Novel liquid cooling machine and fire fighting device and system for energy storage cabin

Abstract

The utility model belongs to the field of container type energy storage, and particularly relates to a novel liquid cooling machine and fire fighting device and system for an energy storage cabin, which comprises a liquid cooling machine, the output end and the input end of the liquid cooling machine and a battery pack form a closed loop through a liquid cooling pipeline to form a cooling circulation pipeline l1 for cooling liquid to flow; two nodes are sequentially arranged on the liquid cooling pipeline between the liquid cooling machine and the battery pack along the flow direction of cooling liquid, the nodes are respectively communicated with the water tank through a first immersion pipeline and communicated to the battery pack through a second immersion pipeline, and valves are arranged on the first immersion pipeline and the second immersion pipeline; compared with the prior art, cooling of the battery pack is guaranteed, fire safety of the battery pack is further guaranteed, cooling liquid is fully shared in the two parts through the design of valves and all pipelines, installation of parts is reduced, and the effects that the occupied area in the cabin is small, the water tank is convenient to install and detach, and the service life of the battery pack is prolonged are achieved. And manpower resources are saved.

Description

Technical Field

[0001] The utility model belongs to the field of container-type energy storage, and in particular relates to a novel liquid cooling machine and fire-fighting device and system for an energy storage cabin. Background Art

[0002] Energy storage systems continue to attract attention as a solution that can effectively alleviate the instability and intermittency of renewable energy, ensure grid security, improve energy efficiency, and reduce electricity costs.

[0003] Therefore, as a crucial component of the global energy transition, energy storage market demand will continue to expand as the transition progresses. Within the energy storage market, containerized products have long dominated, including both air-cooled and liquid-cooled energy storage systems.

[0004] For liquid-cooled heat dissipation energy storage systems, due to the existence of liquid cooling pipelines, the liquid cooler must be equipped with a certain capacity of coolant to carry out normal cooling circulation. In addition, for the safety of energy storage operation, it is also necessary to be equipped with an immersion fire-fighting pipeline. That is, after a fire occurs, the density of water is used to inject water into the interior of the building through the immersion fire-fighting pipeline, immersing the fire area in water to achieve the effect of extinguishing the fire.

[0005] Therefore, a large-capacity water tank is required to ensure the smooth activation of immersion firefighting. Obviously, the limited space of the energy storage container cannot meet its installation requirements. Therefore, how to ensure the normal operation of the liquid cooling cycle and the independent immersion firefighting function when the battery thermal runaway occurs is a problem worthy of research by researchers in this field. Utility Model Content

[0006] To address the above problems, the present invention proposes a new liquid cooler, fire-fighting device, and system for an energy storage compartment, including a liquid cooler, whose output and input ends form a closed loop with a battery pack through a liquid cooling pipeline, forming a cooling circulation pipeline l1 for the flow of coolant;

[0007] Along the flow direction of the coolant, two nodes are arranged successively on the liquid cooling pipeline between the liquid cooler and the battery pack. The nodes are connected to the water tank through a first submerged pipe and to the battery pack through a second submerged pipe. Valves are provided on the first submerged pipe and the second submerged pipe.

[0008] When the valve is opened, the water tank, the first immersion pipe, the liquid cooling pipe and the second immersion pipe are connected in sequence to form the immersion fire-fighting pipe L2, and the output end of the immersion fire-fighting pipe L2 is injected into the battery pack of the battery pack.

[0009] Preferably, three-way valves are provided at both nodes, and the corresponding immersion pipes are connected respectively through the three-way valves.

[0010] Preferably, the second immersion pipe is arranged in line with the liquid cooling pipeline, and the output end of the second immersion pipe is connected to the external interface of the battery pack.

[0011] Preferably, the liquid cooler is connected to the liquid cooling pipeline through a two-way valve.

[0012] Preferably, the water tank contains a water pump, and the water tank is detachably arranged on the back of the liquid cooler for performing liquid injection operations on the submerged fire-fighting pipeline 12.

[0013] Preferably, the screws pass through the mounting holes on the liquid cooler and the water tank and are connected to the nuts.

[0014] Preferably, the valve is a solenoid valve.

