Insulating member and battery

Abstract

The utility model relates to battery technology field discloses an insulating part and battery, and the insulating part includes board main body, annular protruding and thickening portion, the board main body has first avoiding hole, the board main body has opposite first surface and second surface in first direction, the board main body has opposite first end line and second end line in second direction, the annular protruding is connected in the first surface, the thickening portion is connected in the first surface and is located the outside of annular protruding, the thickening portion and first end line interval arrangement, the utility model provides an insulating part through connecting thickening portion in first surface and interval arrangement thickening portion and first end line of board main body, realized the unequal thick setting of insulating part, can be on the basis that does not affect the welding of first positive terminal and busbar to ensure the smooth operation of welding operation, strengthens the overall structural strength of insulating part, reduces the quality risk and production cost in battery assembly process.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an insulating component and a battery. Background Technology

[0002] In the field of battery technology, in order to ensure the normal operation and safety of batteries, it is necessary to install an insulating component between the positive and negative terminals of the battery to achieve insulation between the positive and negative terminals.

[0003] Currently, a battery, battery pack, and electrical device are disclosed in patent publication number CN119315231A. The battery includes components such as a shell, a core, an elastic insulating base, an insulating component, a first terminal (positive terminal), and a second terminal (negative terminal). The elastic insulating base has a mounting groove and a mounting hole on the side facing away from the core, and the mounting hole is located inside the mounting groove. The first terminal is disposed in the mounting groove. The second terminal includes a limiting plate, a connecting post, and a current collector. The limiting plate is disposed inside the shell and located between the elastic insulating base and the core. The connecting post passes through the mounting hole. The current collector is located on the side of the first terminal away from the core. The insulating component is placed between the first terminal and the current collector to insulate the first terminal from the current collector. The side of the first terminal facing away from the core has a second connecting protrusion. However, the insulating component used in this patent has shortcomings. Since the second connecting protrusion of the first terminal needs to be welded to the busbar, in order to ensure the smooth progress of the welding, the position of the insulating component near the second connecting protrusion must not be higher than the second connecting protrusion. To meet this requirement, the patent sets the overall thickness of the insulating component to be relatively thin. In the actual battery assembly process, such a thin insulating component is easily damaged due to insufficient structural strength, which increases the quality risk and production cost in the battery assembly process. Utility Model Content

[0004] Aimed at solving at least one of the technical problems existing in the prior art, this utility model aims to provide an insulating component and a battery having the insulating component. The insulating component can enhance the overall structural strength of the insulating component and reduce the quality risks and production costs in the battery assembly process without affecting the welding of the positive terminal and the busbar to ensure the smooth progress of the welding operation.

[0005] To achieve the above objectives, in a first aspect, the present invention provides an insulating component, comprising a plate body, an annular protrusion, and a thickened portion; the thickness direction of the plate body is a first direction, the first direction and a second direction are perpendicular, the plate body has a first clearance hole penetrating along the first direction, and the plate body has a first surface and a second surface opposite to each other in the first direction; the annular protrusion is connected to the first surface and defines a receiving groove with the first surface, the first clearance hole being located inside the receiving groove; the thickened portion is connected to the first surface and located outside the annular protrusion; wherein, the first direction and the second direction intersect to form a first auxiliary plane, the first auxiliary plane being perpendicular to a third direction; along the third direction, the plate body has a first orthographic projection on the first auxiliary plane, and the thickened portion has a second orthographic projection on the first auxiliary plane; along the second direction, the first orthographic projection has a first end line and a second end line opposite to each other on the first auxiliary plane, the second orthographic projection and the first end line being spaced apart on the first auxiliary plane.

[0006] In some embodiments, the thickened portion is connected to the outer wall surface of the annular protrusion.

[0007] In some embodiments, along the third direction, the annular protrusion forms a third orthographic projection on the first auxiliary plane; along the second direction, the third orthographic projection has opposing third and fourth end lines on the first auxiliary plane, the third end line being closer to the first end line and the fourth end line being farther from the first end line; on the first auxiliary plane, along the second direction, the third end line is located between the second orthographic projection and the first end line.

[0008] In some embodiments, the insulating component further includes a positioning part connected to the second surface. This allows the positioning part to be engaged with the slot of the first terminal during the battery cap assembly process, achieving precise alignment between the insulating component and the first terminal. This prevents the insulating component from becoming misaligned during assembly, ensuring accurate relative positioning between the insulating component and other components. This improves the precision of battery assembly, helps reduce defective products caused by assembly deviations, increases the yield rate, and lowers production costs.

[0009] In some embodiments, the sides of the plate body include a first side, a second side, a third side, and a fourth side. The second side is connected to one end of the first side, the third side is connected to the end of the first side away from the second side and is disposed opposite to the second side, and one end of the fourth side is connected to the end of the second side away from the first side, and the other end is connected to the end of the third side away from the first side. The first side is an arc surface, the second side is a plane, and the third side is a plane. By setting the first side of the insulating plate body as an arc surface and the second and third sides as planes, the problem of unstable posture during the feeding of existing irregular circular insulating parts can be overcome.

