Liquid cooling plate, battery pack and vehicle

Abstract

The utility model provides a liquid cooling plate, a battery pack and a vehicle. The liquid cooling plate comprises a first side plate and a second side plate; the first side plate and the second side plate are oppositely arranged, and a liquid cooling space for accommodating cooling liquid is formed between the first side plate and the second side plate; a plurality of first reinforcing ribs are arranged on the surface, located in the liquid cooling space, of the first side plate in a protruding mode, and the first reinforcing ribs are arranged at intervals in the height direction of the liquid cooling plate; a plurality of second reinforcing ribs are arranged on the surface, located in the liquid cooling space, of the second side plate in a protruding mode, and the second reinforcing ribs are arranged at intervals in the height direction of the liquid cooling plate; and in the height direction of the liquid cooling plate, the distance between the first reinforcing ribs and the second reinforcing ribs is gradually increased from the top and the bottom of the liquid cooling plate to the middle position. The liquid cooling plate provided by the embodiment of the utility model not only has excellent heat dissipation efficiency, but also can accommodate the expansion deformation of the battery monomers.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation, and in particular to a liquid cooling plate, a battery pack and a vehicle. Background Art

[0002] At present, the heat dissipation of battery packs in new energy electric vehicles has become an important factor affecting the working performance of battery packs.

[0003] In the battery pack, in order to improve the heat dissipation efficiency of the battery, the industry has designed a liquid cooling plate that can contact the large surface of the battery cell to dissipate heat. This liquid cooling plate is sandwiched in the gap between two adjacent battery cells and contacts the large surface of the battery cell. By increasing the contact area, the heat dissipation efficiency can be improved.

[0004] However, since the liquid cooling plate occupies the reserved expansion gaps between the battery cells, when the battery cells heat up and expand, there is a lack of sufficient deformation accommodation space, and the expansion of the battery cells is hindered. Utility Model Content

[0005] In view of this, the utility model aims to provide a liquid cooling plate, a battery pack and a vehicle, so as to ensure the heat dissipation efficiency of the battery cells while having an effective expansion space.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] The embodiment of the utility model provides a liquid cooling plate, the liquid cooling plate comprising a first side plate and a second side plate;

[0008] The first side plate and the second side plate are arranged opposite to each other, and a liquid cooling space for accommodating a coolant is formed between the first side plate and the second side plate;

[0009] A plurality of first reinforcing ribs are protrudingly provided on the surface of the first side plate located in the liquid cooling space, and the plurality of first reinforcing ribs are arranged at intervals along the height direction of the liquid cooling plate;

[0010] A plurality of second reinforcing ribs are protruding from the surface of the second side plate located in the liquid cooling space, and the plurality of second reinforcing ribs are arranged at intervals along the height direction of the liquid cooling plate;

[0011] Along the height direction of the liquid cooling plate, from the top and bottom to the middle position of the liquid cooling plate, the distance between the first reinforcing ribs and the second reinforcing ribs gradually increases.

[0012] Furthermore, the liquid cooling plate also includes a top plate and a bottom plate;

[0013] Along the height direction of the liquid cooling plate, the top plate and the bottom plate are arranged opposite to each other and are both connected to the first side plate and the second side plate;

[0014] The first side plate, the second side plate, the top plate and the bottom plate together form a rectangular cross section.

[0015] Furthermore, the liquid cooling plate further comprises vertical reinforcing ribs;

[0016] The vertical reinforcing rib is located between the first reinforcing rib and the second reinforcing rib, one end of the vertical reinforcing rib is connected to the top plate, and the other end of the vertical reinforcing rib is connected to the bottom plate.

[0017] Furthermore, along the height direction of the liquid cooling plate, from the top and bottom to the middle position of the liquid cooling plate, the gap between the first reinforcing rib and the vertical reinforcing rib gradually increases; and / or,

[0018] Along the height direction of the liquid cooling plate, from the top and bottom to the middle position of the liquid cooling plate, the gap between the second reinforcing rib and the vertical reinforcing rib gradually increases.