[0015] Preferably, a temperature detector is arranged in the battery pack for monitoring the temperature rise of the battery pack.

[0016] This application also claims protection for a new liquid cooling machine and fire-fighting system for an energy storage cabin, which uses the new liquid cooling machine and fire-fighting device, including:

[0017] A temperature sensor is provided in the battery pack, and is used to collect the battery pack temperature t1 and send a first signal to the BMS unit;

[0018] Used to detect the battery pack temperature rise K1 and send a second signal to the BMS unit;

[0019] The BMS unit is disposed in the battery pack and is used to receive the first signal and determine whether the battery pack temperature t1 is higher or lower than a preset temperature t of the BMS unit. If higher, the BMS unit controls the liquid cooler to start the cooling circulation pipe l1 to cool the battery pack.

[0020] It is used to receive the second signal and determine whether the battery pack temperature rise K1 is higher or lower than the preset temperature rise K of the liquid cooler. If it is higher, the control valve is opened, the control water tank starts the immersion fire-fighting pipeline l2 to perform fire-fighting operations on the battery pack.

[0021] Beneficial effects

[0022] 1. On the basis of retaining the cooling circulation pipeline l1 in the prior art, the present application further provides an immersed fire protection pipeline l2, which partially overlaps with the cooling circulation pipeline l1 and is controlled by a valve. Therefore, when the battery pack in the battery group 1 has thermal runaway, the valve can be opened to not only allow the coolant to flow into the thermally runaway battery pack through the second immersed pipeline flowing into the liquid cooling pipeline, but at the same time, the water tank flows into the first immersed pipeline to replenish the coolant in the liquid cooling pipeline in time to avoid the occurrence of liquid shortage in the liquid cooler. Therefore, compared with the prior art, the present application not only ensures the cooling of the battery pack, but also further ensures the fire safety of the battery pack. Moreover, through the design of the valves and various pipelines, the coolant is fully shared in both parts, reducing the installation of parts and components, resulting in a small footprint in the cabin, easy installation and disassembly of the water tank, and saving human resources.

[0023] 2. Furthermore, the present application also claims protection for a new type of liquid cooler and fire-fighting system for an energy storage cabin. The system monitors the battery pack in real time through a temperature sensor and transmits a signal to the BMS unit when an abnormality occurs during monitoring. When the BMS unit determines that an abnormality occurs, it takes corresponding measures in a timely manner. For example, when the battery pack temperature t1 is higher than the preset temperature t of the BMS unit, the liquid cooler is controlled to start the cooling circulation pipeline l1 to perform cooling operations on the battery pack; if the battery pack temperature rise K1 is higher than the preset temperature rise K of the liquid cooler, the valve is controlled to open and the water tank is controlled to start the immersion fire-fighting pipeline l2 to perform fire-fighting operations on the battery pack. This can further achieve an automated control effect, which not only reduces labor costs but also makes judgments more agile and effective.

[0024] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of a new liquid cooling machine and fire-fighting device for an energy storage cabin in an embodiment of the present utility model is shown;

[0027] Figure 2A trend diagram of a new liquid cooling machine and fire-fighting device for an energy storage cabin in an embodiment of the present utility model is shown;

[0028] Figure 3 A schematic diagram of a new liquid cooling machine and fire protection system for an energy storage cabin in an embodiment of the present utility model is shown.

[0029] In the figure,

[0030] 1. Battery pack;

[0031] 21. Liquid cooling machine; 22. Liquid cooling pipeline;

[0032] 31. First submerged pipe; 32. Second submerged pipe; 320. Valve; 34. Water tank; 340. Water pump. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0034] refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of a new liquid cooling machine and fire-fighting device for an energy storage cabin in an embodiment of the present utility model is shown; Figure 2 A trend diagram of a new liquid cooling machine and fire-fighting device for an energy storage cabin in an embodiment of the present utility model is shown;

[0035] Figure 1 It can be clearly seen that a new type of liquid cooler and fire-fighting device for an energy storage compartment includes a liquid cooler 21, whose output and input ends are connected to a liquid cooling pipe 22 and a battery pack 1 through a two-way valve to form a closed loop, forming a cooling circulation pipe l1 for the flow of coolant;

[0036] Along the coolant flow direction, two nodes are arranged successively on the liquid cooling pipeline 22 between the liquid cooler 21 and the battery pack 1. Three-way valves are provided at both nodes. They are connected to the water tank 34 through the first immersion pipe 31 and to the battery pack 1 through the second immersion pipe 32. The second immersion pipe 32 is arranged in the same manner as the liquid cooling pipeline 22, and the output end of the second immersion pipe 32 is connected to the external interface of the battery pack. Valves 320 are provided on the first immersion pipe 31 and the second immersion pipe 32.