[0010] In some embodiments, the first direction and the second auxiliary plane are perpendicular; along the first direction, the orthographic projection of the first side surface onto the second auxiliary plane is arc-shaped.

[0011] In some embodiments, the second and third sides are arranged parallel to each other; the fourth side is planar, and the second and fourth sides are perpendicular to each other. This allows the insulating component to achieve a tighter and more stable fit with the inner walls of the material feeding slot; the parallel contact between the two sides of the insulating component and the inner walls of the material feeding slot increases the contact area between the insulating component and the material feeding slot, thus dispersing the pressure during material feeding and further reducing the shaking and displacement of the insulating component within the material feeding slot.

[0012] In some embodiments, the side of the plate body further includes a first arc transition surface and a second arc transition surface, the second side is connected to the fourth side through the first arc transition surface, and the third side is connected to the fourth side through the second arc transition surface.

[0013] Secondly, this utility model also provides a battery, the battery including an insulating component according to any one of the above claims, and further including a housing, a core, an elastic insulating seat, a first terminal, and a second terminal; the housing has an opening located at one end of the housing in the first direction; the core is disposed inside the housing; the outer peripheral surface of the elastic insulating seat abuts against and seals the opening with the inner wall surface of the housing, the side of the elastic insulating seat facing away from the core is provided with a mounting groove and a mounting hole, the mounting hole penetrating the elastic insulating seat along the first direction, the mounting groove is annular, and the mounting hole is located inside the mounting groove; the first terminal is annular plate-shaped, the first terminal is disposed in the mounting groove, and the first terminal is electrically connected to the core; the side of the first terminal facing away from the core is provided with a second connecting protrusion, the side of the second connecting protrusion facing away from the core being a third surface; the second terminal includes a limiting plate, a connecting post, and a current collector, the limiting plate, the connecting post, and the current collector... The plates are connected along the first direction. The limiting plate is disposed inside the housing and located between the elastic insulating seat and the winding core. The side of the limiting plate facing away from the winding core is in contact with the elastic insulating seat, and the side of the limiting plate facing away from the elastic insulating seat is electrically connected to the winding core. The connecting post passes through the mounting hole. The current collector is located on the side of the first terminal away from the winding core. The plate body is placed between the first terminal and the current collector to insulate the first terminal and the current collector. The side of the plate body facing away from the winding core is the first surface. The end line of the plate body near the second connecting protrusion in the second direction is the first end. The current collector is located in the receiving groove. The connecting post passes through the first clearance hole. Along the first direction, the first surface is not higher than the third surface. On the first auxiliary plane, along the second direction, the first end line is close to the orthographic projection of the second connecting protrusion, and the second end line is away from the orthographic projection of the second connecting protrusion.

[0014] In some embodiments, the insulating member further includes a positioning part connected to the second surface, and the first terminal is provided with a positioning groove, into which the positioning part can be engaged.

[0015] Compared with the prior art, the insulating component of this utility model embodiment has the following advantages: By connecting the thickened portion to the first surface and spacing the thickened portion from the first end line of the plate body, the area outside the annular protrusion of the plate body can be divided into a thickened area with the thickened portion and a non-thickened area (i.e., the interval area between the thickened portion and the first end) without the thickened portion. Therefore, by setting the non-thickened area to a thickness no greater than the second connecting protrusion of the first positive terminal, when the second connecting protrusion of the first positive terminal needs to be welded to the busbar, the thinner non-thickened area ensures that the insulating component will not obstruct the welding process, allowing the second connecting protrusion to be smoothly welded to the busbar. Simultaneously, by setting the thickened area... The thicker second connecting protrusion, which is higher than that of the first positive terminal, enhances the overall structural strength of the insulating component. This allows the insulating component provided by this invention to better withstand external forces during battery assembly, making it less prone to damage during assembly operations. This reduces quality risks during battery assembly, minimizes rework and scrap due to insulating component damage, and lowers production costs. In summary, the insulating component provided by this invention achieves unequal thickness by connecting the thickened portion to the first surface and spacing the thickened portion from the first terminal line. This allows for enhanced overall structural strength of the insulating component without affecting the welding of the first positive terminal to the busbar, ensuring smooth welding operations, while reducing quality risks and production costs during battery assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an insulating component at a first angle, provided by an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the second structure of an insulating component at a second angle, provided by an embodiment of the present invention.

[0018] Figure 3 This is a front view of an insulating component provided in an embodiment of this utility model;

[0019] Figure 4 This is a top view of an insulating component provided in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of a battery provided in an embodiment of the present invention;

[0021] Figure 6 yes Figure 5 Enlarged view of point A;

[0022] Figure 7 This is a schematic diagram of the structure of the elastic insulating base provided in this embodiment of the utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the first terminal provided in an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the structure of the second terminal provided in an embodiment of the present invention.

