Modular Liquid Cold Plate

Abstract

The present invention relates to the technical field of battery pack liquid cooling, and discloses a modular liquid cooling plate, including a water inlet pipe, a water inlet bayonet installed outside the water inlet pipe, a liquid cooling integrated plate installed below the water inlet pipe; the liquid cooling integrated plate includes an upper cooling end plate, a mainboard is fixedly installed on the front end surface of the upper cooling end plate, a right water outlet bayonet is fixedly installed on the top of the upper cooling end plate, a left mainboard and a right mainboard are fixedly installed on the left and right end surfaces of the mainboard, a lower cooling end plate is fixedly installed on the left mainboard, the right mainboard and the front front of the mainboard, three holes are fixedly opened on the front end of the top of the upper cooling end plate, a water inlet cavity is opened on the internal top surface of the mainboard, a water distribution plate is fixedly installed in the middle of the water inlet cavity, and water channels are respectively provided on both sides of the bottom of the water distribution plate. By installing the liquid cooling integrated plate, the purpose of modularizing the cooling plate can be achieved, the R&D cost and time cost are reduced, more costs are reduced for the enterprise, work efficiency is improved and the total amount of work is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack liquid cooling, in particular to a modular liquid cooling plate. Background Art

[0002] Power batteries are the main energy storage components of electric vehicles and are key components of electric vehicles, directly affecting the performance of electric vehicles. The energy density and power density of batteries have increased with the application of lithium batteries, the discharge current has increased, and consumers have demanded fast charging, resulting in the original air cooling being no longer applicable. More efficient liquid cooling thermal management methods have gradually become the priority solution for major automakers.

[0003] At present, there are many types of new energy vehicles on the market, and there are also many types of power battery packs. Except for a small number of passenger cars equipped with liquid cooling or more advanced thermal management systems, most battery packs still have no active heat dissipation or natural air cooling thermal management methods. Therefore, there are many types of battery packs that need to be upgraded with liquid cooling. If each battery pack is designed with a special liquid cooling plate, it will cause a large investment in R&D costs and time costs, and extend the battery pack upgrade cycle. The use of modular liquid cooling plates that are compatible with multiple battery pack models can greatly shorten the development cycle and reduce costs, and accelerate the upgrade of the battery pack's liquid cooling thermal management method. Therefore, we proposed a modular liquid cooling plate. Summary of the invention

[0004] The object of the present invention is to provide a modular liquid cooling plate to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a modular liquid cooling plate, comprising a water inlet pipe, a water inlet bayonet is installed outside the water inlet pipe, and a liquid cooling integrated plate is installed below the water inlet pipe;

[0006] The liquid cooling integrated board comprises an upper cooling end plate, a mainboard is fixedly mounted on the front end surface of the upper cooling end plate, a right water outlet is fixedly mounted on the top of the upper cooling end plate, a left mainboard and a right mainboard are fixedly mounted on the left and right end surfaces of the mainboard, a lower cooling end plate is fixedly mounted on the left mainboard, the right mainboard and the front end of the mainboard, a mainboard drainage plate and a mainboard waterway are fixedly mounted between the top and bottom surfaces of the mainboard, three holes are fixedly opened on the front end of the top of the upper cooling end plate, and a water inlet is opened on the top surface of the mainboard. A cavity, a water dividing plate is fixedly installed in the middle of the water inlet cavity, water channels are respectively arranged on both sides of the bottom end of the water dividing plate, a partition is fixedly installed in the water channel, and the partition divides the water channel into three small water channels, a water exchange cavity 1 is opened on the bottom surface of the water channel, a water dividing plate is installed on the left end of the water exchange cavity 1, a water exchange cavity 2 is opened inside the cooling end plate at the upper end of the water channel, a water outlet cavity is opened on the water exchange cavity 2, and a water exchange cavity 3 is opened at the bottom of the water exchange cavity 2.

[0007] Preferably, there are two vertically installed partitions inside the water channel to divide the original water channel into three new water channels of equal size. A number of drainage plates are vertically fixedly installed inside the left main board. The drainage plates are installed at equal distances, so that the water flow direction, water flow size and water flow speed can be controlled, making the equipment more systematic.

[0008] Preferably, a water inlet is installed in the middle of the upper cooling end plate, a connecting ring is fixedly installed on the inner wall of the water inlet, a threaded sleeve is fixedly installed on the top surface of the connecting ring, a water inlet pipe is threadedly installed on the inner wall of the threaded sleeve, a connecting plate is fixedly installed in the middle of the side of the water inlet pipe, a through groove is opened through the upper and lower outer ring of the connecting plate, a nut assembly is slidably installed in the through groove, and a block is fixedly installed on the bottom surface of the connecting plate to facilitate the entry and exit of coolant and improve work efficiency.

