Collecting device and energy storage system
By designing a collection device for liquid cooling system, the problem of coolant polluting the environment during leakage of liquid cooling system is solved, and the effective collection and separation of coolant is achieved, and environmental pollution is avoided.
Patent Information
- Application Number
- CN202411570134.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-11-02
- Filing Date
- 2024-11-01
- Publication Date
- 2025-05-06
AI Technical Summary
When the existing liquid-cooling system leaks, the coolant is discharged directly to the environment, polluting the environment, and the mixing of rainwater and coolant leads to pollution problems.
A collection device is designed, including a first collection tank, a first discharge device and a second discharge device, for collecting the coolant leaked from the liquid coolant unit and the water entering the liquid coolant compartment, and separating the rainwater and coolant through a valve control to achieve separate discharge of rainwater and avoiding the coolant from polluting the environment.
Effectively collect and separate the coolant and water leaked from the liquid cooler unit to prevent the coolant from being discharged to the environment and thus prevent environmental pollution.
Smart Images
Figure CN119934762A_ABST
Abstract
Description
[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on November 2, 2023, with application number 202311465527.7 and invention name “Collection device and energy storage system”, the entire contents of which are incorporated by reference in this application. Technical Field
[0002] The present application relates to the field of energy storage technology, and more specifically, to a collection device and an energy storage system. Background Art
[0003] In energy storage systems, liquid cooling systems are usually used for heat dissipation. In a liquid cooling system, the liquid cooling unit cools by exchanging heat with the external environment to obtain coolant at a lower temperature. Liquid cooling units are mostly installed in non-sealed liquid cooling unit cabins. If the liquid cooling unit leaks, the leaked coolant will be directly discharged into the environment.
[0004] The coolant is usually toxic, so the coolant discharged into the environment will pollute the environment. In order to prevent the coolant from polluting the environment, a coolant collection device is usually added to the bottom of the liquid cooling unit cabin.
[0005] The coolant collection device collects rainwater while collecting coolant. The rainwater can be discharged directly into the environment, but rainwater is easy to mix with coolant, and coolant will also be discharged into the environment, polluting the environment. Summary of the invention
[0006] In view of this, the purpose of the present application is to provide a collection device and an energy storage system that can collect the coolant leaked from the liquid-cooled unit and the water that enters the liquid-cooled unit cabin. At the same time, it can separate rainwater and coolant to discharge rainwater separately, so as to avoid the coolant being discharged into the environment, thereby avoiding the coolant from polluting the environment.
[0007] In order to achieve the above objectives, this application provides the following technical solutions:
[0008] A collecting device, comprising:
[0009] A first collecting tank, which is used to be arranged in the liquid cooling unit cabin, and the first collecting tank can collect the coolant leaked from the liquid cooling unit and the water entering the liquid cooling unit cabin;
[0010] a first discharge device, wherein the inlet of the first discharge device is connected to the first collecting tank, and the first discharge device is used to discharge the water in the first collecting tank to the outside of the liquid cooling unit cabin;
[0011] A second discharge device and a second collecting tank, wherein the inlet of the second discharge device is connected to the first collecting tank, and the second discharge device is used to discharge the liquid including the coolant in the first collecting tank to the second collecting tank.
[0012] Optionally, the second discharge device includes: a discharge port arranged in the first collecting tank, and a valve for controlling the opening and closing of the discharge port; wherein the discharge port is connected to the first collecting tank.
[0013] Optionally, the collecting device further comprises a first detecting device, and the first detecting device is used to detect whether there is coolant in the first collecting tank;
[0014] Wherein, if there is coolant in the first collecting tank, the valve is in an open state; if there is no coolant in the first collecting tank, the valve is in a closed state.
[0015] Optionally, the first detection device is a color detection device, and the color detection device is used to detect whether there is coolant in the first collecting tank by detecting whether there is coolant color in the first collecting tank;
[0016] Alternatively, the first detection device is a refractive index detection device, and the refractive index detection device is used to detect whether there is cooling liquid in the first collecting tank by detecting whether the refractive index of the liquid in the first collecting tank is within a preset range.
[0017] Optionally, the inlet of the first discharge device is higher than the inlet of the second discharge device;
[0018] The collecting device also includes a second detection device, which is used to detect the pressure at the valve; if the pressure at the valve is greater than P 1 , the valve is in the open state; if the pressure at the valve is not greater than P 1 , the valve is in a closed state;
[0019] When the water level in the first collecting tank reaches the inlet of the first discharge device, the pressure at the valve is P 1 .
[0020] Optionally, the inlet of the first discharge device is higher than the inlet of the second discharge device;
[0021] The valve is an automatic valve. If the pressure at the valve is greater than P 1 , the valve is in the open state; if the pressure at the valve is not greater than P 1 , the valve is in a closed state;
[0022] When the water level in the first collecting tank reaches the inlet of the first discharge device, the pressure at the valve is P 1 .
[0023] Optionally, the second discharge device further includes a second discharge pipe, the discharge port is an inlet of the second discharge pipe, and the valve is arranged on the second discharge pipe.
[0024] Optionally, the inlet of the second discharge device is located at the bottom of the first collecting tank.
