Cooling assembly, battery tray, battery pack and electric equipment

Abstract

The invention provides a cooling assembly, a battery tray, a battery pack and electric equipment, the cooling assembly comprises at least one first cold plate and a plurality of second cold plates, the first cold plate is internally provided with a first flow channel, and one side of the first cold plate along a first direction is provided with a plurality of first liquid inlets and a plurality of first liquid outlets; the plurality of first liquid inlets and the plurality of first liquid outlets are communicated with the first flow channel; a plurality of second cold plates are arranged in the second direction and extend in the third direction, second flow channels are formed in the second cold plates, first inserting parts and second inserting parts are arranged on the sides, facing the first cold plates, of the second cold plates, the first inserting parts are provided with second liquid inlets, and the second inserting parts are provided with second liquid outlets; the first liquid inlet and the second liquid outlet are both communicated with the second flow channel; the first inserting parts are connected with the first liquid inlets in a one-to-one correspondence mode, and the second inserting parts are connected with the first liquid outlets in a one-to-one correspondence mode. The cooling assembly is low in cost and easy to assemble.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a cooling assembly, a battery tray, a battery pack, and an electrical device. Background Art

[0002] In the related art, the battery pack mainly includes a pack body, a battery group and a cold plate assembly. The battery pack is housed in the pack body. The cold plate assembly includes a lower cold plate and multiple side cold plates. The battery pack includes multiple battery cells, and the multiple battery cells are arranged in the same direction. The lower cold plate is located at the bottom of the battery pack to cool the bottom of the battery pack. The side cold plate is arranged between two adjacent battery cells to cool the sides of the battery cells.

[0003] However, the above-mentioned cold plate assembly is relatively expensive and complicated to install. Summary of the Invention

[0004] Based on this, the present application provides a cooling assembly, a battery tray, a battery pack and an electrical device. The cooling assembly has a low cost and is relatively simple to assemble.

[0005] In a first aspect, the present application provides a cooling assembly, comprising:

[0006] At least one first cold plate, the first cold plate having a first flow channel therein, a plurality of first liquid inlets and a plurality of first liquid outlets being provided on one side of the first cold plate along a first direction, the plurality of first liquid inlets and the plurality of first liquid outlets being in communication with the first flow channel;

[0007] a plurality of second cold plates, the plurality of second cold plates being arranged along the second direction, the second cold plates extending along the third direction, a second flow channel being provided in the second cold plates, a first plug-in portion and a second plug-in portion being provided on a side of the second cold plate facing the first cold plate, the first plug-in portion being provided with a second liquid inlet, the second plug-in portion being provided with a second liquid outlet, the first liquid inlet and the second liquid outlet being both in communication with the second flow channel;

[0008] The first plug-in portion is connected to the first liquid inlet in a one-to-one correspondence, and the second plug-in portion is connected to the first liquid outlet in a one-to-one correspondence;

[0009] The first direction, the second direction and the third direction are arranged at angles to each other.

[0010] In a possible implementation, the first plug-in portion of each second cold plate is welded or bonded to the first cold plate, and the second plug-in portion of each second cold plate is welded or bonded to the first cold plate.

[0011] In a possible implementation, the second liquid inlet and the second liquid outlet are located on two sides of the second cold plate along the third direction.

[0012] In one possible implementation, the first cold plate is further provided with a total liquid inlet and a total liquid outlet, the total liquid inlet, the total liquid outlet, and the first liquid inlet are located on one side of the first cold plate, the liquid inlet end of the first flow channel is connected to the total liquid inlet, and the liquid outlet end of the first flow channel is connected to the total liquid outlet;

[0013] The main liquid inlet and the main liquid outlet are both configured to be connected to a coolant circulation device.

[0014] In a possible implementation, the first flow channel includes a first sub-flow channel, a plurality of second sub-flow channels, and a third sub-flow channel that are interconnected;

[0015] At least one of the first sub-channel and the second sub-channel is connected to the first liquid inlet, and at least one of the third sub-channel and the second sub-channel is connected to the first liquid outlet.

[0016] In a possible implementation, a plurality of second sub-flow channels are arranged along the second direction, and the second sub-flow channels extend along the third direction;

[0017] The first sub-channel and the third sub-channel both extend along the second direction, and both ends of each second sub-channel are connected to the first sub-channel and the third sub-channel respectively.

[0018] In a possible implementation, the plurality of second sub-channels are connected end to end in sequence, the first sub-channel is connected to the first of the plurality of second sub-channels, and the third sub-channel is connected to the last of the plurality of second sub-channels.

[0019] In a possible implementation, the second sub-channels are arranged in a one-to-one correspondence with the second cold plates, and the first liquid inlet and the first liquid outlet corresponding to each second cold plate are located at both ends of the second sub-channel corresponding to each second cold plate.

[0020] In a possible implementation, all the first liquid inlets are located on one side of the first cold plate along the third direction, and all the first liquid outlets are located on the other side of the first cold plate along the third direction.

[0021] In one possible implementation, among two adjacent second cold plates, the second liquid inlet of one second cold plate and the second liquid outlet of the other second cold plate are located on one side of the first cold plate along the third direction, and the second liquid outlet of one second cold plate and the second liquid inlet of the other second cold plate are located on the other side of the first cold plate along the third direction.

[0022] In a possible implementation, the second flow channel includes a fourth sub-flow channel, a plurality of fifth sub-flow channels, and a sixth sub-flow channel that are interconnected, and the plurality of fifth sub-flow channels are arranged along the first direction;

[0023] The fourth sub-flow channel is connected to the second liquid inlet, and the sixth sub-flow channel is connected to the second liquid outlet.

[0024] In a possible implementation, the fourth sub-channel and the sixth sub-channel both extend along the first direction, the fifth sub-channel extends along the third direction, and both ends of each fifth sub-channel are connected to the fourth sub-channel and the sixth sub-channel respectively.

[0025] In a possible implementation, several fifth sub-channels are connected end to end in sequence, the fourth sub-channel is connected to the first fifth sub-channel among the several fifth sub-channels, and the sixth sub-channel is connected to the last fifth sub-channel among the several fifth sub-channels.

[0026] In one possible implementation, there are two first cold plates, the two first cold plates are spaced apart along a first direction, several second cold plates are arranged between the two first cold plates, and the second flow channels of the several second cold plates are connected to the first flow channel of at least one of the two first cold plates.

[0027] In one possible implementation, the cooling assembly further includes a first water inlet pipe and a first water outlet pipe, the first water inlet pipe having a first inlet and two first outlets, the first inlet being configured to be connected to a coolant circulation device, and the two first outlets being connected to a total liquid inlet of the two first cold plates;

[0028] The first water outlet pipe has a second outlet and two second inlets. The second outlet is configured to be connected to a coolant circulation device, and the two second outlets are connected to the total liquid outlets of the two first cold plates.

[0029] In one possible implementation, the cooling assembly also includes two second water inlet pipes and two second water outlet pipes, the two second water inlet pipes are respectively constructed to connect the coolant circulation device and the total liquid inlet of the two first cold plates, and the two second water outlet pipes are respectively constructed to connect the coolant circulation device and the total liquid outlet of the two first cold plates.

[0030] In a possible implementation, the cooling assembly further includes a third cold plate, the first cold plate and the third cold plate are arranged at intervals, and the plurality of second cold plates are all arranged between the first cold plate and the third cold plate.

[0031] In a possible implementation, the first cold plate includes a first flow channel plate and a first temperature averaging plate, and the first flow channel plate and the first temperature averaging plate are stacked along a first direction;

[0032] The first liquid inlet and the first liquid outlet are located on the first temperature equalizing plate. The first flow channel plate has a first concave-convex structure. The first flow channel plate is connected to the first temperature equalizing plate to jointly define a first flow channel.

[0033] In a possible implementation, the second cold plate includes a second flow channel plate and a second temperature averaging plate, and the second flow channel plate and the second temperature averaging plate are stacked;

[0034] The second flow channel plate has a second concave-convex structure, and the second flow channel plate is connected to the second temperature uniform plate to jointly define a second flow channel, a first plug-in portion, and a second plug-in portion.

