Liquid cooling system and energy storage system
By designing equal-length cooling channels and shared pipes in the liquid cooling system, the problem of uneven heat dissipation of the heat-generating unit was solved, achieving temperature balance and extended lifespan, and reducing system costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAMEN KEHUA DIGITAL ENERGY TECH CO LTD
- Filing Date
- 2022-05-31
- Publication Date
- 2026-05-15
AI Technical Summary
In existing liquid cooling methods, the heat dissipation efficiency of each heat-generating unit is inconsistent, resulting in a large temperature difference, which affects the lifespan of the heat-generating unit and makes maintenance difficult.
Design a liquid cooling system that ensures equal cooling channel lengths for all heat-generating units, maintains balanced coolant flow by sharing a common supply and return pipe, and connects the inlet and outlet ends of all heat-generating units using a split subsystem.
It achieves temperature balance of the heating unit, extends service life, reduces system cost, and simplifies the laying and maintenance of the piping system.
Smart Images
Figure CN114927794B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of heat dissipation technology, specifically to a liquid cooling system and an energy storage system. Background Technology
[0002] During operation, heating elements inevitably generate heat, and the temperature difference between these elements significantly impacts their lifespan. Current technologies utilize air cooling, liquid cooling, or a combination of both. However, regardless of the cooling method, the varying locations of each heating element result in inconsistent cooling efficiency, leading to significant temperature differences and poor temperature uniformity. When multiple heating elements operate simultaneously, these temperature variations can cause unequal lifespans, complicating maintenance. This is particularly true in liquid cooling systems, where the flow rate and flow resistance of the coolant differ between elements, resulting in substantial variations in flow path and cooling efficiency. Heating elements with higher flow resistance (longer pipe paths, smaller diameters) have lower flow rates and lower cooling efficiency, while those with lower flow resistance have higher flow rates and higher cooling efficiency. Summary of the Invention
[0003] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and to provide a liquid cooling system and an energy storage system, wherein the liquid flow length of each heating unit is equal, thereby making the flow rate of coolant through each heating unit consistent, thereby improving the temperature uniformity of the heating unit.
[0004] To achieve the above objectives, the following technical solution is adopted:
[0005] The first technical solution relates to a liquid cooling system for cooling several heating units having the same cooling flow channel, wherein the cooling flow channel has an inlet end and an outlet end; characterized in that the liquid cooling system includes: a coolant circulation supply device having a supply port and a return port; and a pipeline system including a supply pipe, a return pipe, and a distribution subsystem; one end of the supply pipe is connected to the supply port, and the other end is connected to the distribution subsystem at a main distribution end; one end of the return pipe is connected to the return port, and the other end is connected to the distribution subsystem at a main collection end; the distribution subsystem is used to connect the main distribution end with the inlet ends of all heating units and to connect the main collection end with the outlet ends of all heating units; in the distribution subsystem, the liquid passage length of all heating units is equal; the liquid passage length of a heating unit is equal to the sum of the pipeline distance between the inlet end of the heating unit and the main distribution end and the pipeline distance between the outlet end of the heating unit and the main collection end.
[0006] The second technical solution is based on the first technical solution, wherein the main diversion end is located on a first plane, the main liquid collection end is located on a second plane parallel to the first plane, and each heating unit is located between the first plane and the second plane; the diversion subsystem includes a first pipe connecting the liquid inlet end of all heating units to the main diversion end and a second pipe connecting the liquid outlet end of all heating units to the main liquid collection end; the first pipe consists only of a diversion pipe located on the first plane, a diversion branch pipe extending along a first direction perpendicular to the first plane, and a liquid inlet pipe, wherein the diversion pipe is connected to the main diversion end; each diversion branch pipe is connected in parallel to the diversion pipe, each liquid inlet pipe is connected in parallel to the diversion branch pipe, and the liquid inlet pipe is set corresponding to the liquid inlet end; the second pipe consists only of a liquid collection pipe located on the second plane, a liquid collection branch pipe extending along the first direction, and a liquid outlet pipe, wherein the liquid collection pipe is connected to the main liquid collection end, each liquid collection branch pipe is connected in parallel to the liquid collection pipe, each liquid outlet pipe is connected in parallel to the liquid outlet branch pipe, and the liquid outlet pipe is set corresponding to the liquid outlet end.
[0007] The third technical solution is based on the second technical solution, wherein each heating unit is arranged at least partially along a first direction and at least partially along a second direction, the second direction being parallel to the first plane and the second plane and perpendicular to the first direction; each liquid distribution branch is arranged at least partially along the second direction, and each liquid collection branch is arranged at least partially along the second direction.
