Busbar component, battery and power-consuming device

Abstract

Busbar component for connecting battery units, wherein the busbar component has a predetermined length and thickness, the busbar component comprises in its own longitudinal direction a connecting section and a main body section which are arranged alternately, wherein the main body section is connected to the connecting section on both sides in the longitudinal direction, wherein the connecting section comprises a connecting area which is electrically connected to the battery unit, and in the thickness direction of the busbar component the main body section is at least partially recessed and can deform under a predetermined stress in order to absorb vibrations in the thickness direction.

Description

Busbar component, battery and power-consuming device. Cross-reference to related applications. The present application claims priority over Chinese patent application No. 202221127326.7, filed on May 12, 2022, entitled “Busbar component, battery and power-consuming device”, the entire contents of which are hereby incorporated by reference. Technical field The present application relates to the field of batteries, in particular a busbar component, a battery and a power-consuming device. State of the art In some cases, a battery typically comprises multiple battery units connected in series or parallel to achieve the required output voltage. In such a battery, high-voltage connections between the multiple battery units are typically implemented via a busbar component. This busbar component is bridge-like, positioned between adjacent and spaced-apart battery units. As a result, a portion of the busbar's central section is unsupported and free-floating. If relative vibrations occur between the two battery units connected by the busbar component, the busbar component becomes susceptible to fatigue fractures due to stress concentrations or repeated loading, leading to high-voltage connection failure. This ultimately impairs battery performance and reduces module reliability. Therefore, there is an urgent need for a busbar component that can improve the connection reliability of batteries, as well as for a suitable battery and a power-consuming device. Content of the utility model The present application provides a busbar component, a battery and a power-consuming device in which vibrations in the stacking direction can be absorbed, which can improve the problem of fatigue fractures of the busbar component. In a first aspect, the present application presents a busbar component for connecting battery units, having a predetermined length and thickness, wherein the busbar component comprises, in its own longitudinal direction, a connecting section and a main body section, which are arranged alternately, wherein the main body section is connected to the connecting section on both sides in the longitudinal direction, wherein the connecting section includes a connecting area that is electrically connected to the battery unit, and in the thickness direction of the busbar component, the main body section is at least partially recessed and can deform under a predetermined stress in order to absorb vibrations in the thickness direction. In the technical solution provided by the embodiments of the present application, the busbar component for establishing an electrical connection between battery units is designed such that, in its own longitudinal direction, it comprises the connecting section and the main body section, which are arranged alternately. The connecting section is connected to the battery unit, while the main body section is arranged like a bridge between adjacent battery units and electrically connects the battery units on both sides. In the thickness direction of the busbar component, the main body section has a recessed portion that imparts a certain degree of elasticity. Simultaneously, the main body section can deform accordingly under stress concentration in order to absorb vibrations in the thickness direction.If relative vibrations in the thickness direction occur between the battery units connected on both sides by the connecting sections, the main body section can deform and absorb the vibrations through the deformation and the elasticity of the recess to avoid fatigue fractures in the main body section and to improve the reliability of the entire connection of the busbar component. In some embodiments, the main body section and the connecting section are made of the same material and are formed in one piece. The busbar component in the embodiments of the present application can be made of the same material and manufactured in one piece from a single piece of material, which can simplify the process and reduce costs. In some embodiments, the connecting section comprises several layers stacked on top of each other in the thickness direction. The strength of the connecting section, formed by pressing multiple layers of material together, can be increased, thereby making the connection to the battery unit more reliable. In some embodiments, the connecting section includes a reinforcing coating that is at least partially located in the connection area. The busbar component in the embodiments of the present application can also increase the strength of the area connected to the battery unit by applying the coating to that area and reliably establishing the electrical connection. In some embodiments, the strength of the main body section is lower than the strength of the connecting section. Compared to the connecting section, the main body section can be made of a material with lower hardness and strength, allowing vibrations to be absorbed more easily by the main body section without affecting the connecting section. In some embodiments, the main body section is welded to the connecting section. In embodiments where the strength of the main body section is lower than that of the connecting section, the main body section and the connecting section can be joined by welding to ensure a stable connection without impairing electrical conductivity. In some embodiments, the connecting section and the main body section overlap at least partially in the thickness direction. Besides joining and welding, the connecting section and the main body section