[0035] In a possible implementation, at least one second cold plate includes a third temperature averaging plate, the third temperature averaging plate, the second flow channel plate, and the second temperature averaging plate are stacked in sequence along the second direction, and the third temperature averaging plate is connected to the second flow channel plate.

[0036] In a second aspect, the present application provides a battery tray, comprising:

[0037] Border component;

[0038] The cooling assembly provided in the first aspect is connected to the frame assembly.

[0039] In one possible implementation, the frame assembly includes: two first side beams, the two first side beams are arranged on both sides of the first cold plate along the second direction, the two first side beams extend along the third direction, and the two first side beams are fixedly connected to the first cold plate.

[0040] In one possible implementation, the frame assembly also includes: two second side beams, the two second side beams are arranged on both sides of the first cold plate along the third direction, the two second side beams both extend along the second direction, and the two ends of the second side beams along the second direction are detachably connected to the first side beam.

[0041] In a possible implementation, a side of the second side beam facing the first cold plate is detachably connected to the first cold plate.

[0042] In a possible implementation, the battery tray further includes a peripheral support member, which is disposed at the outer peripheral edge of the first cold plate, the peripheral support member is fixedly connected to the first cold plate, and the second side beam is detachably connected to the peripheral support member.

[0043] In a possible implementation, the battery tray further includes a plurality of first connecting members, a plurality of first connecting holes are provided at both ends of the first side beam along the third direction, and a plurality of second connecting holes are provided at both ends of the second side beam along the second direction;

[0044] The first connecting member has a first external thread, the first connecting hole has a first internal thread matching the external thread, and the first connecting member passes through the corresponding second connecting hole to be threadedly connected with the corresponding first connecting hole.

[0045] In a possible implementation, the battery tray further includes a plurality of second connecting members, the second side beam is provided with a plurality of third connecting holes, and the peripheral support member is provided with a plurality of fourth connecting holes;

[0046] The second connecting member has a second external thread, the fourth connecting hole has a second internal thread matching the external thread, and the second connecting member passes through the corresponding third connecting hole to be threadedly connected to the corresponding fourth connecting hole.

[0047] In a possible implementation, the battery tray further includes a seal, which is disposed between the first side beam and the second side beam, and / or the seal is disposed between the peripheral support member and the second side beam.

[0048] In one possible implementation, the battery tray seal includes a first sealing portion and two second sealing portions, the first sealing portion extends along the second direction, and the first sealing portion is located between the peripheral support member and the second side beam;

[0049] The two second sealing portions are connected to two ends of the first sealing portion along the second direction. The second sealing portions extend along the first direction. The second sealing portions are located between the first side beam and the second side beam.

[0050] In a third aspect, the present application provides a battery pack, comprising:

[0051] Battery pack;

[0052] In the battery tray provided in the second aspect, the battery pack is accommodated in the battery tray.

[0053] In a possible implementation, the battery pack includes a plurality of battery cells, and the plurality of battery cells are arranged along the second direction;

[0054] At least one first cold plate is disposed on one side of the battery cell along the first direction and is thermally connected to each battery cell;

[0055] A plurality of second cold plates and a plurality of battery cells are alternately arranged along the second direction, and the battery cells are thermally connected to adjacent second cold plates.

[0056] In a possible implementation, a projection of the battery pack along the second direction is located within the frame assembly; and / or a projection of the battery pack along the third direction is located within the frame assembly.

[0057] In a fourth aspect, the present application provides an electrical device, comprising an electrical device and the battery pack provided in the third aspect above, wherein the battery pack is used to supply power to the electrical device.

[0058] The present application provides a cooling assembly, a battery tray, a battery pack, and an electrical device. The cooling assembly includes a first cold plate and a second cold plate. The first cold plate includes a first flow channel, a first liquid inlet, and a first liquid outlet. The second cold plate includes a second flow channel, a first plug-in portion, and a second plug-in portion. The first plug-in portion includes a first liquid inlet, and the second plug-in portion includes a second liquid outlet. Since the second cold plate can be docked with the first liquid inlet through the first plug-in portion, thereby connecting the second liquid inlet and the first liquid inlet, and docking with the first liquid outlet through the second plug-in portion, thereby connecting the second liquid outlet and the first liquid outlet, thereby achieving communication between the first flow channel and the second flow channel, thereby allowing the cold plate liquid to circulate in the first cold plate and in multiple second cold plates, so that the cooling assembly can cool the side surfaces of the battery cell along the first direction and the side surfaces of the battery cell along the second direction. There is no need for the first flow channel and each second flow channel to be connected through an additional intermediate pipe. In this way, the structure of the cooling assembly can be simplified, thereby reducing the cost of the cooling assembly and simplifying the assembly process of the cooling assembly.

[0059] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the cooling assembly, battery tray, battery pack and electrical equipment provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0061] Figure 1 A schematic diagram of the structure of the battery pack provided in an embodiment of the present application;

[0062] Figure 2 A schematic diagram of the structure of a battery tray provided in an embodiment of the present application;

[0063] Figure 3 Another structural schematic diagram of a battery tray provided in an embodiment of the present application;

[0064] Figure 4 A schematic diagram of the structure of the cooling assembly provided in an embodiment of the present application;

[0065] Figure 5 for Figure 4 Exploded diagram;

[0066] Figure 6 A schematic structural diagram of the first cold plate in the cooling assembly provided in an embodiment of the present application;

[0067] Figure 7 A schematic structural diagram of the second cold plate in the cooling assembly provided in an embodiment of the present application;

[0068] Figure 8 for Figure 7 Exploded diagram;

[0069] Figure 9 for Figure 8 Schematic diagram of the structure of the second flow channel plate;

[0070] Figure 10 for Figure 5 Schematic diagram of the structure of the first flow channel plate;

[0071] Figure 11 Another structural schematic diagram of the cooling assembly provided in an embodiment of the present application;

[0072] Figure 12 A schematic diagram of another structure of the cooling assembly provided in an embodiment of the present application;

[0073] Figure 13 This is a schematic structural diagram of the first cold plate, the first water inlet pipe, and the first water outlet pipe in the cooling assembly provided in an embodiment of the present application.

[0074] Description of reference numerals:

[0075] 10-Battery tray;

[0076] 100 - cooling assembly; 110 - first cold plate; 110a - first flow channel plate; 110b - first temperature plate; 111 - first flow channel; 1111 - first sub-flow channel; 1112 - second sub-flow channel; 1113 - third sub-flow channel; 112 - first liquid inlet; 113 - first liquid outlet; 114 - total liquid inlet; 115 - total liquid outlet; 120 - second cold plate; 120a - second flow channel plate; 120 b-second temperature averaging plate; 120c-third temperature averaging plate; 121-second flow channel; 1211-fourth sub-flow channel; 1212-fifth sub-flow channel; 1213-sixth sub-flow channel; 122-first plug-in connection; 1221-second liquid inlet; 123-second plug-in connection; 1231-second liquid outlet; 130-first water inlet pipe; 140-first water outlet pipe; 150-second water inlet pipe; 160-second water outlet pipe;

[0077] 200 - frame assembly; 210 - first side beam; 211 - first connection hole; 220 - second side beam; 221 - second connection hole; 222 - third connection hole;

[0078] 300- peripheral support member; 310- fourth connection hole;

[0079] 400-first connecting member;

[0080] 500- second connecting piece;

[0081] 600-seal; 610-first seal; 620-second seal;

[0082] 700-guard plate;

[0083] 800-sealing cover;

[0084] 20-battery pack. DETAILED DESCRIPTION

[0085] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of the present application are described in detail below in conjunction with the drawings.

[0086] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0087] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0088] The terms "first," "second," and "third" (if any) in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the application described herein can, for example, be implemented in orders other than those illustrated or described herein.

[0089] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or display that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or display.

[0090] In the related art, the battery pack mainly includes a pack body, a battery group and a cold plate assembly. The battery pack is housed in the pack body. The cold plate assembly includes a lower cold plate and multiple side cold plates. The battery pack includes multiple battery cells, and the multiple battery cells are arranged in the same direction. The lower cold plate is located at the bottom of the battery pack to cool the bottom of the battery pack. The side cold plate is arranged between two adjacent battery cells to cool the sides of the battery cells.

