Liquid cooling assembly and energy storage device

Abstract

The embodiment of the utility model provides a liquid cooling assembly and an energy storage device, and relates to the technical field of energy storage. The liquid cooling assembly comprises a liquid inlet header pipe, a liquid inlet branch pipe, a first stop valve and a liquid cooling plate. The first end of the liquid inlet branch pipe is connected with the pipe body interface of the liquid inlet header pipe, and the second end of the liquid inlet branch pipe is connected with the cooling liquid inlet of the liquid cooling plate through the first stop valve, so that the cooling liquid in the liquid inlet header pipe quantitatively flows into the liquid cooling plate through the liquid inlet branch pipe and the first stop valve. According to the liquid cooling assembly and the energy storage device, the first stop valve is arranged between the liquid inlet branch pipe and the cooling liquid inlet of the liquid cooling plate, so that the cooling liquid can be controlled to quantitatively flow into the liquid cooling plate, and the controllability of distribution of the cooling liquid is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of energy storage, and particularly to a liquid cooling component and an energy storage device. Background Art

[0002] With the continuous development of new energy technologies, new energy energy storage devices such as battery packs are more and more widely used. However, a large amount of heat is generated during the discharge process of the energy storage device. If the heat cannot be dissipated in time and effectively, it will cause the internal temperature of the energy storage device to rise, affecting the performance, lifespan and even safety of the energy storage components. Therefore, how to efficiently and reliably perform heat exchange has become a key issue in the design and maintenance of energy storage devices.

[0003] Among the existing heat exchange technologies, the liquid cooling technology has the advantages of high heat dissipation efficiency, precise temperature control, and compact space, and is one of the most commonly used heat exchange technologies. Its technical solution is mainly to take out the internal heat of the energy storage device by circulating the coolant inside the energy storage device.

[0004] However, in the existing liquid cooling technology, when multiple heat generating components need to be cooled simultaneously, there is often a situation where the cooling degrees of multiple heat generating components are uneven, which easily leads to too high or too low local temperature of the energy storage device, affecting the performance of the energy storage device. Therefore, how to make multiple heat generating components cool down relatively evenly has become a technical problem to be solved. Utility Model Content

[0005] In view of the above problems, the embodiments of the present application provide a liquid cooling component. The inlet liquid branch pipe of the liquid cooling component is connected to the liquid cooling plate through a stop valve, so that the coolant flows into the liquid cooling plate quantitatively under the control of the stop valve, improving the controllability of the coolant distribution, so as to make the heat exchange effect of the heat generating component controllable by controlling the coolant flow rate, and further creating conditions for relatively uniform cooling of multiple heat generating components. The embodiments of the present application also provide an energy storage device including such a liquid cooling component.

[0006] According to one aspect of the embodiments of the present application, a liquid cooling component is provided, which is applied to an energy storage device. The liquid cooling component includes: an inlet liquid main pipe, an inlet liquid branch pipe, a first stop valve and a liquid cooling plate. The first end of the inlet liquid branch pipe is connected to the pipe body interface of the inlet liquid main pipe, and the second end of the inlet liquid branch pipe is connected to the coolant inlet of the liquid cooling plate through the first stop valve, so that the coolant in the inlet liquid main pipe flows into the liquid cooling plate quantitatively through the inlet liquid branch pipe and the first stop valve.

[0007] The first stop valve is arranged between the inlet liquid branch pipe and the liquid cooling plate, which can control the flow rate of the coolant when it enters the liquid cooling plate. The coolant can always flow into the liquid cooling plate quantitatively in a controllable manner, improving the controllability of the coolant distribution.

[0008] Optionally, the liquid cooling component further includes a second cut-off valve. The first end of the liquid inlet branch pipe is connected to the pipe body interface of the liquid inlet main pipe through the second cut-off valve, so that the coolant in the liquid inlet main pipe flows into the liquid cooling plate quantitatively through the second cut-off valve, the liquid inlet branch pipe and the first cut-off valve.

[0009] A second cut-off valve is further provided between the liquid inlet main pipe and the liquid inlet branch pipe, so that the second cut-off valve cooperates with the first cut-off valve to limit the flow rate of the coolant, thereby performing multiple controls on the flow of the coolant, making the flow rate control of the coolant distribution more accurate. Moreover, the second cut-off valve and the first cut-off valve jointly bear the impact when the coolant flows, making it not easy to get out of control or damaged under the long-term flow impact, thereby enhancing the reliability of the liquid cooling component while improving the controllability of the coolant distribution.

