Circuit board sampling structure, battery module, battery pack and power consumption device

Abstract

This application discloses a circuit board sampling structure (1), a battery module (10), a battery pack (100), and a power consumption device (1000). The circuit board sampling structure (1) includes a circuit board (11), a bus bar (12), and an insertion member (13), in which a connection arm (111) extends from an edge of the circuit board (11), at least one insertion hole (121) is provided in the bus bar (12), at least one insertion part (131) is provided on one side of the insertion member (13), and the insertion part (131) is inserted into the insertion hole (121), and one end of the connection arm (111) remote from the circuit board (11) is interposed between the insertion member (13) and the bus bar (12). This can improve the assembly efficiency between the circuit board (11) and the bus bar (12), and reduce the manufacturing cost of the circuit board sampling structure (1).

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on February 7, 2022, bearing application number 202220260030.6, and entitled "Circuit board sampling structure, battery module, battery pack and power consumption device," the entire contents of which are incorporated herein by reference.

[0002] TECHNICAL FIELD Embodiments of the present application relate to the field of batteries, and in particular to circuit board sampling structures, battery modules, battery packs, and power consuming devices. [Background technology]

[0003] Energy conservation and the reduction of pollutant emissions are key to the sustainable development of the automotive industry, and electric vehicles, with their advantages in energy conservation and environmental protection, have become an important component of this industry. Battery module technology is a key element in the development of electric vehicles.

[0004] Currently, the assembly efficiency of battery modules is low. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above problems, the present application provides a circuit board sampling structure, a battery module, a battery pack and a power consuming device, which can alleviate the problem of low assembly efficiency of battery modules. [Means for solving the problem]

[0006] According to a first aspect, the present application provides a circuit board sampling structure, the circuit board sampling structure including a circuit board, a bus bar, and an insertion member, a connection arm extending from an edge of the circuit board, at least one insertion hole provided in the bus bar, at least one insertion portion provided on one side of the insertion member, the insertion portion inserted into the insertion hole, and one end of the connection arm remote from the circuit board interposed between the insertion member and the bus bar.

[0007] In the technical solutions of the embodiments of the present application, the insertion member can be used to temporarily fix the connection arm and the bus bar before they are electrically connected, thereby reducing the possibility of relative movement between the connection arm and the bus bar during the electrical connection process and improving the assembly efficiency between the circuit board and the bus bar. Furthermore, the connection arm and the bus bar are electrically connected after the end of the connection arm remote from the circuit board is clamped between the insertion member and the bus bar, thereby realizing the electrical connection between the connection arm and the bus bar without using a sampling connection sheet, thereby improving the assembly efficiency and reducing the manufacturing costs of the circuit board sampling structure. At the same time, the insertion member can clamp the end of the connection arm remote from the circuit board between the insertion member and the bus bar, thereby improving the structural strength after the connection between the connection arm and the bus bar.

[0008] In some embodiments, the insert is captively connected to the bus bar, which can improve the structural strength of the insert after connection with the bus bar, while also reducing the likelihood of the insert becoming detached from the bus bar.

[0009] In some embodiments, an engaging portion is bent at one end of the insert portion away from the insert member, and the engaging portion engages with a surface of the bus bar facing away from the connecting arm. By engaging the engaging portion with a surface of the bus bar facing away from the connecting arm, the possibility of the insert portion becoming detached from the insert hole can be reduced, and the insert member can have a simple structure and be easily manufactured.

[0010] In some embodiments, the number of the insertion holes is plural, and at least one insertion part is inserted into each insertion hole. By providing plural insertion holes, plural insertion parts can be inserted, thereby increasing the structural strength after connection between the insertion member and the bus bar.

[0011] In some embodiments, the number of mounting holes is three, and the three mounting holes are arranged in a triangular pattern. By arranging the three mounting holes in a triangular pattern, the end of the connecting arm remote from the circuit board can be positioned between the three mounting holes, thereby reducing the possibility of the end of the connecting arm remote from the circuit board rotating relative to the bus bar.

[0012] In some embodiments, the ends of the connection arms that are remote from the circuit board are located within an area defined by the mounting holes, and the edges of the connection arms abut against the mounting portions, thereby reducing the possibility that the ends of the connection arms that are remote from the circuit board will rotate relative to the bus bars.

