Multifunctional power supply

Abstract

The utility model relates to a multifunctional power supply, which comprises a battery, a quick plug interface and a shell, the battery comprises a ternary lithium iron core, the battery is connected with a charging circuit and an inverter module, the charging circuit and the inverter module are both connected with an MCU chip, the charging circuit comprises a rectifying circuit and a charging chip, and the rectifying circuit is connected with the charging chip. The inverter module comprises a push-pull booster circuit, a direct-current filter circuit, an inverter circuit and an alternating-current filter circuit, and the output ends of the alternating-current filter circuit and the voltage conversion chip are connected with quick-plug interfaces; the output end of the MCU chip is respectively connected with the charging chip, the push-pull booster circuit and the inverter circuit, and the MCU chip is also provided with a display circuit; a handle is arranged at the upper end of the shell. According to the utility model, the battery is arranged, the battery is connected with the charging circuit, the inverter module and the MCU chip, energy storage and DC-AC conversion of the power supply are realized, the quick plug interface is arranged and applied to various scenes, and the portable power supply is convenient to carry by combining with the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile power supplies, in particular to a multifunctional power supply. Background Art

[0002] As people become more and more dependent on electronic products, mobile phones, laptops, tablets and other similar charging devices are needed in many scenarios. When going out or traveling, people often have to bring a large-capacity charger, so mobile power supplies are widely used.

[0003] In road rescue, vehicle repair and equipment repair scenarios, temporary power supplies are needed to power maintenance tools. When the vehicle battery power supply cannot complete the ignition, a temporary power supply is needed for jump starting. These temporary power supplies must have DC to AC conversion capabilities and fast connection capabilities. Existing temporary power supplies are mostly fuel generators, which have a complex structure and are not easy to carry.

[0004] Especially in winter, the car battery voltage is often insufficient and the car cannot start. Therefore, there is an urgent need for a multifunctional power supply that is easy to carry and has rich functions for use in outdoor scenarios. Summary of the invention

[0005] In order to solve the problem that the existing fuel generator is inconvenient to use and carry as a temporary power source, the utility model proposes a multifunctional power source, which is provided with a battery. The battery is connected with a charging circuit, an inverter module and an MCU chip to realize energy storage and DC-AC conversion of the power source. A quick-plug interface is provided for use in various scenarios, and the housing is combined for easy carrying.

[0006] In order to achieve the above-mentioned purpose, a multifunctional power supply includes a battery, a quick-plug interface and a shell, the battery includes a ternary iron-lithium battery cell, the battery is connected to a charging circuit and an inverter module, the charging circuit and the inverter module are both connected to an MCU chip, the charging circuit includes a rectifier circuit and a charging chip, the rectifier circuit is connected to the mains, the output end of the rectifier circuit is electrically connected to the charging chip, the charging chip is connected to the battery, and the output end of the battery is connected to a voltage conversion chip;

[0007] The output end of the battery is also connected to the inverter module, which includes a push-pull boost circuit, a DC filter circuit, an inverter circuit and an AC filter circuit. The push-pull boost circuit is connected to the battery, and the other end of the push-pull boost circuit is sequentially connected to the DC filter circuit and the inverter circuit. The output end of the inverter circuit is connected to the AC filter circuit.

[0008] The output ends of the AC filter circuit and the voltage conversion chip are both connected to quick-plug interfaces;

[0009] The output end of the MCU chip is respectively connected to the charging chip, the push-pull boost circuit and the inverter circuit, and the MCU chip is also provided with a display circuit;

[0010] A handle is provided on the upper end of the shell.

[0011] Furthermore, the push-pull boost circuit includes a transformer, a drive circuit and a chopper circuit. The drive circuit is connected between the primary side of the transformer and the power supply. The drive circuit includes a MOS tube. The MOS tube G base is connected to the IO pin of the MCU chip. The secondary side of the transformer is connected to the chopper circuit, and the chopper circuit is connected to the DC filter circuit.

[0012] The boost circuit is used to raise the voltage. The battery current passes through the transformer and chopper circuit to increase the voltage. The MCU chip controls the output of the primary side of the transformer through the MOS tube. The circuit structure is simple and easy to control.

