Current collector, method of manufacturing the same, thermal management assembly, battery, and electric device

Abstract

The application discloses a current collector and a manufacturing method thereof, a thermal management assembly, a battery and a power utilization device. The current collector comprises a current collector body, and the current collector body comprises an outer plate and an inner partition plate. The inner partition plate is arranged inside the outer plate, and the inner partition plate divides a space surrounded by the outer plate into a first space and a second space. The first space and the second space are water inlet space and water outlet space respectively. The outer plate and the inner partition plate are integrally formed. The current collector body of the current collector provided by the embodiment of the application is manufactured through an integral forming process, so that the process steps and the number of structural parts of the current collector body are reduced, the processing difficulty and the manufacturing cost are reduced, and therefore the current collector body can be rapidly produced and the production efficiency of the current collector is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a current collector, a manufacturing method thereof, a thermal management assembly, a battery and an electric device. BACKGROUND

[0002] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0003] During the use of the battery in charging and discharging, the internal structure of the battery will fluctuate due to the charging and discharging of the battery itself, thereby affecting the performance of the battery. Therefore, a thermal management assembly is needed to control the temperature. However, the thermal management assembly has a complex structure, and the assembly process of the components requires high precision, which often affects the production efficiency of the thermal management assembly, thereby affecting the production efficiency of the battery and further affecting the production efficiency of the vehicle. SUMMARY

[0004] In view of the above problems, the present application provides a current collector for a thermal management assembly, a manufacturing method thereof, a thermal management assembly, a battery and an electric device. To solve the problems of complex structure, difficult processing and multiple processing of the current collector, the manufacturing steps of the current collector are optimized by an integrated molding process, thereby improving the production efficiency of the current collector and further improving the production efficiency of the thermal management assembly. Specifically, the present application includes the following technical solutions.

[0005] In one aspect, the present application provides a current collector, which includes a current collector body. The current collector body includes an outer plate and an inner partition plate. The inner partition plate is arranged inside the outer plate, and the inner partition plate divides the space surrounded by the outer plate into a first space and a second space. The first space and the second space are water inlet space and water outlet space respectively. Wherein, the outer plate and the inner partition plate are integrally formed.

[0006] Because the outer plate and the inner partition plate use an integrated molding process, the number of process steps and structural components of the current collector is reduced, the processing difficulty and manufacturing cost are reduced, and the production efficiency of the current collector is improved.

[0007] In some embodiments, the inner partition plate is in a material continuous state in the first direction.

[0008] Manufacturing a material continuous component makes the current collector body easier to process, the mold design simpler, and the processing equipment simpler.

[0009] In some embodiments, the inner partition plate has the same shape in any cross section perpendicular to the first direction.

[0010] The once forming can form a plurality of collector body assemblies, and then cutting can form a single collector body, which can conveniently realize batch manufacturing of the collector body.

[0011] In some embodiments, the inner partition plate has a U-shaped cross-sectional shape perpendicular to the first direction; and / or the inner partition plate has a V-shaped cross-sectional shape perpendicular to the first direction.

[0012] The U-shaped structure design corner smooth transition, which is not easy to break and produce burrs when integrally formed, so that the fluid space formed has smaller resistance to fluid flow. The V-shaped structure design exists, which makes the material less, which is beneficial to reduce the cost.

[0013] In some embodiments, the integrally formed manner includes extrusion forming.

[0014] The extrusion forming process makes the collector body production continuous and more efficient, and the equipment used for extrusion forming is simpler than other integrally formed equipment, and the production cost of the process is lower.

[0015] In some embodiments, the collector body further includes a first through hole for introducing fluid into the collector body or flowing fluid out of the collector body. The collector body includes a first cover plate and a second cover plate, which are respectively sealingly connected to both ends of the opening of the outer plate. At least one of the first cover plate and the second cover plate is provided with at least two first through holes.

[0016] The first through holes can be respectively arranged on both sides of the collector body or arranged on one side according to the use demand and space demand of the thermal management assembly.

[0017] In some embodiments, one or more second through holes are arranged on the plate surrounding the first space. One or more third through holes are arranged on the plate surrounding the second space. The second through holes and the third through holes are used for the fluid inlet and outlet of the collector body and the thermal management component. The number of the second through holes is the same as that of the third through holes.

[0018] The water inlet and outlet of the collector body to the thermal management component are one-to-one corresponding, so that the fluid in the thermal management component flows uniformly, and ensures that the heat exchange of the thermal management component to each position of the external battery monomer is balanced.

[0019] In some embodiments, the second through holes and the third through holes are respectively arranged on the outer plate, and the second through holes and the third through holes are located on the plate of the collector body different from the first through hole.

[0020] The first through hole is arranged separately from the second through hole and the third through hole, which helps to improve the overall installation reliability. In addition, the water channel pipeline connected with the first through hole and the thermal management component connected with the second through hole and the third through hole are arranged on different plates of the current collector, so that they are distributed on different sides and do not interfere with each other.

[0021] In some embodiments, a reinforcing rib is arranged on the outer plate towards the first space and / or the second space.

[0022] The reinforcing rib is arranged inside the current collector body, which increases the welding area of the current collector body and the cover plate, thereby strengthening the welding strength of the two and improving the structural strength of the overall current collector.

[0023] In another aspect, the embodiments of the present application provide a manufacturing method of a current collector. The current collector body of the aforementioned current collector is formed by integral molding.

[0024] The current collector body is manufactured by integral molding, which reduces the parts of the current collector, saves production cost, simplifies the manufacturing process steps, reduces production time, and improves production efficiency.

[0025] In some embodiments, the profile is extruded according to the mold, and a profile structure with two cavities is formed along the extrusion direction, the cavities being used to form the first space and the second space.

[0026] The mold and processing equipment used in the extrusion molding process are simple, and a large number of same profile structures can be produced in batches. The current collector body can be obtained by a simple process, thereby improving the production efficiency of the current collector.

[0027] In some embodiments, a profile structure including at least one current collector body is formed along the extrusion direction, and the profile structure is cut to obtain a single current collector body.

