Liquid cooling plate and battery pack

Abstract

The utility model provides a liquid cooling plate and a battery pack, and the liquid cooling plate comprises a body part which is provided with a heat exchange cavity and an opening structure which are communicated with each other, and the opening structure is arranged at the side part of the heat exchange cavity; at least part of the blocking part is located in the opening structure so as to block and support the opening structure; the liquid inlet structure is arranged on the plugging part and communicates with the heat exchange cavity; and the liquid outlet structure is arranged on the plugging part and communicates with the heat exchange cavity. By means of the scheme, the problems that in the prior art, after the liquid inlet nozzle and the liquid outlet nozzle are assembled to the body part, stress concentration is prone to occurring at the connecting position, and the assembling process is complex can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a liquid cooling plate and a battery pack. Background Art

[0002] During the battery pack integration process, the liquid cooling plate plays a crucial role in heat dissipation. This plate typically consists of a main body, a liquid inlet nozzle, and a liquid outlet nozzle. In existing solutions, assembling the inlet and outlet nozzles onto the main body can lead to stress concentration at the connection points between the main body and the liquid inlet nozzle, and at the connection points between the main body and the liquid outlet nozzle. Furthermore, the assembly process is complex. Utility Model Content

[0003] The utility model provides a liquid cooling plate and a battery pack to solve the problem in the prior art that after the liquid inlet and outlet nozzles are assembled to the main body, stress concentration is easily generated at the connection position and the assembly process is relatively complicated.

[0004] According to one aspect of the present invention, a liquid cooling plate is provided, which includes: a main body portion, having a heat exchange cavity and an opening structure that are interconnected, and the opening structure is arranged on the side of the heat exchange cavity; a blocking portion, at least part of which is located in the opening structure to block and support the opening structure; a liquid inlet structure, which is arranged on the blocking portion and is connected to the heat exchange cavity; and a liquid outlet structure, which is arranged on the blocking portion and is connected to the heat exchange cavity.

[0005] Furthermore, the main body includes: a first plate body and a second plate body, the second plate body and the first plate body are arranged relative to each other, and a heat exchange cavity is formed between the second plate body and the first plate body; at least a portion of the end of the first plate body along the first direction is bent away from the second plate body to form a positioning portion, and the positioning portion is used to position and cooperate with the battery module; and / or, at least a portion of the end of the second plate body along the first direction is bent away from the first plate body to form a positioning portion, and the positioning portion is used to position and cooperate with the battery module.

[0006] Furthermore, an opening structure is formed between the positioning portion and the other plate body, the positioning portion includes a straight section and a bent section connected to each other along a first direction, a give way groove is formed between the straight section and the other plate body, the give way groove is located at the end portion in the extension direction of the opening structure, and the end of the give way groove away from the opening structure extends to the side of the main body, and the give way groove is used for the sealing portion to pass through.

[0007] Furthermore, the positioning portion includes a bending section, an angle is formed between the bending section and the first plate body, and the bending section is used for welding to the end plate of the battery module.

[0008] Furthermore, the opening structure includes a first opening and a second opening, and the first opening and the second opening are relatively arranged at both ends of the heat exchange chamber along the first direction; the sealing part includes a first sealing part and a second sealing part, at least part of the first sealing part is passed through the first opening to seal and support the first opening, and at least part of the second sealing part is passed through the second opening to seal and support the second opening; the liquid inlet structure is arranged on one of the first sealing part and the second sealing part, and the liquid outlet structure is arranged on one of the first sealing part and the second sealing part.

[0009] Furthermore, the liquid cooling plate also includes: a partition portion, which is arranged in the heat exchange cavity to divide the heat exchange cavity into a liquid inlet cavity and a liquid outlet cavity that are independent of each other, the liquid inlet structure is connected to the liquid inlet cavity, the liquid outlet structure is connected to the liquid outlet cavity, and a connecting channel is formed between the partition portion and the main body, and the liquid inlet cavity and the liquid outlet cavity are connected through the connecting channel.

