Liquid cooling pipeline mechanism and energy storage system with same

Abstract

The utility model relates to the technical field of liquid cooling, in particular to a liquid cooling pipeline mechanism and an energy storage system with the liquid cooling pipeline mechanism, the liquid cooling pipeline mechanism comprises a plurality of liquid cooling plates and a liquid supply pipe group, the liquid cooling plates are sequentially arranged at intervals in the height direction, the liquid supply pipe group is configured to be connected to each liquid cooling plate, and each liquid cooling plate communicates with a first connector; the liquid supply pipe set at least comprises a second-stage pipeline provided with at least one flow guide opening used for being connected with the liquid inlet pipeline or the liquid outlet pipeline, third-stage pipelines configured to be arranged in one-to-one correspondence with the liquid cooling plates and second connectors detachably installed in the first connectors, one ends of the third-stage pipelines are connected to the second-stage pipeline, and the other ends of the third-stage pipelines are connected to the third-stage pipelines. The other end of the first connector is detachably connected to the liquid cooling plate through an adapter; the second joint changes the sectional area of fluid passing through the first joint to adjust the flow; and meanwhile, additional trepanning and more sealing treatment are not needed, so that the production cost of the liquid cooling pipeline mechanism is reduced, and the flow regulation requirements of three-stage pipelines with different heights are met.

Description

Technical Field

[0001] This application relates to the field of liquid cooling technology, specifically to a liquid cooling pipeline mechanism, and further to an energy storage system including the liquid cooling pipeline mechanism. Background Art

[0002] The liquid cooling structure of an energy storage system generally includes a liquid cooling pipeline and a liquid cooling plate. The battery pack placed above it is cooled by the liquid cooling plate, and the heat of the battery pack is taken away by the liquid cooling pipeline and the coolant. A liquid cooling battery cluster is generally composed of 8-10 battery boxes arranged vertically. The liquid inlet direction of the secondary liquid cooling pipeline is usually bottom-in or top-in. Due to gravity, more coolant enters the liquid cooling plate corresponding to the bottom battery pack than that of the top, which will cause uneven coolant flow rate and flow in each PACK.

[0003] Chinese Patent CN118137010A discloses a liquid cooling structure, an energy storage system and a flow uniformity adjustment method. In its liquid cooling structure, a secondary pipe includes two branch pipes and two resistance matching joints. One of the resistance matching joints connects the two branch pipes, and one of the resistance matching joints connects a tertiary pipe. One of the resistance matching joints has an outlet hole structure, that is, by setting the outlet hole structure on the resistance matching joint and making the resistance matching joint detachably connected to the branch pipe, to realize the convenient replacement of the resistance matching joint with different aperture outlet hole structures and achieve the adjustment of the flow rate of different tertiary pipes. Combining the description of its specification and the drawings, it can be seen that the resistance matching joint is a tee joint, and the outlet hole structure is the outlet of the tee joint connecting to the tertiary pipe. Therefore, it mainly realizes the flow rate adjustment of the tertiary pipeline at different heights by changing the inner diameter of the outlet of different tee joints.

[0004] It should be noted that a liquid cooling battery cluster is generally composed of multiple battery boxes arranged vertically. Therefore, the above patent needs to set tee joints with different inner diameter outlets, and each tee joint needs to be separately molded and drilled, resulting in a relatively high actual production cost. Even if the tee joint is adopted in a detachable connection manner, when replacing the tee joint, sealing treatments still need to be made respectively for the three pipeline connection parts connected to it, further increasing the production cost. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a liquid cooling pipeline mechanism, which is convenient for adjusting the flow rate of the tertiary pipelines and the liquid cooling plate at different heights, can meet the disassembly and assembly requirements, and can reduce the production cost of the liquid cooling pipeline mechanism.

[0006] To achieve one of the aforementioned purposes, according to one aspect of the present application, a liquid cooling pipeline mechanism is provided, including:

[0007] Liquid cooling plates, which are sequentially arranged at intervals along the height direction, and each liquid cooling plate is communicated with a first joint;

[0008] A liquid supply pipe group, configured to be connected to each of the liquid cooling plates and at least including:

[0009] A secondary pipeline, provided with at least one diversion port for connecting an inlet pipeline or an outlet pipeline;

[0010] A tertiary pipeline, configured to be arranged corresponding to each of the liquid cooling plates, one end connected to the secondary pipeline, and the other end detachably connected to a first joint on the liquid cooling plate through an adapter;

[0011] A second joint, detachably installed inside each of the first joints, and configured to change the cross-sectional area of the fluid passing through the first joint to adjust its flow rate. Along the direction of height decrease, the cross-sectional area of the fluid passing through the first joint on each of the liquid cooling plates decreases in sequence.

