Energy storage cooling system

Abstract

The utility model provides an energy storage cooling system which comprises a circulation pipeline and a pressure stabilizing device, and the pressure stabilizing device comprises a liquid storage device arranged above the circulation pipeline; the liquid storage device is provided with a first port and a second port, and the liquid storage device is communicated with the circulating pipeline through the first port; the breather valve is communicated with the liquid storage device through a second port, and the second port is located above the first port; when the pressure in the circulating pipeline is greater than a first pressure threshold value, the breather valve is configured to discharge gas in the liquid storage device; when the pressure in the circulating pipeline is smaller than a second pressure threshold value, the breather valve is configured to supplement gas in the liquid storage device; by means of the liquid storage device and the breather valve arranged above the circulation pipeline, gas in the circulation pipeline can be automatically released, the exhaust difficulty is lowered, cooling liquid can be continuously supplemented into the circulation pipeline, pressure balance in the energy storage cooling system is maintained, and the cooling effect and cooling efficiency of the cooling system on the energy storage system are ensured.

Description

Technical Field

[0001] The present application relates to the technical field of cooling devices, and in particular to an energy storage cooling system. Background Art

[0002] With the transformation and rapid development of energy structures, efficient, safe, and sustainable energy storage systems have become a key technology. Typically, energy storage systems are composed of batteries with high energy density and long cycle life. As energy storage system performance improves, the thermal management of batteries during high-power charging and discharging becomes increasingly prominent. Therefore, to meet the cooling requirements of energy storage systems, liquid cooling technology is often used to cool the batteries. This is used to remove the heat generated by the batteries and maintain them within a suitable operating temperature range, effectively suppressing internal heat accumulation and reducing the risk of thermal runaway in energy storage systems.

[0003] When using liquid cooling technology to cool an energy storage system, it is difficult to expel the air from the cooling system using conventional exhaust methods because the cooling system is large and has many joints and small gaps in the pipes. This may also interfere with the pressure balance within the cooling system, affecting the cooling effect and efficiency of the cooling system on the energy storage system. Utility Model Content

[0004] In view of this, the purpose of this application is to propose an energy storage cooling system to solve some or all of the technical problems mentioned above.

[0005] Based on the above objectives, the present application provides an energy storage cooling system, including a circulation pipeline and a pressure stabilizing device, wherein the pressure stabilizing device includes:

[0006] a liquid reservoir, the liquid reservoir being provided with a first port and a second port, the liquid reservoir being disposed above the circulation pipeline and being connected to the circulation pipeline through the first port; and

[0007] A breathing valve, the breathing valve is connected to the liquid reservoir through the second port, and the second port is located above the first port; wherein,

[0008] When the pressure value in the circulation pipeline is greater than the pressure threshold, the breathing valve is configured to discharge the gas in the liquid reservoir; when the pressure value in the circulation pipeline is less than the pressure threshold, the breathing valve is configured to replenish the gas in the liquid reservoir.

[0009] As can be seen from the above, the energy storage cooling system provided by the present application includes a circulation pipeline and a pressure stabilizing device, and the pressure stabilizing device includes a liquid reservoir and a breathing valve; the liquid reservoir and the breathing valve arranged above the circulation pipeline are used to automatically release the gas in the circulation pipeline, so that the gas in the circulation pipeline is discharged into the external environment through the liquid reservoir and the breathing valve, reducing the difficulty of exhaust and maintenance investment. Coolant can also be continuously added to the circulation pipeline to prevent air in the liquid reservoir from entering the circulation pipeline, which is beneficial to maintaining the pressure balance inside the energy storage cooling system, so as to ensure the cooling effect and cooling efficiency of the cooling system on the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0011] Figure 1 It is a structural diagram of the energy storage cooling system in the related art;

[0012] Figure 2 This is a schematic diagram of the structure of the energy storage cooling system in this application;

[0013] Figure 3 This is a schematic diagram of the connection between the liquid reservoir and the circulation pipeline in this application;

[0014] Figure 4 This is a schematic diagram of the connection between the liquid replenishing device and the circulation pipeline in this application;

[0015] Figure 5 This is a schematic diagram of the positional relationship between the circulation pipeline and the bracket in this application;

[0016] Figure 6 This is a schematic diagram of the application status of the energy storage cooling system in this application;

[0017] Figure 7 This is a schematic diagram of the position of the connecting portion in the liquid reservoir in this application.

