Current collector and manufacturing method thereof, thermal management assembly, battery and electric device

Abstract

The invention discloses a current collector and a manufacturing method thereof, a thermal management assembly, a battery and an electric device. A current collector includes a current collector body including an outer plate and an inner partition plate. The inner partition plate is arranged in the outer plate and divides the space defined by the outer plate into a first space and a second space. And the first space and the second space are respectively a water inlet space and a water outlet space. Wherein the outer plate and the inner partition plate are integrally formed. According to the current collector provided by the embodiment of the invention, the current collector main body is subjected to an integral forming process, so that the process steps and the number of structural parts of the current collector main body are reduced, and the processing difficulty and the manufacturing cost are reduced, thereby rapidly producing the current collector main body and improving the production efficiency of the current collector.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a current collector and a manufacturing method thereof, a thermal management component, a battery and an electrical device. Background Art

[0002] Energy conservation and emission reduction are 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 advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] During the process of charging and discharging, the internal structure of the battery will cause temperature fluctuations due to the charging and discharging of the battery itself, thus affecting the performance of the battery. Therefore, thermal management components are needed to control the temperature. However, the structure of thermal management components is complex, and the assembly process of parts is complex and requires high process precision. These problems often affect the production efficiency of thermal management components, thereby affecting the production efficiency of batteries, and then affecting the production efficiency of vehicles. Summary of the invention

[0004] In view of the above problems, the present application provides a current collector for use in a thermal management component and a method for manufacturing the same, a thermal management component, a battery, and an electrical device. In order to solve the problem that the current collector has a complex structure, is difficult to process, and requires multiple processing steps, the current collector manufacturing steps are optimized through an integrated molding process, thereby improving the production efficiency of the current collector, and further improving the production efficiency of the thermal management component. Specifically, the present application includes the following technical solutions.

[0005] On the one hand, an embodiment of 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 a water inlet space and a water outlet space, respectively. The outer plate and the inner partition plate are integrally formed.

[0006] Because the outer plate and the inner partition plate are formed using an integrated molding process, the process steps and the number of structural parts of the current collector are 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 panel is materially continuous in the first direction.

[0008] The continuous manufacturing material of the components makes the collector body easier to process, the mold design is simpler, and the processing equipment is simpler.

[0009] In some embodiments, any cross-sectional shapes of the internal partition plates in a direction perpendicular to the first direction are the same.

[0010] This allows a collection of multiple current collector bodies to be formed in one molding, which can then be cut to form a single current collector body, making it easy to achieve batch production of the current collector bodies.

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

[0012] The U-shaped structure design has a smooth transition at the corners, and is not easy to break and produce burrs during one-piece molding, so that the fluid space formed has less resistance to fluid flow. The V-shaped structure design uses less material, which is conducive to reducing costs.

[0013] In some embodiments, the integral molding method includes extrusion molding.

[0014] The extrusion molding process enables the continuous production of the collector body with higher production efficiency. In addition, the equipment used for extrusion molding is simpler than other one-piece molding equipment, and the production cost of this process is lower.

[0015] In some embodiments, the current collector further includes a first through hole for introducing a fluid into the current collector or for flowing a fluid out of the current collector. The current collector includes a first cover plate and a second cover plate, and the first cover plate and the second cover plate are respectively sealed and connected to both ends of the opening of the external 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 may be disposed on both sides of the current collector body or on one side according to the use requirements and space requirements of the thermal management component.

[0017] In some embodiments, one or more second through holes are provided on the plate enclosing the first space. One or more third through holes are provided on the plate enclosing the second space. The second through holes and the third through holes are used as fluid inlets and outlets for connecting the current collector to the thermal management component. The number of the second through holes and the third through holes is the same.

[0018] The water inlet and outlet channels from the current collector to the thermal management component correspond one to one, so that the fluid inside the thermal management component flows evenly, ensuring that the heat exchange of the thermal management component to each position of the external battery cell is balanced.

[0019] In some embodiments, 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 a plate of a current collector 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 connected to the first through hole and the thermal management component connected to 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 will not interfere with each other.

[0021] In some embodiments, the outer plate is provided with reinforcing ribs facing the first space and / or the second space.

[0022] Reinforcing ribs are arranged inside the current collector body to increase the welding area between the current collector body and the cover plate, thereby strengthening the welding strength between the two and improving the overall structural strength of the current collector.

