transistor Q1, a MOS transistor Q3, a MOS transistor Q5, a MOS transistor Q7, a diode V4 to a diode V7, an inductor L1, a resistor R6, a resistor R26, a resistor R8, a capacitor C14, and a resistor R23, two ends of the capacitor C3 are connected to an output port of the lithium battery pack 5, one end of the capacitor C7 and a drain of the MOS transistor Q1 are connected to an anode of the capacitor C3, a source of the MOS transistor Q1, a cathode of the diode V6 and a cathode of the diode V7, a drain of the MOS transistor Q3, one end of the inductor L1 and a twenty-fourth pin of the chip N1 are connected, the other end of the inductor L1, a drain of the MOS transistor Q5, a source of the MOS transistor Q7, an anode of the diode V4 and a diode V5 are connected, a cathode of the diode V4 and a drain of the MOS transistor Q7, one end of the capacitor C14, one end of the resistor R23, and a thirty-fourth pin of the chip N1 are connected to a thirty-fourth pin of the chip N23; the anodes of the diode V6 and the diode V7, the source of the MOS transistor Q3, the source of the MOS transistor Q5, one end of the resistor R6, and one end of the resistor R26 are connected, the other point of the resistor R26, one end of the resistor R8, the other end of the capacitor C14, the other end of the resistor R23, and the negative electrode of the capacitor C3 are connected and grounded, the other end of the resistor R6 is connected to the sixth pin of the chip N1, and the other end of the resistor R8 is connected to the fifth pin of the chip N1. When the input voltage is lower than the output voltage, the chip N1 in fig. 2 operates in a boost mode, the MOS transistor Q1 is always in a conducting state, Q3 is always in an off state, and Q5 and Q7 are in a high-frequency switching state. When the input voltage is higher than the output voltage, the chip N1 in fig. 2 operates in a step-down mode, the MOS transistor Q5 is always in an off state, the MOS transistor Q7 is always in an on state, and the MOS transistors Q1 and Q3 are in a high-frequency switching state.

With continued reference to fig. 2 to 3, the driving unit includes an optocoupler E3, a resistor R30, a resistor R32, a resistor R9, a diode V3, a resistor R11, a capacitor C20, an optocoupler E4, a resistor R34, a resistor R35, a resistor R33, a resistor R12, and a capacitor C24, one end of the resistor R30 is connected to a high-low level, the other end of the resistor R30, one end of the resistor R32, and a first pin of the optocoupler E3 are connected to one another, a second pin of the optocoupler E3 and the other end of the resistor R32 are connected to and grounded to the other end, a fourth pin of the optocoupler E3 is connected to one end of the resistor R9, the other end of the resistor R9, the positive electrode of the capacitor C3, and thirty-sixth to thirty-eight pins of the chip N1 are connected to one another, a third pin of the optocoupler E3, a cathode of the diode V3, one end of the resistor R11, one end of the capacitor C20, and a fourth pin of the chip N1 are connected to and grounded to one end of the capacitor C20; one end of the resistor R34 is connected with a high level and a low level, the other end of the resistor R34, one end of the resistor R35 and a first pin of the optical coupler E4 are connected, a second pin of the optical coupler E4 and the other end of the resistor R35 are connected and grounded, a fourth pin of the optical coupler E4, one end of the resistor R33 and one end of the resistor R12 are connected, the other end of the resistor R33, one end of the capacitor C24 and a tenth pin of the chip N1 are connected, and the other end of the capacitor C24, the other end of the resistor R12 and a third pin of the optical coupler E4 are connected and grounded. After one end of the resistor R30 and one end of the resistor R34 receive a high level, a third pin of the corresponding optocoupler E3 and a third pin of the optocoupler E4 are switched on, and a fourth pin and a tenth pin of the chip N1 receive signals, so that the chip N1 is triggered to start working, otherwise, after one end of the resistor R30 and one end of the resistor R34 receive a low level, the chip N1 stops working.

