Liquid cooling radiator for new energy battery

Abstract

The utility model discloses a liquid cooling radiator for a new energy battery. The liquid cooling radiator comprises a lower liquid cooling plate; a flow channel is arranged on the lower liquid cooling plate; the upper liquid cooling plate is arranged above the lower liquid cooling plate and shields the flow channel; the two sides of the upper liquid cooling plate and the two sides of the lower liquid cooling plate are bent upwards to form a U-shaped containing space, and the U-shaped containing space is used for containing a new energy battery. The new energy battery can be accommodated in the U-shaped accommodating space, so that the bottom of the new energy battery can be in contact with the upper liquid cooling plate for heat dissipation and cooling, and the side surface of the new energy battery can be subjected to enhanced heat dissipation through the side surfaces of the upper liquid cooling plate and the lower liquid cooling plate; the temperature uniformity of the new energy battery can be greatly improved, and the heat exchange efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation structure technical field especially relates to a liquid cooling radiator for new energy battery. BACKGROUND

[0002] With the popularity of electric vehicles, the endurance mileage of new energy vehicles has been restricting its rapid development. If the endurance mileage is to be increased, the energy density of the battery needs to be continuously iterated and increased. However, new energy batteries with higher energy density will emit more heat, which will seriously affect the safe operation of new energy vehicles. In particular, soft-pack lithium ion batteries are increasingly used in electric vehicles due to their high energy density, good safety, and low internal resistance. Therefore, it is necessary to design a thermal management system for them.

[0003] However, the traditional liquid cooling heat dissipation equipment for new energy batteries only dissipates heat at the bottom of the battery module, which results in poor temperature uniformity of the new energy battery and easy occurrence of safety heat dissipation exceeding the standard in hot seasons.

[0004] Therefore, the prior art still needs to be improved and developed. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to provide a liquid cooling radiator for new energy batteries to improve the heat dissipation efficiency of the radiator and thus improve the temperature uniformity of the new energy battery.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0007] A liquid cooling radiator for new energy batteries comprises:

[0008] A lower liquid cooling plate is provided with a flow channel;

[0009] An upper liquid cooling plate is arranged above the lower liquid cooling plate and shields the flow channel;

[0010] The upper liquid cooling plate and the lower liquid cooling plate are both arranged upwardly bent on both sides to form a U-shaped accommodating space for accommodating new energy batteries.

[0011] The liquid cooling radiator for new energy batteries further comprises:

[0012] A liquid inlet is arranged at the bottom of the lower liquid cooling plate and communicates with the flow channel;

[0013] A liquid outlet is arranged at the bottom of the lower liquid cooling plate and communicates with the flow channel.

[0014] The liquid cooling radiator for new energy batteries, wherein the liquid inlet and the liquid outlet are located on the same side of the bottom of the lower liquid cooling plate.

[0015] The liquid cooling radiator for new energy batteries, wherein the flow channel comprises:

[0016] The spiral flow channel structure is arranged at the bottom of the lower liquid cooling plate.

[0017] The linear flow channel structure is arranged at both sides of the lower liquid cooling plate.

[0018] The liquid cooling radiator for new energy batteries, wherein the linear flow channel structure comprises:

[0019] The plurality of linear flow channels are arranged in parallel and side by side, and are communicated with each other between every two adjacent linear flow channels, so that the plurality of linear flow channels form a parallel passage.

[0020] The liquid cooling radiator for new energy batteries, wherein the thickness of the lower liquid cooling plate is less than the thickness of the upper liquid cooling plate.

[0021] The liquid cooling radiator for new energy batteries, wherein the thickness of the lower liquid cooling plate is 1mm-1.5mm.

[0022] The liquid cooling radiator for new energy batteries, wherein the thickness of the upper liquid cooling plate is 1.2mm-2mm.

[0023] The liquid cooling radiator for new energy batteries, further comprising:

[0024] The plurality of fixing blocks are arranged at the bending part of the lower liquid cooling plate and located on the side of the lower liquid cooling plate away from the upper liquid cooling plate.

[0025] Beneficial effects: In the present application, the new energy battery can be accommodated in the U-shaped accommodating space, so that the new energy battery can be cooled and cooled by the upper liquid cooling plate in addition to the bottom, and the side of the new energy battery can be cooled and cooled by the side of the upper liquid cooling plate and the side of the lower liquid cooling plate, which can greatly improve the temperature uniformity of the new energy battery and improve the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the overall structure schematic view of the liquid cooling radiator for new energy batteries in the present application;

[0027] Figure 2 is the exploded structure schematic view of the liquid cooling radiator for new energy batteries in the present application;

[0028] Figure 3 is the bottom structure schematic view of the lower liquid cooling plate in the present application;

[0029] Figure 4 Figure 3 is a side view of the liquid cooling plate in the utility model. DETAILED DESCRIPTION

[0030] Other advantages and effects of the present utility model can be easily understood by those skilled in the art from the contents disclosed in the present specification. The present utility model can also be implemented or applied in other different specific embodiments, and various modifications or changes can be made to the details in the present specification based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model, and are not intended to limit the protection scope of the present utility model.