[0025] In the figure, 1 is the insulating component; 11 is the main body of the plate; 12 is the annular protrusion; 13 is the thickened part; 14 is the positioning part; 111 is the first surface; 112 is the second surface; 113 is the first side surface; 114 is the second side surface; 115 is the third side surface; 116 is the fourth side surface; 117 is the first arc transition surface; 118 is the second arc transition surface; 121 is the receiving groove; and 1111 is the first clearance hole.

[0026] 2. Shell; 21. Opening;

[0027] 3. Roll core;

[0028] 4. Flexible insulating base; 41. Mounting groove; 42. Mounting hole; 43. Third connecting protrusion;

[0029] 5. First terminal; 51. First end plate; 52. Second end plate; 53. Connecting block; 54. Second connecting protrusion; 55. Positioning groove; 511. Third clearance hole; 521. Second clearance hole; 541. Third surface;

[0030] 6. Second terminal; 61. Limiting plate; 62. Connecting post; 63. Current collector; 631. Connecting hole; 632. First connecting protrusion;

[0031] 7. Sealing nails;

[0032] 100. First auxiliary plane; 101. First orthographic projection; 102. Second orthographic projection; 103. Third orthographic projection; 1011. First end line; 1012. Second end line; 1031. Third end line; 1032. Fourth end line;

[0033] 200. Second auxiliary plane;

[0034] Z, first direction; X, second direction; Y, third direction. Detailed Implementation

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0041] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0042] First aspect

[0043] like Figures 1-4 As shown, this utility model embodiment provides an insulating component 1, including a plate body 11, an annular protrusion 12, and a thickened portion 13.

[0044] The thickness direction of the plate body 11 is the first direction Z, which is perpendicular to the second direction X. The plate body 11 has a first clearance hole 1111 extending through the first direction Z. The plate body 11 has a first surface 111 and a second surface 112 opposite to each other in the first direction Z. An annular protrusion 12 is connected to the first surface 111 and defines a receiving groove 121 with the first surface 111. The first clearance hole 1111 is located inside the receiving groove 121. A thickened portion 13 is connected to the first surface 111 and is located outside the annular protrusion 12. The thickness direction Z... The first auxiliary plane 100 is formed by the intersection of the second direction X and the third direction Y. Along the third direction Y, the plate body 11 has a first orthographic projection 101 formed on the first auxiliary plane 100, and the thickened part 13 has a second orthographic projection 102 formed on the first auxiliary plane 100. Along the second direction X, the first orthographic projection 101 has a first end line 1011 and a second end line 1012 opposite to each other on the first auxiliary plane 100. The second orthographic projection 102 and the first end line 1011 are spaced apart on the first auxiliary plane 100.

[0045] Based on this technical solution, the insulating component 1 provided by this utility model, by connecting the thickened portion 13 to the first surface 111 and spacing the thickened portion 13 from the first end line 1011 of the plate body 11, can divide the area outside the annular protrusion 12 of the plate body 11 into a thickened area with the thickened portion 13 and a non-thickened area (i.e., the spaced area between the thickened portion 13 and the first end line 1011) without the thickened portion 13. Thus, by setting the non-thickened area to a thickness not exceeding that of the second connecting protrusion 54 of the first terminal 5, when the second connecting protrusion 54 of the first terminal 5 needs to be welded to the busbar, the non-thickened area can ensure that the insulating component 1 will not obstruct the welding process, allowing the second connecting protrusion 54 to be smoothly welded to the busbar. Simultaneously, by setting the thickened area to a thickness not exceeding that of the second connecting protrusion 54 of the first terminal 5, the insulating component 1 can ensure that the insulating component 1 will not obstruct the welding process. The insulation component 1 is made thicker than the second connecting protrusion 54 of the first terminal 5, thereby enhancing the overall structural strength of the insulation component 1. This allows the insulation component 1 provided by this invention to better withstand external forces during battery assembly, making it less prone to damage during assembly operations. This reduces the quality risks during battery assembly, minimizes rework and scrap due to damage to the insulation component 1, and lowers production costs. In summary, the insulation component 1 provided by this invention achieves unequal thickness by connecting the thickened portion 13 to the first surface 111 and spacing the thickened portion 13 from the first terminal line 1011. This allows for enhanced overall structural strength of the insulation component 1 without affecting the welding of the first terminal 5 to the busbar, ensuring smooth welding operations, and reducing quality risks and production costs during battery assembly.

[0046] It is understandable that, along the second direction X, the first orthographic projection 101 has a first end line 1011 and a second end line 1012 on the first auxiliary plane 100. This means that the first end line 1011 and the second end line 1012 are the boundary lines of the opposite ends of the first orthographic projection 101 in the second direction X, that is, the first end line 1011 and the second end line 1012 are the two boundary lines of the first orthographic projection 101 with the farthest distance in the second direction X. The second orthographic projection 102 and the first end line 1011 are spaced apart on the first auxiliary plane 100, meaning that the first end line 1011 and the second orthographic projection 102 are at a certain distance. Since the first end line is the boundary line of the first orthographic projection 101 in the second direction X, the first end line 1011 is also the position with the farthest distance between the first orthographic projection 101 and the second orthographic projection 102.

