CN118836326A - Liquid cooling pipe joint, liquid cooling pipeline device and energy storage system - Google Patents

Abstract

The application relates to a liquid cooling pipe joint, a liquid cooling pipeline device and an energy storage system, wherein the liquid cooling pipe joint comprises: a plurality of first bridging tube sets; one ends of the plurality of first bridging tube groups are communicated to the liquid collecting tube; a second bridging tube group, one end of which is communicated with the liquid collecting tube; and the stop valve is arranged in the second bridging tube. Therefore, according to the scheme, only one stop valve is arranged on the second bridging tube group, so that the problem that when the machine is stopped for maintenance, the cooling liquid in the pipeline can be prevented from leaking through the stop valve can be solved, compared with the prior art, the installation quantity of the stop valves is greatly reduced, the influence on the pressure drop of the cooling liquid flowing to the battery module is small, and the heat management effect can be further guaranteed. In addition, the number of the stop valves is reduced, the structure composition of the liquid cooling pipe joint can be further simplified, and the use and manufacturing cost is reduced.

Description

Liquid cooling pipe joint, liquid cooling pipeline device and energy storage system

Technical Field

The present application relates to the field of energy storage technology, and in particular to a liquid cooling pipe joint, a liquid cooling pipeline device and an energy storage system.

Background Art

With the development of energy storage technology, various energy storage systems are widely used in new energy vehicles, industrial production and other industries. Generally, the energy storage system includes a battery module, a liquid cooling pipe system and a liquid cooling unit. The battery module is connected to the liquid cooling unit through the liquid cooling pipe system, so that the battery module can be thermally managed with the help of the liquid cooling unit to ensure the safe and reliable operation of the energy storage system.

However, currently each battery module in the battery module is configured with a liquid inlet branch pipe, and in order to prevent coolant leakage during maintenance, a stop valve is installed on each liquid inlet branch pipe. However, the simultaneous existence of multiple stop valves will affect the pressure drop of the coolant flowing through the battery module, thereby resulting in poor thermal management effect and affecting the safety and reliability of the energy storage system operation.

Summary of the invention

Based on this, it is necessary to provide a liquid cooling pipe joint, a liquid cooling pipeline device and an energy storage system to address the issues that affect the cooling hydraulic pressure drop and thermal management effect.

In one aspect, the present application provides a liquid cooling pipe joint, the liquid cooling pipe joint comprising:

A plurality of first bridge takeover groups;

A liquid manifold, one end of each of the plurality of first bridge tube groups is connected to the liquid manifold;

A second bridge pipe group, one end of which is connected to the liquid collecting pipe; and

A stop valve is installed in the second bridge pipe.

The liquid cooling pipe joint of the above scheme is used in the occasion of connecting the battery module and the liquid cooling unit, so as to realize the thermal management of the battery module by the liquid cooling unit. Specifically, during installation, multiple first bridge pipe groups can be respectively connected to the corresponding battery modules in the battery module, and multiple first bridge pipe groups and second bridge pipe groups are installed and integrated on the manifold at the same time. Therefore, only one stop valve needs to be installed on the second bridge pipe group to meet the requirement that when the machine is shut down for maintenance, the stop valve can prevent the coolant inside the pipeline from leaking. Compared with the prior art, the number of stop valves installed is greatly reduced, and the pressure drop of the coolant flowing through the battery module is small, thereby ensuring the thermal management effect. In addition, reducing the number of stop valves installed can further simplify the structure of the liquid cooling pipe joint and reduce the use and manufacturing costs.

The technical solution of this application is further described below:

In one embodiment, the first bridge tube group includes a first bridge tube body and a first connector, one end of the first bridge tube body is connected to the manifold, the other end of the first bridge tube body is connected to the first connector, and the first connector is used to connect to a corresponding battery module.

In one embodiment, the second bridge tube group includes a second bridge tube body and a second joint, one end of the second bridge tube body is connected to the liquid manifold, and the other end of the second bridge tube body is connected to the second joint, and the second joint is used to directly or indirectly connect to the liquid cooling unit.

In one embodiment, the first connector and the second connector are quick-connect connectors.

