Liquid cooling plate

Abstract

Some embodiments of the utility model disclose a liquid cooling plate, which comprises a main body part, a liquid cooling plate and a liquid cooling plate, the beam part surrounds the main body part, the beam part comprises a first beam part, the first beam part is provided with a liquid inlet current collector and a liquid return current collector, and the liquid inlet current collector is communicated to the liquid return current collector through a flow channel of the main body part; wherein the liquid inlet current collector and the liquid return current collector are arranged side by side in the first direction, and the extending directions of the liquid inlet current collector and the liquid return current collector are different from and intersect with the first direction. According to the liquid cooling plate provided by the utility model, the inlet and outlet positions can be respectively arranged at any positions in the respective extension directions of the inlet liquid current collector and the return liquid current collector, so that the arrangement requirements of the liquid inlet and outlet positions under various conditions of insufficient space can be met.

Description

Technical Field

[0001] The present application relates to the field of batteries, and more specifically, provides a liquid cooling plate. Background Art

[0002] With the development of the new energy vehicle industry, batteries are widely used in new energy vehicles as power output devices. Batteries generate a lot of heat during operation. Since the performance of batteries is closely related to the operating temperature, too high or too low temperature will cause the battery performance to decline, and even cause safety accidents such as combustion and explosion. In order to prevent the heat generated during the operation of the battery from affecting the battery, the prior art usually adds a liquid cooling plate at the bottom of the battery cell to conduct the heat away in time, so as to control the operating temperature of the battery within an appropriate range.

[0003] However, the current collector design in the existing liquid cooling plate is unreasonable, and the liquid inlet and outlet positions are limited. With the development of the new energy vehicle industry, the space for liquid cooling plates is getting smaller and smaller. This design with limited liquid inlet and outlet positions is difficult to meet the layout requirements in various situations where there is insufficient space. Therefore, it is becoming increasingly important to urgently need a liquid cooling plate that is easy to set the liquid inlet and outlet positions to meet the layout requirements of the liquid inlet and outlet positions in various situations where there is insufficient space. Utility Model Content

[0004] In response to the above problems existing in the prior art, the present application provides a liquid cooling plate, the inlet and outlet positions of which can be respectively set at any position in the extension direction of the liquid inlet collector and the liquid return collector, thereby meeting the layout requirements of the liquid inlet and outlet positions in various situations where space is insufficient.

[0005] According to one aspect of the present application, a liquid cooling plate is provided, comprising: a main body portion, the main body portion comprising a flow channel; and a beam portion, the beam portion surrounding the main body portion, the beam portion comprising a first beam portion, the first beam portion having a liquid inlet collector and a liquid return collector, wherein the liquid inlet collector is connected to the liquid return collector through the flow channel of the main body portion; wherein the liquid inlet collector and the liquid return collector are arranged side by side along a first direction, and respective extension directions of the liquid inlet collector and the liquid return collector are different from and intersect with the first direction.

[0006] In one or more embodiments, the liquid cold plate further includes a liquid inlet joint connected to the liquid inlet current collector and a liquid return joint connected to the liquid return current collector.

[0007] In one or more embodiments, the liquid inlet joint is arranged in the middle of the liquid inlet current collector along the extension direction of the liquid inlet current collector, and the liquid return joint is arranged in the middle of the liquid return current collector along the extension direction of the liquid return current collector.

[0008] In one or more embodiments, the first direction is the length direction of the liquid cooling plate, and the extension direction of the liquid inlet current collector and the liquid return current collector is the width direction of the liquid cooling plate.

[0009] In one or more embodiments, the extension direction of the liquid inlet current collector and the extension direction of the liquid return current collector are parallel to each other.

[0010] In one or more embodiments, the beam portion also includes a second beam portion, which connects the opposite ends of the first beam portion to surround the main body portion, and the second beam portion includes a liquid return fluid, wherein the liquid inlet collector, the flow channel, the liquid return fluid and the liquid return collector are connected in sequence.

[0011] In one or more embodiments, the first beam portion and the second beam portion each include an inner frame portion and an outer frame portion, the inner frame portions of the first beam portion and the second beam portion are respectively connected together to form an inner frame surrounding the main body portion, and the outer frame portions of the first beam portion and the second beam portion are respectively connected together to form an outer frame surrounding the inner frame, wherein the liquid inlet collector and the liquid return collector are arranged in the inner frame portion of the first beam portion, and the liquid return collector is arranged in the inner frame portion of the second beam portion.

