Container energy storage device

Abstract

The invention relates to a container energy storage device. The container energy storage device comprises a box body, a battery pack, a heat management mechanism and a fire fighting mechanism, the box body is provided with a first cavity, and a battery rack is installed in the first cavity. The battery pack comprises a plurality of battery modules which are mounted on the battery rack and are electrically connected with one another. The heat management mechanism is used for maintaining the normal working temperature of equipment in the energy storage container device and comprises a liquid cooling assembly, a ventilation assembly and an air conditioner, the liquid cooling assembly is connected with the battery module, and the liquid cooling assembly is used for conducting heat exchange with the battery module; the ventilation assembly is mounted in the box body and is used for discharging hot air emitted by the battery pack out of the box body; the air conditioner is installed on the box body and used for blowing cold air into the first cavity. The fire-fighting mechanism is mounted in the box body and is used for cooling and extinguishing fire when the battery module is in thermal runaway. The container energy storage device has the advantages of being good in safety and high in stability.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a container energy storage device. Background Art

[0002] Containerized energy storage devices are key components in power distribution networks and can be used to improve power quality. The core of containerized energy storage devices is the energy storage battery, which consists of multiple battery modules installed in a box.

[0003] During the use of container energy storage devices, as the cells of the battery module undergo multiple charge and discharge cycles, the cells will expand, causing squeezing between the cells. In addition, when the cells are overcharged or short-circuited, the air pressure inside the cells increases, causing the cells to expand and squeeze. When squeezing between cells occurs, the temperature inside the cells will become higher and higher, resulting in thermal runaway, with the risk of fire and explosion. Therefore, current container energy storage devices have the defects of low safety and poor stability. Summary of the invention

[0004] Based on this, it is necessary to provide a container energy storage device to address the problems of low safety and poor stability of container energy storage devices.

[0005] A container energy storage device, comprising:

[0006] A box body, wherein the box body is provided with a first chamber, and a battery rack is installed in the first chamber;

[0007] A battery pack, wherein the battery pack comprises a plurality of battery modules, the plurality of battery modules are mounted on the battery rack, and the battery modules are electrically connected to each other;

[0008] a thermal management mechanism, the thermal management mechanism comprising a liquid cooling assembly, a ventilation assembly and an air conditioner, the liquid cooling assembly being connected to the battery module and used for heat exchange with the battery module; the ventilation assembly being installed in the box and used for discharging hot air emitted by the battery pack in the first chamber out of the box; the air conditioner being installed in the box and used for blowing cold air into the first chamber; and

[0009] A fire-fighting mechanism is installed on the box body and is used to cool down and extinguish fire when the battery pack is in thermal runaway.

[0010] In one embodiment, the battery module includes a plurality of battery cells, a base plate, a shell and an inverter. The shell is connected to the base plate. A accommodating cavity is provided between the shell and the base plate. The plurality of battery cells are installed in the accommodating cavity. The inverter is installed on the base plate and is electrically connected to the battery cells.

[0011] In one embodiment, the liquid cooling component includes a refrigerator, a heat exchanger, a first pipe and a second pipe. The refrigerator is installed on the outer side of the box body, and the heat exchanger is installed on the battery cell. The output port of the refrigerator is connected to one end of the first pipe, and the input port of the heat exchanger is connected to the other end of the first pipe. The output port of the heat exchanger is connected to one end of the second pipe, and the input port of the refrigerator is connected to the other end of the second pipe. The refrigerator, the first pipe, the second pipe and the heat exchanger are connected to form a circulation loop, and a cooling medium is provided in the circulation loop.

[0012] In one embodiment, the ventilation assembly includes a ventilation member and a cooling fan, the ventilation member is installed on the side wall of the box body, the ventilation member is provided with a ventilation port, the first chamber is connected to the external environment through the ventilation port, and the cooling fan is installed on the inner wall of the first chamber corresponding to the ventilation member.

[0013] In one embodiment, the air conditioner is installed on the box body, and the air conditioner includes an air outlet and a return air outlet, the air outlet and the return air outlet are both connected to the first chamber, the air outlet is set toward the inverter, and the return air outlet is set above the air outlet.

