Novel liquid cooling plate flow equalizing and heat dissipating device

Abstract

The utility model relates to a novel liquid cooling plate flow equalizing heat dissipation device, which comprises a main flow channel plate, a first flow collecting area and a second flow collecting area, the first flow collecting area and the second flow collecting area are positioned on two sides of the main flow channel plate, a water inlet area and a water outlet area which are mutually separated are arranged in the first flow collecting area, and liquid passing pipes which are uniformly distributed and mutually separated are arranged in the main flow channel plate. The two ends of the liquid passing pipe communicate with the first flow collecting area and the second flow collecting area through evenly-formed flow equalizing holes correspondingly. According to the scheme of the utility model, the uniformity of liquid flow is realized through the flow collecting areas at the left end and the right end and the flow equalizing holes in the main runner plate without changing the size and the length of the liquid passing pipe in the main runner plate, so that the temperature rise and the temperature difference of a battery pack are reduced, and the heat dissipation performance of the liquid cooling plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation, in particular to a novel liquid cooling plate flow-sharing heat dissipation device. Background Art

[0002] Battery energy storage thermal management comes in various forms. The air cooling system has low heat dissipation efficiency, poor temperature difference control, and large floor space, and its application scope is relatively limited. As the scale and energy density of battery energy storage projects continue to increase, the shortcomings of the air cooling system in heat dissipation efficiency will gradually become apparent. The liquid cooling system has strong heat dissipation capacity and low life cycle cost, and is expected to become a future development trend.

[0003] Since the heat transfer coefficient and specific heat capacity of the coolant are higher and are not affected by factors such as altitude and air pressure, the liquid cooling system has a stronger heat dissipation capacity than the air cooling system, and is therefore more adaptable to the development trend of large-scale, high-energy-density battery energy storage projects. Temperature has a great influence on the performance and consistency of the battery cell. The temperature difference will affect the DC internal resistance, and there will be differences in the heat generation consistency. The charge and discharge capacity is different at different temperatures. When the temperature difference increases, the charge and discharge rate is limited.

[0004] The existing technology needs to achieve flow balance by adjusting the width of the liquid cooling plate flow channel. The change in the width of the flow channel makes processing difficult and may even easily damage the liquid cooling plate. Moreover, simple flow channel changes often cannot achieve flow balance and may even cause flow field turbulence, which seriously aggravates the flow non-uniformity, resulting in poor heat dissipation effect and further increase in temperature rise and temperature difference. Utility Model Content

[0005] The purpose of the utility model is to provide a novel liquid cooling plate flow-sharing heat dissipation device to solve the problems encountered in the above-mentioned background technology.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A novel liquid cooling plate flow equalizing heat dissipation device comprises a main flow channel plate and a first collecting area and a second collecting area located on both sides of the main flow channel plate, wherein the first collecting area is provided with a water inlet area and a water outlet area which are separated from each other, and the main flow channel plate is provided with liquid passages which are evenly distributed and isolated from each other, and the two ends of the liquid passages are respectively connected to the first collecting area and the second collecting area through evenly arranged flow equalizing holes.

[0008] In the above scheme, a first collecting pipe is provided in the water inlet area, and the outer side of the first collecting pipe is connected to the water inlet pipe; a second collecting pipe is provided in the water outlet area, and the outer side of the second collecting pipe is connected to the water outlet pipe; one side of the interior of the second collecting area is used for water inlet, and the other side is used for water outlet, and the liquid is collected and mixed inside the second collecting area.

[0009] A collecting cavity is provided inside the first collecting pipe, inside the second collecting pipe, and inside the second collecting area. A flow equalizing hole connected to the collecting cavity is provided on the inner side of the first collecting pipe, inside the second collecting pipe, and inside the second collecting area. As a preferred solution, a chamfer is provided at the corner of the collecting cavity, and the range of the chamfer is between R2mm-R5mm. In addition, the liquid passage tubes are evenly arranged in parallel in the main channel plate, and chamfers are provided at the corners of the liquid passage tubes. There are multiple groups of flow equalizing holes, and each group is provided with at least two. During implementation, the aperture of the flow equalizing hole is between Φ3-Φ10, and the width of the liquid passage tube is between 10-30mm.

