Liquid cooling assembly and battery pack

Abstract

The invention provides a liquid cooling assembly and a battery pack. The liquid cooling assembly comprises liquid cooling plates and supporting pieces, liquid cooling flow channels are formed in the liquid cooling plates, butt joint inlets and butt joint outlets which are communicated with the liquid cooling flow channels are formed in the end faces of the liquid cooling plates in the thickness direction, the liquid cooling plates comprise the first liquid cooling plate and the second liquid cooling plate, and the first liquid cooling plate is further provided with a total inlet and a total outlet. And the main inlet and the main outlet are communicated with the liquid cooling flow channel of the first liquid cooling plate. The supporting pieces are connected between the first liquid cooling plate and the second liquid cooling plate, at least two supporting pieces are arranged, at least two supporting pieces in all the supporting pieces are provided with butt joint flow channels, one butt joint flow channel is communicated between the butt joint outlet of the first liquid cooling plate and the butt joint inlet of the second liquid cooling plate, and the other butt joint flow channel is communicated between the butt joint outlet of the second liquid cooling plate and the butt joint inlet of the second liquid cooling plate. And the other butt-joint flow channel is communicated between the butt-joint outlet of the second liquid cooling plate and the butt-joint inlet of the first liquid cooling plate. The liquid cooling assembly provided by the embodiment of the invention has the advantages of simple production line and production process, low production cost and convenience in assembly and maintenance.

Description

Technical Field

[0001] The present invention relates to the field of batteries, and particularly to a liquid cooling component and a battery pack. Background Art

[0002] In a double-layer module battery pack, the structures of the upper liquid cooling plate and the lower liquid cooling plate are quite different. On the one hand, the upper liquid cooling plate needs to be connected to a supporting structure that cooperates with it so that the upper liquid cooling plate is located in the middle position of the battery pack and has the supporting strength to support the module. On the other hand, the upper liquid cooling plate and the lower liquid cooling plate need to be provided with liquid inlet and outlet interfaces respectively. However, the large structural differences between the upper liquid cooling plate and the lower liquid cooling plate result in the need to set up separate production lines for processing the upper liquid cooling plate and the lower liquid cooling plate, making the production line and production process of the battery pack complex, with high production costs. At the same time, it also makes the battery pack structure complex, which is not conducive to the assembly and maintenance of the battery pack. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present invention provides a liquid cooling component and a battery pack applying the liquid cooling component.

[0005] The liquid cooling component of the embodiment of the present invention includes:

[0006] A liquid cooling plate, in which a liquid cooling flow channel is provided inside the liquid cooling plate, and a docking inlet and a docking outlet are provided on the end face in the thickness direction of the liquid cooling plate. Both the docking inlet and the docking outlet are communicated with the liquid cooling flow channel. The liquid cooling plate includes a first liquid cooling plate and a second liquid cooling plate. The first liquid cooling plate is further provided with a total inlet and a total outlet, and the total inlet and the total outlet are communicated with the liquid cooling flow channel of the first liquid cooling plate;

[0007] A support member, which is connected between the first liquid cooling plate and the second liquid cooling plate. There are at least two support members, and at least two of all the support members are provided with docking flow channels. One of the docking flow channels is communicated between the docking outlet of the first liquid cooling plate and the docking inlet of the second liquid cooling plate, and the other docking flow channel is communicated between the docking outlet of the second liquid cooling plate and the docking inlet of the first liquid cooling plate.

[0008] The liquid cooling component of the embodiment of the present invention is supported and connected between the first liquid cooling plate and the second liquid cooling plate through a support member to ensure the support strength of the first liquid cooling plate or the second liquid cooling plate located at the top of the support member. At the same time, at least two support members are provided with docking channels, and the liquid cooling channels of the first liquid cooling plate and the second liquid cooling plate are communicated through the docking channels, so that the liquid cooling medium can enter the second liquid cooling plate from the first liquid cooling plate and then return from the second liquid cooling plate to the first liquid cooling plate, thereby making the structures of the first liquid cooling plate and the second liquid cooling plate substantially the same. Therefore, the liquid cooling component of the embodiment of the present invention has a simple production line and production process, as well as a low production cost, and is convenient for assembly and maintenance.

[0009] In some embodiments, the support member includes support columns, the support columns are arranged in at least two rows, and each row includes at least two of the support columns arranged at intervals, and two of the support columns are provided with the docking channels penetrating along the length direction.

[0010] In some embodiments, the liquid cooling component further includes a sealing ring, the sealing ring is arranged at the end of the support column provided with the docking channel, and surrounds the opening formed by the docking channel on the support column.

[0011] In some embodiments, clamping grooves are provided on the bottom surfaces at both ends in the length direction and / or both ends in the width direction of the liquid cooling plate, a clamping platform is provided on the top surface of the support column, the clamping platform is fitted in the clamping groove of one of the first liquid cooling plate and the second liquid cooling plate, and the top surface of the support column abuts against the bottom surface of one of the first liquid cooling plate and the second liquid cooling plate.

[0012] In some embodiments, the liquid cooling component further includes a threaded connector, a threaded hole is provided in the clamping platform, or threaded holes are provided in the clamping platform and the top surface of the support column, the threaded connector penetrates through one of the first liquid cooling plate and the second liquid cooling plate and is in threaded connection with the threaded hole, and the bottom surface of the support column is adhesively or welded to the other of the first liquid cooling plate and the second liquid cooling plate.

[0013] In some embodiments, first inclined plates and second inclined plates are alternately arranged inside the liquid cooling plate along one of the length direction and the width direction of the liquid cooling plate, the inclination directions of the first inclined plates and the second inclined plates are opposite along one of the length direction and the width direction of the liquid cooling plate, a strip-shaped channel is provided between adjacent first inclined plates and second inclined plates, and the liquid cooling channel includes at least a part of the strip-shaped channel.

[0014] In some embodiments, the liquid-cooling flow channel includes a conversion channel and multiple groups of the strip channels arranged in sequence, each group of the strip channels includes multiple strip channels arranged in sequence and with the same internal medium flow direction, each group of the strip channels has a head end and a tail end relatively arranged along the extension direction of the strip channels, along the arrangement direction of the multiple groups of the strip channels, one end of the extension direction of the first group of the strip channels is connected to the main inlet through the corresponding conversion channel and serves as the head end of the first group of the strip channels, the tail end of the previous group of the strip channels is connected to the same end of the next group of the strip channels through the corresponding strip channel, and the end of the next group of the strip channels connected to the tail end of the previous group of the strip channels serves as the head end, and the tail end or the head end of the last group of the strip channels is connected to the main outlet through the corresponding conversion channel.

[0015] In some embodiments, the strip-shaped channel includes a first strip-shaped channel and a second strip-shaped channel, the first strip-shaped channel is used to form the liquid-cooling channel, and the second strip-shaped channel accommodates air to form an insulating space.

[0016] In some embodiments, the top wall of the liquid cooling plate forms at least a portion of the wall of the first strip-shaped channel. In the first strip-shaped channel whose wall is formed by the top wall of the liquid cooling plate, the size of the first strip-shaped channel decreases from top to bottom along the alternating arrangement direction.

[0017] In some embodiments, the inner cavity of the liquid cooling plate includes a top space and a bottom space, and the top space and the bottom space are both provided with the first inclined plates and the second inclined plates arranged alternately, a part of the strip channels in the top space are first strip channels, and another part of the strip channels are second strip channels, in the bottom space of the first liquid cooling plate, the strip channels are all the second strip channels, and in the bottom space of the second liquid cooling plate, the strip channels are all the second strip channels, or, the strip channels connected to the docking outlet of the second liquid cooling plate are the first strip channels, and the remaining strip channels are all the second strip channels.

[0018] In some embodiments, the liquid cooling plate further comprises a first outer plate, a second outer plate, a first inner plate, and a second inner plate;

[0019] The first outer plate and the first inner plate are provided at both ends of the top space of the first liquid cooling plate in the extension direction of the strip-shaped channel, and the first outer plate and the first inner plate are arranged at intervals to form the conversion channel. In the top space of the first liquid cooling plate, the second strip-shaped channel opposite to the conversion channel is closed by the first inner plate to separate the conversion channel and the second strip-shaped channel, and one of the first outer plates is provided with the main inlet and the main outlet;

[0020] The second outer plate and the second inner plate are provided at both ends of the top space of the second liquid cooling plate in the extension direction of the strip-shaped channel, and the second outer plate and the second inner plate are spaced apart to form the conversion channel. In the top space of the second liquid cooling plate, the second strip channels opposite to the conversion channel are closed by the second inner plate to separate the conversion channel and the second strip channels. The bottom surface of the second liquid cooling plate is provided with the docking inlet and the docking outlet. In the bottom space of the second liquid cooling plate, one end of the second strip channel connected to one of the docking inlet and the docking outlet is provided with the spaced The second outer plate and the second inner plate, the second inner plate separates the second strip channel, and one of the docking inlet and the docking outlet is located between the second outer plate and the second inner plate, and a first connecting port is provided between the second strip channel and the conversion channel, the first connecting port is located between the second outer plate and the second inner plate, and both ends of the first strip channel connected to the other of the docking inlet and the docking outlet are provided with a second outer plate, and one end of the first strip channel is connected to the other of the docking inlet and the docking outlet, and the other end is provided with a second connecting port connected to the conversion channel.

