Current collector, cooling assembly, battery, and electrical device

Abstract

Embodiments of the present disclosure provide a current collector, a cooling assembly, a battery, and an electrical device. The current collector is used to connect to a harmonica-shaped tube, and comprises a cover body, supporting ribs, and a supporting elastic piece. The cover body is provided with a first flow channel having a first opening. Multiple supporting ribs are connected to the cover body at intervals, and are located in the first flow channel. A snap-fit groove is formed between the supporting ribs and the cover body, the snap-fit groove being used for containing the harmonica-shaped tube. The supporting elastic piece is connected to the supporting ribs, and at least a portion of the supporting elastic piece extends between two adjacent supporting ribs, the supporting elastic piece being used to support the harmonica-shaped tube.

Description

Current collectors, cooling components, batteries, and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202420514401.8, application date March 18, 2024, and invention name “Current Collector, Cooling Assembly, Battery and Electrical Equipment”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the technical field of battery manufacturing, and in particular to a current collector, a cooling assembly, a battery, and an electrical device. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] In related technologies, a cooling assembly is installed within the battery to maintain its normal operating temperature range for thermal management. The cooling assembly includes a current collector and a harmonica tube. The harmonica tube is prone to local deformation and collapse during welding, resulting in poor fit between the outer wall of the harmonica tube and the inner wall of the current collector, weld failure, and cooling assembly leakage.

[0006] Utility Model Content

[0007] In view of this, the embodiments of the present disclosure are intended to provide a current collector, a cooling assembly, a battery, and an electrical device to reduce the possibility of leakage of the cooling assembly.

[0008] To achieve the above objectives, a first aspect of the disclosed embodiments provides a current collector for connecting to a harmonica tube, comprising a cover, support ribs, and a support spring. The cover defines a first flow channel with a first opening; a plurality of support ribs are spaced apart and connected to the cover, located within the first flow channel; a snap-fit ​​groove is formed between the support ribs and the cover, and is configured to accommodate the harmonica tube; the support spring is connected to the support ribs, with at least a portion of the support spring extending between two adjacent support ribs, and is configured to support the harmonica tube.

[0009] The support ribs and support shrapnel provide elastic support to the harmonica tube so that the harmonica tube and the current collector fit together, thereby reducing the possibility of leakage of the cooling assembly.

[0010] In some embodiments, the supporting spring includes a first spring, which includes a first extension, a first curved portion, and a first abutting portion. The first extension is connected to the supporting rib; the first curved portion is connected to the first extension and curved toward the inner wall of the cover; and the first abutting portion is connected to the first curved portion and protrudes from or is flush with the supporting rib.

[0011] In this way, the first abutting portion can apply a force to the tube body in a direction opposite to the deformation direction of the tube body, so as to reduce the possibility of deformation of the harmonica tube.

[0012] In some embodiments, the supporting spring includes a second spring, which includes a second extension, a second curved portion, and a second abutting portion. The second extension is connected to the supporting rib; the second curved portion is connected to the second extension and bends away from the inner wall of the cover; and the second abutting portion is connected to the second curved portion and extends away from the inner wall of the cover.

[0013] The second protruding portion, the second curved portion and the second abutting portion can apply a force opposite to the deformation direction of the harmonica tube to the harmonica tube, thereby supporting the tube body and the oblique ribs to reduce the possibility of deformation of the harmonica tube.

[0014] In some embodiments, the current collector further includes a compensation protrusion, which is connected to the cover and located in the first flow channel.

[0015] In this way, the position of the local poor adhesion between the harmonica tube and the current collector can be adjusted.

[0016] In some embodiments, the compensation protrusion is located between two adjacent support ribs.

[0017] The compensation protrusion is arranged between two adjacent supporting ribs, which can increase the compensation effect on the harmonica pipe.

[0018] In some embodiments, the cover body, the supporting ribs and the supporting springs are integrally injection molded.

[0019] In this way, the current collector structure can be effectively simplified, thereby effectively simplifying the manufacturing process of the current collector.

