Connecting piece protection device

Abstract

The utility model relates to the technical field of insulation protection, and discloses a connecting piece protection device which is used for insulation protection of a connecting piece connected with a pole of a single battery cell. The connecting piece protection device comprises a first insulating part and a second insulating part, the first insulating part and the second insulating part are detachably connected to form a containing cavity used for containing a connecting piece, the containing cavity is provided with an avoiding opening allowing a pole to penetrate through, and the avoiding opening extends to the connecting face of the first insulating part and the second insulating part to form an opening. And the opening is used for inserting the pole into the avoiding opening. By adopting the protection device, insulation protection can be carried out on the connecting sheet connected with the pole of a single battery cell, and when the battery cell is subjected to a charge and discharge test, the two insulating parts are disassembled and separated. Compared with an existing adhesive tape insulation mode, the protective device can effectively solve the problems that residual adhesive is prone to being left on the pole or the connecting piece, the adhesive tape is prone to aging and falling off, and poor insulation is caused due to untight wrapping, the protective device can be repeatedly used, and the consumption of consumables is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of insulation protection technology, and in particular to a connecting piece protection device. Background Technology

[0002] Currently, when testing battery cells in the charging / discharging cabinet, the power lines and connecting plates are directly bolted together. Therefore, when testing a single battery cell, connecting plates need to be welded to the positive and negative terminals. The battery cell needs to be temporarily stored before and after testing, and the connecting plates welded to the positive and negative terminals need to be properly insulated. Currently, the insulation method involves wrapping the connecting plates with acetate cloth tape or masking tape. However, using tape to insulate the connecting plates has the following drawbacks: it easily leaves adhesive residue, ages and peels off, and incomplete wrapping leads to poor insulation. Furthermore, insulating tape is a non-reusable consumable, resulting in high waste. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a connecting piece protection device that can effectively insulate and protect the connecting piece, and can be reused to reduce losses.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A connector protection device is provided for insulating and protecting a connector connected to a terminal of a single battery cell. The connector protection device includes a first insulating member and a second insulating member, the first insulating member and the second insulating member being detachably connected to form a receiving cavity for accommodating the connector. The receiving cavity has a clearance opening for the terminal to pass through, the clearance opening extending to the connection surface of the first insulating member and the second insulating member to form an opening for the terminal to be inserted into the clearance opening.

[0006] As a further embodiment of the connecting piece protection device, the first insulating member has a first receiving groove for accommodating a portion of the connecting piece, and the second insulating member has a second receiving groove for accommodating the remaining portion of the connecting piece;

[0007] The first receiving groove has a first notch on one side wall that connects the first receiving groove to the outside of the first receiving groove, and the side of the first notch facing the second insulating member is an opening for inserting the pole post; or, the second receiving groove has a second notch on one side wall that connects the second receiving groove to the outside of the second receiving groove, and the side of the second notch facing the first insulating member is an opening for inserting the pole post.

[0008] When the first insulating member and the second insulating member are connected, the first receiving groove and the second receiving groove form the receiving cavity, and the second insulating member blocks the opening of the first notch to form the clearance opening, or the first insulating member blocks the opening of the second notch to form the clearance opening.

[0009] As a further embodiment of the connecting piece protection device, the first insulating member has a first receiving groove for accommodating a portion of the connecting piece, and a first notch is formed on one side wall of the first receiving groove, connecting the first receiving groove to the outside of the first receiving groove. The second insulating member has a second receiving groove for accommodating the remaining portion of the connecting piece, and a second notch is formed on one side wall of the second receiving groove, directly opposite the first notch. The second notch connects the second receiving groove to the outside of the second receiving groove. The opposite sides of the first notch and the second notch are both openings for inserting the pole post. When the first insulating member and the second insulating member are connected, the first receiving groove and the second receiving groove form the receiving cavity, and the first notch and the second notch form the clearance opening.

[0010] As a further embodiment of the connecting piece protection device, the first insulating member and the second insulating member are snapped together and fixed.