[0013] Furthermore, the inverter circuit includes a bridge inverter, the bridge inverter includes multiple bridge arms, the input end of the bridge arm is connected to a driver chip, the input end of the driver chip is connected to an IO pin of an MCU chip, and the output ends of the multiple bridge arms are respectively connected to an AC filter circuit.

[0014] The inverter circuit converts direct current into alternating current and can be used as a single-phase power supply to power AC power equipment.

[0015] Furthermore, the rectifier circuit includes a bridge rectifier circuit, the output end of the bridge rectifier circuit is connected to the charging chip, and the control end of the charging chip is connected to the MCU chip;

[0016] A DC switch is provided between the voltage conversion chip and the quick-plug interface.

[0017] The battery is easy to charge, the rectifier circuit realizes AC-DC current conversion, and the DC part is output by the voltage conversion chip after the battery is charged.

[0018] Furthermore, an AC switch is provided between the output end of the DC filter circuit and the quick-plug interface.

[0019] A DC switch and an AC switch are provided to protect the hardware circuit.

[0020] Furthermore, the quick-plug interface includes a USB interface, a socket interface and a start-up cable interface.

[0021] Set up various types of interfaces to facilitate power supply.

[0022] Furthermore, the display circuit includes an LED display screen, and the LED display screen is communicatively connected to the MCU chip.

[0023] An LED display screen is provided to facilitate display of power level.

[0024] Furthermore, the shell is a square structure with a hollow interior, a quick-plug interface and a display circuit are arranged on the shell, an LED light is arranged on the side of the shell, the LED light is electrically connected to the battery, and an LED light switch is connected in series between the LED light and the battery.

[0025] LED lights are provided for easy illumination.

[0026] Through the above technical solution, the beneficial effects of the utility model are:

[0027] The utility model is easy to carry and use, has the ability to output direct current and alternating current, and is provided with a quick-plug interface to meet the power needs of direct current and alternating current appliances. A ternary iron-lithium battery cell is provided to form a battery for power storage, a rectifier circuit and a charging chip constitute a charger, the rectifier circuit is connected to the mains for charging, and the charging chip is connected to an MCU chip, providing a hardware basis for realizing intelligent charging control. The battery outputs direct current, and the battery is connected to a voltage conversion chip to output different levels of DC current, such as DC24V, DC12V, DC5V and DC3.3V. The battery is connected to an inverter module, and the inverter module includes a push-pull boost circuit, a DC filter circuit, an inverter circuit and an AC filter circuit. The push-pull boost circuit is connected to the battery, and the push-pull boost circuit is used to increase the voltage output by the battery, and then the DC-AC conversion is completed by the inverter circuit through the DC filter circuit. The inverter module outputs AC220V current, and the connection of the electrical equipment is realized in combination with the quick-plug interface. It is convenient to use and meets the use of various electrical equipment. In addition, a display circuit and an MCU chip are provided to realize power supply detection and control, as well as parameter display. A shell and a handle are also provided. The shell protects the hardware circuit, and the handle facilitates carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the structural schematic diagrams of a multifunctional power supply of the utility model;

[0029] Figure 2 This is the second structural schematic diagram of a multifunctional power supply of the utility model;

[0030] Figure 3 The utility model is an electrical schematic diagram of a multifunctional power supply.

[0031] Figure numbers: 1 is a battery, 2 is a quick-plug interface, 3 is a housing, 4 is a charging circuit, 5 is an inverter module, 6 is an MCU chip, 7 is a voltage conversion chip, 8 is a display circuit, 9 is a DC switch, 10 is an AC switch, 11 is an LED lamp, 12 is an LED light switch, 13 is a handle, 401 is a rectifier circuit, 402 is a charging chip, 501 is a push-pull boost circuit, 502 is a DC filter circuit, 503 is an inverter circuit, and 504 is an AC filter circuit. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0033] Example 1

[0034] like Figures 1 to 3 As shown, a multifunctional power supply includes a battery 1, a quick-plug interface 2 and a housing 3, wherein the battery 1 includes a ternary iron-lithium battery cell, the battery 1 is connected to a charging circuit 4 and an inverter module 5, the charging circuit 4 and the inverter module 5 are both connected to an MCU chip 6, the charging circuit 4 includes a rectifier circuit 401 and a charging chip 402, the rectifier circuit 401 is connected to the mains, the output end of the rectifier circuit 401 is electrically connected to the charging chip 402, the charging chip 402 is connected to the battery 1, and the output end of the battery 1 is connected to a voltage conversion chip 7;