[0010] Furthermore, the liquid inlet structure includes a first tube seat and a first pipe section connected to each other, the first tube seat is arranged on the sealing part, the first tube seat has a first chamber and a first interface that are interconnected, the first interface is connected to the heat exchange chamber, the first tube section and the first interface are respectively connected to the first chamber, and the first tube section and the first interface are located on different surfaces of the first tube seat; and / or, the liquid outlet structure includes a second tube seat and a second tube section that are interconnected, the second tube seat is arranged on the sealing part, the second tube seat has a second chamber and a second interface that are interconnected, the second interface is connected to the second chamber, the second tube section and the second interface are respectively connected to the second chamber, and the second tube section and the second interface are located on different surfaces of the second tube seat.

[0011] According to another aspect of the present invention, a battery pack is provided, comprising: a battery module, wherein at least two groups of battery modules are provided; the above-mentioned liquid cooling plate, wherein the liquid cooling plate is stacked with the battery module; wherein the liquid cooling plate comprises a middle liquid cooling plate and an end liquid cooling plate, wherein a middle liquid cooling plate is provided between two adjacent groups of battery modules; and the end liquid cooling plate is provided on a side of the battery module located at the end away from the middle liquid cooling plate.

[0012] Furthermore, positioning portions are respectively provided at the edges of both sides of the central liquid cooling plate. The positioning portions are located on the outside of the corresponding battery modules and are respectively positioned and matched with the battery modules.

[0013] Furthermore, the battery module includes a battery cell and two end plates, the battery cell is located between the two end plates, the battery module includes a module fixing part, the module fixing part is arranged on the same side of the end plates of multiple groups of battery modules, and the module fixing part includes: a support column; a connecting plate, which is arranged on the support column, and each end plate corresponds to at least one connecting plate, and the connecting plate is parallel to and abuts the end plate; a fastener, and the connecting plate is connected to the end plate through the fastener.

[0014] By applying the technical solution of the present invention, the liquid inlet structure and the liquid outlet structure are respectively integrated into the blocking portion, and then the blocking portion is installed at the opening structure and blocks the opening structure, so that the liquid inlet structure and the liquid outlet structure are respectively connected to the heat exchange chamber. This arrangement avoids the need to separately provide two through holes on the main body that are adapted to the liquid inlet structure and the liquid outlet structure, thereby reducing the possibility of stress concentration in the main body. Moreover, the blocking portion that integrates the liquid inlet structure and the liquid outlet structure is installed at the opening structure, which simplifies the assembly process. In addition, at least a portion of the blocking portion is located within the opening structure, which can reduce the possibility of deformation at the opening structure and further ensure the structural stability of the liquid cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic structural diagram of a liquid cooling plate provided by an embodiment of the present invention is shown;

[0017] Figure 2 Shown Figure 1 Schematic diagram of the local structure at A in FIG;

[0018] Figure 3 It shows a schematic structural diagram of the water inlet structure and the water outlet structure provided by an embodiment of the present utility model being integrated into the first blocking part;

[0019] Figure 4 Shown Figure 1 A partial structural cross-sectional view of the liquid cooling plate shown;

[0020] Figure 5 Shown Figure 1 A side view of the main body of the liquid cooling plate;

[0021] Figure 6 A schematic structural diagram of another liquid cooling plate provided by an embodiment of the present utility model is shown;

[0022] Figure 7 A schematic diagram of the structure of a battery pack provided by an embodiment of the present invention from a first perspective is shown;

[0023] Figure 8 Shown Figure 7 Schematic diagram of the local structure at B in the middle;

[0024] Figure 9 A schematic structural diagram of a battery pack provided by an embodiment of the present invention from a second perspective is shown;

[0025] Figure 10A schematic structural diagram of a module fixing portion provided by an embodiment of the present invention from a first perspective is shown;

[0026] Figure 11 A structural schematic diagram of a module fixing portion provided by an embodiment of the present invention from a second perspective is shown.