[0018] Description of reference numerals:

[0019] 100, circulation pipeline; 110, cold plate; 120, branch pipeline; 130, main pipeline; 140, circulation pump; 150, second liquid replenishing valve;

[0020] 200, pressure stabilizing device; 210, liquid reservoir; 211, first port; 212, second port; 213, third port; 214, liquid level gauge; 215, connecting portion; 220, breathing valve; 230, filter assembly; 240, flexible tube; 250, first refill valve;

[0021] 300, bracket;

[0022] 400, coolant replenishing device; 410, liquid accumulator; 420, liquid injection valve; 430, liquid injection pump. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] The following combination Figure 1-Figure 7 The embodiments of the present application are described in detail.

[0026] The energy storage system is composed of batteries with high energy density and long cycle life. In order to meet the cooling effect of the energy storage system and control the cooling cost, liquid cooling technology can be used to cool the batteries in the energy storage system to maintain the batteries within a suitable operating temperature range, thereby reducing the risk of thermal runaway of the energy storage system.

[0027] in, Figure 1 It is a structural diagram of an energy storage cooling system in a related related technology;

[0028] like Figure 1As shown, the energy storage cooling system generally includes a cold plate 110, a branch pipe 120 connected to the cold plate 110 in a one-to-one correspondence, a main pipe 130 communicating with the branch pipe 120, a circulating pump 140 provided in the main pipe 130, and a second liquid replenishing valve 150 communicating with the circulating pump 140. The main pipe 130 or the branch pipe 120 is provided with an exhaust valve (not marked in the figure) for exhausting the energy storage cooling system. The energy storage liquid cooling system is generally a closed system, that is, the energy storage cooling system is filled with coolant and is completely isolated from the outside. The second liquid replenishing valve 150 can be used to fill the energy storage cooling system with excess coolant to maintain the initial pressure in the system. However, the applicant has found that the above energy storage cooling system still has the following disadvantages:

[0029] First, to exhaust the energy storage cooling system, regular manual exhaust is required during initial assembly and early stages of operation and maintenance. This involves manually opening the exhaust valve to release internal gas. Because some gas accumulates in difficult-to-escape areas, such as corners, the system needs to be run for a period of time before manual exhaust is performed again. Depending on the complexity of the energy storage cooling system, exhaust can take three months or even longer. Consequently, exhaust can last for a long time, be slow, require complex commissioning and maintenance, and require significant labor.

[0030] Secondly, the exhaust valve can be an automatic exhaust valve. Generally, the automatic exhaust valve is installed at the highest point of the energy storage cooling system to automatically exhaust the air in the energy storage cooling system. In the later stage of the operation of the energy storage cold zone system, the installation position of the automatic exhaust valve and the flow rate of the coolant have a great influence on the exhaust effect. At this time, the flow rate of the coolant in the energy storage cooling system should not be too fast to avoid the installation position of the automatic exhaust valve and the flow rate of the coolant in the energy storage cooling system being restricted. Therefore, in order to improve the exhaust efficiency, multiple automatic exhaust valves are generally used in the liquid storage cooling system, which increases the cost of the energy storage cooling system, increases the failure rate, and increases the difficulty of maintenance.

[0031] Furthermore, when the energy storage cooling system discharges gas, some coolant is ejected along with the gas, necessitating regular refilling, which consumes maintenance manpower. The refill point in related technologies is typically located at the very bottom of the storage cooling system. During the refill process, problems such as excessive water pressure and high head requirements must be overcome, resulting in relatively high energy consumption for refilling the coolant. Furthermore, air is easily introduced repeatedly during the refill process, and the flow of coolant containing air can cause drastic pressure fluctuations, making it impossible to accurately measure the pressure value in the pipeline. The pressure monitoring results remain unstable for a long time, affecting the cooling effect and efficiency of the energy storage cooling system.

[0032] In view of this, if Figure 2 and Figure 3As shown, the present application provides an energy storage cooling system, including a circulation pipeline 100 and a pressure stabilizing device 200, the pressure stabilizing device 200 includes: a liquid reservoir 210, arranged above the circulation pipeline 100; the liquid reservoir 210 is provided with a first port 211 and a second port 212, and the liquid reservoir 210 is connected to the circulation pipeline 100 through the first port 211; and a breathing valve 220, the breathing valve 220 is connected to the liquid reservoir 210 through the second port 212, and the second port 212 is located above the first port 211; wherein, when the pressure in the circulation pipeline 100 is greater than the first pressure threshold, the breathing valve 220 is configured to discharge the gas in the liquid reservoir 210; when the pressure in the circulation pipeline 100 is less than the second pressure threshold, the breathing valve 220 is configured to replenish the gas in the liquid reservoir 210.