[0012] In addition to one or more of the above, or as an alternative, in another embodiment, the first joint is configured as an outer cylinder body with a hollow interior and communicating with the interior chamber of the liquid cooling plate, and the second joint is configured as an inner cylinder body with a hollow interior. Along the direction of height decrease, the inner diameter of the second joint on each of the liquid cooling plates decreases in sequence.

[0013] In addition to one or more of the above, or as an alternative, in another embodiment, the outer diameter of the second joint is smaller than the inner diameter of the first joint to which it is connected, and the second joint is in clearance fit inside the first joint.

[0014] In addition to one or more of the above, or as an alternative, in another embodiment, an internal thread is formed on the inner wall of the first joint, and an external thread is formed on the outer wall of the second joint. The internal thread and the external thread cooperate to connect the first joint and the second joint.

[0015] In addition to one or more of the above, or as an alternative, in another embodiment, at least two first grooves are provided at the top end of the first joint, and at least two first protrusions are provided on the outer wall of the top end of the second joint, corresponding to the first grooves one by one and configured to be crimped inside the first grooves.

[0016] In addition to one or more of the above, or as an alternative, in another embodiment, there are two first grooves and two first protrusions, and the two first protrusions are symmetrically distributed with respect to the central axis of the second joint.

[0017] In addition to one or more of the above, or as an alternative, in another embodiment, the first groove extends axially downward from the top end face of the first joint for an end length, and the first protrusion is crimped into the inside of the first groove and the top surface is lower than the top end face of the first joint.

[0018] In addition to one or more of the above, or as an alternative, in another embodiment, the adapter is configured as an elbow with two interfaces, one of the two interfaces is fixedly mounted on the outer periphery of one end of the tertiary pipeline away from the secondary pipeline, and the other is detachably mounted on the outer periphery of the first joint.

[0019] In addition to one or more of the above, or as an alternative, in another embodiment, one of the outer periphery of the first joint and the inner wall of the interface of the adapter is provided with a second groove, and the other is provided with a second protrusion, the second groove and the second protrusion are engaged to connect the first joint and the adapter, and a seal is filled between the first joint and the adapter.

[0020] In addition to or as an alternative to one or more of the above, in another embodiment, the first joint is configured to be integrally formed with the liquid cooling plate.

[0021] In addition to one or more of the above, or as an alternative, in another embodiment, the liquid supply pipe group is configured as two, and the diversion ports of the two liquid supply pipe groups are both opened at the lower end of their secondary pipelines and are respectively connected to the liquid inlet pipeline and the liquid outlet pipeline.

[0022] In addition to one or more of the above, or as an alternative, in another embodiment, each of the liquid cooling plates is provided with two first joints, and the two first joints are correspondingly connected to two tertiary pipelines at the same height of the two liquid supply pipe groups.

[0023] In addition to one or more of the above, or as an alternative, in another embodiment, the second joint is detachably connected to the inside of the guide port of the secondary pipeline and one of the connection positions between the inlet and outlet liquid pipelines and the guide port.

[0024] In order to achieve one of the aforementioned purposes, according to another aspect of the present application, an energy storage system is provided, comprising a box body, a liquid cooling pipeline mechanism installed inside the box body and as described in the aforementioned aspects, and a battery pack placed correspondingly above each of the liquid cooling plates.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows: The liquid supply pipe group facilitates the connection with the liquid inlet pipeline or the liquid outlet pipeline, so that the coolant can circulate into or out of the liquid cooling plate, realizing the cooling of the battery pack located above the liquid cooling plate; the first joint provided on each liquid cooling plate can be correspondingly connected to the three-stage pipeline; by detachably installing the second joint inside the first joint, the flow rate can be adjusted by changing the cross-sectional area of the fluid passing through the first joint. Just by installing second joints with different inner diameters inside the first joints at different heights, the flow rate control of the liquid cooling plates at different heights can be achieved. While being convenient for disassembly and assembly, there is no need to additionally drill holes and do more sealing treatments, thereby reducing the production cost of the liquid cooling pipeline mechanism and meeting the flow rate adjustment requirements of the three-stage pipelines and liquid cooling plates at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Referring to the accompanying drawings, the disclosure of the present application will be more easily understood. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the protection scope of the present application.

