A thermal management system and control method for an energy storage device suitable for high-salt and high-humidity environments
By combining air-cooled and liquid-cooled heat dissipation devices with a desalination filter, the corrosion problem of energy storage devices in high-salt and high-humidity environments has been solved, achieving effective heat dissipation and protection, and extending the equipment's lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CLEAN ENERGY BRANCH OF CNOOC ENERGY DEV CO LTD
- Filing Date
- 2026-03-09
- Publication Date
- 2026-05-29
AI Technical Summary
In high-salt and high-humidity environments, during the heat dissipation process of ship energy storage devices, salt spray and humidity can cause device corrosion and shorten service life, and existing air-cooling technology cannot effectively solve this problem.
The thermal management system, which combines air-cooled and liquid-cooled heat dissipation devices, includes a desalination filter, a sealed air valve, and an electrical control box. The desalination filter filters out salt mist and humidity from the air, and the liquid cooling system dissipates heat from the battery pack. The sealed air valve prevents the entry of high-salt and high-humidity external air when the system is shut down.
It effectively avoids the corrosion of internal components of the energy storage device by salt spray and humidity, extends the service life of the equipment, and improves heat dissipation efficiency and protection effect.
Smart Images
Figure CN122118181A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of marine equipment heat dissipation technology, and in particular to a thermal management system and control method for energy storage devices suitable for high-salt and high-humidity environments. Background Technology
[0002] The air at sea contains a large amount of salty water vapor, collectively known as salt spray. When energy storage devices such as shipboard energy storage units are operating, their core components continuously generate significant heat. To address this heat dissipation requirement, the industry conventionally uses air cooling. However, during air cooling, a large amount of outdoor air containing salt spray enters the unit along with the cooling airflow. Salt spray significantly accelerates the corrosion rate of metal components, leading to premature failure. Furthermore, salt spray severely damages the insulation performance of electrical components and corrodes their internal metal structures, drastically shortening their lifespan. Simultaneously, high humidity is also a significant environmental factor inducing corrosion or aging of critical components in energy storage devices.
[0003] Therefore, there is an urgent need to design a heat dissipation technology solution for energy storage devices that can avoid the effects of salt spray and humidity. Summary of the Invention
[0004] The purpose of this invention is to provide a thermal management system and control method for energy storage devices suitable for high-salt and high-humidity environments, so as to solve the problems existing in the prior art and avoid corrosion of internal components of the cabinet by salt spray and humidity during the heat dissipation process of the energy storage device.
[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides a thermal management system for energy storage devices suitable for high-salt and high-humidity environments, comprising: Cabinet; The air-cooled heat dissipation device includes an air inlet and an air outlet located on different sides of the cabinet. The air inlet is equipped with a desalination filter, which can desalinate and dehumidify the air entering the cabinet. The air outlet is equipped with a sealed air valve, which can close or open the air outlet. The air outlet is connected to an exhaust fan. A liquid cooling heat dissipation device includes a cooling component, a circulation pipeline and a circulation pump. The circulation pipeline connects the battery pack cooling chamber inside the cabinet to the cooling component. The circulation pump can drive the coolant to circulate between the cooling component and the battery pack cooling chamber through the circulation pipeline. The electrical control box is used to control the start and stop of the exhaust fan and the circulating pump, as well as the opening and closing of the airtight valve.
[0006] Preferably, the desalination filter includes a gas-liquid separator, a primary filter, and a secondary filter; the gas-liquid separator is located on the surface of the air inlet to isolate seawater or rainwater; the primary filter is connected to the inside of the gas-liquid separator to filter moisture in the air and to perform preliminary filtration of salt in the air; the secondary filter is connected to the side of the primary filter away from the gas-liquid separator to filter moisture in the air and to perform secondary filtration of salt in the air.
[0007] Preferably, the air outlet is provided with a rainproof louver, and the airtight valve is located between the rainproof louver and the exhaust fan.
[0008] Preferably, the rainproof louver includes a window slat and an insect screen; the window slat is disposed inside the air outlet and is tilted at a 45° angle to prevent sea breezes from carrying rainwater or seawater into the cabinet; the insect screen is disposed on the outer surface of the air outlet to prevent insects or dust from entering the cabinet.