[0028] Compared with the original welding of multiple parts to form the current collector body, the current collector body can be obtained by directly cutting the profile structure, which simplifies the process flow, reduces the processing difficulty, and improves the production efficiency.

[0029] In some embodiments, a first cover plate and a second cover plate are provided, which are respectively sealed and connected to the two ends of the current collector body to form a sealing mechanism of a single current collector.

[0030] The cover plates are sealed and connected to the two ends of the current collector body to seal the current collector.

[0031] In some embodiments, the first cover plate and the second cover plate are respectively installed before or after the current collector body, and the first through hole is punched on the first cover plate and / or the second cover plate; and / or, the second through hole and the third through hole are punched on the outer plate simultaneously or separately before or after the profile structure is cut.

[0032] The order of punching is relatively free, so that the production process can be punched first or punched later according to specific needs, which is convenient for production and processing.

[0033] In some embodiments, before the first cover plate and the second cover plate are respectively installed on the current collector body, the reinforcing ribs are welded on the outer plate of the current collector body, and the reinforcing ribs are directed towards the first space and / or the second space.

[0034] When the cover plate is welded on the current collector body with reinforcing ribs, the welding area is larger, thereby improving the welding strength and the overall strength of the current collector.

[0035] In another aspect, the application provides a thermal management assembly, comprising the aforementioned current collector and a thermal management component. The water inlet of the thermal management component is in communication with the first space, and the water outlet of the thermal management component is in communication with the second space.

[0036] By setting the water inlet and the water outlet on the thermal management component in communication with the current collector, a fluid flow channel in the thermal management assembly is constructed for heat exchange, so that the fluid in the thermal management assembly can effectively cool the battery temperature.

[0037] In another aspect, the application provides a battery, comprising a thermal management assembly and a plurality of battery monomers. The thermal management assembly regulates the temperature of the plurality of battery monomers.

[0038] Because the thermal management assembly in the application is used, it helps to manage the battery and timely exchange heat, thereby improving the overall performance of the battery.

[0039] In another aspect, the application provides an electric device comprising a battery. The battery is used to provide electric energy for the electric device.

[0040] Because the battery in the application is used, it helps to improve the thermal management capability of the battery and thereby improve the overall performance of the battery, thereby improving the service life and performance of the electric device. BRIEF DESCRIPTION OF DRAWINGS

[0041] In the drawings, like reference numerals refer to like elements throughout the various drawings. These drawings are not necessarily to scale. It should be understood that these drawings have been simplified for the purpose of clarity and illustration and are not intended to limit the scope of the application.

[0042] Figure 1 Structure diagram of an electric device according to some embodiments of the application;

[0043] Figure 2 Structure diagram of a battery according to some embodiments of the application;

[0044] Figure 3 Exploded view of a current collector for some embodiments of the application;

[0045] Figure 4.1 Structure view of a current collector body for some embodiments of the application;

[0046] Figure 4.2 Structure view of another current collector body for some embodiments of the application;

[0047] Figure 4.3 Structure view of yet another current collector body for some embodiments of the application;

[0048] Figure 4.4 Structure view of still another current collector body for some embodiments of the application;

[0049] Figure 5 Structure view of a thermal management assembly for some embodiments of the application;

[0050] Figure 6 Exploded view of another current collector for some embodiments of the application;

[0051] Figure 7 Structure view of a profile structure for some embodiments of the application;

[0052] Figure 8 Structure view of another profile structure for some embodiments of the application.

[0053] BRIEF DESCRIPTION OF DRAWINGS

[0054] Electric device 1; battery 2, controller 3, motor 4;

[0055] Box 21, battery cell 22, thermal management assembly 23; current collector 24, thermal management component 25;

[0056] First part 211, second part 212;

[0057] Current collector body 241, first cover plate 242, second cover plate 243; profile structure 244;

[0058] Outer plate 2411, inner partition plate 2412, first space 2413, second space 2414, second through hole 2415, third through hole 2416, reinforcing rib 2417;

[0059] First through hole 2421; cavity 2441; first direction X. DETAILED DESCRIPTION

[0060] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical scheme of the present application, thus only serve as examples, and cannot be used to limit the protection scope of the present application.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the use of the terms "including," "comprising," "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Use of the term "about" in relation to a geographic location refers to a location within a 10 km radius of the geographic location.

[0062] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0063] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0064] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0065] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0066] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0067] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mount", "connect", "connect", "fix" and other terms should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, it can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0068] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment and aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0069] With the charging and discharging cycle of the battery, the battery will be damaged irreversibly when the temperature is too high or too low. Therefore, a thermal management assembly is needed to manage the temperature of the battery. The thermal management assembly exchanges heat with the plurality of battery cells that make up the battery, and cools or heats the battery cells to achieve the appropriate battery operating temperature and achieve the best performance of the battery.

[0070] The thermal management assembly using fluid medium in the closed pipeline for heat exchange generally includes a fluid collector and a fluid pipeline. The fluid collector generally serves as a flow collection component of the fluid pipeline, and introduces the fluid medium from the outside into the thermal management assembly. The fluid flows through the fluid pipeline and then returns to the fluid collector, and the fluid collector introduces the fluid medium to the outside of the thermal management assembly. In this way, the fluid reciprocates in the fluid collector and the fluid pipeline to form a continuous heat exchange process, and the thermal management assembly can take away or supplement the energy after cooling or heating the battery cells.

[0071] Therefore, the fluid collector generally needs to be provided with inlet / outlet liquid passages in communication with the outside fluid, and also needs to be provided with inlet / outlet liquid passages in communication with the fluid in the fluid pipeline. The plurality of fluid passages inside the fluid collector are generally assembled by splicing, inserting and / or welding various plate members, which makes the number of parts forming the fluid collector larger. The sealing of various passages requires higher precision of the assembly process of the fluid collector, which affects the production efficiency of the fluid collector.

[0072] In order to improve the production efficiency of the fluid collector, the embodiments of the present application adopt an integral molding process to form the main structure part of the fluid collector, which greatly reduces the number of parts, process steps and processing difficulty of assembling the fluid collector, improves the production efficiency of the fluid collector, and further improves the production efficiency of the battery and even the vehicle.

