Liquid cooling plate

Abstract

The utility model provides a liquid cooling plate. The liquid cooling plate comprises a cooling plate body, a blanking cap, a liquid inlet pipe and a liquid outlet pipe, a plurality of flat pipe runners extending in the length direction of the cold plate body are distributed in the cold plate body side by side, a fixed connecting part is arranged on the cold plate body and comprises a first through opening vertically penetrating through the cold plate body and a plugging assembly arranged in the first through opening, and plugging covers are arranged at the two ends of the cold plate body in the length direction correspondingly. The liquid inlet pipe is connected with the blanking cap at one end of the cold plate body, and the liquid outlet pipe is connected with the blanking cap at the other end of the cold plate body. According to the utility model, the fixed connecting part is arranged on the cold plate body, so that when the liquid cooling plate is mounted on the side surface of a battery cell, the fitting degree is greatly improved, a flat tube runner does not need to be reduced, the heat exchange area is ensured, the volume of the liquid cooling plate is basically not influenced, and the design requirement of increasing the energy density of a battery pack is met.

Description

Technical Field

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

[0002] In the existing technology, as the demand for heat dissipation in the field of new energy continues to increase, and the requirements for heat dissipation continue to improve, liquid cooling has become the mainstream in the field of new energy heat dissipation, and the application of multi-faceted cooling has become more and more extensive. As the requirements for the energy density of battery packs continue to increase, the liquid cooling plate for side cooling tends to be thinner and lighter. At present, most of the thin side cooling plates on the market use profile flat tube solutions to reduce the volume of the cold plate; but the flat tube is easy to deform and it is difficult to fit tightly with the side of the battery cell. It is necessary to add fixed points on the cooling surface to fix the module / battery cell; and the conventional method of adding fixed positions on the cooling surface of the cold plate usually reduces the cooling area of ​​the cold plate, increases the volume of the cold plate, and has a complex structure that is difficult to process.

[0003] Therefore, it is necessary to provide a liquid cooling plate to overcome the above-mentioned defects. Utility Model Content

[0004] The utility model aims to provide a liquid cooling plate.

[0005] According to one aspect of the utility model, a liquid cooling plate is provided, comprising:

[0006] A cold plate body, wherein a plurality of flat tube flow channels extending along the length direction of the cold plate body are arranged side by side in the cold plate body, and a fixed connection portion is provided on the cold plate body, wherein the fixed connection portion comprises a first through hole vertically penetrating the cold plate body and a plugging component arranged in the first through hole;

[0007] A plugging cover, which is provided at both ends of the cold plate body in the length direction;

[0008] A liquid inlet pipe connected to a plugging cover at one end of the cold plate body;

[0009] A liquid outlet pipe is connected to a plugging cover at the other end of the cold plate body.

[0010] Preferably, the sealing assembly includes a first sealing member and a second sealing member coaxially arranged with the first through opening, the first sealing member includes a first connecting plate fixed to the upper surface of the cold plate body and a first sealing plate for sealing the flat tube flow channel at the first through opening, and the second sealing member includes a second connecting plate fixed to the lower surface of the cold plate body and a second sealing plate radially inner than the first sealing plate.

[0011] Preferably, the first connecting plate is arranged in an annular shape, and the first sealing plate extends downward from the inner hole side of the first connecting plate in a cylindrical shape perpendicular to the first connecting plate.

[0012] Preferably, the second connecting plate is arranged in an annular shape, the second sealing plate extends upward from the inner hole side of the second connecting plate in a cylindrical shape perpendicular to the second connecting plate, and the first sealing plate, the second sealing plate and the first through-hole are all arranged coaxially.

[0013] Preferably, the lower end surface of the first sealing plate is arranged in close contact with the upper surface of the second connecting plate or with a gap therebetween.

[0014] Preferably, the fixed connection portion includes a second through hole vertically penetrating the cold plate body and a plugging assembly arranged in the second through hole, and the second through hole and the plugging assembly are fixed in the same manner as the first through hole and the plugging assembly.

[0015] Preferably, the first through opening and the second through opening are located in the middle of the cold plate body, and the second through opening and the first through opening are spaced apart from each other along the width direction of the cold plate body.

[0016] Preferably, adjacent flat tube flow channels are separated by partitions.

[0017] Preferably, a plurality of spoiler ridges are provided in the flat tube flow channel, and the spoiler ridges are provided at the top and the bottom of the flat tube flow channel and extend along the length direction of the cold plate body.

[0018] Preferably, the blocking cover includes a mounting groove for the cold plate body to pass through and a liquid storage groove connected to the mounting groove, a step surface is provided between the liquid storage groove and the mounting groove, and the step surface conflicts with the end of the cold plate body to limit the cold plate body.

