Radiator structure of heat dissipation waterway and energy storage battery liquid cooling plate

Abstract

The utility model provides a radiator structure of a heat dissipation water path and an energy storage battery liquid cooling plate, the radiator structure of the heat dissipation water path is used for being arranged in a cooling tank, and the radiator structure comprises a heat dissipation bottom plate arranged on the bottom surface of the cooling tank; the multiple heat dissipation supporting parts are vertically arranged on the heat dissipation bottom plate at intervals, a cooling water channel is formed between every two adjacent heat dissipation supporting parts, and the cooling water channels extend in the flow guide direction; and the heat dissipation top plate is arranged at the top ends of the heat dissipation supporting parts and covers the cooling water channel. The problem of low efficiency caused by limited heat conduction area of a heat transfer fin in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of new energy battery technology, and in particular to a radiator structure for a heat dissipation water channel and a liquid cooling plate for an energy storage battery. Background Technology

[0002] Energy storage batteries are an important component of various outdoor electrical devices, such as electric vehicles. High-voltage power batteries generate a large amount of heat during operation. Therefore, a good heat dissipation system is crucial to ensuring the charging and discharging performance and lifespan of the power battery. Among the heat dissipation methods for energy storage batteries, liquid cooling plates are a key component of the thermal management system.

[0003] Existing liquid cooling plate structures typically employ heat sinks with heat transfer fins for heat conduction. These fins usually consist of a substrate and fins arranged side-by-side on it, with channels between the fins to allow the coolant to flow through and contact the surfaces of the fins and substrate, thus carrying away heat and achieving heat dissipation. However, heat sink structures using only a substrate and fins still have a limited effective heat conduction area, resulting in low efficiency.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a heat sink structure for a heat dissipation water channel and a liquid cooling plate for an energy storage battery, which solves the problem of low efficiency caused by the limited heat conduction area of ​​the heat transfer fins in the prior art.

[0006] On the one hand, this application provides a radiator structure for a heat dissipation water channel, which is used to install in a cooling tank, wherein the radiator structure includes: a heat dissipation base plate, which is installed on the bottom surface of the cooling tank;

[0007] Multiple heat dissipation support parts are vertically arranged at intervals on the heat dissipation base plate, and a cooling water channel is formed between two adjacent heat dissipation support parts. The cooling water channel extends along the flow direction.

[0008] A heat dissipation top plate is set on top of multiple heat dissipation supports and covers the cooling water channels.

[0009] Optionally, the heat dissipation support includes a plurality of heat sinks, which are spaced apart along the extension direction of the airflow direction.

[0010] Optionally, the heat dissipation support includes a heat dissipation plate, which extends continuously along the airflow direction.

[0011] Optionally, the heat dissipation support is bent along the airflow direction.

[0012] Optionally, the curved heat dissipation support includes at least one first waveform;

[0013] The first waveform has a crest half-arc and a trough half-arc, and the amplitudes of the crest half-arc and the trough half-arc are equal.

[0014] Optionally, the heat dissipation top plate is bent into a second waveform in the arrangement direction of the multiple heat dissipation supports.

[0015] Optionally, the heat dissipation support is located at the peak or trough of the second waveform.

[0016] Optionally, a heat-conducting protrusion is provided on the heat dissipation support.

[0017] Optionally, the heat-conducting protrusion is a semi-circular boss.

[0018] On the other hand, this application also proposes a liquid cooling plate for an energy storage battery, including: a liquid cooling plate body, wherein a cooling groove is formed in the liquid cooling plate body.

[0019] And the radiator structure of the cooling water channel as described above;

[0020] The radiator structure is installed inside the cooling tank.

