Power collector, heat management assembly, battery and electrical device

Abstract

A current collector for a thermal management assembly of a battery, comprising: a housing having a manifold cavity, wherein the manifold cavity serves to be connected to several heat exchange channels of the thermal management assembly; and a separating segment arranged in the manifold cavity, wherein the manifold cavity comprises several depressions and the separating segment separates the several depressions from each other, each of the depressions being connected to at least one of the heat exchange channels.

Description

TECHNICAL AREA

[0001] The present application relates to the field of battery technology and specifically relates to a current collector, a thermal management assembly, a battery and an electrical device. STATE OF THE ART

[0002] Battery cells are widely used in electronic devices, such as mobile phones, laptops, electric bicycles, electric vehicles, electric aircraft, electric ships, electric toy cars, electric toy ships, electric toy airplanes and power tools, etc.

[0003] In the development of battery technology, reducing the risk of thermal runaway in batteries is a research direction. CONTENT OF THE INVENTION

[0004] The present application provides a current collector, a thermal management assembly, a battery and an electrical device which can reduce the thermal runaway risk of the battery.

[0005] First, an embodiment of the present application provides a current collector for a battery thermal management assembly, comprising a housing and a separating segment. The housing has a collective current cavity for connection to several heat exchange channels of the thermal management assembly. The separating segment is arranged in the collective current cavity. The collective current cavity comprises several recesses, the separating segment separating the several recesses from one another. Each recess is designed to be connected to at least one heat exchange channel.

[0006] By arranging the separating segment on the casing, the current collector cavity is divided into several recesses. Multiple heat exchange channels are connected in series across these recesses. This can improve the phenomenon of uneven heating of the battery cell caused by a single cavity in the current collector, increase the heat exchange effect of the battery cell, and reduce the risk of thermal runaway.

[0007] In some embodiments, the housing and the separating segment are formed as a single, one-piece component.

[0008] The one-piece design not only significantly increases structural strength at the joint, but also considerably improves the seal between the separating segment and the housing at the connection point. This reduces the risk of flow mixing between adjacent recesses, mitigates temperature rises or falls due to the mixing of heat exchange fluid, improves the heat exchange effect of the battery cell, and reduces the risk of thermal runaway in the battery.

[0009] In some embodiments, the manifold cavity includes a receiving recess that is sunk from a side of the housing facing the heat exchange channel. The multiple recesses are sunk from a bottom surface of the receiving recess in a direction away from the receiving recess.

[0010] The base of the receiving recess can provide positioning for the component with the heat exchange channels and facilitate assembly. The side surface of the receiving recess can increase the contact area with the component containing the heat exchange channels, thus improving the reliability of the connection.

[0011] In some embodiments, the bottom surface of the receiving recess comprises an annular section located on the outer circumferential side of the recess.

[0012] The arrangement of the ring-shaped section on the outer circumferential side of the recess can further increase the effective area with the component connected to the recess, thus facilitating the positioning and assembly of this component.

[0013] In some embodiments, the multiple recesses comprise a first recess and a second recess. The current collector includes a first terminal connected to the housing. The current collector has a first channel connecting the first terminal and the first recess.

[0014] Connecting the first terminal and the first recess via the first channel offers the advantage, compared to a direct connection between the first terminal and the first recess, that the shape of the first terminal does not need to be excessively designed. It is sufficient to provide the first channel on the housing for connecting both, which simplifies the arrangement of the first terminal and the first recess.

[0015] In some embodiments, the housing and the first connection are formed in one piece.

[0016] Manufacturing the housing and first connection in one piece significantly increases the structural strength at their joint, thus improving the long-term durability of the current collector. Furthermore, this one-piece design ensures extremely high sealing at the connection point between the housing and the first connection, reduces the volume of escaping heat exchange fluid, and therefore increases the heat exchange effect and reduces the risk of thermal runaway in the battery.

[0017] In some embodiments, the current collector further comprises a second terminal. The first terminal and the second terminal are each located on opposite sides of the housing, with the second terminal being connected to the first terminal.

[0018] The second connection serves to divert the heat exchange fluid from the first connection to an adjacent current collector, thus enabling the circulation of the heat exchange fluid in several current collectors and thereby subjecting several battery cells to heat exchange.

[0019] In some embodiments, the housing has a positioning section that interacts with an external reference element.

[0020] By arranging the positioning section on the housing, which interacts with the external reference element, the current collector can be positioned and even fixed, which facilitates the assembly of multiple current collectors together.

[0021] Secondly, an embodiment of the present application provides a thermal management assembly comprising a heat exchanger plate and the current collector according to any embodiment of the first aspect. The heat exchanger plate has several heat exchange channels. The housing is connected to an end region of the heat exchanger plate and closes the several heat exchange channels. Each recess is connected to at least one heat exchange channel.

[0022] In some embodiments, the heat exchange plate comprises a main plate body and several partition elements arranged within the main plate body. These partition elements serve to divide the main plate body into multiple heat exchange channels.

[0023] The division of the main plate body into multiple heat exchange channels by the several separating elements ensures that the multiple heat exchange channels are independent of each other. This reduces the risk of heat exchange fluid mixing in adjacent channels, thus improving the heat exchange effect and reducing the risk of thermal runaway in the battery.

[0024] In some embodiments, the thermal management assembly further comprises a protective plate arranged between the heat exchange plate and the current collector. The protective plate serves to separate a portion of the heat exchange channels from the collecting current cavity.

[0025] The protective plate separates some of the heat exchange channels from the manifold cavity; that is, the manifold cavity is not connected to all of the heat exchange channels opposite it, but only to some of them. For the heat exchange plate, this means that no heat exchange fluid circulates in some of its channels. In this way, while still meeting the heat exchange requirements, the volume of heat exchange fluid can be reduced, and consequently, the battery's weight can be decreased.

[0026] In some embodiments, the protective plate is formed integrally with the current collector; and / or the protective plate is formed integrally with the heat exchanger plate. The integral formation of the protective plate with at least one of the two components (current collector or heat exchanger plate) can simplify subsequent processing steps, and the integrally formed parts exhibit good sealing.

[0027] In some embodiments, the manifold cavity includes a receiving recess that is sunk from one side of the housing facing the heat exchanger plate. The multiple recesses extend from a bottom surface of the receiving recess in a direction away from the receiving recess. The protective plate is connected to the bottom surface of the receiving recess.

[0028] Connecting the protective plate to the base of the recess increases the contact area between the protective plate and the current collector. The recess provides a positioning effect for the protective plate, facilitates installation, and the housing can offer protection for the protective plate.

[0029] In some embodiments, the protective plate has several recesses. The recess is connected to the heat exchange channel via the corresponding recess.

[0030] The use of recesses to connect the recess and heat exchange channel has the advantage over sealing with several separate sealing plates that a single protective plate can replace several sealing plates, which simplifies assembly.