[0091] However, the aforementioned cold plate assembly is expensive and complex to install. This is because when multiple side cold plates are coupled to the coolant of the lower cold plate, each side cold plate needs to be connected to the lower cold plate via a corresponding intermediate pipe. This, in turn, requires the installation of intermediate pipes during assembly. These intermediate pipes increase the cost of the battery pack and take up space within the battery pack. When the coolant of multiple side cold plates and the lower cold plate circulates independently, each side cold plate needs to be connected to the coolant circulation device via a corresponding intermediate pipe, which also increases the cost of the battery and complicates the installation of the battery pack.

[0092] Based on this, the present application provides a cooling component, a battery tray, a battery pack and an electrical device. The cooling component is connected to the first cold plate through the first plug-in part by setting a first plug-in part and a second plug-in part on the side of the second cold plate facing the first cold plate, so that the second liquid inlet is connected to the first liquid inlet, and is connected to the first cold plate through the second plug-in part, so that the second liquid outlet is connected to the first liquid outlet. After the second flow channel is connected to the first flow channel, the coolant can circulate in the first cold plate and multiple second cold plates without connecting the first cold plate and the second cold plate through an intermediate pipe. This can simplify the assembly process of the cooling component and reduce the cost of the cooling component.

[0093] The specific implementation methods of the cooling assembly, battery tray, battery pack and electrical equipment provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0094] Reference Figure 1 As shown, an embodiment of the present application provides a battery pack, which may include a battery pack 20 and a cooling assembly 100. The battery pack 20 may include a plurality of arranged battery cells, and the cooling assembly 100 may cool the battery cells to ensure that the temperature of the battery cells is within a normal range.

[0095] Reference Figures 2 to 9 As shown, based on the above embodiments, an embodiment of the present application provides a cooling component 100, the cooling component 100 includes at least one first cold plate 110 and several second cold plates 120, the first cold plate 110 has a first flow channel 111, and one side of the first cold plate 110 along the first direction is provided with several first liquid inlets 112 and several first liquid outlets 113, and the several first liquid inlets 112 and the several first liquid outlets 113 are all connected to the first flow channel 111.

[0096] A plurality of second cold plates 120 are arranged along the second direction and extend along the third direction. The second cold plates 120 are arranged perpendicular to the first cold plate 110. A second flow channel 121 is defined within the second cold plate 120. A first plug-in portion 122 and a second plug-in portion 123 are defined on the side of the second cold plate 120 facing the first cold plate 110. The first plug-in portion 122 defines a second liquid inlet 1221, and the second plug-in portion 123 defines a second liquid outlet 1231. The first liquid inlet 112 and the second liquid outlet 1231 are both connected to the second flow channel 121. The first plug-in portion 122 is connected to the first liquid inlet 112 in a one-to-one correspondence, and the second plug-in portion 123 is connected to the first liquid outlet 113 in a one-to-one correspondence.

[0097] The first direction, the second direction, and the third direction are each angled relative to each other. For example, the first direction, the second direction, and the third direction may be perpendicular to each other. The first direction may refer to the X direction in the accompanying drawings, the second direction may refer to the Y direction in the accompanying drawings, and the third direction may refer to the Z direction in the accompanying drawings.

[0098] In this embodiment, the cooling component 100 is used to be connected to a coolant circulation device, which can provide coolant for the cooling component 100 and drive the coolant to circulate in the cooling component 100, thereby taking away the heat of the battery cell, thereby cooling the battery cell.

[0099] Since multiple battery cells are arranged along the second direction, the first cold plate 110 can be arranged on one or both sides of the battery cells along the first direction, thereby allowing the first cold plate 110 to cool the side surfaces of the battery cells along the first direction. The second cold plate 120 can be arranged between two adjacent battery cells, thereby allowing the second cold plate 120 to cool the side surfaces of the battery cells along the second direction. In this way, the synergistic effect of the first cold plate 110 and the multiple second cold plates 120 can effectively improve the heat dissipation effect of the cooling assembly 100.

[0100] It can be understood that multiple second cold plates 120 can be coupled to the first cold plate 110, so that the coolant flows from the first cold plate 110, then enters each second cold plate 120, and then flows out of the first cold plate 110. In this way, the first cold plate 110 is connected to the coolant circulation device, and each second cold plate 120 is connected to the first cold plate 110, without the need to connect each second cold plate 120 to the coolant circulation device, thereby simplifying the structure of the cooling assembly 100.

[0101] Specifically, the first cold plate 110 has a first flow channel 111, a first liquid inlet 112 and a first liquid outlet 113 that are interconnected, and the second cold plate 120 has a second flow channel 121, a second liquid inlet 1221 and a second liquid outlet 1231 that are interconnected. After the coolant flows into the first cold plate 110, it can flow in the first flow channel 111, thereby cooling the side of the battery cell along the first direction. The first liquid inlet 112 is used to communicate with the second liquid inlet 1221, thereby allowing the coolant in the first flow channel 111 to cool down. The coolant can flow into the second cold plate 120 from the first liquid inlet 112 and the second liquid inlet 1221 in sequence, and the coolant can flow in the second flow channel 121, thereby cooling the side of the battery cell along the second direction. After the coolant flows in the second flow channel 121, the coolant in the second flow channel 121 can flow out of the second liquid outlet 1231 and the first liquid outlet 113 in sequence, enter the first flow channel 111, and then flow out of the first cold plate 110. In this way, the coolant completes a cycle in the cooling assembly 100.

[0102] Because the second cold plate 120 is provided with a first plug-in portion 122 and a second plug-in portion 123 on one side along the first direction, each second cold plate 120 can insert its own first plug-in portion 122 into the corresponding first liquid inlet 112, thereby achieving docking between the second liquid inlet 1221 and the first liquid inlet 112. Each second cold plate 120 can insert its own second plug-in portion 123 into the corresponding first liquid outlet 113, thereby achieving docking between the second liquid outlet 1231 and the first liquid outlet 113. This eliminates the need for an intermediate pipe, thus reducing the cost of the cooling assembly 100 and simplifying the assembly process of the cooling assembly 100. In addition, when the cooling assembly 100 is applied to a battery pack, the space occupied by the cooling assembly 100 within the battery pack can be reduced, thereby improving the volumetric energy density of the battery pack.

[0103] The cooling assembly 100 of the embodiment of the present application includes a first cold plate 110 and a second cold plate 120. The first cold plate 110 includes a first flow channel 111, a first liquid inlet 112 and a first liquid outlet 113. The second cold plate 120 includes a second flow channel 121, a first plug-in portion 122 and a second plug-in portion 123. The first plug-in portion 122 includes a first liquid inlet 112, and the second plug-in portion 123 includes a second liquid outlet 1231. Since the second cold plate 120 can be docked with the first liquid inlet 112 through the first plug-in portion 122, the second liquid inlet 1221 and the first liquid inlet 112 are in a connected state, and the second plug-in portion 123 can be docked with the first liquid outlet 113, so that the second liquid outlet 1231 and the first liquid outlet 113 are in a connected state, thereby realizing the connection between the first flow channel 111 and the second flow channel 121, and the cold plate liquid circulates in the first cold plate 110 and multiple second cold plates 120, so that the cooling assembly 100 can cool the side of the battery cell along the first direction and the side of the battery cell along the second direction, and the first flow channel 111 and each second flow channel 121 do not need to be connected through an additional intermediate pipe. In this way, the structure of the cooling assembly 100 can be simplified, and the cost of the cooling assembly 100 can be reduced, and the assembly process of the cooling assembly 100 can be simplified.

[0104] In a possible implementation, the first plug-in portion 122 of each second cold plate 120 is welded or bonded to the first cold plate 110 , and the second plug-in portion 123 of each second cold plate 120 is welded or bonded to the first cold plate 110 .