[0033] Figure 2 This is a schematic diagram of the structure of the energy storage cooling system in this application. Figure 3 This is a schematic diagram of the connection between the liquid reservoir 210 and the circulation pipeline 100 in this application; Figure 2 and Figure 3 The energy storage cooling system provided in this application is further explained.

[0034] Specifically, the energy storage system may include a circulating pipeline 100 and a pressure stabilizing device 200 connected to each other; wherein the pressure stabilizing device 200 may include a liquid reservoir 210, the liquid reservoir 210 is provided with a first port 211 and a second port 212, the liquid reservoir 210 is arranged above the circulating pipeline 100, and is connected to the circulating pipeline 100 through the first port 211; Figure 2 The Y direction in the figure is the vertical direction. When the liquid reservoir 210 is filled with coolant, since the liquid reservoir 210 is located above the circulation pipeline 100, the vertical height of the liquid reservoir 210 is greater than the height of the top of the circulation pipeline 100. When the coolant in the circulation pipeline 100 is insufficient or underpressure occurs, the coolant in the liquid reservoir 210 can be replenished into the circulation pipeline 100 through the first port 211, thereby realizing automatic replenishment of the coolant, which is beneficial to maintaining the internal pressure of the circulation pipeline 100 and improving the cooling effect of the coolant.

[0035] In addition, the gas in the circulation pipeline 100 can move upward in the vertical direction under the action of buoyancy. When the coolant in the circulation pipeline 100 passes through its top, the gas in the circulation pipeline 100 can be discharged into the liquid reservoir 210 through the first port 211, and the first port 211 is sealed with the coolant in the liquid reservoir 210 to prevent the gas from returning into the circulation pipeline 100, which is conducive to realizing automatic discharge of gas, reducing discharge difficulty and operation and maintenance costs, and improving gas discharge efficiency.

[0036] More specifically, the pressure stabilizing device 200 further includes a breathing valve 220. Since the liquid reservoir 210 is provided with a first port 211 and a second port 212, and the second port 212 is located above the first port 211, the breathing valve 220 can be connected to the second port 212, which is conducive to replenishing or releasing gas from the liquid reservoir 210. The breathing valve 220 can control the on-off state between the liquid reservoir 210 and the external environment. That is, when the breathing valve 220 is closed, the liquid reservoir 210 can be blocked from the external environment, which is conducive to maintaining the pressure balance inside the energy storage cooling system.

[0037] In addition, since the gas is highly compressible and can easily disrupt the pressure balance of the coolant in the circulation pipeline 100, the breathing valve 220 can be used to stabilize the pressure inside the energy storage cooling system within a limited pressure range. The maximum value of the limited pressure range can be a first pressure threshold, and the minimum value can be a second pressure threshold. The actual pressure in the circulation pipeline 100 can be detected by a pressure detection device (not marked in the figure) to adjust the on / off state of the breathing valve 220.

[0038] For example, when it is detected that the pressure in the circulation pipeline 100 is greater than the first pressure threshold, the pressure in the energy storage cooling system is too high and the gas content is large, and the energy storage cooling system needs to be exhausted and depressurized. At this time, the breathing valve 220 can be opened to connect the liquid reservoir 210 with the external environment. Under the action of pressure, the gas in the circulation pipeline 100 is discharged into the liquid reservoir 210 through the first port 211, and then the gas is discharged through the breathing valve 220 to reduce the pressure in the circulation pipeline 100 until the pressure is adjusted to within the specified pressure range.

[0039] For another example, when it is detected that the pressure in the circulation pipeline 100 is less than the second pressure threshold, the pressure in the energy storage cooling system is too low and the coolant is insufficient, and the energy storage cooling system needs to be replenished and pressurized. At this time, the breathing valve 220 can be opened to connect the liquid reservoir 210 with the external environment. The gas in the external environment enters the liquid reservoir 210 through the breathing valve 220 and increases the pressure. Under the action of the internal pressure of the liquid reservoir 210, the coolant in the liquid reservoir 210 can enter the circulation pipeline 100 through the first port 211 to increase the pressure in the circulation pipeline 100 until the pressure is adjusted to within the specified pressure range.

