Connection joint, thermal management system, battery pack and electric equipment

Abstract

The embodiment of the utility model provides a connection joint, a thermal management system, a battery pack and electric equipment, and relates to the technical field of automobile parts. The connector comprises a connector body, a liquid inlet channel and a liquid outlet channel are arranged in the connector body, one end of the liquid inlet channel is communicated with a refrigerant liquid supply end of the thermal management system, the other end of the liquid inlet channel is communicated with a liquid inlet of a cold plate of the thermal management system, and one end of the liquid outlet channel is communicated with a refrigerant circulating end of the thermal management system. One of the plurality of liquid outlets of the cold plate is communicated with the other end of the liquid outlet channel; and the number of the connecting pipes is at least one, one end of each connecting pipe communicates with the liquid outlet channel, and the other ends of the multiple connecting pipes correspond to and communicate with the other multiple liquid outlets of the cold plate in a one-to-one mode. According to the connector, the thermal management system, the battery pack and the electric equipment, the structural complexity of the connector is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessories, and in particular to a connecting joint, a thermal management system, a battery pack and an electric device. BACKGROUND

[0002] The thermal management system of the electric vehicle includes a cold plate, which takes away the heat generated in the battery working process through the circulation of the refrigerant, prevents the battery from overheating, and thus prolongs the battery life.

[0003] In the related art, the cold plate is internally designed with a refrigerant flow channel, and the connecting joint is provided on the cold plate and has an inlet passage and an outlet passage inside. The inlet passage is communicated between the inlet of the refrigerant flow channel and the refrigerant supply end, and the outlet passage is communicated between the outlet of the refrigerant flow channel and the refrigerant circulation end. The refrigerant circulates along the refrigerant supply end, the inlet passage, the inlet, the refrigerant flow channel, the outlet, and the refrigerant circulation end in sequence, so as to dissipate heat from the battery through the cold plate.

[0004] However, when the cold plate has multiple parallel refrigerant flow channels inside, multiple outlet passages need to be provided in the connecting joint. One end of the multiple outlet passages needs to be communicated with the outlets of the multiple refrigerant flow channels through multiple connecting pipelines, and the other end of the multiple outlet passages also needs to be communicated with the refrigerant circulation end through multiple communication pipelines, which increases the structural complexity of the connecting joint. Utility model content

[0005] The embodiments of the present application provide a connecting joint, a thermal management system, a battery pack and an electric device to solve the technical problem of increasing the structural complexity of the connecting joint by using multiple communication pipelines in the related art.

[0006] In a first aspect, the embodiments of the present application provide a connecting joint, comprising:

[0007] A joint body is provided with an inlet passage and an outlet passage inside. One end of the inlet passage is communicated with the refrigerant supply end of the thermal management system, and the other end is communicated with the inlet of the cold plate of the thermal management system. One end of the outlet passage is communicated with the refrigerant circulation end of the thermal management system, and the other end of the outlet passage is communicated with one of the multiple outlets of the cold plate.

[0008] At least one connecting pipe is provided. One end of the connecting pipe is communicated with the outlet passage, and the other end of the multiple connecting pipes is one-to-one corresponding and communicated with the remaining multiple outlets of the cold plate.

[0009] In some embodiments, a communication piece is provided on the joint body, the communication piece is communicated with the outlet passage, and one end of the connecting pipe is inserted into the communication piece and communicated with the communication piece.

[0010] In some embodiments, the connecting pipe comprises a first connecting portion, a second connecting portion, and an arc-shaped portion, two ends of the arc-shaped portion are in communication with the first connecting portion and the second connecting portion respectively, the first connecting portion is in communication with the liquid outlet channel, and the second connecting portion is in communication with the liquid outlet.

[0011] In some embodiments, a mounting space for accommodating the joint body is formed between the first connecting portion, the second connecting portion, and the arc-shaped portion.

[0012] In some embodiments, a mounting sleeve is sleeved on the connecting pipe, and the mounting sleeve is used to connect with the cold plate.

[0013] In some embodiments, the joint body comprises a liquid inlet portion, a liquid outlet portion, and an external connecting portion, the external connecting portion is connected between the liquid inlet portion and the liquid outlet portion, the liquid inlet channel is arranged on the liquid inlet portion, the liquid outlet channel is arranged on the liquid outlet portion, and the external connecting portion is used to connect with an external pipeline.

[0014] In some embodiments, a fixing protrusion is arranged on at least one of the connecting pipe, the liquid inlet portion, the liquid outlet portion, and the connecting pipe, the fixing protrusion on the liquid inlet portion is used to be inserted into the liquid inlet port to communicate the liquid inlet channel with the liquid inlet port, and the fixing protrusions on the connecting pipe and the liquid outlet portion are used to be inserted into the corresponding liquid outlet port to communicate the connecting pipe or the liquid outlet channel with the liquid outlet port.