With reference to fig. 4, the output voltage trimming unit includes a capacitor C5, a capacitor C12, a capacitor C9, a diode V8, a diode V9, a capacitor C11, a resistor R36, a resistor R3, a resistor R4, a resistor R21, a resistor R5, a resistor R10, an optocoupler E1, an optocoupler E2, a resistor R1, a resistor R20, a resistor R22, and a resistor R29, wherein one end of the capacitor C5 is connected to one end of a resistor R23, one end of the capacitor C12, one end of the capacitor C9, an anode of the diode V8, and an anode of the diode V9, the other end of the capacitor C5 is connected to the other end of the capacitor C14, the other end of the capacitor C12, and the other end of the capacitor C9, an anode of the capacitor C11 is connected to a cathode of the diode V8, a cathode of the diode V9, and one end of the resistor R36, a cathode of the capacitor C11, the other end of the resistor R36, one end of the resistor R5 is connected to one end of the resistor R1, a third pin of the resistor E2, a fourth pin, a resistor R1, a resistor R3, a resistor R1, a resistor R20, a resistor R1, a resistor R4, and a resistor R20, and a resistor R1 + connected to ground, and a resistor R1; the first pin of the optical coupler E2, one end of the resistor R29 and one end of the resistor R22 are connected, the other end of the resistor R29 and the second pin of the optical coupler E2 are connected and grounded, and the other end of the resistor R22 is connected with a high level and a low level. Resistance R4, resistance R3, resistance R21 and resistance R5 series connection partial pressure, output voltage is VOUT +, resistance R1 that the first pin of opto-coupler E1 is connected connects the high level, its third pin switch-on, resistance R3 short circuit, resistance R22 that the first pin of opto-coupler E2 is connected connects the high level, its third pin switch-on, resistance R21 short circuit, so can make the divider resistance value change through opto-coupler E1 and E2, make output voltage VOUT + change, so the third pin through opto-coupler E1 and/or opto-coupler E2 switches on whether, finely tune output voltage VOUT +.

As shown in fig. 5 and 6, the DC/DC conversion module 8 includes a starting unit, a buck-boost chip U1, a voltage regulating unit, and a current regulating unit, and the starting unit, the voltage regulating unit, and the current regulating unit are all connected to the buck-boost chip U1.

With reference to fig. 5, the starting unit includes a capacitor C31 to a capacitor C34, a resistor R47, and a transistor Q10, wherein the positive electrode of the capacitor C31, the positive electrode of the capacitor C32, one end of the capacitor C33, one end of the capacitor C34, and a first pin of the buck-boost chip U1 are connected to the positive output terminal of the AC/DC charging module 7, the negative electrode of the capacitor C31, the negative electrode of the capacitor C32, the other end of the capacitor C33, the other end of the capacitor C34, one end of the resistor R47, the emitter of the transistor Q10, and a third pin of the buck-boost chip U1 are connected to the negative output terminal of the AC/DC charging module 7, the other end of the resistor R10 is connected to the base of the transistor Q10, and the collector of the transistor Q10 is connected to the second pin of the buck-boost chip U1. Make the second pin of buck-boost chip U1 switch on or close through giving triode Q10 high-low level to realize the start-up or close of buck-boost chip U1, there is the output between the eighth pin and the fourth pin of buck-boost chip U1 when starting.

The peripheral circuit of the buck-boost chip U1 comprises a resistor R42, a resistor R46, capacitors C35 to C38, a resistor R41 and a resistor R44, one end of the resistor R42 is connected with a sixth pin of the buck-boost chip U1, the other end of the resistor R42 is connected with one end of the resistor R46, the other end of the resistor R46, a fourth pin and a third pin of the buck-boost chip U1, one end of the capacitor C36, the negative electrode of the capacitor C37, the negative electrode of the capacitor C35, one end of the capacitor C38 and one end of the resistor R44 are connected and grounded, and the other end of the capacitor C38 and the other end of the resistor R44 are connected with one end of the resistor R41; the other end of the capacitor C36, the anode of the capacitor C37, the anode of the capacitor C35, and the other end of the resistor R41 are connected to serve as a voltage output port VOUT. The sixth pin of the buck-boost chip U1 is a voltage feedback pin of the buck-boost chip U1, the voltage of the buck-boost chip U1 is adjusted to be high or low through an optical coupler, and a voltage adjusting unit is specifically adopted for adjustment.