[0105] That is, after the first plug-in portion 122 is inserted into the corresponding first liquid inlet 112 and the second plug-in portion 123 is inserted into the corresponding first liquid outlet 113, the first plug-in portion 122 and the first liquid inlet 112 can be welded, and the second plug-in portion 123 and the first liquid outlet 113 can be welded, thereby forming a first weld between the first plug-in portion 122 and the first liquid inlet 112, and a second weld between the second plug-in portion 123 and the second liquid inlet 1221, thereby fixing the plurality of second cold plates 120 to one side of the first cold plate 110. Alternatively, the first plug-in portion 122 and the first liquid inlet 112 can be bonded, and the second plug-in portion 123 and the first liquid outlet 113 can be bonded, thereby fixing the plurality of second cold plates 120 to one side of the first cold plate 110.

[0106] In this way, sealing between the first plug-in portion 122 and the first liquid inlet 112, as well as sealing between the second plug-in portion 123 and the first liquid outlet 113 can be achieved, and the rigidity and strength of the cooling assembly 100 can be improved, thereby preventing the second cold plate 120 from shaking relative to the first cold plate 110 when the battery pack shakes.

[0107] It can be understood that since multiple second cold plates 120 are welded to the first cold plate 110 to form the cooling assembly 100, when assembling the cooling assembly 100 and the battery cell, the cooling assembly 100 can be used as an assembly reference to insert each battery cell between two adjacent second cold plates 120 instead of inserting the second cold plate 120 between two adjacent battery cells, thereby avoiding safety problems caused by the second cold plate 120 being accidentally inserted into the battery cell.

[0108] Reference Figure 7 As shown, in some embodiments, the second liquid inlet 1221 and the second liquid outlet 1231 are located on both sides of the second cold plate 120 along the third direction.

[0109] That is to say, the first plug-in portion 122 and the second plug-in portion 123 are located on both sides of the second cold plate 120 along the third direction, the first plug-in portion 122 is welded to the first cold plate 110, and the second plug-in portion 123 is welded to the first cold plate 110. This is beneficial to improving the connection strength between the second cold plate 120 and the first cold plate 110, and improving the rigidity of the second cold plate 120.

[0110] It can be understood that the first liquid inlet 112 corresponding to the second liquid inlet 1221 and the first liquid outlet 113 corresponding to the second liquid outlet 1231 are also located on both sides of the first cold plate 110 along the third direction. This is conducive to optimizing the layout of multiple first liquid inlets 112 and multiple first liquid outlets 113, and allowing the coolant to flow fully in the first flow channel 111 and the second flow channel 121 to take away the heat of the battery cell.

[0111] Reference Figure 6 As shown, in one possible implementation, the first cold plate 110 is further provided with a main liquid inlet 114 and a main liquid outlet 115. The liquid inlet end of the first flow channel 111 is connected to the main liquid inlet 114, and the liquid outlet end of the first flow channel 111 is connected to the main liquid outlet 115. Both the main liquid inlet 114 and the main liquid outlet 115 are configured to be connected to a coolant circulation device.

[0112] In this way, the coolant in the coolant circulation device can enter the first flow channel 111 from the main liquid inlet 114, and enter the second flow channel 121 of each second cold plate 120 while circulating in the first flow channel 111, and finally flow out from the main liquid outlet 115 and return to the coolant circulation device. This reciprocating cycle allows the coolant circulation device to continuously provide the cooling component 100 with coolant at a lower temperature.

[0113] Among them, the total liquid inlet 114, the total liquid outlet 115, the first liquid inlet 112 and the first liquid outlet 113 can be located on the same side of the first cold plate 110 along the first direction, and the total liquid inlet 114 and the total liquid outlet 115 can be located on the same side of the first cold plate 110 along the second direction, so as to facilitate the connection of the first cold plate 110 to the coolant circulation device.

[0114] Reference Figure 6 and Figure 10 As shown, in some embodiments, the first flow channel 111 includes a first sub-flow channel 1111, a plurality of second sub-flow channels 1112, and a third sub-flow channel 1113 that are interconnected. At least one of the first sub-flow channel 1111 and the second sub-flow channel 1112 is connected to the first liquid inlet 112, and at least one of the third sub-flow channel 1113 and the second sub-flow channel 1112 is connected to the first liquid outlet 113.

[0115] That is to say, when the coolant circulates in the first sub-channel 1111, the second sub-channel 1112 and the third sub-channel 1113, the coolant in the first sub-channel 1111 can flow into the second channel 121 from the first liquid inlet 112 and the second liquid inlet 1221, or the coolant in the second sub-channel 1112 can flow into the second channel 121 from the first liquid inlet 112 and the second liquid inlet 1221.

[0116] After the coolant flows along the second flow channel 121 once, the coolant in the second flow channel 121 can return to the second sub-flow channel 1112 from the second liquid outlet 1231 and the first liquid inlet 112, or the coolant in the second flow channel 121 can return to the third sub-flow channel 1113 from the second liquid outlet 1231 and the first liquid inlet 112.

[0117] Reference Figure 10As shown, in some embodiments, a plurality of second sub-channels 1112 are arranged along the second direction, and the second sub-channels 1112 extend along the third direction. The first sub-channel 1111 and the third sub-channel 1113 both extend along the second direction, and each second sub-channel 1112 is connected to the first sub-channel 1111 and the third sub-channel 1113 at both ends.

[0118] In this way, when the coolant enters the first cold plate 110, the coolant will flow along the first sub-channel 1111 while being diverted to each second sub-channel 1112. After flowing along each second sub-channel 1112, the coolant will converge into the third sub-channel 1113. In this way, the coolant can complete the circulation flow within the first cold plate 110.

[0119] When the first liquid inlet 112 is connected to the first sub-channel 1111 and the first liquid outlet 113 is connected to the third sub-channel 1113, the coolant can flow along the first sub-channel 1111 while being diverted to the second liquid inlet 1221 of each second cold plate 120, thereby allowing the coolant in the first channel 111 to flow into each second channel 121, and the coolant in each second channel 121 can flow back to the third sub-channel 1113 through the corresponding second liquid outlet 1231. In this way, the coolant can complete the circulation flow within the second cold plate 120.

[0120] In some embodiments, the plurality of second sub-channels 1112 are connected end to end in sequence, the first sub-channel 1111 is connected to the first second sub-channel 1112 of the plurality of second sub-channels 1112, and the third sub-channel 1113 is connected to the last second sub-channel 1112 of the plurality of second sub-channels 1112.

[0121] That is, the first flow channel 111 may be arranged in a circuitous manner in the first cold plate 110 , and the coolant flows into the first flow channel 111 from one end and flows out from the other end of the first flow channel 111 .

[0122] In some embodiments, the second sub-channels 1112 are arranged in a one-to-one correspondence with the second cold plates 120 , and the first liquid inlet 112 corresponding to each second cold plate 120 and the first liquid outlet 113 corresponding to each second cold plate 120 are located at both ends of the second sub-channel 1112 corresponding to each second cold plate 120 .

[0123] Thus, when the coolant flows along the second sub-channel 1112, it can flow into the second channel 121 from the first liquid inlet 112 and the second liquid inlet 1221 located at one end of the second sub-channel 1112. After flowing along the second channel 121, the coolant can flow out of the second channel 121 from the second liquid outlet 1231 and the first liquid outlet 113 located at one end of the second sub-channel 1112 and return to the second sub-channel 1112. The coolant flows from each second sub-channel 1112 into the corresponding second cold plate 120, and the coolant in each second cold plate 120 returns to the corresponding second sub-channel 1112.

[0124] In some embodiments, the second liquid inlets 1221 of all second cold plates 120 are located on one side of the first cold plate 110 along the third direction, and the second liquid outlets 1231 of all second cold plates 120 are located on the other side of the first cold plate 110 along the third direction. In this way, the first sub-channel 1111 and the third sub-channel 1113 can extend along the second direction, and the plurality of second sub-channels 1112 can all extend along the third direction.

[0125] In this arrangement, a plurality of first liquid inlets 112 are arranged along the second direction on one side of the first cold plate 110 along the third direction, and a plurality of first liquid outlets 113 are arranged along the second direction on the other side of the first cold plate 110 along the third direction. The first liquid inlets 112 and the first liquid outlets 113 are arranged in a relatively neat arrangement, so that the first cold plate 110 can be opened to form a plurality of first liquid inlets 112 and a plurality of first liquid outlets 113.