[0023] On the other hand, the present invention provides a method for manufacturing a current collector. The current collector body of the above-mentioned current collector is formed by an integral molding method.

[0024] The current collector body is manufactured by an integrated molding method, which reduces the current collector parts, saves production costs, simplifies the manufacturing process steps, reduces production time, and improves production efficiency.

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

[0026] The extrusion molding process uses simple molds and processing equipment, and can mass-produce a large number of identical profile structures. The current collector body can be obtained through simple procedures, thereby improving the current collector production efficiency.

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

[0028] Compared with the original method of welding multiple parts into 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 production efficiency.

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

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

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

[0032] The order of punching is relatively flexible, so that production and processing can be done first or 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, reinforcing ribs are welded on the outer plate of the current collector body, and the reinforcing ribs face the first space and / or the second space.

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

[0035] In another aspect, the present application provides a thermal management assembly, comprising the above-mentioned current collector and a thermal management component. The water inlet of the thermal management component is communicated with the first space, and the water outlet of the thermal management component is communicated with the second space.

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

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

[0038] Because the thermal management component in this application is used, it helps with the thermal management of the battery, performs heat exchange on the battery in a timely manner, and improves the overall performance of the battery.

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

[0040] Because the use of the battery in the present application helps to improve the thermal management capability of the battery and thus improve the overall performance of the battery, thereby increasing the service life and performance of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0042] Figure 1 A schematic diagram of the structure of an electric device in some embodiments of the present application;

[0043] Figure 2 A schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0044] Figure 3 This is a schematic diagram of the exploded structure of the current collector of some embodiments of the present application;

[0045] Figure 4.1 This is a schematic structural diagram of the current collector body in some embodiments of the present application;

[0046] Figure 4.2 A schematic structural diagram of another current collector body according to some embodiments of the present application;

[0047] Figure 4.3 This is a schematic structural diagram of another current collector body in some embodiments of the present application;

[0048] Figure 4.4 This is a schematic structural diagram of another current collector body in some embodiments of the present application;

[0049] Figure 5 A schematic diagram of the structure of a thermal management component in some embodiments of the present application;

[0050] Figure 6 A schematic diagram of the exploded structure of another current collector according to some embodiments of the present application;

[0051] Figure 7 This is a schematic diagram of the structure of the profile structure of some embodiments of the present application;

[0052] Figure 8 This is a schematic structural diagram of another profile structure of some embodiments of the present application.

[0053] Description of reference numerals:

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

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

[0056] Part I 211, Part II 212;

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

[0058] External plate 2411, internal 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 following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0062] In the description of the embodiments of the present application, technical terms such as "first" and "second" 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 to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may 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, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0065] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0066] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0067] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0068] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0069] As the battery's charge and discharge cycle progresses, the battery temperature will be too high or too low, which will cause irreversible damage to the battery. Therefore, a thermal management component is needed to manage the battery temperature. The thermal management component exchanges heat with the multiple battery cells that make up the battery, dissipates heat or heats the battery cells, reaches the appropriate battery operating temperature, and exerts the best performance of the battery.

[0070] Thermal management components that use fluid media in closed pipes for heat exchange generally include a current collector and a fluid pipe. The current collector generally serves as a confluence component of the fluid pipe, introducing the fluid medium from the outside into the thermal management component. After passing through many fluid pipes, the fluid flows back to the current collector, and the current collector leads the fluid medium out of the thermal management component. In this way, the fluid circulates back and forth in the current collector and the fluid pipe to form a continuous heat exchange process, and the thermal management component can take away or replenish the energy after dissipating or heating the battery cell.

[0071] Therefore, the current collector generally needs to be provided with an inlet / outlet liquid channel connected to the external fluid, and also needs to be provided with an inlet / outlet liquid channel connected to the fluid in the fluid pipeline. The many fluid channels inside it are generally realized by assembling various panels by splicing, plugging and / or welding them, so that the number of parts forming the current collector is relatively large. Achieving the sealing of various channels requires higher precision requirements on the assembly process of the current collector, which affects the production efficiency of the current collector.