[0013] In some embodiments, the connecting arm is welded to the bus bar, which not only can realize an electrical connection between the connecting arm and the bus bar, but also makes the structural strength of the connecting arm and the bus bar relatively high after the connection.

[0014] In some embodiments, at least some of the connecting arms are curved such that when the circuit board sampling structure is shaken, the curved portions of the connecting arms can deform, thereby reducing the likelihood of damage to the circuit board sampling structure due to mutual tension between the circuit board and the bus bar.

[0015] In some embodiments, a notch is provided in an edge of the circuit board, and the connecting arms extend from within the notch to outside the notch. The provision of the notch can reduce the material of the circuit board, thereby reducing the manufacturing cost of the circuit board sampling structure, and the connecting arms can extend from within the notch to outside the notch, thereby reducing the space occupied by the connecting arms.

[0016] In some embodiments, the inner walls forming the notch include a first inner wall, the first inner wall being perpendicular to the extending direction of the edge, the connecting arm extending from the first inner wall, the connecting arm being bent in a direction perpendicular to the edge, and the connecting arm being curved after being bent. The first inner wall being perpendicular to the extending direction of the edge, the connecting arm extending from the first inner wall and being bent in a direction perpendicular to the edge, i.e., the connecting arm being parallel to the first inner wall after being bent, thereby improving the visual effect of the circuit board sampling structure.

[0017] According to a second aspect, the present application provides a battery module, the battery module including battery cells and any one of the circuit board sampling structures according to the first aspect, wherein the bus bars of the circuit board sampling structure are connected to the battery cells. By connecting the battery cells to the circuit board sampling structure, the assembly efficiency of the circuit board sampling structure can be improved, thereby improving the assembly efficiency of the battery module.

[0018] According to a third aspect, the present application provides a battery pack including the battery module according to the second aspect. By installing the battery module in the battery pack, the assembly efficiency of the battery module can be improved, thereby improving the assembly efficiency of the battery pack.

[0019] According to a fourth aspect, the present application provides a power consumption device including the battery pack according to the third aspect. By installing the battery pack in the power consumption device, the assembly efficiency of the battery pack can be improved, and the assembly efficiency of the power consumption device can be improved.

[0020] The above description is merely a summary of the technical solution of the present application. In order to more clearly understand the technical solution of the present application, which can be implemented according to the content of the specification, and to make the above and other objectives, features and advantages of the present application more clearly comprehensible, the following particularly cites specific embodiments of the present application for description.

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are only used to illustrate the purpose of the preferred embodiments and are not to be considered as limitations on the present application. Note that the same drawing numbers refer to the same elements in all drawings. In the drawings, [Brief explanation of the drawings]

[0022] [Figure 1] 1A and 1B are structural schematic diagrams of a circuit board sampling structure (first angle) according to some embodiments of the present application. [Figure 2] 1 is a structural schematic diagram of a circuit board sampling structure (second angle) according to some embodiments of the present application. FIG. [Figure 3] FIG. 1 is an enlarged schematic view of area A in a circuit board sampling structure (second angle) according to some embodiments of the present application. [Figure 4] 1 is a structural schematic diagram of a circuit board sampling structure (third angle) according to some embodiments of the present application. FIG. [Figure 5] FIG. 10 is an enlarged schematic view of region B in a circuit board sampling structure (third angle) according to some embodiments of the present application. [Figure 6] FIG. 10 is a structural schematic diagram of a circuit board sampling structure (fourth angle) in an exploded state according to some embodiments of the present application. [Figure 7] FIG. 10 is an enlarged schematic view of region C in an exploded state of a circuit board sampling structure (fourth angle) according to some embodiments of the present application. [Figure 8] 1 is a structural schematic diagram of a battery module in an exploded state according to some embodiments of the present application; [Figure 9]1 is a structural schematic diagram of a battery pack according to some embodiments of the present application; [Figure 10] 1 is a structural schematic diagram of a power consumption device according to some embodiments of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0023] The following detailed description will be given of the embodiments of the technical solution of the present application in conjunction with the drawings. The following embodiments are only used to clearly explain the technical solution of the present application, and are therefore only used as examples, and cannot limit the protection scope of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art of this application, and the terms used herein are only for describing specific embodiments and are not intended to limit this application, and the terms "comprises" and "having" and any variations thereof in the specification and claims of this application and the description of the drawings above are intended to cover a non-exclusive "comprise."

