Liquid cooling plate assembly, box body and battery pack

Abstract

The embodiment of the utility model provides a liquid cooling plate assembly, a box body and a battery pack, the liquid cooling plate assembly comprises a first liquid cooling plate, a second liquid cooling plate and a plugging block, the first liquid cooling plate is provided with a first liquid cooling flow channel and a first opening, and the second liquid cooling plate is provided with a second liquid cooling flow channel and a second opening. A third liquid cooling flow channel communicated with the first opening and the second opening is arranged among the plugging block, the first side plate and the second side plate or in the plugging block, cooling liquid can flow between the first liquid cooling flow channel and the second liquid cooling flow channel through the third liquid cooling flow channel, and the cooling liquid cannot flow out when flowing between different liquid cooling plates. Therefore, the safety of the battery pack is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to liquid cooling plate assemblies, housings, and battery packs. Background Technology

[0002] Batteries generate a significant amount of heat during charging and discharging. Excessive temperatures can negatively impact battery performance and lifespan, and may even trigger safety issues such as thermal runaway. Related technologies employ the addition of liquid-cooled surfaces for heat dissipation. This method not only improves cooling efficiency but also distributes the cooling effect more evenly, preventing heat concentration in any one area. However, the flow channels for multi-faceted liquid cooling need to be interconnected to allow for coolant circulation, and coolant leakage may occur during the installation of the liquid cooling plates. Utility Model Content

[0003] Embodiments of this application provide a liquid cooling plate assembly, housing, and battery pack that can improve the technical problem of coolant leakage when the flow channels of multi-faceted liquid cooling are interconnected.

[0004] A first liquid cooling plate, wherein a first liquid cooling channel is provided in the first liquid cooling plate, the first liquid cooling plate includes a first sidewall, the first sidewall has a first opening, and the first opening communicates with the first liquid cooling channel.

[0005] A second liquid cooling plate is connected to the first liquid cooling plate. The second liquid cooling plate has a second liquid cooling channel inside. The second liquid cooling plate includes a second sidewall connected to the first sidewall. The second sidewall has a second opening that communicates with the second liquid cooling channel.

[0006] A sealing block is disposed on the first opening and the second opening. A third liquid cooling channel is formed between the sealing block, the first liquid cooling plate and the second liquid cooling plate, connecting the first opening and the second opening. The sealing block is sealed to the first side wall and the second side wall.

[0007] In some embodiments, the sealing block includes a first plate and a second plate that are bent and connected together. The first plate covers the first opening and is sealed to a first sidewall, and the second plate covers the second opening and is sealed to a second sidewall.

[0008] In some embodiments, the first plate includes a first sidewall near the second plate, the first opening includes a first sub-opening and a second sub-opening, the first sub-opening penetrates the first sidewall and communicates with the first liquid cooling channel, and the first sidewall is recessed on one side facing the second plate to form the second sub-opening.

[0009] The second plate includes a second sidewall near the first plate, and the second opening penetrates the second sidewall;

[0010] The first sub-opening extends to the second sidewall, and the second opening extends to the first sidewall and is connected to the second sub-opening.

[0011] In some embodiments, the blocking block further includes a first limiting segment and a second limiting segment, the first limiting segment protruding from the first plate and the second limiting segment protruding from the second plate, the first limiting segment being sealed to the first peripheral wall forming the first opening and the second limiting segment being sealed to the second peripheral wall forming the second opening.

[0012] In some embodiments, the blocking block further includes a third limiting segment and a fourth limiting segment. The third limiting segment protrudes from the first plate, and the fourth limiting segment protrudes from the second plate. The two ends of the third limiting segment are respectively connected to the two ends of the fourth limiting segment to form a surrounding ring. The surrounding ring surrounds the first opening and the second opening. The first limiting segment is sealed to the first plate, and the second limiting segment is sealed to the second plate.

[0013] In some embodiments, the first plate includes a first sidewall near the second plate, and the first opening penetrates the first sidewall and communicates with the first liquid cooling channel.

[0014] The second plate includes a second sidewall near the first plate, and the second opening penetrates the second sidewall;

[0015] The first plate is provided with a first groove facing the first sidewall, and the third liquid cooling channel is formed in the first groove. The first groove connects the first opening and the second opening.

[0016] In some embodiments, the second plate is provided with a second groove facing the second sidewall, the second groove connecting the first groove and the second opening, and the third liquid cooling channel is formed in the first groove and the second groove.