[0008] The fourth technical solution is based on the third technical solution, wherein each heating unit is at least partially arranged along a third direction, the third direction being perpendicular to the first and second directions; each liquid distribution branch is at least partially arranged along a third direction; and each liquid collection branch is at least partially arranged along a third direction.
[0009] The fifth technical solution is based on the fourth technical solution, wherein the first direction is the vertical direction and the second plane is located above the first plane.
[0010] The sixth technical solution is based on the fifth technical solution, wherein the liquid supply port and the liquid return port are located on a third plane perpendicular to the first direction, and the third plane is located between the first plane and the second plane or on the same plane as the first plane.
[0011] The seventh technical solution is based on the sixth technical solution, wherein the heating unit extends along a third direction; the liquid inlet and liquid outlet of the cooling channel are located at one end of the heating unit along the third direction; each heating unit is arranged along the third direction to form two rows of heating groups, each row of heating groups is formed by multiple heating clusters arranged along a second direction, and each heating cluster is formed by multiple heating units arranged along a first direction; the liquid inlet and liquid outlet of the heating unit in each row of heating groups are opposite to the liquid inlet and liquid outlet of the heating unit in the other row of heating groups; each liquid distribution branch pipe is set one-to-one with each heating cluster; each liquid collection branch pipe is set one-to-one with each heating cluster.
[0012] The eighth technical solution is based on the seventh technical solution, wherein the coolant circulation supply device is located on one side of the pipeline system along the second direction; the main branch end and the main collection end are respectively located at both ends of the pipeline system along the second direction; the distribution pipe includes only a first section, a second section, and a third section; the first section and the third section are parallel to each other and both extend along the second direction, and each distribution branch pipe is connected in parallel to the first section and the third section; the second section extends along the third direction, and the two ends of the second section are respectively connected to the first section and the third section, and the second section and the supply pipe intersect at the main branch end; the collection pipe includes only a fourth section, a fifth section, and a sixth section; the fourth section and the sixth section are respectively located at both ends of the pipeline system along the second direction. The fifth section extends parallel to and along the second direction, with each collection branch connected in parallel to the fourth and sixth sections. The fifth section extends along the third direction, with both ends connected to the fourth and sixth sections respectively. The fifth section and the return pipe intersect at the main collection end. The return pipe includes a first connecting section extending along the second direction, a second connecting section extending along the first direction, and a third connecting section. One end of the first connecting section intersects with the fifth section at the main collection end, and the other end is connected to the top of the second connecting section. The bottom end of the second connecting section is connected to the third connecting section. The other end of the third connecting section is connected to the return port. An exhaust valve is provided on the first connecting section away from the main collection end.
[0013] The ninth technical solution is based on the eighth technical solution, wherein the liquid distribution branch and the liquid collection branch are located on both sides of the corresponding heating cluster along the second direction.
[0014] The tenth technical solution is based on the first to ninth technical solutions, and is an energy storage system that adopts the liquid cooling system described in any one of the first to ninth technical solutions.
[0015] Compared with existing technologies, the above solution has the following beneficial effects:
[0016] 1. In the first technical solution, since each heating unit has the same cooling channel, and each heating unit shares the same liquid supply pipe and the same liquid return pipe, in the distribution subsystem, the liquid flow length of all heating units is equal. That is, no matter which heating unit the liquid flows out of from the liquid supply port flows through before flowing to the liquid return port, the path length is basically the same. In practical applications, it is only necessary to set the pipe size to be the same, and the flow rate of the liquid in the cooling channel of each heating unit is basically the same. That is, the flow rate of the liquid in the cooling channel of each heating unit is relatively balanced, thereby making the temperature difference of each heating unit more balanced, extending the service life of the heating unit and reducing the system cost.
[0017] 2. In the second technical solution, the structure of the first pipeline and the second pipeline is simple and easy to implement, which facilitates the laying of the pipeline system and the setting of the heating unit. The liquid distribution branch extends along the first direction, the liquid collection branch extends along the first direction, the liquid distribution pipe is located in the first plane, and the liquid collection pipe is located in the second plane. The layout is reasonable, simple and beautiful, and it is conducive to achieving equal liquid passage length for each heating unit.