[0025] Optionally, the first discharge device includes a first discharge pipe, the inlet of the first discharge pipe is connected to the first collecting tank, the outlet of the first discharge pipe extends to the outside of the liquid cooling unit cabin, and the inlet of the first discharge pipe is higher than the inlet of the second discharge device.
[0026] Optionally, the first discharge device includes a first discharge pipe and a discharge hole;
[0027] Wherein, the discharge hole is arranged at the bottom of the liquid cooling unit cabin;
[0028] The first discharge pipe is located in the liquid cooling unit cabin; the inlet of the first discharge pipe is connected to the first collecting tank, and the outlet of the first discharge pipe is located outside the first collecting tank and outside the second collecting tank, and the outlet of the first discharge pipe is connected to the discharge hole; the inlet of the first discharge pipe is higher than the inlet of the second discharge device.
[0029] Optionally, the first collecting tank and the second collecting tank are split structures.
[0030] Optionally, the first collecting tank and the second collecting tank are an integrated structure.
[0031] Optionally, the second collecting tank is used to be arranged in the liquid cooling unit cabin, and the second collecting tank is located at the bottom of the first collecting tank.
[0032] Optionally, the outer wall of the first collecting tank is sealedly connected to the inner wall of the liquid cooling unit compartment.
[0033] Based on the collection device provided above, the present application also provides an energy storage system, which includes: a liquid cooling unit cabin, a liquid cooling unit arranged in the liquid cooling unit cabin, and any of the collection devices described above.
[0034] The working principle of the collection device provided in this application is as follows:
[0035] The collecting device is applied to a liquid-cooled unit cabin of a non-sealed structure. When the liquid-cooled unit does not leak and water enters the liquid-cooled unit cabin, the first collecting tank collects the water entering the liquid-cooled unit cabin, that is, the liquid in the first collecting tank is all water. In this case, the water can be discharged to the outside of the liquid-cooled unit cabin through the first discharge device; when the liquid-cooled unit leaks and water does not enter the liquid-cooled unit cabin, the first collecting tank collects the coolant leaked from the liquid-cooled unit, that is, the liquid in the first collecting tank is all coolant. In this case, at least part of the coolant in the first collecting tank can be discharged to the outside of the liquid-cooled unit cabin through the second discharge device. The second collecting tank, the coolant is collected in the first collecting tank and the second collecting tank, or the coolant is collected in the second collecting tank, and the coolant will not be discharged from the outside of the liquid-cooled unit cabin; when the liquid-cooled unit leaks and water enters the liquid-cooled unit cabin, the liquid in the first collecting tank is a mixture of coolant and water. In this case, at least part of the mixed liquid in the first collecting tank is discharged to the second collecting tank through the second discharge device, and the mixed liquid is collected in the first collecting tank and the second collecting tank, or the mixed liquid is collected in the second collecting tank, and the coolant will not be discharged from the outside of the liquid-cooled unit cabin.
[0036] From the working principle of the above-mentioned collecting device, it can be known that the above-mentioned collecting device can collect the coolant leaked from the liquid-cooled unit and the water entering the liquid-cooled unit cabin. At the same time, it can separate rainwater and coolant to discharge rainwater separately, avoiding the coolant from being discharged to the outside of the liquid-cooled unit cabin, thereby avoiding the coolant from polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0038] Figure 1 A schematic diagram of the structure of the collection device provided in Example 1 of the present application;
[0039] Figure 2 A schematic diagram of the structure of a collection device provided in Example 2 of the present application;
[0040] Figure 3 A schematic diagram of the structure of a collection device provided in Example 3 of the present application;
[0041] Figure 4 Another structural schematic diagram of the collection device provided in Example 3 of the present application.
[0042] Description of reference numerals:
[0043] 1 is an energy storage box, 11 is a liquid cooling unit cabin, 12 is a vent, 2 is a liquid cooling unit, 3 is a first collecting tank, 31 is a connecting portion, 32 is a collecting portion, 4 is a second collecting tank, 5 is a first discharge pipe, 6 is a second discharge pipe, 7 is a valve, and 8 is a discharge hole;
[0044] 01 is a collecting tank, 011 is a first collecting chamber, 012 is a second collecting chamber, and 02 is a partition. DETAILED DESCRIPTION
[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.
[0047] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.
[0048] The multiple involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first", "second", etc. are only used for the purpose of distinguishing the description, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.
[0049] Compared with air cooling, liquid cooling has higher heat dissipation efficiency, lower noise, higher stability and wider application range in energy storage systems. Therefore, liquid cooling systems are increasingly used in energy storage systems.
[0050] As the source of the entire liquid cooling system, the liquid cooling unit cools by exchanging heat with the external environment to obtain coolant at a lower temperature. Most liquid cooling units are installed in non-sealed liquid cooling unit cabins. If the liquid cooling unit leaks, the leaked coolant will be directly discharged into the environment.
[0051] The coolant is mostly ethylene glycol or a mixture of ethylene glycol and water, and ethylene glycol is toxic, so the coolant discharged into the environment will pollute the environment. In order to prevent the coolant from polluting the environment, a coolant collection device is usually added to the bottom of the liquid cooling unit cabin.
[0052] The coolant collection device collects rainwater while collecting coolant, and the rainwater can be directly discharged into the environment. However, rainwater is easy to mix with coolant, and coolant will also be discharged into the environment, polluting the environment.