[0020] A second aspect of the disclosed embodiments provides a cooling assembly comprising a harmonica tube and any of the aforementioned current collectors. The harmonica tube comprises a tube body and diagonal ribs. The tube body defines a second flow channel, and a plurality of diagonal ribs are spaced apart within the second flow channel. The end of the harmonica tube is positioned within a snap-fit ​​groove and welded to the cover body. A supporting spring is positioned within the second flow channel and is at least partially melted and connected to the harmonica tube.

[0021] In this way, the possibility of deformation of the harmonica tube can be reduced, the adverse effects caused by leakage of the cooling assembly can be reduced, and the thermal management effect of the cooling assembly can be improved.

[0022] In some embodiments, at least a portion of the supporting spring is melted and connected to the intersection of the tube body and the oblique rib.

[0023] In this way, the supporting effect can be improved and the possibility of coolant leakage can be reduced.

[0024] In some embodiments, the harmonica tube is extruded.

[0025] In this way, production efficiency can be improved and the length of the tube body can be set according to demand.

[0026] A third aspect of an embodiment of the present disclosure provides a battery, comprising a battery cell or a battery module and a cooling assembly of any of the above items, wherein the cooling assembly is thermally coupled to the battery cell or the battery module to dissipate heat from the battery cell or the battery module.

[0027] The battery provided by the embodiments of the present disclosure can perform effective thermal management to maintain it within a normal operating temperature range.

[0028] A fourth aspect of an embodiment of the present disclosure provides an electrical device comprising the above-mentioned battery for providing electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic structural diagram of a cooling assembly according to one or more embodiments;

[0030] FIG2 is a schematic diagram of the AA cross-sectional structure of FIG1 ;

[0031] FIG3 is an enlarged structural diagram of point D in FIG2 .

[0032] FIG4 is a schematic structural diagram of a current collector according to one or more embodiments;

[0033] FIG5 is an enlarged structural diagram of point E in FIG4 ;

[0034] FIG6 is a front view of FIG4;

[0035] FIG7 is a schematic diagram of the BB cross-sectional structure of FIG6 ;

[0036] FIG8 is an enlarged structural diagram of point F in FIG7 ;

[0037] FIG9 is a schematic diagram of the CC cross-sectional structure of FIG6 .

[0038] Description of Reference Numerals

[0039] Current collector 100; snap-fit ​​groove 100a;

[0040] Cover body 10; first flow channel 10a; first opening 10a1;

[0041] Support ribs 20;

[0042] Supporting spring piece 30; first spring piece 31; first extending portion 311; first bent portion 312; first abutting portion 313; second spring piece 32; second extending portion 321; second bent portion 322; second abutting portion 323;

[0043] Compensating protrusion 40;

[0044] Connector 50;

[0045] Cooling assembly 1000; harmonica tube 200; tube body 210; oblique rib 220. DETAILED DESCRIPTION

[0046] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present disclosure pertains. The terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The terms "including" and "having" and any variations thereof in the present disclosure are intended to cover non-exclusive inclusions.

[0048] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0049] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installation" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0051] In the related art, in order to ensure the stable performance of battery-using electrical equipment such as new energy vehicles, it is necessary to perform thermal management on the battery so that the battery operates within an appropriate temperature range. The battery can be a battery pack, which includes a housing and one or more battery cell assemblies, and the battery cell assembly is housed in the housing. The battery may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, which are formed by arranging a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel, or in mixed series through a busbar. A cooling assembly is provided in the battery, and the cooling assembly can accommodate a coolant to regulate the battery temperature. The cooling assembly exchanges heat with the battery cell, and can effectively manage the thermal state of the battery.

[0052] The cooling assembly includes a current collector and a heat exchange tube. The harmonica tube is a type of heat exchange tube. The harmonica tube has multiple heat exchange channels, and the current collector is mounted at the end of the harmonica tube, enclosing these channels. When cooling the battery, the cooling assembly holds coolant to regulate the battery temperature. The coolant flows through the current collector into the harmonica tube's heat exchange channels, exchanging heat with the battery and reducing the risk of thermal runaway.

[0053] When the current collector and the harmonica tube are welded, the harmonica tube is easily deformed, resulting in welding failure of the current collector and the harmonica tube, and the coolant is easily leaked.