[0021] Beneficial Effects: The radiator structure and liquid cooling plate for a storage battery in this application utilize multiple vertically arranged heat dissipation support parts on a heat dissipation base plate, spaced apart from each other, thus forming cooling channels between adjacent support parts. This creates multiple cooling channels within the cooling tank. A heat dissipation top plate is connected to the top of each support part, covering the cooling channels. As the coolant flows within the channels, heat is conducted not only through the surface of the heat dissipation base plate and the sides of the support parts, but also through contact with the coolant on the inner surface of the top plate. This increases the heat conduction area, allowing for more efficient heat transfer and thus removing more heat, improving heat dissipation efficiency. Attached Figure Description

[0022] Figure 1 This is a partial exploded view of the main structure of a liquid cooling plate for an energy storage battery according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the internal structure of the main structure of a liquid cooling plate for an energy storage battery according to an embodiment of this application;

[0024] Figure 3 This is a partial exploded view of a radiator structure for a cooling water channel according to an embodiment of this application.

[0025] Figure 4 This is a partial structural diagram of another structure of a radiator structure for a cooling water channel according to an embodiment of this application;

[0026] Figure 5 This is a front view of the heat dissipation support portion of a heat dissipation water channel structure according to an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of another structure of the radiator structure of a heat dissipation water channel according to an embodiment of this application.

[0028] In the diagram: 10, radiator structure; 20, liquid cooling plate; 21, cooling groove; 30, outer cover plate; 100, heat dissipation base plate; 200, heat dissipation support; 201, heat dissipation fins; 202, heat dissipation strips; 203, gap; 210, cooling water channel; 220, first waveform; 221, peak semi-arc; 222, trough semi-arc; 230, heat-conducting protrusion; 300, heat dissipation top plate; 310, second waveform; 311, arched arc. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer and more explicit, the following detailed description of this application is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0030] Example 1

[0031] like Figure 1 As shown, this embodiment proposes a radiator structure 10 for a heat dissipation water channel, which can be used in the cooling tank 21 within the liquid cooling plate of the energy storage battery to dissipate heat from the energy storage battery module, thereby ensuring that the energy storage battery module does not overheat during use and guaranteeing the high performance and safety of the energy storage battery module during use. Figure 1 , Figure 2As shown, this energy storage battery liquid cooling plate mainly includes: a heat dissipation base plate 100, multiple heat dissipation support parts 200, and a heat dissipation top plate 300. The heat dissipation base plate 100 is disposed on the bottom surface of the cooling tank 21. The heat dissipation base plate 100 can be a flat plate, so that the heat dissipation base plate 100 and the bottom surface of the cooling tank 21 can be in full contact. The large contact area allows the external heat of the energy storage battery liquid cooling plate to be fully conducted to the internal heat sink structure 10. Multiple heat dissipation support parts 200 are vertically fixedly disposed on the heat dissipation base plate 100 at intervals, and the extension direction of each heat dissipation support part 200 is the airflow direction. For the convenience of structural description, the structure is described using the airflow direction as the front-to-back direction and the side-by-side arrangement of the multiple heat dissipation support parts 200 as the left-to-right direction. A cooling water channel 210 is formed between two adjacent heat dissipation support parts 200. Therefore, the cooling water channel 210 extends along the airflow direction. The heat dissipation top plate 300 is disposed on the top of the multiple heat dissipation support parts 200 and covers the cooling water channel 210. When the coolant flows inside the liquid cooling plate of the energy storage battery, it is guided by the cooling water channel 210, thereby making full contact with the heat sink 201. The heat sink structure 10 has good thermal conductivity, which can conduct the heat generated by the energy storage battery transferred on the liquid cooling plate of the energy storage battery in a timely manner, and then carry away the heat through the flowing coolant, thereby achieving efficient heat dissipation.