can also partially overlap, so that they are connected and fastened by the overlap, thus making the connection more stable. In some embodiments, the connecting section is provided with a first mounting hole and the main body section with a second mounting hole, and the busbar component also includes a fastening element, wherein the first and second mounting holes cooperate through the fastening element to connect and fasten the connecting section to the main body section, and / or one of the main body section and the connecting section is provided with a protruding end and the other with a connecting hole, and the busbar component also includes a limiting element, wherein the protruding end extends through the connecting hole and cooperates with the limiting element to connect and fasten the connecting section to the main body section.In embodiments where the connecting section and the main body section partially overlap, the two can also be joined by drilling and using the fastening element or limiting element. This connection method is simple, structurally stable, and easy to implement. In some embodiments, the connecting section is riveted to the main body section. The connecting section and the main body section can also be joined by a rivet. This joining method is very strong and cost-effective. In a second aspect, the present application provides a battery comprising several battery units and a busbar component of the above embodiments, wherein adjacent battery units are electrically connected by the busbar component. In a third aspect, the present application provides a power-consuming device comprising a battery provided by the embodiments described in the second aspect. The foregoing description merely provides an overview of the technical solutions of the present application. To facilitate a clearer understanding of the technical means employed herein, to make implementation in accordance with the description easier, and to more clearly highlight the aforementioned and other objectives, features, and advantages of the present application, specific embodiments of the present application are hereby provided. Brief description of the drawings Several additional advantages and benefits will become apparent to the person skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings serve only to illustrate the preferred embodiments and are not to be regarded as limiting the present application. Furthermore, the same reference numerals are used in all drawings to designate the same parts. They show: Fig. 1 a schematic representation of the structure of a vehicle according to some embodiments of the present application; Fig. 2 an exploded view of a battery according to some embodiments of the present application; Fig. 3 a schematic representation of the partial structure of the battery from Fig. 2; Fig. 4 a schematic representation of a busbar component according to some embodiments of the present application; Fig. 5 an exploded view of the busbar component from Fig. 4; Fig.6 an exploded view of a busbar component according to some embodiments of the present application; Fig. 7 a schematic representation of a busbar component according to some embodiments of the present application; Fig. 8 an exploded view of the busbar component from Fig. 7; Fig. 9 a schematic representation of a busbar component according to some embodiments of the present application; Fig. 10 an exploded view of the busbar component from Fig. 7; Fig. 11 a schematic representation of a busbar component according to some embodiments of the present application; Fig. 12 an exploded view of the busbar component from Fig. 11. The reference numerals in the detailed embodiments are as follows: 1000, vehicle; 2000, battery; 3000, control; 4000, motor; 100, busbar component; 200, battery unit; 300, box body; 10, connecting section; 20, main body section; 30, fastening element; 40, projecting end; 50, connecting hole; 60, limiting element; 70, first box body section; 80, second box body section; 90, receiving space; 11, connecting area; 12, connecting layer; 13, first fastening hole; 21, recess; 22, second fastening hole; X, longitudinal direction; Y, thickness direction. Detailed description of the embodiments The following describes in detail the embodiments of the technical solutions of the present application with reference to the drawings. These embodiments serve only to clarify the technical solution of the present application and are therefore merely examples; they cannot be used to limit the scope of protection of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as generally understood by a person skilled in the art; the terms used herein are only for the purpose of describing certain embodiments and are not intended to limit this application; the terms "comprise" and "feature" and all variations thereof, as used in the description and claims of this application and in the preceding description of the drawings, are intended to cover non-exclusive embodiments. In the description of embodiments of the present application, technical terms such as "first" and "second", etc., are used solely to distinguish between different objects and should not be interpreted as indicating or suggesting a relative meaning, nor as implicitly specifying the quantity, particular order, or hierarchical relationship of the technical features mentioned. In the description of embodiments of the present application, the term "several" refers to more than two, unless expressly stated otherwise. The reference to "embodiment" here means that a particular feature, structure, or property described in connection with the embodiments may be included in at least one embodiment of the present application. The occurrence of this expression at different points in the description does not necessarily always refer to the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments. It is expressly and implicitly clear to the person skilled in the art that the embodiments described herein may be combined with other embodiments. In the description of the embodiments of this application, the term "and / or" serves only to describe an associative relationship between the associated objects, indicating that three types of relationships are possible, such as A and / or