[0031] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present utility model, and only the components related to the present utility model are shown in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component when actually implemented can be arbitrarily changed, and the layout pattern of the components can also be more complex.

[0032] The present application provides a liquid cooling radiator for new energy batteries, as shown in Figure 1 and Figure 2 The liquid cooling radiator for new energy batteries comprises a lower liquid cooling plate 2 and an upper liquid cooling plate 1. A flow channel 3 is arranged on the lower liquid cooling plate 2. The upper liquid cooling plate 1 is arranged above the lower liquid cooling plate 2 and covers the flow channel 3. The upper liquid cooling plate 1 and the lower liquid cooling plate 2 are both arranged upwardly bent on both sides to form a U-shaped accommodating space 10 for accommodating a new energy battery 100.

[0033] Specifically, the flow channel 3 is arranged on the lower liquid cooling plate 2, and the upper liquid cooling plate 1 is arranged above the lower liquid cooling plate 2, so that the upper liquid cooling plate 1 can cover the flow channel 3 after being assembled with the lower liquid cooling plate 2, thereby forming a sealed space between the lower liquid cooling plate 2 and the upper liquid cooling plate 1 to prevent the cooling liquid from leaking out.

[0034] The lower liquid cooling plate 2 and the upper liquid cooling plate 1 have the same appearance shape. The upper liquid cooling plate 1 and the lower liquid cooling plate 2 are both arranged upwardly bent on both sides to form a U-shaped accommodating space 10. The new energy battery 100 can be accommodated in the U-shaped accommodating space 10, so that the new energy battery 100 can be cooled by the upper liquid cooling plate 1 and the lower liquid cooling plate 2 on the side surface in addition to the bottom, thereby greatly improving the temperature uniformity and heat exchange efficiency of the new energy battery 100.

[0035] It can be understood that the flow channel 3 is not only distributed on the bottom of the lower liquid cooling plate 2, but also on the side of the lower liquid cooling plate 2 after bending, so that the bottom and the side of the new energy battery 100 can be cooled and heat-exchanged, and the heat-exchange efficiency is improved.

[0036] As shown in Figure 2 The new energy battery liquid cooling radiator further comprises an inlet 4 and an outlet 5; the inlet 4 is arranged on the bottom of the lower liquid cooling plate 2 and communicates with the flow channel 3; and the outlet 5 is arranged on the bottom of the lower liquid cooling plate 2 and communicates with the flow channel 3.

[0037] Specifically, the inlet 4 and the outlet 5 both communicate with the flow channel 3, so that the flow channel 3 is supplied with liquid through the inlet 4 and discharged through the outlet 5. The inlet 4 and the outlet 5 are both located on the bottom of the lower liquid cooling plate 2, so that the cooling liquid first passes through the bottom of the new energy battery liquid cooling radiator after entering the flow channel 3 from the inlet 4; the bottom of the new energy battery 100 is a high heat dissipation area, that is, the bottom of the new energy battery liquid cooling radiator is a high heat load area, so that the cooling liquid first passes through the high heat load area (that is, the cooling liquid with the lowest temperature first enters the high heat load area for heat exchange) after entering the flow channel 3 from the inlet 4, and then flows to the side and is finally discharged through the outlet 5, forming a smooth fluid circulation path, and further improving the heat exchange efficiency of the new energy battery liquid cooling radiator.

[0038] At the same time, arranging the inlet 4 and the outlet 5 on the bottom can effectively prevent the accumulation of bubbles in the flow channel 3; the cooling liquid can directly contact the heat source when entering from the bottom, instead of accumulating bubbles at a high place. The bottom design can help the gas flow outwards, avoiding the retention of gas inside, so as to avoid the influence of bubbles on the heat dissipation effect of the new energy battery liquid cooling radiator.

[0039] Moreover, arranging the inlet 4 and the outlet 5 on the bottom helps to optimize the temperature gradient of the cooling liquid; the cooling liquid first contacts the high temperature area after entering from the bottom, carries away heat and gradually cools down, and finally flows out from the outlet 5 on the bottom, which can ensure the continuous change of the liquid temperature and avoid the uneven mixing of hot liquid and cold liquid.

[0040] In an embodiment of the present application, the inlet 4 and the outlet 5 are located on the same side of the bottom of the lower liquid cooling plate 2.

