Heat exchange assembly and battery pack

Abstract

Disclosed in the present application are a heat exchange assembly and a battery pack. The heat exchange assembly comprises: a heat exchange plate, a current collector, and a connecting member, wherein a first cavity for circulation of a heat exchange medium is provided in the heat exchange plate; the current collector is connected to the heat exchange plate, and a second cavity in communication with the first cavity is provided in the current collector; the connecting member penetrates the current collector, and a flow guide port is provided on the connecting member; and a flow guide channel is provided inside the connecting member, the flow guide channel being in communication with the second cavity via at least a portion of the flow guide port. The maximum cross-sectional area of the flow guide port is S1 mm2, and the cross-sectional area of communication between the flow guide port and the flow guide channel or the second cavity is S2 mm2, satisfying: S1>S2. In this way, by covering a portion of the flow guide port on the connecting member, the magnitude of flow rate of the heat exchange medium in the heat exchange assembly can be changed, thereby enabling adjustment of the heat dissipation capacity of the heat exchange assembly to meet differentiated cooling requirements in various application scenarios.

Description

Heat exchange component and battery pack

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on March 8, 2024, with application number 202420468947.4 and invention name “A heat exchange component and battery pack”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the field of battery technology, and specifically relates to a heat exchange component and a battery pack. Background Art

[0003] With the rapid development of the new energy vehicle industry, the production and sales of power batteries, a core component of electric vehicles, have continued to rise. In the future, as consumer acceptance of electric vehicles continues to increase, the penetration rate of electric vehicles continues to rise, and the application areas of power batteries continue to expand, the demand for power batteries will usher in greater growth. Battery cells generate a large amount of heat during charging and vehicle operation. Because battery cells are densely stacked inside the battery pack, heat accumulates in the small, enclosed space of the battery pack. Dissipation in the central area of ​​the battery pack is relatively difficult, resulting in increased temperature differences between battery cells, ultimately reducing the charge and discharge efficiency of the battery cells. In severe cases, thermal runaway may occur, affecting the safety and life of the battery.

[0004] In the related art, liquid cooling plates are used to cool the battery cells in a battery pack. However, the liquid cooling plates in the related art cannot meet the differentiated cooling requirements within the battery pack.

[0005] Application Contents

[0006] The present application aims to provide a heat exchange assembly and a battery pack, which can solve the problem that the liquid cooling plate of the related art cannot meet the differentiated cooling requirements in the battery pack.

[0007] In order to solve the above technical problems, this application is implemented as follows:

[0008] In a first aspect, an embodiment of the present application provides a heat exchange assembly, comprising: a heat exchange plate, a current collector, and a connector;

[0009] The heat exchange plate is provided with a first cavity for the circulation of heat exchange medium; the collector is connected to the heat exchange plate, and the collector is provided with a second cavity connected to the first cavity; the connector is provided through the collector, and the connector is provided with a guide port; the connector is provided with a guide channel, and the guide channel is connected to the second cavity through the guide port; the maximum cross-sectional area of ​​the guide port is S1 mm 2 The connecting cross-sectional area between the guide port and the guide channel or the second cavity is S2 mm 2 , satisfying: S1>S2.

[0010] Optionally, the connecting member includes: a first connecting head and a second connecting head;

[0011] The first connector and the second connector are connected to each other, a first channel is provided in the first connector, a second channel is provided in the second connector, the first channel and the second channel are connected to each other to form the diversion channel, and the diversion port is formed on the first connector and the second connector.

[0012] Optionally, the connecting member includes: a first connecting head and a second connecting head;

[0013] The first connector and the second connector are connected to each other, a first channel is provided in the first connector, a second channel is provided in the second connector, the first channel and the second channel are connected to each other to form the diversion channel, and the diversion port is formed on the first connector.

[0014] Optionally, the connecting member includes: a first connecting head and a second connecting head;

[0015] The first connector and the second connector are connected to each other, a first channel is provided in the first connector, a second channel is provided in the second connector, the first channel and the second channel are connected to each other to form the diversion channel, and the diversion port is formed on the second connector.

[0016] Optionally, the first connecting head is provided with a first connecting part, the second connecting head is provided with a second connecting part, and the first connecting part and the second connecting part are socketed with each other; the side wall of the first connecting part is provided with a first opening connected to the first channel, and the side wall of the second connecting part is provided with a second opening connected to the second channel, and the first opening and the second opening are adapted to form the guide port.

[0017] Optionally, at least two first openings are circumferentially spaced apart on the first connecting portion, and at least one second opening is circumferentially spaced apart on the second connecting portion, and at least some of the first openings are adapted to the second openings to form the guide port.

[0018] Optionally, the first opening and the second opening are arranged along the circumference of the connecting member, and the first opening at least partially overlaps with the second opening to form the guide port.