[0019] Further, along the height direction of the liquid cooling plate, the first reinforcing rib and / or the second reinforcing rib closest to the top plate position extends to connect with the vertical reinforcing rib; and / or,

[0020] Along the height direction of the liquid cooling plate, the first reinforcing rib and / or the second reinforcing rib closest to the bottom plate position extend to connect with the vertical reinforcing rib.

[0021] Furthermore, the first side plate, the second side plate, the top plate, the bottom plate, the first reinforcing rib, the second reinforcing rib and the vertical reinforcing rib are an integrated piece.

[0022] Furthermore, along the height direction of the liquid cooling plate, the plurality of first reinforcing ribs and the plurality of second reinforcing ribs are located at the same height position or are staggered.

[0023] Compared with the prior art, the liquid cooling plate described in the utility model has the following advantages:

[0024] The liquid cooling plate provided by the utility model has a plurality of first reinforcing ribs and a plurality of second reinforcing ribs protruding from the surfaces of the two opposite side plates in the liquid cooling plate, and the plurality of first reinforcing ribs are arranged at intervals on the surfaces of the side plates, and the plurality of second reinforcing ribs are arranged at intervals on the surfaces of the side plates, and the spacing between the first reinforcing ribs and the second reinforcing ribs gradually increases from the top and bottom of the liquid cooling plate to the middle position along the height direction of the liquid cooling plate. For the battery monomer, when it expands, the middle part is usually bulged. Therefore, when the battery monomer placed close to the liquid cooling plate expands, due to the large spacing between the first reinforcing ribs and the second reinforcing ribs in the middle part of the liquid cooling plate, the battery monomer can squeeze the first side plate and the second side plate to deform close to each other to accommodate the expansion of the battery monomer. In addition, it is also easy to understand that when the battery monomer is not expanded, the first side plate and the second side plate are respectively in contact with the large surfaces of different battery monomers to achieve large-surface heat dissipation of the battery monomer. Therefore, the liquid cooling plate of the utility model embodiment has both excellent heat dissipation efficiency and can accommodate the expansion and deformation of the battery monomer.

[0025] Another object of the present invention is to provide a battery pack to improve the working reliability of the battery pack.

[0026] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0027] An embodiment of the utility model provides a battery pack, which includes the aforementioned liquid cooling plate.

[0028] Furthermore, the battery pack further comprises a plurality of battery cells;

[0029] The plurality of battery cells are stacked and arranged in a straight line, the liquid cooling plate is arranged in the gap between the adjacent battery cells, and the liquid cooling plate abuts against the largest surface of the battery cells.

[0030] Furthermore, a heat-conducting adhesive is provided between the liquid cooling plate body and the battery cell.

[0031] The advantages of the battery pack and the above-mentioned liquid cooling plate over the prior art are the same and will not be described in detail here.

[0032] Another object of the present invention is to provide a vehicle to improve the reliability of the vehicle's power supply.

[0033] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0034] A vehicle comprising any one of the aforementioned battery packs.

[0035] The advantages of the vehicle and the above-mentioned battery pack over the prior art are the same and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0037] Figure 1 A schematic diagram of a battery pack according to an embodiment of the present utility model;

[0038] Figure 2 It is a cross-sectional schematic diagram of a liquid cooling plate according to an embodiment of the utility model;

[0039] Figure 3 It is a cross-sectional schematic diagram of a liquid cooling plate and a battery cell assembly contact according to an embodiment of the utility model;

[0040] Figure 4 For the utility model embodiment Figure 2 A schematic cross-sectional view of the lower half of the liquid cooling plate;

[0041] Figure 5 It is a cross-sectional schematic diagram of another liquid cooling plate according to an embodiment of the present utility model.