[0010] Optionally, the second cut-off valve includes a first valve body and a second valve body. The first valve body is fixedly connected to the first end of the liquid inlet branch pipe, and the second valve body is fixedly connected to the pipe body interface of the liquid inlet main pipe. When the first valve body and the second valve body are butted and combined, the liquid inlet branch pipe and the liquid inlet main pipe are communicated.

[0011] The second valve body is formed by butting and combining the first valve body and the second valve body, which can make the second cut-off valve easy to assemble, more flexible in use, and stronger in applicability.

[0012] Optionally, the second valve body is of a two-way structure or a three-way structure.

[0013] Setting the second valve body to a two-way structure or a three-way structure can make the second valve body be flexibly set corresponding to the structure of the liquid inlet main pipe, and the applicability is stronger.

[0014] Optionally, the number of the liquid inlet branch pipes, the pipe body interfaces of the liquid inlet main pipe, the first cut-off valves and the coolant inlets are all multiple and are in one-to-one correspondence. The first ends of the respective liquid inlet branch pipes are respectively connected to the corresponding pipe body interfaces, and the second ends of the respective liquid inlet branch pipes are respectively connected to the corresponding coolant inlets through the corresponding first cut-off valves.

[0015] The number of the liquid inlet branch pipes, the pipe body interfaces of the liquid inlet main pipe, the first cut-off valves and the coolant inlets are all multiple, and the coolant can be quantitatively divided into multiple portions and respectively injected into the liquid cooling plate, so that the coolant can be accurately distributed to different coolant inlets, making the heat exchange effect of multiple heat generating elements controllable, and further making multiple heat generating elements cooled and cooled relatively evenly by controlling the heat exchange of multiple heat generating elements.

[0016] Optionally, the size specifications and opening and closing states of the respective first cut-off valves are the same, so that the coolant in the respective liquid inlet branch pipes flows into the liquid cooling plate in equal amounts from the corresponding coolant inlets.

[0017] The size specifications and opening / closing states of the first shut-off valve are consistent, enabling the equal inflow of multiple portions of the allocated coolant into the liquid cooling plate, achieving the average distribution of the coolant and avoiding the uneven distribution of the coolant.

[0018] Optionally, the liquid cooling assembly further includes an outlet sub-pipe and a third shut-off valve. The first end of the outlet sub-pipe is connected to the coolant outlet of the liquid cooling plate through the third shut-off valve, enabling the coolant in the liquid cooling plate to flow out quantitatively through the third shut-off valve and the outlet sub-pipe.

[0019] A third shut-off valve is provided between the liquid cooling plate and the outlet sub-pipe, enabling the third shut-off valve to cooperate with the first shut-off valve to limit the flow rate of the coolant, thereby controlling the flow velocity of the coolant in the liquid cooling plate and further controlling the cooling effect of the liquid cooling plate on the heat-generating component.

[0020] Furthermore, the liquid cooling assembly further includes an outlet main pipe and a fourth shut-off valve. The second end of the outlet sub-pipe is connected to the pipe body interface of the outlet main pipe through the fourth shut-off valve, enabling the coolant in the liquid cooling plate to flow quantitatively to the outlet main pipe through the third shut-off valve, the outlet sub-pipe, and the fourth shut-off valve.

[0021] While setting the third shut-off valve, a fourth shut-off valve is further provided between the outlet main pipe and the outlet sub-pipe, enabling the third shut-off valve and the fourth shut-off valve to cooperate with the first shut-off valve to limit the flow rate of the coolant, thereby performing multiple controls on the flow of the coolant, enhancing the reliability of the liquid cooling assembly while controlling the flow velocity of the coolant in the liquid cooling plate.

[0022] Optionally, the liquid cooling assembly further includes an outlet sub-pipe, a fourth shut-off valve, and an outlet main pipe. The first end of the outlet sub-pipe is connected to the coolant outlet of the liquid cooling plate, and the second end of the outlet sub-pipe is connected to the pipe body interface of the outlet main pipe through the fourth shut-off valve, enabling the coolant in the liquid cooling plate to flow quantitatively to the outlet main pipe through the outlet sub-pipe and the fourth shut-off valve.

[0023] A fourth shut-off valve is provided between the outlet main pipe and the outlet sub-pipe, enabling the fourth shut-off valve to cooperate with the first shut-off valve to limit the flow rate of the coolant, thereby controlling the flow velocity of the coolant in the liquid cooling plate and further controlling the cooling effect of the liquid cooling plate on the heat-generating component.

