Beam structure of battery, battery and electric device

Abstract

The present application relates to the technical field of batteries. Disclosed are a beam structure of a battery, a battery and an electric device. The beam structure comprises: a mounting member, which is provided with a first mounting position where a high-voltage control element is mounted; and an expansion beam, which is provided with a second mounting position where the high-voltage control element and a connecting terminal of a battery cell group are mounted, at least part of the expansion beam being connected to the mounting member into one piece.

Description

Battery beam structure, battery and power-consuming device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number: 202322953564.4 and application date of November 1, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a battery beam structure, a battery, and an electrical device. Background Art

[0004] Generally, the mounting plate of the high-voltage control element in the battery is welded and assembled on the box body, and the connection terminals of the battery cell group are installed on the expansion beam, which is also welded and assembled on the box body. The two parts are connected by a hard aluminum bar. The deviation caused by multiple welding connections between the expansion beam and the mounting plate can easily lead to poor assembly of the hard aluminum bar, reducing production efficiency.

[0005] Summary of the Invention

[0006] The present application provides a battery beam structure, a battery and an electrical device to solve the problem that the mounting plate and the expansion beam of the existing high-voltage control element are welded multiple times, which easily leads to poor assembly of the hard aluminum bar.

[0007] In a first aspect, embodiments of the present application provide a battery beam structure, a battery, and an electrical device, including:

[0008] A mounting member, wherein the mounting member is provided with a first mounting position for mounting a high-voltage control element;

[0009] An expansion beam is provided with a second mounting position, the second mounting position is used to mount a connection terminal of a battery cell group, and at least a portion of the expansion beam is connected to the mounting member as an integral part.

[0010] In the above technical solution, by arranging the mounting piece and at least part of the expansion beam to be connected as an integral piece, the relative position of the first mounting position on the mounting piece and the second mounting position on the expansion beam is fixed. In the subsequent assembly, it is convenient to connect the hard aluminum bar to the connection terminals of the high-voltage control element and the battery cell group, thereby reducing the probability of poor assembly of the hard aluminum bar due to multiple welding assemblies, and improving production efficiency and product quality.

[0011] In some embodiments, the expansion beam comprises:

[0012] A beam body, wherein the beam body has a cavity, and the second mounting position is provided on the beam body;

[0013] a reinforcing plate, the reinforcing plate being disposed in the cavity and connected to the beam body;

[0014] Wherein, one of the beam body and the reinforcement plate is connected to the mounting member as a whole.

[0015] In the above technical solution, the structural strength of the expansion beam is improved by setting a reinforcement plate, and the probability of misalignment between the first installation position and the second installation position due to multiple welding is reduced by connecting the reinforcement plate and one of the beam body to the mounting member as one.

[0016] In some embodiments, the beam body includes a first beam body and a second beam body, the first beam body is arranged on a side close to the mounting member relative to the second beam body, the upper parts of the first beam body and the second beam body are connected, and together define the cavity with an open lower end, the first part of the reinforcing plate is located in the cavity and connected to the first beam body and the second beam body, and the second part of the reinforcing plate extends from the lower end of the cavity to be connected to the mounting member as an integral part.

[0017] In the above technical solution, the first beam body and the second beam body are provided to facilitate the assembly of the beam body and the reinforcing plate. The structure of the reinforcing plate is simple. By providing the second part of the reinforcing plate and connecting it with the mounting part as a whole, the production and processing are simple, and the production cost is reduced.

[0018] In some embodiments, the first part includes a plurality of reinforcement segments and support segments distributed along the up and down directions, two adjacent reinforcement segments are respectively connected to the first beam body and the second beam body, the support segment is connected between the two adjacent reinforcement segments, and the support segment located at the lower end is connected to the second part.

[0019] In the above technical solution, multiple reinforcement sections and support sections are provided so that the reinforcement plate is supported between the first beam body and the second beam body, and multiple frame structures are formed to improve the structural strength of the expansion beam.

[0020] In some embodiments, the lower end of the first beam is provided with a flange extending in a direction close to the mounting member, and the flange is connected to the second portion.

[0021] In the above technical solution, the overall structural strength of the expansion beam is improved by providing a flange connected to the second part.

[0022] In some embodiments, the second portion is provided with a plurality of mounting holes, and the flange is provided with a plurality of avoidance grooves at positions corresponding to the plurality of mounting holes.

[0023] In the above technical solution, multiple mounting holes and multiple avoidance grooves are provided to facilitate the installation of components such as the BMS (Battery Management System) and the BMU (Battery Management Unit).

[0024] In some embodiments, a first groove is provided at the upper end of the first beam body, and a second groove is provided at the upper end of the second beam body, and the first groove and the second groove define the second installation position.