[0017] In some embodiments, the first liquid cooling plate is provided with a plurality of spaced-apart openings;

[0018] The second liquid cooling plate is provided with a plurality of second openings spaced apart, and the plurality of second openings are provided in a one-to-one correspondence with the plurality of first openings;

[0019] There are multiple sealing blocks, and each sealing block is covered with one first opening and one second opening.

[0020] Embodiments of this application also provide a liquid-cooled plate assembly, the liquid-cooled plate assembly comprising:

[0021] A first liquid cooling plate, wherein a first liquid cooling channel is provided in the first liquid cooling plate, the first liquid cooling plate includes a first sidewall, the first sidewall has a first opening, and the first opening communicates with the first liquid cooling channel.

[0022] A second liquid cooling plate is connected to the first liquid cooling plate. The second liquid cooling plate is provided with a second liquid cooling channel. The second liquid cooling plate includes a second sidewall connected to the first sidewall. The second sidewall is provided with a second opening. The second opening communicates with the second liquid cooling channel.

[0023] A sealing block is provided on the first opening and the second opening, or the inner cavity of the sealing block is provided with a third liquid cooling channel connecting the first opening and the second opening, and the sealing block is sealed to the first side wall and the second side wall.

[0024] This application also provides a housing, including:

[0025] As described above, the housing includes two liquid cooling plate assemblies, which are arranged opposite to each other.

[0026] The third liquid cooling plate is disposed between the two second liquid cooling plates, and each third liquid cooling plate is connected to one of the second liquid cooling plates.

[0027] In some embodiments, the housing further includes a fourth liquid cooling plate disposed opposite to the liquid cooling base plate, and a front panel connected between the fourth liquid cooling plate and the liquid cooling base plate;

[0028] The housing also includes a liquid cooling pipe, which includes a first liquid cooling section, a connecting section, and a second liquid cooling section connected in sequence. The first liquid cooling section extends along a first direction and connects to and communicates with the fourth liquid cooling plate. The second liquid cooling section extends along a second direction and connects to the second liquid cooling plate. The first and second directions intersect. The connecting section is bent and connected between the first and second liquid cooling sections.

[0029] In some embodiments, the housing further includes two liquid cooling connectors and two liquid cooling pipes, each liquid cooling pipe corresponding to one liquid cooling connector, one liquid cooling pipe for inputting coolant and the other liquid cooling pipe for outputting coolant.

[0030] Thirdly, this application also provides a battery pack, including

[0031] As described above, the two liquid cooling components and the third liquid cooling plate form an accommodating space in the enclosure.

[0032] A battery module, wherein the battery module is disposed within the accommodating space.

[0033] The beneficial effects of the embodiments of this application are as follows:

[0034] This application provides a liquid cooling plate assembly, a housing, and a battery pack. The liquid cooling plate assembly includes a first liquid cooling plate, a second liquid cooling plate, and a sealing block. The first liquid cooling plate has a first liquid cooling channel and a first opening, and the second liquid cooling plate has a second liquid cooling channel and a second opening. By providing the sealing block, a third liquid cooling channel is provided between the sealing block, the first liquid cooling plate, and the second liquid cooling plate, or within the sealing block, connecting the first opening and the second opening. Coolant can flow through the third liquid cooling channel between the first liquid cooling channel and the second liquid cooling channel. When flowing between different liquid cooling plates, the coolant will not flow into the battery housing space, thereby improving the safety of the battery pack. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of the liquid cooling plate assembly provided in an embodiment of this application;

[0037] Figure 2 yes Figure 1 The liquid cooling plate assembly shown is a top view.

[0038] Figure 3 yes Figure 2 A cross-sectional view of the liquid cooling plate assembly shown;

[0039] Figure 4 yes Figure 3 An enlarged schematic diagram of part A shown;

[0040] Figure 5 yes Figure 1 An exploded view of the liquid cooling plate assembly shown.

[0041] Figure 6 yes Figure 5 An enlarged schematic diagram of part B shown;

[0042] Figure 7 yes Figure 6 The diagram shows the structure of the sealing block. Figure 1 ;

[0043] Figure 8 yes Figure 6 The diagram shows the structure of the sealing block. Figure 2 ;

[0044] Figure 9 yes Figure 1 The diagram shows the structure of the liquid cooling plate assembly.

