Energy storage liquid cooling plate

Abstract

The utility model relates to a kind of liquid cooling plate equipment technical field, specifically relates to a kind of energy storage liquid cooling plate.A kind of energy storage liquid cooling plate, including two plate bodies of relative arrangement, two plate bodies are formed with the flow channel for cooling liquid to pass between, the liquid inlet and liquid outlet are located plate body same end, at least two flow channels are provided on the plate body side by side, the flow channel includes side by side first flow channel section, second flow channel section, third flow channel section and fourth flow channel section, one end of third flow channel section and one end of fourth flow channel section are connection end to be used for liquid inlet or liquid outlet, the other end of third flow channel section is connected with one end of second flow channel section, the other end of second flow channel section is connected with one end of first flow channel section, the other end of first flow channel section is connected with the other end of fourth flow channel section.The utility model has no local turbulence, vortex and speed mutation, cooling is more uniform, flow resistance drops, required pump lift reduces, system power consumption and operating cost synchronous drop.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid cooling plate equipment, specifically to an energy storage liquid cooling plate. Background Technology

[0002] Chinese patent application number 201920024327.0 discloses two types of liquid cooling plates. The conventional type has a coolant inlet and a coolant outlet at each end. The coolant inlet splits into two channels, which move along the length of the liquid cooling plate to the other side, then merge again, and then split into two channels extending along the length of the liquid cooling plate to the other side, repeating this process to ensure the flow of coolant traverses the entire liquid cooling plate. The improved liquid cooling plate has a coolant inlet and a coolant outlet at each end. The coolant inlet connects to two channels, both of which are located on the liquid cooling plate and are distributed in an S-shape towards the long sides of the liquid cooling plate. The two bends in the S-shape divide the channel into three segments.

[0003] The above scheme has the following defects: (1) There are local merging and splitting situations, which require high design and processing technology at the merging and splitting points; each merging and branching will cause local turbulence, eddies and sudden velocity changes, increase flow resistance, and result in a large overall pressure drop, which will lead to uneven cooling. It is necessary to use a pump with a higher head, which will increase the system power consumption and cost. It will also lead to greater noise and shorter service life at the pipes or joints connected to the liquid cooling plate; (2) The coolant inlets are located at both ends of the liquid cooling plate, and the pipes connected to the liquid cooling plate are more complicated. Utility Model Content

[0004] The purpose of this invention is to provide an energy storage liquid cooling plate that has better cooling effect and lower usage and production costs.

[0005] To achieve the above objectives, this utility model employs an energy storage liquid cooling plate, comprising two plates arranged opposite each other, with a flow channel between the two plates for coolant to pass through. Each plate has an inlet and an outlet communicating with the flow channel, both located at the same end of the plate. At least two flow channels are arranged side-by-side on the plate, each flow channel comprising a first, second, third, and fourth flow channel segment arranged side-by-side. The third flow channel segment is located between the fourth and second flow channel segments, and the second flow channel segment is located between the first and third flow channel segments. One end of the third flow channel segment and one end of the fourth flow channel segment are connecting ends for inlet or outlet of coolant. The other end of the third flow channel segment is connected to one end of the second flow channel segment via a transition section, and the other end of the second flow channel segment is connected to one end of the first flow channel segment via a transition section. The other end of the first flow channel segment is connected to the other end of the fourth flow channel segment via a transition section.

[0006] This invention employs at least two independent flow channels arranged side-by-side (such as the first to fourth flow channel sections). Each flow channel is a single, continuous path. After the coolant enters from the inlet, it does not need to merge or branch with other flow channels; instead, it directly connects the various sections through a transition section, completely eliminating local merging / splitting, avoiding turbulence and eddies, significantly reducing flow resistance and pressure drop, reducing pump head requirements, lowering power consumption and cost, and providing more uniform cooling. This also results in less noise and a longer service life at the pipes or joints connecting the inlet and outlet. The flow channel sections are connected end-to-end through the transition section to form an S-shaped path, allowing the coolant to unidirectionally return and cover the entire plate. Without the chaotic flow of alternating merging and splitting, this design results in a more uniform flow velocity distribution, avoiding localized overheating and improving cooling consistency.