[0053] Based on the above problems, an embodiment of the present application provides a collection device and an energy storage system, which can collect coolant leaked from the liquid-cooled unit and water entering the liquid-cooled unit cabin. At the same time, it can separate rainwater and coolant to discharge rainwater separately, so as to avoid coolant being discharged into the environment, thereby preventing the coolant from polluting the environment.
[0054] To facilitate understanding of the present application, the energy storage system provided in an embodiment of the present application is first introduced below.
[0055] like Figure 1-Figure 4 As shown, the energy storage system includes: a liquid cooling unit cabin 11, a liquid cooling unit 2 arranged in the liquid cooling unit cabin 11, and a collection device arranged in the liquid cooling unit cabin 11.
[0056] The liquid cooling unit cabin 11 is located in the energy storage box 1, and the energy storage box 1 may be the outer shell of the entire energy storage system.
[0057] It should be noted that a battery compartment (not shown in the figure) is also provided in the energy storage box 1, and batteries and other devices are installed in the battery compartment. Of course, the battery and the liquid cooling unit 2 can also be arranged in the same compartment, which is not limited in the embodiment of the present application.
[0058] The liquid cooling unit cabin 11 has a vent 12 to allow the liquid cooling unit 2 to exchange heat with the external environment of the liquid cooling unit cabin 11. It is understandable that the vent 12 is provided on the energy storage box 1. In order to facilitate ventilation, the vent 12 can be selected to be located at the top of the energy storage box 1, that is, the vent 12 is located at the top of the liquid cooling unit cabin 11. Rainwater, snow water and other water will enter the liquid cooling unit cabin 11 through the vent 12.
[0059] The liquid cooling unit 2 provides a suitable operating temperature environment for the entire energy storage system.
[0060] The collecting device is located at the bottom of the liquid cooling unit 2. The collecting device is used to collect water entering the liquid cooling unit cabin 11 and the coolant leaked from the liquid cooling unit 2. The collecting device is also used to separate rainwater and coolant and discharge rainwater without discharging coolant during the process of discharging rainwater.
[0061] The collection device is described in detail below in conjunction with three embodiments.
[0062] Embodiment 1
[0063] like Figure 1 As shown, the collecting device provided in the first embodiment includes a first collecting tank 3, a second collecting tank 4, a first discharge pipe 5, a second discharge pipe 6 and a valve 7. The first collecting tank 3 and the second collecting tank 4 are two separate components.
[0064] The first collecting tank 3 is located at the bottom of the liquid cooling unit 2 to ensure that the coolant leaked from the liquid cooling unit 2 is collected. The size of the first collecting tank 3 needs to be set according to the leakage range of the coolant in the liquid cooling unit 2. In order to improve the collection reliability, the inner wall of the notch of the first collecting tank 3 can be selected to be located at the periphery of the liquid cooling unit 2, so that if there is a leak at any position of the liquid cooling unit 2, the first collecting tank 3 can collect the leaked coolant.
[0065] The first collecting tank 3 is also located at the bottom of the vent 12 of the liquid cooling unit compartment 11 to ensure that the first collecting tank 3 collects water entering from the vent 12. In order to ensure that the first collecting tank 3 collects all the water entering from the vent 12, the inner wall of the slot of the first collecting tank 3 can be selected to be located outside the vent 12.
[0066] Based on the above-mentioned requirements for the slot of the first collecting tank 3, in order to simplify the design, the side wall of the first collecting tank 3 and the inner wall of the liquid cooling unit compartment 11 can be selected to be sealed and connected, so as to ensure that the water entering from the ventilation port 12 and the coolant leaked from the liquid cooling unit 2 all enter the first collecting tank 3.
[0067] In order to facilitate the installation of the first collecting tank 3, the first collecting tank 3 may include a connecting portion 31 and a collecting portion 32, wherein the connecting portion 31 is sleeve-shaped, the collecting portion 32 is groove-shaped, the top end of the connecting portion 31 is sealed and connected to the inner wall of the liquid cooling unit cabin 11, the bottom end of the connecting portion 31 is sealed and connected to the collecting portion 32, the connecting portion 31 and the collecting portion 32 are connected, and there is a gap between the collecting portion 32 and the inner wall of the liquid cooling unit cabin 11. It can be understood that, taking the example that the end faces of the connecting portion 31 and the collecting portion 32 are both circular, the diameter of the top end of the connecting portion 31 is greater than the diameter of the collecting portion 32; taking the example that the end faces of the connecting portion 31 and the collecting portion 32 are both rectangular, the length of the connecting portion 31 is greater than the length of the collecting portion 32, and the width of the connecting portion 31 is greater than the width of the collecting portion 32.
[0068] In order to facilitate the liquid on the inner wall of the connecting portion 31 to flow to the collecting portion 32, the inner cavity of the connecting portion 31 is a tapered structure, that is, the inner cavity of the connecting portion 31 is tapered from the top end of the connecting portion 31 to the bottom end of the connecting portion 31. The shape of the inner wall of the connecting portion 31 is selected according to actual conditions, and this embodiment 1 does not limit this.
