Solar energy utilization system

Abstract

The utility model discloses a solar energy utilization system, and belongs to the technical field of solar energy. The solar energy utilization system comprises a solar photovoltaic panel group, a control switch group, a first electric heating device, a storage battery pack, a first heat preservation box and a control device, the solar photovoltaic panel group is connected with the control switch group through an electric wire; the first electric heating device is used for heating the liquid medium in the first heat preservation box; a first temperature sensor is arranged in the first heat preservation box; the control switch group, the first electric heating device, the storage battery pack and the first temperature sensor are electrically connected with the control device, and the control device controls on-off of the control switch group and on-off of the first electric heating device. The solar energy utilization system can effectively solve the problems that in the prior art, electric energy generated by solar energy needs to be converted, loss in the conversion process is high, and the utilization efficiency of the solar energy is low; and electric energy generated by the solar photovoltaic panel needs high-voltage conversion, so that potential safety hazards are caused.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar energy, and specifically relates to a solar energy utilization system. Background Art

[0002] As the global demand for renewable energy grows, solar energy technology, as one of the most promising and widely used energy technologies, is gradually becoming an important force in promoting sustainable development. Especially in the household sector, as solar energy technology matures and costs decrease, more and more households are beginning to use solar energy as a source of electricity.

[0003] In the prior art, the use of solar energy is mainly achieved through solar photovoltaic panels, which can directly convert sunlight into electrical energy. However, there are several key technical problems in this process. First, the electricity generated by solar photovoltaic panels is mostly direct current, while household electrical appliances generally require alternating current. Therefore, it is necessary to convert direct current into alternating current through a DC-AC converter (inverter) for household use. However, this conversion process inevitably produces power loss, reducing the efficiency of solar energy utilization.

[0004] Secondly, the voltage output by solar photovoltaic panels is usually low voltage, which cannot directly meet the voltage requirements of household electrical appliances. Therefore, it is necessary to increase the low voltage electricity to a voltage suitable for household electricity through the series connection of multiple solar photovoltaic panels. However, this voltage-boosting process requires more expensive transmission lines, which not only increases the complexity and cost of the system, but also the presence of high voltage electricity also brings certain safety hazards, such as electric shock and fire. How to reduce the loss in the process of converting the electricity generated by solar energy and improve the utilization efficiency of solar energy; how to safely and effectively utilize the electricity generated by solar photovoltaic panels are current problems that need to be solved urgently. Utility Model Content

[0005] The purpose of this utility model is to provide a solar energy utilization system to solve the problems in the prior art that the electricity generated by solar energy needs to be converted to household high voltage, the loss in the conversion process is high, resulting in low efficiency of solar energy utilization; and the electricity generated by solar photovoltaic panels needs high voltage conversion, resulting in safety hazards. To achieve the above purpose, this utility model provides the following technical solutions:

[0006] A solar energy utilization system comprises a solar photovoltaic panel group, a control switch group, a first electric heating device, a battery group, a first insulation box and a control device; the solar photovoltaic panel group is connected to the control switch group through electric wires; the control switch group is respectively connected to the first electric heating device and the battery group through electric wires; the first electric heating device is used to heat the liquid medium in the first insulation box; a first temperature sensor is arranged in the first insulation box; the control switch group, the first electric heating device, the battery group and the first temperature sensor are respectively electrically connected to the control device, and the control device controls the on and off of the control switch group and the start and stop of the first electric heating device.

[0007] Furthermore, the control switch group includes a first circuit breaker and a second circuit breaker; the solar photovoltaic panel group is connected to the first circuit breaker and the second circuit breaker respectively through wires, that is, the first circuit breaker and the second circuit breaker are arranged in parallel; the first circuit breaker is connected to the first electric heating device through wires; the second circuit breaker is connected to the battery group through wires.

[0008] Furthermore, it also includes a second insulation box; the control switch group also includes a third circuit breaker; the third circuit breaker is respectively arranged in parallel with the first circuit breaker and the second circuit breaker; the third circuit breaker is connected to a second electric heating device through an electric wire; the second electric heating device is used to heat the liquid medium arranged in the second insulation box; a second temperature sensor is arranged in the second insulation box; the second temperature sensor and the second electric heating device are respectively electrically connected to the control device, and the control device controls the start and stop of the second electric heating device.

[0009] Furthermore, the control switch group also includes a fourth circuit breaker; the fourth circuit breaker is respectively arranged in parallel with the first circuit breaker, the second circuit breaker and the third circuit breaker; the fourth circuit breaker is connected to an inverter through wires; and the inverter is connected to the power grid through wires.

[0010] Furthermore, the electric energy generated by the solar photovoltaic panel group can directly drive the first electric heating device and the second electric heating device to operate.

[0011] Furthermore, the first insulated box is connected with a first delivery pipe and a second delivery pipe; the first insulated box is connected with the second insulated box through the first delivery pipe; a solenoid valve is provided on the first delivery pipe; and the solenoid valve is electrically connected to the control device.

[0012] Furthermore, a temperature controller is provided in the first insulation box to control the temperature of the liquid medium in the first insulation box to be 32 degrees Celsius or 45 degrees Celsius or other temperatures.

[0013] Furthermore, the current flowing between the solar photovoltaic panel group, the first circuit breaker and the first electric heating device is in the form of direct current directly generated by the solar photovoltaic panel group.

[0014] Furthermore, the current flowing between the solar photovoltaic panel group, the second circuit breaker and the battery group is in the form of direct current directly generated by the solar photovoltaic panel group.