[0011] As a further embodiment of the connecting piece protection device, the first insulating member includes a first insulating member body and a first snap-fit ​​portion. The first insulating member body has a first receiving groove, and a first notch penetrates the second receiving groove along the Z direction on one side of the groove wall adjacent to the battery cell. The first snap-fit ​​portion protrudes from the first insulating member body on one side of the first insulating member body facing the second insulating member along the X direction. The second insulating member includes a second insulating member body and a second snap-fit ​​portion. The second insulating member body has a second receiving groove, and the opening of the second receiving groove faces the opening of the first receiving groove along the X direction. The second notch penetrates the second receiving groove along the Z direction on one side of the groove wall adjacent to the battery cell. The second snap-fit ​​portion is a slot structure provided on the outer wall of the second insulating member body. The first snap-fit ​​portion engages with the second snap-fit ​​portion, and the X direction is perpendicular to the Z direction.

[0012] As a further embodiment of the connecting piece protection device, the first locking portion includes a connecting block and a first clamping block. The connecting block protrudes from the first insulating component body on the side facing the second insulating component along the X direction, and the first clamping block protrudes from the connecting block on the side facing the second locking portion along the Z direction. A first locking groove is formed between the first clamping block and the first insulating component body. The second locking portion includes a second locking groove and a second clamping block. The second locking groove is located on the outer wall of the second receiving groove and corresponds to the connecting block. The side of the second locking groove away from the connecting piece along the Z direction is open, and the side of the second locking groove facing the first insulating component body along the X direction is also open. The second clamping block is located in the second locking groove and adjacent to the opening of the second locking groove along the X direction. When the first locking portion and the second locking portion are locked together, the second clamping block engages with the first locking groove, and the first clamping block is located in the second locking groove.

[0013] As a further embodiment of the connecting piece protection device, the side of the first clamping block facing the second slot along the Z direction is a guide surface. The guide surface has a first end adjacent to the first insulating component body and a second end away from the first insulating component body along the X direction. The distance between the bottom of the second slot along the Z direction and the first end is less than the distance between the bottom of the second slot along the Z direction and the second end.

[0014] As a further embodiment of the connecting piece protection device, the first snap-fit ​​portion is adjacent to or located at the center of the first insulating body along the Y direction, the second snap-fit ​​portion is adjacent to or located at the center of the second insulating body along the Y direction, and the X direction, the Y direction and the Z direction are perpendicular to each other.

[0015] As a further embodiment of the connecting piece protection device, the first insulating member has a first magnetic attraction part on the side facing the second insulating member, and the second insulating member has a second magnetic attraction part on the side facing the first insulating member, and the first magnetic attraction part and the second magnetic attraction part are magnetically connected.

[0016] As a further embodiment of the connecting piece protection device, an elastic insulating gasket is also included. The elastic insulating gasket is provided on the cavity wall opposite to the clearance opening, and the elastic insulating gasket abuts against the connecting piece located in the cavity.

[0017] Beneficial Effects: This invention connects two insulating components to form a cavity for accommodating the connecting piece. The electrode post connected to the connecting piece can be inserted into the clearance opening through its open portion. This protective device provides insulation protection for the connecting piece connected to the battery cell electrode post before and after battery cell charge / discharge testing. During battery cell charge / discharge testing, the two insulating components can be separated. Compared with existing tape insulation methods, this invention effectively solves the problems of residual adhesive on the connecting piece, tape aging and peeling, and poor insulation due to inadequate wrapping. Furthermore, the protective device of this invention is detachable and reusable, effectively reducing material consumption. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the connecting piece protection device according to Embodiment 1 of this utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the connecting piece protection device according to Embodiment 1 of this utility model. Figure 2 ;

[0021] Figure 3 This is an exploded view of the connecting piece protection device according to Embodiment 1 of this utility model;

[0022] Figure 4 This is a side view of the connecting piece according to Embodiment 1 of this utility model;

[0023] Figure 5 This is a side view of the first insulating component according to Embodiment 1 of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first insulating component in Embodiment 1 of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the second insulating component in Embodiment 1 of this utility model.

