Pulsating flow type enhanced heat transfer liquid cooling system

Abstract

The utility model discloses a pulsating flow type enhanced heat transfer liquid cooling system, which comprises a liquid cooling plate made of a profile plate, and a plurality of convex blocks transversely arranged in the liquid cooling plate, so that a plurality of flow channels for cooling liquid to be communicated with one another are arranged in the liquid cooling plate; each flow channel is internally provided with a spring used for achieving periodic reciprocating motion on cooling liquid. The two ends of the water inlet pipeline and the two ends of the water outlet pipeline are connected with the multiple flow channels and the refrigerating unit correspondingly. The periodic reciprocating motion of the spring in the profile liquid cooling plate can increase the turbulence intensity of a flow field, destroy the boundary layer of the flow field, increase the heat exchange capacity of the profile liquid cooling plate, and have lasting heat exchange capacity for the liquid cooling plate; the whole liquid cooling system has efficient heat exchange capability, can be applied to the design of the battery pack needing high-rate charge and discharge, and promotes the development of the battery pack needing high-rate charge and discharge.

Description

Technical Field

[0001] The utility model relates to related technical fields such as power battery thermal management systems, and in particular to a pulsating flow enhanced heat transfer liquid cooling system. Background Art

[0002] The electric vehicle industry is rapidly developing. As the primary power source for electric vehicles, the operational stability of battery packs is particularly important, but current battery thermal management issues remain. Traditional battery pack cooling methods generally fall into two categories: natural cooling and air cooling. In high ambient temperatures, when electric vehicles are driving at high speeds or rapidly charging, the temperature of the battery cells increases dramatically. These two battery pack cooling methods have low heat dissipation efficiency, making it difficult to cool the battery cells to the appropriate operating range, resulting in reduced battery pack operational stability. Therefore, liquid cooling plates are required to dissipate heat for these two battery packs.

[0003] Currently, the liquid cooling plates in the liquid cooling system are mainly divided into stamped liquid cooling plates and profile liquid cooling plates. Among them, the stamped liquid cooling plates have good heat exchange effects, but the flow channels are tortuous and complex. The profile liquid cooling plates are limited by the processing technology, and their flow channels are straight, which cannot form a complex circuit. As a result, the coolant stays in the profile liquid cooling plate for a shorter time and the path is shorter, the turbulence intensity of the coolant is lower, and the heat exchange efficiency is not ideal. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a pulsating flow enhanced heat transfer liquid cooling system, which includes:

[0005] Liquid cooling plate, several springs, water inlet pipes, water outlet pipes, and refrigeration units;

[0006] The liquid cooling plate is made of a profile plate, and a plurality of protrusions are arranged transversely in the liquid cooling plate, so that a plurality of cooling liquid flow channels are interconnected in the liquid cooling plate;

[0007] A spring is installed in each of the flow channels to cause the coolant to move back and forth periodically;

[0008] Both ends of the water inlet pipeline and both ends of the water outlet pipeline are respectively connected to a plurality of the flow channels and the refrigeration unit.

[0009] The above-mentioned pulsating flow enhanced heat transfer liquid cooling system, wherein the liquid cooling plate includes: a first blocking bar, a second blocking bar, and a cavity; several of the protrusions are arranged inside the cavity, the first blocking bar and the second blocking bar are installed at both ends of the cavity, one end of several of the springs are welded to the first blocking bar, and the other ends of several of the springs extend into several of the flow channels.

[0010] In the above-mentioned pulsating flow enhanced heat transfer liquid cooling system, gaps are left between both ends of the plurality of protrusions and the first blocking bar and the second blocking bar.

[0011] The above-mentioned pulsating flow enhanced heat transfer liquid cooling system further includes: a water inlet; the water inlet is installed in the gap between the first blocking bar and the plurality of the protrusions, and the water inlet pipeline is installed in the water inlet.

[0012] The above-mentioned pulsating flow enhanced heat transfer liquid cooling system further includes: a water outlet; the water outlet is installed in the gap between the second blocking bar and the plurality of the protrusions, and the water outlet pipe is installed at the water outlet.

[0013] In the above-mentioned pulsating flow enhanced heat transfer liquid cooling system, several of the springs extend into the flow channel through the inlets of the flow channel, and there is a gap between the springs and the outlet of the flow channel.

[0014] In the above-mentioned pulsating flow enhanced heat transfer liquid cooling system, a groove is provided at each end of the cavity.

[0015] In the above-mentioned pulsating flow enhanced heat transfer liquid cooling system, the first blocking bar and the second blocking bar are welded to the two grooves by a stir friction welding process.

[0016] In the above-mentioned pulsating flow enhanced heat transfer liquid cooling system, the water inlet and the water outlet are welded to the cavity by an argon arc welding process.

[0017] In the above-mentioned pulsating flow enhanced heat transfer liquid cooling system, the water inlet pipe and the water outlet pipe are both connected to the refrigeration unit through two bends.