[0010] In one of the embodiments, a new type of liquid cooling plate flow equalization heat dissipation device, in addition to the main flow channel plate, the first collecting area, and the second collecting area, also includes a fixing frame, the fixing frame is a frame structure, and the whole is in the shape of a "sun"; the fixing frame is fixed at the connection between the main flow channel plate and the first collecting area and the second collecting area.

[0011] In the above scheme, the inner upper and lower parts of the first and second flow collecting areas are respectively provided with slots that match the edges of the fixing frame. As a preferred scheme, the main flow channel plate is provided with bayonet holes on both sides, and the main flow channel plate is connected to the mounting plate through the bayonet holes; a protruding block is provided in the middle of one end of the main flow channel plate, and the block separates the water inlet area from the water outlet area.

[0012] In addition, the top of the first current collecting area, the top of the second current collecting area, and the middle top of the main channel plate are respectively provided with positioning blocks fixed to the battery, and the positioning blocks are provided with grooves for fixing the battery.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention achieves uniformity of liquid flow through the flow collecting areas at the left and right ends and the arrangement of the flow equalizing holes arranged inside, without changing the size and length of the liquid passing pipe in the main channel plate, thereby reducing the temperature rise and temperature difference of the battery pack and improving the heat dissipation performance of the liquid cooling plate. Therefore, the present liquid cooling plate has multiple groups of uniform flow equalizing holes connected to the flow collecting pipe area, which effectively improves the heat dissipation efficiency of the energy storage battery system, reduces the temperature difference of the system, and increases the service life of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2It is a schematic diagram of the partial structure on the right side of the utility model;

[0017] Figure 3 It is a schematic diagram of the partial structure on the left side of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the main runner plate in the utility model;

[0019] Figure 5 It is a structural schematic diagram of the second current collecting area in the utility model;

[0020] Figure 6 This is a schematic diagram of the internal structure of the equalizing flow hole in the utility model;

[0021] Figure 7 It is a schematic diagram of the bottom structure of the utility model.

[0022] Numbers in the figure: 1-fixed frame; 11-positioning block; 12-mounting plate; 2-first collecting area; 21-first collecting pipe; 22-second collecting pipe; 23-water inlet pipe; 24-water outlet pipe; 3-second collecting area; 31-collecting cavity; 32-flow balancing hole; 33-slot; 4-main channel plate; 41-liquid passage pipe; 42-bayonet; 43-block. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the relevant components of the utility model.

[0024] According to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0025] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] Embodiment 1, as Figure 1 , Figure 6 and Figure 7 As shown, a novel liquid cooling plate uniform flow heat dissipation device includes a main channel plate 4 and a first collecting area 2 and a second collecting area 3 located on both sides of the main channel plate 4. The main channel plate 4 is a long plate-shaped structure with parallel liquid flow channels opened inside.

[0027] The first collecting area 2 is provided with a water inlet area and a water outlet area which are separated from each other for water inlet and water outlet.

[0028] For details, please refer to Figure 2 and Figure 3 A first header 21 is provided in the water inlet area, and an inlet pipe 23 is connected to the outside of the first header 21 for conveying coolant. A second header 22 is provided in the water outlet area, and an outlet pipe 24 is connected to the outside of the second header 22 for conveying the coolant after heat exchange.

[0029] For the other side of the main channel plate 4, one side of the interior of the second collecting area 3 is used for water inlet and the other side is used for water outlet. The liquid is collected and mixed inside the second collecting area 3, which plays a transfer role. The second collecting area 3 is located on the side and can naturally dissipate part of the temperature from the side.

[0030] In this solution, the main channel plate 4 is provided with evenly distributed and mutually isolated liquid passages 41, and both ends of the liquid passages 41 are connected to the first flow collecting area 2 and the second flow collecting area 3 respectively through evenly arranged flow equalizing holes 32, thereby achieving flow equalization.