[0027] The above drawings include the following reference numerals:

[0028] 10. Body part;

[0029] 101, heat exchange chamber; 1011, communication channel; 1012, liquid inlet channel; 1013, liquid outlet channel;

[0030] 1014, first confluence channel; 1015, second confluence channel; 1016, third confluence channel; 1017, fourth confluence channel;

[0031] 102. First opening; 103. Gap groove; 104. Second opening;

[0032] 11. First plate; 12. Second plate;

[0033] 20. First blocking part;

[0034] 30. Liquid inlet structure; 31. First tube seat; 311. First chamber; 32. First tube section;

[0035] 40. Liquid outlet structure; 41. Second tube base; 411. Second chamber; 42. Second tube section;

[0036] 51. separator; 52. first rib; 53. second rib;

[0037] 60. Second blocking portion;

[0038] 70. Positioning portion; 71. Straight section; 72. Bend section;

[0039] 01. Battery module; 02. Middle liquid cooling plate; 03. End liquid cooling plate;

[0040] 04. Module fixing part; 041. Support column; 042. Connecting plate; 043. Fastener;

[0041] 05. Thermal conductive layer. DETAILED DESCRIPTION

[0042] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 5 As shown, an embodiment of the present invention provides a liquid cooling plate, which includes a main body 10, a sealing portion, a liquid inlet structure 30, and a liquid outlet structure 40. The main body 10 has a heat exchange cavity 101 and an opening structure that are interconnected. The opening structure is provided on the side of the heat exchange cavity 101. At least a portion of the sealing portion is located within the opening structure to seal and support the opening structure. The liquid inlet structure 30 is provided on the sealing portion and communicates with the heat exchange cavity 101. The liquid outlet structure 40 is provided on the sealing portion and communicates with the heat exchange cavity 101.

[0044] By applying the technical solution of the present invention, the liquid inlet structure 30 and the liquid outlet structure 40 are respectively integrated into the blocking portion, and then the blocking portion is installed at the opening structure and blocks the opening structure, so that the liquid inlet structure 30 and the liquid outlet structure 40 are respectively connected to the heat exchange cavity. This arrangement avoids the need to separately provide two through holes on the main body 10 that are adapted to the liquid inlet structure and the liquid outlet structure, thereby reducing the possibility of stress concentration in the main body. Moreover, the blocking portion integrated with the liquid inlet structure 30 and the liquid outlet structure 40 is installed at the opening structure, which simplifies the assembly process. In addition, at least a portion of the blocking portion is located within the opening structure, which can reduce the possibility of deformation at the opening structure and further ensure the structural stability of the liquid cooling plate.

[0045] In this solution, the main body 10 includes a first plate 11 and a second plate 12 . The second plate 12 and the first plate 11 are arranged relatively spaced apart, and a heat exchange cavity 101 is formed between the second plate 12 and the first plate 11 .

[0046] In this embodiment, at least a portion of the first plate 11's end portion along the first direction is bent away from the second plate 12 to form a positioning portion 70. Positioning portion 70 is used to align with the battery module. This arrangement facilitates the alignment of the liquid cooling plate and battery module 01, facilitating assembly of the battery pack.

[0047] It is understood that the first plate 11 has two ends along the first direction, and the two ends extend along the second direction, which is perpendicular to the first direction. The two ends of the first plate 11 along the first direction are bent in a direction away from the second plate 12 to form two positioning portions 70. Figure 1 The X direction is the first direction, and the Y direction is the second direction.

[0048] Furthermore, at least a portion of the end portion of the second plate 12 along the first direction is bent in a direction away from the first plate 11 to form a positioning portion 70, and the positioning portion 70 is used to position and cooperate with the battery module. The second plate 12 has two ends along the first direction, and the two ends of the second plate 12 along the first direction respectively extend in a second direction, and the second direction is perpendicular to the first direction. The two ends of the second plate 12 along the first direction are bent in a direction away from the first plate 11 and form two positioning portions 70 respectively. That is, the two positioning portions 70 of the first plate 11 are respectively arranged opposite to the two positioning portions 70 on the second plate 12 in the thickness direction of the liquid cooling plate. Such an arrangement allows, when the liquid cooling plate of this solution is applied to a scenario where multiple battery modules are stacked, one such liquid cooling plate can be provided between two adjacent battery modules, and the positioning portion 70 on the first plate 11 is used to position and cooperate with the battery module on the side of the first plate 11 away from the second plate 12. The positioning portion 70 on the second plate body 12 is used to position and cooperate with the battery module on the side of the second plate body 12 away from the first plate body 11 .