[0069] The inlet of the first discharge pipe 5 is connected to the first collecting tank 3, and the outlet of the first discharge pipe 5 extends to the outside of the liquid cooling unit cabin 11, so that the first discharge pipe 5 is used to discharge the water in the first collecting tank 3 to the outside of the liquid cooling unit cabin 11. It can be understood that: if there is no coolant in the first collecting tank 3 (for example, there is only water in the first collecting tank 3), the water in the first collecting tank 3 is discharged to the outside of the liquid cooling unit cabin 11 through the first discharge pipe 5.
[0070] It can be understood that there is a first preset distance H between the inlet of the first discharge pipe 5 and the bottom of the first collecting tank 3. 0 The inlet of the first discharge pipe 5 is higher than the bottom of the first collecting tank 3; when the liquid level in the first collecting tank 3 reaches H 0 When the water is discharged to the outside of the liquid cooling unit compartment 11 through the first discharge pipe 5.
[0071] It should be noted that the first discharge pipe 5 is a structure of the first discharge device, the inlet of the first discharge pipe 5 is the inlet of the first discharge device, and the first discharge pipe 5 realizes the function of the first discharge device.
[0072] The second collecting tank 4 is located in the liquid cooling unit cabin 11, and the second collecting tank 4 is located at the bottom of the first collecting tank 3, and is used to collect liquid including coolant. It can be understood that the liquid including coolant is coolant, or a mixture of coolant and water.
[0073] In actual situations, the second collection tank 4 may be located at other positions of the first collection tank 3; the second collection tank 4 may also be arranged in other cabins or outside the liquid cooling unit cabin 11, which is not limited in the first embodiment.
[0074] The size and shape of the second collecting tank 4 and the first collecting tank 3 are selected according to actual conditions, and this embodiment 1 does not limit this.
[0075] The inlet of the second discharge pipe 6 is connected to the first collecting tank 3, and the second discharge pipe 6 is used to discharge the liquid including the coolant in the first collecting tank 3 to the second collecting tank 4, and the inlet of the second discharge pipe 6 is located at the bottom of the first collecting tank 3. The inlet of the first discharge pipe 5 is higher than the inlet of the second discharge pipe 6.
[0076] The valve 7 is disposed on the second discharge pipe 6, and the valve 7 is used to control the on-off of the second discharge pipe 6. It can be understood that if there is coolant in the first collection tank 3, the liquid (coolant, or a mixture of coolant and water) in the first collection tank 3 is discharged into the second collection tank 4 through the second discharge pipe 6 and the valve 7.
[0077] When the valve 7 is in the open state, the second discharge pipe 6 is connected, and the liquid including the coolant in the first collecting tank 3 is discharged to the second collecting tank 4 through the second discharge pipe 6; when the valve 7 is in the closed state, the second discharge pipe 6 is not connected, and the liquid in the first collecting tank 3 will not enter the second collecting tank 4.
[0078] It can be understood that the combination of the second discharge pipe 6 and the valve 7 is a structure of the second discharge device. The second discharge pipe 6 and the valve 7 cooperate to realize the function of the second discharge device. The inlet of the second discharge pipe 6 can be understood as the inlet of the second discharge device.
[0079] In actual situations, the second discharge device may also be selected to have other structures, for example, the second discharge device includes a discharge port and the above-mentioned valve 7, the discharge port is arranged at the first collecting tank 3, the valve 7 is arranged at the discharge port, and the valve 7 controls the opening and closing of the discharge port. In this case, the second discharge pipe 6 may no longer be arranged, and the discharge port may be understood as the inlet of the second discharge device.
[0080] In order to ensure that the coolant is not discharged to the outside of the liquid-cooled unit compartment 11, it is necessary to reasonably set the opening condition of the valve 7.
[0081] The coolant is usually red or blue, which makes the color of the coolant different from that of water. Based on this, it can be determined whether there is coolant in the first collection tank 3 by detecting the color of the liquid in the first collection tank 3. In some embodiments, the collection device also includes a color detection device, which is used to detect whether there is coolant color in the first collection tank 3 for detecting whether there is coolant in the first collection tank 3. When the color detection device detects that there is coolant color in the first collection tank 3, it indicates that the liquid in the first collection tank 3 includes coolant, and the valve 7 is opened to make the valve 7 in an open state, and the liquid in the first collection tank 3 is discharged to the second collection tank 4 through the second discharge pipe 6; when the color detection device detects that there is no coolant color in the first collection tank 3, it indicates that there is no coolant in the liquid in the first collection tank 3 (the liquid in the first collection tank 3 is water), the valve 7 is closed to make the valve 7 in a closed state, and the liquid in the first collection tank 3 will not be discharged to the second collection tank 4 through the second discharge pipe 6, and when the water level in the first collection tank 3 reaches the inlet of the first discharge pipe 5, the water in the first collection tank 3 is discharged to the outside of the liquid cooling unit cabin 11 through the first discharge pipe 5.
[0082] The working principle of the collection device is explained below in combination with three situations.
[0083] In the first case, when the liquid cooling unit 2 does not leak and water enters the liquid cooling unit cabin 11, the first collecting tank 3 collects the water entering the liquid cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is all water, and the color detection device detects that there is no coolant color in the first collecting tank 3 (the color detection device does not detect the coolant color), and the valve 7 remains closed; water continues to enter the liquid cooling unit cabin 11, and after the water level rises to the inlet of the first discharge pipe 5, the water is discharged to the outside of the liquid cooling unit cabin 11 through the first discharge pipe 5.