[0041] Specifically, compared with the side of the lower liquid cooling plate 2, the bottom of the lower liquid cooling plate 2 bears a higher heat load; by arranging the liquid inlet 4 and the liquid outlet 5 on the same side of the bottom of the lower liquid cooling plate 2, the heat cooling liquid can maintain a relatively uniform flow, avoiding local heat accumulation or insufficient heat exchange.

[0042] The liquid inlet 4 and the liquid outlet 5 are located on the same side of the bottom of the lower liquid cooling plate 2 and close to each other, which can be more convenient for maintenance and detection, and technicians can directly detect and repair from one side, avoiding the trouble caused by multi-position layout and reducing the pressure difference caused by the asymmetric length of the flow channel 3. Arranging the liquid inlet 4 and the liquid outlet 5 on different sides of the lower liquid cooling plate 2 can cause a large pressure difference inside the liquid cooling plate, affecting the fluid flow efficiency and liquid cooling effect; arranging the liquid inlet 4 and the liquid outlet 5 on the same side of the bottom of the lower liquid cooling plate 2, especially close to each other, can maintain a relatively balanced pressure of the cooling liquid during the flow process, optimizing the fluid mechanics performance.

[0043] In an embodiment of the present application, as shown in Figure 3 and Figure 4 The flow channel 3 includes a spiral flow channel structure 31 and a linear flow channel structure 32; the spiral flow channel structure 31 is arranged at the bottom of the lower liquid cooling plate 2; and the linear flow channel structure 32 is arranged on both sides of the lower liquid cooling plate 2.

[0044] Specifically, the spiral flow channel structure 31 is in communication with the liquid inlet 4 and the liquid outlet 5, and the linear flow channel structure 32 is in communication with the spiral flow channel structure 31. The bottom of the new energy battery 100 is usually a heat-intensive area, especially when running or charging at high power, the bottom needs to bear a large amount of heat, which makes the heat dissipation requirement of the bottom more urgent than that of the side. In order to more effectively absorb these heat, arranging the spiral flow channel structure 31 at the bottom of the lower liquid cooling plate 2 can increase the contact time and contact area of the cooling liquid and the heat source, thereby enhancing the heat exchange efficiency; the spiral flow channel structure 31 increases the flow path, so that the cooling liquid stays at the bottom of the lower liquid cooling plate 2 for a longer time, which helps to improve the heat exchange efficiency, especially in the case of high heat load, the disturbance effect of the fluid can avoid the laminar mixing of hot liquid and cold liquid, increasing the overall heat dissipation effect.

[0045] The side of the new energy battery 100 is generally relatively low in heat and uniform in distribution, and thus the heat dissipation demand is not as high as that of the bottom. The linear flow channel structure 32 is more suitable for the side area, can realize uniform flow rate and relatively stable fluid behavior at low cost and complexity, and avoids overheating of the new energy battery 100 side. The linear flow channel structure 32 is simple in design, can ensure uniform heat conduction of the cooling liquid when flowing through the side of the lower liquid cooling plate 2, and reduces manufacturing difficulty and cost caused by complex flow channel 3 design.

[0046] Meanwhile, the side area of the lower liquid cooling plate 2 and the upper liquid cooling plate 1 is small, and the linear flow channel structure 32 can maximize the use of limited space and ensure that the cooling liquid flows directly and simply in the side area, thereby improving flow efficiency and reducing unnecessary complex design.

[0047] The linear flow channel structure 32 includes a plurality of linear flow channels arranged in parallel and side by side; each adjacent two linear flow channels 3 are connected to each other, so that the plurality of linear flow channels form parallel channels. The plurality of parallel linear flow channels can effectively reduce the flow resistance; the cooling liquid flows in parallel in the plurality of linear flow channels, and the flow rate of each linear flow channel can be relatively low, avoiding the increase of flow resistance caused by excessively high flow rate in a single flow channel, so that the overall flow resistance in the radiator is low, which helps to improve the flow efficiency of the cooling liquid.

[0048] In an embodiment of the present application, the thickness of the lower liquid cooling plate 2 is less than the thickness of the upper liquid cooling plate 1.

[0049] Specifically, the upper liquid cooling plate 1 needs to cooperate with the lower liquid cooling plate 2 to seal the flow channel 3 and prevent cooling liquid leakage; compared with the lower liquid cooling plate 2, the upper liquid cooling plate 1 has higher sealing requirements, and thus the upper liquid cooling plate 1 needs to be designed to be thicker to ensure stronger sealing performance.

[0050] The upper liquid cooling plate 1 also needs to bear the role of supporting the new energy battery 100 and bear greater mechanical load, and thus the upper liquid cooling plate 1 needs to have higher strength and rigidity to prevent deformation or damage. In the embodiment, the thickness of the upper liquid cooling plate 1 is increased, which helps to improve the structural strength of the upper liquid cooling plate 1 and ensure the stability and long-term reliability of the liquid cooling system. The lower liquid cooling plate 2 adopts a relatively small thickness to reduce the overall weight of the liquid cooling radiator for the new energy battery.