[0045] Figure 10 yes Figure 9 An enlarged schematic diagram of part C shown;

[0046] Figure 11 This is a top view of the housing provided in the embodiment of this application;

[0047] Figure 12 This is a schematic diagram of the battery pack structure provided in the embodiments of this application;

[0048] Figure 13 yes Figure 12 The exploded view of the battery pack shown.

[0049] Figure label:

[0050] 1000, Liquid-cooled plate assembly;

[0051] 10. First liquid cooling plate; 101. First liquid cooling channel; 11. First sidewall; 110. First opening; 1100. First peripheral wall; 1101. First sub-opening; 1102. Second sub-opening;

[0052] 20. Second liquid cooling plate; 201. Second liquid cooling channel; 21. Second sidewall; 210. Second opening; 2100. Second peripheral wall;

[0053] 30. Blocking block; 301. Third liquid cooling channel; 31. First plate; 32. Second plate; 33. First limiting section; 34. Second limiting section; 35. Third limiting section; 36. Fourth limiting section;

[0054] 2000, Enclosure; 2001, Accommodation Space; 2002, Liquid Cooling Connector; 2003, Third Liquid Cooling Plate; 2004, Fourth Liquid Cooling Plate; 2005, Front Panel; 2006, Liquid Cooling Pipe; 20061, First Liquid Cooling Section; 20062, Connecting Section; 20063, Second Liquid Cooling Section;

[0055] 3000, Battery Pack; 3001, Battery Module. Detailed Implementation

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0057] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a liquid cooling plate assembly 1000 provided in an embodiment of this application. This application provides a liquid cooling plate assembly 1000, which includes a first liquid cooling plate 10 and a second liquid cooling plate 20. The first liquid cooling plate 10 has a first liquid cooling channel 101 and includes a first sidewall 11 with a first opening 110 communicating with the first liquid cooling channel 101. The second liquid cooling plate 20 is connected to the first liquid cooling plate 10 and is arranged at an angle to the first liquid cooling plate 10. The second liquid cooling plate 20 has a second liquid cooling channel 201 and includes a second sidewall 21 connected to the first sidewall 11. The second sidewall 21 has a second opening 210 communicating with the first opening 110 and the second liquid cooling channel 201.

[0058] Please refer to Figures 2-4 , Figure 2 yes Figure 1 The liquid cooling plate assembly 1000 shown is a top view. Figure 3 yes Figure 2 The cross-sectional view of the liquid cooling plate assembly 1000 shown is shown. Figure 4 yes Figure 3 The diagram shows an enlarged view of part A. The battery pack 3000 assembly also includes a sealing block 30, which covers the first opening 110 and the second opening 210. The sealing block 30, the first liquid cooling plate 10, and the second liquid cooling plate 20 form a third liquid cooling channel 301 connecting the first opening 110 and the second opening 210. The sealing block 30 is sealed to the first side wall 11 and the second side wall 21. Alternatively, the sealing block 30 covers the first opening 110 and the second opening 210, and the inner cavity of the sealing block 30 has a third liquid cooling channel 301 connecting the first opening 110 and the second opening 210. The sealing block 30 is sealed to the first side wall 11 and the second side wall 21.

[0059] In related technologies, the battery pack 3000 uses an additional liquid-cooled surface for heat dissipation. This method can prevent heat from concentrating in one area. However, the flow channels of the multi-faceted liquid-cooled plates need to be interconnected to allow coolant circulation, and coolant leakage may occur during the installation of the liquid-cooled plates.

[0060] The liquid cooling plate assembly 1000 provided in this application has a first liquid cooling plate 10 with a first liquid cooling channel 101 and a first opening 110, and a second liquid cooling plate 20 with a second liquid cooling channel 201 and a second opening 210. By setting a sealing block 30, the sealing block 30, the first liquid cooling plate 10 and the second liquid cooling plate 20, or the inner cavity of the sealing block 30 is provided with a third liquid cooling channel 301 that connects the first opening 110 and the second opening 210. The coolant can flow between the first liquid cooling channel 101 and the second liquid cooling channel 201 through the third liquid cooling channel 301. When flowing between different liquid cooling plates, the coolant will not flow into the housing space of the battery module, thereby improving the safety of the battery pack.

[0061] The second liquid cooling plate 20 forms an angle with the first liquid cooling plate 10. The angle can be 30°, 45°, 60°, 90°, etc. In this application, the first liquid cooling plate 10 and the second liquid cooling plate 20 form a 90° angle.