[0049] like Figure 6 As shown, in some embodiments of the present solution, one of the first plate body 11 and the second plate body 12 is provided with a positioning portion 70 .

[0050] like Figure 2 Specifically, an opening structure is formed between the positioning portion 70 and the other plate. The positioning portion 70 includes a straight section 71 and a bent section 72 interconnected along a first direction. A clearance groove 103 is formed between the straight section 71 and the other plate. The clearance groove 103 is located at the end of the opening structure in the extension direction. The end of the clearance groove 103 away from the opening structure extends to the side of the main body 10. The clearance groove 103 is used to allow the blocking portion to pass through. This arrangement facilitates the insertion of at least a portion of the blocking portion into the opening structure, improving the ease of assembly of the device.

[0051] Furthermore, the bent section 72 forms an angle with the first plate 11, and is used to weld to the end plate of the battery module. This arrangement allows the bent section 72 of the device to not only position and cooperate with the end plate of the battery module, but also to be fixedly connected to the end plate by welding, further improving the stability of the connection between the liquid cooling plate and the battery module.

[0052] like Figures 1 to 6As shown, in the embodiment of this solution, the opening structure includes a first opening 102 and a second opening 104, which are arranged opposite each other along the first direction at the two ends of the heat exchange chamber 101. The blocking portion includes a first blocking portion 20 and a second blocking portion 60, at least a portion of the first blocking portion 20 is disposed within the first opening 102 to block and support the first opening 102, and at least a portion of the second blocking portion 60 is disposed within the second opening 104 to block and support the second opening 104. The liquid inlet structure 30 is disposed on one of the first blocking portion 20 and the second blocking portion 60, and the liquid outlet structure 40 is disposed on one of the first blocking portion 20 and the second blocking portion 60. This arrangement allows the main body 10 to be formed by pultrusion, that is, ensuring that the main body is an extruded profile, thereby improving the structural strength, structural stability, and sealing performance of the main body 10.

[0053] In the embodiment of this solution, at least part of the first blocking portion 20 is located in the first opening 102 to support the first opening 102. This configuration can enhance the structural stability of the liquid cooling plate in this area and reduce deformation caused by coolant pressure or external factors.

[0054] Furthermore, the first blocking portion 20 is welded to the main body 10. This arrangement can ensure the sealing performance and connection stability of the first blocking portion 20 and the main body 10.

[0055] Specifically, if Figure 3 As shown, in this embodiment, the first sealing portion 20 comprises a first sealing rod, which is provided with a first through-hole and a second through-hole, spaced apart along the length of the first sealing rod. A liquid inlet structure 30 is provided at the first through-hole, with the first interface communicating with the first through-hole. A liquid outlet structure 40 is provided at the second through-hole, with the second interface communicating with the second through-hole. This arrangement provides a simple structure and facilitates the first sealing portion 20 in both sealing and supporting the first opening 102.

[0056] like Figure 6 As shown, in the embodiment of this solution, the second blocking portion 60 includes a second blocking rod, which is embedded in the second opening 104 and supports the second opening 104 , and is welded to the main body 10 .

[0057] like Figure 4As shown, the liquid cooling plate further includes a partition 51, which is disposed within the heat exchange chamber 101 to separate the heat exchange chamber 101 into a liquid inlet chamber and a liquid outlet chamber. The liquid inlet structure 30 is in communication with the liquid inlet chamber, and the liquid outlet structure 40 is in communication with the liquid outlet chamber. A communication channel 1011 is formed between the partition 51 and the main body 10, and the liquid inlet chamber and the liquid outlet chamber are connected through the communication channel 1011. The independent liquid inlet and outlet chambers help optimize the flow of coolant within the liquid cooling plate and enhance the cooling effect.

