Liquid cooling device

Abstract

The utility model discloses a liquid cooling device which is used for cooling a cylindrical battery for testing the cycle life, and relates to the technical field of liquid cooling equipment. The liquid cooling device comprises a liquid cooling assembly, the liquid cooling assembly is provided with at least one mounting groove used for loading the cylindrical battery, a continuous liquid cooling pipeline is further arranged in the liquid cooling assembly, the liquid cooling pipeline is arranged on the outer side of the mounting groove, and the liquid cooling pipeline is filled with flowing cooling liquid to absorb and take away heat generated by the cylindrical battery in the cycle life test; the liquid cooling device further comprises a heat dissipation pipe assembly, the heat dissipation pipe assembly is arranged on the outer side of the liquid cooling assembly and exposed in the heat exchange medium, and the heat dissipation pipe assembly communicates with the liquid cooling pipeline so as to improve the heat dissipation performance of the liquid cooling assembly. The utility model provides a liquid cooling device, which is used for quickly cooling a cylindrical battery subjected to a cycle life test to meet the test cooling requirement so as to ensure the test safety and improve the test accuracy of the cycle life test of the cylindrical battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid cooling equipment technical field especially relates to a liquid cooling device for the cylindrical battery heat dissipation of carrying out cycle life test. BACKGROUND

[0002] Battery cycle life is an important index of battery performance, and cycle life refers to the number of cycles that a battery can withstand before its capacity drops to a certain specified value under a certain charging and discharging system (one cycle refers to one charge and one discharge). The cycle life of the battery is an important parameter that needs to be examined for electric vehicles. Before purchasing an electric vehicle, users generally have the need to know the cycle life of the battery of the electric vehicle. In order to meet the needs of users and ensure the quality of electric vehicles, the cycle life of the battery is usually tested in the production process.

[0003] Taking a cylindrical battery as an example, when testing the cycle life of the cylindrical battery, the cylindrical battery is always in a fast charging and discharging state, especially during the charging process, and the heat generation of the cylindrical battery is more serious than in daily use.

[0004] In the face of the problem of battery heating, the conventional method is usually to place the heating battery directly in air or a water tank to allow the battery to dissipate heat naturally or rely on the water in the water tank to dissipate heat. However, this conventional cooling method cannot meet the cooling needs of the cylindrical battery during cycle life testing. SUMMARY

[0005] The utility model provides a kind of liquid cooling device, for the cylindrical battery of carrying out cycle life test fast heat dissipation, meet the testing heat dissipation demand, to guarantee test safety, and improve the test accuracy of the cycle life test of cylindrical battery, to solve the above technical problems.

[0006] The technical scheme for solving the above problems of the utility model is to provide a kind of liquid cooling device, for the cylindrical battery heat dissipation of carrying out cycle life test, the liquid cooling device includes liquid cooling component, at least one installation slot for loading the cylindrical battery is equipped on the liquid cooling component, and the liquid cooling component is further provided with continuous liquid cooling pipeline inside, the liquid cooling pipeline is arranged outside installation slot, and the liquid cooling pipeline is filled with flowing cooling liquid to absorb and remove the heat generated by the cylindrical battery during cycle life test;The liquid cooling device further includes a heat dissipation pipe assembly, the heat dissipation pipe assembly is arranged outside the liquid cooling component and exposed in heat exchange medium, and the heat dissipation pipe assembly is communicated with the liquid cooling pipeline to improve the heat dissipation performance of the liquid cooling component.

[0007] Further, the heat dissipation pipe assembly comprises a heat dissipation pipe and a plurality of heat dissipation fins uniformly arranged on the outer side of the heat dissipation pipe; the inlet end of the heat dissipation pipe is communicated with the outlet end of the liquid cooling pipe, the outlet end of the heat dissipation pipe is located on the outer surface of the liquid cooling assembly, and the outlet end of the heat dissipation pipe is communicated to the circulating cooling liquid tank through an outlet pipe.

[0008] Further, the liquid cooling pipe and / or the heat dissipation pipe comprise a plurality of U-shaped pipes connected in sequence.

