Battery cold plate and vehicle

Abstract

The utility model discloses a battery cold plate and a vehicle, the battery cold plate comprises a runner plate, a first runner and a second runner, the first runner and the second runner are arranged on the runner plate, the first runner and the second runner are arranged in a staggered manner, the first runner is provided with a first medium inlet and a first medium outlet, and the second runner is provided with a second medium inlet and a second medium outlet. The first flow channel is provided with first medium inlets and second medium outlets, the second flow channel is provided with second medium inlets and second medium outlets, the flowing direction of the first medium in the first flow channel is opposite to that of the second medium in the second flow channel, the number of the first medium inlets corresponds to that of the second medium outlets, and the number of the first medium outlets corresponds to that of the second medium inlets. According to the utility model, a plurality of second medium inlets can be arranged, the flow path of the second medium in the second flow channel and the flow path of the first medium in the first flow channel are increased, and compared with the single flow path of the second medium, the flow of the refrigerant in the second flow channel is prevented from being insufficient, so that the temperature uniformity of the battery cold plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a battery cold plate and a vehicle. Background Art

[0002] Electric vehicle batteries generate heat during charging and discharging. Excessively high battery temperatures can reduce battery life and performance, posing significant safety risks. Therefore, battery cooling is essential. Currently, direct battery cooling systems are used, which pass air conditioning refrigerant through the battery cold plate to cool the power battery. However, insufficient refrigerant flow can easily lead to uneven temperatures within the refrigerant flow channel, compromising the battery cooling effect. Utility Model Content

[0003] The utility model aims to at least solve the technical problem in the prior art that when the refrigerant temperature is too low or the refrigerant flow is insufficient, the temperature in the flow channel where the refrigerant is located is easily uneven, thereby affecting the cooling effect on the battery.

[0004] To this end, one object of the present utility model is to provide a battery cold plate, which includes a flow channel plate, a first flow channel and a second flow channel, the first flow channel and the second flow channel are arranged on the flow channel plate, and the first flow channel and the second flow channel are arranged alternately, the first flow channel is provided with a first medium inlet and a first medium outlet, the second flow channel is provided with a second medium inlet and a second medium outlet, the flow direction of the first medium in the first flow channel is opposite to the flow direction of the second medium in the second flow channel, the number of the first medium inlets corresponds to the number of the second medium outlets, and the number of the first medium outlets corresponds to the number of the second medium inlets.

[0005] In some embodiments, there is one first medium inlet and two first medium outlets. The first flow channel includes a first inlet flow channel and two first branch flow channels. One end of the first inlet flow channel has the first medium inlet, and the other end of the first inlet flow channel is respectively connected to the head ends of the two first branch flow channels. The end of each first branch flow channel has the first medium outlet to form a first outlet flow channel.

[0006] In some embodiments, there are two second medium inlets and one second medium outlet. The second flow channel includes two second branch flow channels and a second outlet flow channel. The head end of each second branch flow channel has a second medium inlet to form a second inlet flow channel. The ends of the two second branch flow channels are connected and connected to one end of the second outlet flow channel. The other end of the second outlet flow channel has the second medium outlet.

[0007] In some embodiments, the first branch flow channel is serpentine-shaped, and the second branch flow channel is serpentine-shaped.

[0008] In some embodiments, the first medium inlet and the two first medium outlets are located on one side of the flow channel plate, and the two second medium inlets and the second medium outlets are located on the other side of the flow channel plate.

[0009] In some embodiments, the first outlet flow channel and the second inlet flow channel are disposed near a middle portion of the flow channel plate.

[0010] In some embodiments, the first flow channel and the flow channel plate are an integrated structure, and the second flow channel is detachably mounted on the flow channel plate.

[0011] In some embodiments, the first flow channel includes a plurality of first flow channel segments formed by multiple bends, and the second flow channel segment formed by the second bend is located in the gap between the first flow channel segments.

[0012] In some embodiments, a support plate is further included, wherein the support plate is connected to a side of the flow channel plate facing away from the first flow channel, and the battery is mounted on the support plate.

[0013] Another object of the present invention is to provide a vehicle comprising the battery cold plate.