[0126] It can be understood that when the second sub-channel 1112 is arranged in a circuitous manner, the coolant flows in the first channel 111 in a unidirectional manner. In order to prevent the coolant in the first channel 111 and the coolant in the second channel 121 from colliding with each other, in some embodiments, in two adjacent second cold plates 120, the second liquid inlet 1221 of one second cold plate 120 and the second liquid outlet 1231 of the other second cold plate 120 are located on one side of the first cold plate 110 along the third direction, and the second liquid outlet 1231 of one second cold plate 120 and the second liquid inlet 1221 of the other second cold plate 120 are located on the other side of the first cold plate 110 along the third direction.

[0127] That is, a plurality of first liquid inlets 112 and a plurality of first liquid outlets 113 may be provided on one side of the first cold plate 110 along the third direction, and the plurality of first liquid inlets 112 and the plurality of first liquid outlets 113 may be arranged alternately along the second direction. A plurality of first liquid inlets 112 and the plurality of first liquid outlets 113 may also be provided on the other side of the first cold plate 110 along the third direction, and the plurality of first liquid inlets 112 and the plurality of first liquid outlets 113 may be arranged alternately along the second direction. In this way, the coolant can flow into and out of the second flow channel 121 along the flow direction of the first flow channel 111.

[0128] Reference Figure 7 and Figure 9 As shown, in some embodiments, the second flow channel 121 includes a fourth sub-flow channel 1211, a plurality of fifth sub-flow channels 1212, and a sixth sub-flow channel 1213. The fourth sub-flow channel 1211 is connected to the second liquid inlet 1221, and the sixth sub-flow channel 1213 is connected to the second liquid outlet 1231.

[0129] In this way, the coolant flows from the second liquid inlet 1221 into the fourth sub-channel 1211 and flows along multiple fifth sub-channels 1212 so that the coolant can evenly cool the side of the battery cell. Afterwards, the coolant flows along the sixth sub-channel 1213 to the second liquid outlet 1231 and then flows out of the second channel 121.

[0130] Reference Figure 9 As shown, in some embodiments, the fourth sub-channel 1211 and the sixth sub-channel 1213 both extend along the first direction, the fifth sub-channel 1212 extends along the third direction, and several fifth sub-channels 1212 are arranged along the first direction, and the two ends of each fifth sub-channel 1212 are respectively connected to the fourth sub-channel 1211 and the sixth sub-channel 1213.

[0131] In this way, the coolant in the first channel 111 enters the fourth sub-channel 1211 from the second liquid inlet 1221, and flows along the third direction while flowing along the first direction to be diverted to each fifth sub-channel 1212, so that the coolant can flow fully in the second cold plate 120 to improve the cooling effect of the battery cell. The coolant in each fifth sub-channel 1212 is gathered into the sixth sub-channel 1213 and flows along the first direction toward the first cold plate 110, so that the coolant flows back to the first channel 111 from the second liquid outlet 1231 and the first liquid outlet 113.

[0132] In some embodiments, several fifth sub-channels 1212 are connected end to end in sequence, the fourth sub-channel 1211 is connected to the first fifth sub-channel 1212 among the several fifth sub-channels 1212, and the sixth sub-channel 1213 is connected to the last fifth sub-channel 1212 among the several fifth sub-channels 1212.

[0133] In this way, the second flow channel 121 can be arranged in a circuitous manner in the second cold plate 120, and the coolant flows in from one end of the second flow channel 121 and flows out from the other end of the second flow channel 121, thereby allowing the coolant to circulate fully in the second cold plate 120 to remove heat from the battery cells.

[0134] Reference Figure 11 and Figure 12 As shown, in a possible implementation, there are two first cold plates 110, the two first cold plates 110 are spaced apart along the first direction, a plurality of second cold plates 120 are arranged between the two first cold plates 110, and the second flow channels 121 of the plurality of second cold plates 120 are connected to the first flow channels 111 of at least one of the two first cold plates 110.

[0135] With such configuration, the two side surfaces of the battery cell along the first direction can be cooled by the corresponding first cold plates 110 , thereby improving the heat dissipation effect of the battery cell.

[0136] It can be understood that when two first cold plates 110 are provided, multiple second cold plates 120 can all be connected to one of the first cold plates 110, that is, the second flow channels 121 of multiple second cold plates 120 can all be connected to the first flow channels 111 of one of the first cold plates 110, and the second flow channels 121 of multiple second cold plates 120 are not connected to the first flow channels 111 of another first cold plate 110, so that the coolant flows through the first cold plate 110 to the multiple second cold plates 120, and the coolant of the multiple second cold plates 120 converges to the first cold plate 110.

[0137] When two first cold plates 110 are provided, the second flow channels 121 of multiple second cold plates 120 can all be connected to the first flow channels 111 of the two first cold plates 110, and the coolant provided by the coolant circulation device can enter the two first cold plates 110, and then enter the corresponding second cold plates 120 through the two first cold plates 110 respectively.

[0138] For example, N second cold plates 120 are arranged along the second direction, and both sides of these N second cold plates 120 along the first direction are connected to two first cold plates 110, or the first second cold plate 120 is connected to one of the first cold plates 110, the second second cold plate 120 is connected to the other first cold plate 110, until the Nth second cold plate 120. If N is an odd number, the Nth second cold plate 120 is connected to one of the first cold plates 110; if N is an even number, the Nth second cold plate 120 is connected to the other first cold plate 110. In this way, multiple second cold plates 120 are alternately connected to two first cold plates 110 respectively.

[0139] Reference Figure 11 and Figure 13As shown, in one possible implementation, the cooling assembly 100 further includes a first water inlet pipe 130 and a first water outlet pipe 140. The first water inlet pipe 130 has a first inlet and two first outlets. The first inlet is configured to be connected to a coolant circulation device, and the two first outlets are connected to a total liquid inlet 114 of the two first cold plates 110. The first water outlet pipe 140 has a second outlet and two second inlets. The second outlet is configured to be connected to a coolant circulation device, and the two second outlets are connected to a total liquid outlet 115 of the two first cold plates 110.

[0140] That is to say, when the cooling assembly 100 is provided with two first cold plates 110, the coolant circulation device can simultaneously transport coolant to the two first cold plates 110 through a first water inlet pipe 130. After the coolant circulates through the two first cold plates 110, it can return to the coolant circulation device from a first water outlet pipe 140. In this way, the structure of the cooling assembly 100 can be simplified to reduce costs and facilitate installation.

[0141] Reference Figure 12 As shown, in a possible implementation, the cooling assembly 100 also includes two second water inlet pipes 150 and two second water outlet pipes 160, the two second water inlet pipes 150 are respectively constructed to connect the coolant circulation device and the total liquid inlet 114 of the two first cold plates 110, and the two second water outlet pipes 160 are respectively constructed to connect the coolant circulation device and the total liquid outlet 115 of the two first cold plates 110.

[0142] In this way, the liquid circulation device can be connected to the two first cold plates 110 via different second water inlet pipes 150 and connected to the two first cold plates 110 via different second water outlet pipes 160, allowing the coolant in the two first cold plates 110 to flow independently of each other. This allows the coolant in the two first cold plates 110 to have different flow rates and initial temperatures, making it easier to flexibly set parameters such as the coolant flow rate of the two first cold plates 110 based on the conditions of the heating area, thereby improving the cooling effect of the cooling assembly 100.

[0143] In a possible implementation, the cooling assembly 100 further includes a third cold plate, the first cold plate 110 and the third cold plate are spaced apart, and the plurality of second cold plates 120 are disposed between the first cold plate 110 and the third cold plate.

[0144] It can be understood that the cooling assembly 100 can be provided with a third cold plate on the basis of the first cold plate 110 and the second cold plate 120, so that the first cold plate 110 cools one side of the battery cell in the first direction, the third cold plate cools the other side of the battery cell along the first direction, and the second cold plate 120 cools both sides of the battery cell along the second direction. The cooling liquid of the first cold plate 110 and the second cold plate 120 flows in a coupled manner, and the cooling liquid of the third cold plate can flow independently.