[0058] Furthermore, the communication channel 1011 is connected to the end of the liquid inlet chamber away from the liquid inlet structure 30 and the end of the liquid outlet chamber away from the liquid outlet structure 40. By providing the communication channel 1011 at the end points away from the liquid inlet and outlet structures, the residence time of the coolant in the heat exchange chamber can be increased, thereby improving the heat exchange efficiency.

[0059] Specifically, the partition portion 51 includes a partition rib extending perpendicularly to the direction of extension of the first sidewall. One end of the partition rib is connected to the first blocking portion 20, while the other end is spaced apart from the side of the heat exchange chamber 101 away from the first opening 102, forming a communication channel 1011. This arrangement provides a simple structure and facilitates separation of the liquid inlet and outlet chambers.

[0060] Furthermore, the liquid inlet cavity includes a plurality of independently arranged liquid inlet channels 1012, one end of each of which is connected to the liquid inlet structure 30, and one end of each of which is connected to the communication channel 1011. The liquid outlet cavity includes a plurality of independently arranged liquid outlet channels 1013, one end of each of which is connected to the liquid outlet structure 40, and the other end of each of which is connected to the communication channel 1011. This arrangement can improve the uniformity of fluid circulation in the liquid inlet and outlet cavities, thereby enhancing the cooling effect.

[0061] Furthermore, the heat exchange chamber 101 also includes a first converging channel 1014, a second converging channel 1015, a third converging channel 1016, and a fourth converging channel 1017. The first converging channel 1014 is disposed on a side of the multiple liquid inlet channels 1012 close to the liquid inlet structure 30. The first converging channel 1014 is connected to the liquid inlet structure 30, and the first ends of the multiple liquid inlet channels 1012 are respectively connected to the first converging channel 1014. This arrangement can further improve the uniformity of fluid distribution, improve the uniformity of fluid circulation, and enhance the cooling effect.

[0062] Similarly, the second confluence channel 1015 is arranged on the side of the multiple liquid inlet channels 1012 away from the liquid inlet structure 30, and the second ends of the multiple liquid inlet channels 1012 are respectively connected to the second confluence channel 1015, and the second confluence channel 1015 is connected to the connecting channel 1011; the third confluence channel 1016 is arranged on the side of the multiple liquid outlet channels 1013 close to the liquid outlet structure 40, the third confluence channel 1016 is connected to the liquid outlet structure 40, and the first ends of the multiple liquid outlet channels 1013 are respectively connected to the third confluence channel 1016; the fourth confluence channel 1017 is arranged on the side of the multiple liquid outlet channels 1013 away from the liquid outlet channels 1013, and the second ends of the multiple liquid outlet channels 1013 are respectively connected to the fourth confluence channel 1017, and the fourth confluence channel 1017 is connected to the connecting channel 1011.

[0063] Specifically, the liquid cooling plate further includes a first rib 52 , which is disposed in the liquid inlet cavity to separate the liquid inlet cavity into a plurality of mutually independent liquid inlet channels 1012 .

[0064] This solution does not limit the specific shape and number of the first ribs 52 .

[0065] At least one first rib 52 is provided.

[0066] In the embodiment of this solution, a plurality of first ribs 52 are provided, and the plurality of first ribs 52 are spaced apart along the length direction of the first opening 102 , and a liquid inlet channel 1012 is formed between two adjacent first ribs 52 .

[0067] In the embodiment of the present scheme, the first rib 52 is linear, and the first rib 52 extends along the perpendicular direction of the first opening 102. There is a distance between the two ends of the first rib 52 and the two side walls of the liquid inlet cavity respectively, and the first confluence channel 1014 and the second confluence channel 1015 are formed between the two ends of the multiple first ribs 52 and the side walls of the liquid inlet cavity respectively.

[0068] In other embodiments of this solution, the first rib 52 may be configured to be wavy.

[0069] Furthermore, the liquid cooling plate further includes a second rib 53 , which is disposed in the liquid outlet cavity to separate the liquid outlet cavity into a plurality of independent liquid outlet channels 1013 .

