Portable emergency power supply

Abstract

The utility model discloses a portable emergency power supply, which comprises a shell and an emergency power supply system arranged in the shell, and the emergency power supply system comprises a lithium battery pack, a lithium battery charging module, a low dropout linear regulator, a power supply management module, a singlechip module, a BOOST circuit and a two-bus communication modulator, the lithium battery charging module is electrically connected with the lithium battery pack, the lithium battery pack is electrically connected with the single-chip microcomputer module through the low dropout linear regulator, the lithium battery pack is electrically connected with the two-bus communication modulator through the BOOST circuit, and the single-chip microcomputer module is in signal connection with the power management module and controls on-off of the lithium battery pack. The single-chip microcomputer module is in signal connection with the two-bus communication modulator and controls power supply to the emergency lamp. The portable emergency power supply has the advantages of being compact in structure, small in size, light in weight and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to a portable emergency power supply. Background Art

[0002] The working voltage of lamps controlled by centralized power supply is generally low voltage DC 36V, which requires centralized power supply from emergency power supply. Emergency lighting lamps are usually non-continuous, and the normal working state is that the lamp is not lit. If the emergency lighting lamp is lit, the emergency power supply needs to send emergency communication instructions through the two-bus communication modulator, otherwise the emergency lighting lamp will not light up even if the DC 36V is connected. The minimum power of conventional emergency power supply is more than 100W, which is large in size and weight. It is not convenient to carry it to light up the emergency lighting lamp for demonstration to customers, nor is it convenient to install it on small exhibition boards. There are certain limitations. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a portable emergency power supply which has a compact structure, a small volume, a light weight and is easy to use.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A portable emergency power supply comprises a shell and an emergency power supply system arranged in the shell, wherein the emergency power supply system comprises a lithium battery pack, a lithium battery charging module, a low voltage difference linear regulator, a power management module, a single-chip microcomputer module, a BOOST boost circuit and a two-bus communication modulator, wherein the lithium battery charging module is electrically connected to the lithium battery pack, the lithium battery pack is electrically connected to the single-chip microcomputer module through the low voltage difference linear regulator, the lithium battery pack is electrically connected to the two-bus communication modulator through the BOOST boost circuit, the single-chip microcomputer module is signal-connected to the power management module to control the on and off of the lithium battery pack, and the single-chip microcomputer module is signal-connected to the two-bus communication modulator to control the power supply to the emergency lamp.

[0006] As a further improvement of the above technical solution:

[0007] The lithium battery pack is composed of three lithium batteries connected in series, and the rated voltage is 11.1V.

[0008] The lithium battery charging module comprises a USB TYPE-C interface and a boost circuit, wherein the input side of the boost circuit is connected to the USB TYPE-C interface, and the output side is connected to the lithium battery pack.

[0009] The input side of the low voltage difference linear regulator is connected to the lithium battery pack, and the output side is connected to the single chip microcomputer module, and is used to reduce the voltage of 11.1V to 5V to supply power to the single chip microcomputer module.

[0010] The input side of the BOOST boost circuit is connected to the lithium battery pack, and the output side is connected to the two-bus communication modulator, and is used to boost the voltage of 11.1V to 36V to power the two-bus communication modulator.

[0011] The output side of the two-bus communication modulator is connected to an emergency lamp.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] The portable emergency power supply of the utility model adopts a lithium battery pack, which has the advantages of high energy density, low self-discharge rate and large output power, and can effectively reduce the volume and weight of the battery pack. At the same time, it is equipped with a lithium battery charging module, which can be quickly charged and recycled, and has a long service life; the lithium battery charging module, low voltage difference linear regulator, power management module, single-chip microcomputer module, BOOST boost circuit and two-bus communication modulator are integrated on the PCB board, so that the overall structure of the portable emergency power supply is compact, small in size, light in weight, and easy to use, so that it is convenient to carry it with you to light up the emergency lamps in outdoor environments for display to customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a portable emergency power supply.

[0015] Figure 2 This is a schematic diagram of the disassembled state of the portable emergency power supply.

[0016] Figure 3 This is the structural block diagram of the emergency power supply system.

[0017] Legend:

[0018] 1. Shell; 2. Emergency power supply system; 201. Lithium battery pack; 202. Lithium battery charging module; 203. Low voltage drop linear regulator; 204. Power management module; 205. Single chip microcomputer module; 206. BOOST boost circuit; 207. Two-bus communication modulator; 3. Emergency lighting. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 3As shown, the portable emergency power supply of this embodiment includes a shell 1 and an emergency power supply system 2 arranged in the shell 1, the emergency power supply system 2 includes a lithium battery pack 201, a lithium battery charging module 202, a low voltage difference linear regulator 203, a power management module 204, a single-chip module 205, a BOOST boost circuit 206 and a two-bus communication modulator 207, the lithium battery charging module 202 is electrically connected to the lithium battery pack 201, the lithium battery pack 201 is electrically connected to the single-chip module 205 through the low voltage difference linear regulator 203, the lithium battery pack 201 is electrically connected to the two-bus communication modulator 207 through the BOOST boost circuit 206, the single-chip module 205 is signal-connected to the power management module 204 to control the on and off of the lithium battery pack 201, and the single-chip module 205 is signal-connected to the two-bus communication modulator 207 to control the power supply to the emergency lamp 3. The portable emergency power supply adopts a lithium battery pack 201, which has the advantages of high energy density, low self-discharge rate and high output power, and can effectively reduce the volume and weight of the battery pack. At the same time, a lithium battery charging module 202 is provided, which can be quickly charged and recycled, and has a long service life; the lithium battery charging module 202, the low voltage difference linear regulator 203, the power management module 204, the single-chip computer module 205, the BOOST boost circuit 206 and the two-bus communication modulator 207 are integrated on the PCB board, so that the portable emergency power supply has a compact overall structure, a small size, a light weight, and is easy to use, so that it is convenient to carry it with you to light up the emergency lamps in outdoor environments for display to customers.