[0024] According to another aspect of the embodiments of the present application, an energy storage device is provided. The energy storage device includes a battery pack and any one of the above feasible liquid cooling assemblies, and the liquid cooling plate in the liquid cooling assembly is disposed on one side of the battery pack for heat exchange with the battery pack.

[0025] In the liquid cooling component of the energy storage device, the first cut-off valve is arranged between the liquid inlet branch pipe and the liquid cooling plate, which can control the flow rate of the coolant when it enters the liquid cooling plate. The coolant can always flow into the liquid cooling plate in a controllable and quantitative manner, so as to achieve the precise distribution of the coolant, avoid the uneven distribution of the coolant, and make the performance of the energy storage device more stable.

[0026] In the liquid cooling component and the energy storage device provided by the embodiments of the present application, a first cut-off valve is arranged between the liquid inlet branch pipe and the coolant inlet of the liquid cooling plate. The coolant in the liquid inlet main pipe is first distributed to the liquid inlet branch pipe, and then flows into the liquid cooling plate through the first cut-off valve. The flow rate of the coolant remains constant under the control of the first cut-off valve, so that the coolant can flow into the liquid cooling plate quantitatively, reducing the influence of factors such as gravity on the flow rate and inflow volume of the coolant into the liquid cooling plate. When the liquid cooling plate is arranged corresponding to multiple heat generating elements, the coolant can be quantitatively flowed into each coolant inlet through multiple first cut-off valves, realizing the precise distribution of the coolant, avoiding the phenomenon of local overheating or overcooling of the energy storage device, and improving the performance of the energy storage device.

[0027] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0029] Figure 1 It is a partial perspective view of an energy storage device provided with a liquid cooling component according to the present application.

[0030] Figure 2 It is a partial front view of an energy storage device provided with a liquid cooling component according to the present application.

[0031] Figure 3 It is a partial schematic diagram of the position of the first cut-off valve of a liquid cooling component provided by the present application.

[0032] Figure 4 It is a partial schematic diagram of the position of the second cut-off valve of a liquid cooling component provided by the present application.

[0033] Figure 5Schematic diagram of the overall structure of an energy storage device provided with a liquid cooling component for this application.

[0034] Reference numerals:

[0035] 1. Liquid cooling component; 10. Inlet main pipe; 20. Inlet branch pipe; 30. First stop valve; 40. Liquid cooling plate; 41. Coolant inlet; 50. Second stop valve; 51. First valve body; 52. Second valve body; 60. Outlet branch pipe; 70. Third stop valve; 80. Outlet main pipe; 90. Fourth stop valve; 2. Battery pack. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0038] The terms "including" and "having" and any variations thereof in the description and claims of this application and the accompanying drawings are intended to cover without excluding other contents. The word "a" or "an" does not exclude the existence of a plurality.

[0039] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase "embodiments" appearing in various places in the description is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0040] The term "and / or" herein is merely a description of the associated relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0041] The directional terms appearing in the following description are all the directions shown in the figures, and do not limit the specific structures of the liquid cooling component and energy storage device of the present application. For example, in the description of the present application, terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0042] In addition, expressions indicating directions such as the X direction, Y direction, and Z direction, which are used to illustrate the operations and structures of the components of the liquid cooling component and energy storage device of this embodiment, are not absolute but relative. Although these indications are appropriate when the components of the liquid cooling component and energy storage device are in the positions shown in the figures, when these positions change, these directions should have different interpretations to correspond to the change.

[0043] In addition, terms such as "first", "second", etc. in the specification and claims of the present application or in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0044] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups).

[0045] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, the "connection" or "linkage" of mechanical structures can refer to physical connection. For example, physical connection can be a fixed connection, such as a fixed connection through fixing parts, such as fixing connection through screws, bolts or other fixing parts; physical connection can also be a detachable connection, such as snap connection or engagement connection; physical connection can also be an integral connection, such as welding, bonding or forming a connection by integral molding. The "connection" or "linkage" of circuit structures can refer to not only physical connection but also electrical connection or signal connection. For example, it can be a direct connection, that is, a physical connection, or can be indirectly connected through at least one intermediate component, as long as the circuit is connected, and can also be the communication inside two components; signal connection can refer to signal connection through a medium in addition to signal connection through a circuit, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0046] The liquid cooling component provided by the present application is applied to an energy storage device, and the structure of the liquid cooling component is specifically as Figure 1 、 Figure 2 and Figure 3 shown. Figure 1 Figure Figure 2 is a partial structural schematic diagram of an energy storage device provided with a liquid cooling component according to the present application, Figure 3 Figure

[0047] is a partial front view of an energy storage device provided with a liquid cooling component according to the present application. Among them, this type of liquid cooling component 1 includes: a liquid inlet main pipe 10, a liquid inlet branch pipe 20, a first stop valve 30, and a liquid cooling plate 40.

