Liquid cooling plate assembly, liquid cooling system and battery

Abstract

The present application relates to the technical field of energy storage, and provides a liquid cooling plate assembly, a liquid cooling system and a battery. The liquid cooling plate assembly comprises a current collecting member, and a first liquid cooling plate and a second liquid cooling plate which are located on two sides of the current collecting member. A first circulation channel and a second circulation channel which are communicated with each other are formed in each of the first liquid cooling plate and the second liquid cooling plate. A liquid inlet channel and a liquid outlet channel which are relatively independent are formed in the current collecting member, the liquid inlet channel being separately communicated with the first circulation channel of the first liquid cooling plate and the first circulation channel of the second liquid cooling plate, and the liquid outlet channel being separately communicated with the second circulation channel of the first liquid cooling plate and the second circulation channel of the second liquid cooling plate. The present application can reduce the flow resistance of cooling media, thus improving the cooling effect of liquid cooling plate assemblies.

Description

Liquid cooling plate components, liquid cooling systems and batteries

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 28, 2023, with application number 202311632247.0 and application name “Liquid cooling plate assembly, liquid cooling system and battery”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of energy storage technology, and in particular to a liquid cooling plate assembly, a liquid cooling system, and a battery. Background Art

[0003] With the widespread use of new energy vehicles, batteries are widely used in new energy vehicles as power output devices.

[0004] In related technologies, batteries typically include a housing and multiple battery cells within the housing. The cells generate a significant amount of heat during operation, so liquid cooling plates are installed between adjacent cells to cool them down.

[0005] However, the flow resistance of the cooling medium in the above-mentioned liquid cooling plate assembly is relatively large, which reduces the cooling effect of the liquid cooling plate assembly and further reduces the performance of the battery.

[0006] Summary of the Invention

[0007] In view of the above problems, embodiments of the present application provide a liquid cooling plate assembly, a liquid cooling system, and a battery, which can reduce the flow resistance of the cooling medium and improve the cooling effect of the liquid cooling plate assembly.

[0008] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0009] A first aspect of an embodiment of the present application provides a liquid cooling plate assembly, comprising: a current collecting member and a first liquid cooling plate and a second liquid cooling plate located on both sides of the current collecting member; a first flow channel and a second flow channel are formed in the first liquid cooling plate and the second liquid cooling plate, each of the first liquid cooling plate and the second liquid cooling plate being interconnected;

[0010] A relatively independent liquid inlet channel and liquid outlet channel are formed inside the current collecting member, and the liquid inlet channel is communicated with the first circulation channel of the first liquid cooling plate and the first circulation channel of the second liquid cooling plate respectively;

[0011] The liquid outlet channel is communicated with the second circulation channel of the first liquid cooling plate and the second circulation channel of the second liquid cooling plate respectively.

[0012] In a possible implementation, the liquid inlet channel includes a relatively independent first liquid inlet channel and a second liquid inlet channel, the first liquid inlet channel is connected to the first circulation channel of the first liquid cooling plate, and the second liquid inlet channel is connected to the first circulation channel of the second liquid cooling plate;

[0013] The liquid outlet channel includes a relatively independent first liquid outlet channel and a second liquid outlet channel. The first liquid outlet channel is communicated with the second circulation channel of the first liquid cooling plate, and the second liquid outlet channel is communicated with the second circulation channel of the second liquid cooling plate.

[0014] In a possible implementation, the current collecting member includes a current collecting plate, a first current collecting pipe, and a second current collecting pipe;

[0015] The current collecting plate includes a first accommodating cavity with openings at both ends, a current collecting partition is provided in the first accommodating cavity, and the current collecting partition divides the first accommodating cavity into a liquid inlet channel and a liquid outlet channel arranged at intervals along a first direction;

[0016] The first manifold is provided on an area of ​​the manifold plate opposite to the liquid inlet channel to separate the liquid inlet channel into a first liquid inlet channel and a second liquid inlet channel, wherein the first liquid inlet channel and the second liquid inlet channel are respectively located on two sides of the first manifold;

[0017] The second manifold is disposed on an area of ​​the manifold plate opposite to the liquid outlet channel to separate the liquid outlet channel into a first liquid outlet channel and a second liquid outlet channel. The first liquid outlet channel and the second liquid outlet channel are respectively located on both sides of the second manifold.

[0018] In a possible implementation, the current collecting plate includes a first through hole and a second through hole that are spaced apart from each other, the first current collecting pipe is disposed in the first through hole, and the second current collecting pipe is disposed in the second through hole;

[0019] The first manifold is provided with a first outlet and a second outlet, and the manifold is provided with a first liquid inlet for connecting the first outlet and the first liquid inlet channel, and a second liquid inlet for connecting the second outlet and the second liquid inlet channel;

[0020] The second manifold is provided with a third outlet and a fourth inlet, and the collecting plate is provided with a first liquid outlet for connecting the third outlet and the first liquid outlet channel, and a second liquid outlet for connecting the fourth inlet and the second liquid outlet channel.

