Battery cover plate, battery and electric equipment

Abstract

The utility model provides a battery cover plate, a battery and electric equipment, and relates to the technical field of batteries. The battery cover plate comprises a substrate, a lead-out sheet and a pole. The substrate is provided with a mounting hole, the leading-out sheet and the substrate are stacked and fixedly connected, the leading-out sheet is provided with a first thread structure, the pole is provided with a second thread structure, one end of the pole penetrates out of the mounting hole, and the second thread structure is fixedly connected with the first thread structure in a threaded mode. The battery cover plate, the battery and the electric equipment meet the structure, so that the connection mode of the lead-out sheet and the pole is simplified, poor welding of the lead-out sheet and the pole during laser welding is prevented, and the assembly yield of the battery cover plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery cover, a battery and an electrical device. Background Art

[0002] For energy storage or power battery terminals, large volume and high energy density are the future development direction. Improving the space utilization of modules and reducing assembly costs are of great significance. Usually, the lead-out plate of the battery is connected to the pole by laser welding. However, the laser welding process is more complicated and prone to problems such as welding perforation. In addition, the welding slag produced by laser welding can easily have a negative impact on the safety function of the battery. Utility Model Content

[0003] The utility model aims to provide a battery cover plate, a battery and an electrical device, which solve the problem of poor connection between a pole and a lead-out piece.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In a first aspect, the utility model provides a battery cover, comprising: a substrate having a mounting hole; a lead-out plate stacked and fixedly connected to the substrate, the lead-out plate being provided with a first threaded structure; a pole having a second threaded structure, the second threaded structure being threadedly fixedly connected to the first threaded structure, and one end of the pole passing through the mounting hole.

[0006] In one embodiment, the lead-out piece includes a lead-out piece body and a connecting portion, the connecting portion protrudes from the lead-out piece body and is inserted and connected with the mounting hole, and the first threaded structure is located on the connecting portion.

[0007] In one embodiment, the first threaded structure includes a threaded hole, and the second threaded structure includes a threaded column threadedly matched with the threaded hole, and / or the first threaded structure includes a threaded column, and the second threaded structure includes a threaded hole threadedly matched with the threaded column.

[0008] In one embodiment, in a first direction, the length of the connecting portion is less than or equal to the length of the inner wall of the mounting hole, and the first direction is a stacking direction of the substrate and the lead-out sheet.

[0009] In one embodiment, in a first direction, the length of the threaded portion on the pole is greater than or equal to the length of the connecting portion, and the first direction is a stacking direction of the substrate and the lead-out sheet.

[0010] In one embodiment, the substrate has a groove on one side in a first direction, the first direction is the stacking direction of the substrate and the lead-out plate, the groove has a bottom wall, the mounting hole and the bottom wall of the groove are connected, and at least part of the lead-out plate is accommodated in the groove.

[0011] In one embodiment, the groove has a side wall, and the lead-out plate and the side wall of the groove are spaced apart from each other.

[0012] In one embodiment, the groove has a first side wall and a second side wall opposite to each other, and the lead-out piece has a third side wall and a fourth side wall opposite to each other, the first side wall is used to be opposite to the third side wall, and the second side wall is used to be opposite to the fourth side wall, and on a plane perpendicular to the first direction, the minimum distance between the first side wall and the rotation center of the lead-out piece is greater than or equal to the maximum distance between the third side wall and the rotation center of the lead-out piece, and the minimum distance between the second side wall and the rotation center of the lead-out piece is greater than or equal to the maximum distance between the fourth side wall and the rotation center of the lead-out piece.

[0013] In one embodiment, a protrusion is provided on a side wall of the pole, the protrusion has a first wall surface on one side in the first direction, the substrate has a second wall surface on a side opposite to the first direction, and the first wall surface abuts against the second wall surface.

[0014] In one embodiment, the outer side of the edge of the mounting hole has a step structure, the second wall surface is at least a portion of the inner wall surface of the step structure, and the battery cover plate also includes a sealing ring, which is located between the first wall surface and the second wall surface.