[0015] In some embodiments, the length of the fixing protrusion on the liquid inlet portion is less than or equal to the depth of the liquid inlet port, and the length of the fixing protrusions on the connecting pipe and the liquid outlet portion is less than or equal to the depth of the liquid outlet port.

[0016] In some embodiments, an inclined surface is arranged on at least one of the connecting pipe, the liquid inlet portion, and the liquid outlet portion, the inclined surface is arranged at the end of the liquid inlet portion and the liquid outlet portion close to the cold plate, and a containing space for containing a welding wire is formed between the inclined surface and the cold plate.

[0017] In some embodiments, the liquid inlet channel comprises a first communication portion and a second communication portion, the first communication portion is in communication with the refrigerant liquid supply end, one end of the second communication portion is in communication with the first communication portion, and the other end is in communication with the liquid inlet port, the first communication portion is arranged parallel to the cold plate, and the second communication portion is arranged perpendicular to the cold plate.

[0018] In some embodiments, the liquid outlet channel comprises a third communication part and a fourth communication part, the third communication part is in communication with the refrigerant circulation end, one end of the fourth communication part is in communication with the third communication part, and the other end is in communication with the liquid outlet, the third communication part is arranged in parallel with the first communication part, and the fourth communication part is arranged in parallel with the second communication part.

[0019] In a second aspect, the embodiments of the present application provide a thermal management system, comprising a cold plate and the connecting joint arranged on the cold plate.

[0020] In a third aspect, the embodiments of the present application provide a battery pack, comprising a frame and the thermal management system arranged on the frame.

[0021] In a fourth aspect, the embodiments of the present application provide a power consumption device, comprising a battery and the battery pack arranged on the battery.

[0022] The connecting joint, the thermal management system, the battery pack and the power consumption device provided by the embodiments of the present application, the connecting joint provided by the present application, the refrigerant can enter the liquid inlet channel along the refrigerant liquid supply end, enter the liquid inlet of the cold plate through the liquid inlet channel, at this time the refrigerant can be divided into multiple paths and flow into multiple refrigerant flow channels, the refrigerant in the refrigerant flow channel can enter the connecting pipe and the liquid outlet channel along the multiple liquid outlets of the cold plate after being cooled by the battery, by arranging the connecting pipe, multiple liquid outlet channels do not need to be arranged in the joint body, so that the volume of the joint body does not need to be set larger, the cost of production and manufacturing of the joint body is reduced, thereby reducing the structural complexity of the connecting joint; since the end of the connecting pipe away from the liquid outlet is in communication with the liquid outlet channel, the refrigerant entering the connecting pipe can flow into the liquid outlet channel and converge with the refrigerant in the liquid outlet channel, so that only one connecting pipeline needs to be arranged between the liquid outlet channel and the refrigerant circulation end, the refrigerant in multiple refrigerant flow channels can enter the refrigerant circulation end along the same connecting pipeline, the number of connecting pipelines between the liquid outlet channel and the refrigerant circulation end is reduced, thereby reducing the structural complexity of the refrigerant transported from the joint body to the refrigerant circulation end, and further reducing the structural complexity of the connecting joint. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0024] Figure 1 The connecting joint and the cold plate provided by the present application are shown in the exploded structural schematic view.

[0025] Figure 2 The structural schematic view of the connecting joint provided by the present application is shown.

[0026] Figure 3The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures.

[0027] Figure 4 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures. Figure 2 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures.

[0028] Figure 5 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures. Figure 2 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures.

[0029] Figure 6 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures. Figure 2 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures.

[0030] Figure 7 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures. Figure 2 The structure schematic diagram of the connection joint and the cold plate assembly state provided in the present application is shown in the following figures.

[0031] Explanation of reference signs:

[0032] 100, joint body; 110, liquid inlet channel; 111, first communication part; 112, second communication part; 120, liquid outlet channel; 121, third communication part; 122, fourth communication part; 130, communication piece;

[0033] 140, liquid inlet part; 150, liquid outlet part; 160, external connection part; 170, fixing boss; 180, first connecting section; 190, second connecting section; 191, inclined surface; 192, accommodating space;

[0034] 200, connecting pipe; 210, first connecting part; 220, second connecting part; 230, arc-shaped part; 240, mounting space; 250, mounting sleeve;

[0035] 300, cold plate; 310, liquid inlet; 320, liquid outlet.

[0036] The specific embodiments of the present application have been shown in the above figures, and will be described in more detail hereinafter. These figures and the written description are not intended to limit the scope of the present application in any way, but to illustrate the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0037] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements or similar elements, unless otherwise described. The following exemplary embodiments described in the following examples are not representative of all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0038] In the related art, a cold plate is internally provided with a refrigerant flow channel, and a connecting joint is arranged on the cold plate, the connecting joint is internally provided with an inlet passage and an outlet passage, the inlet passage is communicated between a refrigerant inlet of the refrigerant flow channel and a refrigerant supply end, and the outlet passage is communicated between a refrigerant outlet of the refrigerant flow channel and a refrigerant circulation end, and the refrigerant sequentially circulates along the refrigerant supply end, the inlet passage, the refrigerant inlet, the refrigerant flow channel, the refrigerant outlet and the refrigerant circulation end, so as to dissipate heat from the battery through the cold plate.