[0073] The current collector disclosed by the embodiments of the present application can be used in a thermal management assembly, and can also be used in a component including similar internal requirements for partitioning multiple functional spaces.

[0074] The thermal management assembly disclosed by the embodiments of the present application can be used in a battery or other system that requires necessary temperature regulation.

[0075] The embodiments of the present application provide a power consumption device using a battery as a power source. The power consumption device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric automobile, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, an electric aircraft toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0076] The following embodiments are described by taking the power consumption device 1 of an embodiment of the present application as an example for convenience of description.

[0077] Please refer to Figure 1 , Figure 1 for a structural schematic diagram of the power consumption device 1 of some embodiments of the present application. The power consumption device 1 can be a fuel automobile, a gas automobile, or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The battery 2 can be used not only as an operating power source of the power consumption device 1, but also as a driving power source of the power consumption device 1, to replace or partially replace fuel or natural gas to provide driving power for the power consumption device 1. When the battery 2 is used as a driving power source, the battery 2 can be arranged at the bottom, the head, or the tail of the power consumption device 1. The controller 3 is used to control the battery 2 to supply power to the motor 4, and the motor 4 is used to drive the wheels to travel.

[0078] Please refer to Figure 2 , Figure 2 for an exploded structural schematic diagram of the battery 2 of some embodiments of the present application. The battery 2 includes a box body 21, a battery monomer 22, and a thermal management assembly 23. The battery monomer 22 and the thermal management assembly 23 are accommodated in the box body 21.

[0079] The box 21 can be used to provide a containing space for the battery monomer 22 and other components, and the box 21 can adopt various structures. In some embodiments, the box 21 can include a first part 211 and a second part 212, the first part 211 and the second part 212 are covered with each other, and the first part 211 and the second part 212 jointly define a containing space. Alternatively, the first part 211 and the second part 212 can be hollow structures with one open side, and the open side of the first part 211 is covered with the open side of the second part 212. Alternatively, the second part 212 can also be a hollow structure with one open end, and the first part 211 can be a plate structure, and the first part 211 is covered with the open side of the second part 212. The box 21 can have various shapes, such as a cylinder, a cuboid, etc.

[0080] The battery monomer 22 can be multiple, and the multiple battery monomers 22 can be connected in series or parallel or mixed series-parallel in the box 21 to form a battery 2 with a certain capacity and voltage. The multiple battery monomers 22 can be directly connected in series or parallel or mixed together, and the whole of the multiple battery monomers 22 is contained in the box 21.

[0081] The heat management assembly 23 can be directly arranged outside the box 21 to exchange heat with the box 21, and then exchange heat with the battery monomer 22 through the box 21. It can also be arranged inside the box 21 to directly exchange heat with the battery monomer 22, and can be arranged at the top of the battery monomer 22, between the battery monomers 22, between the battery monomer 22 and the side wall of the box 21, or at the bottom of the battery monomer 22, to regulate the temperature of the battery 2.

[0082] The embodiment of the present application discloses a current collector 24, referring to Figure 3 、 Figure 4.1 The current collector 24 includes a current collector body 241. The current collector body 241 includes an outer plate 2411 and an inner partition plate 2412. The inner partition plate 2412 is arranged inside the outer plate 2411, and the inner partition plate 2412 divides the space surrounded by the outer plate 2411 into a first space 2413 and a second space 2414. The first space 2413 and the second space 2414 are water inlet space and water outlet space respectively. Wherein, the outer plate 2411 and the inner partition plate 2412 are integrally formed.

[0083] The collector 24 can be a structure for collecting fluid in the thermal management assembly 23, and is a component of the heat exchange pipe for introducing or discharging external fluid medium into or out of the thermal management assembly 23. The collector 24 can collect external fluid input into the thermal management assembly 23, or uniformly output the fluid in the thermal management assembly 23 after heat exchange by each fluid pipe to the outside. The collector 24 can be a regular solid shape such as a cuboid or a square, or an irregular solid shape. The collector 24 can be made of a material such as plastic or metal that is not easily water-absorbing.

[0084] The collector body 241 can be a component of the collector 24 for collecting fluid, and in the embodiment of the present application, the collector body 241 is formed by an integral molding method. The collector body 241 can be an open structure at both ends after molding, and can be sealed with other components at the opening. The inside of the collector body 241 includes a partition plate structure for separating fluid, and is used to form a space structure for collecting at least two fluids. The collector 24 needs to be in fluid communication with the external pipe, and also needs to be in fluid communication with the fluid pipe in the thermal management assembly 23, so the collector body 241 or the collector 24 is provided with a plurality of holes for fluid inlet and outlet, which are used to communicate with other structures to build a fluid circulation channel. The collector body 241 can be made of a material such as plastic or metal that is not easily water-absorbing.

[0085] The collector body 241 includes an external plate 2411 and an internal partition plate 2412. The external plate 2411 forms the overall contour of the outside of the collector body 241, and encloses the entire space for collecting fluid. The internal partition plate 2412 is arranged in the space enclosed by the external plate 2411, and divides the space into various fluid spaces as needed, to facilitate fluid circulation and heat exchange work. The external plate 2411 and the internal partition plate 2412 can be planar plates with uniform thickness, to facilitate processing. The external plate 2411 and the internal partition plate 2412 can be made of metal or plastic, and the materials of the two can be the same, to facilitate joint processing and manufacturing, and also facilitate integral molding.

[0086] The first space 2413 and the second space 2414 are at least two space regions contained in the current collector main body 241. The first space 2413 and the second space 2414 are two spaces in which the inner partition plate 2412 separates the outer plate 2411 into spaces. The first space 2413 and the second space 2414 are not in communication with each other in the current collector 24. Optionally, the first space 2413 can be a water inlet space, a space that converges external fluid. The second space 2414 can be a water outlet space, a space that outputs fluid to the outside. Similarly, the first space 2413 can also be a water outlet space, and the second space 2414 can also be a water inlet space; the setting of the water inlet and outlet functions depends on the direction of fluid circulation. The embodiment of the present application takes the first space 2413 as the water inlet space as an example. The second space 2414 can be a space surrounded by the inner side of the inner partition plate 2412 and the outer plate 2411. The first space 2413 can be a space surrounded by the outer side of the inner partition plate 2412 and the outer plate 2411. The shapes and volumes of the first space 2413 and the second space 2414 can be substantially the same to balance the pressure of water inlet and outlet; or they can be set to be different according to the heat exchange requirement, that is, by controlling the shapes and sizes of the two spaces, the fluid can reach a predetermined flow rate and pressure, etc.