[0037] When the valve 320 is opened, the water tank 34 , the first immersion pipe 31 , the liquid cooling pipe 22 and the second immersion pipe 32 are connected in sequence to form the immersion fire-fighting pipe 12 , and the output end of the immersion fire-fighting pipe 12 is injected into the battery pack of the battery group 1 .

[0038] On the basis of retaining the cooling circulation pipeline l1 in the prior art, the present application further provides an immersed fire protection pipeline l2, which partially overlaps with the cooling circulation pipeline l1 and is controlled by a valve 320. Therefore, when the battery pack in the battery group 1 has thermal runaway, the valve 320 can be opened, not only allowing the coolant to flow into the second immersed pipeline 32 through the liquid cooling pipeline 22 and be injected into the battery pack with thermal runaway, but at the same time, the water tank 34 flows in through the first immersed pipeline 31, replenishing the coolant to the liquid cooling pipeline 22 in time to avoid the occurrence of liquid shortage in the liquid cooler. Therefore, compared with the prior art, the present application not only ensures the cooling of the battery pack 1, but also further ensures the fire safety of the battery pack. Moreover, through the design of the valve 320 and various pipelines, the coolant is fully shared in both parts, reducing the installation of parts and components, resulting in a small footprint in the cabin, easy installation and disassembly of the water tank 34, and saving human resources.

[0039] It is worth noting that the water tank 34 and the liquid cooler 21 can be configured independently according to the actual site needs, and can be used as a whole or separately. In this application, the water tank 34 contains a water pump 340, and the water tank 34 can be detachably arranged on the back of the liquid cooler 21 for performing liquid injection operations on the submerged fire-fighting pipeline l2.

[0040] It is worth noting here that any structure on the market that can achieve detachable connection can be used for the installation of the water tank 34 and the liquid cooler 21. This application takes screws as an example. The screws pass through the mounting holes on the liquid cooler 21 and the water tank 34 and are connected to the nuts.

[0041] refer to Figure 3 , Figure 3 A schematic diagram of a new liquid cooler and fire-fighting system for an energy storage cabin in an embodiment of the utility model is shown; it can be clearly seen from the schematic diagram that the present application also claims protection for a new liquid cooler and fire-fighting system for an energy storage cabin, which uses the new liquid cooler and fire-fighting device, wherein the valve 320 is a solenoid valve, and a temperature detector is arranged in the battery pack for performing the operation of monitoring the temperature rise of the battery pack.

[0042] Also includes:

[0043] A temperature sensor is provided in the battery pack, and is used to collect the battery pack temperature t1 and send a first signal to the BMS unit;

[0044] Used to detect the battery pack temperature rise K1 and send a second signal to the BMS unit;

[0045] The BMS unit is arranged in the battery pack (1) and is used to receive a first signal and determine whether the temperature t1 of the battery pack (1) is higher or lower than a preset temperature t of the BMS unit. If higher, the liquid cooling machine (21) is controlled to start the cooling circulation pipeline l1 to perform a cooling operation on the battery pack (1);

[0046] It is used to receive a second signal and judge whether the temperature rise K1 of the battery pack is higher or lower than the preset temperature rise K of the liquid cooling machine (21). If it is higher, the control valve (320) is opened, and the control water tank (34) is used to start the flow of the immersion fire protection pipeline L2 to perform fire protection operations on the battery pack.

