CN112118652A

CN112118652A - Driving power supply of LED lamp

Info

Publication number: CN112118652A
Application number: CN202011085809.0A
Authority: CN
Inventors: 张中琦
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2020-12-22

Abstract

The invention discloses a driving power supply of an LED lamp, which comprises an AC/DC module, a single chip microcomputer, a PWM dimming module, a boosting module, an LED lamp group, a charging management module, a battery and a battery valve. The LED lamp solves the problem of sudden change of the ambient brightness when the LED lamp is switched on and switched off through the connection and the arrangement of the singlechip, the battery, the circuit and the like, realizes the effects of slowly turning on the LED lamp when the LED lamp is switched on and slowly turning off the LED lamp when the LED lamp is switched off, ensures that the process of adapting human eyes to the change of the brightness is more comfortable, protects the eyes from being damaged due to the sudden change of the ambient brightness, and has the characteristics of convenience in use, simple structure, comfort in eye protection and the.

Description

Driving power supply of LED lamp

Technical Field

The invention relates to the technical field of LED lamps, in particular to a driving power supply of an LED lamp.

Background

The driving power supply of the LED lamp in the current market is mainly controlled by a switch to light on and off the lamp, and the LED lamp is instantly lighted and reaches the set brightness when the switch is turned on; and when the switch is turned off, the LED lamp is instantly extinguished. Since the optic nerve of the human eye adjusts the sensitivity, i.e., the brightness adaptation, accordingly as the intensity of light changes, a process is required. Especially, when the light is suddenly turned on in a completely dark environment at night, optic nerves are highly sensitive after a dark adaptation process for a long time, and direct and sudden entering of the optic nerves under strong light can cause eye injury and discomfort. Because the initial light efficiency of the LED lamp with the same power is obviously higher than that of an incandescent lamp and an energy-saving lamp, the existing LED lamp hardly has adaptation time for human eyes when the lamp is turned on in the dark, and the human eyes do not have an adaptation process, so that people feel that the lamp light is particularly dazzling. Similarly, when the lamp is turned off and is suddenly switched to a dark environment, the brightness is instantly and greatly reduced, so that the human eyes cannot see, and the problems of mental panic, furniture collision and the like are caused.

In addition, in some existing LED lamp power supplies, only the power supply output is turned off after the lamp is turned off, the internal circuit still works in a standby state, electric energy is continuously consumed, the circuit works for a long time, the service life of the circuit is shortened, and fire hazard can be caused.

Disclosure of Invention

The present invention is directed to a driving power supply for an LED lamp, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a driving power supply of an LED lamp comprises an AC/DC module, a single chip microcomputer, a PWM dimming module, a boosting module and an LED lamp set;

one end of the AC/DC module is connected with an AC power supply through a wire, and the other end of the AC/DC module supplies power to the LED lamp bank and the single chip microcomputer through the boosting module; the single chip microcomputer is connected with the boosting module through the PWM dimming module, outputs a signal instruction to the PWM dimming module, and controls the boosting module to drive the LED lamp set through the PWM dimming module;

when the LED lamp is turned on, the single chip microcomputer detects direct-current voltage provided by the AC/DC module, sends a starting signal to the PWM dimming module, the PWM dimming module gradually increases the duty ratio, and the boosting module is controlled to enable the LED lamp to be turned on slowly.

Preferably, the driving power supply of the LED lamp further comprises a charging management module, a battery, and a battery valve; the AC/DC module charges a battery through the charging management module; the battery supplies power to the boosting module and the single chip microcomputer through the current valve;

when the lamp is turned off, the AC/DC module does not provide direct current voltage for the single chip microcomputer any more, the single chip microcomputer detects that the voltage is reduced, a battery valve is started, and the battery supplies power to the boosting module and the single chip microcomputer through the battery valve; the single chip microcomputer outputs signals to the PWM dimming module, the PWM dimming module gradually reduces the duty ratio, and the boosting module is controlled to enable the LED lamp to slowly fade;

after the lamp is turned on, the power supply slowly charges the battery under the action of the charging management module, and the charging is automatically stopped after the battery is fully charged.

Preferably, a circuit that a diode is matched with the MOS transistor is built in the current valve, so that the current flows out in a single direction from the battery to the voltage boosting module.

Preferably, after the LED lamp is turned off, the single chip outputs a closing control signal to the battery valve, the battery valve is closed, the power supply of the whole circuit is cut off, and the battery is kept in an idle state. Therefore, the storage time of the electric quantity of the battery can be greatly prolonged, namely, the battery can continuously keep a working state without being charged for 3 months. Here the power off is a true power off, completely without connection to the AC220V power supply.