[0009] Further, the liquid cooling assembly comprises two oppositely arranged liquid cooling blocks, and the two liquid cooling blocks are matched to clamp and fix the cylindrical battery; the mounting groove is a region where the two liquid cooling blocks are matched to clamp and fix the cylindrical battery.

[0010] Further, the two liquid cooling blocks are each provided with a plurality of arc-shaped grooves, and the arc-shaped grooves of the two liquid cooling blocks are opposite to each other, and the two liquid cooling blocks are matched to fit the cylindrical battery through the arc-shaped grooves.

[0011] Further, the liquid cooling assembly further comprises at least two adjusting assemblies matched to limit and connect the two liquid cooling blocks.

[0012] Further, the adjusting assembly is further used for adjusting the width of the mounting groove.

[0013] Further, the adjusting assembly comprises an adjusting bolt, an adjusting nut and an adjusting hole, the two liquid cooling blocks are each provided with an adjusting hole, the adjusting bolt is simultaneously inserted into the adjusting holes of the two liquid cooling blocks, the adjusting nut is threadedly sleeved on the adjusting bolt, and the nut of the adjusting bolt and the adjusting nut are matched to clamp and limit the two liquid cooling blocks; the width of the mounting groove is further adjusted by rotating and adjusting the position of the adjusting nut.

[0014] Further, the liquid cooling pipe is arranged in each of the two liquid cooling blocks, the liquid cooling pipes in the two liquid cooling blocks are communicated through a three-way pipe, and the three-way pipe is communicated to the circulating cooling liquid tank through a liquid supply pipe.

[0015] Further, the liquid supply pipe is further provided with a flow valve.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model discloses a liquid cooling device, its accommodation groove can accommodate and install multiple cylindrical batteries simultaneously, and cylindrical battery can keep close and intimate state with liquid cooling assembly at arc groove, and when the cylindrical battery in the accommodation groove is in the cycle life test, the cooling liquid can flow continuously in the liquid cooling pipeline set to the inside of liquid cooling assembly, and when the cooling liquid flows through the periphery of accommodation groove, the cooling liquid can absorb part of heat radiated from the cylindrical battery, to carry out liquid cooling heat dissipation treatment to the cylindrical battery of cycle life test. Moreover, the cooling liquid that absorbed heat can flow through the radiating pipe assembly, and the cooling liquid can radiate quickly through the radiating pipe assembly, so that the cooling liquid can flow through the periphery of accommodation groove again through the liquid outlet pipeline, the circulating cooling liquid tank, the liquid supply pipeline again in the short time, to absorb heat again, to satisfy the quick heat dissipation demand of cylindrical battery when carrying out cycle life test.

[0018] In addition, since the width of the accommodation groove can be adjusted by the adjusting member, the liquid cooling device of the utility model can also be suitable for the heat dissipation demand of cylindrical batteries of various specifications when carrying out cycle life test. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings in the following description are some embodiments of the present utility model, not all embodiments. For ordinary skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0020] Figure 1 It is the overall structure diagram of the liquid cooling device of the embodiment;

[0021] Figure 2 It is the structure diagram of the liquid cooling block of the embodiment;

[0022] Figure 3 It is the sectional view of the liquid cooling block of the embodiment;

[0023] Figure 4 It is the sectional view of the radiating pipe assembly of the embodiment;

[0024] 1-liquid cooling assembly, 11-liquid cooling block, 12-arc groove, 13-adjusting bolt, 14-adjusting nut, 15-adjusting hole;

[0025] 2-mounting groove;

[0026] 3-liquid cooling pipeline;

[0027] 4-radiating pipe assembly, 41-radiating pipeline, 42-radiating fin;

[0028] 5 - three-way pipe, 6 - liquid supply pipe, 7 - flow valve. DETAILED DESCRIPTION