[0025] In the description of the embodiments of the present application, the technical terms "first," "second," etc. are merely used to distinguish between different objects, and should not be understood as indicating or suggesting the relative importance or implicitly specifying the number, specific order, or hierarchical relationship of the indicated technical features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0026] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. Appearances of this phrase in various locations throughout the specification do not necessarily all refer to the same embodiment, nor are they mutually exclusive, independent, or alternative embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments of this application, the term "and / or" merely describes the relationship between related objects and indicates that three relationships may exist. For example, A and / or B may represent three cases: A, a combination of A and B, and B. In addition, the character " / " in this specification generally indicates that the related objects before and after it are in an "or" relationship.

[0028] In describing the embodiments of the present application, the term "plurality" refers to two or more (including two); similarly, "sets" refers to two or more (including two sets); and "plurality" refers to two or more (including two).

[0029] In describing the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" are orientations or positional relationships shown in the drawings, and are intended merely to facilitate and simplify the description of the embodiments of the present application. They do not indicate or imply that the devices or elements referred to have a specific orientation or must be configured and operated in a specific orientation, and therefore should not be understood as limitations on the embodiments of the present application.

[0030] In the description of the embodiments of the present application, unless otherwise clearly defined or limited, the technical terms "attached," "connected," "connected," "fixed," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art may understand the specific meanings of the above terms in the embodiments of the present application according to specific circumstances.

[0031] At present, in view of the development of the market situation, the application of power batteries is becoming more and more widespread. Power batteries are not only used in energy storage power systems such as hydroelectric, thermal, wind and solar power plants, but also widely used in electric transportation devices such as electric bicycles, electric motorcycles, electric cars, and military equipment and aerospace, etc. With the continuous expansion of the application fields of power batteries, the market demand for them is also continuously increasing.

[0032] The inventors realized that a battery module has bus bars and a circuit board, the bus bars are used to connect to battery cells, and connection arms of the circuit board are connected to the bus bars, allowing sampling and detection of information such as the voltage and temperature of the battery cells connected to the bus bars via the connection arms and bus bars. However, when the connection arms of the circuit board are electrically connected to the bus bars, relative displacement is likely to occur between them, which reduces the assembly efficiency of the battery module. Here, the electrical connection allows the transmission of electrical signals between the connection arms and the bus bars.

[0033] To alleviate the problem of low assembly efficiency of battery modules, the applicant has discovered through research that before connecting the connection arm to the bus bar, the connection arm can be first restricted to a position on the bus bar that corresponds to the position when the connection arm is connected, thereby preventing relative displacement between the connection arm and the bus bar when they are electrically connected, and improving assembly efficiency of the battery module.

[0034] Based on the above considerations, in order to alleviate the problem of low battery module assembly efficiency, the inventors conducted extensive research and designed a circuit board sampling structure in which an insert member restricts the connection arm to a position on the bus bar that corresponds to when the connection arm is connected to the bus bar. As a result, when the connection arm attempts to displace relative to the bus bar during the process of electrically connecting the connection arm to the bus bar, the insert member can restrict the movement of the connection arm relative to the bus bar.

[0035]

[0014] According to some embodiments of the present application, with reference to Figure 1 and Figures 2-8, Figure 1 is a structural schematic diagram of a circuit board sampling structure (first angle) according to some embodiments of the present application, Figure 2 is a structural schematic diagram of a circuit board sampling structure (second angle) according to some embodiments of the present application, Figure 3 is an enlarged schematic diagram of region A in the circuit board sampling structure (second angle) according to some embodiments of the present application, Figure 4 is a structural schematic diagram of a circuit board sampling structure (third angle) according to some embodiments of the present application, Figure 5 is an enlarged schematic diagram of region B in the circuit board sampling structure (third angle) according to some embodiments of the present application, Figure 6 is a structural schematic diagram of a circuit board sampling structure (fourth angle) according to some embodiments of the present application in an exploded state, Figure 7 is an enlarged schematic diagram of region C in the circuit board sampling structure (fourth angle) according to some embodiments of the present application, and Figure 8 is a structural schematic diagram of a battery module in an exploded state according to some embodiments of the present application. The present application provides a circuit board sampling structure 1. The circuit board sampling structure 1 includes a circuit board 11, a bus bar 12, and an insert member 13. A connecting arm 111 extends from the edge of the circuit board 11, the bus bar 12 is provided with at least one insert hole 121, and at least one insert portion 131 is provided on one side of the insert member 13, which is inserted into the insert hole 121. One end of the connecting arm 111 remote from the circuit board 11 is interposed between the insert member 13 and the bus bar 12.