[0072] In order to improve the production efficiency of the current collector, the embodiment of the present application adopts an integrated molding process to form the main structure of the current collector, which greatly reduces the number of parts, process steps and processing difficulty of assembling the current collector, improves the production efficiency of the current collector, and thus improves the production efficiency of the battery and even the vehicle.

[0073] The current collector disclosed in the embodiment of the present application can be used in a thermal management component, and can also be used in a similar component that needs to separate many functional spaces inside.

[0074] The thermal management component disclosed in the embodiments of the present application can be used in batteries or other systems that require necessary temperature regulation.

[0075] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0076] For the convenience of description, the following embodiments are described by taking an electrical device 1 according to an embodiment of the present application as an example.

[0077] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the electric device 1 of some embodiments of the present application. The electric device 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The battery 2 can not only be used as an operating power source for the electric device 1, but also as a driving power source for the electric device 1, replacing or partially replacing fuel or natural gas to provide driving power for the electric device 1. When the battery 2 is used as a driving power source, the battery 2 can be arranged at the bottom, head or tail of the electric 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.

[0078] Please refer to Figure 2 , Figure 2 The schematic diagram of the exploded structure of the battery 2 according to some embodiments of the present application is as follows. The battery 2 comprises a housing 21 , a battery cell 22 and a thermal management component 23 , wherein the battery cell 22 and the thermal management component 23 are accommodated in the housing 21 .

[0079] Among them, the box body 21 can be used to provide a storage space for the battery cell 22 and other components, and the box body 21 can adopt a variety of structures. In some embodiments, the box body 21 may include a first part 211 and a second part 212, and the first part 211 and the second part 212 cover each other, and the first part 211 and the second part 212 jointly define a storage space. Optionally, the first part 211 and the second part 212 can be hollow structures with one side open, and the open side of the first part 211 covers the open side of the second part 212. Optionally, the second part 212 can also be a hollow structure with one end open, and the first part 211 can be a plate-like structure, and the first part 211 covers the open side of the second part 212. The box body 21 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0080] There can be multiple battery cells 22, and multiple battery cells 22 can be connected in series, in parallel, or in series and parallel in the box 21 to form a battery 2 with a certain capacity and voltage. Multiple battery cells 22 can be directly connected in series, in parallel, or in series and parallel, and then the whole formed by multiple battery cells 22 is accommodated in the box 21.

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

[0082] The present application embodiment discloses a current collector 24, see 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 respectively a water inlet space and a water outlet space. Among them, the outer plate 2411 and the inner partition plate 2412 are integrally formed.

[0083] The current collector 24 can be a structural component used to gather fluid in the thermal management component 23, and is a component that introduces or leads the external fluid medium into the heat exchange pipe of the thermal management component 23. The current collector 24 can gather the external fluid and input it into the thermal management component 23, or it can uniformly output the fluid in the thermal management component 23 to the outside after heat exchange through each fluid pipe. The current collector 24 can be a regular three-dimensional shape such as a cuboid or a cube, or it can be an irregular three-dimensional shape. The current collector 24 can be a material that is not easy to absorb water, such as plastic and metal.

[0084] The current collector body 241 may be a component in the current collector 24 that gathers the fluid. In the embodiment of the present application, the current collector body 241 is formed by integral molding. After molding, the current collector body 241 may be a structure with openings at both ends, and may cooperate with other components to seal the openings. The interior of the current collector body 241 includes a partition structure that separates the fluid, which is used to form at least two spatial structures that gather the in / out fluid. The current collector 24 needs to be connected to the external pipeline fluid, and also needs to be connected to the fluid pipeline fluid in the thermal management component 23. Then, a number of holes for the fluid to enter and exit are provided on the current collector body 241 or the current collector 24, which are used to connect with other structures to construct a channel for fluid circulation. The current collector body 241 may be a material that is not easy to absorb water, such as plastic, metal, etc.

[0085] The current collector body 241 includes an external plate 2411 and an internal partition plate 2412. The external plate 2411 forms the overall outline of the outside of the current collector body 241 and encloses the entire space for converging fluids. The internal partition plate 2412 is arranged in the space enclosed by the external plate 2411 to divide the space into various required fluid spaces to facilitate the circulation and heat exchange of the fluid. The external plate 2411 and the internal partition plate 2412 can be flat plates with uniform thickness for easy processing. The external plate 2411 and the internal partition plate 2412 can be made of metal, plastic or other materials. The materials of the two can be the same, which is convenient for processing and manufacturing together, and also convenient for one-piece molding.

