A skid-mounted distributed building energy station

Abstract

The application provides a skid-mounted distributed building energy station and belongs to the technical field of building energy. The application solves the problems of traditional distributed energy system, such as equipment dispersion, large on-site installation workload, complex debugging, large occupied area, and independent operation of power supply, cooling supply, heating supply and other systems, and poor coordination. The skid-mounted distributed building energy station comprises a photovoltaic outer wall, an electric heating and circulating device assembly, a control assembly, a battery assembly, a cold / heat storage device and a heat pump assembly. The cold / heat storage device and the heat pump assembly are installed in the photovoltaic outer wall. The electric heating and circulating device assembly is connected with the control assembly. The battery assembly is used for providing electric energy. The cold / heat storage device is used for storing cold / heat. The heat pump assembly comprises a cold machine and a hot machine. The cold machine and the hot machine are used for providing refrigeration and heating respectively. The electric heating and circulating device assembly, the control assembly, the battery assembly, the cold / heat storage device and the heat pump assembly are all installed in a skid-mounted mode. The skid-mounted distributed building energy station is mainly used for cooling supply or heating supply.

Description

Technical Field

[0001] This invention belongs to the field of building energy technology, and in particular relates to a skid-mounted distributed building energy station. Background Technology

[0002] With the increasing demands for building energy conservation, emission reduction, and energy efficiency, distributed energy systems are being used more and more widely in the building sector. Traditional distributed energy systems have scattered equipment, large on-site installation work, complex commissioning, and large land area. Moreover, each subsystem, such as power supply, cooling, and heating, often operates independently with poor coordination, making it difficult to achieve comprehensive optimization and intelligent management of energy. In addition, the system has insufficient capacity to absorb photovoltaic and wind power, weak interaction and response capabilities with the power grid, and high operating costs. Summary of the Invention

[0003] In view of this, the present invention aims to propose a skid-mounted distributed building energy station to solve the problems of traditional distributed energy systems, such as dispersed equipment, large on-site installation work, complex commissioning, large footprint, and poor coordination between power supply, cooling, and heating systems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a skid-mounted distributed building energy station, comprising a photovoltaic outer wall, an electric heating and circulation equipment assembly, a control assembly, a battery assembly, a cold / heat storage device, and a heat pump assembly. The electric heating and circulation equipment assembly, control assembly, battery assembly, cold / heat storage device, and heat pump assembly are all installed inside the photovoltaic outer wall. The electric heating and circulation equipment assembly is connected to the control assembly. The battery assembly provides electrical energy. The cold / heat storage device is used for cold / heat storage. The heat pump assembly includes a chiller and a heat engine, which respectively provide cooling and heating. The electric heating and circulation equipment assembly, control assembly, battery assembly, cold / heat storage device, and heat pump assembly are all skid-mounted.

[0005] Furthermore, water treatment equipment is also installed inside the photovoltaic outer wall.

[0006] Furthermore, the electric heating and circulation equipment assembly includes an electric heating mechanism and a heat exchanger, the electric heating mechanism is connected to the heat exchanger, a water source electric valve is installed on the electric heating mechanism, the electric heating mechanism is connected to a cold / heat storage device through a cold / heat energy transfer pump, and the cold / heat storage device is connected to a heat pump assembly through an energy storage pump.

[0007] Furthermore, a heat meter and an electric valve actuator are provided between the electric heating mechanism and the heat exchanger, and the electric heating mechanism is connected to the power supply component of the electric heating equipment.

[0008] Furthermore, the output end of the electric heating mechanism is equipped with a system constant pressure pump and a temperature and pressure instrument.

[0009] Furthermore, the control components include a heat meter data collector, an intelligent circuit breaker, a PLC, and a heat pump controller. The heat meter data collector collects heat meter data and transmits it to the PLC. The PLC controls the heat pump components to provide cooling and / or heating through the heat pump controller. The PLC controls the opening and closing of the intelligent circuit breaker.

[0010] Furthermore, the intelligent circuit breaker is connected to a disconnecting switch.

[0011] Furthermore, the building energy station is connected to mains power, photovoltaic, or wind power equipment.

[0012] Furthermore, the building energy station is connected to mains power, photovoltaic or wind power equipment via frequency converters and inverters.

