CN204300926U - Based on the LED flexible light module that the heating installation heat energy temperature difference is powered - Google Patents

Abstract

The LED flexible lighting module based on the thermal energy temperature difference power supply of the heating device disclosed by the utility model includes a thermoelectric power generation module, a bootstrap boost circuit and an LED module. The thermoelectric power generation module is equipped with a thermoelectric power generation sheet and a radiator. The power generation sheet generates voltage through the temperature difference and then boosts the voltage through the bootstrap booster circuit to supply power to the LED lighting module. The thermoelectric power generation module, the bootstrap booster circuit and the LED module are integrated into a thermoelectric power generation lighting module. A flexible heat-conducting substrate is fitted with a thermoelectric power generation sheet to form a flexible lighting module. Using the flexible heat-conductive substrate as the heat-conducting base of the thermoelectric power generation module can increase its applicability on non-planar heating devices and effectively improve thermal conductivity. Moreover, a flexible lighting module can be composed of multiple thermoelectric power generation modules to supply power to the LED array, and the utilization rate of power generation is more efficient. It can be used as an emergency lighting tool or to supply power to other low-power electrical devices.

Description

LED flexible lighting module based on heating device thermal energy temperature difference power supply

technical field

The utility model relates to a lighting device that utilizes temperature difference to generate electricity, in particular to an LED flexible lighting module that supplies power based on the thermal energy temperature difference of a heating device.

Background technique

With the sharp increase in demand for electricity, people have greatly increased the amount of industrial power generation, and the global pollution caused by industrial power generation is also becoming more and more serious. In China, this phenomenon is particularly true, and certain appropriate measures must be taken to resolve the current crisis. If the "waste" in life or industrial production can be reused for power generation, it can turn waste into treasure, achieve energy saving and emission reduction, and benefit mankind.

At present, the surface temperature of heating devices in northern residents’ homes is 80 to 85°C, the surface temperature of high-pressure steam heating devices exceeds 90°C, and even reaches 100°C, and the indoor temperature is generally 19 to 25°C. The temperature difference is at least 55°C, which is enough for thermoelectric power generation, and the use of this thermoelectric power generation is enough for low-power lighting. Since the surface of the heating device is mostly non-planar, it is difficult to collect heat with the existing planar thermoelectric generator. The applicability is low, the power generation efficiency is low, and the purpose of energy recovery cannot be achieved.

Utility model content

In order to solve the above-mentioned technical problems, the LED flexible lighting module provided by the utility model based on the thermal energy temperature difference power supply of the heating device increases its applicability on the non-planar heating device and improves the power generation efficiency.

In order to achieve the above object, the technical solution adopted in the utility model is:

The LED flexible lighting module based on the temperature difference power supply of the thermal energy of the heating device includes a thermoelectric power generation module, a bootstrap boost circuit and an LED module. The thermoelectric power generation module is equipped with a thermoelectric power generation sheet and a radiator. The voltage is boosted by the bootstrap booster circuit to supply power to the LED lighting module. The thermoelectric power generation module, the bootstrap booster circuit and the LED module are integrated into a thermoelectric power generation lighting module. The thermoelectric power generation lighting module is provided with a flexible heat-conducting lining The bottom is attached to the thermoelectric generation sheet to form a flexible lighting module, and the LED flexible lighting device contains at least one flexible lighting module.

In order to further improve the lighting effect, the flexible lighting modules are connected in series or in parallel to form a flexible lighting module, so as to generate more electric energy for power supply, and to recycle energy more efficiently.

Preferably, the LED flexible lighting device is also provided with a switch device and a USB interface, the switch device is located between the bootstrap boost circuit and the LED module, and can supply power to other low-power DC power devices through the USB interface, Such as USB small desk lamp, USB small fan, etc.

Preferably, the flexible thermal conductive substrate includes a flexible graphite sheet and a copper foil sheet, the flexible thermal conductive substrate includes a flexible graphite sheet and a copper foil sheet, and the flexible graphite sheet is placed between the thermoelectric generation sheet and the copper foil sheet.

Preferably, the flexible heat-conducting substrate is further provided with a heat-insulating protection sheet, and the heat-insulation protection sheet surrounds and covers the exposed surface of the side where the copper foil sheet is attached to the flexible graphite sheet.

Preferably, a flexible graphite sheet is provided between the thermoelectric sheet and the heat sink.

Preferably, the bootstrap boost circuit is a bootstrap boost circuit chip.

Preferably, a heat insulating sheet is provided between the LED module and the heat sink in the differential power generation module.

The beneficial effects of the utility model: use the temperature difference between the surface temperature of the heating device and the temperature of the air to generate electricity, and use the flexible heat-conducting substrate as the heat-conducting base of the thermoelectric power generation module, which can increase its applicability on non-planar heating devices and effectively improve heat conduction High efficiency, and a flexible lighting module can be composed of multiple temperature difference power generation modules to supply power to the LED array.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.

Fig. 1 is a schematic diagram of the principle of the LED flexible lighting device of the present invention;

Fig. 2 is a structural schematic diagram of the flexible heat-conducting substrate and the thermoelectric power generation module in the utility model.