[0087] The integral molding of the outer plate 2411 and the inner partition plate 2412 can be that the two components form an integral body, which can be directly integrally formed during manufacturing, thereby reducing the number of parts for assembly, the process, and improving the sealing performance. The integral molding can be manufactured by an integral injection molding process, or by a numerical control machine tool, such as a stamping, extrusion process, etc. The integral molding of the outer plate 2411 and the inner partition plate 2412 makes them an integral structure without additional connection structures such as welding points, shafts, and fixing devices, etc., which has excellent sealing performance in components suitable for fluid pipes and requiring space separation.

[0088] By integrally molding the outer plate 2411 and the inner partition plate 2412 of the current collector main body 241, the outer plate 2411 and the inner partition plate 2412 can be made at one time. Compared with the process of separately manufacturing the outer plate 2411 and the inner partition plate 2412, and then sealingly connecting the inner partition plate 2412 to the outer plate 2411 by welding or bonding, etc., the integral molding process reduces the number of parts and the process steps of the current collector main body 241, reduces the processing difficulty, effectively reduces the manufacturing cost and improves the production efficiency of the current collector main body 241, thereby improving the production efficiency of the current collector 24, the thermal management assembly 23, and even the battery 2.

[0089] In some embodiments, as shown in FIG. 24A, the inner partition plate 2412 is in a material continuous state in the first direction X. Figure 4.1

[0090] The first direction can be as shown in FIG. 24A.​Figure 4.1 The first direction X can be a direction in which the current collector body 241 is stretched when integrally formed.

[0091] The material continuity can mean that the material of the inner partition plate 2412 in the first direction X is continuous and same, in an extended state without holes, and is not in a discontinuous state formed by splicing or welding of multiple plates. The inner partition plate 2412 is arranged to have a fixed shape and position relative to the outer plate 2411, and the shape and relative position of the outer plate 2411 and the inner partition plate 2412 are not substantially changed in the first direction X during the integral forming process. After the forming is completed, the functional space required by the current collector 24 formed by the outer plate 2411 and the inner partition plate 2412 is obtained.

[0092] By arranging the inner partition plate 2412 in the first direction X to be in a material continuous state, the manufacturing material is continuous, which makes the processing easier, the mold design simpler, and the processing equipment simpler.

[0093] In some embodiments, as shown in FIG. 1, the inner partition plate 2412 has a same shape in any cross section perpendicular to the first direction X. Figure 4.1

[0094] The cross section of the inner partition plate 2412 perpendicular to the first direction X can be a cross section obtained by cutting the inner partition plate 2412 in a direction perpendicular to the first direction X. Any cross section of the inner partition plate 2412 thus obtained is of the same shape.

[0095] By designing the inner partition plate 2412 to have the same shape in any cross section perpendicular to the first direction X, a plurality of current collector bodies 241 can be formed at one time, and then cut to form a single current collector body 241, so that batch manufacturing of the current collector body 241 can be conveniently realized.

[0096] In some embodiments, the cross section of the inner partition plate 2412 perpendicular to the first direction X is in a U shape; and / or the cross section of the inner partition plate 2412 perpendicular to the first direction X is in a V shape.

[0097] As shown in FIG. 1, the inner partition plate 2412 in a U shape is connected to the outer plate 2411 at two ends of the “U” opening, and encloses a water inlet space or a water outlet space of the current collector 24. Figure 4.1 The inner partition plate 2412 in a U shape has a moderate bending angle and a smooth corner transition, without sharp and abrupt angles, so that the material can flow smoothly during the integral forming, and is not easy to break and produce burrs. Also, the fluid space formed by the inner partition plate 2412 in a U shape has a relatively small resistance to fluid flow.

[0098] As shown in FIG. 1, the inner partition plate 2412 in a V shape is connected to the outer plate 2411 at two ends of the “V” opening, and encloses a water inlet space or a water outlet space of the current collector 24. Figure 4.2 ​As shown, the inner partition plate 2412 of the V shape is connected with the outer plate 2411 at both ends of the "V" opening, and encloses the water inlet space or the water outlet space of the current collector 24. The inner partition plate 2412 of the V shape design only includes two planes. For example, when the lengths of the three plates enclosing the U shape are all a, the enclosed area is a2, and the inner partition plate 2412 of 3a length is required, while the V shape only requires two plates of √2a to enclose the same area, which makes the V shape design use less material and is conducive to reducing costs.

[0099] Alternatively, the cross-sectional shape of the inner partition plate 2412 separating the water inlet space and the water outlet space can also be a combination of the U or V shapes according to the actual product needs.

[0100] In some embodiments, as shown, Figure 4.1 The one-piece forming mode includes extrusion forming.

[0101] Extrusion forming is also called extrusion molding. Extrusion forming can refer to a forming method in which a material that is deformed by heating is pushed through a die by the extrusion of external force to form a continuous profile with a constant cross section. The extrusion forming process mainly includes processes such as feeding, heating deformation, extrusion forming, sizing, and cooling. Extrusion forming can be applied to metals such as aluminum and materials with good ductility such as plastics. The cross-sectional shape of the product along the extrusion direction is the same, and the product along the extrusion direction is in a continuous state of material. Other process processing such as punching and milling can be performed on the main structure after extrusion forming to form a specific product structure.

[0102] The current collector main body 241 is manufactured by the extrusion forming process, so that the production of the current collector main body 241 is continuous and batched, and the production efficiency of the current collector main body 241 is higher. Moreover, the equipment used for extrusion forming is simpler than other one-piece forming equipment, and the production cost of this process is lower.