[0021] The battery pack of the embodiment of the present invention comprises:

[0022] The box body and the liquid cooling assembly described in any one of the above embodiments, the first liquid cooling plate forms the bottom plate of the box body, the second liquid cooling plate is located in the box body, and the first liquid cooling plate and the second liquid cooling plate both carry modules.

[0023] The battery pack of the embodiment of the present invention adopts the liquid cooling assembly of the embodiment of the present invention, and forms the first liquid cooling plate as the bottom plate of the box body, so that the first liquid cooling plate and the second liquid cooling plate both carry modules, so that the battery pack has a simple and reliable structure, a simple production line and production process, and a lower production cost, and is easy to assemble and maintain.

[0024] In some embodiments, the bottom surfaces at both ends of the length direction and / or the bottom surfaces at both ends of the width direction of the liquid cooling plate are provided with card grooves, and the bottom surfaces at both ends of the length direction and / or the bottom surfaces at both ends of the width direction of the box body are provided with bosses, and the bosses are fitted in the corresponding card grooves of the first liquid cooling plate.

[0025] In some embodiments, the battery pack also includes a module fixing beam, the two ends of the liquid cooling plate in the width direction are connected to the support member, the two ends of the liquid cooling plate in the length direction are provided with the module fixing beam, and the module fixing beam is detachably connected to the module on the same liquid cooling plate through a connecting member.

[0026] In some embodiments, the box body includes a detachable upper box and a lower box. The first liquid cooling plate forms the bottom plate of the lower box, and the second liquid cooling plate is located at the top of the lower box.

[0027] The battery pack further includes a support plate and a support rod. The support plate is arranged between one end of the second liquid cooling plate and the side wall of the lower box. The support plate is arranged on the support rod, and the support rod is arranged on the module fixing beam. The support plate is used to support electrical components and / or the BMS. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a front view schematic diagram of the liquid cooling assembly according to an embodiment of the present invention;

[0029] Figure 2 is a front view schematic diagram of the remaining part after removing the first outer plate and the second outer plate of the liquid cooling assembly according to an embodiment of the present invention Figure 1 ;

[0030] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0031] Figure 4 is a front view schematic diagram of the remaining part after removing the first outer plate and the second outer plate of the liquid cooling assembly according to an embodiment of the present invention Figure 2 ;

[0032] Figure 5 is Figure 4 an enlarged schematic diagram of part B in

[0033] Figure 6 is a rear view schematic diagram of the liquid cooling assembly according to an embodiment of the present invention;

[0034] Figure 7 is a rear view schematic diagram of the remaining part after removing the first outer plate and the second outer plate of the liquid cooling assembly according to an embodiment of the present invention;

[0035] Figure 8 is Figure 7 an enlarged schematic diagram of part C in

[0036] Figure 9 is Figure 1 a cross-sectional upward view of the first liquid cooling plate in

[0037] Figure 10 is Figure 1 a cross-sectional downward view of the second liquid cooling plate in

[0038] Figure 11 is a schematic diagram of the support member with a butt joint flow channel in the liquid cooling assembly according to an embodiment of the present invention;

[0039] Figure 12It is a front view schematic diagram of the battery pack according to an embodiment of the present invention;

[0040] Figure 13 It is a rear view schematic diagram of the remaining part after removing the upper case of the battery pack according to an embodiment of the present invention;

[0041] Figure 14 It is an exploded view of a partial structure of the battery pack according to an embodiment of the present invention.

[0042] Reference numerals:

[0043] 1, liquid cooling plate; 11, first liquid cooling plate; 12, second liquid cooling plate; 13, first inclined plate; 14, second inclined plate; 15, strip channel; 151, first strip channel; 152, second strip channel; 16, conversion channel; 17, top space; 18, bottom space; 19, first outer plate; 110, second outer plate; 111, first inner plate; 112, second inner plate; 113, first communication port; 114, second communication port; 2, docking inlet; 3, docking outlet; 4, total inlet; 5, total outlet; 6, card slot; 7, support member; 71, docking flow channel; 72, clamping platform; 73, threaded hole; 8, sealing ring; 9, threaded connecting member; 10, box body; 101, boss; 102, upper case; 103, lower case; 104, low-voltage plug-in; 105, high-voltage plug-in; 20, module fixing beam; 30, connecting member; 40, support plate; 50, support rod; 60, protection cover piece; 70, module; 80, electrical component; 90, BMS. Detailed implementation manners

[0044] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0045] The following refers to Figures 1 - 14 Describe a liquid cooling component and a battery pack according to an embodiment of the present invention.

[0046] As Figures 1 - 14 shown, the liquid cooling component according to an embodiment of the present invention includes a liquid cooling plate 1 and a support member 7.

[0047] A liquid cooling flow channel is provided inside the liquid cooling plate 1, and a docking inlet 2 and a docking outlet 3 are provided on the end face in the thickness direction of the liquid cooling plate 1. Both the docking inlet 2 and the docking outlet 3 are communicated with the liquid cooling flow channel.

[0048] As Figures 1 - 5 shown, on the end face in the thickness direction (such as the up and down direction shown in Figure 1 shown) of the liquid cooling plate 1, a docking inlet 2 and a docking outlet 3 communicating with the liquid cooling flow channel are provided. The docking inlet 2 and the docking outlet 3 are preferably but not limited to being located in the length direction of the liquid cooling plate 1 (such as Figure 1one end in the front - to - back direction as shown, and are arranged at intervals in the width direction of the liquid - cooling plate 1 (such as Figure 1 the left - to - right direction as shown). More preferably, one of the docking inlets 2 and the docking outlets 3 is located at the left front end of the liquid - cooling plate 1, and the other is located at the right rear end of the liquid - cooling plate 1. The docking inlet 2 is used to allow the liquid - cooling medium to enter the liquid - cooling flow channel, and the docking outlet 3 is used to allow the liquid - cooling medium to discharge from the liquid - cooling flow channel.

[0049] The liquid - cooling plate 1 includes a first liquid - cooling plate 11 and a second liquid - cooling plate 12. The first liquid - cooling plate 11 is further provided with a total inlet 4 and a total outlet 5, and the total inlet 4 and the total outlet 5 are communicated with the liquid - cooling flow channel of the first liquid - cooling plate 11.

[0050] As Figures 1 - 7 shown, the first liquid - cooling plate 11 and the second liquid - cooling plate 12 are arranged at intervals in the up - and - down direction. Preferably but not limited to, the first liquid - cooling plate 11 is located below the second liquid - cooling plate 12. The first liquid - cooling plate 11 is further provided with a total inlet 4 and a total outlet 5. The total inlet 4 is the inlet for the liquid - cooling medium to enter the liquid - cooling assembly, and the total outlet 5 is the outlet for the liquid - cooling medium to discharge from the liquid - cooling assembly.

[0051] The support member 7 is connected between the first liquid - cooling plate 11 and the second liquid - cooling plate 12. There are at least two support members 7. At least two of all the support members 7 are provided with docking channels 71. One of the docking channels 71 is communicated between the docking outlet 3 of the first liquid - cooling plate 11 and the docking inlet 2 of the second liquid - cooling plate 12, and the other docking channel 71 is communicated between the docking outlet 3 of the second liquid - cooling plate 12 and the docking inlet 2 of the first liquid - cooling plate 12.

[0052] As Figures 1 - 11 shown, there are multiple support members 7. The multiple support members 7 all extend in the up - and - down direction and support between the first liquid - cooling plate 11 and the second liquid - cooling plate 12, so that the second liquid - cooling plate 12 is located above the first liquid - cooling plate 11. Among them, the two support members 7 located at the front - most end are provided with docking channels 71.

[0053] Among the two support members 7 at the front end, the docking channel 71 of the support member 7 on the right end is communicated between the docking outlet 3 of the first liquid - cooling plate 11 and the docking inlet 2 of the second liquid - cooling plate 12, and the docking channel 71 of the support member 7 on the left end is communicated between the docking outlet 3 of the second liquid - cooling plate 12 and the docking inlet 2 of the first liquid - cooling plate 12. In other words, the docking outlet 3 is provided at the right end of the top surface of the first liquid - cooling plate 11, and is oppositely arranged in the up - and - down direction with the docking inlet 2 of the second liquid - cooling plate 12 and is communicated through the docking channel 71 on the right end. The docking inlet 2 is provided at the left end of the top surface of the first liquid - cooling plate 11, and is oppositely arranged in the up - and - down direction with the docking outlet 3 of the second liquid - cooling plate 12 and is communicated through the docking channel 71 on the left end.