[0014] The battery cold plate and vehicle provided by the embodiments of the present invention have the following beneficial effects:

[0015] The battery cold plate includes a flow channel plate, a first flow channel, and a second flow channel. The first flow channel and the second flow channel are arranged on the flow channel plate, and the first flow channel and the second flow channel are arranged in an alternating manner. The first flow channel is provided with a first medium inlet and a first medium outlet, and the second flow channel is provided with a second medium inlet and a second medium outlet. The flow direction of the first medium in the first flow channel is opposite to the flow direction of the second medium in the second flow channel. The number of first medium inlets corresponds to the number of second medium outlets, and the number of first medium outlets corresponds to the number of second medium inlets. By making the flow direction of the first medium in the first flow channel opposite to the flow direction of the second medium in the second flow channel, and by providing multiple second medium inlets, the number of flow paths of the second medium in the second flow channel and the number of flow paths of the first medium in the first flow channel are increased. Compared with providing a single flow path for the second medium, insufficient flow of the refrigerant in the second flow channel is avoided, thereby improving the temperature uniformity of the battery cold plate and further improving the cooling effect on the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a three-dimensional diagram of a battery cold plate in an embodiment of the present utility model;

[0018] Figure 2 is a top view of a battery cold plate in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the first flow channel in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the second flow channel in an embodiment of the present utility model;

[0021] Figure 5 is a cross-sectional view of a battery cold plate in an embodiment of the present utility model;

[0022] Figure 6 This is a schematic structural diagram of another battery cold plate in an embodiment of the present invention;

[0023] Figure 7 This is a schematic structural diagram of another battery cold plate in an embodiment of the present invention;

[0024] Figure 8 is a cross-sectional view of yet another battery cold plate in an embodiment of the present invention;

[0025] Reference numerals:

[0026] 1. Flow channel plate; 2. First flow channel; 21. First inlet flow channel; 22. First branch flow channel; 3. Second flow channel; 31. Second branch flow channel; 32. Second outlet flow channel; 4. First medium inlet; 5. First medium outlet; 6. Second medium inlet; 7. Second medium outlet; 8. Support plate; 9. Battery. DETAILED DESCRIPTION

[0027] Various aspects and features of the present invention are described herein with reference to the accompanying drawings.

[0028] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present invention will occur to those skilled in the art.

[0029] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, serve to explain the principles of the present invention.

[0030] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0031] It should also be understood that although the present invention has been described with reference to certain specific examples, those skilled in the art will be able to surely realize many other equivalent forms of the present invention, which have the characteristics described in the claims and are therefore within the scope of protection defined thereby.

[0032] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0033] Specific embodiments of the present invention will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present invention with unnecessary or redundant detail. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but rather serve merely as a basis and representative basis for the claims to teach those skilled in the art to variously employ the present invention with substantially any suitable detailed structure.

[0034] The utility model discloses a battery cold plate, such as Figure 1-Figure 5 As shown, the battery cold plate includes a flow channel plate 1, a first flow channel 2, and a second flow channel 3. The first flow channel 2 and the second flow channel 3 are arranged on the flow channel plate 1, and the first flow channel 2 and the second flow channel 3 are arranged alternately. The first flow channel 2 is provided with a first medium inlet 4 and a first medium outlet 5, and the second flow channel 3 is provided with a second medium inlet 6 and a second medium outlet 7. The flow direction of the first medium in the first flow channel 2 is opposite to the flow direction of the second medium in the second flow channel 3. The number of the first medium inlets 4 corresponds to the number of the second medium outlets 7, and the number of the first medium outlets 5 corresponds to the number of the second medium inlets 6.

[0035] Specifically, the first medium in the first flow channel 2 is a coolant, and the second medium in the second flow channel 3 is a refrigerant. The coolant in the first flow channel 2 cools the battery 9 at high temperatures and heats the battery 9 at low temperatures. When heating the battery 9, the piping in the second flow channel 3 is not involved. When cooling the battery 9, the coolant in the first flow channel 2 circulates, removing heat from the battery 9. The coolant is then cooled by the refrigerant in the second flow channel 3, achieving continuous cooling of the battery 9. When cooling the battery 9, the coolant flows from the first medium inlet 4 to the first medium outlet 5. The coolant temperature rises near the first medium outlet 5, affecting the temperature of the battery cold plate near the first medium outlet 5, resulting in uneven temperature of the battery cold plate and, in turn, affecting the cooling effect on the battery 9. In the present invention, the flow directions of the first medium and the second medium are opposite, allowing the refrigerant to cool the coolant at the first medium outlet 5 first, which helps ensure temperature uniformity across the battery cold plate. For example, the first medium inlet 4 is positioned near the second medium outlet 7, and the first medium outlet 5 is positioned near the second medium inlet 6. By making the number of first medium inlets 4 correspond to the number of second medium outlets 7, and the number of first medium outlets 5 correspond to the number of second medium inlets 6, the number of channels of the first flow channel 2 and the second flow channel 3 can be increased. The refrigerant can cool the coolant separately through multiple channels, effectively improving the problem of inconsistent cooling effect on the coolant due to unstable refrigerant flow, which in turn causes uneven battery cold plate.