[0015] In a second aspect, the utility model further provides a battery, comprising a pole ear and a battery cover as described in any one of the embodiments of the first aspect above, wherein the pole ear and the lead-out piece of the battery cover are connected to a side of the battery cover away from the pole of the battery cover.

[0016] In a third aspect, the utility model further provides an electrical device, comprising an electrical device and the battery described in the above-mentioned second aspect implementation, wherein the electrical device and the battery are electrically connected.

[0017] The battery cover provided by the utility model includes a substrate, a lead-out piece and a pole. The substrate has a mounting hole, the lead-out piece and the substrate are stacked and fixedly connected, a first thread structure is provided on the lead-out piece, the pole has a second thread structure, one end of the pole passes through the mounting hole, the second thread structure and the first thread structure are threadedly fixedly connected, so that the lead-out piece and the pole are fixedly connected, compared with the welding of the lead-out piece and the pole, the shape of the pole is usually cylindrical, so the shape of the welding of the lead-out piece and the pole is circular, the process is relatively complicated, the lead-out piece and the pole are connected by thread, which simplifies the connection method of the lead-out piece and the pole, makes the cover easier to assemble, and is also conducive to preventing the lead-out piece and the pole from having poor welding during laser welding, which is conducive to improving the assembly yield of the battery cover and optimizing the assembly process of the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic structural diagram of a battery cover according to an embodiment;

[0020] Figure 2 is an exploded view of a battery cover according to an embodiment;

[0021] Figure 3 is a schematic structural diagram of a substrate according to an embodiment;

[0022] Figure 4 is a bottom view of a substrate of one embodiment;

[0023] Figure 5 is a schematic diagram of the structure of a pole in an implementation mode;

[0024] Figure 6 is a front view of a pole according to an embodiment.

[0025] Description of reference numerals:

[0026] 10-base plate, 11-mounting hole, 12-groove, 121-first side wall, 122-second side wall, 13-step structure, 131-second wall surface;

[0027] 20-lead-out piece, 21-lead-out piece body, 22-connecting portion, 221-first thread structure, 23-third side wall, 24-fourth side wall;

[0028] 30-pole, 31-second thread structure, 32-protrusion, 321-first wall surface;

[0029] 40-seal ring, 50-ear. DETAILED DESCRIPTION

[0030] 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 ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] The utility model embodiment provides a battery cover, see Figure 1 , Figure 2 and Figure 3 The battery cover comprises a substrate 10, a lead-out piece 20 and a pole 30. The substrate 10 has a mounting hole 11, the lead-out piece 20 and the substrate 10 are stacked and fixedly connected, the lead-out piece 20 is provided with a first thread structure 221, the pole 30 has a second thread structure 31, the second thread structure 31 and the first thread structure 221 are threadedly fixedly connected, so that the lead-out piece 20 and the pole 30 are fixedly connected. Compared with the welding of the lead-out piece 20 and the pole 30, the shape of the pole 30 is usually cylindrical, so the shape of the welding of the lead-out piece 20 and the pole 30 is circular, and the process is relatively complicated. The lead-out piece 20 and the pole 30 are connected by threads, which simplifies the connection method of the lead-out piece 20 and the pole 30, making the cover easier to assemble, and at the same time, it is conducive to preventing the lead-out piece 20 and the pole 30 from having poor welding during laser welding, which is conducive to improving the assembly yield of the battery cover and optimizing the assembly process of the cover.

[0037] The substrate 10 has a front side and a back side facing each other, the front side of the substrate 10 is the outer surface of the battery, the back side of the substrate 10 contacts the inside of the battery, and the lead sheet 20 is located inside the battery. One end of the pole 30 passes through the mounting hole 11, so that one end of the pole 30 is located outside the battery, which is conducive to the contact and connection between the pole 30 and other structures outside the battery.