[0145] Reference Figure 3 and Figure 5 As shown, in a specific implementation, the first cold plate 110 includes a first flow channel plate 110a and a first temperature averaging plate 110b, and the first flow channel plate 110a and the first temperature averaging plate 110b are stacked along a first direction.

[0146] The first liquid inlet 112 and the first liquid outlet 113 are located on the first temperature averaging plate 110 b . The first flow channel plate 110 a has a first concave-convex structure. The first flow channel plate 110 a is connected to the first temperature averaging plate 110 b to define a first flow channel 111 .

[0147] In this way, when the first temperature averaging plate 110b is connected to the first flow channel plate 110a to form the first cold plate 110, the first temperature averaging plate 110b and the concave portion of the first concave-convex structure can form the first flow channel 111 together. The first temperature averaging plate 110b can make the side of the first cold plate 110 facing the battery cell relatively flat, thereby increasing the contact area between the first cold plate 110 and the battery cell, thereby improving the heat exchange effect of the first cold plate 110.

[0148] Reference Figure 8 and Figure 9 As shown, in a specific implementation, the second cold plate 120 includes a second flow channel plate 120a and a second temperature averaging plate 120b, which are stacked. The second flow channel plate 120a has a second concave-convex structure and is connected to the second temperature averaging plate 120b to jointly define a second flow channel 121, a first plug portion 122, and a second plug portion 123.

[0149] In this way, when the second temperature averaging plate 120b is connected to the second flow channel plate 120a to form the second cold plate 120, the second temperature averaging plate 120b and the concave part of the second concave-convex structure can form a second flow channel 121 together. The second temperature averaging plate 120b can make one side of the second cold plate 120 relatively flat, thereby increasing the contact area between the second cold plate 120 and the battery cell, thereby improving the heat exchange effect of the second cold plate 120.

[0150] Reference Figure 8 As shown, in one possible implementation, at least one second cold plate 120 includes a third temperature averaging plate 120c, and the third temperature averaging plate 120c, the second flow channel plate 120a and the second temperature averaging plate 120b are stacked in sequence along the second direction, and the third temperature averaging plate 120c is connected to the second flow channel plate 120a.

[0151] In this way, both sides of the second cold plate 120 along the second direction are relatively flat. When the second cold plate 120 is arranged between two adjacent battery cells, both sides of the second cold plate 120 are in contact with the two adjacent battery cells. Since the second temperature averaging plate 120b and the third temperature averaging plate 120c are arranged on both sides of the second cold plate 120, the contact area between the second cold plate 120 and the two adjacent battery cells can be increased, thereby improving the heat exchange effect of the second cold plate 120 and ensuring the consistency of the cooling power of the second cold plate 120 to the two adjacent battery cells.

[0152] Reference Figure 1 As shown, based on the above embodiments, an embodiment of the present application provides a battery pack, which may include a battery tray 10 and a battery pack 20 , and the battery pack 20 is accommodated in the battery tray 10 .

[0153] Reference Figures 1 to 3 As shown, based on the above embodiment, the embodiment of the present application further provides a battery tray 10, which may include a cooling assembly 100 and a frame assembly 200, wherein the cooling assembly 100 is connected to the frame assembly 200. The structure and working principle of the cooling assembly 100 have been described in detail in the above embodiment and will not be repeated here.

[0154] It should be noted that the cooling assembly 100 can serve as part of the battery tray 10. After the cooling assembly 100 is connected to the frame assembly 200, they can jointly define a cavity for accommodating battery cells. The first cold plate 110 can serve as the bottom supporting structure of the battery tray 10, or the first cold plate 110 can also serve as the top sealing structure of the battery tray 10. In this way, the structure of the battery tray 10 can be simplified, and the cooling assembly 100 can be used to support the battery cells and cool the battery cells, killing two birds with one stone.

[0155] Reference Figures 1 to 3 As shown, in a possible implementation, the frame assembly 200 includes two first side beams 210, and the two first side beams 210 are arranged on both sides of the first cold plate 110 along the second direction. The two first side beams 210 extend along the third direction, and the two first side beams 210 are fixedly connected to the first cold plate 110.

[0156] In this way, since the two first side beams are arranged on both sides of the battery pack 20 along the second direction, the two first side beams can be used to limit the position of the battery pack 20 in the second direction, and the first side beams can effectively protect the battery pack 20 to improve the stiffness performance of the battery pack.

[0157] During assembly, the first cold plate 110 may be used as a reference, the plurality of second cold plates 120 may be welded or bonded to the first cold plate 110 , and the two first side beams may be welded to the first cold plate 110 .

[0158] Reference Figure 1 and Figure 2 As shown, in a possible implementation, the frame assembly 200 also includes two second side beams 220, and the two second side beams 220 are arranged on both sides of the first cold plate 110 along the third direction. The two second side beams 220 both extend along the second direction, and the two ends of the second side beams 220 along the second direction are detachably connected to the first side beam 210.

[0159] In this way, the two second side beams can be used to limit the position of the battery pack 20 in the third direction, and after the two first side beams and the two second side beams are alternately connected, a quadrilateral frame assembly 200 can be formed, which is then arranged around the outer peripheral side of the battery pack 20 to protect the battery pack 20 on all sides, thereby preventing the battery pack from deforming when subjected to external force, thereby improving the rigidity of the battery pack.

[0160] It can be understood that since the second side beam 220 is detachably connected to the first side beam 210, when a problem occurs in a battery cell in the battery pack 20, the second side beam 220 can be removed from the first side beam 210, thereby facilitating the repair of the battery cell, thereby improving the maintainability of the battery pack.

[0161] In some embodiments, a side of the second side beam 220 facing the first cold plate 110 is detachably connected to the first cold plate 110 .

[0162] That is, the second side beam 220 is detachably connected to the first side beam 210 , and the second side beam 220 is also detachably connected to the first cold plate 110 , which can improve the rigidity of the battery pack and facilitate the removal of the second side beam 220 during maintenance.

[0163] Reference Figures 1 to 3 As shown, in a possible implementation, the battery tray 10 further includes a peripheral support member 300, which is arranged at the outer peripheral edge of the first cold plate 110, the peripheral support member 300 is fixedly connected to the first cold plate 110, and the second side beam 220 is detachably connected to the peripheral support member 300.

[0164] In this way, the second side beam 220 can be detachably connected to the first cold plate 110 via the peripheral support member 300, thereby improving the maintainability and rigidity of the battery pack. The peripheral support member 300 can be bonded or welded to the first cold plate 110 to ensure that the peripheral support member 300 is fixedly connected to the first cold plate 110.

[0165] Reference Figures 1 to 3As shown, in one possible implementation, the battery tray 10 further includes a plurality of first connecting members 400. A plurality of first connecting holes 211 are provided at both ends of the first side beam 210 along the third direction, and a plurality of second connecting holes 221 are provided at both ends of the second side beam 220 along the second direction. The first connecting members 400 have first external threads, and the first connecting holes 211 have first internal threads that match the external threads. The first connecting members 400 pass through the corresponding second connecting holes 221 to be threadedly connected to the corresponding first connecting holes 211.

[0166] Such a setting can achieve a detachable connection between the second side beam 220 and the first side beam 210. The connection strength between the second side beam 220 and the first side beam 210 is relatively high, and it is also convenient to remove the second side beam 220 from the first side beam 210, thereby facilitating the inspection of the battery pack 20.

[0167] Illustratively, the first connecting member 400 may be a screw.

[0168] Reference Figures 1 to 3 As shown, in one possible implementation, the battery tray 10 further includes a plurality of second connecting members 500, the second side beam 220 is provided with a plurality of third connecting holes 222, and the peripheral support member 300 is provided with a plurality of fourth connecting holes 310. The second connecting members 500 have second external threads, and the fourth connecting holes 310 have second internal threads that match the external threads. The second connecting members 500 pass through the corresponding third connecting holes 222 to be threadedly connected to the corresponding fourth connecting holes 310.