[0026] In the picture:

[0027] 1. Connecting piece;

[0028] 100. First insulating component; 101. First receiving groove; 102. First notch; 110. First insulating component body; 111. First insulating plate; 112. Second insulating plate; 113. First connecting plate; 120. First snap-fit ​​part; 121. Connecting block; 122. First clamping block; 1221. Guide surface; 123. First slot;

[0029] 200, Second insulating component; 201, Second receiving groove; 202, Second notch; 210, Second insulating component body; 211, Third insulating plate; 212, Fourth insulating plate; 213, Second connecting plate; 220, Second snap-fit ​​part; 221, Second snap-fit ​​groove; 222, Second clamping block. Detailed Implementation

[0030] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.

[0032] 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.

[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," etc., are merely used for distinction in description and have no special meaning.

[0034] Example 1

[0035] like Figures 1 to 7 As shown in the figure, this embodiment provides a connecting piece protection device for insulating and protecting the connecting piece 1 connected to the terminal of a single battery cell. The connecting piece protection device includes a first insulating member 100 and a second insulating member 200. The first insulating member 100 and the second insulating member 200 are detachably connected to form a receiving cavity for accommodating the connecting piece 1. The receiving cavity has a clearance opening for the terminal to pass through. The clearance opening extends to the connection surface of the first insulating member 100 and the second insulating member 200 to form an opening for the terminal to be inserted into the clearance opening.

[0036] In this embodiment, the first insulating member 100 and the second insulating member 200 are interconnected to form a receiving cavity for accommodating the connecting piece 1. During the process of the first insulating member 100 and the second insulating member 200 approaching each other, the electrode post connected to the connecting piece 1 can pass through the opening of the clearance opening and be inserted into the clearance opening. Using this connecting piece protection device, the connecting piece 1 connected to the battery cell electrode post can be insulated and protected before and after the battery cell charge and discharge test. When the battery cell needs to be charged and discharged, the first insulating member 100 and the second insulating member 200 can be separated. Compared with the existing tape insulation method, it can effectively solve the problems of residual adhesive on the connecting piece 1, tape aging and falling off easily, and poor insulation caused by incomplete wrapping. Moreover, the connecting piece protection device of this embodiment is detachable and reusable, which can effectively reduce consumable consumption.

[0037] In a further embodiment of the present invention, the first insulating member 100 has a first receiving groove 101 for accommodating a portion of the connecting piece 1. A first notch 102 is provided on one side of the groove wall of the first receiving groove 101, connecting the first receiving groove 101 with the outside of the first receiving groove 101. The second insulating member 200 has a second receiving groove 201 for accommodating the remaining portion of the connecting piece 1. A second notch 202 is provided on one side of the groove wall of the second receiving groove 201, directly opposite the first notch 102. The opposite sides of the first notch 102 and the second notch 202 are both open openings for inserting the pole post. The second notch 202 connects the second receiving groove 201 with the outside of the second receiving groove 201. When the first insulating member 100 and the second insulating member 200 are connected, the first receiving groove 101 and the second receiving groove 201 form a receiving cavity, and the first notch 102 and the second notch 202 form a clearance opening.

[0038] In use, firstly, the first notch 102 of the first insulating member 100 is aligned with the end where the electrode is connected to the battery cell, and the first insulating member 100 is inserted into a portion of the connecting piece 1, so that the portion of the connecting piece 1 is inserted into the first receiving groove 101 and the electrode is inserted through the opening of the first notch 102; then, the second notch 202 of the second insulating member 200 is aligned with the end where the electrode is connected to the battery cell, and the second insulating member 200 is inserted into another portion of the connecting piece 1, so that the portion of the connecting piece 1 is inserted into the second receiving groove 201 and the electrode is inserted through the opening of the second notch 202, until the first insulating member 100 and the second insulating member 200 are connected and fixed, so that the entire connecting piece 1 is located in the receiving cavity formed by the first receiving groove 101 and the second receiving groove 201, and the electrode of the battery cell is located in the clearance opening formed by the first notch 102 and the second notch 202, and the clearance opening is close to the battery cell, so that the entire connecting piece 1 can be insulated and protected.