[0042] Description of reference numerals:

[0043] 10-liquid cooling plate, 101-first side plate, 102-second side plate, 1011-first reinforcing rib, 1012-second reinforcing rib, 103-top plate, 104-bottom plate, 105-vertical reinforcing rib. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0045] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0046] Reference Figures 1 to 3 , the embodiment of the utility model provides a liquid cooling plate 10, the liquid cooling plate 10 includes a first side plate 101 and a second side plate 102;

[0047] The first side plate 101 and the second side plate 102 are arranged opposite to each other, and a liquid cooling space for accommodating a coolant is formed between the first side plate 101 and the second side plate 102;

[0048] A plurality of first reinforcing ribs 1011 are protrudingly provided on the surface of the first side plate 101 located in the liquid cooling space, and the plurality of first reinforcing ribs 101 are arranged at intervals along the height direction Z of the liquid cooling plate 10;

[0049] A plurality of second reinforcing ribs 1021 are protrudingly provided on the surface of the second side plate 102 located in the liquid cooling space, and the plurality of second reinforcing ribs 1021 are arranged at intervals along the height direction Z of the liquid cooling plate 10;

[0050] Along the height direction Z of the liquid cooling plate 10 , from the top and bottom to the middle of the liquid cooling plate 10 , the distance between the first reinforcing rib 101 and the second reinforcing rib 102 gradually increases.

[0051] Figure 1 The internal structure of a battery pack of an embodiment of the utility model is shown, wherein a plurality of battery cells 20 are stacked side by side front to back, and a liquid cooling plate 10 is placed between two adjacent battery cells 20. The liquid cooling plate 10 is in contact with the large surfaces of the two battery cells 20 on both sides at the same time to cool and dissipate heat. The large surfaces of the battery cells 20 are the two side surfaces with larger areas perpendicular to the thickness direction.

[0052] like Figure 2 As shown, the liquid cooling plate 10 of the embodiment of the utility model includes a first side plate 101 and a second side plate 102. The first side plate 101 and the second side plate 102 are thinner plates, which are arranged face to face and can be parallel to each other. A liquid cooling space for accommodating cooling liquid is formed between the first side plate 101 and the second side plate 102. At this time, the first side plate 101 and the second side plate 102 serve as side walls of the liquid cooling space.

[0053] Combination Figure 2 As shown in the figure, a plurality of first reinforcing ribs 1011 are protruding from the surface of the first side plate 101 located in the liquid cooling space, and the first reinforcing ribs 1011 are located on the surface of the first side plate 101 close to the second side plate 102, and along the height direction Z of the liquid cooling plate 10, the plurality of first reinforcing ribs 1011 are spaced apart from each other, and the spacing between adjacent first reinforcing ribs 1011 may be equal or unequal.

[0054] The second side plate 102 is located in the liquid cooling space and has a plurality of second reinforcing ribs 1021 protruding from its surface. The second reinforcing ribs 1021 are located on the surface of the second side plate 102 close to the first side plate 101, and are spaced apart from each other along the height direction Z of the liquid cooling plate 10. The spacing between adjacent second reinforcing ribs 1021 may be equal or unequal.

[0055] It should be noted that the above-mentioned first reinforcing ribs 1011 and second reinforcing ribs 1021 can both be long strip structures, whose length direction is perpendicular to the paper surface, and multiple first reinforcing ribs 1011 separate the surface of the first side panel 101 into multiple groove-shaped spaces, and multiple second reinforcing ribs 1021 separate the surface of the second side panel 102 into multiple groove-shaped spaces.

[0056] like Figure 2 As shown, along the height direction Z of the liquid cooling plate 10, the closer to the top and bottom ends of the liquid cooling plate 10, the smaller the spacing between the first reinforcing rib 101 and the second reinforcing rib 102, the closer the two are to each other, and the closer to the middle part of the liquid cooling plate 10, the smaller the spacing between the first reinforcing rib 101 and the second reinforcing rib 102, the farther the two are from each other. It should be noted that the height direction Z of the liquid cooling plate 10 is consistent with the height direction of the battery cell 20, that is, the distance between the top surface with the pole and the bottom surface without the pole.

[0057] Along the +Z direction shown in the figure, the distance between the first reinforcing rib 101 and the second reinforcing rib 102 gradually increases from the bottom to the middle of the liquid cooling plate 10. Along the -Z direction shown in the figure, the distance between the first reinforcing rib 101 and the second reinforcing rib 102 gradually increases from the top to the middle of the liquid cooling plate 10.

