Connecting piece and top cover assembly

Abstract

The utility model provides a connecting piece and a top cover component, the connecting piece is provided with a pole connecting section, a second connecting section and a tab connecting section which are connected in sequence and arranged at an angle, the pole connecting section and the tab connecting section respectively extend from two sides of the second connecting section along different directions, the pole connecting section is provided with a welding hole, and the welding hole is provided with a welding hole. The axis of the welding hole is perpendicular to the length direction of the pole connecting section, the welding hole is used for being fixedly welded with a pole, one side of the tab connecting section is used for being connected with an insulating part of a battery, and the other side of the tab connecting section is used for being connected with a tab of the battery. By applying the technical scheme of the utility model, the technical problem of low stability when the connecting sheet is used can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a connecting sheet and a top cover assembly. Background Art

[0002] The main product types of active implant neurostimulators include vagus nerve stimulator (VNS), deep brain nerve stimulator (DBS), spinal cord nerve stimulator (SCS), sacral nerve stimulator (SNS), etc. As the core power component, the battery of the active implant neurostimulator occupies a relatively important position. However, in the related art, due to the small size of the battery, in order to reduce space limitations and achieve electrical connection between the pole and the pole ear, a connecting piece structure is usually added to connect the pole and the pole ear to different positions of the connecting piece respectively. Usually, the connecting piece is a straight structure. When the pole is connected to the connecting piece, due to the long length of the pole, a gap will be generated between the connecting piece and the insulating part of the battery. When the connecting piece is welded to the pole ear, the part of the connecting piece close to the pole ear will have no force point, so the connecting piece will bend, and the stability of the connecting piece during use cannot be guaranteed. Utility Model Content

[0003] The embodiment of the utility model provides a connecting piece and a top cover assembly, which can improve the technical problem of low stability of the connecting piece when in use.

[0004] In the first aspect, an embodiment of the utility model provides a connecting piece, which has a pole connecting section, a second connecting section and a pole lug connecting section that are connected in sequence and arranged at an angle, the pole connecting section and the pole lug connecting section extend from both sides of the second connecting section in different directions respectively, a welding hole is provided on the pole connecting section, the axis of the welding hole is perpendicular to the length direction of the pole connecting section, the welding hole is used for welding and fixing to the pole, one side of the pole lug connecting section is used for connecting to the insulating part of the battery, and the other side of the pole lug connecting section is used for connecting to the pole lug of the battery.

[0005] In one embodiment, the total length of the connecting piece is L, 8mm≤L≤15mm, the length of the pole connecting section is L1, the length of the second connecting section is L2, the length of the pole lug connecting section is L3, 1≤L1:L2≤2.5, 0.2≤L2:L3≤1, 0.3≤L1:L3≤5 / 3.

[0006] In one embodiment, 3mm≤L1≤5mm, 2mm≤L2≤3mm, and 3mm≤L3≤10mm.

[0007] In one embodiment, the distance between the center of the welding hole and the side wall of the pole connecting section away from the second connecting section is L4, and 2mm≤L4≤3mm.

[0008] In one embodiment, an avoidance hole is provided on the tab connection section, the axis of the avoidance hole is parallel to the axis of the avoidance hole, the center of the avoidance hole is at a distance L5 from the side wall of the tab connection section away from the second connection section, 1.5mm≤L5≤3mm.

[0009] In one embodiment, the thickness of the connecting piece is D, the width of the connecting piece is W, 0.2 mm≤D≤0.5 mm, 1.5 mm≤W≤3 mm.

[0010] In one embodiment, the connecting sheet is made of aluminum.

[0011] In one embodiment, the angle between the pole connecting section and the second connecting section is a right angle, and the angle between the second connecting section and the pole lug connecting section is a right angle.

[0012] In a second aspect, an embodiment of the utility model provides a top cover assembly, the top cover assembly comprising:

[0013] A top cover; an insulating member, arranged on one side of the top cover; the above-mentioned connecting piece, the connecting piece is arranged on a side of the insulating member away from the top cover; a positive pole, which is connected to the insulating member through a penetration, and one end of the positive pole is welded and fixed to the welding hole of the connecting piece.

