Marine battery container system with environmental control system and control method thereof

Abstract

The present invention provides a ship battery container system with an environmental control system and a control method thereof, wherein the system comprises: at least one ship battery container with an environmental control system, the ship battery container with the environmental control system comprises a container body, and a circulating air and fresh air subsystem, a cold water subsystem, an emergency ventilation subsystem and a control system fixed in the container body; the circulating air and fresh air subsystem, the cold water subsystem, and the emergency ventilation subsystem are connected to the control system; the control system is arranged in or partially arranged in an energy storage unit placement area in the container body. The ship battery container system with an environmental control system and a control method thereof of the present invention can realize the battery cooling and internal environment control functions of the battery container under various working conditions of charging, discharging, transporting, and storing, improve the reliability of battery operation, extend the service life of the battery, simplify the operation, and have high safety.

Description

Technical Field

[0001] The present invention relates to the field of energy storage equipment, and in particular to a marine battery container system with an environmental control system and a control method thereof. Background Art

[0002] Box-type energy storage units that place lithium batteries in containers have been widely used on land. As battery technology becomes more mature, such box-type battery units can be used in the ship field as the ship's main power source or energy storage device to achieve clean ship power.

[0003] To achieve safe and efficient use of box-type battery units, we must first pay attention to the effective thermal management of lithium batteries: lithium batteries will generate a lot of heat during the charging and discharging process, and timely heat exchange is required to control the temperature of the lithium battery itself; secondly, we must pay attention to controlling the environmental conditions of the lithium battery to avoid the lithium battery being in an over-cold or over-heated environment that affects the battery life; finally, when the lithium battery has thermal runaway, it will release a large amount of flammable gas. The place where the lithium battery is located should have the function of emergency degassing when such a situation occurs, so as to avoid combustion and explosion, which may lead to an uncontrollable situation.

[0004] Compared with land-based energy storage containers, the application of marine battery containers should further consider special requirements in combination with the more special application scenario of ships when considering the above requirements. The layout space of the ship itself is limited. To achieve the purpose of being used as the main power source, the compactness of the internal layout of the battery container must be improved as much as possible. If necessary, the close arrangement or even stacking of multiple battery containers should be considered to carry as much electricity as possible. This requires that the auxiliary systems and equipment inside the marine battery container take up as little space as possible, and there should be no protruding equipment or accessories on the outside of the container to avoid affecting the close arrangement. In addition, unlike the land-based energy storage containers that continue to operate after installation, ships that use battery containers as power usually adopt a battery replacement mode. Therefore, marine battery containers are also faced with transshipment between ships and shores and storage conditions on shore (such as docks). In such transshipment and storage conditions, the battery container itself does not work, but because the container itself is a closed environment, the radiant heat of the external environment will cause the temperature inside the container to continue to rise, so the environment inside the container still needs to be controlled to avoid the external environment (mainly high temperature) affecting the battery life.

[0005] In the prior art, there are two methods for controlling the temperature of lithium batteries: liquid cooling and air cooling (natural cooling). The liquid cooling system is relatively complex, and because the battery itself will deform due to long-term use, the liquid cooling device will be separated from the heat exchange surface of the battery and lose the cooling effect, so this system is rarely used. The air cooling system is usually implemented by industrial air conditioners and air ducts arranged in the energy storage container. By adopting the air cooling system, it is possible to cool the battery itself and control the environment of the lithium battery location, i.e., the container. For example, patents CN 209913535 U, CN 211090461 U, CN 210838023U, and CN 211150627 U all disclose systems and energy storage containers that use air conditioners for cooling and environmental control.

[0006] In the prior art, for the air conditioning system serving the battery container, more attention is paid to the effectiveness of the airflow organization during operation, and attempts are made to improve the air cooling efficiency by setting up different forms of heat dissipation ducts such as top air supply and wind wall (for example, patents CN210838023 U and CN 211150627 U). Since these technologies are mostly used for land-based energy storage containers, or their technologies are applied to ships using the same solutions as land-based ones, there is little consideration of the requirements for the space inside and outside the container and the requirements for transshipment and storage in ship application scenarios, and no special technical solutions have been proposed to address them.

[0007] In the prior art, the air conditioning system and ventilation system serving the battery container are usually independent systems, and the equipment configuration, layout and control system usually need to be set up separately, which does not form an integrated system and does not have linkage and centralized control functions.

[0008] The air conditioners configured for energy storage containers in the prior art are generally integrated air conditioning cabinets or split air conditioning cabinets. If the integrated air conditioning cabinet is water-cooled, it needs to rely on external cooling water. When there is no cooling water provided externally (for example, when the container needs to be transshipped or stored at the dock), the air conditioning system inside the container cannot work, which may cause the internal ambient temperature to rise and affect the battery life. If the integrated air conditioning cabinet is air-cooled, it is necessary to set a larger cooling fan opening on the outer wall of the container, which will affect the overall fireproof performance of the container, and it is easily affected by bad weather and cannot work normally. If you consider putting an integrated air-cooled cabinet into operation to control the ambient temperature inside the container during transshipment or storage at the dock, it will generate large power consumption, which is difficult to achieve in the absence of an external power supply.

[0009] The integrated air conditioner cabinet is large in size and occupies a lot of space inside the container, which affects the density of the battery pack. Some technical solutions (such as patent CN 210838023 U) install the integrated air conditioner on the top of the container to save space inside the container, resulting in protrusions on the outside of the container, making it impossible to stack multiple containers.

[0010] If a split-type air-conditioning cabinet is adopted (such as patent CN 211090461 U), an air-conditioning outdoor unit needs to be installed outside the container, resulting in protrusions outside the container, making it impossible to achieve a compact arrangement of multiple containers.