[0031] Example 2, based on Example 1, a new type of liquid cooling plate flow equalization heat dissipation device, please refer to Figure 5 A collecting cavity 31 is provided inside the first collecting tube 21, inside the second collecting tube 22, and inside the second collecting area 3. A flow equalizing hole 32 connected to the collecting cavity 31 is provided on the inner side of the first collecting tube 21, the inner side of the second collecting tube 22, and the inner side of the second collecting area 3. The flow equalizing hole 32 is used for transporting liquid.

[0032] As a preferred solution, a chamfer is provided at the angle of each manifold 31, and the range of the chamfer is between R2mm-R5mm, which is used to reduce fluid resistance, increase flow channel flow velocity, and improve heat dissipation performance.

[0033] In addition, the liquid pipes 41 are evenly arranged in parallel in the main channel plate 4, and chamfers are also provided at the angles of the liquid pipes 41, and the chamfer range is between R1mm-R3mm, which is used to reduce fluid resistance, increase the flow velocity of the flow channel, and improve the heat dissipation performance. The liquid pipes 41 between two adjacent ones are not connected to each other to ensure a good circulation cooling effect. There are multiple groups of equal flow holes 32, each group is provided with at least two, and the liquid fluid is evenly transported through the multiple groups of equal flow holes 32.

[0034] In implementation, the diameter of the flow-balancing holes 32 is between Φ3 and Φ10, and the number of holes corresponding to the flow channel of each group of flow-balancing holes 32 is 3-5, so as to improve the good liquid flow-balancing performance. The width of the liquid-passing tube 41 is between 10 and 100 mm. In implementation, the width of the liquid-passing tube 41 should be between 10 and 30 mm, which can be used as the base of the battery or have a size similar to that of the base.

[0035] Example 3, please refer to Figure 1 On the basis of Example 1, a new type of liquid cooling plate flow equalization heat dissipation device includes a main channel plate 4 and a first collecting area 2 and a second collecting area 3 located on both sides of the main channel plate 4. In this scheme, it also includes a fixing frame 1, which is a frame structure and is in the shape of a "sun" as a whole.

[0036] The fixing frame 1 is affixed and fixed to the connection between the main channel plate 4 and the first collecting area 2 and the second collecting area 3, and the connection between the main channel plate 4 and the first collecting area 2 and the second collecting area 3 is fixed together. Of course, the three can also be fixed together by screws, and the upper and lower surfaces of the liquid cooling plate are flush.

[0037] In order to cooperate with the fixing frame 1 for fixation, the inner upper and lower parts of the first collecting area 2 and the second collecting area 3 are respectively provided with card grooves 33 that match the edges of the fixing frame 1, providing avoidance space for the edges of the fixing frame 1, so that the fixing frame 1 can be flush with the tops of the first collecting area 2 and the second collecting area 3 after being fixed.

[0038] See also Figure 4 The main channel plate 4 has bayonet holes 42 on both sides thereof, and the main channel plate 4 is connected to the mounting plate 12 through the bayonet holes 42. The liquid cooling plate can be fixed on the battery mounting base or in the battery fixing housing by the mounting plate 12 and the bolts. A protruding block 43 is provided in the middle of one end of the main channel plate 4, and the block 43 separates the water inlet area from the water outlet area, and acts as a partition.

[0039] The top of the first collecting area 2, the top of the second collecting area 3, and the middle top of the main channel plate 4 are respectively provided with positioning blocks 11 fixed to the batteries. The inner side of the positioning blocks 11 is provided with grooves for clamping the energy storage batteries so that they are stably installed on the top of the liquid cooling plate.