[0039] However, when the cold plate is internally provided with multiple parallel refrigerant flow channels, multiple outlet passages need to be arranged in the connecting joint, and when multiple outlet passages are arranged in the connecting joint, the connecting joint needs to have a larger volume to accommodate the multiple outlet passages, and one end of the multiple outlet passages needs to be communicated with the multiple refrigerant outlets of the multiple refrigerant flow channels through multiple connecting pipelines, and the other end of the multiple outlet passages also needs to be communicated with the refrigerant circulation end through multiple communication pipelines, so that the number of connecting pipelines is large, and the structural complexity of the connecting joint is increased.

[0040] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described again in some examples. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0041] In combination with Figures 1 to 3 A connecting joint comprises:

[0042] A joint body 100 is internally provided with an inlet passage 110 and an outlet passage 120, one end of the inlet passage 110 is communicated with a refrigerant supply end of a thermal management system, and the other end is communicated with a refrigerant inlet 310 of a cold plate 300 of the thermal management system, one end of the outlet passage 120 is communicated with a refrigerant circulation end of the thermal management system, and the other end of the outlet passage 120 is communicated with one of multiple refrigerant outlets 320 of the cold plate 300;

[0043] A connecting pipeline 200 is provided with at least one, one end of the connecting pipeline 200 is communicated with the outlet passage 120, and the other end of the multiple connecting pipelines 200 is one-to-one corresponding and communicated with the remaining multiple refrigerant outlets 320 of the cold plate 300.

[0044] In the embodiment, one connecting pipe 200 is arranged; one liquid inlet 310 and two liquid outlets 320 are arranged on the cold plate 300, the two liquid outlets 320 are arranged on the two sides of the liquid inlet 310 respectively, the cold plate 300 has two refrigerant flow channels, the liquid inlet 310 is in communication with the input ends of the two refrigerant flow channels, the two liquid outlets 320 are in communication with the output ends of the two refrigerant flow channels respectively, the two refrigerant flow channels are arranged in parallel, the connecting pipe 200 is in communication with one of the two liquid outlets 320, and the liquid outlet channel 120 is in communication with the other of the two liquid outlets 320.

[0045] In the embodiment, the joint body 100 is connected with the cold plate 300 in a welding manner, so that the liquid inlet channel 110 and the liquid outlet channel 120 are in communication with the liquid inlet 310 and the liquid outlet 320 of the cold plate 300 respectively, one end of the connecting pipe 200 is welded with the joint body 100 in a welding manner to be in communication with the liquid outlet channel 120, and the other end is welded with the cold plate 300 in a welding manner to be in communication with the liquid outlet 320 of the cold plate 300; in other embodiments, the joint body 100 and the connecting pipe 200 can also be fixed in a pasting manner.

[0046] In the application, the refrigerant can enter the liquid inlet channel 110 along the refrigerant supply end, enter the liquid inlet 310 of the cold plate 300 through the liquid inlet channel 110, at this time, the refrigerant can be divided into two paths and flow into the two refrigerant flow channels respectively, the refrigerant in the refrigerant flow channel after heat dissipation of the battery can enter the connecting pipe 200 and the liquid outlet channel 120 along the two liquid outlets 320 of the cold plate 300 respectively, by arranging the connecting pipe 200, multiple liquid outlet channels 120 do not need to be arranged in the joint body 100, so that the volume of the joint body 100 does not need to be set to be large, the production and manufacturing cost of the joint body 100 is reduced, and the structural complexity of the connecting joint is reduced; because the end of the connecting pipe 200 away from the liquid outlet 320 is in communication with the liquid outlet channel 120, the refrigerant entering the connecting pipe 200 can enter the liquid outlet channel 120 and flow with the refrigerant in the liquid outlet channel 120, so that only one connecting pipeline needs to be arranged between the liquid outlet channel 120 and the refrigerant circulation end, the refrigerants in the two refrigerant flow channels can enter the refrigerant circulation end along the same connecting pipeline to circulate, the number of connecting pipelines between the liquid outlet channel 120 and the refrigerant circulation end is reduced, the structural complexity of the refrigerant transported from the joint body 100 to the refrigerant circulation end is reduced, and the structural complexity of the connecting joint is further reduced.

[0047] In combination Figures 1 to 3 The joint body 100 is provided with a communication piece 130, the communication piece 130 is in communication with the liquid outlet channel 120, and one end of the connecting pipe 200 is inserted into the communication piece 130 and in communication with the communication piece 130.

[0048] In the embodiment, the communication member 130 is located at the position of the liquid outlet channel 120, the communication member 130 is arranged on the side of the connector body 100 away from the cold plate 300, the communication member 130 is connected to the connector body 100 by welding, and the connecting pipe 200 is fixed to the communication member 130 by welding after being inserted into the communication member 130. In other embodiments, the connector body 100 can also be integrally arranged on the connector body 100.