[0015] Furthermore, the current flowing between the solar photovoltaic panel group, the third circuit breaker and the second electric heating device is in the form of direct current directly generated by the solar photovoltaic panel group.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model provides a solar energy utilization system, which can fully utilize the electricity generated by the solar photovoltaic panel group by directly converting the low-voltage DC power generated by the solar photovoltaic panel group into the power of the battery and the heat energy of the liquid medium in the incubator, without the need for DC to AC conversion;

[0018] 2. The utility model provides a solar energy utilization system, in which the temperature of the liquid medium in the first heat preservation box is set at a relatively low temperature of 32 degrees Celsius most of the time, so as to ensure that when the solar energy is stored in the form of heat energy, the temperature is relatively low. The closer the temperature is to the temperature of nature, the smaller the loss is, which further reduces the loss of energy and improves the utilization efficiency;

[0019] 3. The utility model provides a solar energy utilization system. When water is used as the liquid medium in the thermal insulation box, the water in the first thermal insulation box can be used for washing hands, washing face and taking a bath, and the water in the second thermal insulation box can be further heated to a higher temperature by solar energy for degreasing and disinfecting, etc. While ensuring the energy utilization rate, it can also meet a variety of water use scenarios, and has the effect of convenience and energy saving;

[0020] 4. The utility model provides a solar energy utilization system. When the output of the solar photovoltaic panel is stable, multiple solar photovoltaic panels are connected in parallel, and when the power generation is unstable, they are connected in series to stabilize the output voltage in a suitable range. First, it can be directly used without passing through the battery, thereby reducing the number of battery charge and discharge times and extending its service life. Second, compared with the household voltage of 220V, it is lower, the required cable cost is lower, and it is safer;

[0021] 5. The utility model provides a solar energy utilization system. The solar photovoltaic panel group can provide electric energy with a voltage lower than the safety voltage for human body when the power generation is stable or unstable, and provide a power supply mode with a voltage lower than the safety voltage for the kitchen / bathroom and even the whole house, which can avoid the risk of electric shock for consumers and provide a safer power environment; (correspondingly, it is necessary to develop low-voltage household appliances, such as air conditioners / refrigerators / hair dryers, etc.)

[0022] 6. The utility model provides a solar energy utilization system, which effectively utilizes the heat energy in the hot water in the first heat preservation box in the heat dissipation process in the late night period by using a heat pump, and then generates electricity by using a thermosensitive element;

[0023] 7. The utility model provides a solar energy utilization system, and some embodiments disclose a combination with the prior art, selecting a variety of hot water heating devices, such as air-energy water heaters, solar water heaters and vacuum heat exchangers, which can improve the heating efficiency of solar energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] In the accompanying drawings: 1-solar photovoltaic panel group, 2-control switch group, 21-first circuit breaker, 22-second circuit breaker, 23-third circuit breaker, 24-fourth circuit breaker, 3-first electric heating device, 4-battery group, 5-first insulation box, 6-control device, 7-second insulation box, 8-second electric heating device, 9-inverter, 10-grid, 11-first delivery pipe, 12-second delivery pipe. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the present invention is not limited to the following embodiments.

[0027] Embodiment 1:

[0028] See attached Figure 1A solar energy utilization system comprises a solar photovoltaic panel group 1, a control switch group 2, a first electric heating device 3, a battery group 4, a first heat preservation box 5 and a control device 6; the solar photovoltaic panel group 1 is connected to the control switch group 2 through wires; the control switch group 2 is respectively connected to the first electric heating device 3 and the battery group 4 through wires; the first electric heating device 3 is used to heat the liquid medium in the first heat preservation box 5; a first temperature sensor is arranged in the first heat preservation box 5; the control switch group 2, the first electric heating device 3, the battery group 4 and the first temperature sensor are respectively electrically connected to the control device 6, and the control device controls the on and off of the control switch group 2 and the start and stop of the first electric heating device 3. It can be seen from the above structure that the solar photovoltaic panel group 1 is composed of multiple solar photovoltaic panels, which are used to directly convert solar energy into electrical energy. The electrical energy converted by the solar photovoltaic panels in the prior art is usually low-voltage direct current. The low-voltage direct current converted by multiple solar photovoltaic panels is connected in parallel and connected to the control switch group 2 through a transmission line. The control switch group 2 is respectively connected to the first electric heating device 3 and the battery group 4 through the transmission line. The first electric heating device 3 and the battery group 4 are connected in parallel. The power transmission of the solar photovoltaic panel group 1 is controlled by the control switch group 2, which can be controlled according to user needs. The battery group 4 can directly store the electrical energy generated by the solar photovoltaic panel group 1. The first electric heating device 3 converts the electrical energy of the solar photovoltaic panel group 1 into thermal energy of the liquid in the first insulation box 5. The ordinary electric heating device can be directly integrated with the insulation box to directly heat the water in the insulation box. The preferred first electric heating device 3 can also use an air-energy water heater (a DC current drive type can be selected). Compared with an ordinary electric heater, the same electrical energy is heated to a preset temperature faster and the energy utilization rate is higher. The air-energy water heater needs to be connected to the insulation box through a water pipe. The temperature of the liquid medium in the first insulation box 5 is monitored in real time by the first temperature sensor. When heated to a predetermined temperature, the first circuit breaker 21 in the control switch group 2 is controlled by the control device 6 to cut off the current of the circuit. The specific first circuit breaker 21 can adopt the circuit breaker of the prior art. The opening and closing device of the circuit breaker can be manually controlled, and the circuit breaker can be opened and closed by an electrical signal. The circuit breaker is controlled by the electrical signal output by the control device 6 to realize the opening and closing control. The same second, third and fourth circuit breakers can be realized by the above-mentioned prior art. The user can control the electric energy generated by the solar photovoltaic panel group 1 to be preferentially transmitted to the battery group 4 or the first electric heating device 3 to heat the liquid medium according to their own needs.When the first insulated box 5 stores water, the heating temperature in the first insulated box 5 is pre-set at 32 degrees Celsius. This temperature not only ensures the appropriate temperature for washing face and hands in domestic water, but also the temperature closer to nature avoids less heat loss when the solar photovoltaic panel group 1 is stored in the form of thermal energy, thereby further improving energy utilization. Furthermore, the energy storage battery group can directly store the low-voltage direct current generated by the solar photovoltaic panel group 1, and the first electric heating device 3 is directly driven by low-voltage direct current, so that the electric energy generated by the solar photovoltaic panel group 1 can be safely and efficiently utilized without the need for conversion, thus avoiding the loss generated when converting to alternating current, and without the need for voltage conversion to 220V, thereby ensuring the user's electricity safety. At the same time, when the first insulated box 5 stores water, a time period is preset in advance so that the heating temperature in the first insulated box 5 is 45 degrees Celsius. This temperature is set in the evening time period when bathing is more frequent. At this time, more water is used for bathing, and the electric energy of the solar photovoltaic panel group can be fully utilized.