[0012] In one or more embodiments, the height of the outer frame is greater than the height of the inner frame.

[0013] In one or more embodiments, the interior of the outer frame includes a cavity.

[0014] In one or more embodiments, the first beam portion is a first side beam, the second beam portion includes a second side beam opposite to the first side beam, and a first side beam and a second side beam opposite to each other, the first side beam and the second side beam connect the first side beam and the second side beam to surround the main body portion, wherein the second side beam, the first side beam and the second side beam each include their own liquid return confluence sections, and the respective liquid return confluence sections are interconnected to form a liquid return confluence fluid.

[0015] In the above-mentioned technical solution of the present application, the first beam part has a liquid inlet collector and a liquid return collector. By arranging the liquid inlet collector and the liquid return collector side by side along the first direction, and the extension directions of the liquid inlet collector and the liquid return collector are different from and intersect with the first direction, at least the liquid inlet and outlet positions of the liquid cooling plate can be respectively set at any position on the extension directions of the liquid inlet collector and the liquid return collector, so that the arrangement of the liquid inlet and outlet positions can meet the requirements of various situations where there is insufficient space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. It is worth noting that according to the standard practice of the industry, the various components are not drawn to scale and are only used for illustration purposes. In fact, for the clarity of discussion, the size of each component can be arbitrarily increased or reduced.

[0017] Figure 1 A schematic diagram of a liquid cooling plate according to an embodiment of the present application is shown.

[0018] Figure 2 A schematic top view of the internal structure of a liquid cooling plate according to an embodiment of the present application is shown.

[0019] Figure 3 An enlarged schematic diagram showing a portion of the internal structure of a liquid cooling plate according to an embodiment of the present application is shown.

[0020] Figure 4 The embodiment according to the present application is shown Figure 1 An enlarged schematic diagram of a portion of a liquid cooling plate.

[0021] Figure 5 A schematic diagram of a battery pack according to an embodiment of the present application is shown.

[0022] Figure 6 A schematic diagram showing the flow of liquid in part of a liquid cooling plate according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0024] The following disclosure provides many different embodiments or examples for realizing different features of the provided subject matter. Specific examples of components and arrangements will be described below to simplify the present invention. Of course, these are merely examples and are not intended to limit the present invention. For example, in the following description, forming a first component above or on a second component may include an embodiment in which the first component and the second component are in direct contact, and may also include an embodiment in which an additional component is formed between the first component and the second component so that the first component and the second component may not be in direct contact. Moreover, the present invention may repeatedly refer to numbers and / or letters in various examples. This repetition is only for simplicity and clarity, and does not itself represent the relationship between the various embodiments and / or configurations discussed.

[0025] In addition, the embodiments in the present application and the features in the embodiments may be combined with each other in the absence of conflicts. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be understood that the specific structures shown in the drawings are only for the sake of convenience of explanation and are not intended to limit the present application. When describing a specific figure, other structures not described in the drawings may be provided according to actual needs and are not intended to limit the present application.

[0026] As the battery capacity of power batteries increases, charging speed increases, and output power increases, the heat generated by the batteries has also increased a lot compared to before, which has put more challenges on the heat dissipation capacity of the battery thermal management system. Liquid cooling plates are widely used in batteries as an effective heat dissipation method to accurately control the operating temperature of the battery. Usually, a single channel is arranged at the front end of the liquid cooling plate for both liquid inlet and liquid return, which makes the liquid inlet and outlet positions limited to a certain position in the width direction of the liquid cooling plate, resulting in limited liquid inlet and outlet positions, which is difficult to meet the layout requirements in various space shortage situations. In addition, most existing liquid cooling plates are U-shaped or S-shaped designs with long flow paths and large liquid temperature differences at the liquid inlet and outlet positions, which will have an adverse effect on the performance of the battery.

[0027] The liquid cooling plate provided in the embodiment of the present application is configured such that the first beam portion has a liquid inlet collector and a liquid return collector arranged side by side along a first direction, and the extension directions of the liquid inlet collector and the liquid return collector are different from and intersect with the first direction, so that at least the inlet and outlet positions can be respectively set at any position on the extension directions of the liquid inlet collector and the liquid return collector, thereby meeting the requirements for the arrangement of the liquid inlet and outlet positions in various situations where space is insufficient.