[0014] In one of the embodiments, the battery packs include a plurality, an air duct is provided between two adjacent battery packs, and the air conditioners include a plurality, and the air conditioners are provided in one-to-one correspondence with the air ducts.

[0015] In one embodiment, the fire fighting mechanism comprises a fire extinguishing agent storage, a fire extinguishing agent nozzle, a third pipeline and a control valve, the fire extinguishing agent storage is installed on the box body, the fire extinguishing agent nozzle is installed on the inner wall of the first chamber, the fire extinguishing agent nozzle is connected to the fire extinguishing agent storage through the third pipeline, and the control valve is arranged on the third pipeline;

[0016] The fire-fighting mechanism also includes a fire-fighting water interface, which is installed on the box body, connected to the first chamber, and used to connect a fire-fighting pipe.

[0017] In one embodiment, the battery pack includes a first insulation board, a second insulation board and a third insulation board, wherein the first insulation board is installed on the side of the battery rack, and the first insulation board is arranged between adjacent battery packs; the second insulation board is installed on the battery rack, and the second insulation board is arranged between adjacent battery modules; the third insulation board is installed in the battery module, and the third insulation board is arranged on the side of the shell facing the battery cell.

[0018] In one embodiment, the battery rack includes a plurality of battery racks, each battery pack is placed one by one in a battery rack, each battery rack is provided with a plurality of placement positions, each placement position is provided with pulley groups on both sides, and the battery module can be movably set in the placement position through the pulley groups.

[0019] In one embodiment, the container energy storage device further includes a controller, and the thermal management mechanism, the fire protection mechanism and each of the battery modules are electrically connected to the controller.

[0020] The above-mentioned container energy storage device, by arranging a battery rack in the first chamber of the box body, the battery pack includes a plurality of battery modules, the battery modules are installed on the battery rack, and the battery modules are electrically connected in series and / or in parallel to form a battery pack that meets the required voltage and capacity. The container energy storage device of the present application is provided with a thermal management mechanism, which includes a liquid cooling component, a ventilation component and an air conditioner. The liquid cooling component can directly perform heat exchange on the battery module through a liquid cooling medium, and the ventilation component can be used to discharge the hot air emitted by the battery pack in the first chamber out of the box body. The air conditioner can be used to blow cold air into the first chamber to cool the internal environment of the first chamber, thereby reducing the temperature of the battery module, avoiding serious accidents such as fire or explosion caused by thermal runaway of the battery module, and realizing effective heat dissipation management of the battery module. Furthermore, the container energy storage device is also equipped with a fire-fighting mechanism to ensure that when a thermal runaway fire occurs in the battery module, the container energy storage device is effectively extinguished, making the operation of the container energy storage system safer, and having the advantages of good safety and high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of the structure of the boxed energy storage device described in an embodiment of the present application.

[0022] FIG. 2 is a schematic diagram of the top view of the structure of the boxed energy storage device described in an embodiment of the present application.

[0023] FIG3 is a schematic diagram of the structure of a battery module of the boxed energy storage device described in an embodiment of the present application.

[0024] FIG4 is a schematic structural diagram of a third heat insulation plate of the boxed energy storage device described in an embodiment of the present application.

[0025] FIG5 is a schematic diagram of the internal structure of a battery module of the boxed energy storage device described in an embodiment of the present application.

[0026] Figure Number:

[0027] 100, box body; 100A, first chamber; 100B, second chamber; 110, battery rack; 111, pulley block; 120, firewall;

[0028] 200, battery pack; 210, battery module; 211, battery cell; 212, bottom plate; 213, housing; 214, converter; 215, support block; 220, third heat insulation board;

[0029] 300, thermal management mechanism; 310, liquid cooling assembly; 320, ventilation assembly; 321, ventilation component; 330, air conditioning;

[0030] 400. Fire-fighting agency; 410. Fire-extinguishing agent nozzle; 420. The third pipeline. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] 1 and 2 , which show a schematic structural diagram of a container energy storage device in an embodiment of the present application. The container energy storage device includes a box body 100, a battery pack 200, a thermal management mechanism 300 and a fire fighting mechanism 400. The main body of the box body 100 is a cubic frame structure, and the surface of the frame structure is covered with a shell plate. The box body 100 has high strength, corrosion resistance and good sealing properties.