[0021] In a possible implementation, the first liquid cooling plate and the second liquid cooling plate each include a plate body and a current collecting terminal connected to one end of the plate body, and a first circulation channel and a second circulation channel are formed in the plate body;

[0022] The end of the first liquid cooling plate facing away from the collecting end head is inserted into the first accommodating cavity and is sealed with the first accommodating cavity; the end of the second liquid cooling plate facing away from the collecting end head is inserted into the first accommodating cavity and is sealed with the first accommodating cavity.

[0023] In a possible implementation, a partition is provided in the plate body, and the partition divides the inner cavity of the plate body into a first circulation channel and a second circulation channel that are interconnected.

[0024] In one possible implementation, the partition includes a first partition, a second partition, and a third partition; one end of the first partition is connected to the current collecting terminal, and the other end is spaced apart from the current collecting partition, so that the inner cavity of the plate body is divided into a first flow channel and a second flow channel;

[0025] The second partition is disposed in the first circulation channel, and one end of the second partition is connected to the current collecting partition, and a distance is provided between the other end of the second partition and the current collecting terminal; wherein the second partition divides the first circulation channel into a first channel and a second channel, and the first channel and the second channel are arranged along a first direction;

[0026] The third partition is arranged in the second circulation channel, one end of the third partition is connected to the collecting partition, and there is a distance between the other end of the third partition and the collecting end; wherein, the third partition divides the second circulation channel into a third channel and a fourth channel, and the third channel and the fourth channel are arranged along the first direction.

[0027] In a possible implementation, at least one fourth partition is provided in each of the first channel and the second channel; both ends of the fourth partition are spaced apart from the current collecting terminal and the current collecting partition;

[0028] The third channel and the fourth channel are respectively provided with at least one fifth partition plate, and both ends of the fifth partition plate are spaced apart from the current collecting terminal and the current collecting partition plate.

[0029] In a possible implementation, the width of the first liquid inlet channel gradually increases along a direction from the current collecting member to the first liquid cooling plate.

[0030] A second aspect of the embodiments of the present application provides a liquid cooling system, comprising: a plurality of liquid cooling plate assemblies according to the first aspect;

[0031] The plurality of liquid cooling plate assemblies are arranged at intervals along the third direction, and the first headers of adjacent liquid cooling plate assemblies are connected through a first connecting pipe, and the second headers of adjacent liquid cooling plate assemblies are connected through a second connecting pipe.

[0032] In a possible implementation, in adjacent liquid cooling plate assemblies, a heat conducting member is provided on a surface of one of the liquid cooling plate assemblies facing the other liquid cooling plate assembly.

[0033] A third aspect of an embodiment of the present application provides a battery, comprising a plurality of battery cell modules and the liquid cooling system described in the second aspect; each of the battery cell modules is arranged between adjacent liquid cooling plate assemblies.

[0034] In a possible implementation, each of the battery cell modules includes at least two battery cell module groups and a spacer located between adjacent battery cell module groups.

[0035] In a possible implementation, the device further includes a box having an accommodating cavity, wherein the liquid cooling system and the battery cell module are installed in the accommodating cavity;

[0036] A buffer pad is provided between the liquid cooling plate assembly of the liquid cooling system and the inner wall opposite to the box.

[0037] In the liquid cooling plate assembly, liquid cooling system and battery provided in the embodiments of the present application, the first liquid cooling plate and the second liquid cooling plate are respectively arranged on both sides of the collecting member, and relatively independent liquid inlet channels and liquid outlet channels are formed inside the collecting member. Compared with the related art, this is equivalent to setting the liquid inlet and outlet ends of the cooling medium in the middle position of the liquid cooling plate. In this way, the flow path of the cooling medium can be greatly shortened, the flow resistance of the cooling medium can be effectively reduced, the cooling capacity of the liquid cooling plate assembly is improved, and the performance of the battery is thereby improved.

[0038] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the liquid cooling plate assembly, liquid cooling system and battery provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] FIG1 is a perspective view of a liquid cooling plate assembly according to an embodiment of the present application;

[0041] FIG2 is an exploded schematic diagram of a liquid cooling plate assembly provided in an embodiment of the present application;

[0042] FIG3 is a schematic diagram of the interior of a liquid cooling plate assembly provided in an embodiment of the present application;

[0043] FIG4 is an enlarged schematic diagram of area A in FIG3 ;

[0044] FIG5 is a schematic diagram of a flow path of a cooling medium in a liquid cooling plate assembly according to an embodiment of the present application;

[0045] FIG6 is an enlarged schematic diagram of area B in FIG5 ;

[0046] FIG7 is a schematic diagram of a liquid cooling system provided in an embodiment of the present application;