[0086] The first space 2413 and the second space 2414 are at least two spatial regions contained in the current collector body 241. The first space 2413 and the second space 2414 are two spaces separated by the internal partition plate 2412 enclosing the external plate 2411. The first space 2413 and the second space 2414 are not connected to each other in the current collector 24. Optionally, the first space 2413 can be a water inlet space, a space for gathering external fluid. The second space 2414 can be a water outlet space, a space for outputting 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. In the embodiment of the present application, the first space 2413 is taken as the water inlet space as an example, the second space 2414 can be a space enclosed by the inner side of the internal partition plate 2412 and the external plate 2411, and the first space 2413 can be a space enclosed by the outer side of the internal partition plate 2412 and the external plate 2411. The shapes and volumes of the first space 2413 and the second space 2414 can be basically the same to balance the pressure of the inlet and outlet water; they can also be set to be different depending on the needs of heat exchange, that is, by controlling the shapes and sizes of the two spaces, the fluid reaches a predetermined flow rate and pressure, etc.

[0087] The outer plate 2411 and the inner partition plate 2412 are integrally formed so that the two parts form a whole, and can be directly integrally formed during production, thereby reducing the number of assembled parts and processes and improving sealing performance. The integral molding can be manufactured by an integral injection molding process, or by a CNC machine tool, such as a stamping, extrusion process, etc. The outer plate 2411 and the inner partition plate 2412 are integrally formed so that they can be an integral structure without additional connection structures such as welding points, rotating shafts and fixing devices, and have excellent sealing performance in parts suitable for fluid pipelines and the like that require separation of spaces.

[0088] By integrally forming the outer plate 2411 and the inner partition plate 2412 of the current collector body 241, the outer plate 2411 and the inner partition plate 2412 can be manufactured 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, the one-piece molding process reduces the number of parts and process steps of the current collector body 241, reduces the processing difficulty, effectively reduces the manufacturing cost and improves the production efficiency of the current collector body 241, thereby improving the production efficiency of the current collector 24, the thermal management component 23 and even the battery 2.

[0089] In some embodiments, Figure 4.1 As shown, the internal partition plate 2412 is in a material continuous state in the first direction X.

[0090] The first direction can be Figure 4.1 The first direction X may be the direction in which the current collector body 241 extends during the integral molding process.

[0091] Material continuity may refer to that the material of the internal partition plate 2412 in the first direction X is continuous and identical, in an extended state without holes, and also in a discontinuous state that is not formed by splicing and welding multiple plates. The internal partition plate 2412 is set to a relatively fixed shape and position with the external plate 2411, and the shape and relative position of the external plate 2411 and the internal partition plate 2412 are basically not changed along the first direction X during the one-piece molding process. After the molding is completed, the functional space required by the current collector 24 formed by the external plate 2411 and the internal partition plate 2412 is obtained.

[0092] By arranging the internal partition plate 2412 to present a continuous material state in the first direction X, manufacturing parts with continuous material makes processing easier, mold design simpler, and processing equipment simpler.

[0093] In some embodiments, Figure 4.1 As shown, any cross-sectional shape of the internal partition plate 2412 in a direction perpendicular to the first direction X is the same.

[0094] Any cross section of the internal partition plate 2412 perpendicular to the first direction X may be a cross section obtained by cutting the internal partition plate 2412 in a direction perpendicular to the first direction X. Any cross section of the internal partition plate 2412 obtained in this way has the same shape.

[0095] By designing the internal partition plate 2412 to have the same shape in any cross section perpendicular to the first direction X, a collection of multiple current collector bodies 241 can be formed in one molding, and then cut to form a single current collector body 241, which can conveniently realize batch production of the current collector body 241.

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

[0097] like Figure 4.1 As shown, the U-shaped internal partition plate 2412 is connected to the external plate 2411 at the two ends of the "U" opening to enclose the water inlet space or the water outlet space of the current collector 24. The internal partition plate 2412 of the U-shaped structure has a moderate bending angle, a smooth transition of the corner, and no sharp or abrupt angles. When integrally formed, the material can be extended and flowed more smoothly, and it is not easy to break and produce burrs. The formed fluid space can also have a small resistance to the flow of the fluid.