[0009] Preferably, the airtight valve includes a housing, blades, a rotating shaft, and an electric actuator. The housing is fixedly and sealed between the rainproof louver and the exhaust fan. The rotating shaft passes through the housing, and multiple blades are located inside the housing and connected to the rotating shaft. The electric actuator is connected to one end of the rotating shaft and is used to receive instructions from the electrical control box to drive the rotating shaft to rotate, thereby controlling the opening and closing of the blades. When the blades are closed, they can seal the housing, so that the rainproof louver and the exhaust fan are not connected.
[0010] Preferably, one end of the rotating shaft is connected to a hexagonal crank for manually driving the rotating shaft to control the opening or closing of the blades.
[0011] Preferably, the desalination filter is equipped with a differential pressure transmitter; the two probes of the differential pressure transmitter are respectively connected to the front end of the primary filter near the gas-liquid separator and the rear end of the intermediate filter. The two probes collect the pressure value at their respective locations and transmit the pressure value to the electrical control box; the electrical control box can receive the pressure value transmitted by the differential pressure transmitter, calculate the difference between the pressure values before and after, and compare the calculated differential pressure value with a preset threshold. If the differential pressure value exceeds the preset threshold, the user is reminded to replace the filter element of the desalination filter.
[0012] Preferably, the cooling assembly includes a water tank, a compressor, and a condenser, wherein the water tank stores coolant; the circulation pump drives the coolant to circulate between the water tank and the battery pack cooling chamber via the circulation pipeline; and the compressor and condenser are used to cool the coolant in the water tank.
[0013] Preferably, the circulation pipeline includes an inlet circuit and an outlet circuit; the inlet circuit includes a primary inlet pipe, a secondary inlet pipe, and multiple tertiary inlet pipes; the outlet circuit includes a primary outlet pipe, a secondary outlet pipe, and multiple tertiary outlet pipes; one end of the primary inlet pipe and one end of the primary outlet pipe are respectively connected to the water storage tank, and the circulation pump is provided at the connection point; the other end of the primary inlet pipe is connected to the secondary inlet pipe, the other end of the primary outlet pipe is connected to the secondary outlet pipe, the side wall of the secondary inlet pipe is connected to multiple tertiary inlet pipes, and the side wall of the secondary outlet pipe is connected to multiple tertiary outlet pipes; the ends of the tertiary inlet pipes are respectively connected to the water nozzles at the inlet end of the battery pack cooling chamber, and the tertiary outlet pipes are respectively connected to the water nozzles at the outlet end of the battery pack cooling chamber.
[0014] The present invention also provides a control method for a thermal management system of an energy storage device suitable for high-salt and high-humidity environments as described above, comprising the following steps: The electrical control box controls the start of the electric actuator of the sealed air valve, and the electric actuator controls the opening of the blades of the sealed air valve. When the sealed air valve blades open, the electrical control box controls the exhaust fan to work; After the exhaust fan and the airtight valve are both opened, the sea breeze carrying rain or seawater enters through the air inlet. The gas-liquid separator of the desalination filter isolates the seawater or rainwater carried in the air. Then, the air passes through the primary filter to pre-filter the moisture and salt in the air. The air then passes through the intermediate filter to perform a second filtration of the air filtered by the primary filter, so as to filter out the moisture and salt in the air. The differential pressure transmitter installed on the desalination filter collects the pressure values at the positions before and after the primary and intermediate filters and transmits the pressure values to the electrical control box. The control box receives the pressure value transmitted by the differential pressure transmitter, calculates the difference between the pressure values before and after, and compares the calculated differential pressure value with a preset threshold. If the differential pressure value exceeds the preset threshold, the control box controls the red indicator light on the control box to flash to remind the user to replace the filter element. The filtered air enters the air duct to dissipate heat from the various components inside the cabinet; The air carrying the heat of the components is discharged from the cabinet through a sealed air valve, an exhaust fan and an air outlet to dissipate heat from the components inside the cabinet. While the electric actuator of the sealed air valve is started by the control box, the circulating pump is also controlled to work, which transfers the coolant in the water tank to the water inlet circuit. The coolant enters the battery pack through the water inlet circuit to dissipate heat from the battery pack. The coolant carrying heat flows back to the storage tank through the outlet circuit, while the compressor and condenser cool the coolant in the storage tank.