[0039] Furthermore, in this embodiment, the first insulating member 100 and the second insulating member 200 are snapped together and fixed. The snap-fit ​​method is used to fix the first insulating member 100 and the second insulating member 200, which allows for quick assembly or disassembly of the first insulating member 100 and the second insulating member 200, thereby improving the ease of assembly and disassembly of the connecting piece protection device.

[0040] Furthermore, such as Figures 1 to 3 As shown, the first insulating member 100 includes a first insulating member body 110 and a first snap-fit ​​portion 120. The first insulating member body 110 has a first receiving groove 101, and a first notch 102 penetrates the groove wall of the first receiving groove 101 adjacent to the battery cell along the Z direction. The first snap-fit ​​portion 120 protrudes from the first insulating member body 110 on the side facing the second insulating member 200 along the X direction. The second insulating member 200 includes a second insulating member body 210 and a second snap-fit ​​portion 220. The second insulating member body 210 has a second receiving groove 201, and the opening of the second receiving groove 201 is directly opposite the opening of the first receiving groove 101 along the X direction. The second notch 202 penetrates the groove wall of the second receiving groove 201 adjacent to the battery cell along the Z direction. The second snap-fit ​​portion 220 is a slot structure provided on the outer wall of the second insulating member body 210. The first snap-fit ​​portion 120 and the second snap-fit ​​portion 220 are snap-fitted together, and the X direction is perpendicular to the Z direction.

[0041] In this embodiment, a first engaging portion 120 protrudes from the first insulating body 110 on the side facing the second insulating member 200 along the X direction, and a second engaging portion 220, which serves as a slot structure, is disposed on the outer wall of the second insulating body 210. When the first insulating body 110 and the second insulating body 210 come closer together along the X direction, the first engaging portion 120 extends into the second insulating body 210 and automatically engages with the second engaging portion 220. When disassembly is required, the first engaging portion 120 is pulled outward along the Z direction, and simultaneously the first insulating member 100 and the second insulating member 200 are pulled outward along the X direction. In this embodiment, the first insulating member 100 and the second insulating member 200 are easy to assemble and disassemble without the need for other auxiliary tools.

[0042] Furthermore, such as Figure 5 As shown, the first latching portion 120 includes a connecting block 121 and a first clamping block 122. The connecting block 121 protrudes from the first insulating body 110 on the side facing the second insulating member 200 in the X direction. The first clamping block 122 protrudes from the connecting block 121 on the side facing the second latching portion 220 in the Z direction. A first latching groove 123 is formed between the first clamping block 122 and the first insulating body 110. Figure 3 As shown, the second locking part 220 includes a second locking groove 221 and a second locking block 222. The second locking groove 221 is located on the outer wall of the second receiving groove 201 and corresponds to the connecting block 121. The side of the second locking groove 221 away from the connecting piece 1 in the Z direction and the side facing the first insulating body 110 in the X direction are both open structures. The second locking block 222 is located in the second locking groove 221 and adjacent to the open part of the second locking groove 221 in the X direction. When the first locking part 120 and the second locking part 220 are locked together, the second locking block 222 is locked and engaged with the first locking groove 123. The first locking block 122 is located in the second locking groove 221.

[0043] It is understandable that, since a first locking groove 123 is formed between the first locking block 122 and the first insulating component body 110, when the first locking part 120 extends into the second locking groove 221, the second locking block 222 engages within the first locking groove 123, thereby achieving a locking engagement between the first locking part 120 and the second locking part 220. Because the second locking groove 221 has an open structure on both the side away from the connecting piece 1 along the Z direction and the side facing the first insulating component body 110 along the X direction, it facilitates the first locking part 120 extending into the second locking groove 221 along the X direction. Furthermore, when the first locking part 120 extends into the second locking groove 221 along the X direction, the first locking part 120 deforms under the action of the second locking block 222. The open structure of the second locking groove 221 along the Z direction provides deformation space for the first locking part 120. When the second locking block 222 is fully engaged within the first locking groove 123, the first locking part 120 returns to its original shape. When it is necessary to disassemble the first insulating component 100 and the second insulating component 200, pull the first locking part 120 outward along the Z direction to deform the second locking block 222 until it is offset from the first locking groove 123 on one side along the X direction. Then, pull the first insulating component 100 and the second insulating component 200 outward along the X direction at the same time to achieve disassembly.