[0035] The output end of the battery 1 is also connected to the inverter module 5, and the inverter module 5 includes a push-pull boost circuit 501, a DC filter circuit 502, an inverter circuit 503 and an AC filter circuit 504. The push-pull boost circuit 501 is connected to the battery 1, and the other end of the push-pull boost circuit 501 is sequentially connected to the DC filter circuit 502 and the inverter circuit 503, and the output end of the inverter circuit 503 is connected to the AC filter circuit 504;

[0036] The output ends of the AC filter circuit 504 and the voltage conversion chip 7 are both connected to the quick-plug interface 2;

[0037] The output end of the MCU chip 6 is respectively connected to the charging chip 402, the push-pull boost circuit and the inverter circuit 503, and the MCU chip 6 is also provided with a display circuit 8;

[0038] A handle 13 is provided at the upper end of the housing 3 .

[0039] The shell 3 is made of a 1mm thick cold-rolled steel plate, and an air duct is arranged on the shell 3. The air duct includes Figure 2 The circular ventilation holes are arranged on the side of the middle shell 3, and Figure 3 Two through holes are arranged at the upper end of the middle shell 3 , and two fans are arranged at the through holes. The fans are connected to the battery 1 . When in operation, the fans exhaust air to the outside to cool the hardware circuit in the shell 3 .

[0040] The push-pull boost circuit 501 includes a transformer, a drive circuit and a chopper circuit. The drive circuit is connected between the primary side of the transformer and the power supply. The drive circuit includes a MOS tube. The MOS tube G base is connected to the IO pin of the MCU chip 6. The secondary side of the transformer is connected to the chopper circuit, and the chopper circuit is connected to the DC filter circuit 502.

[0041] The inverter circuit 503 includes a bridge inverter, which includes multiple bridge arms. The input end of the bridge arm is connected to a driver chip, the input end of the driver chip is connected to the IO pin of the MCU chip 6, and the output ends of the multiple bridge arms are respectively connected to the AC filter circuit 504.

[0042] The rectifier circuit 401 includes a bridge rectifier circuit, the output end of the bridge rectifier circuit is connected to the charging chip 402, and the control end of the charging chip 402 is connected to the MCU chip 6;

[0043] A DC switch 9 is provided between the voltage conversion chip 7 and the quick-plug interface 2 .

[0044] like Figure 1 As shown, an AC switch 10 is provided between the output end of the DC filter circuit 502 and the quick-plug interface 2 .

[0045] like Figure 1-2 As shown, the quick-plug interface 2 includes a USB interface, a socket interface, and a start-up cable interface.

[0046] like Figure 1-2 As shown, the display circuit 8 includes an LED display screen, and the LED display screen is communicatively connected to the MCU chip 6.

[0047] like Figure 1-2 As shown, the housing 3 is a square structure with a hollow interior, the housing 3 is provided with a quick-plug interface 2 and a display circuit 8, the side of the housing 3 is provided with an LED lamp 11, the LED lamp 11 is electrically connected to the battery 1, and an LED lamp switch 12 is connected in series between the LED lamp 11 and the battery 1. The LED lamp switch 12 is a 15W LED lamp.

[0048] In this embodiment, the MCU chip 6 is an STM32 single-chip microcomputer, and the driver chip is an IR2310 chip. The capacity of the battery 1 is 2.4 kWh, and the maximum output power of the inverter module 5 is 1600W, which can continuously supply power to a 1000W power device for 2.4 hours. The working environment is -30℃~60℃. According to the detection, it can start a 24V vehicle more than 150 times, a 12V vehicle more than 300 times, and an instantaneous current of 5000A.