[0015] The present invention achieves the following technical effects compared to the prior art: This invention employs both air-cooled and liquid-cooled heat dissipation devices, enabling separate heat dissipation for the battery pack and other components within the integrated marine energy storage cabinet, thereby achieving thermal management within the cabinet. A desalination filter removes salt and moisture from the air entering the cabinet, preventing damage to the components from salt mist and humidity. A sealed air valve is installed at the air outlet, allowing for opening or closing of the outlet. When the system is shut down, the valve closes, preventing high-salt, high-humidity air from the sea surface from entering the integrated marine energy storage cabinet, further enhancing its protective function. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a cross-sectional schematic diagram of the thermal management system of an energy storage device suitable for high-salt and high-humidity environments in one or more embodiments of the present invention. Figure 2 This is a cross-sectional schematic diagram of the air-cooled heat dissipation device of the thermal management system of an energy storage device suitable for high-salt and high-humidity environments in one or more embodiments of the present invention. Figure 3 This is a cross-sectional view of the air-cooled heat dissipation device of the thermal management system of the energy storage device suitable for high-salt and high-humidity environments in one or more embodiments of the present invention. Figure 4 This is a left view of the cabinet of a thermal management system for an energy storage device suitable for high-salt and high-humidity environments, as shown in one or more embodiments of the present invention. Figure 5 This is a schematic diagram of the circulation pipeline of a thermal management system for an energy storage device suitable for high-salt and high-humidity environments, as shown in one or more embodiments of the present invention.
[0018] In the diagram: 1-Cabinet, 2-Battery pack, 3-Circulation pipeline, 301-Primary water inlet pipeline, 302-Secondary water inlet pipeline, 303-Tertiary water inlet pipeline, 304-Primary water outlet pipeline, 305-Secondary water outlet pipeline, 306-Tertiary water outlet pipeline, 4-Cooling components, 5-Air inlet, 6-Air outlet, 7-Exhaust fan, 8-Desalination filter, 9-Sealed air valve. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] The purpose of this invention is to provide a thermal management system and control method for energy storage devices suitable for high-salt and high-humidity environments, so as to solve the problems existing in the prior art and avoid corrosion of internal components of the cabinet by salt spray and humidity during the heat dissipation process of the energy storage device.
[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0022] A marine energy storage unit is an integrated electrical energy storage system primarily used for storing and managing electrical energy on board a ship. It mainly includes a battery pack for storing electrical energy; a battery management system responsible for monitoring battery parameters such as voltage, temperature, and current, managing battery charging and discharging to prevent overcharging and over-discharging, extending battery life, and ensuring safe battery operation; and a power conversion system that converts the direct current (DC) power from the battery pack into alternating current (AC) power to meet the power needs of various equipment on board. Currently, when using air cooling to dissipate heat from marine energy storage units, the salt spray and humidity in the sea air can corrode the internal equipment of the unit or other energy storage devices.
[0023] To address this problem, the present invention provides a thermal management system for energy storage devices suitable for high-salt and high-humidity environments, referencing... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the device includes a cabinet 1 for integrated marine energy storage, an air-cooled heat dissipation device, a liquid-cooled heat dissipation device, and an electrical control box. The air-cooled heat dissipation device includes air inlets 5 and outlets 6 located on different sides of the cabinet 1. A desalination filter 8 is installed at the air inlet 5 to desalinate and dehumidify the air entering the cabinet 1. A sealed air valve 9 is installed at the air outlet 6 to close or open the air outlet 6. The air outlet 6 is connected to an exhaust fan 7. The air inlet 5 is located at the lower part of the cabinet 1, and the air outlet 6 is located at the upper part of the cabinet 1, further increasing the flow path of cooling air in the cabinet 1 and improving the cooling effect. The liquid-cooled heat dissipation device includes a cooling component 4, a circulation pipeline 3, and a circulation pump. The circulation pipeline 3 connects the cooling chamber of the battery pack 2 in the cabinet 1 to the cooling component 4. The circulation pump drives the coolant to circulate between the cooling component 4 and the cooling chamber of the battery pack 2 through the circulation pipeline 3. The electrical control box is used to control the start and stop of the exhaust fan 7 and the circulation pump, as well as the opening and closing of the sealed air valve 9. This invention employs both air-cooled and liquid-cooled heat dissipation devices, which can dissipate heat from the battery pack 2 and other components inside the integrated energy storage cabinet, thereby achieving thermal management within the integrated energy storage cabinet. The desalination filter 8 can desalinate and dehumidify the air entering the cabinet 1, preventing salt mist and humidity in the air from damaging the components inside the integrated energy storage cabinet. A sealed air valve 9 is provided at the air outlet 6, which can close or open the air outlet 6. When the machine is stopped, the sealed air valve 9 is closed, which can prevent high-salt and high-humidity air from the sea surface from entering the integrated energy storage cabinet, further improving the protection of the integrated energy storage cabinet.