[0009] Preferably, a second connecting plate is fixedly mounted on the bottom end of the outer surface of the threaded sleeve, and through grooves are provided on the outer side of the second connecting plate from top to bottom to facilitate clamping.

[0010] Preferably, the upper cooling end plate in the liquid-cooled integrated plate is connected to the left main board, the lower cooling end plate, the main board and the right main board by welding, and the water channels in the left main board and the right main board are installed symmetrically to better improve work efficiency.

[0011] Preferably, the direction of water flow in the water channel is from the middle to both sides in an S-shape in the bottom-up-up direction. Three holes are fixedly opened at the front end of the top surface of the upper cooling end plate, which are the left water outlet, the water inlet and the second water outlet from left to right. A left water outlet clip is correspondingly installed on the side surface at the top of the left water outlet, and the routing of the coolant is more reasonable.

[0012] Preferably, a rubber sealing strip is fixedly installed on the top surface of the second connecting plate, a card slot is opened on the top surface of the rubber sealing strip, the card slot is adapted to the card block, a fixing plate is fixedly installed on the outer circle of the top surface of the second connecting plate, the fixing plate is at the same height as the rubber sealing strip, and the rubber sealing strip can have a sealing effect on the device.

[0013] Preferably, the through slots on the connecting plate and the second outer ring of the connecting plate are correspondingly opened, and the nut assembly connects the upper and lower through slots, and the number of the nut assemblies is six. The top of the upper cooling end plate is fixedly installed with a right water outlet bayonet, and the nut can improve the stability of the device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the modular liquid cooling plate:

[0015] 1) The modular liquid cooling plate can achieve the purpose of modular combination of cooling plates by installing a liquid cooling integrated plate, reducing R&D costs and time costs, reducing more costs for the enterprise, improving work efficiency and reducing the total amount of work.

[0016] 2) The modular liquid cooling plate can seal the coolant in the liquid cooling integrated plate by installing a water inlet bayonet, thereby reducing potential safety hazards, further reducing the need for later maintenance, further reducing the workload and maintenance costs of the enterprise, and making maintenance more convenient.

[0017] 3) The modular liquid cooling plate can achieve the goal of exchanging hot and cold coolants with the coolant entering the liquid cooling integrated plate by installing a water exchange cavity, thereby achieving the first water temperature uniformity operation in the water exchange cavity, thereby achieving a better cooling effect and improving the working efficiency of the device.

[0018] 4) The modular liquid cooling plate will not flow out of the water outlet as soon as it enters by installing water channel drainage plates and partitions. It can control the flow direction of the coolant, make the cooling more balanced, make the work process clearer and eliminate safety hazards.

[0019] 5) The modular liquid cooling plate can cool down different battery modules by installing different motherboards, thus improving the applicability and operation efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall stereogram of the present invention;

[0021] Figure 2 It is an overall top view of the present invention;

[0022] Figure 3 This is a top view of the mainboard of the present invention;

[0023] Figure 4 It is an overall stereogram of the water inlet bayonet of the present invention;

[0024] Figure 5 It is a three-dimensional cross-sectional view of the water inlet bayonet of the present invention.