[0040] It should be noted that the first pressure threshold can be set to be greater than the standard atmospheric pressure in the area where the energy storage cooling system is used, which is beneficial to the exhaust and pressure relief of the circulation pipeline 100; similarly, the second pressure threshold can be set to be less than the standard atmospheric pressure in the area where the energy storage cooling system is used, which is beneficial to the fluid replenishment and pressurization of the circulation pipeline 100, which will not be repeated here.

[0041] It should be noted that the liquid storage device 210 can be provided with a liquid storage container in the form of a water tank or a water tank, and its shape can be cylindrical, prism or square, etc., which will not be described in detail here.

[0042] In some embodiments, the pressure stabilizing device 200 further includes a filter assembly 230 . The filter assembly 230 is disposed at an end of the breathing valve 220 away from the first port 211 , and the filter assembly 230 is adapted to the breathing valve 220 .

[0043] Combine Figure 2 The filter assembly 230 in the voltage stabilizing structure is further described;

[0044] Specifically, in the pressure stabilizing device 200, the liquid reservoir 210 can be connected to the external environment through the breathing valve 220, and the breathing valve 220 controls the on-off state of the liquid reservoir 210; when the pressure in the circulation pipeline 100 is less than the second pressure threshold, the gas in the external environment can enter the liquid reservoir 210 through the breathing valve 220 to press the liquid in the liquid reservoir 210 into the circulation pipeline 100 and increase the pressure; due to the high content of salt, particulate matter or impurities in the application environment of the liquid storage cooling system, particulate matter or impurities enter the circulation pipeline 100. Entering the energy storage cooling system may easily cause pipeline blockage or reduce the cooling effect of the coolant; therefore, by setting the filter component 230 at the end of the breathing valve 220 away from the first port 211 and adapting it to the breathing valve 220, the gas that will pass through the breathing valve 220 can be filtered, and the wall particles and impurities will cause blockage to the breathing valve 220, the first port 211, the second port 212 and the circulation pipeline 100, ensuring the smoothness of the flow of coolant and gas, which is conducive to ensuring the cooling efficiency of the energy storage cooling system.

[0045] It should be noted that the filter component 230 mentioned above can be selected according to the specific use environment of the liquid storage cooling system; for example, the filter component 230 can be a high-strength filter mesh or salt spray-proof filter cotton, which will not be repeated here.

[0046] In some embodiments, the pressure stabilizing device 200 further includes a flexible tube 240 , an end of the flexible tube 240 being in communication with an end of the breathing valve 220 away from the first port 211 through the filter assembly 230 .

[0047] Combine Figure 2 The flexible tube 240 in the pressure stabilizing structure is further described;

[0048] Specifically, in order to further reduce the impact of particulate matter or impurities in the environment on the energy storage cooling system, a flexible tube 240 can be set in the pressure stabilizing device 200, and the end of the flexible tube 240 is connected to the end of the breathing valve 220 away from the first port 211 through the filter assembly 230; since the flexible tube 240 is soft in texture, the end of the flexible tube 240 away from the breathing valve 220 can bend downward under the action of its own gravity. At this time, particulate matter or impurities will not accumulate at the port of the flexible tube 240, ensuring the smoothness of air intake or exhaust of the pressure stabilizing device 200.

[0049] In some embodiments, the liquid reservoir 210 is further provided with a third port 213 , which is located above the second port 212 ; and the pressure stabilizing device 200 further includes a first liquid replenishing valve 250 , which is connected to the liquid reservoir 210 through the third port 213 .

[0050] Combine Figure 2 The first liquid replenishing valve 250 in the pressure stabilizing structure is further described;

[0051] Specifically, in the pressure stabilizing device 200, the liquid reservoir 210 is filled with coolant for replenishing the coolant in the circulation pipeline 100 when the pressure in the circulation pipeline 100 is less than the second pressure threshold. The liquid reservoir 210 is provided with a third port 213, through which coolant can be replenished into the liquid reservoir 210. The third port 213 is located above the first port 211, that is, the height of the third port 213 is greater than the height of the second port 212, which is conducive to reducing the injection resistance of the coolant.

[0052] In addition, the pressure stabilizing device 200 also includes a first liquid replenishing valve 250, which can be connected to the liquid reservoir 210 through the third port 213. The first liquid replenishing valve 250 can be used to control the opening and closing of the third port 213, that is, when the first liquid replenishing valve 250 is opened, the liquid reservoir 210 can be replenished with coolant.