[0029] Embodiment 2:

[0030] See attached Figure 1 . On the basis of the first embodiment, the control switch group 2 includes a first circuit breaker 21 and a second circuit breaker 22; the solar photovoltaic panel group 1 is connected to the first circuit breaker 21 and the second circuit breaker 22 respectively through electric wires, that is, the first circuit breaker 21 and the second circuit breaker 22 are arranged in parallel; the first circuit breaker 21 is connected to the first electric heating device 3 through electric wires; the second circuit breaker 22 is connected to the battery group 4 through electric wires. It can be seen from the above structure that the control switch group 2 includes a first circuit breaker 21 and a second circuit breaker 22, which are respectively used to control the on-off of the circuit between the solar photovoltaic panel group 1 and the first electric heating device 3 and the on-off of the circuit between the solar photovoltaic panel group 1 and the battery group 4, so that the user can control according to his own needs, and the circuit connecting the solar photovoltaic panel group 1 and the first electric heating device 3 and the circuit connecting the solar photovoltaic panel group 1 and the battery group 4 are arranged in parallel.

[0031] It also includes a second insulation box 7; the control switch group 2 also includes a third circuit breaker 23; the third circuit breaker 23 is respectively arranged in parallel with the first circuit breaker 21 and the second circuit breaker 22; the third circuit breaker 23 is connected to a second electric heating device 8 through an electric wire; the second electric heating device 8 is used to heat the liquid medium arranged in the second insulation box 7; a second temperature sensor is arranged in the second insulation box 7; the second temperature sensor and the second electric heating device 8 are respectively electrically connected to the control device 6, and the start and stop of the second electric heating device 8 are controlled by the control device 6. As can be seen from the above structure, the control switch group 2 also includes a third circuit breaker 23. The circuit connecting the solar photovoltaic panel group 1 and the second electric heating device 8 is also connected in parallel with the circuit connecting the solar photovoltaic panel group 1 and the first electric heating device 3 and the circuit connecting the solar photovoltaic panel group 1 and the battery group 4. The three switch valves are used to control the transmission direction of the electric energy generated by the solar photovoltaic panel group 1. In the circuit where the third circuit breaker 23 is located, the solar photovoltaic panel group 1 is used to drive the second electric heating device 8 to heat the liquid medium in the second insulation box 7, converting the electric energy into heat energy. When the liquid medium in the second insulation box 7 is water, it can be used in higher temperature scenarios such as degreasing and disinfection of domestic water. The second temperature sensor in the second insulation box 7 can be fed back to the control device 6 for control. Compared with the temperature in the first insulation box 5, its heat energy is more easily lost. Therefore, in addition to the user controlling the switch valves according to his own needs, the control device 6 has a built-in control logic to preferentially transmit the electric energy of the solar photovoltaic panel group 1 to the first electric heating device 3 and the battery group 4, so as to avoid the loss of electric energy and improve the utilization rate of the solar photovoltaic panel group 1.

[0032] Embodiment three:

[0033] See attached Figure 1. On the basis of the second embodiment, the control switch group 2 further includes a fourth circuit breaker 24; the fourth circuit breaker 24 is respectively arranged in parallel with the first circuit breaker 21, the second circuit breaker 22 and the third circuit breaker 23; the fourth circuit breaker 24 is connected to the inverter 9 through a wire; the inverter 9 is connected to the power grid 10 through a wire. As can be seen from the above structure, in order to further ensure that the excess electric energy generated by the solar photovoltaic panel group 1 will not be wasted, the control switch group 2 also includes a fourth circuit breaker 24, which is used to connect the circuit of the solar photovoltaic panel group 1 with the power grid 10, and the circuit is also arranged in parallel with the other three circuits. An inverter 9 is arranged between the fourth circuit breaker 24 and the power grid 10. The current transmitted to the national power grid 10 needs to be converted into alternating current. The inverter 9 is used to convert the direct current generated by the solar photovoltaic panel group 1 into alternating current and connect it to the Internet. This circuit can ensure that when the electric energy that can be stored in the other three circuits reaches the maximum value, the electric energy that the solar photovoltaic panel group 1 continues to generate is not wasted, and the utilization rate is also improved. At this time, the electric energy transmitted to the national grid is the electric energy that is boosted to meet the conditions for accessing the grid after multiple solar photovoltaic panels are connected in series. The solar photovoltaic panel group 1, the first circuit disconnector 21, the second circuit disconnector 22, the third circuit disconnector 23 and the fourth circuit disconnector 24 and the loads connected to them, namely the first electric heating device 3, the battery group 4, the second electric heating device 8 and the power grid 10 can be implemented by the existing light storage and charging integrated machine.