Detailed ways

Referring to Fig. 1, the LED flexible lighting module based on the temperature difference power supply of the heat energy of the heating device of the present invention includes a thermoelectric power generation module 2, a bootstrap boost circuit 4 and an LED module 1, and the thermoelectric power generation module 2 is provided with a thermoelectric power generation chip 21 and radiator 22, the thermoelectric power generation sheet 21 generates voltage through the temperature difference and then boosts the voltage through the bootstrap booster circuit 4 to supply power to the LED lighting module. The thermoelectric power generation module 2, the bootstrap booster circuit 4 and the LED module 1 Integrated into a thermoelectric power generation lighting module, the thermoelectric power generation lighting module is provided with a flexible heat-conducting substrate 3 and a thermoelectric power generation sheet 21 to form a flexible lighting module. The LED flexible lighting device contains at least one flexible lighting module. The flexible lighting modules are connected in series or in parallel to form a flexible lighting module, which improves the utilization rate of heat energy, generates more electric power for power supply, and more efficiently recycles energy. The LED flexible lighting device uses the temperature difference between the room temperature and the heating device to generate electricity. Although the theoretical value of the conversion efficiency is generally not more than 4%, the converted power is enough to light up the low-power white LED, so that it can be used when the light demand is not large. When used for lighting, it can also achieve the purpose of energy recovery.

The above-mentioned LED flexible lighting device is also provided with a switch device and a USB interface. The switch device is located between the bootstrap boost circuit 4 and the LED module 1, and can supply power to other low-power DC power devices through the USB interface, such as USB small table lamp, USB small fan, etc., easy to use and practical.

Referring to Fig. 2, described flexible heat conduction substrate 3 comprises flexible graphite sheet 32 and copper foil sheet 31, and described flexible heat conduction substrate 3 comprises flexible graphite sheet 32 and copper foil sheet 31, and described flexible graphite sheet 32 is placed Between the thermoelectric power generation sheet 21 and the copper foil sheet 31 . The flexible heat-conducting substrate 3 is also provided with a heat-insulating protection sheet 33, and the heat-insulating protection sheet 33 surrounds and covers the exposed surface of the side where the copper foil sheet 31 and the flexible graphite sheet 32 are attached to prevent heat loss . A flexible graphite sheet 32 is also provided between the thermoelectric generation sheet 21 and the radiator 22 to enhance thermal conductivity.

Preferably, a heat insulating sheet 5 is provided between the LED module 1 and the radiator 22 in the differential power generation module, and the heat insulating sheet 5 can prevent heat from being directed to the LED module 1, so as to avoid the increase of the operating temperature of the LED module 1 and reduce the service life. .

When in use, place the flexible lighting module on the heating device, close the switch device, and use the temperature difference between the surface temperature of the heating device and the air temperature to generate a temperature difference of 30 to 50°C on both sides of the thermoelectric power generation sheet 21, thereby forming a DC voltage. Then, the DC voltage is raised through the bootstrap boost circuit 4, which can supply the LED module 1 with electricity to emit light, and can also supply power to other low-power electrical devices. The bootstrap boost circuit 4 is a bootstrap boost circuit chip. , small size, easy assembly, good boost stability. Using the flexible heat-conducting substrate 3 as the heat-conducting base of the thermoelectric power generation module 2 can increase its applicability to non-planar heating devices, effectively improve thermal conductivity, and is environmentally friendly and energy-saving.

The above is only a preferred embodiment of the utility model, and the utility model is not limited to the shape and structure mentioned in the above embodiment, as long as it achieves the technical effect of the utility model by the same means, it should belong to Protection scope of the present utility model.

Claims (8)

1. The LED flexible lighting module based on the temperature difference power supply of the heat energy of the heating device, including a thermoelectric power generation module, a boost circuit and an LED module. The voltage is boosted by the bootstrap booster circuit to supply power to the LED lighting module. It is characterized in that: the thermoelectric power generation module, the bootstrap booster circuit and the LED module are integrated into a thermoelectric power generation lighting module, and the thermoelectric power generation lighting module is equipped with A flexible heat-conducting substrate is attached to a thermoelectric power generation sheet to form a flexible lighting module, and the LED flexible lighting device contains at least one flexible lighting module. 2. The LED flexible lighting module for power supply based on the thermal energy temperature difference of the heating device according to claim 1, characterized in that: the flexible lighting modules are connected in series or in parallel to form a flexible lighting module. 3. According to claim 1 or 2, the LED flexible lighting module that supplies power based on the thermal energy temperature difference of the heating device, is characterized in that: the LED flexible lighting device is also provided with a switch device and a USB interface, and the switch device is located at Between the bootstrap boost circuit and the LED module. 4. The LED flexible lighting module based on heating device thermal energy temperature difference power supply according to claim 1, characterized in that: the flexible heat-conducting substrate includes a flexible graphite sheet and a copper foil sheet, and the flexible graphite sheet is placed in a temperature difference power generation between the sheet and the copper foil. 5. The LED flexible lighting module for power supply based on the thermal energy temperature difference of the heating device according to claim 4, characterized in that: the flexible heat-conducting substrate is also provided with a heat-insulating protection sheet, and the heat-insulation protection sheet surrounds and covers The exposed surface of the side where the copper foil is bonded to the flexible graphite sheet. 6. The LED flexible lighting module for power supply based on temperature difference of heating device heat energy according to claim 4, characterized in that: a flexible graphite sheet is arranged between the thermoelectric power generation sheet and the radiator. 7. The LED flexible lighting module that supplies power based on the thermal energy temperature difference of the heating device according to claim 1, wherein the bootstrap boost circuit is a bootstrap boost circuit chip. 8. The LED flexible lighting module that supplies power based on the thermal energy temperature difference of the heating device according to claim 1, wherein a heat insulating sheet is provided between the LED module and the radiator in the differential power generation module.