[0014] In one embodiment, the inner diameter of the welding hole is larger than the outer diameter of the positive electrode column, and the difference between the inner diameter of the welding hole and the outer diameter of the positive electrode column is L6, 0.02mm≤L6≤0.03mm.

[0015] In one embodiment, the insulating member has a protrusion on one side close to the connecting piece, the protrusion is inserted into the avoidance hole of the connecting piece, and the avoidance hole and the two opposite sides of the protrusion are limitedly matched to limit the displacement of the connecting piece along the width direction of the connecting piece.

[0016] By applying the technical solution of the utility model, the connecting piece is set as a three-section bending structure, and the extension directions of the pole connecting section and the pole lug connecting section are different. In this way, when the pole connecting section of the connecting piece is welded to the pole, the pole lug connecting section of the connecting piece can be connected to the insulating member, so that the insulating member can support the pole lug connecting section, which is convenient for welding the pole lug connecting section of the connecting piece to the pole lug, and prevents the structural bending of the connecting piece during the welding process, which is beneficial to improving the stability of the connecting piece during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of a connecting piece provided in an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the dimensions of the connecting piece provided in the embodiment of the utility model;

[0020] Figure 3 It is another dimension-marking schematic diagram of the connecting piece provided in the embodiment of the utility model;

[0021] Figure 4 is a cross-sectional schematic diagram of a top cover assembly provided in an embodiment of the utility model;

[0022] Figure 5 yes Figure 4 The enlarged schematic diagram of point A in the middle;

[0023] Figure 6 is a bottom view schematic diagram of a top cover assembly provided by an embodiment of the utility model;

[0024] Figure 7 It is a cross-sectional schematic diagram of a battery pack provided in an embodiment of the present utility model.

[0025] The above drawings include the following reference numerals:

[0026] 10. Connecting piece; 11. Pole connecting section; 111. Welding hole; 12. Second connecting section; 13. Pole ear connecting section; 131. Avoidance hole;

[0027] 20. Top cover;

[0028] 30. Insulating member; 31. Raised portion;

[0029] 40. Positive pole;

[0030] 50. Ear. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] like Figure 1-Figure 3As shown, in the first aspect, an embodiment of the utility model provides a connecting piece 10, the connecting piece 10 has a pole connecting section 11, a second connecting section 12 and a pole lug connecting section 13 which are connected in sequence and arranged at an angle, the pole connecting section 11 and the pole lug connecting section 13 extend from both sides of the second connecting section 12 in different directions respectively, a welding hole 111 is provided on the pole connecting section 11, the axis of the welding hole 111 is perpendicular to the length direction of the pole connecting section 11, the welding hole 111 is used for welding and fixing with the pole, one side of the pole lug connecting section 13 is used for connecting with the insulating member 30 of the battery, and the other side of the pole lug connecting section 13 is used for connecting with the pole lug 50 of the battery.

[0033] By applying the technical solution of the utility model, the connecting piece 10 is set as a three-section bending structure, and the extension directions of the pole connecting section 11 and the pole lug connecting section 13 are different. In this way, when the pole connecting section 11 of the connecting piece 10 is welded to the pole, the pole lug connecting section 13 of the connecting piece 10 can be connected to the insulating member 30, so that the insulating member 30 can support the pole lug connecting section 13, which is convenient for welding the pole lug connecting section 13 of the connecting piece 10 with the pole lug 50, preventing the connecting piece 10 from structural bending during the welding process, thereby helping to improve the stability of the connecting piece 10 during welding.

[0034] Furthermore, the total length of the connecting piece 10 is L, 8mm≤L≤15mm, the length of the pole connecting section 11 is L1, the length of the second connecting section 12 is L2, and the length of the pole ear connecting section 13 is L3, 1≤L1:L2≤2.5, 0.2≤L2:L3≤1, 0.3≤L1:L3≤5 / 3, and in the present application 3mm≤L1≤5mm, 2mm≤L2≤3mm, 3mm≤L3≤10mm.