[0007] The liquid inlet and outlet of this invention are located at the same end of the plate, and the external pipeline only needs to be connected to the two interfaces at the same end, which reduces the pipeline length and the number of bends, reduces the installation complexity and leakage risk, and is especially suitable for space-constrained scenarios such as energy storage systems.

[0008] This invention solves the problems of large pressure drop, uneven cooling, and complex piping of traditional liquid cooling plates, balancing performance and cost, and is suitable for large-scale energy storage applications.

[0009] Preferably, the ends of the third flow channel sections of the plurality of flow channels are connected by the same connecting section, the liquid inlet is connected to the connecting section through a first liquid inlet section, and the liquid inlet is connected to a third flow channel section through a second liquid inlet section, wherein the path of the second liquid inlet section is non-linear.

[0010] The third flow channel in a multi-channel system receives coolant through a shared connecting section. This shared connecting section first slows down the coolant before it enters the second inlet section and the deflection section, preventing the high-speed jet from directly impacting the channel sidewalls and reducing noise. If each flow channel had its own opening, each opening would require sealing welds or compression tightening with external fittings, resulting in a long cumulative tolerance chain and making it prone to issues with external pipes or connectors not fitting. The second inlet section is intentionally designed with a curved or zigzag shape, serving to limit flow and reduce turbulence.

[0011] Preferably, the connecting section has a protrusion extending towards the opening side of the third flow channel section at the middle of the connecting section. By providing the protrusion, the flow rate of the coolant is reduced, and the flow rate is balanced.

[0012] Preferably, the plate includes a first plate with a flow channel and a second plate for covering the flow channel. The second plate has multiple through-holes, the number of which is the same as the number of flow channels, and the multiple through-holes are arranged side by side at intervals. The first plate has a liquid outlet and a liquid outlet flow channel section. The second plate has a mating hole corresponding to the liquid outlet flow channel section. The second plate has a fixing block with a mating groove for connecting all through-holes, all mating holes, and the liquid outlet flow channel section.

[0013] The above configuration achieves integrated coolant discharge. The fourth flow channel section flows into the mating groove of the fixed block through the through-hole of the second plate, and then discharges uniformly through the outlet flow channel section. This eliminates the need for multiple outlet pipes and connectors, as the coolant is collected through the mating groove of the fixed block, reducing coolant sloshing at the outlet pipes, minimizing vibration, and extending the service life of the outlet pipes. Simultaneously, it simplifies the machining and design of the flow channel sections on the plate. Preferably, the number of liquid outlet flow channels is at least two, and at least one of the liquid outlet flow channels has a non-linear path. By making the path of one of the liquid outlet flow channels non-linear, the coolant flowing out of the mating tank is prevented from directly impacting the connector or outlet pipe of the liquid outlet.

[0014] Preferably, the plate body includes a first plate body and a second plate body along its width direction. The third flow channel section on the first plate body is closer to the centerline of the plate body parallel to its length direction than the fourth flow channel section, and the third flow channel section on the second plate body is closer to the centerline of the plate body parallel to its length direction than the fourth flow channel section. This arrangement brings the liquid inlet of each flow channel closer together and balances the flow rate distribution.

[0015] Preferably, the transition sections between the third and second flow channel sections, as well as between the first and second flow channel sections, are all arc-shaped. The transition section between the first and fourth flow channel sections includes both an arc-shaped portion and a straight section. The arc transition reduces turbulence, and the straight section in the transition section between the first and fourth flow channel sections is more suitable for the edge space of the plate.

[0016] This invention features a flow channel with no merging or splitting, with each channel being a single, continuous path. The coolant only makes a reversal in the transition section, eliminating local turbulence, eddies, and sudden velocity changes, resulting in more uniform cooling, reduced flow resistance, lower required pump head, and simultaneous reduction in system power consumption and operating costs. It also has less impact on the inlet and outlet pipes and connectors. Furthermore, since the inlet and outlet are located at the same end, this invention's cooling system requires fewer external pipes, produces less noise, and has a longer service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of a structure of the present invention with the battery part, the second plate and the fixing block removed.

[0019] Figure 3 This is a schematic diagram of a structure of the present invention with the battery part and fixing block removed.