The current regulation unit includes opto-coupler E5, resistance R49, resistance R43, resistance R45 and resistance R48, the one end of resistance R43, resistance R48's one end and the fifth pin of buck-boost chip U1 are connected, the other end of resistance R43, resistance R48's the other end, resistance R45's one end and opto-coupler E5's fourth pin are connected, resistance R45's the other end and opto-coupler E5's third pin are connected with buck-boost chip U1's fourth pin, opto-coupler E5's first pin is connected with resistance R49's one end, resistance R49's another termination height level, opto-coupler E5's second pin ground connection. The first pin of opto-coupler E5 connects high level, and the second pin ground connection, opto-coupler E5 switch on, switch on between its fourth pin and the third pin, and the fourth pin has been equivalent to ground connection, and the output current of buck-boost chip U1 has just not been. On the contrary, the first pin of the optocoupler E5 is connected with a low level, the second pin is grounded, the optocoupler E5 is not conducted, the fourth pin and the third pin are not conducted, and the normal output current of the buck-boost chip U1 is obtained.

Continuing to refer to fig. 6, the voltage regulation unit includes a capacitor C39 to a capacitor C42, an operational amplifier N1A, a resistor R50 to a resistor R56, an operational amplifier N1B, a diode V10 and an optocoupler E6, a second pin of the operational amplifier N1A is connected to a first pin thereof and one end of the resistor R52, a third pin of the operational amplifier N1A is connected to a feedback voltage, the other end of the resistor R52, one end of the resistor R50, one end of the capacitor C39, one end of the resistor R51 and a sixth pin of the operational amplifier N1B are connected, a fifth pin of the operational amplifier N1B is connected to one end of the resistor R55, one end of the capacitor C42 and a cathode of the diode V10 through a resistor R54, and an anode of the diode V10 is connected to the other end of the capacitor C42 and grounded; the other end of the resistor R51 is connected with one end of the capacitor C40, the other end of the resistor R50, the other end of the capacitor C39, the other end of the capacitor C40, the output end of the operational amplifier N1B and a first pin of the optocoupler E6 are connected, and a second pin of the optocoupler E6 is grounded through a resistor R56; the third pin of the optocoupler E6 is grounded, and the fourth pin of the optocoupler E6 is connected with the sixth pin of the buck-boost chip U1 through a resistor R53. The third pin of the operational amplifier N1A is externally connected with a high level, the circuit is started, the voltage is also an output end when being followed to the first pin of the operational amplifier N1A, then the voltage is compared with the voltage between the fifth pin and the sixth pin of the operational amplifier N1B, the pulse width of the seventh pin is adjusted, the conduction ratio between the first pin and the second pin of the optocoupler E6 is adjusted, the output voltage of the optocoupler E6 is changed, the changed voltage is fed back to the sixth pin of the buck-boost chip U1, and the output voltage of the buck-boost chip U1 is finely adjusted.

As shown in fig. 7 to 11, the inverter power supply 10 includes an LLC resonant circuit, a rectifier circuit, an inverter circuit, a filter circuit, and an electromagnetic compatibility circuit, and the LLC resonant circuit, the rectifier circuit, the inverter circuit, the filter circuit, and the electromagnetic compatibility circuit are connected in sequence. The inverter 10 is mainly used for realizing alternating current power supply under the condition that no alternating current exists in the field. The rectification circuit and the inverter circuit both adopt conventional circuits, for example, the rectification circuit can adopt an uncontrolled rectification circuit disclosed in the topology and the control method of the air conditioner inverter for the electric rail locomotive disclosed in the Chinese patent publication No. CN114583968A, the inverter circuit can adopt a single-phase full-bridge inverter circuit in the patent application, and the output of the uncontrolled rectification circuit is directly connected with the input of the single-phase full-bridge inverter circuit. Because the inverter circuit adopts the single-phase full-bridge inverter circuit which mainly comprises MOS tubes, the MOS tubes have small internal resistance and large peak current, and can carry overlarge current in a short time, the peak power of the whole circuit is large, and the starting problem of high-power equipment under the field condition can be solved.

