Heat exchange assembly, battery pack and electric equipment

Abstract

The utility model relates to the technical field of heat exchange assemblies, and provides a heat exchange assembly, a battery pack and electric equipment, the heat exchange assembly is used for exchanging heat with a battery pack, the heat exchange assembly comprises a confluence flow channel group and a heat exchange flow channel group, the heat exchange flow channel group communicates with the confluence flow channel group, and in the heat exchange assembly, only the heat exchange flow channel group exchanges heat with the battery pack. The problem that an existing heat exchange assembly cannot effectively improve the temperature nonuniformity of a battery pack can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange assemblies, in particular to a heat exchange assembly, a battery pack and an electric device. BACKGROUND

[0002] The existing battery pack uses a heat exchange assembly for cooling, and the heat exchange assembly has the functions of rapid heat conduction and heat diffusion. The heat exchange assembly is connected to the battery pack and heat exchange occurs between the heat exchange assembly and the battery pack.

[0003] The heat exchange assembly comprises a liquid inlet, a heat exchange flow channel and a liquid outlet connected in sequence, and the heat exchange flow channel is provided with a refrigerant.

[0004] In the related art, the worse the heat exchange performance of the heat exchange assembly located in the relatively rear half, the more uneven the temperature of the battery pack. Utility model content

[0005] The present application provides a heat exchange assembly, a battery pack and an electric device, which can solve the problem that the worse the heat exchange performance of the heat exchange assembly located in the relatively rear half, the more uneven the temperature of the battery pack.

[0006] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0007] In the first direction, the present application provides a heat exchange assembly for heat exchange with a battery pack, which comprises:

[0008] A converging flow channel group;

[0009] A heat exchange flow channel group, which is in communication with the converging flow channel group;

[0010] In the heat exchange assembly, only the heat exchange flow channel group is in heat exchange with the battery pack.

[0011] In a feasible implementation, the converging flow channel group comprises:

[0012] A liquid inlet flow channel, which is in communication with the heat exchange flow channel group and is arranged on a first side of the heat exchange flow channel group along the first direction.

[0013] In a feasible implementation, the converging flow channel group comprises:

[0014] A liquid outlet flow channel, which is in communication with the heat exchange flow channel group; and at least part of the liquid outlet flow channel is arranged on a second side of the heat exchange flow channel group along the first direction, the first side and the second side being opposite sides.

[0015] In a feasible implementation, the liquid inlet flow channel extends along a second direction, and the first direction and the second direction intersect.

[0016] In an implementation, the outflow channel includes a first channel portion, the first channel portion is located at a second side of the heat exchange channel group along the first direction and extends along the second direction.

[0017] In an implementation, the outflow channel includes a second channel portion, the second channel portion is in communication with the first channel portion; the second channel portion is located at a first side of the heat exchange channel group along the second direction and extends along the first direction.

[0018] In an implementation, the inlet of the inlet flow channel is located at one side of the heat exchange channel group along the second direction.

[0019] In an implementation, the outlet of the outlet flow channel is located at one side of the heat exchange channel group along the second direction.

[0020] In an implementation, the inlet of the inlet flow channel and the outlet of the outlet flow channel are located at the same side of the heat exchange channel group along the second direction.

[0021] In an implementation, the inlet of the inlet flow channel and the outlet of the outlet flow channel are located at the same side of the heat exchange channel group along the first direction.

[0022] In an implementation, along the second direction, the second channel portion and the inlet of the inlet flow channel are located at the same side of the heat exchange channel group along the second direction.

[0023] The port of the second channel portion close to the inlet forms the outlet.

[0024] In an implementation, the inlet of the inlet flow channel and the outlet of the outlet flow channel are located at different sides of the heat exchange channel group along the second direction.

[0025] In an implementation, the heat exchange channel group has a plurality of heat exchange channel groups, and the plurality of heat exchange channel groups are arranged along the first direction.

[0026] In an implementation, the confluence channel group has a plurality of confluence channel groups, and the plurality of confluence channel groups are in one-to-one communication with the plurality of heat exchange channel groups.

[0027] In an implementation, the plurality of heat exchange channel groups includes a first heat exchange channel group and a second heat exchange channel group, and the first heat exchange channel group and the second heat exchange channel group are arranged along the first direction.

[0028] In an implementation, along the first direction, the inlet flow channel of the first heat exchange channel group and the inlet flow channel of the second heat exchange channel group are located at the side close to each other of the first heat exchange channel group and the second heat exchange channel group.

[0029] In an implementation, the inlet flow channel of the first heat exchange channel group and the inlet flow channel of the second heat exchange channel group are in communication with each other.

[0030] In an implementation, the liquid outlet flow channel of the first heat exchange flow channel group is located on the side of the first heat exchange flow channel group facing away from the second heat exchange flow channel group in the first direction.

[0031] The liquid outlet flow channel of the second heat exchange flow channel group is located on the side of the second heat exchange flow channel group facing away from the first heat exchange flow channel group.

[0032] In an implementation, the flow channels of the two heat exchange flow channel groups in the same first direction are arranged in the same way.

[0033] Alternatively, the flow channels of the two heat exchange flow channel groups in the same first direction are arranged symmetrically.

[0034] In an implementation, the liquid inlet flow channel, one of the plurality of heat exchange flow channel groups, and the liquid outlet flow channel are sequentially connected to form a first flow path.

[0035] In an implementation, the liquid inlet flow channel, another of the plurality of heat exchange flow channel groups, and the liquid outlet flow channel are sequentially connected to form a second flow path.

[0036] In an implementation, part of the first flow path and part of the second flow path are multiplexed.

[0037] In an implementation, the first flow path has a first length, and the second flow path has a second length.

[0038] The total length of the first length is equal to the total length of the second length.

[0039] In an implementation, the heat exchange flow channel group includes a plurality of heat exchange flow channels arranged in a second direction.

[0040] The plurality of heat exchange flow channels are used to indirectly or directly exchange heat with the plurality of battery cells in the battery group one by one.

[0041] In an implementation, the heat exchange flow channel includes a first sub-flow channel and a second sub-flow channel connected in sequence.

[0042] In the flow direction of the fluid, the end of the first sub-flow channel away from the second sub-flow channel is connected to the liquid inlet flow channel.

[0043] In the flow direction of the fluid, the end of the second sub-flow channel away from the first sub-flow channel is connected to the liquid outlet flow channel.

[0044] In an implementation, the first sub-flow channel extends in the second direction.

[0045] In an embodiment, two first sub-flow channels are provided, and the liquid flow directions of the two first sub-flow channels are opposite in the second direction.

[0046] In an embodiment, when two first sub-flow channels are provided, two second sub-flow channels are provided, and the two second sub-flow channels and the two first sub-flow channels are in one-to-one correspondence.

[0047] In an embodiment, two second sub-flow channels are provided, and the two second sub-flow channels are connected to the same first sub-flow channel away from the liquid inlet channel.

[0048] In an embodiment, the two second sub-flow channels are spaced apart in the second direction.

[0049] In an embodiment, the second sub-flow channel comprises a plurality of flow channel segments connected in sequence, and the plurality of flow channel segments are arranged in the second direction.

[0050] In an embodiment, in the same heat exchange channel, the most distal flow channel segment is connected to the first sub-flow channel in the second direction.

[0051] In an embodiment, the flow channel segment connected to the first sub-flow channel extends in the first direction.

[0052] In an embodiment, the flow channel segment connected to the liquid outlet channel is located in the second sub-flow channel and is in the middle of the second direction.

[0053] In an embodiment, the flow channel segment connected to the liquid outlet channel extends in the first direction.

[0054] In an embodiment, the first sub-flow channel is located on the first side of the second sub-flow channel in the first direction.

[0055] In an embodiment, in the second direction away from the liquid inlet, the number of second sub-flow channels of the plurality of heat exchange channels increases.

[0056] In an embodiment, in the second direction, the arrangement of the part of the heat exchange channels on the side relatively far from the liquid inlet is the same as the arrangement of the part of the heat exchange channels on the side relatively close to the liquid inlet.

[0057] In an embodiment, the liquid inlet channel further comprises:

[0058] The main flow channel, one end of the main flow channel forms a liquid inlet, and the end of the main flow channel away from the liquid inlet is connected to a plurality of heat exchange channels.