[0024] In one embodiment, the desalination filter 8 includes a gas-liquid separator, a primary filter, and a secondary filter. The gas-liquid separator is made of ultra-low carbon austenitic stainless steel. The primary filter is a G4-grade pre-filter, which uses non-woven fabric, glass fiber, etc. as filter media and can effectively intercept medium-sized particles such as dust, pollen, and fibers. The secondary filter is an F8 filter, which typically uses ultra-fine synthetic antistatic fibers, non-woven antistatic cotton, or glass fiber as filter media. The gas-liquid separator is located on the surface of the air inlet 5 to isolate seawater or rainwater. The primary filter is connected to the inside of the gas-liquid separator to filter moisture in the air and to perform preliminary filtration of salt in the air. The secondary filter is connected to the side of the primary filter away from the gas-liquid separator to filter moisture in the air and to perform secondary filtration of salt in the air. By filtering the high-salt, high-humidity air multiple times, the external air used for heat dissipation inside the cabinet 1 is reduced to a lower salt content to ensure that the components inside the cabinet 1 are not corroded under normal natural air cooling conditions.
[0025] To improve filtration efficiency and facilitate timely filter replacement, in one embodiment, the desalination filter 8 is equipped with a differential pressure transmitter. The two probes of the differential pressure transmitter are respectively connected to the front end of the primary filter near the gas-liquid separator and the rear end of the intermediate filter. The two probes collect the pressure value at their respective locations and transmit the pressure value to the electrical control box. The electrical control box can receive the pressure value transmitted by the differential pressure transmitter, calculate the difference between the pressure values before and after, and compare the calculated differential pressure value with a preset threshold. If the differential pressure value exceeds the preset threshold, the user is reminded to replace the filter element of the desalination filter 8.
[0026] In one embodiment, a rainproof louver is provided at the air outlet 6, and a sealed air valve 9 is located between the rainproof louver and the exhaust fan 7. The rainproof louver includes a slat and an insect screen. The shell thickness of the rainproof louver is 2mm, and the slat adopts a blade structure with a thickness of 2mm to ensure that the overall structure does not deform. The slat is set inside the air outlet 6 and is tilted at a 45° angle to prevent rainwater or seawater carried by sea breeze from entering the cabinet 1. The insect screen is set on the outer surface of the air outlet 6 to prevent insects or dust from entering the cabinet 1. The airtight valve 9 in this embodiment includes a housing, blades, a rotating shaft, and an electric actuator. The housing is fixedly and sealed between the rainproof louver and the exhaust fan 7. The rotating shaft passes through the housing, and multiple blades are located inside the housing and connected to the rotating shaft. The blades are arranged in an overlapping manner or are abutted by leak-proof sealing gaskets to ensure that the blades are tightly closed and do not allow light to pass through. The electric actuator is connected to one end of the rotating shaft and is used to receive instructions from the electrical control box to drive the rotating shaft to rotate, thereby controlling the opening and closing of the blades. When the blades are closed, they can seal the housing, so that there is no communication between the rainproof louver and the exhaust fan 7. In a preferred embodiment, a hexagonal handle is connected to one end of the rotating shaft for manually driving the rotating shaft to manually control the opening or closing of the blades in an emergency.
[0027] In one embodiment, the cooling component 4 of the liquid cooling heat dissipation device includes a water tank, a compressor, and a condenser. The water tank stores coolant. A circulation pump drives the coolant to circulate between the water tank and the cooling chamber of the battery pack 2 via a circulation pipeline 3. The compressor and condenser are used to cool the coolant in the water tank. The circulation pipeline 3 includes an inlet circuit and an outlet circuit. The inlet circuit includes a primary inlet pipeline 301, a secondary inlet pipeline 302, and multiple tertiary inlet pipelines. The outlet circuit includes a primary outlet pipeline 304, a secondary outlet pipeline 305, and multiple tertiary outlet pipelines 306. One end of the primary inlet pipeline 301 and one end of the primary outlet pipeline 304 are respectively connected to the water tank, and a circulation pump is provided at the connection point. The other end of the primary inlet pipeline 301 is connected to two... The first-stage inlet pipe 302 and the first-stage outlet pipe 304 are connected at one end to the second-stage outlet pipe 305. Multiple tertiary inlet pipes 303 and 306 are connected to the side wall of the second-stage inlet pipe 302. The ends of the tertiary inlet pipes 303 are connected to the water inlets of the cooling chamber of the battery pack 2 via connectors, and the tertiary outlet pipes 306 are connected to the water outlets of the cooling chamber of the battery pack 2 via connectors. Coolant can be dispersed into the cooling chamber of the battery pack 2 via the first-stage inlet pipe 301, the second-stage inlet pipe 302, and the multiple tertiary inlet pipes, thereby achieving water-cooled heat dissipation of the battery pack 2. After heat dissipation, the coolant returns to the storage tank via the multiple tertiary outlet pipes 306, the second-stage outlet pipe 305, and the first-stage outlet pipe 304, where it is cooled by the compressor and condenser, thus achieving cyclic cooling of the coolant.