[0049] The arrangement of the communication member 130 can provide a connection point for the connection of the connecting pipe 200 and the liquid outlet channel 120, thereby facilitating the communication between the connecting pipe 200 and the liquid outlet channel 120. The connecting pipe 200 is inserted into the communication member 130, which facilitates the welding of the connecting pipe 200 and the communication member 130 along the circumference of the connecting pipe 200 after the one end of the connecting pipe 200 is inserted into the communication member 130, thereby indirectly improving the sealing performance of the connecting pipe 200 and the communication member 130 after the communication. The position of the connecting pipe 200 in the communication member 130 does not need to be calculated, and the fixing efficiency of the connecting pipe 200 and the communication member 130 is indirectly improved.

[0050] In combination Figures 1 to 3 The connecting pipe 200 includes a first connecting portion 210, a second connecting portion 220, and an arc-shaped portion 230. The two ends of the arc-shaped portion 230 are in communication with the first connecting portion 210 and the second connecting portion 220, respectively. The first connecting portion 210 is in communication with the liquid outlet channel 120, and the second connecting portion 220 is in communication with the liquid outlet 320.

[0051] In the embodiment, the arc-shaped portion 230 is arranged between the first connecting portion 210 and the second connecting portion 220. One end of the first connecting portion 210 is inserted into the communication member 130 and is in communication with the communication member 130. The first connecting portion 210 is in communication with the liquid outlet channel 120 through the communication member 130. The cross sections of the first connecting portion 210, the second connecting portion 220, and the arc-shaped portion 230 are circular. The first connecting portion 210, the second connecting portion 220, and the arc-shaped portion 230 are integrally arranged in an "L" shape. The end of the second connecting portion 220 away from the arc-shaped portion 230 is in communication with the liquid outlet 320. The first connecting portion 210, the arc-shaped portion 230, and the second connecting portion 220 are integrally arranged.

[0052] In other embodiments, the shapes of the first connecting portion 210, the second connecting portion 220, and the arc-shaped portion 230 can be adjusted as needed, for example, the cross-sectional shapes of the first connecting portion 210, the second connecting portion 220, and the arc-shaped portion 230 are rectangular.

[0053] By adopting the setting of the arc-shaped portion 230, the refrigerant in the refrigerant flow channel can enter the second connecting portion 220, the arc-shaped portion 230 and the first connecting portion 210 in turn along the liquid outlet 320. When the refrigerant passes through the arc-shaped portion 230, the arc-shaped portion 230 can prevent the refrigerant from being blocked in the flow in the connecting pipe 200, thereby improving the flow efficiency of the refrigerant passing through the arc-shaped portion 230, indirectly improving the circulation efficiency of the refrigerant in the refrigerant flow channel, and indirectly improving the heat dissipation efficiency of the cold plate 300 on the battery.

[0054] In combination Figures 1 to 3 The first connecting portion 210, the second connecting portion 220 and the arc-shaped portion 230 form a mounting space 240 for accommodating the joint body 100.

[0055] In the embodiment, the first connecting portion 210 is arranged perpendicularly to the second connecting portion 220, the first connecting portion 210 is arranged at the upper portion of the joint body 100, and the second connecting portion 220 is arranged at one side of the joint body 100.

[0056] By adopting the setting of the mounting space 240, the joint body 100 can utilize the space between the first connecting portion 210, the arc-shaped portion 230 and the second connecting portion 220, thereby reducing the space occupation of the entire connecting joint and improving the space utilization of the connecting joint on the cold plate 300.

[0057] In combination Figures 1 to 3 The mounting sleeve 250 is sleeved on the connecting pipe 200 and is used to connect the cold plate 300.

[0058] In the embodiment, the mounting sleeve 250 is arranged in a ring shape, the ring-shaped mounting sleeve 250 is sleeved on the second connecting portion 220 of the connecting pipe 200, the mounting sleeve 250 is arranged at the end of the second connecting portion 220 close to the cold plate 300, the mounting sleeve 250 is connected to the second connecting portion 220 in a welding manner, and the mounting sleeve 250 is connected to the cold plate 300 in a welding manner.

[0059] By adopting the setting of the mounting sleeve 250, when the second connecting portion 220 is docked with the liquid outlet 320, the mounting sleeve 250 is moved on the second connecting portion 220 to abut against the cold plate 300, the mounting sleeve 250 is connected to the second connecting portion 220 in a welding manner, and the mounting sleeve 250 is connected to the cold plate 300 in a welding manner. Compared with the welding manner of separately connecting the connecting pipe 200 and the cold plate 300, the welding area between the connecting pipe 200 and the cold plate 300 is indirectly increased, thereby improving the fixing strength of the connecting pipe 200 and the cold plate 300.