[0038] Optionally, the lead-out piece 20 is plate-shaped, and is provided with a through hole or a blind hole. The inner wall of the through hole or the blind hole of the lead-out piece 20 is provided with an internal thread, and the side wall of the pole 30 is provided with an external thread, that is, the first thread structure 221 is a threaded hole, and the second thread structure 31 is a threaded column, and the lead-out piece 20 and the pole 30 are threadedly connected.

[0039] Optionally, both ends of the pole 30 pass through the two sides of the mounting hole 11 of the substrate 10, the lead-out piece 20 is provided with a threaded hole, and the threaded hole passes through the lead-out piece 20, one end of the pole 30 passes through the threaded hole, and an avoidance structure for the pole 30 is provided inside the battery, which can also realize the threaded connection between the lead-out piece 20 and the pole 30.

[0040] Optionally, the lead-out piece 20 is in the shape of a plate, and the surface where the lead-out piece 20 is stacked and connected to the substrate 10 is provided with an annular guide groove, the inner wall of the annular guide groove is provided with an external thread, the pole 30 is provided with a blind hole, and the inner wall of the blind hole of the pole 30 is provided with an internal thread, that is, the first thread structure 221 is a threaded column, and the second thread structure 31 is a threaded hole, and the lead-out piece 20 and the pole 30 are threadedly connected.

[0041] Optionally, the substrate 10 includes a positive electrode substrate and a negative electrode substrate, the positive electrode substrate has a positive electrode mounting hole, the negative electrode substrate has a negative electrode mounting hole, the pole 30 includes a positive pole and a negative pole, and the lead-out sheet 20 includes a positive lead-out sheet and a negative pole lead-out sheet. Among them, the positive electrode substrate and the positive lead-out sheet are stacked and fixedly connected, the positive lead-out sheet and the positive pole column are threadedly connected, and one end of the positive pole column is passed through the positive electrode mounting hole. The negative electrode substrate and the negative lead-out sheet are stacked and fixedly connected, the negative lead-out sheet and the negative pole column are threadedly connected, and one end of the negative pole column is passed through the negative pole mounting hole. It is conducive to optimizing the assembly process of the positive cover plate and the negative cover plate of the battery, and improving the assembly yield of the positive cover plate and the negative cover plate of the battery.

[0042] The battery cover provided by the present application includes a substrate 10, a lead-out piece 20 and a pole 30. The substrate 10 has a mounting hole 11, the lead-out piece 20 and the substrate 10 are stacked and fixedly connected, the lead-out piece 20 is provided with a first thread structure 221, the pole 30 has a second thread structure 31, one end of the pole 30 is passed through the mounting hole 11, and the second thread structure 31 and the first thread structure 221 are threadedly fixedly connected, so that the lead-out piece 20 and the pole 30 are fixedly connected, compared with the welding of the lead-out piece 20 and the pole 30, the shape of the pole 30 is usually cylindrical, so the shape of the welding of the lead-out piece 20 and the pole 30 is circular, the process is relatively complicated, the lead-out piece 20 and the pole 30 are threadedly connected, which simplifies the connection method of the lead-out piece 20 and the pole 30, making the cover easier to assemble, and at the same time, it is conducive to preventing the lead-out piece 20 and the pole 30 from having poor welding during laser welding, which is conducive to improving the assembly yield of the battery cover and optimizing the assembly process of the cover.

[0043] In one implementation, see Figure 1 and Figure 2 The lead-out piece 20 includes a lead-out piece body 21 and a connecting portion 22. The connecting portion 22 protrudes from the lead-out piece body 21 and is connected to the mounting hole 11 through insertion, that is, the connecting portion 22 extends into the inner wall of the mounting hole 11, which is beneficial to increase the contact area between the connecting portion 22 and the substrate 10, and between the connecting portion 22 and the pole 30. The first thread structure 221 is located on the connecting portion 22, and the first thread structure 221 is connected with the second thread structure 31. Among them, the substrate 10 includes a metal light cover and a plastic partition, which are connected. The light cover and the partition are stacked, and the partition is located between the lead-out piece body 21 and the light cover, and there is a spacing distance between the connecting portion and the light cover to avoid short circuit between the positive and negative electrodes to the light cover.