[0059] In an embodiment, the liquid inlet channel further comprises:

[0060] a sub-channel, the liquid inlet end of the sub-channel being in communication with the main channel, and the liquid outlet end of the sub-channel being in communication with the first sub-flow channel of the plurality of heat exchange channels;

[0061] the heat exchange channels in communication with the sub-channel are located in the corresponding heat exchange channel group, and are closer to the liquid inlet side in the second direction.

[0062] In an embodiment, the sub-channel extends in the second direction, and in the second direction, the liquid inlet end is located on the side of the liquid outlet end away from the liquid inlet.

[0063] In an embodiment, the liquid outlet end is provided with a plurality of liquid outlet ends, and in the second direction, the plurality of liquid outlet ends are arranged at intervals.

[0064] In an embodiment, in the corresponding heat exchange channel group and the liquid inlet channel in communication, the first sub-flow channel of a number of heat exchange channels further away from the liquid inlet side in the second direction is in communication with the main channel.

[0065] In an embodiment, the main channel extends in the second direction, and the communication between the sub-channel and the main channel is located in the middle section of the main channel in the second direction.

[0066] In an embodiment, in the first direction, the main channel is located on the side of the sub-channel away from the battery pack.

[0067] In an embodiment, the liquid outlet channel is in communication with the second sub-flow channel.

[0068] In an embodiment, each of the second sub-flow channels of the heat exchange channels comprises at least two liquid inlet ends and liquid outlet ends, the two liquid inlet ends are arranged at one end of the heat exchange channel in the first direction, and the liquid outlet end is arranged at the other end of the heat exchange channel in the first direction, wherein the two liquid outlet ends are arranged at the two ends of the second sub-flow channel in the second direction, respectively.

[0069] In a second aspect, the application provides a battery pack comprising a battery pack and a heat exchange assembly, the battery pack being connected to the heat exchange assembly.

[0070] In an embodiment, the battery pack is provided with a plurality of battery groups;

[0071] The plurality of battery groups are arranged at intervals in the first direction;

[0072] And / or, the plurality of battery groups are arranged at intervals in the second direction.

[0073] In an embodiment, a battery group comprises a plurality of battery cells, the battery cells being arranged in the second direction; and / or, the battery cells are arranged in the first direction.

[0074] In an implementation, the battery cell has a positive electrode end and a negative electrode end, and the positive electrode end and the negative electrode end are respectively arranged at two ends of the battery cell in the second direction.

[0075] In a third aspect, the application provides a power utilization device, characterized in that comprising a power utilization device and a battery pack, the battery pack is electrically connected with the power utilization device, and is used for providing electric energy for the power utilization device.

[0076] The heat exchange assembly provided by the application is used for heat exchange with the battery pack, and the heat exchange assembly comprises: a converging flow channel group and a heat exchange flow channel group, and the heat exchange flow channel group and the converging flow channel group are communicated.

[0077] The heat exchange assembly with the structure can guide the refrigerant to the heat exchange flow channel group after the refrigerant passes through the converging flow channel group, or can guide the refrigerant in the heat exchange flow channel group to the outside of the heat exchange assembly after the refrigerant passes through the converging flow channel group. By arranging only the heat exchange flow channel group to be in heat exchange with the battery pack in the heat exchange assembly, heat exchange between the battery pack and the heat exchange flow channel group can be generated, so that the heat dissipation efficiency of the battery pack is improved, and heat exchange between the converging flow channel group and the battery pack is reduced, so that reverse heat transfer of the heat exchange assembly to the battery pack is avoided, and the problem of uneven temperature of the battery pack is optimized, so that the safety performance of the battery pack is improved.

[0078] Therefore, the heat exchange assembly provided by the application can solve the problem that the existing heat exchange assembly cannot effectively improve the uneven temperature of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0079] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0080] Figure 1 The main structure schematic diagram of the heat exchange assembly provided by the embodiment of the application;

[0081] Figure 2 The connection structure schematic diagram of the heat exchange assembly and the battery pack provided by the embodiment of the application;

[0082] Figure 3 The main structure schematic diagram of the battery pack provided by the embodiment of the application.

[0083] Explanation of reference signs:

[0084] 10 - heat exchange assembly;

[0085] 20 - battery pack;

[0086] 100 - current collector group; 101 - liquid inlet flow channel; 1011 - liquid inlet; 1012 - main flow channel; 1013 - sub-flow channel; 102 - liquid outlet flow channel; 1021 - liquid outlet; 1022 - first flow channel part; 1023 - second flow channel part;

[0087] 200 - heat exchange flow channel group; 201 - first sub-flow flow channel; 202 - second sub-flow flow channel;

[0088] X - first direction;

[0089] Y - second direction. DETAILED DESCRIPTION

[0090] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application. The embodiments described below and the features in the embodiments can be combined with each other without conflict.

[0091] The refrigerant in the heat exchange assembly enters the heat exchange flow channel through the liquid inlet and flows out of the liquid outlet after passing through the heat exchange flow channel.

[0092] In the prior art, the liquid inlet of the refrigerant is arranged at both ends of the heat exchange assembly, and the liquid outlet of the refrigerant is arranged at the middle of the heat exchange assembly, so that the end part of the battery pack which generates heat seriously can be better cooled.

[0093] Under high-temperature working conditions, the heat exchange flow channel first meets the heat dissipation demand of the end part of the battery pack, and with the continuous heat exchange along the flow channel, the flow path located in the latter half of the heat exchange assembly will appear an overheated flow section, and even the originally less heat-producing middle section of the battery cell will appear a reverse heat transfer of the heat exchange assembly, so that the temperature of the middle section of the battery cell is increased, thereby causing the temperature of the battery pack to be non-uniform, and thus the safety of the battery pack is deteriorated.

[0094] In order to overcome the defects in the prior art, in the heat exchange assembly provided in the embodiments of the present application, by connecting the flow converging channel group and the heat exchange channel group, the refrigerant can be guided to the heat exchange channel group after passing through the flow converging channel group, or the refrigerant in the heat exchange channel group can be guided to the outside of the heat exchange assembly after passing through the flow converging channel group. By only arranging the heat exchange channel group and the battery group for heat exchange in the heat exchange assembly, heat exchange can be generated between the battery group and the heat exchange channel group, so as to improve the heat dissipation efficiency of the battery group, and the heat exchange between the flow converging channel group and the battery group can be reduced, so that the reverse heat transfer of the heat exchange assembly to the battery group is avoided, thereby optimizing the problem of uneven temperature of the battery pack and improving the safety performance of the battery pack.

[0095] The content of the present application will be described in detail below with reference to the drawings, so that those skilled in the art can have a clearer and more detailed understanding of the content of the present application.

[0096] The specific structure of the heat exchange assembly, the battery pack and the electric equipment and various possible embodiments will be described in detail below.

[0097] As shown in Figure 1 and Figure 2 , the embodiments of the present application provide a heat exchange assembly 10 for heat exchange with a battery group 20, the heat exchange assembly 10 comprising: a flow converging channel group 100 and a heat exchange channel group 200, the heat exchange channel group 200 and the flow converging channel group 100 being connected, and only the heat exchange channel group 200 and the battery group 20 being heat exchanged in the heat exchange assembly 10.

[0098] It should be noted that, in the flow converging channel group 100 and the heat exchange channel group 200, only the heat exchange channel group 200 and the battery group 20 are heat exchanged, which can reduce the influence of temperature fluctuation of the heat exchange assembly 10 on the battery group 20, thereby improving the safety performance of the battery group 20.

[0099] The flow converging channel group 100 provided in the embodiments of the present application comprises: an inlet flow channel 101, the inlet flow channel 101 being connected with the heat exchange channel group 200 and being arranged on the first side of the heat exchange channel group 200 along the first direction X.

[0100] It can be understood that the inlet flow channel 101 is used to guide the refrigerant to the heat exchange channel group 200, and the inlet flow channel 101 is arranged on the first side of the heat exchange channel group 200 along the first direction X, which can reduce the occurrence of heat exchange between the low-temperature refrigerant in the inlet flow channel 101 and the battery group 20, thereby protecting the battery group 20.