[0025] In the above technical solution, the second installation position is defined by providing the first groove and the second groove to facilitate the assembly of the output pole.

[0026] In some embodiments, the first beam body is provided with a concave-convex structure.

[0027] In the above technical solution, the structural strength of the first beam body is increased by providing a concave-convex structure on the first beam body.

[0028] In some embodiments, the mounting member comprises:

[0029] a main board body, wherein the first mounting position is provided on the main board body;

[0030] a bending portion, one end of which is connected to the side of the main body by bending, and the other end of which is connected to the expansion beam as an integral part;

[0031] The legs are connected to the side of the main body and are used to connect to the box of the battery.

[0032] In the above technical solution, the bending portion is provided so that the mounting member and the expansion beam are connected as one body, and the supporting legs are provided so that the mounting member and the battery box are fixedly connected.

[0033] In some embodiments, the bending portion is bent downward from the main body toward one side of the expansion beam, the upper end of the support leg is connected to the main body, and the lower end of the support leg is used to connect to the battery box.

[0034] In the above technical solution, the main board body is spaced apart from the battery box body by providing the bent portion and the legs, so as to facilitate the assembly of the high-voltage control element in the first installation position.

[0035] In a second aspect, an embodiment of the present application provides a battery, comprising:

[0036] Box;

[0037] The beam structure as described in any solution of the first aspect is installed in the box;

[0038] a high-voltage control element, installed at the first installation position;

[0039] The output pole is installed at the second installation position;

[0040] A battery cell group is installed in the box, and the connection terminals of the battery cell group are electrically connected to the high-voltage control element through the output pole.

[0041] In the above technical solution, by arranging the mounting piece and at least part of the expansion beam to be connected as an integral piece, the relative position of the first mounting position on the mounting piece and the second mounting position on the expansion beam is fixed. In the subsequent assembly, it is convenient to connect the hard aluminum bar to the connection terminals and output poles of the high-voltage control element and the battery cell group, thereby reducing the probability of poor assembly of the hard aluminum bar due to multiple welding assemblies, and improving production efficiency and battery quality.

[0042] In a third aspect, an embodiment of the present application provides an electrical device, including:

[0043] The battery as described in the second aspect is used to supply power to the electrical device.

[0044] In the above technical solution, by arranging the mounting piece and at least part of the expansion beam to be connected as an integral piece, the relative position of the first mounting position on the mounting piece and the second mounting position on the expansion beam is fixed. In the subsequent assembly, it is convenient to connect the hard aluminum bar to the connection terminals and output poles of the high-voltage control element and the battery cell group, thereby reducing the probability of poor assembly of the hard aluminum bar due to multiple welding assemblies, improving production efficiency and battery quality, and helping to improve the stability of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0046] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0047] FIG2 is an exploded view of the structure of a battery provided in some embodiments of the present application;

[0048] FIG3 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0049] FIG4 is a partial enlarged view of point A in FIG3 ;

[0050] FIG5 is a second schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0051] FIG6 is a partial enlarged view of point B in FIG5 ;

[0052] FIG7 is a third schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

[0053] FIG8 is one of the structural schematic diagrams of the beam structure provided in some embodiments of the present application;

[0054] FIG9 is one of the partial structural schematic diagrams of the beam structure provided in some embodiments of the present application.

[0055] Reference numerals:

[0056] Vehicle 1, battery 10, motor 20, controller 30;

[0057] Box body 11, first box body 111, second box body 112;

[0058] Battery cell group 12, battery cell 121, output terminal 122;

[0059] Beam structure 13, mounting member 131, first mounting position 1310, main body 1311, bend 1312, leg 1313, expansion beam 132, second mounting position 1320, beam body 1321, first beam body 13211, flange 13212, second beam body 13213, reinforcement plate 1322, first portion 13221, reinforcement section 13222, support section 13223, second portion 13224;

[0060] High-voltage control element 14;

[0061] Output pole 15;

[0062] Duralumin bar 16. DETAILED DESCRIPTION

[0063] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0064] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0065] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0066] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0067] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0068] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0069] The battery cells mentioned in the embodiments of this application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application do not limit this. The battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0070] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or battery pack. A battery generally includes a casing that encloses one or more battery cells or multiple battery modules. The casing can reduce the impact of liquids or other foreign matter on the charging or discharging process of the battery cells.

[0071] A battery cell includes a casing, an electrode assembly, and an electrolyte. The casing is used to hold the electrode assembly and the electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as the positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet consists of a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The negative current collector uncoated with the negative active material layer protrudes from the negative current collector coated with the negative active material layer. The negative current collector uncoated with the negative active material layer serves as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon, silicon, or other materials. To ensure that high currents can pass without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together.

[0072] The material of the separator may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a wound structure or a laminated structure, but the present invention is not limited thereto.

