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CN-121984437-A - Container type light and storage hybrid power supply system and thermal management method thereof

CN121984437ACN 121984437 ACN121984437 ACN 121984437ACN-121984437-A

Abstract

The application relates to the technical field of power equipment, in particular to a container type light and storage hybrid power supply system and a thermal management method thereof. The heat management system comprises a closed internal circulation air duct, an external air duct, a heat exchanger, a spray enhanced heat dissipation module, an air dehumidifying and water taking module and a control unit. The control unit controls the two working modes to switch according to the external environment humidity, wherein in the first mode, the air dehumidifying and water taking module is not started, the spraying device sprays to strengthen heat dissipation, in the second mode, the air dehumidifying and water taking module is started, condensed water is used as a spraying liquid source, and the dehumidified dry air is utilized to accelerate evaporation of the condensed water. According to the application, through humidity self-adaptive dual-mode thermal management, the risk of internal condensation is avoided, meanwhile, the efficient heat dissipation and the cascade utilization of energy sources are realized, and the reliability, the safety and the energy efficiency of the system under complex climates are obviously improved.

Inventors

  • LI YUNQIANG
  • LI LONGWEN
  • TANG JIAJIA
  • DU JIANFENG

Assignees

  • 首帆动力科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (10)

  1. 1. The container type light and storage hybrid power supply system comprises a box body (1), and a photovoltaic power generation unit (2), a battery energy storage unit, a power conversion unit and a thermal management system which are arranged on the box body (1), and is characterized in that the thermal management system comprises: The closed internal circulation air duct (3) is used for performing heat exchange with the heating equipment of the battery energy storage unit and the power conversion unit; An external air duct (4) for introducing external ambient air; A heat exchanger (5) having a first channel (51) and a second channel (52) separated by a heat conducting structure (53) and capable of heat exchange, the first channel (51) being connected in series with a closed internal circulation air duct (3), the second channel (52) being connected in series with an external air duct (4); The spray enhanced heat dissipation module comprises a spray device (6) for spraying liquid onto the heat conduction structure (53) and into the second channel (52); The air dehumidifying and water taking module (8) is arranged on the external air channel (4) and is positioned at the air inlet upstream of the second channel (52), and the air dehumidifying and water taking module (8) comprises a condensing plate (81) for cooling the flowing air below a dew point to separate out condensed water and a water collecting device (82) for collecting the condensed water; The control unit is used for controlling the thermal management system to switch between two working modes and adjust the operation strength according to the external environment humidity and the operation state parameters of the battery energy storage unit and the power conversion unit; In a first working mode, the air dehumidifying water taking module (8) is not started, and the spraying device (6) sprays to strengthen heat dissipation of the heat exchanger (5); in a second working mode, the air dehumidifying water taking module (8) is started, and condensed water collected by the water collecting device (82) is used as a spray liquid source of the spray device (6).
  2. 2. The container type light and storage hybrid power supply system according to claim 1, wherein the spray enhanced heat radiation module further comprises a water supply pipeline (61) communicated with an external water source or a water storage tank, and the control unit is configured to control the spray device (6) to obtain spray liquid from the external water source or the water storage tank in the first working mode.
  3. 3. The container-type light and storage hybrid power supply system according to claim 1, wherein the control unit is configured to trigger the first operation mode when detecting that the external environment humidity is lower than a first preset humidity threshold value, and trigger the second operation mode when detecting that the external environment humidity is higher than a second preset humidity threshold value.
  4. 4. The container type light and storage hybrid power supply system according to claim 2, wherein the heat conducting structure (53) comprises a metal heat conducting plate (531) separating a first channel (51) and a second channel (52), heat radiating fins (532) are arranged at two ends of the metal heat conducting plate (531), and in the second working mode, air flowing through the air dehumidifying water taking module (8) and dehumidified and cooled enters the second channel (52) to accelerate evaporation of liquid sprayed on the heat radiating fins (532).
  5. 5. The container type light and storage hybrid power supply system as set forth in claim 4, wherein the fin clearance direction of the radiating fins (532) in the first passage (51) is perpendicular to the inner circulation air flow direction, and the fin clearance direction of the radiating fins (532) in the second passage (52) is parallel to the outer air flow direction.
  6. 6. The container type light and storage hybrid power supply system according to claim 4, wherein the photovoltaic power generation unit (2) comprises a plurality of groups of fixing frames (21) arranged on the box body (1) and photovoltaic panels (23) arranged on the fixing frames (21), the fixing frames (21) are of hollow frame structures, the air exhausted from the second channels (52) flows through the inside of the frames and reduces the temperature value of the frames, the temperature of the photovoltaic panels (23) is reduced, a plurality of inclined exhaust holes are formed in the bottoms of the fixing frames (21), and the air in the fixing frames (21) is discharged into gaps between the fixing frames (21) and the top of the box body (1) and flows out of the photovoltaic power generation unit (2).
  7. 7. The container type light and storage hybrid power supply system according to claim 1, further comprising a liquid cooling system (11) arranged in the container body (1), wherein the liquid cooling system (11) is used for cooling high-heat-flux electric components, at least one section of radiating pipeline of the liquid cooling system (11) is arranged in the external air duct (4) and is positioned at the air outlet downstream of the second channel (52) of the heat exchanger (5), and the spraying device (6) is used for spraying water on the outer wall of the radiating pipeline.
  8. 8. The container type light and storage mixed power supply system according to claim 1, further comprising a condensation water cooling capacity preprocessor, wherein the condensation water cooling capacity preprocessor is a spiral coil (63), and the spiral coil (63) is wound on a section of the closed internal circulation air duct (3) located at the upstream of the air inlet of the first channel (51) and is used for precooling gas in the closed internal circulation air duct (3) before condensed water collected by the water collecting device (82) enters the spraying device (6).
  9. 9. The container type light and storage hybrid power supply system according to claim 4, wherein the spraying device (6) comprises a plurality of spraying heads (62), the spraying heads (62) are located in the second channels (52) and are arranged towards the radiating fins (532), the container body (1) is provided with a spraying liquid recovery assembly (7) for recovering accumulated liquid, and the spraying liquid recovery assembly (7) is used for collecting and timely discharging the accumulated liquid in the second channels (52).
  10. 10. A thermal management method for a container-type light and storage hybrid power supply system according to any one of claims 1 to 9, characterized by comprising the steps of: S1, acquiring external environment humidity; s2, judging and switching modes: If the external environment humidity is lower than a first preset threshold value, executing a first cooling mode, and controlling the spraying device (6) to spray the heat conduction structure (53) of the heat exchanger (5) by using an external water source or liquid in a water storage tank; if the external environment humidity is higher than a second preset threshold value, executing a second cooling mode, and sequentially executing: s21, starting the condensing plate (81), cooling and dehumidifying the introduced external air, separating out and collecting condensed water; S22, conveying the collected condensed water to the spraying device (6); S23, controlling the spraying device (6) to spray condensed water to the heat conduction structure (53) of the heat exchanger (5), and enabling dehumidified and cooled air to flow through the second channel (52) of the heat exchanger (5) at the same time, so as to accelerate evaporation of spraying liquid.