[0036] A sampling detection circuit is installed in the circuit board 11, and the sampling detection circuit has sampling detection functions such as voltage sampling and temperature sampling.

[0037] The circuit board 11 may be linear and extend along a first direction as shown in FIG. 1, may be cross-shaped, or may have other shapes, and is not specifically limited here.

[0038] A connection arm 111 extends from an edge of the circuit board 11, a circuit is installed in the connection arm 111, and this circuit communicates with a sampling and detection circuit in the circuit board 11. The edge of the circuit board 11 may be an edge extending along a first direction as shown in FIG. 1, or may be another edge. The circuit board 11 described above may have multiple connection arms 111 extending from one edge, or multiple connection arms 111 extending from each of multiple edges.

[0039] The bus bars 12 are used to realize series-parallel connections between the multiple battery cells 2 in the battery module 10.

[0040] At least one insertion hole 121 is provided in the bus bar 12, and the shape of the insertion hole 121 may be rectangular, triangular, trapezoidal, or any other shape.

[0041] The insertion portion 131 of the insertion member 13 is inserted into the insertion hole 121 of the bus bar 12, so that the end of the connection arm 111 away from the circuit board 11 can be clamped between the insertion member 13 and the bus bar 12, thereby reducing the possibility of relative displacement occurring when the connection arm 111 and the bus bar 12 are connected.

[0042] The insert member 13 and the insert portion 131 on one side thereof may be made of a metal sheet such as aluminum, copper, or nickel, thereby improving the strength of the insert member 13 and the insert portion 131 on one side thereof and reducing the possibility of the insert member 13 and the insert portion 131 breaking.

[0043] The insert portion 131 may extend obliquely from one side of the insert member 13 or may extend vertically.

[0044] After one end of the connection arm 111 away from the circuit board 11 is clamped between the insertion member 13 and the bus bar 12, the connection arm 111 and the bus bar 12 are electrically connected. For example, electrical contact points that can come into contact with each other are provided on the mutually contacting surfaces of the connection arm 111 and the bus bar 12, and when the one end of the connection arm 111 away from the circuit board 11 is clamped between the insertion member 13 and the bus bar 12, the electrical contact points of the connection arm 111 and the bus bar 12 come into contact, thereby achieving an electrical connection between the connection arm 111 and the bus bar 12. Alternatively, after one end of the connection arm 111 away from the circuit board 11 is clamped between the insertion member 13 and the bus bar 12, the connection arm 111 is welded to the bus bar 12, thereby achieving an electrical connection between the connection arm 111 and the bus bar 12.

[0045] 1 , in one embodiment, four connection arms 111 are provided on both sides of the circuit board 11 of the circuit board sampling structure 1 in a first direction, and one end of each connection arm 111 remote from the circuit board 11 is clamped between one insertion member 13 and one bus bar 12. In practice, first, a local portion of the insertion portion 131 is inserted into the insertion hole 121, then the end of the connection arm 111 remote from the circuit board 11 is placed between the insertion member 13 and the bus bar 12, and the edge of the end of the connection arm 111 remote from the circuit board 11 is abutted against the insertion portion 131, and then the insertion portion 131 is continued to be inserted, and finally, the two opposing surfaces of the end of the connection arm 111 remote from the circuit board 11 are attached to the insertion member 13 and the bus bar 12, respectively. After each bus bar 12 is connected to a battery cell 2, eight battery cells 2 are connected to the circuit board 11, and the eight battery cells 2 are connected in series or in parallel with each other. At the same time, the sampling detection circuit in the circuit board 11 can perform sampling detection on information such as the voltage and temperature of the battery cells 2.