[0048] Both the liquid inlet main pipe 10 and the liquid inlet branch pipe 20 are pipes for injecting coolant into the liquid cooling plate 40. The liquid inlet main pipe 10 is a pipe for centrally transporting coolant, and it can be set as a straight pipe, a bent pipe, etc. Pipe body interfaces are arranged on the pipe body of the liquid inlet main pipe 10, and the pipe body interfaces are used to connect with the liquid inlet branch pipe 20 to further distribute and transport the coolant.

[0049] The liquid inlet branch pipe 20 is a pipe that further conveys the coolant distributed by the liquid inlet main pipe 10 to the liquid cooling plate 40. The liquid inlet branch pipe 20 can be a straight pipe, a bent pipe, or other pipe types. The first end of the liquid inlet branch pipe 20 is connected to the pipe body interface of the liquid inlet main pipe 10, and the second end of the liquid inlet branch pipe 20 is connected to the coolant inlet 41 of the liquid cooling plate 40 through the first stop valve 30, so that the coolant in the liquid inlet main pipe 10 flows into the liquid cooling plate 40 quantitatively through the liquid inlet branch pipe 20 and the first stop valve 30.

[0050] The first end and the second end of the liquid inlet branch pipe 20 are opposite ends. The first end of the liquid inlet branch pipe 20 can be connected to the pipe body interface of the liquid inlet main pipe 10 by means of plugging, threaded connection, etc., so that the coolant in the liquid inlet main pipe 10 flows into the liquid inlet branch pipe 20 from the first end of the liquid inlet branch pipe 20.

[0051] The second end of the liquid inlet branch pipe 20 is connected to the coolant inlet 41 of the liquid cooling plate 40 through the first stop valve 30. Specifically, the second end of the liquid inlet branch pipe 20 is connected to the inlet of the first stop valve 30, and the coolant inlet 41 of the liquid cooling plate 40 is connected to the outlet of the first stop valve 30, so that the coolant distributed to the liquid inlet branch pipe 20 flows into the liquid cooling plate 40 from the coolant inlet 41 of the liquid cooling plate 40 through the first stop valve 30.

[0052] When the first stop valve 30 is in the open state, the opening amplitude of the first stop valve 30 determines the flow rate of the coolant passing through the first stop valve 30. Therefore, by controlling the opening amplitude of the first stop valve 30, the coolant can be controlled to flow into the liquid cooling plate 40 quantitatively. When the first stop valve 30 is in the closed state, the first stop valve 30 blocks the channel for the coolant to enter the coolant inlet 41, so that the coolant cannot flow into the liquid cooling plate 40 from the coolant inlet 41.

[0053] The first stop valve 30 is arranged between the liquid inlet branch pipe 20 and the coolant inlet 41 of the liquid cooling plate 40, so that the flow rate of the coolant is restricted on the flow path of the coolant entering the liquid cooling plate 40, and the coolant can flow into the liquid cooling plate 40 controllably and quantitatively.

[0054] Among them, the liquid cooling plate 40 is used for heat exchange with the heat generating element, and it is generally installed adjacent to the heat generating element. When the liquid cooling plate 40 cools down multiple heat generating elements, the non - communicating coolant flow paths in the liquid cooling plate 40 are set to be multiple corresponding to the number of heat generating elements, and the corresponding coolant inlets 41 are multiple. Each coolant inlet 41 controls the flow rate of the coolant flowing into each coolant inlet 41 through a different first stop valve 30, so that the coolant can be accurately distributed to different coolant inlets 41, making the heat exchange effect of multiple heat generating elements controllable, and further making multiple heat generating elements cooled down relatively evenly by controlling the heat exchange of multiple heat generating elements.

[0055] In this embodiment, the coolant first passes through the main liquid inlet pipe 10, the branch liquid inlet pipes 20, and the first stop valve 30 and flows into the liquid cooling plate 40 from the coolant inlet 41. When there are multiple coolant inlets 41, correspondingly, the pipe body interfaces of the main liquid inlet pipe 10, the branch liquid inlet pipes 20, and the first stop valve 30 should all be set to at least the same number of multiples.