[0044] like Figure 5 As shown, the side of the first clamping block 122 facing the second slot 221 along the Z direction is a guide surface 1221. The guide surface 1221 has a first end adjacent to the plate of the first insulating member 100 and a second end away from the body of the first insulating member 110 along the X direction. The distance between the bottom of the second slot 221 along the Z direction and the first end is less than the distance between the bottom of the second slot 221 along the Z direction and the second end.

[0045] In this embodiment, the side of the first locking block 122 facing the second slot 221 along the Z direction is designated as the guide surface 1221. When the first locking part 120 extends into the second slot 221, the guide surface 1221 and the surface of the second locking block 222 are in line contact, reducing frictional resistance. Simultaneously, it guides the first locking part 120 as it is inserted into the second slot 221 along the X direction, reducing the difficulty of engaging the first locking part 120 and the second locking part 220. Furthermore, the design of the guide surface 1221 facilitates the outward pulling operation of the first locking part 120, reducing the difficulty of disassembly.

[0046] For example, the guide surface 1221 is an inclined surface. In other embodiments, the guide surface 1221 may also be designed as an arc-shaped surface structure, both of which can guide the first latching portion 120 into the second latching groove 221.

[0047] Furthermore, the gap between the second locking block 222 and the bottom of the second locking groove 221 along the X direction is greater than the size of the first locking block 122 along the X direction, so as to facilitate the outward pulling operation of the first locking part 120.

[0048] In this embodiment, the height of the second clamping block 222 along the Z direction is less than the depth of the second slot 221 along the Z direction, and the side of the connecting block 121 facing away from the second clamping block 222 along the Z direction is flush with the side of the first insulating body 110 and the second insulating body 210 along the Z direction.

[0049] like Figure 6 As shown, the first insulating body 110 includes a first insulating plate 111, a second insulating plate 112, and a first connecting plate 113. The first insulating plate 111 and the second insulating plate 112 are spaced apart along the Z direction. The first insulating plate 111 and the second insulating plate 112 are connected on one side along the X direction by the first connecting plate 113 to form a first receiving groove 101. The second insulating plate 112 has a first notch 102 extending through it along the Z direction. The first snap-fit ​​portion 120 is connected to the first insulating plate 111. Figure 7 As shown, the second insulating body 210 includes a third insulating plate 211, a fourth insulating plate 212, and a second connecting plate 213. The third insulating plate 211 and the fourth insulating plate 212 are spaced apart along the Z direction. The third insulating plate 211 and the fourth insulating plate 212 are connected by the second connecting plate 213 along the X direction away from the first insulating body 110 to form a second receiving groove 201. The fourth insulating plate 212 is provided with a second notch 202 through it along the Z direction. The second snap-fit ​​part 220 is provided on the third insulating plate 211 and adjacent to the first insulating body 110. The second snap-fit ​​part 220 is located on the side of the third insulating plate 211 away from the second notch 202 along the Z direction.

[0050] In this embodiment, when the connecting piece 1 is partially located in the first receiving groove 101, the first insulating plate 111 and the second insulating plate 112 are respectively located on both sides of the connecting piece 1 along the Z direction, and the second insulating plate 112 is located on the side of the first insulating plate 111 facing the battery cell and adjacent to the end face of the battery cell; when the other part of the connecting piece 1 is located in the second receiving groove 201, the third insulating plate 211 and the fourth insulating plate 212 are respectively located on both sides of the connecting piece 1 along the Z direction, and the fourth insulating plate 212 is located on the side of the third insulating plate 211 facing the battery cell and adjacent to the end face of the battery cell. The first insulating member 100 and the second insulating member 200 approach each other along the X direction until the first snap-fit ​​portion 120 snaps into the second snap-fit ​​portion 220. At this time, the connecting piece 1 is located in the receiving cavity formed by the closed first insulating member body 110 and the second insulating member body 210, and the pole is located in the clearance opening formed by the closed first notch 102 and the second notch 202. In this embodiment, the first snap-fit ​​part 120 is connected to the first insulating plate 111, and correspondingly, the second snap-fit ​​part 220 is disposed on the third insulating plate 211. This structural design facilitates the disassembly and assembly of the protection device.