B, which can be represented by the following three scenarios: A alone, both A and B, and B alone. Furthermore, the symbol " / " in this document generally represents an "or" relationship between the leading and trailing associated objects. In the description of embodiments of the present application, the term “several” refers to two or more (including two), likewise “several sets” refers to two or more sets (including two sets) and “several sheets” refers to two or more sheets (including two sheets). In the description of the embodiments of this application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical", "at the very top", "at the very bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are based on the orientation or positional relationships shown in the drawings. These terms serve solely to facilitate and simplify the description of the embodiments of this application and are not intended to indicate or imply that the devices or elements mentioned must necessarily have a particular orientation, be constructed in a particular orientation, or be operated in a particular orientation. Therefore, they should not be interpreted as limitations on the embodiments of this application. In the description of the embodiments of this application, technical terms such as "assemble," "connect," "couple," and "fasten" are to be interpreted broadly unless expressly stated and defined otherwise. They may, for example, denote a permanent connection, a detachable connection, or an integral structure; they may refer to a mechanical or electrical connection; they may be direct connections or indirect connections via an intermediate medium; they may represent the internal connectivity between two components or the interactive relationship between two components. The person skilled in the art may understand the specific meanings of the aforementioned terms within the embodiments of this application based on the respective circumstances. The use of high-performance batteries is steadily increasing. They are widely used in energy storage systems for power plants, as drive systems for vehicles, and even in aerospace. Consequently, market demand for high-performance batteries is also continuously rising. To achieve a specific output power or voltage, the battery sometimes consists of several battery units connected in series or parallel. High-voltage connections between the multiple battery units typically require a busbar component for electrical connection. The inventors of the present application have found that during battery operation, when the battery is subjected to vibrations caused by external influences, differences in vibration amplitude typically occur between adjacent battery units or batteries. This leads to relative vibrations between adjacent battery units or batteries. Considering the installation direction of the battery units, these relative vibrations typically propagate along the thickness of the busbar component. Based on this, a defined gap is usually provided between adjacent battery units or batteries to allow for expansion clearance. In this case, a portion of the central section of the busbar component corresponding to the gap forms a bridge-like structure that rests on both sides and is unsupported at the bottom.To establish the electrical connection, the busbar component is typically made of a wear-resistant hard metal. This busbar component, which is sometimes arranged in a bridge-like configuration, is subject to stresses from the described relative vibrations. These stresses, due to repeated stress concentration, can lead to fatigue fractures, ultimately causing failures in the high-voltage measurement. Based on the above considerations, the inventors of the present application propose a busbar component and a corresponding battery to solve the problem of busbar component fractures caused by stresses during battery operation. By modifying the inherent hardness of the busbar component, the relative vibrations between its two ends in its own thickness direction are absorbed, thereby improving the problem of fatigue fractures of the busbar component. The technical solution described in the embodiments of the present application is applicable to batteries as well as to power-consuming devices that use the batteries. The devices that consume electricity can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas vehicles, or vehicles with alternative propulsion systems. Vehicles with alternative propulsion systems can be pure electric vehicles, hybrid vehicles, or vehicles with extended range, etc. Spacecraft include airplanes, rockets, space shuttles, and other 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.The power tools include metalworking tools, grinding tools, assembly tools and railway vehicle tools such as drills, angle grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. The embodiments of the present application do not constitute any particular restrictions on the aforementioned power-consuming devices. It is understood that the battery disclosed in the embodiments of the present application can be used in the above-mentioned power-consuming devices, such as vehicles, ships, or aircraft, without being limited thereto. A power supply system for the power-consuming devices can be used, comprising a busbar component, a battery, etc., disclosed in the present application. On this basis, the present application is described in the following embodiments and in the accompanying drawings by way of an example in which the busbar component is arranged between adjacent battery units. However, it is understood that the present application is not limited thereto.The busbar component provided in the embodiments of the present application can also be used in other applications where relative vibrations occur and electrical connections are required, and is protected accordingly. For the sake of clarity, the following examples of implementation are illustrated using a vehicle as an example of a power-consuming device. Fig. 1 is a schematic representation of the structure of a vehicle according to some embodiments of the present application. As shown in Fig. 1, a battery 2000 is arranged inside the vehicle 1000, and the battery 2000 can be located on the underside, in the front area, or