[0018] Compared with the prior art, the above technical solution has the following positive effects:

[0019] 1. The periodic reciprocating motion of the spring in the profile liquid cooling plate can increase the turbulence intensity of the flow field, destroy the boundary layer of the flow field, and increase the heat exchange capacity of the profile liquid cooling plate;

[0020] 2. The liquid cooling unit can realize the pulsating flow of coolant in the liquid cooling system, forming a "resonance" with the periodic reciprocating motion of the spring in the profile liquid cooling plate, maximizing the amplitude of the spring's periodic reciprocating motion and making the spring's periodic reciprocating motion durable;

[0021] 3. The entire liquid cooling system has efficient heat exchange capabilities and can be applied to battery pack designs that require high-rate charge and discharge, promoting the development of high-rate charge and discharge battery packs;

[0022] 4. The spring is fixed to the blocking strip by welding to limit the displacement of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a pulsating flow enhanced heat transfer liquid cooling system of the present invention.

[0024] Figure 2 This is an exploded diagram of a pulsating flow enhanced heat transfer liquid cooling system of the present invention.

[0025] Figure 3 This is an exploded view of the liquid cooling plate in the present invention.

[0026] Figure 4 This is a schematic diagram of the installation of the spring in the present utility model.

[0027] Figure 5 This is a schematic diagram of the installation of the liquid cooling plate in the present invention.

[0028] 1. Liquid cooling plate; 11. Bump; 111. Gap; 12. First blocking bar; 13. Second blocking bar; 14. Cavity; 141. Groove; 2. Spring; 3. Water inlet pipe; 4. Water outlet pipe; 5. Refrigeration unit; 6. Flow channel; 7. Water inlet; 8. Water outlet. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific implementations, but they are not intended to limit the present invention.

[0030] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the present invention and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0031] like Figures 1 to 5 As shown, a pulsating flow enhanced heat transfer liquid cooling system of a preferred embodiment is shown, which includes: a liquid cooling plate 1, a plurality of springs 2, a water inlet pipeline 3, a water outlet pipeline 4, and a refrigeration unit 5.

[0032] The liquid cooling plate 1 is made of a profile plate, and a number of protrusions 11 are arranged horizontally in the liquid cooling plate 1, so that the liquid cooling plate 1 has a number of flow channels 7 that are interconnected with the coolant; a spring 2 is installed in each flow channel 7 to cause the coolant to perform periodic reciprocating motion; both ends of the water inlet pipe 3 and the two ends of the water outlet pipe 4 are respectively connected to the several flow channels 7 and the refrigeration unit 5.

[0033] In actual use, the coolant is cooled by the refrigeration unit 5, then enters the flow channels 7 through the water inlet pipe 3, and finally flows out of the flow channels 7 through the water outlet pipe 4 to form a liquid cooling circuit. For details, please refer to Figure 1 As shown by the arrows in the middle, when the coolant flows in the plurality of flow channels 7, the coolant can push the plurality of springs 2 to perform periodic reciprocating motion in the flow channels 7. The periodic reciprocating motion of the springs 2 can significantly enhance the flow field disturbance inside the profile liquid cooling plate 1 and destroy the flow field boundary layer. In addition, the refrigeration unit 5 controls the pulsating flow of the coolant in the flow field, adjusts the average flow rate and peak flow rate, and forms a "resonance" with the periodic reciprocating motion of the springs 2 in the profile liquid cooling plate 1, maximizing the amplitude of the periodic reciprocating motion of the springs 2, making the periodic reciprocating motion of the springs 2 durable and further improving the heat exchange capacity of the profile liquid cooling plate 1.

[0034] The present invention also has the following implementation methods based on the above:

[0035] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is described, wherein the liquid cooling plate 1 comprises: a first blocking bar 12, a second blocking bar 13, and a cavity 14; several bumps 11 are disposed within the cavity 14, and the first and second blocking bars 12, 13 are mounted at both ends of the cavity 14. One end of several springs 2 is welded to the first blocking bar 12, and the other ends of the springs 2 extend into the flow channels 7. Specifically, the springs 2 are secured to the first blocking bar 12 by welding, limiting their displacement. Each flow channel 7 is provided with a spring 2 to achieve periodic reciprocating motion of the internal springs 2 within the flow channel 7.

[0036] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is provided, wherein gaps 111 are left between both ends of the plurality of bumps 11 and the first blocking bar 12 and the second blocking bar 13. Specifically, the coolant entering the flow channel 7 through the water inlet pipe 3 is first divided through the gap 111 between the bump 11 and the first blocking bar 12, then enters the plurality of flow channels 7, and finally converges through the gap 111 between the bump 11 and the second blocking bar 13 to enter the water outlet pipe 4.

[0037] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system further includes: a water inlet 8; the water inlet 8 is installed in the gap 111 between the first blocking bar 12 and the plurality of protrusions 11, and the water inlet pipe 3 is installed at the water inlet 8.