[0054] It should be noted that, except for the two support members 7 at the forefront, the remaining support members 7 can be solid or hollow. Since the remaining support members 7 are not located between the docking inlet 2 and the docking outlet 3, even if the support members 7 are hollow, the hollow space cannot form a docking flow channel 71 for the flow of the liquid cooling medium. Preferably, the remaining support members 7 are hollow, which on the one hand reduces the process complexity and production cost of the support members 7, and on the other hand ensures the strength of the support members 7 to ensure the support strength of the second liquid cooling plate 12.

[0055] When the liquid cooling assembly is operating, the liquid cooling medium supplied from the total inlet 4 is split at the docking outlet 3 of the first liquid cooling plate 11. A part remains in the liquid cooling flow channel of the first liquid cooling plate 11, and the other part enters the liquid cooling flow channel of the second liquid cooling plate 12 through the docking flow channel 71 of the support member 7 at the right end. The medium in the liquid cooling flow channel of the second liquid cooling plate 12 flows back into the first liquid cooling plate 11 through the docking flow channel 71 of the support member 7 at the left end, and converges with the liquid cooling medium remaining in the liquid cooling flow channel of the first liquid cooling plate 11 at the docking inlet 2 of the first liquid cooling plate 11, and then is discharged from the total outlet 5, so that both the first liquid cooling plate 11 and the second liquid cooling plate 12 can exchange heat and cool down.

[0056] It should be noted that the liquid cooling assembly of the embodiment of the present invention is preferably but not limited to being used for a battery pack. In other words, the first liquid cooling plate 11 and the second liquid cooling plate 12 are used to exchange heat and cool down the corresponding modules. The first liquid cooling plate 11 and the second liquid cooling plate 12 can both exchange heat and cool down the modules located between them, or the first liquid cooling plate 11 and the second liquid cooling plate 12 can respectively carry the modules and exchange heat and cool down the carried modules. Preferably, the first liquid cooling plate 11 and the second liquid cooling plate 12 respectively carry the modules and exchange heat and cool down.

[0057] The liquid cooling assembly of the embodiment of the present invention is supported and connected between the first liquid cooling plate and the second liquid cooling plate by support members to ensure the support strength of the first liquid cooling plate or the second liquid cooling plate located at the top of the support members. At the same time, at least two support members are provided with docking flow channels, and the liquid cooling flow channels of the first liquid cooling plate and the second liquid cooling plate are connected through the docking flow channels, so that the liquid cooling medium can enter the second liquid cooling plate from the first liquid cooling plate, and then return from the second liquid cooling plate to the first liquid cooling plate, without separately providing a liquid supply pipeline and an interface connected to the liquid supply pipeline for the second liquid cooling plate, reducing the risk of liquid leakage. At the same time, the structures of the first liquid cooling plate and the second liquid cooling plate are substantially the same, and the first liquid cooling plate and the second liquid cooling plate can be processed by the same production line and / or the same process, and then the total inlet and the total outlet are further provided on the first liquid cooling plate. Therefore, the liquid cooling assembly of the embodiment of the present invention has a simple production line and production process, as well as a low production cost, and is convenient for assembly and maintenance.

[0058] In some embodiments, the support member 7 includes support columns, which are arranged in at least two rows, and each row includes at least two support columns arranged at intervals. Among them, two support columns are provided with docking channels 71 penetrating along the length direction.

[0059] As Figure 1 and Figure 11 shown, the support member 7 is a support column extending in the vertical direction. The support columns are arranged in two rows on the left and right. Each row includes a plurality of support columns extending in the front-rear direction. The left row of support columns supports between the left ends of the first liquid cooling plate 11 and the second liquid cooling plate 12, and the right row of support columns supports between the right ends of the first liquid cooling plate 11 and the second liquid cooling plate 12. The support columns in both the left and right rows extend from the front end to the rear end of the second liquid cooling plate 12 to ensure stable support of the second liquid cooling plate 12 and have a high support strength, so that the second liquid cooling plate 12 can carry the module.

[0060] On the two support columns at the forefront, the support columns are provided with docking channels 71 penetrating along the up-down direction for the flow of the liquid cooling medium, so as to transfer the liquid cooling medium between the first liquid cooling plate 11 and the second liquid cooling plate 12.

[0061] It can be understood that the support member is not limited to a support column. In some other embodiments, the support member is a support plate.

[0062] In some embodiments, the liquid cooling assembly of the embodiment of the present invention further includes a sealing ring 8. The sealing ring 8 is arranged at the end of the support column provided with the docking channel 71 and surrounds the opening formed by the docking channel 71 on the support column.

[0063] As Figure 11 shown, on the two support members 7 at the forefront, sealing rings 8 are provided at both the top and bottom ends of the support member 7. The sealing rings 8 surround the outer periphery of the opening formed by the docking channel 71 at the end of the support member 7. Among them, the sealing ring 8 at the top is used to abut against the bottom surface of the second liquid cooling plate 12, and the sealing ring 8 at the bottom is used to abut against the top surface of the first liquid cooling plate 11 to ensure the sealed connection between the support member 7 and both the second liquid cooling plate 12 and the first liquid cooling plate 11, and avoid leakage of the liquid cooling medium at the connection between the support member 7 and the second liquid cooling plate 12 and at the connection between the support member 7 and the first liquid cooling plate 11.

[0064] It should be noted that the sealing ring 8 can also be a finished sealing ring or can be formed by a sealant.

[0065] In some embodiments, clamping grooves 6 are provided on the bottom surfaces at both ends in the length direction and / or at both ends in the width direction of the liquid cooling plate 1. The top surface of the support column is provided with clamping platforms 72. The clamping platforms 72 are fitted into the clamping grooves 6 of one of the first liquid cooling plate 11 and the second liquid cooling plate 12, and the top surface of the support column abuts against the bottom surface of one of the first liquid cooling plate 11 and the second liquid cooling plate 12.

[0066] As Figure 1 and Figure 11 shown, clamping grooves 6 are provided on the bottom surfaces at both left and right ends of the liquid cooling plate 1. The clamping grooves 6 are preferably but not limited to being strip-shaped extending in the front-rear direction. The clamping grooves 6 preferably but not limited to form openings on the left-right side surfaces of the liquid cooling plate 1, so that the left-right side surfaces of the liquid cooling plate 1 are stepped at the clamping grooves 6.

[0067] The top surface of the support column is provided with a protruding clamping platform 72, so that the top end of the support column is stepped. Among them, the clamping platform 72 of the left row of support columns is located on the left side of the corresponding support column. The clamping platform 72 of the left row of support columns is fitted in the left-end clamping groove 6 of the second liquid cooling plate 12. The clamping platform 72 of the right row of support columns is located on the right side of the corresponding support column. The clamping platform 72 of the right row of support columns is fitted in the right-end clamping groove 6 of the second liquid cooling plate 12. The top surface of each support column abuts against the bottom surface of the second liquid cooling plate 12.

[0068] The cooperation of the clamping platform 72 and the clamping groove 6 makes the connection between the support column and the second liquid cooling plate 12 stable and forms a mutual position-limiting effect, so as to ensure the stable support of the second liquid cooling plate 12 and have a high support strength, and can prevent the support column and the second liquid cooling plate 12 from deforming and toppling.

[0069] It can be understood that in some other embodiments, the clamping grooves can be provided as multiple ones corresponding to the clamping platforms one by one.

[0070] In some embodiments, the liquid cooling assembly of the embodiment of the present invention further includes a threaded connector 9. The clamping platform 72 is provided with a threaded hole 73, or the clamping platform 72 and the top surface of the support column are provided with threaded holes 73. The threaded connector 9 penetrates through one of the first liquid cooling plate 11 and the second liquid cooling plate 12 and is connected in cooperation with the threaded hole 73. The bottom surface of the support column is adhesively or welded to the other of the first liquid cooling plate 11 and the second liquid cooling plate 12.

[0071] As Figure 1 、 Figure 11 and Figure 14 shown, the threaded holes 73 are simultaneously provided on the top surfaces of the clamping platform 72 and the support column. In other words, a part of the threaded holes 73 in the left-right direction is located on the clamping platform 72, and the other part is located on the top surface of the support column. The second liquid cooling plate 12 is provided with through holes opposite to the threaded holes 73. The through holes penetrate through the second liquid cooling plate 12 in the vertical direction. The inner wall surface of the through holes is preferably but not limited to provided with internal threads.

