Internal structure of flow channel of liquid cooling plate

Abstract

The utility model provides a liquid cooling plate flow channel internal structure, which relates to the technical field of power batteries, and comprises a liquid cooling flat plate and a flow channel plate, the bottom of the liquid cooling flat plate is provided with a plurality of groups of reinforcing ribs, the flow channel plate is internally provided with a flow channel, and cooling liquid flows through the flow channel; the liquid cooling flat plate is arranged above the flow channel plate, the reinforcing ribs extend into the flow channel and are in contact with the flow channel plate, the liquid cooling flat plate and the flow channel plate form a cooling assembly, and the cooling assembly is arranged on the bottom surface of the battery cell; according to the utility model, the T-shaped reinforcing ribs are additionally arranged on the liquid-cooling flat plate and are welded with the liquid-cooling flat plate in a brazing manner, and the bottom surface is in contact with the interior of the runner plate, so that the contact area of the whole liquid-cooling flat plate and cooling liquid is increased, the heat exchange efficiency is improved, the structural strength of the liquid-cooling flat plate is improved, and the environmental adaptability is improved; and the gap between the battery cell and the liquid cooling flat plate is filled with the solder, so that good heat conduction is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field especially relates to a liquid cooling plate runner internal structure. BACKGROUND

[0002] At present, power battery heat dissipation is various, and the air cooling heat dissipation efficiency is low, and the volume is big and the temperature difference control is poor, along with the current power battery capacity more and more big, energy density more and more high, battery charge-discharge power more and more big, the new problem that brings is the increasing demand of heat dissipation, and the air cooling has been difficult to meet the demand, and the liquid cooling heat dissipation has become the current mainstream heat dissipation scheme with the advantages such as high heat dissipation performance and small volume.

[0003] Because temperature can directly influence the conductivity of battery material and internal resistance, and high temperature can lead to the unstable performance of battery, and involve personal safety, therefore, how to quickly and efficiently dissipate heat is the direction that needs to be improved at present, and the mainstream product on the market is by two pieces of aluminum alloy sheet brazing together, and hollow cooling liquid runner is arranged in the middle to dissipate heat of the battery cell, and because the heat exchange area is insufficient, the heat dissipation effect is not good, and the efficiency is low, therefore, the utility model provides a liquid cooling plate runner internal structure to solve the problems in the prior art. SUMMARY

[0004] In view of the above problems, the utility model provides a liquid cooling plate runner internal structure, which increases the contact area with the cooling liquid by arranging the reinforcing ribs in the runner, improves the heat exchange efficiency, effectively improves the heat dissipation efficiency, prolongs the service life of the battery cell, and at the same time, increases the strength of the liquid cooling flat plate and improves the environmental adaptability.

[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: a liquid cooling plate runner internal structure, comprising a liquid cooling flat plate and a runner plate, the bottom of the liquid cooling flat plate is provided with reinforcing ribs, and the reinforcing ribs are provided with multiple groups, the inside of the runner plate is provided with a runner, and the inside of the runner flows through cooling liquid.

[0006] The liquid cooling flat plate is arranged above the runner plate, the reinforcing ribs extend to the inside of the runner and contact the runner plate, the liquid cooling flat plate and the runner plate form a cooling assembly, and the cooling assembly is arranged on the bottom surface of the battery cell.

[0007] Further improvement lies in that the bottom surface of the battery cell contacts the surface of the liquid cooling flat plate, and the gap between the battery cell and the liquid cooling flat plate is filled with solder.

[0008] Further improvement lies in that the upper end of the reinforcing rib is welded and fixed between the liquid cooling flat plate through brazing.

[0009] Further improvement lies in that the reinforcing rib is T-shaped aluminum profile, and the bottom surface of the reinforcing rib contacts the runner plate.

[0010] Further improvement lies in that the edge between the flow channel plate and the liquid cooling flat plate is connected through brazing.

[0011] Further improvement lies in that one end of the top of the cooling assembly is provided with water nozzles, and the water nozzles are provided with two groups, and the two groups of water nozzles are extended to the inside of the flow channel.

[0012] Further improvement lies in that the water nozzles and the liquid cooling flat plate are fixed through arc welding connection.

[0013] Further improvement lies in that the length of the cooling assembly is greater than the length of the electric core, and the width of the cooling assembly is greater than the width of the electric core.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model discloses a T-shaped reinforcing rib is added on the liquid cooling flat plate, and the liquid cooling flat plate is welded in a brazing mode, the bottom surface contacts the inside of the flow channel plate, the contact area of the liquid cooling flat plate whole with the cooling liquid is improved, the heat exchange efficiency is improved, the structural strength of the liquid cooling flat plate is improved, and environmental adaptability is improved.