[0073] New energy vehicles have experienced rapid growth in recent years. Within the electric vehicle sector, power batteries, as the power source, play an irreplaceable and important role. A battery consists of a housing and multiple cells housed within it. As a core component in new energy vehicles, batteries have high requirements for both safety and cycle life.

[0074] In general batteries, the mounting plate of the high-voltage control element (S-BOX) is welded and assembled on the box body, and the connection terminals of the battery cell group are installed on the expansion beam through the output pole. The expansion beam is also welded and assembled on the box body. The two parts are connected by a hard aluminum bar. Because the expansion beam and the mounting plate are welded and assembled to the battery box body respectively, there will be assembly errors during the welding process. The superposition of deviations caused by multiple welding connections can easily lead to the inability to align the subsequent hard aluminum bar assembly and connection, resulting in poor assembly of the hard aluminum bar and reduced production efficiency.

[0075] Based on the above considerations, in order to solve the problem that the mounting plate and expansion beam of the existing high-voltage control element are welded multiple times, which easily leads to poor assembly of the hard aluminum bar, the present application designs a beam structure of a battery, including a mounting part and an expansion beam, the mounting part is provided with a first mounting position for installing the high-voltage control element; the expansion beam is provided with a second mounting position, the second mounting position is used to install the connecting terminal of the high-voltage control element and the battery cell group, and at least part of the expansion beam is connected to the mounting part as an integral part.

[0076] In the beam structure of a battery of this structure, the mounting piece and at least part of the expansion beam are connected as an integral piece so that the relative position of the first mounting position on the mounting piece and the second mounting position on the expansion beam is fixed. In subsequent assembly, it is convenient for the hard aluminum bar to connect to the connection terminals of the high-voltage control element and the battery cell group, thereby reducing the probability of poor assembly of the hard aluminum bar due to multiple welding assemblies and improving production efficiency and product quality.

[0077] The batteries disclosed in the embodiments of this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power supply system comprising the battery thermal management system disclosed in this application and batteries can be used to form such electrical devices. This helps expand the scope of application of the battery thermal management system and reduces the difficulty of assembling the battery thermal management system.

[0078] The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0079] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device according to an embodiment of the present application.

[0080] As shown in Figure 1, it is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 20, a controller 30 and a battery 10 can be provided inside the vehicle 1. The controller 30 is used to control the battery 10 to supply power to the motor 20. For example, a battery 10 can be provided at the bottom, front or rear of the vehicle 1. The battery 10 can be used to power the vehicle 1. For example, the battery 10 can be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements of the vehicle 1 during startup, navigation and operation. In another embodiment of the present application, the battery 10 can not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0081] In order to meet different power requirements, the battery 10 may include a plurality of battery cells 121 , wherein the plurality of battery cells 121 may be connected in series, in parallel, or in hybrid to form a battery cell group, where hybrid refers to a mixture of series and parallel connections.

[0082] FIG2 is an exploded view of the structure of a battery 10 according to one embodiment of the present application. The battery 10 includes a housing 11 and a plurality of battery cells 121, which are intended to be housed within the housing 11. The housing 11 provides assembly space for the battery cells 121 and can have various structures. In some embodiments, the housing 11 can include a first housing body 111 and a second housing body 112, which overlap each other and together define an assembly space for accommodating the battery cells 121. The second housing body 112 can be a hollow structure with one end open. The first housing body 111 can be a plate-like structure, with the first housing body 111 overlapping the open side of the second housing body 112, so that the first and second housing bodies 111, 112 jointly define an assembly space. Alternatively, the first and second housing bodies 111, 112 can each be a hollow structure with one end open, with the open side of the first housing body 111 overlapping the open side of the second housing body 112. Of course, the box body 11 formed by the first box body 111 and the second box body 112 can be in various shapes, such as a cylinder, a cuboid, etc.

[0083] In the battery 10, the multiple battery cells 121 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to a combination of series and parallel connections within the multiple battery cells 121. The multiple battery cells 121 can be directly connected in series, in parallel, or in a hybrid configuration, and then the entire structure formed by the multiple battery cells 121 is housed within the housing 11. Alternatively, the battery 10 can be constructed by first connecting the multiple battery cells 121 in series, in parallel, or in a hybrid configuration to form a battery module. The multiple battery modules are then connected in series, in parallel, or in a hybrid configuration to form a single structure, which is then housed within the housing 11. The battery 10 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 121.

[0084] Please refer to Figure 3, which is a schematic diagram of a partial structure of a battery 10 provided in some embodiments of the present application. The battery 10 includes multiple rows of battery cells 121. The multiple rows of battery cells 121 are arranged along a first direction X, and each row of battery cells 121 includes multiple battery cells 121 arranged along a second direction Y. The first direction X and the second direction Y are the length and width directions of the housing 11, respectively, and the first direction X and the second direction Y are perpendicular to each other.