[0019] Compared with the prior art, the liquid cooling plate provided by the utility model has the following beneficial effects:

[0020] Due to the adoption of the above technical scheme, the utility model has the advantages of simple structure, ingenious design and low cost. By arranging a fixed connection part on the cold plate body, the degree of fit is greatly improved when the liquid cooling plate is installed on the side of the battery cell. This structure does not need to reduce the flat tube flow channel, thereby ensuring the heat exchange area and has basically no effect on the volume of the liquid cooling plate, thus meeting the design requirements of increasing the energy density of the battery pack. This scheme has a simple structure and is easy to weld, saving production costs compared with conventional schemes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 It is a three-dimensional diagram of the liquid cooling plate of the utility model;

[0023] Figure 2 This is a front view of the liquid cooling plate of the utility model;

[0024] Figure 3 for Figure 2 A magnified cross-sectional view at AA;

[0025] Figure 4 for Figure 2 An enlarged cross-sectional view of the BB;

[0026] Figure 5 It is a partial exploded view of the liquid cooling plate of the present utility model.

[0027] Among them, 1. cold plate body, 11. flat tube flow channel, 111. partition, 112. spoiler rib, 12. fixed connection part, 121. first through hole, 122. second through hole, 123. first blocking piece, 1231. first connecting plate, 1232. first sealing plate, 124. second blocking piece, 1241. second connecting plate, 1242. second sealing plate, 2. plugging cover, 21. mounting groove, 22. liquid storage tank, 23. step surface, 3. liquid inlet pipe, 4. liquid outlet pipe. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0030] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0031] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0034] See also Figures 1 to 4 The present embodiment discloses a liquid cooling plate, comprising a cold plate body 1, a plugging cover 2, a liquid inlet pipe 3 and a liquid outlet pipe 4. The plugging covers 2 are arranged at both ends of the cold plate body 1 in the length direction. The liquid inlet pipe 3 is welded and sealed with the plugging cover 2 at one end of the cold plate body 1; the liquid outlet pipe 4 is welded and sealed with the plugging cover 2 at the other end of the cold plate body 1. A plurality of flat tube flow channels 11 extending along the length direction of the cold plate body 1 are arranged side by side in the cold plate body 1, and adjacent flat tube flow channels 11 are separated by partitions 111.

[0035] A plurality of spoiler ribs 112 are also provided in the flat tube flow channel 11. The spoiler ribs 112 are provided at the top and bottom of the flat tube flow channel 11 and extend along the length direction of the cold plate body 1. The spoiler ribs 112 not only play a spoiler role, but also increase the heat exchange area, enhance the heat exchange efficiency, and also play a role as a reinforcing rib to strengthen the strength of the liquid cooling plate. The plug cover 2 includes a mounting groove 21 for the cold plate body 1 to pass through and a liquid storage tank 22 connected to the mounting groove 21. A step surface 23 is provided between the liquid storage tank 22 and the mounting groove 21, and the step surface 23 conflicts with the end of the cold plate body 1 to limit the cold plate body.

[0036] A fixed connection portion 12 is provided on the cold plate body 1, and the fixed connection portion 12 includes a first through hole 121 and a second through hole 122 vertically penetrating the cold plate body 1, and a plugging component arranged in the first through hole 121 and the second through hole 122. The first through hole 121 and the second through hole 122 are located in the middle of the cold plate body 1, and are arranged at intervals along the width direction of the cold plate body 1. In other embodiments, the first through hole 121 and the second through hole 122 can also be arranged at other positions of the cold plate body 1 according to installation requirements. The flat tube flow channel 11 at the cold plate body 1 penetrated by the first through hole 121 and the second through hole 122 forms a circumferential opening communicating with the outside world. The plugging component in the first through hole 121 includes a first plugging member 123 and a second plugging member 124 coaxially arranged with the first through hole 121.

[0037] See also Figure 3 and Figure 5 The first blocking member 123 includes a first connecting plate 1231 fixed to the upper surface of the cold plate body 1 and a first sealing plate 1232 for blocking the flat tube flow channel 11 at the first through opening 121. The second blocking member 124 includes a second connecting plate 1241 fixed to the lower surface of the cold plate body 1 and a second sealing plate 1242 penetrated radially inwardly of the first sealing plate 1232.