[0060] In combination Figures 1 to 3The joint body 100 comprises a liquid inlet part 140, a liquid outlet part 150 and an external connecting part 160, the external connecting part 160 is connected between the liquid inlet part 140 and the liquid outlet part 150, the liquid inlet channel 110 is arranged on the liquid inlet part 140, the liquid outlet channel 120 is arranged on the liquid outlet part 150, and the external connecting part 160 is used for connecting with external pipelines.

[0061] In the embodiment, the liquid inlet part 140, the liquid outlet part 150 and the external connecting part 160 are integrally arranged; the external connecting part 160 is provided with a threaded hole, and the external connecting part 160 is connected with external pipelines through the threaded hole.

[0062] The application adopts the arrangement of the external connecting part 160, when it is needed to fix the connecting pipelines between the liquid inlet channel 110 and the refrigerant supply end and the liquid outlet channel 120 and the refrigerant circulation end, the installation and fixation of the connecting pipelines can be realized through the threaded hole on the external connecting part 160, the connecting pipelines are prevented from being separated from the liquid inlet channel 110 and the liquid outlet channel 120 of the joint body 100, and thus the fixation strength of the connecting pipelines between the liquid inlet channel 110 and the refrigerant supply end and the liquid outlet channel 120 and the refrigerant circulation end and the joint body 100 is improved.

[0063] In the embodiment, the liquid inlet part 140 and the liquid outlet part 150 are symmetrically arranged on the two sides of the external connecting part 160, the cross-sectional area of the liquid inlet channel 110 in the liquid inlet part 140 is smaller than the cross-sectional area of the liquid outlet channel 120 in the liquid outlet part 150, the refrigerant in the connecting pipeline 200 needs to be converged into the liquid outlet channel 120, the cross-sectional area of the liquid outlet channel 120 is larger than the cross-sectional area of the liquid inlet channel 110, and thus the passing amount of the refrigerant in the liquid outlet channel 120 is increased, and the flow rate of the refrigerant in the liquid outlet channel 120 is improved.

[0064] In combination Figures 2 to 7 At least one of the connecting pipeline 200, the liquid inlet part 140, the liquid outlet part 150 and the connecting pipeline 200 is provided with a fixing boss 170, the fixing boss 170 on the liquid inlet part 140 is used for being inserted into the liquid inlet port 310, so as to communicate the liquid inlet channel 110 with the liquid inlet port 310, and the fixing boss 170 on the connecting pipeline 200 and the liquid outlet part 150 is used for being inserted into the corresponding liquid outlet port 320, so as to communicate the connecting pipeline 200 or the liquid outlet channel 120 with the liquid outlet port 320.

[0065] In the embodiment, the fixing protrusions 170 are arranged on the connecting pipe 200, the liquid inlet portion 140, the liquid outlet portion 150 and the connecting pipe 200, the fixing protrusion 170 on the connecting pipe 200 is arranged at the end of the second connecting portion 220 away from the arc-shaped portion 230, the liquid inlet portion 140 and the liquid outlet portion 150 each include a first connecting segment 180 and a second connecting segment 190, the first connecting segment 180 and the second connecting portion 220 are arranged integrally, the second connecting segment 190 is arranged at the lower part of the first connecting segment 180, the second connecting segment 190 is circular in cross section, the axis of the circular second connecting segment 190 is perpendicular to the cold plate 300, the fixing protrusion 170 on the liquid inlet portion 140 is arranged at the end of the second connecting segment 190 of the liquid inlet portion 140 away from the first connecting segment 180, and the fixing protrusion 170 on the liquid outlet portion 150 is arranged at the end of the second connecting segment 190 of the liquid outlet portion 150 away from the first connecting segment 180; the communicating member 130 and the second connecting portion 220 of the liquid outlet portion 150 are arranged at the upper part and the lower part of the first connecting segment 180 respectively.

[0066] In the embodiment, the diameter of the fixing protrusion 170 is smaller than the diameter of the circular second connecting segment 190; in other embodiments, the diameter of the fixing protrusion 170 can be greater than the diameter of the circular second connecting segment 190.

[0067] In the embodiment, the diameter of the fixing protrusion 170 is smaller than the diameter of the circular second connecting segment 190; in other embodiments, the diameter of the fixing protrusion 170 can be greater than the diameter of the circular second connecting segment 190.

[0068] In combination Figures 2 to 7 , the length of the fixing protrusion 170 on the liquid inlet portion 140 is less than or equal to the depth of the liquid inlet 310, and the length of the fixing protrusions 170 on the connecting pipe 200 and the liquid outlet portion 150 is less than or equal to the depth of the liquid outlet 320.

[0069] In the embodiment, when the fixing protrusions 170 are inserted into the liquid inlet 310 and the liquid outlet 320, since the liquid inlet 310 and the liquid outlet 320 are in communication with the refrigerant flow channel, the fixing protrusions 170 are prevented from being blocked in the refrigerant flow channel of the cold plate 300, thereby preventing the fixing protrusions 170 from affecting the flow of the refrigerant in the refrigerant flow channel, indirectly improving the flow efficiency of the refrigerant in the refrigerant flow channel, and thereby indirectly improving the heat dissipation efficiency of the cold plate 300 on the battery.