[0062] Please refer to Figures 5-6 , Figure 5 yes Figure 1 The exploded view of the liquid cooling plate assembly shown. Figure 6 yes Figure 5 The enlarged schematic diagram of part B is shown. In some embodiments, the sealing block 30 includes a first plate 31 and a second plate 32 that are bent and connected. The first plate 31 covers the first opening 110 and is sealed to the first sidewall 11. The second plate 32 covers the second opening 210 and is sealed to the second sidewall 21.

[0063] It is understandable that the area of ​​the first plate 31 is larger than the opening size of the first opening 110, and the area of ​​the second plate 32 is larger than the opening size of the second opening 210. The first plate 31 completely covers the first opening 110, and the second plate 32 completely covers the second opening 210.

[0064] In some examples, the side of the first plate 31 facing the first sidewall 11 is sealed to the first sidewall, and the side of the second plate 32 facing the second sidewall 21 is sealed to the second sidewall 21.

[0065] In some embodiments, the first plate 31 includes a first sidewall 11 near the second plate 32, and the first opening 110 includes a first sub-opening 1101 and a second sub-opening 1102. The first sub-opening 1101 penetrates the first sidewall 11 and communicates with the first liquid cooling channel 101. The first sidewall 11 is recessed on the side facing the second plate 32 to form the second sub-opening 1102. The second plate 32 includes a second sidewall 21 near the first plate 31, and the second opening 210 penetrates the second sidewall 21. The second sub-opening 1102 extends to the second sidewall 21, and the second opening 210 extends to the first sidewall 11 and connects with the second sub-opening 1102.

[0066] Specifically, the first sub-opening 1101 connects to one end of the third liquid cooling channel 301, the second sub-opening 1102 connects to the other end of the third liquid cooling channel 301, and the second opening 210 penetrates the second sidewall 21 and connects with the extended second sub-opening 1102. That is, coolant flows out from the first sub-opening 1101, enters the second sub-opening 1102 through the third liquid cooling channel 301, and then enters the second liquid cooling channel 201 through the second opening 210. Similarly, coolant can enter the second sub-opening 1102 from the second liquid cooling channel 201 through the second opening 210, and then enter the first liquid cooling channel 101 from the first sub-opening 1101.

[0067] Please refer to the image. Figures 7-8 , Figure 7 yes Figure 6 Schematic diagram of the sealing block 30 shown Figure 1 , Figure 8 yes Figure 6 Schematic diagram of the sealing block 30 shown Figure 2 In some embodiments, the sealing block 30 further includes a first limiting segment 33 and a second limiting segment 34, the first limiting segment 33 protruding from the first plate 31, the second limiting segment 34 protruding from the second plate 32, the first limiting segment 33 being sealed to the first peripheral wall 1100 forming the first opening 110, and the second limiting segment 34 being sealed to the second peripheral wall 2100 forming the second opening 210.

[0068] Specifically, when the first plate 31 is installed on the first liquid cooling plate 10, the first limiting segment 33 is located within the first opening 110, and the first plate 31 is connected to the first peripheral wall 1100 through the first limiting segment 33. When the second plate 32 is installed on the second liquid cooling plate 20, the second limiting segment 34 is located within the second opening 210, and the second plate 32 is connected to the second peripheral wall 2100 through the second limiting segment 34. The first limiting segment 33 and the second limiting segment 34 can restrict the position of the sealing block 30 and prevent the sealing block 30 from moving.

[0069] In some examples, the first plate 31 can be connected to the first peripheral wall 1100 by means of bonding, welding, etc., and the second plate 32 can be connected to the second peripheral wall 2100 by means of bonding, welding, etc.

[0070] In some embodiments, the sealing block 30 further includes a third limiting segment 35 and a fourth limiting segment 36. The third limiting segment 35 protrudes from the first plate 31, and the fourth limiting segment 36 protrudes from the second plate 32. The two ends of the third limiting segment 35 are respectively connected to the two ends of the fourth limiting segment 36 to form a surrounding ring. The surrounding ring surrounds the first opening 110 and the second opening 210. The first limiting segment 33 is sealed to the first plate 31, and the second limiting segment 34 is sealed to the second plate 32.