[0019] Optionally, the first opening and the second opening are arranged along the length direction of the connecting member, and the first opening at least partially overlaps with the second opening to form the guide port.

[0020] Optionally, at least two of the first openings have different sizes.

[0021] Optionally, the current collector is provided with a first clamping portion, and the connecting member is provided with a second clamping portion, and the first clamping portion is clamped with the second clamping portion.

[0022] Optionally, the first clamping portion is one of a buckle and a slot, the second clamping portion is the other of the buckle and the slot, and the buckle is clamped with the slot.

[0023] Optionally, the connecting member is fixed to the current collector by welding.

[0024] Optionally, the connecting piece is an integrated structure.

[0025] Optionally, a plurality of the connecting members are provided, and the guide ports of the plurality of the connecting members have different sizes.

[0026] Optionally, a plurality of the current collectors and the connectors are provided, the plurality of current collectors are respectively connected to the heat exchange plates, and the plurality of connectors are respectively connected to the plurality of current collectors.

[0027] Optionally, a plurality of the current collectors are respectively arranged at both ends of the heat exchange plate along its length direction.

[0028] In a second aspect, an embodiment of the present application proposes a battery pack comprising: a battery cell, a conduit, and at least two heat exchange components as described above, wherein the connecting parts of two adjacent heat exchange components are connected through the conduit, and the battery cell is arranged between the heat exchange plates of the two adjacent heat exchange components.

[0029] Optionally, the connecting cross-sectional area between the guide port and the guide channel or the second cavity is S2 mm 2 , along the liquid inlet direction of the catheter, the S2 located at the front end is smaller than the S2 located at the rear end.

[0030] In an embodiment of the present application, a heat exchange plate, a fluid collector, and a connector are provided in the heat exchange assembly. Through the connector and the fluid collector, a heat exchange medium can be introduced into the heat exchange plate, or the heat exchange medium in the heat exchange plate can be discharged. The heat dissipation effect of the heat exchange plate is achieved through the flow of the heat exchange medium in the heat exchange plate. At the same time, a flow guide is provided on the connector, and different settings are made for S1 and S2, so that part of the flow guide is covered. This allows the size of the flow guide to be changed to change the flow rate of the heat exchange medium in the heat exchange assembly. This facilitates the flexible setting of the flow guide in the connector according to actual heat dissipation requirements, thereby adjusting the heat dissipation capacity of the heat exchange assembly and meeting the differentiated heat dissipation requirements of different application scenarios.

[0031] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] FIG1 is a schematic diagram of a heat exchange assembly according to an embodiment of the present application;

[0034] FIG2 is a schematic diagram of a partial structure of a heat exchange assembly according to an embodiment of the present application;

[0035] FIG3 is an exploded view of a connector and a current collector according to an embodiment of the present application;

[0036] FIG4 is a cross-sectional view of a heat exchange assembly at a current collector according to an embodiment of the present application;

[0037] FIG5 is a schematic diagram of a connector according to an embodiment of the present application;

[0038] FIG6 is a schematic diagram of a first connector according to an embodiment of the present application;

[0039] FIG7 is a schematic diagram of a second connector according to an embodiment of the present application;

[0040] FIG8 is a schematic diagram of a battery pack according to an embodiment of the present application.

[0041] Reference numerals:

[0042] 100: heat exchange assembly; 110: heat exchange plate; 111: first cavity; 120: current collector; 121: second cavity; 130: connector; 131: flow guide channel; 132: flow guide port; 140: first connector; 141: first connecting portion; 1411: first channel; 1412: first opening; 150: second connector; 151: second connecting portion; 1511: second channel; 1512: second opening; 161: first clamping portion; 162: second clamping portion; 200: battery cell; 300: conduit. Specific embodiments

[0043] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] The heat exchange assembly and battery pack provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0048] As shown in Figures 1 and 2, according to some embodiments of the present application, the heat exchange assembly 100 includes: a heat exchange plate 110, a fluid collector 120 and a connector 130. The heat exchange plate 110 is provided with a first cavity 111 for circulating a heat exchange medium; the fluid collector 120 is connected to the heat exchange plate 110, and the fluid collector 120 is provided with a second cavity 121 that communicates with the first cavity 111; the connector 130 is penetrated by the fluid collector 120, and a guide port 132 is provided on the connector 130; a guide channel 131 is provided in the connector 130, and the guide channel 131 is communicated with the second cavity 121 through the guide port 132.

[0049] Optionally, the maximum cross-sectional area of ​​the guide port 132 is S1 mm 2 The connecting cross-sectional area between the guide port 132 and the guide channel 131 or the second cavity 121 is S2 mm 2, satisfying: S1>S2.