[0072] There are multiple threaded connectors 9 provided corresponding to the support columns. The threaded connectors 9 are inserted through the through holes of the second liquid cooling plate 12 and are in mating connection with the threaded holes 73 of the corresponding support columns, so that the support columns and the second liquid cooling plate 12 are detachably connected through the threaded connectors 9, and have high connection stability. At the same time, since the threaded connectors 9 are detachable, it is also convenient to install and disassemble the second liquid cooling plate 12 and the support columns, so as to facilitate the installation, disassembly and maintenance of the modules between the first liquid cooling plate 11 and the second liquid cooling plate 12.

[0073] The threaded connector 9 is preferably but not limited to a bolt.

[0074] The bottom surface of the support column is adhesively or welded to the first liquid cooling plate 11, preferably welded, to ensure the stable connection between the support column and the first liquid cooling plate 11, and enable the support column to play a role in limiting and protecting the modules on the first liquid cooling plate 11.

[0075] In some embodiments, the inside of the liquid cooling plate 1 is provided with a first inclined plate 13 and a second inclined plate 14 alternately arranged along one of the length direction and the width direction of the liquid cooling plate 1. The first inclined plate 13 and the second inclined plate 14 have opposite inclination directions along one of the length direction and the width direction of the liquid cooling plate 1. A strip-shaped channel 15 is provided between adjacent first inclined plates 13 and second inclined plates 14, and the liquid cooling channel includes at least part of the strip-shaped channel 15.

[0076] As Figure 1 shown, the inside of the liquid cooling plate 1 is provided with a first inclined plate 13 and a second inclined plate 14 alternately arranged along the left-right direction. The first inclined plate 13 and the second inclined plate 14 are both strip-shaped extending along the front-back direction. The first inclined plate 13 is inclined along the direction of extending from top to bottom and from right to left, and the second inclined plate 14 is inclined along the direction of extending from top to bottom and from left to right. The first inclined plate 13 and the second inclined plate 14 divide the inner cavity of the liquid cooling plate 1 to form a strip-shaped channel 15, and the strip-shaped channel 15 is located between adjacent first inclined plates 13 and second inclined plates 14. The liquid cooling channel of the liquid cooling plate 1 includes all or part of the strip-shaped channel 15.

[0077] Since the inclination directions of the first inclined plate 13 and the second inclined plate 14 are opposite, the cross-sectional shape of the strip-shaped channel 15 is triangular or trapezoidal.

[0078] On the one hand, the first inclined plate 13 and the second inclined plate 14 form a strip-shaped channel 15, and at least part of the strip-shaped channel 15 is used to guide the flow of the liquid cooling medium to form a liquid cooling flow channel, so as to ensure the uniform temperature of the liquid cooling plate 1, thereby uniformly cooling the carried module. On the other hand, the first inclined plate 13 and the second inclined plate 14 respectively form triangular supports and cooperate with each other, so that the liquid cooling plate 1 has high structural strength and support strength, so that the liquid cooling plate 1 can carry the module without arranging a support member for supporting the whole liquid cooling plate 1 at the bottom of the liquid cooling plate 1, thereby reducing the structural complexity of the battery pack applying the liquid cooling component.

[0079] In some embodiments, the strip-shaped channel 15 includes a first strip-shaped channel 151 and a second strip-shaped channel 152. The first strip-shaped channel 151 is used to form a liquid cooling flow channel, and the second strip-shaped channel 152 accommodates air to form a heat insulation space.

[0080] As Figures 1 - 10 shown, among all the strip-shaped channels 15 in the liquid cooling plate 1, a part of the strip-shaped channels 15 are the first strip-shaped channels 151 for forming a liquid cooling flow channel, and the other part of the strip-shaped channels 15 are the second strip-shaped channels 152 for accommodating air and forming a heat insulation space.

[0081] The liquid cooling flow channel is formed through the first strip-shaped channel 151, so that the liquid cooling plate 1 can exchange heat with the module to cool it down. The heat insulation space is formed through the second strip-shaped channel 152, so that the liquid cooling plate 1 itself forms a heat insulation effect without spraying heat insulation materials on the surface of the liquid cooling plate 1, saving the production process and production cost of the liquid cooling plate 1. At the same time, through the heat insulation space, the liquid cooling medium exchanges more heat with the module.

[0082] It should be noted that for the second strip-shaped channel 152, most of the space between the first inclined plate 13 and the second inclined plate 14 forming the second strip-shaped channel 152 is used to accommodate air. Preferably but not limited to, more than 90% of the space between the first inclined plate 13 and the second inclined plate 14 in the front-rear direction is used to accommodate air.

[0083] In some embodiments, the top wall of the liquid cooling plate 1 forms at least part of the wall surface of the first strip-shaped channel 151. In the first strip-shaped channel 151 whose wall surface is formed by the top wall of the liquid cooling plate 1, the size of the first strip-shaped channel 151 in the alternately arranged direction decreases from top to bottom.

[0084] As Figures 1 - 10 shown, the inner cavity of the liquid cooling plate 1 penetrates the liquid cooling plate 1 in the front-rear direction, so that the liquid cooling plate 1 has a top wall and a bottom wall oppositely arranged in the vertical direction, and two side walls oppositely arranged in the left-right direction. The inner cavity of the liquid cooling plate 1 is provided with a first inclined plate 13 and a second inclined plate 14, and forms a first strip-shaped channel 151 and a second strip-shaped channel 152.

[0085] AsFigure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 9 As shown in Figure 7 and Figure 9 , in the first liquid cooling plate 11, the upper wall surfaces of all the first strip-shaped channels 151 are formed by the top wall of the first liquid cooling plate 11, and the size of each first strip-shaped channel 151 in the left-right direction decreases from top to bottom, so that the liquid cooling medium in the first strip-shaped channel 151 has the largest contact area with the top wall of the first liquid cooling plate 11, thereby producing a better heat exchange and cooling effect on the module carried by the first liquid cooling plate 11.

[0086] As Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 10 As shown in Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 10 , in the second liquid cooling plate 12, except for the first strip-shaped channels 151 directly communicating with the docking outlet 3 of the second liquid cooling plate 12, the upper wall surfaces of the remaining first strip-shaped channels 151 are formed by the top wall of the second liquid cooling plate 12. Among the remaining first strip-shaped channels 151, the size of each first strip-shaped channel 151 in the left-right direction decreases from top to bottom, so that the liquid cooling medium in the first strip-shaped channel 151 has the largest contact area with the top wall of the second liquid cooling plate 12, thereby producing a better heat exchange and cooling effect on the module carried by the second liquid cooling plate 12.

[0087] It should be noted that the strip-shaped channels 15 whose size decreases from top to bottom in the left-right direction are not limited to being all the first strip-shaped channels 151, and a part of the strip-shaped channels 15 whose size decreases from top to bottom in the left-right direction can also be used as the second strip-shaped channels 152.

[0088] In some embodiments, the inner cavity of the liquid cooling plate 1 includes a top layer space 17 and a bottom layer space 18. The first inclined plates 13 and the second inclined plates 14 are alternately arranged in both the top layer space 17 and the bottom layer space 18. A part of the strip-shaped channels 15 in the top layer space 17 are the first strip-shaped channels 151, and another part of the strip-shaped channels 15 are the second strip-shaped channels 152. In the bottom layer space 18 of the first liquid cooling plate 11, all the strip-shaped channels 15 are the second strip-shaped channels 152. In the bottom layer space 18 of the second liquid cooling plate 12, all the strip-shaped channels 15 are the second strip-shaped channels 152, or the strip-shaped channels 15 communicated with the docking outlet 3 of the second liquid cooling plate 12 are the first strip-shaped channels 151, and the remaining strip-shaped channels 15 are all the second strip-shaped channels 152.

[0089] As Figures 1 - 10As shown, the inner cavity of the liquid cooling plate 1 is provided with a horizontally arranged partition plate, which divides the inner cavity of the liquid cooling plate 1 into a top space 17 and a bottom space 18. The top space 17 is located above the bottom space 18. The top space 17 and the bottom space 18 are both provided with alternately arranged first inclined plates 13 and second inclined plates 14 to divide the top space 17 and the bottom space 18 respectively to form a plurality of strip channels 15.

[0090] In the first liquid cooling plate 11, a part of the strip channels 15 in the top space 17 are the first strip channels 151, and the sizes of the first strip channels 151 in the left-right direction both decrease from top to bottom. Another part of the strip channels 15 in the top space 17 are the second strip channels 152, and the sizes of the second strip channels 152 in the left-right direction can decrease from top to bottom or increase from top to bottom. All the strip channels 15 in the bottom space 18 are the second strip channels 152.

[0091] In the second liquid cooling plate 12, a part of the strip channels 15 in the top space 17 are the first strip channels 151, and the sizes of the first strip channels 151 in the top space 17 in the left-right direction both decrease from top to bottom. Another part of the strip channels 15 in the top space 17 are the second strip channels 152, and the sizes of the second strip channels 152 in the left-right direction can decrease from top to bottom or increase from top to bottom. In the bottom space 18, the strip channel at the leftmost end and directly communicating with the docking outlet 3 of the second liquid cooling plate 12 is the first strip channel 151, and the size of this first strip channel 151 in the left-right direction increases along the direction from top to bottom, and the remaining strip channels 15 are all the second strip channels 152.