[0054] Based on the above, an embodiment of the present disclosure provides a cooling assembly 1000. Referring to Figures 1-3 , the cooling assembly 1000 includes a harmonica tube 200 and a current collector 100. The harmonica tube 200 includes a tube body 210 and oblique ribs 220. The tube body 210 defines a second flow channel. Multiple oblique ribs 220 are spaced apart within the second flow channel, forming a plurality of heat exchange channels extending longitudinally along the harmonica tube 200. Each end of the harmonica tube 200 can be connected to a current collector 100.

[0055] The disclosed embodiment also provides a current collector 100 for connecting to a harmonica pipe 200. Referring to Figures 4 to 9 , the current collector 100 comprises a cover 10, support ribs 20, and support springs 30. The cover 10 forms a first flow channel 10a with a first opening 10a1. A plurality of support ribs 20 are connected to the cover 10 at intervals and positioned within the first flow channel 10a. A snap-fit ​​groove 100a is formed between the support ribs 20 and the cover 10, and is used to accommodate the harmonica pipe 200. The support springs 30 are connected to the support ribs 20, with at least a portion of the support springs 30 extending between two adjacent support ribs 20. The cover 10 has a first flow channel 10a, which connects to the harmonica pipe 200 through the first opening 10a1. Specifically, after one end of the harmonica pipe 200 is inserted into the first opening 10a1 of the cover 10, it is positioned within the snap-fit ​​groove 10a. The shape of the first opening 10a1 can be adapted to the outer contour of the end of the harmonica pipe 200. For example, when the harmonica pipe 200 is a flat tube, the shape of the first opening 10a1 may be an open ellipse.

[0056] The support ribs 20 are located within the first flow channel 10a. Multiple support ribs 20 are spaced apart to avoid the oblique ribs 220 of the harmonica tube 200, allowing the tube 200 to be inserted into the current collector 100 while also strengthening the structural strength of the cover 10. A snap-fit ​​groove 100a is formed between the support ribs 20 and the cover 10. The end of the harmonica tube 200 is positioned within the snap-fit ​​groove 100a and welded to the cover 10. For example, the support ribs 20 are spaced apart along the inner wall contour of the cover 10, so that the snap-fit ​​groove 100a formed between the support ribs 20 and the cover 10 is annular. If the harmonica tube 200 is a flat tube, the snap-fit ​​groove 100a can be elliptical. The support ribs 20 abut the body 210 of the harmonica tube 200, minimizing deformation of the tube 200. After welding the harmonica tube 200 to the current collector 100, portions of the support ribs 20 can be melted and connected to the body 210.

[0057] The supporting spring 30 is positioned within the second flow channel, abutting the body 210 and / or the diagonal ribs 220 of the harmonica tube 200 and, after being at least partially melted, connecting to the harmonica tube 200, for example, to the body 210 and / or the diagonal ribs 220. The supporting spring 30 is used to support the harmonica tube 200, further reducing the adverse effects of deformation of the harmonica tube 200 during welding, extrusion, and other processes, thereby improving the fit between the harmonica tube 200 and the current collector 100. For example, the harmonica tube 200 may deform during extrusion, or when the harmonica tube 200 and the current collector 100 are welded, the harmonica tube 200 may deform and collapse due to the increased welding temperature. The supporting spring 30 can exert a force on the harmonica tube 200 in the opposite direction of the deformation, thereby supporting the harmonica tube 200 and reducing the possibility of deformation.

[0058] It should be noted that the drawings in this specification schematically depict two support springs 30 on one support rib 20; all other support ribs 20 may be connected to support springs 30. The support springs 30 are connected to the support rib 20 to form a cantilever structure, and the free ends of the support springs 30 may be warped, for example, into a "U" shape, a "C" shape, an "L" shape, or a "J" shape, to apply force to the harmonica tube 200.

[0059] The support ribs 20 and the support springs 30 can reduce the impact of local deformation of the harmonica tube 200 during welding, provide elastic support to the harmonica tube 200, and make the harmonica tube 200 fit closely with the current collector 100, thereby reducing the possibility of leakage of the cooling assembly 1000.