[0028] Figure 1 1 shows a schematic diagram of a liquid cooling plate 100 according to an embodiment of the present application. Figure 2 FIG. 1 is a top view schematic diagram showing the internal structure of the liquid cooling plate 100 according to an embodiment of the present application. Figure 1 and Figure 2As shown, in some embodiments, the liquid cold plate 100 includes a main body portion 102 and a beam portion 104 surrounding the main body portion 102. The main body portion 102 includes a flow channel 102s, and the beam portion 104 includes a first beam portion 104A having a liquid inlet current collector 106 and a liquid return current collector 108, and the liquid inlet current collector 106 is connected to the liquid return current collector 108 through the flow channel 102s of the main body portion 102. The liquid inlet current collector 106 and the liquid return current collector 108 are arranged side by side along a first direction X, and the extension directions of the liquid inlet current collector 106 and the liquid return current collector 108 are different from and intersect with the first direction X. Therefore, compared with the single-channel liquid cooling plate, the liquid cooling plate 100 of the embodiment of the present application is provided with a liquid inlet current collector 106 and a liquid return current collector 108 by making the first beam portion 104A of the beam portion 104, and making the liquid inlet current collector 106 and the liquid return current collector 108 arranged side by side along a first direction X that is different from and intersects the respective extension directions of the liquid inlet current collector 106 and the liquid return current collector 108, so that the liquid inlet position and the outlet position of the liquid cooling plate 100 can be respectively set at any position on the liquid inlet current collector 106 and the liquid return current collector 108, thereby meeting the arrangement requirements of the liquid inlet and outlet positions in various situations where space is insufficient. In other words, the liquid inlet and outlet positions of the liquid cooling plate 100 of the embodiment of the present application can be arranged on the liquid inlet current collector 106 and the liquid return current collector 108 without restriction in the respective extension directions of the liquid inlet current collector 106 and the liquid return current collector 108, so that the arrangement of the liquid inlet and outlet positions can meet the requirements in various situations where space is insufficient. In addition, by disposing both the liquid inlet collector 106 and the liquid return collector 108 in the first beam portion 104A and adjusting the size of the first beam portion 104A (eg, width), the position of the liquid inlet and outlet on the liquid cooling plate 100 (eg, length) can be changed.

[0029] In order to more clearly illustrate the arrangement of the liquid inlet current collector 106 and the liquid return current collector 108 in the first beam portion 104A, Figure 3 The embodiment according to the present application is shown Figure 1 FIG. 1 is an enlarged schematic diagram of the internal structure of a portion of the liquid cooling plate 100 (at the location of the region 120). Figure 2 and Figure 3 As shown, in some embodiments, the liquid return current collector 108, the liquid inlet current collector 106 and the main body 102 are arranged in sequence along the first direction X, and the liquid return current collector 108 and the liquid inlet current collector 106 extend in the second direction Y. Figure 2As shown, the first direction X may be the length direction of the liquid cooling plate 100, and the extension direction of the liquid inlet current collector 106 and the liquid return current collector 108 may be the width direction of the liquid cooling plate 100 (i.e., the second direction Y). In some embodiments, the extension direction of the liquid inlet current collector 106 and the extension direction of the liquid return current collector 108 are parallel to each other, that is, the liquid inlet current collector 106 and the liquid return current collector 108 both extend in the second direction Y. In some embodiments, the first direction X is perpendicular to the second direction Y. In some embodiments, the liquid cooling plate 100 may have a rectangular parallelepiped shape, however, the present application is not limited thereto, and the liquid cooling plate 100 may also have any other suitable shape. Since the liquid inlet current collector 106 and the liquid return current collector 108 are arranged side by side in the first beam portion 104A along the first direction X instead of both along the second direction Y, the liquid can be used for inflow and reflux respectively through the two channels arranged side by side, so the liquid cooling plate 100 of the embodiment of the present application can be called a dual-collecting channel liquid cooling plate. Compared with the existing single-collecting channel liquid cooling plate, the liquid inlet and outlet positions of the dual-collecting channel liquid cooling plate of the embodiment of the present application can be arranged along the second direction Y at any position on the liquid inlet collector 106 and the liquid return collector 108.