at the rear of the vehicle 1000. The battery 2000 can be used to power the vehicle 1000. For example, the battery 2000 can serve as the operating current source for the vehicle 1000. The vehicle 1000 can further comprise a controller 3000 and a motor 4000, wherein the controller 3000 is used to control the battery 2000 to supply power to the motor 4000, for example to meet the work power requirements of the vehicle 1000 when starting, navigating and driving. In some embodiments of the present application, the battery 2000 can serve not only as an operating current source for the vehicle 1000, but also as a propulsion current source for the vehicle 1000, replacing fuel or natural gas wholly or partially to provide the propulsion of the vehicle 1000. Fig. 2 shows an exploded view of a battery according to some embodiments of the present application, Fig. 3 shows a schematic representation of the partial structure of the battery from Fig. 2 and Fig. 4 shows a schematic representation of a busbar component according to some embodiments of the present application. As shown in Figs. 2, 3 to 4, the battery 2000 can comprise a housing 300, a battery unit 200, and a busbar component 100. The busbar component 100 serves to electrically connect at least two battery units 200. The busbar component 100 comprises a connecting section 10 and a main body section 20. The connecting section 10 is electrically connected to the battery unit 200. Optionally, the box body 300 serves to accommodate the battery unit, and the box body 300 can be configured in various ways. In some embodiments, the box body 300 can comprise a first box body section 70 and a second box body section 80. The first box body section 70 and the second box body section 80 overlap each other, and together they define a receiving space 90 for accommodating the battery units 200.The second box body section 80 can have a hollow structure open on one side, while the first box body section 70 has a plate-like structure, with the first box body section 70 covering the open side of the second box body section 80 to form the box body 300 with the receiving space 90; the first box body section 70 and the second box body section 80 can also each be a hollow structure open on one side, with the open side of the first box body section 70 covering the open side of the second box body section 80 to form the box body 300 with the receiving space 90. Naturally, the first box body section 70 and the second box body section 80 can have different shapes, for example, the shape of a cylinder, a cuboid, and the like. To increase the tightness of the connection between the first box body section 70 and the second box body section 80, a sealing element, such as a sealant, a sealing ring, etc., can also be provided between the first box body section 70 and the second box body section 80. Assuming that the first box body section 70 covers the top of the second box body section 80, the first box body section 70 can also be referred to as the upper box cover and the second box body section 80 as the lower box body. Optionally, the battery 2000 can contain multiple battery units 200. If multiple battery units 200 are present, they can be connected in series, parallel, or a mixed circuit, where a mixed circuit means that the multiple battery units 200 are connected in both series and parallel configurations. The multiple battery units 200 can be connected directly in series, parallel, or a mixed circuit. Of course, the multiple battery units 200 can also first be connected in series, parallel, or a mixed circuit to form a battery module, and several battery modules can then be further connected in series, parallel, or a mixed circuit to form a whole that is housed in the casing 300. Referring to Figures 2 and 3, some embodiments provide for several battery units 200, wherein the several battery units 200 are initially connected in series, parallel, or in a mixed configuration to form a battery module. Several battery modules are further connected in series, parallel, or in a mixed configuration to form a whole. The multiple battery units 200 in the battery module can be electrically connected to one another by means of a busbar component 100 in order to realize the parallel, series or mixed connection of the multiple battery units 200 in the battery module. One or more busbar components 100 can be provided. The busbar components 100 each electrically connect at least two battery units 200 to one another. Reference is also made below to Figs. 3, 4 to 5. Fig. 3 shows a schematic representation of the partial structure of the battery from Fig. 2, Fig. 4 shows a schematic representation of a busbar component according to some embodiments of the present application, and Fig. 5 shows an exploded view of the busbar component from Fig. 4. The present application provides a busbar component 100 for connecting battery units 200, which has a predetermined length and thickness, wherein the busbar component 100 comprises in its own longitudinal direction X a connecting section 10 and a main body section 20, which are arranged alternately, wherein the main body section 20 is connected on both sides in the longitudinal direction X to the connecting section 10, wherein the connecting section 10 comprises a connecting area 11 which is electrically connected to the battery unit 200, and in the thickness direction Y of the busbar component 100 the main body section 20 is at least partially recessed and can deform under a predetermined stress in order to absorb vibrations in the thickness direction Y. The busbar component 100 provided by the embodiments of the present application is arranged in a bridge-like fashion between the battery units 200 and comprises a connecting section 10 and a main body section 20, which are arranged alternately. The connecting section 10 serves for the electrical connection with the cell of the battery unit 200, and the main body section 20 is arranged between two adjacent connecting sections 10 and electrically connects the two connecting sections 10 to each other, thus establishing the necessary electrical connection between the battery units 200. Each connecting section 10 comprises at least one connection area 11, which is electrically connected to the battery