[0018] 3. In the third technical solution, each heating unit is arranged at least partially along the first direction and at least partially along the second direction, that is, each heating unit is arranged in a rectangular array at least partially; each liquid distribution branch is arranged at least partially along the second direction, and each liquid collection branch is arranged at least partially along the second direction, that is, the arrangement of the liquid distribution branch and the liquid collection branch corresponds to the arrangement of each heating unit. This structural arrangement facilitates the achievement of equal liquid passage lengths for each heating unit through the simplified design of the liquid distribution pipe and the liquid collection pipe.
[0019] 4. In the fourth technical solution, each heating unit is arranged at least partially along a third direction, that is, each heating unit is arranged in an array in a three-dimensional direction, each liquid distribution branch is arranged at least partially along a third direction, and each liquid collection branch is arranged at least partially along a third direction. That is, the arrangement of the liquid distribution branch and the liquid collection branch corresponds to the arrangement of each heating unit. At this time, by adjusting the structure of the liquid collection pipe and the liquid distribution pipe, the liquid passage length of each heating unit can be ensured to be equal.
[0020] 5. In the fifth technical solution, the first direction is vertical, and the second plane is located above the first plane, that is, the liquid distribution pipe is at the bottom and the liquid collection pipe is at the top. In practical applications, the pipe located at the top is easily affected by solar radiation and the rising hot air from the heating unit below, resulting in a higher temperature. Therefore, by adopting this technical solution, the liquid distribution pipe connected to the liquid supply port is less affected by solar radiation and the hot air from the heating unit below, thereby ensuring that the liquid cooling temperature at the inlet end flowing into the heating unit is low and ensuring heat dissipation efficiency. This structural arrangement can also ensure that the cooling channel of each heating unit is filled with liquid, thereby ensuring heat dissipation of the heating unit. In addition, the arrangement of the liquid collection pipe at the top is also conducive to the discharge of air bubbles in the pipeline.
[0021] 6. In the sixth technical solution, the liquid supply port and the liquid return port are located on the third plane, that is, the liquid supply port and the liquid return port are located on the same plane. Since the third plane is lower than the second plane, the liquid flow from the outlet end of the heating unit will inevitably return to the liquid return port due to gravity after reaching the liquid collection pipe, thereby reducing the work done by the pump.
[0022] 7. In the seventh technical solution, two rows of heating units are set up. The liquid inlet and liquid outlet of the heating unit in each row of heating units are opposite to the liquid inlet and liquid outlet of the heating unit in the other row of heating units. Each liquid distribution branch pipe is set up corresponding to each heating cluster, and each liquid collection branch pipe is set up corresponding to each heating cluster. This facilitates the connection between the liquid inlet pipe and the liquid inlet of the heating unit, as well as the connection between the liquid outlet pipe and the liquid outlet of the heating unit. When the heating unit needs maintenance, it is easy to remove the heating unit, and the liquid passage length of each heating unit is equal.
[0023] 8. In the eighth technical solution, the coolant circulation supply device is located on one side of the pipeline system along the second direction, that is, the supply port and the return port are located on the same side, which facilitates the integrated design of the coolant circulation supply device and is more conducive to transportation and maintenance in practical applications; the structure of the distribution pipe and the collection pipe is simple and beautiful, and the production process is simpler, thereby reducing costs; the structure of the return pipe is simple and clear, the production process is simple, and the cost is low. Since the collection pipe is located at the top, after each collection branch pipe is connected in parallel to the collection pipe, the air bubbles in the liquid flow of each branch will flow upward. An exhaust valve is set at the first connecting section away from the main collection end, and the air bubbles in the liquid of each branch can be discharged by setting one exhaust valve, which further reduces costs; the setting of the second connecting section ensures that the liquid enters the return port after falling back due to gravity, thereby reducing the work of the pump; in addition, the above structural design ensures that the liquid flow length of each heating unit is consistent.
[0024] 9. In the ninth technical solution, the liquid distribution branch pipe and the liquid collection branch pipe are respectively arranged on both sides of the corresponding heating cluster along the second direction, which facilitates the connection between the liquid inlet pipe and the liquid inlet end of the heating unit and the liquid outlet pipe and the liquid outlet end of the heating unit. Compared with the structure in which the liquid distribution branch pipe and the liquid collection branch pipe are located on the same side of the heating cluster, the structure of this technical solution avoids the heat flow between the liquid distribution branch pipe and the liquid collection branch pipe, and is more aesthetically pleasing.