[0016] 2. The utility model discloses a cooling assembly that is composed of the liquid cooling flat plate and the flow channel plate, contacts the bottom surface of the electric core, and fills the gap between the electric core and the liquid cooling flat plate with solder, so that heat conduction between them is ensured. DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is the split schematic view of the utility model;

[0019] Figure 3 It is the cross section schematic view of the utility model;

[0020] Figure 4 It is the reinforcing rib schematic view of the utility model;

[0021] Figure 5 It is the flow channel plate schematic view of the utility model.

[0022] Among them: 1, liquid cooling flat plate;2, flow channel plate;3, reinforcing rib;4, flow channel;5, electric core;6, water nozzle. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the utility model, the utility model will be further described in combination with examples below, and the embodiment is only used to explain the utility model and does not constitute the limitation to the protection scope of the utility model. Example one

[0024] According to Figure 1 ,2 , 3, 4, 5, the embodiment proposes a liquid cooling plate flow channel internal structure, comprising a liquid cooling flat plate 1 and a flow channel plate 2, the bottom of the liquid cooling flat plate 1 is provided with a reinforcing rib 3, and the reinforcing rib 3 is provided with multiple groups, the inside of the flow channel plate 2 is provided with a flow channel 4, and the inside of the flow channel 4 flows through cooling liquid;

[0025] The liquid cooling flat plate 1 is arranged above the flow channel plate 2, the reinforcing rib 3 extends to the inside of the flow channel 4 and contacts the flow channel plate 2, the liquid cooling flat plate 1 and the flow channel plate 2 constitute a cooling assembly, and the cooling assembly is arranged on the bottom surface of the electric core 5. When manufacturing, the T-shaped reinforcing rib 3 is added on the liquid cooling flat plate 1, which is welded with the liquid cooling flat plate 1 in a brazing manner, the bottom surface contacts the inside of the flow channel plate 2, the contact area of the whole liquid cooling flat plate 1 with the cooling liquid is increased, the heat exchange efficiency is improved, and the structural strength of the liquid cooling flat plate 1 is increased, and the environmental adaptability is improved.

[0026] The bottom surface of the electric core 5 contacts the surface of the liquid cooling flat plate 1, and the gap between the electric core 5 and the liquid cooling flat plate 1 is filled with solder. When in use, the cooling assembly composed of the liquid cooling flat plate 1 and the flow channel plate 2 contacts the bottom surface of the electric core 5, and the gap between the electric core 5 and the liquid cooling flat plate 1 is filled with solder, so that good heat conduction between them is ensured.

[0027] The upper end of the reinforcing rib 3 is welded and fixed with the liquid cooling flat plate 1 through brazing, the stability of installation is ensured, the reinforcing rib 3 is integrated with the liquid cooling flat plate 1, the contact area of the whole liquid cooling flat plate 1 with the cooling liquid is increased, and the heat exchange efficiency is improved.

[0028] The reinforcing rib 3 is a T-shaped aluminum profile, and the bottom surface of the reinforcing rib 3 contacts the flow channel plate 2. The T-shaped reinforcing rib 3 is added on the liquid cooling flat plate 1 and welded with the liquid cooling flat plate 1 in a brazing manner, the bottom surface contacts the inside of the flow channel plate 2, the contact area of the whole liquid cooling flat plate 1 with the cooling liquid is increased, the heat exchange efficiency is improved, and the structural strength of the liquid cooling flat plate 1 is increased, and the environmental adaptability is improved.

[0029] The edges between the flow channel plate 2 and the liquid cooling flat plate 1 are connected through brazing, so that the installation firmness and sealing performance are ensured.

[0030] One end of the top of the cooling assembly is provided with a water nozzle 6, and the water nozzle 6 is provided with two groups, and the two groups of water nozzles 6 all extend to the inside of the flow channel 4. The water nozzle 6 is connected and fixed with the liquid cooling flat plate 1 through arc welding. When installing, two water nozzles 6 are arranged to connect the flow channel 4, one is used for entering cooling liquid, and the other is used for discharging cooling liquid, so that the flow effect is ensured. Embodiment two

[0031] According to the embodiment, the liquid cooling flat plate 1 is arranged above the flow channel plate 2, the reinforcing rib 3 extends to the inside of the flow channel 4 and contacts the flow channel plate 2, the liquid cooling flat plate 1 and the flow channel plate 2 constitute a cooling assembly, and the cooling assembly is arranged on the bottom surface of the electric core 5. Figure 1 , 2The embodiment shown in 1, 2, 3, 4, 5 proposes a liquid cooling plate flow channel internal structure, which comprises a liquid cooling flat plate 1 and a flow channel plate 2. The bottom of the liquid cooling flat plate 1 is provided with reinforcing ribs 3, and the reinforcing ribs 3 are provided in multiple groups. The inside of the flow channel plate 2 is provided with a flow channel 4, and cooling liquid flows through the inside of the flow channel 4.