[0084] In the second case, when the liquid cooling unit 2 leaks and water does not enter the liquid cooling unit cabin 11, the first collecting tank 3 collects the leaked coolant of the liquid cooling unit 2, that is, the liquid entering the first collecting tank 3 is all coolant, and the color detection device detects the color of coolant in the first collecting tank 3 (the color detection device detects the color of coolant), the valve 7 opens, and the coolant in the first collecting tank 3 is discharged to the second collecting tank 4 through the second discharge pipe 6; the coolant continues to be discharged to the second collecting tank 4, and when the coolant in the first collecting tank 3 is all discharged to the second collecting tank 4, the color detection device detects that there is no coolant color in the first collecting tank 3 (the color detection device does not detect the color of coolant), and the valve 7 is closed again. When the liquid cooling unit 2 no longer leaks coolant, the liquid entering the first collecting tank 3 is water.
[0085] In the third case, when the liquid cooling unit 2 leaks and water enters the liquid cooling unit cabin 11, the first collecting tank 3 collects the leaked coolant from the liquid cooling unit 2 and the water entering the liquid cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is a mixture of coolant and water, and the color detection device detects the color of coolant in the first collecting tank 3 (the color detection device detects the color of coolant), the valve 7 opens, and the mixed liquid in the first collecting tank 3 is discharged to the second collecting tank 4 through the second discharge pipe 6; the coolant continues to be discharged to the second collecting tank 4, and when the mixed liquid in the first collecting tank 3 is completely discharged to the second collecting tank 4, the color detection device detects that there is no coolant color in the first collecting tank 3 (the color detection device does not detect the color of coolant), and the valve 7 is closed again. When the liquid cooling unit 2 no longer leaks coolant, the liquid entering the first collecting tank 3 is water.
[0086] It can be seen from the above working principle that when the liquid-cooling unit 2 does not leak and water enters the liquid-cooling unit cabin 11, the first collecting tank 3 collects the water entering the liquid-cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is all water, and the water can be discharged to the outside of the liquid-cooling unit cabin 11 through the first discharge device, that is, discharged to the outside of the energy storage box 1; when the liquid-cooling unit 2 leaks and water does not enter the liquid-cooling unit cabin 11, the first collecting tank 3 collects the coolant leaked from the liquid-cooling unit 2, that is, when the liquid in the first collecting tank 3 is all coolant, the coolant can be collected in the second collecting tank 4, and the coolant will not be discharged to the outside of the liquid-cooling unit cabin 11, that is, the coolant will not be discharged to the outside of the energy storage box 1. When the liquid cooling unit 2 leaks and water enters the liquid cooling unit cabin 11, the first collecting tank 3 collects the leaked coolant from the liquid cooling unit 2 and the water entering the liquid cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is a mixture of coolant and water, and the mixture is collected in the second collecting tank 4. The coolant will not be discharged to the outside of the liquid cooling unit cabin 11, that is, the coolant will not be discharged to the outside of the energy storage box 1.
[0087] The above-mentioned color detection device can be called a structure of the first detection device, and the color detection device realizes the function of the first detection device.
[0088] Of course, other first detection devices other than the color detection device can also be used to detect whether there is cooling liquid in the first collection tank 3. When the collection device includes other first detection devices, the working principle of the collection device can refer to the working principle when the collection device includes a color detection device, which will not be repeated here. Exemplarily, the first detection device can be a refractive index detection device, which detects whether the refractive index of the liquid in the first collection tank 3 is within a preset range to detect whether there is cooling liquid in the first collection tank 3; if there is cooling liquid in the first collection tank 3, the valve 7 is in an open state (the liquid in the first collection tank 3 is discharged into the second collection tank 4 through the second discharge device); if there is no cooling liquid in the first collection tank 3, the valve 7 is in a closed state (the liquid in the first collection tank 3 is not discharged into the second collection tank 4 through the second discharge device).
[0089] In some other embodiments, in the above-mentioned collecting device, the inlet of the first discharge device is higher than the inlet of the second discharge device, that is, the inlet of the first discharge pipe 5 is higher than the inlet of the second discharge pipe 6. Based on this, the opening and closing of the valve 7 can be controlled by pressure. Specifically, the above-mentioned collecting device also includes a second detection device, which is used to detect the pressure at the valve 7. If the detection value of the second detection device is greater than P 1 (The pressure at valve 7 is greater than P 1 ), valve 7 is opened to make valve 7 in an open state; if the detection value of the second detection device is not greater than P 1 (The pressure at valve 7 is not greater than P 1 ), valve 7 is closed to make valve 7 in a closed state.
[0090] In the above embodiment, when the water level in the first collecting tank 3 reaches the inlet of the first discharge pipe 5, the pressure at the valve 7 is P 1 .
[0091] The second detection device can directly display the pressure at the valve 7 in the form of a dial or numbers.
[0092] The following takes the valve 7 at the bottom of the first collecting tank 3 as an example to explain P 1 The distance from the inlet of the first discharge pipe 5 to the valve 7 is H 0 , P 1 =ρ 水 HkDJ 0 ±ΔP, ΔP ≥ 0, where ρ 水 is the density of water. It should be noted that ΔP is the P detected by the second detection device. 1 Compared with the theoretical value (ρ 水 HkDJ 0 ) between them.