[0101] The heat exchange assembly 10 provided by the embodiment of the present application comprises a liquid inlet flow channel 101 and a liquid outlet flow channel 102.

[0102] It can be understood that the refrigerant on the side of the heat exchange flow channel group 200 away from the liquid inlet flow channel 101 is used to be guided to the outside of the heat exchange assembly 10 after passing through the liquid outlet flow channel 102, so that the high-temperature refrigerant can be guided to the outside of the heat exchange assembly 10 after passing through the liquid outlet flow channel 102. The liquid outlet flow channel 102 is arranged on the second side of the heat exchange flow channel group 200 along the first direction X, which can reduce the heat exchange between the high-temperature refrigerant in the liquid outlet flow channel 102 and the battery pack 20, thereby reducing the occurrence of reverse heat transfer from the heat exchange assembly 10 to the battery pack 20, thereby protecting the battery pack 20. The first side and the second side are opposite sides, which can reduce the direct heat exchange between the liquid inlet flow channel 101 and the liquid outlet flow channel 102, thereby reducing the temperature rise of the liquid inlet flow channel 101, reducing the poor heat dissipation of the battery pack 20, and reducing the waste of cold energy caused by the temperature reduction of the liquid outlet flow channel 102.

[0103] The liquid inlet flow channel 101 extends along the second direction Y, and the first direction X and the second direction Y intersect.

[0104] It can be understood that the liquid inlet flow channel 101 extends along the second direction Y, which can increase the length of the liquid inlet flow channel 101, so that the liquid inlet flow channel 101 can deliver the refrigerant to multiple positions of the heat exchange assembly 10 along the second direction Y, thereby improving the safety performance of the heat exchange assembly 10.

[0105] It should be noted that the first direction X and the second direction Y intersect, and the intersection angle can be 90 degrees, 45 degrees, 60 degrees or other angles, which is not limited herein and can be selected according to actual use requirements, as long as the first direction X and the second direction Y intersect.

[0106] It can be understood that the first direction X and the second direction Y intersect, which can improve the practicability of the heat exchange assembly 10.

[0107] It should be noted that the first side of the heat exchange flow channel group 200 along the first direction X and the second side along the first direction X have various different arrangement modes, and the arrangement positions of the first side along the first direction X and the second side along the first direction X will be described in turn.

[0108] In one possible implementation manner, as shown in FIG. 1, Figure 1As shown in the middle and lower half of the schematic diagram, the first side of the heat exchange channel group 200 along the first direction X is located above the heat exchange channel group 200, and the second side of the heat exchange channel group 200 along the first direction X is located below the heat exchange channel group 200.

[0109] In another possible implementation, as Figure 1 As shown in the middle and lower half of the schematic diagram, the first side of the heat exchange channel group 200 along the first direction X is located above the heat exchange channel group 200, and the second side of the heat exchange channel group 200 along the first direction X is located below the heat exchange channel group 200.

[0110] It can be understood that the arrangement positions of the first side of the heat exchange channel group 200 along the first direction X and the second side of the heat exchange channel group 200 along the first direction X are not limited, and can be selected according to actual use requirements. It is hereby stated that the first side and the second side of the first side and the second side of the heat exchange channel group 200 along the first direction X are virtual concepts and are not physical components.

[0111] The liquid outlet flow channel 102 provided by the embodiment of the present application comprises a first flow channel part 1022, which is located at the second side of the heat exchange channel group 200 along the first direction X and extends along the second direction Y.

[0112] It can be understood that the arrangement of the first flow channel part 1022 at the second side of the heat exchange channel group 200 along the first direction X can reduce the direct heat exchange between the first flow channel part 1022 and the liquid inlet flow channel 101, which causes the temperature rise of the liquid inlet flow channel 101 and the occurrence of poor heat dissipation of the battery pack 20, and can reduce the temperature drop of the first flow channel part 1022, which causes the occurrence of waste of cold energy of the liquid inlet flow channel 101. The extension of the first flow channel part 1022 along the second direction Y can increase the length of the first flow channel part 1022, thereby reducing the heat accumulation of the heat exchange assembly 10, thereby improving the safety performance of the heat exchange assembly 10.

[0113] The liquid outlet flow channel 102 provided by the embodiment of the present application comprises a second flow channel part 1023, which is in communication with the first flow channel part 1022, and is located at the first side of the heat exchange channel group 200 along the second direction Y and extends along the first direction X.

[0114] It can be understood that by communicating the second flow channel part 1023 with the first flow channel part 1022, the refrigerant in the first flow channel part 1022 can be guided to the second flow channel part 1023, and the extension of the second flow channel along the first direction X can reduce the heat accumulation of the heat exchange assembly 10, thereby improving the safety performance of the heat exchange assembly 10.

[0115] The liquid inlet 1011 of the liquid inlet flow channel 101 is located on one side of the heat exchange flow channel group 200 along the second direction Y.

[0116] It can be understood that the liquid inlet 1011 is located on one side of the heat exchange flow channel group 200 along the second direction Y, which can reduce the difficulty of arranging the liquid inlet 1011, reduce the processing difficulty of the heat exchange assembly 10, and improve the refrigerant conveying efficiency between the liquid inlet 1011 and the liquid inlet flow channel 101, thereby improving the practicability of the heat exchange assembly 10.

[0117] The liquid outlet 1021 of the liquid outlet flow channel 102 is located on one side of the heat exchange flow channel group 200 along the second direction Y.

[0118] It can be understood that the liquid outlet 1021 is located on one side of the heat exchange flow channel group 200 along the second direction Y, which can reduce the space occupation of the liquid outlet flow channel 102, reduce the processing cost of the heat exchange assembly 10, and reduce the occurrence of the heat concentration of the liquid outlet flow channel 102 causing the surface temperature of the heat exchange assembly 10 to rise.

[0119] The liquid inlet 1011 of the liquid inlet flow channel 101 and the liquid outlet 1021 of the liquid outlet flow channel 102 are located on the same side of the heat exchange flow channel group 200 along the second direction Y.

[0120] It can be understood that the liquid inlet 1011 of the liquid inlet flow channel 101 and the liquid outlet 1021 of the liquid outlet flow channel 102 are located on the same side of the heat exchange flow channel group 200 along the second direction Y, which can reduce the connection difficulty of the liquid inlet 1011 and the liquid outlet 1021 of the heat exchange assembly 10 connecting the air conditioning system, thereby improving the installation efficiency of the heat exchange assembly 10.

[0121] The liquid inlet 1011 of the liquid inlet flow channel 101 and the liquid outlet 1021 of the liquid outlet flow channel 102 are located on the same side of the heat exchange flow channel group 200 along the first direction X.

[0122] It can be understood that the liquid inlet 1011 of the liquid inlet flow channel 101 and the liquid outlet 1021 of the liquid outlet flow channel 102 are located on the same side of the heat exchange flow channel group 200 along the first direction X, which can reduce the connection difficulty of the liquid inlet 1011 and the liquid outlet 1021 of the heat exchange assembly 10 connecting the air conditioning system, thereby improving the installation efficiency of the heat exchange assembly 10.

[0123] It should be noted that along the second direction Y, the second flow channel part 1023 and the liquid inlet 1011 are located on the same side of the heat exchange flow channel group 200 along the second direction Y, and the port of the second flow channel part 1023 close to the liquid inlet 1011 forms the liquid outlet 1021.

[0124] It can be understood that, along the second direction Y, the second flow channel part 1023 and the liquid inlet 1011 are located on the same side of the heat exchange flow channel group 200 along the second direction Y, which can reduce the connection difficulty of the liquid inlet 1011 and the liquid outlet 1021 of the heat exchange assembly 10 to the air conditioning system, thereby improving the installation efficiency of the heat exchange assembly 10. The port of the second flow channel part 1023 close to the liquid inlet 1011 forms the liquid outlet 1021, which can reduce the space occupation of the liquid inlet 1011 and the liquid outlet 1021, thereby reducing the space occupation of the heat exchange assembly 10, so as to realize the reduction of the volume of the heat exchange assembly 10.