[0051] The shapes of the first insulating plate 111, the second insulating plate 112, the third insulating plate 211, and the fourth insulating plate 212 are determined according to the shape of the connecting piece 1, and are not specifically limited. In a specific example, such as Figure 4 As shown, the connecting piece 1 is composed of a horizontal piece and two inclined pieces forming a V-shaped structure. Correspondingly, the shapes of the first insulating plate 111, the second insulating plate 112, the third insulating plate 211, and the fourth insulating plate 212 match the shape of the connecting piece 1, each including a horizontal plate and two inclined plates. The two inclined plates are located on both sides of the horizontal plate along the Y direction. The gap between the first insulating plate 111 and the second insulating plate 112 and the gap between the third insulating plate 211 and the fourth insulating plate 212 are slightly larger than the thickness of the connecting piece 1. The first insulating body 110 and the second insulating body 210 are symmetrical.

[0052] Furthermore, the first snap-fit ​​portion 120 is adjacent to or located at the center of the first insulating body 110 along the Y direction, and the second snap-fit ​​portion 220 is adjacent to or located at the center of the second insulating body 210 along the Y direction, with the X direction, Y direction and Z direction being perpendicular to each other.

[0053] For example, the first snap-fit ​​portion 120 is adjacent to or located at the center of the first insulating plate 111 along the Y direction, and the second snap-fit ​​portion 220 is adjacent to or located at the center of the third insulating plate 211 along the Y direction. This embodiment improves the connection stability between the first insulating body 110 and the second insulating body 210 by placing the first snap-fit ​​portion 120 at the center of the first insulating plate 111 along the Y direction and the second snap-fit ​​portion 220 at the center of the third insulating plate 211 along the Y direction.

[0054] Taking a V-shaped structure as an example, the first snap-fit ​​part 120 is located at the center of the horizontal plate of the first insulating plate 111 along the Y direction, the second snap-fit ​​part 220 is located at the center of the horizontal plate of the third insulating plate 211 along the Y direction, the second insulating plate 112 has a first notch 102, and the fourth insulating plate 212 has a second notch 202.

[0055] In other embodiments, the first insulating member 100 and the second insulating member 200 are magnetically fixed together to improve the ease of assembly and disassembly between them. Specifically, the first insulating member 100 has a first magnetic attraction part (not shown in the figure) on the side facing the second insulating member 200, and the second insulating member 200 has a second magnetic attraction part (not shown in the figure) on the side facing the first insulating member 100. The first magnetic attraction part and the second magnetic attraction part are magnetically connected. Exemplarily, the first magnetic attraction part is embedded in the first insulating member 100 and adjacent to the side of the first insulating member 100 facing the second insulating member 200, and the second magnetic attraction part is embedded in the second insulating member 200 and adjacent to the side of the second insulating member 200 facing the first insulating member 100. Through the embedded structure, the two opposite sides of the first insulating member 100 and the second insulating member 200 can be tightly connected, improving the insulation and protection effect of the connecting piece.

[0056] In this embodiment, the first magnetic attraction part is not limited to being embedded in the first insulating member 100, but can also be disposed on the surface of the first insulating member 100. The second magnetic attraction part is not limited to being embedded in the second insulating member 200, but can also be disposed on the surface of the second insulating member 200, similar to the magnetic switch structure of a refrigerator door, and will not be described in detail here.

[0057] In other embodiments, the snap-fit ​​and magnetic connection methods described in the above embodiments can be combined to further improve the tightness of the connection between the first insulating member 100 and the second insulating member 200.