[0103] In some embodiments, as shown, Figure 3 The current collector 24 further includes a first through hole 2421 for introducing fluid into the current collector 24 or leading fluid out of the current collector 24. The current collector 24 includes a first cover plate 242 and a second cover plate 243, which are respectively sealingly connected at both ends of the opening of the outer plate 2411, and at least one of the first cover plate 242 and the second cover plate 243 is provided with at least two first through holes 2421.

[0104] The first through hole 2421 is a hole on the current collector 24, which is connected with an external device or pipeline, so that fluid can flow into or out of the current collector 24 from the external device or pipeline. The first through hole 2421 is arranged at a position communicating with the water inlet space and the water outlet space of the current collector 24, so that fluid can flow into or out of the water inlet space and the water outlet space of the current collector 24. The first through hole 2421 can include at least two, at least one of which is used to introduce fluid into the current collector 24, and at least one of which is used to introduce fluid out of the current collector 24. The shape of the first through hole 2421 can be a regular shape such as a circle, a square or a rectangle, or can be arranged as an irregular shape such as an incomplete circle. The irregular shape can be used as a kind of foolproof design to quickly identify the position of the board, facilitating quick positioning and installation.

[0105] The first cover plate 242 and the second cover plate 243 are respectively covered on both ends of the current collector main body 241 and are sealingly connected at positions of openings at both ends of the current collector main body 241. The current collector main body 241 has a structure including openings at both ends due to the manufacturing process of one-piece forming, and the current collector 24 is a sealed structure except for the pre-set through holes for fluid inlet and outlet. The openings formed due to the processing process need to be sealed by the first cover plate 242 and the second cover plate 243. The first cover plate 242 and the second cover plate 243 can be made of metal materials such as aluminum and copper, or can be made of plastic materials. The materials of the first cover plate 242 and the second cover plate 243 can be the same as the material of the current collector main body 241, which is easier to connect and has higher connection strength.

[0106] Optionally, the first cover plate 242 and the second cover plate 243 can each be provided with at least one first through hole 2421, or the first cover plate 242 can be provided with at least two first through holes 2421, or the second cover plate 243 can be provided with at least two first through holes 2421.

[0107] By providing at least two first through holes 2421 on at least one of the first cover plate 242 and the second cover plate 243, the first through holes 2421 can be arranged on both sides of the current collector main body 241 or on one side according to the use demand and space demand of the thermal management assembly 23.

[0108] In some embodiments, as shown in Figure 4.3 , Figure 4.4 , Figure 5 The board surrounding the first space 2413 is provided with one or more second through holes 2415, and the board surrounding the second space 2414 is provided with one or more third through holes 2416. The second through holes 2415 and the third through holes 2416 are used for fluid inlet and outlet of the current collector 24 and the thermal management component 25, and the number of the second through holes 2415 and the third through holes 2416 is the same.

[0109] The thermal management component 25 can be a component arranged in the battery 2 to manage the temperature of the battery cell 22. The thermal management component 25 can be in direct contact with the battery cell 22 for heat exchange; or can be in contact with the box 21 for heat exchange, and then through the box 21 to be in contact with the battery cell 22 for heat exchange, so as to realize the heat exchange between the thermal management component 25 and the battery cell 22. The thermal management component 25 is part of the thermal management assembly 23, and the thermal management component 25 can include a multi-pipe structure for heat exchange by using a liquid medium or a gas medium. The thermal management component 25 can be made of a material with good heat conduction, such as metal, non-metal or alloy. The shape of the thermal management component 25 can be designed according to the space position of placement, and can be a shape suitable for sufficient heat exchange, such as a flat and long pipe or a cuboid.

[0110] The second through hole 2415 and the third through hole 2416 can be holes arranged on the current collector 24, and are in communication with the thermal management component 25, so that the fluid can flow into the thermal management component 25 from the current collector 24 or flow out of the thermal management component 25 to the current collector 24. The second through hole 2415 and the third through hole 2416 are arranged at positions in communication with the water inlet space and the water outlet space of the current collector 24, so that the fluid can enter and exit the water inlet space and the water outlet space of the current collector 24. The second through hole 2415 and the third through hole 2416 can be regular patterns such as circles, squares or rectangles, or can be irregular shapes such as incomplete circles or circle-like shapes. The second through hole 2415 and the third through hole 2416 can have the same shape, which is convenient for processing and manufacturing. Alternatively, the second through hole 2415 and the third through hole 2416 can be arranged on the same plate, which is convenient for one-time processing and improves the space utilization of the current collector 24 in the battery 2. Alternatively, as shown in FIG. 24B, the second through hole 2415 and the third through hole 2416 can be arranged on different plates to meet the individualized needs of fluid inflow and outflow. Figure 4.3

[0111] Because the number of the second through hole 2415 and the third through hole 2416 is the same, the water inlet channel and the water outlet channel of the current collector 24 to the thermal management component 25 are one-to-one corresponding, so that the fluid in the thermal management component 25 flows uniformly, and the heat exchange between the thermal management component 25 and the battery cell 22 is more balanced.

[0112] In some embodiments, the second through hole 2415 and the third through hole 2416 are arranged on the outer plate 2411 respectively, and the second through hole 2415 and the third through hole 2416 are located on different plates of the current collector 24 than the first through hole 2421.

[0113] Alternatively, as shown in FIG. 24B, the second through hole 2415 and the third through hole 2416 can be arranged on different plates to meet the individualized needs of fluid inflow and outflow. Figure 4.1 ​As shown, the second through hole 2415 and the third through hole 2416 can be arranged on the same plate of the outer plate 2411, facilitating connection with the thermal management component 25 to form a fluid flow channel of the current collector 24 and the thermal management component 25, and facilitating processing and manufacturing of the second through hole 2415 and the third through hole 2416.

[0114] Optionally, as shown in FIG. 24B, the second through hole 2415 and the third through hole 2416 can be arranged on different plates of the outer plate 2411 to meet the design of different flow channels. Figure 4.3

[0115] Optionally, the first through hole 2421 can be arranged on two cover plates respectively, so that the external pipelines connected with the first through hole 2421 do not occupy each other on one side, and are more evenly distributed.