[0032] like Figure 1 , Figure 2 As shown, the radiator structure 10 of the cooling water channel in this embodiment has multiple cooling support parts 200 vertically arranged on the cooling base plate 100. The multiple cooling support parts 200 are spaced apart on the cooling base plate 100, so that cooling water channels 210 are formed between two adjacent cooling support parts 200. In this way, multiple cooling water channels 210 are formed in the cooling tank, and a cooling top plate 300 is connected to the top of the multiple cooling support parts 200, so that the cooling top plate 300 covers the multiple cooling water channels 210. In this way, when the coolant flows in the cooling water channels 210, heat is conducted not only through the surface of the cooling base plate 100 and the sides of the cooling support parts 200, but also through the inner surface of the cooling top plate 300, which also contacts the coolant to achieve heat conduction. By setting the cooling top plate 300, the heat conduction area is increased, allowing the coolant to conduct heat more fully, thereby removing more heat and improving the heat dissipation efficiency.

[0033] The entire radiator structure 10 is made of a metal material with high thermal conductivity, achieving excellent heat dissipation performance. The metal heat dissipation material cools the battery pack by conducting heat from the high-temperature area outside the battery liquid cooling plate to the internal coolant. The heat dissipation material directly affects the heat dissipation efficiency and service life of the radiator. In this embodiment, the radiator is made of aluminum alloy or stainless steel. Aluminum alloy is one of the most commonly used heat dissipation materials, with excellent thermal conductivity and good corrosion resistance. In addition, aluminum alloy can be processed into radiator plates through various manufacturing processes, forming good heat conduction paths in the channels inside the radiator and improving the heat dissipation effect. Stainless steel is a material with very good corrosion resistance, suitable for high-humidity working environments. Stainless steel radiators are used in special environments such as the chemical industry, marine industry, and food industry due to their strong resistance to corrosion and pollution. This embodiment preferentially uses an aluminum alloy radiator, which can be directly extruded, resulting in high production efficiency, reduced production difficulty, and lower production costs.

[0034] The heat dissipation support 200 in this embodiment can adopt various structures:

[0035] like Figure 2 , Figure 3 As shown, in the first structure, the heat dissipation support 200 specifically includes: a plurality of heat sinks 201, which are spaced apart along the extension direction of the airflow direction. That is, in the length direction, the plurality of heat sinks 201 are arranged in a row, and a gap 203 is formed between the heat sinks 201 at a small distance. For example, in the length direction, the length of the gap 203 between adjacent heat sinks 201 is 1 / 8 or less of the length of the heat sink 201. Using a relatively small gap 203 can reduce the material of the entire heat dissipation support 200 and save costs. Secondly, the relatively small gap, relative to the overall heat dissipation support 200, allows a small amount of coolant to enter other cooling channels 210 during the flow process. This enables partial mixing of coolant during the flow guidance process, reducing the temperature difference between coolants of different temperatures in different channels and making the coolant temperature more uniform. As a result, when the coolant flows through the battery pack area with a higher heat generation temperature, the uniformly heated coolant can carry away the heat from that area more evenly, thus achieving a uniform cooling effect on the battery pack.

[0036] like Figure 2 , Figure 4As shown, in the second structure, the heat dissipation support 200 specifically includes a heat dissipation plate 202, which extends continuously along the airflow direction. Specifically, the heat dissipation plate 202 is elongated, extending uninterruptedly along its length, thus separating the multiple internal cooling channels 210 from each other. Coolant flows within each cooling channel 210 to conduct heat. This continuous cooling channel 210 structure lengthens the heat exchange area of ​​the cooling channels 210, resulting in a more traditional heat dissipation effect.

[0037] like Figure 2 , Figure 3 , Figure 5 As shown, based on the above two structures of heat dissipation support 200, the heat dissipation support 200 of this embodiment can be arranged in a straight line or in a curved manner along the flow direction. In the case of a curved arrangement, that is, the shape of the multiple heat sinks 201 arranged in a curved shape, or the heat dissipation strip 202 is curved, by setting the heat dissipation support 200 as a curved structure, the left and right sides of the heat dissipation support 200 are curved surfaces. With the entire length of the cooling tank being fixed, the curved heat dissipation support 200 makes the cooling water channel 210 bend, thus increasing the contact area on the left and right sides of the heat dissipation support 200. When the coolant flows in the cooling water channel 210, it achieves contact heat conduction along the curved sidewalls, thereby further increasing the contact area between the radiator and the coolant. The coolant can carry away more heat, making the heat conduction more sufficient and enhancing the heat dissipation performance.