[0070] In combination Figures 4 to 7 At least one of the connecting pipe 200, the liquid inlet portion 140 and the liquid outlet portion 150 is provided with an inclined surface 191, the inclined surface 191 is arranged at the end of the liquid inlet portion 140 and the liquid outlet portion 150 close to the cold plate 300, and when the joint body 100 is connected with the cold plate 300, the inclined surface 191 and the cold plate 300 form a containing space 192 for containing the welding wire.

[0071] In the embodiment, the inclined surface 191 is arranged on the connecting pipe 200, the liquid inlet portion 140 and the liquid outlet portion 150, the inclined surface 191 of the connecting pipe 200 is arranged at the end of the second connecting portion 220 of the connecting pipe 200 away from the arc-shaped portion 230, and the inclined surface 191 is arranged along the circumferential direction of the second connecting portion 220; the inclined surface 191 of the liquid inlet portion 140 is arranged at the end of the second connecting segment 190 of the liquid inlet portion 140 away from the first connecting segment 180, and the inclined surface 191 is arranged along the circumferential direction of the second connecting segment 190 of the liquid inlet portion 140; the inclined surface 191 of the liquid outlet portion 150 is arranged at the end of the second connecting segment 190 of the liquid outlet portion 150 away from the first connecting segment 180, and the inclined surface 191 is arranged along the circumferential direction of the second connecting segment 190 of the liquid outlet portion 150; the diameter of the annular inclined surface 191 gradually increases away from the cold plate 300.

[0072] By adopting the arrangement of the inclined surface 191, when the connecting pipe 200, the liquid inlet portion 140 and the liquid outlet portion 150 are welded with the cold plate 300, the bottom edge of the inclined surface 191 can be brought into abutment with the cold plate 300, at this time, the containing space 192 is formed between the inclined surface 191 and the cold plate 300, the welding wire is wound on the inclined surface 191, and the connecting pipe 200, the liquid inlet portion 140 and the liquid outlet portion 150 are welded with the cold plate 300 through the welding wire, thereby increasing the thickness of the welding wire and further improving the welding strength of the connecting pipe 200, the liquid inlet portion 140 and the liquid outlet portion 150 with the cold plate 300.

[0073] In combination Figures 1 to 3 The liquid inlet channel 110 includes a first communicating portion 111 and a second communicating portion 112, the first communicating portion 111 communicates with the refrigerant liquid supply end, one end of the second communicating portion 112 communicates with the first communicating portion 111, and the other end communicates with the liquid inlet 310, the first communicating portion 111 is arranged parallel to the cold plate 300, and the second communicating portion 112 is arranged perpendicular to the cold plate 300.

[0074] In the embodiment, the first communicating part 111 of the liquid inlet channel 110 is arranged on the first connecting section 180 of the liquid inlet part 140, the second communicating part 112 of the liquid inlet channel 110 is arranged on the second connecting section 190 of the liquid inlet part 140, the first connecting section 180 of the liquid inlet part 140 is circular in cross section, the first communicating part 111 is coaxially arranged with the first connecting section 180 of the liquid inlet part 140, the second connecting section 190 of the liquid inlet part 140 is circular in cross section, and the second communicating part 112 is coaxially arranged with the second connecting section 190 of the liquid inlet part 140.

[0075] The first communicating part 111 is parallel to the cold plate 300, and the second communicating part 112 is perpendicular to the cold plate 300, so that the first communicating part 111 and the second communicating part 112 are in the shape of "L" as a whole, thereby facilitating installation of the connecting pipeline between the refrigerant liquid supply end and the liquid inlet channel 110 on the side of the joint body 100, preventing the battery on the upper part of the cold plate 300 from affecting installation of the connecting pipeline, and reducing the space occupied by the joint body 100 in the vertical direction after installation.

[0076] In combination with Figures 1 to 3 The liquid outlet channel 120 includes a third communicating part 121 and a fourth communicating part 122, the third communicating part 121 is in communication with the refrigerant circulation end, one end of the fourth communicating part 122 is in communication with the third communicating part 121, and the other end is in communication with the liquid outlet 320, the third communicating part 121 is parallel to the first communicating part 111, and the fourth communicating part 122 is parallel to the second communicating part 112.

[0077] In the embodiment, the third communicating part 121 of the liquid outlet channel 120 is arranged on the first connecting section 180 of the liquid outlet part 150, the fourth communicating part 122 of the liquid outlet channel 120 is arranged on the second connecting section 190 of the liquid outlet part 150, the first connecting section 180 of the liquid outlet part 150 is circular in cross section, the third communicating part 121 is coaxially arranged with the first connecting section 180 of the liquid outlet part 150, the second connecting section 190 of the liquid outlet part 150 is circular in cross section, and the fourth communicating part 122 is coaxially arranged with the second connecting section 190 of the liquid outlet part 150.