[0060] In some embodiments, referring to Figures 3 and 5 , the support spring 30 includes a first spring 31, which includes a first protruding portion 311, a first curved portion 312, and a first abutting portion 313. The first protruding portion 311 is connected to the support rib 20; the first curved portion 312 is connected to the first protruding portion 311 and bends toward the inner wall of the cover 10; and the first abutting portion 313 is connected to the first curved portion 312 and protrudes from or is flush with the support rib 20.

[0061] In this way, the first elastic piece 31 can be fixed to the supporting rib 20 through the first protruding portion 311, and the first abutting portion 313 is warped toward the tube body 210. When the harmonica tube 200 is heated and has a tendency to deform, pressure is applied to the first abutting portion 313 toward the second flow channel. The first abutting portion 313 can apply a force to the tube body 210 in the opposite direction to the deformation direction of the tube body 210, so as to reduce the possibility of deformation of the harmonica tube 200.

[0062] For example, the first curved portion 312 may abut against the oblique rib 220 to support the oblique rib 220 , thereby reducing the possibility of deformation of the harmonica tube 200 .

[0063] In some embodiments, referring to Figures 3 and 5 , the supporting spring 30 includes a second spring 32, which includes a second extending portion 321, a second curved portion 322, and a second abutting portion 323. The second extending portion 321 is connected to the supporting rib 20; the second curved portion 322 is connected to the second extending portion 321 and bends away from the inner wall of the cover 10; and the second abutting portion 323 is connected to the second curved portion 322 and extends away from the inner wall of the cover 10.

[0064] The second spring piece 32 can be fixed to the supporting rib 20 through the second protruding portion 321, and the second abutting portion 323 extends or warps in the direction of the oblique rib 220. When the harmonica tube 200 has a tendency to deform due to heat, the deformation tendency of the harmonica tube 200 exerts pressure on the second spring piece 32. For example, the tube body 210 exerts pressure toward the second flow channel on the second protruding portion 321, and the oblique rib 220 exerts pressure toward the second flow channel on the second abutting portion 323. The second protruding portion 321, the second curved portion 322 and the second abutting portion 323 can apply a force to the harmonica tube 200 that is opposite to the deformation direction of the harmonica tube 200, support the tube body 210 and the oblique rib 220, so as to reduce the possibility of deformation of the harmonica tube 200 and improve the supporting ability of the oblique rib 220 on the tube body 210.

[0065] It is understandable that the current collector provided in the embodiment of the present disclosure may be provided with either the first elastic piece 31 or the second elastic piece 32 , or may be provided with both the first elastic piece 31 and the second elastic piece 32 .

[0066] Meanwhile, the positions and numbers of the first elastic piece 31 and the second elastic piece 32 are not limited and can be selectively arranged according to the specific conditions of the harmonica tube 200 , for example, the number of the first elastic piece 31 and the second elastic piece 32 can be increased at positions prone to deformation.

[0067] In some embodiments, referring to FIG. 4-FIG . 5 , the current collector 100 further includes a compensation protrusion 40 . The compensation protrusion 40 is connected to the cover 10 and is located in the first flow channel 10 a .

[0068] The compensating protrusion 40 is used to adjust the location of the poor fit between the harmonica tube 200 and the current collector 100, thereby compensating for deformation of the harmonica tube 200. For example, if the current collector 100 and the harmonica tube 200 are welded together, and the welding temperature rises, the harmonica tube 200 may partially collapse. The compensating protrusion 40 melts upon heating and then welds to the harmonica tube 200, compensating for the deformation.

[0069] It should be noted that the compensation protrusion 40 is only schematically shown in one location in the drawings. The harmonica tube 200 is more susceptible to deformation near the middle, and the number and size of the compensation protrusions 40 near the middle of the harmonica tube 200 can be increased according to actual conditions.

[0070] In some embodiments, referring to FIG. 4-FIG . 5 , the compensation protrusion 40 is located between two adjacent support ribs 20 .

[0071] The supporting effect of the harmonica tube 200 between two adjacent supporting ribs 20 is weaker than that at other positions. The compensating protrusion 40 is disposed between two adjacent supporting ribs 20 to increase the compensating effect on the harmonica tube 200 .

