AC / DC dual power supply complementary type air conditioning unit
Through the complementary AC/DC air-conditioning unit, the complementary power supply of solar energy and mains power is solved, and the problem of solar power generation system not being able to continuously supply power on cloudy days or at night is achieved, and all-weather power supply is achieved and energy utilization is improved.
Patent Information
- Application Number
- CN202422297540.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing solar power generation system cannot continuously supply power on cloudy or at night, resulting in the equipment being unable to operate all day and the battery storage cost is high, which limits its promotion and application.
It adopts AC/DC dual power supply complementary air conditioning units, which use solar energy to generate power during the day and power supply at night or cloudy days. It uses DC-DC MPPT smart controller and IGBT control to ensure that DC power supply is preferred, realize dual power supply complementary power supply, and improve energy utilization.
It realizes all-weather power supply, reduces battery storage costs, improves energy utilization, and is suitable for places with more electricity during the day such as shops and schools.
Smart Images
Figure CN223090769U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an energy complementary application device, in particular to an AC / DC dual-power complementary air conditioner unit. Background Technique
[0002] Solar energy is currently recognized as a clean energy source. Both domestic and international use solar power generation on a large scale to replace part of oil and coal. However, due to the limitations of solar energy, it cannot generate electricity on cloudy days or at night, seriously affecting the all-weather operation of equipment. Moreover, if the electric energy generated by solar power is stored in a battery and used at night or on cloudy days, the battery cost is relatively high, seriously affecting its popularization and application.
[0003] The utility model provides an AC / DC dual-power complementary air conditioner unit, which uses solar power generation to supply the air conditioner unit during the day and uses commercial power supply at night or on cloudy days, eliminating the battery pack, with lower cost and being easy to promote. It can meet the needs of customers with more daytime electricity consumption such as stores and schools, and reduce the consumption of commercial power. Content of the Utility Model
[0004] The main purpose of the utility model is to provide an AC / DC dual-power complementary air conditioner unit to effectively solve the problems raised in the background technique.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions: an AC / DC dual-power complementary air conditioner unit, including an air conditioner unit and a power supply system; the air conditioner unit includes a DC variable-frequency compressor, an evaporator, a condenser, an electronic expansion valve, and a DC fan. The output end of the DC variable-frequency compressor is connected to the evaporator through a pipeline, the evaporator is connected to the electronic expansion valve through a pipeline, the electronic expansion valve is connected to the condenser through a pipeline, and the condenser is connected to the input end of the DC variable-frequency compressor through a pipeline. A DC fan is installed on the condenser to dissipate cold air into the air.
[0006] The power supply system includes commercial power supply and clean energy power supply. The commercial power enters the energy convergence module after AC-DC rectification. The clean energy includes the electric energy generated by wind energy, electric energy, and tidal energy power generation. After being processed by a DC-DC MPPT intelligent controller, it enters the energy convergence module. The energy convergence module is electrically connected to the IPM drive module and the DC fan control circuit module respectively. The IPM drive module, the DC fan control circuit module, and the DC water pump control circuit module are electrically connected to the DC variable-frequency compressor and the DC variable-frequency fan respectively to drive the DC variable-frequency compressor and the DC variable-frequency fan of the air conditioner unit to operate.
[0007] Preferably, the air conditioner unit can operate in reverse for heating and heating supply.
[0008] Preferably, the energy convergence module is composed of multiple capacitors.
[0009] Preferably, the power supply system works as follows: the current supplied by the clean energy is first processed by a DC-DC MPPT intelligent controller. The DC-DC MPPT controller circuit includes capacitors C1, C2, C3, and C4 that are first connected in series and then in parallel. The positive poles of the parallel combination of C1 and C2 are connected to the positive poles of the parallel combination of C3 and C4 through an inductor L1. The negative poles of C1, C2, C3, and C4 are connected. The positive and negative poles of C4 are respectively connected to a DC power collection module. The DC power collection module is electrically connected to an energy convergence module. The energy convergence module is respectively electrically connected to two IPM drive modules and a power supply circuit. The two IPM drive modules are respectively connected to a DC inverter compressor and a DC inverter fan. The power supply circuit is connected to an MCU module. The current supplied by the clean energy is connected to both ends of C1.
[0010] The commercial power is a 380V three-phase power supply. After being rectified by AC, it is then connected to the energy convergence module. The AC rectification module includes diodes D1, D2, D3, D4, D5, and D6 that are first connected in series and then in parallel, and then are connected in parallel with three capacitors C5, C6, and C7 connected in series. The phase R is connected between D1 and D2, the phase S is connected between D3 and D4, and the phase I is connected between D5 and D6.