[0085] Each battery cell 121 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 121 can be cylindrical, flat, rectangular, or in other shapes. For example, in FIG3 , the battery cell 121 is in the shape of a rectangular parallelepiped.

[0086] Please refer to Figures 3 to 7 , according to some embodiments of the present application, the present application provides a battery 10 , which may include a box 11 , a beam structure 13 , a high-voltage control element 14 , an output pole 15 and a battery cell group 12 .

[0087] The box body 11 can refer to the above technical solution and will not be described in detail here.

[0088] 8 and 9 , according to some embodiments of the present application, the present application further provides a beam structure 13 of a battery 10 , which can be installed in a box body 11 and welded to the box body 11 . The beam structure 13 can include a mounting member 131 and an expansion beam 132 .

[0089] The mounting member 131 may be provided with a first mounting position 1310 for mounting the high-voltage control element 14 .

[0090] The high-voltage control element 14 can be an integrated high-voltage control box, or it can be composed of multiple electrical components, such as fuses, resistors, high-voltage relays, and PCBAs (Printed Circuit Board Assembly), mounted on the beam structure 13. In this embodiment, the first mounting position 1310 can be provided with multiple mounting holes, and the multiple electrical components of the high-voltage control element 14 can be mounted in the multiple mounting holes of the first mounting position 1310 to be fixedly connected to the mounting member 131.

[0091] The expansion beam 132 may be provided with a second mounting position 1320 , and the second mounting position 1320 may be used to mount a connection terminal of the battery cell group 12 .

[0092] In this embodiment, the battery cell group 12 is installed in the box body 11, and can be installed on the side of the expansion beam 132 facing away from the mounting member 131, and abutted against the expansion beam 132. The battery cell group 12 can be composed of multiple battery cell groups 12. The battery cell 121 will generate heat and expand during operation, and the expansion beam 132 can effectively resist the expansion force generated by the battery cell 121.

[0093] The output pole 15 may be installed at the second installation position 1320 , and the connection terminal of the battery cell group 12 may be electrically connected to the high-voltage control element 14 through the output pole 15 .

[0094] The connection terminals of the battery cell group 12 may include an output terminal 122 and an input terminal of the battery cell group 12. The output terminal 122 and the input terminal are respectively provided on the electrode terminals of the two battery cells 121 at the two ends of the battery cell group 12. The output terminal 122 and the input terminal can be used to electrically connect the battery cell group 12 to the outside world. In this embodiment, the output terminal 122 and the input terminal of the battery cell group 12 are arranged near the expansion beam 132 and extend to the second mounting position 1320, so that the output terminal 122 and the input terminal of the battery cell group 12 can be electrically connected to the high-voltage control element 14 through the output pole 15.

[0095] Please refer to Figure 8. It can be understood that at least two second mounting positions 1320 can be provided on the beam structure 13, and at least two output poles 15 can be provided. The two output poles 15 are correspondingly installed in the two second mounting positions 1320, and the two output poles 15 are respectively used to connect to the output end 122 and the input end of the battery cell group 12.

[0096] Specifically, please refer to Figures 3 and 4. The battery 10 may also include a hard aluminum bar 16, which is a hard aluminum connector. The hard aluminum bar 16 can be connected between the output pole 15 and the high-voltage control element 14. Taking the output end 122 of the battery cell group 12 as an example, one end of the hard aluminum bar 16 is fixedly connected to the fuse of the high-voltage control element 14, and the other end of the hard aluminum bar 16 is fixedly connected to the output end 122 of the battery cell group 12 and the output pole 15 by bolts, so that the output end 122 of the battery cell group 12 is electrically connected to the high-voltage control element 14.

[0097] At least a portion of the expansion beam 132 may be connected to the mounting member 131 as an integral piece.

[0098] In this embodiment, at least a portion of the expansion beam 132 can be connected to the mounting member 131 as an integral part, so that the mounting member 131 and the expansion beam 132 are formed into one piece. During actual production, the mounting member 131 and the expansion beam 132 are formed into an integrated beam structure 13 and then installed in the box body 11, thereby reducing the error generated when the expansion beam 132 and the mounting member 131 are respectively welded to the box body 11.

[0099] Specifically, in this embodiment, at least a portion of the expansion beam 132 and the mounting member 131 can be provided as an integral piece made of the same material and manufactured by integral molding during the production process. For example, they can be manufactured by stamping and cutting a whole piece of sheet metal.

[0100] In another embodiment, the expansion beam 132 and the mounting member 131 can also be made of different materials. For example, the expansion beam 132 can be made of metal, and the mounting member 131 can be made of plastic. The mounting member 131 and at least part of the expansion beam 132 can be made into an integral part through one-piece injection molding.