[0038] The box 100 is provided with a first chamber 100A and a second chamber 100B. The first chamber 100A is arranged on one side of the second chamber 100B. The box 100 is provided with a battery rack 110 in the first chamber 100A. The battery rack 110 has good anti-vibration performance and heat dissipation design to ensure the stability and safety of the container energy storage device during operation. The staff can start, shut down, cool down and extinguish the container energy storage device in the second chamber 100B.

[0039] Specifically, the main body of the battery rack 110 is a frame structure, and the battery rack 110 is provided with a plurality of placement positions along the vertical direction.

[0040] The battery pack 200 includes a plurality of battery modules 210 . The plurality of battery modules 210 are mounted on the battery rack 110 . The battery modules 210 and the battery rack 110 are disposed in a one-to-one correspondence with each other. The battery modules 210 are electrically connected to each other.

[0041] The thermal management mechanism 300 is used to maintain the normal operating temperature of the equipment in the energy storage container device. The thermal management mechanism 300 includes a liquid cooling component 310, a ventilation component 320 and an air conditioner 330. The liquid cooling component 310 is connected to the battery module 210 and is used to perform heat exchange with the battery module 210.

[0042] The ventilation assembly 320 is installed on the box body 100 , and the ventilation assembly 320 is used to discharge the hot air emitted by the battery pack 200 in the first chamber 100A out of the box body 100 .

[0043] The air conditioner 330 is installed in the housing 100 , and is used to blow cold air into the first chamber 100A.

[0044] The fire fighting mechanism 400 is installed in the box body 100 , and is used to cool down and extinguish the fire when the battery module 210 is in thermal runaway.

[0045] The container energy storage device described in the embodiment of the present application is configured by arranging a battery rack 110 in the first chamber 100A of the box body 100. The battery pack 200 includes a plurality of battery modules 210. The battery modules 210 are mounted on the battery rack 110 so that the battery modules 210 are connected in series and / or in parallel to form a battery pack 200 that meets the required voltage and capacity. The container energy storage device is also provided with a thermal management mechanism 300, which includes a liquid cooling component 310, a ventilation component 320 and an air conditioner 330. The liquid cooling component 310 can directly exchange heat with the battery module 210 through a liquid cooling medium, the ventilation component 320 can be used to discharge the hot air in the first chamber 100A out of the box 100, and the air conditioner 330 can be used to blow cold air into the first chamber 100A to cool the internal environment of the first chamber 100A. The comprehensive effect of the thermal management mechanism 300 reduces the temperature of the battery module 210, avoids serious accidents such as fire or explosion caused by thermal runaway of the battery module 210, and realizes effective heat dissipation management of the battery module 210. Furthermore, the container energy storage device is also equipped with a fire fighting mechanism 400 to ensure that the container energy storage device is effectively cooled and extinguished when a thermal runaway fire occurs in the battery module 210.

[0046] The container energy storage device described in the embodiment of the present application is provided with a liquid cooling assembly 310 through a thermal management mechanism 300 to perform heat exchange on the battery module 210, the ventilation assembly 320 discharges the hot air in the first chamber 100A out of the box body 100, and the air conditioner 330 blows cold air into the first chamber 100A, so that the thermal management mechanism 300 works together to effectively manage the heat of the battery module 210, and a fire fighting mechanism 400 is also provided to extinguish the fire of the battery pack 200 that has thermal runaway, so that the operation of the container energy storage system is safer, and it has the advantages of good safety and high stability.

[0047] In an optional embodiment, as shown in FIG1 , the shell plate of the box body 100 is a fire wall 120, which can prevent the fire in the first chamber 100A from spreading to other devices. Specifically, the material of the fire wall 120 can be weathering steel or aluminum alloy, which can not only prevent fire but also withstand the harsh outdoor natural environment, such as wind, rain, dust, salt spray, etc., to ensure the normal operation of the internal equipment.

[0048] Furthermore, the dimensions of the box 100 commonly include standard specifications such as 20 feet and 40 feet, and can also be customized according to specific needs to meet the requirements of different energy storage capacities and application scenarios.