[0031] In some embodiments, the number of protective plates is two. The two protective plates are arranged at both ends of the heat exchange channels. The recesses of the two protective plates correspond to each other in the orientation of the two plates.

[0032] The arrangement of two protective plates to seal both ends of the heat exchange channels ensures, compared to a single-sided seal, that the heat exchange fluid remains in constant circulation. This improves the problem of fluid stagnation in channels with a single-sided seal, thus increasing the heat exchange effect and reducing the risk of thermal runaway in the battery.

[0033] In some embodiments, the protective plate has a first surface and a second surface that face each other. The first surface faces the heat exchange plate. The protective plate includes a projection extending from the first surface, which is connected to the side wall of the heat exchange channel by a plug connection.

[0034] The projection, which is plug-in connected to the side wall of the heat exchange channel, allows for a tighter connection between the projection and the heat exchange plate, facilitating both the connection and the subsequent connection to the current collector. Simultaneously, the projection exerts a positioning effect when the protective plate is mounted on the heat exchange plate.

[0035] In some embodiments, the protective plate has a recess that is sunken relative to the second surface. The recess is positioned opposite the projection.

[0036] The arrangement of the recess can reduce the weight of the protective plate and increase the energy density of the battery.

[0037] Thirdly, an embodiment of the present application provides a battery comprising a battery cell and the thermal management assembly according to any embodiment of the second aspect. The thermal management assembly serves to regulate the temperature of the battery cell.

[0038] In some embodiments, the thermal management assembly is present in multiple units. These multiple thermal management assemblies are arranged sequentially, with a battery cell positioned between adjacent thermal management assemblies. This allows both sides of a thermal management assembly to exchange heat with a battery cell, resulting in high heat exchange efficiency and reducing the risk of thermal runaway in the battery.

[0039] In some embodiments, the battery also includes a connecting tube that serves to connect adjacent thermal management assemblies.

[0040] By connecting adjacent thermal management assemblies using a connecting tube, the distance between adjacent assemblies can be adjusted by changing the length of the connecting tube, in order to adapt to battery cells of different sizes and increase the application flexibility of the thermal management assembly.

[0041] Fourthly, an embodiment of the present application provides an electrical device comprising the battery according to any embodiment of the third aspect. The battery serves to provide electrical energy. FIGURES

[0042] To clarify the technical solutions of the embodiments of the present application, the figures required in these embodiments are briefly presented below. It is understood that the figures described below represent only some embodiments of the present application. A person skilled in the art can derive further figures from these without any creative effort. Fig. Figure 1 is a schematic representation of the structure of a vehicle according to some embodiments of the present application; Fig. 2 is an exploded view of a battery according to some embodiments of the present application; Fig. Figure 3 is a schematic representation of the structure of a thermal management assembly and a battery cell according to further embodiments of the present application; Fig. Figure 4 is a schematic representation of the structure of a current collector according to some embodiments of the present application; Fig. 5 is a main view of the in Fig. 4 shown current collector; Fig. 6 is a cross-sectional image of the in Fig. 5 shown current collector along line AA; Fig. Figure 7 is a schematic representation of the structure of a current collector according to further embodiments of the present application; Fig. Figure 8 is a schematic representation of the structure of a current collector according to further embodiments of the present application; Fig. Figure 9 is a schematic representation of the structure of a thermal management assembly according to some embodiments of the present application; Fig. 10 is a schematic representation of the structure of a heat exchanger plate of the heat management assembly according to some embodiments of the present application; Fig. Figure 11 is an enlarged representation of area B in Fig. 10; Fig. Figure 12 is a schematic representation of the flow path of the heat exchange fluid in the heat management assembly according to some embodiments of the present application; Fig. Figure 13 is an exploded view of the structure of a thermal management assembly according to some embodiments of the present application; Fig. Figure 14 is a schematic representation of the structure of a protective plate of the thermal management assembly according to some embodiments of the present application. Key to symbols used in the examples: 1 vehicle; 2 batteries; 3 controllers; 4 Motor; 5 battery cells; 6 boxes; 61 first part of the box; 62 second part of the box; 63 Recording room; 7 Thermal management assembly; 71 Heat exchanger plate; 711 Heat exchange channel; 712 Plate body; 713 Separating element; 714 first side plate; 715 second side plate; 72 Protective plate; 721 recess; 723 first surface; 724 second surface; 725 lead; 726 Exclusion; 73 Power collector; 74 cases; 741 Collector cavity; 742 In-depth study; 743 Intake depression; 744 ring-shaped section; 745 first indentation; 746 second depression; 747 first channel; 748 Positioning pass; 749 Positioning recess; 740 square meters of floor space; 731 Main body section; 732 Hollow body section; 75 Separation segment; 76 first connection; 77 second connection; 8 connecting pipes. EXAMPLES OF EXECUTION

[0043] To more clearly illustrate the objectives, technical solutions, and advantages of the embodiments of this application, the technical solutions in these embodiments are described below with reference to the figures in the embodiments of this application. It is evident that the described embodiments represent a subset of the embodiments of this application and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art in this field without any inventive activity fall within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as generally understood by those skilled in the technical field of this application; the terms used in the description of this application serve only to describe certain embodiments and are not intended to limit the scope of this application; the terms "comprise" and "include" and any variations thereof in the description and claims of this application and in the drawing description above are intended to cover non-exclusive inclusion. The terms "first", "second", etc., in the description and claims of this application or in the figures above serve to distinguish different objects and not to describe a particular sequence or relationship between principal and subsidiary elements.

[0045] The mention of the "exemplar embodiment" in the present application means that the specific features, structures, or properties described in connection with the exemplary embodiment may be included in at least one exemplary embodiment of the present application. The appearance of this phrase at various points in the description does not necessarily always refer to the same exemplary embodiment, nor does it constitute an independent or mutually exclusive alternative exemplary embodiment.

[0046] In the description of this application, it should be noted that the terms "install," "connected," "connect," and "attach" are to be understood in a comprehensive manner unless expressly specified or defined otherwise. For example, they may refer to a permanent connection, a detachable connection, or a one-piece connection; they may be directly connected to one another or indirectly connected via an intermediate medium; they may represent the internal connection of two elements. For a person skilled in the art, the specific meanings of the aforementioned terms in this application can be understood according to the specific situation.

[0047] The term “and / or” in the present application merely describes an associative relationship between related objects and means that three relationships can exist; for example, A and / or B can mean: the sole presence of A, the simultaneous presence of A and B, or the sole presence of B. Furthermore, the symbol “ / ” in the present application generally means that the related objects preceding and following it are in an “or” relationship to each other.

[0048] In the embodiments of the present application, identical symbols denote identical components, and for the sake of simplicity, the detailed description of identical components is omitted in various embodiments. It should be understood that the dimensions shown in the figures, such as thickness, length, width, etc., of the various components in the embodiments of the present application, as well as the overall dimensions, such as thickness, length, width, etc., of the integrated device, are only exemplary and are not intended to limit the present application.