[0093] Next, combine P 1The above description and three cases are used to illustrate the working principle of the collection device.
[0094] In the first case, when the liquid cooling unit 2 does not leak and water enters the liquid cooling unit cabin 11, the first collecting tank 3 collects the water entering the liquid cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is all water, and the pressure P at the valve 7 gradually increases with the increase of the water level; when the water level increases to H 0 When the pressure at valve 7 is P=P 1 , valve 7 will not open and valve 7 will remain in a closed state; when the water level continues to rise, rainwater is discharged to the outside of the liquid-cooled unit cabin 11 through the first discharge pipe 5.
[0095] In the second case, when the liquid cooling unit 2 leaks and water does not enter the liquid cooling unit cabin 11, the first collecting tank 3 collects the coolant leaking from the liquid cooling unit 2, that is, all the liquid entering the first collecting tank 3 is coolant, and the pressure P at the valve 7 gradually increases with the rise of the liquid level. Since the density of the coolant is greater than the density of water, when the pressure P at the valve 7 is just greater than P 1 When the liquid level has not yet risen to H 0 Assume that the pressure at valve 7 is just greater than P 1 The liquid level at this time is H 1 , then when the liquid level just exceeds H 1 When the valve 7 is opened, the coolant in the first collecting tank 3 is discharged from the second discharge pipe 6 to the second collecting tank 4; the coolant is continuously discharged so that the liquid level in the first collecting tank 3 decreases, thus preventing the liquid level in the first collecting tank 3 from rising to the liquid level H. 0 When the liquid level in the first collecting tank 3 drops to H 1 When the valve 7 is closed again, the water level in the first collecting tank 3 will stabilize at H 1 , the liquid level no longer continues to rise, and the coolant will not be discharged from the first discharge pipe 5 to the outside of the liquid-cooled unit cabin 11.
[0096] It should be noted that the sum of the amount of coolant in the first collecting tank 3 and the amount of coolant in the second collecting tank 4 is the total amount of coolant leaked from the liquid cooling unit 2. In the process of the coolant in the first collecting tank 3 being discharged into the second collecting tank 4 through the second discharge pipe 6, the discharge amount of the coolant is greater than the leakage amount of the liquid cooling unit 2 per unit time, thus ensuring that the liquid level in the first collecting tank 3 is lowered when the coolant is discharged into the second collecting tank 4 through the second discharge pipe 6. When the coolant in the first collecting tank 3 is discharged into the second collecting tank 4 through the second discharge pipe 6, the leakage amount of the liquid cooling unit 2 can be zero.
[0097] In the third case, when the liquid cooling unit 2 leaks and water enters the liquid cooling unit cabin 11, the first collecting tank 3 collects the leaked coolant from the liquid cooling unit 2 and the water entering the liquid cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is a mixture of coolant and water, and the pressure P at the valve 7 gradually increases with the rise of the water level. Since the density of the mixed liquid is greater than the density of water, when the pressure P at the valve 7 is greater than P 1 When the liquid level has not yet risen to H 0 Assume that the pressure P at valve 7 is just greater than P 1 The water level at that time is H 2 (not shown in the figure), then when the liquid level just exceeds H 2 When the valve is opened, the mixed liquid in the first collecting tank 3 is discharged from the second discharge pipe 6 to the second collecting tank 4. The liquid is continuously discharged and the liquid level drops to H again. 2 When the valve is closed again, the liquid level in the first collecting tank 3 will stabilize at H 2 , no longer continues to rise, and the mixed liquid will not be discharged from the first discharge pipe 6 to the outside of the liquid cooling unit cabin 11.
[0098] It should be noted that H 2 Greater than H 1 The sum of the amount of the mixed liquid in the first collecting tank 3 and the amount of the mixed liquid in the second collecting tank 4 is the sum of the total amount of coolant leaked from the liquid cooling unit 2 and the amount of water entering the liquid cooling unit cabin 11. In the process of the mixed liquid in the first collecting tank 3 being discharged into the second collecting tank 4 through the second discharge pipe 6, the discharge amount of the mixed liquid per unit time is greater than the sum of the leakage amount of the liquid cooling unit 2 and the amount of rainwater entering the liquid cooling unit cabin 11, thereby ensuring that the liquid level in the first collecting tank 3 drops when the mixed liquid is discharged into the second collecting tank 4 through the second discharge pipe 6. When the mixed liquid in the first collecting tank 3 is discharged into the second collecting tank 4 through the second discharge pipe 6, the leakage amount of the liquid cooling unit 2 can be zero and the amount of water entering the liquid cooling unit cabin 11 can be zero.