[0035] When L>15mm, the length of the connecting piece 10 is too long, which requires more materials, thus increasing the production cost of the assembly, which is not conducive to mass production of the assembly. When L<8mm, the total length of the connecting piece 10 is too short, which is not conducive to the connection between the connecting piece 10 and the insulating member 30, thereby reducing the stability of the device when in use. Therefore, setting 8mm≤L≤15mm can not only reduce the production cost of the assembly, but also ensure the stability of the assembly when in use. Optionally, L can be set to values ​​such as 8mm, 10mm or 15mm, and the specific setting should be selected according to the use environment of the device.

[0036] When L1>5mm, the length of the pole connection section 11 is too long, which requires too much installation space, thus increasing the overall volume of the device, which is not conducive to the miniaturization of the device. When L1<3mm, the length of the pole connection section 11 is too short, which is not convenient for welding with the pole. Therefore, 3mm≤L1≤5mm is not only conducive to reducing the overall volume of the device, but also convenient for welding with the pole. Optionally, L1 can be set to a value such as 3mm, 4mm or 5mm, and the specific setting should be selected according to the use environment of the device.

[0037] When L2>3mm, the length of the second connection section 12 is too long, so that the height of the connection piece 10 is too high, so that too much installation space is required, which increases the overall volume of the device, which is not conducive to the miniaturization of the device. When L2<2mm, the length of the second connection section 12 is too short, which is not conducive to the connection between the tab connection section 13 and the insulating member 30. Therefore, 2mm≤L2≤3mm is not only conducive to reducing the overall volume of the device, but also facilitates the connection between the tab connection section 13 and the insulating member 30. Optionally, L2 can be set to a value such as 2mm, 2.5mm or 3mm, and the specific setting should be selected according to the use environment of the device.

[0038] When L3>10mm, the length of the tab connection section 13 is too long, which requires more materials, thus increasing the production cost of the assembly, which is not conducive to mass production of the assembly. When L3<3mm, the length of the tab connection section 13 is too short, which is not convenient for welding with the tab 50. Therefore, 3mm≤L3≤10mm is not only conducive to reducing the production cost of the device, but also convenient for welding with the tab 50. Optionally, L3 can be set to a value such as 3mm, 8mm or 10mm, and the specific setting should be selected according to the use environment of the device.

[0039] Of course, in other embodiments of the present application, the above-mentioned numerical values ​​may also be set to other values, and the specific settings should be selected according to the use environment of the device, so as to improve the applicability and scope of application of the device.

[0040] Specifically, the distance between the center of the welding hole 111 and the side wall of the pole connecting section 11 away from the second connecting section 12 is L4, and 2mm≤L4≤3mm.

[0041] When L4>3mm, the distance is too long, which may affect the structure of the second connecting section 12 when processing the welding hole 111, thereby reducing the structural stability of the connecting piece 10. When L4<2mm, the distance is too short, which makes it inconvenient to process the welding hole 111. Therefore, setting 2mm≤L4≤3mm can not only avoid affecting the structure of the second connecting section 12 when processing the welding hole 111, but also facilitate the processing of the welding hole 111, thereby improving the processing efficiency of the welding hole 111.

[0042] Optionally, L4 can be set to a value such as 2mm, 2.5mm or 3mm, and the specific setting should be selected according to the use environment of the device.

[0043] Furthermore, an avoidance hole 131 is provided on the tab connection section 13, the axis of the avoidance hole 131 is parallel to the axis of the avoidance hole 131, and the center of the avoidance hole 131 is at a distance L5 from the side wall of the tab connection section 13 away from the second connection section 12, 1.5mm≤L5≤3mm.

[0044] When L5>3mm, the distance is too long, which may affect the structure of the second connecting section 12 when processing the avoidance hole 131, thereby reducing the structural stability of the connecting piece 10. When L5<1.5mm, the distance is too short, which makes it inconvenient to process the avoidance hole 131. Therefore, setting 1.5mm≤L5≤3mm can not only avoid affecting the structure of the second connecting section 12 when processing the avoidance hole 131, but also facilitate the processing of the avoidance hole 131, thereby improving the processing efficiency of the avoidance hole 131.