[0049] The term “several” appearing in the present application refers to two or more (including two).

[0050] In the present application, the battery cell can comprise a lithium-ion secondary cell, a lithium-ion primary cell, a lithium-sulfur cell, a sodium-lithium-ion cell, a sodium-ion cell, or a magnesium-ion cell, etc., which is not limited by the embodiment of the present application. The battery cell can be cylindrical, flat, cuboid, or other shapes, which is also not limited by the embodiment of the present application.

[0051] The battery mentioned in the embodiments of the present application refers to a single physical module comprising one or more battery cells to provide a higher voltage and capacity. For example, the battery mentioned in the present application may comprise a battery module or a battery pack, etc. The battery generally includes a housing for enclosing one or more battery cells. The housing may prevent liquids or other foreign matter from affecting the charging or discharging of the battery cell.

[0052] The battery cell comprises an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. The function of the battery cell is primarily based on the movement of metal ions between the positive and negative electrode plates. The positive electrode plate includes a positive collector and a positive active material layer. The positive active material layer is applied to the surface of the positive collector; the positive collector includes a positive coating area and a positive terminal tab connected to this coating area. The positive coating area is coated with the positive active material layer, while the positive terminal tab is not. For example, in a lithium-ion battery cell, the material of the positive collector could be aluminum.The positive active material layer comprises a positive active material, which can be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. The negative electrode plate comprises a negative current collector and a negative active material layer. The negative active material layer is applied to the surface of the negative current collector; the negative current collector comprises a negative coating area and a negative terminal associated with the negative coating area. The negative coating area is coated with the negative active material layer, while the negative terminal is not. The material of the negative current collector can be copper. The negative active material layer comprises a negative active material, which can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0053] The battery cell also includes an outer casing, inside of which is a compartment for receiving the electrode assembly. The outer casing protects the electrode assembly from external influences, preventing foreign objects from interfering with the charging or discharging of the electrode assembly.

[0054] Batteries exhibit different electrical cycle performance at varying ambient temperatures. If the ambient temperature is too high or too low, this leads to a deterioration in the battery's cycle performance and can even shorten its lifespan. To ensure the safe, stable, and optimal operation of modern energy vehicles, effective battery thermal management is essential to keep the battery operating within a suitable temperature range.

[0055] The applicant provides a thermal management assembly for the battery. This thermal management component can be used for heat exchange with the battery cells to effectively manage the battery's temperature and allow the battery cells to operate within a suitable temperature range.

[0056] The thermal management assembly comprises a heat exchanger plate and a current collector. The heat exchanger plate has several heat exchange channels. The current collector is attached to one end of the heat exchanger plate and seals the heat exchange channels. Heat exchange fluid flows through a cavity inside the current collector into the heat exchange channels to facilitate heat exchange with the battery cells and reduce the risk of thermal runaway in the battery.

[0057] The flow collector has a single cavity. The heat exchange fluid flows through this cavity simultaneously into several heat exchange channels and then reaches the other end of the heat exchange channels, from where it is discharged via another flow collector. Several heat exchange channels transport the heat exchange fluid independently of each other, which corresponds to a parallel connection.

[0058] The inventors have determined that the design with multiple parallel heat exchange channels for transporting the heat exchange fluid leads to significant temperature differences of the heat exchange fluid at both ends of the heat exchange channels, resulting in uneven heating of the battery cells and a reduced heat exchange effect. For example, when cooling battery cells with heat exchange fluid, the heat exchange fluid entering the first end of the heat exchange channels via the current collector cavity has a lower temperature. After the heat exchange fluid has flowed through the heat exchange channel to the second end, its temperature has increased, resulting in uneven heat exchange at both ends of the heat exchange channel, with the cooling effect being less effective at the second end.Here, the first and second ends are the opposite ends of the heat exchange channel.

[0059] In light of this, the present application provides a current collector for a battery thermal management assembly, comprising a housing and a separating segment. The housing has a collective current cavity that serves to be connected to several heat exchange channels of the thermal management assembly. The separating segment is arranged within the collective current cavity. The collective current cavity comprises several recesses, with the separating segment separating the several recesses from one another. Each recess serves to be connected to at least one heat exchange channel. By arranging the separating segment in the housing of the current collector, the collective current cavity of the housing is subdivided into several recesses. Each recess is connected to a heat exchange channel. In this way, several heat exchange channels can be connected in series via the recesses.Series connection enables better uniformity of heat exchange, thus improving the phenomenon of uneven heating of the battery cell, increasing the heat exchange effect of the battery cell and reducing the thermal runaway risk of the battery cell.

[0060] The battery cells described in the embodiments of the present application are suitable for batteries and for electrical devices that use battery cells.

[0061] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, aircraft and spacecraft, electric toys, and power tools, etc. Vehicles can be fuel-powered vehicles, gas-powered vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extender vehicles, etc. Aircraft and spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric toy cars, electric toy ships, and electric toy airplanes, etc.Power tools include electric metalworking tools, electric grinding tools, electric assembly tools, and electric tools for the railway sector, for example, electric drills, electric grinders, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not specifically limit the aforementioned electrical equipment.

[0062] To simplify the description, the electrical device will be assumed to be a vehicle as an example in the following.

[0063] Fig. Figure 1 is a schematic representation of the structure of a vehicle according to some embodiments of the present application.

[0064] As in Fig. As shown in Figure 1, a battery 2 is located inside vehicle 1. The battery 2 can be positioned at the bottom, at the front, or at the rear of vehicle 1. The battery 2 can supply power to vehicle 1; for example, it can serve as the operating power source for vehicle 1.

[0065] The vehicle 1 can further comprise a controller 3 and a motor 4. The controller 3 serves to control the power supply to the motor 4 from the battery 2, for example for the power requirements when starting, navigating and driving the vehicle 1.

[0066] In some embodiments of the present application, the battery 2 can serve not only as an operating current source for the vehicle 1, but also as a drive current source for the vehicle 1 and replace fuel or natural gas wholly or partially in order to supply motive power to the vehicle 1.

[0067] Battery 2 can contain one or more battery cells. If multiple battery cells are present, they can be connected in series, parallel, or a combination of both (series and parallel). A combination of series and parallel connections means that the multiple battery cells may be connected in both series and parallel configurations. The multiple battery cells can be directly connected in series, parallel, or a combination of both and then attached as a unit to a supporting structure. Alternatively, multiple battery cells can first be connected in series, parallel, or a combination of both to form a battery module, and then multiple such battery modules can be connected in series, parallel, or a combination of both to form a unit and attached to a supporting structure.

[0068] Fig. Figure 2 is an exploded view of a battery according to some embodiments of the present application.

[0069] As in Fig. As shown in Figure 2, the battery 2 comprises a box 6 and battery cells 5, which are housed in the box 6.