[0029] In this specification, the orientation terms such as upper, lower, left, right, front, rear, front face, back face, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the configuration shown in the respective drawings, and the words "inner" and "outer" refer to the direction toward or away from the geometric center of a particular component, which are relative concepts, so it is possible to change accordingly according to the different positions, different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0030] Referring to Figures 1 to 4 The utility model discloses a liquid cooling device for the heat dissipation of cylindrical battery for cycle life test, the liquid cooling device includes liquid cooling assembly 1, four installation grooves 2 for loading the cylindrical battery are equipped on the liquid cooling assembly 1, and the liquid cooling assembly 1 is also equipped with continuous liquid cooling pipeline 3 inside, the liquid cooling pipeline 3 is arranged around the installation groove 2, and the liquid cooling pipeline 3 is filled with flowing cooling liquid, when the cylindrical battery is placed into the installation groove 2 and is connected with external test equipment in the installation groove 2 to carry out cycle life test, the cooling liquid flows through the periphery of installation groove 2 to absorb the heat generated during the test of cylindrical battery.

[0031] Specifically, the liquid cooling assembly 1 includes two oppositely arranged liquid cooling blocks 11, the area between the two liquid cooling blocks 11 is the installation groove 2, the outer side of the two liquid cooling blocks 11 is provided with a groove, and the heat pipe assembly 4 is arranged in the groove, the heat pipe assembly 4 is communicated with the liquid cooling pipeline 3 in the liquid cooling block 11, the cooling liquid enters from the inlet end of the liquid cooling pipeline 3, flows out from the outlet end of the liquid cooling pipeline 3, flows into the heat pipe assembly 4 from the outlet end of the liquid cooling pipeline 3, and then flows into the circulating cooling liquid tank from the outlet end of the heat pipe assembly 4, and under the action of the circulating pump, the cooling liquid is injected into the liquid cooling pipeline 3 from the circulating cooling liquid tank again, and forms a cycle. For this, in the single flow path of the cooling liquid, the cooling liquid will flow through the installation groove 2 first, and absorb the heat generated during the cycle life test of the cylindrical battery placed in the installation groove 2, and then flow into the heat pipe assembly 4 to fully dissipate the heat, so that the cooling liquid can flow into the liquid cooling pipeline 3 again to circulate, so as to heat the cylindrical battery again, and further increase the heat dissipation efficiency of the device to meet the heat dissipation demand of the cylindrical battery during the cycle life test.

[0032] Further, in the embodiment, referring to Figure 1 And Figure 2The left and right ends of the liquid cooling assembly 1 are respectively provided with an adjusting assembly, and the two adjusting assemblies are matched to fixedly connect the two liquid cooling blocks 11 of the liquid cooling assembly 1, and the technician can also adjust the spacing between the two liquid cooling blocks 11 through the two adjusting assemblies, so as to adjust the size of the mounting groove 2, so as to adapt to cylindrical batteries of different specifications.

[0033] Specifically, referring to the orientation shown in Figure 1 , the adjusting assembly at the left end of the liquid cooling assembly 1 is taken as an example; in this embodiment, the adjusting assembly comprises an adjusting bolt 13, an adjusting nut 14 and an adjusting hole 15, the left end of each of the two liquid cooling blocks 11 is provided with a groove, and the left end of each of the two liquid cooling blocks 11 is further provided with an adjusting hole 15, the adjusting holes 15 at the left end of the two liquid cooling blocks 11 overlap with each other in the horizontal direction, the adjusting bolt 13 is inserted into the two adjusting holes 15 at the same time, the nut of the adjusting bolt 13 is limited by the left adjusting hole 15, and the adjusting nut 14 is screwed onto the adjusting bolt 13 and is limited by the right adjusting hole 15; the adjusting assembly at the right end of the liquid cooling assembly 1 is also the same.

[0034] As described above, when a cylindrical battery is arranged in the mounting groove 2, the two adjusting assemblies can be matched to clamp and fix the cylindrical battery in the mounting groove 2; in addition, the technician can also adjust the spacing between the two liquid cooling blocks 11 by rotating the adjusting nut 14, so as to adjust the size of the mounting groove 2, so that the liquid cooling assembly 1 can accommodate cylindrical batteries of different sizes.