unit 200.The connection area 11 can be welded to the electrode terminal of the battery unit 200, the strength of which is subject to certain requirements. Simultaneously, the main body section 20 bridges the gap between two adjacent battery units 200 and is arranged in a bridge-like manner between the connection sections 10 that are connected to these two battery units 200. In the embodiments of the present application, the main body section 20 is made of a material with low hardness. Therefore, if relative vibrations occur between the battery units 200 on both sides, i.e., if relative vibrations arise between the connecting sections 10 on both sides of the main body section 20, the busbar component 100 could be subjected to a stress exceeding a preset value. In this case, the main body section 20 deforms first, thus mitigating the problem of stresses generated by vibrations being concentrated at an unsupported point in the main body section 20 and potentially leading to fractures. Simultaneously, the effect of relative vibrations on the connecting sections 10 is also reduced.This ensures a stable and reliable connection between the connection sections 10 and the battery units 200, increasing the overall reliability of the battery 2000 and enabling its flawless operation even in harsh environments with frequent vibrations. For example, the main body section 20 can be made of a highly conductive, soft, and corrosion-resistant material. For instance, the main body section 20 could be made of a soft aluminum sheet. However, it is understood that the present application is not limited to this. Based on this, the main body section 20 is provided with a recess 21 that extends in its own thickness direction. Optionally, the recess 21 extends towards the battery unit 200, i.e., the recess 21 is located in the gap between the two adjacent battery units 200, thus saving space for the arrangement of the busbar component 100 and the battery units 200. The recess 21 gives the main body section 20 a certain degree of elasticity and damping effect. If the main body section 20 is subjected to an external stress, it can initially absorb some of the stress through the change in angle between the bottom and the side wall of the recess 21. If the stress exceeds a preset value, the main body section 20 continues to deform due to the relatively soft material without breaking.By combining its material and the structure of the recess 21, the upper load limit that the main body section 20 can withstand can be effectively increased and the reliability of the connection can be further enhanced. It is understood that each busbar component 100 in the embodiments of the present application can comprise several connecting sections 10 and several main body sections 20. The connecting sections 10 can be designed according to the position and number of connected battery units 20. It is sufficient to ensure that a connecting section 10 is arranged on both sides of each main body section 20 in the longitudinal direction X. That is, several adjacent connecting sections 10 can be present.In the embodiments with multiple connecting sections 10 and multiple main body sections 20, these connecting sections 10 and main body sections 20 can be arranged alternately running in the same direction, or, depending on the relative position to the battery units 200 to be connected, the direction of travel of the busbar component 100 can be angled or offset accordingly. Based on this, the present application is described in the following embodiments and in the accompanying drawings by way of an example structure in which two connecting sections 10 and a main section 20 are arranged between two adjacent battery units 200 and are connected. It is understood, however, that the present application is not limited to this. In some embodiments, the main body section 20 and the connecting section 10 are made of the same material, and the main body section 20 and the connecting section 10 are formed in one piece. In the embodiments of the present application, the busbar component 100 can be made entirely of the same material, allowing the connecting section 10 and the main body section 20 to be manufactured completely and in one piece. That is, the connecting section 10 and the main body section 20 can be manufactured in one piece from a material with low hardness that can deform under a predetermined stress, thus eliminating the need to join the connecting section 10 and the main body section 20, thereby saving costs. In this embodiment, it should be noted that the busbar component 100 consists of the connecting section 10 and the main body section 20, and that the connecting section 10 is connected to the battery unit 200, with this connection typically being made by welding. Due to the requirements of the welding conditions, the connecting section 10 must have a certain strength and size at this point. That is, the connecting section 10 must meet the requirements for the welding process so that a stable connection with the battery unit 200 can be established. Therefore, when selecting the material for the connecting section 10, it must be ensured that this material has sufficient strength for one-piece manufacturing. Reference is made below to Fig. 6. Fig. 6 shows an exploded view of a busbar component according to some embodiments of the present application. In some embodiments, the connecting section 10 comprises several connecting layers 12 stacked on top of each other in the thickness direction Y. As mentioned previously, the connecting section 10 in the busbar component 100 must be electrically connected to the battery unit 200. This connection can be made by welding, which is why certain requirements are placed on the strength of the connecting section 10 itself. In embodiments where the connecting section 10 and the main body section 20 are formed in one piece from a material with low hardness, the material of the connecting section 10 itself may not meet the required welding conditions. In this case, the connecting section 10 can be reinforced to improve its overall strength. For example, the connecting section 10 can be formed by pressing together several layers of material; that is, several connecting layers 12 are provided and the several