[0125] The liquid inlet 1011 of the liquid inlet flow channel 101 and the liquid outlet 1021 of the liquid outlet flow channel 102 provided by the embodiment of the present application are located on the opposite sides of the heat exchange flow channel group 200 along the second direction Y.

[0126] It should be noted that the surface temperature of the liquid inlet 1011 of the liquid inlet flow channel 101 is lower than the surface temperature of the liquid outlet 1021 of the liquid outlet flow channel 102.

[0127] It can be understood that, along the second direction Y, the second flow channel part 1023 and the liquid inlet 1011 are located on the same side of the heat exchange flow channel group 200 along the second direction Y, which can reduce the connection difficulty of the liquid inlet 1011 and the liquid outlet 1021 of the heat exchange assembly 10 to the air conditioning system, thereby improving the installation efficiency of the heat exchange assembly 10. The port of the second flow channel part 1023 close to the liquid inlet 1011 forms the liquid outlet 1021, which can reduce the space occupation of the liquid inlet 1011 and the liquid outlet 1021, thereby reducing the space occupation of the heat exchange assembly 10, so as to realize the reduction of the volume of the heat exchange assembly 10.

[0128] The heat exchange flow channel group 200 provided by the embodiment of the present application has a plurality of heat exchange flow channel groups 200 arranged along the first direction X.

[0129] It can be understood that increasing the number of heat exchange flow channels can adapt to the heat dissipation of multiple battery groups 20, thereby improving the practicability of the heat exchange assembly 10.

[0130] The plurality of current collection flow channel groups 100 correspond one-to-one to the plurality of heat exchange flow channel groups 200.

[0131] It can be understood that increasing the number of current collection flow channel groups 100 can improve the delivery volume of the refrigerant of the current collection flow channel group 100, thereby improving the heat dissipation effect of the battery group 20, and the one-to-one correspondence between the plurality of current collection flow channel groups 100 and the plurality of heat exchange flow channel groups 200 can improve the heat exchange efficiency between the current collection flow channel group 100 and the heat exchange flow channel group 200, thereby reducing the surface temperature of the heat exchange assembly 10, so as to protect the battery group 20.

[0132] The plurality of heat exchange flow channel groups 200 provided by the embodiments of the present application include a first heat exchange flow channel group and a second heat exchange flow channel group, and the first heat exchange flow channel group and the second heat exchange flow channel group are arranged along a first direction X.

[0133] It can be understood that the first heat exchange flow channel group and the second heat exchange flow channel group are arranged along the first direction X, which can increase the setting area of the first heat exchange flow channel group and the second heat exchange flow channel group, thereby increasing the contact area of the battery pack 20 and the heat exchange assembly 10, and improving the practicability of the heat exchange assembly 10.

[0134] In the heat exchange assembly 10 provided by the embodiments of the present application, along the first direction X, the liquid inlet flow channel 101 of the first heat exchange flow channel group and the liquid inlet flow channel 101 of the second heat exchange flow channel group are located on the side where the first heat exchange flow channel group and the second heat exchange flow channel group are close to each other.

[0135] It can be understood that, along the first direction X, the liquid inlet flow channel 101 of the first heat exchange flow channel group and the liquid inlet flow channel 101 of the second heat exchange flow channel group are located on the side where the first heat exchange flow channel group and the second heat exchange flow channel group are close to each other, which can reduce the arrangement difficulty of the liquid inlet flow channel 101, thereby reducing the processing difficulty of the heat exchange assembly 10, and improving the processing efficiency of the heating plate.

[0136] The liquid inlet flow channel 101 of the first heat exchange flow channel group and the liquid inlet flow channel 101 of the second heat exchange flow channel group are in communication with each other in the embodiments of the present application.

[0137] It can be understood that the liquid inlet flow channel 101 of the first heat exchange flow channel group and the liquid inlet flow channel 101 of the second heat exchange flow channel group are in communication with each other, which can reduce the arrangement difficulty between the liquid inlet flow channel of the first heat exchange flow channel group and the liquid inlet flow channel 101 of the second heat exchange flow channel group, thereby reducing the processing difficulty of the heat exchange assembly 10, and improving the conveying efficiency of the refrigerant in the liquid inlet flow channel of the first heat exchange flow channel group and the liquid inlet flow channel 101 of the second heat exchange flow channel group, thereby improving the cooling efficiency of the heat exchange assembly 10.

[0138] It should be noted that, along the first direction X, the liquid outlet flow channel 102 of the first heat exchange flow channel group is located on the side of the first heat exchange flow channel group away from the second heat exchange flow channel group; and the liquid outlet flow channel 102 of the second heat exchange flow channel group is located on the side of the second heat exchange flow channel group away from the first heat exchange flow channel group.

[0139] It can be understood that, along the first direction X, the liquid outlet flow channel 102 of the first heat exchange flow channel group is located on the side of the first heat exchange flow channel group away from the second heat exchange flow channel group, and the liquid outlet flow channel 102 of the second heat exchange flow channel group is located on the side of the second heat exchange flow channel group away from the first heat exchange flow channel group, which can reduce the mutual interference between the liquid outlet flow channel 102 of the first heat exchange flow channel group and the liquid outlet flow channel 102 of the second heat exchange flow channel group, so as to reduce the heat accumulation of the heat exchange assembly 10, thereby improving the safety performance of the battery pack 20, and reducing the resistance of the liquid outlet flow channel 102, thereby improving the cooling efficiency of the battery pack 20.

[0140] It should be noted that the flow channel arrangement of the two heat exchange flow channel groups 200 in the same first direction is the same.

[0141] It can be understood that the flow channel arrangement of the two heat exchange flow channel groups 200 in the same first direction is the same, which can reduce the difficulty of opening the two heat exchange flow channel groups 200, thereby improving the processing efficiency of the heat exchange assembly.

[0142] It should be noted that the flow channel arrangement of the two heat exchange flow channel groups 200 in the same direction is symmetrical.

[0143] It can be understood that the flow channel arrangement of the two heat exchange flow channel groups 200 in the same direction is symmetrical, which can reduce the difficulty of opening the two heat exchange flow channel groups 200, thereby improving the processing efficiency of the heat exchange assembly.

[0144] The liquid inlet flow channel 101, one of the plurality of heat exchange flow channel groups 200, and the liquid outlet flow channel 102 are sequentially communicated to form a first flow path.

[0145] It can be understood that, after the refrigerant passes through the liquid inlet 1011 and enters the liquid inlet flow channel 101, and passes through one heat exchange flow channel group 200, the refrigerant is guided to the liquid outlet 1021 after passing through the liquid outlet flow channel 102 to form a first flow path. In the first flow path, on the heat exchange assembly 10, the battery pack 20 exchanges heat with the refrigerant in the heat exchange flow channel group 200, so that the surface temperature of the battery pack 20 is reduced, and the internal temperature of the refrigerant in the same heat exchange flow channel group 200 is increased, so that the internal temperature of the refrigerant entering the liquid outlet flow channel 102 is higher than that of the refrigerant in the liquid inlet flow channel 101.

[0146] The liquid inlet flow channel 101, one of the plurality of heat exchange flow channel groups 200, and the liquid outlet flow channel 102 are sequentially communicated to form a first flow path.

[0147] It can be understood that after the refrigerant passes through the inlet port 1011 and enters the inlet flow channel 101, and then passes through another heat exchange flow channel group 200 and then passes through the outlet flow channel 102 and is guided to the outlet port 1021 to form a second flow path, in the second flow path, on the heat exchange assembly 10, the battery pack 20 exchanges heat with the refrigerant in the other heat exchange flow channel group 200, so that the surface temperature of the battery pack 20 is reduced, and the internal temperature of the refrigerant in the same heat exchange flow channel group 200 is correspondingly increased, so that the internal temperature of the refrigerant entering the outlet flow channel 102 is higher than that of the refrigerant in the inlet flow channel 101.

[0148] The embodiments of the present application provide that the part of the first flow path and the part of the second flow path are mutually multiplexed.

[0149] It can be understood that the mutual multiplexing of the part of the first flow path and the part of the second flow path can reduce the difficulty of opening the first flow path and the second flow path, and can reduce the space occupation of the first flow path and the second flow path, thereby reducing the setting volume of the heat exchange assembly 10.