[0053] In some embodiments, a liquid level gauge 214 is provided on the side wall of the liquid reservoir 210 , and the liquid level gauge 214 is in communication with the liquid reservoir 210 .

[0054] Among them, combined Figure 2 Further explanation of the liquid level gauge 214 in the energy storage cooling system;

[0055] Specifically, since the liquid reservoir 210 can replenish the cooling liquid to the circulation pipeline 100 and maintain the pressure balance in the circulation pipeline 100, the liquid reservoir 210 should always contain the cooling liquid at a calibrated level; therefore, the liquid level gauge 214 provided on the side wall of the liquid reservoir 210 can measure the liquid level of the cooling liquid in the liquid reservoir 210, so that the staff can understand the liquid level status in the liquid reservoir 210 and can replenish the cooling liquid in time to ensure the cooling efficiency of the liquid storage cooling system.

[0056] In some embodiments, a side wall of the liquid reservoir 210 is provided with a viewing window (not marked in the figure), and the viewing window extends in a vertical direction.

[0057] Specifically, for the liquid reservoir 210, by setting a visual window on the side wall of the liquid reservoir 210, it is convenient for the staff to observe the inside of the liquid reservoir 210. For example, through the visual window, it can be observed whether there is sufficient coolant inside the liquid reservoir 210, and it can also be determined whether there is a problem of excessive pressure in the circulation pipeline 100 or whether the first port 211 is blocked by observing the bubbles discharged from the first port 211; in addition, the visual window can be extended in the vertical direction, which is conducive to expanding the observation range of the inside of the liquid reservoir 210.

[0058] In some embodiments, the circulation pipeline 100 includes: multiple cold plates 110, where two adjacent cold plates 110 are arranged in parallel; multiple branch pipes 120, where any branch pipe 120 is connected to a cold plate 110, and the liquid reservoir 210 is connected to the branch pipe 120 at the top of the circulation pipeline 100 through the first port 211; and a main pipe 130, which is connected to the multiple branch pipes 120.

[0059] Among them, combined Figure 2 and Figure 3 The circulation pipeline 100 is further described;

[0060] Specifically, the energy storage cooling system includes a circulation pipeline 100, which can circulate the coolant inside it, remove the heat transferred to the coolant, and achieve heat dissipation and cooling of the energy storage system; wherein, the circulation pipeline 100 may include multiple cold plates 110 arranged in parallel. For example, multiple cold plates 110 can be arranged at intervals in the vertical direction to provide installation locations and heat dissipation areas for batteries in the energy storage system; two adjacent cold plates 110 can be arranged in parallel, which is conducive to improving the neatness of the arrangement of the cold plates 110, facilitating the allocation and distribution of branch pipes 120, and also facilitating the placement of batteries;

[0061] The circulation pipeline 100 may further include a plurality of branch pipes 120 , wherein each branch pipe 120 may be connected to a cold plate 110 , that is, each branch pipe 120 may serve as a delivery pipe for a cold plate 110 and is used to continuously deliver coolant to the cold plate 110 to ensure a cooling effect on the battery;

[0062] In addition, the circulation pipeline 100 can also include a main pipeline 130, wherein each branch pipeline 120 can be connected to the main pipeline 130, which is conducive to centralized delivery of coolant to multiple branch pipelines 120, and also facilitates the collection of coolant output by multiple branch pipelines 120, which is conducive to centralized heat dissipation of batteries on multiple cold plates 110 and ensures that the coolant can circulate stably in the circulation pipeline 100.

[0063] In some embodiments, the circulation pipeline 100 further includes a circulation pump 140 , which is in communication with the trunk pipeline 130 ; and a second liquid replenishing valve 150 , which is in communication with the circulation pump 140 .

[0064] Among them, combined Figure 2 The circulation pipeline 100 in the energy storage cooling system is further described;

[0065] Specifically, when the energy storage cooling system is used to cool the energy storage system, the coolant in the circulation pipeline 100 needs to be transported and circulated so that the coolant can remove the heat generated by the batteries in the energy storage system. The circulation pipeline 100 includes a circulation pump 140, which is connected to the main pipeline 130 and is used to drive the coolant to flow in the circulation pipeline 100 to transport the coolant to the cold plate 110. The batteries located on the cold plate 110 transfer heat to the coolant flowing through the cold plate 110, and the coolant then removes the heat generated by the batteries, so that the energy storage system can operate in a stable environment.