connecting layers 12 are pressed together to form a connecting section 10.This increases the strength of the connecting section 10 and makes the connection between it and the battery unit 200 more stable and reliable. It is understood that the contour shapes and sizes of the multiple connection layers 12 can be the same or different. When connecting the multiple connection layers 12, it should first be ensured that most of the stacked connection layers 12 are arranged in the connection area 11 in order to initially increase the strength of the connection area 11 to the standard for connection with the battery unit 200. Optionally, if the shapes of the individual connection layers 12 are not the same, in each pair of adjacent connection layers 12, the orthographic projection contour of the connection layer 12 furthest from the battery unit 200 onto the connection layer 12 closest to the battery unit 200 can lie within the contour of the latter.This means that along the direction towards the battery unit 200, the area of ​​the connection layer 12 can be gradually increased to initially ensure a stable connection with the battery unit 200. It is understood that in the embodiments where the connecting section 10 has several stacked connecting layers 12, the main body section 20 can also be multilayered, i.e., it is produced by hot pressing several thin layers. In this case, the number of thin layers in the main body section 20 and the number of connecting layers 12 in the connecting section 10 can be the same or different. It is sufficient to ensure that the overall hardness of the main body section 20 allows for deformation rather than fracture upon vibration in the thickness direction Y. The present application does not impose any restrictions in this regard. In some embodiments, the connecting section 10 includes a reinforcing coating which is at least partially arranged in the connecting area 11. In the embodiments of the present application, the busbar component 100 can also increase the strength of the connection section 10 by applying a reinforcing coating. Simultaneously, depending on the material of the reinforcing coating, corresponding parameters such as the wear resistance and corrosion resistance of the connection section 10 can be improved. The reinforcing coating can be applied either to cover the entire connection section 10 or only to the connection area 11 to improve the strength of the connection area 11, thereby making it suitable for welding and improving the reliability of the electrical connection. Optionally, a corrosion-resistant metal such as tin, chromium, nickel, or zinc can be used as the material for the reinforcing coating. In some embodiments, the strength of the main body section 20 is less than the strength of the connecting section 10. In the busbar component 100 provided by the embodiments of the present application, the main body section 20 can be made of a material with lower hardness and lower strength than the connecting section 10. That is, the main body section 20 and the connecting section 10 can also be made of different materials and machined separately. In this case, the main body section 20 is more susceptible to deformation. Unlike the connecting section 10, which is connected to a surface of the battery unit 200, the main body section 20 is arranged in a bridge-like manner between the connecting sections 10 on both sides; that is, the main body section 20 is unsupported at the bottom. Due to these two factors, the main body section 20 deforms first when vibration is applied to the battery units 200. This allows it to absorb relative vibrations between adjacent battery units 200 without easily breaking.In this way, vibration influences on the connection between the connection section 10 and the battery unit 200 can be eliminated while maintaining the electrical connection, thus ensuring the overall stability of the electrical connection between the battery units 200. In some embodiments, the main body section 20 is welded to the connecting section 10. In embodiments where the connecting section 10 and the main body section 20 in the busbar component 100 according to the present application are made of different materials and processed separately, the main body section 20 and the connecting section 10 can be joined by welding. In this case, the main body section 20 and the connecting section 10 can be arranged in the same plane, and the edges to be joined are brought together and then welded. This allows the overall thickness of the busbar component 100 to be reduced, further saving space, while at the same time ensuring a reliable electrical connection. In some embodiments, the connecting section 10 and the main body section 20 overlap at least partially in the thickness direction Y. In contrast to the aforementioned joining method by joining and welding, the connecting section 10 and the main body section 20 can also partially overlap, so that they are connected and fastened by the overlap. The connection and fastening can be achieved, for example, by drilling holes in the overlapping sections and fastening with fasteners, by gluing or hot pressing, or by welding in the overlapping sections. The present application does not impose any restrictions in this regard. By using the overlapping sections for connection and fastening, the connection between the main body section 20 and the connecting section 10 can be made more stable and reliable. In some embodiments, the connecting section 10 is provided with a first mounting hole 13 and the main body section 20 with a second mounting hole 22, and the busbar component 100 also includes a fastening element 30, wherein the first mounting hole 13 and the second mounting hole 22 cooperate through the fastening element 30 to connect and fasten the connecting section 10 to the main body section 20, and / or one of the main body section 20 and the connecting section 10 is provided with a projecting end 40 and the other with a connecting hole 50, and the busbar component 100 also includes a limiting element 60, wherein the projecting end 40 extends through the connecting hole 50 and cooperates with the limiting element 60 to connect and fasten the connecting section 10 to the main body section 20. Reference is also made