[0050] In the embodiment of the present application, by providing a fixed-size flow guide port 132 on the side wall of the connector 130, when the flow rate of the heat exchange medium in the heat exchange assembly 100 needs to be changed, the flow guide port 132 on the connector 130 can be partially covered to reduce the size of the flow guide port 132 in the connector 130 that is actually connected to the second cavity 121. In other words, the cross-sectional area S2 connecting the flow guide port 132 with the flow guide channel 131 or the second cavity 121 is made smaller than the maximum cross-sectional area S1 of the flow guide port 132, thereby achieving the purpose of changing the flow rate of the heat exchange medium in the heat exchange assembly 100.

[0051] The maximum cross-sectional area S1 of the guide opening 132 refers to the initial maximum flow cross-sectional area of ​​the guide opening 132 provided in the connector 130. The cross-sectional area S2 of the connection between the guide opening 132 and the guide channel 131 or the second cavity 121 refers to the flow cross-sectional area after the guide opening 132 on the connector 130 is partially covered as needed.

[0052] In the embodiment of the present application, a heat exchange plate 110, a fluid collector 120, and a connector 130 are provided in the heat exchange assembly 100. Through the connector 130 and the fluid collector 120, a heat exchange medium can be introduced into the heat exchange plate 110 or discharged from the heat exchange plate 110, thereby achieving heat dissipation of the heat exchange plate 110 through the flow of the heat exchange medium within the heat exchange plate 110. At the same time, a guide port 132 is provided on the connector 130, and different settings S1 and S2 are provided so that part of the guide port 132 is covered. This allows the cross-sectional area of ​​the guide port 132 on the connector 130 to be changed, thereby changing the flow rate of the heat exchange medium in the heat exchange assembly 100. In this way, the size of the guide port 132 in the connector 130 can be flexibly set according to actual heat dissipation requirements to adjust the heat dissipation capacity of the heat exchange assembly 100 and meet the differentiated heat dissipation requirements of different application scenarios.

[0053] In addition, the connector 130 is passed through the current collector 120 and connected to external components through the connector 130. When subjected to external force, the external force directly acts on the connector 130, preventing the current collector 120 from being squeezed and deformed and affecting the flow of the heat exchange medium, thereby playing a supporting and protective role for the current collector 120.

[0054] In specific applications, the heat exchange component 100 in the present application can be used to perform differentiated heat dissipation on the battery cells 200 in the battery pack. By setting the size of the guide port 132 of the connector 130 in the heat exchange component 100, the flow rate of the heat exchange medium in the heat exchange component 100 can be changed, thereby adjusting the heat dissipation capacity of the heat exchange component 100 to achieve precise heat dissipation at different positions in the battery pack.

[0055] It is understood that, given a fixed structure of the heat exchange assembly 100, the greater the flow rate of the heat exchange medium within the heat exchange assembly 100, the greater its heat dissipation capacity. Conversely, the smaller the flow rate of the heat exchange medium within the heat exchange assembly 100, the weaker its heat dissipation capacity. Therefore, the heat dissipation capacity of the heat exchange assembly 100 can be varied by adjusting the flow rate of the heat exchange medium within the heat exchange assembly 100.

[0056] Specifically, the heat exchange assembly 100 includes a heat exchange plate 110, a current collector 120 and a connector 130. The heat exchange plate 110 is used to be thermally connected to the battery cell 200. A first cavity 111 is provided in the heat exchange plate 110. A heat exchange medium is introduced into the first cavity 111. The flow of the heat exchange medium can take away the heat generated by the battery cell 200 thermally connected to the heat exchange plate 110, thereby achieving heat dissipation for the battery cell 200.

[0057] The current collector 120 is connected to the heat exchange plate 110, and the second cavity 121 provided in the current collector 120 is in communication with the first cavity 111 of the heat exchange plate 110. A connector 130 is provided through the current collector 120, and a flow guide channel 131 is provided therein. A flow guide port 132 is provided on the sidewall of the connector 130. The flow guide channel 131 is connected to the second cavity 121 through at least a portion of the flow guide port 132. Specifically, a portion of the flow guide port 132 can connect the flow guide channel 131 and the second cavity 121, while the other portion is covered by the current collector 120.

[0058] In a specific application, the end of the connector 130 away from the current collector 120 can be connected to an external pipeline system so that a heat exchange medium can be injected into the guide channel 131 of the connector 130 through the external pipeline system. Then, the heat exchange medium flows through the guide channel 131, the guide port 132 and the second cavity 121 in sequence, and then enters the first cavity 111 of the heat exchange plate 110. The heat exchange medium completes heat exchange with the battery cell 200 in the heat exchange plate 110.