[0101] In actual implementation, the mounting member 131 and at least part of the expansion beam 132 are made into one piece, and then the mounting member 131 and the expansion beam 132 are installed together in the box body 11. Even if an error occurs during the welding process, the relative position of the first mounting position 1310 on the mounting member 131 and the second mounting position 1320 on the expansion beam 132 is stable and not prone to deformation. After the high-voltage control element 14 and the output pole 15 are respectively installed in the first mounting position 1310 and the second mounting position 1320, the relative position between the two is stable, which facilitates the subsequent connection of the hard aluminum bar 16.

[0102] According to the beam structure 13 of the embodiment of the present application, the mounting member 131 and at least part of the expansion beam 132 are connected as an integral part, so that the relative positions of the first mounting position 1310 on the mounting member 131 and the second mounting position 1320 on the expansion beam 132 are fixed. In the subsequent assembly, it is convenient for the hard aluminum bar 16 to connect to the connection terminals of the high-voltage control element 14 and the battery cell group 12, thereby reducing the probability of poor assembly of the hard aluminum bar 16 due to multiple welding assemblies, thereby improving production efficiency and product quality.

[0103] According to the battery 10 of the embodiment of the present application, the mounting member 131 and at least part of the expansion beam 132 are connected as an integral part, so that the relative positions of the first mounting position 1310 on the mounting member 131 and the second mounting position 1320 on the expansion beam 132 are fixed. In the subsequent assembly, it is convenient for the hard aluminum bar 16 to connect the connection terminals of the high-voltage control element 14 and the battery cell group 12, thereby reducing the probability of poor assembly of the hard aluminum bar 16 due to multiple welding assemblies, thereby improving production efficiency and the quality of the battery 10.

[0104] 8 and 9 , according to some embodiments of the present application, the expansion beam 132 may include a beam body 1321 and a reinforcement plate 1322 .

[0105] The beam body 1321 may have a cavity, the second mounting position 1320 may be provided on the beam body 1321, and the reinforcing plate 1322 may be provided in the cavity and connected to the beam body 1321; wherein, one of the beam body 1321 and the reinforcing plate 1322 may be connected to the mounting member 131 as a whole.

[0106] In this embodiment, the expansion beam 132 may include a beam body 1321. The beam body 1321 may have a cavity structure to facilitate energy absorption by the expansion beam 132 and enhance structural strength. The second mounting position 1320 may be located within the beam body 1321, ensuring structural stability and preventing deformation, while ensuring a relatively accurate mounting position. A reinforcement plate 1322 may be located within the cavity and connected to the beam body 1321. The placement of the reinforcement plate 1322 within the cavity enhances the overall structural strength of the expansion beam 132, thereby better supporting the expansion force of the battery cell 121.

[0107] Among them, one of the beam body 1321 and the reinforcement plate 1322 can be connected to the mounting part 131 as a whole. By connecting any one of the beam body 1321 and the reinforcement plate 1322 to the mounting part 131 as a whole, the mounting part 131 and the expansion beam 132 can be integrated, which is convenient for subsequent assembly processes. The specific connection method can be referred to the subsequent embodiments.

[0108] According to the beam structure 13 of the embodiment of the present application, the structural strength of the expansion beam 132 is improved by providing a reinforcing plate 1322, and the reinforcing plate 1322 and one of the beam body 1321 are connected to the mounting member 131 as a whole to reduce the probability of misalignment between the first mounting position 1310 and the second mounting position 1320 due to multiple welding.

[0109] Please refer to Figure 8, according to some embodiments of the present application, the beam body 1321 may include a first beam body 13211 and a second beam body 13213, the first beam body 13211 is arranged on a side close to the mounting member 131 relative to the second beam body 13213, and the upper parts of the first beam body 13211 and the second beam body 13213 can be connected and jointly define a cavity with an open lower end.

[0110] In this embodiment, the beam body 1321 is configured as a first beam body 13211 and a second beam body 13213, so that the reinforcing plate 1322 can be installed in the cavity and fixedly connected to the first beam body 13211 and the second beam body 13213. The first beam body 13211 is located on the side of the second beam body 13213 closer to the mounting member 131, and the second beam body 13213 is used to abut against the battery cell group 12. The upper portions of the first beam body 13211 and the second beam body 13213 are bent toward each other and welded together, thereby fixing the first beam body 13211 and the second beam body 13213 together and defining a cavity with an open lower end.

[0111] The first portion 13221 of the reinforcing plate 1322 is located in the cavity and connected to the first beam 13211 and the second beam 13213 . The second portion 13224 of the reinforcing plate 1322 extends from the lower end of the cavity to be connected to the mounting member 131 as an integral piece.