[0049] In combination with Figures 3 to 5, a structural schematic diagram of a container energy storage device in an embodiment of the present application is shown. In some embodiments, the battery module 210 includes multiple battery cells 211, a bottom plate 212, a shell 213 and an inverter 214. The shell 213 is connected to the bottom plate 212, and a receiving cavity is provided between the shell 213 and the bottom plate 212. Multiple battery cells 211 are installed in the receiving cavity. The inverter 214 is installed on the bottom plate 212, and the inverter 214 is arranged on one side of the battery cell 211, and the inverter 214 is electrically connected to the battery cell 211.

[0050] Specifically, common types of battery cells 211 include lithium-ion battery cells, lead-acid battery cells, liquid flow battery cells, etc. The battery cells 211 may be cylindrical battery cells, square battery cells, etc., and multiple battery cells 211 are arranged in a matrix in the accommodating cavity.

[0051] By arranging the battery cell 211 in the accommodation cavity formed by the bottom plate 212 and the shell 213, it is convenient to disassemble and assemble the entire battery module 210 on the battery rack 110, and the shell 213 can protect the internal battery cell 211 to prevent the battery cell 211 from being hit when it falls, thereby preventing safety accidents such as combustion or explosion of the battery cell 211 after being hit. The converter 214 is electrically connected to the battery cell 211. The converter 214 can efficiently and flexibly convert and control the direct current output by the battery module 210. It is mainly used to connect the battery module 210 with the DC bus or other DC loads to achieve stable transmission and precise control of electric energy.

[0052] In an exemplary embodiment, the converter 214 is a flexible full DC converter, which can realize flexible control of the charging and discharging process of the battery module 210, adjust the charging and discharging strategy according to different application scenarios and requirements, extend the battery life, and improve the overall performance of the battery energy storage system.

[0053] In an optional embodiment, as shown in Figures 1 and 2, the liquid cooling component 310 includes a refrigerator, a heat exchanger, a first pipe and a second pipe. The refrigerator is installed on the outer side of the box 100, and the heat exchanger is installed on the battery cell 211. The output port of the refrigerator is connected to one end of the first pipe, the input port of the heat exchanger is connected to the other end of the first pipe, the output port of the heat exchanger is connected to one end of the second pipe, and the input port of the refrigerator is connected to the other end of the second pipe. The refrigerator, the first pipe, the second pipe and the heat exchanger are connected to form a circulation loop, and a cooling medium is provided in the circulation loop.

[0054] In order to cool down the battery cell 211, a heat exchanger is connected to the battery cell 211, and a refrigerator is installed outside the box 100. The heat exchanger and the refrigerator are both connected to the first pipe and the second pipe to form a circulation loop. The refrigerator cools the cooling medium in the circulation loop and then transports it to the heat exchanger through the first pipe. The cooling medium exchanges heat with the battery cell 211 through the heat exchanger and then is transported back to the refrigerator through the second pipe for further heat exchange, so that the heat of the battery cell 211 is discharged to the external environment, thereby achieving efficient heat dissipation of the battery cell 211, and has the advantages of good heat dissipation effect and improved safety.

[0055] In an optional embodiment, as shown in FIG. 1 and FIG. 2 , the ventilation assembly 320 includes a ventilation member 321 and a heat dissipation fan. The ventilation member 321 is installed on the side wall of the box body 100. The ventilation member 321 is provided with a vent. The first chamber 100A is connected to the external environment through the vent. The heat dissipation fan is installed on the inner wall of the first chamber 100A corresponding to the ventilation member 321. By installing the ventilation member 321 on the side wall of the box body 100, the vent of the ventilation member 321 is connected to the first chamber 100A and the external environment, and then a heat dissipation fan is arranged at the position corresponding to the vent. The heat dissipation fan is used to discharge the hot air in the first chamber 100A to the external environment through the vent, thereby reducing the ambient temperature inside the first chamber 100A, avoiding the heat accumulation in the first chamber 100A caused by the heating of the battery module 210, and reducing the safety problems caused by the heating of the battery module 210.