[0059] Furthermore, the size of the guide port 132 on the connector 130 can be changed. During actual use, the size of the guide port 132 can be changed to adjust the flow rate of the heat exchange medium flowing through the guide port 132, thereby changing the flow rate of the heat exchange medium in the entire heat exchange component 100, thereby changing the heat dissipation capacity of the heat exchange component 100.

[0060] It is understood that when the heat exchange assembly 100 is used in a battery pack having multiple battery cells 200, the actual temperature in different areas of the battery pack may vary. For example, the temperature near the center may be relatively high, while the temperature at the edges may be relatively low.

[0061] Therefore, in the heat exchange component 100 used for heat dissipation in the edge area, the size of the guide port 132 of the connector 130 can be reduced; and in the heat exchange component 100 used for heat dissipation in the middle area, the size of the guide port 132 of the connector 130 can be increased accordingly, thereby achieving differentiated heat dissipation in the battery pack.

[0062] It should be noted that the heat exchange medium may include liquid or gaseous media that can conduct heat, such as cooling water and thermal oil. The specific selection of the heat exchange medium can be selected according to actual needs, and the embodiments of the present application do not limit this.

[0063] In some embodiments, the connector 130 can be configured as an integrated structure, and the guide port 132 on the connector 130 can be an opening of a fixed structure opened on the side wall of the connector 130. When the size of the guide port 132 needs to be changed, the original opening can be partially covered to reduce the size of the opening.

[0064] In some embodiments, the heat exchange assembly 100 may include multiple connectors 130, each of which has a flow guide 132 of different sizes. The multiple connectors 130 may have the same or similar structures except for the flow guide 132. In this way, the heat exchange assembly 100 can be assembled by flexibly selecting connectors 130 with corresponding structures according to actual application scenarios to meet differentiated heat dissipation requirements.

[0065] In some embodiments, the current collector 120 and the connector 130 in the heat exchange assembly 100 can be provided in plurality, with the plurality of current collectors 120 respectively connected to the heat exchange plates 110 , and the plurality of connectors 130 respectively connected to the plurality of current collectors 120 .

[0066] During actual use, the heat exchange medium is introduced into the first cavity 111 of the heat exchange plate 110 through one or more of the multiple current collectors 120, and the heat exchange medium in the first cavity 111 of the heat exchange plate 110 is discharged through another one or more of the multiple current collectors 120, so as to realize the flow of the heat exchange medium in the heat exchange plate 110.

[0067] Specifically, multiple collectors 120 can be respectively arranged at opposite ends of the heat exchange plate 110. For example, multiple collectors 120 can be arranged at both ends of the heat exchange plate 110 along the length direction to increase the fluidity of the heat exchange medium in the heat exchange plate 110, thereby improving the heat dissipation effect of the heat exchange assembly 100.

[0068] Of course, multiple current collectors 120 can also be set on the same side of the heat exchange plate 110. The specific setting position of the current collector 120 on the heat exchange plate 110 can be flexibly set according to actual use requirements, and this application does not impose any restrictions here.

[0069] Optionally, as shown in Figures 3 to 5, the connecting member 130 includes a first connecting head 140 and a second connecting head 150; the first connecting head 140 and the second connecting head 150 are connected to each other, a first channel 1411 is provided in the first connecting head 140, and a second channel 1511 is provided in the second connecting head 150, the first channel 1411 and the second channel 1511 are connected to each other to form a guide channel 131, and the guide port 132 is formed on the first connecting head 140 and / or the second connecting head 150.

[0070] In the embodiment of the present application, the connector 130 is formed by the first connector 140 and the second connector 150 being docked together. The use of this split-structure connector 130 facilitates both the actual processing of the connector 130 and the assembly and disassembly of the connector 130 and the current collector 120. Furthermore, by providing the flow guide 132 on either the first connector 140 or the second connector 150, the size of the flow guide 132 can be adjusted by changing the mating structure of the first connector 140 and the second connector 150. In other embodiments, the flow guide 132 is provided on both the first connector 140 and the second connector 150.

[0071] Specifically, the first connector 140 and the second connector 150 can be connected to both sides of the current collector 120, respectively. One end of the first connector 140 is inserted into the second cavity 121 of the current collector 120 from one side of the current collector 120, and one end of the second connector 150 is inserted into the second cavity 121 of the current collector 120 from the other side of the current collector 120. The end of the first connector 140 and the end of the second connector 150 are butted against each other in the second cavity 121.

[0072] Furthermore, the guide port 132 can be provided at the portion of the first connector 140 located within the second cavity 121; or the guide port 132 can be provided at the portion of the second connector 150 located within the second cavity 121. Alternatively, both the first connector 140 and the second connector 150 can be provided with opening structures, and the two opening structures cooperate to form the guide port 132.

[0073] It should be noted that the specific location of the guide port 132 on the first connector 140 and the second connector 150 can be set according to actual needs, and this application does not impose any restrictions thereon.