[0058] For example, in Figure 2 In the figure, from the bottom to the middle of the liquid cooling plate 10, the distance between the first reinforcing rib 101 and the second reinforcing rib 102 gradually increases from d1 to d12.

[0059] Combination Figure 3 As shown in the figure, when a battery cell 20 expands, the middle part usually bulges. Therefore, when a battery cell 20 placed close to the liquid cooling plate 10 expands, since the spacing between the first reinforcing rib 101 and the second reinforcing rib 102 in the middle part of the liquid cooling plate 10 is large, the battery cell 20 can squeeze the first side plate 101 and the second side plate 102 to be close to each other and deform to accommodate the expansion of the battery cell 20. In addition, it is also easy to understand that when the battery cell 20 is not expanded, the first side plate 101 and the second side plate 102 are respectively in contact with the large surfaces of different battery cells 20 to achieve large-surface heat dissipation of the battery cell 20.

[0060] Therefore, the liquid cooling plate of the embodiment of the utility model has excellent heat dissipation efficiency and can accommodate the expansion and deformation of the battery cell 20 .

[0061] Further, refer to Figure 2 , the liquid cooling plate 10 further includes a top plate 103 and a bottom plate 104;

[0062] Along the height direction Z of the liquid cooling plate 10 , the top plate 103 and the bottom plate 104 are arranged opposite to each other, and are both connected to the first side plate 101 and the second side plate 102 ;

[0063] The first side plate 101 , the second side plate 102 , the top plate 103 , and the bottom plate 104 together form a rectangular cross section.

[0064] like Figure 2As shown, the liquid cooling plate 10 in the embodiment of the utility model further includes a top plate 103 and a bottom plate 104, the top plate 103 and the bottom plate 104 are arranged opposite to each other in the height direction Z of the liquid cooling plate 10, the top plate 103 connects the first side plate 101 and the second side plate 102 together at the top, and the bottom plate 104 connects the first side plate 101 and the second side plate 102 together at the bottom, and the first side plates 101 and the second side plates 102 on the left and right sides and the top plates 103 and the bottom plates 104 at the upper and lower ends together form a rectangular cross section as shown in the figure. Of course, end plates can also be arranged at both ends of the length direction of the liquid cooling plate 10 to close the openings at both ends of the rectangular space to form a closed liquid cooling space.

[0065] The liquid cooling plate 10 with a rectangular outer contour can more fully abut against the large surface of the battery cell 20, thereby ensuring a higher heat dissipation efficiency.

[0066] Further, refer to Figure 2 , the liquid cooling plate 10 further includes vertical reinforcing ribs 105;

[0067] The vertical reinforcing rib 105 is located between the first reinforcing rib 1011 and the second reinforcing rib 1021 , one end of the vertical reinforcing rib 105 is connected to the top plate 103 , and the other end of the vertical reinforcing rib 105 is connected to the bottom plate 104 .

[0068] like Figure 2 As shown, the liquid cooling plate 10 also includes a vertical reinforcing rib 105, which is arranged between the first reinforcing rib 1011 and the second reinforcing rib 1021. One end of the vertical reinforcing rib 105 is connected and fixed to the upper top plate 103, and extends downward along the height direction Z of the liquid cooling plate 10 to be connected and fixed to the lower bottom plate 104. On the one hand, the vertical reinforcing rib 105 plays a structural reinforcement role in the liquid cooling space, which can improve the structural rigidity of the liquid cooling plate 10. On the other hand, the vertical reinforcing rib 105 is located between the first reinforcing rib 1011 and the second reinforcing rib 1021 on both sides, and can also play a restraining and limiting role on the displacement of the first reinforcing rib 1011 and the second reinforcing rib 1021, which can prevent the first reinforcing rib 1011 on the left from moving excessively to the right, and can also prevent the second reinforcing rib 1021 on the right from moving excessively to the left. Thereby, the liquid cooling plate 10 is prevented from being deformed too much when accommodating the expansion of the battery cell 20.