[0034] The electric energy generated by the solar photovoltaic panel group 1 can directly drive the first electric heating device 3 and the second electric heating device 8 to operate. As can be seen from the above structure, the first electric heating device 3 and the second electric heating device 8 are both models that can be directly driven by low-voltage direct current, without the need to convert direct current into alternating current, and also without the need to convert low voltage into high voltage, thereby ensuring the safety of user use.

[0035] The first insulated box 5 is connected with a first delivery pipe 11 and a second delivery pipe 12; the first insulated box 5 is connected with the second insulated box 7 through the first delivery pipe 11; the first delivery pipe 11 is provided with an electromagnetic valve; the electromagnetic valve is electrically connected to the control device 6. As can be seen from the above structure, the first insulated box 5 and the second insulated box 7 are connected through the first delivery pipe 11, and the second insulated box 7 is preferably arranged at a spatial position below the first insulated box 5, and the liquid medium in the first insulated box 5 can flow directly into the second insulated box 7 by gravity, and the heat energy stored in the liquid in the first insulated box 5 and the second insulated box 7 can be converted into electrical energy or other energy for use by existing technology. When the medium in the first insulated box 5 and the second insulated box 7 is water, the first insulated box 5 is used for domestic water such as washing hands, washing face and taking a bath through the second delivery pipe 12, and the second insulated box 7 is used for degreasing and disinfection, etc. For domestic water in higher temperature scenarios, the water that flows directly into the second insulated box 7 through the first insulated box 5 has a certain amount of thermal energy. The second electric heating device 8 can heat the water in the second insulated box 7 to a suitable temperature more quickly, which is very convenient and energy-saving, especially in outdoor camping and other scenarios; the water in the second insulated box 7 can also be directly replenished from the tap water pipeline (for example, in hospital use scenarios, when cleaning medical supplies, tap water has fewer bacteria than the water stored in the first insulated box, because in some cases, the water in the first insulated box 5 has a longer storage time and has a longer time to breed bacteria). Convenient control can be achieved by electrically connecting the solenoid valve to the control device 6.

[0036] The first thermal insulation box 5 is provided with a temperature controller to control the temperature of the liquid medium in the first thermal insulation box to be 32 degrees Celsius or 45 degrees Celsius or other temperatures. As can be seen from the above structure, the temperature of the medium in the first thermal insulation box 5 is maintained at 32 degrees Celsius through the temperature controller, ensuring the appropriate temperature for washing face and hands in domestic water. At the same time, the temperature closer to nature avoids less heat loss when the solar photovoltaic panel group 1 is stored in the form of thermal energy, further improving energy utilization; at the same time, the temperature of the liquid medium in the first thermal insulation box 5 can be controlled by the temperature controller to be heated to 45 degrees Celsius during the preset evening time period. The frequency of bathing during this time period is relatively high, which is convenient for users to get bath water of suitable temperature more quickly.

[0037] Embodiment 4:

[0038] See attached Figure 1. On the basis of the third embodiment, the current flowing between the solar photovoltaic panel group 1, the first circuit breaker 21 and the first electric heating device 3 is in the form of direct current directly generated by the solar photovoltaic panel group 1. As can be seen from the above structure, the loss of electric energy transmitted in the form of direct current is much lower than the loss when the prior art needs to convert direct current into alternating current. At the same time, the switch valve on the circuit and the first electric heating device 3 can directly circulate the low-voltage direct current generated by the solar photovoltaic panel group 1, which not only ensures safety but also improves the utilization rate of solar energy.

[0039] The current flowing between the solar photovoltaic panel group 1, the second circuit breaker 22 and the battery group 4 is in the form of direct current directly generated by the solar photovoltaic panel group 1. As can be seen from the above structure, the loss of electric energy transmission in the form of direct current is much lower than the loss when direct current is converted into alternating current in the prior art. At the same time, the switch valve on the circuit and the battery group 4 can directly flow the low-voltage direct current generated by the solar photovoltaic panel group 1, which not only ensures safety but also improves the utilization rate of solar energy.

[0040] The current flowing between the solar photovoltaic panel group 1, the third circuit breaker 23 and the second electric heating device 8 is in the form of direct current directly generated by the solar photovoltaic panel group 1. As can be seen from the above structure, the loss of electric energy transmission in the form of direct current is much lower than the loss when direct current is converted into alternating current in the prior art. At the same time, the switch valve on the circuit and the second electric heating device 8 can directly flow the low-voltage direct current generated by the solar photovoltaic panel group 1, which not only ensures safety but also improves the utilization rate of solar energy.

[0041] The control switch group 2 of the utility model can be integrated into a control panel, which can be controlled by the user to control the on and off of each circuit. At the same time, the control device 6 can also ensure that when the electric energy that can be stored in the three paths of the second circuit breaker 22, the third circuit breaker 23 and the fourth circuit breaker 24 reaches the upper limit, the fourth circuit breaker 24 can be controlled to be connected to transmit the electric energy to the national grid 10 to avoid waste.