[0035] Further, referring to Figure 2 , four arc-shaped grooves 12 are arranged on the opposite side walls of each of the two liquid cooling blocks 11, the arc-shaped grooves 12 on the two liquid cooling blocks 11 are opposite to each other, the groove wall of the arc-shaped groove 12 is a circular arc surface, compared with a plane, the arc-shaped groove 12 has a relatively large contact surface with the side wall of the cylindrical battery, so as to further improve the heat dissipation efficiency of the liquid cooling assembly 1. In addition, the cylindrical battery can also be further limited by the two opposite arc-shaped grooves 12, so as to avoid the cylindrical battery from moving randomly in the mounting groove 2, which has a negative impact on the cycle life test.

[0036] It should be noted that, in other embodiments, the number of arc-shaped grooves 12 on one liquid cooling block 11 is not limited to four, and the number can be one, two, three, five or more; in addition, when the number of arc-shaped grooves 12 exceeds one, each arc-shaped groove 12 can have different sizes, so that the liquid cooling device of the present embodiment can simultaneously cool and dissipate heat for cylindrical batteries of multiple sizes.

[0037] Referring to Figure 3 , the liquid cooling assembly 1 can be used for liquid cooling and dissipating heat for cylindrical batteries of different sizes. Figure 3As shown in the orientation, in the embodiment, the inside of each of the two liquid cooling blocks 11 is provided with a liquid cooling pipe 3; taking one of the liquid cooling blocks 11 as an example, the liquid cooling block 11 is a metal block, the liquid cooling pipe 3 inside the liquid cooling block 11 is a three-section tube cavity with high-to-low mutual parallelism, and the three sections of the liquid cooling pipe 3 are sequentially connected at the head and tail, and the three-section tube cavities are all arranged at the periphery of the mounting groove 2, the right end of the highest tube cavity is the inlet end of the liquid cooling pipe 3, the inlet end of the liquid cooling pipe 3 is integrally formed on the liquid cooling block 11, and an intermediate connecting pipe is further arranged at the inlet end of the liquid cooling pipe 3, the liquid cooling pipe 3 is connected to one pipe end of the three-way pipe 5 through the intermediate connecting pipe, and a connecting cavity is further formed on the left side of the lowest tube cavity, which is horizontally perpendicular to the tube cavity.

[0038] In the embodiment, the two pipe ends of the three-way pipe 5 are respectively communicated with an intermediate connecting pipe, and the remaining one pipe end of the three-way pipe 5 is connected to the liquid supply pipe 6, the other end of the liquid supply pipe 6 is also communicated with the circulating cooling liquid tank, and the liquid supply pipe 6 is further provided with a flow valve 7 and a circulating pump, the circulating pump is used to drive the cooling liquid to circulate, and the flow valve 7 is used to control and adjust the flow of the cooling liquid.

[0039] Further, please refer to Figure 4 , and Figure 3 As shown in the orientation, in the embodiment, the heat dissipation pipe assembly 4 also includes three-section heat dissipation pipes 41 with high-to-low mutual parallelism, and a plurality of heat dissipation fins 42 are equidistantly arranged on the outer side of the three-section heat dissipation pipes 41, the heat dissipation pipes 41 are copper pipes, and the heat dissipation fins 42 are copper sheets; the inlet end of the heat dissipation pipe 41 is communicated with the connecting cavity described above, and further communicated with the outlet end of the liquid cooling pipe 3, the outlet end of the heat dissipation pipe assembly 4 is located at the right end of the highest heat dissipation pipe 41, and the outlet end of the heat dissipation pipe assembly 4 is also integrally formed on the liquid cooling block 11, and the outlet end of the heat dissipation pipe assembly 4 is communicated to the circulating cooling liquid tank through the liquid outlet pipe.

[0040] It should be noted that, in the embodiment, in order to facilitate the adjustment of the distance between the two liquid cooling blocks 11 through the adjusting assembly, and to facilitate the adjustment of the size of the mounting groove 2, the liquid outlet pipe and the intermediate connecting pipe are both flexible pipes, and the lengths of the two are greater than the distances from the circulating cooling liquid tank and the three-way pipe 5 respectively.

[0041] In other embodiments, the heat dissipation pipes 41 and the heat dissipation fins 42 can also be made of other metal materials with good heat conduction and heat dissipation performance.