[0150] It should be noted that the mutually multiplexed part of the first flow path and the second flow path is one of the part of the inlet flow channel 101, the inlet port 1011, the part of the outlet flow channel 102, and the outlet port 1021, or a combination of multiple thereof, which is not limited herein.

[0151] The embodiments of the present application provide that the first flow path has a first length, and the second flow path has a second length; the total length of the first length is equal to the total length of the second length.

[0152] It can be understood that the total length of the first length is equal to the total length of the second length, which can avoid the uneven flow distribution caused by the different lengths of the plurality of heat exchange flow channel groups 200, thereby making the overall pressure drop of the plurality of heat exchange flow channel groups 200 the same, thereby improving the heat exchange capacity of the heat exchange assembly 10.

[0153] The embodiments of the present application provide that the heat exchange flow channel group 200 includes a plurality of heat exchange flow channels arranged along the second direction Y, and the plurality of heat exchange flow channels are used to indirectly or directly contact heat exchange with the plurality of battery cells in the battery pack 20 one by one.

[0154] It can be understood that increasing the number of heat exchange flow channels can improve the heat exchange effect between the heat exchange flow channels and the battery pack 20 to reduce the surface temperature of the battery pack 20, and the plurality of heat exchange flow channels are used to indirectly or directly contact heat exchange with the plurality of battery cells in the battery pack 20 one by one, which can protect the battery cells in the battery pack 20.

[0155] It should be noted that the heat exchange flow channel indirectly contacts heat exchange with the plurality of battery cells in the battery pack 20 one by one, and the heat exchange flow channel can be arranged on the vapor chamber, or the shell of the battery pack 20, or other components that can accommodate the heat exchange flow channel. The plurality of battery cells in the battery pack 20 contact the vapor chamber, the shell or other components, so that the heat exchange flow channel indirectly contacts heat exchange with the plurality of battery cells in the battery pack 20 one by one.

[0156] The heat exchange flow channel provided by the embodiment of the present application comprises: a first branch flow channel 201 and a second branch flow channel 202 connected in sequence. In the flow direction of the fluid, one end of the first branch flow channel 201 away from the second branch flow channel 202 is in communication with the liquid inlet flow channel 101. In the flow direction of the fluid, one end of the second branch flow channel 202 away from the first branch flow channel 201 is in communication with the liquid outlet flow channel 102.

[0157] It can be understood that the refrigerant in the liquid inlet flow channel 101 can enter the first branch flow channel 201 and the second branch flow channel 202 in sequence, so that the refrigerant can be transported to the first branch flow channel 201 and the second branch flow channel 202 after passing through the liquid inlet flow channel 101, and then guided out through the liquid outlet flow channel 102, thereby completing the transportation of the refrigerant. The first branch flow channel 201 is arranged to guide the refrigerant to the second branch flow channel 202. The arrangement of the second branch flow channel 202 can increase the heat exchange area between the heat exchange flow channel and the battery pack 20, thereby protecting the battery pack 20.

[0158] The first branch flow channel 201 provided by the embodiment of the present application extends in the second direction Y.

[0159] It can be understood that the first branch flow channel 201 extends in the second direction Y, so that the refrigerant can flow in the arrangement direction of the two pole pieces of the battery pack 20, thereby increasing the heat contact area between the heat exchange flow channel and the battery pack 20, and protecting the battery pack 20.

[0160] The first branch flow channel 201 provided by the embodiment of the present application is provided with two, and the liquid flow directions of the two first branch flow channels 201 are opposite in the second direction Y.

[0161] It can be understood that the liquid flow directions of the two first branch flow channels 201 are opposite in the second direction Y, so that the refrigerant can be transported to both ends of one battery pack 20 in the second direction Y. In the battery pack 20, the connection position of the battery cell and the pole piece generates a large amount of heat. Using two first branch flow channels 201 to transport the refrigerant to the connection position of the battery cell and the pole piece respectively can reduce the generation of heat at the connection position of the battery cell and the pole piece, thereby protecting the battery pack 20.

[0162] It should be noted that, in the case of two first diversion flow channels 201, two second diversion flow channels 202 are provided, and the two second diversion flow channels 202 and the two first diversion flow channels 201 are one-to-one corresponding.

[0163] It can be understood that the one-to-one correspondence between the two second diversion flow channels 202 and the two first diversion flow channels 201 can enable the first diversion flow channel 201 and the second diversion flow channel 202 to simultaneously transport refrigerant to both sides of the second direction Y, thereby achieving heat dissipation of multiple battery cells in one battery pack 20 to protect the multiple battery cells in one battery pack 20.

[0164] It should be noted that the second diversion flow channel 202 is provided with two, and the two second diversion flow channels 202 are connected to the same first diversion flow channel 201 away from one end of the liquid inlet channel 101.

[0165] It can be understood that the two second diversion flow channels 202 are connected to the same first diversion flow channel 201 away from one end of the liquid inlet channel 101, which can increase the flow area between the first diversion flow channel 201 and the second diversion flow channel 202, so that the flow resistance of the refrigerant is reduced, thereby improving the operation stability of the heat exchange assembly 10.

[0166] It should be noted that, along the second direction Y, the two second diversion flow channels 202 are arranged at intervals.

[0167] It can be understood that, along the second direction Y, the two second diversion flow channels 202 are arranged at intervals, which can reduce the occurrence of mutual interference between the two diversion flow channels, thereby reducing the occurrence of turbulent flow inside the refrigerant, to improve the operation stability of the heat exchange assembly 10.

[0168] The second diversion flow channel 202 provided by the embodiment of the present application comprises a plurality of flow channel segments connected in sequence, and the plurality of flow channel segments are arranged at intervals along the second direction Y.

[0169] It can be understood that increasing the number of flow channel segments can increase the heat exchange area between the second diversion flow channel 202 and the battery pack 20, thereby reducing the surface temperature of the battery pack 20.

[0170] It should be noted that, along the second direction Y, the most end flow channel segment in the same heat exchange flow channel is connected to the first diversion flow channel 201.

[0171] It can be understood that, in the second direction Y, the most end flow channel section in the same heat exchange flow channel communicates with the first branch flow channel 201, which can reduce the connection difficulty between the second branch flow channel 202 and the first branch flow channel 201, and the second branch flow channel 202 can cover multiple battery cells in the battery pack, thereby reducing the temperature unevenness of multiple different positions in one battery pack 20, and protecting the battery pack 20.

[0172] It should be noted that the flow channel section communicating with the first branch flow channel 201 is arranged in the first direction X.

[0173] It should be noted that the multiple battery cells in one battery pack 20 are arranged in the first direction X, so that one flow channel section can exchange heat with multiple battery cells, thereby improving the heat exchange efficiency of the heat exchange assembly.

[0174] It can be understood that the flow channel section communicating with the first branch flow channel 201 is arranged in the first direction X, so that the second branch flow channel 202 can cover multiple battery cells in the battery pack, thereby reducing the temperature unevenness of multiple different positions in one battery pack 20, and protecting the battery pack 20.

[0175] It should be noted that the flow channel section communicating with the liquid outlet flow channel 102 is located in the second branch flow channel and is in the middle of the second direction.

[0176] It should be noted that the battery cells in one battery pack are arranged in the second direction, and the flow channel section communicating with the liquid outlet flow channel 102 is located in the second branch flow channel and is in the middle of the second direction, so that the flow channel section communicating with the liquid outlet flow channel 102 corresponds to the middle of the battery cells and exchanges heat with the middle of the battery cells.

[0177] In the related art, when the battery cells are working, the middle temperature of the battery cells is lower than the temperature of both ends of the battery cells.

[0178] It can be understood that, when the heat exchange flow channel group 200 exchanges heat with the battery pack 20, the flow channel section communicating with the first branch flow channel 201 is used to exchange heat with both ends of the battery cells, and the flow channel section communicating with the liquid outlet flow channel 102 is used to exchange heat with the middle of the battery cells. Therefore, the heat exchange effect on the battery pack 20 can be improved.

[0179] Further, the embodiment of the present application provides that each heat exchange flow channel includes at least two liquid inlet ends and liquid outlet ends, the two liquid inlet ends are arranged at one end of the heat exchange flow channel in the first direction, and the liquid outlet end is arranged at the other end of the heat exchange flow channel in the first direction, wherein the two liquid outlet ends are respectively arranged at both ends of the second branch flow channel in the second direction.

