Thermal control and fire fighting integrated device and distributed energy storage power station

Abstract

The utility model provides a thermal control and fire fighting integrated device and a distributed energy storage power station, and relates to the technical field of battery thermal runaway. The thermal control and fire fighting integrated device comprises a refrigeration mechanism, a water tank mechanism and a fire fighting mechanism, the refrigerating mechanism comprises a cooling tower and a water chilling unit, and the cooling tower and the water chilling unit are arranged in a matched mode. The water tank mechanism is provided with a first inlet and outlet end and a second inlet and outlet end, the water tank mechanism is connected with the water chilling unit through the first inlet and outlet end, and the water tank mechanism is connected with an energy storage battery box to be cooled through the second inlet and outlet end; the fire-fighting mechanism is provided with a fire-fighting medium box, and the fire-fighting medium box is connected with the water tank mechanism and the to-be-cooled energy storage battery box. The thermal control and fire fighting integrated device can achieve the technical effects of saving occupied space, being efficient and energy-saving and being easy to maintain.

Description

Technical Field

[0001] This application relates to the technical field of battery thermal runaway, and more particularly, to a thermal control and fire protection integrated device and a distributed energy storage power station. Background Art

[0002] Currently, in the operation and use of energy storage power stations, the cooling system and fire protection devices play a crucial role. They help maintain the battery or energy storage device within an appropriate temperature range during operation and provide strong protection in the event of battery thermal runaway. With the rapid development of renewable energy, the demand for energy storage power stations is also increasing continuously. Therefore, the current application status of the thermal management system is particularly important.

[0003] In the prior art, for large-scale energy storage power stations, there are dozens or hundreds of energy storage containers distributed. Each container is equipped with a small liquid cooling system and a fire protection system. Limited by the space conditions of a single container, both the liquid cooling system and the fire protection system need to be arranged in a miniaturized manner, resulting in disadvantages such as high material costs, poor equipment performance, high energy consumption, large space occupation, and low energy density of the energy storage container. Summary of the Utility Model

[0004] The purpose of this application is to provide a thermal control and fire protection integrated device and a distributed energy storage power station, which can achieve the technical effects of saving space occupation, high energy efficiency, and easy maintenance.

[0005] In a first aspect, this application provides a thermal control and fire protection integrated device, including a refrigeration mechanism, a water tank mechanism, and a fire protection mechanism;

[0006] The refrigeration mechanism includes a cooling tower and a chiller, and the cooling tower is arranged in a matching manner with the chiller;

[0007] The water tank mechanism is provided with a first inlet / outlet end and a second inlet / outlet end. The water tank mechanism is connected to the chiller through the first inlet / outlet end, and the water tank mechanism is connected to the energy storage battery box to be cooled through the second inlet / outlet end;

[0008] The fire protection mechanism is provided with a fire protection medium tank, and the fire protection medium tank is respectively connected to the water tank mechanism and the energy storage battery box to be cooled.

[0009] In the above implementation process, the thermal control and fire protection integrated device centrally arranges a refrigeration mechanism, a water tank mechanism and a fire protection mechanism. The refrigeration mechanism provides low-temperature cooling water to the water tank and cools down the energy storage battery box to be dissipated. The fire protection mechanism performs fire control on the energy storage battery box to be dissipated, and the fire protection mechanism is connected to the water tank mechanism. When the fire protection medium in the fire protection medium box is insufficient, the water stored in the water tank mechanism is used to carry out fire protection treatment on the energy storage battery box to be dissipated. Therefore, the thermal control and fire protection integrated device can release the energy storage cabin space through the integrated design of refrigeration and fire protection, and has a compact structure, thereby achieving the technical effects of saving space occupancy, high efficiency and energy saving, and easy maintenance.

[0010] Furthermore, the refrigeration mechanism includes a first water pump and a first sensor, the cooling tower is connected to the chiller through the first water pump, and the first sensor is arranged between the cooling tower and the chiller.

[0011] In the above implementation process, a first water pump is provided to transport the cooled cooling water in the cooling tower to the chiller, and a first sensor is used to monitor data such as the flow rate and temperature of the transport pipeline between the cooling tower and the chiller.