[0027] In the drawings:

[0028] Figure 1 is a three-dimensional schematic diagram when a liquid cooling pipeline mechanism provided by the present utility model installs a battery pack;

[0029] Figure 2 is a three-dimensional structural diagram of the liquid supply pipe group of a liquid cooling pipeline mechanism provided by the present utility model;

[0030] Figure 3 is Figure 1 a partial enlarged view of A in

[0031] Figure 4 is Figure 3 a structural schematic diagram when removing the adapter and the three-stage pipeline;

[0032] Figure 5 is Figure 4 a structural schematic diagram when removing the second joint;

[0033] Figure 6 is a three-dimensional structural diagram of the first joint of a liquid cooling pipeline mechanism provided by the present utility model;

[0034] Figure 7 is a three-dimensional structural diagram of the second joint of a liquid cooling pipeline mechanism provided by the present utility model.

[0035] In the drawings: 1 liquid cooling plate, 2 first joint, 21 first groove, 22 second groove, 3 liquid supply pipe group, 31 secondary pipeline, 311 diversion port, 32 three-stage pipeline, 33 adapter, 34 second joint, 341 first protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will further describe the specific technical solutions of this application in detail with reference to the accompanying drawings in the embodiments of this application. The following embodiments are used to illustrate this application but are not used to limit the scope of this application.

[0037] In the embodiments of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0038] In addition, in the embodiments of this application, orientation terms such as "upper", "lower", "left", and "right" are defined relative to the orientation in which the components in the accompanying drawings are schematically placed. It should be understood that these directional terms are relative concepts, and they are used for relative description and clarification, and they may change accordingly with the change of the orientation in which the components in the accompanying drawings are placed.

[0039] In the embodiments of this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium.

[0040] In the embodiments of this application, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements but also other elements not expressly listed, or elements that are inherent to such process, method, article, or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article, or device that includes such element.

[0041] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0042] In the liquid cooling pipeline, multiple battery packs are stacked vertically. Due to gravity, the coolant flowing into the liquid cooling plates at the bottoms of the upper and lower battery packs is not uniform. On the premise that the sizes of the three-stage pipelines connected to each battery pack are the same, generally, the coolant flowing into the liquid cooling plate corresponding to the bottom PACK (battery pack) is greater than that of the top battery pack. In addition, there are other reasons that can also cause uneven flow rates of the liquid cooling plates at the bottoms of each PACK, such as the resistance effect of the tee joint, the resistance of the pipeline itself, the bending degree during installation, and burrs inside the pipe joint after hot melting. Therefore, the regulation of the coolant flow rate for stacked battery packs is an urgent problem to be solved.

[0043] Referring to the schematic diagram of the drawings in the specification of the comparative document CN118137010A, the tee joint (resistance matching joint), the diode (two branch pipes), and the connection between the lead-out hole structure and the three-stage pipe are all fixed by crimping. During actual use, it is not convenient to inspect the inner diameter of the tee joint. Even if the tee joint is detachably connected, sealing treatment still needs to be done for the three pipeline connection parts connected to it. Therefore, the actual production cost is relatively high. And usually, a battery cluster includes at least seven or eight battery packs. Therefore, the above patent needs to set tee joints with multiple different inner diameter lead-out ports, and each tee joint needs to be individually molded and drilled, further increasing the production cost.

[0044] Figure 1 It is a three-dimensional schematic diagram of the liquid cooling pipeline mechanism after placing the battery pack according to an embodiment of the present application. Refer to Figures 1 to 5 , the liquid cooling pipeline mechanism specifically includes: a plurality of liquid cooling plates 1 arranged at intervals in sequence along the height direction, and a liquid supply pipe group 3 configured to be connected to each liquid cooling plate 1. A first joint 2 is communicated with each liquid cooling plate 1; the liquid supply pipe group 3 at least includes: a secondary pipeline 31 provided with at least one diversion port 311 for connecting the liquid inlet pipeline or the liquid outlet pipeline, a tertiary pipeline 32 configured to be arranged corresponding to each liquid cooling plate 1 one by one, and a second joint 34 detachably installed inside each first joint 2; one end of the tertiary pipeline 32 is connected to the secondary pipeline 31, and the other end is detachably connected to the first joint 2 on the liquid cooling plate 1 through a connector 33; the second joint 34 is configured to change the cross-sectional area of the fluid passing through the first joint 2 to adjust its flow rate. Along the downward direction of the height, the cross-sectional area of the fluid passing through the first joint 2 on each liquid cooling plate 1 decreases in sequence.