[0078] The third communication part 121 is parallel to the first communication part 111, and the fourth communication part 122 is parallel to the second communication part 112, so that the third communication part 121 and the fourth communication part 122 have the same shape as the first communication part 111 and the second communication part 112, facilitating installation of a connecting pipeline between the refrigerant circulation end and the liquid outlet channel 120 on the side of the joint body 100, preventing the battery on the upper part of the cold plate 300 from affecting installation of the connecting pipeline by utilizing the space on the side of the cold plate 300, and reducing the space occupied by the joint body 100 in the vertical direction after installation; the liquid inlet channel 110 and the liquid outlet channel 120 have the same shape, reducing the structural complexity of the liquid inlet channel 110 and the liquid outlet channel 120, thereby facilitating production and manufacturing of the joint body 100.

[0079] In the embodiment, the joint is made of 6-series aluminum material, which is an aluminum alloy with magnesium and silicon as main alloying elements, and has excellent strength, corrosion resistance and processing performance.

[0080] The embodiment also provides a thermal management system, which comprises the cold plate 300 and the joint according to any one of the above embodiments.

[0081] The specific structure of the joint has been described in detail in the above embodiments, and will not be repeated here.

[0082] In the embodiment, the cold plate 300 is a stamped and brazed plate, which comprises an upper plate and a lower plate, and a plurality of refrigerant channels are formed between the upper plate and the lower plate after welding. The cold plate 300 is also made of 6-series aluminum material, which is an aluminum alloy with magnesium and silicon as main alloying elements, and has excellent strength, corrosion resistance and processing performance.

[0083] The embodiment also provides a battery pack, which comprises a frame and the thermal management system according to any one of the above embodiments.

[0084] The embodiment also provides a power consumption device, which comprises a battery and the battery pack according to any one of the above embodiments.

[0085] In the embodiment, the power consumption device is a car, and in other embodiments, the power consumption device can also be other devices that need to use the cold plate 300 to cool the battery.

[0086] The power utilization equipment provided by the embodiments of the present application is provided with a battery pack. When the connecting joint needs to be assembled, the connecting pipe 200 is first inserted into the communicating member 130 with the first connecting part 210, so that the connecting pipe 200 communicates with the liquid outlet channel 120 through the communicating member 130, the first connecting part 210 is fixed to the communicating member 130 by welding, the welding wire is wound on the inclined surface 191 of the second connecting part 220 of the connecting pipe 200 and the inclined surface 191 of the second connecting section 190 of the liquid inlet part 140 and the liquid outlet part 150, the joint body 100 is driven to move towards the cold plate 300 as a whole, the joint body 100 can drive the fixed boss 170 on the second connecting section 190 of the liquid inlet part 140 to be inserted into the liquid inlet 310, and the fixed boss 170 of the second connecting part 220 of the connecting pipe 200 and the fixed boss 170 of the second connecting section 190 of the liquid outlet part 150 are inserted into the two liquid outlets 320 respectively, the welding wire in the accommodating space 192 is used to fix the second connecting section 190 of the liquid inlet part 140 and the liquid outlet part 150 on the cold plate 300, and the second connecting part 220 of the connecting pipe 200 is welded to the cold plate 300, so that the liquid inlet channel 110 in the liquid inlet part 140 communicates with the liquid inlet 310 of the cold plate 300, and the liquid outlet channel 120 in the liquid outlet part 150 communicates with the liquid outlet 320 of the cold plate 300. The connecting pipe is arranged between the first communicating part 111 of the liquid inlet channel 110 and the refrigerant supply end, and the connecting pipe is arranged between the third communicating part 121 of the liquid outlet channel 120 and the refrigerant circulation end, so that the liquid inlet channel 110 communicates with the refrigerant supply end, and the liquid outlet channel 120 communicates with the refrigerant circulation end. When the refrigerant is output from the refrigerant supply end, it can flow into the liquid outlet 320 along the liquid inlet channel 110, the liquid inlet 310 and the refrigerant channel in sequence. The refrigerant output from one of the liquid outlets 320 can enter the liquid outlet channel 120 through the connecting pipe 200, and the refrigerant output from the other liquid outlet 320 can directly enter the liquid outlet channel 120, so as to enter the refrigerant circulation end along the liquid outlet channel 120 and circulate again. By arranging the connecting pipe 200, multiple liquid outlet channels 120 do not need to be arranged in the joint body 100, so that the volume of the joint body 100 does not need to be set to be large, the cost of production and manufacturing of the joint body 100 is reduced, and the structural complexity of the connecting joint is reduced. Only one connecting pipe needs to be arranged between the liquid outlet channel 120 and the refrigerant circulation end, and the refrigerant in multiple refrigerant flow channels can enter the refrigerant circulation end along the same connecting pipe, the number of connecting pipes between the liquid outlet channel 120 and the refrigerant circulation end is reduced, the structural complexity of the refrigerant transported from the joint body 100 to the refrigerant circulation end is reduced, and the structural complexity of the connecting joint is further reduced.