[0011] A first IGBT is provided on the circuit between the positive pole of the DC power collection module processed by the DC-DC MPPT intelligent controller and the energy convergence module. A second IGBT is provided on the circuit between the diode end of the commercial power AC rectification module and the energy convergence module. The two IGBTs are connected to the MCU. The MCU controls the IGBT of the DC-DC MPPT to perform voltage control through the DC-DC MPPT DC power collection feedback signal and the power collection feedback signal after the commercial power is rectified, so that the DC power voltage is always higher than the bus voltage after the AC power is rectified, realizing that the DC power always takes precedence over the AC power supply. Until the DC power is exhausted, it automatically switches to the AC power supply. The IPM module is driven by the energy convergence module to drive the DC inverter compressor and the DC inverter fan, thereby achieving the purpose of simultaneous power supply of AC / DC dual power supplies with the DC power taking precedence, effectively improving the energy utilization rate.
[0012] The beneficial effects of the present invention: It realizes the purpose of simultaneous power supply of AC / DC dual power supplies with the DC power taking precedence, thereby effectively improving the energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Attached Figure 1 is the principle block diagram of the present invention.
[0014] Attached Figure 2 is the principle block diagram of the complementary power supply of the present invention.
[0015] Appendix Figure 3 This is the schematic diagram of the AC / DC dual-power complementary power supply for the present utility model.
[0016] Appendix Figure 1 —3 shows a DC variable-frequency compressor 1, an evaporator 2, a condenser 3, a throttling device (electronic expansion valve) 4, and a DC fan 5. Specific Embodiment
[0017] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] Appendix Figure 1 —3 shows an AC / DC dual-power complementary air-conditioning unit, including an air-conditioning unit and a power supply system; the air-conditioning unit includes a DC variable-frequency compressor 1, an evaporator 2, a condenser 3, an electronic expansion valve 4, and a DC fan 5. The output end of the DC variable-frequency compressor 1 is connected to the evaporator 2 by a pipeline, the evaporator 2 is connected to the electronic expansion valve 4 by a pipeline, the electronic expansion valve 4 is connected to the condenser 3 by a pipeline, and the condenser 3 is connected to the input end of the DC variable-frequency compressor 1 by a pipeline. A DC fan 5 is installed on the condenser 3 to dissipate cold air into the air; the power supply system includes mains power supply and clean energy power supply. The mains power enters the energy convergence module after AC-DC rectification. The clean energy includes the electric energy generated by wind energy, electric energy, and tidal energy. After being processed by the DC-DC MPPT intelligent controller, it enters the energy convergence module. The energy convergence module is electrically connected to the IPM drive module and the DC fan control circuit module respectively. The IPM drive module, the DC fan control circuit module, and the DC water pump control circuit module are electrically connected to the DC variable-frequency compressor and the DC variable-frequency fan respectively to drive the DC variable-frequency compressor and the DC variable-frequency fan of the air-conditioning unit to operate.
[0019] The air-conditioning unit can operate in reverse for heating and heating.
[0020] The energy convergence module is composed of multiple capacitors.
[0021] The circuit principle of the power supply system is as follows:
[0022] The current supplied by the clean energy is first processed by a DC-DC MPPT intelligent controller. The DC-DC MPPT intelligent controller circuit includes capacitors C1, C2, C3, and C4 that are first connected in series and then in parallel. The positive poles of the parallel-connected capacitors C1 and C2 are connected to the positive pole of the parallel-connected capacitors C3 and C4 through an inductor L1. The negative poles of the capacitors C1, C2, C3, and C4 are connected. The positive and negative poles of the capacitor C4 are respectively connected to a DC power collection module. The DC power collection module is electrically connected to an energy convergence module. The energy convergence module is respectively electrically connected to two IPM drive modules and a power supply circuit. The two IPM drive modules are respectively connected to a DC variable-frequency compressor and a DC variable-frequency fan. The power supply circuit is connected to an MCU module. The current supplied by the clean energy is connected across the two ends of the capacitor C1;
[0023] The commercial power is a 380V three-phase power supply. After being rectified by AC, it is then connected to the energy convergence module. The AC rectification module includes diodes D1, D2, D3, D4, D5, and D6 that are first connected in series and then in parallel, and then are connected in parallel with three series-connected capacitors C5, C6, and C7. The phase electricity R is connected between the diodes D1 and D2. The phase electricity S is connected between the diodes D3 and D4. The phase electricity I is connected between the diodes D5 and D6;
[0024] A first IGBT is provided on the circuit between the positive pole of the DC power collection module processed by the DC-DC MPPT intelligent controller and the energy convergence module. A second IGBT is provided on the circuit between the anode end of the diode of the commercial power AC rectification module and the energy convergence module. The two IGBTs are connected to the MCU. The MCU controls the IGBT of the DC-DC MPPT for voltage control through the DC-DC MPPT DC power collection feedback signal and the power collection feedback signal after the commercial power is rectified, so that the DC power supply voltage is always higher than the bus voltage after the AC power supply is rectified, realizing that the DC power supply always supplies power prior to the AC power supply. Until the DC power supply is exhausted, it automatically switches to the AC power supply for power supply. It is supplied to the IPM module through the energy convergence module to drive the DC variable-frequency compressor and the DC variable-frequency fan, thereby achieving the purpose of simultaneous power supply of AC / DC dual power supplies with the DC power supply being prior, effectively improving the energy utilization rate.