[0070] The box 6 serves to hold the battery cells 5 and can have various configurations. In some embodiments, the box 6 can comprise a first part of the box 61 and a second part of the box 62. The first part of the box 61 and the second part of the box 62 interlock and together define a receiving space 63 for holding the battery cells 5. The second part of the box 62 can be a hollow structure with one open side, and the first part of the box 61 can be a plate-shaped structure that covers the open side of the second part of the box 62 to form the box 6 with the receiving space 63; alternatively, both the first part of the box 61 and the second part of the box 62 can be hollow structures, each with one open side, the open side of the first part of the box 61 covering the open side of the second part of the box 62 to form the box 6 with the receiving space 63.Of course, the first part of box 61 and the second part of box 62 can have different shapes, for example cylindrical, cuboid, etc.

[0071] To increase the tightness after the connection of the first part of the box 61 with the second part of the box 62, a sealing element can be arranged between the first part of the box 61 and the second part of the box 62, for example sealant, sealing ring, etc.

[0072] Assuming that the first part of box 61 covers the top of the second part of box 62, the first part of box 61 can also be called the upper lid and the second part of box 62 the lower box.

[0073] Battery 2 can contain one or more battery cells 5. If multiple battery cells 5 are present, they can be connected in series, parallel, or a combination of both series and parallel connections. A combination of series and parallel connections means that the multiple battery cells 5 may be connected in both series and parallel configurations. The multiple battery cells 5 can be connected directly in series, parallel, or a combination of both and then housed as a unit in box 6; of course, it is also possible for multiple battery cells 5 to first be connected in series, parallel, or a combination of both to form a battery module, and for multiple such battery modules to then be connected in series, parallel, or a combination of both to form a unit and housed in box 6.

[0074] Fig. Figure 3 is a schematic representation of the structure of a thermal management assembly and a battery cell according to further embodiments of the present application.

[0075] As in Fig. As shown in Figure 3, the present application further provides a battery 2 comprising battery cells 5 and a thermal management assembly 7. The thermal management assembly 7 serves to regulate the temperature of the battery cells 5.

[0076] In some embodiments, several thermal management assemblies 7 are present. The multiple thermal management assemblies 7 are arranged one after the other, with battery cells 5 arranged between adjacent thermal management assemblies 7.

[0077] The embodiments of the present application do not restrict the number of battery cells 5 between adjacent thermal management assemblies 7; it can be one or more.

[0078] By arranging several thermal management assemblies 7 and placing battery cells 5 in the spaces between adjacent thermal management assemblies 7, heat exchange with the battery cells 5 can take place on both sides of a thermal management assembly 7, which enables a high heat exchange efficiency and reduces the thermal runaway risk of the battery 2.

[0079] Optionally, the two sides of a battery cell 5 can each be connected to two adjacent thermal management assemblies 7. In this way, heat exchange can take place on both sides of the battery cell 5, resulting in a good heat exchange effect for the battery cell 5.

[0080] In some embodiments, the battery further comprises a connecting tube 8, which serves to connect adjacent thermal management assemblies 7.

[0081] The embodiments of the present application do not restrict the structural form of the connecting pipe 8; it can be a single pipe or consist of several pipes joined together.

[0082] By connecting adjacent thermal management assemblies 7 using a connecting tube 8, the distance between adjacent thermal management assemblies 7 can be adjusted by changing the length of the connecting tube 8, in order to adapt to battery cells 5 of different sizes and to increase the application flexibility of the thermal management assembly 7.

[0083] Fig. Figure 4 is a schematic representation of the structure of a current collector according to some embodiments of the present application.

[0084] As in Fig. Figure 4 shows an embodiment of the present application providing a current collector 73 for a thermal management assembly 7 of a battery. The current collector 73 comprises a housing 74 and a separating segment 75. The housing 74 has a collective flow cavity 741, which serves to be connected to several heat exchange channels of the thermal management assembly 7. The separating segment 75 is arranged in the collective flow cavity 741. The collective flow cavity 741 comprises several recesses 742, the separating segment 75 separating the several recesses 742 from one another. Each recess 742 serves to be connected to at least one heat exchange channel.

[0085] In the embodiments of the present application, the shapes of the multiple recesses 742 can be the same or different. The dimensions of the multiple recesses 742 can be the same or different.

[0086] In the embodiments of the present application, the separating segment 75 completely separates the multiple recesses 742 from each other, so that they are independent of each other and have no connection to each other.

[0087] The number of depressions 742 in the current collector 73 can be two, three or more.

[0088] The embodiments described in the present application do not restrict the type of connection between separating segment 75 and housing 74. For example, separating segment 75 and housing 74 can be connected by welding, clipping, gluing, or other types of connection.

[0089] The embodiments of the present application do not restrict the shape of the separating segment 75; it may be plate-shaped, block-shaped or any other shape.

[0090] Optionally, the housing 74 has a connection for introducing and / or discharging heat exchange fluid. Specifically: If the housing 74 has only one connection, this connection is used to introduce heat exchange fluid into or out of the recess 742. If the housing 74 has two connections, these are connected to each other. One of the connections is used to introduce heat exchange fluid into the recess 742, and the other connection is used to introduce heat exchange fluid into the connection of an adjacent current collector.

[0091] In the embodiments of the present application, each recess 742 is connected to at least one heat exchange channel, while the multiple recesses 742 are independent of one another. This allows for the series connection of several heat exchange channels. The channel shape formed by the series connection of several heat exchange channels can be essentially U-shaped, S-shaped, M-shaped, or another shape.

[0092] In contrast to a parallel connection of several heat exchange channels, the path of the heat exchange fluid in a series connection does not run in one direction, but rather circulates at least once back and forth between the two ends of the multiple heat exchange channels. On both sides of the multiple heat exchange channels, the difference in the heat exchange effect of the heat exchange fluid on the battery cell 5 is smaller, and the heat exchange effect of the battery cell 5 is more uniform. For example: In an essentially U-shaped series connection of several heat exchange channels, the heat exchange fluid entering through the recess 742 of the current collector 73 at the first end of the heat exchange channels has a low temperature when cooling the battery cell 5. After continuous heat exchange, the fluid reaches the second end, where its temperature increases.When the heat exchange fluid returns to the first end, its temperature continues to rise. Therefore, the average temperatures of the heat exchange fluid at the first and second ends do not differ significantly, and consequently, the heat exchange effect on battery cell 5 is similar at both ends, resulting in good uniformity of heat exchange. Similarly, if the series connection is redirected multiple times, the difference in the average temperatures of the heat exchange fluid at the first and second ends remains small, and the uniformity of heat exchange for battery cell 5 continues to be good.

[0093] Therefore, the arrangement of the separating segment 75 on the housing 74, which divides the current collector cavity 741 into several recesses 742 and allows a series connection of several heat exchange channels via these recesses 742, improves the phenomenon of uneven heating of the battery cell 5 caused by a single cavity in the current collector, increases the heat exchange effect of the battery cell 5 and reduces the thermal runaway risk of the battery cell 5.