[0047] FIG8 is a schematic diagram 1 of a battery provided in an embodiment of the present application;

[0048] FIG9 is a second schematic diagram of a battery provided in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 100: Liquid cooling plate assembly;

[0051] 110: first liquid cooling plate; 111: plate body; 112: manifold terminal;

[0052] 120: second liquid cooling plate;

[0053] 130: current collecting member; 131: liquid inlet channel; 1311: first liquid inlet channel; 1312: second liquid inlet channel; 132: liquid outlet channel; 1321: first liquid outlet channel; 1322: second liquid outlet channel; 133: current collecting plate; 1331: first through hole; 1332: second through hole; 1333: first liquid inlet; 1334: second liquid inlet; 1335: first liquid outlet; 1336: second liquid outlet; 134: first collecting pipe; 135: second collecting pipe; 136: collecting partition;

[0054] 140: first circulation channel;

[0055] 150: second circulation channel;

[0056] 160: partition; 161: first partition; 162: second partition; 163: third partition; 164: fourth partition; 165: fifth partition;

[0057] 200: first connecting pipe;

[0058] 300: second connecting pipe;

[0059] 400: thermal conductor;

[0060] 500: Liquid inlet main pipe;

[0061] 600: liquid outlet main pipe;

[0062] 700: battery cell module; 710: battery cell module group; 711: battery cell module; 720: spacer;

[0063] 800: cabinet;

[0064] 900: cushion. DETAILED DESCRIPTION

[0065] As mentioned in the background, the cooling medium in the related art suffers from high flow resistance. The inventors have discovered that this problem arises because the liquid cooling plate in the related art has a cooling channel extending along its length, with the inlet and outlet of the cooling channel located at one end of the length of the plate. This results in a very long flow path for the cooling medium in the cooling channel of a single plate, increasing the flow resistance and reducing the cooling effect of the plate.

[0066] In response to the above-mentioned technical problems, the embodiments of the present application provide a liquid cooling plate assembly, a liquid cooling system and a battery. By respectively arranging the first liquid cooling plate and the second liquid cooling plate on both sides of the current collecting member, and forming relatively independent liquid inlet channels and liquid outlet channels inside the current collecting member, compared with the related art, it is equivalent to arranging the liquid inlet and outlet ends of the cooling medium in the middle position of the liquid cooling plate. In this way, the flow path of the cooling medium can be greatly shortened, the flow resistance of the cooling medium can be effectively reduced, the cooling capacity of the liquid cooling plate assembly can be improved, and the performance of the battery can be improved.

[0067] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0068] Example 1

[0069] Referring to Figures 1 to 6 , an embodiment of the present application provides a liquid cooling plate assembly 100 , which is used to dissipate heat from a heat generating device, for example, a battery.

[0070] The liquid cooling plate assembly 100 includes a first liquid cooling plate 110, a second liquid cooling plate 120, and a current collector 130. The first and second liquid cooling plates 110, 120 are disposed on either side of the current collector 130, and the first and second liquid cooling plates 110, 120, and 130 are fixedly connected by welding. The first and second liquid cooling plates 110, 120 extend along a second direction, i.e., the length of the first liquid cooling plate 110 is the second direction, which is the X direction in Figures 1 and 2. The first direction is the width of the first liquid cooling plate 110, i.e., the Y direction in Figure 1. The third direction is the thickness of the first liquid cooling plate 110, i.e., the Z direction in Figure 1.

[0071] In this embodiment, the first liquid cooling plate 110 and the second liquid cooling plate 120 have the same structure and can be symmetrically arranged relative to the current collecting member 130. This arrangement can simplify the preparation of the liquid cooling plate assembly 100.

[0072] 3 , a first circulation channel 140 and a second circulation channel 150 communicating with each other are formed inside the first liquid cooling plate 110 and the second liquid cooling plate 120 .

[0073] A relatively independent liquid inlet channel 131 and liquid outlet channel 132 are formed inside the collecting member 130. The liquid inlet channel 131 is respectively connected to the first circulation channel 140 of the first liquid cooling plate 110 and the first circulation channel 140 of the second liquid cooling plate 120; the liquid outlet channel 132 is respectively connected to the second circulation channel 150 of the first liquid cooling plate 110 and the second circulation channel 150 of the second liquid cooling plate 120.

[0074] Referring to Figures 5 and 6 , the cooling medium enters the liquid inlet channel 131 and forms two flow paths through the liquid inlet channel 131. First, the cooling medium flows through the liquid inlet channel 131 to the first flow channel 140 of the first liquid cold plate 110, then flows back through the second flow channel 150 to the liquid outlet channel 132, completing the cooling medium circulation within the first liquid cold plate 110. Second, the cooling medium flows through the liquid inlet channel 131 to the first flow channel 140 of the second liquid cold plate 120, then flows back through the second flow channel 150 of the second liquid cold plate 120 to the liquid outlet channel 132, completing the cooling medium circulation within the second liquid cold plate 120. This arrangement divides the cooling medium flow path within the liquid cold plate into two flow paths. Compared to the prior art, each flow path significantly shortens the cooling medium's flow path, effectively reducing the cooling medium's flow resistance, improving the cooling capacity of the liquid cold plate assembly 100, and thereby enhancing battery performance.