[0020] Figure 4 This is a schematic diagram of the structure of the first plate of this utility model. Detailed Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0022] Depend on Figure 1 and Figure 2 As shown, this embodiment discloses an energy storage liquid cooling plate for cooling the battery section 100. It includes two plates arranged opposite to each other. The plates include a first plate 1 with a flow channel and a second plate 2 for covering the flow channel 10. The liquid inlet and liquid outlet communicating with the flow channel 10 are both located at the front end of the plate. The liquid inlet and liquid outlet are respectively provided with a liquid inlet connector 101 and a liquid outlet connector 102.

[0023] Depend on Figure 2 and Figure 4 As shown, four independent flow channels are arranged side by side on the first plate 1. Each flow channel includes a first flow channel section 11, a second flow channel section 12, a third flow channel section 13, and a fourth flow channel section 14 arranged side by side. The third flow channel section 13 is located between the fourth flow channel section 14 and the second flow channel section 12. The second flow channel section 12 is located between the first flow channel section 11 and the third flow channel section 13. One end of the third flow channel section 13 and one end of the fourth flow channel section 14 are both connecting ends for liquid inlet or outlet. The other end of the third flow channel section 13 is connected to one end of the second flow channel section 12 through an arc-shaped transition section. The other end of the second flow channel section 12 is connected to one end of the first flow channel section 11 through an arc-shaped transition section. The other end of the first flow channel section 11 is connected to the other end of the fourth flow channel section 14 through a transition section with an arc-shaped portion and a straight portion.

[0024] The first plate 1 includes a plate part located on the left and a plate part located on the right along the width direction. The third flow channel section 13 on the plate part is closer to the center line of the plate parallel to the length direction than the fourth flow channel section 14. The third flow channel section 13 on the plate part is closer to the center line L of the plate parallel to the length direction than the fourth flow channel section 14.

[0025] In this embodiment, there are four flow channels. The flow channels on the left and right sides of the first part of the plate body each include a first flow channel segment 11, a second flow channel segment 12, a third flow channel segment 13, and a fourth flow channel segment 14 arranged side by side from left to right. The flow channels on the left and right sides of the second part of the plate body each include a fourth flow channel segment 14, a third flow channel segment 13, a second flow channel segment 12, and a first flow channel segment 11 arranged side by side from left to right. In this embodiment, the front end of the third flow channel segment of the leftmost flow channel is a connecting end for liquid outlet, and the front end of the fourth flow channel segment of the leftmost flow channel is a connecting end for liquid inlet. The front ends of the other three flow channels are connecting ends for liquid inlet, and the front end of the fourth flow channel segment is a connecting end for liquid outlet. That is, the coolant in the leftmost flow channel flows from the front end of the fourth flow channel segment to the front end of the third flow channel segment, and the coolant in the other three flow channels flows from the front end of the third flow channel segment to the front end of the fourth flow channel segment.

[0026] Depend on Figure 4 As shown, the rear end of the third flow channel section 13 is connected to the rear end of the second flow channel section 12 through an arc-shaped transition section, the front end of the second flow channel section 12 is connected to the front end of the first flow channel section 11 through an arc-shaped transition section, and the rear end of the first flow channel section 11 is connected to the rear end of the fourth flow channel section 14 through a transition section having an arc-shaped portion and a straight section portion.

[0027] Depend on Figure 2 and Figure 4 As shown, the front end of the fourth flow channel section on the far left is connected to the front ends of the third flow channel sections of the other three flow channels through the same connecting section 20. The liquid inlet connector 101 is connected to the connecting section 20 through the first liquid inlet section 21. The liquid inlet connector 101 is connected to the third flow channel section on the far right through the second liquid inlet section 22. The path of the second liquid inlet section 22 is not straight. The connecting section 20 has a protrusion 29 extending towards the opening side of the third flow channel section at the third flow channel section located in the middle of the connecting section 20.

[0028] Depend on Figure 3 As shown, the second plate 2 has four through ports 201. The leftmost through port 201 corresponds to the front end of the third flow channel section of the leftmost flow channel, and the other three through ports 201 correspond to the front ends of the fourth flow channel sections of the other three flow channels. The four through ports are arranged side by side at intervals. The first plate 1 has a liquid outlet and two liquid outlet flow channel sections 15. The front ends of the liquid outlet flow channel sections are connected to the liquid outlet. The second plate 2 has a mating hole 202 at the rear end of the liquid outlet flow channel section 15. The second plate 2 has a fixing block 3 with a downward-opening mating groove. The mating groove is used to connect all through ports 201 and all mating holes 202 to the liquid outlet flow channel sections. The paths of the two liquid outlet flow channel sections 15 are not straight. The leftmost third flow channel section is located between the rear ends of the two liquid outlet flow channel sections 15.