[0049] When a DC power supply is required for operation, press the DC switch 9, the DC power supply is connected to the quick-plug interface 2, and power is taken through the USB interface. When using DC24V and DC12V power supplies, first connect the power-consuming device to the starting cable interface, then press the DC switch 9, and the starting cable interface outputs DC24V and DC12V current, which can be used to power the cigarette lighter, and connect the quick-plug antifreeze silicone starting cable to provide power for the vehicle with undervoltage battery jump-start operation. A fuse is provided between the quick-plug antifreeze silicone starting cable and the starting cable interface to prevent the two contacts of the quick-plug antifreeze silicone starting cable from short-circuiting and causing the battery 1 to burn out.

[0050] The battery parameters can be viewed through the LED display, including temperature, voltage and power.

[0051] During operation, an AC power supply is required, and the electrical equipment is plugged into a two-hole socket or a three-hole socket as required. Then, the AC switch 10 is pressed, and the output end of the DC filter circuit 502 is connected to the quick-plug interface 2, and the electrical equipment is powered on.

[0052] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A multifunctional power supply, comprising a battery (1), a quick-connect interface (2) and a housing (3), characterized in that: The battery (1) comprises a ternary iron-lithium battery cell, the battery (1) is connected to a charging circuit (4) and an inverter module (5), the charging circuit (4) and the inverter module (5) are both connected to an MCU chip (6), the charging circuit (4) comprises a rectifier circuit (401) and a charging chip (402), the rectifier circuit (401) is connected to the mains, the output end of the rectifier circuit (401) is electrically connected to the charging chip (402), the charging chip (402) is connected to the battery (1), and the output end of the battery (1) is connected to a voltage conversion chip (7); The output end of the battery (1) is also connected to an inverter module (5), the inverter module (5) comprising a push-pull boost circuit (501), a DC filter circuit (502), an inverter circuit (503) and an AC filter circuit (504), the push-pull boost circuit (501) being connected to the battery (1), the other end of the push-pull boost circuit (501) being sequentially connected to the DC filter circuit (502) and the inverter circuit (503), and the output end of the inverter circuit (503) being connected to the AC filter circuit (504); The output ends of the AC filter circuit (504) and the voltage conversion chip (7) are both connected to a quick-plug interface (2); The output end of the MCU chip (6) is respectively connected to the charging chip (402), the push-pull boost circuit and the inverter circuit (503); the MCU chip (6) is also provided with a display circuit (8); A handle (13) is provided at the upper end of the housing (3).

2. A multifunctional power supply according to claim 1, characterized in that: The push-pull boost circuit (501) comprises a transformer, a drive circuit and a chopper circuit; the drive circuit is connected between the primary side of the transformer and the power supply; the drive circuit comprises a MOS tube; the G base of the MOS tube is connected to the IO pin of the MCU chip (6); the secondary side of the transformer is connected to the chopper circuit; and the chopper circuit is connected to the DC filter circuit (502).

3. A multifunctional power supply according to claim 1, characterized in that: The inverter circuit (503) comprises a bridge inverter, the bridge inverter comprises a plurality of bridge arms, the input end of the bridge arm is connected to a driver chip, the input end of the driver chip is connected to an IO pin of an MCU chip (6), and the output ends of the plurality of bridge arms are respectively connected to an AC filter circuit (504).

4. A multifunctional power supply according to claim 1, characterized in that: The rectifier circuit (401) comprises a bridge rectifier circuit, the output end of the bridge rectifier circuit is connected to the charging chip (402), and the control end of the charging chip (402) is connected to the MCU chip (6); A DC switch (9) is provided between the voltage conversion chip (7) and the quick-plug interface (2).

5. A multifunctional power supply according to claim 1, characterized in that: An AC switch (10) is provided between the output end of the DC filter circuit (502) and the quick-plug interface (2).

6. A multifunctional power supply according to claim 1, characterized in that: The quick-plug interface (2) comprises a USB interface, a socket interface, and a start-up cable interface.

7. A multifunctional power supply according to claim 2, characterized in that: The display circuit (8) comprises an LED display screen, and the LED display screen is communicatively connected to the MCU chip (6).

8. A multifunctional power supply according to claim 1, characterized in that: The housing (3) is a square structure with a hollow interior. The housing (3) is provided with a quick-plug interface (2) and a display circuit (8). An LED light (11) is provided on the side of the housing (3). The LED light (11) is electrically connected to the battery (1). An LED light switch (12) is connected in series between the LED light (11) and the battery (1).

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