[0013] Furthermore, the photovoltaic exterior wall is a deployable structure.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention integrates all the main functional components of the energy station into a skid-mounted structure composed of photovoltaic outer walls, realizing factory prefabrication, modular production, overall transportation and rapid on-site installation, which greatly shortens the construction cycle and reduces the technical requirements for the installation site.

[0015] 2. This invention achieves the production, storage, and efficient utilization of electrical, cold, and thermal energy through the coordinated arrangement of heat pump components, cold / heat storage equipment, battery components, and photovoltaic exterior walls. The system can intelligently schedule the operation of each device based on energy prices, load demand, and green energy generation, improving the utilization rate of off-peak electricity and green energy, and reducing overall operating costs.

[0016] 3. This invention achieves automated operation and refined management of energy stations through control components consisting of PLCs, intelligent circuit breakers, and other components. The intelligent circuit breakers support communication with the power grid, enabling the energy station to respond to grid dispatch commands, participate in demand-side response, and improve grid stability and the economic efficiency of energy station operation.

[0017] 4. By setting up isolating switches, system pressure pumps, water treatment equipment, temperature and pressure instruments, etc., this invention ensures the safe, stable and reliable operation of the electrical system and the thermal circulation system. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the structure of a skid-mounted distributed building energy station according to the present invention; Figure 2 This is an internal schematic diagram of a skid-mounted distributed building energy station according to the present invention; Figure 3 This is the system schematic diagram.

[0019] In the picture: 1-Photovoltaic exterior wall, 2-Electric heating and circulation equipment components, 3-Water treatment equipment, 4-Control components, 5-Battery components, 6-Cold / heat storage equipment, 7-Heat pump components, 8-Heat meter, 9-Electric heating mechanism, 10-Electric valve actuator, 11-Heat exchanger, 12-Water source electric valve, 13-Power supply components for electric heating equipment, 14-Temperature and pressure instruments, 15-System constant pressure pump, 16-Cold and heat energy transfer pump, 17-Energy storage pump, 18-Heat meter data collector, 19-Intelligent circuit breaker, 20-Disconnecting switch, 21-PLC, 22-Heat pump controller, 23-Frequency converter, 24-Inverter. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0021] Detailed Implementation Method 1: See Figure 1-3 This embodiment describes a skid-mounted distributed building energy station, comprising a photovoltaic outer wall 1, an electric heating and circulation equipment assembly 2, a control assembly 4, a battery assembly 5, a cold / heat storage device 6, and a heat pump assembly 7. The electric heating and circulation equipment assembly 2, control assembly 4, battery assembly 5, cold / heat storage device 6, and heat pump assembly 7 are all installed within the photovoltaic outer wall 1. The electric heating and circulation equipment assembly 2 is connected to the control assembly 4. The battery assembly 5 provides electrical energy, the cold / heat storage device 6 stores cold / heat, and the heat pump assembly 7 includes a chiller and a heat engine, which respectively provide cooling and heating. The electric heating and circulation equipment assembly 2, control assembly 4, battery assembly 5, cold / heat storage device 6, and heat pump assembly 7 are all skid-mounted.

[0022] In this embodiment, the outer shell of the energy station adopts a standard container steel structure frame, and at least one of its four outer walls is integrated with photovoltaic panels to form the photovoltaic outer wall 1 of the energy station. This gives the outer wall the functions of protection, power generation and aesthetics at the same time. All internal equipment is prefabricated, installed, wired and initially debugged in the factory. This skid-mounted form greatly reduces the complexity and workload of on-site construction. It is only necessary to transport the entire container to the site and connect it to the mains power, water source, building heating and cooling pipe network and data communication line to put it into operation. It significantly improves the system process quality, reduces the installation cycle, and has very low requirements for the installation site environment. It can be set up outdoors and saves valuable building interior space.