[0092] By setting the top space 17 and the bottom space 18, and arranging the first inclined plates 13 and the second inclined plates 14 alternately in both the top space 17 and the bottom space 18, the structural strength and the support strength of the liquid cooling plate are further improved. The top space 17 functions for the flow and heat exchange of the liquid cooling medium and air insulation, mainly for the flow and heat exchange of the liquid cooling medium. The bottom space functions for air insulation, so that more liquid cooling medium in the liquid cooling plate 1 exchanges heat with the loaded modules.

[0093] It can be understood that in some other embodiments, all the strip channels in the bottom space of the second liquid cooling plate can also be the second strip channels. All the strip channels in the top space of the liquid cooling plate can be the first strip channels.

[0094] In some embodiments, the liquid cooling channel includes a conversion channel 16 and multiple groups of strip channels 15 arranged in sequence. Each group of strip channels 15 includes multiple strip channels 15 arranged in sequence with the same internal medium flow direction. Each group of strip channels 15 has a head end and a tail end that are oppositely arranged along the extension direction of the strip channels 15. Along the arrangement direction of the multiple groups of strip channels 15, one end of the extension direction of the first group of strip channels 15 is connected to the total inlet 4 through the corresponding conversion channel 16 and serves as the head end of the first group of strip channels 15. The tail end of the previous group of strip channels 15 is connected to the same end of the next group of strip channels 15 through the corresponding strip channel 15, and the end of the next group of strip channels 15 connected to the tail end of the previous group of strip channels 15 serves as the head end. The tail end of the last group of strip channels 15 is communicated with the total outlet 5 through the corresponding conversion channel 16.

[0095] As Figure 3 , Figure 5 , Figure 9 and Figure 10 shown, the liquid cooling channel includes a conversion channel 16 and multiple groups of first strip channels 151 arranged in sequence along the left - right direction. Each group of first strip channels 151 includes multiple first strip channels 151 arranged in sequence along the left - right direction with the same internal liquid cooling medium flow direction. The first strip channels 151 extend along the front - back direction, and the conversion channel 16 extends along the left - right direction. The conversion channel 16 is arranged at the front and back ends of the liquid cooling plate 1.

[0096] It should be noted that the number of strip channels 15 included in the multiple groups of first strip channels 151 is not necessarily the same as the number of strip channels 15 inside the liquid cooling plate 1. Preferably, a part of the strip channels 15 are first strip channels 151, and another part of the strip channels 15 are second strip channels 152.

[0097] It should be noted that the number of first strip channels 151 included in the multiple groups of first strip channels 151 is not necessarily the same as the number of first strip channels 151 inside the liquid cooling plate 1. Since the flow directions of the liquid cooling media of the multiple first strip channels 151 in each group are the same, they can all flow from front to back or all flow from back to front. Therefore, when the flow direction of the liquid cooling medium of a single first strip channel 151 is opposite to that of the adjacent group of first strip channels 151, this first strip channel 151 is not regarded as a group of first strip channels 151, but still belongs to the liquid cooling channel. At this time, the number of first strip channels 151 included in the multiple groups of first strip channels 151 is less than the number of first strip channels 151 inside the liquid cooling plate 1.

[0098] As Figure 9As shown, three groups of first strip channels 151 arranged in sequence from right to left are provided in the top space 17 of the first liquid cooling plate 11. The liquid cooling medium enters the first conversion channel 16 from the total inlet 4. The first conversion channel 16 is located on the front right side of the first liquid cooling plate 11 and is connected to the head end of the first group of first strip channels 151 (such as the front end shown in Figure 9 ). The liquid cooling medium enters the first group of first strip channels 151 from the first conversion channel 16 and flows from front to back, and then enters the second conversion channel 16. The second conversion channel 16 is located on the right side and the middle of the rear end of the first liquid cooling plate 11. The second conversion channel 16 connects the tail end of the first group of first strip channels 151 (such as the rear end shown in Figure 9 ) with the head end of the second group of first strip channels 151 (such as the rear end shown in Figure 9 ) to supply the liquid cooling medium into the second group of first strip channels 151 and flow from back to front, and then enter the third conversion channel 16. The third conversion channel 16 is located on the middle and left side of the front end of the first liquid cooling plate 11. The third conversion channel 16 connects the tail end of the second group of first strip channels 151 (such as the front end shown in Figure 9 ) with the head end of the third group of first strip channels 151 (such as the front end shown in Figure 9 ) to supply the liquid cooling medium into the third group of first strip channels 151 and flow from front to back, and then enter the fourth conversion channel 16. The fourth conversion channel 16 is located on the left side of the rear end of the first liquid cooling plate 11. The fourth conversion channel 16 connects the tail end of the third group of first strip channels 151 (such as the rear end shown in Figure 9 ) with the rear end of an independent first strip channel 151 at the leftmost end in the first liquid cooling plate 11. The front end of the leftmost first strip channel 151 is connected to the total outlet 5, so as to indirectly connect the fourth conversion channel 16 with the total outlet 5 through the leftmost first strip channel 151, thereby indirectly connecting the tail end of the third group of first strip channels 151 with the total outlet 5 through the fourth conversion channel 16 and the leftmost first strip channel 151.

[0099] Such as Figure 3 , Figure 5 , Figure 9 and Figure 10As shown in the figure, three groups of first strip channels 151 arranged in sequence from right to left are provided in the top layer space 17 of the second liquid cooling plate 12. A first communication port 113 is provided at the front right end of the partition plate of the second liquid cooling plate 12. The total inlet 4, the docking outlet 3 of the first liquid cooling plate 11, the docking flow channel 71 of the front and rear supports 7, the docking inlet 2 of the second liquid cooling plate 12, the first communication port 113, and the first conversion channel 16 are connected in sequence, so that the total inlet 4 and the first conversion channel 16 are indirectly connected, thereby enabling the liquid cooling medium to enter the first conversion channel 16. The first conversion channel 16 is located at the front right side of the second liquid cooling plate 12 and is connected to the head end of the first group of first strip channels 151 (such as the front end shown in Figure 10 ). The liquid cooling medium enters the first group of first strip channels 151 from the first conversion channel 16 and flows from front to back, and then enters the second conversion channel 16. The second conversion channel 16 is located at the right side and the middle of the rear end of the second liquid cooling plate 12. The second conversion channel 16 connects the tail end of the first group of first strip channels 151 (such as the rear end shown in Figure 9 ) to the head end of the second group of first strip channels 151 (such as the rear end shown in Figure 9 ) to supply the liquid cooling medium into the second group of first strip channels 151 and flow from back to front, and then enter the third conversion channel 16. The third conversion channel 16 is located at the middle and the left side of the front end of the second liquid cooling plate 12. The third conversion channel 16 connects the tail end of the second group of first strip channels 151 (such as the front end shown in Figure 9 ) to the head end of the third group of first strip channels 151 (such as the front end shown in Figure 9 ) to supply the liquid cooling medium into the third group of first strip channels 151 and flow from front to back, and then enter the fourth conversion channel 16. The fourth conversion channel 16 is located at the left side of the rear end of the second liquid cooling plate 12. The fourth conversion channel 16 connects the tail end of the third group of first strip channels 151 (such as the rear end shown in Figure 9 ) to the second communication port 114. The second communication port 114 is provided at the rear left end of the partition plate of the second liquid cooling plate 12. The second communication port 114 is connected to the rear end of the leftmost independent first strip channel 151 in the bottom layer space 18 of the second liquid cooling plate 12. The front end of the leftmost first strip channel 151 in the bottom layer space 18 is connected to the docking outlet 3 of the second liquid cooling plate 12, and is connected in sequence to the docking flow channel 71 of the front left support 7, the docking inlet 2 of the first liquid cooling plate 11, and the total outlet 5, so as to indirectly connect the tail end of the third group of first strip channels 151 to the total outlet 5 through the fourth conversion channel 16, the leftmost first strip channel 151 in the bottom layer space 18, the docking flow channel 71 of the front left support 7, and the docking inlet 2 of the first liquid cooling plate 11.

[0100] The liquid cooling medium is allowed to fully flow in the liquid cooling plate 1 through the multiple groups of first strip-shaped channels 151 and the multiple conversion channels 16, and the liquid cooling plate 1 is made to have a uniform temperature, thereby performing uniform heat exchange and cooling on the carried modules.

[0101] It can be understood that the liquid cooling channel is not limited to including the conversion channel and multiple groups of first strip channels arranged in sequence, but also includes a single first strip channel with a flow direction opposite to that of an adjacent group of first strip channels.

[0102] In some embodiments, the liquid cooling plate 1 is further provided with a first outer plate 19 , a second outer plate 110 , a first inner plate 111 and a second inner plate 112 .