[0044] Optionally, the first threaded structure 221 includes a threaded hole, and the second threaded structure 31 includes a threaded column that is threadedly matched with the threaded hole, that is, the connecting portion 22 has a blind hole or a through hole, and the inner wall of the through hole or the blind hole of the connecting portion 22 is provided with an internal thread, and the side wall of the pole 30 is provided with an external thread. By providing the connecting portion 22 on the lead-out piece 20, the area of ​​the first threaded structure 221 provided on the lead-out piece 20 is increased, and the contact area of ​​the threaded connection between the lead-out piece 20 and the pole 30 is also increased, thereby improving the stability of the connection between the lead-out piece 20 and the pole 30, which is conducive to ensuring the assembly yield of the battery cover. When the connecting portion 22 has a through hole, the area of ​​the first threaded structure 221 provided on the connecting portion 22 is larger, which is conducive to further improving the stability of the connection between the lead-out piece 20 and the pole 30.

[0045] Optionally, the first threaded structure 221 includes a threaded column, and the second threaded structure 31 includes a threaded hole that is threadedly matched with the threaded column, that is, the pole 30 has a blind hole, the inner wall of the blind hole of the pole 30 is provided with an internal thread, and the side wall of the connecting portion 22 is provided with an external thread. Similarly, by providing the connecting portion 22 on the lead-out sheet 20, the area of ​​the lead-out sheet 20 where the first threaded structure 221 is provided is increased, thereby improving the stability of the connection between the lead-out sheet 20 and the pole 30, which is conducive to ensuring the assembly yield of the battery cover.

[0046] Optionally, the pole 30 includes a positive pole and a negative pole, and the lead sheet 20 includes a positive lead sheet and a negative lead sheet. The first threaded structure 221 of the positive pole is a threaded pole, and the second threaded structure 31 of the positive lead sheet is a threaded hole threadedly matched with the threaded pole; the first threaded structure 221 of the negative pole is a threaded hole, and the negative lead sheet is a threaded pole threadedly matched with the threaded hole. The reverse is also possible.

[0047] In one implementation, see Figure 1 and Figure 2, in the first direction, the length of the connection portion 22 is less than or equal to the length of the inner wall of the mounting hole 11, and the first direction is the stacking direction of the substrate 10 and the lead-out sheet 20, that is, the connection portion 22 extends into the inner wall of the mounting hole 11, and the connection portion 22 does not pass through the mounting hole 11. Wherein, the substrate 10 includes a metal light cover plate and a plastic partition plate connected to each other. When a through hole is provided on the light cover plate, the through hole is connected to the mounting hole 11, and a step structure 13 is formed outside the edge of the mounting hole 11, in the first direction, the length of the connection portion 22 is less than or equal to the length of the inner wall of the mounting hole 11, which is conducive to preventing the connection portion 22 from being exposed to the outside of the battery after passing through the mounting hole 11, thereby preventing the connection portion 22 from contacting and connecting with other structures outside the battery and affecting the operation of the battery. At the same time, it is conducive to preventing the length of the battery cover plate in the first direction from being too long, thereby reducing the volume of the battery. When a step structure 13 is provided on the optical cover, and the bottom wall of the step structure 13 is connected to the mounting hole 11, in the first direction, the length of the connecting portion 22 is less than the length of the inner wall of the mounting hole 11, so that there is a spacing distance between the connecting portion and the optical cover, which is beneficial to avoid contact between the connecting portion 22 and the optical cover, so as to avoid short circuit between the positive and negative electrodes to the optical cover.

[0048] Optionally, the thickness of the substrate 10 in the first direction is uneven, that is, the lengths of the edges of the mounting hole 11 in the first direction are different. In this case, in the first direction, the length of the connecting portion 22 is less than or equal to the minimum length of the inner wall of the mounting hole 11, thereby achieving the goal that the connecting portion 22 does not pass through the mounting hole 11.