[0070] This solution does not limit the specific shape and number of the second ribs 53.

[0071] At least one second rib 53 is provided.

[0072] In the embodiment of this solution, a plurality of second ribs 53 are provided, and the plurality of second ribs 53 are spaced apart along the length direction of the first opening 102 , and a liquid outlet channel 1013 is formed between two adjacent second ribs 53 .

[0073] In the embodiment of the present scheme, the second rib 53 is linear, and the second rib 53 extends along the perpendicular direction of the first opening 102. There is a distance between the two ends of the second rib 53 and the two side walls of the liquid outlet cavity, and a third confluence channel 1016 and a fourth confluence channel 1017 are formed between the two ends of multiple second ribs 53 and the side walls of the liquid outlet cavity.

[0074] In other embodiments of this solution, the second rib 53 may be configured to be wavy.

[0075] like Figure 3 As shown, the liquid inlet structure 30 further includes a first tube base 31 and a first tube section 32 that are interconnected. The first tube base 31 is disposed on the sealing portion and has a first chamber 311 and a first interface that are interconnected. The first interface is connected to the heat exchange chamber 101. The first tube section 32 and the first interface are respectively connected to the first chamber 311. The first tube section 32 and the first interface are located on different surfaces of the first tube base 31. The first tube section 32 serves as a guide for fluid entering the liquid cooling plate from the outside, helping to control the direction and velocity of the fluid flow. The first tube base 31 can also serve as a fluid buffer, reducing the possibility of fluid directly impacting the heat exchange chamber 101 and preventing damage caused by fluid impact. Furthermore, the first tube section 32 and the first interface are located on different surfaces of the first tube base 31. This arrangement makes the structural design of the liquid inlet structure 30 reasonable, avoids the possibility of interference between the first tube section 32 and the main body 10, and improves the ease of assembly of the liquid inlet structure 30.

[0076] In the embodiment of this solution, the first tube base 31 is substantially in the shape of a cubic shell, the first interface is provided on the side surface of the first tube base 31, and the first tube base 31 is provided on one surface of the first tube base 31. This arrangement has a simple structure and is easy to process.

[0077] In other embodiments of this solution, the first tube base 31 may be configured as a shell-like structure of other shapes, such as a cylindrical shell-like structure, the first interface may be provided on the end surface of the first tube base 31 , and the first tube section 32 may be provided on the circumferential surface of the first tube base 31 .

[0078] like Figure 3As shown, the liquid outlet structure 40 further includes a second tube base 41 and a second tube segment 42 that are interconnected. The second tube base 41 is disposed on the sealing portion and has a second chamber 411 and a second interface that are interconnected. The second interface is connected to the second chamber 411, and the second tube segment 42 and the second interface are respectively connected to the second chamber 411. The second tube segment 42 and the second interface are located on different surfaces of the second tube base 41. In the embodiment of this solution, the shape of the liquid outlet structure 40 is the same as that of the liquid inlet structure 30. This configuration can reduce the number of components and improve the assembly efficiency of the liquid inlet structure 30 and the liquid outlet structure 40.

[0079] like Figures 7 to 9 As shown, an embodiment of the present invention further provides a battery pack comprising battery modules 01 and the aforementioned liquid cooling plates, with at least two groups of battery modules 01 provided. The liquid cooling plates are stacked on the battery modules 01. The liquid cooling plates comprise a central liquid cooling plate 02 and end liquid cooling plates 03, with a central liquid cooling plate 02 disposed between two adjacent groups of battery modules 01. The end liquid cooling plates 03 are disposed on the side of the battery modules 01 located at the ends, away from the central liquid cooling plate 02. This arrangement allows the battery modules 01 to be liquid cooled by both the central liquid cooling plate 02 and the end liquid cooling plates 03, improving the cooling effect on the battery modules 01.

[0080] Furthermore, positioning portions 70 are provided on the edges of both sides of the central liquid cooling plate 02. The positioning portions 70 are located outside the corresponding battery modules 01 and respectively position and cooperate with the battery modules 01. This arrangement can improve the positioning effect of the battery modules 01 and enhance the stability of the battery modules 01.