In one embodiment, a plurality of the first bridge tube groups are arranged side by side at intervals in the length direction of the manifold, and the second bridge tube group is used to connect two adjacent manifolds;

The internal flow channel of the manifold is divided into a plurality of branch flow channels, and the plurality of branch flow channels are arranged along the length direction of the manifold, and each of the branch flow channels is connected to a corresponding first bridge tube group; wherein, the closer the branch flow channel is to the second bridge tube group, the smaller the diameter, and the farther the branch flow channel is from the second bridge tube group, the larger the diameter.

In one embodiment, the second bridging tube body includes a first connecting portion and a second connecting portion, the first connecting portion includes an inner wall surface and a latching tooth arranged on the inner wall surface, the end of the manifold connected to the first connecting portion is provided with a latching groove, and the latching tooth is adapted to be latched in the latching groove.

In one of the embodiments, the liquid cooling pipe joint further includes a plurality of throttle valves, and the throttle valves are arranged one by one in the first bridge pipe group.

In one embodiment, the manifold includes a plurality of manifold sections and a plurality of reflux tees, and three interfaces of each reflux tee are respectively sealed and connected to two adjacent manifold sections and one of the first bridge pipe groups;

The liquid conduit section and the first bridge pipe group are respectively rotatable relative to the reflux tee, and the second bridge pipe group is connected to one of the liquid conduit sections.

In one embodiment, the manifold further comprises two reflux two-way pipes, which are respectively arranged at two ends of the manifold in the length direction, and two interfaces of the reflux two-way pipes are respectively sealed and connected to one of the manifold sections and one of the first bridge pipe groups which are arranged adjacently;

The liquid confluence pipe section and the first bridge pipe group are respectively capable of rotating relative to the two-way pipe of the reflux pump.

On the other hand, the present application also provides a liquid cooling pipeline device, which includes the liquid cooling pipe joint as described above.

In addition, the present application also provides an energy storage system, which includes:

Battery module;

The liquid cooling piping device as described above; and

A liquid cooling unit is connected to the battery module through the liquid cooling pipeline device to achieve thermal management of the battery module.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of an energy storage system according to an embodiment of the present application.

FIG. 2 is a schematic structural diagram of a battery module according to an embodiment.

FIG. 3 is an assembly structure diagram of the battery module and the liquid cooling pipe joint in FIG. 1 .

FIG. 4 is a side structural diagram of FIG. 3 .

FIG. 5 is a schematic structural diagram of a liquid inlet pipe joint according to an embodiment.

FIG. 6 is a top view of the structure of FIG. 5 .

FIG7 is a cross-sectional structural diagram of the A-A position in FIG6.

FIG. 8 is a schematic diagram of a local enlarged structure of point B in FIG. 4 .

FIG. 9 is a schematic diagram of a partially enlarged structure of point C in FIG. 7 .

FIG. 10 is a cross-sectional view of the internal flow channel structure of the manifold.

FIG. 11 is a schematic diagram of a local enlarged structure of point D in FIG. 10 .

Description of reference numerals:

100, energy storage system; 10, energy storage cabinet; 20, battery module; 21, battery module; 211, liquid cooling plate; 212, battery cell; 213, liquid inlet connector; 213a, card slot; 214, liquid outlet connector; 30, liquid cooling unit; 40, liquid cooling pipe connector; 41, liquid inlet connector; 411, first bridge pipe group; 411a, first bridge pipe body; 411b, first connector; 4111b, card body; 412, liquid manifold; 412a, liquid manifold section; 412b, reflux tee; 412c, reflux tee; 412d, branch flow channel; 413, second bridge pipe group; 413a, second bridge pipe body; 413b, second connector; 414, stop valve; 415, throttle valve; 42, liquid outlet connector.

DETAILED DESCRIPTION

In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

1 , the present application provides an energy storage system 100, which includes an energy storage cabinet 10, a battery module 20, a liquid cooling pipeline device, and a liquid cooling unit 30. The energy storage cabinet 10 is the main bearing structure of the energy storage system 100, which is used to load the battery module 20, the liquid cooling pipeline device, and the liquid cooling unit 30, thereby improving the integration level of the energy storage system 100.

Please continue to refer to FIG. 2 to FIG. 4 . Specifically, the energy storage system 100 includes a plurality of battery modules 20 . The plurality of battery modules 20 are connected in series or in parallel to form a battery assembly, thereby improving the energy storage capacity.