[0036] The battery cold plate also includes a support plate 8, which is connected to the side of the flow channel plate 1 facing away from the first flow channel 2. The battery 9 is mounted on this support plate 8. The direct connection between the support plate 8 and the battery 9 facilitates the temperature equalization of the flow channel plate 1 when the coolant flows in the second flow channel 3, thereby reducing the temperature difference between different positions on the battery cold plate.

[0037] The first flow channel 2 is integrally formed with the flow channel plate 1, and the second flow channel 3 is detachably mounted on the flow channel plate 1. Specifically, the second flow channel 3 has an open structure on the side adjacent to the flow channel plate 1. This open structure is connected to the flow channel plate 1 via brazing, laser welding, or gluing to reduce the weight of the battery cold plate.

[0038] The first flow channel 2 can be configured as a closed structure with a hollow interior, or as an open structure on the side close to the flow channel plate 1 . The open structure on the side close to the flow channel plate 1 can reduce the weight of the battery cold plate.

[0039] In some embodiments, as Figure 2-Figure 4As shown, there is one first medium inlet 4 and two first medium outlets 5. The first flow channel 2 includes a first inlet flow channel 21 and two first branch flow channels 22. One end of the first inlet flow channel 21 has the first medium inlet 4, and the other end of the first inlet flow channel 21 is connected to the head ends of the two first branch flow channels 22 respectively. The end of each first branch flow channel 22 has the first medium outlet 5 to form a first outlet flow channel. The first flow channel 2 includes a first inlet flow channel 21 and two first branch flow channels 22. After the coolant enters the first inlet flow channel 21 from the first medium inlet 4, it enters the two branch flow channels respectively and flows out through the first medium outlet 5 on the first outlet flow channel. The portion of the first branch flow channel 22 near the first medium outlet 5 is the first outlet flow channel. The coolant can enter the two first branch flow channels 22 at the same time. Compared with only providing a single coolant flow channel, the increase in the number of first branch flow channels 22 is conducive to improving the cooling efficiency of the battery 9.

[0040] Exemplarily, the two first branch flow channels 22 are respectively disposed on both sides of the first inlet flow channel 21 .

[0041] The first branch flow channel 22 is serpentine-shaped. The length of the first branch flow channel 22 is extended as much as possible within a limited space, which is beneficial to improving the cooling effect.

[0042] There are two second medium inlets 6 and one second medium outlet 7. The second flow channel 3 includes two second branch flow channels 31 and a second outlet flow channel 32. Each second branch flow channel 31 has a second medium inlet 6 at its head end, forming a second inlet flow channel. The two second branch flow channels 31 are connected at their ends and connected to one end of the second outlet flow channel 32. The other end of the second outlet flow channel 32 has a second medium outlet 7. The second flow channel 3 includes two second branch flow channels 31 and a second outlet flow channel 32. Refrigerant enters the two second branch flow channels 31 from the second medium inlet 6, then merges and enters the second outlet flow channel 32, flowing out through the second medium outlet 7. Refrigerant can enter both second branch flow channels 31 simultaneously. The refrigerant in both second branch flow channels 31 cools the coolant. The refrigerant in the two second branch flow channels 31 has separate flow paths, improving the cooling efficiency of the coolant.

[0043] Exemplarily, the two second branch flow channels 31 are respectively provided on both sides of the second outlet flow channel 32 .

[0044] The second branch flow channel 31 is serpentine-shaped. The length of the second branch flow channel 31 is extended as much as possible within a limited space, which is beneficial to improving the cooling effect.

[0045] The first medium inlet 4 and the two first medium outlets 5 are located on one side of the flow channel plate 1, and the two second medium inlets 6 and the second medium outlet 7 are located on the other side of the flow channel plate 1. In this embodiment, one side of the flow channel plate 1 and the other side of the flow channel plate 1 refer to two sides along the length direction of the flow channel plate 1. In this embodiment, a coolant pipeline is connected between the first medium inlet 4 and the first medium outlet 5, and a refrigerant pipeline is connected between the second medium inlet 6 and the second medium outlet 7. The first medium inlet 4 is arranged near the first medium outlet 5 and the two are located on one side of the flow channel plate 1, and the second medium inlet 6 is arranged near the second medium outlet 7 and the two are located on the other side of the flow channel plate 1, so as to minimize the intersection of the coolant pipeline and the refrigerant.