[0040] In summary, when the solution of the utility model is implemented, the size and length of the liquid pipe 41 in the main channel plate 4 are not changed, and the uniformity of the liquid flow is achieved through the arrangement of the collecting areas at the left and right ends and the equalizing holes 32 arranged inside, thereby reducing the temperature rise and temperature difference of the battery pack and improving the heat dissipation performance of the liquid cooling plate. Therefore, the liquid cooling plate is provided with multiple groups of uniform equalizing holes 32 connected to the collecting pipe area, which effectively improves the heat dissipation efficiency of the energy storage battery system, reduces the temperature difference of the system, and increases the service life of the battery cell.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. These undisclosed elements are all prior art that can be known to those skilled in the art.

[0042] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A new type of liquid cooling plate flow-sharing heat dissipation device, characterized in that: It includes a main runner plate (4), a first flow collection area (2) and a second flow collection area (3) located on both sides of the main runner plate (4). In the first flow collection area (2), there are a water inlet area and a water outlet area which are separated from each other. In the main runner plate (4), there are evenly distributed and mutually isolated liquid conduction pipes (41), and both ends of the liquid conduction pipes (41) are communicated with the first flow collection area (2) and the second flow collection area (3) respectively through evenly arranged flow equalizing holes (32).

2. According to claim 1, a new type of liquid cooling plate flow-balanced heat dissipation device is characterized in that: In the water inlet area, there is a first flow collection pipe (21), and a water inlet pipe (23) is connected to the outside of the first flow collection pipe (21); in the water outlet area, there is a second flow collection pipe (22), and a water outlet pipe (24) is connected to the outside of the second flow collection pipe (22); one side inside the second flow collection area (3) is for water inlet, and the other side is for water outlet, and the liquid is collected and mixed inside the second flow collection area (3).

3. According to claim 2, a new type of liquid cooling plate flow-balanced heat dissipation device is characterized in that: Flow collection cavities (31) are opened inside the first flow collection pipe (21), the second flow collection pipe (22), and the second flow collection area (3), and flow equalizing holes (32) communicating with the flow collection cavities (31) are opened on the inner sides of the first flow collection pipe (21), the second flow collection pipe (22), and the second flow collection area (3).

4. According to claim 3, the novel liquid cooling plate flow-balanced heat dissipation device is characterized in that: At the included angle of the flow collection cavity (31), there is a chamfer, and the range of the chamfer is between R2mm - R5mm.

5. According to claim 1, the novel liquid cooling plate flow-sharing heat dissipation device is characterized in that: The liquid conduction pipes (41) are evenly arranged side by side in the main runner plate (4), and chamfers are provided at the included angles of the liquid conduction pipes (41); there are multiple groups of the flow equalizing holes (32), and each group has at least two.

6. A new type of liquid cooling plate flow-balanced heat dissipation device according to claim 5, characterized in that: The aperture of the flow equalizing hole (32) is between Φ3 - Φ10, and the width of the liquid conduction pipe (41) is between 10 - 30mm.

7. The novel liquid cooling plate flow-sharing heat dissipation device according to claim 1 is characterized in that: It further includes a fixing frame (1), and the fixing frame (1) is of a frame structure and is in an overall "day" shape; the fixing frame (1) is fixed at the connection positions of the main runner plate (4), the first flow collection area (2), and the second flow collection area (3).

8. The novel liquid cooling plate flow-balanced heat dissipation device according to claim 7 is characterized in that: At the upper and lower parts of the inner sides of the first flow collection area (2) and the second flow collection area (3), there are clamping grooves (33) that match the edges of the fixing frame (1).

9. The novel liquid cooling plate flow-balanced heat dissipation device according to claim 1 is characterized in that: On both sides of the main runner plate (4), there are bayonets (42), and the main runner plate (4) is clamped with a mounting plate (12) through the bayonets (42); in the middle of one end of the main runner plate (4), there is a protruding clamping block (43), and the clamping block (43) separates the water inlet area and the water outlet area.

10. The novel liquid cooling plate flow-balanced heat dissipation device according to claim 1, characterized in that: At the top of the first flow collection area (2), the top of the second flow collection area (3), and the middle top of the main runner plate (4), there are positioning blocks (11) fixed to the battery respectively, and grooves for fixing the battery are provided on the positioning blocks (11).

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