[0056] Specifically, as Figure 1 shown, the number of the branch liquid inlet pipes 20, the pipe body interfaces of the main liquid inlet pipe 10, the first stop valve 30, and the coolant inlets 41 are all multiple and are in one-to-one correspondence and matching. The first ends of the branch liquid inlet pipes 20 are respectively connected to the corresponding pipe body interfaces, and the second ends of the branch liquid inlet pipes 20 are respectively connected to the corresponding coolant inlets 41 through the corresponding first stop valves 30.

[0057] In this implementation method, the size specifications and opening / closing states of the first stop valves 30 can be different, so that the coolant enters the liquid cooling plate 40 from each coolant inlet 41 in different flow rates, realizing the personalized setting of the coolant entering different coolant inlets 41 in different flow rates. Or, the size specifications and opening / closing states of the first stop valves 30 can also be the same, so that the coolant in each branch liquid inlet pipe 20 flows into the liquid cooling plate 40 equally from the corresponding coolant inlets 41, thereby realizing the uniform distribution of the coolant.

[0058] Furthermore, in order to ensure the distribution effect of the coolant, the installed branch liquid inlet pipes 20 can be arranged in parallel. The specific implementation method can be that the coolant inlets 41 of the liquid cooling plate 40 are arranged in a row at equal intervals according to the first distance, the pipe body interfaces on the main liquid inlet pipe 10 are also arranged in a row at equal intervals with the first distance, and the branch liquid inlet pipes 20 are arranged in parallel and connect the coolant inlets 41 and the pipe body interfaces.

[0059] In this embodiment, the first stop valve 30 is arranged on the flow path of the coolant entering the liquid cooling plate 40, and can realize the quantitative control of the coolant distribution. On this basis, more stop valves can be arranged on the flow path of the coolant entering the liquid cooling plate 40 to avoid the out-of-control or damage of a single valve under the long-term flow impact, thereby enhancing the reliability of the liquid cooling component 1 while improving the controllability of the coolant distribution.

[0060] A feasible implementation method is as Figure 1 , Figure 3 and Figure 4 shown, Figure 4A partial schematic diagram of the position of the second shut-off valve of a liquid cooling component provided by this application. Among them, the liquid cooling component 1 further includes a second shut-off valve 50. The first end of the liquid inlet branch pipe 20 is connected to the pipe body interface of the liquid inlet main pipe 10 through the second shut-off valve 50, so that the coolant in the liquid inlet main pipe 10 flows into the liquid cooling plate 40 quantitatively through the second shut-off valve 50, the liquid inlet branch pipe 20 and the first shut-off valve 30.

[0061] In this embodiment, the second shut-off valve 50 is arranged between the liquid inlet main pipe 10 and the liquid inlet branch pipe 20, so that the process of distributing the coolant in the liquid inlet main pipe 10 to the liquid inlet branch pipe 20 is also controlled by the shut-off valve. Specifically, the flow rate of the coolant in the liquid inlet main pipe 10 when entering the liquid inlet branch pipe 20 is limited by the second shut-off valve 50, and the flow rate of the coolant in the liquid inlet branch pipe 20 when entering the liquid cooling plate 40 is limited by the first shut-off valve 30, so as to perform two-stage current limiting on the coolant, making the flow control of the coolant more accurate.

[0062] In this embodiment, the size specifications and opening / closing states of the first shut-off valve 30 and the second shut-off valve 50 can be the same, so that the coolant can flow through the first shut-off valve 30 and the second shut-off valve 50 smoothly and enter the liquid cooling plate 40. Or, the size specifications and opening / closing states of the first shut-off valve 30 and the second shut-off valve 50 can also be different. For example, the coolant flow rate restricted by the second shut-off valve 50 is greater than the coolant flow rate restricted by the first shut-off valve 30, so that even if there is some loss of the coolant in the liquid inlet branch pipe 20, it can be ensured that the coolant flows into the liquid cooling plate 40 at the coolant flow rate restricted by the first shut-off valve 30.

[0063] When the second shut-off valve 50 is used in cooperation with the first shut-off valve 30, the second shut-off valve 50 and the first shut-off valve 30 jointly bear the impact of the coolant flow. The shut-off valve is not easily out of control or damaged under the long-term flow impact, thus enhancing the reliability of the liquid cooling component 1 while improving the controllability of the coolant distribution.