[0087] It should be understood that many variations can be made in the embodiments described and shown which should be considered within the scope of the present application as defined by the appended claims.

Claims

1. A connecting joint, characterized in that The application relates to a joint body (100) provided with a liquid inlet channel (110) and a liquid outlet channel (120), one end of the liquid inlet channel (110) being communicated with a refrigerant supply end of a heat management system, the other end being communicated with a liquid inlet (310) of a cold plate (300) of the heat management system, one end of the liquid outlet channel (120) being communicated with a refrigerant circulation end of the heat management system, one of a plurality of liquid outlets (320) of the cold plate (300) being communicated with the other end of the liquid outlet channel (120); a connecting pipe (200) provided with at least one, one end of the connecting pipe (200) being communicated with the liquid outlet channel (120), the other end of the plurality of connecting pipes (200) being communicated with the rest of the plurality of liquid outlets (320) one by one. The joint body (100) is provided with a communicating member (130) communicated with the liquid outlet channel (120), one end of the connecting pipe (200) is inserted in the communicating member (130) and communicated with the communicating member (130). The connecting pipe (200) comprises a first connecting part (210), a second connecting part (220) and an arc-shaped part (230), two ends of the arc-shaped part (230) are communicated with the first connecting part (210) and the second connecting part (220) respectively, the first connecting part (210) is communicated with the liquid outlet channel (120), and the second connecting part (220) is communicated with the liquid outlet (320).

2. The connection joint of claim 1, wherein The first connecting part (210), the second connecting part (220) and the arc-shaped part (230) form a mounting space (240) for accommodating the joint body (100) therebetween.

3. The connection joint of claim 1, wherein The connecting pipe (200) is provided with a mounting sleeve (250), the mounting sleeve (250) is used for being connected with the cold plate (300).

4. The connection joint of claim 3, wherein The joint body (100) comprises a liquid inlet part (140), a liquid outlet part (150) and an external connecting part (160), the external connecting part (160) is connected between the liquid inlet part (140) and the liquid outlet part (150), the liquid inlet channel (110) is arranged on the liquid inlet part (140), the liquid outlet channel (120) is arranged on the liquid outlet part (150), and the external connecting part (160) is used for being connected with an external pipeline.

5. The connection joint of claim 1, wherein The connecting pipe (200), the liquid inlet part (140), the liquid outlet part (150) and at least one of the connecting pipe (200) are provided with a fixing boss (170), the fixing boss (170) on the liquid inlet part (140) is used for being inserted in the liquid inlet (310) so as to communicate the liquid inlet channel (110) with the liquid inlet (310), and the fixing boss (170) on the connecting pipe (200) and the liquid outlet part (150) is used for being inserted in the corresponding liquid outlet (320) so as to communicate the connecting pipe (200) or the liquid outlet channel (120) with the liquid outlet (320).

6. The connecting joint according to any one of claims 1-5, characterized in that ​ 7. The connection joint of claim 6, wherein ​ 8. The connection joint of claim 7, wherein The length of the fixed boss (170) on the liquid inlet part (140) is less than or equal to the depth of the liquid inlet (310), and the length of the fixed boss (170) on the connecting pipe (200) and the liquid outlet part (150) is less than or equal to the depth of the liquid outlet (320).

9. The connection joint of claim 8, wherein, At least one of the connecting pipe (200), the liquid inlet part (140) and the liquid outlet part (150) is provided with an inclined surface (191), the inclined surface (191) is arranged at the end of the liquid inlet part (140) and the liquid outlet part (150) close to the cold plate (300), and the inclined surface (191) and the cold plate (300) form an accommodation space (192) for accommodating welding wire.

10. A connection joint according to any one of claims 7-9, characterised in that The liquid inlet channel (110) comprises a first communication part (111) and a second communication part (112), the first communication part (111) is in communication with the refrigerant liquid supply end, one end of the second communication part (112) is in communication with the first communication part (111), and the other end is in communication with the liquid inlet (310), the first communication part (111) is arranged parallel to the cold plate (300), and the second communication part (112) is arranged perpendicular to the cold plate (300).

11. The connection joint of claim 10, wherein, The liquid outlet channel (120) comprises a third communication part (121) and a fourth communication part (122), the third communication part (121) is in communication with the refrigerant circulation end, one end of the fourth communication part (122) is in communication with the third communication part (121), and the other end is in communication with the liquid outlet (320), the third communication part (121) is arranged parallel to the first communication part (111), and the fourth communication part (122) is arranged parallel to the second communication part (112).

12. A thermal management system characterized by, The connecting joint as claimed in any one of claims 1-11 is arranged on the cold plate (300).

13. A battery pack, characterized by The thermal management system as claimed in claim 12 is arranged on the frame.

14. An electrical device, characterized by The battery pack as claimed in claim 13 is arranged on the battery. The battery pack as claimed in claim 13 is arranged on the battery.

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