Continuing to refer to fig. 7, the LLC resonant circuit includes an inductor L11, a capacitor C51, a capacitor C52, a capacitor C53, and a transformer T1, one end of the inductor L11 and one end of the capacitor C51 are connected to the output end of the lithium battery pack 5, the other end of the inductor L11 is connected to the other end of the capacitor C51, one end of the capacitor C52, one end of the capacitor C53, and one end of the primary side of the transformer T1 are connected, the other end of the primary side of the transformer T1 is grounded, the other end of the capacitor C52 and the other end of the capacitor C53 are connected to and grounded to one end of the capacitor C51, and the secondary side of the transformer T1 is sequentially connected to the rectifier circuit and the inverter circuit. The conversion efficiency of the circuit can be improved through the LLC resonant circuit, so that the power utilization rate is high.

Referring to fig. 8, the filter circuit includes an inductor L12, a capacitor C54, a capacitor C55, a relay contact K1, a relay coil J2, a resistor R65, a transistor Q11, a diode V11, a resistor R66, a capacitor C56, and a capacitor C57, one end of the inductor L12 and one end of the capacitor C54 are connected to an output terminal of the inverter circuit, the inductor L12 is connected to the other end of the capacitor C54, one end of the capacitor C55 and one end of the relay contact K1 are connected to one end of the capacitor C54, the other end of the capacitor C55 and the other end of the capacitor C54 are connected to each other, the other end of the relay contact K1 and the other end of the capacitor C55 are connected to the emc circuit, one end of the resistor R66 is connected to a high/low level, the other end of the resistor R66, one end of the resistor R65, and a base of the transistor Q11 are connected to an emitter of the transistor Q11 and the other end of the resistor R65 and are connected to ground, a collector of the diode V11, an anode of the relay coil J2 and a cathode of the capacitor C56 are connected to the power supply and a cathode of the capacitor C57 and a capacitor C57 are connected to ground. And the interference resistance function is realized by filtering the disturbance of the input voltage through an LC filter circuit consisting of the capacitor C54, the capacitor C55 and the inductor L12. In addition, a high level is provided for the base electrode of the triode Q11, so that the triode Q11 is conducted, the relay coil J2 is electrified, the corresponding relay contact K1 is attracted, and the whole filter circuit is conducted. On the contrary, when a low level is given to the base electrode of the triode Q11, the triode Q11 is turned off, so that the relay coil J2 is de-energized, the corresponding relay contact K1 is disconnected, and the whole filter circuit stops working. The start-stop control can timely turn off the filter circuit when the circuit fails.

Referring to fig. 9, the electromagnetic compatibility circuit includes a capacitor C58, a common mode inductor L14, a capacitor C59, a resistor R68, a resistor R67, a variable resistor RV1, a capacitor C60, a capacitor C61, and an output terminal, one end of the capacitor C58 and one end of one coil of the common mode inductor L14 are both connected to the other end of the relay contact K1, the other end of the capacitor C58 and one end of the other coil of the common mode inductor L14 are both connected to the other end of the capacitor C55, the other end of one coil of the common mode inductor L14, one end of the capacitor C59, one end of the resistor R68, one end of the variable resistor RV1, and one end of the capacitor C60 are connected to and serve as one end of the output terminal, the other end of the common mode inductor L14, the other end of the capacitor C59, one end of the resistor R67, the other end of the variable resistor RV1, and one end of the capacitor C61 are connected to and serve as one end of the output terminal, the other end of the resistor R68 and the other end of the capacitor C61 are connected to and grounded. Under the field environment, to the higher consumer of required precision, if the electromagnetic compatibility effect is not good, equipment probably can't move, for example, under the unstable condition of the commercial power that the TV set inserts, the splash screen appears easily, but if the electromagnetic compatibility is effectual, can filter the interference to a certain extent to voltage stability, the TV set can not appear the splash screen phenomenon.

The utility model discloses an inverter 10's protect function is complete, still includes output voltage detection circuitry, main contactor control circuit, through output voltage detection circuitry, can real-time detection output voltage, guarantee circuit safety, and main contactor control circuit can connect under the reverse condition at the input, realizes preventing reverse protection. Fig. 10 shows a schematic diagram of an output voltage detection circuit, and fig. 11 shows a schematic diagram of a main contactor control circuit.