[0011] The existing technical solution is to equip the energy storage container with an integrated or split air-conditioning cabinet. Each energy storage container needs to be equipped with an air conditioner that meets its maximum operating conditions. If multiple containers are configured but not all containers are running at full load, the total power of the installed air conditioners will be redundant, resulting in increased costs. Summary of the invention

[0012] In view of the deficiencies in the above-mentioned prior art, the present invention provides a marine battery container system with an environmental control system and a control method thereof, which can realize the battery cooling and internal environment control functions of the battery container under various working conditions such as charging, discharging, transportation and storage, thereby improving the reliability of battery operation and extending the service life of the battery; it can realize the effective utilization of the internal space of the container, improve the energy density of a single container, and realize the close arrangement or stacking of multiple containers to maximize the available power in a limited space; it can reduce the total capacity of the refrigeration system when multiple containers are used together, thereby realizing cost savings; it can realize centralized control of various working conditions such as charging, discharging, transportation, storage and air conditioning and ventilation components under emergency conditions, simplify operation, and improve reliability and safety.

[0013] In order to achieve the above-mentioned purpose, the present invention provides a ship battery container system with an environmental control system, comprising at least one ship battery container with an environmental control system, wherein the ship battery container with an environmental control system comprises a container body, and a circulating air fresh air subsystem, a cold water subsystem, an emergency ventilation subsystem and a control system fixed in the container body; the circulating air fresh air subsystem comprises an air inlet duct, a refrigeration air duct, a return air louver, a fresh air louver, a circulating fan, an air supply duct, an air supply air valve, a main air duct and a ventilation louver; the air inlet duct is connected to the refrigeration air duct, the return air louver and the fresh air louver, the return air louver can communicate the interior of the air inlet duct with the interior of the container body, and the fresh air louver can communicate the interior of the air inlet duct with the interior of the container The outside of the container body; the circulating fan is arranged in the refrigeration air duct; the supply air duct is connected between the refrigeration air duct and the main air duct, and the main air duct includes a plurality of air outlets; the ventilation shutters are fixed to the side wall of the container body and can connect the inside and outside of the container body; the cold water subsystem is connected to the container body and partially extends into the refrigeration air duct; the emergency ventilation subsystem is connected to the main air duct and the container body; the return air shutters, the fresh air shutters and the ventilation shutters are electric shutters; the control system is arranged in or partially arranged in an energy storage unit placement area in the container body, and the control system is connected to the return air shutters, the fresh air shutters, the circulating fan, the supply air valve, the ventilation shutters, the cold water subsystem and the emergency ventilation subsystem.

[0014] Preferably, the container body forms or forms part of the air inlet duct, the refrigeration duct and the main duct.

[0015] Preferably, the air inlet duct is located at the bottom of the front end of the container body; the refrigeration air duct is connected to the top of the air inlet duct, and at least one opening is formed at the connection between the refrigeration air duct and the air inlet duct; the main air duct is arranged along the length direction of the container body and is located at the top of the container body.

[0016] Preferably, the cold water subsystem includes: a cold water interface, a low-temperature cold water supply pipe, a low-temperature cold water return pipe, a cold water supply switching valve, a cold water return switching valve, a temperature-controlled three-way valve, a cold water bypass pipe, a cold water coil, a high-temperature cold water supply pipe, a high-temperature cold water return pipe, a high-temperature cold water circulation pump and a cold water storage tank; the cold water interface is connected to the low-temperature cold water supply pipe and the low-temperature cold water return pipe; the two inlets of the cold water supply switching valve are respectively connected to the low-temperature cold water supply pipe and the high-temperature cold water supply pipe; the inlet of the temperature-controlled three-way valve is connected to the outlet of the cold water supply switching valve, and the two outlets of the temperature-controlled three-way valve are respectively connected to The inlet of the cold water bypass pipe and the inlet of the cold water coil; the inlet of the cold water return switching valve is connected to the cold water bypass pipe and the outlet of the cold water coil, one outlet of the cold water return switching valve is connected to the high-temperature cold water return pipe, and the other outlet of the cold water return switching valve is connected to the low-temperature cold water return pipe; the high-temperature cold water circulation pump is installed on the high-temperature cold water supply pipe; the cold water storage tank is connected to the high-temperature cold water supply pipe and the high-temperature cold water return pipe; the cold water coil is arranged in the refrigeration air duct; the cold water supply switching valve, the cold water return switching valve, the temperature control three-way valve and the high-temperature cold water circulation pump are connected to the control system.

[0017] Preferably, the emergency ventilation subsystem includes an exhaust duct, an exhaust air valve and an exhaust fan; the exhaust duct is connected to the main air duct, and the exhaust air valve and the exhaust air fan are installed on the exhaust duct; the exhaust air valve and the exhaust air fan are connected to the control system.

[0018] Preferably, the emergency ventilation subsystem also includes an air purge shutter, which is fixed to the container body and can connect the inside and outside of the container body; the exhaust air duct is connected between the main air duct and the air purge shutter; the air purge shutter adopts the electric shutter; and the air purge shutter is connected to the control system.

[0019] Preferably, the control system includes a controller, and at least one internal power supply, an internal temperature sensor, an external temperature sensor and a combustible gas detector connected to the controller; the controller is also connected to the return air louver, the fresh air louver, the circulating fan, the air supply valve, the ventilation louver, the cold water supply switching valve, the cold water return switching valve, the temperature control three-way valve, the high-temperature cold water circulation pump, the exhaust valve, the purge fan and the purge louver.

[0020] Preferably, it further comprises an external refrigeration device, which is connected to the cold water interfaces of all the marine battery containers with environmental control systems.

[0021] Preferably, the return air louvers, the fresh air louvers, the ventilation louvers and the air purge louvers are explosion-proof electric louvers; the circulation fan is an explosion-proof electric centrifugal fan; the air supply valve and the exhaust air valve are explosion-proof electric valves; the air purge fan is an explosion-proof electric fan; and the internal temperature sensor is an explosion-proof temperature sensor.