[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A AC / DC dual-power complementary air conditioner unit, characterized in that: It includes an air-conditioning unit and a power supply system; the air-conditioning unit includes a DC variable-frequency compressor, an evaporator, a condenser, an electronic expansion valve, and a DC fan. The output end of the DC variable-frequency compressor is connected to the evaporator by a pipeline, the evaporator is connected to the electronic expansion valve by a pipeline, the electronic expansion valve is connected to the condenser by a pipeline, and the condenser is connected to the input end of the DC variable-frequency compressor by a pipeline. A DC fan is installed on the condenser to dissipate cold air into the air; The power supply system includes mains power supply and clean energy power supply. The mains power enters the energy convergence module after AC-DC rectification. The clean energy includes the electric energy generated by wind energy, solar energy, and tidal energy. After being processed by the DC-DC MPPT intelligent controller, it enters the energy convergence module. The energy convergence module is electrically connected to the IPM drive module and the DC fan control circuit module respectively. The IPM drive module, the DC fan control circuit module, and the DC water pump control circuit module are electrically connected to the DC variable-frequency compressor and the DC variable-frequency fan respectively to drive the DC variable-frequency compressor and the DC variable-frequency fan of the air-conditioning unit to operate.
2. The AC / DC dual-power complementary air-conditioning unit according to claim 1, characterized in that: The air-conditioning unit can operate in reverse to provide heating.
3. The AC / DC dual-power complementary air conditioner unit according to claim 1, characterized in that: The energy convergence module is composed of multiple capacitors.
4. The AC / DC dual-power complementary air conditioner unit according to claim 1, wherein: The principle of the power supply system is as follows: the current supplied by the clean energy is first processed by the DC-DC MPPT intelligent controller. The DC-DC MPPT intelligent controller circuit includes capacitors C1, C2, C3, and C4 that are first connected in series and then in parallel. The positive poles of the parallel capacitors C1 and C2 are connected to the positive poles of the parallel capacitors C3 and C4 through an inductor L1. The negative poles of the capacitors C1, C2, C3, and C4 are connected. The positive and negative poles of the capacitor C4 are respectively connected to the DC power power acquisition module. The DC power power acquisition module is electrically connected to the energy convergence module. The energy convergence module is electrically connected to two IPM drive modules and a power supply circuit respectively. The two IPM drive modules are respectively connected to the DC variable-frequency compressor and the DC variable-frequency fan. The power supply circuit is connected to an MCU module. The current supplied by the clean energy is connected to both ends of the capacitor C1; The mains power is a 380V three-phase power supply. After AC rectification processing, it is connected to the energy convergence module. The AC rectification module includes diodes D1, D2, D3, D4, D5, and D6 that are first connected in series and then in parallel, and is then connected in parallel with three capacitors C5, C6, and C7 connected in series. The phase electricity R is connected between the diodes D1 and D2, the phase electricity S is connected between the diodes D3 and D4, and the phase electricity I is connected between the diodes D5 and D6; A first IGBT is provided on the circuit between the positive electrode of the DC power collection module processed by the DC-DC MPPT intelligent controller and the energy convergence module. A second IGBT is provided on the circuit between the diode end of the mains AC rectification module and the energy convergence module. The two IGBTs are connected to the MCU. The MCU controls the IGBT of the DC-DC MPPT to perform voltage control through the DC-DC MPPT DC power collection feedback signal and the power collection feedback signal after the mains power is rectified, so that the DC power supply voltage is always higher than the bus voltage after the AC power supply is rectified, realizing that the DC power supply always takes precedence over the AC power supply for power supply. Until the DC power supply is exhausted, it automatically switches to the AC power supply for power supply. The IPM module is driven by the energy convergence module to drive the DC variable-frequency compressor and the DC variable-frequency fan, so as to achieve the purpose of simultaneous power supply of AC / DC dual power supplies and giving priority to the DC power supply, effectively improving the energy utilization rate.