[0066] In addition, the energy storage cooling system also includes a second liquid replenishing valve 150, which is connected to the liquid inlet end of the circulation pump 140. When the energy storage cooling system has a large demand for coolant, the second liquid replenishing valve 150 can be opened to replenish coolant to the circulation pipeline 100, thereby improving the replenishment efficiency of the coolant and shortening the replenishment time; and when the circulation pump 140 is used to circulate the coolant, the second liquid replenishing valve 150 can be kept closed to prevent the coolant from leaking.

[0067] in, Figure 4 Schematic diagram of the connection between the liquid replenishing device and the circulation pipeline 100 in this application;

[0068] For example, Figure 4As shown, when the energy storage cooling system is activated for the first time, the energy storage cooling system can be connected to a coolant replenishing device 400; wherein, the coolant replenishing device 400 may include a liquid reservoir 410, a liquid injection valve 420 and a liquid injection pump 430, the liquid reservoir 210 is connected to one end of the liquid injection valve 420, and the liquid injection pump 430 is connected to the other end of the liquid injection valve 420.

[0069] When implementing it specifically, Figure 4 As shown, the liquid outlet of the coolant replenishing device 400 can be connected to the liquid inlet of the second liquid replenishing valve 150, the liquid filling valve 420, the second liquid replenishing valve 150 and the breathing valve 220 are opened, and the liquid filling pump 430 is controlled to start. The liquid filling pump 430 can transport the coolant in the reservoir 410 to the circulation pipeline 100 to transport the coolant to the circulation pipeline 100 and fill the interior thereof, and part of the coolant can enter the reservoir 210 through the first port 211. When the coolant in the reservoir 210 reaches the calibrated liquid level of the reservoir 210, the liquid replenishment is stopped, the second liquid replenishing valve 150 and the breathing valve 220 are closed, and the coolant replenishing device 400 is removed.

[0070] After the coolant is replenished, the circulation pump 140 is controlled to start and drive the coolant to flow in the circulation pipeline 100. When the bubbles flow with the coolant and pass through the first port 211, they will enter the liquid reservoir 210 under the action of buoyancy. After accumulating a certain amount, they can be discharged through the opened breathing valve 220, realizing the automatic exhaust function and eliminating manual maintenance operations.

[0071] In some embodiments, the energy storage cooling system further includes a bracket 300 , a liquid reservoir 210 is disposed on the top of the bracket 300 , and a plurality of cold plates 110 are vertically spaced apart and disposed on the bracket 300 .

[0072] in, Figure 5 Schematic diagram of the positional relationship between the circulation pipeline 100 and the bracket 300 in this application. Figure 6 This is a schematic diagram of the application status of the energy storage cooling system in this application; Figure 5 and Figure 6 The bracket 300 in the energy storage cooling system is further described.

[0073] Specifically, the energy storage cooling system is mainly used to cool the batteries in the energy storage system, so that the heat generated by the batteries can be transferred and dissipated in time, providing a good temperature environment for the energy storage system; wherein, the liquid reservoir 210 in the voltage stabilizing device 200 is arranged on the top of the bracket 300, and the bracket 300 supports the liquid reservoir 210, which is conducive to the timely replenishment of the coolant in the liquid reservoir 210 into the circulation pipeline 100, and is also conducive to the discharge of the gas in the circulation pipeline 100 into the liquid reservoir 210 through the first port 211 to ensure the cooling capacity of the coolant; multiple cold plates 110 are arranged on the bracket 300 at intervals in the vertical direction, and the cold plates 110 are supported by the bracket 300; when cooling the batteries in the energy storage system, the batteries can be placed on the cold plates 110. By arranging the cold plates 110 on the bracket 300, the support capacity of the energy storage cooling system for the batteries is improved.

[0074] It should be noted that the bracket 300 mentioned above can be formed of a material with high strength and good thermal conductivity. On the one hand, it can ensure the support effect of the energy storage cooling system and the battery, and on the other hand, it can also assist the energy storage cooling system in dissipating heat into the atmospheric environment. No further details will be given here.

[0075] In some embodiments, a connecting portion 215 is provided at the bottom of the liquid reservoir 210 , and the liquid reservoir 210 is fixedly connected to the top of the bracket 300 via the connecting portion 215 .