[0046] In this embodiment, the insertion member 13 can be used to temporarily fix the connection arm 111 and the bus bar 12 before they are electrically connected, thereby reducing the possibility of relative movement between the connection arm 111 and the bus bar 12 during the process of electrically connecting them, thereby improving the assembly efficiency between the circuit board 11 and the bus bar 12. After the end of the connection arm 111 away from the circuit board 11 is clamped between the insertion member 13 and the bus bar 12, the connection arm 111 and the bus bar 12 are electrically connected, thereby realizing the electrical connection between the connection arm 111 and the bus bar 12 without using a sampling connection sheet, thereby improving the assembly efficiency and reducing the manufacturing cost of the circuit board sampling structure 1. At the same time, the insertion member 13 can clamp the end of the connection arm 111 away from the circuit board 11 between the insertion member 13 and the bus bar 12, thereby improving the structural strength after the connection between the connection arm 111 and the bus bar 12.

[0047] According to some embodiments of the present application, and with reference to FIGS. 1-7, the insert portion 131 is matingly connected to the bus bar 12 .

[0048] The insertion portion 131 is connected to the bus bar 12 in an engaging manner, that is, a first engaging portion is provided on the insertion portion 131, and a second engaging portion that matches the first engaging portion is provided on the bus bar 12, and the engagement between the insertion portion 131 and the bus bar 12 can be achieved after the first engaging portion and the second engaging portion are fitted together and engaged.

[0049] The first and second engaging portions can be fitted together to achieve engagement, and can be separated from each other to achieve separation between the insertion portion 131 and the bus bar 12 .

[0050] In this embodiment, the engagement connection between the insertion portion 131 and the bus bar 12 can improve the structural strength after the insertion portion 131 and the bus bar 12 are connected, and at the same time, reduce the possibility of the insertion member 13 coming off the bus bar 12.

[0051] According to some embodiments of the present application, referring to Figures 4 and 5, an engagement portion 1311 is bent at one end of the insertion portion 131 away from the insertion member 13, and the engagement portion 1311 engages with a surface away from the connection arm 111 of the bus bar 12.

[0052] An engaging portion 1311 is bent at one end of the insertion portion 131 away from the insertion member 13, and the engaging portion 1311 engages with the surface of the busbar 12 facing away from the connecting arm 111. That is, the insertion portion 131 can extend from one surface of the busbar 12 through the insertion hole 121 to position the engaging portion 1311 on the other side of the busbar 12, and the engaging portion 1311 engages with the surface of the busbar 12 facing away from the connecting arm 111. The distance between the engaging portion 1311 and the insertion member 13 is equal to or greater than the thickness of the busbar 12, and is equal to the thickness of the busbar 12 to improve the structural strength after the connection between the insertion portion 131 and the busbar 12.

[0053] The engaging portion 1311 may be a part of the insertion portion 131. For example, the insertion portion 131 extends vertically from one side of the insert member 13, and the engaging portion 1311 is formed by bending one end of the insertion portion 131 away from the insert member 13. In practice, an assembly tool is provided on one side of the busbar 12 away from the connection arm 111, a recess is formed on the surface of the assembly tool facing the busbar 12, and the end of the insertion portion 131 away from the insert member 13 passes through the insertion hole 121 from one side of the busbar 12 and is positioned on the other side of the busbar 12, abuts against the recess in the assembly tool, and is then bent to form the engaging portion 1311. Here, the recess may have a concave arc shape.

[0054] In this embodiment, the engaging portion 1311 engages with a surface that is away from the connecting arm 111 of the busbar 12, thereby reducing the possibility that the insertion portion 131 will come off the insertion hole 121, and the structure of the insertion member 13 is simple and easy to manufacture.

[0055] According to some embodiments of the present application, referring to FIGS. 5 and 7, the number of the insertion holes 121 is plural, and at least one insertion portion 131 is inserted into each insertion hole 121.

[0056] The number of the insertion holes 121 is plural, and the plural insertion holes 121 may include two insertion holes 121 spaced apart from each other, or may include two insertion holes 121 provided adjacent to each other.

[0057] At least one insertion part 131 is inserted into one insertion hole 121 , that is, one insertion part 131 or a plurality of insertion parts 131 are inserted into one insertion hole 121 .

[0058] In this embodiment, by providing a plurality of insertion holes 121, a plurality of insertion portions 131 can be inserted, thereby increasing the structural strength after connection between the insertion member 13 and the bus bar 12.

