Integrated temperature-control and fire-protection energy storage device and containerized energy storage system

Abstract

Disclosed in the present invention are an integrated temperature-control and fire-protection energy storage device and a containerized energy storage system. The integrated temperature-control and fire-protection energy storage device comprises a battery cluster and a liquid cooling pipe group. The battery cluster comprises a plurality of battery modules, each of which is provided with a liquid inlet, a liquid outlet and a fire-protection port. The liquid cooling pipe group comprises a liquid intake pipe and a liquid return pipe, wherein the liquid intake pipe is provided with liquid-cooling liquid injection branch pipes and fire-protection liquid injection branch pipes, each liquid-cooling liquid injection branch pipe being in communication with a liquid inlet, and each fire-protection liquid injection branch pipe being in communication with a fire-protection port; and the liquid return pipe is provided with liquid-cooling liquid return branch pipes, each liquid-cooling liquid return branch pipe being in communication with a liquid outlet. The present invention uses the liquid cooling pipe group to provide fire-protection functions, so that the need for a module-level fire-protection line in the battery cluster is eliminated, temperature control and fire protection are combined to form an integrated structure, and the overall demand for fire-protection media is reduced, thereby enabling the battery cluster to have a more compact structure. Moreover, a liquid cooling medium with high specific heat capacity is used as a coolant to realize rapid fire extinguishing and cooling functions, thereby effectively preventing re-ignition.

Description

Temperature control fire integrated energy storage device and container type energy storage system TECHNICAL FIELD

[0001] The present application relates to the technical field of battery energy storage, in particular to a temperature control fire integrated energy storage device and a container type energy storage system. BACKGROUND

[0002] With the industry's increasingly clear requirements for battery energy storage safety, efficiency and life, liquid cooling systems for energy storage have become a mainstream trend. The liquid cooling solution can effectively improve the energy density of the container type energy storage system, and the structure is more compact. Compared with traditional air-cooled products, the footprint is smaller, and the construction cost can be effectively reduced. At the same time, the battery temperature control under the liquid cooling solution is more effective, and the temperature difference can be reduced to within 3℃, the system capacity and efficiency are effectively improved, and the capacity decay is delayed.

[0003] In related technologies, the battery cluster structure of the liquid-cooled battery cabin usually has two sets of pipelines, one liquid cooling pipeline and one fire extinguishing pipeline. Due to the mutual intersection between the pipelines, there is a high requirement for the space required for pipeline arrangement, the design is complex and the cost is high, which is not conducive to improving the integration. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, an embodiment of the present application proposes a temperature control fire integrated energy storage device, which combines temperature control and fire extinguishing, simplifies the structure, and has a compact layout.

[0006] The temperature control fire integrated energy storage device according to an embodiment of the present application comprises:

[0007] a battery cluster comprising a plurality of battery modules;

[0008] a liquid cooling pipe group comprising an inlet pipe and a return pipe, the inlet pipe being provided with a plurality of liquid cooling liquid injection branch pipes and a plurality of fire extinguishing liquid injection branch pipes, the plurality of liquid cooling liquid injection branch pipes and the plurality of fire extinguishing liquid injection branch pipes each corresponding to and being connected to a plurality of battery modules;

[0009] The temperature control fire integrated energy storage device has a normal mode and a fire extinguishing mode. In the normal mode, the pressure in the inlet pipe is , the battery modules are connected to the inlet pipe through the liquid cooling liquid injection branch pipes, in the fire extinguishing mode, the pressure in the inlet pipe is , the battery modules are connected to the inlet pipe through the liquid cooling liquid injection branch pipes and the fire extinguishing liquid injection branch pipes, and ;

[0010] The length of the fire extinguishing liquid injection branch pipe is defined as , the diameter of the fire-fighting injection branch pipe is defined as The friction coefficient of the fire-fighting liquid injection branch pipe is defined as , the density of the fluid in the fire-fighting injection branch is defined as , the flow rate of the fluid in the fire-fighting injection branch is defined as The height difference between the two ends of the fire-fighting liquid injection branch pipe in its length direction is defined as , the height of the battery module is defined as , then the relationship is satisfied:

[0011] .