[0075] Furthermore, the current collector 130 is used to connect to the cooling medium carrier box, which is connected to the outside world via liquid cooling tubes, to achieve the circulation of the cooling medium. In this embodiment, the current collector 130 is arranged between the first liquid cooling plate 110 and the second liquid cooling plate 120. This eliminates the liquid cooling tubes on both sides of the liquid cooling plate assembly 100 in the longitudinal direction. This effectively prevents damage to the liquid cooling system's liquid cooling tubes in the event of a side impact with the battery pack, preventing the liquid cooling system from malfunctioning due to liquid cooling tube damage.

[0076] It should be noted that the flow path of the cooling medium in the first circulation channel 140 and the second circulation channel 150 can be similar to a U-shape or a zigzag serpentine. In one example, when the flow path of the cooling medium in the first circulation channel 140 and the second circulation channel 150 is similar to a U-shape, the first circulation channel 140 and the second circulation channel 150 are connected at the end away from the current collecting member 130. In another example, when the flow path of the cooling medium in the first circulation channel 140 and the second circulation channel 150 is similar to a zigzag serpentine, the first circulation channel 140 and the second circulation channel 150 are connected at the end close to the current collecting member 130.

[0077] In this embodiment, the liquid inlet channel 131 can be a cylindrical structure extending along the length direction of the first liquid cooling plate 110, one end of the liquid inlet channel 131 is connected to the first circulation channel 140 of the first liquid cooling plate 110, and the other end is connected to the first circulation channel 140 of the second liquid cooling plate 120; accordingly, the layout of the liquid outlet channel 132 is the same as the layout of the liquid inlet channel 131, and this embodiment will not be described in detail here. The liquid inlet channel 131 can also include two relatively independent sub-liquid inlet channels, and the liquid outlet channel 132 also includes two relatively independent sub-liquid outlet channels. For example, please continue to refer to Figure 4, the liquid inlet channel 131 includes a relatively independent first liquid inlet channel 1311 and a second liquid inlet channel 1312, the first liquid inlet channel 1311 is connected to the first circulation channel 140 of the first liquid cooling plate 110, and the second liquid inlet channel 1312 is connected to the first circulation channel 140 of the second liquid cooling plate 120.

[0078] The liquid outlet channel 132 includes a relatively independent first liquid outlet channel 1321 and a second liquid outlet channel 1322 . The first liquid outlet channel 1321 communicates with the second circulation channel 150 of the first liquid cooling plate 110 , and the second liquid outlet channel 1322 communicates with the second circulation channel 150 of the second liquid cooling plate 120 .

[0079] When the cooling medium enters the first liquid cooling plate 110 and the second liquid cooling plate 120 respectively through the liquid inlet channel 131, the cooling medium can be diverted through the first liquid inlet channel 1311 and the second liquid inlet channel 1312. On the one hand, this facilitates the cooling medium to quickly enter the first liquid cooling plate 110 and the second liquid cooling plate 120, improves the circulation smoothness of the cooling medium, and thus improves the cooling effect of the first liquid cooling plate 110 and the second liquid cooling plate 120. On the other hand, it also helps to reduce the impact on the current collecting member 130, thereby improving the safety and service life of the liquid cooling plate assembly 100.

[0080] Continuing with reference to Figures 2, 5, and 6, as a possible embodiment of the current collecting member 130, the current collecting member 130 includes a current collecting plate 133. The current collecting plate 133 has a first accommodating cavity with openings at both ends along a first direction, i.e., along the length of the first liquid cooling plate 110. One end of the first liquid cooling plate 110 is inserted into one opening of the current collecting plate 133, so that a portion of the first liquid cooling plate 110 is located in the first accommodating cavity. The first liquid cooling plate 110 and the current collecting plate 133 are fixedly connected by welding to achieve a sealed connection between the first liquid cooling plate 110 and the current collecting plate 133. One end of the second liquid cooling plate 120 is inserted into the other opening of the current collecting plate 133, so that a portion of the second liquid cooling plate 120 is located in the first accommodating cavity. The second liquid cooling plate 120 and the current collecting plate 133 are fixedly connected by welding to achieve a sealed connection between the second liquid cooling plate 120 and the current collecting plate 133.