[0081] like Figures 9 to 11 As shown, battery module 01 further includes a battery cell and two end plates, with the battery cell located between the two end plates. Battery module 01 includes a module fixing portion 04, which is arranged on the same side of the end plates of multiple battery modules 01. Module fixing portion 04 includes: support columns 041, connecting plates 042, and fasteners 043. Connecting plates 042 are arranged on support columns 041, and each end plate corresponds to at least one connecting plate 042. Connecting plates 042 are parallel to and abut against the end plates; connecting plates 042 are connected to the end plates via fasteners 043.

[0082] With such arrangement, the structure is reasonably designed, can ensure the contact area between the module fixing portion 04 and the end plate, and is easy to assemble.

[0083] Furthermore, the positioning portion 70 protrudes outward from the end plate. A clearance groove is provided on the side of the support column 041 near the battery module 01. The clearance groove extends perpendicularly through the support column 041 and corresponds to the positioning portion 70, allowing the positioning portion 70 to clear the space. This arrangement further enhances the stability of the contact between the connecting plate 042 and the end plate, reducing the possibility of gaps between the end plate and the connecting plate 042.

[0084] Specifically, in the embodiment of this solution, the liquid inlet structure 30, the liquid outlet structure 40, the module fixing portion 04, and the end plate are located on the same side of the battery pack. This arrangement facilitates assembly and maintenance of the battery pack.

[0085] like Figure 8 As shown, the battery pack further includes a heat-conducting layer 05 disposed between the liquid cooling plate and the battery module 01. The provision of the heat-conducting layer 05 can further enhance the heat exchange effect between the liquid cooling plate and the battery module 01.

[0086] It can be understood that a heat conducting layer 05 is provided on one side of the end liquid cooling plate 03 close to the battery module 01 ; and heat conducting layers 05 are provided on both sides of the middle liquid cooling plate 02 .

[0087] In this embodiment, the battery pack also includes a retaining bar, which is positioned on the surface of the liquid cooling plate near the battery module 01. The thermal conductive layer 05 comprises thermally conductive adhesive, which is applied to the surface of the liquid cooling plate. The retaining bar cooperates with the adhesive to limit the position. This arrangement can reduce or avoid the possibility of uneven application or deformation of the thermally conductive adhesive, thereby improving the thermal conductivity of the thermally conductive adhesive.

[0088] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0089] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0090] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, liquid level" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0091] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0092] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A liquid cooling plate, characterized in that: The liquid cooling plate comprises: The main body (10) has a heat exchange cavity (101) and an opening structure that are interconnected, and the opening structure is arranged on the side of the heat exchange cavity (101); a blocking portion, at least a portion of which is located within the opening structure to block and support the opening structure; a liquid inlet structure (30) disposed on the blocking portion, the liquid inlet structure (30) being in communication with the heat exchange cavity (101); A liquid outlet structure (40) is provided on the blocking portion, and the liquid outlet structure (40) is in communication with the heat exchange cavity (101).

2. The liquid cooling plate according to claim 1, wherein: The main body (10) comprises: a first plate body (11) and a second plate body (12), wherein the second plate body (12) and the first plate body (11) are arranged relative to each other and spaced apart, and the heat exchange cavity (101) is formed between the second plate body (12) and the first plate body (11); At least a portion of the end portion of the first plate (11) along the first direction is bent in a direction away from the second plate (12) to form a positioning portion (70), and the positioning portion (70) is used for positioning and cooperating with the battery module; and / or, At least a portion of the end portion of the second plate body (12) along the first direction is bent in a direction away from the first plate body (11) to form a positioning portion (70), and the positioning portion (70) is used for positioning and cooperating with the battery module.

3. The liquid cooling plate according to claim 2, wherein: The opening structure is formed between the positioning portion (70) and the other plate body, and the positioning portion (70) includes a straight section (71) and a bent section (72) connected to each other along a first direction. A clearance groove (103) is formed between the straight section (71) and the other plate body, and the clearance groove (103) is located at the end of the extension direction of the opening structure. The end of the clearance groove (103) away from the opening structure extends to the side surface of the main body (10), and the clearance groove (103) is used for the sealing portion to pass through.