[0069] In addition, it should be noted that the vertical reinforcing ribs 105 in the embodiment of the utility model can be a hollow mesh structure or a completely solid flat plate structure, and there is a solid structure at the position opposite to the first reinforcing ribs 1011 and the second reinforcing ribs 1021, which can limit the excessive movement of the first reinforcing ribs 1011 and the second reinforcing ribs 1021. When the vertical reinforcing ribs 105 are a completely solid flat plate structure, the liquid cooling space can also be divided into two parts, the coolant can be supplied and circulated independently, and the heat can be dissipated from different battery cells 20 on the left and right sides respectively.

[0070] Further, refer to Figure 4 , along the height direction Z of the liquid cooling plate 10, from the top and bottom to the middle position of the liquid cooling plate 10, the gap between the first reinforcing rib 1011 and the vertical reinforcing rib 105 gradually increases; and / or,

[0071] Along the height direction Z of the liquid cooling plate 10 , from the top and bottom to the middle of the liquid cooling plate 10 , the gap between the second reinforcing rib 1021 and the vertical reinforcing rib 105 gradually increases.

[0072] like Figure 4 As shown, in one embodiment, whether along the +Z direction shown in the figure, from the bottom to the middle position of the liquid cooling plate 10, or along the -Z direction shown in the figure, from the top to the middle position of the liquid cooling plate 10, the gap between the first reinforcing rib 1011 and the vertical reinforcing rib 105 can be gradually increased, so that the middle part of the first side plate 101 can accommodate the expansion and deformation of the battery cell 20 adjacent to it.

[0073] like Figure 5 As shown, in one embodiment, whether along the +Z direction shown in the figure, from the bottom to the middle position of the liquid cooling plate 10, or along the -Z direction shown in the figure, from the top to the middle position of the liquid cooling plate 10, the gap between the second reinforcing rib 1021 and the vertical reinforcing rib 105 can be gradually increased, so that the middle part of the second side plate 102 can accommodate the expansion and deformation of the battery cell 20 adjacent to it.

[0074] It is easy to understand that in a liquid cooling plate 10, when the gap between the first reinforcing rib 1011 and the vertical reinforcing rib 105, and the gap between the second reinforcing rib 1021 and the vertical reinforcing rib 105 are gradually increased, that is, Figure 2 's hint.

[0075] Further, refer to Figure 2 , along the height direction Z of the liquid cooling plate 10 , the first reinforcing rib 1011 and / or the second reinforcing rib 1021 closest to the top plate 103 extend to connect with the vertical reinforcing rib 105 ; and / or,

[0076] Along the height direction Z of the liquid cooling plate 10 , the first reinforcing rib 1011 and / or the second reinforcing rib 1021 closest to the bottom plate 104 extends to connect with the vertical reinforcing rib 105 .

[0077] like Figure 2 As shown, in one embodiment, for at least one of the first reinforcing rib 1011 and the second reinforcing rib 1021 that are closest to the top plate 103, when the reinforcing rib protrudes from the corresponding side plate surface, it can extend all the way to connect with the vertical reinforcing rib 105, thereby improving the structural rigidity of the top of the liquid cooling plate 10.

[0078] Similarly, Figure 1 As shown, for at least one of the first reinforcing rib 1011 and the second reinforcing rib 1021 that are closest to the bottom plate 104, when the reinforcing rib protrudes from the corresponding side plate surface, it can extend all the way to connect with the vertical reinforcing rib 105, thereby improving the structural rigidity of the bottom of the liquid cooling plate 10.

[0079] It is understandable that the connection between the first reinforcing rib 1011 , the second reinforcing rib 1021 and the vertical reinforcing rib 105 can also be designed at the position closest to the top plate 103 and the bottom plate 104 to ensure the structural rigidity of the top and bottom ends of the liquid cooling plate 10 at the same time.