[0042] Embodiment five:

[0043] Preferably, as a supplement to embodiments one to four, in specific application scenarios, such as family hotels, the second delivery pipe 12 of the utility model is connected to a double-outlet faucet in the prior art, the document number is CN215334632U, and the water inlet end of the double-outlet faucet is provided with three water inlet pipes. The second delivery pipe 12 is connected to the two water inlet pipes of the double-outlet faucet through a three-way pipe joint, and the other water inlet pipe is connected to the tap water pipe. An instant hot water inlet pipe is arranged on one of the hot water inlet pipes to control the control valve of the double-outlet faucet. Controlling the water in one of the water outlet pipes can realize three modes of delivering cold water, delivering hot water, and mixing cold and hot water; controlling the other water outlet pipe to only deliver hot water, and The required temperature can be adjusted by the instant hot water heater, and the two water outlet pipes can output water of four temperatures: cold water, hot water, a mixture of cold and hot water, and higher temperature, to adapt to different water use scenarios in hotels and homestays. Specifically, the instant hot water heater is installed under the washbasin in the bathroom, and a double water outlet faucet is set on the washbasin. Travelers can wash their hands and face in winter by directly controlling the double water outlet faucet to output 32-degree hot water from the first insulation box 5, or use the hot and cold water mixing mode to further adjust to a suitable water temperature. When there is a need for degreasing, etc., the higher temperature water of the double water outlet faucet (the specific temperature can be adjusted by the instant hot water heater) can be controlled to wash dishes. In summer, the double water outlet faucet can be directly controlled to output cold water for use. The instant hot water heater can be powered by low-voltage DC type, which can be directly powered by the solar photovoltaic panel group 1. It needs to arrange a special DC cable for power transmission. The instant hot water heater can also be powered by the national grid. The power output by the national grid is converted into DC power suitable for the instant hot water heater through the switching power supply. The AC cable used between the national grid and the switching power supply is pre-arranged in hotels, homestays or families. Compared with the power of the solar photovoltaic panel group 1, it is no longer necessary to set up new cables, which can save the required DC cables. The instant hot water heater can choose a volumetric instant hot water heater that can store a certain amount of hot water. At the same time, it can also choose an ordinary instant hot water heater that directly heats the water in the convection pipe.

[0044] Embodiment six:

[0045] As a supplement to embodiments one to four, in some specific application scenarios, such as family hotels, the second delivery pipe 12 of the utility model is connected with a double-outlet faucet in the prior art, the document number is CN215334632U, and the water inlet end of the double-outlet faucet is provided with three water inlet pipes. Compared with embodiment five, the difference between this embodiment and embodiment five is that a water inlet pipe of the double-outlet faucet is connected between the second delivery pipe 12, and the other two water inlet pipes are connected to the tap water pipe through a three-way pipe joint. The instant hot water heater is set on one of the water inlet pipes that delivers cold water. Similarly, the double-outlet faucet has four modes of controlled output of cold water, mixed cold and hot water, hot water and higher temperature water. Its usage scenario and the power supply method and signal selection of the instant hot water heater are consistent with embodiment five.

[0046] Embodiment seven:

[0047] As a supplement to embodiments one to four, in some specific application scenarios, such as family hotels, the second delivery pipe 12 of the utility model is connected to a single water outlet faucet, which is provided with two water inlet pipes and one water outlet pipe. The two water inlet pipes are respectively connected to the second delivery pipe 12 and the tap water pipe, and an instant hot water heater is arranged on the water inlet pipe connected to the hot water. The instant hot water heater is provided with three working modes. The single water outlet faucet can cooperate with the three working modes of the instant hot water heater to realize four water outlet modes of cold water, mixed cold and hot water, hot water and higher temperature water. Specifically: 1. Adjust the instant hot water heater to the first mode, control the control valve on the single water outlet faucet to open directly, and the water output by the water outlet pipe at this time is a mixture of cold and hot water output by the two water inlet pipes, and further adjust the mixing ratio to a suitable water temperature as needed. 2. Control the instant hot water heater to the second mode, control the control valve on the single-outlet faucet to open directly, and the outlet pipe outputs the 32-degree water in the first insulation box 5 directly heated to a higher temperature by the instant hot water heater, which is used to wash dishes and remove grease; open the control valve twice within the preset time, that is, after the on / off / on operation, the outlet pipe outputs the 32-degree warm water in the first insulation box 5, which is used for washing hands and face in a relatively cold environment. 3. Adjust the instant hot water heater to the third mode, control the control valve on the single-outlet faucet to open directly, and the outlet pipe outputs the cold water in the tap water pipe, which is used for washing hands and face in a relatively hot environment. The instant hot water pot can choose the low-voltage DC type, which can be directly powered by the solar photovoltaic panel group 1, and a special DC cable needs to be arranged for power transmission; the instant hot water pot can also be powered by the national grid. The electric energy output by the national grid is converted into DC power suitable for the instant hot water pot by a switching power supply. Compared with using the electric energy of the solar photovoltaic panel group 1, the required DC cable can be saved; the model of the instant hot water pot can be selected from the volumetric type and the ordinary type. The volumetric instant hot water pot has a container to store a certain amount of hot water, while the ordinary instant hot water pot directly heats the water in the convection pipe.