Each battery module 20 includes a plurality of battery modules 21, and the plurality of battery modules 21 are electrically connected in series. The battery module 21 includes at least two battery cells 212 and a liquid cooling plate 211, and at least two battery cells 212 are arranged side by side on the liquid cooling plate 211. The liquid cooling plate 211 is also provided with a liquid inlet connector 213 and a liquid outlet connector 214 to facilitate the connection and removal of the cooling liquid.

According to actual needs, the energy storage cabinet 10 can be a fixed structure or a movable structure. When a fixed structure is adopted, a support member such as a fixed support leg can be installed at the bottom of the energy storage cabinet 10. When a movable structure is adopted, a movable member such as a roller and a track can be installed at the bottom of the energy storage cabinet 10. These can be flexibly selected according to specific actual needs.

The liquid cooling unit 30 is connected to the battery module 20 through a liquid cooling pipeline device to achieve thermal management of the battery module 20. Because the battery module 20 will generate a lot of heat when working for a long time, and in order to avoid the high temperature environment affecting the service life and reliability of the battery module 20, it is necessary to configure the liquid cooling unit 30, by delivering circulating coolant (such as cooling water, cooling oil, etc.) to the battery module 20, the coolant and the battery module 20 perform heat exchange to take away the heat, which can achieve the effect of cooling and dissipating heat for the battery module 20.

The liquid cooling unit 30 has a liquid infusion pipeline and a liquid return pipeline, and the liquid cooling pipeline device includes a liquid cooling pipe joint 40 .

For example, please continue to refer to FIG. 3 and FIG. 4 , which are a liquid cooling pipe joint 40 shown in an embodiment of the present application, which is composed of a liquid inlet pipe joint 41 and a liquid outlet pipe joint 42. During installation, the liquid inlet pipe joint 41 connects the liquid infusion pipeline with the liquid inlet joints 213 on all battery modules 21, and the liquid outlet pipe joint 42 connects the liquid return pipeline with the liquid outlet joints 214 on all battery modules 21, thereby building a circulation loop for the flow of coolant between the liquid cooling unit 30 and the battery module 20, so that the liquid cooling unit 30 can continuously and effectively manage the heat of the battery module 20.

Please continue to refer to Figures 5 to 7. In order to reduce manufacturing difficulty and cost and improve the universal interchangeability of components, the liquid inlet pipe joint 41 and the liquid outlet pipe joint 42 adopt the same structural design, both of which include: multiple first bridge pipe groups 411, liquid collecting pipes 412, second bridge pipe groups 413 and stop valves 414.

One end of each first bridge tube group 411 is used to communicate with the corresponding battery module 21. Specifically, the first bridge tube group 411 of the liquid inlet pipe joint 41 is connected to the liquid inlet joint 213 of the battery module 21, and the first bridge tube group 411 of the liquid outlet pipe joint 42 is connected to the liquid outlet joint 214 of the battery module 21. The other ends of the plurality of first bridge tube groups 411 are all connected to the liquid manifold 412; one end of the second bridge tube group 413 is connected to the liquid manifold 412; and the stop valve 414 is installed in the second bridge tube.

In summary, the implementation of the technical solution of this embodiment will have the following beneficial effects: the liquid cooling pipe joint 40 of the above solution is applied to the occasion of connecting the battery module 20 and the liquid cooling unit 30, so as to realize the thermal management of the battery module 20 by the liquid cooling unit 30. Specifically, during installation, multiple first bridge pipe groups 411 can be connected to the corresponding battery modules 21 in the battery module 20, and multiple first bridge pipe groups 411 and second bridge pipe groups 413 are installed and integrated on the manifold 412 at the same time. Therefore, only one stop valve 414 is installed on the second bridge pipe group 413 to prevent the coolant inside the pipeline from leaking when the machine is shut down for maintenance. Compared with the prior art, the number of stop valves 414 installed is greatly reduced. The so-called pressure drop refers to the pressure drop caused by energy loss when the fluid flows in the pipe. The greater the pressure drop, the greater the impact on the circulating liquid cooling of the liquid cooling unit. The present application adopts a solution of reducing the stop valve, which has little effect on the pressure drop of the coolant flowing through the battery module 20, thereby ensuring the thermal management effect. In addition, reducing the number of stop valves 414 installed can further simplify the structure of the liquid cooling pipe joint 40 and reduce the use and manufacturing costs.