[0094] In some embodiments, the housing 74 and the separating segment 75 are a single-piece formed component.

[0095] In the embodiments of the present application, "molded in one piece" means that the housing 74 and the separating segment 75 are formed simultaneously as one piece during manufacturing, without the need for a subsequent joining step to connect one of the parts to the other. By way of example, both parts are formed simultaneously from the same material.

[0096] The inventors have found that when installing the separating segment 75 in the housing 74 using a mounting-based method, such as gluing, clipping, or similar techniques, achieving a complete seal is difficult due to gaps at the connection point between the separating segment 75 and the housing 74. Therefore, there is a risk of flow mixing between adjacent recesses 742. Mixing of the heat exchange fluid would lead to an uneven heat exchange effect and impair the heat exchange of the battery cell 5.

[0097] Therefore, the inventors chose a one-piece design for housing 74 and separating segment 75. This design not only significantly increases the structural strength at the connection point, but also considerably improves the seal between separating segment 75 and housing 74 at this point. This reduces the risk of flow mixing between adjacent recesses 742, mitigates temperature increases or decreases of the heat exchange fluid due to mixing, improves the heat exchange effect of the battery cell 5, and reduces the thermal runaway risk of the battery 2.

[0098] Fig. 5 is a main view of the in Fig. 4 shown current collector; Fig. 6 is a cross-sectional image of the in Fig. 5 shown current collector along line AA; Fig. Figure 7 is a schematic representation of the structure of a current collector according to further embodiments of the present application.

[0099] As in the Fig. As shown in Figures 5-7, in some embodiments the collecting flow cavity 741 comprises a receiving recess 743, which is recessed from a side of the housing 74 facing the heat exchange channel. The multiple recesses 742 are recessed from a bottom surface 740 of the receiving recess 743 in a direction pointing away from the receiving recess 743.

[0100] In this embodiment, “the depressions 742 are sunk from the bottom surface 740 of the receiving depression 743” means that the depressions 742 are sunk from the bottom surface 740 in the direction away from the receiving depression 743, i.e., in the current collector 73, the bottom surface 740 of the receiving depression 743 continues to exist and does not disappear through the depressions.

[0101] Optionally, the base surface 740 of the receiving recess 743 is flat.

[0102] The receiving recess 743 serves to receive the end region of the heat exchange plate with the heat exchange channels, wherein the heat exchange plate rests directly or via other components on the bottom surface 740 of the receiving recess 743 in order to establish the connection between the heat exchange channels and the recesses 742.

[0103] The base surface 740 of the receiving recess 743 can provide a positioning effect for the component with the heat exchange channels and facilitate assembly; the side surface(s) of the receiving recess can increase the contact area with the component containing the heat exchange channels, thus increasing the connection reliability. Specifically: The current collector 73 engages the heat exchange plate via the receiving recess 743 in a plug-in connection, with portions of the outer surface of the heat exchange plate bearing against the side surface of the receiving recess 743. This arrangement increases the contact area between the heat exchange plate and the housing 74, which, in subsequent welding or bonding, leads to higher connection strength due to the larger area and thus increases the connection reliability between the heat exchange plate and the current collector 73.Furthermore, during the insertion process, the base surface 740 of the receiving recess 743 acts as a stop for the heat exchanger plate. Therefore, the base surface 740 and the side surface(s) of the receiving recess 743 can exert a positioning effect during the installation of the heat exchanger plate and facilitate the installation.

[0104] In some embodiments, the bottom surface 740 of the receiving recess 743 comprises an annular section 744 located on the outer circumferential side of the recess 742.

[0105] In this embodiment, the “ring-shaped section 744” refers to the ring-shaped area formed by the bottom surface 740 of the receiving recess 743.

[0106] This embodiment does not restrict the correspondence between the annular section 744 and the recess 742; it is sufficient that at least one recess 742 has an annular section 744 on its outer circumferential side. Optionally, there is a one-to-one correspondence between the annular section 744 and the recess 742.

[0107] The arrangement of the annular section 744 on the outer circumferential side of the recess 742 can further increase the effective area between the base surface 740 and the heat exchange plate. If the heat exchange plate is connected directly or via other components to the base surface 740, the following applies: the larger the effective area between the base surface 740 and the heat exchange plate (or other components), the better the positioning effect for the heat exchange plate and the easier the installation. Furthermore, a larger effective area leads to a better seal of the heat exchange fluid in the recess 742 and reduces the risk of leakage.

[0108] In some embodiments, the multiple recesses 742 comprise a first recess 745 and a second recess 746. The current collector 73 comprises a first terminal 76 which is connected to the housing 74. The current collector 73 has a first channel 747 which connects the first terminal 76 and the first recess 745.

[0109] In this embodiment, the first connection 76 can be a tubular structure that serves to introduce heat exchange fluid into or from the first recess 745.

[0110] Optionally, the arrangement direction of the first recess 745 and the second recess 746 runs parallel to the arrangement direction of the multiple heat exchange channels.

[0111] Optionally, both the first recess 745 and the second recess 746 are elongated recesses. The embodiments of the present application do not restrict the length ratio between the first recess 745 and the second recess 746. The length of the first recess 745 can be greater, less than, or equal to the length of the second recess 746. For example, if the shape of the series circuit is essentially S-shaped, the length of the first recess 745 in the current collector 73 is shorter than that of the second recess 746.

[0112] This embodiment does not restrict the shape of the first channel 747; it can consist of only one channel section or be formed from several interconnected sections.

[0113] The embodiments of the present application do not restrict the shape of the opening of the first channel 747 towards the first recess 745; this shape may be circular, rectangular, elliptical or any other shape.

[0114] Connecting the first terminal 76 and the first recess 745 via the first channel 747 offers the advantage, compared to a direct connection between the first terminal 76 and the first recess 745, that the shape of the first terminal 76 does not need to be excessively designed. It is sufficient to provide the first channel 747 on the housing 74 for connecting both, which simplifies the arrangement of the first terminal 76 and the first recess 745.

[0115] Optionally, the opening of the first channel 747 is arranged in the base surface 740 of the first recess 745. This arrangement facilitates the placement of the first channel 747 and does not require any additional increase in the volume of the housing 74.

[0116] Optionally, the cross-sectional area of ​​the first channel 747 perpendicular to its longitudinal direction is smaller than the cross-sectional area of ​​the first connection 76 perpendicular to its longitudinal direction.

[0117] In some embodiments, the housing 74 and the first connection 76 are formed in one piece.

[0118] In this embodiment, "one-piece formed" means that the housing 74 and the first connection 75 are machined and formed simultaneously as a single piece during manufacturing, without the need for a subsequent joining step to connect one part to the other. For example, both parts are formed simultaneously from the same material.