[0056] In an exemplary embodiment, as shown in FIG1 , the number of ventilation members 321 may be one or two, and the ventilation members 321 may be provided with rain shields and / or dustproof nets, so that the ventilation members 321 may not only ventilate, but also have rainproof and dustproof functions, thereby preventing external rainwater and dust from entering the box body 100 and ensuring stable operation of the equipment.

[0057] In an optional embodiment, as shown in FIG1 , an air conditioner 330 is installed on the box 100. The air conditioner 330 includes an air outlet and a return air outlet. Both the air outlet and the return air outlet are connected to the first chamber 100A. The air outlet is arranged toward the converter 214, and the return air outlet is arranged at the upper part of the air outlet. By arranging the air conditioner 330 to input cold air into the first chamber 100A, the cold air cools the converter 214, thereby reducing heat accumulation, thereby reducing the safety problems caused by the heating of the battery module 210. Also, by arranging the air outlet of the air conditioner 330 at the bottom, the cold air can directly sink and remain in the first chamber 100A, and the rising hot air in the first chamber 100A will be sucked into the air conditioner 330 by the return air outlet, forming a natural convection cycle, making the temperature stratification of the first chamber 100A more reasonable.

[0058] Furthermore, the battery pack 200 includes multiple battery packs 200, and an air duct is provided between two adjacent battery packs 200. The air conditioner 330 includes multiple air conditioners 330, and the air conditioners 330 are arranged in a one-to-one correspondence with the air ducts. By setting the air ducts, the cold air of the air conditioner 330 is transferred to the rear of the battery pack 200 through the air ducts, thereby reducing the overall temperature of the battery pack 200.

[0059] Furthermore, the battery rack 110 also includes a plurality of battery packs 200, each battery pack 200 is placed in a battery rack 110 in a one-to-one correspondence, and pulley groups 111 are provided on both sides of each placement position, and the battery module 210 is movably arranged at the placement position through the pulley groups 111. The battery module 210 is detachably mounted on the battery rack 110 through the pulley groups 111, so that the battery module 210 has the advantage of being easy to disassemble and assemble.

[0060] In an optional embodiment, as shown in FIG2 , the fire fighting mechanism 400 includes a fire extinguishing agent storage, a fire extinguishing agent nozzle 410, a third pipe 420 and a control valve. The fire extinguishing agent storage is installed on the box body 100, the fire extinguishing agent nozzle 410 is installed on the inner wall of the first chamber 100A, the fire extinguishing agent nozzle 410 is connected to the fire extinguishing agent storage through the third pipe 420, and the control valve is set on the third pipe 420. Specifically, there are multiple fire extinguishing agent nozzles 410, and the fire extinguishing agent nozzles 410 are set one by one corresponding to the battery pack 200. By setting the fire extinguishing agent nozzle 410, when a fire is detected in the battery module 210, the independently controlled fire extinguishing agent nozzle 410 above the corresponding battery pack 200 is started to spray the fire extinguishing agent to suppress explosion and extinguish the fire of the battery pack 200. Specifically, the fire extinguishing agents are liquid nitrogen and carbon dioxide. The fire extinguishing media of liquid nitrogen and carbon dioxide have good insulation and cooling properties. They can extinguish battery fires and electrical equipment fires and prevent re-ignition. When controlling use, you can choose to use liquid nitrogen for fire extinguishing, and then use carbon dioxide for fire extinguishing, so as to achieve the function of explosion suppression and fire extinguishing, which has the advantage of improving the safety of container energy storage devices.

[0061] Furthermore, the fire fighting mechanism 400 also includes a fire fighting water interface, which is installed on the box 100, connected to the first chamber 100A, and used to connect a fire fighting pipe. By setting up the fire fighting water interface, after using liquid nitrogen and carbon dioxide to extinguish the fire, when it is detected that the battery temperature has not dropped to a predetermined temperature and may be dangerous, the fire fighting water interface can be quickly and reliably connected to the fire fighting water pipe joint to ensure that the fire fighting water can be quickly injected into the first chamber 100A of the box 100 through the fire fighting water interface, so that the battery pack 200 is partially submerged or sprayed with fire fighting water, so as to achieve a cooling effect, provide time for rescue, further ensure the safety of the battery pack in thermal runaway, and improve the safety of the device.