[0180] It can be understood that generally, the battery cell extends along the second direction, and the positive pole and the negative pole are arranged at the two ends along the second direction respectively, so that when the battery cell is in a charging or discharging state, the heat generation of the two ends of the battery cell along the second direction relative to the middle part of the battery cell is large, and therefore, by arranging the at least two liquid inlet ends and the at least one liquid outlet end, and arranging the liquid inlet ends and the liquid outlet ends at the two ends along the first direction and arranging the two liquid inlet ends at the two ends along the second direction, the second shunt flow channel 202 can cover multiple battery cells in the battery pack, and then cool the middle part of the battery cell after cooling the two ends of the battery cell, so as to enhance the cooling effect of the two ends, thereby reducing the occurrence of temperature non-uniformity at different positions in one battery pack 20, so as to protect the battery pack 20.

[0181] It should be noted that the flow channel section in communication with the liquid outlet flow channel is arranged along the first direction.

[0182] It can be understood that the flow channel section in communication with the liquid outlet flow channel is arranged along the first direction, which can reduce the flow resistance between the second shunt flow channel 202 and the liquid outlet flow channel 102, thereby improving the operation stability of the heat exchange assembly 10.

[0183] It should be noted that the first shunt flow channel 201 is located on the first side of the second shunt flow channel 202 along the first direction X.

[0184] It can be understood that the first shunt flow channel 201 is located on the first side of the second shunt flow channel 202 along the first direction X, which can reduce the connection difficulty between the first shunt flow channel 201 and the liquid outlet flow channel 102, and can shorten the travel length between the first shunt flow channel 201 and the liquid outlet flow channel 102, thereby reducing the processing cost of the heat exchange assembly 10.

[0185] It should be noted that along the second direction Y away from the liquid inlet 1011, the number of the second shunt flow channels 202 of the plurality of heat exchange flow channels increases, or in other words, along the second direction Y, the number of the second shunt flow channels 202 on the side relatively far away from the liquid inlet 1011 is greater than or equal to the number of the second shunt flow channels 202 on the side relatively close to the liquid inlet 1011.

[0186] It can be understood that along the second direction Y, the number of the second shunt flow channels 202 on the side relatively far away from the liquid inlet 1011 is greater than or equal to the number of the second shunt flow channels 202 on the side relatively close to the liquid inlet 1011, which can make the flow resistance of different heat exchange flow channels along the second direction Y approach the same, thereby improving the operation stability of the heat exchange assembly.

[0187] It should be noted that, along the second direction Y, the arrangement of the part flow channels of the heat exchange channels on the side away from the liquid inlet 1011 is the same as that on the side close to the liquid inlet 1011.

[0188] It can be understood that, along the second direction Y, the arrangement of the part flow channels of the heat exchange channels on the side away from the liquid inlet 1011 is the same as that on the side close to the liquid inlet 1011. The difficulty of arranging the flow channels of the heat exchange channels can be reduced, thereby improving the processing efficiency of the heat exchange assembly.

[0189] It should be noted that the arrangement of the part flow channels of the two heat exchange channels can be the same in shape, or the arrangement of the part flow channels of the two heat exchange channels can be the same in gap or length, which is not limited herein and can be selected according to actual use requirements.

[0190] The liquid inlet flow channel 101 provided by the embodiment of the present application further includes a main flow channel 1012, one end of the main flow channel 1012 forms a liquid inlet 1011, and the other end of the main flow channel 1012 away from the liquid inlet 1011 is respectively communicated with a plurality of heat exchange channels.

[0191] It can be understood that the one end of the main flow channel 1012 forms the liquid inlet 1011, which can reduce the processing difficulty between the liquid inlet 1011 and the main flow channel 1012, thereby improving the processing efficiency of the heat exchange assembly 10. The other end of the main flow channel 1012 away from the liquid inlet 1011 is respectively communicated with a plurality of heat exchange channels, which can reduce the flow resistance between the heat exchange channels and the main flow channel 1012, thereby improving the conveying efficiency of the refrigerant and improving the safety and stability of the heat exchange assembly 10.

[0192] The liquid inlet flow channel 101 provided by the embodiment of the present application further includes a sub-flow channel 1013, the liquid inlet end of the sub-flow channel 1013 is communicated with the main flow channel 1012, and the liquid outlet end of the sub-flow channel 1013 is communicated with the first sub-flow channel 201 of the plurality of heat exchange channels. The heat exchange channel communicated with the sub-flow channel 1013 is located in the corresponding heat exchange channel group 200 and is closer to the side of the liquid inlet 1011 along the second direction Y.

[0193] It can be understood that the sub-flow passage 1013 can guide the refrigerant in the main flow passage 1012 to the first sub-flow passage 201, and the heat exchange flow passage communicated with the sub-flow passage 1013 is located in the corresponding heat exchange flow passage group 200, which is closer to the liquid inlet 1011 side along the second direction Y, which can reduce the flow of the heat exchange flow passage group 200 closer to the liquid inlet 1011 side directly connected with the main pipe, resulting in the flow of the heat exchange flow passage group 200 closer to the liquid inlet 1011 side being larger, and the flow of the heat exchange flow passage group 200 farther away from the liquid inlet 1011 side being smaller, resulting in the occurrence of uneven flow between the plurality of heat exchange flow passage groups 200, thereby protecting the heat exchange assembly 10, and reducing the occurrence of uneven temperature of the plurality of heat exchange flow passage groups 200 of the heat exchange assembly 10.

[0194] It should be noted that the sub-flow passage 1013 extends along the second direction Y, and the liquid inlet end is located on the side of the liquid outlet end away from the liquid inlet 1011 along the second direction Y.

[0195] It can be understood that the sub-flow passage 1013 extends along the second direction Y, so that the sub-flow passage 1013 is communicated with the heat exchange flow passage group 200 closer to the liquid inlet 1011 side along the second direction Y, and the liquid inlet end is located on the side of the liquid outlet end away from the liquid inlet 1011, which can reduce the difficulty of communication between the sub-flow passage 1013 and the heat exchange flow passage group 200 closer to the liquid inlet 1011 side.

[0196] It should be noted that the liquid outlet end is provided with a plurality of liquid outlet ends, which are arranged at intervals along the second direction Y.

[0197] It can be understood that increasing the number of liquid outlet ends can make the sub-flow passage 1013 communicate with a plurality of different heat exchange flow passages, thereby improving the conveying efficiency of the sub-flow passage 1013, and reducing the flow resistance of the heat exchange assembly.

[0198] It should be noted that in the corresponding communicated heat exchange flow passage group 200 and the liquid inlet flow passage 101, the first sub-flow passage 201 of a portion of the heat exchange flow passage farther away from the liquid inlet 1011 side along the second direction Y is communicated with the main flow passage 1012.

[0199] It can be understood that the first sub-flow passage 201 of the heat exchange passage of the part far away from the liquid inlet 1011 side in the second direction Y is in communication with the main flow passage 1012, which can make the delivery of the refrigerant of the heat exchange passage far away from the liquid inlet 1011 side more stable, so that the surface temperature of the heat exchange passage group 200 far away from the liquid inlet 1011 side and the surface temperature of the heat exchange passage group 200 close to the liquid inlet 1011 side tend to be consistent, thereby making the temperature of the plurality of heat exchange passage groups 200 of the heat exchange assembly 10 more uniform.

[0200] It should be noted that the main flow passage 1012 extends in the second direction Y, and the communication position of the sub-flow passage 1013 and the main flow passage 1012 is located at the middle section of the main flow passage 1012 in the second direction Y.

[0201] It should be noted that the middle section of the main flow passage 1012 in the second direction Y corresponds to the middle section of the heat exchange passage group 200 in the second direction Y.

[0202] It should be noted that the middle section of the main flow passage 1012 in the second direction Y can be the center of symmetry of the main flow passage 1012.

[0203] It should be noted that the middle section of the heat exchange passage group 200 in the second direction Y can be the center of symmetry of the heat exchange passage group 200.