[0081] A collecting partition 136 is provided in the first accommodating chamber, which divides the first accommodating chamber into a liquid inlet channel 131 and a liquid outlet channel 132 arranged at intervals along the first direction; that is, the liquid inlet channel 131 and the liquid outlet channel 132 are arranged at intervals along the width direction of the collecting plate 133.

[0082] The current collecting member 130 further includes a first collecting pipe 134 and a second collecting pipe 135. The first collecting pipe 134 is disposed on the region of the collecting plate 133 opposite the liquid inlet channel 131, thereby dividing the liquid inlet channel 131 into a first liquid inlet channel 1311 and a second liquid inlet channel 1312. The first liquid inlet channel 1311 and the second liquid inlet channel 1312 are located on either side of the first collecting pipe 134. The first liquid inlet channel 1311 and the second liquid inlet channel 1312 may have the same or different widths. For example, the first liquid inlet channel 1311 gradually widens along the direction from the current collecting member 130 toward the first liquid cooling plate 110, i.e., along the length of the first liquid cooling plate 110. This reduces the impact on the collecting plate 133 and improves the safety of the liquid cooling plate assembly 100. It should be noted that the second liquid inlet channel 1312 is symmetrically arranged with respect to the center line of the current collecting member 130 , that is, the structure of the second liquid inlet channel 1312 is the same as that of the first liquid inlet channel 1311 , which will not be further described in this embodiment.

[0083] The second manifold 135 is disposed on the region of the manifold plate 133 opposite to the liquid outlet channel 132 to separate the liquid outlet channel 132 into a first liquid outlet channel 1321 and a second liquid outlet channel 1322 . The first liquid outlet channel 1321 and the second liquid outlet channel 1322 are respectively located on both sides of the second manifold 135 .

[0084] It should be noted that the first manifold 134 can be directly inserted into the manifold plate 133, with its outer wall exposed within the liquid inlet channel 131 and sealed to the manifold plate 133. In this case, an outlet can be provided on the wall of the first manifold 134 opposite the first liquid inlet channel 1311 and the second liquid inlet channel 1312, so that the coolant in the first manifold 134 communicates with the first liquid inlet channel 1311 and the second liquid inlet channel 1312, respectively. The second manifold 135 can be arranged in the same manner as the first manifold 134, and this embodiment will not be further described here.

[0085] The first manifold 134 and the current collecting plate 133 can also be connected in other ways. For example, referring to Figures 3 and 4 , the current collecting plate 133 includes first and second through-holes 1331, 1332, spaced apart from each other along a first direction. That is, in the orientation shown in Figure 3 , the first through-hole 1331 is located above the second through-hole 1332. The first and second through-holes 1331, 1332 extend through the thickness of the current collecting plate 133. The first manifold 134 is disposed within the first through-hole 1331, and the second manifold 135 is disposed within the second through-hole 1332.

[0086] Among them, the first collecting pipe 134 is provided with a first outlet (not shown in the figure) and a second outlet (not shown in the figure), and the collecting plate 133 is provided with a first liquid inlet 1333 for connecting the first outlet and the first liquid inlet channel 1311, and a second liquid inlet 1334 for connecting the second outlet and the second liquid inlet channel 1312; that is, the first liquid inlet 1333 and the second liquid inlet 1334 are provided on the wall surface of the collecting plate 133 opposite to the first through hole 1331.

[0087] Correspondingly, the second collecting pipe 135 is provided with a third outlet (not shown in the figure) and a fourth inlet (not shown in the figure), and the collecting plate 133 is provided with a first liquid outlet 1335 for connecting the third outlet and the first liquid outlet channel 1321, and a second liquid outlet 1336 for connecting the fourth inlet and the second liquid outlet channel 1322.

[0088] During use, the cooling medium can enter the first circulation channel 140 of the first liquid cooling plate 110 through the first header 134, the first outlet and the first liquid inlet 1333; and enter the first circulation channel 140 of the second liquid cooling plate 120 through the first header 134, the second outlet and the second liquid inlet 1334.

[0089] Afterwards, the cooling medium flows back into the second manifold 135 through the corresponding second circulation channel 150 , the first liquid outlet 1335 or the second liquid outlet 1336 , thereby completing the entire cooling cycle of the cooling medium.

[0090] It should be noted that, in this embodiment, both ends of the first manifold 134 and the second manifold 135 may be located on both sides of the manifold plate 133 , so as to facilitate connection of the first manifold 134 and the second manifold 135 with other components.

[0091] Please continue to refer to Figures 3 and 5. The first liquid cooling plate 110 and the second liquid cooling plate 120 both include a plate body 111 and a collecting terminal 112 connected to one end of the plate body 111. The end of the plate body 111 of the first liquid cooling plate 110 facing away from the collecting terminal 112 is inserted into the first accommodating cavity and is sealed with the first accommodating cavity; the end of the plate body 111 of the second liquid cooling plate 120 facing away from the collecting terminal 112 is inserted into the first accommodating cavity and is sealed with the first accommodating cavity.