[0048] Embodiment eight:

[0049] As a different setting of the seventh embodiment, the difference is that the instant hot water heater is set on the water inlet pipe connected to the tap water, and it also cooperates with the single water outlet faucet to realize four water outlet modes. Specifically, 1. Adjust the instant hot water heater to the first mode, control the control valve on the single water outlet faucet to open directly, and the water output by the water outlet pipe is a mixture of cold and hot water output by the two water inlet pipes, and further adjust the mixing ratio to a suitable water temperature as needed. 2. Control the instant hot water heater to the second mode, control the control valve on the single water outlet faucet to open directly, and the water outlet pipe outputs 32 degrees warm water in the first insulation box 5, which is used for washing hands and face in a cold environment. 3. Adjust the instant hot water heater to the third mode, control the control valve on the single water outlet faucet to open directly; open the control valve twice within the preset time, that is, after the operation of opening / closing / opening, the water outlet pipe outputs higher temperature water heated to a high temperature by the instant hot water heater, which is used to wash dishes and remove grease. The instant hot water pot can choose the low-voltage DC type, which can be directly powered by the solar photovoltaic panel group 1, and a special DC cable needs to be arranged for power transmission; the instant hot water pot can also be powered by the national grid. The electric energy output by the national grid is converted into DC power suitable for the instant hot water pot by a switching power supply. Compared with using the electric energy of the solar photovoltaic panel group 1, the required DC cable can be saved; the model of the instant hot water pot can be selected from the volumetric type and the ordinary type. The volumetric instant hot water pot has a container to store a certain amount of hot water, while the ordinary instant hot water pot directly heats the water in the convection pipe.

[0050] Embodiment nine:

[0051] As a supplement to embodiments one to eight, the control device sets two time modes, namely, evening mode and late night mode. Specifically: the evening mode means that the time is in the evening, and the specific time period can be freely adjusted. Since there are many people taking a bath frequently during this time period, the control device controls the electric energy of the solar photovoltaic panel group 1 to be preferentially transmitted to the first electric heating device 3 for heating the water in the first insulation box 5 for users to use for bathing. At this time, the hot water heated by the solar photovoltaic panel group 1 can be used by users in time, reducing the energy loss caused by the long storage time of hot water in the insulation box, resulting in the lowering of the hot water temperature and the loss of heat energy. The prior art stores electric energy as heat energy by heating water, and its cost is lower than that of directly storing electricity through batteries, but heat energy is also easily lost under long-term storage. The utility model can make full use of the stored heat energy in time, which not only retains the advantage of low cost when electric energy is converted into heat energy for storage by heating water, but also ensures that the heated water can be used in time, reducing heat loss to a minimum; late night mode, that is, water is used less at this time, At this time, the electric energy generated by the solar photovoltaic panel group 1 is also relatively small, and can only be used to drive electrical appliances using direct current. At this time, the user needs to heat hot water directly through the instant hot water treasure, and the control device switches the instant hot water treasure to be powered by the solar photovoltaic panel group 1 to be powered by the national grid (this mode is used for the instant hot water treasure, which can be powered by the solar photovoltaic panel group 1 and the national grid respectively. In conventional homes or hotels, the circuit of the national grid is pre-arranged, and it is connected to the instant hot water treasure of the utility model through a transmission line, and then the power supply mode of the instant hot water treasure is switched through the control device 6). The electric energy of the solar photovoltaic panel group 1 is preferentially transmitted to the battery group 4, avoiding the loss of heat energy when the electric energy of the solar photovoltaic panel group 1 is stored in the form of hot water heat energy in the middle of the night as time goes by and the water consumption is small. For the remaining hot water in the first insulation box 5 in the middle of the night, its heat energy can also be fully utilized by setting a heat pump, such as arranging a vacuum tube heat exchanger, and the heat of the remaining hot water is effectively utilized, and power is generated by a thermistor, and the heat pump and the thermistor are controlled to generate electricity in the late night mode. By controlling the priority of the electric energy of the solar photovoltaic panel group 1 in different time periods, the electric energy utilization rate of the utility model is further improved, the energy loss is minimized, and the energy utilization rate is high.

[0052] Embodiment ten:

[0053] As a supplement to embodiments one to nine, taking into account that the power supply mode of the first and second electric heating devices is directly derived from the electric energy generated by the solar photovoltaic panel group 1, the power supply of the solar photovoltaic panel group 1 is unstable on cloudy days, in order to further ensure the stability of the first and second electric heating devices, two new power supply modes are added, namely, on the one hand, the electric energy with a stable voltage stored in the battery group can be used to power the first and second electric heating devices; on the other hand, when an air-energy water heater is selected as a heating device, some air-energy water heaters need to use 220V voltage electric energy, so the high voltage after multiple solar photovoltaic panels are connected in series is used to convert the electric energy through an inverter to drive the air-energy water heater or other heating devices that need to use the converted voltage form, to ensure that the heating device can work stably under special circumstances. At the same time, some heating devices in the prior art, such as the heating device of an air-energy water heater, can accept voltages within a certain range. Preferably, a heating device that can accept a voltage of 0 to 220V is selected. The heating device is provided with an over- and under-voltage protector, which is used to detect the voltage of the electric energy transmitted by the transmission line. The voltage generated by the solar photovoltaic panel group 1 is unstable due to the weather. Sometimes it can generate a relatively stable high voltage, but sometimes it can only generate a low voltage. Even if the voltage of the electric energy generated by multiple solar photovoltaic panels is connected in series, it still cannot reach a high voltage. At this time, the over- and under-voltage protector of the above-mentioned heating device detects the voltage of the electric energy transmitted by the solar photovoltaic panel group 1, and controls the heating device to switch to a mode suitable for the voltage according to the voltage to ensure the normal use of the heating device. For example, the heating device is provided with four modes of 0 to 55V, 55 to 110V, 110 to 165V, and 165 to 220V. The controller controls the heating device to switch to an appropriate mode to work by detecting the voltage of the transmitted electric energy. Furthermore, two modes of output voltage are pre-arranged in the solar photovoltaic panel group 1. The photovoltaic panels of the solar photovoltaic panel group 1 can be controlled to operate in series and parallel modes by switching the circuit. In the series mode, the output voltage is up to 220V. Since the instant heating devices 3 and the second heating devices 5 used, such as the air-energy water heater, can be driven by voltages in different ranges, when the solar photovoltaic panel group 1 generates electricity stably, it is preferentially controlled to operate in parallel mode to supply energy to each heating device and the battery pack. At night or when the solar photovoltaic panels are blocked by obstructions, resulting in a very low voltage, it is controlled to operate in series mode to increase the voltage to a suitable range for power supply. The increased voltage is the same as the voltage generated by a single solar photovoltaic panel when the weather conditions are good. Therefore, compared with the high voltage of 220V, the selected transmission cable has a lower cost.