[0047] The thickened portion 13 is connected to the outer wall surface of the annular protrusion 12. The connection between the thickened portion 13 and the outer wall surface of the annular protrusion 12 makes the overall structure of the insulating component 1 more compact and integrated. The annular protrusion 12 itself can reinforce the main body 11 of the plate, and after the thickened portion 13 is connected to the annular protrusion 12, the structural strength of the insulating component 1 at the connection position between the annular region and the thickened portion 13 is further enhanced. In the process of battery assembly and subsequent use, in the face of possible external impacts, vibrations and other situations, this connection method between the thickened portion 13 and the annular protrusion 12 can disperse stress and avoid damage to the insulating component 1 due to uneven local stress, which helps to improve the structural stability of the insulating component 1 under complex working conditions. Meanwhile, after the thickened part 13 is connected to the outer wall of the annular protrusion 12, the small gaps that may originally exist between the thickened part 13 and the annular protrusion 12 can be reduced, and the structural strength can be further enhanced. Inside the battery, these small gaps may become accumulation sites for impurities such as dust and moisture, which may reduce the insulation performance of the insulator 1 or even cause short circuit faults. By eliminating or reducing such small gaps, the insulator 1 can better block current leakage, ensure effective insulation between the positive and negative terminals, and further improve the safety and reliability of the battery.

[0048] Optionally, the thickened portion 13 can be either a monolithic thickening or a reinforcing rib. Specifically, a monolithic thickening involves increasing the thickness of a specific area on the first surface 111 located outside the annular protrusion 12 in a comprehensive and integrated manner. A reinforcing rib is a strip-like or rib-like structure distributed in the area on the first surface 111 located outside the annular protrusion 12.

[0049] In this embodiment, the thickened portion 13 is an integral thickened portion. Specifically, the thickened portion 13 is semi-enclosed, and the inner wall surface of the thickened portion 13 is connected to the outer wall surface of the annular protrusion 12.

[0050] In this embodiment, the first direction Z, the second direction X, and the third direction Y are all perpendicular to each other. Specifically, the first direction Z is the thickness direction of the insulating member 1, and the second direction X is the length direction of the insulating member 1.

[0051] Understandably, in Figure 3 In the diagram, the dashed line between the second orthographic projection 102 and the first orthographic projection 101 is not the actual projection of the thickened part 13 and the plate body 11 onto the first auxiliary plane 100. Instead, it is an auxiliary line used to better understand and distinguish the orthographic projection of the thickened part 13 and the orthographic projection of the plate body 11 onto the first auxiliary plane 100.

[0052] See Figure 1 , Figure 3 and Figure 4Along the third direction Y, the annular protrusion 12 forms a third orthographic projection 103 on the first auxiliary plane 100; along the second direction X, the third orthographic projection 103 has opposing third end lines 1031 and fourth end lines 1032 on the first auxiliary plane 100, the third end line 1031 being closer to the first end line 1011, and the fourth end line 1032 being farther from the first end line 1011; on the first auxiliary plane 100, along the second direction X, the third end line 1031 is located between the second orthographic projection 102 and the first end line 1011. By placing the third end line 1031 of the annular protrusion 12 between the thickened portion 13 and the first end line 1011, the potential interference of the thickened portion 13 to the welding operation of the second connecting protrusion 54 of the first terminal 5 and the busbar can be avoided; during the welding process, the thickened portion 13 will not obstruct the effective docking of the second connecting protrusion 54 and the busbar due to improper positioning, ensuring unobstructed welding space.

[0053] The existing design for the insulating component 1 lacks a positioning design. As a result, during the battery cap assembly process, the insulating component 1 is prone to tilting due to the absence of a positioning structure to constrain it. This tilting not only causes the insulating component 1 to deviate from the preset standard but also further affects the installation accuracy of other components that it mates with, ultimately leading to poor assembly of the entire battery. These assembly defects increase the defect rate and raise production costs.

[0054] See Figure 2 and Figure 3 The insulating component 1 provided in this embodiment of the invention also includes a positioning part 14, which is connected to the second surface 112. By providing the positioning part 14 on the second surface 112 of the main body 11, the positioning part 14 can be engaged with the slot of the first terminal 5 during the battery cap assembly process, achieving precise alignment between the insulating component 1 and the first terminal 5. This prevents the insulating component 1 from becoming misaligned during assembly, ensuring accurate relative positioning between the insulating component 1 and other components, improving battery assembly precision, reducing defective products caused by assembly deviations, increasing yield, and lowering production costs.

[0055] In this embodiment, there are two positioning parts 14.