[0064] In addition, on the basis of arranging the shut-off valve on the flow path of the coolant entering the liquid cooling plate 40, it is further possible to arrange more shut-off valves on the flow path of the coolant flowing out of the liquid cooling plate 40, so as to perform multiple controls on the distribution of the coolant on the entire flow path of the coolant flowing into and out of the liquid cooling plate 40, so as to control the flow rate of the coolant in the liquid cooling plate 40 by controlling the inflow and outflow of the coolant in the liquid cooling plate 40, thereby controlling the inventory and residence time of the coolant in the liquid cooling plate 40, and further controlling the cooling effect of the liquid cooling plate 40 on the heat generating element. The following is an exemplary description of the embodiment of arranging the shut-off valve on the flow path of the coolant flowing out of the liquid cooling plate 40.

[0065] The first embodiment of arranging the shut-off valve on the flow path of the coolant flowing out of the liquid cooling plate 40 can be as Figure 1As shown in the figure, specifically, the liquid cooling component 1 further includes a liquid outlet branch pipe 60 and a third stop valve 70. The first end of the liquid outlet branch pipe 60 is connected to the coolant outlet of the liquid cooling plate 40 through the third stop valve 70, so that the coolant in the liquid cooling plate 40 flows out quantitatively through the third stop valve 70 and the liquid outlet branch pipe 60.

[0066] In this embodiment, the third stop valve 70 is arranged between the liquid cooling plate 40 and the liquid outlet branch pipe 60, so that the third stop valve 70 is controlled when the coolant flows out from the coolant outlet of the liquid cooling plate 40. Since a first stop valve 30 is arranged between the coolant inlet 41 of the liquid cooling plate 40 and the liquid inlet branch pipe 20, and a third stop valve 70 is arranged between the coolant outlet of the liquid cooling plate 40 and the liquid outlet branch pipe 60. The flow of the coolant is controlled by the first stop valve 30 and the third stop valve 70 at the same time, so as to control the flow rate of the coolant in the liquid cooling plate 40, and further control the cooling effect of the liquid cooling plate 40 on the heat generating element.

[0067] Among them, the coolant outlet, the third stop valve 70, and the liquid outlet branch pipe 60 can also be set to multiple ones. Specifically, it can be analogized to the embodiment of setting multiple coolant inlets 41, first stop valves 30, and liquid inlet branch pipes 20, and no redundant description will be given here.

[0068] On the basis of arranging the third stop valve 70 between the liquid cooling plate 40 and the liquid outlet branch pipe 60, a fourth stop valve 90 can be further arranged between the liquid outlet main pipe 80 and the liquid outlet branch pipe 60, so as to jointly control the outflow rate of the coolant flowing out of the liquid cooling plate 40 through the third stop valve 70 and the fourth stop valve 90, and avoid the third stop valve 70 from getting out of control or being damaged under the long-term flow impact, so as to enhance the reliability of the liquid cooling component while controlling the flow rate of the coolant in the liquid cooling plate 40. The specific implementation method can be as Figure 1 shown in the figure. Specifically, the liquid cooling component 1 further includes a liquid outlet main pipe 80 and a fourth stop valve 90. The second end of the liquid outlet branch pipe 60 is connected to the pipe body interface of the liquid outlet main pipe 80 through the fourth stop valve 90, so that the coolant in the liquid cooling plate 40 flows into the liquid outlet main pipe 80 quantitatively through the third stop valve 70, the liquid outlet branch pipe 60 and the fourth stop valve 90.

[0069] The second embodiment of arranging a stop valve on the path of the coolant flowing out of the liquid cooling plate 40 is that the liquid cooling component 1 further includes a liquid outlet branch pipe 60, a fourth stop valve 90 and a liquid outlet main pipe 80. The first end of the liquid outlet branch pipe 60 is connected to the coolant outlet of the liquid cooling plate 40, and the second end of the liquid outlet branch pipe 60 is connected to the pipe body interface of the liquid outlet main pipe 80 through the fourth stop valve 90, so that the coolant in the liquid cooling plate 40 flows into the liquid outlet main pipe 80 quantitatively through the liquid outlet branch pipe 60 and the fourth stop valve 90.