[0022] The present invention provides a control method for a marine battery container system with an environmental control system according to the present invention, comprising the steps of:

[0023] S1: Preset multiple working modes in the controller, the working modes including: normal operation mode, standby mode, emergency mode and fire mode;

[0024] S2: Selecting one of the working modes as the current working mode;

[0025] S3: the controller runs the current working mode; the controller obtains the combustible gas concentration in the container in real time through the combustible gas detector;

[0026] S4: When the current working mode is neither the emergency state mode nor the fire mode and the combustible gas concentration is greater than a preset value, the current working mode is switched to the emergency state mode, and the controller operates the emergency state mode; when the controller receives a fire alarm signal from the fire alarm system, the current working mode is switched to the fire state mode, and the controller operates the fire state mode;

[0027] When the controller runs the normal operating mode, the controller controls the cold water supply switching valve, the cold water return switching valve and the temperature control three-way valve, so that the low-temperature cold water supply pipe, the cold water coil and the low-temperature cold water return pipe are connected; the controller controls the high-temperature cold water circulation pump to be turned off, the return air louver to be opened, the fresh air louver to be closed, the circulation fan to be operated, the supply air valve to be opened, the ventilation louver to be closed, the exhaust air valve to be closed, the purge fan to be turned off and the purge louver to be closed;

[0028] The standby mode includes an external high temperature standby sub-mode and an external low temperature standby sub-mode; when the controller runs the standby mode, the controller obtains the internal temperature T1 inside the container body through the internal temperature sensor, and obtains the external temperature T2 outside the container body through the external temperature sensor, and sets a target temperature T0 inside the container body through the controller;

[0029] When the temperature inside the box T1 and the temperature outside the box T2 are both higher than the target temperature T0, the controller runs the external high-temperature standby sub-mode; the controller controls the cold water supply switching valve, the cold water return switching valve and the temperature control three-way valve, so that the cold water storage tank, the high-temperature cold water supply pipe, the cold water coil and the high-temperature cold water return pipe are connected; the controller controls the high-temperature cold water circulation pump to start, the return air louver to open, the fresh air louver to close, the circulation fan to run, the supply air valve to open, the ventilation louver to close, the exhaust air valve to close, the purge fan to close and the purge louver to close;

[0030] When the temperature inside the box T1 is higher than the target temperature T0, and the temperature outside the box T2 is lower than the target temperature T0, the controller runs the external low-temperature standby sub-mode; the controller controls the high-temperature cold water circulation pump to be turned off, the return air louver to be closed, the fresh air louver to be opened, the circulation fan to be operated, the air supply air valve to be opened, the ventilation louver to be opened, the exhaust air valve to be closed, the purge fan to be turned off, and the purge louver to be closed;

[0031] When the controller runs the emergency mode, the controller controls the high-temperature cold water circulation pump to stop, the return air louver to close, the fresh air louver to close, the circulation fan to stop, the air supply air valve to close, the ventilation louver to open, the exhaust air valve to open, the purge fan to run and the purge louver to open;

[0032] When the controller runs the fire state mode, the controller controls the cold water supply switching valve, the cold water return switching valve and the temperature control three-way valve to remain as they are; the controller controls the high-temperature cold water circulation pump to stop, the return air louver to close, the fresh air louver to close, the circulation fan to stop, the supply air valve to close, the ventilation louver to close, the exhaust air valve to remain as it is, the purge fan to stop and the purge louver to close;

[0033] The controller adjusts the opening of the temperature-controlled three-way valve to the cold water bypass pipe and the cold water coil according to the temperature in the box and the set required temperature, and then adjusts the amount of water entering the cold water coil to adjust the cooling effect.

[0034] The present invention adopts the above technical solution, so it has the following beneficial effects:

[0035] 1. The container body forms or forms part of the air inlet duct, the refrigeration duct and the main duct, so that the main components of the air conditioning system are combined with the container body and become a part of the container body, with a compact layout and effective use of space, so that more space is available for arranging batteries, thereby improving the energy density of a single container.

[0036] 2. By using the split-type equipment without protruding from the external side and top surfaces of the container body of the present invention, the containers can be closely arranged or stacked, making it feasible to arrange multiple containers in a limited space.

[0037] 3. By installing a cold water storage tank, cold water circulation pump, high-temperature cold water pipe, cold water switching valve and internal power supply inside the container, the container can rely on the internal air-conditioning system to achieve a certain degree of cooling under conditions such as transportation and storage where there is neither external refrigeration device nor external power supply, ensuring that the interior of the container can still be maintained at an appropriate temperature when the external ambient temperature is high.

[0038] 4. By setting fresh air shutters and ventilation shutters on the container body and controlling the closing of the return air shutters, the container can achieve a certain degree of cooling by relying on ventilation function under conditions such as transshipment and storage where there is neither external refrigeration device nor external power supply, ensuring that the interior of the container can be maintained at an appropriate temperature through lower power consumption when the external environmental conditions are suitable.

[0039] 5. By selecting different modes on the controller, the system automatically enters the corresponding operating state, simplifying the operation and improving the working efficiency.

[0040] 6. The present invention takes the safety of the battery container into special consideration and is provided with a purge function that can be automatically activated, and the necessary equipment is explosion-proof, which improves the safety of the battery container operation compared to conventional industrial products used in the prior art.

[0041] 7. The solution of the present invention avoids the need to separately install an industrial air conditioner in each battery container, and reduces the total refrigeration capacity configuration in scenarios where multiple containers are used together, which is beneficial to improving economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a marine battery container system with an environmental control system according to an embodiment of the present invention;

[0043] Figure 2 A state diagram of a normal operating mode of a marine battery container system with an environmental control system according to an embodiment of the present invention;

[0044] Figure 3 A state diagram of a standby mode of a marine battery container system with an environmental control system according to an embodiment of the present invention;

[0045] Figure 4 A state diagram of an emergency state mode of a marine battery container system with an environmental control system according to an embodiment of the present invention;

[0046] Figure 5 The figure is a schematic diagram of the connection structure between an external refrigeration device and a marine battery container with an environmental control system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following is based on the attached Figure 1 to Figure 5 , give the preferred embodiments of the present invention, and describe them in detail so that the functions and features of the present invention can be better understood.