[0025] In the figure: water inlet bayonet 1, water inlet pipe 101, connecting plate 102, nut assembly 103, through groove 104, block 105, slot 106, rubber sealing strip 107, fixing plate 108, connecting plate 2 109, threaded sleeve 110, connecting ring 111, left water outlet bayonet 2, right water outlet bayonet 3, liquid cooling integrated board 4, upper cooling end plate 401, left main board 402, lower cooling end plate 403, main board 404, right main board 405, water inlet cavity 406, water channel 407, water exchange cavity 1 408, water exchange cavity 2 409, drainage plate 410, partition 411, water exchange cavity 3 412, water outlet cavity 413, water flow direction 414, main board drainage plate 415, main board water channel 416, water inlet 417, water outlet 2 418, water distribution plate 419. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5The present invention provides a technical solution: the modular liquid cooling plate comprises a water inlet pipe 101, and a water inlet bayonet 1 is installed outside the water inlet pipe 101. By installing the water inlet bayonet 1, the purpose of sealing the coolant in the liquid cooling integrated plate 4 can be achieved, thereby reducing safety hazards, further reducing the occurrence of the need for later maintenance, further reducing the workload and maintenance costs of the enterprise, and making maintenance more convenient. A liquid cooling integrated board 4 is installed below the water inlet pipe 101; the liquid cooling integrated board 4 includes an upper cooling end plate 401, a main board 404 is fixedly installed on the front end surface of the upper cooling end plate 401, a right water outlet bayonet 3 is fixedly installed on the top of the upper cooling end plate 401, a left main board 402 and a right main board 405 are fixedly installed on the left and right end surfaces of the main board 404, a lower cooling end plate 403 is fixedly installed on the left main board 402, the right main board 405 and the front front end of the main board 404, a main board drainage plate 415 and a main board water channel 416 are fixedly installed between the top and bottom surfaces of the main board 404, and three holes are fixedly opened on the front end of the top of the upper cooling end plate 401. A water inlet cavity 406 is provided on the top surface of the main board 404, a water dividing plate 419 is fixedly installed in the middle of the water inlet cavity 406, water channels 407 are respectively provided on both sides of the bottom of the water dividing plate 419, a partition 411 is fixedly installed in the water channel 407, the partition 411 divides the water channel 407 into three small water channels, and a water exchange cavity 408 is provided on the bottom surface of the water channel 407. By installing the water exchange cavity, the coolant entering the liquid-cooled integrated board 4 can exchange hot and cold coolant, thereby realizing the first water temperature uniformity operation in the water exchange cavity, thereby making the cooling effect better and improving the working efficiency of the device. A water distribution plate 419 is installed at the left end of the water exchange chamber 1 408, a water exchange chamber 2 409 is opened inside the cooling end plate 401 at the upper end of the water channel 407, a water outlet chamber 413 is opened on the water exchange chamber 2 409, and a water exchange chamber 3 412 is opened at the bottom of the water exchange chamber 2. By installing the water channel 407, the guide plate 410 and the partition 411, the situation that the water flows out from the water outlet as soon as it enters will not occur, and the purpose of controlling the flow direction of the coolant can be achieved, making the cooling more balanced, making the work process clearer and eliminating safety hazards. There are two vertically installed partitions 411 inside the water channel 407 to divide the original water channel 407 into three new water channels 407 of equal size. A number of drainage plates 410 are vertically fixedly installed inside the left main board 402. The drainage plates 410 are installed at equal distances. By installing the liquid cooling integrated plate 4, the purpose of modular combination of cooling plates can be achieved, which reduces R&D costs and time costs, reduces more costs for the enterprise, improves work efficiency and reduces the total amount of work.A water inlet 417 is installed in the middle of the upper cooling end plate 401, a connecting ring 111 is fixedly installed on the inner wall of the water inlet 417, a threaded sleeve 110 is fixedly installed on the top surface of the connecting ring 111, a water inlet pipe 101 is threadedly installed on the inner wall of the threaded sleeve, a connecting plate 102 is fixedly installed in the middle of the side of the water inlet pipe 101, a through groove 104 is opened through the outer circle of the connecting plate 102, a nut assembly 103 is slidably installed in the through groove 104, a clamping block 105 is fixedly installed on the bottom surface of the connecting plate 102, a connecting plate 2 109 is fixedly installed on the bottom end of the outer surface of the threaded sleeve 110, and the outer side of the connecting plate 2 109 A through slot 104 is provided through the top and bottom. The upper cooling end plate 401 in the liquid cooling integrated board 4 is connected to the left main board 402, the lower cooling end plate 403, the main board 404 and the right main board 405 by welding. The water channels 407 in the left main board 402 and the right main board 405 are installed symmetrically. The water flow direction in the water channel 407 is from the middle to the sides in the bottom, up, down and up directions, forming an overall S shape. Three holes are fixedly provided at the front end of the top of the upper cooling end plate 401, which are the left water outlet, the water inlet 417 and the second water outlet 418 from left to right. The left water outlet bayonet 2 is correspondingly installed on the side of the top of the left water outlet. By installing different main boards, the purpose of cooling different battery modules can be achieved, which improves the applicability and work efficiency of the device.