[0112] In this embodiment, the reinforcing plate 1322 may include a first part 13221 and a second part 13224. The first part 13221 can be installed in the cavity and connected to the first beam body 13211 and the second beam body 13213, so that the first part 13221 is supported between the first beam body 13211 and the second beam body 13213, thereby strengthening the structural strength of the expansion beam 132. The second part 13224 of the reinforcing plate 1322 extends from the lower end of the cavity and extends toward the direction close to the mounting member 131 to be connected to the mounting member 131 as an integral part, thereby integrating the mounting member 131 with the expansion beam 132. Because the structure of the reinforcing plate 1322 is relatively simple, the difficulty of integrating the reinforcing plate 1322 with the mounting member 131 can be reduced, thereby reducing production costs.

[0113] According to the beam structure 13 of the embodiment of the present application, the first beam body 13211 and the second beam body 13213 are provided to facilitate the assembly of the beam body 1321 and the reinforcing plate 1322. The structure of the reinforcing plate 1322 is simple, and the second part 13224 of the reinforcing plate 1322 is provided to be connected to the mounting member 131 as a whole, which simplifies production and processing and reduces production costs.

[0114] Please refer to Figures 8 and 9, especially Figure 9. According to some embodiments of the present application, the reinforcement plate 1322 may include a plurality of reinforcement segments 13222 and support segments 13223 distributed along the up and down directions, and two adjacent reinforcement segments 13222 may be respectively connected to the first beam body 13211 and the second beam body 13213, and a support segment 13223 may be connected between two adjacent reinforcement segments 13222, and the support segment 13223 located at the lower end may be connected to the second part 13224.

[0115] In this embodiment, the reinforcing plate 1322 may include a plurality of reinforcing sections 13222 and a supporting section 13223, wherein the plurality of reinforcing sections 13222 are distributed in the up-down direction, and two adjacent reinforcing sections 13222 are connected to the first beam body 13211 and the second beam body 13213 respectively. Specifically, the reinforcing section 13222 may be welded to the first beam body 13211 or the second beam body 13213 so that the reinforcing plate 1322 is connected to the first beam body 13211 and the second beam body 13213 as a whole. body; multiple support segments 13223 can be distributed in the up and down directions, and the support segments 13223 are connected between two adjacent reinforcement segments 13222, so that the support segments 13223 are supported between the first beam body 13211 and the second beam body 13213, so that multiple cavities with a frame structure are formed between the first beam body 13211, the second beam body 13213, the reinforcement segments 13222 and the support segments 13223, and the structural stability of the frame structure is stronger, thereby playing a role in strengthening the overall structural strength of the expansion beam 132.

[0116] Among them, the support segment 13223 located at the lowest end can be connected to the second part 13224. In this embodiment, in order to ensure the rationality and strength of the overall structural design, the lowest one of the multiple reinforcement segments 13222 is connected to the second beam body 13213, so that one end of the support segment 13223 located at the lowest end is connected to the reinforcement segment 13222 at the lowest end, and the other end is connected to the second part 13224.

[0117] According to the beam structure 13 of the embodiment of the present application, a plurality of reinforcing sections 13222 and supporting sections 13223 are provided so that the reinforcing plate 1322 is supported between the first beam body 13211 and the second beam body 13213 and a plurality of frame structures are formed to improve the structural strength of the expansion beam 132.

[0118] Please refer to Figure 8 , according to some embodiments of the present application, the lower end of the first beam 13211 may be provided with a flange 13212 extending in a direction close to the mounting member 131 , and the flange 13212 may be connected to the second portion 13224 .

[0119] In this embodiment, the lower end of the first beam body 13211 can be provided with a flange 13212 extending in a direction close to the mounting member 131, and the flange 13212 is located on the upper side of the second part 13224 and is attached to the second part 13224. By connecting the flange 13212 to the second part 13224, the connection strength between the first beam body 13211 and the reinforcing plate 1322 is improved, thereby improving the structural strength of the entire expansion beam 132.

[0120] Please refer to FIG. 8 , according to some embodiments of the present application, the second portion 13224 is provided with a plurality of mounting holes, and the flange 13212 is provided with a plurality of avoidance grooves at positions corresponding to the plurality of mounting holes.

[0121] In this embodiment, the second portion 13224 may be provided with a plurality of mounting holes, which may be spaced apart along the length of the expansion beam 132. During subsequent assembly, self-clinching studs may be installed in the mounting holes, and a plurality of avoidance grooves may be provided on the flange 13212 at positions corresponding to the plurality of mounting holes to avoid the self-clinching studs. The self-clinching studs are provided to facilitate the installation of components such as the BMS (Battery Management System) 10 and the BMU (Battery Management Unit).