[0023] Using a heat pump component 7 as the core cold and heat source equipment, it operates in cooling mode in summer to produce chilled water and in heating mode in winter to produce hot water, unifying cooling and heating functions and avoiding the cost and space occupation of setting up separate boilers and chillers. It is also equipped with a cold / heat storage device 6. During off-peak hours at night or when there is a surplus of photovoltaic power generation, the heat pump is activated to store energy in the form of chilled or hot water. During peak energy consumption during the day, the stored cold or heat is directly released to achieve peak shifting and valley filling, which significantly reduces the system material cost and floor space. Connecting the heat pump component 7, the cold / heat storage device 6 and the building enables the circulation and transportation of cold and heat media.

[0024] Furthermore, the energy station is equipped with a PLC21 control system, which can monitor grid electricity prices, photovoltaic power generation, and building cooling and heating load demands in real time. The system automatically calculates the cost of using grid electricity, photovoltaic power, or battery power to drive the heat pump to produce a unit of cooling or heating at different times. Based on cost calculation and load forecasting, the PLC21 automatically generates the optimal energy storage and supply plan. For example, when electricity prices are low and building loads are low, the heat pump component 7 is automatically started to store cold or heat. When electricity prices are high or photovoltaic power generation is sufficient, the stored energy or photovoltaic power is used to supply energy directly. This realizes the predictive function of power regulation and energy storage, which is used for power peak shaving and reducing operating costs. The power demand-side response interface of the PLC21 is realized through the intelligent circuit breaker 19, which can receive signals from the grid dispatch department. When the grid needs to reduce peak loads, the energy station can automatically reduce the amount of electricity drawn from the grid and instead rely on its own energy storage for power supply, thereby having power demand-side response capability and supporting the stable operation of the grid.

[0025] Furthermore, the water in the cold / heat storage device 6 is cold water stored in summer. This cold water can flow through the battery assembly 5 through an auxiliary circulation loop to provide free cooling for the battery, provide temperature management, extend battery life, and reduce the energy consumption of the dedicated air conditioner. It also serves as a fire water source. When a risk of thermal runaway is detected in the battery assembly 5, the PLC21 can immediately activate the emergency program to spray low-temperature water for fire suppression. This method of using water from the energy storage system as a fire water source and using energy neutralization of cold to offset heat in fire suppression is efficient, economical, and has a rapid response.

[0026] Furthermore, the PLC21 of this energy station can be connected to the cloud service center via wired or wireless network. The cloud platform provides more powerful computing and data analysis capabilities, enabling it to construct building heating and cooling models based on building envelope information and historical meteorological data, perform more accurate load forecasting, conduct detailed system hydraulic and thermal calculations, optimize pump and valve selection and operation strategies, conduct construction cost optimization analysis during the planning stage, and optimize operating data during the operation stage, continuously adjusting operating parameters through machine learning algorithms to improve energy efficiency.

[0027] In this embodiment, a water treatment device 3 is also installed inside the photovoltaic outer wall 1 to treat the water quality in the circulation system.

[0028] In this embodiment, the electric heating and circulation equipment assembly 2 includes an electric heating mechanism 9 and a heat exchanger 11. The electric heating mechanism 9 is connected to the heat exchanger 11. A water source electric valve 12 is installed on the electric heating mechanism 9 to control the access of the water source. The electric heating mechanism 9 is connected to the cold / heat storage equipment 6 through a cold / heat energy transfer pump 16. The cold / heat storage equipment 6 is connected to the heat pump assembly 7 through an energy storage pump 17, forming a complete cold and heat energy generation, storage and circulation loop.

[0029] In this embodiment, a heat meter 8 and an electric valve actuator 10 are provided between the electric heating mechanism 9 and the heat exchanger 11 for measuring heat and controlling the valve opening. The electric heating mechanism 9 is connected to the power supply component 13 of the electric heating equipment to obtain working power.

[0030] In this embodiment, the output end of the electric heating mechanism 9 is equipped with a system constant pressure pump 15 and a temperature and pressure instrument 14, which are used to maintain the system pressure stability and monitor temperature and pressure parameters.

[0031] In this embodiment, the control component 4 includes a heat meter data collector 18, an intelligent circuit breaker 19, a PLC 21, and a heat pump controller 22. The heat meter data collector 18 collects data from the heat meter 8 and transmits it to the PLC 21. The PLC 21 controls the heat pump component 7 to provide cooling and / or heating through the heat pump controller 22. The PLC 21 controls the intelligent circuit breaker 19 to open and close.