[0051] The lower liquid cooling plate 2 adopts a thin plate stamping or blow molding process, which greatly improves the process cost and efficiency, and also reduces the weight, thereby improving the efficiency and reducing the manufacturing cost.

[0052] In one embodiment of this application, the thickness of the lower liquid cooling plate 2 is 1mm to 1.5mm.

[0053] In one embodiment of this application, the thickness of the upper liquid cooling plate 1 is 1.2 mm to 2 mm.

[0054] like Figure 1 and Figure 2 As shown, the liquid-cooled heat sink for new energy batteries also includes multiple fixing blocks 6; the multiple fixing blocks 6 are disposed at the bend of the lower liquid-cooling plate 2 and are located on the side of the lower liquid-cooling plate 2 away from the upper liquid-cooling plate 1.

[0055] Specifically, the fixing block 6 fixes the bent part of the lower liquid cooling plate 2 from the side opposite to the upper liquid cooling plate 1 to ensure the stability of the U-shaped structure formed after the side of the lower liquid cooling plate 2 is bent, thereby improving the stability of the U-shaped accommodating space 10, making the U-shaped accommodating space 10 less prone to deformation, and able to maintain contact with the side and bottom of the new energy battery 100 for a longer period of time, thereby improving the heat exchange efficiency and the temperature uniformity of the new energy battery 100.

[0056] The fixing block 6 is an L-shaped fixing block; one end of the fixing block 6 is attached to the side of the lower liquid cooling plate 2, and the other end is attached to the bottom of the lower liquid cooling plate 2.

[0057] In summary, this application provides a liquid-cooled heat sink for new energy batteries, comprising: a lower liquid-cooling plate; a flow channel provided on the lower liquid-cooling plate; an upper liquid-cooling plate disposed above the lower liquid-cooling plate and obscuring the flow channel; both sides of the upper and lower liquid-cooling plates are bent upwards to form a U-shaped receiving space, which is used to accommodate the new energy battery. In this application, the new energy battery can be accommodated within the U-shaped receiving space, allowing the battery to not only contact the upper liquid-cooling plate for heat dissipation and cooling at its bottom, but also to have its sides enhanced by heat dissipation through the sides of the upper and lower liquid-cooling plates, thus significantly improving the temperature uniformity and heat exchange efficiency of the new energy battery.

[0058] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A liquid-cooled heat sink for new energy batteries, characterized in that, It includes: Lower liquid cooling plate; the lower liquid cooling plate is provided with flow channels; An upper liquid cooling plate is disposed above the lower liquid cooling plate and blocks the flow channel; Both sides of the upper liquid cooling plate and the lower liquid cooling plate are bent upwards to form a U-shaped receiving space, which is used to accommodate new energy batteries.

2. The liquid-cooled heat sink for new energy batteries according to claim 1, characterized in that, It also includes: The liquid inlet is located at the bottom of the lower liquid cooling plate and communicates with the flow channel; The liquid outlet is located at the bottom of the lower liquid cooling plate and is connected to the flow channel.

3. The liquid-cooled heat sink for new energy batteries according to claim 2, characterized in that, The liquid inlet and the liquid outlet are located on the same side of the bottom of the lower liquid cooling plate.

4. The liquid-cooled heat sink for new energy batteries according to claim 1, characterized in that, The flow channel includes: A spiral flow channel structure is provided at the bottom of the lower liquid cooling plate; A straight flow channel structure is provided on both sides of the lower liquid cooling plate.

5. The liquid-cooled heat sink for new energy batteries according to claim 4, characterized in that, The straight flow channel structure includes: Multiple straight flow channels are arranged in parallel and side by side; each pair of adjacent straight flow channels are interconnected so that the multiple straight flow channels form a parallel path.

6. The liquid-cooled heat sink for new energy batteries according to claim 1, characterized in that, The thickness of the lower liquid cooling plate is less than the thickness of the upper liquid cooling plate.

7. The liquid-cooled heat sink for new energy batteries according to claim 1, characterized in that, The thickness of the lower liquid cooling plate is 1mm to 1.5mm.

8. The liquid-cooled heat sink for new energy batteries according to claim 1, characterized in that, The thickness of the upper liquid cooling plate is 1.2mm to 2mm.

9. The liquid-cooled heat sink for new energy batteries according to claim 1, characterized in that, It also includes: Multiple fixing blocks are disposed at the bend of the lower liquid cooling plate and located on the side of the lower liquid cooling plate away from the upper liquid cooling plate.

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