[0012] Furthermore, the refrigeration mechanism also includes a second water pump and a second sensor, the chiller is connected to the first inlet end of the water tank mechanism through the second water pump, and the second sensor is arranged between the chiller and the water tank mechanism.

[0013] In the above implementation process, a second water pump is provided to transport cooling water in the chiller to the water tank mechanism, and a second sensor is used to monitor data such as the flow rate and temperature of the transport pipeline between the chiller and the water tank mechanism.

[0014] Furthermore, the water tank mechanism includes a third water pump and a third sensor. The water tank mechanism is connected to the energy storage battery box to be cooled by the third water pump. The third sensor is arranged between the water tank mechanism and the energy storage battery box to be cooled.

[0015] In the above implementation process, a third water pump is provided to transport the cooling water in the water tank mechanism to the energy storage battery box to be cooled, and a third sensor is used to monitor data such as the flow rate and temperature of the transport pipeline between the water tank mechanism and the energy storage battery box to be cooled.

[0016] Furthermore, the fire fighting mechanism also includes a fourth water pump, and the fire fighting medium box is connected to the energy storage battery box to be cooled via the fourth water pump.

[0017] In the above implementation process, the fourth water pump is provided to transport the fire-fighting medium in the fire-fighting medium box to the energy storage battery box to be cooled, so as to perform fire-fighting treatment on the energy storage battery box to be cooled.

[0018] Furthermore, the fire protection mechanism further includes a fire control valve, one end of the fire control valve is connected to the water tank mechanism, and the other end of the fire control valve is connected between the outlet end of the fire protection medium tank and the fourth water pump.

[0019] In the above implementation process, by setting the fire control valve, the cooling water in the water tank mechanism can be directly used as the fire protection medium when necessary, and the cooling water is transported to the energy storage battery box through the fire protection medium pipeline of the fire protection mechanism to conduct fire protection treatment on the energy storage battery box in a thermal runaway state.

[0020] Furthermore, the fire protection mechanism further includes a thermal runaway detection mechanism, the thermal runaway detection mechanism is arranged on the energy storage battery box to be cooled, and the thermal runaway detection mechanism is respectively connected to the fire control valve and the fourth water pump.

[0021] In the above implementation process, the fire protection status of the energy storage battery box to be cooled is monitored in real time through the thermal runaway detection mechanism. When the energy storage battery box to be cooled is in a thermal runaway state, the fire control valve and / or the fourth water pump are controlled to transport the fire protection medium to the energy storage battery box to be cooled.

[0022] Furthermore, the thermal control and fire protection integrated device further includes a control mechanism, and the control mechanism is electrically connected to the refrigeration mechanism, the water tank mechanism, and the fire protection mechanism respectively.

[0023] In the above implementation process, the operation of the refrigeration mechanism, the water tank mechanism, and the fire protection mechanism is coordinated and controlled uniformly through the control mechanism.

[0024] Furthermore, the fire protection mechanism includes an annular medium pipeline, and the fire protection medium tank is connected to the energy storage battery box to be cooled through the annular medium pipeline.

[0025] In the above implementation process, the pipeline of the fire protection mechanism is arranged in a ring shape, which can effectively ensure the uniform distribution of the fire protection medium.

[0026] In a second aspect, the present application provides a distributed energy storage power station, including at least one thermal control and fire protection integrated device according to any one of the first aspect.

[0027] Other features and advantages disclosed in the present application will be described in the subsequent specification, or, some features and advantages can be inferred from the specification or determined without doubt, or can be learned by implementing the above technologies disclosed in the present application.

[0028] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0029] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] Figure 1 Structural schematic diagram of the integrated thermal control and fire protection device provided by the embodiment of the present application;

[0031] Figure 2 Planar structural schematic diagram of the integrated thermal control and fire protection device provided by the embodiment of the present application;

[0032] Figure 3 Structural schematic diagram of the fire protection mechanism and the annular medium pipeline provided by the embodiment of the present application;

[0033] Figure 4 Structural schematic diagram of the energy storage battery box to be cooled provided by the embodiment of the present application.