[0103] A first outer plate 19 and a first inner plate 111 are provided at both ends of the top space 17 of the first liquid cooling plate 11 along the extension direction of the strip channel 15. The first outer plate 19 and the first inner plate 111 are spaced apart to form a conversion channel 16. In the top space 17 of the first liquid cooling plate 11, the second strip channels 152 opposite to the conversion channel 16 are closed by the first inner plate 111 to separate the conversion channel 16 and the second strip channels 152. One of the first outer plates 19 is provided with a total inlet 4 and a total outlet 5.

[0104] like Figures 1 - 9 As shown, the first outer plate 19 and the first inner plate 111 are provided at the front and rear ends of the first liquid cooling plate 11, and the first outer plate 19 and the first inner plate 111 are both located in the top space 17, the first outer plate 19 and the first inner plate 111 are arranged at intervals along the front and rear direction, and the first inner plate 111 is adjacent to the middle part of the first liquid cooling plate 11 along the front and rear direction relative to the first outer plate 19.

[0105] The space between the first outer plate 19 and the first inner plate 111 forms a conversion channel 16. The first outer plate 19 is located at one end of the conversion channel 16 away from the connected first strip channel 151, and is used to prevent leakage of the liquid cooling medium in the first liquid cooling plate 11. The end of the second strip channel 152 opposite to the conversion channel 16 is provided with a corresponding first inner plate 111, and the cross section of the first inner plate 111 is consistent with the transverse base plane of the second strip channel 152, so as to close one end of the second strip channel 152 facing the conversion channel 16, and prevent the liquid cooling medium from entering the second strip channel 152 from the conversion channel 16. The ends of the first inclined plate 13 and the second inclined plate 14 forming the second strip channel 152 opposite to the conversion channel 16 are located in the first liquid cooling plate 11, so that the first outer plate 19 can be installed at the front and rear ends of the first liquid cooling plate 11 to form the conversion channel 16.

[0106] The first outer plate 19 located at the front end of the first liquid cooling plate 11 is provided with a main inlet 4 and a main outlet 5 .

[0107] Since the strip channels 15 in the bottom layer space of the first liquid cooling plate 11 are all second strip channels 152, there is no need to provide the first outer plate 19 and the first inner plate 111 in the bottom layer space of the first liquid cooling plate 11.

[0108] The first outer plate 19 and the first inner plate 111 can be respectively provided as an integral structure or can be provided in multiple numbers. Preferably, both the first outer plate 19 and the first inner plate 111 are provided in multiple numbers. Corresponding first inner plates 111 are provided at the ends of the second strip channels 152 opposite to the conversion channels 16. Corresponding second strip channels 152 are provided between adjacent conversion channels 16 at the same end of the first liquid cooling plate 11. The ends of the first inclined plate 13 and the second inclined plate 14 forming the second strip channel 152 are flush with the end face of the corresponding end of the first liquid cooling plate 11 in the front-rear direction to separate the adjacent conversion channels 16. Corresponding first outer plates 19 are provided on both sides of the separation. Therefore, it can be understood that both the front and rear ends of the second strip channel 152 can be open, or one end can be open and the other end can be closed by the first inner plate 111, or both ends can be respectively closed by the first inner plates 111.

[0109] It should be noted that the first outer plate 19 is not limited to being provided at the outer end of the conversion channel 16. As Figure 1 and Figure 9 shown, a corresponding first outer plate 19 is provided at the front end of the first strip channel 151 at the leftmost end in the top layer space 17, but the first inner plate 111 is not provided, and a total outlet 5 is provided at a section of the first outer plate 19.

[0110] It should be noted that the first inner plate 111 is not limited to being flush with the ends of the connected first inclined plate 13 and the second inclined plate 14. As Figure 9 shown, a first inner plate 111 is provided at the front end of the second strip channel 152 at the rightmost end in the top layer space 17. Since the docking outlet 3 of the first liquid cooling plate 11 needs to be communicated with the total inlet 4, the first inner plate 111 is located on the side of the docking outlet 3 away from the total inlet 4.

[0111] The second outer plate 110 and the second inner plate 112 are provided at both ends of the top space 17 of the second liquid cooling plate 12 along the extension direction of the strip channel 15. The second outer plate 110 and the second inner plate 112 are spaced apart to form a conversion channel 16. In the top space 17 of the second liquid cooling plate 12, the second strip channel 152 opposite to the conversion channel 16 is closed by the second inner plate 112 to separate the conversion channel 16 and the second strip channel 152. The bottom surface of the second liquid cooling plate 12 is provided with a docking inlet 2 and a docking outlet 3. In the bottom space 18 of the second liquid cooling plate 12, one end of the second strip channel 152 connected to one of the docking inlet 2 and the docking outlet 3 is provided with a second outer plate 110 and the second inner plate 112. Plate 110 and a second inner plate 112, the second inner plate 112 separates the second strip channel 152, and makes one of the docking inlet 2 and the docking outlet 3 located between the second outer plate 110 and the second inner plate 112, and a first connecting port 113 is provided between the second strip channel 152 and the conversion channel 16, the first connecting port 113 is located between the second outer plate 110 and the second inner plate 112, and both ends of the first strip channel 151 connected to the other of the docking inlet 2 and the docking outlet 3 are provided with the second outer plate 110, and one end of the first strip channel 151 is connected to the other of the docking inlet 2 and the docking outlet 3, and the other end is provided with a second connecting port 114 connected to the conversion channel 16.

[0112] like Figures 1 - 10 As shown, the second outer plate 110 and the second inner plate 112 are provided at both the front and rear ends of the second liquid cooling plate 12, most of the second outer plate 110 and the second inner plate 112 are located in the top space 17, and a small part is located in the bottom space 18. The second outer plate 110 and the second inner plate 112 are arranged at intervals along the front-to-back direction, and the second inner plate 112 is adjacent to the middle part of the second liquid cooling plate 12 along the front-to-back direction relative to the second outer plate 110.

[0113] In the top space 17, the space between the second outer plate 110 and the second inner plate 112 forms a conversion channel 16. The second outer plate 110 is located at one end of the conversion channel 16 away from the connected first strip channel 151, which is used to prevent leakage of the liquid cooling medium in the second liquid cooling plate 12. The end of the second strip channel 152 opposite to the conversion channel 16 is provided with a corresponding second inner plate 112, and the cross section of the second inner plate 112 is consistent with the transverse base plane of the second strip channel 152, so as to close one end of the second strip channel 152 toward the conversion channel 16, and prevent the liquid cooling medium from entering the second strip channel 152 from the conversion channel 16. The ends of the first inclined plate 13 and the second inclined plate 14 forming the second strip channel 152 opposite to the conversion channel 16 are located in the second liquid cooling plate 12, so that the second outer plate 110 can be installed at the front and rear ends of the second liquid cooling plate 12 to form the conversion channel 16.

[0114] Since the docking inlet 2 and the docking outlet 3 of the second liquid cooling plate 12 are provided on the bottom surface of the second liquid cooling plate 12, the docking inlet 2 and the docking outlet 3 need to enter the top space 17 through the bottom space 18. As Figure 1 , Figure 3 and Figure 10 shown, at the front end of the second strip-shaped channel 152 at the rightmost end in the bottom space 18, a corresponding second inner plate 112 and a second outer plate 110 are provided. The docking inlet 2 is located between the extension parts of the second inner plate 112 and the second outer plate 110. At the front and rear ends of the partition plate of the second liquid cooling plate 12, a first communication port 113 is provided to communicate the docking inlet 2 with the first conversion channel 16 in the top space 17. As Figures 4 - 8 shown, at the rear left end of the partition plate of the second liquid cooling plate 12, a second communication port 114 is provided. The second communication port 114 communicates the last conversion channel 16 in the top space 17 with the rear end of the first strip-shaped channel 151 at the leftmost end in the bottom space 18. The rear end and the front end of the first strip-shaped channel 151 at the leftmost end in the bottom space 18 are both closed by the second outer plate 110. The liquid cooling medium enters the first strip-shaped channel 151 from the second communication port 114 and then flows forward, and then enters the docking outlet 3 located at the front end of the first strip-shaped channel 151. It can be seen from this that in the bottom space 18 of the second liquid cooling plate 12, the second outer plate 110 is provided at both the front and rear ends of the first strip-shaped channel 151 at the leftmost end, and the second outer plate 110 and the second inner plate 112 are provided at the front end of the second strip-shaped channel 152 at the rightmost end.

[0115] The second outer plate 110 and the second inner plate 112 can be respectively set as an integral structure, or can be set as multiple. Preferably, both the second outer plate 110 and the second inner plate 112 are set as multiple. At the end of the second strip-shaped channel 152 opposite to the conversion channel 16, a corresponding second inner plate 112 is provided. Between the adjacent conversion channels 16 at the same end of the second liquid cooling plate 12, a corresponding second strip-shaped channel 152 is provided. The ends of the first inclined plate 13 and the second inclined plate 14 forming the second strip-shaped channel 152 are flush with the end face of the corresponding end of the second liquid cooling plate 12 in the front-rear direction to separate the adjacent conversion channels 16. On both sides of the separation, second outer plates 110 corresponding to the conversion channels 16 are provided.