[0032] The liquid cooling flat plate 1 is arranged above the flow channel plate 2. The reinforcing ribs 3 extend to the inside of the flow channel 4 and are in contact with the flow channel plate 2. The liquid cooling flat plate 1 and the flow channel plate 2 constitute a cooling assembly, and the cooling assembly is arranged on the bottom surface of the battery cell 5. During manufacturing, T-shaped reinforcing ribs 3 are added to the liquid cooling flat plate 1 and are welded to the liquid cooling flat plate 1 by brazing. The bottom surface is in contact with the inside of the flow channel plate 2, which increases the contact area of the liquid cooling flat plate 1 with the cooling liquid, improves the heat exchange efficiency, increases the structural strength of the liquid cooling flat plate 1, and improves the environmental adaptability.

[0033] The edges between the flow channel plate 2 and the liquid cooling flat plate 1 are connected by brazing to ensure the firmness and sealing performance of the installation.

[0034] One end of the top of the cooling assembly is provided with a water nozzle 6, and the water nozzle 6 is provided in two groups. Both groups of the water nozzle 6 extend to the inside of the flow channel 4. The water nozzle 6 and the liquid cooling flat plate 1 are connected and fixed by arc welding. During installation, two water nozzles 6 are arranged to connect the flow channel 4, one for introducing cooling liquid and one for discharging cooling liquid to ensure the flow effect.

[0035] The length of the cooling assembly is greater than the length of the battery cell 5, and the width of the cooling assembly is greater than the width of the battery cell 5, so as to ensure that the cooling surface of the cooling assembly can completely cover the heating surface of the battery cell 5.

[0036] Verification example:

[0037] Simulation condition description: The volume heat efficiency of the battery cell is 50KW, the liquid medium is water, the inlet flow rate is 1m / s, and the liquid inlet temperature is 20.05℃. The existing scheme is without T-shaped reinforcing ribs.

[0038] Simulation conclusion: The maximum temperature of the battery cell in the existing scheme is 105.36℃, and the average temperature is 91.08℃. The maximum temperature of the battery cell in the product is 97.77℃, and the average temperature is 83.57℃. Compared with the existing scheme, the average temperature and the maximum temperature of the battery cell in the product are reduced by more than 7℃, and the heat dissipation performance is improved.

[0039] The liquid cooling plate flow channel internal structure increases the T-shaped reinforcing rib 3 on the liquid cooling plate 1, is welded with the liquid cooling plate 1 in a brazing mode, the bottom surface is in contact with the inside of the flow channel plate 2, improves the overall contact area of the liquid cooling plate 1 with the cooling liquid, improves the heat exchange efficiency, simultaneously increases the structural strength of the liquid cooling plate 1, and improves the environmental adaptability.The product is composed of the liquid cooling plate 1 and the flow channel plate 2 to form a cooling assembly, is in contact with the bottom surface of the battery cell 5, and the gap between the battery cell 5 and the liquid cooling plate 1 is filled with solder to ensure good heat conduction between each other.

[0040] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid cooling plate flow channel internal structure, comprising a liquid cooling flat plate (1) and a flow channel plate (2), characterized in that: The bottom of the liquid cooling flat plate (1) is provided with reinforcing ribs (3), and the reinforcing ribs (3) are provided in multiple groups, the inside of the flow channel plate (2) is provided with flow channels (4), and the inside of the flow channels (4) flows through cooling liquid; The liquid cooling flat plate (1) is arranged above the flow channel plate (2), the reinforcing ribs (3) extend into the inside of the flow channels (4) and are in contact with the flow channel plate (2), the liquid cooling flat plate (1) and the flow channel plate (2) constitute a cooling assembly, and the cooling assembly is arranged on the bottom surface of the electric core (5).

2. The internal structure of a flow channel of a liquid cold plate according to claim 1, characterized in that: The bottom surface of the electric core (5) is in contact with the surface of the liquid cooling flat plate (1), and the gap between the electric core (5) and the liquid cooling flat plate (1) is filled with solder.

3. The internal structure of a flow channel of a liquid cold plate according to claim 1, wherein: The upper end of the reinforcing rib (3) is welded and fixed between the liquid cooling flat plate (1) by brazing.

4. The internal structure of a flow channel of a liquid cold plate according to claim 3, characterized in that: The reinforcing rib (3) is a T-shaped aluminum profile, and the bottom surface of the reinforcing rib (3) is in contact with the flow channel plate (2).

5. The internal structure of a flow channel of a liquid cold plate according to claim 1, wherein: The edges between the flow channel plate (2) and the liquid cooling flat plate (1) are connected by brazing.

6. The internal structure of a flow channel of a liquid cold plate according to claim 1, wherein: One end of the top of the cooling assembly is provided with water nozzles (6), and the water nozzles (6) are provided in two groups, and the two groups of water nozzles (6) extend into the inside of the flow channels (4).

7. The liquid cold plate flow channel internal structure of claim 6, wherein: The water nozzles (6) and the liquid cooling flat plate (1) are connected and fixed by arc welding.

8. The liquid cold plate flow channel internal structure of claim 1, wherein: The length of the cooling assembly is greater than the length of the electric core (5), and the width of the cooling assembly is greater than the width of the electric core (5).

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