[0034] Reference numerals: refrigeration mechanism 100; cooling tower 110; chiller 120; first water pump 131; second water pump 132; third water pump 133; fourth water pump 134; first sensor 141; second sensor 142; third sensor 143; water tank mechanism 200; fire protection mechanism 300; fire protection control valve 310; energy storage battery box to be cooled 400. Specific embodiments

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0036] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0037] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0038] In addition, the terms "mounted", "arranged", "provided with", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0040] Generally, existing energy storage power station cooling systems are mainly divided into two types: traditional air-cooled systems and advanced liquid-cooled systems; among them, traditional air-cooled systems use air for heat dissipation, and the heat is discharged from the surface of the battery or energy storage device through a fan. The advantages of this system are simplicity, low cost, and no need for additional liquid media; however, in high-power density applications, the air-cooled system may not be able to provide sufficient heat dissipation capacity, resulting in temperature rise and affecting the performance and life of the battery;

[0041] In order to solve the limitations of air cooling systems, advanced liquid cooling systems have been widely researched and adopted; liquid cooling systems use flowing liquid media, such as water or coolants, to absorb and transfer heat; this system effectively reduces the temperature of batteries or energy storage devices by directly contacting their surfaces; in contrast, liquid cooling systems have higher heat dissipation capabilities, can handle applications with higher power densities, and provide better temperature control. Existing distributed energy storage containers are designed with liquid cooling systems and fire protection systems as standard, which are arranged inside the energy storage containers. Usually, large energy storage power stations will be equipped with hundreds of containers, which means that they are equipped with a large number of small liquid cooling systems and fire protection systems;

[0042] However, for large-scale energy storage power stations, there will be dozens or hundreds of energy storage containers, each of which is equipped with a small liquid cooling system and a fire protection system. Limited by the space conditions of a single container, the liquid cooling system and the fire protection system need to be miniaturized, resulting in high material costs, poor equipment performance, high energy consumption, large space occupation, and low energy density of energy storage containers. For example:

[0043] High material cost: The liquid cooling system is arranged in a small space inside the container, and needs to select low-power compressors, water pumps, heat exchangers, etc. for heat dissipation. The cost of the liquid cooling system for multiple containers is relatively high, much higher than the price of large screw chillers or centrifugal chillers in integrated cold stations. The fire protection system is also arranged in the container, and is used to reserve fire extinguishing for the batteries inside the container. A certain amount of fire protection dosage reserves and multiple fire detection systems are required in each container. Multiple containers have more redundant fire protection medium reserves and more fire detectors, resulting in more fire protection costs.

[0044] Poor equipment performance: Distributed small liquid cooling systems mostly use rotor compressors and air-cooled microchannel condensers. Affected by the technical route, the unit efficiency COP is limited to within 3.0 and cannot be broken through, resulting in high energy consumption. It is far lower than the efficiency of large screw chillers or centrifugal chillers, and the general COP can reach between 6-9;

[0045] Large space occupation: Traditional distributed energy storage power station containers are usually designed with liquid cooling unit compartments and fire protection system compartments, resulting in a 20-foot standard container that can only accommodate a maximum of 10 battery clusters, leaving space for 2 battery clusters for the liquid cooling unit and fire protection system. For example, a 100-battery cluster energy storage power station traditionally requires 10 energy storage containers, but if 12-cluster energy storage containers are used, 9 containers are required. In other words, the traditional layout plan occupies a lot of space, and the battery energy density of a single container is low;

[0046] In addition, in terms of inspection and maintenance, due to the distributed layout of the liquid cooling system and fire protection system, there are hundreds of them distributed in containers in a storage power station. The maintenance and inspection work is huge and requires more manpower and time.

[0047] To solve the above-mentioned technical problems, the embodiments of the present application provide a thermal control and fire protection integrated device and a distributed energy storage power station, which can be applied to the thermal control management and fire protection management processes of energy storage battery boxes; please refer to Figures 1 to 2 , Figure 1 which is a schematic structural diagram of the thermal control and fire protection integrated device provided by the embodiments of the present application, Figure 2 and which is a schematic plan view of the thermal control and fire protection integrated device provided by the embodiments of the present application. The thermal control and fire protection integrated device includes a refrigeration mechanism 100, a water tank mechanism 200, and a fire protection mechanism 300;

[0048] Exemplarily, the refrigeration mechanism 100 includes a cooling tower 110 and a chiller 120, and the cooling tower is arranged in a matching manner with the chiller;

[0049] Among them, the chiller 120 recovers high-temperature water from the water tank mechanism 200 and sends the cooled low-temperature water to the water tank mechanism 200; the chiller 120 can adopt a water-cooled condenser, perform secondary heat exchange through the configured cooling tower 110, and release the heat of the recovered high-temperature water into the air by means of evaporation convection and other means to complete the cooling of the high-temperature water and convert it into low-temperature water (this low-temperature water can dissipate heat from the energy storage battery box to be cooled).