[0042] In addition, in the embodiment, the cooling liquid is pure water or other types of liquid medium, and the heat exchange medium can be water or air, etc.

[0043] The above-mentioned matters not mentioned are applicable to the prior art.

[0044] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit it. Although the utility model has been explained in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A liquid cooling device for dissipating heat from a cylindrical battery undergoing a cycle life test, characterized by, The liquid cooling device comprises a liquid cooling assembly (1), at least one mounting groove (2) for loading the cylindrical battery is arranged on the liquid cooling assembly (1), and a continuous liquid cooling pipeline (3) is further arranged in the liquid cooling assembly (1), the liquid cooling pipeline (3) is arranged outside the mounting groove (2), the liquid cooling pipeline (3) is filled with flowing cooling liquid to absorb and remove the heat generated by the cylindrical battery during the cycle life test; the liquid cooling device further comprises a heat dissipation pipeline assembly (4), the heat dissipation pipeline assembly (4) is arranged outside the liquid cooling assembly (1) and exposed to a heat exchange medium, and the heat dissipation pipeline assembly (4) is communicated with the liquid cooling pipeline (3) to improve the heat dissipation performance of the liquid cooling assembly (1).

2. The liquid cooling device of claim 1, wherein, The heat dissipation pipeline assembly (4) comprises a heat dissipation pipeline (41) and a plurality of heat dissipation fins (42) uniformly arranged outside the heat dissipation pipeline (41); the inlet end of the heat dissipation pipeline (41) is communicated with the outlet end of the liquid cooling pipeline (3), the outlet end of the heat dissipation pipeline (41) is located on the outer surface of the liquid cooling assembly (1), and the outlet end of the heat dissipation pipeline (41) is communicated to the circulating cooling liquid tank through a liquid outlet pipeline.

3. The liquid cooling device of claim 2, wherein, The liquid cooling pipeline (3) and / or the heat dissipation pipeline (41) comprises a plurality of U-shaped pipelines connected in sequence.

4. The liquid cooling device of claim 1, wherein, The liquid cooling assembly (1) comprises two oppositely arranged liquid cooling blocks (11), and the two liquid cooling blocks (11) are matched to clamp and fix the cylindrical battery; the mounting groove (2) is the region where the two liquid cooling blocks (11) are matched to clamp and fix the cylindrical battery.

5. The liquid cooling device of claim 4, wherein, The two liquid cooling blocks (11) are each provided with a plurality of arc-shaped grooves (12), and the arc-shaped grooves (12) of the two liquid cooling blocks (11) are opposite to each other, and the two liquid cooling blocks (11) are matched through the arc-shaped grooves (12) to fit the cylindrical battery.

6. The liquid cooling device of claim 4, wherein, The liquid cooling assembly (1) further comprises at least two adjusting assemblies, and the adjusting assemblies are matched to limit and connect the two liquid cooling blocks (11).

7. The liquid cooling device of claim 6, wherein, The adjusting assembly is further used for adjusting the width of the mounting groove (2).

8. The liquid cooling device of claim 7, wherein, The adjusting assembly comprises an adjusting bolt (13), an adjusting nut (14) and an adjusting hole (15), the two liquid cooling blocks (11) are each provided with the adjusting hole (15), the adjusting bolt (13) is simultaneously inserted into each adjusting hole (15) of the two liquid cooling blocks (11), the adjusting nut (14) is threadedly sleeved on the adjusting bolt (13), and the nut of the adjusting bolt (13) and the adjusting nut (14) are matched to clamp and limit the two liquid cooling blocks (11); the width of the mounting groove (2) is further adjusted by rotating and adjusting the position of the adjusting nut (14).

9. The liquid cooling device of claim 4, wherein, The liquid cooling pipeline (3) is arranged in each of the two liquid cooling blocks (11), the liquid cooling pipelines (3) in the two liquid cooling blocks (11) are communicated with each other through a three-way pipe (5), and the three-way pipe (5) is further communicated to the circulating cooling liquid tank through a liquid supply pipeline (6).

10. The liquid cooling device of claim 9, wherein, The liquid supply pipeline (6) is further provided with a flow valve (7).

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