[0062] In an optional embodiment, as shown in FIG4 , the battery pack 200 includes a first heat insulation board, a second heat insulation board and a third heat insulation board 220, the first heat insulation board is installed on the side of the battery rack 110, the first heat insulation board is arranged between adjacent battery packs 200, the second heat insulation board is installed on the battery rack 110, the second heat insulation board is arranged between adjacent battery modules 210, the third heat insulation board 220 is installed in the battery module 210, and the third heat insulation board 220 is arranged on the side of the shell 213 facing the battery cell 211, that is, the third heat insulation board 220 is arranged between the shell 213 and the battery cell 211, and a support block 215 is arranged between the third heat insulation board 220 and the battery cell 211, and the support block 215 is used to support the third heat insulation board 220. Specifically, the first heat insulation board, the second heat insulation board and the third heat insulation board 220 are all nano heat insulation boards with good heat insulation and fire resistance. By providing the first insulation plate, the second insulation plate and the third insulation plate 220, effective heat insulation treatment is achieved inside the battery module 210 and between the battery modules 210. Good heat insulation performance helps to delay the spread of heat when the battery module 210 has a fault such as thermal runaway, and can prevent the rapid diffusion of heat and gas to a certain extent, reduce the risk of safety accidents such as fire, and buy time for taking safety measures.

[0063] In an optional embodiment, the container energy storage device further includes a controller, and the thermal management mechanism 300, the fire fighting mechanism 400 and each battery module 210 are all electrically connected to the controller. Specifically, the controller is arranged in the second chamber 100B, and the staff can operate the controller in the second chamber 100B to start, shut down, cool down or extinguish the container energy storage device. By setting the controller, the controller is connected to each battery module 210, and the state of the battery module 210 can be detected. When the value of the temperature of the monitored battery module 210 is abnormal, the thermal management mechanism 300 is adaptively adjusted to the cooling intensity of the battery module 210, for example, the temperature of the air conditioner 330 is reduced, the temperature of the liquid cooling medium is reduced, the speed of the cooling fan is increased, etc., and the temperature of the battery cell 211 is adaptively adjusted so that the battery cell is cooled to the target temperature within a predetermined time. If the temperature of the battery module 210 exceeds the threshold and thermal runaway occurs, the fire fighting mechanism 400 can be automatically controlled to extinguish the fire and cool down the battery module 210 to avoid further deterioration of the situation and ensure the safe and reliable operation of the container energy storage device.

[0064] The container energy storage device described in the embodiment of the present application has the following beneficial effects:

[0065] 1. A liquid cooling assembly 310 is provided through the thermal management mechanism 300 to perform heat exchange on the battery module 210, the ventilation assembly 320 discharges the hot air in the first chamber 100A out of the box body 100, and the air conditioner 330 blows cold air into the first chamber 100A, so that the thermal management mechanism 300 works together to effectively manage the heat of the battery module 210, and a fire fighting mechanism 400 is also provided to extinguish the fire of the battery pack 200 that has thermal runaway, so that the operation of the container energy storage system is safer, and it has the advantages of good safety and high stability.

[0066] 2. The converter 214 can efficiently and flexibly convert and control the DC power output by the battery module 210, and is mainly used to connect the battery module 210 with the DC bus or other DC loads to achieve stable transmission and precise control of electric energy.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A container energy storage device, characterized in that: include: A box body (100), the box body (100) being provided with a first chamber (100A), a battery rack (110) being installed in the first chamber (100A); A battery pack (200), the battery pack (200) comprising a plurality of battery modules (210), the plurality of battery modules (210) being mounted on the battery rack (110), the battery modules (210) being electrically connected to each other; A thermal management mechanism (300), the thermal management mechanism (300) comprising a liquid cooling component (310), a ventilation component (320) and an air conditioner (330), the liquid cooling component (310) being connected to the battery module (210), the liquid cooling component (310) being used to perform heat exchange with the battery module (210); the ventilation component (320) being installed on the box (100), the ventilation component (320) being used to discharge hot air emitted by the battery pack (200) in the first chamber (100A) out of the box (100); the air conditioner (330) being installed on the box (100), the air conditioner (330) being used to blow cold air into the first chamber (100A); as well as A fire-fighting mechanism (400) is installed on the box (100), and is used to cool down and extinguish the battery pack (200) when it is in thermal runaway.