[0098] like Figure 4.2As shown, the V-shaped internal partition plate 2412 is connected to the external plate 2411 at the two ends of the "V" opening to enclose the water inlet space or the water outlet space of the current collector 24. The internal partition plate 2412 of the V-shaped structure design includes only two planes. For example, when the lengths of the three plates forming the U-shape are all a, to enclose an area a2, an internal partition plate 2412 of length 3a is required, while the V-shape only needs two plates of √2a to enclose the same area. This situation makes the V-shaped design use less materials, which is conducive to reducing costs.

[0099] Optionally, the cross-sectional shape of the internal partition plate 2412 that separates the water inlet space and the water outlet space may be a combination of U-shaped or V-shaped shapes depending on actual product requirements.

[0100] In some embodiments, Figure 4.1 As shown, the one-piece molding method includes extrusion molding.

[0101] Extrusion molding is also called extrusion molding. Extrusion molding can refer to a molding method that uses the extrusion effect of external force to make the heat-deformed material pass through the mold under the pressure to form a continuous profile with a constant cross-section. The extrusion molding process mainly includes processes such as feeding, heating and deformation, extrusion molding, shaping and cooling. Extrusion molding can be applied to metals such as aluminum and materials with good ductility such as plastics. The cross-sectional shape of the extruded product along the extrusion direction is the same, and the product is a continuous material along the extrusion direction. Other processing techniques can be performed on the main structure after extrusion molding, such as punching, milling, etc., to form a specific product structure.

[0102] The current collector body 241 is manufactured by the extrusion molding process, so that the current collector body 241 is produced continuously and in batches, and the production efficiency of the current collector body 241 is higher. Moreover, the equipment used for extrusion molding is simpler than other integrated molding equipment, and the production cost of this process is lower.

[0103] In some embodiments, Figure 3 As shown, the current collector 24 further includes a first through hole 2421 for introducing a fluid into the current collector 24 or leading a 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 sealed and connected to 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 to an external device or pipeline, so that the fluid can flow from the external device or pipeline into the current collector 24 or flow out from the current collector 24 to the external pipeline or device. The setting position of the first through hole 2421 is connected to 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 first through hole 2421 may include at least two, wherein at least one first through hole 2421 is used to introduce fluid into the current collector 24, and at least one first through hole 2421 is used to lead fluid out of the current collector 24. The shape of the first through hole 2421 can be a regular shape such as a circle, square or rectangle, or it can be set to an irregular shape such as an incomplete circle. The irregular shape can be used as a fool-proof design to quickly identify the position of the board, which is convenient for quick positioning and installation.

[0105] The first cover plate 242 and the second cover plate 243 are respectively covered at both ends of the current collector body 241, and are sealed and connected at the positions of the openings at both ends of the current collector body 241. Due to its one-piece manufacturing process, the current collector body 241 has a structure including openings at both ends, while the current collector 24 is a sealed structure except for the preset through holes for fluid to enter and exit. Due to the openings formed by the processing technology, the first cover plate 242 and the second cover plate 243 are required to be sealed. The first cover plate 242 and the second cover plate 243 can be made of metal materials such as aluminum and copper, or they 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 body 241. The same materials are easier to connect and the connection strength is higher.

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

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

[0108] In some embodiments, Figure 4.3 , Figure 4.4 , Figure 5 As shown, one or more second through holes 2415 are arranged on the plate enclosing the first space 2413, and one or more third through holes 2416 are arranged on the plate enclosing the second space 2414. The second through holes 2415 and the third through holes 2416 are used for fluid inlets and outlets connecting 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 are the same.

[0109] The thermal management component 25 may be a component that is disposed in the battery 2 to manage the temperature of the battery cell 22. The thermal management component 25 may be in direct contact with the battery cell 22 for heat exchange; it may also be in contact with the housing 21 for heat exchange, and then in contact with the battery cell 22 through the housing 21 for heat exchange, thereby achieving heat exchange between the thermal management component 25 and the battery cell 22. The thermal management component 25 is a part of the thermal management assembly 23, and the thermal management component 25 may include a multi-pipe structure that utilizes a liquid medium or a gas medium for heat exchange. The thermal management component 25 may be made of a material with good thermal conductivity, such as metal, non-metal or alloy. The shape of the thermal management component 25 may be designed according to the spatial location where it is placed, and may be a shape similar to an elongated pipe or a rectangular parallelepiped that is suitable for sufficient heat exchange.