[0074] Optionally, as shown in Figures 5 to 7, the first connecting head 140 is provided with a first connecting portion 141, the second connecting head 150 is provided with a second connecting portion 151, and the first connecting portion 141 and the second connecting portion 151 are socketed with each other; the side wall of the first connecting portion 141 is provided with a first opening 1412 connected to the first channel 1411, and the side wall of the second connecting portion 151 is provided with a second opening 1512 connected to the second channel 1511, and the first opening 1412 and the second opening 1512 are adapted to form a guide port 132.

[0075] In the embodiment of the present application, a first opening 1412 is provided on the first connection portion 141 of the first connector 140, and a second opening 1512 is provided on the second connection portion 151 of the second connector 150. The first connection portion 141 and the second connection portion 151 are mutually nested, and the first opening 1412 and the second opening 1512 cooperate to form the guide port 132. In this way, by adjusting the relative position of the first connection portion 141 and the second connection portion 151, the size of the guide port 132 actually formed by the first opening 1412 and the second opening 1512 can be changed, thereby adjusting the heat dissipation capacity of the heat exchange assembly 100.

[0076] Specifically, the connector 130 includes a first connector 140 and a second connector 150. The first connector 140 is provided with a first connecting portion 141, and the second connector 150 is provided with a second connecting portion 151. The first connecting portion 141 and the second connecting portion 151 are sleeved together, and before the connector 130 is fixedly connected to the current collector 120, the relative positions of the first connecting portion 141 and the second connecting portion 151 can be adjusted.

[0077] Furthermore, a first opening 1412 is provided on the side wall of the first connecting portion 141 , and a second opening 1512 is provided on the side wall of the second connecting portion 151 . The first opening 1412 and the second opening 1512 correspond to each other and cooperate with each other to form the guide port 132 .

[0078] During assembly and use, the first connection portion 141 of the first connector 140 and the second connection portion 151 of the second connector 150 can be respectively inserted into the second cavity 121 of the current collector 120, and the first connection portion 141 and the second connection portion 151 are sleeved. Furthermore, according to actual heat dissipation requirements, the relative positions of the first connector 140 and the second connector 150 are adjusted to change the matching structure of the first opening 1412 and the second opening 1512, thereby adjusting the size of the guide port 132 actually formed by the first opening 1412 and the second opening 1512. After completing the size adjustment of the guide port 132, the connector 130 and the current collector 120 are further fixed to increase the connection firmness and stability of the connector 130 and the current collector 120.

[0079] Optionally, the connector 130 is fixed to the current collector 120 by welding. By adopting the welding fixation method to achieve the fixed connection between the connector 130 and the current collector 120, the connection strength between the connector 130 and the current collector 120 is improved.

[0080] It should be noted that the connection member 130 and the current collector 120 may also be fixed by riveting, bonding, clamping or other methods. Those skilled in the art may choose according to actual needs, and the embodiments of the present application do not limit this.

[0081] Optionally, at least two first openings 1412 are circumferentially spaced apart on the first connection portion 141 , and at least one second opening 1512 is circumferentially spaced apart on the second connection portion 151 . At least some of the first openings 1412 match the second openings 1512 to form the guide port 132 .

[0082] In the embodiment of the present application, a plurality of first openings 1412 are provided along the circumference of the first connection portion 141 of the first connector 140, and at least one second opening 1512 is provided on the second connection portion 151 of the second connector 150. The first openings 1412 and the second openings 1512 cooperate with each other to form the guide port 132. This facilitates flexible adjustment of the coordination structure between the first openings 1412 and the second openings 1512, thereby adjusting the size of the guide port 132 and facilitating actual assembly and use.

[0083] 5 and 6 , two first openings 1412 are provided on the first connection portion 141 , and two second openings 1512 are provided on the second connection portion 151 . The first connection portion 141 and the second connection portion 151 are sleeved together, and the positions of the first openings 1412 and the second openings 1512 correspond to each other, thereby forming two guide ports 132 .

[0084] When the size of the guide port 132 needs to be changed, the relative positions of the first connecting portion 141 and the second connecting portion 151 are changed so that the first opening 1412 and the second opening 1512 are at least partially offset. In this way, the guide port 132 is formed by the overlapping portion of the first opening 1412 and the second opening 1512. By changing the size of the overlapping portion of the first opening 1412 and the second opening 1512, the size of the formed guide port 132 can be changed.

[0085] In some embodiments, multiple first openings 1412 may be provided on the first connecting portion 141, and the sizes of the multiple first openings 1412 may be different. Accordingly, a second opening 1512 may be provided on the second connecting portion 151. When the first connecting portion 141 and the second connecting portion 151 are sleeved together, one of the multiple first openings 1412 cooperates with the second opening 1512 to form the guide port 132.