[0030] Figure 4 The embodiment according to the present application is shown Figure 1 FIG. 1 is an enlarged schematic diagram of a portion of the liquid cooling plate 100 (at the location of the region 120). Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the liquid cooling plate 100 further includes a liquid inlet joint 116 connected to the liquid inlet current collector 106 and a liquid return joint 118 connected to the liquid return current collector 108. Since in the liquid cooling plate 100 of the embodiment of the present application, the liquid inlet current collector 106 and the liquid return current collector 108 are arranged side by side in the first beam portion 104A along the first direction X instead of being arranged along the second direction Y, the liquid inlet joint 116 and the liquid return joint 118 can be arranged at any position on the liquid inlet current collector 106 and the liquid return current collector 108 along their respective extension directions (i.e., the second direction Y).

[0031] For example, in one embodiment, the liquid inlet joint 116 is disposed at the middle of the liquid inlet current collector 106 along the extension direction of the liquid inlet current collector 106, and the liquid return joint 118 is disposed at the middle of the liquid return current collector 108 along the extension direction of the liquid return current collector 108. In an embodiment where the liquid inlet current collector 106 and the liquid return current collector 108 both extend in the second direction Y, the liquid inlet joint 116 is disposed at about half of the length of the liquid inlet current collector 106 along the liquid inlet current collector 106, preferably at the middle of the liquid inlet current collector 106, and the liquid return joint 118 is disposed at about half of the length of the liquid return current collector 108 along the liquid return current collector 108, preferably at the middle of the liquid return current collector 108. However, the present application is not limited thereto, for example, the liquid inlet joint 116 and the liquid return joint 118 may be disposed at the ends of the liquid inlet current collector 106 and the liquid return current collector 108, respectively.

[0032] Return to reference Figure 1 and Figure 3 As shown, in some embodiments, the beam portion 104 further includes a second beam portion 104B, the second beam portion 104B connects the opposite ends of the first beam portion 104A to surround the main body portion 102, the second beam portion 104B includes a liquid return sink 110, and the liquid inlet collector 106, the flow channel 102s, the liquid return sink 110 and the liquid return collector 108 are sequentially connected. That is, after the liquid flows into the liquid inlet collector 106, it then flows into the flow channel 102s of the main body portion 102, and then flows back to the liquid return collector 108 through the liquid return sink 110 in the second beam portion 104B.

[0033] In some embodiments, the first beam portion 104A is a first side beam, and the second beam portion 104B includes a second side beam 104B1 opposite to the first side beam, and a first side beam 104B2 and a second side beam 104B3 opposite to each other, the first side beam 104B2 and the second side beam 104B3 connect the first side beam and the second side beam 104B1 to surround the main body portion 102, and the second side beam 104B1, the first side beam 104B2 and the second side beam 104B3 each include their own return liquid confluence sections, and their respective return liquid confluence sections are interconnected to form a return liquid confluence fluid 110. In other words, the return liquid confluence fluid 110 can pass through the second side beam 104B1, the first side beam 104B2 and the second side beam 104B3 to return the liquid flowing out of the flow channel 102s to the return liquid collector 108. Compared with the U-shaped or S-shaped flow channels designed with longer flow paths in the existing main body, in the liquid cooling plate 100 of the embodiment of the present application, the liquid flowing into the liquid inlet collector 106 passes through the flow channel 102s of the main body 102 and the liquid return confluence fluid 110 in the second beam part 104B in sequence, and flows back into the liquid return collector 108. This can be achieved, for example, by setting the flow channel 102s to be a plurality of non-U-shaped flow channels whose two ends are respectively connected to the liquid inlet collector 106 and the liquid return confluence fluid 110, so as to shorten the flow path length of each non-U-shaped flow channel, thereby making the overall temperature distribution of the liquid cooling plate 100 uniform and the liquid temperature difference at the liquid inlet and outlet positions smaller.