In some embodiments, the first bridge tube assembly 411 includes a first bridge tube body 411a and a first connector 411b, one end of the first bridge tube body 411a is connected to the manifold 412, and the other end of the first bridge tube body 411a is connected to the first connector 411b, and the first connector 411b is used to communicate with the corresponding battery module 21. Therefore, the first connector 411b can be quickly and effectively connected to the liquid inlet connector 213 and the liquid outlet connector 214 on the battery module 21, so as to realize the connection between the first bridge tube body 411a and the battery module 21 to facilitate the flow of coolant.

In other embodiments, the second bridge tube assembly 413 includes a second bridge tube body 413a and a second joint 413b, one end of the second bridge tube body 413a is connected to the manifold 412, and the other end of the second bridge tube body 413a is connected to the second joint 413b, and the second joint 413b is used to directly or indirectly connect to the liquid cooling unit 30. Therefore, the second joint 413b can be quickly and effectively connected to the liquid cooling unit 30, so as to realize the circulation of the cooling liquid in and out of the second bridge tube body 413a and the liquid cooling unit 30.

According to actual needs, the second bridge tube body 413a and the second joint 413b can be an integrated structure or a detachable assembly structure. The second bridge tube body 413a and the liquid cooling unit 30 can be an integrated structure or a detachable assembly structure. Further, the second bridge tube body 413a is an L-shaped structure to reduce space occupation and improve installability.

In actual work, the liquid cooling pipe joint 40 is often plugged in or disassembled, which may easily cause the first joint 411b and/or the second joint 413b to wear and need to be replaced. Most traditional liquid cooling pipeline devices are integrated structures, which may cause the first joint 411b and/or the second joint 413b to wear, and the entire liquid cooling pipeline device needs to be replaced together, resulting in increased costs and waste of resources. In view of this, in some embodiments of the present application, the first joint 411b and the second joint 413b use quick-insert connectors. In this way, the damaged liquid cooling pipe joint 40 can be easily disassembled and replaced separately, that is, the effect of only replacing the locally worn components of the liquid cooling pipeline device is achieved, thereby effectively solving the above-mentioned problems.

Optionally, the quick-plug connector can be any one of a snap-on quick-plug connector, a magnetic quick-plug connector, etc., and the specific selection can be made according to actual needs.

As shown in FIG8 , for example, taking the quick-plug connection structure of the first connector 411b and the liquid inlet connector 213 on the battery module 21 as an example, a card body 4111b is convexly provided on the inner wall of the first connector 411b, and a card groove 213a aligned with the card body 4111b is concavely provided on the outer wall of the liquid inlet connector 213. When the liquid inlet connector 213 is inserted into the first connector 411b, the card body 4111b is snap-connected with the card groove 213a, thereby realizing quick and convenient assembly of the first connector 411b and the liquid inlet connector 213, and having good sealing performance. Of course, it is also possible to have a card groove concavely provided on the inner wall of the first connector 411b, and a card body convexly provided on the outer wall of the liquid inlet connector 213. The connector connection method of the second connector 413b and the liquid cooling unit 30 is the same as the above structure, so it is not repeated here.

As shown in Figure 5, in addition, based on any of the above embodiments, multiple first bridge tube groups 411 are arranged side by side at intervals in the length direction of the manifold 412, and the second bridge tube group 413 is connected to the middle or close to the middle of the manifold 412. For example, in this embodiment, the second bridge tube group 413 is connected to the close to the middle of the manifold 412.

Furthermore, the second bridge pipe group 413 is also used to connect two adjacent manifolds 412. It should be noted that in this embodiment, there is a certain configuration relationship between the number of manifolds 412, the second bridge pipe group 413 and the battery module 20. For example, when two rows of battery modules 20 are arranged side by side, two manifolds 412 and one second bridge pipe group 413 are required to be arranged at the same time, and the second bridge pipe group 413 is connected to two adjacent manifolds 412, and the manifolds 412 are connected to the battery modules 20 in a one-to-one correspondence; when four rows of battery modules 20 are arranged side by side, four manifolds 412 and two second bridge pipe groups 413 are required to be arranged at the same time, and each second bridge pipe group 413 is connected to two manifolds 412, and all manifolds 412 are connected in sequence, and the manifolds 412 are arranged to correspond to the battery modules 20, and so on.