[0050] Exemplarily, the water tank mechanism 200 is provided with a first inlet / outlet end and a second inlet / outlet end. The water tank mechanism 200 is connected to the chiller 120 through the first inlet / outlet end, and the water tank mechanism 200 is connected to the energy storage battery box 400 to be cooled through the second inlet / outlet end;

[0051] By providing the water tank mechanism 200 as a heat conduction medium transfer station between the chiller 120 and the energy storage battery box 400 to be cooled, the low-temperature water of the water tank mechanism 200 is transported to the energy storage battery box 400 to be cooled, and the battery in the energy storage battery box 400 to be cooled is cooled by water cooling with the low-temperature water; the high-temperature water in the water tank mechanism 200 is transported to the chiller 120, and the high-temperature water is cooled by the chiller 120.

[0052] Exemplarily, the fire protection mechanism 300 is provided with a fire protection medium tank, and the fire protection medium tank is respectively connected to the water tank mechanism 200 and the energy storage battery box 400 to be cooled.

[0053] Exemplarily, a fire-fighting medium is stored in the fire-fighting medium tank, and the fire-fighting medium can be a fire-extinguishing medium such as water; when a thermal runaway situation such as a fire occurs in the energy storage battery box 400 to be cooled, the fire-fighting medium is transported from the fire-fighting medium tank 400 to the energy storage battery box to be cooled for fire-fighting treatment, so as to avoid further damage to the energy storage battery box to be cooled; wherein, the fire-fighting medium tank is respectively connected to the water tank mechanism 200, and when the fire-fighting medium in the fire-fighting medium tank is insufficient, the water stored in the water tank mechanism 200 can be used to carry out fire-fighting treatment on the energy storage battery box to be cooled.

[0054] In some embodiments, the integrated thermal control and fire-fighting device centrally arranges the refrigeration mechanism 100, the water tank mechanism 200, and the fire-fighting mechanism 300. The refrigeration mechanism 100 provides low-temperature cooling water to the water tank mechanism 200 and cools the energy storage battery box 400 to be cooled. The fire-fighting mechanism 300 controls the fire-fighting of the energy storage battery box 400 to be cooled, and the fire-fighting mechanism 300 is connected to the water tank mechanism 200. When the fire-fighting medium in the fire-fighting medium tank is insufficient, the water stored in the water tank mechanism 200 is used to carry out fire-fighting treatment on the energy storage battery box 400 to be cooled; thus, through the integrated design of refrigeration and fire-fighting, the integrated thermal control and fire-fighting device provides centralized cooling, can release the space of the energy storage compartment, has a compact structure, and achieves the technical effects of saving space occupancy, high energy efficiency, and easy maintenance.

[0055] Exemplarily, the refrigeration mechanism 100 includes a first water pump 131 and a first sensor 141. The cooling tower 110 is connected to the chiller 120 through the first water pump 131, and the first sensor 141 is arranged between the cooling tower 110 and the chiller 120.

[0056] Exemplarily, by setting the first water pump 131, the cooled cooling water in the cooling tower 110 is transported to the chiller 120, and the first sensor 141 monitors data such as the flow rate and temperature of the pipeline between the cooling tower 110 and the chiller 120.

[0057] Exemplarily, the refrigeration mechanism 100 further includes a second water pump 132 and a second sensor 142. The chiller 120 is connected to the first inlet end of the water tank mechanism 200 through the second water pump 132, and the second sensor 142 is arranged between the chiller 120 and the water tank mechanism 200.

[0058] Exemplarily, by setting the second water pump 132, the cooling water in the chiller 120 is transported to the water tank mechanism 200, and the second sensor 142 monitors data such as the flow rate and temperature of the pipeline between the chiller 120 and the water tank mechanism 200.

