TWM502252U - Portable backup power supply - Google Patents

Description

Portable backup power supply

This creation is about a portable backup power source, especially a portable backup power source that provides DC power for a variety of devices and has high current output capability.

With the improvement of people's living standards, cars, mobile phones, computers, digital cameras, etc. have become essential items for daily life and travel. However, such electrical products are powered by batteries. Once they lose power, they will completely lose their own. The function causes a lot of inconvenience in use. Therefore, for each product, the manufacturer provides a corresponding charger, which can convert 110V mains into a DC power supply of the corresponding voltage, but this charger can only charge for a single product, and cannot store power. Solve the problem of outdoor charging.

A portable power supply device is disclosed in the prior art, which includes an elongated housing having an axially disposed receiving slot, and at least one set of positive and negative conductive contacts are disposed in the housing. a predetermined battery is placed in conduction to form a power supply terminal; a DC-to-DC boost control loop is disposed on a circuit board and placed in the casing to increase the low voltage and current outputted by the battery Pressed to a 5V DC power supply; a USB output socket is axially disposed with the receiving slot and is in the form of a female connector, the opening of the opening is disposed at the front end of the housing, and the inner connecting pins are electrically connected On the board, the 5V DC power supply for the boost control loop output provides the power required for a USB plug connected to it. This mobile power supply has one Multi-purpose, easy to carry and cost-saving features, but it does not have its own charging function, and can only provide 5V DC power supply, and can not completely solve the compatibility of a variety of electronic products.

Another mobile power supply is also disclosed in the market, which is mainly composed of a battery pack, a charging circuit, an MCU microcomputer control circuit and a DC-DC voltage regulating output circuit, wherein the charging circuit is provided with an input terminal connectable to an external power source and The output end of the battery pack is connected to the MCU microcomputer control circuit and the DC-DC voltage regulating output circuit. The MCU microcomputer control circuit is used to control the charging circuit and the DC-DC voltage regulating output circuit, and can utilize the utility power charging. It can also supply or charge a variety of electronic products by replacing different output converters. The mobile power supply has the characteristics of being convenient to carry and use, and also provides various voltage output and self-charging functions, but it does not have a large current output capability and cannot be used as A power source such as a car.

In view of the above problems, the present invention provides a portable backup power source, which has a storage power and a charging function, can provide a plurality of voltage level DC output power, and has a large current output capability, and can be used as a starting power source for a car.

The main purpose of this creation "portable backup power supply" is to provide a lithium iron phosphate or lithium cobalt oxide battery pack, charging circuit, LED drive circuit, multi-channel DC-DC5V buck output circuit, MCU microcomputer control circuit and large a standby power source composed of a current output circuit, wherein the lithium iron phosphate or lithium cobalt oxide battery is connected to an output end of the charging circuit, and is capable of charging the lithium iron phosphate or lithium cobalt oxide battery pack by an external power source; The lithium iron phosphate or lithium cobalt oxide battery pack is simultaneously connected with a multi-channel DC-DC voltage regulating circuit, and each DC-DC voltage regulating circuit is connected with the MCU microcomputer control circuit to output a plurality of voltage level DC power sources, and The lithium iron phosphate or lithium cobalt oxide battery pack is simultaneously connected with a large current output circuit and an LED driving circuit to instantaneously output a large current And provide emergency lighting power.

Another design purpose of the "portable backup power supply" of the present invention is to provide a structure which is light in weight, small in size, durable, has a large instantaneous discharge current, and can be repeatedly charged with a lithium iron phosphate or lithium cobalt oxide battery as a battery pack. To meet the high current requirements of the car start, and the battery pack is connected to a variety of voltage levels of the voltage regulator circuit, through the MCU microcomputer control circuit can meet the outdoor power supply requirements of mobile phones, computers, digital cameras and other equipment.

(1)‧‧‧Long shell

(11)‧‧‧Switch

(12)‧‧‧Power indicator

(13) ‧‧‧Automotive starter power connection埠

(14)‧‧‧External power input

(15)‧‧‧USB output socket

(16)‧‧‧LED lights

(2)‧‧‧Lithium iron phosphate lithium battery pack

(3) ‧‧‧Charging circuit

(4) ‧‧‧LED drive circuit

(5) ‧‧‧DC-DC19V boost output circuit

(6) ‧‧‧12V output circuit

(7) ‧‧‧DC-DC5V step-down output circuit

(8)‧‧‧MCU microcomputer control circuit

(9) ‧‧‧12V high current output circuit

(10) ‧‧‧Protection circuit

The present invention is further described in detail below with reference to the drawings and embodiments.

The first figure is a perspective view of the portable backup power source of the present invention.

The second figure is a schematic flow chart of the portable standby power supply of the present invention.

The third figure is a schematic diagram of a specific circuit division of the portable backup power source of the present invention.

The fourth figure is an enlarged view of 4-1 shown in the third figure.

The fifth figure is an enlarged view of 4-2 shown in the third figure.

The sixth figure is an enlarged view of 4-3 shown in the third figure.

The seventh figure is an enlarged view of 4-4 shown in the third figure.