[0119] The one-piece manufacturing of housing 74 and first connection 76 can significantly increase the structural strength at their connection point and thus improve the durability of the current collector 73. Furthermore, the one-piece design ensures extremely high tightness at the connection point between housing 74 and first connection 76, reduces the volume of escaping heat exchange fluid, and thus increases the heat exchange effect and reduces the risk of thermal runaway of battery 2.

[0120] Optionally, the housing 74 comprises a main body section 731 and a hollow body section 732. The collecting cavity 741 is formed within the hollow body section 732. The main body section 731 is located on the side of the hollow body section 732 opposite the opening of the collecting cavity 741. The first connection 76 is arranged on the main body section 731. Optionally, the main body section 731 is also connected to the center of the hollow body section 732.

[0121] In some embodiments, the current collector 73 further comprises a second terminal 77. The first terminal 76 and the second terminal 77 are each attached to opposite sides of the housing 74, with the second terminal 77 being connected to the first terminal 76.

[0122] The embodiments described in the present application do not restrict whether the shape of the second terminal 77 is identical to that of the first terminal 76. For example, the shapes of the first terminal 76 and the second terminal 77 may be the same to facilitate manufacturing.

[0123] The first terminal 76 and the second terminal 77 can be directly connected to each other, i.e., they are adjacent to each other, or they can be connected via a channel arranged in the housing 74 between the first terminal 76 and the second terminal 77.

[0124] The second connection 77 and the first connection 76 are each located on the main body section 731.

[0125] The second connection 77 serves to drain the heat exchange fluid from the first connection 76 to an adjacent current collector 73, in order to enable the circulation of the heat exchange fluid in several current collectors 73 and thereby subject several battery cells 5 to heat exchange.

[0126] The connecting pipe 8 serves to connect adjacent current collectors 73 located on the same side of the heat exchanger plate. Specifically, the connecting pipe 8 connects the first terminal 76 of one current collector 73 to the second terminal 77 of the other current collector 73 in two adjacent current collectors.

[0127] Fig. Figure 8 is a schematic representation of the structure of a current collector according to further embodiments of the present application.

[0128] As in Fig. As shown in Figure 8, in some embodiments the housing 74 has a positioning section which serves to interact with an external reference element.

[0129] The embodiments described in the present application do not restrict the specific form of the positioning section. For example, it could be a positioning passage 748, a positioning recess 749, or a precisely fitting surface, etc. The precisely fitting surface could be a rectangular surface, a curved surface, etc., which can interact with the external reference element to enable positioning.

[0130] The embodiments of the present application do not restrict the structure of the reference element. It serves to interact with the positioning section to enable the positioning of at least one current collector. For example: If the positioning section is a positioning passage 748, the reference element comprises a positioning pin that fits the positioning passage 748; if the positioning section is a precisely fitting surface, the reference element comprises a positioning surface that fits the shape of the precisely fitting surface. For example: If the precisely fitting surface is a rectangular surface, the positioning surface is also a rectangular surface.

[0131] Optionally, both the positioning passage 748 and the positioning recess 749 are arranged on the main body section 731.

[0132] The embodiments of the present application do not restrict the shape of the positioning passage 748. By way of example, the shape of the positioning passage 748 can be circular, elliptical, rectangular, or any other shape. The embodiments of the present application also do not restrict the shape of the positioning recess 749. By way of example, the shape of the positioning recess 749 can be U-shaped, semicircular, or any other shape.

[0133] By arranging the positioning section on the housing 74, which interacts with the external reference element, the current collector can be positioned and even fixed, which facilitates the assembly of several current collectors together.

[0134] Fig. Figure 9 is a schematic representation of the structure of a thermal management assembly according to some embodiments of the present application; Fig. 10 is a schematic representation of the structure of a heat exchanger plate of the heat management assembly according to some embodiments of the present application; Fig. Figure 11 is an enlarged representation of area B in Fig. 10.

[0135] As in the Fig. As shown in Figures 9-11, an embodiment of the present application further provides a thermal management assembly 7 comprising a heat exchange plate 71 and the current collector 73 according to any of the above-mentioned embodiments. The heat exchange plate 71 has several heat exchange channels 711. The housing 74 is connected to an end region of the heat exchange plate 71 and closes the several heat exchange channels 711. Each recess 742 is connected to at least one heat exchange channel 711.

[0136] In the embodiments of the present application, the multiple heat exchange channels 711 of the heat exchange plate 71 are arranged side by side. Optionally, the multiple heat exchange channels 711 run parallel to each other.

[0137] The embodiments described in the present application do not restrict the type of connection between housing 74 and heat exchanger plate 71. For example, housing 74 and heat exchanger plate 71 can be connected by welding, gluing, or other methods.

[0138] The embodiments described in the present application do not restrict whether the shapes of the multiple heat exchange channels 711 are identical. The shapes of the multiple heat exchange channels 711 can all be identical, all different, or partly identical and partly different.

[0139] In the embodiments of the present application, the current collector 73 can be arranged at one end of the heat exchange plate 71 or at both ends of the heat exchange plate 71.

[0140] Fig. Figure 12 is a schematic representation of the flow path of the heat exchange fluid in the heat management assembly according to some embodiments of the present application.

[0141] As in Fig. As shown in Figure 12, in some optional embodiments the flow collector 73 is arranged at both ends of the heat exchange plate 71. The recesses include a deflection recess. In the two groups of heat exchange channels 711 connected to the deflection recess, the flow direction of the heat exchange fluid is opposite. In combination with the embodiments above, the second recess 746 is the deflection recess. The projection of the deflection recess along the arrangement direction of the two flow collectors 73 onto the other flow collector 73 covers one of the separation segments 75 of the other flow collector 73. Each group of heat exchange channels 711 comprises at least one heat exchange channel 711, and the flow direction in each heat exchange channel 711 of a heat exchange channel group 711 is the same. The number of heat exchange channels 711 that each heat exchange channel group 711 comprises can be the same or different.

[0142] This arrangement makes it possible for the multiple heat exchange channels 711 and the multiple recesses 742 to form a series connection relatively easily, without the need to specifically design the direction of each individual heat exchange channel 711 for the formation of the series connection.

[0143] Optionally, the number of recesses in the current collector is 742, or two.

[0144] In some embodiments, the heat exchange plate 71 comprises a main plate body 712 and several separating elements 713 arranged in the main plate body 712. The several separating elements 713 serve to divide the main plate body 712 into several heat exchange channels 711.

[0145] The embodiments of the present application do not restrict the shape of the separating elements 713; they can be plate-shaped, block-shaped, or have another form. This embodiment also does not restrict the type of connection between the separating element 713 and the main plate body 712; both can be joined by one-piece forming, welding, or similar methods.

[0146] Optionally, a cavity is formed in the main plate body 712, which penetrates both ends of the main plate body 712. The separating elements 713 are arranged in this cavity.