[0012] The temperature-controlled, fire-fighting integrated energy storage device of this embodiment utilizes a liquid cooling tube assembly to provide firefighting functionality, eliminating the need for module-level firefighting piping within the battery cluster. This integrated structure combines temperature control and firefighting, reducing overall firefighting medium requirements and making the battery cluster more compact. Furthermore, the use of a high-specific-heat-capacity liquid cooling medium as the coolant enables rapid fire extinguishing and cooling, effectively preventing re-ignition.

[0013] In some embodiments, the liquid inlet and the liquid outlet of the battery module are both located at the bottom of the battery module, and the liquid inlet and the liquid outlet of the battery module are relatively arranged at the two ends of the battery module in the length direction of the battery module.

[0014] In some embodiments, the liquid inlet pipe and the liquid outlet pipe are relatively arranged on both sides of the battery module in the length direction of the battery module, the liquid inlet pipe is arranged adjacent to the liquid inlet of the battery module, and the liquid return pipe is arranged adjacent to the liquid outlet of the battery module.

[0015] In some embodiments, the fire vent of the battery module is located at the top of the battery module, and the fire vent of the battery module is located directly above the liquid inlet of the battery module.

[0016] In some embodiments, a detector is provided on the battery module, and the detector is used to detect the operating status of the battery module. The detector is located directly above the liquid outlet of the battery module.

[0017] In some embodiments, the liquid cooling injection branch pipe and the fire-fighting injection branch pipe connected to any of the battery modules share a mother pipe that is connected to the liquid inlet pipe.

[0018] In some embodiments, the plurality of battery modules are sequentially defined as a first layer of battery modules, a second layer of battery modules, and an Nth layer of battery modules from bottom to top, and the liquid cooling liquid injection branch pipe connected to the battery module in the upper layer and the fire-fighting liquid injection branch pipe connected to the battery module in the lower layer of any two adjacent layers share a common pipe in communication with the liquid inlet pipe, and the liquid cooling liquid injection branch pipe connected to the first layer of battery modules and the fire-fighting liquid injection branch pipe connected to the Nth layer of battery modules are directly in communication with the liquid inlet pipe.

[0019] In some embodiments, a control assembly is arranged on the liquid inlet pipe, the liquid return pipe, the liquid cooling liquid injection branch pipe, the fire-fighting liquid injection branch pipe, and the liquid cooling liquid return branch pipe, and the control assembly is used to control the flow of liquid in the pipeline.

[0020] In some embodiments, a pressure boosting assembly is arranged on the fire-fighting liquid injection branch pipe, and the pressure boosting assembly is used to increase the pressure of the liquid injected into the battery module by the fire-fighting liquid injection branch pipe.

[0021] Embodiments of the present application also provide a container type energy storage system with integrated temperature control and fire-fighting design.

[0022] The container type energy storage system of the embodiments of the present application comprises a box body and a plurality of temperature control and fire-fighting integrated energy storage devices as described in any of the above embodiments arranged in the box body.

[0023] The container type energy storage system of the embodiments of the present application eliminates the module level fire-fighting pipeline of the battery cluster, reduces the required amount of fire-fighting medium other than the liquid cooling medium in the battery cabin, and thus reduces the fire-fighting land occupation, so that the structure of the battery cluster and the battery cabin is more compact. BRIEF DESCRIPTION OF DRAWINGS

[0024] FIG. 1 is a schematic diagram of a temperature control and fire-fighting integrated energy storage device according to an embodiment of the present application.

[0025] FIG. 2 is a schematic diagram of the liquid flow of the temperature control and fire-fighting integrated energy storage device according to an embodiment of the present application under normal working conditions.

[0026] FIG. 3 is a schematic diagram of the liquid flow of the temperature control and fire-fighting integrated energy storage device according to an embodiment of the present application under thermal runaway conditions.