[0054] Embodiment eleven:

[0055] The first electric heating device and the first heat preservation box can directly use a solar water heater, and the electric energy generated by the solar photovoltaic panel group 1 is used for the battery group, the second heating device and the Internet. The solar water heater is a heating device that converts sunlight energy into thermal energy, and heats water from low temperature to high temperature to meet people's hot water use in life and production. The temperature heated by the solar water heater is changed by the volume of water in the water tank. The less water in the water tank at the same time, the higher its temperature. Therefore, in order to facilitate the control of the outlet water temperature of the solar water heater, multiple automatic baffles are set in the water tank to change the volume of water stored in the water tank, so as to reach the preset 32 ​​degrees Celsius and 45 degrees Celsius in the evening, further fully utilizing solar energy and reducing energy waste. The other implementation methods such as the second heating device and the battery group are consistent with the first to tenth embodiments, and will not be repeated here.

[0056] Embodiment 12:

[0057] As a supplement to Embodiments 1 to 11, the utility model can be combined with existing AI technology to learn the user's usage habits. For example, in a family usage scenario, the first heating device is an instant hot water heater, which is used to heat the water in the first insulation box to a bathing temperature of 45 degrees Celsius in the evening, and then adjust the temperature to suitable temperatures for different family members in combination with the usage habits of each family member. At the same time, combined with face recognition technology, the following application scenarios are realized, in which different family members are scanned, and the appropriate temperature is preset in combination with the bathing habits of the family members, so that each family member can directly flow out hot water at a temperature suitable for the family member when taking a bath. This not only saves water resources and prevents water from being wasted due to insufficient temperature, but also makes full use of hot water heated by solar energy.

[0058] Embodiment 13:

[0059] As a replacement solution for embodiments one to twelve, the electric energy generated by the solar photovoltaic panel group 1 is replaced by a battery group or wind power generation for power supply. This is suitable for places where it is inconvenient to set up a solar photovoltaic panel group or where the sunlight energy is insufficient. The battery group or wind power generation function of the existing technology can provide energy for the entire household electricity consumption, while ensuring stable electricity consumption. When the battery group or wind power generation energy is insufficient or needs maintenance, it can also be powered by the national grid.

[0060] Embodiment 14:

[0061] Furthermore, in some scenarios where solar energy cannot be used, the whole house can be powered by DC through the national grid. By setting a switching power supply, the AC power can be converted into DC power and the voltage can be adjusted. Household appliances in the prior art are all driven by AC power because the production cost of AC motors is lower than that of DC motors. However, with the technical requirements, for example, some specific tasks require motor rotation, such as air conditioning, etc., in order to adjust the motor speed, the technology of adding inverters is required, and the cost of household appliances using AC power is gradually increasing. The work of the inverter will also consume electrical energy and its own losses, etc., and the rotating motor driven by DC power can achieve the change of motor speed directly by adjusting the voltage. Therefore, DC power is used as the driving power in the whole house scenario. At the same time, from the perspective of economy, some large household appliances such as air conditioners and refrigerators are powered by high-voltage direct current. These appliances that rarely come into direct contact with the power supply can be driven by high-voltage direct current, so thinner transmission lines can be used, saving the cost of the overall layout. On the other hand, from a safety perspective, low-voltage direct current is used to power some equipment such as kettles that have low power, often come into contact with water, and are prone to safety accidents. The alternating current is converted and reduced through a switching power supply to drive the kettle and other devices. This can ensure people's safety when using it, and at the same time reduce the cost of safety protection measures set up to prevent electric shock.

[0062] In the above-mentioned embodiments 1 to 14, the whole house uses direct current to reduce the loss of current conversion. The electrical appliances in the whole house are also driven by direct current. The battery group or solar photovoltaic panel group directly outputs direct current. The electric energy output by the national grid is first converted from alternating current to direct current through a switching power supply, and the electric energy output by wind power generation is first rectified and then converted from alternating current to direct current through a switching power supply, and adjusted to the voltage required by different electrical appliances for power supply. The alternating current output by the power grid 10 is converted into direct current through a switching power supply to drive the direct current appliances. The switching power supply can be replaced by an industrial frequency power supply that converts alternating current to direct current.