[0046] like Figure 6 As shown, the utility model also discloses another battery cold plate, which is similar to the above battery cold plate. Figures 1 to 5 The battery cold plate shown has different locations for its first medium outlet 5 and second medium inlet 6. In this embodiment, the first medium inlet 4 is not located near the first medium outlet 5, and the second medium inlet 6 is not located near the second medium outlet 7. Instead, the first medium outlet 5 and the second medium inlet 6 are located near the center of the flow channel plate 1. That is, the first outlet flow channel and the second inlet flow channel are located near the center of the flow channel plate 1, and there is no restriction on the location of the first medium inlet 4 and the second medium inlet 7. Because the center of the battery 9 generates higher heat, the first medium outlet 5 and the second medium inlet 6 are located near the center of the flow channel plate 1, that is, near the center of the battery 9. When the temperature of the coolant flowing out of the first medium outlet 5 rises, refrigerant can be promptly introduced into the second medium inlet 6 to cool the coolant near the center of the battery 9, thereby ensuring effective cooling of the battery 9.

[0047] like Figure 1-Figure 5 As shown, the first flow channel 2 includes multiple first flow channel segments formed by multiple bends. The second flow channel segment formed by the bends of the second flow channel 3 is located in the gap between the first flow channel segments, which can optimize the structural layout and reduce the space occupied. There is a gap between the first flow channel segment and the second flow channel segment, or the first flow channel segment and the second flow channel segment are closely connected. The refrigerant in the second flow channel 3 cools the coolant more effectively. The first flow channel segment refers to the first inlet flow channel 21 and the first branch flow channel 22, and the second flow channel segment refers to the second branch flow channel 31 and the second outlet flow channel 32.

[0048] like Figure 7 and Figure 8As shown, the present invention also discloses another battery cold plate, the second flow channel 3 includes multiple second flow channel segments formed by multiple bends, the first flow channel segment formed by bending the first flow channel 2 is located in the gap of the second flow channel segment, and the structural layout can also be optimized to reduce the occupied space. There is a gap between the first flow channel segment and the second flow channel segment, or the first flow channel segment and the second flow channel segment are fitted together to ensure the cooling effect when the refrigerant in the second flow channel 3 cools the coolant.

[0049] The utility model also discloses a vehicle, comprising the battery cold plate.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0051] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0052] In the description of the present invention, “plurality” means two or more.

[0053] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0054] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0055] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cold plate, characterized in that: The invention comprises a flow channel plate, a first flow channel and a second flow channel, wherein the first flow channel and the second flow channel are arranged on the flow channel plate, and the first flow channel and the second flow channel are arranged alternately, the first flow channel is provided with a first medium inlet and a first medium outlet, the second flow channel is provided with a second medium inlet and a second medium outlet, the flow direction of the first medium in the first flow channel is opposite to the flow direction of the second medium in the second flow channel, the number of the first medium inlets corresponds to the number of the second medium outlets, and the number of the first medium outlets corresponds to the number of the second medium inlets.

2. The battery cold plate according to claim 1, characterized in that: There is one first medium inlet and two first medium outlets. The first flow channel includes a first inlet flow channel and two first branch flow channels. One end of the first inlet flow channel has the first medium inlet, and the other end of the first inlet flow channel is respectively connected to the head ends of the two first branch flow channels. The end of each first branch flow channel has the first medium outlet to form a first outlet flow channel.

3. The battery cold plate according to claim 2, characterized in that: There are two second medium inlets and one second medium outlet. The second flow channel includes two second branch flow channels and a second outlet flow channel. The head end of each second branch flow channel has a second medium inlet to form a second inlet flow channel. The ends of the two second branch flow channels are connected and connected to one end of the second outlet flow channel. The other end of the second outlet flow channel has a second medium outlet.

4. The battery cold plate according to claim 3, characterized in that: The first branch flow channel is serpentine-shaped, and the second branch flow channel is serpentine-shaped.

5. The battery cold plate according to claim 3, characterized in that: The first medium inlet and the two first medium outlets are located on one side of the flow channel plate, and the two second medium inlets and the second medium outlets are located on the other side of the flow channel plate.

6. The battery cold plate according to claim 3, characterized in that: The first outlet flow channel and the second inlet flow channel are arranged near the middle of the flow channel plate.

7. The battery cold plate according to claim 1, characterized in that: The first flow channel and the flow channel plate are an integrated structure, and the second flow channel is detachably mounted on the flow channel plate.

8. The battery cold plate according to claim 1, characterized in that The first flow channel includes a plurality of first flow channel segments formed by multiple bends, and the second flow channel segment formed by the second bend is located in the gap between the first flow channel segments.

9. The battery cold plate according to claim 3, characterized in that: It also includes a support plate, which is connected to a side of the flow channel plate facing away from the first flow channel, and the battery is installed on the support plate.

10. A vehicle, characterized in that: The battery cold plate comprises the battery cold plate according to any one of claims 1 to 9.

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