[0045] Optionally, L5 can be set to a value such as 1.5 mm, 2 mm or 3 mm, and the specific setting should be selected according to the use environment of the device.

[0046] Specifically, in one embodiment, the thickness of the connecting sheet 10 is D, the width of the connecting sheet 10 is W, 0.2 mm≤D≤0.5 mm, 1.5 mm≤W≤3 mm.

[0047] When D>0.5mm, the thickness is too thick, which will increase the production cost of the device and is not conducive to mass production of components. When D<0.2mm, the thickness is too thin, which will cause the overall structure of the connecting piece 10 to be thinner, making the connecting piece 10 prone to breakage and other phenomena, thereby reducing the performance of the connecting piece 10. Therefore, setting 0.2mm≤D≤0.5mm can not only reduce the production cost of the connecting piece 10, but also ensure the structural strength of the connecting piece 10.

[0048] Optionally, D may be set to a value such as 0.2 mm, 0.4 mm or 0.5 mm, and the specific setting should be selected according to the use environment of the device.

[0049] When W>3mm, the width is too large, which will increase the production cost of the device and is not conducive to mass production of components. When W<1.5mm, the width is too short, which makes it inconvenient to process the welding hole 111 and the avoidance hole 131. Therefore, setting 1.5mm≤W≤3mm can not only reduce the production cost of the connecting piece 10, but also facilitate the processing of the avoidance hole 131 and the welding hole 111.

[0050] Optionally, W can be set to a value such as 1.5 mm, 2 mm or 3 mm, and the specific setting should be selected according to the use environment of the device.

[0051] Further, the material of the connecting sheet 10 is aluminum. In the present application, the grade of aluminum is 1050 or 1060. Optionally, in other embodiments of the present application, the material of the connecting sheet 10 can also be set to stainless steel, low carbon steel, titanium, molybdenum and molybdenum alloy, etc., as long as it can meet the use requirements of the device.

[0052] Specifically, the angle between the pole connecting section 11 and the second connecting section 12 is a right angle, and the angle between the second connecting section 12 and the pole lug connecting section 13 is a right angle. Optionally, the angles between the above structures can also be set to other angles as long as they can meet the use requirements of the device.

[0053] like Figure 4-Figure 6 As shown, in the second aspect, an embodiment of the utility model provides a top cover 20 assembly, and the top cover 20 assembly includes:

[0054] The top cover 20; the insulating member 30, which is arranged on one side of the top cover 20; the above-mentioned connecting piece 10, which is arranged on the side of the insulating member 30 away from the top cover 20; the positive electrode column 40, which is connected to the insulating member 30 through penetration, and one end of the positive electrode column 40 is welded and fixed to the welding hole 111 of the connecting piece 10.

[0055] In the present application, the pole and the welding hole 111 are laser seam welded, and the pole tab 50 and the connecting piece 10 are laser welded with 4-6 welding points, so that the welding strength of the two can be guaranteed.

[0056] Furthermore, the inner diameter of the welding hole 111 is larger than the outer diameter of the positive electrode column 40 , and the difference between the inner diameter of the welding hole 111 and the outer diameter of the positive electrode column 40 is L6, 0.02 mm≤L6≤0.03 mm.

[0057] When L6>0.03mm, the weld is too large and there will be a risk of welding leak, which is not conducive to the welding of the two. When L6<0.02mm, the weld is too small and it is not convenient to assemble the two before welding. Therefore, setting 0.02mm≤L6≤0.03mm can not only avoid the risk of welding leak, but also facilitate the assembly of the two before welding.

[0058] Optionally, W can be set to a value such as 0.02 mm, 0.025 mm or 0.03 mm, and the specific setting should be selected according to the use environment of the device.

[0059] Specifically, the insulating member 30 has a protrusion 31 on one side close to the connecting piece 10. The protrusion 31 is inserted into the avoidance hole 131 of the connecting piece 10. The avoidance hole 131 and the two opposite sides of the protrusion 31 are limitedly matched to limit the displacement of the connecting piece along the width direction of the connecting piece.