[0086] When the size of the guide port 132 needs to be changed, the relative position of the first connection portion 141 and the second connection portion 151 can be changed to adjust the first opening 1412 on the first connection portion 141 that matches the second opening 1512. Since the multiple first openings 1412 on the first connection portion 141 have different sizes, when the first opening 1412 that matches the second opening 1512 is changed, the size of the resulting guide port 132 also changes accordingly.

[0087] It should be noted that the number of the first opening 1412 can be set to one, and the number of the second openings 1512 can be set to multiple, and the sizes of the multiple second openings 1512 are different. The working principle is the same or similar to that of the above embodiment, and the embodiment of this application will not be repeated here.

[0088] Optionally, the first opening 1412 and the second opening 1512 are arranged along the circumference of the connecting member 130 , and the first opening 1412 at least partially overlaps with the second opening 1512 to form the guide port 132 .

[0089] In an embodiment of the present application, by arranging the first opening 1412 on the first connecting portion 141 and the second opening 1512 on the second connecting portion 151 to be distributed circumferentially along the connecting member 130, and then by rotating and adjusting the relative positions of the first connecting portion 141 and the second connecting portion 151, the matching structure of the first opening 1412 and the second opening 1512 can be changed, thereby changing the size of the actually formed guide port 132.

[0090] In a specific application, the first connector 140 and the second connector 150 can be installed on both sides of the current collector 120, and the first connecting portion 141 and the second connecting portion 151 can be sleeved. By rotating the first connector 140 and the second connector 150, the matching structure of the first opening 1412 and the second opening 1512 can be adjusted, thereby adjusting the size of the guide port 132 actually formed by the first opening 1412 and the second opening 1512. After the adjustment is completed, the first connector 140 and the second connector 150 are further welded to the current collector 120 to obtain the assembled connector 130 and the current collector 120.

[0091] Optionally, the first opening 1412 and the second opening 1512 are arranged along the length direction of the connecting member 130 , and the first opening 1412 at least partially overlaps with the second opening 1512 to form the guide port 132 .

[0092] In an embodiment of the present application, by arranging the first opening 1412 on the first connecting part 141 and the second opening 1512 on the second connecting part 151 along the length direction of the connecting member 130, and then, along the length direction, by adjusting the relative position of the first connecting part 141 and the second connecting part 151, the size of the guide port 132 actually formed by the first opening 1412 and the second opening 1512 can be changed, thereby realizing the adjustment of the heat exchange capacity of the heat exchange assembly 100.

[0093] In a specific application, the first connector 140 and the second connector 150 can be installed on both sides of the current collector 120, and the first connecting portion 141 and the second connecting portion 151 can be sleeved. By adjusting the position of the first connector 140 and the second connector 150 along the length of the connector 130, the size of the overlapping portion of the first opening 1412 and the second opening 1512 can be changed, thereby adjusting the size of the guide port 132. After the adjustment is completed, the first connector 140 and the second connector 150 are welded and fixed to the current collector 120 respectively to obtain the assembled connector 130 and current collector 120.

[0094] Optionally, a first clamping portion 161 is provided on the current collector 120 , and a second clamping portion 162 is provided on the connector 130 , and the first clamping portion 161 is clamped with the second clamping portion 162 .

[0095] In the embodiment of the present application, by clamping the first clamping portion 161 of the current collector 120 with the second clamping portion 162 of the connector 130 , the current collector 120 and the connector 130 can be connected and fixed, thereby increasing the connection stability between the connector 130 and the current collector 120 .

[0096] It is understandable that, in the actual assembly and use process, in order to increase the connection firmness between the connector 130 and the current collector 120 , after adjusting the relative positions of the connector 130 and the current collector 120 , the connector 130 and the current collector 120 need to be welded and fixed.

[0097] In the embodiment of the present application, by providing a first clamping portion 161 on the current collector 120 and a second clamping portion 162 on the connector 130, the clamping action of the first clamping portion 161 and the second clamping portion 162 can be used to pre-fix the connector 130 and the current collector 120. Furthermore, when the connector 130 and the current collector 120 are further welded, positional offset between the connector 130 and the current collector 120 can be avoided, thereby helping to improve welding accuracy and connection stability.

[0098] In some embodiments, the first snap-fit ​​portion 161 can be set as one of a snap and a slot, and the second snap-fit ​​portion 162 can be set as the other of a snap and a slot. The position limiting fixation between the connector 130 and the current collector 120 is achieved through the snap-fit ​​cooperation between the snap and the slot.

[0099] Of course, the first clamping portion 161 and the second clamping portion 162 may also adopt other clamping matching structures, and those skilled in the art may configure them according to actual needs, and the embodiment of the present application does not limit this.