[0092] The collecting end 112 in this embodiment may be a simple plate structure or may have a cavity. The end of the first liquid cooling plate 110 facing away from the collecting member 130 is inserted into the cavity of the collecting end 112 .

[0093] A first circulation channel and a second circulation channel are formed in the plate body 111 ; that is, the inner cavity of the plate body 111 is a hollow structure, and the inner cavity of the plate body 111 can be divided into the first circulation channel 140 and the second circulation channel 150 by the partition 160 .

[0094] It should be noted that the number of partitions 160 may be one or more. When there is only one partition 160, one end of the partition 160 is connected to the current collecting partition 136, and the other end is spaced apart from the corresponding current collecting terminal 112, so that the first flow channel 140 and the second flow channel 150 are connected in the area near the current collecting terminal 112.

[0095] When there are multiple separators 160 , the multiple separators 160 may be divided. For example, the separator 160 includes a first separator 161 , a second separator 162 , and a third separator 163 .

[0096] One end of the first partition 161 is connected to the collecting end 112, and there is a distance between the other end of the first partition 161 and the collecting partition 136, so that the inner cavity of the plate body 111 is divided by the first partition 161 into a first circulation channel 140 and a second circulation channel 150 that are interconnected, and the first circulation channel 140 and the second circulation channel 150 are connected on the side close to the collecting partition 136.

[0097] A second partition 162 is disposed within the first circulation channel 140, with one end of the second partition 162 connected to the current collecting partition 136, and a gap between the other end of the second partition 162 and the current collecting terminal 112. The second partition 162 divides the first circulation channel 140 into a first channel and a second channel, with the first channel and the second channel arranged along a first direction. In this manner, the cooling medium enters the first channel from the liquid inlet channel 131 and flows along the first channel toward the current collecting terminal 112. The cooling medium then enters the second channel through the gap between the second partition 162 and the current collecting terminal 112, and then enters the second circulation channel 150 through the gap between the first partition 161 and the current collecting partition 136. It should be noted that the number of second partitions 162 can be one or more. When there are two second partitions 162, the second partitions 162 can be arranged at intervals along the first direction.

[0098] Meanwhile, a third partition 163 is disposed within the second circulation channel 150. One end of the third partition 163 is connected to the current collecting partition 136, and the other end of the third partition 163 is spaced apart from the current collecting terminal 112. The third partition 163 divides the second circulation channel 150 into a third channel and a fourth channel, which are arranged along the first direction. This arrangement allows the cooling medium that enters the second circulation channel 150 through the first circulation channel 140 to flow back into the liquid outlet channel 132 along the third and fourth channels.

[0099] In the embodiment of the present application, the first circulation channel 140 is divided by the provision of the second partition 162; the second circulation channel 150 is divided by the third partition 163, thereby increasing the circulation time of the cooling medium in the first circulation channel 140 and improving the cooling effect of the first liquid cooling plate 110 and the second liquid cooling plate 120.

[0100] In some embodiments, at least one fourth partition 164 is respectively provided in the first channel and the second channel; the two ends of the fourth partition 164 are spaced apart from the collecting terminal 112 and the collecting partition 136 respectively; the third channel and the fourth channel are respectively provided with at least one fifth partition 165, and the two ends of the fifth partition 165 are spaced apart from the collecting terminal 112 and the collecting partition 136 respectively, so that the cooling medium forms a serpentine direction similar to a bend in both the first channel and the second channel, and the third channel and the fourth channel form a serpentine direction similar to a bend; in other words, the first circulation channel 140 includes a plurality of sub-circulation channels connected in series, and accordingly, the second circulation channel 150 also includes a plurality of sub-channels connected in series; in this way, the circulation time of the cooling medium in the first liquid cooling plate 110 and the second liquid cooling plate 120 can be increased as much as possible, thereby improving the cooling effect of the first liquid cooling plate 110 and the second liquid cooling plate 120.

[0101] Example 2

[0102] Referring to FIG. 7 , another embodiment of the present application provides a liquid cooling system comprising a plurality of liquid cooling plate assemblies 100 as described in Example 1. The plurality of liquid cooling plate assemblies 100 are spaced apart along a third direction, and the areas between adjacent liquid cooling plate assemblies 100 are used to house battery cell modules, which are cooled and dissipated by the liquid cooling plate assemblies 100 .

[0103] The first headers 134 of adjacent liquid cooling plate assemblies 100 are connected through a first connecting pipe 200, and the second headers 135 of adjacent liquid cooling plate assemblies 100 are connected through a second connecting pipe 300, and the first header 134 and the second header 135 located at the end are connected together to realize the series connection of multiple liquid cooling plate assemblies 100.

[0104] Since the liquid cooling system includes the liquid cooling plate assembly 100 in the first embodiment, and thus has the beneficial effects of the liquid cooling plate assembly 100 , this embodiment will not be further described herein.