[0072] In some embodiments, the cover 10 , the support ribs 20 and the support springs 30 are integrally injection molded.

[0073] The cover 10 , the support ribs 20 and the support springs 30 are integrally injection-molded, which can effectively simplify the structure of the current collector 100 , thereby effectively simplifying the manufacturing process of the current collector 100 and improving the stability of the overall structure of the current collector 100 .

[0074] In some embodiments, referring to Figure 4, the current collector 100 further includes a connector 50 connected to the cover 10 and communicating with the first flow channel 10a. The connector 50 is used to introduce the coolant into the first flow channel 10a or to remove the coolant from the first flow channel 10a.

[0075] In some embodiments, referring to Figures 1-3 , a cooling assembly 1000 includes a harmonica tube 200 and any of the aforementioned current collectors 100. The harmonica tube 200 includes a tube body 210 and oblique ribs 220. The tube body 210 defines a second flow channel, with multiple oblique ribs 220 spaced apart within the second flow channel. The end of the harmonica tube 200 is positioned within the engaging groove 100a and welded to the cover 10. The supporting spring 30 is positioned within the second flow channel and is at least partially melted to connect to the harmonica tube 200.

[0076] Exemplarily, the material of the supporting spring piece 30 is consistent with that of the cover body 10 , for example, the supporting spring piece 30 and the cover body 10 are both made of plastic.

[0077] The harmonica tube 200 includes a tube body 210 and oblique ribs 220 . There are multiple oblique ribs 220 . The multiple oblique ribs 220 can separate the second flow channel in the tube body 210 into multiple heat exchange channels extending longitudinally along the harmonica tube 200 .

[0078] The shape of the oblique ribs 220 is not limited. For example, the oblique ribs 220 may be in a plate shape, a mesh shape, or other shapes.

[0079] It is understood that the outer wall of the harmonica tube 200 is adapted to the inner wall of the current collector 100, that is, the cross-section of the first opening 10a1 is adapted to the outer contour of the harmonica tube 200. This facilitates the first opening to provide stable support and position retention for the harmonica tube 200 when it is inserted into the current collector 100, and also reduces the possibility of coolant leakage.

[0080] Illustratively, the supporting elastic piece 30 is interference-fitted with the harmonica tube 200 to improve the stability of the supporting elastic piece 30 .

[0081] In some embodiments, as shown in Figures 2-3 , the support spring 30 is connected to the intersection of the tube 210 and the oblique rib 220. This intersection is more susceptible to deformation than other locations. Placing the support spring 30 there enhances support and reduces the possibility of coolant leakage.

[0082] In some embodiments, the harmonica tube 200 is made of plastic and is extruded to improve production efficiency and to adjust the length of the tube 210 according to needs.

[0083] In some embodiments, the cooling assembly 1000 includes a current collector 100 and a harmonica tube 200. The current collector 100 includes a cover 10, support ribs 20, and support springs 30. The cover 10 defines a first flow channel 10a with a first opening 10a1. Multiple support ribs 20 are spaced apart and connected to the cover 10, located within the first flow channel 10a. A snap-fit ​​groove 100a is formed between the support ribs 20 and the cover 10. The support springs 30 are connected to the support ribs 20, with at least a portion of the support springs 30 extending between adjacent support ribs 20. The harmonica tube 200 includes a tube body 210 and oblique ribs 220. The tube body 210 defines a second flow channel, with multiple oblique ribs 220 spaced apart within the second flow channel to form multiple heat exchange channels. The end of the harmonica tube 200 is located within the snap-fit ​​groove 100a and welded to the cover 10. The support springs 30 are located within the second flow channel and are at least partially melted and connected to the harmonica tube 200. The supporting spring 30 is connected at the intersection of the tube body 210 and the oblique rib 220. The cover body 10, the supporting rib 20 and the supporting spring 30 are integrally injection-molded, and the harmonica tube 200 is plastic extrusion-molded. The supporting spring 30 includes a first spring 31 and a second spring 32. The first spring 31 includes a first protruding portion 311, a first curved portion 312 and a first abutting portion 313. The first protruding portion 311 is connected to the supporting rib 20; the first curved portion 312 is connected to the first protruding portion 311 and is bent toward the inner wall of the cover body 10; the first abutting portion 313 is connected to the first curved portion 312, protruding from the supporting rib 20 or arranged flush with the supporting rib 20. The second spring 32 includes a second protruding portion 321, a second curved portion 322 and a second abutting portion 323. The second extension portion 321 is connected to the support rib 20; the second curved portion 322 is connected to the second extension portion 321 and bends in a direction away from the inner wall of the cover body 10; the second abutment portion 323 is connected to the second curved portion 322 and extends in a direction away from the inner wall of the cover body 10. The current collector 100 also includes a compensation protrusion 40, which is connected to the cover body 10 and is located in the first flow channel 10a. The compensation protrusion 40 is located between two adjacent support ribs 20. The current collector 100 also includes a connector 50, which is connected to the cover body 10 and communicates with the first flow channel 10a. The connector 50 is used to introduce coolant into the first flow channel 10a, or to drain coolant from the first flow channel 10a.