[0110] The second through hole 2415 and the third through hole 2416 can be holes arranged on the current collector 24, which are connected to the thermal management component 25, so that the fluid can flow from the current collector 24 into the thermal management component 25 or flow out from 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 that are connected to 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 shapes such as circles, squares or rectangles, or irregular shapes such as incomplete circles and quasi-circles. The second through hole 2415 and the third through hole 2416 can have the same shape to facilitate processing and manufacturing. Optionally, the second through hole 2415 and the third through hole 2416 can be arranged on the same plate to facilitate one-time processing and improve the space utilization of the current collector 24 in the battery 2. Optionally, as Figure 4.3 As shown, the second through hole 2415 and the third through hole 2416 can be set on different plates to meet the personalized needs of fluid flow in and out.

[0111] Because the number of the second through holes 2415 and the third through holes 2416 is the same, the water inlet and outlet paths from the current collector 24 to the thermal management component 25 correspond one to one, so that the fluid inside the thermal management component 25 flows evenly, and the heat exchange of the thermal management component 25 to the battery cell 22 is more balanced.

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

[0113] Optional, such as Figure 4.1As shown, the second through hole 2415 and the third through hole 2416 can be arranged on the same plate of the external plate 2411, which is convenient for connecting with the thermal management component 25 to form a fluid flow channel between the collector 24 and the thermal management component 25, and also convenient for the processing and manufacturing of the second through hole 2415 and the third through hole 2416.

[0114] Optional, such as Figure 4.3 As shown, the second through hole 2415 and the third through hole 2416 can be set on different plates of the external plate 2411 to meet the flow channel design requirements of different needs.

[0115] Optionally, one first through hole 2421 may be provided on each of the two cover plates, so that external pipes connected to the first through holes 2421 do not occupy each other's space on one side and are distributed more evenly.

[0116] Optionally, two first through holes 2421 may be disposed on the same cover plate, so that external pipelines connected to the first through holes 2421 are distributed on one side, resulting in higher space utilization.

[0117] The water pipeline connected to the first through hole 2421 and the thermal management component 25 connected to the second through hole 2415 and the third through hole 2416 both need to occupy a certain space and are arranged on different plates of the current collector 24 so that they are distributed on different sides and will not interfere with each other while being reasonably densely packed, thereby improving the space utilization of the current collector 24 and the thermal management component 23 in the battery 2.

[0118] In some embodiments, Figure 6 As shown, the outer plate 2411 is provided with reinforcing ribs 2417 facing the first space 2413 and / or the second space 2414 .

[0119] The reinforcing rib 2417 may be a component provided on the external plate 2411 for reinforcing the connection strength between the current collector body 241 and the cover plate. The reinforcing rib 2417 may be fixed to the external plate 2411 by welding or the like, or may be formed in an integral manner with the current collector body 241 by designing a suitable mold. The reinforcing rib 2417 is provided inside the current collector body 241, and its length, height, and thickness are designed with the main consideration of not affecting the flow of the fluid in the current collector 24 space. For example, the reinforcing rib 2417 is provided in a form substantially parallel to the internal partition plate 2412, and is provided on the external plate 2411 opposite to the second through hole 2415 and the third through hole 2416, or may be provided on two side plates opposite to the external plate 2411 at the same time. Optionally, the height of the reinforcing rib 2417 does not exceed half the height of the current collector body 241. The reinforcing rib 2417 may be made of metal such as aluminum and copper, or may be made of a plastic material. When the material of the reinforcing rib 2417 is set to be the same as that of the current collector body 241, welding processing is facilitated and the connection strength between the two is improved. The reinforcing rib 2417 can be set in the first space 2413, or in the second space 2414, or in both the first space 2413 and the second space 2414. The reinforcing rib 2417 can be set symmetrically in two or an even number on the outer plate 2411, or can be set asymmetrically in one or more.

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

[0121] This embodiment discloses a method for manufacturing a current collector 24, such as Figure 3 , 7 As shown, 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 respectively a water inlet space and a water outlet space. Among them, the outer plate 2411 and the inner partition plate 2412 are integrally formed. The current collector body 241 is formed by integral molding.