[0049] Optionally, in the first direction, the length of the threaded portion of the pole 30 is greater than or equal to the length of the connecting portion 22, so that the threaded portion of the connecting portion 22 is connected to the threaded portion of the pole 30, avoiding incomplete connection between the connecting portion 22 and the pole 30, which is conducive to ensuring the connection area between the connecting portion 22 and the pole 30, thereby ensuring the stability of the connection between the lead-out piece 20 and the pole 30. When the length of the threaded portion of the pole 30 is equal to the length of the connecting portion 22 in the first direction, it is conducive to ensuring the contact area between the pole 30 and the lead-out piece 20, while avoiding the length of the battery cover in the first direction being too long, thereby reducing the volume of the battery.

[0050] In one implementation, see Figure 1 , Figure 2 , Figure 3 and Figure 4The substrate 10 has a groove 12 on one side in the first direction. The first direction is the stacking direction of the substrate 10 and the lead-out piece 20. The groove 12 has a bottom wall. The mounting hole 11 of the substrate 10 is connected to the bottom wall of the groove 12. At least part of the lead-out piece 20 is accommodated in the groove 12, so that the connection position between the lead-out piece 20 and the substrate 10 is more prominent, which is conducive to simplifying the installation process of the lead-out piece 20 and the substrate 10, facilitating the installation between the lead-out piece 20 and the substrate 10, and is conducive to reducing the length of the battery cover in the first direction after installation, thereby reducing the volume of the battery.

[0051] Optionally, the groove 12 has a side wall, and the lead-out piece 20 and the side wall of the groove 12 are spaced apart from each other, so that a gap is left between the lead-out piece 20 and the side wall of the groove 12, which helps to avoid the side wall of the groove 12 restricting the rotation of the lead-out piece 20, thereby facilitating the threaded connection between the lead-out piece 20 and the pole 30, so that both the lead-out piece 20 and the pole 30 can rotate, thereby facilitating the threaded connection between the lead-out piece 20 and the pole 30.

[0052] In one implementation, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The groove 12 has a first side wall 121 and a second side wall 122 opposite to each other, and the lead-out piece 20 has a third side wall 23 and a fourth side wall 24 opposite to each other. The first side wall 121 is used to be opposite to the third side wall 23, and the second side wall 122 is used to be opposite to the fourth side wall 24. On a plane perpendicular to the first direction, the minimum distance between the first side wall 121 and the rotation center of the lead-out piece 20 is greater than or equal to the maximum distance between the third side wall 23 and the rotation center of the lead-out piece 20, that is, any point on the edge of the third side wall 23 can rotate around the rotation center of the lead-out piece 20 in the groove 12, and the first side wall 121 does not interfere with the third side wall 23. Among them, the rotation center of the lead-out piece 20 is the central axis of the first thread structure 221.

[0053] On a plane perpendicular to the first direction, the minimum distance between the second side wall 122 and the rotation center of the lead-out plate 20 is greater than or equal to the maximum distance between the fourth side wall 24 and the rotation center of the lead-out plate 20, that is, any point on the edge of the fourth side wall 24 can rotate around the rotation center of the lead-out plate 20 in the groove 12, and the second side wall 122 does not interfere with the fourth side wall 24.

[0054] By controlling the distance between the first side wall 121 of the groove 12 and the third side wall 23 of the lead-out piece 20, and the distance between the second side wall 122 of the groove 12 and the fourth side wall 24 of the lead-out piece 20, it is possible to avoid the first side wall 121 and the second side wall 122 of the groove 12 restricting the rotation of the lead-out piece 20, so that the lead-out piece 20 can rotate a certain angle in the groove 12, which is conducive to the threaded connection between the lead-out piece 20 and the pole 30, so that both the lead-out piece 20 and the pole 30 can rotate, thereby facilitating the threaded connection between the lead-out piece 20 and the pole 30, thereby facilitating the installation of the battery cover.