[0116] Optionally, the two first through holes 2421 can be arranged on the same cover plate, so that the external pipelines connected with the first through hole 2421 are distributed on one side, and the space utilization is higher.

[0117] The water channel pipeline connected with the first through hole 2421 and the thermal management component 25 connected with the second through hole 2415 and the third through hole 2416 need to occupy a certain space, and being arranged on different plates of the current collector 24 makes them distributed on different sides, so as not to interfere with each other while achieving reasonable close packing, and improving the space utilization of the current collector 24 and the thermal management component 23 in the battery 2.

[0118] In some embodiments, as shown in FIG. 24A, the outer plate 2411 is provided with a reinforcing rib 2417 facing the first space 2413 and / or the second space 2414. Figure 6

[0119] ​​The reinforcing rib 2417 can be a component arranged on the outer plate 2411 to reinforce the connection strength of the current collector body 241 and the cover plate. The reinforcing rib 2417 can be fixed on the outer plate 2411 by welding or the like, or can be formed in an integrated manner with the current collector body 241 by designing a suitable mold. The reinforcing rib 2417 is arranged inside the current collector body 241, and the length and height thickness dimensions thereof are designed mainly considering the factor of not affecting the flow of fluid in the space of the current collector 24. For example, the reinforcing rib 2417 is arranged in a form substantially parallel to the inner partition plate 2412, and is arranged on the outer plate 2411 opposite the second through hole 2415 and the third through hole 2416, or can be arranged on the two side plates opposite the outer plate 2411. Alternatively, the height of the reinforcing rib 2417 is not more than half the height of the current collector body 241. The reinforcing rib 2417 can be made of metal such as aluminum or copper, or can be made of plastic material. When the material of the reinforcing rib 2417 is arranged to be the same as the material of the current collector body 241, it is convenient for welding processing and improves the connection strength thereof. The reinforcing rib 2417 can be arranged in the first space 2413, or can be arranged in the second space 2414, or can be arranged in both the first space 2413 and the second space 2414. The reinforcing rib 2417 can be arranged symmetrically on the outer plate 2411 in two or an even number, or can be arranged asymmetrically in one or a plurality.

[0120] By arranging the reinforcing rib 2417 inside the current collector body 241, when the cover plate is welded with the current collector body 241, the cover plate is also welded with the reinforcing rib 2417 inside the current collector body 241, thereby increasing the welding area of the cover plate, and thereby reinforcing the welding strength of the cover plate and the current collector body 241, and thereby improving the overall structural strength of the current collector 24.

[0121] The embodiment discloses a manufacturing method of a current collector 24, as shown in Figure 3 7 The current collector 24 includes a current collector body 241. The current collector body 241 includes an outer plate 2411 and an inner partition plate 2412. The inner partition plate 2412 is arranged inside the outer plate 2411, and the inner partition plate 2412 divides the space surrounded by the outer plate 2411 into a first space 2413 and a second space 2414. The first space 2413 and the second space 2414 are water inlet spaces and water outlet spaces, respectively. The outer plate 2411 is integrally formed with the inner partition plate 2412. The current collector body 241 is formed in an integrated manner.

[0122] The current collector body 241 is processed in an integrated manner, and the outer plate 2411, the inner partition plate 2412, the first space 2413, the second space 2414 and the like of the current collector body 241 can be processed at one time. ​

[0123] The current application adopts the method of one-piece manufacturing to manufacture the current collector main body 241, which combines the original external plate 2411 and internal partition plate 2412 and other numerous components into one component, thereby improving the production efficiency of the current collector main body 241. The number of components of the current collector 24 is effectively reduced, the manufacturing process steps of the current collector 24 are simplified, the production time and cost are reduced, thereby improving the production efficiency of the current collector 24.

[0124] In some embodiments, as shown in FIG. 4, the profile is extruded by a mold, and a profile structure 244 with two cavities 2441 is formed along the extrusion direction, the cavities 2441 being used to form the first space 2413 and the second space 2414. Figure 7

[0125] The profile can be a metal such as aluminum, iron, or a material such as plastic that has certain strength and toughness. The profile can be made into an object with a certain geometric shape through processes such as rolling, extrusion, and casting. After processing, the profile can obtain the current collector main body 241 and the cover plate and other components.

[0126] The cavity 2441 can refer to a structure with an outer shell and an inner hollow. The cavity 2441 is the structure of the profile after extrusion by the mold. The shape of the cavity 2441 is determined according to the mold. Different shapes of the cavity 2441 are obtained by setting the shape of the mold. The two cavities 2441 correspond to the first space 2413 and the second space 2414 of the current collector main body 241, and the cross sections of the two cavities 2441 and the first space 2413 and the second space 2414 in the plane perpendicular to the first direction X are the same. After processing, the two cavities 2441 can obtain the first space 2413 and the second space 2414.

[0127] The profile structure 244 can refer to the structure of the profile after extrusion molding. The profile structure 244 can be a structure with an outer shell, an inner plate, and two cavities 2441. The extrusion direction is the direction of the profile being extruded, which can be the same as the first direction X.

[0128] The specific profile structure 244 is made by the extrusion molding method, so that the extruded profile structure 244 has the characteristics of continuous material and the same cross-sectional shape along the extrusion direction as the cross-sectional shape of the current collector main body 241, which helps to process the profile structure 244 to quickly obtain the current collector main body 241. In addition, the mold and processing equipment used in this process are simple, which helps to produce continuously and mass-produce a large number of the same profile structure 244, thereby improving the production efficiency of the current collector main body 241 and the overall production efficiency of the current collector 24.

[0129] In some embodiments, as shown in FIG. 4, the profile is extruded by a mold, and a profile structure 244 with two cavities 2441 is formed along the extrusion direction, the cavities 2441 being used to form the first space 2413 and the second space 2414. Figure 7 ​As shown, a profile structure 244 including at least one current collector body 241 is formed along the extrusion direction, and the profile structure 244 is cut to obtain the single current collector body 241.