As shown in Figures 10 and 11, the internal flow channel of the manifold 412 is divided into a plurality of branch flow channels 412d, and the plurality of branch flow channels 412d are arranged along the length direction of the manifold 412, and each branch flow channel 412d is connected to a corresponding first bridge tube group 411; wherein, the closer the branch flow channel 412d is to the second bridge tube group 413, the smaller the diameter is, and the farther the branch flow channel 412d is from the second bridge tube group 413, the larger the diameter is.

By adopting the design of setting multiple branch flow channels 412d with variable diameter structures, it is possible to achieve a slow flow rate of coolant flowing into the battery module 21 connected to the branch flow channel 412d close to the second bridge tube body 413a, while a fast flow rate of coolant flowing into the battery module 21 connected to the branch flow channel 412d far away from the second bridge tube body 413a, that is, to achieve the control of the time points when all battery modules 21 receive the coolant to be more consistent, thereby ensuring good uniformity of the coolant flow in each battery module 21, reducing the temperature difference between different battery modules 21, and improving the cycle life and thermal management efficiency of the battery module 20.

As shown in FIG. 7 and FIG. 9 , or as an alternative to the above embodiment, the liquid cooling pipe joint 40 further includes a plurality of throttle valves 415, which are arranged one by one in the first bridge pipe group 411. By controlling the opening and closing time and the opening size of each throttle valve 415, the time point at which the coolant reaches each branch flow channel 412d can be controlled to be consistent, so that the flow rate of the coolant flowing into each battery module 21 is uniform, the temperature difference is reduced, and the heat dissipation and cooling effect is improved.

Please continue to refer to FIG. 5. In some embodiments, the manifold 412 includes a plurality of manifold sections 412a and a plurality of return tees 412b. The three interfaces of each return tee 412b are respectively sealed and connected with two adjacent manifold sections 412a and a first bridge pipe group 411. By splicing different numbers of manifold sections 412a and return tees 412b, manifolds 412 of different lengths can be obtained and adapted to different numbers of first bridge pipe groups 411, thereby meeting the installation requirements of battery modules 21 with different numbers, and improving the application range of the liquid cooling pipe joint 40. The assembly method of the manifold section 412a, the return tee 412b and the first bridge pipe group 411 is simple, and the connection is safe and reliable.

Furthermore, the manifold 412 further includes two reflux two-way pipes 412c, which are respectively arranged at two ends of the manifold 412 in the length direction, and two interfaces of the reflux two-way pipes 412c are respectively sealed and connected with an adjacent manifold section 412a and a first bridge pipe group 411. The reflux two-way pipes 412c arranged at the two ends of the manifold 412 can achieve the purpose of connecting the two first bridge pipe groups 411 located at the two ends of the manifold 412 with the manifold 412, while being able to achieve the sealing of the ends of the manifold 412.

Among them, the liquid conduit section 412a and the first bridge pipe group 411 can rotate relative to the reflux tee 412b respectively, and the second bridge pipe group 413 is connected to one of the liquid conduit sections 412a. The liquid conduit section 412a and the first bridge pipe group 411 can rotate relative to the reflux two-way respectively. In this way, the second bridge pipe group 413 can be rotated up and down with the help of the liquid conduit section 412a assembled with it, thereby forming an arrangement at different angles, which is convenient for avoiding obstacles under different installation conditions and connecting with the infusion pipeline and the return pipeline. The reflux tee 412b and the reflux two-way 412c can rotate relative to the liquid conduit section 412a and the first bridge pipe group 411, which can eliminate the influencing factors of installation size error and deformation, and ensure the smooth and normal assembly of each component.

It should be noted that the reflux tee 412b connected to the second bridge tube group 413 is actually a confluence portion. In order to ensure the flow rate of the coolant in the confluence portion and thus ensure the liquid cooling efficiency, when the sizes of all the reflux tees 412b and the reflux two-way 412c are the same, the valve port width of the throttle valve 415 installed in the reflux tee 412b connected to the second bridge tube group 413 is greater than the valve port width of the throttle valve 415 installed in the reflux tee 412b or the reflux two-way 412c connected to the first bridge tube group 411.