[0048] See also Figure 1 A marine battery container system with an environmental control system according to an embodiment of the present invention comprises at least one marine battery container 1 with an environmental control system. The marine battery container 1 with an environmental control system comprises a container body 11, and a circulating air fresh air subsystem, a cold water subsystem, an emergency ventilation subsystem and a control system fixed in the container body 11; the circulating air fresh air subsystem comprises an air inlet duct 21, a refrigeration duct 22, a return air louver 23, a fresh air louver 24, a circulating fan 25, an air supply duct 26, an air supply valve 27, a main air duct 28 and a ventilation louver 29; the air inlet duct 21 is connected to the refrigeration duct 22, return air louvers 23 and fresh air louvers 24, the return air louvers 23 can connect the interior of the air inlet duct 21 and the interior of the container body 11, and the fresh air louvers 24 can connect the interior of the air inlet duct 21 and the outside of the container body 11; the circulating fan 25 is arranged in the refrigeration air duct 22; the air supply air duct 26 is connected between the refrigeration air duct 22 and the main air duct 28, and a plurality of air outlets are formed on the bottom and side surfaces of the main air duct 28, which are used to disperse the airflow to the energy storage unit placement area 12 where the energy storage unit is arranged to achieve the functions of cooling and environmental control. The specific shape of the main air duct 28 can be flexibly adjusted according to the internal layout of the container body 11 to achieve the purpose of fully utilizing the space. The ventilation shutters 29 are fixed to the side walls of the container body 11 and can connect the inside and outside of the container body 11; the cold water subsystem is connected to the container body 11 and partially extends into the refrigeration air duct 22; the emergency ventilation subsystem is connected to the main air duct 28 and the container body 11; the return air shutters 23, the fresh air shutters 24 and the ventilation shutters 29 are electric shutters; the control system is arranged in or partially arranged in a storage unit placement area 12 in the container body 11, and the control system is connected to the return air shutters 23, the fresh air shutters 24, the circulating fan 25, the supply air valve 27, the ventilation shutters 29, the cold water subsystem and the emergency ventilation subsystem.

[0049] The energy storage unit placement area 12 may be an area for placing lithium batteries.

[0050] The refrigerant water circulating in the cold water coil 308 exchanges heat with the air, thereby lowering the air temperature. The circulating fan 25 is used to draw air from the air inlet duct 21 into the refrigeration duct 22, and then send the air out. In this embodiment, the air first passes through the cold water coil 308 to achieve cooling, and then is sent out by the circulating fan 25. In another embodiment, the air may also first pass through the circulating fan 25, then pass through the cold water coil 308, and finally the cooled air is sent out of the refrigeration duct 22.

[0051] In this embodiment, the container body 11 forms part of the air inlet duct 21, the cooling air duct 22 and the main air duct 28, and the air inlet duct 21, the cooling air duct 22 and the main air duct 28 are made of steel instead of the part formed by the non-container body 11. The air inlet duct 21, the cooling air duct 22 and the main air duct 28 become part of the container body 11, and are arranged compactly, effectively utilizing the space, so that the space for arranging the battery is larger, thereby improving the energy density of a single container.

[0052] The air inlet duct 21 is located at the bottom of the front end of the container body 11; the cooling air duct 22 is connected to the top of the air inlet duct 21, and at least one opening is formed at the connection between the cooling air duct 22 and the air inlet duct 21 to allow air to pass through; the main air duct 28 is arranged along the length direction of the container body 11 and is located at the top of the container body 11.

[0053] The cold water subsystem includes: a cold water interface 301, a low-temperature cold water supply pipe 302, a low-temperature cold water return pipe 303, a cold water supply switching valve 304, a cold water return switching valve 305, a temperature control three-way valve 306, a cold water bypass pipe 307, a cold water coil 308, a high-temperature cold water supply pipe 309, a high-temperature cold water return pipe 310, a high-temperature cold water circulation pump 311 and a cold water storage tank 312; the cold water interface 301 is connected to the low-temperature cold water supply pipe 302 and the low-temperature cold water return pipe 303; the two inlets of the cold water supply switching valve 304 are respectively connected to the low-temperature cold water supply pipe 302 and the high-temperature cold water supply pipe 309; the inlet of the temperature control three-way valve 306 is connected to the outlet of the cold water supply switching valve 304, and the temperature control three-way valve 310 is connected to the outlet of the cold water supply switching valve 304. The two outlets of 06 are respectively connected to the inlet of the cold water bypass pipe 307 and the inlet of the cold water coil 308; the inlet of the cold water return switching valve 305 is connected to the outlet of the cold water bypass pipe 307 and the cold water coil 308, one outlet of the cold water return switching valve 305 is connected to the high-temperature cold water return pipe 310, and the other outlet of the cold water return switching valve 305 is connected to the low-temperature cold water return pipe 303; the high-temperature cold water circulation pump 311 is installed on the high-temperature cold water supply pipe 309; the cold water storage tank 312 is connected to the high-temperature cold water supply pipe 309 and the high-temperature cold water return pipe 310; the cold water coil 308 is arranged in the refrigeration air duct 22; the cold water supply switching valve 304, the cold water return switching valve 305, the temperature control three-way valve 306 and the high-temperature cold water circulation pump 311 are connected to the control system.

[0054] In this embodiment, the cold water interface 301 adopts a dry quick connector, and the side facing the outside of the container can be connected to the external refrigeration device 2. When connected, the low-temperature cold water generated by the external refrigeration device 2 will enter the low-temperature cold water supply pipe 302 inside the container body 11, and after heat exchange through the cold water coil 308, it will flow back to the external refrigeration device 2 through the low-temperature cold water return pipe 303, forming a complete low-temperature cold water cycle. When the cold water interface 301 is not connected to the external pipeline, the interface is in a blind state.