[0025] 10. In the tenth technical solution, any one of the liquid cooling systems in the first to ninth technical solutions is adopted. The temperature difference of each heating unit is more balanced, which extends the service life of the heating unit and reduces the system cost. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments, the accompanying drawings used are briefly described below:
[0027] Figure 1 This is a perspective view of the liquid cooling system in the embodiment;
[0028] Figure 2 for Figure 1 Enlarged view of part A;
[0029] Figure 3 This is an exploded view of the piping system in the embodiment.
[0030] Explanation of key figure labels:
[0031] Liquid cooling system 100; heating unit 1; liquid inlet 11; liquid outlet 12; coolant circulation supply device 2; liquid supply port 21; liquid return port 22; liquid supply pipe 3; liquid return pipe 4; first connecting section 41; exhaust valve 411; second connecting section 42; third connecting section 43; distribution subsystem 5; main distribution end 01; main collection end 02; distribution pipe 51; first section 511; second section 512; third section 513; distribution branch pipe 52; liquid inlet pipe 53; collection pipe 54; fourth section 541; fifth section 542; sixth section 543; collection branch pipe 55; liquid outlet pipe 56; heating group 110; heating cluster 120. Detailed Implementation
[0032] Unless otherwise specified, the terms “first,” “second,” or “third,” etc., in the claims and description are used to distinguish different objects and not to describe a particular order.
[0033] Unless otherwise specified, in the claims and description, the terms “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “clockwise,” “counterclockwise,” etc., indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only for the purpose of simplifying the description, and do not imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation.
[0034] Unless otherwise specified in the claims and description, the terms "fixed connection" or "fixed connection" shall be interpreted broadly to mean any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection by other means or components.
[0035] Unless otherwise specified, the terms “comprising,” “having,” and variations thereof in the claims and description shall mean “including but not limited to.”
[0036] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings.
[0037] See Figure 1-3 , Figure 1-3 The liquid cooling system 100 of this embodiment is shown for cooling several heating units 1 having the same cooling channel. The cooling channel is provided with a liquid inlet 11 and a liquid outlet 12. The liquid cooling system 100 includes a coolant circulation supply device 2 and a pipeline system.
[0038] The coolant circulation supply device 2 is provided with a supply port 21 and a return port 22; the piping system includes a supply pipe 3, a return pipe 4 and a distribution subsystem 5; one end of the supply pipe 3 is connected to the supply port 21, and the other end is connected to the distribution subsystem 5 at the main distribution end 01; one end of the return pipe 4 is connected to the return port 22, and the other end is connected to the distribution subsystem 5 at the main collection end 02; the distribution subsystem 5 is used to connect the main distribution end 01 with the inlet end 11 of all heating units 1 and to connect the main collection end 02 with the outlet end 12 of all heating units 1; in the distribution subsystem 5, the liquid passage length of all heating units 1 is equal; the liquid passage length of heating unit 1 is equal to the sum of the pipe distance between the inlet end 11 of the heating unit 1 and the main distribution end 01 and the pipe distance between the outlet end 12 of the heating unit 1 and the main collection end 02.
[0039] Specifically, each heating unit 1 is arranged at least partially along the first direction, at least partially along the second direction, and at least partially along the third direction, that is, the heating units 1 are arranged in a three-dimensional array, wherein the first direction, the second direction, and the third direction are orthogonal. Figure 1 and Figure 3 In the diagram, the first direction is vertical, the second direction is horizontal, and the third direction is front-to-back. In specific implementation, each heating unit 1 extends along the third direction, and its cooling channel's inlet end 11 and outlet end 12 are located at one end of the heating unit 1 along the third direction; that is, the cooling channel's inlet end 11 and outlet end 12 are located at the front or rear end of the heating unit 1. (See [reference needed]). Figure 2 The inlet end 11 and outlet end 12 of the cooling channel are located in the middle of the heating unit 1.
[0040] See Figure 1 Each heating unit 1 is arranged along a third direction to form two rows of heating groups 110. Each row of heating groups 110 is formed by multiple heating clusters 120 arranged along a second direction, and each heating cluster 120 is formed by multiple heating units 1 arranged along a first direction. The liquid inlet 11 and liquid outlet 12 of the heating unit 1 in each row of heating groups 110 are opposite to the liquid inlet 11 and liquid outlet 12 of the heating unit 1 in the other row of heating groups 110. In practical applications, each heating unit 1 can be installed in a rack or cabinet. The rack or cabinet has multiple installation channels arranged vertically, and the heating unit 1 is correspondingly installed in the installation channels. The piping system is laid on the rack or cabinet. In this embodiment, the heating unit 1 is a battery module with a liquid cooling plate, and the cooling channel is set in the liquid cooling plate. However, it should be understood that the heating unit can also be other electrical modules.