[0038] The curved heat dissipation support 200 of this embodiment includes at least one first waveform 220. Depending on the actual length of the radiator structure 10, the heat dissipation support 200 may use only one first waveform 220, or the heat dissipation support 200 may form multiple consecutive first waveforms 220. When only one first waveform 220 is used, the bending length of the first waveform 220 is relatively long, and the bending amplitude is relatively small. This prevents the formed cooling water channel 210 from being too bent, thus avoiding excessive water resistance. When multiple first waveforms 220 are used, the bending length of each first waveform 220 is relatively short, and the bending amplitude is relatively large. Because it is longer in the length direction, even if a first waveform 220 with a slightly larger bending amplitude is provided, the heat conduction area is increased without causing excessive water resistance.

[0039] like Figure 3 , Figure 5As shown, the first waveform 220 has a crest half-arc 221 and a trough half-arc 222, with equal amplitudes. Specifically, the first waveform 220 has a centerline extending in the front-to-back direction. The crest half-arc 221 and trough half-arc 222 are located on the left and right sides of the centerline, forming an S-shape. Multiple S-shaped first waveforms 220 are sequentially connected along the centerline to form a curved heat dissipation support 200. Since the crest half-arc 221 and trough half-arc 222 have equal wavelengths and amplitudes, the cooling water channel 210 formed by this curved heat dissipation support 200 has a consistent inner width, resulting in a more uniform coolant flow, better heat dissipation uniformity, and improved heat dissipation stability and smoothness.

[0040] like Figure 2 , Figure 6 As shown, further, the heat dissipation top plate 300 in this embodiment can be configured as a flat plate. Alternatively, the heat dissipation top plate 300 can be bent into a second waveform 310 in the arrangement direction of the multiple heat dissipation support parts 200. Since the multiple heat dissipation support parts 200 are arranged in the left-right direction, the heat dissipation top plate 300 is configured into a second waveform 310 in the left-right direction. Therefore, the two sides of the heat dissipation top plate 300 in the up-down direction are curved. Thus, with the length of the entire cooling tank fixed, the curved heat dissipation top plate 300 makes the upper surface of the cooling water channel 210 bend, which increases the contact area of ​​the inner surface of the heat dissipation top plate 300 (the surface facing the cooling water channel 210). When the coolant flows in the cooling water channel 210, it achieves contact heat conduction along the curved top wall, thereby further increasing the contact area between the radiator and the coolant, and the coolant can carry away more heat. In the specific structure, the first type of second waveform 310 structure has multiple arched arcs 311 with equal wavelength and amplitude. The multiple arched arcs 311 are arranged side by side, thus forming multiple shaped structures. Alternatively, the second waveform 310 has peaks and troughs with equal wavelength and amplitude. The second waveform 310 has a centerline extending laterally. The peaks and troughs are located on the upper and lower sides of the centerline, forming an S-shape. Multiple S-shaped second waveforms 310 are sequentially connected along the centerline to obtain a curved heat dissipation top plate 300. The cooling channels 210 formed by this curved heat dissipation top plate 300 have a consistent curvature at the top, resulting in a more uniform coolant flow, better heat dissipation uniformity, and improved heat dissipation stability and smoothness.

[0041] like Figure 6As shown, in this embodiment, the heat dissipation support 200 is located at the crest or trough of the second waveform 310. By supporting the crest or trough with the heat dissipation support 200, the support stability of the heat dissipation support 200 on the heat dissipation top plate 300 is improved. In particular, the arched structure formed by the crest can contact the outer cover plate 30 of the energy storage battery liquid cooling plate, thus providing good support for the outer cover plate 30 of the energy storage battery liquid cooling plate, improving the load-bearing capacity of the entire energy storage battery liquid cooling plate, increasing structural strength, and making it sturdy and durable.