[0099] It can be seen from the above working principle that when the liquid-cooling unit 2 does not leak and water enters the liquid-cooling unit cabin 11, the first collecting tank 3 collects the water entering the liquid-cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is all water, and the water can be discharged to the outside of the liquid-cooling unit cabin 11 through the first discharge device, that is, discharged to the outside of the energy storage box 1; when the liquid-cooling unit 2 leaks and water does not enter the liquid-cooling unit cabin 11, the first collecting tank 3 collects the coolant leaked from the liquid-cooling unit 2, that is, the liquid in the first collecting tank 3 is all coolant, the coolant can be collected in the first collecting tank 3 and the second collecting tank 4, and the coolant will not be discharged from the outside of the liquid-cooling unit cabin 11, that is, the coolant will not be discharged to the outside of the energy storage box 1. When the liquid cooling unit 2 leaks and water enters the liquid cooling unit cabin 11, the first collecting tank 3 collects the leaked coolant from the liquid cooling unit 2 and the water entering the liquid cooling unit cabin 11, that is, the liquid in the first collecting tank 3 is a mixture of coolant and water, and the mixture is collected in the first collecting tank 3 and the second collecting tank 4. The coolant will not be discharged to the outside of the liquid cooling unit cabin 11, that is, the coolant will not be discharged to the outside of the energy storage box 1.
[0100] In actual situations, the inlet of the second discharge pipe 6 may not be at the bottom of the first collecting tank 3, that is, there is a second preset distance H between the inlet of the second discharge pipe 6 and the bottom of the first collecting tank 3. 0 '; Accordingly, the valve 7 is not at the bottom of the first collecting tank 3, that is, there is a second preset distance H between the valve 7 and the bottom of the first collecting tank 3 0 '. It can be understood that the inlet of the second discharge pipe 6 and the valve 7 are both higher than the bottom of the first collecting tank 3. In this case, P 1 =ρ 水 g(H 0 -H 0 ')±ΔP. It can be understood that when the inlet of the second discharge pipe 6 is located at the bottom of the first collection tank 3 (when the valve 7 is located at the bottom of the first collection tank 3), H 0 '=0.
[0101] The first detection device and the second detection device can both be called detection devices, and the detection device and valve 7 may or may not be connected by signal. In order to realize automatic control, the detection device and valve 7 may be connected by signal, so that valve 7 can be automatically opened and closed under the control of the detection device, thereby improving the degree of automation. Of course, a control device may also be added, and the detection device, the control device and valve 7 may be connected by signal in sequence, so that valve 7 can be automatically opened and closed under the control of the control device.
[0102] In some other embodiments, the valve 7 is an automatic valve, for example, the valve 7 is controlled by an elastic element. This embodiment does not limit the type of the automatic valve.
[0103] In the above embodiment, if the pressure at valve 7 is greater than P 1 , valve 7 is in the open state; if the pressure at valve 7 is not greater than P 1 , valve 7 is in a closed state. The inlet of the first discharge device is higher than the inlet of the second discharge device (the inlet of the first discharge pipe 5 is higher than the inlet of the second discharge pipe 6); when the water level in the first collection tank 3 reaches the inlet of the first discharge device, the pressure at the valve 7 is P 1 For P 1 For the description, please refer to the previous article and will not be repeated here.
[0104] In the above embodiment, the working principle of the collecting device can be referred to above and will not be described again here.
[0105] When the collecting device provided in the first embodiment is applied to a liquid-cooled unit cabin with a non-sealed structure, it can collect the coolant leaked from the liquid-cooled unit and the water entering the liquid-cooled unit cabin. At the same time, it can separate rainwater and coolant to discharge rainwater separately, avoiding the coolant from being discharged to the outside of the liquid-cooled unit cabin, thereby avoiding the coolant from polluting the environment.
[0106] Embodiment 2
[0107] The main difference between the collecting device provided in the second embodiment and the first embodiment is that the first discharge device is different.
[0108] like Figure 2 As shown, in the second embodiment, the first discharge device includes a first discharge pipe 5 and a discharge hole 8 arranged at the bottom of the liquid cooling unit cabin 11.
[0109] The first discharge pipe 5 is located in the liquid cooling unit cabin 11 ; the inlet of the first discharge pipe 5 is connected to the first collecting tank 3 , and the outlet of the first discharge pipe 5 is located outside the first collecting tank 3 and outside the second collecting tank 4 .
[0110] The first discharge pipe 5 is used to drain water into the liquid cooling unit cabin 11. The above-mentioned discharge hole 8 is used to drain water in the liquid cooling unit cabin 11. It can be understood that the outlet of the first discharge pipe 5 and the discharge hole 8 are connected through the inner cavity of the liquid cooling unit cabin 11. Of course, the first discharge pipe 5 and the discharge hole 8 can also be connected through a connecting pipe or other devices to ensure that the outlet of the first discharge pipe 5 and the discharge hole 8 are connected.
[0111] In the second embodiment, the discharge hole 8 is arranged at the bottom of the liquid cooling unit cabin 11, that is, the discharge hole 8 is located at the bottom of the energy storage box 1, which has little impact on the appearance of the energy storage box 1, making the exterior of the energy storage box 1 more tidy and beautiful.
[0112] In the second embodiment, in order to prevent the coolant from being discharged from the first discharge pipe 5 to the outside of the liquid-cooled unit cabin 11 , the inlet of the first discharge pipe 5 is higher than the inlet of the second discharge device.
[0113] In other embodiments, a switch valve may be optionally provided at the first discharge pipe 5. When the liquid in the first collecting tank 3 includes coolant and the liquid level in the first collecting tank 3 reaches the inlet of the first discharge pipe 5, the switch valve may be closed to prevent the coolant from being discharged from the first discharge pipe 5 to the outside of the liquid cooling unit compartment 11.
[0114] In the second embodiment, other structures and working principles of the collecting device can refer to the first embodiment and will not be described again here.