[0027] FIG. 4 is a schematic diagram of a temperature control and fire-fighting integrated energy storage device according to another embodiment of the present application.

[0028] FIG. 5 is a schematic diagram of the liquid flow of the temperature control and fire-fighting integrated energy storage device according to another embodiment of the present application under normal working conditions.

[0029] FIG. 6 is a schematic diagram of the liquid flow of the temperature control and fire-fighting integrated energy storage device according to another embodiment of the present application under thermal runaway conditions.

[0030] Fig. 7 is a schematic diagram of a container-type energy storage system according to an embodiment of the present application.

[0031] Reference signs:

[0032] battery module 1, liquid inlet pipe 2, liquid return pipe 3, liquid cooling liquid injection branch pipe 4, fire-fighting liquid injection branch pipe 5, liquid cooling liquid return branch pipe 6, detector 7,

[0033] box 100, temperature control and fire-fighting integrated energy storage device 200. Embodiment of the present application

[0034] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0035] The temperature control and fire-fighting integrated energy storage device according to an embodiment of the present application is described below in conjunction with the accompanying drawings.

[0036] As shown in Figs. 1 to 6, the temperature control and fire-fighting integrated energy storage device according to an embodiment of the present application comprises a battery cluster and a liquid cooling pipe group.

[0037] The battery cluster comprises a plurality of battery modules 1, which are spaced apart in the vertical direction. It should be noted that the plurality of battery modules 1 are placed on a battery rack (not shown in the drawings). The battery module 1 is provided with a liquid inlet, a liquid outlet and a fire-fighting port.

[0038] The liquid cooling pipe group comprises a liquid inlet pipe 2 and a liquid return pipe 3, both of which extend in the vertical direction. The liquid inlet pipe 2 is provided with a plurality of liquid cooling liquid injection branch pipes 4 and a plurality of fire-fighting liquid injection branch pipes 5, the plurality of liquid cooling liquid injection branch pipes 4 correspond to and communicate with the liquid inlets of the plurality of battery modules 1 one by one, and the plurality of fire-fighting liquid injection branch pipes 5 correspond to and communicate with the fire-fighting ports of the plurality of battery modules 1 one by one. The liquid return pipe 3 is provided with a plurality of liquid cooling liquid return branch pipes 6, which correspond to and communicate with the liquid outlets of the plurality of battery modules 1 one by one.

[0039] Among them, the cooling liquid flows in the liquid inlet pipe 2, the liquid return pipe 3, the liquid cooling liquid injection branch pipe 4, the fire-fighting liquid injection branch pipe 5 and the liquid cooling liquid return branch pipe 6, and the cooling liquid is water or water / glycol mixture with high specific heat capacity.

[0040] It can be understood that under normal working conditions, as shown in Figs. 2 and 5, the fire-fighting liquid injection branch pipe 5 is in a normally closed state, the cooling liquid in the liquid inlet pipe 2 enters the liquid cooling plate of the battery module 1 through the liquid cooling liquid injection branch pipe 4, and then enters the liquid return pipe 3 through the liquid cooling liquid return branch pipe 6 to perform liquid cooling circulation, thereby controlling the temperature of the battery module 1.

[0041] When the battery module 1 is in thermal runaway, as shown in FIG. 3 and FIG. 6, the fire-fighting liquid injection branch pipe 5 is opened, and the cooling liquid in the liquid inlet pipe 2 enters the inside of the battery module 1 through the fire-fighting liquid injection branch pipe 5 to quickly immerse the battery, achieving the functions of fire extinguishing and temperature reduction. Since the cooling liquid has high specific heat capacity, it has good temperature reduction performance, so it can continuously suppress the rekindling.