[0122] The current collector body 241 is processed by an integral molding method, and structures such as the outer plate 2411 , the inner partition plate 2412 , the first space 2413 , and the second space 2414 of the current collector body 241 can be processed at one time.

[0123] The current collector body 241 is manufactured by an integrated molding method, and many parts such as the original external plate 2411 and the internal partition plate 2412 are combined into one part, thereby improving the production efficiency of the current collector body 241. The number of parts of the current collector 24 is effectively reduced, the manufacturing process steps of the current collector 24 are simplified, the production time and production cost are reduced, and the production efficiency of the current collector 24 is improved.

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

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

[0126] The cavity 2441 may refer to a structure with an outer shell and a hollow interior. The cavity 2441 is a structure after the profile is extruded through a mold. The shape of the cavity 2441 is determined by 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 body 241, and the two cavities 2441 and the first space 2413 and the second space 2414 have the same cross-section on a plane perpendicular to the first direction X. After the two cavities 2441 are processed, the first space 2413 and the second space 2414 can be obtained.

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

[0128] The specific profile structure 244 is manufactured by an 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 body 241, which helps to process the profile structure 244 to quickly obtain the current collector body 241. In addition, the mold and processing equipment used in this process are simple, which helps to achieve continuous production, and a large number of identical profile structures 244 can be produced in batches, thereby improving the production efficiency of the current collector body 241, thereby improving the overall production efficiency of the current collector 24.

[0129] In some embodiments, Figure 7As 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 a single current collector body 241 .

[0130] Cutting can include thermal cutting, erosive cutting and mechanical cutting. Thermal cutting uses heat to cut or melt through the material to be cut, such as flame cutting, plasma cutting and laser cutting. Erosive cutting uses air, water or other natural forces to abrade materials, such as water jet cutting. Mechanical cutting uses physical force to cut objects, such as sawing, shearing, etc.

[0131] The profile structure 244 of the current collector body 241 formed in an integrally formed manner may include a plurality of current collector bodies 241. The profile structure 244 may be cut according to a certain width dimension to quickly obtain a plurality of current collector bodies 241. Compared with the current collector body 241 assembled from a plurality of parts, directly cutting the profile structure 244 may greatly simplify the process flow, obtain products with stable performance in batches, and improve production efficiency.

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

[0133] The sealed connection may refer to a space formed by connecting the cover plate and the current collector body 241, so that the fluid inside the current collector 24 does not leak out. The sealed connection includes welding, plug-in, bonding and other connection methods.

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

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

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

[0137] Before cutting the profile structure 244, the second through hole 2415 and the third through hole 2416 can be punched on the external plate 2411, and then the profile of appropriate width can be cut to obtain the current collector body 241. This processing sequence has high punching efficiency. After cutting the profile structure 244 to obtain the current collector body 241, the second through hole 2415 and the third through hole 2416 can be punched on the external plate 2411. This processing efficiency can be achieved by performing different punching operations on each current collector body 241 according to needs.

[0138] By setting a relatively free punching process sequence, the first through hole 2421 can be punched before or after the cover plate is installed on the current collector body 241, and the second through hole 2415 and the third through hole 2416 can be punched before or after the profile structure 244 is cut. In production and processing, the holes can be punched first or later according to specific needs, which is convenient for production and processing.

[0139] In some embodiments, 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 current collector body 241 , a reinforcing rib 2417 is welded on the outer plate 2411 of the current collector body 241 , and the reinforcing rib 2417 faces the first space 2413 and / or the second space 2414 .

[0140] Welding, also known as welding, can be 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 flame, arc, laser, electron beam, friction and ultrasonic. Metal welding can include fusion welding, pressure welding and brazing.

[0141] Before the cover plate is installed on the current collector body 241, the reinforcing rib 2417 is welded inside the outer plate 2411 of the current collector body 241, and the reinforcing rib 2417 is located in the first space 2413 or the second space 2414. When the cover plate is welded to 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 reinforcing rib 2417, and the welding area becomes 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 component 23, such as Figure 5 As shown, it includes a current collector 24 and a heat management component 25. The water inlet of the heat management component 25 is communicated with the first space 2413, and the water outlet of the heat management component 25 is communicated with the second space 2414.