Through the technical scheme, the utility model discloses set up hand generating set 1, these three kinds of modes of solar cell panel 3 and commercial power input charge to lithium cell group 5, the power supply mode is complete, and lithium cell group 5's output port is connected with DCDC power 9, output DC power supply, lithium cell group 5's output port is connected with invertion power supply 10, output AC power supply, the output power supply type has included direct current and two kinds of forms of interchange, complete type, satisfy people to various environment and various electrical equipment's user demand on the whole.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a multifunctional mobile power supply, its characterized in that, including hand generating set, DC/DC buck-boost module, solar cell panel, MPPT solar charging controller, lithium cell group, AC/DC charging module, DC/DC conversion module, DC/DC power and invertion power supply, hand generating set's output port and DC/DC buck-boost module's power input port are connected, DC/DC buck-boost module's power output end and lithium cell group's input port are connected, solar cell panel's power output port and MPPT solar charging controller's input port are connected, MPPT solar charging controller's output port and lithium cell group's input port are connected, the commercial power input is connected with lithium cell group's input port through AC/DC charging module and DC/DC conversion module, lithium cell group's output port is connected with DC/DC power and invertion power supply respectively.

2. The multifunctional mobile power supply of claim 1, further comprising a BMS battery management module, wherein the BMS battery management module is connected to the lithium battery pack.

3. The multifunctional mobile power supply of claim 1, wherein the DC/DC buck-boost module is of a type UC2843AN.

4. The multifunctional mobile power supply of claim 1, wherein said MPPT solar charging controller is model MA2430N15.

5. The multifunctional mobile power supply of claim 1, wherein the DC/DC power supply comprises a driving unit, a buck-boost control unit and an output voltage fine-tuning unit, the driving unit is connected to the buck-boost control unit, an output port of the lithium battery pack is connected to an input port of the buck-boost control unit, and an output port of the buck-boost control unit is connected to the output voltage fine-tuning unit.

6. The multifunctional mobile power supply according to claim 5, wherein the buck-boost control unit comprises a chip N1, a capacitor C3, a capacitor C7, a MOS transistor Q1, a MOS transistor Q3, a MOS transistor Q5, a MOS transistor Q7, a diode V4 to a diode V7, an inductor L1, a resistor R6, a resistor R26, a resistor R8, a capacitor C14 and a resistor R23, wherein two ends of the capacitor C3 are connected with an output port of the lithium battery pack, one end of the capacitor C7 and a drain electrode of the MOS transistor Q1 are connected with an anode of the capacitor C3, a source electrode of the MOS transistor Q1, a cathode electrode of the diode V6 and the diode V7, a drain electrode of the MOS transistor Q3, one end of the inductor L1 and a twenty-fourth pin of the chip N1 are connected, the other end of the inductor L1, a drain electrode of the MOS transistor Q5, a source electrode of the MOS transistor Q7, an anode electrode of the diode V4 and a diode V5 are connected, a cathode electrode of the diode V4 and a drain electrode of the diode V5 and a drain electrode of the MOS transistor Q7, one end of the capacitor C14, one end of the resistor R23 and a thirty-fourth pin of the resistor N1 are connected with a thirty-fourth pin of the thirty-second pin of the chip; the anodes of the diode V6 and the diode V7, the source of the MOS transistor Q3, the source of the MOS transistor Q5, one end of the resistor R6 and one end of the resistor R26 are connected, the other point of the resistor R26, one end of the resistor R8, the other end of the capacitor C14, the other end of the resistor R23 and the cathode of the capacitor C3 are connected and grounded, the other end of the resistor R6 is connected with a sixth pin of the chip N1, and the other end of the resistor R8 is connected with a fifth pin of the chip N1;