[0055] In one implementation, see Figure 1 , Figure 2 , Figure 5 and Figure 6 , the side wall of the pole 30 has a protrusion 32, the side of the protrusion 32 in the first direction has a first wall surface 321, the side of the substrate 10 in the opposite direction of the first direction has a second wall surface 131, and the first wall surface 321 and the second wall surface 131 are in contact with each other. That is, when one end of the pole 30 extends into the inner wall of the mounting hole 11 and the other end is located outside the mounting hole 11, the side wall of the portion of the pole 30 located outside the mounting hole 11 has a protrusion 32, so that the protrusion 32 and the substrate 10 are in contact with each other, so that part of the pole 30 cannot extend into the inner wall of the mounting hole 11. The contact between the protrusion 32 and the substrate 10 includes direct contact between the protrusion 32 and the substrate 10, and also includes indirect contact between the protrusion 32 and the substrate 10.

[0056] Specifically, when the portion of the pole 30 extending into the inner wall of the mounting hole 11 is threadedly connected with the lead-out piece 20, the protrusion 32 on the side wall of the pole 30 abuts against the substrate 10, so that the substrate 10 is sandwiched between the pole 30 and the lead-out piece 20, and the step of fixing the substrate 10 and the lead-out piece 20 or fixing the substrate 10 to the base is omitted. At the same time, the protrusion 32 on the side wall of the pole 30 abuts against the substrate 10, so that the pole 30 and the mounting hole 11 are tightly assembled, and there is no gap between the outer surface of the pole 30 and the substrate 10, which is conducive to achieving the sealing between the pole 30 and the substrate 10, and the edge of the mounting hole 11 limits the protrusion 32, which is convenient for determining the length of the pole 30 protruding from the substrate 10, thereby improving the accuracy of the volume control of the battery cover.

[0057] In one implementation, see Figure 1 , Figure 2 and Figure 3The outer side of the edge of the mounting hole 11 has a step structure 13, and the second wall surface 131 is at least a part of the inner wall surface of the step structure 13. The battery cover also includes a sealing ring 40, and the sealing ring 40 is located between the first wall surface 321 and the second wall surface 131, so that the sealing ring 40 is at least partially accommodated in the step structure 13, which is conducive to limiting the sealing ring 40 and avoiding the displacement of the sealing ring 40 and affecting the sealing effect. The sealing ring 40 can be deformed, and the sealing ring 40 is clamped between the pole 30 and the substrate 10 to fill the gap between the pole 30 and the substrate 10, which is conducive to achieving the sealing between the pole 30 and the substrate 10.

[0058] Optionally, in the first direction, the length of the sealing ring 40 is less than or equal to the length of the step structure 13, so that the sealing ring 40 is completely accommodated in the step structure 13, so that when the sealing ring 40 is clamped between the pole 30 and the substrate 10, the protrusion 32 of the pole 30 can abut against the substrate 10, which is beneficial to further seal the gap between the pole 30 and the substrate 10, thereby ensuring the sealing effect between the pole 30 and the substrate 10.

[0059] The utility model also provides a battery, see Figure 1 and Figure 2 , including a pole ear 50 and a battery cover plate of any one of the above-mentioned first aspect embodiments, the pole ear 50 and the lead-out piece 20 of the battery cover plate are connected to the side of the pole 30 of the battery cover plate away from the pole 30 of the battery cover plate.

[0060] Optionally, the pole lug 50 and the lead-out sheet 20 are connected by laser welding, and there is a spacing distance between the welding position of the pole lug 50 and the lead-out sheet 20 and the projection of the pole 30 on the lead-out sheet 20, so that the welding of the pole lug 50 and the lead-out sheet 20 avoids the pole 30, which helps to avoid the welding of the pole lug 50 and the lead-out sheet 20 affecting the connection between the pole 30 and the lead-out sheet 20.

[0061] It can be understood that the battery in this embodiment has the battery cover in the above embodiment. Therefore, the battery in this embodiment has all the technical effects of the battery cover in the above embodiment. Since the technical effects of the battery cover have been fully explained in the above embodiment, they will not be repeated here.