[0028] When in use, first cut the cavity profile of the liquid-cooled integrated plate 4 into the corresponding shape as needed, weld one or more liquid-cooled integrated plates 4 into a whole by stir friction welding, then weld the end plate of the liquid-cooled integrated plate 4 and the main body of the liquid-cooled integrated plate 4 together by stir friction welding, and finally weld the water pipe joint and the liquid-cooled plate together by arc welding. For battery packs of regular shapes, only the length and width of the liquid-cooled plate need to be changed to achieve compatibility with the liquid-cooled integrated plate 4; for liquid-cooled integrated plates 4 of irregular shapes, in addition to welding the main body of the liquid-cooled plate, CNC processing is also required to adapt to different battery pack shapes. The modular liquid-cooled plate solution, that is, by decomposing the liquid-cooled plate into three parts: the main aluminum profile of the liquid-cooled plate, the end plate of the liquid-cooled plate, and the water pipe joint, the compatible design of liquid-cooled plates for battery packs of different models can be achieved only through welding and CNC processes. This design can achieve modularization in the design, manufacture and use of liquid-cooled plates. When in use, align the water inlet bayonet 1 with the water inlet pipe 101, rotate the water inlet pipe 101, and thread the threaded sleeve fixed on the connecting ring 111 through the thread installed on the side of the water inlet pipe 101. At this time, the block 105 installed on the bottom of the connecting plate 102 moves downward and is clamped into the clamping groove 106 opened on the rubber sealing strip 107. After clamping, the nut assembly is extended from the through groove 104 and tightened to fix it. The coolant is injected from the water inlet pipe and enters the water inlet cavity 406 through the water inlet. The coolant is continuously injected, and the coolant moves downward, moves downward through the guide plate 410 that divides the water channel 407 into several parts, enters the water exchange cavity 1 408, further moves upward into the water exchange cavity 2 409, and then moves downward into the water exchange cavity 3 412, and finally moves upward along the water channel 407, enters the water outlet cavity 413 and is discharged from the left water outlet, completing a cycle to achieve a cooling effect.

[0029] The beneficial effects of the present invention are:

[0030] By installing the liquid-cooled integrated board 4, the purpose of modularizing the cooling board can be achieved, the R&D cost and time cost can be reduced, more costs can be reduced for the enterprise, work efficiency can be improved and the total amount of work can be reduced. By installing the water inlet bayonet 1, the purpose of sealing the coolant in the liquid-cooled integrated board 4 can be achieved, safety hazards can be reduced, the occurrence of the need for maintenance in the later stage can be further reduced, the workload and maintenance cost of the enterprise can be further reduced, and maintenance can be made more convenient. By installing the water exchange cavity, the coolant entering the liquid-cooled integrated board 4 can be exchanged with hot and cold coolants, and then the first water temperature uniformity operation can be achieved in the water exchange cavity, so that the cooling effect is better and the work efficiency of the device is improved. By installing the water channel 407, the guide plate 410 and the partition 411, there will be no situation where the water flow flows out from the water outlet as soon as it enters, and the purpose of controlling the flow direction of the coolant can be achieved, so that the cooling is more balanced, the work process is clearer and safety hazards are eliminated. By installing different motherboards, the purpose of cooling different battery modules can be achieved, and the applicability and work efficiency of the device are improved. For battery packs that use a liquid cooling system, the liquid cooling plate has better structural heat dissipation effect and temperature equalization ability. At the same time, the liquid cooling plate has a relatively regular structure and can be arranged as a supporting structure under the battery module. During the battery pack upgrade process, the use of a liquid cooling plate is more flexible. The heat dissipation capacity of the liquid cooling plate depends on the amount of heat that the coolant can take away per unit time of the liquid cooling plate, that is, the flow rate of the coolant passing through the liquid cooling plate per unit time. Flow rate = flow rate × pipe cross-sectional area. The best liquid flow rate in the internal flow channel of the liquid cooling plate is 2~2.5m / s. If the flow rate is too fast, the flow resistance will be too large. If the flow rate is too slow, the pipe material will be wasted. Therefore, when performing modular design, the optimal size of the cooling plate flow channel can be determined by calculation. The main structure of the modular liquid cooling plate consists of the following parts, as follows Figure 1 As shown. The aluminum profile with multiple equal-section cavities is extruded from AL6082 aluminum alloy and serves as the cooling body of the modular liquid cooling plate. The end plates at both ends of the modular liquid cooling plate are formed from AL6082 aluminum alloy by CNC, serving as the seal of the water channel of the modular liquid cooling plate, while controlling the flow direction and cross-sectional size of the cooling water channel. The water pipe joint of the modular liquid cooling plate is die-cast from AL6082 aluminum alloy and serves as the water inlet and outlet of the modular liquid cooling plate. The length of the main aluminum profile of the modular liquid cooling plate can be adjusted to be compatible with 500mm-2000mm. The width direction can be compatible with 400mm-1600mm by connecting multiple cavity aluminum profiles in parallel and welding them into a whole through stir friction welding. For liquid cooling plates with heterogeneous structures, the main body of the liquid cooling plate can be cut by CNC, and the series connection of the liquid cooling plates can be achieved by adjusting the structure of the end plates of the liquid cooling plate.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular liquid cooling plate, comprising a water inlet pipe (101), characterized in that: A water inlet bayonet (1) is installed outside the water inlet pipe (101), and a liquid cooling integrated plate (4) is installed below the water inlet pipe (101); The liquid cooling integrated plate (4) comprises an upper cooling end plate (401), a main board (404) is fixedly mounted on the front end surface of the upper cooling end plate (401), a right water outlet bayonet (3) is fixedly mounted on the top end of the upper cooling end plate (401), a left main board (402) and a right main board (405) are fixedly mounted on the left and right end surfaces of the main board (404), a lower cooling end plate (403) is fixedly mounted on the front end of the left main board (402), the right main board (405) and the main board (404), a main board drainage plate (415) and a main board water channel (416) are fixedly mounted between the top and bottom surfaces of the main board (404), three holes are fixedly opened on the front end of the top of the upper cooling end plate (401), and a water inlet cavity (403) is opened on the top surface of the main board (404). 6) A water divider plate (419) is fixedly installed in the middle of the water inlet cavity (406), water channels (407) are respectively provided on both sides of the bottom end of the water divider plate (419), a partition plate (411) is fixedly installed in the water channel (407), and the partition plate (411) divides the water channel (407) into three small water channels, a water exchange cavity (408) is provided on the bottom surface of the water channel (407), a water divider plate (419) is installed at the left end of the water exchange cavity (408), a water exchange cavity (409) is provided inside the upper cooling end plate (401) at the upper end of the water channel (407), a water outlet cavity (413) is provided on the upper surface of the water exchange cavity (409), and a water exchange cavity (412) is provided at the bottom of the water exchange cavity (407); A water inlet (417) is installed in the middle of the upper cooling end plate (401), a connecting ring (111) is fixedly installed on the inner wall of the water inlet (417), a threaded sleeve (110) is fixedly installed on the top surface of the connecting ring (111), a water inlet pipe (101) is threadedly installed on the inner wall of the threaded sleeve, a connecting plate (102) is fixedly installed in the middle of the side of the water inlet pipe (101), a through groove (104) is opened through the outer ring of the connecting plate (102) from top to bottom, a nut assembly (103) is slidably installed in the through groove (104), and a clamping block (105) is fixedly installed on the bottom surface of the connecting plate (102).