As shown in the first figure and the second figure, the portable standby power source described in the present invention mainly consists of a long casing (1), lithium iron phosphate or lithium cobalt oxide battery pack (2), and a charging circuit (3). , LED driver circuit (4), DC-DC19V boost output circuit (5), 12V output circuit (6), DC-DC5V step-down output circuit (7), MCU microcomputer control circuit (8), 12V high current output circuit (9), the protection circuit (10) is composed. The long casing (1) is provided with a switch (11) and a power indicator light (12), and the front end of the casing is provided with a vehicle starting power connection port (13), and an external power input port (14). USB output plug a socket (15) and an LED lamp (16); the lithium iron phosphate or lithium cobalt oxide battery pack (2) is placed in the elongated casing (1) and connected to the output end of the charging circuit (3). The charging circuit (3) is connected to the external power input port (14) to be charged to the lithium iron phosphate or lithium cobalt oxide battery pack (2); and the lithium iron phosphate or lithium cobalt oxide battery pack (2) is simultaneously Connected with multiple DC-DC voltage regulator circuits, respectively DC-DC19V boost output circuit (5), 12V output circuit (6), DC-DC5V step-down output circuit (7), each DC-DC voltage regulator The circuit is connected with the MCU microcomputer control circuit (8) and connected to the USB output socket (15). Through the MCU microcomputer control circuit (8), the user can select the corresponding voltage output, and the device such as a mobile phone, a computer or a digital camera is The corresponding USB output socket (15) is connected to achieve outdoor power supply; further, the lithium iron phosphate or lithium cobalt oxide battery pack can be monitored at any time through the power indicator light (8) connected to the MCU microcomputer control circuit (7). (2) The state of the electricity inventory.

Because this creation uses lithium iron phosphate or lithium cobalt oxide battery pack (2) as a component for storing electrical energy, it has the characteristics of light weight, small size, durability, large instantaneous discharge current and recharging, and the lithium iron phosphate or cobalt acid The lithium battery pack (2) is connected to the 12V high-current output circuit (9) and connected to the vehicle start-up power supply port (13), which can output a current of 100-400 amps as a starting power source for the car in an emergency state, to ensure The battery pack is safely charged and discharged, and the lithium iron phosphate or lithium cobalt oxide battery pack (2) is connected with a protection circuit (10) for overload protection. The high current output of the car is directly connected to the two ends of the battery pack without passing through the protection circuit (10). In addition, in order to prevent the emergency start of the car, the external positive and negative clips are short-circuited or reversed to cause the battery to become hot, and the 12V high current The output circuit (9) is connected in series with a fuse of 150A-250A, the output end adopts anti-reverse plug, and the external positive and negative connecting lines adopt different lengths of silicone wire. In addition, in order to meet the needs of outdoor lighting, the lithium iron phosphate or lithium cobalt oxide battery pack (2) is connected to the LED driving circuit (4) and connected to the LED lamp (16) for use as an emergency lighting power source. The specific circuit diagram is as shown in the third to seventh figures. Shower.

(2)‧‧‧Lithium iron phosphate lithium battery pack

(3) ‧‧‧Charging circuit

(4) ‧‧‧LED drive circuit

(5) ‧‧‧DC-DC19V boost output circuit

(6) ‧‧‧12V output circuit

(7) ‧‧‧DC-DC5V step-down output circuit

(8)‧‧‧MCU microcomputer control circuit

(9) ‧‧‧12V high current output circuit

(10) ‧‧‧Protection circuit

(12)‧‧‧Power indicator

(16)‧‧‧LED lights

Claims (7)

A portable standby power supply mainly consists of a long casing, lithium iron phosphate or lithium cobalt oxide battery pack, charging circuit, LED driving circuit, multi-channel DC-DC5V step-down output circuit, MCU microcomputer control circuit and large The current output circuit comprises a switch and a power indicator light; the front end of the housing is provided with a car starting power connection port, an external power input port, a USB output socket and an LED lamp; The lithium iron phosphate or lithium cobalt oxide battery is placed in a long casing, which is connected to the output end of the charging circuit, and the charging circuit is connected to the external power input port to enable the lithium iron phosphate or lithium cobalt oxide battery pack. The charger; and the lithium iron phosphate or lithium cobalt oxide battery pack is simultaneously connected to the multi-channel DC-DC voltage regulating circuit, and each of the DC-DC voltage regulating circuits is connected to the MCU microcomputer control circuit and connected to the USB output socket. In addition, the lithium iron phosphate or lithium cobalt oxide battery pack is simultaneously connected to the high current output circuit and the LED driving circuit, and is respectively connected to the vehicle starting power connection port and the LED lamp. The portable backup power supply according to claim 1, wherein the multi-channel DC-DC voltage regulating circuit comprises a voltage regulating circuit having output voltages of DC19V, DC12V, and DC5V. The portable backup power source according to claim 1, wherein the output voltage of the large current output circuit for starting the automobile is DC12V, and the instantaneous current is 100A-400A. The portable backup power supply according to claim 1, wherein the lithium iron phosphate or lithium cobalt oxide battery pack is connected to a charge and discharge protection circuit. The portable backup power supply according to any one of claims 1 to 4, wherein the MCU microcomputer control circuit is connected with a power indicator light for displaying the power storage amount. The portable backup power supply according to any one of claims 1 to 4, wherein the high current output circuit for starting the vehicle is connected in series with a fuse of 150A-250A. A portable backup power source according to any one of claims 1 to 4, wherein the The input end of the high-current output circuit of the car is an anti-reverse plug, and the external positive and negative connecting wires are made of different lengths of silicone wire.