[0062] The utility model also provides an electrical device, see Figure 1 and Figure 2 , including an electrical appliance and the battery in the above-mentioned second aspect embodiment, the electrical appliance and the battery are electrically connected.

[0063] It can be understood that the electrical equipment in this embodiment has the battery in the above embodiment. Therefore, the electrical equipment in this embodiment has all the technical effects of the battery in the above embodiment. Since the technical effects of the battery have been fully explained in the above embodiment, they will not be repeated here.

[0064] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0065] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A battery cover, characterized in that: include: a base plate having a mounting hole; A lead-out plate, which is stacked and fixedly connected to the substrate, and the lead-out plate is provided with a first thread structure; The pole has a second thread structure, the second thread structure is threadedly fixedly connected to the first thread structure, and one end of the pole passes through the mounting hole.

2. The battery cover according to claim 1, characterized in that: The lead-out piece includes a lead-out piece body and a connecting portion, wherein the connecting portion protrudes from the lead-out piece body and is inserted and connected with the mounting hole, and the first thread structure is located on the connecting portion.

3. The battery cover as claimed in claim 2, characterized in that: The first threaded structure includes a threaded hole, and the second threaded structure includes a threaded column threadedly matched with the threaded hole, and / or the first threaded structure includes a threaded column, and the second threaded structure includes a threaded hole threadedly matched with the threaded column.

4. The battery cover as claimed in claim 2, characterized in that: In a first direction, the length of the connecting portion is less than or equal to the length of the inner wall of the mounting hole, and the first direction is a stacking direction of the substrate and the lead-out sheet.

5. The battery cover as claimed in claim 2, characterized in that: In a first direction, the length of the threaded portion on the pole is greater than or equal to the length of the connecting portion, and the first direction is a stacking direction of the substrate and the lead-out sheet.

6. The battery cover according to any one of claims 1 to 3, characterized in that: The substrate has a groove on one side in a first direction, the first direction being the stacking direction of the substrate and the lead-out plate, the groove has a bottom wall, the mounting hole is connected to the bottom wall of the groove, and at least part of the lead-out plate is accommodated in the groove.

7. The battery cover as claimed in claim 6, characterized in that: The groove has a side wall, and the lead-out plate and the side wall of the groove are spaced apart from each other.

8. The battery cover as claimed in claim 7, characterized in that: The groove has a first side wall and a second side wall opposite to each other, and the lead-out piece has a third side wall and a fourth side wall opposite to each other, the first side wall is used to be opposite to the third side wall, and the second side wall is used to be opposite to the fourth side wall, and on a plane perpendicular to the first direction, the minimum distance between the first side wall and the rotation center of the lead-out piece is greater than or equal to the maximum distance between the third side wall and the rotation center of the lead-out piece, and the minimum distance between the second side wall and the rotation center of the lead-out piece is greater than or equal to the maximum distance between the fourth side wall and the rotation center of the lead-out piece.

9. The battery cover according to any one of claims 1 to 3, characterized in that: The side wall of the pole has a protrusion, and the protrusion has a first wall surface on one side in a first direction, the first direction is the stacking direction of the substrate and the lead-out piece, and the substrate has a second wall surface on the side opposite to the first direction, and the first wall surface and the second wall surface are in contact with each other.

10. The battery cover as claimed in claim 9, characterized in that: The outer side of the edge of the mounting hole has a step structure, the second wall surface is at least a part of the inner wall surface of the step structure, and the battery cover plate also includes a sealing ring, which is located between the first wall surface and the second wall surface.

11. A battery, characterized in that: It comprises a pole ear and a battery cover plate as claimed in any one of claims 1 to 10, wherein the pole ear is connected to a side of a lead-out piece of the battery cover plate that is away from a pole of the battery cover plate.

12. An electrical equipment, characterized in that: The device comprises an electrical appliance and the battery as claimed in claim 11, wherein the electrical appliance and the battery are electrically connected.

Images