2. The modular liquid cooling plate according to claim 1, characterized in that: Two vertically installed partitions (411) are respectively arranged inside the water channel (407) to divide the original water channel (407) into three new secondary water channels of equal size. A plurality of guide plates (410) are vertically fixedly installed inside the left main board (402), and the guide plates (410) are installed at equal distances.

3. The modular liquid cooling plate according to claim 1, characterized in that: A second connecting plate (109) is fixedly mounted on the bottom end of the outer surface of the threaded sleeve (110), and a through groove (104) is formed on the outer side of the second connecting plate (109) from top to bottom.

4. The modular liquid cooling plate according to claim 3, characterized in that: A rubber sealing strip (107) is fixedly mounted on the top surface of the second connecting plate (109), a card slot (106) is provided on the top surface of the rubber sealing strip (107), the card slot (106) is matched with the card block (105), and a fixing plate (108) is fixedly mounted on the outer ring of the top surface of the second connecting plate, the fixing plate (108) and the rubber sealing strip (107) are at the same height.

5. The modular liquid cooling plate according to claim 3, characterized in that: The through slots (104) formed on the outer rings of the connecting plate (102) and the second connecting plate (109) are formed correspondingly, and the nut assembly (103) connects the upper and lower groups of through slots (104). The number of the nut assemblies (103) is six.

6. The modular liquid cooling plate according to claim 1, characterized in that: The upper cooling end plate (401) in the liquid-cooling integrated plate (4) is connected to the left main plate (402), the lower cooling end plate (403), the main plate (404) and the right main plate (405) by welding, and the water channels (407) in the left main plate (402) and the right main plate (405) are symmetrically installed.

7. The modular liquid cooling plate according to claim 1, characterized in that: The direction of water flow in the water channel (407) is from the middle to both sides in the bottom-up-up-up direction, forming an S-shape as a whole. Three holes are fixedly opened at the front end of the top surface of the upper cooling end plate (401), which are respectively a left water outlet, a water inlet (417) and a second water outlet (418) from left to right. A left water outlet clip (2) is correspondingly installed on the side surface at the top end of the left water outlet.

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