[0147] The embodiments of the present application do not restrict whether the separating elements 713 are inclined relative to the main plate body 712. That is to say, the separating elements 713 can be arranged inclined within the main plate body 712 or perpendicular to the main plate body 712. If the separating elements 713 are arranged inclined within the main plate body 712, the angles of inclination of the individual separating elements 713 can be the same or different, or some of the separating elements 713 can have the same angles of inclination, while others have different angles.

[0148] The multiple separating elements 713 divide the main plate body 712 into several heat exchange channels 711, which causes the multiple heat exchange channels 711 to be independent of each other. This reduces the risk of heat exchange fluid mixing in adjacent channels 711, thus improving the heat exchange effect and reducing the thermal runaway risk of the battery 2.

[0149] Optionally, the main plate body 712 comprises a first side plate 714 and a second side plate 715. The first side plate 714 and the second side plate 715 are arranged opposite and parallel to each other. The two ends of the separating elements 713 are each connected to the first side plate 714 and the second side plate 715 and are arranged at an angle relative to them.

[0150] Fig. Figure 13 is an exploded view of the structure of a thermal management assembly according to some embodiments of the present application; Fig. Figure 14 is a schematic representation of the structure of a protective plate of the thermal management assembly according to some embodiments of the present application.

[0151] As in the Fig. 13 and Fig. As shown in Figure 14, in some embodiments the thermal management assembly 7 further comprises a protective plate 72. The protective plate 72 is located between the heat exchange plate 71 and the current collector 73 and serves to separate a portion of the heat exchange channels 711 from the collective current cavity 741.

[0152] The embodiments described in the present application do not restrict the type of connection between the protective plate 72, the heat exchange plate 71, and the current collector 73. For example, the protective plate 72, the heat exchange plate 71, and the current collector 73 can be connected by welding, gluing, or other methods.

[0153] The protective plate 72 separates a portion of the heat exchange channels 711 from the manifold cavity 741; that is, the manifold cavity 741 is not connected to all of the heat exchange channels 711 opposite it, but only to a portion of them. For the heat exchange plate 71, this means that no heat exchange fluid circulates in a portion of its channels 711. In this way, while still meeting the heat exchange requirements, the volume of the heat exchange fluid can be reduced, and consequently, the weight of the battery can be decreased.

[0154] In this embodiment, the protective plate 72 for a current collector 73 can cover each recess 742, such that each recess 742 is connected to only a portion of the heat exchange channels 711 opposite it. Naturally, the protective plate 72 can also cover only a portion of the recesses 742 in a current collector 73.

[0155] In some embodiments, the protective plate 72 is formed integrally with the current collector 73; and / or the protective plate 72 is formed integrally with the heat exchange plate 71.

[0156] In the embodiments described in the present application, "formed in one piece" means that both parts are produced simultaneously as a single piece during manufacturing, without the need for a subsequent joining step to connect one of the parts to the other. For example, both parts are formed simultaneously from the same material.

[0157] The one-piece formation of the protective plate 72 with at least one of the two components (current collector 73 or heat exchange plate 71) can simplify subsequent processing steps, and the one-piece formed parts exhibit good sealing. For example: After the one-piece formation of the protective plate 72 with the current collector 73, this unit only needs to be connected to the heat exchange plate 71. This not only eliminates the connection step with the current collector 73, but also achieves good sealing and reduces the possibility of leaks.

[0158] In some embodiments, the manifold cavity 741 includes a receiving recess 743, which is recessed from a side of the housing 74 facing the heat exchanger plate 71. The multiple recesses 742 extend from a bottom surface 740 of the receiving recess 743 in a direction away from the receiving recess 743. The protective plate 72 is connected to the bottom surface 740 of the receiving recess 743.

[0159] The connection of the protective plate 72 to the base surface 740 of the receiving recess 743 can increase the contact area between the protective plate 72 and the current collector 73. The receiving recess 743 exerts a positioning effect on the protective plate 72, facilitates assembly, and the housing 74 can provide protection for the protective plate 72.

[0160] Optionally, the end region of the heat exchange plate 71 is arranged in the receiving recess 743 in a plug-in connection, wherein the end region of the heat exchange plate 71 is connected to the side surface of the receiving recess 743.

[0161] The plug-in connection of the heat exchanger plate 71 with the receiving recess 743 can increase the contact area between the heat exchanger plate 71 and the receiving recess 743. When using welded or adhesive connections, the increased contact area can enhance the structural strength of the connection. Furthermore, the connection of the outer surface of the end region of the heat exchanger plate 71 with the side surface of the receiving recess 743 reduces the risk of heat exchange fluid leaking between the heat exchanger plate 71 and the side surface of the receiving recess 743, thus sealing the heat exchange fluid.

[0162] In some embodiments, the protective plate 72 has several recesses 721. The recess 742 is connected to the heat exchange channel 711 via the corresponding recess 721.

[0163] In this embodiment, the embodiments of the present application do not restrict the shape of the recesses 721. For example, the shape of the recess 721 corresponds to the shape of the opening of the heat exchange channel 711.

[0164] This embodiment does not limit the number of recesses 721 associated with a depression 742. For example: The deflection depression is connected to at least two recesses 721, one recess 721 serving to introduce heat exchange fluid into the deflection depression, and the other serving to discharge heat exchange fluid from the deflection depression. The depression 742 corresponding to the inlet opening of the series circuit is connected to at least one recess 721, and the depression 742 corresponding to the outlet opening of the series circuit is connected to at least one recess 721.

[0165] Optionally, the number of heat exchange channels 711 is the same in each section of the series connection.

[0166] The use of recesses 721 for connecting recess 742 and heat exchange channel 711 has the advantage over sealing by means of several separate sealing plates that a single protective plate 72 can replace several sealing plates, which simplifies assembly.

[0167] In some embodiments, the number of protective plates 72 is two. The two protective plates 72 are arranged at both ends of the heat exchange channels 711. The recesses 721 of the two protective plates 72 correspond to each other in the orientation of the two plates.

[0168] In this embodiment, the recesses 721 of the protective plates 72 arranged at both ends of the heat exchange channels 711 are designed identically, i.e., the number and arrangement position are the same in order to achieve a one-to-one correspondence.

[0169] In this embodiment, the multiple heat exchange channels 711 in the heat exchange plate 71 are connected in series. Each of the multiple heat exchange channels 711 is connected via the recesses 721 at its two ends to the recesses 742 on both sides.

[0170] The arrangement of two protective plates 72 for sealing both ends of the heat exchange channels 711 ensures, compared to a single-sided seal, that the heat exchange fluid remains in constant circulation. This improves the problem of fluid stagnation in channels 711 with a single-sided seal, thus increasing the heat exchange effect and reducing the thermal runaway risk of the battery 2.

[0171] In some embodiments, the protective plate 72 has a first surface 723 and a second surface 724, which are opposite each other. The first surface 723 faces the heat exchange plate 71. The protective plate 72 includes a projection 725 extending from the first surface 723, which is connected to the side wall of the heat exchange channel 711 by a plug connection.