[0058] During actual assembly, there is an assembly tolerance in the receiving cavity, meaning the space of the receiving cavity is slightly larger than the size of the connecting piece 1, so that the connecting piece 1 can be smoothly assembled into the receiving cavity. After assembly, there may be relative wobbling between the connecting piece 1 and the connecting piece protection device. In view of this, the connecting piece protection device in this embodiment is also provided with an elastic insulating gasket (not shown in the figure). Specifically, the elastic insulating gasket protrudes from the cavity wall of the receiving cavity and faces the clearance opening. The elastic insulating gasket abuts against the connecting piece 1 located in the receiving cavity. When the connecting piece 1 overcomes the elastic force of the elastic insulating gasket and is inserted into the corresponding first receiving groove 101 or second receiving groove 201, the elastic insulating gasket and the connecting piece 1 elastically abut against each other, so that the connecting piece 1 remains relatively fixed in the receiving cavity.

[0059] In this embodiment, the two insulating components are integrally injection molded structures, resulting in high structural stability.

[0060] Example 2

[0061] This embodiment is basically the same as the first embodiment above, except that only the first insulating member 100 has a first notch 102, and the second insulating member 200 does not have a notch (not shown in the figure, please refer to the figure of the first embodiment, and the same component names use the same figure references).

[0062] The first insulating member 100 has a first receiving groove 101 for receiving a portion of the connecting piece 1, and the second insulating member 200 has a second receiving groove 201 for receiving the remaining portion of the connecting piece 1.

[0063] A first notch 102 is provided on one side wall of the first receiving groove 101 to connect the first receiving groove 101 with the outside of the first receiving groove 101. The side of the first notch 102 facing the second insulating member 200 is an opening for inserting the pole post.

[0064] When the first insulating member 100 and the second insulating member 200 are connected, the first receiving groove 101 and the second receiving groove 201 form a receiving cavity, and the second insulating member 200 blocks the opening of the first notch 102 to form a clearance opening.

[0065] With the above structural design, when the connecting piece 1 is inserted into the first receiving groove 101, the pole passes through the opening of the first notch 102 and is inserted into the first notch 102. When the first insulating member 100 and the second insulating member 200 are connected, the first receiving groove 101 and the second receiving groove 201 form a receiving cavity. The connecting piece 1 is located entirely in the receiving cavity. The second insulating member 200 blocks the opening of the first notch 102, and the pole welded to the connecting piece 1 is located in the closed clearance opening.

[0066] Example 3

[0067] This embodiment is basically the same as the first embodiment above, except that only the second insulating member 200 has a second notch 202, and the first insulating member 100 does not have a notch (not shown in the figure, please refer to the figure of the first embodiment, and the same component names use the same figure references).

[0068] The first insulating member 100 has a first receiving groove 101 for receiving a portion of the connecting piece 1, and the second insulating member 200 has a second receiving groove 201 for receiving the remaining portion of the connecting piece 1.

[0069] The second receiving groove 201 has a second notch 202 on one side of the groove wall, which connects the second receiving groove 201 with the outside of the second receiving groove 201. The side of the second notch 202 facing the first insulating member 100 is an opening for inserting the pole post.

[0070] When the first insulating member 100 and the second insulating member 200 are connected, the first receiving groove 101 and the second receiving groove 201 form a receiving cavity, and the first insulating member 100 blocks the opening of the second notch 202 to form a clearance opening.

[0071] With the above structural design, when the connecting piece 1 is inserted into the second receiving groove 201, the pole passes through the opening of the second notch 202 and is inserted into the second notch 202. When the first insulating member 100 and the second insulating member 200 are connected, the first receiving groove 101 and the second receiving groove 201 form a receiving cavity. The connecting piece 1 is located entirely in the receiving cavity. The first insulating member 100 blocks the opening of the second notch 202, and the pole welded to the connecting piece 1 is located in the closed clearance opening.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tab protection device for insulating protection of a tab connected to a pole of a single cell, characterized by, The connecting piece protection device comprises a first insulating piece and a second insulating piece, the first insulating piece is detachably connected with the second insulating piece to form a containing cavity for containing the connecting piece, the containing cavity has an avoiding opening for the pole to pass through, the avoiding opening extends to the connecting surface of the first insulating piece and the second insulating piece to form an opening, and the opening is used for inserting the pole into the avoiding opening.