[0059] According to some embodiments of the present application, referring to FIGS. 5 and 7, the number of the insertion holes 121 is three, and the three insertion holes 121 are distributed in a triangular shape.

[0060] In use, the end of the connecting arm 111 remote from the circuit board 11 is positioned between the three insertion holes 121 .

[0061] In this embodiment, the three insertion holes 121 are distributed in a triangular shape, so that the end of the connecting arm 111 away from the circuit board 11 can be positioned between the three insertion holes 121, thereby reducing the possibility of the end of the connecting arm 111 away from the circuit board 11 rotating relative to the bus bar 12.

[0062] According to some embodiments of the present application, referring to FIG. 7 , one end of the connection arm 111 away from the circuit board 11 is located within an area defined by a plurality of insertion holes 121, and the edge of the connection arm 111 abuts against the insertion portion 131, thereby reducing the possibility that the one end of the connection arm 111 away from the circuit board 11 will rotate relative to the bus bar 12.

[0063] According to some embodiments of the present application, the connecting arm 111 is welded to the bus bar 12 .

[0064] The welding between the connection arm 111 and the bus bar 12 may be laser welding or ultrasonic welding. After the connection arm 111 is welded to the bus bar 12, an electrical connection is established between the connection arm 111 and the bus bar 12, thereby forming a signal sampling path between the bus bar 12, the connection arm 111 and the circuit board 11.

[0065] In this embodiment, the welding connection not only realizes the electrical connection between the connection arm 111 and the bus bar 12, but also makes the structural strength after the connection between the connection arm 111 and the bus bar 12 relatively high.

[0066] According to some embodiments of the present application, at least some of the connecting arms 111 are curved.

[0067] At least a portion of the connecting arm 111 is curved, that is, the entire connecting arm 111 or a portion of the connecting arm 111 is curved.

[0068] At least some of the connecting arms 111 are curved, i.e., at least some of the connecting arms 111 are not straight. For example, some of the connecting arms 111 are bent, and some of the connecting arms 111 are wavy.

[0069] The curved connecting arm 111 is deformable, where the deformation includes, but is not limited to, partial extension, partial shortening, and partial protrusion.

[0070] In this embodiment, at least a portion of the connecting arm 111 is curved, so that when the circuit board sampling structure 1 is shaken, the curved portion of the connecting arm 111 can deform, thereby reducing the possibility of damage to the circuit board sampling structure 1 due to mutual pulling between the circuit board 11 and the bus bar 12.

[0071] According to some embodiments of the present application, referring to FIGS. 1-7, a notch 112 is provided at an edge of the circuit board 11, and the connecting arm 111 extends from within the notch 112 to outside the notch 112.

[0072] The notch 112 may be formed by cutting the edge of the circuit board 11 or by other methods.

[0073] In this embodiment, the provision of the notch 112 can reduce the material of the circuit board 11, thereby reducing the manufacturing cost of the circuit board sampling structure 1, and the connecting arm 111 extends from within the notch 112 to outside the notch 112, thereby reducing the space occupied by the connecting arm 111.

[0074] According to some embodiments of the present application, referring to Figures 2 and 3, the inner wall forming the notch 112 includes a first inner wall 1121, the first inner wall 1121 is perpendicular to the extension direction of the edge, the connecting arm 111 extends from the first inner wall 1121, the connecting arm 111 is bent in a direction perpendicular to the edge, and the bent connecting arm 111 has a curved shape.

[0075] For example, the notch 112 is located on a first edge extending along a first direction of the circuit board 11, and the first inner wall 1121 is perpendicular to the first edge, i.e., the first inner wall 1121 is perpendicular to the first direction.

[0076] Here, the connecting arm 111 may be originally a part of the circuit board 11. For example, the circuit board 11 extends along a first direction, and the circuit board 11 has a plurality of regions along both sides of the first direction, each region being formed by fitting together a first region line, a second region line, a third region line, and some edges, where the first region line and the second region line are both perpendicular to the first direction. After cutting along the third region line and the second region line, the connecting arm 111 connected to the circuit board 11 is formed. Here, the cutting of the third region line and the second region line can be formed by pressing. In this manner, the connection between the connecting arm 111 and the circuit board 11 is natural and the possibility of breakage is low.