[0056] The existing solution uses an irregularly shaped circular insulating component 1. During production, when the insulating component 1 enters the material feeding stage, its irregular circular shape makes it impossible to maintain a fixed posture during movement within the conveying device. This results in an uncertain posture for the insulating component 1 upon reaching the assembly position, making it difficult to meet the precise posture requirements of automated assembly equipment. Therefore, under current process conditions, it is difficult to achieve automated assembly of such irregularly shaped circular insulating components 1 in battery production.

[0057] See Figure 1 and Figure 4 The side surface of the plate body 11 provided in this embodiment of the utility model includes a first side surface 113, a second side surface 114, a third side surface 115 and a fourth side surface 116. The second side surface 114 is connected to one end of the first side surface 113, the third side surface 115 is connected to the end of the first side surface 113 away from the second side surface 114 and is disposed opposite to the second side surface 114, and one end of the fourth side surface 116 is connected to the end of the second side surface 114 away from the first side surface 113 and the other end is connected to the end of the third side surface 115 away from the first side surface 113. The first side surface 113 is an arc surface, the second side surface 114 is a plane surface, and the third side surface 115 is a plane surface. By setting the main body 11 of the insulating component 1 to have a specific side structure, namely, the first side 113 is an arc surface, and the second side 114 and the third side 115 are flat surfaces, the problem of unstable posture of the existing irregular circular insulating component 1 during material feeding can be overcome. Specifically, during the feeding process, since the second side 114 and the third side 115 are two opposite sides, and both the second side 114 and the third side 115 are flat, the inner walls on both sides of the feeding slot can provide stable support and guidance for the second side 114 and the third side 115 respectively during the feeding process of the insulating component 1. This can prevent the insulating component 1 from tilting, rolling or deviating during the feeding process, so that the insulating component 1 can always maintain a stable and definite posture movement during the feeding process. In this way, the insulating component 1 can enter the assembly position with a definite posture, thereby meeting the requirements of automated assembly equipment for the precise posture of components and facilitating the automated assembly of the insulating component 1 in battery production.

[0058] The first direction Z is perpendicular to the second auxiliary plane 200. Along the first direction Z, the first side surface 113 is arc-shaped when projected onto the second auxiliary plane 200. When the insulating component 1 enters the feeding slot, the arc-shaped first side surface 113 can naturally guide the insulating component 1 into the correct feeding position and maintain the correct orientation throughout the movement. This precise guiding function helps to further improve the positioning accuracy of the insulating component 1 during feeding, reduce subsequent assembly problems caused by feeding direction deviations, and lay a more solid foundation for the automated assembly of the insulating component 1 in battery production. At the same time, the semi-circular first side surface 113 can also fit more closely to other components with arc or circular contours inside the battery, making full use of limited space, optimizing the layout of the internal structure of the battery, and improving the overall space utilization of the battery.

[0059] In this embodiment, the first side surface 113 is semi-circular in the orthographic projection of the second auxiliary plane 200.

[0060] In some other embodiments, the orthographic projection of the first side surface 113 onto the second auxiliary plane 200 may also be a superior arc shape (an arc shape larger than a semicircle) or a inferior arc shape (an arc shape smaller than a semicircle).

[0061] In this embodiment, the first auxiliary plane 100 is a vertical plane, and the second auxiliary plane 200 is a horizontal plane.

[0062] Preferably, the second side 114 and the third side 115 of the plate body 11 of this utility model are arranged in parallel. The parallel arrangement of the second side 114 and the third side 115 allows the insulating member 1 to achieve a tighter and more stable fit with the inner walls of both sides of the material feeding slot. The parallel contact between the two parallel sides of the insulating member 1 and the inner walls of both sides of the material feeding slot can increase the contact area between the insulating member 1 and the material feeding slot to disperse the pressure during the material feeding process, which helps to further reduce the shaking and displacement of the insulating member 1 in the material feeding slot.

[0063] Preferably, the fourth side 116 is planar, and the second side 114 is perpendicular to the fourth side 116. In the limited space inside the battery, the shape and structure of the insulating component 1 play a crucial role in space utilization efficiency. The parallel arrangement of the second side 114 and the third side 115, and the perpendicular arrangement of the fourth side 116 to the second side 114, allows the insulating component 1 to better adapt to diverse structural layouts inside the battery. For example, when other parallel or vertical components exist inside the battery, the insulating component 1 provided by this invention can be installed tightly against these components, making full use of corner and edge spaces to maximize the utilization of the battery's internal space.