[0041] See Figure 3 The coolant circulation supply device 2 is equipped with a supply port 21 and a return port 22. In specific implementation, the coolant circulation supply device 2 is located on one side of the pipeline system along the second direction. Figure 3In this embodiment, the coolant circulation supply device 2 is located on the right side of the piping system. The supply port 21 and return port 22 are located on a third plane parallel to the horizontal plane. The design of the supply port 21 and return port 22 being on the same side facilitates the integrated design of the coolant circulation supply device 2 and is more conducive to transportation and maintenance in practical applications. In this embodiment, the coolant circulation supply device 2 is generally equipped with a driving device such as a circulation pump to drive the flow of coolant. This part is prior art and will not be described in detail in this embodiment.
[0042] In specific implementation, the main shunt end 01 is located on the first plane, the main liquid collection end 02 is located on the second plane parallel to the first plane, and each heating unit 1 is located between the first plane and the second plane. The first plane and the second plane are both perpendicular to the first direction, that is, the first plane and the second plane are both horizontal planes. In this embodiment, the second plane is parallel to the first plane and above the first plane, and the third plane is located between the first plane and the second plane. However, it should be understood that the third plane can also be located on the first plane.
[0043] In specific implementation, the diversion subsystem 5 also includes a first pipe connecting the liquid inlet 11 of all heating units 1 to the total diversion end 01 and a second pipe connecting the liquid outlet 12 of all heating units 1 to the total collection end 02.
[0044] Specifically, the first pipeline consists only of a liquid distribution pipe 51 located on the first plane (that is, the liquid distribution pipe 51 is located at the bottom), a liquid distribution branch pipe 52 extending along the first direction, and an inlet pipe 53. The liquid distribution pipe 51 is connected to the main diversion end 01; each liquid distribution branch pipe 52 is connected in parallel to the liquid distribution pipe 51, and each inlet pipe 53 is connected in parallel to the liquid distribution branch pipe 52. The inlet pipe 53 is provided corresponding to the inlet end 11.
[0045] In this embodiment, the liquid distribution pipe 51 includes only a first segment 511, a second segment 512, and a third segment 513; the first segment 511 and the third segment 513 are parallel to each other and both extend along the second direction, and each liquid distribution branch pipe 52 is connected in parallel to the first segment 511 and the third segment 513; the second segment 512 extends along the third direction, and the two ends of the second segment 512 are respectively connected to the first segment 511 and the third segment 513, and the middle part of the second segment 512 intersects with the liquid supply pipe 3 at the main diversion end 01; the structure of the liquid distribution pipe 51 is simple and beautiful, and the production process is simpler, thereby reducing costs.
[0046] Each liquid distribution branch pipe 52 is arranged at least partially along the second direction, and each liquid distribution pipe is also arranged at least partially along the third direction. Each liquid distribution branch pipe 52 is arranged one-to-one with each heating cluster 120, that is, the arrangement of each liquid distribution branch pipe 52 corresponds to the arrangement of each heating unit 1. In this embodiment, each liquid distribution branch pipe 52 forms two rows, one row is arranged at the front end of the front row heating group 110, and the other row is arranged at the rear end of the rear row heating group 110.
[0047] In this embodiment, the lengths of each inlet pipe 53 are equal.
[0048] The second pipeline consists only of a liquid collecting pipe 54 located on the second plane (that is, the liquid collecting pipe 54 is located at the top), a liquid collecting branch pipe 55 extending along the first direction, and a liquid outlet pipe 56. The liquid collecting pipe 54 is connected to the main liquid collecting end 02, each liquid collecting branch pipe 55 is connected in parallel to the liquid collecting pipe 54, and each liquid outlet pipe 56 is connected in parallel to the liquid outlet branch pipe. The liquid outlet pipe 56 is provided corresponding to the liquid outlet end 12.