[0122] Please refer to Figure 8. According to some embodiments of the present application, the upper end of the first beam body 13211 may be provided with a first groove, and the upper end of the second beam body 13213 may be provided with a second groove. The first groove and the second groove may define a second installation position 1320.

[0123] In this embodiment, the output pole 15 may include a mounting base and a threaded hole. To facilitate assembly of the output pole 15, a first groove may be provided at the upper end of the first beam 13211, and a second groove may be provided at the upper end of the second beam 13213. The first and second grooves together define a second mounting position 1320, so that the mounting base of the output pole 15 can be installed in the second mounting position 1320. Through holes may also be provided on both sides of the first groove so that the mounting base of the output pole 15 can be fixed to the first beam 13211 via bolts.

[0124] In actual implementation, the output end 122 of the battery cell group 12 can be bent downward to connect with the mounting seat of the output pole 15, and one end of the hard aluminum bar 16 can be extended into the mounting seat. Bolts are passed through the hard aluminum bar 16 and the output end 122 of the battery cell group 12 in sequence and connected in the threaded holes to realize the connection between the output end 122 of the battery cell 121 and the hard aluminum bar 16.

[0125] Referring to FIG. 8 , according to some embodiments of the present application, the first beam 13211 may be provided with a concave-convex structure.

[0126] In this embodiment, the concave-convex structure of the first beam body 13211 is arranged between the flange 13212 and the upper part of the first beam body 13211, and the shape of the concave-convex structure is determined according to the simulation design. The concave-convex structure can be made by stamping or mold forming. By setting the concave-convex structure on the first beam body 13211, the structural strength of the first beam body 13211 is increased, and the ability of the expansion beam 132 to bear the expansion force is improved.

[0127] Please refer to Figure 8. In some embodiments, the side of the second beam body 13213 may also be provided with an extension section extending in a direction away from the mounting member 131. The extension section is used to be connected to the side wall of the box body 11 to increase the connection strength between the expansion beam 132 and the box body 11 and enhance the overall structural strength.

[0128] 8 and 9 , according to some embodiments of the present application, the mounting member 131 may include a main body 1311 , a bending portion 1312 and legs 1313 .

[0129] The first mounting position 1310 can be provided on the main board body 1311, one end of the bending portion 1312 can be connected to the side of the main board body 1311 by bending, and the other end of the bending portion 1312 can be connected to the expansion beam 132 as an integral part; the support leg 1313 is connected to the side of the main board body 1311, and the support leg 1313 is used to connect to the box body 11 of the battery 10.

[0130] The main plate 1311 is provided, and the first mounting position 1310 is positioned on the main plate 1311 to facilitate assembly of the various components of the high-voltage control element 14. One end of the bent portion 1312 can be bent and connected to the side of the main plate 1311, so that the other end of the bent portion 1312 can be connected to the reinforcing plate 1322 of the expansion beam 132 to form an integral part.

[0131] The leg 1313 is connected to the side of the main body 1311. The leg 1313 can be made by cutting and bending sheet metal. The leg 1313 can be used to connect to the box body 11 of the battery 10. Specifically, it can be connected by welding so that part of the mounting member 131 is fixedly connected to the box body 11.

[0132] Please refer to Figures 8 and 9. According to some embodiments of the present application, the bending portion 1312 can be bent downward from the main plate body 1311 toward one side of the expansion beam 132, the upper end of the support leg 1313 is connected to the main plate body 1311, and the lower end of the support leg 1313 is used to connect to the box body 11 of the battery 10.

[0133] In this embodiment, the bending portion 1312 is bent downward and the support leg 1313 is disposed on the lower side of the main board body 1311 so that the main board body 1311 is separated from the case body 11 of the battery 10. During the assembly process of the high-voltage control element 14, components such as cable ties and rivet studs may be used. By separating the main board body 1311 from the case body 11 of the battery 10, the high-voltage control element 14 is installed on the main board body 1311 through the assembly hole, thereby improving production efficiency.

[0134] According to some embodiments of the present application, the present application further provides an electrical device, comprising the battery 10 of any of the above solutions, and the battery 10 is used to provide electrical energy to the electrical device.

[0135] The power-consuming device may be any of the aforementioned devices or systems using the battery 10 .

[0136] According to some embodiments of the present application, referring to FIG. 7 to FIG. 9 , the present application provides a beam structure 13 of a battery 10 . The beam structure 13 may include a mounting member 131 and an expansion beam 132 .

[0137] The mounting member 131 may include a main plate 1311, a bent portion 1312, and a leg 1313. The main plate 1311 is provided with a first mounting position 1310, and the main plate 1311 is provided with a plurality of mounting holes in the first mounting position 1310 for mounting the high-voltage control element 14. The bent portion 1312 is connected to a side of the main plate 1311 facing the expansion beam 132 and is bent downward from the side of the main plate 1311 toward the expansion beam 132. The leg 1313 is connected to a side of the main plate 1311 away from the expansion beam 132, with the upper end of the leg 1313 connected to the main plate 1311, and the lower end of the leg 1313 can be welded to the housing 11 for secure connection.