[0059] Exemplarily, the water tank mechanism 200 includes a third water pump 133 and a third sensor 143. The water tank mechanism 200 is connected to the energy storage battery box 400 to be cooled through the third water pump 133, and the third sensor 143 is disposed between the water tank mechanism 200 and the energy storage battery box 400 to be cooled.

[0060] Exemplarily, by setting the third water pump 133, the cooling water in the water tank mechanism 200 is conveyed to the energy storage battery box 400 to be cooled, and data such as the flow rate and temperature of the conveying pipeline between the water tank mechanism 200 and the energy storage battery box 400 to be cooled are monitored through the third sensor 143.

[0061] Exemplarily, the fire protection mechanism further includes a fourth water pump 134. The fire protection medium tank is connected to the energy storage battery box 400 to be cooled through the fourth water pump 134.

[0062] Exemplarily, by setting the fourth water pump 134, the fire protection medium in the fire protection medium tank is conveyed to the energy storage battery box 400 to be cooled, and fire protection treatment is performed on the energy storage battery box 400 to be cooled.

[0063] Exemplarily, the fire protection mechanism 300 further includes a fire protection control valve 310. One end of the fire protection control valve 310 is connected to the water tank mechanism 200, and the other end of the fire protection control valve 310 is connected between the outlet end of the fire protection medium tank and the fourth water pump 134.

[0064] Exemplarily, by setting the fire protection control valve 310, the cooling water in the water tank mechanism 200 can be directly used as the fire protection medium when necessary, and the cooling water is conveyed to the energy storage battery box through the fire protection medium pipeline of the fire protection mechanism 300 to perform fire protection treatment on the energy storage battery box in a thermal runaway state.

[0065] Exemplarily, the fire protection mechanism 300 further includes a thermal runaway detection mechanism. The thermal runaway detection mechanism is disposed on the energy storage battery box 400 to be cooled, and the thermal runaway detection mechanism is respectively connected to the fire protection control valve 310 and the fourth water pump 134.

[0066] Exemplarily, the fire protection state of the energy storage battery box 400 to be cooled is monitored in real time through the thermal runaway detection mechanism. When the energy storage battery box 400 to be cooled is in a thermal runaway state, the fire protection control valve 310 and / or the fourth water pump 134 are controlled to convey the fire protection medium to the energy storage battery box 400 to be cooled.

[0067] Exemplarily, the thermal control and fire protection integrated device further includes a control mechanism. The control mechanism is electrically connected to the refrigeration mechanism 100, the water tank mechanism 200, and the fire protection mechanism 300 respectively.

[0068] Exemplarily, the operation of the refrigeration mechanism 100, the water tank mechanism 200, and the fire protection mechanism 300 is coordinated and controlled uniformly through the control mechanism.

[0069] Please refer to Figure 3 , Figure 3 , which is a schematic structural diagram of the fire protection mechanism and the annular medium pipeline provided by the embodiment of the present application; as Figure 3 shown, the container-type thermal control fire protection unit is the water tank mechanism 200 and the fire protection mechanism 300 in the embodiment of the present application, and the number of heat dissipation energy storage battery boxes 400 to be dissipated is multiple( Figure 3 shown as 20 energy storage battery boxes, which is only used as an example here rather than a limitation);

[0070] The water tank mechanism 200 includes an annular pipeline, which is connected to the heat dissipation energy storage battery box through the annular pipeline;

[0071] The fire protection mechanism 300 includes an annular medium pipeline, and the fire protection medium box is connected to the heat dissipation energy storage battery box through the annular medium pipeline.

[0072] Exemplarily, the pipeline of the fire protection mechanism 300 is arranged in an annular shape, which can effectively ensure the uniform distribution of the fire protection medium.

[0073] Exemplarily, the embodiment of the present application provides a distributed energy storage power station, including at least one Figures 1 to 3 shown thermal control and fire protection integrated device.