[0071] Specifically, the first plate 31 and the first liquid cooling plate 10 are spaced apart, the second plate 32 and the second liquid cooling plate 20 are spaced apart, and the first limiting segment 33, the second limiting segment 34, the third limiting segment 35 and the fourth limiting segment 36 form a surrounding ring. The first plate 31, the surrounding ring and the first liquid cooling plate 10 form a third liquid cooling flow channel 301. The surrounding ring can restrict the flow direction of the coolant and guide the coolant to flow from the first opening 110 to the second opening 210, or from the second opening 210 to the first opening 110.

[0072] Please refer to Figures 9-10 , Figure 9 yes Figure 1 The schematic diagram of the liquid cooling plate assembly 1000 shown is as follows. Figure 10 yes Figure 9 The diagram shows an enlarged view of part C. In some embodiments, the first plate 31 includes a first sidewall 11 near the second plate 32, the first opening 110 penetrates the first sidewall 11 and communicates with the first liquid cooling channel 101, the second plate 32 includes a second sidewall 21 near the first plate 31, the second opening 210 penetrates the second sidewall 21, the first plate 31 is provided with a first groove facing the first sidewall 11, the third liquid cooling channel 301 is formed in the first groove, and the first groove communicates with the first opening 110 and the second opening 210.

[0073] Specifically, the first opening 110 may not extend to the second sidewall 21. A third liquid cooling channel 301 is provided in the first groove, and the first opening 110 and the second opening 210 are connected through the third liquid cooling channel 301 in the first groove. That is, coolant flows out from the first opening 110, enters the second opening 210 along the third liquid cooling channel 301, and then enters the second liquid cooling channel 201 from the second opening 210. Similarly, coolant can also enter the first liquid cooling channel 101 from the second liquid cooling channel 201 along the third liquid cooling channel 301 formed by the first groove.

[0074] In some embodiments, the second plate 32 is provided with a second groove facing the second sidewall 21, the second groove connecting the first groove and the second opening 210, and the third liquid cooling channel 301 is formed in the first groove and the second groove.

[0075] Specifically, a second groove can also be provided within the second plate 32, connecting to the first groove. Since the first plate 31 and the second plate 32 have different directions, the second groove and the first groove extend in different directions. The first groove and the second groove form a third liquid cooling channel 301, allowing coolant to flow out from the first opening 110, flow along the third liquid cooling channel 301 formed by the first groove, then change direction and enter the third liquid cooling channel 301 formed by the second groove, then enter the second opening 210, and then enter the second liquid cooling channel 201 from the second opening 210. Similarly, coolant can also enter the first liquid cooling channel 101 from the second liquid cooling channel 201 along the third liquid cooling channel 301 formed by the first groove and the second groove.

[0076] In some embodiments, the first plate 31 and the second plate 32 are integrally molded structures. This integral molding structure eliminates the need for independent manufacturing of each part and subsequent assembly steps, reducing the number of components in the sealing block 30 and simplifying the assembly process. Furthermore, the integral molding connection provides higher structural strength and rigidity.

[0077] In some embodiments, the first liquid cooling plate 10 is provided with a plurality of spaced-apart first openings 110, and the second liquid cooling plate 20 is provided with a plurality of spaced-apart second openings 210. The plurality of second openings 210 are provided in a one-to-one correspondence with the plurality of first openings 110. There are a plurality of sealing blocks 30, and each sealing block 30 is provided to cover one first opening 110 and one second opening 210.

[0078] Understandably, by setting multiple first openings 110 and second openings 210 at intervals, the communication area between the first liquid cooling plate 10 and the second liquid cooling plate 20 can be increased, allowing more coolant to flow between the first liquid cooling plate 10 and the second liquid cooling plate 20.

[0079] Please refer to Figures 11-12 , Figure 11 This is a top view of the box provided in the embodiment of this application. Figure 12This is a schematic diagram of the battery pack structure provided in an embodiment of this application. This application provides a housing 2000, which includes two liquid-cooled plate assemblies 1000 arranged opposite to each other. The housing 2000 also includes a third liquid-cooled plate 2003, which is disposed between two second liquid-cooled plates 20, and each third liquid-cooled plate 2003 is connected to one of the second liquid-cooled plates 20.

[0080] In some examples, the third liquid cooling plate 2003 is provided with a liquid cooling channel, and the second liquid cooling plate 20 is provided with a first communicating hole with the liquid cooling channel on the side facing the third liquid cooling plate 2003. The third liquid cooling plate 2003 is provided with a second communicating hole at both ends, which communicates with the second liquid cooling flow channel 201. The first communicating hole and the two second communicating holes are connected one-to-one, so that the second liquid cooling flow channels 201 of the two second liquid cooling plates 20 are respectively connected with the liquid cooling channel.