[0045] It can be known that the liquid supply pipe group 3 facilitates connection with the liquid inlet pipeline or the liquid outlet pipeline respectively, so as to circulate the coolant into or out of the liquid cooling plate 1, realizing the cooling of the battery pack located above the liquid cooling plate 1; the first joint 2 arranged on each liquid cooling plate 1 can be connected to the three-stage pipeline 32; by detachably installing the second joint 34 inside the first joint 2, the flow rate can be adjusted by changing the cross-sectional area of the fluid passing through the first joint 2. Just install different second joints 34 inside the first joints 2 at different heights, and the flow rate control of the liquid cooling plates 1 at different heights can be achieved. While being convenient for disassembly and assembly, there is no need to additionally drill holes and do more sealing treatments, thereby reducing the production cost of the liquid cooling pipeline mechanism and meeting the flow rate adjustment requirements of the three-stage pipeline 32 at different heights.

[0046] It should be noted that referring to Figure 4 and Figure 5 , in the above liquid cooling pipeline mechanism, since the first joint 2 and the second joint 34 are detachably connected, when the second joint 34 needs to be replaced, only a second joint 34 with a suitable size needs to be pre-produced, disconnect the three-stage pipeline 32 from the first joint 2 through the detachable adapter 33, and then take out the second joint 34 from inside the first joint 2 to achieve its replacement.

[0047] In an implementation manner of this embodiment, along the direction of decreasing height, the cross-sectional area of the fluid passing through the first joint 2 on each liquid cooling plate 1 decreases in sequence. While ensuring that the overall flow velocity of the coolant inside the pipeline is not regulated, the uniform adjustment of the coolant for the battery packs at different heights from top to bottom is achieved. Of course, according to needs, the cross-sectional area of the fluid passing through the first joint 2 can also be set to increase in sequence along the height direction, or present an irregular distribution. This embodiment does not make specific limitations here.

[0048] When this embodiment is actually applied, referring to Figure 6 and Figure 7 , the first joint 2 is configured as an outer cylinder body that is hollow inside and communicates with the internal chamber of the liquid cooling plate 1, and the second joint 34 is configured as an inner cylinder body that is hollow inside. Along the direction of decreasing height, the inner diameter of the second joint 34 on each liquid cooling plate 1 decreases in sequence.

[0049] It is not difficult to see that the first joint 2 and the second joint 34 are respectively set as an outer cylinder body and an inner cylinder body, so as to utilize the thickness of the inner cylinder body itself to adjust the cross-sectional area of the fluid passing through the first joint 2; thus, by using the second joint 34 with a gradually decreasing inner diameter along the direction of decreasing height, the flow rate adjustment of the liquid cooling plates 1 at different heights is realized.

[0050] In a case of this embodiment, the outer diameter of the second joint 34 is smaller than the inner diameter of the first joint 2 it is connected to, and the second joint 34 is in clearance fit inside the first joint 2.

[0051] In another case of this embodiment, an internal thread is formed on the inner wall of the first joint 2, and an external thread is formed on the outer wall of the second joint 34. The internal thread and the external thread are engaged to connect the first joint 2 and the second joint 34.

[0052] It should be noted that the first joint 2 and the second joint 34 can be connected by means of a small clearance fit or a screw fit to ensure the assembly and disassembly of the first joint 2 and the second joint 34. Of course, the first joint 2 and the second joint 34 can also adopt a small interference fit, that is, the outer diameter of the second joint 34 is slightly larger than the inner diameter of the first joint 2. While ensuring a tight connection between the two, the detachable installation of the second joint 34 is realized. Therefore, the specific connection method of the first joint 2 and the second joint 34 is not a restrictive regulation of this embodiment.

[0053] Exemplarily, referring to Figure 6 and Figure 7 , both the above-mentioned outer cylinder and the inner cylinder can be set in the shape of a cylinder to ensure the smooth passage of the coolant. After the inner walls are smoothed, the frictional resistance can be further overcome; of course, not limited to this, the outer cylinder and the inner cylinder can also be a hollow cube structure inside, such as a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, etc. The specific structure thereof is not a restrictive regulation of this embodiment.