Description

Container type light and storage hybrid power supply system and thermal management method thereof Technical Field The application relates to the technical field of power equipment, in particular to a container type light-storage hybrid power supply system and a thermal management method thereof. Background The container type light storage hybrid power supply system integrates photovoltaic power generation, an energy storage battery and power conversion equipment in a standard container, is convenient to deploy and transport rapidly, and is widely applied to off-grid power supply, emergency power supply and other scenes. When the system operates, a large amount of heat is generated by internal electrical equipment, and the heat management performance of the system is directly related to the safety, service life and energy efficiency of the whole system. At present, the thermal management of the system mainly depends on two basic technical routes of forced air cooling and liquid cooling. The air cooling scheme has a simple structure, but has limited heat exchange capacity, and the direct introduction of external air can bring about the risk of invasion of dust and moisture. The liquid cooling scheme has higher heat exchange efficiency, but the system is complex and has high energy consumption, and the liquid cooling scheme is mainly used for cooling key components (such as a CPU). The limitations of the conventional schemes described above become particularly prominent in high temperature and high humidity special climatic environments, such as coastal or tropical regions. On the one hand, the ambient temperature often approaches or exceeds the upper allowable limit of the device, the heat dissipation demand increases drastically, and on the other hand, the air humidity exhibits significant fluctuations throughout the day. If such untreated high temperature and high humidity air is introduced directly into or contacted with the equipment area, when the temperature of the air is reduced below the dew point, water vapor therein will condense out on the lower temperature equipment surface to form water droplets. The condensation phenomenon is extremely easy to cause electrical short circuit, corrosion of devices and insulation faults, and seriously threatens the safe and reliable operation of equipment. In order to cope with the special working condition and give consideration to equipment safety, a part of the existing schemes adopt a mode of carrying out closed air circulation in the box body, and the circulating air is directly cooled through a built-in condensing plate so as to prevent external moisture and pollutants from invading. However, this solution of "the condensation plate directly cooling the internal circulating air" has the fundamental disadvantage that, when the temperature of the condensation plate is lowered in order to obtain a sufficient cooling capacity, the water vapour in the circulating air tends to condense into droplets on its surface. These droplets are very easily stripped and carried by the air flow, re-enter the internal air duct, and eventually still may reach the electrical equipment area without the risk of condensation being eradicated. This results in a difficult dilemma of lowering the temperature of the condensing plate to increase cooling efficiency, exacerbating the risk of internal condensation, limiting the cooling strength to avoid condensation, and in insufficient heat dissipation, the equipment may overheat. Therefore, an innovative thermal management scheme is needed in the art, which not only can intelligently adapt to wide-range climate conditions from drying to high temperature and high humidity, and realize efficient heat dissipation, but also can physically isolate the cooling process from the internal environment of the electrical equipment in principle, completely eradicate the risk of internal condensation, and simultaneously has good system integration level and energy utilization efficiency, so that the reliability, safety and economy of the container type light-storage hybrid power supply system in all-weather scenes are improved. Disclosure of Invention In order to realize efficient heat dissipation in a high-temperature and high-humidity environment on the premise of avoiding the risk of internal condensation, the application provides a container type light-storage hybrid power supply system and a thermal management method thereof. The application provides a container type light storage hybrid power supply system, which adopts the following technical scheme: the container type light and storage hybrid power supply system comprises a box body, and a photovoltaic power generation unit, a battery energy storage unit, a power conversion unit and a thermal management system which are arranged on the box body, wherein the thermal management system comprises: The closed internal circulation air duct is used for performing heat exchange with the heating equipmen