[0049] Specifically, the liquid collecting pipe 54 includes only the fourth section 541, the fifth section 542, and the sixth section 543; the fourth section 541 and the sixth section 543 are parallel to each other and both extend along the second direction, and each liquid collecting branch pipe 55 is connected in parallel to the fourth section 541 and the sixth section 543; the fifth section 542 extends along the third direction, and its two ends are connected to the fourth section 541 and the sixth section 543 respectively, and the middle part of the fifth section 542 intersects with the return pipe 4 at the main liquid collecting end 02; the structure of the liquid collecting pipe 54 is simple and beautiful, and the manufacturing process is simpler, thereby reducing costs; in practical applications, the pipe located at the top is easily affected by solar radiation and the rising heat from the heating unit 1 below. Therefore, the temperature is relatively high. Thus, a structure design with the liquid distribution pipe 51 at the bottom and the liquid collection pipe 54 at the top is adopted. The liquid distribution pipe 51, which is connected to the liquid supply port 21, is less affected by solar radiation and the hot air from the heating unit 1 below, thereby ensuring that the liquid cooling temperature at the liquid inlet 11 flowing into the heating unit 1 is low and ensuring heat dissipation efficiency. This structural arrangement also ensures that the cooling channel of each heating unit 1 is filled with liquid, thereby ensuring heat dissipation for the heating unit 1. Since the liquid collection pipe 54 is located at the top, after each liquid collection branch pipe 55 is connected in parallel to the liquid collection pipe 54, the air bubbles in the liquid flow of each branch will flow upward. The arrangement of the liquid collection pipe 54 at the top also helps to discharge air bubbles in the pipeline.
[0050] Each liquid collecting branch pipe 55 is arranged at least partially along the second direction, and each liquid collecting pipe is also arranged at least partially along the third direction. Each liquid collecting branch pipe 55 is arranged one-to-one with each heating cluster 120, that is, the arrangement of each liquid collecting branch pipe 55 corresponds to the arrangement of each heating unit 1. In this embodiment, the liquid collecting branch pipe 52 forms two rows, one row is arranged at the front end of the front row heating group 110, and the other row is arranged at the rear end of the rear row heating group 110.
[0051] In this embodiment, the lengths of each outlet tube 56 are equal.
[0052] In this embodiment, the main liquid distribution end and the main liquid collection end 02 are located at the two ends of the pipeline system along the second direction.
[0053] In specific implementation, the return pipe 4 includes a first connecting section 41 extending in the second direction, a second connecting section 42 extending in the first direction, and a third connecting section 43. One end of the first connecting section 41 intersects with the middle of the fifth section 542 at the total liquid collection end 02, and the other end is connected to the top of the second connecting section 42. The bottom end of the second connecting section 42 is connected to the third connecting section 43. The other end of the third connecting section 43 is connected to the return port 22. An exhaust valve 411 is provided on the first connecting section 41 away from the total liquid collection end 02. The structure of the return pipe 4 is simple and clear, the production process is simple, and the cost is low. The exhaust valve 411 is provided on the first connecting section 41 away from the total liquid collection end 02. The air bubbles of the liquid in each branch can be discharged by setting one exhaust valve 411, which is even more cost-effective. The setting of the second connecting section 42 ensures that the liquid enters the return port 22 after falling back due to gravity, thereby reducing the work done by the pump.
[0054] In this embodiment, the liquid distribution branch pipe 52 and the liquid collection branch pipe 55 are located on both sides of the corresponding heating cluster 120 along the second direction. This arrangement facilitates the connection between the liquid inlet pipe 53 and the liquid inlet end 11 of the heating unit 1, as well as the connection between the liquid outlet pipe 56 and the liquid outlet end 12 of the heating unit 1. Moreover, the structure in which the liquid distribution branch pipe 52 and the liquid collection branch pipe 55 are located on the same side of the heating cluster 120 avoids heat flow between the liquid distribution branch pipe 52 and the liquid collection branch pipe 55, and is also more aesthetically pleasing.
[0055] It should be understood that in practical applications, the specifications and quantities of elbows, tees, valves, etc., in the piping system are consistent, and the dimensions of the pipes are consistent.
[0056] In practice, the coolant circulation supply device 2 provides coolant flow from the supply port 21, which flows through the supply pipe 3 and is then divided at the main branch end 01. Part of the coolant flows through the second section 512 of the branch pipe 51 and reaches the first section 511 of the branch pipe 51, while another part flows through the second section 512 of the branch pipe 51 and reaches the third section 513 of the branch pipe 51. The coolant that reaches the first section 511 flows upward into the branch pipe 52, through the inlet pipe 53, into the cooling channel, and then through the outlet pipe 56 into the collecting branch pipe 55. It then flows upward into the fourth section 541 or the sixth section 543 of the collecting pipe 54, and then through the fifth section 542 to reach the main collecting end 02. Subsequently, the coolant flows into the first connecting section 41 of the return pipe 4, through the exhaust valve 411, and reaches the second connecting section 42. Due to gravity, it flows from the second connecting section 42 to the bottom third connecting section 43, and finally returns to the coolant circulation supply device 2 through the return port 22. This process is repeated continuously.