[0054] Exemplarily, the above-mentioned second joint 34 can also adopt the method of setting a baffle or a blocking net at the internal cross-section to change the cross-sectional area of the fluid passing through the first joint 2, or adopt the method of automatically adjusting the cross-sectional area. Therefore, the specific structure of the second joint 34 can be selected according to actual needs, as long as the detachable connection between the second joint 34 and the first joint 2 can be ensured. This embodiment does not make specific limitations here.

[0055] When this embodiment is actually applied, along the direction of height decrease, the inner diameters of the second joints 34 on each liquid cooling plate 1 decrease in sequence. Of course, the inner diameter of the second joint 34 can also be adjusted and replaced according to the actual measured value of the temperature difference of the battery pack connected thereto to achieve the best temperature difference adjustment effect. Therefore, the distribution law of the inner diameters of the second joints 34 at different heights is not a restrictive regulation of this embodiment.

[0056] When this embodiment is actually operated, the PACK (battery pack) and the liquid cooling plate 1 can be made of the same material. Only a second joint 34 needs to be added to the liquid cooling plate 1. The cost is lower and the installation is more convenient. At the same time, it is also convenient to check the inner diameter of the second joint 34 to test whether there is a misassembly; if there is a misassembly of the second joint 34, it can also be easily taken out for replacement.

[0057] Exemplarily, the inner diameter of the second joint 34 can have multiple options. Different inner diameters of the second joint 34 can be installed in each battery box from bottom to top for arbitrary resistance matching to achieve the best effect.

[0058] In actual operation of this embodiment, referring to Figure 6 and Figure 7 , at least two first grooves 21 are provided at the top end of the first joint 2, and at least two first protrusions 341 corresponding to the first grooves 21 one by one and configured to be crimped inside the first grooves 21 are provided on the outer wall of the top end of the second joint 34.

[0059] It is not difficult to see that through the first grooves 21 provided on the first joint 2 and the first protrusions 341 provided on the second joint 34, it is convenient to crimp the first protrusions 341 inside the first grooves 21 to limit the radial direction of the second joint 34 relative to the first joint 2 and ensure the stable installation of the second joint 34 during use.

[0060] Furthermore, both the first grooves 21 and the first protrusions 341 are provided with two, and the two first protrusions 341 are symmetrically distributed with respect to the central axis of the second joint 34.

[0061] Even further, the first grooves 21 extend axially downward from the top end face of the first joint 2 for a certain length, and the first protrusions 341 are crimped inside the first grooves 21 and the top surfaces are lower than the top end face of the first joint 2.

[0062] It can be known that the two first protrusions 341 are symmetrically distributed with respect to the central axis of the second joint 34, so that the second joint 34 is more evenly stressed when the coolant flows through, and the top surfaces of the first protrusions 341 are lower than the top end face of the first joint 2 to ensure that the coolant smoothly flows into the second joint 34.

[0063] Exemplarily, a plurality of the first grooves 21 and the first protrusions 341 can be provided along the circumferences of the corresponding components. The upper and lower ends of the second joint 34 are smoothly transitioned and the inner part is set as a smooth curved surface, thereby avoiding the generation of bubbles when the coolant flows through and preventing possible cavitation phenomena.

[0064] In one case of this embodiment, referring to Figure 3 , the adapter 33 is configured as an elbow with two interfaces. One of the two interfaces is fixedly sleeved on the outer periphery of the end of the three-stage pipeline 32 facing away from the two-stage pipeline 31, and the other is detachably sleeved on the outer periphery of the first joint 2.

[0065] It can be known that by fixedly sleeving one end of the adapter 33 on the outer periphery of one end of the three-stage pipeline 32, coolant leakage at the connection between the three-stage pipeline 32 and the adapter 33 can be avoided, and the other end is detachably sleeved on the outer periphery of the first joint 2, which is convenient for disassembling, assembling and replacing the second joint 34.

[0066] On this basis, referring to Figure 3 and Figure 5 , a second groove 22 is provided on one of the outer periphery of the first joint 2 and the inner wall of the interface of the adapter 33, and a second protrusion is provided on the other. The second groove 22 and the second protrusion are engaged to connect the first joint 2 and the adapter 33, and a seal is filled between the first joint 2 and the adapter 33.