[0105] In one possible embodiment, in adjacent liquid cooling plate assemblies 100, a heat conductor 400 is provided on the surface of one liquid cooling plate assembly 100 facing the other liquid cooling plate assembly 100. That is, in the third direction, i.e., the thickness direction of the liquid cooling plate assembly 100, a heat conductor 400 is provided on the opposing surfaces of each liquid cooling plate assembly 100. The thermal conductivity of the heat conductor 400 is greater than or equal to 0.2 W / MK. The heat conductor 400 can quickly transfer the heat generated by the battery cell module to the liquid cooling plate assembly 100, thereby improving the heat dissipation effect of the liquid cooling system.

[0106] It should be noted that the liquid cooling system also includes a liquid inlet main pipe 500 and a liquid outlet main pipe 600; the liquid inlet main pipe 500 is connected to the first header 134 of the liquid cooling plate assembly 100 located at the very end; the liquid outlet main pipe 600 is connected to the second header 135 of the liquid cooling plate assembly 100 located at the very end.

[0107] Example 3

[0108] Please refer to Figures 8 and 9. An embodiment of the present application provides a battery for providing power to an electrical device. The electrical device may include a vehicle. For example, the vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. In addition, the electrical device may also be other energy storage devices, such as mobile phones, portable devices, laptops, electric toys, electric tools, ships, and spacecraft, among which the spacecraft may include an airplane, a rocket, a space shuttle, or a spacecraft.

[0109] The battery includes multiple cell modules 700 and the liquid cooling system described in Example 2, wherein each cell module 700 is disposed between adjacent liquid cooling plate assemblies 100. In other words, the number of cell modules 700 and the number of liquid cooling plate assemblies 100 differ by 1, so that there is a cell module 700 disposed between adjacent liquid cooling plate assemblies 100.

[0110] Each cell module 700 includes at least two cell module groups 710 . The at least two cell module groups 710 are arranged along the third direction, and spacers 720 are provided between adjacent cell module groups 710 .

[0111] Each cell module group 710 includes at least two cell modules 711 arranged along the second direction. The large surface of each cell module 711 aligns with the liquid cooling plate assembly 100. That is, the length of each cell module 711 is parallel to the length of the liquid cooling plate assembly 100. This arrangement allows the liquid cooling plate assembly 100 to rapidly cool the cell modules 711.

[0112] In addition, in the third direction, spacers 720 are provided between adjacent cell module groups 710, that is, spacers 720 are provided between adjacent cell modules 711. The spacers can absorb the expansion of the cell modules 711, and the heat conductive member 400 can also absorb the expansion of the cell modules 711, thereby ensuring the heat exchange efficiency between the cell modules 711 and the liquid cooling plate assembly 100, and extending the service life of the cell modules 711.

[0113] In one possible embodiment, the battery further includes a housing 800 having a receiving cavity 810, with the liquid cooling system and cell module 700 mounted within the receiving cavity 810. A buffer pad 900 is disposed between the liquid cooling system's cooling plate assembly 100 and the opposing inner walls of the housing 800. The buffer pad 900 can be made of an elastic rubber material. The buffer pad 900 can absorb length tolerances of the cell module, assisting in its placement within the battery pack housing, while also providing thermal insulation.

[0114] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0115] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A liquid cooling plate assembly, characterized in that: It comprises a current collecting member and a first liquid cooling plate and a second liquid cooling plate located on both sides of the current collecting member; the first liquid cooling plate and the second liquid cooling plate are both formed with a first circulation channel and a second circulation channel connected to each other; A relatively independent liquid inlet channel and liquid outlet channel are formed inside the current collecting member, and the liquid inlet channel is communicated with the first circulation channel of the first liquid cooling plate and the first circulation channel of the second liquid cooling plate respectively; The liquid outlet channel is communicated with the second circulation channel of the first liquid cooling plate and the second circulation channel of the second liquid cooling plate respectively.

2. The liquid cooling plate assembly according to claim 1, characterized in that: The liquid inlet channel comprises a relatively independent first liquid inlet channel and a second liquid inlet channel, the first liquid inlet channel is communicated with the first circulation channel of the first liquid cooling plate, and the second liquid inlet channel is communicated with the first circulation channel of the second liquid cooling plate; The liquid outlet channel includes a relatively independent first liquid outlet channel and a second liquid outlet channel, the first liquid outlet channel is communicated with the second circulation channel of the first liquid cooling plate, and the second liquid outlet channel is communicated with the second circulation channel of the second liquid cooling plate.