[0057] As can be seen, by adopting this technical solution, since each heating unit 1 has the same cooling channel, and each heating unit 1 shares the same liquid supply pipe 3 and the same liquid return pipe 4, in the distribution subsystem 5, the liquid flow length of all heating units 1 is equal. That is, no matter which heating unit 1 the liquid flows out from the liquid supply port 21 flows out through before flowing to the liquid return port 22, the path length is not much different. In practical applications, as long as the pipe size is set to be consistent, the flow rate of the liquid in the cooling channel of each heating unit 1 is basically consistent, that is, the flow rate of the liquid in the cooling channel of each heating unit 1 is relatively balanced, thereby making the temperature difference of each heating unit 1 more balanced, extending the service life of the heating unit 1 and reducing the system cost. The structure of the first and second pipes is simple and easy to implement, which facilitates the laying of the pipeline system and the setting of the heating unit 1. The liquid distribution branch pipe 52 extends along the first direction, the liquid collection branch pipe 55 extends along the first direction, the liquid distribution pipe 51 is located in the first plane, and the liquid collection pipe 54 is located in the second plane. The layout is reasonable, simple and beautiful, and it is also convenient to ensure that the liquid passage length of each heating unit 1 is equal by adjusting the structure of the liquid collection pipe 54 and the liquid distribution pipe 51, thereby achieving equal liquid passage length of each heating unit 1.
[0058] In this embodiment, the corresponding arrangement of the heating unit 1 and the pipeline system facilitates the connection between the liquid inlet pipe 53 and the liquid inlet end 11 of the heating unit 1, and the connection between the liquid outlet pipe 56 and the liquid outlet end 12 of the heating unit 1. When the heating unit 1 needs maintenance, it is easy to remove the heating unit 1, and the liquid passage length of each heating unit 1 is equal.
[0059] The present invention also provides an energy storage system (not shown in the figure), which adopts the liquid cooling system 100 in the above embodiment. It can be seen that the temperature difference of each heating unit 1 in the energy storage system is relatively uniform, which extends the service life of the heating unit 1 and reduces the system cost.
[0060] The description of the above specification and embodiments is used to explain the scope of protection of this application, but does not constitute a limitation on the scope of protection of this application.
Claims
1. A liquid cooling system (100) for cooling a plurality of heat-generating units (1) having identical cooling channels, wherein the cooling channels are provided with a liquid inlet (11) and a liquid outlet (12); characterized in that, The liquid cooling system (100) includes: A coolant circulation supply device (2) is provided with a supply port (21) and a return port (22); and The piping system includes a supply pipe (3), a return pipe (4), and a distribution subsystem (5); one end of the supply pipe (3) is connected to the supply port (21), and the other end is connected to the distribution subsystem (5) at the main distribution end (01); one end of the return pipe (4) is connected to the return port (22), and the other end is connected to the distribution subsystem (5) at the main collection end (02); the distribution subsystem (5) is used to connect the main distribution end (01) with all heating units (1). The inlet end (11) is used to connect the total liquid collection end (02) with the outlet end (12) of all heating units (1); in the diversion subsystem (5), the liquid passage length of all heating units (1) is equal; the liquid passage length of the heating unit (1) is equal to the sum of the pipe distance between the inlet end (11) of the heating unit (1) and the total diversion end (01) and the pipe distance between the outlet end (12) of the heating unit (1) and the total liquid collection end (02); The main branch end (01) is located on a first plane, the main liquid collection end (02) is located on a second plane parallel to the first plane, and each heating unit (1) is located between the first plane and the second plane; the main branch end (01) and the main liquid collection end (02) are respectively located at both ends of the pipeline system along a second direction; the second direction is parallel to the first plane and the second plane and perpendicular to the first direction; The diversion subsystem (5) includes a liquid distribution pipe (51) located on a first plane and a liquid collection pipe (54) located on a second plane; the second plane is located above the first plane; The diversion subsystem (5) includes a first pipe connecting the inlet end (11) of all heating units (1) to the total diversion end (01) and a second pipe connecting the outlet end (12) of all heating units (1) to the total collection end (02); The first pipeline consists only of a liquid distribution pipe (51) located on the first plane, a liquid distribution branch pipe (52) extending in a first direction perpendicular to the first plane, and an inlet pipe (53); The second pipe consists only of a liquid collecting pipe (54) located on the second plane, a liquid collecting branch pipe (55) extending along the first direction, and a liquid outlet pipe (56).