[0038] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is provided, which further includes: a water outlet 9; the water outlet 9 is installed in the gap 111 between the second blocking bar 13 and the plurality of protrusions 11, and the water outlet pipe 4 is installed at the water outlet 9. Specifically, the coolant after being cooled by the refrigeration unit 5 flows through the water inlet pipe 3 and enters the liquid cooling plate 1 through the water outlet 9. The coolant is then divided into the plurality of flow channels 7, and the plurality of springs 2 in the plurality of flow channels 7 undergo periodic reciprocating motion to cool the liquid cooling plate 1. Finally, the coolant converges through the water outlet 9 and returns to the water outlet pipe 4, forming a complete liquid cooling circuit, and then this liquid cooling circuit is repeated multiple times to cool the liquid cooling plate 1.

[0039] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is provided, wherein a plurality of springs 2 extend into the flow channels 7 through the inlets of the flow channels 7, and a gap is provided between the springs 2 and the outlets of the flow channels 7. Specifically, the springs 2 are partially located in the flow channels 7. When the coolant is in the flow channels 7, the periodic reciprocating motion of the springs 2 first cools the liquid cooling plate 1. The coolant then flows smoothly through the flow channels 7 without the springs 2 and into the water outlet 9.

[0040] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is provided, wherein a groove 141 is provided at each end of the cavity 14 .

[0041] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is provided, wherein the first and second blocking bars 12, 13 are welded to the two grooves 141 via a stir friction welding process. Specifically, the first and second blocking bars 12, 13 confine the coolant within the liquid cooling plate 1, preventing the coolant from flowing out of the liquid cooling plate 1. Furthermore, the first and second blocking bars 12, 13 are welded to the cavity 14 via a stir friction welding process, thereby providing a better sealing effect on the coolant.

[0042] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is provided, wherein the water inlet 8 and the water outlet 9 are welded to the cavity 14 by an argon arc welding process. Specifically, the water inlet 8 and the water outlet 9 are welded to the cavity 14 by an argon arc welding process to ensure that the coolant can flow smoothly through the profile liquid cooling plate 1.

[0043] Furthermore, a pulsating flow enhanced heat transfer liquid cooling system is provided, wherein the water inlet pipe 3 and the water outlet pipe 4 are both connected to the refrigeration unit 5 through two bends. Specifically, the refrigeration unit 5 can be located away from the liquid cooling plate 1.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulsating flow enhanced heat transfer liquid cooling system, characterized in that: include: Liquid cooling plate, several springs, water inlet pipes, water outlet pipes, refrigeration unit; The liquid cooling plate is a profile plate, and a plurality of protrusions are arranged transversely in the liquid cooling plate, so that the liquid cooling plate has a plurality of flow channels for cooling liquid to communicate with each other; A spring is installed in each of the flow channels to cause the coolant to make periodic reciprocating motion; Both ends of the water inlet pipeline and both ends of the water outlet pipeline are respectively connected to a plurality of the flow channels and the refrigeration unit.

2. The pulsating flow enhanced heat transfer liquid cooling system according to claim 1, characterized in that: The liquid cooling plate includes: a first blocking bar, a second blocking bar, and a cavity; a plurality of the protrusions are arranged inside the cavity, the first blocking bar and the second blocking bar are installed at both ends of the cavity, one end of a plurality of the springs are welded to the first blocking bar, and the other ends of the plurality of the springs extend into a plurality of the flow channels.

3. The pulsating flow enhanced heat transfer liquid cooling system according to claim 2, characterized in that: Gaps are left between both ends of the plurality of protrusions and the first blocking bar and the second blocking bar.

4. The pulsating flow enhanced heat transfer liquid cooling system according to claim 3, characterized in that: Also includes: Water inlet; The water inlet is installed in the gap between the first blocking strip and a plurality of the protrusions, and the water inlet pipeline is installed in the water inlet.

5. The pulsating flow enhanced heat transfer liquid cooling system according to claim 4, characterized in that: Also includes: Water outlet; The water outlet is installed in the gap between the second blocking strip and a plurality of the protrusions, and the water outlet pipeline is installed at the water outlet.

6. The pulsating flow enhanced heat transfer liquid cooling system according to claim 1, characterized in that: A plurality of the springs extend into the flow channel through the inlets of the flow channel, and a plurality of the springs have a gap from the outlet of the flow channel.

7. The pulsating flow enhanced heat transfer liquid cooling system according to claim 2, characterized in that: A groove is respectively arranged at two ends of the cavity.

8. The pulsating flow enhanced heat transfer liquid cooling system according to claim 7, characterized in that: The first blocking bar and the second blocking bar are welded to the two grooves by a friction stir welding process.

9. The pulsating flow enhanced heat transfer liquid cooling system according to claim 5, characterized in that: The water inlet and the water outlet are welded to the cavity by argon arc welding.

10. The pulsating flow enhanced heat transfer liquid cooling system according to claim 1, characterized in that: The water inlet pipeline and the water outlet pipeline are both connected to the refrigeration unit through two bends.

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