[0034] Combined with reference Figures 1 to 3 In some embodiments, the first beam portion 104A and the second beam portion 104B each include an inner frame portion and an outer frame portion, the inner frame portions of the first beam portion 104A and the second beam portion 104B are connected together to form an inner frame 112 surrounding the main body portion 102, the outer frame portions of the first beam portion 104A and the second beam portion 104B are connected together to form an outer frame 114 surrounding the inner frame 112, the liquid inlet current collector 106 and the liquid return current collector 108 are disposed in the inner frame portion of the first beam portion 104A, and the liquid return current collector 110 is disposed in the inner frame portion of the second beam portion 104B. Figure 3 As shown, in some embodiments, the height of the outer frame 114 is greater than the height of the inner frame 112. Figure 3 As shown in FIG, the inner frame 112 with a lower height is located at the lower part of the outer frame 114 with a higher height, so that the cross section of the beam portion 104 is L-shaped. In some embodiments, the inner part of the outer frame 114 may include a single or multiple cavities 114C. By providing the cavity 114C in the outer frame 114, the weight of the liquid cold plate 100 can be reduced.

[0035] Combined with reference Figures 1 to 3In the embodiment where the second beam portion 104B includes the second side beam 104B1, the first side beam 104B2, and the second side beam 104B3, the inner frame portions of the second side beam 104B1, the first side beam 104B2, and the second side beam 104B3 are connected together, and the outer frame portions of the second side beam 104B1, the first side beam 104B2, and the second side beam 104B3 are connected together, and the return liquid collector 110 passes through the inner frame portions of the second side beam 104B1, the first side beam 104B2, and the second side beam 104B3. In the embodiment where the beam portion 104 is composed of the first beam portion 104A and the second beam portion 104B, the inner frame 112 and the outer frame 114 together form the beam portion 104, and the liquid inlet collector 106, the liquid return collector 108, and the liquid return collector 110 are all disposed in the inner frame 112, and the outer frame 114 extends from the inner frame 112 away from the main body portion 102. In this embodiment, by arranging the liquid inlet current collector 106 and the liquid return current collector 108 in the inner frame portion of the first beam portion 104A, the position and size of the liquid inlet current collector 106 and the liquid return current collector 108 can be changed by adjusting the size of the inner frame portion of the first beam portion 104A (for example, the height and width of the inner frame 112). In addition, the width of the inner frame portion of the first beam portion 104A can be adjusted to change the position of the liquid inlet and outlet in the length direction of the liquid cooling plate 100.

[0036] Return to reference Figure 2 In some embodiments, the liquid inlet current collector 106 extends over the entire width of the main body 102, that is, the length of the liquid inlet current collector 106 is equal to the width of the main body 102. In addition, the length of the liquid return current collector 108 is slightly greater than the length of the liquid inlet current collector 106 to communicate with the portion of the liquid return current collector 110 in the first side beam 104B2 and the second side beam 104B3. In the embodiment where the length of the liquid inlet current collector 106 is equal to the width of the main body 102, the liquid inlet and outlet of the liquid cold plate 100 can be arranged at any position in the width direction of the main body 102.

[0037] Figure 5 1 shows a schematic diagram of a battery pack 200 according to an embodiment of the present application. Figure 5 FIG. 1 is a schematic diagram showing the flow of liquid in the liquid cooling plate 100. For simplicity, Figure 5 The outer frame 114 is not shown. In addition, only the liquid cooling plate 100 is described here, and the other parts of the battery pack 200 will be described later. Figure 6 The liquid according to the embodiment of the present application is shown in Figure 2 Schematic diagram of the flow in a portion (i.e., region 122) of the liquid cooling plate 100. Figure 2 , Figure 5 and Figure 6As shown, the flow channel 102s of the main body 102 includes a first S-shaped flow channel 102s1, a second S-shaped flow channel 102s2, a third S-shaped flow channel 102s3 and a fourth S-shaped flow channel 102s4 arranged in sequence from the second side beam 104B3 toward the first side beam 104B2 (i.e., the second direction Y), and a first liquid inlet 106A1 connected to the first S-shaped flow channel 102s1, a second liquid inlet 106A2 connected to the second S-shaped flow channel 102s2, a third S-shaped flow channel 102s3 and a fourth S-shaped flow channel 102s4 are provided between the liquid inlet collector 106 of the first beam portion 104A and the main body 102. A third liquid inlet 106A3 of the flow channel 102s3, and a fourth liquid inlet 106A4 connected to the fourth S-shaped flow channel 102s4, and a first liquid outlet 110A1 connected to the first S-shaped flow channel 102s1, a second liquid outlet 110A2 connected to the second S-shaped flow channel 102s2, a third liquid outlet 110A3 connected to the third S-shaped flow channel 102s3, and a fourth liquid outlet 110A4 connected to the fourth S-shaped flow channel 102s4 are provided between the liquid return confluence section of the liquid return confluence fluid 110 located in the second side beam 104B1 and the main body 102.