3. The liquid cooling plate assembly according to claim 2, characterized in that: The current collecting member comprises a current collecting plate, a first current collecting tube and a second current collecting tube; The current collecting plate comprises a first accommodating cavity with openings at both ends, a current collecting partition is arranged in the first accommodating cavity, and the current collecting partition divides the first accommodating cavity into a liquid inlet channel and a liquid outlet channel arranged at intervals along a first direction; The first current collector is arranged on a region of the current collector plate opposite to the liquid inlet channel, so as to separate the liquid inlet channel into a first liquid inlet channel and a second liquid inlet channel, wherein the first liquid inlet channel and the second liquid inlet channel are respectively located on two sides of the first current collector; The second current collector is disposed on a region of the current collector plate opposite to the liquid outlet channel to separate the liquid outlet channel into a first liquid outlet channel and a second liquid outlet channel, wherein the first liquid outlet channel and the second liquid outlet channel are respectively located on two sides of the second current collector.

4. The liquid cooling plate assembly according to claim 3, characterized in that: The current collecting plate comprises a first through hole and a second through hole arranged at intervals, the first current collecting tube is arranged in the first through hole, and the second current collecting tube is arranged in the second through hole; The first manifold is provided with a first outlet and a second outlet, and the manifold is provided with a first liquid inlet for connecting the first outlet and the first liquid inlet channel, and a second liquid inlet for connecting the second outlet and the second liquid inlet channel; The second manifold is provided with a third outlet and a fourth inlet, and the collecting plate is provided with a first liquid outlet for connecting the third outlet and the first liquid outlet channel, and a second liquid outlet for connecting the fourth inlet and the second liquid outlet channel.

5. The liquid cooling plate assembly according to claim 3 or 4, characterized in that: The first liquid cooling plate and the second liquid cooling plate each include a plate body and a current collecting terminal connected to one end of the plate body, and a first circulation channel and a second circulation channel are formed in the plate body; The end of the first liquid cooling plate away from the collecting terminal is inserted into the first accommodating cavity and is sealed with the first accommodating cavity; the end of the second liquid cooling plate away from the collecting terminal is inserted into the first accommodating cavity and is sealed with the first accommodating cavity.

6. The liquid cooling plate assembly according to claim 5, characterized in that: A partition is disposed in the plate body, and the partition divides the inner cavity of the plate body into a first flow channel and a second flow channel that are interconnected.

7. The liquid cooling plate assembly according to claim 6, characterized in that: The partition includes a first partition, a second partition and a third partition; one end of the first partition is connected to the current collecting terminal, and the other end is spaced apart from the current collecting partition, so that the inner cavity of the plate body is divided into a first flow channel and a second flow channel; The second partition is disposed in the first circulation channel, and one end of the second partition is connected to the current collecting partition, and a distance is provided between the other end of the second partition and the current collecting terminal; wherein the second partition divides the first circulation channel into a first channel and a second channel, and the first channel and the second channel are arranged along a first direction; The third partition is arranged in the second circulation channel, one end of the third partition is connected to the collecting partition, and there is a distance between the other end of the third partition and the collecting end; wherein the third partition divides the second circulation channel into a third channel and a fourth channel, and the third channel and the fourth channel are arranged along the first direction.

8. The liquid cooling plate assembly according to claim 7, characterized in that: At least one fourth partition is disposed in each of the first channel and the second channel; both ends of the fourth partition are spaced apart from the current collecting terminal and the current collecting partition; The third channel and the fourth channel are respectively provided with at least one fifth partition plate. There is a distance between the two ends of the five partitions and the current collecting end and the current collecting partition.

9. The liquid cooling plate assembly according to any one of claims 2 to 4, characterized in that: Along the direction from the current collecting member to the first liquid cooling plate, the width of the first liquid inlet channel gradually increases.

10. A liquid cooling system, characterized in that: comprising a plurality of liquid cooling plate assemblies according to any one of claims 1 to 9; The plurality of liquid cooling plate assemblies are arranged at intervals along the third direction, and the first headers of adjacent liquid cooling plate assemblies are connected through a first connecting pipe, and the second headers of adjacent liquid cooling plate assemblies are connected through a second connecting pipe.

11. The liquid cooling system according to claim 10, characterized in that: In the adjacent liquid cooling plate assemblies, a heat conducting member is arranged on a surface of one of the liquid cooling plate assemblies facing the other liquid cooling plate assembly.

12. A battery, characterized in that: It comprises a plurality of battery cell modules and the liquid cooling system according to claim 10 or claim 11; each of the battery cell modules is arranged between adjacent liquid cooling plate assemblies.

13. The battery according to claim 12, characterized in that Each of the battery cell modules includes at least two battery cell module groups and a spacer located between adjacent battery cell module groups.

14. The battery according to claim 12 or 13, characterized in that: It also includes a box body having a containing cavity, wherein the liquid cooling system and the battery cell module are installed in the containing cavity; A buffer pad is arranged between the liquid cooling plate assembly of the liquid cooling system and the inner wall opposite to the box body.

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