[0115] Embodiment 3
[0116] The main difference between the collecting device provided in the third embodiment and the first and second embodiments is that the structures of the first collecting tank and the second collecting tank are different.
[0117] like Figure 3 and Figure 4 As shown, in this embodiment 3, the first collection tank and the second collection tank are an integrated structure. It can be understood that in this embodiment 3, the collection device includes a collection tank 01, and a partition 02 is provided in the inner cavity of the collection tank 01, and the partition 02 divides the inner cavity of the collection tank 01 into a first collection cavity 011 and a second collection cavity 012. The first collection cavity 011 can be understood as the first collection tank in the first and second embodiments, and the second collection cavity 012 can be understood as the second collection tank in the first and second embodiments.
[0118] In the third embodiment, other structures and working principles of the collecting device can be referred to in the first and second embodiments, and will not be described in detail here.
[0119] Since the collection device provided in the above embodiment has the above technical effects, and the above energy storage system includes the above collection device, the above energy storage system also has the corresponding technical effects, which will not be described in detail herein.
[0120] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A collecting device, characterized in that: include: A first collecting tank, which is used to be arranged in the liquid cooling unit cabin, and the first collecting tank can collect the coolant leaked from the liquid cooling unit and the water entering the liquid cooling unit cabin; a first discharge device, wherein the inlet of the first discharge device is connected to the first collecting tank, and the first discharge device is used to discharge the water in the first collecting tank to the outside of the liquid cooling unit cabin; A second discharge device and a second collecting tank, wherein the inlet of the second discharge device is connected to the first collecting tank, and the second discharge device is used to discharge the liquid including the coolant in the first collecting tank to the second collecting tank.
2. The collecting device according to claim 1, characterized in that The second discharge device comprises: a discharge port disposed in the first collecting tank, and a valve for controlling the opening and closing of the discharge port; wherein the discharge port is in communication with the first collecting tank.
3. The collecting device according to claim 2, characterized in that Also included is a first detection device, the first detection device is used to detect whether there is coolant in the first collecting tank; Wherein, if there is coolant in the first collecting tank, the valve is in an open state; if there is no coolant in the first collecting tank, the valve is in a closed state.
4. The collecting device according to claim 3, characterized in that The first detection device is a color detection device, and the color detection device is used to detect whether there is coolant in the first collecting tank by detecting whether there is coolant color in the first collecting tank; Alternatively, the first detection device is a refractive index detection device, and the refractive index detection device is used to detect whether there is cooling liquid in the first collecting tank by detecting whether the refractive index of the liquid in the first collecting tank is within a preset range.
5. The collecting device according to claim 2, characterized in that: The inlet of the first discharge device is higher than the inlet of the second discharge device; The collecting device further comprises a second detection device, which is used to detect the pressure at the valve; if the pressure at the valve is greater than P1, the valve is in an open state; if the pressure at the valve is not greater than P1, the valve is in a closed state; When the water level in the first collecting tank reaches the inlet of the first discharge device, the pressure at the valve is P1.
6. The collecting device according to claim 2, characterized in that: The inlet of the first discharge device is higher than the inlet of the second discharge device; The valve is an automatic valve; If the pressure at the valve is greater than P1, the valve is in an open state; if the pressure at the valve is not greater than P1, the valve is in a closed state; When the water level in the first collecting tank reaches the inlet of the first discharge device, the pressure at the valve is P1.
7. The collecting device according to claim 2, characterized in that The second discharge device further includes a second discharge pipe, the discharge port is an inlet of the second discharge pipe, and the valve is arranged on the second discharge pipe.
8. The collecting device according to claim 1, characterized in that The inlet of the second discharge device is located at the bottom of the first collecting tank.
9. The collecting device according to claim 1, characterized in that The first discharge device includes a first discharge pipe, the inlet of the first discharge pipe is connected to the first collecting tank, the outlet of the first discharge pipe extends to the outside of the liquid cooling unit cabin, and the inlet of the first discharge pipe is higher than the inlet of the second discharge device.
10. The collecting device according to claim 1, characterized in that The first discharge device includes a first discharge pipe and a discharge hole; Wherein, the discharge hole is arranged at the bottom of the liquid cooling unit cabin; The first discharge pipe is located in the liquid cooling unit cabin; the inlet of the first discharge pipe is connected to the first collecting tank, and the outlet of the first discharge pipe is located outside the first collecting tank and outside the second collecting tank, and the outlet of the first discharge pipe is connected to the discharge hole; the inlet of the first discharge pipe is higher than the inlet of the second discharge device.
11. The collecting device according to claim 1, characterized in that The first collecting tank and the second collecting tank are split structures.
12. The collecting device according to claim 1, characterized in that The first collecting tank and the second collecting tank are an integrated structure.
13. The collecting device according to claim 1, characterized in that The second collecting tank is used to be arranged in the liquid cooling unit cabin, and the second collecting tank is located at the bottom of the first collecting tank.
14. The collecting device according to any one of claims 1 to 13, characterized in that The outer wall of the first collecting tank is sealedly connected to the inner wall of the liquid cooling unit compartment.
15. An energy storage system, characterized in that: include: A liquid cooling unit cabin, a liquid cooling unit arranged in the liquid cooling unit cabin, and a collection device as described in any one of claims 1-14.