[0116] It should be noted that the second outer plate 110 is not limited to being provided at the outer end of the conversion channel 16. As Figure 1 , Figure 3 and Figure 10 shown, in the bottom space 18 of the second liquid cooling plate 12, the second outer plate 110 is provided at both the front and rear ends of the first strip-shaped channel 151 at the leftmost end, and the second outer plate 110 is provided at the front end of the second strip-shaped channel 152 at the rightmost end.

[0117] It should be noted that the second inner plate 112 is not limited to being flush with the ends of the connected first inclined plate 13 and second inclined plate 14. For example, Figure 3 As shown, a second inner plate 112 is provided at the front end of the second strip-shaped channel 152 at the rightmost end in the top layer space 17. The size of the second strip-shaped channel 152 in the left-right direction decreases from top to bottom. A second inner plate 112 is provided at the front end of the second strip-shaped channel 152 at the rightmost end in the bottom layer space 18. Since the docking entrance 2 and the first communication port 113 are provided here, the two second inner plates 112 are located inside the first communication port 113, and the lower second inner plate 112 is also located inside the docking entrance 2.

[0118] Next, reference will be made to Figures 1 - 14 describe the battery pack according to an embodiment of the present invention.

[0119] As Figures 1 - 14 shown, the battery pack according to an embodiment of the present invention includes a box body 10 and the liquid cooling component according to an embodiment of the present invention.

[0120] The first liquid cooling plate 11 forms the bottom plate of the box body 10. The second liquid cooling plate 12 is located inside the box body 10. Both the first liquid cooling plate 11 and the second liquid cooling plate 12 carry the module 70.

[0121] For the battery pack according to an embodiment of the present invention, by adopting the liquid cooling component according to an embodiment of the present invention and forming the first liquid cooling plate into the bottom plate of the box body, so that both the first liquid cooling plate and the second liquid cooling plate carry the module, the battery pack has a simple and reliable structure, and has a simple production line and production process, as well as a lower production cost. At the same time, it is convenient for assembly and maintenance.

[0122] In addition, since there is no need to separately provide a liquid supply pipeline and an interface connected to the liquid supply pipeline for the second liquid cooling plate, the risk of liquid leakage can be reduced, and at the same time, the space utilization rate of the battery pack can be improved to accommodate more battery cells, in other words, to accommodate a larger module.

[0123] In some embodiments, clamping grooves 6 are provided on the bottom surfaces at both ends in the length direction and / or at both ends in the width direction of the liquid cooling plate 1. Protrusions 101 are provided at the bottoms at both ends in the length direction and / or at both ends in the width direction of the box body 10. The protrusions 101 are fitted into the corresponding clamping grooves 6 of the first liquid cooling plate 11.

[0124] As Figure 1 and Figure 14 shown, a protrusion 101 extending to the right is provided at the bottom of the left side wall of the box body 10, and a protrusion 101 extending to the left is provided at the bottom of the right side wall of the box body 10. Both of the two protrusions 101 are preferably but not limited to being strip-shaped extending in the front-rear direction.

[0125] The boss 101 at the left end is fitted into the left-end card slot 6 of the first liquid cooling plate 11, and the boss 101 at the right end is fitted into the right-end card slot 6 of the boss 101. The first liquid cooling plate 11 is carried by the mutual cooperation of the card slot 6 and the boss 101, so that the first liquid cooling plate 11 forms the bottom plate of the box body 10. At the same time, both the first liquid cooling plate 11 and the second liquid cooling plate 12 need to be provided with card slots 6 to have a generally consistent processing technology.

[0126] In some embodiments, the battery pack of the embodiment of the present invention further includes a module fixing beam 20. Support members 7 are connected to both ends in the width direction of the liquid cooling plate 1. Module fixing beams 20 are provided at both ends in the length direction of the liquid cooling plate 1. The module fixing beam 20 and the module 70 on the same liquid cooling plate 1 are detachably connected through a connecting member 30.

[0127] Such as Figure 13 and Figure 14 As shown, corresponding module fixing beams 20 are provided on the top surfaces at the front and rear ends of each liquid cooling plate 1. The module fixing beam 20 and the liquid cooling plate 1 carrying it can be welded or connected through connecting members such as bolts. The module fixing beam 20 extends in the left-right direction and is provided with a plurality of threaded connection holes arranged at intervals in the left-right direction. Connecting members 30 such as bolts are provided at the front and rear ends of the module 70 carried by the liquid cooling plate 1. The bottom of the connecting member 30 is fitted into the corresponding threaded connection hole, so as to connect the module 70 on the liquid cooling plate 1 and the module fixing beam 20 through the connecting member 30, thereby fixing the module 70 on the corresponding liquid cooling plate 1.

[0128] In some embodiments, the box body 10 includes a detachable upper box 102 and a lower box 103. The first liquid cooling plate 11 forms the bottom plate of the lower box 103, and the second liquid cooling plate 12 is located on the top of the lower box 103.

[0129] Such as Figure 12 and Figure 13 As shown, the box body 10 includes a detachable upper box 102 and a lower box 103. The bottom of the upper box 102 is provided with an opening, and the top of the lower box 103 is provided with an opening. The upper box 102 and the lower box 103 are arranged opposite to each other in the up-down direction. A boss 101 is provided on the left-side wall of the lower box 103 and is preferably but not limited to being welded to the left-row support member 7. A boss 101 is provided on the right-side wall of the lower box 103 and is preferably but not limited to being welded to the right-row support member 7. Thus, the first liquid cooling plate 11 forms the bottom plate of the lower box 103, and the second liquid cooling plate 12 is located on the top of the lower box 103. The module 70 carried by the first liquid cooling plate 11 is located inside the lower box 103, the module 70 carried by the second liquid cooling plate 12 is located inside the upper box 102, and the second liquid cooling plate 12 is located inside the lower box 103.

[0130] Further, a low-voltage plug-in 104 and a high-voltage plug-in 105 are provided on one of the side walls of the lower box 103.

[0131] In some embodiments, the battery pack of the embodiments of the present invention further includes a support plate 40 and a support rod 50. The support plate 40 is disposed between one end of the second liquid cooling plate 12 and the side wall of the lower case 103. The support plate 40 is disposed on the support rod 50, and the support rod 50 is disposed on the module fixing beam 20. The support plate 40 is used to support the electrical component 80 and / or the BMS 90.

[0132] As Figure 13 and Figure 14 shown, there is a gap between the rear end of the second liquid cooling plate 12 and the rear side wall of the lower case 103 for installing the support plate 40. Two support rods 50 are provided on the module fixing beam 20 at the rear end of the first liquid cooling plate 11. Preferably, one of the support rods 50 is welded to the left side wall of the lower case 103, and the other support rod 50 is welded to the right side wall of the lower case 103. The support plate 40 is disposed on the tops of the two support rods 50 and is connected to the support rods 50 through connecting members such as bolts. The support plate 40 is used to carry the electrical component 80 and the BMS 90.

[0133] In some embodiments, the battery pack of the embodiments of the present invention further includes a protection seal 60. Protection seals 60 are provided at both the front and rear ends of the lower case 103. The protection seals 60 are used to seal the end faces of the first liquid cooling plate 11 in the front-rear direction.

[0134] As Figures 12 - 14 shown, the protection seal 60 is U-shaped. One of the protection seals 60 is disposed on the front end faces of the left side wall and the right side wall of the lower case 103 and the front end face of the first liquid cooling plate 11, and the other protection seal 60 is disposed on the rear end faces of the left side wall and the right side wall of the lower case 103 and the rear end face of the first liquid cooling plate 11. To prevent intrusion of foreign matters such as dust and particles.

[0135] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0136] In addition, the terms "first" and "second" are used for distinction only and shall not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0137] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "connected to", "fixed" and the like shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0138] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0139] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0140] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A liquid cooling component, characterized in that: include: A liquid cooling plate (1), wherein a liquid cooling channel is provided inside the liquid cooling plate (1), and a docking inlet (2) and a docking outlet (3) are provided on an end surface in a thickness direction of the liquid cooling plate (1), and both the docking inlet (2) and the docking outlet (3) are connected to the liquid cooling channel. The liquid cooling plate (1) comprises a first liquid cooling plate (11) and a second liquid cooling plate (12), and the first liquid cooling plate (11) is further provided with a total inlet (4) and a total outlet (5), and the total inlet (4) and the total outlet (5) are connected to the liquid cooling channel of the first liquid cooling plate (11); A support member (7), wherein the support member (7) is connected between the first liquid cooling plate (11) and the second liquid cooling plate (12), and there are at least two of the support members (7), and at least two of the support members (7) are provided with a docking channel (71), wherein one of the docking channels (71) is connected between the docking outlet (3) of the first liquid cooling plate (11) and the docking inlet (2) of the second liquid cooling plate (12), and the other of the docking channels (71) is connected between the docking outlet (3) of the second liquid cooling plate (12) and the docking inlet (2) of the first liquid cooling plate (11).