to Figures 7 and 8 below. Figure 7 shows a schematic representation of a busbar component according to some embodiments of the present application, and Figure 8 shows an exploded view of the busbar component from Figure 7. In the embodiments in which the connecting section 10 and the main body section 20 have partially overlapping areas in the busbar component 100, various connection methods can be used between the connecting section 10 and the main body section 20. In some optional examples, a first fastening hole 13 and a second fastening hole 22 can be provided in the overlapping area of ​​the connecting section 10 or in the overlapping area of ​​the main body section 20, respectively, with the two fastening holes being directly opposite each other in the thickness direction Y.The fastening element 30 can then be inserted through the two mounting holes simultaneously and locked in place to connect and secure the connecting section 10 and the main body section 20. For example, the fastening element 30 can comprise a screw and a nut. It is understood that the embodiments of the present application do not impose any specific restrictions regarding the shape of the first fastening hole 13 and the second fastening hole 22. These may have round, square, triangular, or other shapes. Accordingly, the shape of the fastening element 30 is adapted to the shape of the holes. It is sufficient if the shapes of the two fastening holes and the fastening element 30 ultimately match each other. Reference is also made below to Figures 9 and 10. Figure 9 shows a schematic representation of a busbar component according to some embodiments of the present application, and Figure 10 shows an exploded view of the busbar component from Figure 9. In some further optional examples, one section of the connecting section 10 and the main body section 20 may be provided with a connecting hole 50, while the other section may be provided with a projecting end 40. The projecting end 40 begins in the overlapping area of ​​the other section from the surface nearest to the first section and projects towards the first section. The projecting end 40 and the connecting hole 50 are directly opposite each other in the thickness direction Y, so that the projecting end 40 can be passed through the connecting hole 50 during assembly.The exposed part of the protruding end 40 after passing through the connecting hole 50 interacts with the limiting element 60 to connect and fasten the connecting section 10 and the main body section 20. For example, the outer circumferential surface of the projecting end 40 may be threaded, and the limiting element 60 may be a nut; or the projecting end 40 may be a fastening pin and the limiting element 60 a detent device; or the projecting end 40 may have a through-hole parallel to the plane of the connecting section 10, and the limiting element 60 may be a positioning pin passing through this through-hole. The present application does not impose any specific restrictions on the specific connection method. In summary, in the embodiments where the connecting section 10 and the main body section 20 partially overlap, the two can also be connected by drilling and using the fastening element or limiting element. This connection method is simple, structurally stable, and easy to implement. Reference is also made below to Figures 11 and 12. Figure 11 shows a schematic representation of a busbar component according to some embodiments of the present application, and Figure 12 shows an exploded view of the busbar component from Figure 11. In some embodiments, the connecting section 10 is riveted to the main body section 20. In embodiments where the connecting section 10 and the main body section 20 partially overlap in the busbar component 100, the connecting section 10 and the main body section 20 can also be joined by riveting. A rivet hole is provided in each of the overlapping areas of the connecting section 10 and the main body section 20. A rivet is inserted through both rivet holes simultaneously, and a force is then applied to form a rivet head on the rivet, thereby connecting the connecting section 10 and the main body section 20 in a stacked configuration.It is understood that, similar to the previously described arrangement methods of the protruding end 40 and the connecting hole 50, the rivet can also be pre-attached to a section from the connecting section 10 and the main body section 20, then guided through a pre-made hole on the other section and finally the rivet head is formed. Riveting requires simple equipment and provides a strong, vibration- and shock-resistant connection. Therefore, it is frequently used in situations involving vibration. Joining the main body section 20 to the connecting section 10 by riveting ensures a more stable and reliable connection while also reducing costs. As shown in Fig. 2, in a second aspect the present application provides a battery 2000 comprising several battery units 200 and a busbar component 100 of the above embodiments, wherein adjacent battery units 200 are electrically connected by the busbar component 100. The embodiments of the present application further provide a battery 2000 comprising several battery units 200 as described above. It is understood that each of the battery units 200 comprises one or more cells. If the battery unit 200 comprises several cells, each cell is electrically connected to the connecting section 10. A main body section 20 is arranged between two adjacent battery units 200, which electrically connects the connecting sections 10 on both sides. The number of cells in each battery unit 200 can be the same or different. It suffices to adjust the length of the connecting section 10 and the position of the connecting area 11 accordingly. The present application does not impose any restrictions in this regard. The multiple battery units 200 in the battery 2000 can be arranged in a straight line, in a zigzag pattern, or in several rows or columns.The direction of extension of the connecting section 10 must coincide with the direction of extension of the connected battery unit 200. Simultaneously, the direction of extension of the main body section 20 is determined based on the relative position between the adjacent battery units 200, and