[0076] in, Figure 7 This is a schematic diagram of the structure of the liquid reservoir 210 and the connecting portion 215 in this application; Figure 7 The connection portion 215 at the bottom of the liquid reservoir 210 is further described.

[0077] Specifically, the liquid reservoir 210 in the pressure stabilizing device 200 is disposed on the top of the bracket 300, and the circulation pipeline 100 is disposed on the bracket 300 and adapted to the bracket 300, so that automatic exhaust and automatic liquid replenishment of the liquid storage cooling system can be achieved through the pressure stabilizing device 200, which is conducive to maintaining the cooling effect of the coolant; therefore, the liquid reservoir 210 can be fixedly connected to the top of the bracket 300, wherein, by providing a connecting portion 215 at the bottom of the liquid reservoir 210, it is convenient to fix the liquid reservoir 210 to the top of the bracket 300 by welding or bolting, thereby improving the installation stability and reliability of the pressure stabilizing device 200;

[0078] For example, the connecting portion 215 can be provided in a protruding manner at the bottom of the liquid reservoir 210, and a groove portion (not marked in the figure) can be provided at the top of the bracket 300 to facilitate the positioning and installation of the liquid reservoir 210, reduce the difficulty of installing the liquid reservoir 210, and also help to improve the stability of the installation of the liquid reservoir 210.

[0079] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0080] The various embodiments in this application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0081] The description of this application is provided for purposes of illustration and description and is not intended to be exhaustive or to limit the application to the disclosed form. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the application and to enable those skilled in the art to understand the application and design various embodiments with various modifications suitable for specific applications.

[0082] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0083] While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0084] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. An energy storage cooling system, characterized in that: It includes a circulation pipeline and a pressure stabilizing device, and the pressure stabilizing device includes: a liquid reservoir disposed above the circulation pipeline; the liquid reservoir is provided with a first port and a second port, and the liquid reservoir is connected to the circulation pipeline through the first port; and A breathing valve, the breathing valve is connected to the liquid reservoir through the second port, and the second port is located above the first port; wherein, When the pressure in the circulation pipeline is greater than a first pressure threshold, the breathing valve is configured to discharge the gas in the liquid reservoir; when the pressure in the circulation pipeline is less than a second pressure threshold, the breathing valve is configured to replenish the gas in the liquid reservoir.

2. The energy storage cooling system according to claim 1, characterized in that: The voltage stabilizing device further comprises: The filter assembly is arranged at one end of the breathing valve away from the first port, and the filter assembly is adapted to the breathing valve.

3. The energy storage cooling system according to claim 2, characterized in that: The voltage stabilizing device further comprises: A flexible tube, an end of which is communicated with an end of the breathing valve away from the first port through the filter assembly.

4. The energy storage cooling system according to claim 1, characterized in that: The liquid reservoir is further provided with a third port, the third port being located above the second port; and The pressure stabilizing device further includes a first liquid replenishing valve, which is connected to the liquid reservoir through the third port.

5. The energy storage cooling system according to claim 1, characterized in that: A liquid level gauge is provided on the side wall of the liquid reservoir, and the liquid level gauge is communicated with the liquid reservoir.

6. The energy storage cooling system according to claim 1, characterized in that: The side wall of the liquid reservoir is provided with a viewing window, and the viewing window extends in a vertical direction.

7. The energy storage cooling system according to claim 1, characterized in that: The circulation pipeline comprises: A plurality of cold plates, wherein two adjacent cold plates are arranged in parallel; a plurality of branch pipes, any one of the branch pipes being in communication with one of the cold plates, the liquid reservoir being in communication with the branch pipe at the top of the circulation pipeline through the first port; and The trunk pipeline is connected with the plurality of branch pipelines.

8. The energy storage cooling system according to claim 7, characterized in that: The circulation pipeline also includes: a circulation pump, the circulation pump being in communication with the trunk pipeline; A second liquid replenishing valve is connected to the circulation pump.

9. The energy storage cooling system according to claim 7, characterized in that: Also includes: The support is provided with the liquid reservoir on the top of the support, and the plurality of cold plates are arranged on the support at intervals along the vertical direction.

10. The energy storage cooling system according to claim 9, characterized in that: A connecting portion is provided at the bottom of the liquid reservoir, and the liquid reservoir is fixedly connected to the top of the bracket through the connecting portion.

Images