[0070] The difference between this implementation and the first implementation where a stop valve is provided in the path of the coolant flowing out of the liquid cooling plate 40 is that only a fourth stop valve 90 is provided between the main liquid outlet pipe 80 and the branch liquid outlet pipes 60, and a third stop valve 70 is not provided between the liquid cooling plate 40 and the branch liquid outlet pipes 60. This implementation can also control the flow rate of the coolant in the liquid cooling plate 40, thereby controlling the cooling effect of the liquid cooling plate 40 on the heat-generating components. At the same time, compared with the first implementation where a stop valve is provided in the path of the coolant flowing out of the liquid cooling plate 40, this implementation occupies less space and can meet the requirements of certain special scenarios.

[0071] In this embodiment, each stop valve can be set as a one-way stop valve or a two-way stop valve, and there are many forms of the structure of each stop valve. Exemplarily, each stop valve can be set as an integral structure, so as to fixedly install it at the position where it should be installed. Taking the first stop valve 30 as an example, the first stop valve 30 can be set as an integral part that cannot be disassembled with a liquid inlet and a liquid outlet. The liquid inlet of the first stop valve 30 is connected to the second end of the branch liquid inlet pipe 20, and the liquid outlet of the first stop valve 30 is connected to the coolant inlet 41 of the liquid cooling plate 40, so that the branch liquid inlet pipe 20 is connected to the coolant inlet 41.

[0072] The stop valve can also be set as a structure composed of multiple components spliced together. Taking the second stop valve 50 as an example, a feasible implementation is as Figure 4 shown. The second stop valve 50 includes a first valve body 51 and a second valve body 52. The first valve body 51 is fixedly connected to the first end of the branch liquid inlet pipe 20, and the second valve body 52 is fixedly connected to the pipe body interface of the main liquid inlet pipe 10. When the first valve body 51 and the second valve body 52 are butt-jointed and combined, the branch liquid inlet pipe 20 and the main liquid inlet pipe 10 are connected.

[0073] In this implementation, the second stop valve 50 is divided into two parts, namely the first valve body 51 and the second valve body 52. The first valve body 51 and the second valve body 52 are respectively fixedly connected to the branch liquid inlet pipe 20 and the main liquid inlet pipe 10. When the first valve body 51 and the second valve body 52 are butt-jointed and combined, the first valve body 51 and the second valve body 52 form a complete second stop valve 50, and the branch liquid inlet pipe 20 and the main liquid inlet pipe 10 are connected. And it can be further ensured that when the first valve body 51 and the second valve body 52 are separated from each other, the first valve body 51 blocks the first end of the branch liquid inlet pipe 20, and the second valve body 52 blocks the pipe body interface of the main liquid inlet pipe 10, so as to prevent the coolant from flowing away.

[0074] At the same time, when the stop valve is set as a structure composed of multiple components spliced together, the specific structural forms of different components can be the same or different. For example, both the first valve body 51 and the second valve body 52 can be two-way structures or three-way structures, etc., so that the spliced stop valve can adapt to different working conditions.

[0075] The first embodiment above introduced the liquid cooling component in detail. The following second embodiment introduces an energy storage device including the liquid cooling component of the above first embodiment. Specifically, as Figure 5 shown, Figure 5 is a schematic diagram of the overall structure of an energy storage device provided by the present application, which is provided with a liquid cooling component.

[0076] As shown in the figure, the energy storage device provided in this embodiment includes a battery pack 2 and any feasible liquid cooling component 1 provided in the above first embodiment. The liquid cooling plate 40 in the liquid cooling component 1 is arranged on one side of the battery pack 2 to exchange heat with the battery pack 2.

[0077] The specific structure of the liquid cooling component 1 of this energy storage device corresponds to that of the liquid cooling component 1 in the first embodiment. For the specific structure setting method, please refer to the relevant introduction of the liquid cooling component 1 in the first embodiment. The similarities will not be described in detail in this embodiment.

[0078] Among them, the battery pack 2 is a heat generating element. There are multiple battery packs 2 arranged side by side at intervals, and the liquid cooling plates 40 of the liquid cooling component 1 can also be set to multiple. Each liquid cooling plate 40 should be respectively arranged on one side of each battery pack 2, and specifically can be arranged in the interval between adjacent battery packs 2. The coolant inlets of each liquid cooling plate 40 are connected to the branch pipes of the coolant component through the first cut-off valves, so that the coolant is accurately distributed into each liquid cooling plate under the action of the first cut-off valves, making the coolant flow rates in each liquid cooling plate tend to be consistent, so as to cool down multiple battery packs relatively evenly.