[0138] The expansion beam 132 may include a beam body 1321 and a reinforcing plate 1322. The beam body 1321 may include a first beam body 13211 and a second beam body 13213. The first beam body 13211 is arranged on the side of the second beam body 13213 close to the mounting member 131. The upper part of the first beam body 13211 and the upper part of the second beam body 13213 are bent and welded in a direction approaching each other, so that the first beam body 13211 and the second beam body 13213 jointly define a cavity with an open lower end. The reinforcing plate 1322 includes a first part 13221 and a second part 13224 that are connected. The first part 13221 is arranged in the cavity, and the second part 13224 extends from the opening at the lower end of the cavity to be connected to the bent portion 1312 as an integral part, and the second part 13224 is also used to be welded to the box body 11. The lower end of the first beam body 13211 is provided with a flange 13212 extending in a direction close to the mounting member 131. The flange 13212 is located on the upper surface of the second part 13224 and is welded to the second part 13224.

[0139] The first part 13221 includes multiple reinforcement segments 13222 and multiple support segments 13223 distributed along the up and down directions. Two adjacent reinforcement segments 13222 are respectively adhered to and welded to the first beam body 13211 and the second beam body 13213. A support segment 13223 is connected between two adjacent reinforcement segments 13222, among which the support segment 13223 located at the lower end is connected to the second part 13224.

[0140] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0141] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A beam structure of a battery, characterized in that: include: A mounting member, wherein the mounting member is provided with a first mounting position for mounting a high-voltage control element; An expansion beam is provided with a second mounting position, wherein the second mounting position is used to mount a connecting terminal of a battery cell group, and at least a portion of the expansion beam is connected to the mounting member as an integral part.

2. The beam structure of a battery according to claim 1, characterized in that: The expansion beam comprises: A beam body, wherein the beam body has a cavity, and the second mounting position is arranged on the beam body; A reinforcing plate, the reinforcing plate being disposed in the cavity and connected to the beam body; Wherein, one of the beam body and the reinforcing plate is connected to the mounting member as a whole.

3. The beam structure of a battery according to claim 2, characterized in that: The beam body includes a first beam body and a second beam body, the first beam body is arranged on a side close to the mounting member relative to the second beam body, the upper parts of the first beam body and the second beam body are connected, and together define the cavity with an open lower end, the first part of the reinforcing plate is located in the cavity and connected to the first beam body and the second beam body, and the second part of the reinforcing plate extends from the lower end of the cavity to be connected to the mounting member as an integral part.

4. The beam structure of the battery according to claim 3, characterized in that: The first part includes a plurality of reinforcement segments and support segments distributed along the up-down direction, two adjacent reinforcement segments are respectively connected to the first beam body and the second beam body, the support segment is connected between two adjacent reinforcement segments, and the support segment located at the lowest end is connected to the second part.

5. The beam structure of the battery according to claims 3-4, characterized in that: The lower end of the first beam body is provided with a flange extending in a direction close to the mounting member, and the flange is connected to the second part.

6. The beam structure of a battery according to claim 5, characterized in that: The second portion is provided with a plurality of mounting holes, and the flange is provided with a plurality of avoidance grooves at positions corresponding to the plurality of mounting holes.

7. The beam structure of a battery according to claims 3-6, characterized in that: A first groove is provided at the upper end of the first beam body, and a second groove is provided at the upper end of the second beam body. The first groove and the second groove define the second installation position.

8. The beam structure of the battery according to claims 3-7, characterized in that: The first beam body is provided with a concave-convex structure.

9. The beam structure of a battery according to any one of claims 1 to 8, characterized in that: The mounting member comprises: A main board body, wherein the first mounting position is arranged on the main board body; A bending portion, one end of which is connected to the side of the main body by bending, and the other end of which is connected to the expansion beam as an integral part; A leg is connected to the side of the main body, and the leg is used to connect to the box of the battery.

10. The beam structure of a battery according to claim 9, characterized in that: The bending portion is bent downward from the main board body toward one side of the expansion beam, the upper end of the leg is connected to the main board body, and the lower end of the leg is used to be connected to the box body of the battery.

11. A battery, characterized in that: include: Box; The beam structure according to any one of claims 1 to 10, installed in the box; A high-voltage control element is installed at the first installation position; An output pole is installed at the second installation position; A battery cell group is installed in the box, and a connection terminal of the battery cell group is electrically connected to the high-voltage control element through the output pole.

12. An electrical device, characterized in that: include: The battery as claimed in claim 11, wherein the battery is used to power the electrical device.

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