[0100] Optionally, an embodiment of the present application also provides a battery pack, comprising: a battery cell 200, a conduit 300 and at least two heat exchange assemblies 100 in the above embodiments, the connectors 130 of two adjacent heat exchange assemblies 100 are connected through the conduit 300, and the battery cell 200 is arranged between the heat exchange plates 110 of the two adjacent heat exchange assemblies 100.

[0101] In the embodiment of the present application, a heat exchange plate 110, a current collector 120, and a connector 130 are provided in the heat exchange assembly 100. Through the connector 130 and the current collector 120, a heat exchange medium can be introduced into the heat exchange plate 110 or discharged from the heat exchange plate 110, thereby achieving heat dissipation of the heat exchange plate 110 through the flow of the heat exchange medium within the heat exchange plate 110. At the same time, a flow guide 132 is provided on the connector 130. By changing the size of the flow guide 132 on the connector 130, the flow rate of the heat exchange medium in the heat exchange assembly 100 can be changed. In this way, the size of the flow guide 132 in the connector 130 can be flexibly set according to the actual temperature at different locations in the battery pack to adjust the heat dissipation capacity of the heat exchange assembly 100, thereby meeting the differentiated heat dissipation requirements of the battery cells 200 at different locations in the battery pack.

[0102] Specifically, a plurality of heat exchange assemblies 100 may be provided in the battery pack, each heat exchange assembly 100 including a heat exchange plate 110, a current collector 120 and a connector 130. The heat exchange plate 110 is provided with a first cavity 111 for circulating a heat exchange medium; the current collector 120 is connected to the heat exchange plate 110, and the current collector 120 is provided with a second cavity 121 communicating with the first cavity 111; the connector 130 is passed through the current collector 120, and a guide port 132 is provided on the connector 130; a guide channel 131 is provided in the connector 130, and the guide channel 131 is communicated with the second cavity 121 through the guide port 132.

[0103] Furthermore, by placing the battery cell 200 between the heat exchange plates 110 of two heat exchange assemblies 100, heat can be dissipated from both sides of the battery cell 200 simultaneously through the heat exchange plates 110, thereby improving the heat dissipation effect on the battery cell 200. The connectors 130 of two adjacent heat exchange assemblies 100 are connected by a conduit 300 to allow the heat exchange medium to flow through different heat exchange assemblies 100.

[0104] The conduit 300 is connected to the portion of the connector 130 exposed outside the current collector 120 , and the heat exchange medium can be introduced into the heat exchange assembly 100 or discharged from the heat exchange assembly 100 through the conduit 300 .

[0105] It should be noted that the battery pack of the embodiment of the present application may include the heat exchange component 100 in any of the above embodiments. The specific structure of the heat exchange component 100 can be found in the above content, and the embodiment of the present application will not be repeated here.

[0106] Optionally, the cross-sectional area of ​​the connection between the guide port 132 and the guide channel 131 or the second cavity 121 is S2 mm 2 , along the liquid inlet direction of the catheter 300, S2 at the front end is smaller than S2 at the rear end.

[0107] Specifically, the heat exchange medium is introduced into the heat exchange assembly 100 via the conduit 300, or the heat exchange medium in the heat exchange assembly 100 is discharged via the conduit 300. Along the liquid inlet direction of the conduit 300, the flow guide 132 may include a first end and a second end that are oppositely disposed, wherein the first end is located at the front end of the second end, that is, the heat exchange medium flows from the first end to the second end.

[0108] Furthermore, the cross-sectional area S2 of the first end of the guide opening 132 is smaller than the cross-sectional area S2 of the second end. That is, the guide opening 132 tends to increase in the direction of flow of the heat exchange medium. In this way, the sidewalls of the guide opening 132 can guide the heat exchange medium, reduce the flow resistance of the guide opening 132 to the heat exchange medium, and improve the flow smoothness of the heat exchange medium at the guide opening 132.

[0109] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0110] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat exchange assembly (100), wherein: include: A heat exchange plate (110), wherein a first cavity (111) for circulating a heat exchange medium is provided in the heat exchange plate (110); a current collector (120), the current collector (120) being connected to the heat exchange plate (110), and a second cavity (121) communicating with the first cavity (111) being provided in the current collector (120); A connecting member (130), the connecting member (130) is provided on the current collector (120), and a flow guide port (132) is provided on the connecting member (130); a flow guide channel (131) is provided in the connecting member (130), and the flow guide channel (131) is connected to the second cavity (121) through at least a portion of the flow guide port (132); the maximum cross-sectional area of ​​the flow guide port (132) is S1mm 2 The cross-sectional area of ​​the connection between the guide port (132) and the guide channel (131) or the second cavity (121) is S2 mm. 2 , satisfying: S1>S2.