[0074] In some implementation scenarios, the thermal control and fire protection integrated device and the distributed energy storage power station provided by the embodiment of the present application are an application mode of a new type of energy storage power station, adopting a centralized thermal management system and a centralized fire protection configuration scheme, while improving the battery compartment layout of the traditional 20-foot container, removing the reserved liquid cooling system and fire protection occupied space in the container, arranging 12 clusters of battery clusters according to the maximum space capacity in the compartment, and arranging electrical supporting equipment in the remaining scattered space, maximizing the energy density of the energy storage battery compartment;

[0075] Optionally, N container-type thermal control and fire protection integrated devices can drive M large-capacity energy storage battery boxes (heat dissipation energy storage battery boxes, for example: 12 clusters of battery clusters), and the specific ratio can be adjusted according to the actual scale selection of the energy storage power station;

[0076] Example: Build an electrochemical energy storage power station with a capacity of 50MW / 100MWh, using 12 clusters of large-capacity energy storage battery boxes. The battery cells are lithium iron phosphate battery cells with a capacity of 314Ah, that is, the capacity of a single energy storage battery box is 5MWh. A total of 20 energy storage battery boxes are arranged in the whole station to meet the capacity requirement of a 100MWh energy storage power station. In addition, 1 containerized thermal control and fire protection unit is configured, which can provide cooling capacity and fire safety guarantee for 20 energy storage battery boxes. At this time, the design parameter of the containerized thermal control and fire protection unit is 1200KW of cooling capacity, which can meet the heat dissipation requirements of 20 energy storage battery boxes during full-power discharge at 0.5C. The fire protection part is designed with 300KG of fire protection medium, which can be used for precise spraying and extinguishing when a single cluster of batteries in 20 containers gets out of control. To ensure a constant cold water supply flow rate and uniform fire protection medium, the pipeline is arranged in a loop. The standard equipment layout is as Figure 3 shown;

[0077] The large-capacity energy storage container adopts a standard 20-foot container, with dimensions of 5898mm (length) x 2352mm (width) x 2393mm (height). It is equipped with 12 battery clusters, and the battery cells are selected as 314Ah battery cells. The capacity of the whole box can reach 5MWh. There are only battery compartments, power distribution equipment and auxiliary liquid cooling and fire protection pipelines in the box, and the space is compact. The layout of the large-capacity energy storage container is as Figure 4 shown, Figure 4 which is the structural schematic diagram of the energy storage battery box to be cooled provided by the embodiment of the present application;

[0078] The containerized thermal control and fire protection unit adopts a 40-foot container, and its size is exactly the same as that of two large-capacity energy storage containers arranged side by side, which is conducive to on-site layout. The thermal control and fire protection integrated unit mainly consists of a liquid cooling system and a fire protection system. The process flow is shown in the following figure. The liquid cooling system includes a chiller, a water tank, a circulation pump, a cooling tower, a monitoring instrument system, pipeline diameters, valves, etc. The working process is that the cooling water pressurized by the circulation pump is distributed through the pipeline system and then enters the cold plates in the battery PACKs in each energy storage container for heat exchange. After absorbing heat, it flows through the chiller for cooling to complete a refrigeration cycle. The chiller adopts a water-cooled condenser, that is, a cooling tower is configured for secondary heat exchange, and the heat is released into the air through means such as evaporation and convection. The liquid cooling system is also provided with a control system, which controls the start and stop of pumps, chillers, fans, etc. and the opening and closing of valves at key positions through the data collected by the instrument system. The fire protection system mainly consists of a fire protection medium box, a fire detection system, a pump group and a control system. It integrates multiple leading technologies such as real-time monitoring of multiple units, intelligent centralized management, and precise gas-liquid two-phase fire suppression at the PACK level, and can realize all-weather fire monitoring of multiple energy storage cabinets, and accurately extinguish the fire in the energy storage cabinet on fire when a fire occurs; it is equipped with a large-capacity fire extinguishing agent, which can suppress the fire in the energy storage cabinet for multiple times and for a long time.

[0079] Exemplarily, the thermal control and fire protection integrated device provided by the embodiments of the present application has at least the following beneficial effects:

[0080] 1. The external centralized cooling system and fire protection system are arranged, releasing the space of the energy storage cabin and adding 2 clusters of batteries, which can increase the energy density by about 20%;

[0081] 2. The highly integrated design saves about 15% of the station area;

[0082] 3. Centralized cooling, water-cooled condensation system, COP > 5.0, highly energy-efficient;

[0083] 4. The integrated thermal control and fire protection integrated machine design has a compact structure, is easy to maintain, and reduces the maintenance amount by about 40%;