[0029] Each flow channel is a single continuous path, with the coolant only turning back in the transition section, without local turbulence, eddies, or sudden velocity changes; the transition between the third and second flow channel sections, and between the first and second flow channel sections, adopts an arc shape, which effectively reduces flow resistance and turbulence, and improves cooling uniformity.

[0030] The flow channel layout of the first and second sections of the plate is almost symmetrical, which can shorten the liquid inlet path, balance the flow of each flow channel, and avoid short circuits or dead zones; all liquid inlets are concentrated at the front end, reducing the difference in coolant path and improving flow consistency.

[0031] Optimized flow channel design (no splitting, rounded transition, short path) reduces pump head requirements and system power consumption; smooth flow reduces fluid impact and vibration, significantly lowering noise; only two joints are required, minimizing the impact on pipelines, reducing fatigue damage, and extending system life; both inlet and outlet joints are located at the front end of the plate, greatly reducing external pipelines, requiring less installation space, and making maintenance more convenient; the mating groove of the fixing block connects all outlet paths uniformly, avoiding multiple pipelines being scattered, resulting in a more compact structure and lower leakage risk.

[0032] This embodiment has the advantages of uniform cooling, low power consumption, low noise, long lifespan, and convenient maintenance.

Claims

1. An energy storage liquid cooling plate, comprising two plates arranged opposite each other, with a flow channel for coolant to pass through between the two plates, and an inlet and an outlet communicating with the flow channel on the plates, characterized in that: The inlet and outlet are both located at the same end of the plate. At least two flow channels are arranged side by side on the plate. The flow channels include a first flow channel section, a second flow channel section, a third flow channel section, and a fourth flow channel section arranged side by side. The third flow channel section is located between the fourth flow channel section and the second flow channel section. The second flow channel section is located between the first flow channel section and the third flow channel section. One end of the third flow channel section and one end of the fourth flow channel section are connected for inlet or outlet of liquid. The other end of the third flow channel section is connected to one end of the second flow channel section through a transition section. The other end of the second flow channel section is connected to one end of the first flow channel section through a transition section. The other end of the first flow channel section is connected to the other end of the fourth flow channel section through a transition section.

2. The energy storage liquid cooling plate according to claim 1, characterized in that: The ends of the third flow channel sections of the multiple flow channels are connected by the same connecting section. The liquid inlet is connected to the connecting section through the first liquid inlet section. The liquid inlet is connected to a third flow channel section through the second liquid inlet section. The path of the second liquid inlet section is non-linear.

3. The energy storage liquid cooling plate according to claim 2, characterized in that: The connecting section has a protrusion extending toward the opening side of the third flow channel section at the middle of the connecting section.

4. The energy storage liquid cooling plate according to claim 1, characterized in that: The plate includes a first plate with flow channels and a second plate for covering the flow channels. The second plate has multiple through-holes, the number of which is the same as the number of flow channels, and the multiple through-holes are arranged side by side at intervals. The first plate has a liquid outlet and a liquid outlet flow channel section. The second plate has a mating hole corresponding to the liquid outlet flow channel section. The second plate has a fixing block with a mating groove for connecting all through-holes, all mating holes, and the liquid outlet flow channel section.

5. The energy storage liquid cooling plate according to claim 4, characterized in that: The number of liquid outlet flow channels is at least two, and at least one of the liquid outlet flow channels has a non-linear path.

6. The energy storage liquid cooling plate according to claim 1, characterized in that: The plate body includes a plate body part and a plate body part along the width direction. The third flow channel section on the plate body part is closer to the center line of the plate body parallel to the length direction than the fourth flow channel section. The third flow channel section on the plate body part is closer to the center line of the plate body parallel to the length direction than the fourth flow channel section.

7. The energy storage liquid cooling plate according to claim 1, characterized in that: The transition sections between the third and second flow channels and between the first and second flow channels are both arc-shaped. The transition section between the first and fourth flow channels includes an arc-shaped portion and a straight section.

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