[0204] It can be understood that the communication position of the sub-flow passage 1013 and the main flow passage 1012 is located at the middle section of the main flow passage 1012 in the second direction Y, which can reduce the occurrence of flow unevenness between the main flow passage 1012, the sub-flow passage 1013 and the heat exchange passage group 200.

[0205] It should be noted that the communication position of the sub-flow passage 1013 and the main flow passage 1012 corresponds to the middle section of the heat exchange passage group 200 in the second direction Y, which can reduce the installation difficulty between the heat exchange passage group 200 and the plurality of battery groups 20, thereby reducing the corresponding difficulty between the heat exchange assembly 10 and the plurality of battery groups 20, thereby improving the operation stability of the heat exchange assembly 10.

[0206] It should be noted that the main flow passage 1012 is located on the side of the sub-flow passage 1013 away from the battery group 20 in the first direction X.

[0207] It can be understood that the main flow passage 1012 is located on the side of the sub-flow passage 1013 away from the battery group 20 in the first direction X, which can reduce the occurrence of uneven surface temperature of the battery group 20 caused by direct heat exchange between the main flow passage 1012 and the battery group 20, thereby protecting the battery group 20.

[0208] It can be understood that the liquid outlet flow passage 102 is in communication with the second sub-flow passage 202.

[0209] It should be noted that the liquid outlet flow channel 102 and the second branch flow channel 202 are communicated, so that the refrigerant in the second branch flow channel 202 can be guided to the liquid outlet flow channel 102, thereby reducing the occurrence of heat concentration on the second branch flow channel 202, thereby reducing the reverse heat exchange between the heat exchange assembly 10 and the battery pack 20 to send to the battery pack 20 for safety protection.

[0210] As shown in Figure 3 The embodiment of the application provides a battery pack, which comprises the battery pack 20 and the heat exchange assembly 10 provided by any of the above embodiments.

[0211] It should be noted that the battery pack 20 is provided with a plurality of

[0212] It can be understood that increasing the number of battery packs 20 can improve the output power of the battery pack.

[0213] It should be noted that the arrangement mode of the plurality of battery packs 20 can be that the plurality of battery packs 20 are arranged at intervals along the first direction X, or the plurality of battery packs 20 are arranged at intervals along the second direction Y, or part of the plurality of battery packs 20 are arranged at intervals along the first direction X, and part of the plurality of battery packs 20 are arranged at intervals along the second direction Y, which is not limited here and can be selected according to actual use requirements.

[0214] It can be understood that the arrangement mode of the battery pack 20 is any of the above, which can reduce the processing difficulty of the battery pack, thereby improving the installation efficiency of the battery pack.

[0215] It should be noted that one battery pack 20 comprises a plurality of battery cells, and the battery cells are arranged in extension along the second direction Y.

[0216] It can be understood that the battery cells arranged in extension along the second direction Y can make the two ends of the battery cells with high heat generation communicate with the flow channel segments of the liquid outlet flow channel 102 respectively for heat exchange, so as to protect the battery cells.

[0217] It should be noted that the battery cell has a positive electrode end and a negative electrode end, and the positive electrode end and the negative electrode end are arranged at the two ends of the battery cell along the second direction.

[0218] It can be understood that the arrangement of the positive electrode end and the negative electrode end of the battery cell can match the flow channel layout of the heat exchange assembly, thereby reducing the temperature difference between the positive and negative electrode ends of the battery pack 20 and the middle part of the battery pack 20, thereby improving the performance of the battery pack.

[0219] It should be noted that the battery cell is provided with a plurality of battery cells, and the plurality of battery cells are arranged along the first direction.

[0220] It can be understood that increasing the number of battery cells can improve the capacity of the battery pack 20.

[0221] The embodiment of the present application also provides a power utilization device, comprising a power utilization apparatus and the battery pack described in any of the above embodiments, and the battery pack is used for providing electric energy for the power utilization apparatus.

[0222] The power utilization device in the embodiment of the present application can be a vehicle, for example: the vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. Correspondingly, the power utilization apparatus can be a driving mechanism of the vehicle, or a control system of the vehicle.

[0223] In addition, the power utilization device can also be other energy storage apparatuses, such as a mobile phone, a portable device, a notebook computer, an electric toy, an electric tool, a ship and a spacecraft, etc., wherein the spacecraft can include an airplane, a rocket, a space shuttle or a spaceship.

[0224] Since the power utilization device in the embodiment includes the battery pack described in any of the above embodiments, the power utilization device includes the battery pack structure and the advantages, and the embodiment will not be described here.

[0225] It should be noted that the "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like mentioned in the specification mean that the described embodiment can include a specific feature, structure or characteristic, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments described explicitly or implicitly.

[0226] Generally, the terms should be understood at least partly by the use in the context. For example, at least partly according to the context, the term "one or more" used in the text can be used to describe any feature, structure or characteristic of singular meaning, or can be used to describe a combination of features, structures or characteristics of plural meaning. Similarly, at least partly according to the context, terms such as "a" or "said" can be understood as conveying singular usage or conveying plural usage.

[0227] It should be easily understood that "on", "above" and "over" in the present application should be interpreted in the broadest way, so that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but also can include the meaning of "above" or "over something" without intermediate features or layers therebetween (i.e. directly on something).

[0228] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0229] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat exchange component, characterized in that, For heat exchange with the battery pack (20), the heat exchange assembly (10) includes: Manifold assembly (100); A heat exchange channel group (200) is connected to a manifold channel group (100); In the heat exchange assembly (10), only the heat exchange channel group (200) exchanges heat with the battery pack (20).

2. A heat exchange component according to claim 1, characterized in that, The confluence channel assembly (100) includes: Liquid inlet channel (101) is connected to the heat exchange channel group (200) and is disposed on the first side of the heat exchange channel group (200) along the first direction.

3. A heat exchange component according to claim 2, characterized in that, The confluence channel assembly (100) includes: The liquid outlet channel (102) is connected to the heat exchange channel group (200); and at least a portion of the liquid outlet channel (102) is disposed on the second side of the heat exchange channel group (200) along the first direction, wherein the first side and the second side are opposite sides.

4. A heat exchange component according to claim 3, characterized in that, The liquid inlet channel (101) extends along a second direction, and the first direction and the second direction intersect.

5. A heat exchange component according to claim 3, characterized in that, The liquid outlet channel (102) includes a first channel section (1022), which is located on the second side of the heat exchange channel group (200) along the first direction and extends along the second direction.

6. A heat exchange component according to claim 5, characterized in that, The liquid outlet channel (102) includes a second channel section (1023), which is connected to the first channel section (1022); the second channel section (1023) is located on the first side of the heat exchange channel group (200) along the second direction and extends along the first direction.

7. A heat exchange component according to claim 3, characterized in that, The inlet (1011) of the liquid inlet channel (101) is located on one side of the heat exchange channel group (200) along the second direction; And / or, the outlet (1021) of the liquid outlet channel (102) is located on one side of the heat exchange channel assembly (200) along the second direction.

8. A heat exchange component according to claim 7, characterized in that, The inlet (1011) of the inlet channel (101) and the outlet (1021) of the outlet channel (102) are located on the same side of the heat exchange channel group (200) along the second direction.

9. A heat exchange component according to claim 3, characterized in that, The inlet (1011) of the inlet channel (101) and the outlet (1021) of the outlet channel (102) are located on the same side of the heat exchange channel group (200) along the first direction.

10. A heat exchange component according to claim 6, characterized in that, Along the second direction, the second flow channel (1023) and the liquid inlet (1011) of the liquid inlet flow channel (101) are located on the same side of the heat exchange flow channel group (200) along the second direction; The second flow channel (1023) forms an outlet (1021) at the port near the inlet (1011).

11. A heat exchange component according to claim 7, characterized in that, The inlet (1011) of the inlet channel (101) and the outlet (1021) of the outlet channel (102) are located on opposite sides of the heat exchange channel group (200) along the second direction.

12. A heat exchange assembly according to any one of claims 1-11, characterized in that, There are multiple heat exchange channel groups (200), and the multiple heat exchange channel groups (200) are arranged along a first direction.

13. A heat exchange component according to claim 12, characterized in that, There are multiple manifold flow channel groups (100), and each of the multiple manifold flow channel groups (100) is connected to a multiple heat exchange flow channel group (200) in a one-to-one correspondence.