[0080] Further, refer to Figure 2 The first side plate 101, the second side plate 102, the top plate 103, the bottom plate 104, the first reinforcing rib 1011, the second reinforcing rib 1021 and the vertical reinforcing rib 105 are an integrated piece.

[0081] The liquid cooling plate 10 of the present invention can be formed by extruding a blank in a mold. Figure 2 The structure of the schematic cross-sectional shape, the first side plate 101, the second side plate 102, the top plate 103, the bottom plate 104, the first reinforcing rib 1011, the second reinforcing rib 1021 and the vertical reinforcing rib 105 of the liquid cooling plate 10 can all be made from the same blank, such as an aluminum alloy bar or a blank of other composite materials. The liquid cooling plate 10 has a better structural integrity, can reduce assembly processes such as welding, and is helpful to improve the sealing and assembly efficiency of the liquid cooling plate 10.

[0082] Further, refer to Figure 2 or Figure 5 Along the height direction Z of the liquid cooling plate 10 , the plurality of first reinforcing ribs 1011 and the plurality of second reinforcing ribs 1021 are located at the same height position or are staggered.

[0083] In one implementation of the present utility model, Figure 2 As shown in the diagram, along the height direction Z of the liquid cooling plate 10, at the height position corresponding to each first reinforcing rib 1011, there is a corresponding second reinforcing rib 1021. At this time, the multiple first reinforcing ribs 1011 and the multiple second reinforcing ribs 1021 are located at the same height position, and the multiple first reinforcing ribs 1011 and the multiple second reinforcing ribs 1021 are mirror-symmetrical with the vertical reinforcing rib 105 as the axis. At this time, the first reinforcing ribs 1011 and the multiple second reinforcing ribs 1021 can serve as structures to limit excessive movement of each other.

[0084] In another implementation of the utility model embodiment, Figure 5 As shown in the diagram, along the height direction Z of the liquid cooling plate 10, when multiple first reinforcing ribs 1011 are arranged at intervals, the second reinforcing ribs 1021 protruding on the other side plate can be staggered in the space formed by the adjacent first reinforcing ribs 1011. Combined with the diagram, it is easy to understand that the first reinforcing ribs 1011 are also staggered in the space formed by the adjacent second reinforcing ribs 1021. When the battery cell 20 expands and deforms, when the pressure acts on the corresponding side plate, the side plate drives the corresponding reinforcing ribs to translate. When the reinforcing rib contacts the vertical reinforcing rib 105, since the part directly opposite to the other side of the vertical reinforcing rib 105 is not blocked by the reinforcing rib, it still has a certain degree of deformation ability, especially when the vertical reinforcing rib 105 is not provided in the liquid cooling plate 10, the deformation ability is more prominent. Therefore, the liquid cooling plate 10 with this structure can provide a larger deformation space for the side plate on either side.

[0085] An embodiment of the utility model further provides a battery pack, which includes the aforementioned liquid cooling plate.

[0086] By using the aforementioned liquid cooling plate in the battery pack, based on the improvement of the liquid cooling plate, the working reliability of the battery pack can be further improved.

[0087] Further, refer to Figure 1 , the battery pack further includes a plurality of battery cells 20;

[0088] The plurality of battery cells 20 are stacked and arranged in a straight line, and the liquid cooling plate 10 is disposed in the gaps between the adjacent battery cells 20 . The liquid cooling plate 10 abuts against the largest surface of the battery cells 20 .

[0089] like Figure 1 The battery pack of the embodiment of the utility model further includes a plurality of battery cells 20. The battery cells 20 may be in a cubic shape. The plurality of battery cells 20 are stacked and arranged in a straight line. The direction of the arrangement may be consistent with the length of the vehicle body, such as Figure 1The X direction is shown in the figure. Along the X direction, a gap is reserved between adjacent battery cells 20 for installing the liquid cooling plate 10. The liquid cooling plate 10 can be inserted and fixed in the gap. The two sides of the liquid cooling plate 10 can respectively abut against the maximum surface of the battery cells 20 at different positions, thereby achieving large-surface heat dissipation and cooling with the battery cells 20.