[0038] The first connection plate 1231 is arranged in an annular shape, and the first sealing plate 1232 extends downward from the inner hole side of the first connection plate 1231 in a cylindrical shape perpendicular to the first connection plate 1231, and is used to seal the circumferential opening at the flat tube flow channel 11. The second connection plate 1241 is arranged in an annular shape, and the second sealing plate 1242 extends upward from the inner hole side of the second connection plate 1241 in a cylindrical shape perpendicular to the second connection plate 1241, and the first sealing plate 1232, the second sealing plate 1242 and the first through-hole 121 are all arranged coaxially. The lower end surface of the first sealing plate 1232 is arranged in contact with the upper surface of the second connection plate 1241 or is arranged with a gap.

[0039] The plugging assembly in the second through hole 122 is the same as the plugging assembly in the first through hole 121, and the second through hole 122 and the plugging assembly are fixed in the same manner as the first through hole 121. In other embodiments, according to actual conditions, the number of through holes in the fixed connection portion is not limited to two, but may be more than two, and their arrangement is determined according to the installation conditions to meet actual requirements.

[0040] The flat tube flow channel 11 in the cold plate body 1 is formed by extrusion, and the first sealing member 123 and the second sealing member 124 are installed in the through-opening in both directions, and the sealing members and the through-opening are assembled and welded to form a closed flow channel space. In the side cooling scenario, the fixed connection part 12 can be used with a fixing member to fix the liquid cooling plate and the battery cell, so that the liquid cooling plate and the battery cell fit closely to maintain a good heat exchange effect. This structure does not need to reduce the flat tube flow channel 11, ensures the heat exchange area, and has basically no effect on the volume of the liquid cooling plate, meeting the design requirements of increasing the energy density of the battery pack. At the same time, this solution has a simple structure and is easy to weld. Compared with conventional solutions, it saves production costs and solves the problems of adding a fixed structure to the cooling surface of the liquid cooling plate, which will reduce the cooling area of ​​the cold plate, increase the volume of the cold plate, and have a complex structure that is difficult to process.

[0041] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A liquid cooling plate, characterized in that: include: A cold plate body, wherein a plurality of flat tube flow channels extending along the length direction of the cold plate body are arranged side by side in the cold plate body, and a fixed connection portion is provided on the cold plate body, wherein the fixed connection portion comprises a first through hole vertically penetrating the cold plate body and a plugging component arranged in the first through hole; A plugging cover, which is provided at both ends of the cold plate body in the length direction; A liquid inlet pipe connected to a plugging cover at one end of the cold plate body; A liquid outlet pipe is connected to a plugging cover at the other end of the cold plate body.

2. The liquid cooling plate according to claim 1, characterized in that: The sealing assembly includes a first sealing member and a second sealing member coaxially arranged with the first through opening, the first sealing member includes a first connecting plate fixed to the upper surface of the cold plate body and a first sealing plate for sealing the flat tube flow channel at the first through opening, the second sealing member includes a second connecting plate fixed to the lower surface of the cold plate body and a second sealing plate radially inner than the first sealing plate.

3. The liquid cooling plate according to claim 2, characterized in that: The first connecting plate is arranged in an annular shape, and the first sealing plate is cylindrically extended downward from the inner hole side of the first connecting plate perpendicular to the first connecting plate.

4. The liquid cooling plate according to claim 3, characterized in that: The second connecting plate is arranged in an annular shape, the second sealing plate extends upward from the inner hole side of the second connecting plate in a cylindrical shape perpendicular to the second connecting plate, and the first sealing plate, the second sealing plate and the first through-hole are all arranged coaxially.

5. The liquid cooling plate according to claim 4, characterized in that: The lower end surface of the first sealing plate is arranged in close contact with the upper surface of the second connecting plate or is arranged with a gap therebetween.

6. The liquid cooling plate according to claim 5, characterized in that: The fixed connection portion includes a second through hole vertically penetrating the cold plate body and a plugging assembly arranged in the second through hole, and the second through hole and the plugging assembly are fixed in the same manner as the first through hole and the plugging assembly.

7. The liquid cooling plate according to claim 6, characterized in that: The first through opening and the second through opening are located in the middle of the cold plate body, and the second through opening and the first through opening are spaced apart from each other along the width direction of the cold plate body.

8. The liquid cooling plate according to claim 7, characterized in that: Adjacent flat tube flow channels are separated by partitions.

9. The liquid cooling plate according to claim 8, characterized in that: A plurality of spoiler ridges are arranged in the flat tube flow channel. The spoiler ridges are arranged at the top and the bottom of the flat tube flow channel and extend along the length direction of the cold plate body.

10. The liquid cooling plate according to claim 9, characterized in that: The blocking cover includes a mounting groove for the cold plate body to pass through and a liquid storage groove connected to the mounting groove. A step surface is provided between the liquid storage groove and the mounting groove. The step surface conflicts with the end of the cold plate body to limit the cold plate body.

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