14. A heat exchange assembly according to claim 12, characterized in that, The plurality of heat exchange channel groups (200) include a first heat exchange channel group and a second heat exchange channel group, the first heat exchange channel group and the second heat exchange channel group being arranged along a first direction.

15. A heat exchange assembly according to claim 14, characterized in that, Along the first direction, the liquid inlet channel (101) of the first heat exchange channel group and the liquid inlet channel (101) of the second heat exchange channel group are located on the side of the first heat exchange channel group and the second heat exchange channel group that are close to each other.

16. A heat exchange assembly according to claim 15, characterized in that, The liquid inlet channel (101) of the first heat exchange channel group is interconnected with the liquid inlet channel (101) of the second heat exchange channel group.

17. A heat exchange assembly according to claim 14, characterized in that, Along the first direction, the liquid outlet channel (102) of the first heat exchange channel group is located on the side of the first heat exchange channel group away from the second heat exchange channel group; The liquid outlet channel (102) of the second heat exchange channel group is located on the side of the second heat exchange channel group away from the first heat exchange channel group.

18. A heat exchange assembly according to claim 12, characterized in that, The two heat exchange channel groups (200) located in the same first direction have the same channel arrangement; Alternatively, the flow channels of the two heat exchange channel groups (200) located in the same first direction are symmetrically arranged.

19. A heat exchange assembly according to claim 12, characterized in that, The liquid inlet channel (101), one of the plurality of heat exchange channel groups (200), and the liquid outlet channel (102) are connected in sequence to form a first flow path.

20. A heat exchange assembly according to claim 19, characterized in that, The liquid inlet channel (101), another of the plurality of heat exchange channel groups (200), and the liquid outlet channel (102) are connected in sequence to form a second flow path.

21. A heat exchange assembly according to claim 20, characterized in that, The first circulation path portion and the second circulation path portion are reused.

22. A heat exchange component according to claim 20, characterized in that, The first flow path has a first length along the path, and the second flow path has a second length along the path. The total length of the first friction length is equal to the total length of the second friction length.

23. A heat exchange component according to claim 12, characterized in that, The heat exchange channel group (200) includes multiple heat exchange channels, which are arranged along the second direction; The multiple heat exchange channels are used to indirectly or directly contact and exchange heat with the multiple cells in the battery pack (20).

24. A heat exchange component according to claim 3, characterized in that, The heat exchange channel includes a first branch channel (201) and a second branch channel (202) connected in sequence. Along the direction of fluid flow, the end of the first branch channel (201) away from the second branch channel (202) is connected to the inlet channel (101); Along the direction of fluid flow, the end of the second diversion channel (202) away from the first diversion channel (201) is connected to the liquid outlet channel (102).

25. A heat exchange assembly according to claim 24, characterized in that, The first diversion channel (201) extends along the second direction.

26. A heat exchange component according to claim 24, characterized in that, There are two first diversion channels (201), and the liquid flows in the two first diversion channels (201) in opposite directions along the second direction.

27. A heat exchange component according to claim 26, characterized in that, When there are two first diversion channels (201), there are two second diversion channels (202), and the two second diversion channels (202) and the two first diversion channels (201) are connected in a one-to-one correspondence.

28. A heat exchange component according to claim 24, characterized in that, There are two second diversion channels (202), and the two second diversion channels (202) are connected to the end of the same first diversion channel (201) away from the liquid inlet channel (101).

29. A heat exchange assembly according to claim 27 or 28, characterized in that, Along the second direction, two second diversion channels (202) are spaced apart.

30. A heat exchange component according to claim 24, characterized in that, The second diversion channel (202) includes multiple channel segments connected in sequence, and the multiple channel segments are arranged at intervals along the second direction.

31. A heat exchange component according to claim 30, characterized in that, Along the second direction, the outermost flow channel segment located in the same heat exchange channel is connected to the first branch flow channel (201).

32. A heat exchange component according to claim 31, characterized in that, The channel segment connected to the first diversion channel (201) extends along the first direction.

33. A heat exchange component according to claim 30, characterized in that, The flow channel segment that communicates with the liquid outlet flow channel (102) is located in the second diversion flow channel (202) at the middle of the second direction.

34. A heat exchange component according to claim 33, characterized in that, The flow channel segment that communicates with the liquid outlet flow channel (102) extends along the first direction.

35. A heat exchange component according to claim 24, characterized in that, The first diversion channel (201) is located on the first side of the second diversion channel (202) along the first direction.

36. A heat exchange component according to claim 23, characterized in that, Along the second direction away from the liquid inlet (1011), the number of second branch channels (202) of the plurality of heat exchange channels tends to increase.

37. A heat exchange component according to claim 35, characterized in that, Along the second direction, the partial flow channel arrangement of the heat exchange channel on the side relatively far from the liquid inlet (1011) is the same as the partial flow channel arrangement of the heat exchange channel on the side relatively close to the liquid inlet (1011).

38. A heat exchange component according to claim 24, characterized in that, The liquid inlet channel (101) further includes: Main channel (1012), one end of which forms liquid inlet (1011), and the other end of the main channel (1012) away from the liquid inlet (1011) is connected to a plurality of heat exchange channels respectively.

39. A heat exchange component according to claim 38, characterized in that, The liquid inlet channel (101) further includes: Sub-channel (1013), the liquid inlet end of the sub-channel (1013) is connected to the main channel (1012), and the liquid outlet end of the sub-channel (1013) is connected to the first branch channel (201) of the plurality of heat exchange channels; The heat exchange channel that communicates with the sub-channel (1013) is located in the corresponding heat exchange channel group (200) and is closer to the liquid inlet (1011) along the second direction.

40. A heat exchange component according to claim 39, characterized in that, The sub-channel (1013) extends along the second direction, and along the second direction, the liquid inlet is located on the side of the liquid outlet away from the liquid inlet (1011).

41. A heat exchange component according to claim 39, characterized in that, The liquid outlet is provided in multiple ways, and the multiple liquid outlets are spaced apart along the second direction.

42. A heat exchange component according to claim 39, characterized in that, In the corresponding connected heat exchange channel group (200) and the liquid inlet channel (101), a portion of the first branch channels (201) of the heat exchange channels, located further away from the liquid inlet (1011) along the second direction, are connected to the main channel (1012).

43. A heat exchange component according to claim 40, characterized in that, The main channel (1012) extends along the second direction, and the connection between the sub-channel (1013) and the main channel (1012) is located in the middle section of the main channel (1012) along the second direction.

44. A heat exchange assembly according to claim 40, characterized in that, Along the first direction, the main flow channel (1012) is located on the side of the sub-flow channel (1013) away from the battery pack (20).

45. A heat exchange assembly according to claim 31, characterized in that, The liquid outlet channel (102) and the second diversion channel (202) are connected.

46. ​​A heat exchange assembly according to claim 24, characterized in that, Each of the heat exchange channels includes at least two inlet ends and two outlet ends. The two inlet ends are located at one end of the heat exchange channel along the first direction, and the outlet ends are located at the other end of the heat exchange channel along the first direction. The two outlet ends are respectively located at both ends of the second branch channel along the second direction.

47. A battery pack, characterized in that, The device includes a battery pack (20) and a heat exchange assembly according to any one of claims 1-46, wherein the battery pack (20) is connected to the heat exchange assembly (10).

48. A battery pack according to claim 47, characterized in that, The battery pack (20) is provided with multiple units; The plurality of battery packs (20) are spaced apart along a first direction; And / or, multiple battery packs (20) are spaced apart along a second direction.

49. A battery pack according to claim 48, characterized in that, One of the battery packs (20) includes a cell arranged extending along the second direction; And / or, the battery cells are provided in multiple ways, and the multiple battery cells are arranged along the first direction.

50. A battery pack according to claim 49, characterized in that, The battery cell has a positive terminal and a negative terminal, which are respectively located at both ends of the battery cell along the second direction.

51. An electrical appliance, characterized in that, The device includes an electrical appliance and a battery pack according to any one of claims 47-50, wherein the battery pack is electrically connected to the electrical appliance and is used to provide electrical energy to the electrical appliance.

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