[0055] The high-temperature cold water loop formed by the high-temperature cold water supply pipe 309 and the high-temperature cold water return pipe 310 also includes a cold water storage tank 312 and a high-temperature cold water circulation pump 311. The cold water storage tank 312 and the high-temperature cold water circulation pump 311 are arranged in the frame, and the frame is fixedly connected to the container body 11. Industrial fresh water or tap water is stored in the cold water storage tank 312 and is pumped out by the high-temperature cold water circulation pump 311. When the aforementioned switching valve is switched to the high-temperature cold water loop, the high-temperature cold water circulation pump 311 allows the high-temperature cold water to enter the cold water coil 308 through the cold water supply switching valve 304, achieve heat exchange through the air, and finally return to the cold water storage tank 312. This loop is used to form a cold water circulation inside the container when there is no external low-temperature cold water access under the container transshipment and storage conditions, and use the cold water-air heat exchange to overcome the radiant heat generated by the external environment under the container transshipment and storage conditions to avoid the continuous increase in the temperature inside the container. The high temperature cold water circulation pump 311 is an electric pump, and its start and stop are controlled by the controller 51. Its power supply is provided by an external power supply or an internal power supply 52.

[0056] The temperature control three-way valve 306 is an electric three-way valve, which is controlled by the controller 51. The feedback signal comes from the internal temperature sensor 53. By changing the opening direction of the temperature control three-way valve 306 to the cold water coil 308 or to the cold water bypass pipe 307, the amount of water entering the cold water coil 308 is adjusted, thereby adjusting the cooling capacity of the circulating air system.

[0057] The emergency ventilation subsystem includes an exhaust duct 41, an exhaust valve 42 and an exhaust fan 43; the exhaust duct 41 is connected to the main air duct 28, and the exhaust valve 42 and the exhaust fan 43 are installed on the exhaust duct 41; the exhaust valve 42 and the exhaust fan 43 are connected to the control system.

[0058] The emergency ventilation subsystem also includes an air purging shutter 44, which is fixed to the container body 11 and can connect the inside and outside of the container body 11; the exhaust air duct 41 is connected between the main air duct 28 and the air purging shutter 44; the air purging shutter 44 is an electric shutter; the air purging shutter 44 is connected to the control system.

[0059] In another embodiment, the purge louver 44 may not be provided, and the purge louver 44 may be replaced by an outlet closing device provided by the purge fan 43 .

[0060] The control system includes a controller 51, and at least one internal power supply 52, an internal temperature sensor 53, an external temperature sensor 54 and a combustible gas detector 55 connected to the controller 51; the controller 51 is also connected to the return air louver 23, the fresh air louver 24, the circulating fan 25, the supply air valve 27, the ventilation louver 29, the cold water supply switching valve 304, the cold water return switching valve 305, the temperature control three-way valve 306, the high-temperature cold water circulation pump 311, the exhaust air valve 42, the purge fan 43 and the purge louver 44.

[0061] The internal temperature sensor 53 and the external temperature sensor 54 are used to monitor the internal and external environmental temperatures of the container body and serve as control signals. The combustible gas detector 55 is used to monitor the combustible gas concentration inside the container body 11 and serve as a control signal.

[0062] The controller 51 is used to receive the signal from the sensor and control the action of the components in the system. The controller 51 can set the operation mode, and the environmental control system can be put into normal operation mode and standby mode through the controller 51. After entering the corresponding mode, the corresponding components in the environmental control system will be put into operation. The controller 51 can also control the environmental control system to enter the emergency state and fire state according to the internal sensor signal and the external signal. After entering the corresponding state, the corresponding components in the environmental control system will be put into operation, and the control unit will send a corresponding alarm to the outside.

[0063] The internal power supply 52 serves as an uninterruptible power supply to supply power to the controller 51, sensors, fans, water pumps, electric shutters and electric valves inside the container when the container loses external power, so that the environmental control system installed inside the container can still have the necessary functions during container transportation, storage and emergency conditions.

[0064] See also Figure 1 and Figure 5 , and further includes an external refrigeration device 2, which is connected to the cold water interfaces 301 of all the marine battery containers 1 with environmental control systems. The external refrigeration device 2 can be a refrigeration unit on board or a refrigeration unit on shore. In this embodiment, a set of external refrigeration devices 2 can provide low-temperature cold water to multiple marine battery containers 1 with environmental control systems. Since the cooling capacity of each marine battery container 1 with environmental control system can be adjusted by the flow rate of cold water entering the coil, the total capacity of the external refrigeration device 2 can be determined according to the peak usage of multiple containers, avoiding the increase in total capacity caused by configuring the external refrigeration device 2 according to the maximum usage condition of each container, thereby achieving the purpose of reducing costs.

[0065] See also Figure 1The return air louver 23, the fresh air louver 24, the ventilation louver 29 and the air expelling louver 44 adopt explosion-proof electric louvers; the circulation fan 25 adopts an explosion-proof electric centrifugal fan; the air supply valve and the exhaust air valve 42 adopt explosion-proof electric valves; the air expelling fan 43 adopts an explosion-proof electric fan; and the internal temperature sensor 53 adopts an explosion-proof temperature sensor. The necessary equipment adopts explosion-proof type, which improves the safety of battery container operation.