[0064] Preferably, the side surface of the main body 11 further includes a first arc transition surface 117 and a second arc transition surface 118. The second side surface 114 is connected to the fourth side surface 116 through the first arc transition surface 117, and the third side surface 115 is connected to the fourth side surface 116 through the second arc transition surface 118. Connecting the second side surface 114 and the fourth side surface 116 through the first arc transition surface 117 and connecting the third side surface 115 and the fourth side surface 116 through the second arc transition surface 118 eliminates sharp edges between the connection points of the second side surface 114 and the fourth side surface 116, and between the third side surface 115 and the fourth side surface 116. During the feeding process of the insulating component 1, the arc transition surface allows the insulating component 1 to pass more smoothly, reducing feeding resistance caused by sharp edge collisions. Compared to the insulating component 1 without an arc transition surface, the feeding process is smoother, reducing jamming, helping to improve feeding speed, and further ensuring feeding efficiency. Meanwhile, the first arc transition surface 117 can disperse the stress at the connection position of the second side surface 114 and the fourth side surface 116, and the second arc transition surface 118 can disperse the stress at the connection position of the third side surface 115 and the fourth side surface 116, thereby reducing the risk of cracks or damage to the insulating component 1 due to stress concentration and improving the structural strength and durability of the insulating component 1.

[0065] Second aspect

[0066] See Figures 5-9 The present invention also provides a battery, which includes an insulating member 1 according to any one of the above claims, and further includes a housing 2, a core 3, an elastic insulating base 4, a first terminal 5, and a second terminal 6.

[0067] The housing 2 has an opening 21, which is located at one end of the housing 2 in the first direction Z; the core 3 is disposed inside the housing 2.

[0068] The outer peripheral surface of the elastic insulating seat 4 is in close contact with the inner wall surface of the housing 2 and the opening 21 is sealed. The side of the elastic insulating seat 4 facing away from the core 3 is provided with a mounting groove 41 and a mounting hole 42. The mounting hole 42 penetrates the elastic insulating seat 4 along the first direction Z. The mounting groove 41 is annular and the mounting hole 42 is located inside the mounting groove 41.

[0069] The first terminal 5 is in the shape of an annular plate and is located in the mounting groove 41. The first terminal 5 is electrically connected to the core 3. The side of the first terminal 5 facing away from the core 3 is provided with a second connecting protrusion 54. The first side 113 of the plate body 11 is in contact with the side of the second connecting protrusion 54 facing the plate body 11. The side of the second connecting protrusion 54 facing away from the core 3 is the third surface 541.

[0070] The second terminal 6 includes a limiting plate 61, a connecting post 62, and a current collector 63. The limiting plate 61, the connecting post 62, and the current collector 63 are connected along the first direction Z. The limiting plate 61 is disposed inside the housing 2 and located between the elastic insulating seat 4 and the core 3. The side of the limiting plate 61 facing away from the core 3 is in contact with the elastic insulating seat 4, and the side of the limiting plate 61 facing away from the elastic insulating seat 4 is electrically connected to the core 3. The connecting post 62 has a mounting hole 42. The current collector 63 is located on the side of the first terminal 5 away from the core 3.

[0071] The main body 11 is placed between the first terminal 5 and the current collector 63 to insulate the first terminal 5 and the current collector 63; the side of the main body 11 facing away from the core 3 is the first surface 111, the current collector 63 is located in the receiving groove 121, and the connecting post 62 passes through the first clearance hole 1111; along the first direction Z, the first surface 111 is not higher than the third surface 541.

[0072] On the first auxiliary plane 100, along the second direction X, the first end line 1011 is close to the orthographic projection of the second connecting protrusion 54, and the second end line 1012 is away from the orthographic projection of the second connecting protrusion 54.

[0073] In this invention, the material of the elastic insulating base 4 can be one of fluororubber, ethylene propylene rubber, butyl rubber, nitrile rubber, polypropylene modified rubber, chlorinated nitrile rubber, chloroprene rubber and isoprene rubber, or a rubber-containing composite. This invention does not limit the material of the elastic insulating base 4.

[0074] The battery also includes a sealing pin 7, which is press-fitted to the wall of the electrolyte injection hole for sealing. In practical applications, the electrolyte injection hole is used to inject electrolyte into the housing 2, and the function of the sealing pin 7 is to seal the electrolyte injection hole after the battery has been filled with electrolyte. Since the elastic insulating seat 4 is elastic, the sealing pin 7 can be connected to the electrolyte injection hole by press-fitting, which is convenient to assemble and has a good sealing effect.

[0075] In this embodiment, the second connecting protrusion 54 is arc-shaped, and the first side 113 of the insulating member 1 and the second connecting protrusion 54 are closely attached to the side of the insulating member 1.

[0076] In this utility model, the first terminal 5 is electrically connected to the positive electrode of the core 3, and the second terminal 6 is electrically connected to the negative electrode of the core 3. Both the first terminal 5 and the second terminal 6 are made of conductive materials. Specifically, the side of the limiting plate 61 facing away from the elastic insulating seat 4 is electrically connected to the core 3 through the first current collector, which is located inside the housing 2.