[0084] An embodiment of the present disclosure further provides a battery, comprising a battery cell or a battery module and a cooling assembly 1000 of any of the above items, wherein the cooling assembly 1000 is thermally coupled to the battery cell or the battery module to dissipate heat from the battery cell or the battery module.

[0085] The battery provided by the embodiments of the present disclosure can perform effective thermal management to maintain it within a normal operating temperature range.

[0086] An embodiment of the present disclosure further provides an electrical device comprising the above-mentioned battery for providing electrical energy.

[0087] Electrical devices may include, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. Electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0088] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure, and they should all be included in the scope of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present disclosure is not limited to the specific embodiments disclosed herein.

Claims

1. A current collector for connecting to a harmonica tube, comprising: The cover body is formed with a first flow channel having a first opening; A plurality of support ribs are connected to the cover at intervals and are located in the first flow channel, wherein a clamping groove is formed between the support ribs and the cover, and the clamping groove is used to accommodate the harmonica pipe; as well as A supporting spring is connected to the supporting ribs, at least a portion of the supporting spring extends between two adjacent supporting ribs, and the supporting spring is used to support the harmonica tube.

2. The current collector according to claim 1, wherein The supporting spring piece includes a first spring piece, and the first spring piece includes: a first extension portion connected to the support rib; a first curved portion connected to the first protruding portion and curved toward the inner wall of the cover; and The first abutting portion is connected to the first bent portion and protrudes from the supporting rib or is arranged flush with the supporting rib.

3. The current collector according to claim 1 or 2, wherein: The supporting spring piece includes a second spring piece, and the second spring piece includes: a second extension portion connected to the support rib; a second curved portion connected to the second protruding portion and curved toward a direction away from the inner wall of the cover; and The second abutting portion is connected to the second bent portion and extends in a direction away from the inner wall of the cover body.

4. The current collector according to any one of claims 1 to 3, wherein: The current collector further comprises: The compensation protrusion is connected to the cover body and is located in the first flow channel.

5. The current collector according to claim 4, wherein The compensation protrusion is located between two adjacent supporting ribs.

6. The current collector according to any one of claims 1 to 5, wherein: The cover body, the supporting ribs and the supporting elastic pieces are integrally injection-molded.

7. A cooling assembly comprising: The current collector according to any one of claims 1 to 6; as well as A harmonica tube comprises a tube body and oblique ribs, wherein the tube body is formed with a second flow channel, and a plurality of oblique ribs are arranged in the second flow channel at intervals; The end of the harmonica tube is located in the clamping groove and welded to the cover body, and the supporting elastic sheet is located in the second flow channel and connected to the harmonica tube after being at least partially melted.

8. The cooling assembly according to claim 7, wherein: After at least a portion of the supporting spring is melted, it is connected to the intersection of the tube body and the oblique rib.

9. The cooling assembly according to claim 7 or 8, wherein: The harmonica tube is formed by extrusion.

10. A battery comprising: Battery cells or battery modules; as well as The cooling assembly according to any one of claims 7 to 9 is thermally coupled to the battery cell or the battery module to dissipate heat from the battery cell or the battery module.

11. An electrical device comprising the battery according to claim 10, for providing electrical energy.

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