[0042] Therefore, the temperature control and fire-fighting integrated energy storage device of the embodiment of the present application provides a fire-fighting function by the liquid cooling pipe group, saves the module-level fire-fighting pipeline of the battery cluster, integrates the temperature control and fire-fighting to form an integrated structure, reduces the required amount of overall fire-fighting medium, and makes the battery cluster structure more compact. Moreover, the liquid cooling medium with high specific heat capacity is used as the cooling liquid to realize the functions of rapid fire extinguishing and temperature reduction, effectively preventing rekindling.

[0043] In addition, the temperature control and fire-fighting integrated energy storage device of the embodiment of the present application has a normal mode and a fire-fighting mode. In the normal mode, the battery module 1 normally operates, the pressure of the fluid in the liquid inlet pipe 2 is , and the battery module 1 only communicates with the liquid inlet pipe 2 through the liquid cooling liquid injection branch pipe 4. In the fire-fighting mode, the battery module 1 is in thermal runaway, the pressure in the liquid inlet pipe 2 is , and the battery module 1 communicates with the liquid inlet pipe 2 through the liquid cooling liquid injection branch pipe 4 and the fire-fighting liquid injection branch pipe 5, and the cooling liquid completely immerses the inside of the battery module 1.

[0044] Moreover, , that is, when switching from the normal mode to the fire-fighting mode, the liquid inlet pipe 2 needs to be instantaneously pressurized to ensure the timeliness and effectiveness of the fire-fighting work.

[0045] Since the branch pipe needs to be connected to each battery module 1 distributed vertically, the two ends of the branch pipe in the length direction thereof can not be at the same height, and as the pipeline grows, the pipeline flow resistance also increases. According to the Darcy-Weisbach formula, the pressure loss per unit length of the branch pipe is:

[0046] .

[0047] wherein, is the length of the branch pipe, is the diameter of the branch pipe, is the friction coefficient of the branch pipe, is the density of the fluid in the branch pipe, is the flow rate of the fluid in the branch pipe, is the pressure loss amount.

[0048] For example, the temperature control fire-fighting integrated energy storage device of the embodiment of the present application, the diameters, the pipe cross-sectional areas and the friction coefficients of the liquid cooling liquid injection branch pipe 4 and the fire-fighting liquid injection branch pipe 5 are the same, the two ends of the liquid cooling liquid injection branch pipe 4 in the length direction are at the same height, and the two ends of the fire-fighting liquid injection branch pipe 5 in the length direction are not at the same height.

[0049] The length of the liquid cooling liquid injection branch pipe 4 is defined as , and the pressure at the liquid inlet of the battery module 1 is defined as In the normal mode, the relationship is satisfied:

[0050] .

[0051] The length of the fire-fighting liquid injection branch pipe 5 is defined as , the pressure at the fire-fighting outlet of the battery module 1 is defined as , and the height difference between the two ends of the fire-fighting liquid injection branch pipe 5 in the length direction is defined as In the fire-fighting mode, the relationship is satisfied:

[0052] .

[0053] The height of the battery module 1 is defined as Since the battery module 1 is completely immersed in the cooling liquid in the fire-fighting mode, the cooling liquid is used to reduce the temperature and isolate air to prevent the battery from overheating and burning.

[0054] Therefore, the relationship is satisfied:

[0055] .

[0056] That is, the pressure at the fire-fighting outlet of the battery module 1 needs to be greater than or equal to the static pressure after the battery module 1 is completely immersed in the cooling liquid.

[0057] In summary, when the temperature control fire-fighting integrated energy storage device of the embodiment of the present application switches from the normal mode to the fire-fighting mode, the pressure increase value of the liquid inlet pipe 2 should satisfy the relationship:

[0058] .

[0059] That is,

[0060] .

[0061] Further, the pressure increasing equipment (pump) of the liquid inlet pipe 2 should satisfy that In the case of simultaneous failure of

[0062] .

[0063] For example, according to the current energy storage convention requirements, the pump should be at the conventional pressure capacity under the redundant pressure value greater than:

[0064] 。

[0065] In some embodiments, as shown in FIGS. 1-6, the liquid inlet and the liquid outlet are located at the bottom of the battery module 1, and the liquid inlet and the liquid outlet are oppositely arranged at the two ends of the battery module 1 in the length direction of the battery module 1.