[0021] Preferably, the lithium battery pack 201 is composed of three lithium batteries connected in series, and the rated voltage is 11.1V. In this embodiment, the lithium battery pack 201 is composed of three 18650 lithium batteries connected in series, and the nominal voltage of each 18650 lithium battery is 3.7V, which has the advantages of long service life, good working stability, and high safety performance; because the output / input voltage ratio of the BOOST boost circuit 206 is too large, it will affect the working efficiency, so the rated voltage of the lithium battery pack 201 is preferably 11.1V, and the minimum voltage of the 11.1V lithium battery pack 201 is 9V, which is boosted to 36V by the BOOST boost circuit 206, and the duty cycle is (1-9 / 36) = 75%, and the BOOST boost circuit 206 is at the best working efficiency.

[0022] Preferably, the lithium battery charging module 202 includes a USB TYPE-C interface and a boost circuit, the input side of the boost circuit is connected to the USB TYPE-C interface, and the output side is connected to the lithium battery pack 201. In this embodiment, the USB TYPE-C interface is used as the charging input of the lithium battery charging module 202, and the input voltage is 5V. The 11.1V lithium battery pack 201 is charged with constant current and constant voltage through the boosting effect of the boost circuit. Users can use mobile phone chargers, computers, power banks, etc. to charge, and the use is convenient. Specifically, there is a red indicator light on the housing 1 during charging, and the red indicator light flashes during the charging process. After charging is completed, the red indicator light goes out.

[0023] Preferably, the input side of the low voltage difference linear regulator 203 is connected to the lithium battery pack 201 , and the output side is connected to the single chip microcomputer module 205 , and is used to reduce the voltage of 11.1V to 5V to supply power to the single chip microcomputer module 205 .

[0024] Preferably, the input side of the BOOST boost circuit 206 is connected to the lithium battery pack 201 , and the output side is connected to the two-bus communication modulator 207 , so as to boost the voltage of 11.1V to 36V to supply power to the two-bus communication modulator 207 .

[0025] Preferably, the output side of the two-bus communication modulator 207 is connected to the emergency lamp 3. In this embodiment, the output terminal of the two-bus communication modulator 207 adopts a spring-type terminal, which does not require the use of tools such as screwdrivers for wiring, and is more convenient and quick to connect the lamp.

[0026] It should be noted that the single-chip microcomputer module 205 has the control functions of power on, power off, power management, two-bus communication, battery voltage detection and automatic shutdown when the voltage is too low. The single-chip microcomputer module 205 is connected to the power management module 204 by signal. When the single-chip microcomputer module 205 receives a shutdown command, it will send a control signal to the power management module 204. The power management module 204 is responsible for the on and off of the lithium battery pack 201. When shutting down, the power is completely cut off to prevent the circuit from consuming power; the single-chip microcomputer module 205 is connected to the two-bus communication modulator 207 by signal. When the single-chip microcomputer module 205 receives a lighting command, it will send a control signal to the two-bus communication modulator 207, which will be modulated and output by the two-bus communication modulator 207 to light up the emergency lamp 3, which is convenient for lighting the emergency lighting in an outdoor environment for demonstration to customers.

[0027] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A portable emergency power supply, comprising a housing (1) and an emergency power supply system (2) arranged in the housing (1), characterized in that: The emergency power supply system (2) comprises a lithium battery pack (201), a lithium battery charging module (202), a low voltage difference linear regulator (203), a power management module (204), a single-chip microcomputer module (205), a BOOST boost circuit (206) and a two-bus communication modulator (207); the lithium battery charging module (202) is electrically connected to the lithium battery pack (201); the lithium battery pack (201) is electrically connected to the single-chip microcomputer module (205) via the low voltage difference linear regulator (203); the lithium battery pack (201) is electrically connected to the two-bus communication modulator (207) via the BOOST boost circuit (206); the single-chip microcomputer module (205) is signal-connected to the power management module (204) to control the on / off of the lithium battery pack (201); and the single-chip microcomputer module (205) is signal-connected to the two-bus communication modulator (207) to control the supply of power to the emergency lighting fixture (3).

2. The portable emergency power supply according to claim 1, characterized in that: The lithium battery pack (201) is composed of three lithium batteries connected in series, and has a rated voltage of 11.1V.

3. The portable emergency power supply according to claim 2, characterized in that: The lithium battery charging module (202) comprises a USB TYPE-C interface and a boost circuit, wherein the input side of the boost circuit is connected to the USB TYPE-C interface, and the output side is connected to the lithium battery pack (201).

4. The portable emergency power supply according to claim 3, characterized in that: The input side of the low voltage difference linear regulator (203) is connected to the lithium battery pack (201), and the output side is connected to the single chip computer module (205), and is used to reduce the voltage of 11.1V to 5V to supply power to the single chip computer module (205).

5. The portable emergency power supply according to claim 4, characterized in that: The input side of the BOOST voltage-boosting circuit (206) is connected to the lithium battery pack (201), and the output side is connected to the two-bus communication modulator (207), and is used to boost the voltage of 11.1V to 36V to supply power to the two-bus communication modulator (207).

6. The portable emergency power supply according to claim 5, characterized in that: The output side of the two-bus communication modulator (207) is connected to the emergency lighting fixture (3).

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