[0066] See also Figure 1 to Figure 4 The present invention provides a control method for a marine battery container system with an environmental control system based on the present invention, comprising the steps of:

[0067] S1: Preset multiple working modes in the controller 51, the working modes include: normal operation mode, standby mode, emergency state mode and fire state mode;

[0068] S2: Select a working mode as the current working mode;

[0069] S3: the controller 51 runs the current working mode; the controller 51 obtains the combustible gas concentration in the container body 11 in real time through the combustible gas detector 55;

[0070] S4: When the current working mode is neither the emergency state mode nor the fire mode and the concentration of the combustible gas is greater than a preset value, the current working mode is switched to the emergency state mode, and the controller 51 operates in the emergency state mode; when the controller 51 receives a fire alarm signal from a fire alarm system, the current working mode is switched to the fire state mode, and the controller 51 operates in the fire state mode.

[0071] See also Figure 2 When the controller 51 runs in the normal operation mode, the controller 51 controls the cold water supply switching valve 304, the cold water return switching valve 305 and the temperature control three-way valve 306, so that the low-temperature cold water supply pipe 302, the cold water coil 308 and the low-temperature cold water return pipe 303 are connected; the controller 51 controls the high-temperature cold water circulation pump 311 to be closed, the return air shutter 23 to be opened, the fresh air shutter 24 to be closed, the circulation fan 25 to run, the supply air valve 27 to be opened, the ventilation shutter 29 to be closed, the exhaust air valve 42 to be closed, the exhaust fan 43 to be closed and the exhaust shutter 44 to be closed.

[0072] In normal operation mode, the low-temperature cold water pipe system forms a circulation, and the cold water from the external refrigeration device 2 enters the low-temperature cold water supply pipe 302 inside the container body 11 through the cold water interface 301 of the container body 11 and finally enters the cold water coil 308. After heat exchange, it passes through the low-temperature cold water return pipe 303 and then returns to the external refrigeration device 2 through the cold water interface 301 of the container body 11.

[0073] The air in the box enters the air inlet duct 21 through the return air louver 23, and after heat exchange with cold water, it is sent to the main air duct 28 by the circulation fan 25, and then diffused to the energy storage unit placement area 12 through the air outlet of the main air duct 28 to achieve heat dissipation and temperature reduction. The air flowing through the energy storage unit placement area 12 is heated and then enters the air inlet duct 21 through the return air louver 23 to achieve circulation. The air supply cooling capacity is fed back to the controller 51 through the monitoring signal of the internal temperature sensor 53, and the controller 51 adjusts the opening of the temperature control three-way valve 306 for control.

[0074] See also Figure 3 The standby mode includes an external high temperature standby sub-mode and an external low temperature standby sub-mode; when the controller 51 runs the standby mode, the controller 51 obtains the internal temperature T1 of the container body 11 through the internal temperature sensor 53, and obtains the external temperature T2 of the container body 11 through the external temperature sensor 54, and sets a target temperature T0 inside the container body 11 through the controller 51;

[0075] When the temperature inside the box T1 and the temperature outside the box T2 are both higher than the target temperature T0, the controller 51 runs the external high-temperature standby sub-mode; the controller 51 controls the cold water supply switching valve 304, the cold water return switching valve 305 and the temperature control three-way valve 306, so that the cold water storage tank 312, the high-temperature cold water supply pipe 309, the cold water coil 308 and the high-temperature cold water return pipe 310 are connected; the controller 51 controls the high-temperature cold water circulation pump 311 to open, the return air louver 23 to open, the fresh air louver 24 to close, the circulation fan 25 to run, the supply air valve 27 to open, the ventilation louver 29 to close, the exhaust air valve 42 to close, the purge fan 43 to close and the purge louver 44 to close;

[0076] In this state, the system's cold water system switches to high-temperature cold water circulation, and the high-temperature cold water circulation pump 311 starts to transport the water in the cold water storage tank 312 to the cold water coil 308 for heat exchange with the air, and then returns to the cold water storage tank 312. The air in the container is still in internal circulation, the same as the normal operation mode. The water temperature in the cold water storage tank 312 is lower than the air temperature, so the temperature rise of the water can be used to provide a certain amount of cooling to balance the radiant heat from the external environment to the inside of the container under this working condition, so that the temperature inside the container is maintained within an acceptable range for a certain period of time.

[0077] When the temperature T1 inside the box is higher than the target temperature T0, and the temperature T2 outside the box is lower than the target temperature T0, the controller 51 runs the external low-temperature standby sub-mode; the controller 51 controls the high-temperature cold water circulation pump 311 to turn off, the return air shutters 23 to close, the fresh air shutters 24 to open, the circulation fan 25 to run, the supply air valve 27 to open, the ventilation shutters 29 to open, the exhaust air valve 42 to close, the purge fan 43 to close, and the purge shutters 44 to close.

[0078] In this state, the system's cold water system stops running. Due to the low external ambient temperature, the temperature inside the container can be prevented from rising by ventilation. External air enters the air inlet duct 21 and is sent to the main air duct 28 by the circulating fan 25. After being diffused by the main air duct 28, it is discharged outside the container through the ventilation louver 29, thus achieving ventilation and cooling inside the container.

[0079] See also Figure 4 When the controller 51 runs in the emergency state mode, the controller 51 controls the high-temperature cold water circulation pump 311 to stop, the return air louver 23 to close, the fresh air louver 24 to close, the circulation fan 25 to stop, the supply air valve 27 to close, the ventilation louver 29 to open, the exhaust air valve 42 to open, the purge fan 43 to run and the purge louver 44 to open.

[0080] In this state, external air enters the container through the ventilation louvers 29, flows through the energy storage unit storage area, and then flows through the main air duct 28 to the exhaust duct 41, and is then sent to the outside of the container through the purge fan 43, thereby achieving forced purge to reduce the concentration of combustible gas inside the container to prevent further accumulation of gas and cause fire and explosion.

[0081] When the controller 51 runs the fire state mode, the controller 51 controls the cold water supply switching valve 304, the cold water return switching valve 305 and the temperature control three-way valve 306 to remain as they are; the controller 51 controls the high-temperature cold water circulation pump 311 to stop, the return air louver 23 to close, the fresh air louver 24 to close, the circulation fan 25 to stop, the supply air valve 27 to close, the ventilation louver 29 to close, the exhaust air valve 42 to remain as it is, the purge fan 43 to stop and the purge louver 44 to close.