[0067] It is not difficult to see that through the second groove 22 and the second protrusion, it is convenient to snap-connect the first joint 2 and the adapter 33. The seal provided between the two can seal the connection part to fill the gap between the two, avoiding leakage during the flow of the coolant, so as to ensure the sealed connection between the two.

[0068] Exemplarily, the seal can be set as a sealing ring sleeved on the outer wall of the first joint 2, and the first joint 2 is configured to be integrally formed with the liquid cooling plate 1.

[0069] In another case of this embodiment, as Figure 1 and Figure 2 shown, the liquid supply pipe group 3 is configured to be two, and the diversion ports 311 of the two liquid supply pipe groups 3 are both opened at the lower end of their secondary pipelines 31, and are respectively connected to the liquid inlet pipeline and the liquid outlet pipeline.

[0070] Further, referring to Figure 1 , each liquid cooling plate 1 is provided with two first joints 2, and the two first joints 2 are correspondingly connected to two tertiary pipelines 32 at the same height of the two liquid supply pipe groups 3.

[0071] In this arrangement, by using the diversion port 311 provided at the bottom end of the secondary pipeline 31, it is convenient to connect the two liquid supply pipe groups 3 to the liquid inlet pipeline and the liquid outlet pipeline respectively. Each liquid cooling plate 1 is connected with two first joints 2, corresponding to two tertiary pipelines 32 at the same height of the two liquid supply pipe groups 3, so as to realize the circulating flow of the coolant for a row of battery clusters.

[0072] Exemplarily, the liquid supply pipe group 3 can also be set to be multiple, corresponding to different battery clusters; multiple first joints 2 can also be provided on each liquid cooling plate 1, so that one liquid cooling plate 1 can be simultaneously connected to multiple tertiary pipelines 32 on the same liquid supply pipe group 3, or multiple first joints 2 on the same liquid cooling plate 1 can be connected through multiple adapters 33 at the end of one tertiary pipeline 32. Therefore, the number of the liquid supply pipe group 3, the tertiary pipeline 32, and the first joints 2 provided on the liquid cooling plate 1 can all be selected according to needs, and no specific limitation is made in this embodiment.

[0073] In a more specific embodiment, exemplarily, a second joint 34 is detachably connected to either the inside of the diversion port 311 of the secondary pipeline 31 or the connection position between the liquid inlet and outlet pipeline and the diversion port 311.

[0074] It can be known that by installing the second joint 34 in the secondary pipeline 31, the liquid inlet pipeline or the liquid outlet pipeline, the coolant flow rate adjustment and distribution of multiple secondary pipelines 31 connected to the primary pipeline can be realized, meeting the control and distribution of coolant between different battery clusters. This embodiment provides another installation method to meet different requirements. Therefore, the specific installation position of the second joint 34 is not a restrictive limitation of this embodiment.

[0075] This embodiment also provides an energy storage system, including a box body, a liquid cooling pipeline mechanism installed inside the box body as described above, and battery packs correspondingly placed on each liquid cooling plate 1.

[0076] On this basis, referring to Figure 1 , when the liquid cooling pipeline mechanism is installed in the energy storage system, the cooling of the battery pack above the liquid cooling plate 1 can be realized; the first joint 2 provided on each liquid cooling plate 1 can be connected to the tertiary pipeline 32; by detachably installing the second joint 34 inside the first joint 2, the cross-sectional area of the fluid passing through the first joint 2 located on the liquid cooling plate 1 can be changed, thereby adjusting its flow rate. Just by installing different second joints 34 inside the first joints 2 at different heights, the flow rate control of the coolant inside the liquid cooling plates 1 at different heights can be realized. While being convenient for disassembly and assembly, there is no need to additionally drill holes and do more sealing treatments, thereby reducing the production cost of the energy storage system, meeting the flow rate adjustment requirements of the tertiary pipelines 32 at different heights inside the energy storage system, and further meeting the cooling requirements of battery packs at different heights.

[0077] It should be noted that the above liquid cooling plate 1 and the battery pack can be of an integrated structure or a split installation structure, that is, the liquid cooling plate 1 and the battery pack are set as two separate parts. Regarding its specific setting method, it can be selected according to needs, and this embodiment does not make specific limitations here.