[0130] The cutting can include thermal cutting, erosive cutting, mechanical cutting, etc. The thermal cutting process cuts or melts through the material to be cut using heat, such as flame cutting, plasma cutting, laser cutting, etc. The erosive cutting uses air, water or other natural forces to erode the material, such as water flow cutting. The mechanical cutting process uses physical force to cut the object, such as sawing, shearing, etc.

[0131] The profile structure 244 of the current collector body 241 formed in one piece can include a plurality of current collector bodies 241. The profile structure 244 can be cut according to a certain width size to quickly obtain a plurality of current collector bodies 241. Compared with the current collector body 241 assembled by a plurality of parts, directly cutting the profile structure 244 can greatly simplify the process flow, mass-produce stable performance products, and improve production efficiency.

[0132] In some embodiments, as shown in Figure 3 A first cover plate 242 and a second cover plate 243 are provided to be respectively sealed and connected to the two ends of the current collector body 241 to form a sealed structure of the single current collector 24.

[0133] The sealed connection can refer to the connection of the cover plate and the current collector body 241 to form a space, so that the fluid inside the current collector 24 does not leak out. The sealed connection includes welding, insertion, bonding and other connection methods.

[0134] The cover plate is sealed and connected to the two ends of the current collector body 241 to form the current collector 24 structure. The medium in the current collector 24 does not flow out of the current collector body 241 opening, which plays a sealing role.

[0135] In some embodiments, as shown in Figure 3 , 8 As shown, the first through hole 2421 is punched on the first cover plate 242 and / or the second cover plate 243 before or after the first cover plate 242 and the second cover plate 243 are respectively installed on the current collector body 241; and / or, the second through hole 2415 and the third through hole 2416 are punched on the external plate 2411 simultaneously or respectively before or after the profile structure 244 is cut.

[0136] After the first cover plate 242 and the second cover plate 243 are installed on the current collector body 241, holes can be drilled in the first cover plate 242 and / or the second cover plate 243 to obtain the first through hole 2421. This processing sequence helps to improve the strength of the cover plate welded to the current collector body 241. Alternatively, the first through hole 2421 can be drilled in the first cover plate 242 and / or the second cover plate 243 first, and then the drilled first cover plate 242 and the second cover plate 243 can be installed on the current collector body 241. This processing sequence facilitates the batch processing of the first through hole 2421.

[0137] Before cutting the profile structure 244, holes can be drilled in the outer plate 2411 to obtain the second through hole 2415 and the third through hole 2416. Then, a profile of appropriate width can be cut to obtain the current collector body 241. This processing sequence has high drilling efficiency. Alternatively, after cutting the profile structure 244 to obtain the current collector body 241, holes can be drilled in the outer plate 2411 to obtain the second through hole 2415 and the third through hole 2416. This processing efficiency allows for different drilling operations to be performed on each current collector body 241 according to requirements.

[0138] By setting a relatively flexible drilling sequence, the drilling time for the first through hole 2421 can be either before or after the cover plate is installed on the current collector body 241, and the drilling time for the second through hole 2415 and the third through hole 2416 can be either before or after the profile structure 244 is cut. During production, drilling can be done in either order according to specific needs, facilitating production processes.

[0139] In some embodiments, such as Figure 4.1 ,like Figure 6 As shown, before the first cover plate 242 and the second cover plate 243 are respectively installed on the fluid collector body 241, a reinforcing rib 2417 is welded on the outer plate 2411 of the fluid collector body 241, with the reinforcing rib 2417 facing the first space 2413 and / or the second space 2414.

[0140] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature, or high pressure. Energy sources for welding include gas flames, electric arcs, lasers, electron beams, friction, and ultrasound. Metal welding can include fusion welding, pressure welding, and brazing.

[0141] The reinforcing rib 2417 is welded inside the outer plate 2411 of the current collector body 241 before the cover plate is installed on the current collector body 241, and is located in the first space 2413 or the second space 2414. When the cover plate is welded on the current collector body 241 with the reinforcing rib 2417, the welding area includes both the original opening of the current collector body 241 and the location of the reinforcing rib 2417, and the welding area is larger. The strength of the cover plate and the current collector body 241 after welding is improved, and the overall strength of the current collector 24 is improved.

[0142] The present application provides a thermal management assembly 23, as shown in Figure 5 The water inlet of the thermal management component 25 is in communication with the first space 2413, and the water outlet of the thermal management component 25 is in communication with the second space 2414.

[0143] The thermal management assembly 23 can be an assembly for adjusting the temperature of the battery 2, including cooling or heating the battery 2. The thermal management assembly 23 is part of the battery 2. The thermal management assembly 23 includes a current collector 24 and a thermal management component 25. The thermal management assembly 23 can include a water cooling plate, an air cooling plate, a water cooling pipe or an air cooling pipe, etc. Optionally, as shown in Figure 2 The thermal management assembly 23 can be arranged at the bottom of the box 21 and indirectly contacts the battery monomer 22 to exchange heat.

[0144] In this embodiment, the first space 2413 can be a water inlet space, and the second space 2414 can be a water outlet space. The fluid flows from the first space 2413 through the water inlet of the thermal management component 25 into the thermal management component 25, and then flows from the inside of the thermal management component 25 through the water outlet into the second space 2414.

[0145] By arranging the water inlet and the water outlet of the thermal management component 25 in communication with the current collector 24, a heat exchange flow channel in the thermal management assembly 23 is constructed, so that the fluid in the thermal management assembly 23 uniformly and stably adjusts the temperature of the battery 2.

[0146] The present application provides a battery 2, as shown in Figure 2As shown, the battery 2 includes a thermal management assembly 23 and a plurality of battery cells 22. The thermal management assembly 23 regulates the temperature of the plurality of battery cells 22. The battery 2 can be a secondary battery or a primary battery. Each battery cell 22 can be a secondary battery or a primary battery; can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cells 22 in the same battery 2 can be of the same chemical system or structural shape, or can be of different chemical systems or structural shapes. The battery cells 22 can be in the shape of a cylinder, a flat body, a cuboid, or other three-dimensional shapes. Because the thermal management assembly 23 is used in the present application, the thermal management of the battery 2 is facilitated, heat exchange of the battery 2 is timely performed, and the overall performance of the battery 2 is improved.