[0066] It can be understood that the cooling liquid inlet and outlet are designed at the bottom of the battery module 1, so that the cooling liquid enters from the bottom of the battery module 1, ensuring that the cooling liquid is evenly distributed in the entire battery module 1. The design of the bottom flow reduces the flow resistance of the cooling liquid, so that the cooling liquid flows faster, improving the cooling efficiency.

[0067] Optionally, as shown in FIGS. 1-6, the liquid inlet pipe 2 and the liquid outlet pipe are oppositely arranged at the two sides of the battery module 1 in the length direction of the battery module 1, the liquid inlet pipe 2 is arranged adjacent to the liquid inlet, and the liquid return pipe 3 is arranged adjacent to the liquid outlet, thereby reducing the length of the liquid cooling liquid injection branch pipe 4, the fire liquid injection branch pipe 5 and the liquid cooling liquid return branch pipe 6, simplifying the structure and improving the compactness.

[0068] In some embodiments, as shown in FIGS. 1-6, the fire outlet is located at the top of the battery module 1, and the fire outlet is located directly above the liquid inlet of the battery module 1.

[0069] It can be understood that the fire liquid injection branch pipe 5 is connected at the top of the battery module 1, so that the cooling liquid is directly and evenly sprayed into the battery module 1, quickly acts on the fire source, reduces the time of fire spreading, covers more fire points, and improves the fire extinguishing effect.

[0070] In some embodiments, as shown in FIGS. 1-6, the battery module 1 is provided with a detector 7, and the detector 7 is used to detect the operating state of the battery module 1.

[0071] In other words, the detector 7 as a fire detection device of the battery module 1 includes but is not limited to a smoke detector, a temperature detector, a flame detector, a gas detector, etc., to detect temperature, smoke and flammable gas, etc.

[0072] Moreover, the detector 7 is located directly above the liquid outlet of the battery module 1. That is, the liquid cooling liquid injection branch pipe 4, the fire liquid injection branch pipe 5, the liquid cooling liquid return branch pipe 6 and the detector 7 are arranged at the circumferential side of the battery module 1 respectively, avoiding mutual interference and reasonable arrangement, further improving the compactness of the overall structure.

[0073] In some embodiments, the battery module 1 under different working conditions is communicated with the liquid cooling liquid injection branch pipe 4 and the fire liquid injection branch pipe 5 in different ways.

[0074] For example, in the case of low operating temperature of the battery module 1. As shown in FIG. 1 to FIG. 3, the liquid cooling injection branch pipe 4 and the fire injection branch pipe 5 connected to any battery module 1 share a common pipe to communicate with the liquid inlet pipe 2. That is, the single battery module 1 and the liquid cooling injection branch pipe 4 and the fire injection branch pipe 5 connected thereto are located in the same layer, which is compact in structure and convenient for installation and maintenance. When the battery module 1 is in thermal runaway, the cooling liquid in the liquid inlet pipe 2 flows upward through the fire injection branch to enter the battery module 1.

[0075] Alternatively, in the case of high operating temperature of the battery module 1. As shown in FIG. 4 to FIG. 6, a plurality of battery modules 1 are sequentially defined as first layer battery module 1, second layer battery module 1, …, Nth layer battery module 1 from bottom to top. The liquid cooling injection branch pipe 4 connected to the battery module 1 in the upper layer and the fire injection branch pipe 5 connected to the battery module 1 in the lower layer of any adjacent two layers of battery modules 1 share a common pipe to communicate with the liquid inlet pipe 2, and the liquid cooling injection branch pipe 4 connected to the first layer battery module 1 and the fire injection branch pipe 5 connected to the Nth layer battery module 1 are directly communicated with the liquid inlet pipe 2. When the battery module 1 is in thermal runaway, the cooling liquid in the liquid inlet pipe 2 flows downward through the fire injection branch to enter the battery module 1, which is more timely and rapid in response and has high reliability.