[0077] In this embodiment, the first inner wall 1121 is perpendicular to the extension direction of the edge, and the connecting arm 111 extends from the first inner wall 1121 and is bent in a direction perpendicular to the edge, i.e., the connecting arm 111 after being bent is parallel to the first inner wall 1121, thereby improving the visual effect of the circuit board sampling structure 1.

[0078] According to some embodiments of the present application, referring to FIG. 8 , the present application further provides a battery module 10, which includes a battery cell 2 and a circuit board sampling structure 1 described in any of the above solutions, and the busbar 12 of the circuit board sampling structure 1 is connected to the battery cell 2.

[0079] The battery cells 2 may be secondary or primary batteries, including but not limited to lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries, and may be cylindrical, flat, rectangular, or have other shapes.

[0080] The battery module 10 may include a plurality of battery cells 2, and electrical connection between the plurality of battery cells 2 is achieved by a plurality of bus bars 12 of the circuit board sampling structure 1.

[0081] The battery module 10 may be used in a power consuming device such as, but not limited to, a vehicle, a ship, or an aircraft, and the battery module 10 can be used to configure a power supply system for the power consuming device.

[0082] In this embodiment, by connecting the battery cells 2 to the circuit board sampling structure 1, the assembly efficiency of the circuit board sampling structure 1 can be improved, and thus the assembly efficiency of the battery module 10 can be improved.

[0083] In some embodiments of the present application, the battery module 10 may further include a first case, in which the battery cells 2 and the circuit board sampling structure 1 are installed in a cavity of the first case, thereby allowing the battery cells 2 and the circuit board sampling structure 1 to be protected by the first case.

[0084] According to some embodiments of the present application, referring to FIG. 9, the present application further provides a battery pack 100 including the battery module 10 according to any one of the above solutions.

[0085] The battery pack 100 may be used in a power consuming device such as, but not limited to, a vehicle, a ship, or an aircraft, and the battery pack 100 can be used to configure a power supply system for the power consuming device.

[0086] In this embodiment, by installing the battery module 10 in the battery pack 100, the assembly efficiency of the battery module 10 is improved, and thus the assembly efficiency of the battery pack 100 can be improved.

[0087] In some embodiments of the present application, referring to FIG. 9, the battery pack 100 may further include a second case 20, in which a plurality of battery modules 10 are installed in a cavity.

[0088] According to some embodiments of the present application, referring to FIG. 10, the present application further provides a power consumption device 1000 including the battery pack 100 according to any one of the above solutions.

[0089] The power consumption device 1000 may be used in, 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 vehicle, a boat, a spacecraft, etc. Here, the electric toy may include a stationary or mobile electric toy, such as a game console, an electric toy vehicle, an electric toy boat, and an electric toy airplane, and the spacecraft may include an airplane, a rocket, a spacecraft, a spaceship, etc.

[0090] In this embodiment, by installing the battery pack 100 in the power consuming device 1000, the assembly efficiency of the battery pack 100 can be improved, and the assembly efficiency of the power consuming device 1000 can also be improved.

[0091] In some embodiments of the present application, referring to FIG. 10 , the power consumption device 1000 is a vehicle, and the vehicle 1000 may be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, a range-extender vehicle, etc. A battery pack 100 is installed inside the vehicle 1000, and the battery pack 100 may be installed at the bottom, head, or tail of the vehicle 1000. The battery pack 100 may be used to supply power to the vehicle 1000, for example, the battery pack 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may further include a controller and a motor, and the controller is used to control the battery pack 100 and supply power to the motor, for example, for operating power consumption needs during startup, navigation, and driving of the vehicle 1000.

[0092] In some embodiments of the present application, the battery pack 100 can be used not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, providing driving power to the vehicle 1000 in place of, or in place of, fuel or natural gas.