2. The liquid cooling assembly according to claim 1, characterized in that: The support member (7) comprises support columns, which are arranged in at least two rows, each row comprising at least two support columns arranged at intervals, wherein two support columns are provided with the docking flow channel (71) penetrating along the length direction.

3. The liquid cooling assembly according to claim 2, characterized in that: It also comprises a sealing ring (8), which is arranged at the end of the support column provided with the docking flow channel (71) and surrounds the opening of the docking flow channel (71) formed on the support column.

4. The liquid cooling assembly according to claim 2, characterized in that: The bottom surface at both ends of the length direction and / or the bottom surface at both ends of the width direction of the liquid cooling plate (1) is provided with a card slot (6), and the top surface of the support column is provided with a card platform (72), and the card platform (72) is matched in the card slot (6) of one of the first liquid cooling plate (11) and the second liquid cooling plate (12), and the top surface of the support column is against the bottom surface of one of the first liquid cooling plate (11) and the second liquid cooling plate (12).

5. The liquid cooling assembly according to claim 4, characterized in that: It also includes a threaded connector (9), the clamping platform (72) is provided with a threaded hole (73), or the clamping platform (72) and the top surface of the support column are provided with a threaded hole (73), the threaded connector (9) is passed through one of the first liquid cooling plate (11) and the second liquid cooling plate (12), and is connected to the threaded hole (73), and the bottom surface of the support column is bonded or welded to the other of the first liquid cooling plate (11) and the second liquid cooling plate (12).

6. The liquid cooling assembly according to claim 1, characterized in that: The liquid cooling plate (1) is provided with a first inclined plate (13) and a second inclined plate (14) alternately arranged along one of the length direction and the width direction of the liquid cooling plate (1), the first inclined plate (13) and the second inclined plate (14) are inclined in opposite directions along one of the length direction and the width direction of the liquid cooling plate (1), a strip channel (15) is provided between adjacent first inclined plates (13) and second inclined plates (14), and the liquid cooling channel includes at least a portion of the strip channel (15).

7. The liquid cooling assembly according to claim 6, characterized in that: The liquid cooling channel comprises a conversion channel (16) and a plurality of groups of strip channels (15) arranged in sequence, each group of the strip channels (15) comprises a plurality of strip channels (15) arranged in sequence and having the same internal medium flow direction, each group of the strip channels (15) has a head end and a tail end arranged oppositely along the extension direction of the strip channels (15), and along the arrangement direction of the plurality of groups of the strip channels (15), one end of the first group of the strip channels (15) in the extension direction passes through the corresponding conversion channel ( 16) is connected to the main inlet (4) and serves as the head end of the first group of the strip channels (15); the tail end of the previous group of the strip channels (15) is connected to the same end of the next group of the strip channels (15) through the corresponding strip channels (15); and the end of the next group of the strip channels (15) connected to the tail end of the previous group of the strip channels (15) serves as the head end; the tail end of the last group of the strip channels (15) is connected to the main outlet (5) through the corresponding conversion channel (16).

8. The liquid cooling assembly according to claim 7, characterized in that: The strip-shaped channel (15) comprises a first strip-shaped channel (151) and a second strip-shaped channel (152), wherein the first strip-shaped channel (151) is used to form the liquid cooling channel, and the second strip-shaped channel (152) accommodates air to form a heat-insulating space.

9. The liquid cooling assembly according to claim 8, characterized in that: The top wall of the liquid cooling plate (1) forms at least part of the wall surface of the first strip-shaped channel (151); in the first strip-shaped channel (151) whose wall surface is formed by the top wall of the liquid cooling plate (1), the size of the first strip-shaped channel (151) decreases from top to bottom along the direction of the alternating arrangement.

10. The liquid cooling assembly according to claim 8, characterized in that: The inner cavity of the liquid cooling plate (1) comprises a top space (17) and a bottom space (18), and the first inclined plates (13) and the second inclined plates (14) are arranged alternately in the top space (17) and the bottom space (18); a part of the strip channels (15) in the top space (17) are first strip channels (151), and another part of the strip channels (15) are second strip channels (152); in the bottom space (18) of the first liquid cooling plate (11), the strip channels (15) are all the second strip channels (152); in the bottom space (18) of the second liquid cooling plate (12), the strip channels (15) are all the second strip channels (152); or, the strip channels (15) connected to the docking outlet (3) of the second liquid cooling plate (12) are the first strip channels (151), and the remaining strip channels (15) are all the second strip channels (152).

11. The liquid cooling assembly according to claim 10, characterized in that: The liquid cooling plate (1) is further provided with a first outer plate (19), a second outer plate (110), a first inner plate (111) and a second inner plate (112); The first outer plate (19) and the first inner plate (111) are provided at both ends of the top space (17) of the first liquid cooling plate (11) along the extension direction of the strip-shaped channel (15); the first outer plate (19) and the first inner plate (111) are arranged at intervals to form the conversion channel (16); in the top space (17) of the first liquid cooling plate (11), the second strip-shaped channel (152) opposite to the conversion channel (16) is closed by the first inner plate (111) to separate the conversion channel (16) and the second strip-shaped channel (152); one of the first outer plates (19) is provided with the main inlet (4) and the main outlet (5); The second outer plate (110) and the second inner plate (112) are provided at both ends of the top space (17) of the second liquid cooling plate (12) along the extension direction of the strip-shaped channel (15); the second outer plate (110) and the second inner plate (112) are arranged at intervals to form the conversion channel (16); in the top space (17) of the second liquid cooling plate (12), the second strip-shaped channel (152) opposite to the conversion channel (16) is closed by the second inner plate (112) to separate the conversion channel (16) and the second strip-shaped channel (152); the bottom surface of the second liquid cooling plate (12) is provided with the docking inlet (2) and the docking outlet (3); in the bottom space (18) of the second liquid cooling plate (12), one end of the second strip-shaped channel (152) connected to one of the docking inlet (2) and the docking outlet (3) is provided with the interval of the second inner plate (112). The invention relates to a second strip channel (152) having two outer plates (110) and a second inner plate (112), wherein the second inner plate (112) separates the second strip channel (152) and enables one of the docking inlet (2) and the docking outlet (3) to be located between the second outer plate (110) and the second inner plate (112), and a first connecting port (113) is provided between the second strip channel (152) and the conversion channel (16), and the first connecting port (113) is located between the second outer plate (110) and the second inner plate (112), and the first strip channel (151) connected to the other of the docking inlet (2) and the docking outlet (3) is provided with the second outer plate (110) at both ends, and one end of the first strip channel (151) is connected to the other of the docking inlet (2) and the docking outlet (3), and the other end is provided with a second connecting port (114) connected to the conversion channel (16).

12. A battery pack, characterized in that: include: A box (10) and a liquid cooling assembly according to any one of claims 1 to 11, wherein the first liquid cooling plate (11) forms a bottom plate of the box (10), the second liquid cooling plate (12) is located inside the box (10), and the first liquid cooling plate (11) and the second liquid cooling plate (12) both carry a module (70).

13. The battery pack according to claim 12, characterized in that: The bottom surfaces at both ends of the length direction and / or the bottom surfaces at both ends of the width direction of the liquid cooling plate (1) are provided with card slots (6), and the bottom surfaces at both ends of the length direction and / or the bottom surfaces at both ends of the width direction of the box body (10) are provided with bosses (101), and the bosses (101) are fitted in corresponding card slots (6) of the first liquid cooling plate (11).

14. The battery pack according to claim 13, characterized in that: It also includes a module fixing beam (20), the two ends of the liquid cooling plate (1) in the width direction are connected to the support member (7), the two ends of the liquid cooling plate (1) in the length direction are provided with the module fixing beam (20), and the module fixing beam (20) is detachably connected to the module (70) on the same liquid cooling plate (1) via a connecting member (30).

15. The battery pack according to claim 14, characterized in that: The box body (10) comprises a detachable upper box (102) and a lower box (103), the first liquid cooling plate (11) forms the bottom plate of the lower box (103), and the second liquid cooling plate (12) is located on the top of the lower box (103); The battery pack further comprises a support plate (40) and a support rod (50), wherein the support plate (40) is arranged between one end of the second liquid cooling plate (12) and a side wall of the lower box (103), the support plate (40) is arranged on the support rod (50), and the support rod (50) is arranged on the module fixing beam (20), and the support plate (40) is used to support the electrical components (80) and / or the BMS (90).

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