[0077] See Figures 5-8The first terminal 5 includes a first end plate 51, a second end plate 52, and a connecting block 53. The outer edge of the first end plate 51 is circular, and the second end plate 52 has a second clearance hole 521 extending in the first direction Z. The first end plate 51 and the second end plate 52 are connected by the connecting block 53, and a hollow area is defined between the first end plate 51, the second end plate 52, and the connecting block 53. The outer peripheral surface of the first end plate 51 abuts against the outer groove surface of the mounting groove 41, and the hole wall surface of the second clearance hole 521 abuts against the groove side surface of the mounting groove 41 near its center. That is, the first end plate 51 has a through hole extending in the first direction Z, the second end plate 52 is located in the through hole, and the connecting block 53 connects the outer peripheral surface of the second end plate 52 and the hole wall surface of the through hole. The outer peripheral surface of the first end plate 51 constitutes the outer peripheral surface of the first terminal 5, and the hole wall surface of the second clearance hole 521 constitutes the inner peripheral surface of the first terminal 5. The outer peripheral surface of the second end plate 52, the hole wall surface of the through hole, and the connecting block 53 are connected. The side of block 53 defines the aforementioned hollowed-out area; wherein, the hollowed-out area is set around the limiting plate 61; when the pressure inside the battery rises to the first preset internal pressure range, the limiting plate 61, together with the elastic insulating seat 4, is lifted away from the core 3 and at least part of the connecting block 53 is disconnected, the second end plate 52 is at least partially separated from the first end plate 51, the elastic insulating seat 4 breaks, and at least part of it flips out with the limiting plate 61 to the side of the first end plate 51 away from the core 3. In this type of battery structure, the elastic insulating seat 4 is flexible, and the setting of the hollowed-out area reduces the connection strength between the first end plate 51 and the second end plate 52. Its advantage is that when the pressure inside the battery rises to the first preset air pressure, the elastic insulating seat 4 will be torn by the limiting plate 61 under the action of air pressure. As a result, the range of the mounting hole 42 will be expanded, and the gas inside the battery can be quickly discharged from the torn area to achieve the purpose of rapid pressure relief. Based on this, the battery will not be cracked, and the battery explosion and fire can be avoided.

[0078] Preferably, the insulating member 1 shields the cut-out area. For example, the side of the insulating member 1 that is in contact with the first terminal 5 (i.e., the second surface 112) directly shields the cut-out area. This structure can prevent the electrolyte from entering the cut-out area when the battery is filled with electrolyte, thereby avoiding battery contamination.

[0079] The first terminal 5 is provided with a positioning groove 55, and the positioning part 14 can be inserted into the positioning groove 55. This invention provides the positioning part 14 on the second surface 112 of the main body 11, allowing the positioning part 14 to be inserted into the positioning groove 55 of the first terminal 5 during the battery cap assembly process. This prevents the insulating component 1 from becoming misaligned during assembly, improves the accuracy of battery assembly, helps reduce defective products caused by assembly deviations, increases the yield rate, and reduces production costs.

[0080] In this embodiment, a positioning groove 55 is defined between the first end plate 51, the second end plate 52 and the connecting block 53, that is, the above-mentioned hollowed-out area is the positioning groove 55.

[0081] The first end plate 51 of the first terminal 5 is provided with a third clearance hole 504 extending through the first direction X. The third clearance hole 504 is used to cooperate with the third connecting protrusion 43 of the elastic insulating seat 4.

[0082] See Figure 5 , Figure 6 and Figure 9 The length of the current collector 63 in the first direction Z is greater than the depth of the receiving groove 121. That is, at least part of the end of the current collector 63 away from the core 3 is exposed from the opening of the receiving groove 121. This facilitates the connection of the current collector 63 with external conductive components. For example, when the battery is used in a battery pack, both the first terminal 5 of the battery and the current collector 63 need to be connected to the corresponding busbar. In this case, at least part of the current collector 63 is exposed from the opening of the receiving groove 121, which makes it easier for workers to weld the busbar onto the current collector 63, and the processing is convenient.

[0083] The collector plate 63 is provided with a connecting hole 631 that extends through the first direction Z. The collector plate 63 has an annular first connecting protrusion 632, which is located on the hole wall of the connecting hole 631 and is arranged around the axis of the connecting hole 631.

[0084] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An insulating member, characterized by, include: The plate body (11) has a thickness direction in a first direction (Z), the first direction (Z) and the second direction (X) are perpendicular, the plate body (11) has a first clearance hole (1111) passing through along the first direction (Z), and the plate body (11) has a first surface (111) and a second surface (112) opposite to each other in the first direction (Z). An annular protrusion (12) is connected to the first surface (111) and defines a receiving groove (121) with the first surface (111), and the first clearance hole (1111) is located inside the receiving groove (121). Thickened portion (13), the thickened portion (13) is connected to the first surface (111) and located outside the annular protrusion (12); Wherein, the first direction (Z) and the second direction (X) intersect to form a first auxiliary plane (100), and the first auxiliary plane (100) is perpendicular to the third direction (Y); along the third direction (Y), the plate body (11) forms a first orthographic projection (101) on the first auxiliary plane (100), and the thickened part (13) forms a second orthographic projection (102) on the first auxiliary plane (100); along the second direction (X), the first orthographic projection (101) has a first end line (1011) and a second end line (1012) on the first auxiliary plane (100), and the second orthographic projection (102) and the first end line (1011) are spaced apart on the first auxiliary plane (100).