[0093] In a specific embodiment, referring to FIGS. 1-7, the circuit board sampling structure 1 comprises: The circuit board 11 is a rectangular plate extending along a first direction, and has four notches 112 on both sides of the circuit board 11 along the first direction, and four connection arms 111 correspondingly positioned in the four notches 112, and the connection arms 111 are bent in a direction perpendicular to the first direction and have a curved shape after being bent. Here, the connection arms 111 are formed by pressing the edges of a part of the circuit board 11; Eight bus bars 12, each of which has three insertion holes 121 arranged in a triangular pattern; The eight insert members 13 each have three insert portions 131 arranged on one side thereof in a triangular shape, the three insert portions 131 of each insert member 13 being inserted into the three insert holes 121 on one bus bar 12 correspondingly, and the insert portions 131 passing through the insert holes 121 are bent to form engagement portions 1311, and the engagement portions 1311 include the eight insert members 13 abutting on the surface of the bus bar 12 that is away from the connecting arm 111; Here, the end of each connecting arm 111 away from the circuit board 11 is clamped between the connecting member 13 and the bus bar 12 which are connected to each other, and the edge of the end of each connecting arm 111 away from the circuit board 11 is located within the three connecting portions 131 of the corresponding connecting member 13 and abuts against the three connecting portions 131, and at the same time, the end of the connecting arm 111 away from the circuit board 11 and the bus bar 12 are welded together.

[0094] Finally, it should be noted that the above embodiments are merely for illustrating the technical solutions of the present application, and are not intended to limit the same. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications may still be made to the technical solutions described in the above embodiments, or equivalent substitutions may be made for some or all of the technical features therein. Such modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and should all be included in the scope of the claims and description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in the embodiments can be combined in any manner. The present application is not limited to the specific embodiments disclosed in the description, but includes all technical solutions included within the scope of the claims. [Explanation of symbols]

[0095] 1—circuit board sampling structure, 11—circuit board, 111—connecting arm, 112—notch, 1121—first inner wall, 12—bus bar, 121—insertion hole, 13—insertion member, 131—insertion portion, 1311—engagement portion, 2-battery cells, 10-battery module, 20-Second case, 100-battery pack, 1000 - Power consuming equipment.

Claims

1. 1. A circuit board sampling structure comprising: a circuit board having a connection arm extending from an edge of the circuit board; a bus bar having at least one insertion hole; an insert member, at least one insert portion provided on one side of the insert member, the insert portion being inserted into the insert hole, and one end of the connection arm remote from the circuit board being interposed between the insert member and the bus bar; The number of the insertion holes is plural, and at least one of the insertion portions is inserted into one of the insertion holes; A circuit board sampling structure, wherein one end of the connection arm away from the circuit board is located within an area defined by the plurality of insertion holes, and an edge of the connection arm abuts against the insertion portion.

2. The circuit board sampling structure of claim 1 , wherein the insertion portion is captively connected to the bus bar.

3. 3. The circuit board sampling structure according to claim 2, wherein an engaging portion is bent at one end of the insertion portion away from the insertion member, and the engaging portion is engaged with a surface of the bus bar that is away from the connection arm.

4. 4. The circuit board sampling structure according to claim 3, wherein the distance between the engaging portion and the insertion member is equal to or greater than the thickness of the bus bar.

5. 5. The circuit board sampling structure according to claim 1, wherein the number of the insertion holes is three, and the three insertion holes are distributed in a triangular shape.

6. The circuit board sampling structure of claim 1 , wherein the connecting arm is welded to the bus bar.

7. 7. The circuit board sampling structure of claim 1, wherein at least some of the connecting arms are curved.

8. 8. The circuit board sampling structure of claim 7, wherein a notch is provided in an edge of the circuit board, and the connecting arm extends from within the notch to outside the notch.

9. 9. The circuit board sampling structure of claim 8, wherein the inner wall forming the notch includes a first inner wall, the first inner wall being perpendicular to the extension direction of the edge portion, the connecting arm extending from the first inner wall, the connecting arm being bent in a direction perpendicular to the edge portion, and the connecting arm being curved after being bent.

10. A battery module, A battery cell; 10. A battery module comprising: a circuit board sampling structure according to claim 1; and wherein the bus bars of the circuit board sampling structure are connected to the battery cells.

11. The battery module includes: The battery module of claim 10 , further comprising a first case having a cavity within which the battery cells and the circuit board sampling structure are disposed.

12. A battery pack, A battery pack comprising the battery module according to claim 10 or 11.

13. The battery pack The battery pack according to claim 12 , further comprising a second case having a cavity in which the plurality of battery modules are placed.

14. A power consuming device, A power consuming device comprising the battery pack according to claim 12 or 13.

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