[0038] In this embodiment, the liquid flowing into the liquid inlet current collector 106 flows into the first S-shaped flow channel 102s1, the second S-shaped flow channel 102s2, the third S-shaped flow channel 102s3 and the fourth S-shaped flow channel 102s4 (for example, Figure 5 The liquid flows into the liquid return confluence section of the liquid return confluence fluid 110 located in the second side beam 104B1 through the first liquid outlet 110A1, the second liquid outlet 110A2, the third liquid outlet 110A3 and the fourth liquid outlet 110A4 respectively. The liquid is then divided into two parts and flows back to the liquid return confluence fluid 108 through the two ends of the liquid return confluence fluid 108 through the liquid return confluence sections located in the first side beam 104B2 and the second side beam 104B3 of the liquid return confluence fluid 110 (for example, Figure 5 and Figure 6 The liquid cooling plate 100 of the embodiment of the present application can realize multiple S-shaped flow channels in the main body 102, shortening the path length of each S-shaped flow channel, thereby making the temperature distribution uniform and the temperature difference at the liquid inlet and outlet positions smaller. Figure 5 , four parallel S-shaped flow channels are provided in the main body portion 102. However, the present application is not limited thereto, and for example, only a single S-shaped flow channel or more than four S-shaped flow channels may be provided in the main body portion 102.

[0039] Combined with reference Figure 2 and Figure 5As shown, in a further embodiment, the interval between the second S-shaped flow channel 102s2 and the third S-shaped flow channel 102s3 is greater than the interval between the first S-shaped flow channel 102s1 and the second S-shaped flow channel 102s1, and greater than the interval between the third S-shaped flow channel 102s3 and the fourth S-shaped flow channel 102s4. In this embodiment, at the interval between the second S-shaped flow channel 102s2 and the third S-shaped flow channel 102s3, a fifth liquid outlet 110A5 and a sixth liquid outlet 110A6 are provided between the liquid return confluence section of the liquid return confluence fluid 110 located in the second side beam 104B1 and the main body 102, and the main body 102 may be provided with a transverse flow channel connected to the fifth liquid outlet 110A5 and the sixth liquid outlet 110A6, respectively, at this position. In this embodiment, the liquid in the second S-shaped flow channel 102s2 and the third S-shaped flow channel 102s3 may flow into the transverse flow channel, so that the liquid flowing into the transverse flow channel may flow into the liquid return confluence fluid 110 through the fifth liquid outlet 110A5 and the sixth liquid outlet 110A6.

[0040] Next reference Figures 1 to 3 As shown, in some embodiments, the beam portion 104 and the main body portion 102 are connected together by welding. Generally speaking, due to the design of the flow channel and the current collector, the design in the prior art requires two airtightness tests before and after welding, that is, before welding, the main body is tested for airtightness, and after welding, the entire liquid cooling plate is tested for airtightness. However, the liquid cooling plate 100 of the embodiment of the present application can reserve the liquid inlet current collector 106 and the liquid return current collector 108 in the first beam portion 104A, so that after the cold plate 102 and the beam portion 104 are welded as a whole, an airtightness test is performed, which can reduce the production process.

[0041] Return to reference Figure 5 As shown, according to another aspect of the present application, a battery pack 200 is provided, the battery pack 200 includes a battery module 202 and a liquid cooling plate 100 located below the battery module 202. The liquid cooling plate 100 can be any of the above-mentioned liquid cooling plates in the embodiments of the present application. In order to facilitate the description of the flow of liquid in the liquid cooling plate 100, although Figure 5 The liquid cooling plate 100 is shown as being located above the battery module 202, however, it is understood that the liquid cooling plate 100 is located below the battery module 202. Figure 1 and Figure 5 As shown, in some embodiments, the liquid cooling plate 100 includes a protrusion 128 at a middle position in the second direction Y, and the protrusion 128 separates the battery modules 202. In some embodiments where the cross section of the beam portion 104 is L-shaped, the shape of the beam portion 104 can match the envelope of the entire battery pack 200.