the circuit is designed according to the output power or voltage requirements. The battery 2000 provided by the embodiments of the present application can also include a separating plate, wherein the separating plate is arranged on the same plane as the busbar component 100, i.e., between the upper cover of the battery box body and the multiple battery units 200. In this case, the separating plate consists of an insulating material and has several holes arranged in it that have the same shape as the busbar component 100. During the manufacturing process of the battery 2000, the multiple busbar components 100 can first be fully embedded in the separating plate according to predetermined positions; subsequently, the separating plate can be welded uniformly to the multiple cells of the multiple battery units 200, thereby effectively increasing production efficiency and reducing alignment deviation during welding. As shown in Fig. 1, the present application further provides a power-consuming device comprising a battery 2000 provided by the embodiments described in the second aspect. As already mentioned, the battery 2000 can be used as a drive or control current source for the power-consuming device 1000. By way of example, the busbar component 100 provided by the embodiments of the present application can comprise two spaced-apart connecting sections 10 and a main body section 20 arranged between and connected to the two connecting sections 10, wherein the main body section 20 and the two connecting sections 10 each have at least partially overlapping areas and can be joined in the overlapping areas by welding. The hardness of the main body section 20 in the busbar component 100 is lower than that of the connecting section 10, and the main body section 20 can deform when subjected to vibrations perpendicular to the overlap direction. This prevents fracture of the main body section 20 due to vibrations and effectively improves the stability and reliability of the connection by means of the busbar component 100.Furthermore, the main body section 20 can have a recess 21. When the busbar component 100 is arranged between and connected to the battery cells 200, the recess 21 extends towards the battery unit 200. Due to the elasticity formed by the recess 21 and the lower hardness of the main body section 20, vibrations can be absorbed more effectively without fracture. Finally, it should be noted that the above embodiments serve only to illustrate the technical solutions of the present application and do not limit them. Although the present application has been described in detail with reference to the above embodiments, it should be clear to those skilled in the art that the technical solutions described in the above embodiments can be modified or some or all of the technical features can be replaced by equivalent features without such modifications or replacements altering the essential character of the corresponding technical solutions beyond the scope of the technical solutions of the embodiments of the present application, and all of them should fall within the scope of the claims and the description of the present application.In particular, the technical features mentioned in the individual embodiments can be combined in any way, provided there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions that fall within the scope of the claims. QUOTES INCLUDED IN THE DESCRIPTION This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature CN 202221127326.7

[0001]

Claims

Busbar component for connecting battery units, wherein the busbar component has a predetermined length and thickness, the busbar component comprises in its own longitudinal direction a connecting section and a main body section which are arranged alternately, wherein the main body section is connected to the connecting section on both sides in the longitudinal direction, wherein the connecting section comprises a connecting area which is electrically connected to the battery unit, and in the thickness direction of the busbar component the main body section is at least partially recessed and can deform under a predetermined stress in order to absorb vibrations in the thickness direction. Busbar component according to claim 1, wherein the main body section and the connecting section are made of the same material, and the main body section and the connecting section are formed in one piece. Busbar component according to claim 1 or 2, wherein the connecting section comprises several connecting layers stacked on top of each other in the thickness direction. Busbar component according to one of claims 1 to 3, wherein the connecting section comprises a reinforcing coating which is at least partially arranged in the connecting area. Busbar component according to claim 1, wherein the strength of the main body section is less than the strength of the connecting section. Busbar component according to claim 5, wherein the main body section is welded to the connecting section. Busbar component according to claim 5, wherein the connecting section and the main body section overlap at least partially in the thickness direction. Busbar component according to claim 7, wherein the connecting section is provided with a first mounting hole and the main body section with a second mounting hole, and the busbar component also comprises a fastening element, wherein the first and the second mounting holes cooperate through the fastening element to connect and fasten the connecting section to the main body section; and / or one of the main body section and the connecting section is provided with a projecting end and the other with a connecting hole, and the busbar component also comprises a limiting element, wherein the projecting end extends through the connecting hole and cooperates with the limiting element to connect and fasten the connecting section to the main body section. Busbar component according to claim 7, wherein the connecting section is riveted to the main body section. Battery, wherein it comprises several battery units and a busbar component according to any one of claims 1 to 9, wherein adjacent battery units are electrically connected by the busbar component. Power-consuming device comprising a battery device according to claim 10.

Images