[0076] It can be understood that the above two example conditions can be considered as leading the liquid cooling injection branch pipe 4 from the liquid inlet pipe 2, and leading the fire injection branch pipe 5 from the liquid cooling injection branch pipe 4. The difference lies in that, in the case of low operating temperature of the battery module 1, the fire injection branch pipe 5 extends upward to communicate with the fire injection port of the battery module 1 in the same layer. In the case of high operating temperature of the battery module 1, the fire injection branch pipe 5 extends downward to communicate with the fire injection port of the battery module 1 in the lower layer.

[0077] Thus, the liquid cooling injection branch pipe 4 and the fire injection branch pipe 5 are reasonably arranged according to different conditions, thereby improving the multi-adaptability of the temperature control and fire integrated energy storage device of the embodiment.

[0078] In some embodiments, the liquid inlet pipe 2, the liquid return pipe 3, the liquid cooling injection branch pipe 4, the fire injection branch pipe 5 and the liquid cooling return branch pipe 6 are each provided with a control assembly (not shown in the figure), which is used to control the flow of liquid in the pipeline.

[0079] In other words, the control assembly is a device for controlling, regulating and managing the flow of liquid in the pipeline. For example, solenoid valve, control valve, regulating valve, pressure reducing valve, safety valve, ball valve, gate valve, check valve, etc., including but not limited to controlling the on-off of the pipeline, regulating the flow of medium in the pipeline, controlling the pressure of medium in the pipeline, switching the flow direction of medium in the pipeline, preventing the reverse flow of medium in the pipeline, etc.

[0080] In some embodiments, the fire-fighting liquid injection branch pipe 5 is further provided with a booster assembly (for example, a water pump) for increasing the pressure of the liquid injected into the battery module 1 by the fire-fighting liquid injection branch pipe 5, further realizing the function of rapid fire extinguishing and cooling, and improving the fire extinguishing efficiency.

[0081] The container type energy storage system according to the embodiments of the present application is described below with reference to the accompanying drawings.

[0082] As shown in FIG. 7, the container type energy storage system according to the embodiments of the present application includes a box body 100 and a plurality of temperature-controlled fire-fighting integrated energy storage devices 200 according to any one of the above embodiments arranged in the box body 100.

[0083] Optionally, the plurality of temperature-controlled fire-fighting integrated energy storage devices 200 are arranged at intervals in the battery cabin of the box body 100, the box body 100 is provided with a refrigerating unit, a delivery main pipe is connected to the cooling liquid outlet of the refrigerating unit, the liquid inlet pipes 2 of the plurality of temperature-controlled fire-fighting integrated energy storage devices 200 are in communication with the delivery main pipe, a return liquid main pipe is connected to the cooling liquid inlet of the refrigerating unit, and the return liquid pipes 3 of the plurality of temperature-controlled fire-fighting integrated energy storage devices 200 are in communication with the return liquid main pipe, so as to form a liquid cooling fire-fighting circulating loop.

[0084] The container type energy storage system according to the embodiments of the present application omits the module level fire-fighting pipeline of the battery cluster, reduces the required amount of fire-fighting medium other than the liquid cooling medium in the battery cabin, thereby reducing the fire-fighting land occupation, and making the structure of the battery cluster and the battery cabin more compact.

