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Buck-boost adjustable quick charger

A fast charging, buck-boost technology, used in current collectors, electric vehicles, electrical components, etc., can solve the problem of unable to meet the charging voltage, no boost, buck adjustable chargers, etc., to avoid a lot of consumption, control Convenience and the effect of improving utilization

Inactive Publication Date: 2009-11-04
JIANGSU POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defects of the adjustable output voltage chargers on the market are: some are step-up chargers whose output adjustable voltage is higher than the input voltage, and some are step-down chargers whose output adjustable voltage is lower than the input voltage. An adjustable charger that integrates step-up and step-down, cannot meet the requirements of various charging voltages

Method used

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  • Buck-boost adjustable quick charger
  • Buck-boost adjustable quick charger
  • Buck-boost adjustable quick charger

Examples

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Embodiment Construction

[0014] Such as figure 1 As shown, the charger includes a power supply voltage detection circuit 1, a power conversion circuit 2, a power switch drive module 3, an adjustable buck-boost control circuit 4, a voltage and current detection circuit 5, an ambient temperature detection circuit 6, and a charging mode setting module 7 , microprocessor 8 and charging state display module 9. Wherein, the 12V vehicle power supply is respectively connected to the power supply voltage detection circuit 1, the power conversion circuit 2, the power switch drive module 3 and the voltage-boost adjustable control circuit 4. The output of the power conversion circuit 2 is connected to the power switch driving module 3 . The microprocessor 8 is respectively externally connected to the output of the power supply voltage detection circuit 1, the output of the charging mode setting module 7, the output of the voltage and current detection circuit 5, the input of the charging state display module 9, ...

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Abstract

The invention discloses a buck-boost adjustable quick charger under a 12V direct-current onboard power supply. The 12V onboard power supply is connected with a power supply voltage detection circuit, a power supply conversion circuit, a power switch drive module and a buck-boost adjustable control circuit respectively; an output of the power supply conversion circuit is connected with the power switch drive module; a microprocessor is externally connected with an output of the power supply voltage detection circuit, an output of a charge mode setting module, an output of a voltage-current detection circuit and an input of the power switch drive module respectively; and an output of the power switch drive module is connected with the buck-boost adjustable control circuit, a battery and an input of the voltage-current detection circuit in turn. The quick charger integrates the buck-boost functions, automatically converts buck-boost modes under the condition of the 12V fixed input power supply and adjusts the charge current to realize stage charge for the batteries of different voltage requirements, has simple circuits, is convenient to control, and meets the charge requirements of various batteries of 0 to 20V so as to solve the charge problem in self-driving travel of people.

Description

technical field [0001] The invention relates to a fast charger, in particular to a fast charger capable of adjusting the buck-boost voltage under the 12V DC vehicle-mounted power supply. Background technique [0002] In traveling by car, there is a problem of charging various batteries. First of all, there is no external power supply on the self-driving car, and the commonly used charger that needs to be connected to 220V mains power at the input end cannot be used, so it is impossible to use the vehicle-mounted 12V power supply to realize the charger for charging various batteries. Secondly, the specification requirements of various batteries are different. Some require a charging voltage higher than the 12V vehicle power supply, while others require a charging voltage lower than 12V, and some require both charging voltages. The defects of the adjustable output voltage chargers on the market are: some are step-up chargers whose output adjustable voltage is higher than the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 蒋益兴李菊柳军宁唐大美
Owner JIANGSU POLYTECHNIC UNIVERSITY
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