2. The container energy storage device according to claim 1, characterized in that: The battery module (210) comprises a plurality of battery cells (211), a base plate (212), a shell (213) and an inverter (214); the shell (213) is connected to the base plate (212); a receiving cavity is provided between the shell (213) and the base plate (212); the plurality of battery cells (211) are installed in the receiving cavity; the inverter (214) is installed on the base plate (212); and the inverter (214) is electrically connected to the battery cells (211).

3. The container energy storage device according to claim 2, characterized in that: The liquid cooling component (310) comprises a refrigerator, a heat exchanger, a first pipe and a second pipe, wherein the refrigerator is mounted on the outer side of the box (100), the heat exchanger is mounted on the battery cell (211), the output port of the refrigerator is connected to one end of the first pipe, the input port of the heat exchanger is connected to the other end of the first pipe, the output port of the heat exchanger is connected to one end of the second pipe, the input port of the refrigerator is connected to the other end of the second pipe, the refrigerator, the first pipe, the second pipe and the heat exchanger are connected to form a circulation loop, and a cooling medium is provided in the circulation loop.

4. The container energy storage device according to claim 1, characterized in that: The ventilation assembly (320) comprises a ventilation member (321) and a heat dissipation fan. The ventilation member (321) is installed on the side wall of the box body (100). The ventilation member (321) is provided with a ventilation port. The first chamber (100A) is connected to the external environment through the ventilation port. The heat dissipation fan is installed on the inner wall of the first chamber (100A) corresponding to the ventilation member (321).

5. The container energy storage device according to claim 2, characterized in that: The air conditioner (330) comprises an air outlet and an air return outlet, the air outlet and the air return outlet are both connected to the first chamber (100A), and the air outlet is arranged toward the converter (214).

6. The container energy storage device according to claim 5, characterized in that: The battery packs (200) include a plurality of battery packs (200), an air duct is provided between two adjacent battery packs (200), the air conditioners (330) include a plurality of air conditioners (330), and the air conditioners (330) are provided in a one-to-one correspondence with the air ducts.

7. The container energy storage device according to claim 1, characterized in that: The fire-fighting mechanism (400) comprises a fire-extinguishing agent storage tank, a fire-extinguishing agent nozzle (410), a third pipeline (420) and a control valve; the fire-extinguishing agent storage tank is installed on the box body (100); the fire-extinguishing agent nozzle (410) is installed on the inner wall of the first chamber (100A); the fire-extinguishing agent nozzle (410) is connected to the fire-extinguishing agent storage tank via the third pipeline (420); and the control valve is arranged on the third pipeline (420); The fire-fighting mechanism (400) further comprises a fire-fighting water interface, the fire-fighting water interface being installed on the box (100), the fire-fighting water interface being connected to the first chamber (100A), and the fire-fighting water interface being used to connect a fire-fighting pipe.

8. The container energy storage device according to claim 2, characterized in that: The battery pack (200) comprises a first heat insulation board, a second heat insulation board and a third heat insulation board (220); the first heat insulation board is mounted on a side of the battery rack (110), and the first heat insulation board is arranged between adjacent battery packs (200); the second heat insulation board is mounted on the battery rack (110), and the second heat insulation board is arranged between adjacent battery modules (210); the third heat insulation board (220) is mounted in the battery module (210), and the third heat insulation board (220) is arranged on a side of the housing (213) facing the battery cell (211).

9. The container energy storage device according to claim 6, characterized in that: The battery rack (110) comprises a plurality of battery racks (110), each of the battery packs (200) being placed in a one-to-one correspondence on one of the battery racks (110), each of the battery racks (110) being provided with a plurality of placement positions, each of the placement positions being provided with pulley groups (111) on both sides, and the battery modules (210) being movably arranged in the placement positions via the pulley groups (111).

10. The container energy storage device according to claim 1, characterized in that: The container energy storage device also includes a controller, and the thermal management mechanism (300), the fire protection mechanism (400) and each of the battery modules (210) are all electrically connected to the controller.

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