[0169] This arrangement enables a detachable connection between the second side beam 220 and the peripheral support member 300 , thereby enabling a detachable connection between the second side beam 220 and the first cold plate 110 , so as to facilitate separation of the second side beam 220 from the first cold plate 110 , thereby facilitating maintenance of the battery pack 20 .

[0170] Illustratively, the second connecting member 500 may be a screw.

[0171] Reference Figure 1 and Figure 2 As shown, in one possible implementation, the battery tray 10 further includes a seal 600 , which is disposed between the first side beam 210 and the second side beam 220 , and / or the seal 600 is disposed between the peripheral support member 300 and the second side beam 220 .

[0172] In this way, the seal 600 can effectively improve the sealing and maintainability of the battery pack. By adjusting the screw-in depth of the first connecting member 400 and the second connecting member 500, the compression amount of the seal 600 can be adjusted to improve the sealing of the seal 600, thereby effectively preventing liquid from entering the battery pack from the gap between the first side beam 210 and the second side beam 220, and preventing liquid from entering the battery pack from the gap between the outer support member 300 and the second side beam 220.

[0173] Reference Figure 1 and Figure 2 As shown, in some embodiments, the seal 600 of the battery tray 10 includes a first sealing portion 610 and two second sealing portions 620. The first sealing portion 610 extends along the second direction and is located between the peripheral support member 300 and the second side beam 220. The two second sealing portions 620 are connected to both ends of the first sealing portion 610 along the second direction. The second sealing portion 620 extends along the first direction and is located between the first side beam 210 and the second side beam 220.

[0174] In this way, the first sealing portion 610 can seal the gap between the peripheral support member 300 and the second side beam 220 to prevent external liquid from entering the battery pack through the gap, and the second sealing portion 620 can seal the gap between the first side beam 210 and the second side beam 220 to prevent external liquid from entering the battery pack through the gap.

[0175] Reference Figure 1 As shown, in some embodiments, the battery tray 10 may further include a guard plate 700 . The guard plate 700 is disposed on the bottom surface of the battery tray 10 , and the guard plate 700 may be connected to the peripheral support member 300 .

[0176] Reference Figure 1 As shown, in some embodiments, the battery tray 10 may further include a sealing cover 800, and the sealing cover 800 and the guard plate 700 are arranged on both sides of the frame assembly 200 along the first direction, and the sealing cover 800 is connected to the frame assembly 200 to close the top opening of the frame assembly 200.

[0177] In one possible implementation, the battery pack 20 includes a plurality of battery cells arranged along a second direction. At least one first cold plate 110 is disposed on one side of the battery cells along the first direction and is thermally connected to each battery cell. A plurality of second cold plates 120 and the battery cells are alternately disposed along the second direction, and the battery cells are thermally connected to adjacent second cold plates 120.

[0178] In this way, the first cold plate 110 can cool one or both sides of each battery cell along the first direction, and the second cold plate 120 can cool one or both sides of each battery cell along the second direction, achieving a better cooling effect for the battery pack. Thermally conductive adhesive can be placed between each battery cell and the first cold plate 110, and between each battery cell and the corresponding second cold plate 120.

[0179] In some embodiments, the projection of the battery pack 20 along the second direction is located within the frame assembly 200, and the projection of the battery pack 20 along the third direction is located within the frame assembly 200. That is, in the first direction, the side of the frame assembly 200 exceeds the side of the battery pack 20. In this way, the frame assembly 200 is taller in the first direction, the overall strength and rigidity of the battery pack are higher, and the frame assembly 200 is removable, making the battery pack easier to maintain.

[0180] Based on the above embodiments, the present application also provides an electrical device, which includes an electrical device and a battery pack, wherein the battery pack is used to power the electrical device. The structure and operating principle of the battery pack have been described in detail in the above embodiments and will not be repeated here.

[0181] For example, the electrical equipment may be a vehicle, the electrical device may be an electric motor, and the battery pack may provide electrical energy to the electric motor, thereby driving the vehicle. The vehicle may be a pure electric vehicle, an extended-range electric vehicle, a hybrid electric vehicle, or any other vehicle equipped with a battery pack, which is not limited in this embodiment.

[0182] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cooling assembly, characterized in that: include: At least one first cold plate (110), the first cold plate (110) having a first flow channel (111) therein, a plurality of first liquid inlets (112) and a plurality of first liquid outlets (113) being provided on one side of the first cold plate (110) along a first direction, the plurality of first liquid inlets (112) and the plurality of first liquid outlets (113) all being in communication with the first flow channel (111); A plurality of second cold plates (120), wherein the plurality of second cold plates (120) are arranged along a second direction, the second cold plates (120) extend along a third direction, a second flow channel (121) is provided in the second cold plate (120), a first plug-in portion (122) and a second plug-in portion (123) are provided on a side of the second cold plate (120) facing the first cold plate (110), the first plug-in portion (122) is provided with a second liquid inlet (1221), the second plug-in portion (123) is provided with a second liquid outlet (1231), and the first liquid inlet (112) and the second liquid outlet (1231) are both in communication with the second flow channel (121); The first plug-in portion (122) is connected to the first liquid inlet (112) in a one-to-one correspondence, and the second plug-in portion (123) is connected to the first liquid outlet (113) in a one-to-one correspondence; The first direction, the second direction and the third direction are arranged at angles to each other.

2. The cooling assembly according to claim 1, wherein: The first plug-in portion (122) of each second cold plate (120) is welded or bonded to the first cold plate (110), and the second plug-in portion (123) of each second cold plate (120) is welded or bonded to the first cold plate (110).

3. The cooling assembly according to claim 1, wherein: The second liquid inlet (1221) and the second liquid outlet (1231) are located on both sides of the second cold plate (120) along the third direction.

4. The cooling assembly according to any one of claims 1 to 3, characterized in that: The first cold plate (110) is further provided with a total liquid inlet (114) and a total liquid outlet (115); the liquid inlet end of the first flow channel (111) is connected to the total liquid inlet (114), and the liquid outlet end of the first flow channel (111) is connected to the total liquid outlet (115); The total liquid inlet (114) and the total liquid outlet (115) are both configured to be connected to a cooling liquid circulation device.

5. The cooling assembly according to any one of claims 1 to 3, characterized in that: The first flow channel (111) comprises a first sub-flow channel (1111), a plurality of second sub-flow channels (1112) and a third sub-flow channel (1113) that are interconnected; At least one of the first sub-channel (1111) and the second sub-channel (1112) is connected to the first liquid inlet (112), and at least one of the third sub-channel (1113) and the second sub-channel (1112) is connected to the first liquid outlet (113).

6. The cooling assembly according to claim 5, characterized in that A plurality of the second sub-flow channels (1112) are arranged along the second direction, and the second sub-flow channels (1112) extend along the third direction; The first sub-channel (1111) and the third sub-channel (1113) both extend along the second direction, and both ends of each second sub-channel (1112) are connected to the first sub-channel (1111) and the third sub-channel (1113) respectively.

7. The cooling assembly according to claim 5, characterized in that Several second sub-flow channels (1112) are connected end to end in sequence, the first sub-flow channel (1111) is connected to the first second sub-flow channel (1112) of the several second sub-flow channels (1112), and the third sub-flow channel (1113) is connected to the last second sub-flow channel (1112) of the several second sub-flow channels (1112).

8. The cooling assembly according to claim 6 or 7, characterized in that: The second sub-channels (1112) are arranged in a one-to-one correspondence with the second cold plates (120), and the first liquid inlet (112) corresponding to each second cold plate (120) and the first liquid outlet (113) corresponding to each second cold plate (120) are located at both ends of the second sub-channel (1112) corresponding to each second cold plate (120).

9. The cooling assembly according to claim 8, wherein: All the first liquid inlets (112) are located on one side of the first cold plate (110) along the third direction, and all the second liquid outlets (113) are located on the other side of the first cold plate (110) along the third direction.

10. The cooling assembly according to claim 8, wherein Among two adjacent second cold plates (120), the second liquid inlet (1221) of one second cold plate (120) and the second liquid outlet (1231) of the other second cold plate (120) are located on one side of the first cold plate (110) along the third direction, and the second liquid outlet (1231) of one second cold plate (120) and the second liquid inlet (1221) of the other second cold plate (120) are located on the other side of the first cold plate (110) along the third direction.