[0085] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential” and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0086] In addition, the terms “first” and “second” are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with “first” and “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “plurality” is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0087] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected", "connection", "fixedly connected", "connected", "fixed", and the like should be construed broadly, for example, can be fixed connection, can be detachable connection, or integral; can be mechanical connection, can be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0088] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0089] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0090] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and the changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A temperature-controlled fire-fighting integrated energy storage device, characterized in that: include: a battery cluster, the battery cluster comprising a plurality of battery modules; A liquid cooling pipe group, the liquid cooling pipe group including a liquid inlet pipe and a liquid return pipe, the liquid inlet pipe being provided with a plurality of liquid cooling injection branches and a plurality of fire-fighting injection branches, the plurality of liquid cooling injection branches and the plurality of fire-fighting injection branches corresponding one-to-one to and connected to the plurality of battery modules; The temperature control fire protection integrated energy storage device has a normal mode and a fire protection mode. In the normal mode, the pressure in the liquid inlet pipe is The battery module is connected to the liquid inlet pipe through the liquid cooling injection branch pipe. In the fire fighting mode, the pressure in the liquid inlet pipe is , the battery module is connected to the liquid inlet pipe through the liquid cooling injection branch pipe and the fire protection injection branch pipe, and ； The length of the fire-fighting liquid injection branch pipe is defined as , the diameter of the fire-fighting injection branch pipe is defined as The friction coefficient of the fire-fighting liquid injection branch pipe is defined as , the density of the fluid in the fire-fighting injection branch is defined as , the flow rate of the fluid in the fire-fighting injection branch is defined as The height difference between the two ends of the fire-fighting liquid injection branch pipe in its length direction is defined as , the height of the battery module is defined as , then the relationship is satisfied: 。 2. The temperature control and fire protection integrated energy storage device according to claim 1, characterized in that: The liquid inlet and the liquid outlet of the battery module are both located at the bottom of the battery module, and the liquid inlet and the liquid outlet of the battery module are relatively arranged at two ends of the battery module in the length direction of the battery module.

3. The temperature control and fire protection integrated energy storage device according to claim 2, characterized in that: The liquid inlet pipe and the liquid outlet pipe are relatively arranged on both sides of the battery module in the length direction of the battery module. The liquid inlet pipe is arranged adjacent to the liquid inlet of the battery module, and the liquid return pipe is arranged adjacent to the liquid outlet of the battery module.

4. The temperature control and fire protection integrated energy storage device according to claim 3, characterized in that: The fire vent of the battery module is located at the top of the battery module, and the fire vent of the battery module is located directly above the liquid inlet of the battery module.

5. The temperature control and fire protection integrated energy storage device according to claim 4, characterized in that: The battery module is provided with a detector, which is used to detect the operating status of the battery module. The detector is located directly above the liquid outlet of the battery module.

6. The temperature control and fire protection integrated energy storage device according to any one of claims 1 to 5, characterized in that: The liquid cooling injection branch pipe and the fire protection injection branch pipe connected to any one of the battery modules share a mother pipe that is connected to the liquid inlet pipe.

7. The temperature control and fire protection integrated energy storage device according to any one of claims 1 to 5, characterized in that: The multiple battery modules are defined as the first layer of battery modules, the second layer of battery modules...the Nth layer of battery modules in the direction from bottom to top. The liquid cooling injection branch pipes connected to the battery modules on the upper layer and the fire protection injection branch pipes connected to the battery modules on the lower layer in any two adjacent layers of the battery modules share a mother pipe and are connected to the liquid inlet pipe. The liquid cooling injection branch pipes connected to the battery modules on the first layer and the fire protection injection branch pipes connected to the battery modules on the Nth layer are both directly connected to the liquid inlet pipe.

8. The temperature control and fire protection integrated energy storage device according to claim 1, characterized in that: The liquid inlet pipe, the liquid return pipe, the liquid cooling liquid injection branch pipe, the fire fighting liquid injection branch pipe and the liquid cooling liquid return branch pipe are all provided with a control component, and the control component is used to control the flow of liquid in the pipeline.

9. The temperature control and fire protection integrated energy storage device according to claim 1, characterized in that: The fire-fighting liquid injection branch pipe is provided with a booster assembly, and the booster assembly is used to increase the pressure of the liquid injected into the battery module by the fire-fighting liquid injection branch pipe.

10. A containerized energy storage system, characterized in that: It comprises a box body and a plurality of temperature-controlled fire-fighting integrated energy storage devices as described in any one of claims 1 to 9 arranged in the box body.

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