4. The liquid cooling plate according to claim 2, wherein: The positioning portion (70) comprises a bending section (72), an angle is formed between the bending section (72) and the first plate body (11), and the bending section (72) is used for welding to the end plate of the battery module.

5. The liquid cooling plate according to claim 1, wherein: The opening structure comprises a first opening (102) and a second opening (104), and the first opening (102) and the second opening (104) are arranged at two ends of the heat exchange cavity (101) relative to each other along a first direction; the blocking portion comprises a first blocking portion (20) and a second blocking portion (60), at least a portion of the first blocking portion (20) is passed through the first opening (102) to block and support the first opening (102), and at least a portion of the second blocking portion (60) is passed through the second opening (104) to block and support the second opening (104); the liquid inlet structure (30) is arranged on one of the first blocking portion (20) and the second blocking portion (60), and the liquid outlet structure (40) is arranged on one of the first blocking portion (20) and the second blocking portion (60).

6. The liquid cooling plate according to claim 1, wherein: The liquid cooling plate further comprises: A partition (51) is arranged in the heat exchange chamber (101) to separate the heat exchange chamber (101) into a liquid inlet chamber and a liquid outlet chamber that are independent of each other, the liquid inlet structure (30) is connected to the liquid inlet chamber, and the liquid outlet structure (40) is connected to the liquid outlet chamber. A connecting channel (1011) is formed between the partition (51) and the main body (10), and the liquid inlet chamber and the liquid outlet chamber are connected through the connecting channel (1011).

7. The liquid cooling plate according to any one of claims 1 to 6, characterized in that: The liquid inlet structure (30) comprises a first tube seat (31) and a first tube section (32) connected to each other, the first tube seat (31) being arranged on the blocking portion, the first tube seat (31) having a first chamber (311) and a first interface communicating with each other, the first interface communicating with the heat exchange chamber (101), the first tube section (32) and the first interface respectively communicating with the first chamber (311), the first tube section (32) and the first interface being located on different surfaces of the first tube seat (31); and / or, The liquid outlet structure (40) comprises a second tube seat (41) and a second tube section (42) connected to each other, wherein the second tube seat (41) is arranged on the blocking portion, and the second tube seat (41) has a second chamber (411) and a second interface that are connected to each other, wherein the second interface is connected to the second chamber (411), and the second tube section (42) and the second interface are respectively connected to the second chamber (411), and the second tube section (42) and the second interface are located on different surfaces of the second tube seat (41).

8. A battery pack, characterized in that: include: A battery module (01), wherein the battery module (01) is provided with at least two groups; The liquid cooling plate according to any one of claims 1 to 7, wherein the liquid cooling plate and the battery module (01) are stacked; The liquid cooling plate comprises a middle liquid cooling plate (02) and an end liquid cooling plate (03), wherein a middle liquid cooling plate (02) is provided between two adjacent groups of battery modules (01); and the end liquid cooling plate (03) is provided on a side of the battery module (01) located at the end, away from the middle liquid cooling plate (02).

9. The battery pack according to claim 8, characterized in that: Positioning portions (70) are respectively provided at the edges of both sides of the middle liquid cooling plate (02); the positioning portions (70) are located outside the corresponding battery modules (01) and are respectively positioned and matched with the battery modules (01).

10. The battery pack according to claim 8, wherein: The battery module (01) comprises a battery core and two end plates, wherein the battery core is located between the two end plates. The battery module (01) comprises a module fixing portion (04), wherein the module fixing portion (04) is arranged on the same side of the end plates of multiple groups of the battery modules (01), and the module fixing portion (04) comprises: Support column (041); A connecting plate (042) is provided on the supporting column (041), each end plate is provided with at least one connecting plate (042), and the connecting plate (042) is parallel to and abuts against the end plate; A fastener (043), the connecting plate (042) is connected to the end plate via the fastener (043).

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