[0147] The present application provides a power-using device 1, such as Figure 1 As shown, the battery 2 includes a thermal management assembly 23 and a plurality of battery cells 22. The thermal management assembly 23 regulates the temperature of the plurality of battery cells 22. The battery 2 can be a secondary battery or a primary battery. Each battery cell 22 can be a secondary battery or a primary battery; can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cells 22 in the same battery 2 can be of the same chemical system or structural shape, or can be of different chemical systems or structural shapes. The battery cells 22 can be in the shape of a cylinder, a flat body, a cuboid, or other three-dimensional shapes. Because the thermal management assembly 23 is used in the present application, the thermal management of the battery 2 is facilitated, heat exchange of the battery 2 is timely performed, and the overall performance of the battery 2 is improved.

[0148] According to some embodiments of the present application, as shown in Figure 3 , 4.1 , 6, the present application provides a current collector 24, which includes a current collector body 241, a first cover plate 242, and a second cover plate 243. The current collector body 241 includes an outer plate 2411 and an inner partition plate 2412, and the inner partition plate 2412 divides the space enclosed by the outer plate 2411 into a first space 2413 and a second space 2414. The outer plate 2411 and the inner partition plate 2412 are integrally formed by extrusion molding. Optionally, the cross-sectional shape of the inner partition plate 2412 along the integral formation direction X is U-shaped. Optionally, the outer plate 2411 is provided with a reinforcing rib 2417 facing the first space 2413.

[0149] The current collector body 241 is made by extrusion molding, which reduces the number of parts and process steps for assembling the current collector body 241, improves the overall sealing performance of the current collector 24, reduces the processing difficulty and manufacturing cost, and improves the production efficiency of the current collector 24 and even the thermal management assembly 23.

[0150] According to some embodiments of the present application, as shown in Figure 3 , 6As shown in FIGS. 7, the application provides a manufacturing method of the current collector 24. The current collector body 241 including the outer plate 2411 and the inner partition plate 2412 is formed into a profile structure 244 by extrusion molding, and the profile structure 244 is cut to obtain a single current collector body 241. The reinforcing rib 2417 is welded on the outer plate 2411 of the current collector body 241, and the first cover plate 242 and the second cover plate 243 are respectively sealed and connected to the two ends of the current collector body 241 to form a sealed structure of the single current collector 24.

[0151] The manufacturing method of the current collector 24 includes an extrusion molding process, which can quickly manufacture a batch of current collector bodies 241 with stable structure and performance, reduces the number of processing parts of the entire current collector body 241, reduces the assembly process steps, and has a lower process difficulty, thereby improving the production efficiency of the current collector 24 and the thermal management assembly 23.

[0152] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and the specification of the application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A current collector, characterized in that, include: The water collector body includes an outer plate and an inner partition plate. The inner partition plate is disposed inside the outer plate and divides the space enclosed by the outer plate into a first space and a second space. The first space and the second space are respectively a water inlet space and a water outlet space. The outer plate and the inner partition plate are integrally formed.

2. The current collector according to claim 1, wherein, The internal partition is in a continuous material state in the first direction.

3. The current collector according to claim 2, wherein, The internal partition plates have the same cross-sectional shape in any direction perpendicular to the first direction.

4. The current collector according to claim 2, wherein, The internal partition plate has a U-shaped cross-section perpendicular to the first direction; and / or The internal partition plate has a V-shaped cross-section perpendicular to the first direction.

5. The current collector according to any one of claims 1-4, wherein, The integral molding method includes extrusion molding.

6. The current collector according to any one of claims 1-4, wherein, The collector further includes a first through hole for introducing fluid into or draining fluid from the collector. The collector includes a first cover plate and a second cover plate, which are respectively sealed to both ends of the opening of the outer plate. At least one of the first cover plate and the second cover plate is provided with at least two of the first through holes.

7. The current collector according to claim 6, wherein, One or more second through holes are provided on the plate forming the first space, and one or more third through holes are provided on the plate forming the second space. The second through holes and the third through holes are used as fluid inlets and outlets for connecting the current collector and the thermal management component. The number of second through holes and the number of third through holes are the same.

8. The current collector according to claim 7, wherein, The second through hole and the third through hole are respectively disposed on the outer plate, and the second through hole and the third through hole are located on the plate of the current collector, which is different from the first through hole.

9. The current collector according to any one of claims 1-4, wherein, The outer panel is provided with reinforcing ribs facing the first space and / or the second space.

10. A method for manufacturing a current collector, characterized in that, The current collector is the current collector according to any one of claims 1-9, and the current collector body is formed by integral molding.

11. The method according to claim 10, wherein, The profile is extruded according to a mold, and a profile structure with two cavities is formed along the extrusion direction. The cavities are used to form the first space and the second space.

12. The method according to claim 11, wherein, The profile structure comprising at least one of the current collector bodies is formed along the extrusion direction, and the profile structure is cut to obtain a single current collector body.

13. The method according to claim 12, wherein, A first cover plate and a second cover plate are provided, which are respectively sealed and connected to both ends of the current collector body to form a sealed structure for a single current collector.

14. The method according to claim 13, wherein, Before or after the first cover plate and the second cover plate are respectively installed on the fluid collector body, a first through hole is obtained by drilling holes in the first cover plate and / or the second cover plate; and / or, Before or after cutting the profile structure, holes are drilled simultaneously or separately on the outer plate to obtain a second through hole and a third through hole.

15. The method according to claim 13 or 14, wherein, Before the first cover plate and the second cover plate are respectively installed on the fluid collector body, reinforcing ribs are welded to the outer plate of the fluid collector body, and the reinforcing ribs face the first space and / or the second space.

16. A thermal management component, characterized in that, include The current collector as described in any one of claims 1-9; and A thermal management component, wherein the inlet of the thermal management component is connected to the first space, and the outlet of the thermal management component is connected to the second space.

17. A battery, characterized in that, include: The thermal management component as described in claim 16; as well as Multiple battery cells, the thermal management component regulates the temperature of the multiple battery cells.

18. An electrical appliance, characterized in that, include: The battery of claim 17 is used to provide electrical energy to the electrical device.

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