[0082] In this state, the fans and water pumps inside the container body 11 stop running, the valves remain in place, and all shutters are closed, ensuring that the container body 11 is in a closed state, thereby ensuring the fire extinguishing effect of the fire protection system.

[0083] The process also includes a step in which the controller 51 adjusts the opening of the temperature-controlled three-way valve 306 to the cold water bypass pipe 307 and the cold water coil 308 according to the temperature inside the box and the set required temperature, thereby adjusting the amount of water entering the cold water coil 308 to adjust the cooling effect.

[0084] See also Figure 1 A marine battery container system with an environmental control system according to an embodiment of the present invention includes the following features:

[0085] 1. Part of the air inlet duct 21, the refrigeration duct 22, and the main duct 28 is formed by the container body 11. The cold water coil 308 and the circulation fan 25 are arranged inside the refrigeration duct 22, so that the main components for realizing the refrigeration and environmental control functions become part of the container body structure.

[0086] 2. The cold water subsystem inside the container is provided with a low-temperature cold water supply pipe 302, a low-temperature cold water return pipe 303, a cold water supply switching valve 304, a cold water return switching valve 305, a temperature control three-way valve 306, a cold water bypass pipe 307, a cold water coil 308 and a cold water interface 301. The low-temperature cold water provided by the external refrigeration device 2 is used in conjunction with the circulating air subsystem to achieve temperature control and adjustment inside the container under normal working mode.

[0087] 3. The cold water subsystem provided inside the container body 11 is provided with a cold water supply switching valve 304, a cold water return switching valve 305, a high-temperature cold water supply pipe 309, a high-temperature cold water return pipe 310, a high-temperature cold water circulation pump 311, and a cold water storage tank 312, so that the container can still achieve temperature control and regulation in the box through internal cold water circulation without an external refrigeration device 2 and an external power supply.

[0088] 4. The circulating fan 25, the return air louver 23, the fresh air louver 24, and the ventilation louver 29 are arranged inside the box. By controlling the opening / closing of the louvers, the container can be switched from internal cold air circulation to external fresh air ventilation, so that the temperature inside the container can still be controlled and adjusted through ventilation without an external refrigeration device 2 and an external power supply.

[0089] 5. The controller 51 provided inside the box can perform mode selection operations to put the corresponding components into operation, and can also control the system to enter an emergency state and a fire state according to internal sensor signals and external signals. After entering the corresponding state, the corresponding components in the environmental control system will be put into operation, and the control unit will send a corresponding alarm to the outside.

[0090] 6. The exhaust duct 41, exhaust valve 42, purge fan 43, and purge louver 44 provided inside the container body 11 can be put into operation to realize the purge function according to the activation of the combustible gas detector 55. At the same time, the electric actuators of the ventilation louver and the ventilation valve, the motors of the circulation fan 25 and the purge fan 43 are all explosion-proof, which can ensure the safety of the inside of the container body 11 in an emergency state.

[0091] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A marine battery container system with an environmental control system, characterized in that: The invention comprises at least one marine battery container with an environmental control system, wherein the marine battery container with an environmental control system comprises a container body, and a circulating air fresh air subsystem, a cold water subsystem, an emergency ventilation subsystem and a control system fixed in the container body; the circulating air fresh air subsystem comprises an air inlet duct, a refrigeration duct, a return air louver, a fresh air louver, a circulating fan, an air supply duct, an air supply air valve, a main air duct and a ventilation louver; the air inlet duct is connected to the refrigeration duct, the return air louver and the fresh air louver, the return air louver can communicate the inside of the air inlet duct with the inside of the container body, and the fresh air louver can communicate the inside of the air inlet duct with the outside of the container body; the circulating fan is arranged at the The refrigeration duct is inside the refrigeration duct; the air supply duct is connected between the refrigeration duct and the main duct, and the main duct includes a plurality of air outlets; the ventilation shutter is fixed to the side wall of the container body and can communicate the inside and outside of the container body; the cold water subsystem is connected to the container body and partially extends into the refrigeration duct; the emergency ventilation subsystem is connected to the main duct and the container body; the return air shutter, the fresh air shutter and the ventilation shutter are electric shutters; the control system is arranged in or partially arranged in an energy storage unit placement area in the container body, and the control system is connected to the return air shutter, the fresh air shutter, the circulating fan, the air supply valve, the ventilation shutter, the cold water subsystem and the emergency ventilation subsystem; The cold water subsystem includes: a cold water interface, a low-temperature cold water supply pipe, a low-temperature cold water return pipe, a cold water supply switching valve, a cold water return switching valve, a temperature-controlled three-way valve, a cold water bypass pipe, a cold water coil, a high-temperature cold water supply pipe, a high-temperature cold water return pipe, a high-temperature cold water circulation pump and a cold water storage tank; the cold water interface is connected to the low-temperature cold water supply pipe and the low-temperature cold water return pipe; the two inlets of the cold water supply switching valve are respectively connected to the low-temperature cold water supply pipe and the high-temperature cold water supply pipe; the inlet of the temperature-controlled three-way valve is connected to the outlet of the cold water supply switching valve, and the two outlets of the temperature-controlled three-way valve are respectively connected to the The inlet of the cold water bypass pipe and the inlet of the cold water coil; the inlet of the cold water return switching valve is connected to the cold water bypass pipe and the outlet of the cold water coil, one outlet of the cold water return switching valve is connected to the high-temperature cold water return pipe, and the other outlet of the cold water return switching valve is connected to the low-temperature cold water return pipe; the high-temperature cold water circulation pump is installed on the high-temperature cold water supply pipe; the cold water storage tank is connected to the high-temperature cold water supply pipe and the high-temperature cold water return pipe; the cold water coil is arranged in the refrigeration air duct; the cold water supply switching valve, the cold water return switching valve, the temperature control three-way valve and the high-temperature cold water circulation pump are connected to the control system.