[0081] In some embodiments, the housing 2000 further includes a fourth liquid cooling plate 2004 disposed opposite to the third liquid cooling plate 2003 and the two second liquid cooling plates 20, and a front panel 2005 connected between the fourth liquid cooling plate 2004 and the liquid cooling base plate. The housing 2000 also includes a liquid cooling pipe 2006, which includes a first liquid cooling section 20061, a connecting section 20062, and a second liquid cooling section 20063 connected in sequence. The first liquid cooling section 20061 extends along a first direction and connects to and communicates with the first liquid cooling plate 10. The second liquid cooling section 20063 extends along a second direction and connects to the second liquid cooling plate 20. The first direction and the second direction intersect. The connecting section 20062 is bent and connected between the first liquid cooling section 20061 and the second liquid cooling section 20063.

[0082] Specifically, the second liquid cooling section 20063 extends outward relative to the first liquid cooling section 20061 to facilitate connection with an external liquid cooling pipe. The first direction can be parallel to the height direction of the front panel 2005, and the second direction can be parallel to the length direction of the front panel 2005.

[0083] Understandably, the coolant enters the liquid cooling pipe 2006 from the outside, and part of the coolant enters the first liquid cooling plate 10 and the third liquid cooling plate 2003 through the second liquid cooling plate 20, and flows between the first liquid cooling plate 10, the second liquid cooling plate 20 and the third liquid cooling plate 2003. Part of the coolant enters the fourth liquid cooling plate 2004 through the liquid cooling pipe 2006. Compared with traditional air cooling and single-sided liquid cooling, the multi-sided liquid cooling of this application provides more balanced and efficient heat dissipation performance, and is especially suitable for high power density and high current battery applications, such as electric vehicles and high power energy storage systems.

[0084] In some embodiments, the housing 2000 further includes two liquid cooling connectors 2002 and two liquid cooling pipes 2006, each liquid cooling pipe 2006 being provided with one liquid cooling connector 2002, one liquid cooling pipe 2006 being used for inputting coolant, and the other liquid cooling pipe 2006 being used for outputting coolant.

[0085] Understandably, placing the liquid cooling pipe 2006 outside the front panel 2005 can prevent the liquid cooling pipe 2006 and liquid cooling connector 2002 from occupying the internal space of the battery box 2000, thus expanding the internal space of the battery box 2000. At the same time, even if a leak occurs at the first liquid cooling connector 2002 or the second liquid cooling connector 2002, the coolant will not enter the interior of the battery box 2000, thereby improving battery safety.

[0086] Please combine Figure 11 refer to Figure 13 , Figure 13 yes Figure 12 The exploded view of the battery pack is shown. This application also provides a battery pack 3000, which includes the aforementioned housing 2000 and battery module 3001. Two liquid cooling plate assemblies 1000 and the third liquid cooling plate 2003 form an accommodating space 2001, and the battery module 3001 is disposed within the accommodating space 2001.

[0087] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A liquid-cooled plate assembly, characterized in that, include: A first liquid cooling plate, wherein a first liquid cooling channel is provided in the first liquid cooling plate, the first liquid cooling plate includes a first sidewall, the first sidewall has a first opening, and the first opening communicates with the first liquid cooling channel. A second liquid cooling plate is connected to the first liquid cooling plate. The second liquid cooling plate has a second liquid cooling channel inside it. The second liquid cooling plate includes a second sidewall that is connected to the first sidewall. The second sidewall has a second opening that communicates with the second liquid cooling channel. A sealing block is disposed on the first opening and the second opening. The sealing block, the first liquid cooling plate, and the second liquid cooling plate form a third liquid cooling channel connecting the first opening and the second opening. The sealing block is sealed to the first side wall and the second side wall.

2. The liquid-cooled plate assembly according to claim 1, characterized in that, The sealing block includes a first plate and a second plate that are bent and connected. The first plate covers the first opening and is sealed to the first side wall, and the second plate covers the second opening and is sealed to the second side wall.

3. The liquid-cooled plate assembly according to claim 2, characterized in that, The first plate includes a first sidewall near the second plate, and the first opening includes a first sub-opening and a second sub-opening. The first sub-opening penetrates the first sidewall and communicates with the first liquid cooling channel. The first sidewall is recessed on one side facing the second plate to form the second sub-opening. The second plate includes a second sidewall near the first plate, and the second opening penetrates the second sidewall; The first sub-opening extends to the second sidewall, and the second opening extends to the first sidewall and is connected to the second sub-opening.