[0047] Furthermore, the present application also claims protection for a new type of liquid cooler and fire-fighting system for an energy storage cabin, which monitors the battery pack 1 in real time through a temperature sensor and transmits a signal to the BMS unit when an abnormality occurs during monitoring. When the BMS unit determines that an abnormality occurs, it takes corresponding measures in a timely manner. For example, when the temperature t1 of the battery pack 1 is higher than the preset temperature t of the BMS unit, the liquid cooler 21 is controlled to start the circulation of the cooling circulation pipeline l1 to perform a cooling operation on the battery pack 1; if the temperature rise K1 of the battery pack is higher than the preset temperature rise K of the liquid cooler 21, the valve 320 is controlled to open, and the water tank 34 is controlled to start the circulation of the immersion fire-fighting pipeline l2 to perform a fire-fighting operation on the battery pack, which can further achieve an automated control effect, not only reducing labor costs, but also making judgments more agile and effective.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A new type of liquid cooling machine and fire-fighting device for energy storage cabin, characterized in that: It includes a liquid cooling machine (21), the output end and the input end of which form a closed loop with the battery pack (1) through a liquid cooling pipeline (22), forming a cooling circulation pipeline for the flow of coolant l 1; Along the flow direction of the coolant, two nodes are arranged successively on the liquid cooling pipeline (22) between the liquid cooling machine (21) and the battery pack (1), and the nodes are connected to the water tank (34) through the first immersion pipe (31) and to the battery pack (1) through the second immersion pipe (32), and valves (320) are provided on the first immersion pipe (31) and the second immersion pipe (32); When the valve (320) is opened, the water tank (34), the first immersion pipe (31), the liquid cooling pipe (22) and the second immersion pipe (32) are connected in sequence to form an immersion fire protection pipe. l 2. Immersed fire protection pipeline l 2 The output terminal is injected into the battery pack of the battery group (1).

2. A new type of liquid cooling machine and fire-fighting device for an energy storage cabin according to claim 1, characterized in that: Three-way valves are provided at both nodes, and the corresponding immersion pipes are connected through the three-way valves.

3. A new type of liquid cooling machine and fire-fighting device for an energy storage cabin according to claim 1, characterized in that: The second immersion pipe (32) is arranged in line with the liquid cooling pipeline (22), and the output end of the second immersion pipe (32) is connected to the external interface of the battery pack.

4. A new type of liquid cooling machine and fire-fighting device for an energy storage cabin according to claim 1, characterized in that: The liquid cooling machine (21) is connected to the liquid cooling pipeline (22) via a two-way valve.

5. The novel liquid cooling machine and fire-fighting device for an energy storage cabin according to claim 1 is characterized in that: The water tank (34) contains a water pump (340), and the water tank (34) is detachably arranged on the back of the liquid cooling machine (21) for immersion fire protection pipelines. l 2Perform the injection operation.

6. A new type of liquid cooling machine and fire-fighting device for an energy storage cabin according to claim 5, characterized in that: The screws pass through the mounting holes on the liquid cooler (21) and the water tank (34) and are connected with the nuts.

7. The novel liquid cooling machine and fire-fighting device for an energy storage cabin according to claim 1 is characterized in that: The valve (320) is a solenoid valve.

8. The novel liquid cooling machine and fire-fighting device for an energy storage cabin according to claim 1 is characterized in that: A temperature sensor is arranged in the battery pack to monitor the temperature rise of the battery pack.

9. A new type of liquid cooling machine and fire protection system for energy storage cabin, characterized in that: The novel liquid cooling machine and fire-fighting device according to claim 8 comprises: Temperature sensor, installed in the battery pack, used to collect battery pack temperature t 1, and send a first signal to the BMS unit; Used to detect battery pack temperature rise K 1, and send a second signal to the BMS unit; A BMS unit is provided in the battery pack (1) and is used to receive a first signal and determine the temperature of the battery pack (1). t 1Above or below the BMS unit preset temperature t If it is higher than, the liquid cooler (21) is controlled to start the cooling circulation pipeline l 1 circulation, performing cooling operation on the battery pack (1); Used to receive the second signal and determine the temperature rise of the battery pack K 1 is higher or lower than the preset temperature rise of the liquid cooler (21) K If it is higher than, the control valve (320) opens, and the control water tank (34) starts the immersion fire protection pipeline l 2 circulation, perform firefighting operations on the battery pack.

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