2. The marine battery container system with an environmental control system according to claim 1, characterized in that: The container body forms part of the air inlet duct, the refrigeration duct and the main duct.

3. The marine battery container system with an environmental control system according to claim 1, characterized in that: The air inlet duct is located at the bottom of the front end of the container body; the refrigeration air duct is connected to the top of the air inlet duct, and at least one opening is formed at the connection between the refrigeration air duct and the air inlet duct; the main air duct is arranged along the length direction of the container body and is located at the top of the container body.

4. The marine battery container system with an environmental control system according to claim 1, characterized in that: The emergency ventilation subsystem includes an exhaust air duct, an exhaust air valve and an exhaust fan; the exhaust air duct is connected to the main air duct, and the exhaust air valve and the exhaust air fan are installed on the exhaust air duct; the exhaust air valve and the exhaust air fan are connected to the control system.

5. The marine battery container system with an environmental control system according to claim 4, characterized in that: The emergency ventilation subsystem also includes an air purging shutter, which is fixed to the container body and can connect the inside and outside of the container body; the exhaust air duct is connected between the main air duct and the air purging shutter; the air purging shutter adopts the electric shutter; and the air purging shutter is connected to the control system.

6. The marine battery container system with an environmental control system according to claim 5, characterized in that: The control system includes a controller, and at least one internal power supply, an internal temperature sensor, an external temperature sensor and a combustible gas detector connected to the controller; the controller is also connected to the return air louver, the fresh air louver, the circulating fan, the air supply valve, the ventilation louver, the cold water supply switching valve, the cold water return switching valve, the temperature control three-way valve, the high-temperature cold water circulation pump, the exhaust valve, the purge fan and the purge louver.

7. The marine battery container system with an environmental control system according to claim 6, characterized in that: It also includes an external refrigeration device, which is connected to the cold water interfaces of all the marine battery containers with environmental control systems.

8. The marine battery container system with an environmental control system according to claim 6, characterized in that: The return air louver, the fresh air louver, the ventilation louver and the air expelling louver are explosion-proof electric louvers; the circulating fan is an explosion-proof electric centrifugal fan; the air supply valve and the exhaust air valve are explosion-proof electric valves; the air expelling fan is an explosion-proof electric fan; the internal temperature sensor is an explosion-proof temperature sensor.

9. A control method for a marine battery container system with an environmental control system according to claim 8, comprising the steps of: S1: Preset multiple working modes in the controller, the working modes include: Normal operation mode, standby mode, emergency mode and fire mode; S2: Selecting one of the working modes as the current working mode; S3: the controller runs the current working mode; the controller obtains the combustible gas concentration in the container in real time through the combustible gas detector; S4: When the current working mode is neither the emergency state mode nor the fire mode and the combustible gas concentration is greater than a preset value, the current working mode is switched to the emergency state mode, and the controller operates the emergency state mode; when the controller receives a fire alarm signal from a fire alarm system, the current working mode is switched to the fire state mode, and the controller operates the fire state mode; When the controller runs the normal operating mode, the controller controls the cold water supply switching valve, the cold water return switching valve and the temperature control three-way valve, so that the low-temperature cold water supply pipe, the cold water coil and the low-temperature cold water return pipe are connected; the controller controls the high-temperature cold water circulation pump to be turned off, the return air louver to be opened, the fresh air louver to be closed, the circulation fan to be operated, the supply air valve to be opened, the ventilation louver to be closed, the exhaust air valve to be closed, the purge fan to be turned off and the purge louver to be closed; The standby mode includes an external high temperature standby sub-mode and an external low temperature standby sub-mode; when the controller runs the standby mode, the controller obtains the internal temperature T1 inside the container body through the internal temperature sensor, and obtains the external temperature T2 outside the container body through the external temperature sensor, and sets a target temperature T0 inside the container body through the controller; When the temperature inside the box T1 and the temperature outside the box T2 are both higher than the target temperature T0, the controller runs the external high-temperature standby sub-mode; the controller controls the cold water supply switching valve, the cold water return switching valve and the temperature control three-way valve, so that the cold water storage tank, the high-temperature cold water supply pipe, the cold water coil and the high-temperature cold water return pipe are connected; the controller controls the high-temperature cold water circulation pump to start, the return air louver to open, the fresh air louver to close, the circulation fan to run, the supply air valve to open, the ventilation louver to close, the exhaust air valve to close, the purge fan to close and the purge louver to close; When the temperature inside the box T1 is higher than the target temperature T0, and the temperature outside the box T2 is lower than the target temperature T0, the controller runs the external low-temperature standby sub-mode; the controller controls the high-temperature cold water circulation pump to be turned off, the return air louver to be closed, the fresh air louver to be opened, the circulation fan to be operated, the air supply air valve to be opened, the ventilation louver to be opened, the exhaust air valve to be closed, the purge fan to be turned off, and the purge louver to be closed; When the controller runs the emergency mode, the controller controls the high-temperature cold water circulation pump to stop, the return air louver to close, the fresh air louver to close, the circulation fan to stop, the air supply air valve to close, the ventilation louver to open, the exhaust air valve to open, the purge fan to run and the purge louver to open; When the controller runs the fire state mode, the controller controls the cold water supply switching valve, the cold water return switching valve and the temperature control three-way valve to remain as they are; the controller controls the high-temperature cold water circulation pump to stop, the return air louver to close, the fresh air louver to close, the circulation fan to stop, the supply air valve to close, the ventilation louver to close, the exhaust air valve to remain as it is, the purge fan to stop and the purge louver to close; The controller adjusts the opening of the temperature-controlled three-way valve to the cold water bypass pipe and the cold water coil according to the temperature in the box and the set required temperature, and then adjusts the amount of water entering the cold water coil to adjust the cooling effect.

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