[0084] 5. The centralized fire protection system is built with a 400L fire extinguishing agent storage tank, which can accommodate up to 600 Kg of perfluoropentanone agent at most; when taking the cluster as the protection unit, when continuously spraying perfluoropentanone for 2 minutes each time for continuous suppression and cooling, 18 sprays can be performed. If calculated according to the designed fire extinguishing concentration, the single-spray designed concentration is 6% dose, and in the case of the maximum filling dose, more than 100 sprays can be performed on a single cluster at most;

[0085] 6. It realizes a super-large-capacity fire extinguishing agent reserve, with a maximum storage volume of up to 400L and a maximum refilling mass of up to 600kg, which can meet the requirements of the new energy storage development for long-term suppression and strong extinguishing of fire safety; double protection of gas fire protection and water fire protection, when the gas fire protection dose is exhausted and the fire is still not extinguished, the water tank valve can be activated to directly cool and extinguish the fire with low-temperature water.

[0086] In all embodiments of the present application, "large" and "small" are relative, "many" and "few" are relative, and "up" and "down" are relative. For the expression methods of such relative terms, the embodiments of the present application will not elaborate further.

[0087] It should be understood that "in this embodiment", "in the embodiments of the present application" or "as an optional implementation manner" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the appearances of "in this embodiment", "in the embodiments of the present application" or "as an optional implementation manner" throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0088] In various embodiments of the present application, it should be understood that the magnitudes of the serial numbers of the above processes do not necessarily imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0089] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A thermal control and fire protection integrated device, characterized in that: Including refrigeration mechanism, water tank mechanism and fire fighting mechanism; The refrigeration mechanism includes a cooling tower and a chiller, and the cooling tower is matched with the chiller; The water tank mechanism is provided with a first inlet and outlet end and a second inlet and outlet end, the water tank mechanism is connected to the chiller through the first inlet and outlet end, and the water tank mechanism is connected to the energy storage battery box to be cooled through the second inlet and outlet end; The fire-fighting mechanism is provided with a fire-fighting medium box, and the fire-fighting medium box is respectively connected to the water tank mechanism and the energy storage battery box to be cooled.

2. The integrated thermal control and fire fighting device according to claim 1, characterized in that: The refrigeration mechanism includes a first water pump and a first sensor. The cooling tower is connected to the chiller through the first water pump. The first sensor is arranged between the cooling tower and the chiller.

3. The integrated thermal control and fire fighting device according to claim 1 or 2, characterized in that: The refrigeration mechanism further includes a second water pump and a second sensor. The chiller is connected to the first inlet end of the water tank mechanism via the second water pump. The second sensor is disposed between the chiller and the water tank mechanism.

4. The integrated thermal control and fire fighting device according to claim 1, characterized in that: The water tank mechanism comprises a third water pump and a third sensor. The water tank mechanism is connected to the energy storage battery box to be cooled by the third water pump. The third sensor is arranged between the water tank mechanism and the energy storage battery box to be cooled.

5. The integrated thermal control and fire fighting device according to claim 1, characterized in that: The fire fighting mechanism also includes a fourth water pump, and the fire fighting medium box is connected to the energy storage battery box to be cooled via the fourth water pump.

6. The integrated thermal control and fire fighting device according to claim 5, characterized in that: The fire fighting mechanism further comprises a fire fighting control valve, one end of which is connected to the water tank mechanism, and the other end of which is connected between the outlet end of the fire fighting medium tank and the fourth water pump.

7. The integrated thermal control and fire fighting device according to claim 6, characterized in that: The fire fighting mechanism further comprises a thermal runaway detection mechanism, which is arranged in the energy storage battery box to be cooled, and is respectively connected to the fire fighting control valve and the fourth water pump.

8. The integrated thermal control and fire fighting device according to claim 1, characterized in that: The integrated thermal control and fire fighting device further comprises a control mechanism, and the control mechanism is electrically connected to the refrigeration mechanism, the water tank mechanism and the fire fighting mechanism respectively.

9. The integrated thermal control and fire fighting device according to claim 1, characterized in that: The fire fighting mechanism comprises an annular medium pipeline, and the fire fighting medium box is connected to the energy storage battery box to be cooled via the annular medium pipeline.

10. A distributed energy storage power station, characterized in that: It comprises at least one integrated thermal control and fire protection device as described in any one of claims 1 to 9.

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