[0143] The thermal management component 23 may be a component for regulating the temperature of the battery 2, including cooling the battery 2 or heating it. The thermal management component 23 is a part of the battery 2. The thermal management component 23 includes a current collector 24 and a thermal management component 25. The thermal management component 23 may include a water cooling plate, an air cooling plate, a water cooling pipe or an air cooling pipe. Optionally, Figure 2 As shown, the thermal management component 23 can be disposed at the bottom of the housing 21 , and perform heat exchange with the battery cells 22 through indirect contact with the housing 21 .

[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 into the thermal management component 25 through the water inlet of the thermal management component 25, and then flows from the inside of the thermal management component 25 through its water outlet into the second space 2414.

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

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

[0147] The present application provides an electrical device 1, such as Figure 1 As shown, the battery 2 is included, and the battery 2 is used to provide power to the electric device 1. The electric device 1 can be a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Because the use of the battery 2 in this application helps to improve the thermal management capability of the battery 2 and thus improve the overall performance of the battery 2, thereby improving the service life and performance of the electric device 1.

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

[0149] The current collector body 241 is manufactured 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 processing difficulty and manufacturing costs, and improves the production efficiency of the current collector 24 and even the thermal management component 23.

[0150] According to some embodiments of the present application, Figure 3 , 6As shown in Figures 7 and 8, the present application provides a method for manufacturing a current collector 24. A current collector body 241 including an external plate 2411 and an internal partition plate 2412 is formed into a profile structure 244 by an integral molding method of extrusion molding, and the profile structure 244 is cut to obtain a single current collector body 241. A reinforcing rib 2417 is welded on the external plate 2411 of the current collector body 241, and a first cover plate 242 and a second cover plate 243 are respectively sealed and connected to the two ends of the current collector body 241 to form a sealing structure of a single current collector 24.

[0151] The manufacturing method of the current collector 24 includes an extrusion-type one-piece molding process, which can quickly produce a batch of structural parts of the current collector body 241 with stable structural performance, thereby reducing the number of processed parts and components of the entire current collector body 241, reducing the number of assembly process steps, and reducing the process difficulty, thereby improving the production efficiency of the current collector 24 and the production efficiency of the thermal management component 23.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application 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 by equivalents; 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 present application, and they should all be included in the scope of the claims and specification of the present application. 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 application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

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

2. The current collector according to claim 1, wherein: The inner partition plate is in a material-continuous state in a first direction.

3. The current collector according to claim 2, wherein: Any cross-sectional shapes of the internal partition plates in a direction perpendicular to the first direction are the same.

4. The current collector according to any one of claims 2 to 3, wherein: The cross-sectional shape of the internal partition plate perpendicular to the first direction is U-shaped; and / or The cross-sectional shape of the internal partition plate in a direction perpendicular to the first direction is V-shaped.

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

6. The current collector according to any one of claims 1 to 5, wherein: The current collector also includes a first through hole for introducing fluid into the current collector or allowing fluid to flow out of the current collector. The current collector includes a first cover plate and a second cover plate, wherein the first cover plate and the second cover plate are respectively sealed and connected to both ends of the opening of the external plate, and 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 any one of claims 1 to 6, wherein: One or more second through holes are arranged on the plate enclosing the first space, and one or more third through holes are arranged on the plate enclosing the second space. The second through holes and the third through holes are used for fluid inlets and outlets connecting the current collector and the thermal management component, and the number of the second through holes and the third through holes is 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 a plate of the current collector different from the first through hole.

9. The current collector according to any one of claims 1 to 8, wherein: The outer plate 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 to 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, and the cavity is used to form the first space and the second space.

12. The method according to claim 11, wherein: The 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.

13. The method according to any one of claims 10 to 12, wherein: 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 structure of 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 current collector body, the first cover plate and / or the second cover plate are punched to obtain a first through hole; and / or, Before or after cutting the profile structure, punching is performed simultaneously or separately on the outer plate to obtain the second through hole and the 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 mounted on the current collector body, the reinforcing ribs are welded on the outer plate of the current 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 according to any one of claims 1 to 9; and A heat management component, wherein a water inlet of the heat management component is communicated with the first space, and a water outlet of the heat management component is communicated with the second space.

17. A battery, characterized in that: include: The thermal management assembly of claim 16; as well as A plurality of battery cells are provided, and the thermal management component regulates the temperature of the plurality of battery cells.

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

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