11. The cooling assembly according to any one of claims 1 to 3, characterized in that: The second flow channel (121) comprises a fourth sub-flow channel (1211), a plurality of fifth sub-flow channels (1212) and a sixth sub-flow channel (1213) which are interconnected; The fourth sub-channel (1211) is connected to the second liquid inlet (1221), and the sixth sub-channel (1213) is connected to the second liquid outlet (1231).

12. The cooling assembly according to claim 11, wherein: The fourth sub-channel (1211) and the sixth sub-channel (1213) both extend along the first direction, the fifth sub-channel (1212) extends along the third direction, and a plurality of the fifth sub-channels (1212) are arranged along the first direction, with both ends of each of the fifth sub-channels (1212) being connected to the fourth sub-channel (1211) and the sixth sub-channel (1213) respectively.

13. The cooling assembly according to claim 11, wherein The plurality of fifth sub-channels (1212) are connected end to end in sequence, the fourth sub-channel (1211) is connected to the first fifth sub-channel (1212) among the plurality of fifth sub-channels (1212), and the sixth sub-channel (1213) is connected to the last fifth sub-channel (1212) among the plurality of fifth sub-channels (1212).

14. The cooling assembly according to claim 4, wherein: There are two first cold plates (110), the two first cold plates (110) are spaced apart along a first direction, a plurality of second cold plates (120) are arranged between the two first cold plates (110), and the second flow channels (121) of the plurality of second cold plates (120) are connected to the first flow channel (111) of at least one of the two first cold plates (110).

15. The cooling assembly according to claim 14, wherein: It also includes a first water inlet pipe (130) and a first water outlet pipe (140), wherein the first water inlet pipe (130) has a first inlet and two first outlets, the first inlet is configured to be connected to the coolant circulation device, and the two first outlets are connected to the total liquid inlets (114) of the two first cold plates (110); The first water outlet pipe (140) has a second outlet and two second inlets, the second outlet is configured to be connected to the coolant circulation device, and the two second outlets are connected to the total liquid outlets (115) of the two first cold plates (110).

16. The cooling assembly according to claim 14, wherein: The cooling device further comprises two second water inlet pipes (150) and two second water outlet pipes (160), wherein the two second water inlet pipes (150) are respectively configured to connect the cooling liquid circulation device and the total liquid inlet (114) of the two first cold plates (110), and the two second water outlet pipes (160) are respectively configured to connect the cooling liquid circulation device and the total liquid outlet (115) of the two first cold plates (110).

17. The cooling assembly according to any one of claims 1 to 3, characterized in that: It also includes a third cold plate, wherein the first cold plate (110) and the third cold plate are arranged at intervals along the first direction, and a plurality of the second cold plates (120) are arranged between the first cold plate (110) and the third cold plate.

18. The cooling assembly according to any one of claims 1 to 3, characterized in that: The first cold plate (110) comprises a first flow channel plate (110a) and a first temperature averaging plate (110b), wherein the first flow channel plate (110a) and the first temperature averaging plate (110b) are stacked along the first direction; The first liquid inlet (112) and the first liquid outlet (113) are located on the first temperature averaging plate (110b); the first flow channel plate (110a) has a first concave-convex structure; the first flow channel plate (110a) is connected to the first temperature averaging plate (110b) to jointly define the first flow channel (111).

19. The cooling assembly according to any one of claims 1 to 3, characterized in that: The second cold plate (120) comprises a second flow channel plate (120a) and a second temperature averaging plate (120b), and the second flow channel plate (120a) and the second temperature averaging plate (120b) are stacked; The second flow channel plate (120a) has a second concave-convex structure, and the second flow channel plate (120a) is connected to the second temperature uniform plate (120b) to jointly define the second flow channel (121), the first plug-in portion (122), and the second plug-in portion (123).

20. The cooling assembly according to claim 19, wherein At least one of the second cold plates (120) includes a third temperature averaging plate (120c), wherein the third temperature averaging plate (120c), the second flow channel plate (120a) and the second temperature averaging plate (120b) are stacked in sequence along the second direction, and the third temperature averaging plate (120c) is connected to the second flow channel plate (120a).

21. A battery tray, characterized in that: include: FrameComponent(200); The cooling assembly (100) according to any one of claims 1 to 20, wherein the cooling assembly (100) is connected to the frame assembly (200).

22. The battery tray according to claim 21, wherein: The frame assembly (200) comprises: two first side beams (210), the two first side beams (210) being arranged on both sides of the first cold plate (110) along the second direction, the two first side beams (210) both extending along the third direction, and the two first side beams (210) both being fixedly connected to the first cold plate (110).

23. The battery tray according to claim 22, characterized in that: The frame assembly (200) further comprises: two second side beams (220), the two second side beams (220) being arranged on both sides of the first cold plate (110) along the third direction, the two second side beams (220) both extending along the second direction, and both ends of the second side beams (220) along the second direction being detachably connected to the first side beam (210).

24. The battery tray according to claim 23, wherein: A side of the second side beam (220) facing the first cold plate (110) is detachably connected to the first cold plate (110).

25. The battery tray according to claim 23, characterized in that The invention also includes a peripheral support member (300), wherein the peripheral support member (300) is arranged on the outer peripheral edge of the first cold plate (110), the peripheral support member (300) is fixedly connected to the first cold plate (110), and the second side beam (220) is detachably connected to the peripheral support member (300).

26. The battery tray according to claim 25, characterized in that It also includes a plurality of first connecting members (400), a plurality of first connecting holes (211) being provided at both ends of the first side beam (210) along the third direction, and a plurality of second connecting holes (221) being provided at both ends of the second side beam (220) along the second direction; The first connecting member (400) has a first external thread, the first connecting hole (211) has a first internal thread matching the external thread, and the first connecting member (400) passes through the corresponding second connecting hole (221) to be threadedly connected to the corresponding first connecting hole (211).

27. The battery tray according to claim 26, characterized in that It also includes a plurality of second connecting members (500), the second side beam (220) is provided with a plurality of third connecting holes (222), and the peripheral support member (300) is provided with a plurality of fourth connecting holes (310); The second connecting member (500) has a second external thread, the fourth connecting hole (310) has a second internal thread matching the external thread, and the second connecting member (500) passes through the corresponding third connecting hole (222) to be threadedly connected to the corresponding fourth connecting hole (310).

28. The battery tray according to claim 25, characterized in that The invention also includes a sealing member (600), wherein the sealing member (600) is arranged between the first side beam (210) and the second side beam (220), and / or the sealing member (600) is arranged between the peripheral support member (300) and the second side beam (220).

29. The battery tray according to claim 28, characterized in that The sealing member (600) includes a first sealing portion (610) and two second sealing portions (620), wherein the first sealing portion (610) extends along a second direction, and the first sealing portion (610) is located between the peripheral support member (300) and the second side beam (220); Two second sealing portions (620) are connected to both ends of the first sealing portion (610) along the second direction, the second sealing portion (620) extends along the first direction, and the second sealing portion (620) is located between the first side beam (210) and the second side beam (220).

30. A battery pack, characterized in that: include; Battery pack (20); The battery tray (10) according to any one of claims 21 to 29, wherein the battery pack (20) is accommodated in the battery tray (10).

31. The battery pack according to claim 30, characterized in that: The battery pack (20) includes a plurality of battery cells, and the plurality of battery cells are arranged along the second direction; At least one first cold plate (110) is arranged on one side of the battery core along a first direction and is thermally connected to each of the battery cores; A plurality of second cold plates (120) and a plurality of the battery cells are alternately arranged along a second direction, and the battery cells are thermally connected to the adjacently arranged second cold plates (120).

32. The battery pack according to claim 30, characterized in that: The projection of the battery pack (20) along the second direction is located within the frame assembly (200); and / or the projection of the battery pack along the third direction is located within the frame assembly (200).

33. An electrical device, characterized in that: It comprises an electrical device and a battery pack as described in any one of claims 30-32, wherein the battery pack is used to power the electrical device.

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