2. The liquid cooling system (100) as described in claim 1, characterized in that, The liquid distribution pipe (51) is connected to the main distribution end (01); each liquid distribution branch pipe (52) is connected in parallel to the liquid distribution pipe (51), each liquid inlet pipe (53) is connected in parallel to the liquid distribution branch pipe (52), and the liquid inlet pipe (53) is set corresponding to the liquid inlet end (11); The liquid collection pipe (54) is connected to the main liquid collection end (02), each liquid collection branch pipe (55) is connected in parallel to the liquid collection pipe (54), each liquid outlet pipe (56) is connected in parallel to the liquid outlet branch pipe, and the liquid outlet pipe (56) is set in relation to the liquid outlet end (12).
3. The liquid cooling system (100) as described in claim 2, characterized in that, Each heating unit (1) is arranged at least partially along the first direction and at least partially along the second direction; each liquid distribution branch (52) is arranged at least partially along the second direction, and each liquid collection branch (55) is arranged at least partially along the second direction.
4. The liquid cooling system (100) as described in claim 3, characterized in that, Each heating unit (1) is also arranged at least partially along a third direction, which is perpendicular to the first direction and the second direction; each liquid distribution branch (52) is also arranged at least partially along a third direction; each liquid collection branch (55) is also arranged at least partially along a third direction.
5. The liquid cooling system (100) as described in claim 4, characterized in that, The first direction is the vertical direction.
6. The liquid cooling system (100) as described in claim 5, characterized in that, The liquid supply port (21) and the liquid return port (22) are located on a third plane perpendicular to the first direction. The third plane is located between the first plane and the second plane or on the same plane as the first plane.
7. A liquid cooling system (100) as described in claim 6, characterized in that, The heating unit (1) extends along a third direction; the liquid inlet (11) and liquid outlet (12) of the cooling channel are located at one end of the heating unit (1) along a third direction; each heating unit (1) is arranged along a third direction to form two rows of heating groups (110), each row of heating groups (110) is formed by multiple heating clusters (120) arranged along a second direction, and each heating cluster (120) is formed by multiple heating units (1) arranged along a first direction; the liquid inlet (11) and liquid outlet (12) of the heating unit (1) in each row of heating groups (110) are opposite to the liquid inlet (11) and liquid outlet (12) of the heating unit (1) in another row of heating groups (110); each liquid distribution branch pipe (52) is set one-to-one with each heating cluster (120); each liquid collection branch pipe (55) is set one-to-one with each heating cluster (120).
8. A liquid cooling system (100) as described in claim 7, characterized in that, The coolant circulation supply device (2) is located on one side of the pipeline system along the second direction; The liquid distribution pipe (51) includes only a first section (511), a second section (512), and a third section (513); the first section (511) and the third section (513) are parallel to each other and both extend along the second direction, and each liquid distribution branch pipe (52) is connected in parallel to the first section (511) and the third section (513); the second section (512) extends along the third direction, and the two ends of the second section (512) are respectively connected to the first section (511) and the third section (513), and the second section (512) and the liquid supply pipe (3) intersect at the main branch end (01); The liquid collection pipe (54) includes only a fourth section (541), a fifth section (542), and a sixth section (543); the fourth section (541) and the sixth section (543) are parallel to each other and both extend along the second direction, and each liquid collection branch pipe (55) is connected in parallel to the fourth section (541) and the sixth section (543); the fifth section (542) extends along the third direction, and the two ends of the fifth section (542) are respectively connected to the fourth section (541) and the sixth section (543), and the fifth section (542) and the return pipe (4) intersect at the main liquid collection end (02); The return pipe (4) includes a first connecting section (41) extending in a second direction, a second connecting section (42) extending in a first direction, and a third connecting section (43); one end of the first connecting section (41) intersects with the fifth section (542) at the total liquid collection end (02), and the other end is connected to the top end of the second connecting section (42); the bottom end of the second connecting section (42) is connected to the third connecting section (43); the other end of the third connecting section (43) is connected to the return port (22); the first connecting section (41) is provided with an exhaust valve (411) away from the total liquid collection end (02).
9. A liquid cooling system (100) as described in claim 8, characterized in that, The liquid distribution branch (52) and the liquid collection branch (55) are located on both sides of the corresponding heating cluster (120) along the second direction.
10. An energy storage system, characterized in that, It employs a liquid cooling system (100) as described in any one of claims 1-9.