[0060] Among them, in the present application, after the connection piece 10 is welded to the pole, the protrusion 31 can also be flattened by using an external component to form an “I”-shaped limit for the avoidance hole 131 .

[0061] like Figure 7 As shown, the utility model also provides a battery pack, the battery pack includes the top cover 20 assembly mentioned above,

[0062] By applying the technical solution of the utility model, the connecting piece 10 is set as a three-section bending structure, and the extension directions of the pole connecting section 11 and the pole lug connecting section 13 are different. In this way, when the pole connecting section 11 of the connecting piece 10 is welded to the pole, the pole lug connecting section 13 of the connecting piece 10 can be connected to the insulating member 30, so that the insulating member 30 can support the pole lug connecting section 13, which is convenient for welding the pole lug connecting section 13 of the connecting piece 10 with the pole lug 50, preventing the connecting piece 10 from structural bending during the welding process, thereby helping to improve the stability of the connecting piece 10 during welding.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0064] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0065] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0068] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A connecting sheet, characterized in that: The connecting piece comprises a pole connecting section, a second connecting section and a pole lug connecting section which are connected in sequence and arranged at an angle, the pole connecting section and the pole lug connecting section extend from both sides of the second connecting section in different directions respectively, a welding hole is provided on the pole connecting section, the axis of the welding hole is perpendicular to the length direction of the pole connecting section, the welding hole is used for welding and fixing with the pole, one side of the pole lug connecting section is used for connecting with the insulating part of the battery, and the other side of the pole lug connecting section is used for connecting with the pole lug of the battery.

2. The connecting piece according to claim 1, characterized in that: The total length of the connecting piece is L, 8mm≤L≤15mm, the length of the pole connecting section is L1, the length of the second connecting section is L2, the length of the pole lug connecting section is L3, 1≤L1:L2≤2.5, 0.2≤L2:L3≤1, 0.3≤L1:L3≤5 / 3.

3. The connecting piece according to claim 2, characterized in that: 3mm≤L1≤5mm, 2mm≤L2≤3mm, 3mm≤L3≤10mm.

4. The connecting sheet according to claim 1, characterized in that: The distance between the center of the welding hole and the side wall of the pole connecting section away from the second connecting section is L4, 2mm≤L4≤3mm.

5. The connecting sheet according to claim 1, characterized in that: The tab connection section is provided with an avoidance hole, the axis of the avoidance hole is parallel to the axis of the welding hole, the center of the avoidance hole is at a distance L5 from the side wall of the tab connection section away from the second connection section, and 1.5mm≤L5≤3mm.

6. The connecting sheet according to claim 1, characterized in that: The thickness of the connecting piece is D, the width of the connecting piece is W, 0.2mm≤D≤0.5mm, 1.5mm≤W≤3mm.

7. The connecting sheet according to any one of claims 1 to 6, characterized in that: The material of the connecting piece is aluminum.

8. The connecting sheet according to claim 1, characterized in that: The angle between the pole connecting section and the second connecting section is a right angle, and the angle between the second connecting section and the pole lug connecting section is a right angle.

9. A top cover assembly, characterized in that: The top cover assembly comprises: Top cover; An insulating member, disposed on one side of the top cover; The connecting piece according to any one of claims 1 to 8, wherein the connecting piece is arranged on a side of the insulating member away from the top cover; The positive pole is connected to the insulating member through penetration, and one end of the positive pole is fixedly welded to the welding hole of the connecting piece.

10. The top cover assembly according to claim 9, characterized in that: The inner diameter of the welding hole is larger than the outer diameter of the positive electrode column, and the difference between the inner diameter of the welding hole and the outer diameter of the positive electrode column is L6, 0.02mm≤L6≤0.03mm.

11. The top cover assembly according to claim 9, characterized in that: The insulating member has a protrusion on one side close to the connecting piece, and the protrusion is inserted into the avoidance hole of the connecting piece. The avoidance hole and the two opposite sides of the protrusion are limitedly matched to limit the displacement of the connecting piece along the width direction of the connecting piece.

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