[0042] The liquid cooling plate 100 provided by the utility model makes the liquid inlet and outlet positions of the liquid cooling plate 100 easier to set by arranging the liquid inlet and outlet current collectors 106 and the liquid return current collectors 108 side by side in the first beam portion 104A along the first direction X, and the extension directions of the liquid inlet and outlet current collectors 106 and the liquid return current collectors 108 are different from and intersect with the first direction X, so that the arrangement of the liquid inlet and outlet positions can meet the requirements of various situations where there is insufficient space. In addition, by arranging the liquid inlet and outlet current collectors 106 and the liquid return current collectors 108 side by side in the first beam portion 104A along the first direction X, arranging the liquid return confluence fluid 110 in the second beam portion 104B, and by connecting the liquid inlet and outlet current collectors 106, the flow channel 102s, the liquid return confluence fluid 110 and the liquid return current collectors 108 in sequence, a plurality of shorter non-U-shaped liquid cooling flow channels can be arranged in the main body portion 102, which can make the temperature distribution uniform and the temperature difference at the liquid inlet and outlet positions smaller.

[0043] It should be understood that the various features of the various embodiments of the present application can be replaced and combined. The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any combination of the various embodiments within the spirit and principle of the present application, as well as any modification, equivalent replacement, improvement, etc. made to the embodiments, shall be included in the protection scope of the present application.

Claims

1. A liquid cooling plate, characterized in that: include: a main body portion, the main body portion comprising a flow channel; and A beam portion, the beam portion surrounds the main body portion, the beam portion includes a first beam portion, the first beam portion has a liquid inlet current collector and a liquid return current collector, wherein the liquid inlet current collector is connected to the liquid return current collector through the flow channel of the main body portion; The liquid inlet current collector and the liquid return current collector are arranged side by side along a first direction, and the extension directions of the liquid inlet current collector and the liquid return current collector are different from and intersect with the first direction.

2. The liquid cooling plate according to claim 1, characterized in that: It also includes a liquid inlet joint connected to the liquid inlet current collector and a liquid return joint connected to the liquid return current collector.

3. The liquid cooling plate according to claim 2, characterized in that: The liquid inlet joint is arranged at the middle of the liquid inlet current collector along the extension direction of the liquid inlet current collector, and the liquid return joint is arranged at the middle of the liquid return current collector along the extension direction of the liquid return current collector.

4. The liquid cooling plate according to claim 1, characterized in that: The first direction is the length direction of the liquid cooling plate, and the extension direction of the liquid inlet current collector and the liquid return current collector is the width direction of the liquid cooling plate.

5. The liquid cooling plate according to claim 4, characterized in that: An extension direction of the liquid inlet current collector and an extension direction of the liquid return current collector are parallel to each other.

6. The liquid cooling plate according to claim 1, characterized in that: The beam portion further includes a second beam portion connecting opposite ends of the first beam portion to surround the main body portion, The second beam portion includes a liquid return sink fluid, wherein the liquid inlet collector, the flow channel, the liquid return sink fluid and the liquid return collector are sequentially connected.

7. The liquid cooling plate according to claim 6, characterized in that: The first beam portion and the second beam portion each include an inner frame portion and an outer frame portion, the inner frame portions of the first beam portion and the second beam portion are connected together to form an inner frame surrounding the main body portion, and the outer frame portions of the first beam portion and the second beam portion are connected together to form an outer frame surrounding the inner frame. The liquid inlet current collector and the liquid return current collector are arranged in the inner frame portion of the first beam portion, and the liquid return current collector is arranged in the inner frame portion of the second beam portion.

8. The liquid cooling plate according to claim 7, characterized in that: The height of the outer frame is greater than the height of the inner frame.

9. The liquid cooling plate according to claim 7, characterized in that: The interior of the outer frame includes a cavity.

10. The liquid cooling plate according to claim 6, characterized in that: The first beam portion is a first side beam, the second beam portion includes a second side beam opposite to the first side beam, and a first side beam and a second side beam opposite to each other, the first side beam and the second side beam connecting the first side beam and the second side beam to surround the main body portion, Wherein, the second side beam, the first side beam and the second side beam each include their own liquid return confluence sections, and the respective liquid return confluence sections are interconnected to form the liquid return confluence fluid.

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