[0172] In the embodiments of the present application, the shape and dimensions of the projection 725 correspond to the shape and dimensions of the corresponding heat exchange channel 711 in order to enable a tighter plug connection.

[0173] The projection 725, which is plug-connected to the side wall of the heat exchange channel 711, enables a closer connection of the projection 725 to the heat exchange plate 71, facilitates its connection and also the subsequent connection to the current collector 73. At the same time, the projection 725 exerts a positioning effect on the heat exchange plate 71 during the mounting of the protective plate 72.

[0174] In some embodiments, the protective plate 72 has a recess 726 which is sunken relative to the second surface 724. The recess 726 is arranged opposite the projection 725.

[0175] In the embodiments of the present application, the “recess 726” refers to a space which is recessed relative to the second surface 724.

[0176] The arrangement of the recess 726 can reduce the weight of the protective plate 72 and increase the energy density of the battery.

[0177] According to some embodiments of the present application, a battery 2 is further provided, comprising a battery cell 5 and the thermal management assembly 7 according to any of the above embodiments. The thermal management assembly 7 serves to regulate the temperature of the battery cell 5.

[0178] According to some embodiments of the present application, an electrical device is further provided, comprising the battery 2 according to any of the above embodiments. The battery 2 serves to provide electrical energy.

[0179] Please refer to the Fig.4-8. An embodiment of the present application provides a current collector 73 for use in a thermal management assembly 7 of a battery. The current collector 73 comprises a housing 74 and a separating segment 75. The housing 74 has a collective flow cavity 741, which serves to be connected to several heat exchange channels of the thermal management assembly. The separating segment 75 is arranged in the collective flow cavity 741. The collective flow cavity 741 comprises several recesses 742, the separating segment 75 separating the several recesses 742 from one another. Each recess 742 serves to be connected to at least one heat exchange channel. The housing 74 and the separating segment 75 are a single-piece formed component. The collective flow cavity 741 includes a receiving recess 743, which is recessed into a side of the housing 74 facing the heat exchange channel.The multiple depressions 742 are recessed into a base surface 740 of the receiving depression 743. The base surface 740 of the receiving depression 743 comprises several annular sections 744. The annular sections 744 are located on the outer circumferential side of the depressions 742.

[0180] The multiple recesses 742 comprise a first recess 745 and a second recess 746. The current collector 73 comprises a first terminal 76, which is connected to the housing 74. The current collector 73 has a first channel 747, which connects the first terminal 76 and the first recess 745. The current collector 73 further comprises a second terminal 77. The first terminal 76 and the second terminal 77 are each located on opposite sides of the housing 74, with the second terminal 77 being connected to the first terminal 76.

[0181] It should be noted that the embodiments in the present application and their features can be combined with each other, provided they are not inconsistent.

[0182] Finally, it should be noted that the above-mentioned embodiments serve only to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preceding embodiments, those skilled in the art should understand that they may nevertheless make modifications to the technical solutions described in the preceding embodiments or replace some of the technical features with equivalent ones. However, these modifications or replacements do not alter the essence of the respective technical solution from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A current collector for a thermal management assembly of a battery, comprising: a housing having a collective current cavity, wherein the collective current cavity serves to be connected to several heat exchange channels of the thermal management assembly; and a separating segment arranged in the collective current cavity, wherein the collective current cavity comprises several recesses and the separating segment separates the several recesses from each other, each of the recesses serving to be connected to at least one of the heat exchange channels. Current collector according to claim 1, wherein the housing and the separating segment are a single-piece formed component. Current collector according to claim 1 or 2, wherein the collecting current cavity comprises a receiving recess which is sunk from a side of the housing facing the heat exchange channel; wherein the multiple recesses are sunk from a bottom surface of the receiving recess in a direction pointing away from the receiving recess. Current collector according to claim 3, wherein the bottom surface of the receiving recess comprises an annular section located on an outer circumferential side of the recess. Current collector according to one of claims 1-4, wherein the multiple recesses comprise a first recess and a second recess; wherein the current collector comprises a first terminal connected to the housing, and the current collector has a first channel connecting the first terminal and the first recess. Current collector according to claim 5, wherein the housing and the first connection are formed in one piece. Current collector according to claim 5 or 6, further comprising a second connection, wherein the first connection and the second connection are each attached to opposite sides of the housing and the second connection is connected to the first connection. Current collector according to one of claims 1-7, wherein the housing has a positioning section that serves to interact with an external reference element. Thermal management assembly comprising: a heat exchange plate forming multiple heat exchange channels; and the current collector according to one of claims 1-8, wherein the housing is connected to an end region of the heat exchange plate and closes the multiple heat exchange channels and each of the recesses is connected to at least one of the heat exchange channels. Heat management assembly according to claim 9, wherein the heat exchange plate comprises a plate main body and several separating elements arranged in the plate main body, wherein the several separating elements serve to divide the plate main body into the several heat exchange channels. Thermal management assembly according to claim 9 or 10, further comprising a protective plate located between the heat exchange plate and the current collector, wherein the protective plate serves to separate a portion of the heat exchange channels from the collective current cavity. Thermal management assembly according to claim 11, wherein the protective plate is formed integrally with the current collector; and / or the protective plate is formed integrally with the heat exchange plate. Thermal management assembly according to claim 11, wherein the collecting flow cavity comprises a receiving recess which is sunk from a side of the housing facing the heat exchange plate, and the multiple recesses are sunk from a bottom surface of the receiving recess in a direction pointing away from the receiving recess; wherein the protective plate is connected to the bottom surface of the receiving recess. Thermal management assembly according to one of claims 11-13, wherein the protective plate has several recesses, and the recess is connected to the heat exchange channel via the corresponding recess. Thermal management assembly according to claim 14, wherein the number of protective plates is two, the two protective plates are arranged accordingly at both ends of the heat exchange channels, and the recesses of the two protective plates correspond to each other in the arrangement direction of the two protective plates. Thermal management assembly according to claim 11, 13, 14 or 15, wherein the protective plate comprises a first surface and a second surface opposite each other, the first surface facing the heat exchange plate, and the protective plate comprises a projection extending from the first surface which is pluggably connected to a side wall of the heat exchange channel. Thermal management assembly according to claim 16, wherein the protective plate comprises a recess which is recessed relative to the second surface and is arranged opposite the projection. Battery, characterized in that it comprises: a battery cell; and the thermal management assembly according to one of claims 9 - 17, wherein the thermal management assembly serves to regulate the temperature of the battery cell. Battery according to claim 18, wherein the number of thermal management assemblies is several, the several thermal management assemblies are arranged one after the other, and the battery cell is arranged between adjacent thermal management assemblies. Battery according to claim 18 or 19, further comprising a connecting tube for connecting adjacent thermal management assemblies. Electrical device comprising the battery according to one of claims 18-20, wherein the battery serves to provide electrical energy.

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