[0090] Furthermore, a thermally conductive adhesive is provided between the liquid cooling plate body 101 and the battery cell 20 .

[0091] Specifically, in one embodiment, in the battery pack, the gap between the liquid cooling plate body 101 and the battery cell 20 may be filled with thermal conductive adhesive. On the one hand, the thermal conductive adhesive can improve the efficiency of heat transfer and heat dissipation, and on the other hand, it can also fix the battery cell 20.

[0092] In addition, an embodiment of the utility model further provides a vehicle, the vehicle comprising any one of the aforementioned battery packs.

[0093] In the vehicle provided by the embodiment of the utility model, the reliability of the power supply of the vehicle can be improved by using the battery pack of the aforementioned embodiment as a power source.

[0094] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid cooling plate, characterized in that: The liquid cooling plate comprises a first side plate and a second side plate; The first side plate and the second side plate are arranged opposite to each other, and a liquid cooling space for accommodating a coolant is formed between the first side plate and the second side plate; A plurality of first reinforcing ribs are protrudingly provided on the surface of the first side plate located in the liquid cooling space, and the plurality of first reinforcing ribs are arranged at intervals along the height direction of the liquid cooling plate; A plurality of second reinforcing ribs are protruding from the surface of the second side plate located in the liquid cooling space, and the plurality of second reinforcing ribs are arranged at intervals along the height direction of the liquid cooling plate; Along the height direction of the liquid cooling plate, from the top and bottom to the middle position of the liquid cooling plate, the distance between the first reinforcing ribs and the second reinforcing ribs gradually increases.

2. The liquid cooling plate according to claim 1, characterized in that: The liquid cooling plate also includes a top plate and a bottom plate; Along the height direction of the liquid cooling plate, the top plate and the bottom plate are arranged opposite to each other and are both connected to the first side plate and the second side plate; The first side plate, the second side plate, the top plate and the bottom plate together form a rectangular cross section.

3. The liquid cooling plate according to claim 2, characterized in that: The liquid cooling plate also includes vertical reinforcing ribs; The vertical reinforcing rib is located between the first reinforcing rib and the second reinforcing rib, one end of the vertical reinforcing rib is connected to the top plate, and the other end of the vertical reinforcing rib is connected to the bottom plate.

4. The liquid cooling plate according to claim 3, characterized in that: Along the height direction of the liquid cooling plate, from the top and bottom to the middle position of the liquid cooling plate, the gap between the first reinforcing rib and the vertical reinforcing rib gradually increases; and / or, Along the height direction of the liquid cooling plate, from the top and bottom to the middle position of the liquid cooling plate, the gap between the second reinforcing rib and the vertical reinforcing rib gradually increases.

5. The liquid cooling plate according to claim 4, characterized in that: Along the height direction of the liquid cooling plate, the first reinforcing rib and / or the second reinforcing rib closest to the top plate position extend to connect with the vertical reinforcing rib; and / or, Along the height direction of the liquid cooling plate, the first reinforcing rib and / or the second reinforcing rib closest to the bottom plate position extend to connect with the vertical reinforcing rib.

6. The liquid cooling plate according to claim 3, characterized in that: The first side plate, the second side plate, the top plate, the bottom plate, the first reinforcing rib, the second reinforcing rib and the vertical reinforcing rib are an integrated piece.

7. The liquid cooling plate according to claim 1, characterized in that: Along the height direction of the liquid cooling plate, the plurality of first reinforcing ribs and the plurality of second reinforcing ribs are located at the same height position or are staggered.

8. A battery pack, characterized in that: The battery pack comprises the liquid cooling plate according to any one of claims 1 to 7.

9. The battery pack according to claim 8, characterized in that: The battery pack also includes a plurality of battery cells; The plurality of battery cells are stacked and arranged in a straight line, the liquid cooling plate is arranged in the gap between the adjacent battery cells, and the liquid cooling plate abuts against the largest surface of the battery cells.

10. A vehicle, characterized in that: The vehicle comprises the battery pack according to claim 8 or 9.

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