Direct current varied-frequency air conditioner with solar battery

A technology of solar cells and DC frequency conversion, which is applied in collectors, air-conditioning systems, battery circuit devices, etc., can solve problems such as increasing power loss, and achieve the effects of improving efficiency, reducing environmental impact, and high energy efficiency ratio

Active Publication Date: 2010-12-15
MIDEA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air conditioner power supply circuit in this way increases the power loss due to the existence of the AC-DC rectifier 8

Method used

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  • Direct current varied-frequency air conditioner with solar battery
  • Direct current varied-frequency air conditioner with solar battery
  • Direct current varied-frequency air conditioner with solar battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see image 3 , is a schematic block diagram of Embodiment 1 of the present invention. A DC inverter air conditioner with solar cells includes a solar cell 1 , a solar power supply controller 2 and a DC inverter air conditioner 6 .

[0036] The solar power supply controller 2 is connected between the solar battery 1 and the first power interface of the DC inverter air conditioner 6 . The mains grid 5 is connected to the second power interface of the DC inverter air conditioner 6 .

[0037] The complete set of controllers of the DC inverter air conditioner 6 borrows the principle of the common full DC inverter air conditioner controller, including the indoor circuit 20 of the DC inverter air conditioner, the outdoor circuit 21 of the DC inverter air conditioner, the AC-DC rectifier 8 and the EMC circuit 23. For connection see image 3 .

[0038] The indoor circuit 20 of the DC inverter air conditioner includes an indoor main control MCU, a display unit, a temperature ...

Embodiment 2

[0048] see Figure 8 , is a functional block diagram of the battery system of the present invention. In the second embodiment, the user can store the energy generated by the solar cell 1 in the storage battery 10 when the DC inverter air conditioner 6 is not running. During the operation of the DC inverter air conditioner 6 , if the electricity generated by the solar battery 1 is not enough to fully provide the operation of the DC inverter air conditioner 6 , the battery 10 can be used to increase the electricity supply for the operation of the DC inverter air conditioner 6 .

[0049] The second embodiment includes a solar battery 1 , a DC inverter air conditioner 6 , a solar power supply controller 2 connected between the solar battery 1 and the DC inverter air conditioner 6 , a battery charge and discharge management unit 31 , a battery 10 and a mains grid 5 . See the specific link Figure 5 : The connection schematic diagram of solar battery 1, DC inverter air conditioner...

Embodiment 3

[0054] see Figure 9 , is a schematic block diagram of the present invention that can supply excess power to the mains when the DC inverter air conditioner 6 is not in operation. The third embodiment is to add a high-voltage DC-50 or 60Hz high-voltage AC converter 32 on the basis of the above-mentioned embodiment two. When the DC inverter air conditioner 6 is not running, the excess power can be provided to the mains grid 5 to realize power generation. machine function. The high-voltage DC-50 or 60Hz high-voltage AC converter 32 here is a known high-voltage DC-high-voltage AC converter circuit, which is connected between the DC-high-voltage DC inverter 3 inside the solar power supply controller 2 and the mains grid 5 . The DC inverter air conditioner circuit 7 includes an indoor circuit of the DC inverter air conditioner, an outdoor circuit of the DC inverter air conditioner, an AC-DC rectifier and an EMC circuit.

[0055] See the first embodiment for the rest of the undesc...

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Abstract

The invention discloses a direct current varied-frequency air conditioner with a solar battery, comprising a solar battery, a direct current varied-frequency air conditioner, a solar power supply controller and a commercial power grid, wherein the solar power supply controller is connected between the solar battery and the direct current varied-frequency air conditioner; the varied-frequency air conditioner comprises an AC-DC rectifier and a AC varied-frequency air conditioner circuit; and the solar power supply controller comprises a DC-high-voltage DC inverter and a solar maximum output power point track (MPPT) control unit which is used for monitoring the output power of the solar battery, controlling the DC-high-voltage DC inverter to convert low-voltage direct current power output by the solar battery into high-voltage direct current and directly supplying power to a direct current varied-frequency air conditioner circuit. The commercial power grid is connected in parallel with the solar power supply controller through the AC-DC rectifier and directly supplies power to the direct current varied-frequency air conditioner circuit. The invention has the characteristics of low manufacturing cost, energy saving, environmental protection, reduction on the influence of environment, flexible operation, high energy-efficiency ratio and wide application range.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a direct current inverter air conditioner with solar cells. Background technique [0002] Existing solar air conditioners driven by solar cells, see attached figure 1 , the solar battery 1 is managed by the solar power supply controller 9, the battery 10 and the DC-high voltage DC inverter 11 are powered, and then converted into the same AC voltage as the commercial power through the high-voltage DC-50 or 60Hz high-voltage AC converter 13 . At the same time, the solar power supply controller 9 detects whether the electric quantity of the solar cell 1 and the storage battery 10 is sufficient, and controls the electronic switch 14. DC frequency conversion air conditioner 15 supplies power, otherwise, switch to high voltage DC-50 or 60Hz high voltage AC converter 13 to supply power to DC frequency conversion air conditioner 15. [0003] This type of solar air conditioner has the following di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/04H02J7/35H02N6/00F24F11/00
CPCY02B10/72H02J7/35Y02E10/58F24F2005/0067Y02E10/566H02J9/061Y02B10/70Y02B70/30Y02E10/56Y02P90/50Y04S20/20
Inventor 李洪涛谢志君许蔡辉白东培彭良
Owner MIDEA GRP CO LTD
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