[0028] The present invention also provides a control method for a thermal management system of an energy storage device suitable for high-salt and high-humidity environments, comprising the following steps: The electrical control box controls the start of the electric actuator of the sealed air valve 9, and the electric actuator controls the opening of the blades of the sealed air valve 9; When the blades of the airtight damper 9 are opened, the electrical control box controls the exhaust fan 7 to work; After both the exhaust fan 7 and the airtight valve 9 are opened, the sea breeze carrying rainwater or seawater enters through the air inlet 5. The gas-liquid separator of the desalination filter 8 isolates the seawater or rainwater carried in the wind. Then, the primary filter performs preliminary filtration of the moisture and salt in the wind. The secondary filter performs secondary filtration of the wind after the primary filter to remove the moisture and salt in the wind. The differential pressure transmitter installed on the desalination filter 8 collects the pressure values at the positions before and after the primary and intermediate filters and transmits the pressure values to the electrical control box. The control box receives the pressure value transmitted by the differential pressure transmitter, calculates the difference between the pressure values before and after, and compares the calculated differential pressure value with a preset threshold. If the differential pressure value exceeds the preset threshold, the control box controls the red indicator light on the control box to flash to remind the user to replace the filter element. The filtered air enters the air duct to dissipate heat from the various components inside cabinet 1; The air carrying the heat of the components is discharged outside the cabinet 1 through the sealed air valve 9, the exhaust fan 7 and the air outlet 6 to achieve heat dissipation of the components inside the cabinet 1. While the electric control box controls the start of the electric actuator of the sealed air valve 9, it also controls the operation of the circulating pump to transfer the coolant in the water storage tank to the water inlet circuit. The coolant enters the battery pack 2 through the water inlet circuit to dissipate heat from the battery pack 2. The coolant carrying heat flows back to the storage tank through the outlet circuit, while the compressor and condenser cool the coolant in the storage tank.
[0029] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.
Claims
1. A thermal management system for an energy storage device suitable for high-salt and high-humidity environments, characterized in that: include: Cabinet; The air-cooled heat dissipation device includes an air inlet and an air outlet located on different sides of the cabinet. The air inlet is equipped with a desalination filter, which can desalinate and dehumidify the air entering the cabinet. The air outlet is equipped with a sealed air valve, which can close or open the air outlet. The air outlet is connected to an exhaust fan. A liquid cooling heat dissipation device includes a cooling component, a circulation pipeline and a circulation pump. The circulation pipeline connects the battery pack cooling chamber inside the cabinet to the cooling component. The circulation pump can drive the coolant to circulate between the cooling component and the battery pack cooling chamber through the circulation pipeline. The electrical control box is used to control the start and stop of the exhaust fan and the circulating pump, as well as the opening and closing of the airtight valve.
2. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 1, characterized in that: The desalination filter includes a gas-liquid separator, a primary filter, and a secondary filter. The gas-liquid separator is located on the surface of the air inlet and is used to isolate seawater or rainwater. The primary filter is connected to the inside of the gas-liquid separator and is used to filter moisture in the air and perform preliminary filtration of salt in the air. The secondary filter is connected to the side of the primary filter away from the gas-liquid separator and is used to filter moisture in the air and perform secondary filtration of salt in the air.
3. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 1, characterized in that: The air outlet is equipped with a rainproof louver, and the airtight valve is located between the rainproof louver and the exhaust fan.
4. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 3, characterized in that: The rainproof louver includes a slat and an insect screen; the slat is located inside the air outlet and is tilted at a 45° angle to prevent rainwater or seawater carried by sea breeze from entering the cabinet; the insect screen is located on the outer surface of the air outlet to prevent insects or dust from entering the cabinet.
5. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 3, characterized in that: The airtight valve includes a housing, blades, a rotating shaft, and an electric actuator. The housing is fixedly and sealed between the rainproof louver and the exhaust fan. The rotating shaft passes through the housing, and multiple blades are located inside the housing and connected to the rotating shaft. The electric actuator is connected to one end of the rotating shaft and is used to receive instructions from the electrical control box to drive the rotating shaft to rotate, thereby controlling the opening and closing of the blades. When the blades are closed, they can seal the housing, so that the rainproof louver and the exhaust fan are not connected.
6. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 5, characterized in that: One end of the rotating shaft is connected to a hexagonal crank handle for manually driving the rotating shaft to control the opening or closing of the blades.
7. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 2, characterized in that: The desalination filter is equipped with a differential pressure transmitter. The two probes of the differential pressure transmitter are respectively connected to the front end of the primary filter near the gas-liquid separator and the rear end of the intermediate filter. The two probes collect the pressure value at their respective locations and transmit the pressure value to the electrical control box. The electrical control box can receive the pressure value transmitted by the differential pressure transmitter, calculate the difference between the pressure values before and after, and compare the calculated differential pressure value with a preset threshold. If the differential pressure value exceeds the preset threshold, the user is reminded to replace the filter element of the desalination filter.
8. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 1, characterized in that: The cooling assembly includes a water tank, a compressor, and a condenser. The water tank stores coolant. The circulation pump drives the coolant to circulate between the water tank and the battery pack cooling chamber via the circulation pipeline. The compressor and condenser are used to cool the coolant in the water tank.
9. The thermal management system for energy storage devices suitable for high-salt and high-humidity environments according to claim 8, characterized in that: The circulation pipeline includes an inlet circuit and an outlet circuit; the inlet circuit includes a primary inlet pipe, a secondary inlet pipe, and multiple tertiary inlet pipes; the outlet circuit includes a primary outlet pipe, a secondary outlet pipe, and multiple tertiary outlet pipes; one end of the primary inlet pipe and one end of the primary outlet pipe are respectively connected to the water storage tank, and the circulation pump is installed at the connection point; the other end of the primary inlet pipe is connected to the secondary inlet pipe, the other end of the primary outlet pipe is connected to the secondary outlet pipe, multiple tertiary inlet pipes are connected to the side wall of the secondary inlet pipe, and multiple tertiary outlet pipes are connected to the side wall of the secondary outlet pipe; the ends of the tertiary inlet pipes are respectively connected to the water nozzles at the inlet end of the battery pack cooling chamber, and the tertiary outlet pipes are respectively connected to the water nozzles at the outlet end of the battery pack cooling chamber.
10. A control method for a thermal management system of an energy storage device suitable for high-salt and high-humidity environments as described in any one of claims 1 to 9, characterized in that: Includes the following steps: The electrical control box controls the start of the electric actuator of the sealed air valve, and the electric actuator controls the opening of the blades of the sealed air valve. When the sealed air valve blades open, the electrical control box controls the exhaust fan to work; After the exhaust fan and the airtight valve are both opened, the sea breeze carrying rain or seawater enters through the air inlet. The gas-liquid separator of the desalination filter isolates the seawater or rainwater carried in the air. Then, the air passes through the primary filter to pre-filter the moisture and salt in the air. The air then passes through the intermediate filter to perform a second filtration of the air filtered by the primary filter, so as to filter out the moisture and salt in the air. The differential pressure transmitter installed on the desalination filter collects the pressure values at the positions before and after the primary and intermediate filters and transmits the pressure values to the electrical control box. The control box receives the pressure value transmitted by the differential pressure transmitter, calculates the difference between the pressure values before and after, and compares the calculated differential pressure value with a preset threshold. If the differential pressure value exceeds the preset threshold, the control box controls the red indicator light on the control box to flash to remind the user to replace the filter element. The filtered air enters the air duct to dissipate heat from the various components inside the cabinet; The air carrying the heat of the components is discharged from the cabinet through a sealed air valve, an exhaust fan and an air outlet to dissipate heat from the components inside the cabinet. While the electric actuator of the sealed air valve is started by the control box, the circulating pump is also controlled to work, which transfers the coolant in the water tank to the water inlet circuit. The coolant enters the battery pack through the water inlet circuit to dissipate heat from the battery pack. The coolant carrying heat flows back to the storage tank through the outlet circuit, while the compressor and condenser cool the coolant in the storage tank.