[0042] like Figure 5 As shown, in this embodiment, a heat-conducting protrusion 230 is further provided on the heat dissipation support 200. The heat-conducting protrusion 230 further increases the side surface area of ​​the heat dissipation support 200, and with the increase in heat-conducting area, the heat conduction performance of the heat sink is also improved.

[0043] Furthermore, the heat-conducting protrusion 230 in this embodiment can also be configured in various structures, such as a ridge or a boss. If a ridge is used, it extends along the flow direction and is disposed on the side wall of the heat dissipation support 200. If a boss is used, a semi-circular boss is adopted.

[0044] Example 2

[0045] like Figure 1 , Figure 2 As shown, this embodiment proposes a liquid cooling plate for an energy storage battery, including: a liquid cooling plate body 20, an outer cover plate 30, and a radiator structure 10 with a heat dissipation water channel as described above. The liquid cooling plate body 20 has a cooling groove inside. The outer cover plate 30 is detachably connected to the liquid cooling base plate. When the outer cover plate 30 is fixed to the liquid cooling base plate, it can cover the cooling groove, thereby closing the open side of the cooling groove to form a water channel. The radiator structure 10 is installed inside the cooling groove. The radiator structure 10 used in this embodiment has good thermal performance. By adding a heat dissipation top plate 300 and improving the shape of the heat dissipation top plate 300 and the shape of the heat dissipation support 200, the heat dissipation area can be increased, and the flow distance of the internal cooling water channel 210 of the radiator can be improved, thereby achieving efficient heat dissipation of the battery pack.

[0046] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A radiator structure for a heat dissipation water channel, used for installation within a cooling tank, characterized in that, The radiator structure includes: a heat dissipation base plate, which is disposed on the bottom surface of the cooling tank; Multiple heat dissipation support parts are vertically arranged at intervals on the heat dissipation base plate, and a cooling water channel is formed between two adjacent heat dissipation support parts, and the cooling water channel extends along the flow direction. A heat dissipation top plate is disposed on top of the plurality of heat dissipation supports and covers the cooling water channels.

2. The radiator structure of the cooling water channel according to claim 1, characterized in that, The heat dissipation support includes a plurality of heat sinks, which are spaced apart along the extension direction of the airflow direction.

3. The radiator structure of the cooling water channel according to claim 1, characterized in that, The heat dissipation support includes a heat dissipation strip, which extends continuously along the airflow direction.

4. The radiator structure of the cooling water channel according to any one of claims 1-3, characterized in that, The heat dissipation support is bent along the airflow direction.

5. The radiator structure of the cooling water channel according to claim 4, characterized in that, The curved heat dissipation support includes at least one first waveform; The first waveform has a crest half-arc and a trough half-arc, and the amplitudes of the crest half-arc and the trough half-arc are equal.

6. The radiator structure of the cooling water channel according to any one of claims 1-3, characterized in that, The heat dissipation top plate is bent into a second waveform in the arrangement direction of the plurality of heat dissipation supports.

7. The radiator structure of the cooling water channel according to claim 6, characterized in that, The heat dissipation support is located at the peak or trough of the second waveform.

8. The radiator structure of the cooling water channel according to claim 1, characterized in that, The heat dissipation support is provided with a heat-conducting protrusion.

9. The radiator structure of the cooling water channel according to claim 8, characterized in that, The heat-conducting protrusion is a semi-circular boss.

10. A liquid cooling plate for an energy storage battery, characterized in that, include: The liquid-cooled plate body has cooling grooves formed inside it. And the radiator structure of the cooling water channel as described in any one of claims 1-9; The radiator structure is installed inside the cooling tank.

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