[0032] In this embodiment, the intelligent circuit breaker 19 is connected to the disconnecting switch 20, which enhances the operational safety and maintenance convenience of the electrical system.

[0033] In this embodiment, the building energy station is connected to mains power, photovoltaic or wind power equipment to achieve complementary utilization of multiple energy sources. The building energy station is connected to mains power, photovoltaic or wind power equipment through frequency converter 23 and inverter 24 to adapt to the characteristics of different power sources and achieve efficient power conversion and control.

[0034] Detailed Implementation Method 2: See Figure 1-3 In this embodiment, the photovoltaic outer wall 1 is a mechanically deployable structure. During transportation and initial installation, the photovoltaic panels are attached to the surface of the box. When the site space allows, some or all of the photovoltaic panels can be unfolded by sliding rails or flipping to form an additional sunshade or power generation plane, thereby significantly increasing the photovoltaic installed capacity and power generation, and improving the energy self-sufficiency rate.

[0035] The specific embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific embodiments described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A skid-mounted distributed building energy station, characterized in that: The device includes a photovoltaic wall (1), an electric heating and circulation equipment assembly (2), a control assembly (4), a battery assembly (5), a cold / heat storage device (6), and a heat pump assembly (7). The electric heating and circulation equipment assembly (2), the control assembly (4), the battery assembly (5), the cold / heat storage device (6), and the heat pump assembly (7) are all installed inside the photovoltaic wall (1). The electric heating and circulation equipment assembly (2) is connected to the control assembly (4). The battery assembly (5) is used to provide electrical energy. The cold / heat storage device (6) is used for cold / heat storage. The heat pump assembly (7) includes a chiller and a heat engine, which provide cooling and heating respectively. The electric heating and circulation equipment assembly (2), the control assembly (4), the battery assembly (5), the cold / heat storage device (6), and the heat pump assembly (7) are all skid-mounted.

2. The skid-mounted distributed building energy station according to claim 1, characterized in that: Water treatment equipment (3) is also installed inside the photovoltaic outer wall (1).

3. A skid-mounted distributed building energy station according to claim 1, characterized in that: The electric heating and circulation equipment assembly (2) includes an electric heating mechanism (9) and a heat exchanger (11). The electric heating mechanism (9) is connected to the heat exchanger (11). A water source electric valve (12) is installed on the electric heating mechanism (9). The electric heating mechanism (9) is connected to the cold / heat storage equipment (6) through a cold and heat energy transfer pump (16). The cold / heat storage equipment (6) is connected to the heat pump assembly (7) through an energy storage pump (17).

4. A skid-mounted distributed building energy station according to claim 3, characterized in that: A heat meter (8) and an electric valve actuator (10) are provided between the electric heating mechanism (9) and the heat exchanger (11), and the electric heating mechanism (9) is connected to the power supply component (13) of the electric heating equipment.

5. A skid-mounted distributed building energy station according to claim 3, characterized in that: The output end of the electric heating mechanism (9) is equipped with a system constant pressure pump (15) and a temperature and pressure instrument (14).

6. A skid-mounted distributed building energy station according to claim 5, characterized in that: The control component (4) includes a heat meter collector (18), a smart circuit breaker (19), a PLC (21), and a heat pump controller (22). The heat meter collector (18) collects data from the heat meter (8) and transmits it to the PLC (21). The PLC (21) controls the heat pump component (7) to provide cooling and / or heating through the heat pump controller (22). The PLC (21) controls the opening and closing of the smart circuit breaker (19). A communication interface for connecting to the power grid is installed on the PLC (21).

7. A skid-mounted distributed building energy station according to claim 6, characterized in that: The intelligent circuit breaker (19) is connected to the disconnecting switch (20).

8. A skid-mounted distributed building energy station according to claim 7, characterized in that: The building energy station is connected to mains power, photovoltaic or wind power equipment.

9. A skid-mounted distributed building energy station according to claim 7, characterized in that: The building energy station is connected to mains power, photovoltaic or wind power equipment via frequency converter (23) and inverter (24).

10. A skid-mounted distributed building energy station according to claim 1, characterized in that: The photovoltaic exterior wall (1) is an expandable structure.

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