2. The heat exchange assembly (100) according to claim 1, wherein: The connecting member (130) includes: a first connecting head (140) and a second connecting head (150); The first connector (140) and the second connector (150) are connected to each other, a first channel (1411) is provided in the first connector (140), and a second channel (1511) is provided in the second connector (150), the first channel (1411) and the second channel (1511) are connected to each other to form the guide channel (131), and the guide port (132) is formed on the first connector (140) and the second connector (150).

3. The heat exchange assembly (100) according to claim 1, wherein: The connecting member (130) includes: a first connecting head (140) and a second connecting head (150); The first connector (140) and the second connector (150) are connected to each other, a first channel (1411) is provided in the first connector (140), and a second channel (1511) is provided in the second connector (150), the first channel (1411) and the second channel (1511) are connected to each other to form the guide channel (131), and the guide port (132) is formed on the first connector (140).

4. The heat exchange assembly (100) according to claim 1, wherein: The connecting member (130) includes: a first connecting head (140) and a second connecting head (150); The first connector (140) and the second connector (150) are connected to each other. A first channel (1411) is provided in the first connector (140), a second channel (1511) is provided in the second connector (150), the first channel (1411) and the second channel (1511) are interconnected to form the diversion channel (131), and the diversion port (132) is formed on the second connector (150).

5. The heat exchange assembly (100) according to any one of claims 2 to 4, wherein: The first connecting head (140) is provided with a first connecting portion (141), and the second connecting head (150) is provided with a second connecting portion (151), and the first connecting portion (141) and the second connecting portion (151) are sleeved together; a side wall of the first connecting portion (141) is provided with a first opening (1412) communicating with the first channel (1411), and a side wall of the second connecting portion (151) is provided with a second opening (1512) communicating with the second channel (1511), and the first opening (1412) and the second opening (1512) are adapted to form the guide port (132).

6. The heat exchange assembly (100) according to claim 5, wherein: At least two first openings (1412) are provided on the first connecting portion (141) at intervals along the circumferential direction, and at least one second opening (1512) is provided on the second connecting portion (151) at intervals along the circumferential direction, and at least part of the first openings (1412) and the second openings (1512) are adapted to form the guide port (132).

7. The heat exchange assembly (100) according to claim 5, wherein: The first opening (1412) and the second opening (1512) are arranged along the circumference of the connecting member (130), and the first opening (1412) at least partially overlaps with the second opening (1512) to form the guide port (132).

8. The heat exchange assembly (100) according to claim 5, wherein: The first opening (1412) and the second opening (1512) are arranged along the length direction of the connecting member (130), and the first opening (1412) at least partially overlaps with the second opening (1512) to form the guide port (132).

9. The heat exchange assembly (100) according to claim 5, wherein: At least two of the first openings (1412) are of different sizes.

10. The heat exchange assembly (100) according to claim 1, wherein: The current collector (120) is provided with a first clamping portion (161), and the connecting member (130) is provided with a second clamping portion (162), wherein the first clamping portion (161) is clamped with the second clamping portion (162).

11. The heat exchange assembly (100) according to claim 10, wherein: The first clamping portion (161) is one of a buckle and a slot, and the second clamping portion (162) is the other of the buckle and the slot, and the buckle is clamped with the slot.

12. The heat exchange assembly (100) according to claim 1, wherein: The connecting piece (130) is fixed to the current collector (120) by welding.

13. The heat exchange assembly (100) according to claim 1, wherein: The connecting piece (130) is an integrated structure.

14. The heat exchange assembly (100) according to claim 13, wherein: A plurality of the connecting members (130) are provided, and the guide ports (132) of the plurality of connecting members (130) have different sizes.

15. The heat exchange assembly (100) according to claim 1, wherein: A plurality of the current collectors (120) and the connectors (130) are provided, and the plurality of current collectors (120) are respectively connected to the heat exchange plates (110), and the plurality of connectors (130) are respectively connected to the plurality of current collectors (120).

16. The heat exchange assembly (100) according to claim 15, wherein: The plurality of current collectors (120) are respectively arranged at both ends of the heat exchange plate (110) along the length direction thereof.

17. A battery pack, wherein: include: A battery cell (200), a conduit (300), and at least two heat exchange components (100) according to any one of claims 1 to 16, The connectors (130) of two adjacent heat exchange assemblies (100) are connected via the conduit (300), and the battery cell (200) is arranged between the heat exchange plates (110) of the two adjacent heat exchange assemblies (100).

18. The battery pack according to claim 17, wherein: The connecting cross-sectional area between the guide port (132) and the guide channel (131) or the second cavity (121) is S2 mm. 2 , along the liquid inlet direction of the conduit (300), the S2 located at the front end is smaller than the S2 located at the rear end.

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