Preferably, the driving power supply of the LED lamp further comprises a battery temperature detection management module for detecting a battery temperature and performing temperature management on the battery, the battery temperature detection management module is connected to the battery and connected to the single chip microcomputer, and transmits a battery temperature signal to the single chip microcomputer after detecting the battery temperature signal, when the battery temperature is too high, the single chip microcomputer sends a signal to the charging management module, and the charging management module disconnects a path between the AC/DC module and the battery.

The output end of the voltage boosting circuit is prevented from causing irreversible damage to the whole circuit after short circuit caused by circuit damage, aging, mouse biting and the like. Preferably, an open-circuit protection module and a short-circuit protection module are arranged between the boosting module and the LED lamp bank.

Compared with the prior art, the invention has the beneficial effects that: the driving power supply of the LED lamp solves the problem of sudden change of the ambient brightness when the LED lamp is switched on and switched off through the connection arrangement of the singlechip, the battery, the circuit and the like, realizes the effects of slowly turning on the LED lamp when the LED lamp is switched on and slowly turning off the LED lamp when the LED lamp is switched off, ensures that the process of adapting to the change of the brightness of human eyes is more comfortable, protects the eyes from being damaged due to the sudden change of the ambient brightness, and has the characteristics of convenience in use, simple structure, comfort in eye protection and the like.

Drawings

FIG. 1 is a circuit configuration diagram of an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, a driving power supply of an LED lamp includes an AC/DC module, a single chip, a PWM dimming module, a boosting module, and an LED lamp set;

The driving power supply of the LED lamp also comprises a charging management module, a battery and a battery valve; the AC/DC module charges a battery through the charging management module; the battery supplies power to the boosting module and the single chip microcomputer through the current valve;

The current valve is internally provided with a circuit with a diode matched with an MOS (metal oxide semiconductor) tube, so that the current flows out from the battery to the boosting module in a single direction.

When the LED lamp is in the dark, the single chip microcomputer outputs a closing control signal to the battery valve, the battery valve is closed, the power supply of the whole circuit is cut off, and the battery is kept in an idle state. Therefore, the storage time of the electric quantity of the battery can be greatly prolonged, namely, the battery can continuously keep a working state without being charged for 3 months. Here the power-off of the power supply is a true power-off, completely without connection to the AC220V power supply.

The driving power supply of the LED lamp further comprises a battery temperature detection management module used for detecting the temperature of the battery and managing the temperature of the battery, the battery temperature detection management module is connected with the battery and is in data connection with the single chip microcomputer, the battery temperature signal is transmitted to the single chip microcomputer after being detected, when the temperature of the battery is too high, the single chip microcomputer sends a signal to the charging management module, and the charging management module disconnects a passage between the AC/DC module and the battery.

The AC power supply is AC220V alternating current, and the AD/DC module converts the alternating current into DC 12V.

And an open-circuit protection module and a short-circuit protection module are arranged between the boosting module and the LED lamp bank.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A driving power supply of an LED lamp is characterized by comprising an AC/DC module, a single chip microcomputer, a PWM dimming module, a boosting module and an LED lamp set;

2. The LED lamp driving power supply according to claim 1, further comprising a charging management module, a battery valve; the AC/DC module charges a battery through the charging management module; the battery supplies power to the boosting module and the single chip microcomputer through the current valve;

3. The driving power supply of the LED lamp according to claim 2, wherein a diode and a MOS transistor cooperating with each other are built in the current valve, so that the current flows in a single direction from the battery to the voltage boosting module.

4. The LED lamp driving power supply according to claim 3, wherein after the LED lamp is dimmed, the single chip microcomputer outputs a control signal to close the battery valve, the battery valve is closed, the power supply of the whole circuit is cut off, and the battery is kept in an idle state.

5. The LED lamp driving power supply according to claim 4, further comprising a battery temperature detection management module for detecting a battery temperature and performing temperature management on the battery, wherein the battery temperature detection management module is connected to the battery and the single chip microcomputer, detects a battery temperature signal and transmits the detected battery temperature signal to the single chip microcomputer, and when the battery temperature is too high, the single chip microcomputer sends a signal to the charging management module, and the charging management module disconnects a path between the AC/DC module and the battery.

6. The LED lamp driving power supply according to claim 5, wherein the AC power supply is AC220V AC, and the AD/DC module converts the AC power supply into DC 12V.

7. The LED lamp driving power supply according to claim 5, wherein an open-circuit protection module and a short-circuit protection module are arranged between the boosting module and the LED lamp set.