4. The liquid-cooled plate assembly according to claim 2, characterized in that, The sealing block further includes a first limiting section and a second limiting section. The first limiting section protrudes from the first plate, and the second limiting section protrudes from the second plate. The first limiting section is sealed to the first peripheral wall forming the first opening, and the second limiting section is sealed to the second peripheral wall forming the second opening.

5. The liquid-cooled plate assembly according to claim 4, characterized in that, The sealing block further includes a third limiting segment and a fourth limiting segment. The third limiting segment protrudes from the first plate, and the fourth limiting segment protrudes from the second plate. The two ends of the third limiting segment are respectively connected to the two ends of the fourth limiting segment to form a surrounding ring. The surrounding ring surrounds the first opening and the second opening. The first limiting segment is sealed to the first plate, and the second limiting segment is sealed to the second plate.

6. The liquid-cooled plate assembly according to claim 2, characterized in that, The first plate includes a first sidewall near the second plate, and the first opening penetrates the first sidewall and connects to the first liquid cooling channel; The second plate includes a second sidewall near the first plate, and the second opening penetrates the second sidewall; The first plate is provided with a first groove facing the first sidewall, and the third liquid cooling channel is formed in the first groove. The first groove connects the first opening and the second opening.

7. The liquid-cooled plate assembly according to claim 6, characterized in that, The second plate is provided with a second groove facing the second sidewall. The second groove connects the first groove and the second opening. The third liquid cooling channel is formed in the first groove and the second groove.

8. The liquid-cooled plate assembly according to any one of claims 1-7, characterized in that, The first liquid cooling plate has multiple spaced openings. The second liquid cooling plate is provided with a plurality of second openings spaced apart, and the plurality of second openings are provided in a one-to-one correspondence with the plurality of first openings; There are multiple sealing blocks, and each sealing block is correspondingly covered by one of the first openings and one of the second openings.

9. A liquid-cooled plate assembly, characterized in that, include: A first liquid cooling plate, wherein a first liquid cooling channel is provided in the first liquid cooling plate, the first liquid cooling plate includes a first sidewall, the first sidewall has a first opening, and the first opening communicates with the first liquid cooling channel. A second liquid cooling plate is connected to the first liquid cooling plate. The second liquid cooling plate is provided with a second liquid cooling channel. The second liquid cooling plate includes a second sidewall connected to the first sidewall. The second sidewall is provided with a second opening. The second opening communicates with the second liquid cooling channel. A sealing block is provided on the first opening and the second opening. The inner cavity of the sealing block is provided with a third liquid-cooled flow channel that connects the first opening and the second opening. The sealing block is sealed to the first side wall and the second side wall.

10. A box, characterized in that, include: The liquid-cooled plate assembly as described in any one of claims 1-9, wherein the housing comprises two liquid-cooled plate assemblies, the two liquid-cooled plate assemblies being disposed opposite to each other; The third liquid cooling plate is disposed between the two second liquid cooling plates, and each third liquid cooling plate is connected to one of the second liquid cooling plates.

11. The housing according to claim 10, characterized in that, The enclosure also includes a fourth liquid cooling plate disposed opposite to the third liquid cooling plate and the two second liquid cooling plates, and a front panel connected between the fourth liquid cooling plate and the liquid cooling base plate; The housing also includes a liquid cooling pipe, which includes a first liquid cooling section, a connecting section, and a second liquid cooling section connected in sequence. The first liquid cooling section extends along a first direction and is connected to the fourth liquid cooling plate. The second liquid cooling section extends along a second direction and is connected to the second liquid cooling plate. The first and second directions intersect. The connecting section is bent and connected between the first and second liquid cooling sections.

12. The housing according to claim 11, characterized in that, The enclosure also includes two liquid cooling connectors and two liquid cooling pipes, with each liquid cooling pipe corresponding to one liquid cooling connector. One liquid cooling pipe is used to input coolant, and the other liquid cooling pipe is used to output coolant.

13. A battery pack, characterized in that, include The housing as described in any one of claims 10-12, wherein the two liquid cooling components and the third liquid cooling plate form an accommodating space; A battery module, wherein the battery module is disposed within the accommodating space.

Images