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A portable vehicle backup power supply

A backup power supply, portable technology, applied in the direction of emergency power supply arrangements, current collectors, electric vehicles, etc., to achieve the effect of long life, prolonging service life and avoiding defects

Active Publication Date: 2016-03-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a portable on-board backup power supply with long service life and small volume, so that the car can be started in an emergency when the original car battery is not working normally.

Method used

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  • A portable vehicle backup power supply
  • A portable vehicle backup power supply
  • A portable vehicle backup power supply

Examples

Experimental program
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Effect test

Embodiment 1

[0040] like figure 1 As shown, this embodiment discloses a portable vehicle-mounted backup power supply, including a lithium battery 2, a switch 3, a super capacitor 4, a first switch 1, a second DC / DC module 5, a voltage sampling link, a controller 9 and a first two exchangers 7;

[0041] The input end of the first exchanger 1 is the charging interface 10 of the backup power supply, which is connected to the charging power supply, and the output end of the first exchanger 1 is connected to the lithium battery 2; the lithium battery 2 is connected to the super capacitor 4 through the switch 3, and the super capacitor 4 is connected to The input end of the second DC / DC module 5 is connected, and the output end of the second DC / DC module is the output interface 6 of the backup power supply, which is connected to the car starting system, and the super capacitor 4 transmits electricity to the car starting system through the second DC / DC module. system; the input end of the second...

Embodiment 2

[0062] This embodiment discloses a portable vehicle-mounted backup power supply, which is different from Embodiment 1 in that the backup power supply of this embodiment is used to start the vehicle starting system of the truck. Since the starting of the truck generally requires a voltage of 24V, such as image 3 As shown, in this embodiment, two 3.7V lithium batteries 2 are used in series.

[0063] The backup power supply of this embodiment is different from that of Embodiment 1 except for the number of batteries used. .

[0064] Since the voltage provided by the two 3.7V lithium batteries 2 exceeds the 5V voltage required by ordinary mobile devices, in this case, in this embodiment, the first voltage connected to the lithium battery 2 for supplying voltage to external devices is used. The second converter 7 is a step-down circuit, such as image 3 shown, the step-down circuit includes a transistor T 31 , diode D 31 , inductance L 31 and capacitor C 31 ; transistor T 31...

Embodiment 3

[0071] This embodiment discloses a portable vehicle-mounted backup power supply. The difference between this embodiment and Embodiment 1 is that the backup power supply of this embodiment is used to start the vehicle starting system of the truck, because the starting of the truck generally requires a voltage of 24V , so if Figure 4 As shown, in this embodiment, three 3.2V lithium batteries 2 are used in series.

[0072] The difference between this embodiment and Embodiment 1 is only in the second exchanger 7 except for the number of batteries used. The circuit composition and connection relationship of other parts are the same as those of Embodiment 1. The second switch 7 in this embodiment includes a voltage regulator chip 7805, the input terminal of the voltage regulator chip 7805 is connected to the positive terminal of the lithium battery, and the output terminal of the voltage regulator chip 7805 serves as the output positive terminal of the second switch 7, Connect to ...

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Abstract

The invention discloses a portable vehicle-mounted stand-by electric source. The portable vehicle-mounted stand-by electric source comprises a lithium battery, a switch, a super capacitor, a first exchanger, a second DC / DC module, a voltage sampling link and a controller. The input end of the first exchanger is connected with a charging power supply, and the output end of the first exchanger is connected with the lithium battery. The lithium battery is connected with the super capacitor through the switch, the super capacitor is connected with the input end of the second DC / DC module, and the output end of the second DC / DC module serves as an output interface of the stand-by electric source and is connected with a car starting system. The controller is connected with the first exchanger and the second DC / DC module and is further connected with the output end of the second DC / DC module through detection of the voltage sampling link. The lithium battery and the super capacitor are used as electric quantity storage units, and due to the fact that the super capacitor long in service life and high in power density and the lithium battery small in size are adopted in the stand-by electric source, the stand-by electric source has the advantages of being long in service life and small in size.

Description

technical field [0001] The invention relates to the field of DC power supplies, in particular to a portable vehicle-mounted backup power supply. Background technique [0002] With the improvement of my country's economic level, automobiles have entered ordinary families as a daily means of transportation. In the process of using the car, it is often difficult or even impossible to start the car due to the lack of power of the battery or the cold weather in winter, which brings great trouble to people. Portable on-board backup power supplies can provide starting power for the car, and in an emergency, the backup power supply can be connected to the car's starting system to start the car. In addition, the backup power supply can also supply power for mobile devices, solving the problem that mobile devices cannot be charged in time due to long-term outdoor driving. At present, most of the portable car backup power supplies on the market are powered by lead-acid batteries. Whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J9/00
CPCY02B70/30Y04S20/20
Inventor 罗玉涛
Owner SOUTH CHINA UNIV OF TECH
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