the output voltage fine adjustment unit comprises a capacitor C5, a capacitor C12, a capacitor C9, a diode V8, a diode V9, a capacitor C11, a resistor R36, a resistor R3, a resistor R4, a resistor R21, a resistor R5, a resistor R10, an optocoupler E1, an optocoupler E2, a resistor R1, a resistor R20, a resistor R22 and a resistor R29, wherein one end of the capacitor C5 is connected with one end of a resistor R23, one end of the capacitor C12, one end of the capacitor C9, the anode of the diode V8 and the anode of the diode V9, the other end of the capacitor C5 is connected with the other end of a capacitor C14, the other end of the capacitor C12 and the other end of the capacitor C9, the anode of the capacitor C11 is connected with the cathode of the diode V8, the cathode of the diode V9 and one end of the resistor R36, the negative electrode of the capacitor C11, the other end of the resistor R36 and one end of the resistor R5 are connected, the other end of the resistor R5, the third pin of the optocoupler E2 and one end of the resistor R21 are connected, the other end of the resistor R21, the fourth pin of the optocoupler E2, one end of the resistor R3 and the third pin of the optocoupler E1 are connected, the fourth pin of the optocoupler E1, one end of the resistor R4, one end of the resistor R10 and the other end of the resistor R3 are connected, the other end of the resistor R4 and the other end of the resistor R10 are connected and serve as a voltage output port VOUT +, a first pin of the optocoupler E1, one end of the resistor R1 and one end of the resistor R20 are connected, the other end of the resistor R20 and the second pin of the optocoupler E1 are connected and grounded, and the other end of the resistor R1 is connected with a high-low level; the first pin of the optical coupler E2, one end of the resistor R29 and one end of the resistor R22 are connected, the other end of the resistor R29 and the second pin of the optical coupler E2 are connected and grounded, and the other end of the resistor R22 is connected with a high level and a low level.

7. The multifunctional mobile power supply of claim 1, wherein the DC/DC conversion module comprises a starting unit, a buck-boost chip U1, a voltage regulating unit and a current regulating unit, and the starting unit, the voltage regulating unit and the current regulating unit are all connected to the buck-boost chip U1.

8. The multifunctional mobile power supply of claim 7, wherein the starting unit comprises capacitors C31 to C34, a resistor R47, and a transistor Q10, wherein a positive electrode of the capacitor C31, a positive electrode of the capacitor C32, one end of the capacitor C33, one end of the capacitor C34, a first pin of the buck-boost chip U1 are connected to and connected to an output positive terminal of the AC/DC charging module, a negative electrode of the capacitor C31, a negative electrode of the capacitor C32, the other end of the capacitor C33, the other end of the capacitor C34, one end of the resistor R47, an emitter of the transistor Q10, a third pin of the buck-boost chip U1 are connected to and connected to an output negative terminal of the AC/DC charging module, the other end of the resistor R10 is connected to a base of the transistor Q10, and a collector of the transistor Q10 is connected to a second pin of the buck-boost chip U1;

the peripheral circuit of the buck-boost chip U1 comprises a resistor R42, a resistor R46, capacitors C35 to C38, a resistor R41 and a resistor R44, one end of the resistor R42 is connected with a sixth pin of the buck-boost chip U1, the other end of the resistor R42 is connected with one end of the resistor R46, the other end of the resistor R46, a fourth pin and a third pin of the buck-boost chip U1, one end of the capacitor C36, the negative electrode of the capacitor C37, the negative electrode of the capacitor C35, one end of the capacitor C38 and one end of the resistor R44 are connected and grounded, and the other end of the capacitor C38 and the other end of the resistor R44 are connected with one end of the resistor R41; the other end of the capacitor C36, the anode of the capacitor C37, the anode of the capacitor C35 and the other end of the resistor R41 are connected and used as a voltage output port VOUT;

9. The multifunctional mobile power supply of claim 1, wherein the inverter power supply comprises an LLC resonant circuit, a rectifying circuit, an inverter circuit, a filter circuit, and an electromagnetic compatibility circuit, and the LLC resonant circuit, the rectifying circuit, the inverter circuit, the filter circuit, and the electromagnetic compatibility circuit are connected in sequence.

10. The multifunctional mobile power supply according to claim 9, wherein the LLC resonant circuit comprises an inductor L11, a capacitor C51, a capacitor C52, a capacitor C53, and a transformer T1, one end of the inductor L11 and one end of the capacitor C51 are connected to the output end of the lithium battery pack, the other end of the inductor L11 is connected to the other end of the capacitor C51, one end of the capacitor C52, one end of the capacitor C53, and one end of the primary side of the transformer T1 are connected, the other end of the primary side of the transformer T1 is grounded, the other end of the capacitor C52 and the other end of the capacitor C53 are connected to one end of the capacitor C51 and grounded, and the secondary side of the transformer T1 is connected to the rectifying circuit and the inverting circuit in sequence;