[0063] Preferably, when the national grid supplies power to all the electrical appliances in the house, a low-power switching power supply and a storage battery are arranged between the national grid and the electrical appliances in the house. The national grid converts the AC power into DC power through the switching power supply and transmits it to the storage battery. When the DC appliances in the house are powered by the storage battery, if the electric energy of the national grid is then supplied to the electrical appliances in the house via the switching power supply, the power of the switching power supply needs to match the maximum power of the electrical appliances in the house when they are used. For example, when all the electrical appliances in the house are used at the same time, the power required at this time is the largest, and the switching power supply with the maximum power at this time needs to be matched to perform the conversion between AC and DC. However, the high-power switching power supply The cost of the power source is high, so a battery is set between the switching power supply and the appliances in the house. A low-power switching power supply can be selected. When the power required by the appliances used in the whole house is greater than the power of the switching power supply, the battery plays a discharging role to supplement the insufficient power of the switching power supply; when the power of the appliances used in the whole house is lower than the power of the switching power supply, the electric energy discharged by the battery to the appliances is less than the electric energy input to the battery by the switching power supply. At this time, the battery mainly plays a charging role. Therefore, the design only needs to select a suitable low-power switching power supply, and there is no need to use a switching power supply that meets the highest power consumption of the whole house. Based on this, the electric energy can also be stored in the battery during the low-peak period of electricity charges, and the electric energy in the battery can be used during the peak period of electricity charges to stagger the electricity consumption and save the cost of electricity charges.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A solar energy utilization system, characterized in that: The invention comprises a solar photovoltaic panel group (1), a control switch group (2), a first electric heating device (3), a battery group (4), a first heat preservation box (5) and a control device (6); the solar photovoltaic panel group (1) is connected to the control switch group (2) through electric wires; the control switch group (2) is respectively connected to the first electric heating device (3) and the battery group (4) through electric wires; the first electric heating device (3) is used to heat the liquid medium in the first heat preservation box (5); a first temperature sensor is arranged in the first heat preservation box (5); the control switch group (2), the first electric heating device (3), the battery group (4) and the first temperature sensor are respectively electrically connected to the control device (6), and the control device controls the on and off of the control switch group (2) and the start and stop of the first electric heating device (3).

2. A solar energy utilization system according to claim 1, characterized in that: The control switch group (2) comprises a first circuit breaker (21) and a second circuit breaker (22); the solar photovoltaic panel group (1) is connected to the first circuit breaker (21) and the second circuit breaker (22) respectively through electric wires, that is, the first circuit breaker (21) and the second circuit breaker (22) are arranged in parallel; the first circuit breaker (21) is connected to the first electric heating device (3) through electric wires; and the second circuit breaker (22) is connected to the battery group (4) through electric wires.

3. A solar energy utilization system according to claim 2, characterized in that: The invention also comprises a second heat preservation box (7); the control switch group (2) further comprises a third circuit breaker (23); the third circuit breaker (23) is respectively arranged in parallel with the first circuit breaker (21) and the second circuit breaker (22); the third circuit breaker (23) is connected to a second electric heating device (8) via an electric wire; the second electric heating device (8) is used for heating a liquid medium arranged in the second heat preservation box (7); a second temperature sensor is arranged in the second heat preservation box (7); the second temperature sensor and the second electric heating device (8) are respectively electrically connected to the control device (6), and the control device (6) controls the start and stop of the second electric heating device (8).

4. A solar energy utilization system according to claim 3, characterized in that: The control switch group (2) further comprises a fourth circuit breaker (24); the fourth circuit breaker (24) is respectively arranged in parallel with the first circuit breaker (21), the second circuit breaker (22) and the third circuit breaker (23); the fourth circuit breaker (24) is connected to an inverter (9) via electric wires; the inverter (9) is connected to a power grid (10) via electric wires; the alternating current output by the power grid (10) is converted into direct current by a switching power supply and then drives a direct current appliance; the switching power supply can be replaced by an industrial frequency power supply that converts alternating current into direct current.

5. A solar energy utilization system according to claim 3, characterized in that: The electric energy generated by the solar photovoltaic panel group (1) can directly drive the first electric heating device (3) and the second electric heating device (8) to operate.

6. A solar energy utilization system according to claim 3, characterized in that: The first heat preservation box (5) is connected to a first delivery pipe (11) and a second delivery pipe (12); the first heat preservation box (5) is connected to the second heat preservation box (7) through the first delivery pipe (11); a solenoid valve is provided on the first delivery pipe (11); the solenoid valve is electrically connected to the control device (6).

7. A solar energy utilization system according to claim 1, characterized in that: The first thermal insulation box (5) is provided with a temperature controller for controlling the temperature of the liquid medium in the first thermal insulation box to be 32 degrees Celsius or 45 degrees Celsius or other temperatures.

8. A solar energy utilization system according to claim 2, characterized in that: The current flowing between the solar photovoltaic panel group (1), the first circuit breaker (21) and the first electric heating device (3) is in the form of direct current directly generated by the solar photovoltaic panel group (1).

9. A solar energy utilization system according to claim 2, characterized in that: The current flowing between the solar photovoltaic panel group (1), the second circuit breaker (22) and the storage battery group (4) is in the form of direct current directly generated by the solar photovoltaic panel group (1).

10. A solar energy utilization system according to claim 3, characterized in that: The current flowing between the solar photovoltaic panel group (1), the third circuit breaker (23) and the second electric heating device (8) is in the form of direct current directly generated by the solar photovoltaic panel group (1).

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