2. The insulator of claim 1, wherein The thickened portion (13) and the outer wall surface of the annular protrusion (12) are connected.

3. The insulator of claim 1, wherein Along the third direction (Y), the annular protrusion (12) forms a third orthographic projection (103) on the first auxiliary plane (100); along the second direction (X), the third orthographic projection (103) has opposing third end lines (1031) and fourth end lines (1032) on the first auxiliary plane (100), the third end line (1031) being closer to the first end line (1011) and the fourth end line (1032) being farther from the first end line (1011); on the first auxiliary plane (100), along the second direction (X), the third end line (1031) is located between the second orthographic projection (102) and the first end line (1011).

4. Insulation according to any one of claims 1-3, characterized in that It also includes a positioning part (14) which is connected to the second surface (112).

5. The insulating element according to any one of claims 1-3, characterized in that The side of the main body (11) includes a first side (113), a second side (114), a third side (115), and a fourth side (116). The second side (114) is connected to one end of the first side (113). The third side (115) is connected to one end of the first side (113) away from the second side (114) and is disposed opposite to the second side (114). One end of the fourth side (116) is connected to one end of the second side (114) away from the first side (113), and the other end is connected to one end of the third side (115) away from the first side (113). The first side surface (113) is an arc surface, the second side surface (114) is a plane surface, and the third side surface (115) is a plane surface.

6. The insulator of claim 5, wherein The first direction (Z) is perpendicular to the second auxiliary plane (200); along the first direction (Z), the orthographic projection of the first side surface (113) onto the second auxiliary plane (200) is arc-shaped.

7. The insulator of claim 5, wherein The second side (114) and the third side (115) are arranged in parallel; the fourth side (116) is planar, and the second side (114) and the fourth side (116) are perpendicular.

8. The insulator of claim 6, wherein The side of the main body (11) of the plate also includes a first arc transition surface (117) and a second arc transition surface (118). The second side surface (114) is connected to the fourth side surface (116) through the first arc transition surface (117), and the third side surface (115) is connected to the fourth side surface (116) through the second arc transition surface (118).

9. A battery, characterized by It includes the insulating member (1) according to any one of claims 1-8, and further includes a housing (2), a core (3), an elastic insulating base (4), a first terminal (5), and a second terminal (6); The housing (2) has an opening (21) located at one end of the housing (2) in the first direction (Z); The core (3) is disposed inside the housing (2); The outer peripheral surface of the elastic insulating seat (4) abuts against the inner wall of the housing (2) and seals the opening (21). The side of the elastic insulating seat (4) facing away from the core (3) is provided with a mounting groove (41) and a mounting hole (42). The mounting hole (42) penetrates the elastic insulating seat (4) along the first direction (Z). The mounting groove (41) is annular, and the mounting hole (42) is located inside the mounting groove (41). The first terminal (5) is in the shape of an annular plate and is disposed in the mounting groove (41). The first terminal (5) is electrically connected to the winding core (3). The side of the first terminal (5) facing away from the winding core (3) is provided with a second connecting protrusion (54), and the side of the second connecting protrusion (54) facing away from the winding core (3) is a third surface (541). The second terminal (6) includes a limiting plate (61), a connecting post (62), and a current collector (63). The limiting plate (61), the connecting post (62), and the current collector (63) are connected along the first direction (Z). The limiting plate (61) is disposed inside the housing (2) and located between the elastic insulating seat (4) and the core (3). The side of the limiting plate (61) facing away from the core (3) is in contact with the elastic insulating seat (4). The side of the limiting plate (61) facing away from the elastic insulating seat (4) is electrically connected to the core (3). The connecting post (62) passes through the mounting hole (42). The current collector (63) is located on the side of the first terminal (5) away from the core (3). The plate body (11) is placed between the first terminal (5) and the current collector (63) to insulate the first terminal (5) and the current collector (63); the side of the plate body (11) facing away from the core (3) is the first surface (111), the current collector (63) is located in the receiving groove (121), and the connecting post (62) passes through the first clearance hole (1111); along the first direction (Z), the first surface (111) is not higher than the third surface (541); On the first auxiliary plane (100), along the second direction (X), the first end line (1011) is close to the orthographic projection of the second connecting protrusion (54), and the second end line (1012) is away from the orthographic projection of the second connecting protrusion (54).

10. The battery according to claim 9, characterized in that, The insulating component (1) further includes a positioning part (14), which is connected to the second surface (112). The first terminal (5) is provided with a positioning groove (55), and the positioning part (14) can be inserted into the positioning groove (55).

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