Alternatively, when the valve port width of the throttle valve 415 installed in the reflux tee 412b connected to the second bridge tube group 413 is the same as the valve port width of the throttle valve 415 installed in the reflux tee 412b or the reflux two-way 412c connected to the first bridge tube group 411, it is necessary to ensure that the size of the reflux tee 412b connected to the second bridge tube group 413 is larger than the size of the reflux tee 412b or the reflux two-way 412c connected to the first bridge tube group 411.

Furthermore, the second bridge tube body 413a includes a first connection part and a second connection part, the first connection part includes an inner wall surface and a clamping tooth arranged on the inner wall surface, the end of the manifold 412 connected to the first connection part is provided with a clamping groove, and the clamping tooth and the clamping groove are adapted to be clamped. The clamping and clamping groove clamping method is adopted to realize the quick plug-in assembly of the second bridge tube body 413a and the manifold 412, the connection method is simple, and the sealing and reliability are good.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims (11)

1. A liquid cooling pipe joint, characterized in that the liquid cooling pipe joint comprises: A plurality of first bridge takeover groups; A liquid manifold, one end of each of the plurality of first bridge tube groups is connected to the liquid manifold; A second bridge pipe group, one end of which is connected to the liquid collecting pipe; and A stop valve is installed in the second bridge pipe. 2. The liquid cooling pipe joint according to claim 1, characterized in that the first bridge pipe group comprises a first bridge pipe body and a first joint, one end of the first bridge pipe body is connected to the liquid manifold, and the other end of the first bridge pipe body is connected to the first joint. 3. The liquid cooling pipe joint according to claim 2, characterized in that the second bridge pipe group includes a second bridge pipe body and a second joint, one end of the second bridge pipe body is connected to the liquid manifold, and the other end of the second bridge pipe body is connected to the second joint. 4 . The liquid cooling pipe joint according to claim 3 , wherein the first joint and the second joint are quick-connect joints. 5. The liquid cooling pipe joint according to claim 1, characterized in that a plurality of the first bridge pipe groups are arranged side by side at intervals in the length direction of the manifold, and the second bridge pipe group is used to connect two adjacent manifolds; The internal flow channel of the manifold is divided into a plurality of branch flow channels, and the plurality of branch flow channels are arranged along the length direction of the manifold, and each of the branch flow channels is connected to a corresponding first bridge tube group; wherein, the closer the branch flow channel is to the second bridge tube group, the smaller the diameter, and the farther the branch flow channel is from the second bridge tube group, the larger the diameter. 6. The liquid cooling pipe joint according to claim 5 is characterized in that the second bridging pipe body includes a first connecting part and a second connecting part, the first connecting part includes an inner wall surface and a latching tooth arranged on the inner wall surface, and the end of the liquid collecting pipe connected to the first connecting part is provided with a latching groove, and the latching tooth is adapted to be latched in the latching groove. 7 . The liquid cooling pipe joint according to claim 1 , characterized in that the liquid cooling pipe joint further comprises a plurality of throttle valves, and the throttle valves are arranged in the first bridge pipe group in a one-to-one correspondence. 8. The liquid cooling pipe joint according to claim 1, characterized in that the manifold comprises a plurality of manifold sections and a plurality of reflux tees, and the three interfaces of each reflux tee are respectively sealed and connected with two adjacent manifold sections and one of the first bridge pipe groups; The liquid conduit section and the first bridge pipe group are respectively rotatable relative to the reflux tee, and the second bridge pipe group is connected to one of the liquid conduit sections. 9. The liquid cooling pipe joint according to claim 8, characterized in that the manifold further comprises two reflux two-way pipes, the two reflux two-way pipes are respectively arranged at two ends of the manifold in the length direction, and two interfaces of the reflux two-way pipes are respectively sealed and connected to one of the manifold sections and one of the first bridge pipe groups arranged adjacently; The liquid confluence pipe section and the first bridge pipe group are respectively capable of rotating relative to the two-way pipe of the reflux pump. 10. A liquid cooling pipeline device, characterized by comprising the liquid cooling pipe joint according to any one of claims 1 to 9. 11. An energy storage system, comprising: Battery module; The liquid cooling pipeline device according to claim 10; and A liquid cooling unit is connected to the battery module through the liquid cooling pipeline device to achieve thermal management of the battery module.