[0078] The above examples mainly illustrate the liquid cooling pipeline mechanism of the present application and the energy storage system including this liquid cooling pipeline mechanism. Although only some embodiments of the present application are described, those of ordinary skill in the art should understand that the present application can be implemented in many other forms without departing from its gist and scope. Therefore, the examples and embodiments shown are regarded as illustrative rather than restrictive, and the present application may cover various modifications and substitutions without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A liquid cooling pipeline mechanism, characterized in that, Comprising: Liquid cooling plates, which are arranged at intervals in sequence along the height direction, and each of the liquid cooling plates is communicated with a first joint; A liquid supply pipe group, which is configured to be connected to each of the liquid cooling plates and at least includes: A secondary pipeline, which is provided with at least one diversion port for connecting an inlet pipeline or an outlet pipeline; A tertiary pipeline, which is configured to be arranged corresponding to each of the liquid cooling plates, one end of which is connected to the secondary pipeline, and the other end of which is detachably connected to the first joint on the liquid cooling plate through an adapter; A second joint, which is detachably installed inside each of the first joints, and is configured to change the cross-sectional area of the fluid passing through the first joint to adjust its flow rate. Along the direction of height decrease, the cross-sectional area of the fluid passing through the first joint on each of the liquid cooling plates decreases in sequence.

2. The liquid cooling pipeline mechanism according to claim 1, wherein The first joint is configured as an outer cylinder body with a hollow interior and communicated with the internal cavity of the liquid cooling plate, and the second joint is configured as an inner cylinder body with a hollow interior. Along the direction of height decrease, the inner diameter of the second joint on each of the liquid cooling plates decreases in sequence.

3. The liquid cooling pipeline mechanism according to claim 2, wherein The outer diameter of the second joint is smaller than the inner diameter of the first joint to which it is connected, and the second joint is in clearance fit inside the first joint.

4. The liquid cooling pipeline mechanism according to claim 2, wherein Internal threads are formed on the inner wall of the first joint, and external threads are formed on the outer wall of the second joint. The internal threads and the external threads cooperate to connect the first joint and the second joint.

5. The liquid cooling pipeline mechanism according to claim 1, characterized in that, At least two first grooves are formed at the top end of the first joint, and at least two first protrusions are provided on the outer wall of the top end of the second joint, which are in one-to-one correspondence with the first grooves and are configured to be pressed inside the first grooves.

6. The liquid cooling pipeline mechanism according to claim 5, wherein Both the first grooves and the first protrusions are provided with two, and the two first protrusions are symmetrically distributed relative to the central axis of the second joint.

7. The liquid cooling pipeline mechanism according to claim 5, wherein The first grooves extend axially downward from the top end face of the first joint for a certain length, and the first protrusions are pressed inside the first grooves and the top surfaces are lower than the top end face of the first joint.

8. The liquid cooling pipeline mechanism according to claim 1, wherein The adapter is configured as an elbow with two interfaces. One of the two interfaces is fixedly sleeved on the outer periphery of the end of the tertiary pipeline away from the secondary pipeline, and the other is detachably sleeved on the outer periphery of the first joint.

9. The liquid cooling pipeline mechanism according to claim 8, characterized in that, One of the outer periphery of the first joint and the inner wall of the interface of the adapter is provided with a second groove, and the other is provided with a second protrusion. The second groove and the second protrusion are engaged to connect the first joint and the adapter, and a sealing member is filled between the first joint and the adapter.

10. The liquid cooling pipeline mechanism according to claim 1, characterized in that, The first joint is configured to be integrally formed with the liquid cooling plate.

11. The liquid cooling pipeline mechanism according to claim 1, wherein The liquid supply pipe group is configured to be two. The diversion ports of the two liquid supply pipe groups are both opened at the lower ends of their secondary pipelines and are respectively connected to the inlet pipeline and the outlet pipeline.

12. The liquid cooling pipeline mechanism according to claim 11, wherein, Each of the liquid cooling plates is provided with two first joints, and the two first joints are correspondingly connected to the two tertiary pipelines at the same height of the two liquid supply pipe groups.

13. The liquid cooling pipeline mechanism according to claim 1, characterized in that, One of the inside of the diversion port of the secondary pipeline and the connection position between the inlet and outlet pipelines and the diversion port is detachably connected with the second joint.

14. An energy storage system, characterized in that, Including a box body, installed inside the box body and The liquid cooling pipeline mechanism according to any one of claims 1-13, and battery packs correspondingly placed above each of the liquid cooling plates.

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