[0079] In summary, in the above-described liquid cooling component and energy storage device, a first cut-off valve is provided between the inlet branch pipe of the liquid cooling component and the coolant inlet of the liquid cooling plate. The coolant in the inlet main pipe is first distributed to the inlet branch pipes, and then flows into the liquid cooling plates through the first cut-off valves. The flow rate of the coolant is always kept constant under the control of the first cut-off valves, so that the coolant can flow into the liquid cooling plates quantitatively, reducing the influence of factors such as gravity on the flow rate and inflow volume of the coolant flowing into the liquid cooling plates. When the liquid cooling plates are arranged corresponding to multiple heat generating elements, the coolant can be quantitatively flowed into each coolant inlet through multiple first cut-off valves, realizing the accurate distribution of the coolant, avoiding the phenomenon of local overheating or overcooling of the energy storage device, and improving the performance of the energy storage device.

[0080] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0081] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid cooling component, applied to an energy storage device, characterized in that The liquid cooling component includes: a liquid inlet main pipe, liquid inlet branch pipes, a first shut-off valve, and a liquid cooling plate; The first end of the liquid inlet branch pipe is connected to the pipe body interface of the liquid inlet main pipe, and the second end of the liquid inlet branch pipe is connected to the coolant inlet of the liquid cooling plate through the first shut-off valve, so that the coolant in the liquid inlet main pipe flows into the liquid cooling plate quantitatively through the liquid inlet branch pipe and the first shut-off valve; The liquid cooling component further includes a second shut-off valve; the first end of the liquid inlet branch pipe is connected to the pipe body interface of the liquid inlet main pipe through the second shut-off valve, so that the coolant in the liquid inlet main pipe flows into the liquid cooling plate quantitatively through the second shut-off valve, the liquid inlet branch pipe, and the first shut-off valve.

2. The liquid cooling component according to claim 1, wherein The second shut-off valve includes a first valve body and a second valve body; The first valve body is fixedly connected to the first end of the liquid inlet branch pipe, and the second valve body is fixedly connected to the pipe body interface of the liquid inlet main pipe; when the first valve body and the second valve body are butted and combined, the liquid inlet branch pipe and the liquid inlet main pipe are communicated.

3. The liquid cooling component according to claim 2, characterized in that, The second valve body is of a two-way structure or a three-way structure.

4. The liquid cooling component according to claim 1, wherein The number of the liquid inlet branch pipes, the pipe body interfaces of the liquid inlet main pipe, the first shut-off valves, and the coolant inlets are all multiple and are in one-to-one correspondence and matching; the first ends of the liquid inlet branch pipes are respectively connected to the corresponding pipe body interfaces, and the second ends of the liquid inlet branch pipes are respectively connected to the corresponding coolant inlets through the corresponding first shut-off valves.

5. The liquid cooling component according to claim 4, characterized in that The size specifications and opening and closing states of the first shut-off valves are the same, so that the coolant in the liquid inlet branch pipes flows into the liquid cooling plate equally from the corresponding coolant inlets.

6. The liquid cooling component according to claim 1, characterized in that The liquid cooling component further includes a liquid outlet branch pipe and a third shut-off valve; The first end of the liquid outlet branch pipe is connected to the coolant outlet of the liquid cooling plate through the third shut-off valve, so that the coolant in the liquid cooling plate flows out quantitatively through the third shut-off valve and the liquid outlet branch pipe.

7. The liquid cooling component according to claim 6, wherein The liquid cooling component further includes a liquid outlet main pipe and a fourth shut-off valve; the second end of the liquid outlet branch pipe is connected to the pipe body interface of the liquid outlet main pipe through the fourth shut-off valve, so that the coolant in the liquid cooling plate flows into the liquid outlet main pipe quantitatively through the third shut-off valve, the liquid outlet branch pipe, and the fourth shut-off valve.

8. The liquid cooling component according to claim 1, characterized in that The liquid cooling component further includes a liquid outlet branch pipe, a fourth shut-off valve, and a liquid outlet main pipe; The first end of the liquid outlet branch pipe is connected to the coolant outlet of the liquid cooling plate, and the second end of the liquid outlet branch pipe is connected to the pipe body interface of the liquid outlet main pipe through the fourth shut-off valve, so that the coolant in the liquid cooling plate flows into the liquid outlet main pipe quantitatively through the liquid outlet branch pipe and the fourth shut-off valve.

9. An energy storage device, characterized in that, The energy storage device includes a battery pack and the liquid cooling component according to any one of claims 1-8; the liquid cooling plate in the liquid cooling component is arranged on one side of the battery pack to exchange heat for the battery pack.

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