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High-efficiency solar LED lamp capable of automatically memorizing shifts

A technology of LED lamps and automatic memory, which is applied to the layout of electric lamp circuits, lighting devices, light sources, etc., can solve the problems of low efficiency of solar lamps and achieve the effects of high circuit precision, high efficiency, and high precision of constant current

Inactive Publication Date: 2013-12-04
ZHUHAI DUOMINGLI NEW ENERGY
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Problems solved by technology

[0003] Aiming at the disadvantages of low efficiency of solar lamps and the current situation that comparative resistance circuits are mostly used for constant current, the present invention provides step-by-step control of LED constant current control through software pulse width modulation (PWM), which not only simplifies the circuit, but also realizes high efficiency and low Bracketed constant current mode for cost

Method used

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  • High-efficiency solar LED lamp capable of automatically memorizing shifts
  • High-efficiency solar LED lamp capable of automatically memorizing shifts

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Embodiment Construction

[0037] refer to figure 1 , a high-efficiency solar LED lamp with automatic gear memory of the present invention, the solar LED lamp includes:

[0038] Solar panel power supply circuit 1, used to charge the rechargeable battery pack;

[0039] The charging current limiting and voltage limiting control circuit 2 of the rechargeable battery pack is used to control the charging current and charging voltage of the rechargeable battery pack to prevent damage to the battery pack caused by excessive voltage and / or current;

[0040] The rechargeable battery pack over-discharge protection circuit 3 is used to prevent deep over-discharge of the battery pack;

[0041] LED constant current control and load circuit 4, used to control output stable current to the load circuit;

[0042] The binning memory circuit 5 is used to save gear position data and PWM modulation data;

[0043] The solar panel light control circuit 6 is used to instruct the MCU control circuit to output a control signa...

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PUM

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Abstract

The invention discloses a high-efficiency solar LED lamp capable of automatically memorizing shifts. The high-efficiency solar LED lamp capable of automatically memorizing shifts is composed of a solar panel power supply circuit, a charging and current and voltage limiting circuit of a chargeable battery pack, an over-discharging protection circuit of the chargeable battery pack, an LED constant-current control and load circuit, a shift dividing memory circuit, a solar panel light control circuit and an MCU control circuit. According to the LED lamp, the shift dividing memory circuit is used for memorizing different shifts and PWM modulation data and a PWM manner is used for controlling the luminance of the LED lamp. The high-efficiency solar LED lamp has the advantages of being simple in circuit, easy to control, high in constant-current precision, high in overall efficiency and the like.

Description

technical field [0001] The invention relates to an LED lamp, in particular to a high-efficiency LED lamp which adopts PWM to control four gears of constant current, automatically memorizes gears and automatically times. Background technique [0002] In the solar LED lighting industry, efficiency is very important for solar LED lighting. At present, the efficiency of most LED lamps is lower than 85%, and the low efficiency of energy utilization is a bottleneck. In addition, multi-level constant current control is basically realized by using step-by-step current-limiting resistors, which has defects such as complex circuits and low efficiency. Contents of the invention [0003] Aiming at the disadvantages of low efficiency of solar lamps and the current situation that comparative resistance circuits are mostly used for constant current, the present invention provides step-by-step control of LED constant current control through software pulse width modulation (PWM), which no...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 张烜
Owner ZHUHAI DUOMINGLI NEW ENERGY
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