2. The tab protection device of claim 1, wherein The first insulating piece has a first containing groove for containing part of the connecting piece, and the second insulating piece has a second containing groove for containing the remaining part of the connecting piece. A side groove wall of the first containing groove is provided with a first notch for connecting the first containing groove with the outside of the first containing groove, and the first notch is opposite to the side of the second insulating piece and is an opening for inserting the pole; or a side groove wall of the second containing groove is provided with a second notch for connecting the second containing groove with the outside of the second containing groove, and the second notch is opposite to the side of the first insulating piece and is an opening for inserting the pole. When the first insulating piece and the second insulating piece are connected, the first containing groove and the second containing groove form the containing cavity, and the second insulating piece blocks the opening of the first notch to form the avoiding opening or the first insulating piece blocks the opening of the second notch to form the avoiding opening.

3. The tab protection device of claim 1, wherein, The first insulating piece has a first containing groove for containing part of the connecting piece, and a side groove wall of the first containing groove is provided with a first notch for connecting the first containing groove with the outside of the first containing groove. The second insulating piece has a second containing groove for containing the remaining part of the connecting piece, and a side groove wall of the second containing groove is provided with a second notch opposite to the first notch, the second notch connects the second containing groove with the outside of the second containing groove, and the opposite sides of the first notch and the second notch are openings for inserting the pole. When the first insulating piece and the second insulating piece are connected, the first containing groove and the second containing groove form the containing cavity, and the first notch and the second notch form the avoiding opening.

4. The tab protection device of claim 1, wherein The first insulating piece and the second insulating piece are clamped and fixed.

5. The tab protection device of claim 3, wherein, The first insulating piece comprises a first insulating piece body and a first clamping part, the first insulating piece body has the first containing groove, the first notch penetrates through the side groove wall of the second containing groove adjacent to the electric core in the Z direction, and the first clamping part is protruded on the side of the first insulating piece body facing the second insulating piece in the X direction. The second insulating piece comprises a second insulating piece body and a second clamping part, the second insulating piece body has the second containing groove, the groove opening of the second containing groove is opposite to the groove opening of the first containing groove in the X direction, the second notch penetrates through the side groove wall of the second containing groove adjacent to the electric core in the Z direction, and the second clamping part is a clamping groove structure arranged on the outer wall of the second insulating piece body. The first clamping part and the second clamping part are clamped and matched, and the X direction is perpendicular to the Z direction.

6. The tab protection device of claim 5, wherein, The first clamping part comprises a connecting block and a first clamping block, the connecting block protrudes from one side of the first insulating body along the X direction towards the second insulating body, the first clamping block protrudes from one side of the connecting block along the Z direction towards the second clamping part, and a first clamping groove is formed between the first clamping block and the first insulating body; the second clamping part comprises a second clamping groove and a second clamping block, the second clamping groove is located on the outer wall of the second accommodating groove and corresponds to the connecting block, one side of the second clamping groove away from the connecting piece along the Z direction is open, one side of the second clamping groove towards the first insulating body along the X direction is open, and the second clamping block is located in the second clamping groove and adjacent to the open side of the second clamping groove along the X direction, when the first clamping part and the second clamping part are clamped, the second clamping block and the first clamping groove are clamped and matched, and the first clamping block is located in the second clamping groove.

7. The tab protection device of claim 6, wherein, One side of the first clamping block along the Z direction towards the second clamping groove is a guide surface, the guide surface along the X direction has a first end adjacent to the first insulating body and a second end away from the first insulating body, and the distance between the bottom of the second clamping groove along the Z direction and the first end is less than the distance between the bottom of the second clamping groove along the Z direction and the second end.

8. The tab protection device of claim 5, wherein, The first clamping part is adjacent to or located at the center of the first insulating body along the Y direction, the second clamping part is adjacent to or located at the center of the second insulating body along the Y direction, and the X direction, the Y direction and the Z direction are perpendicular to each other.

9. The tab protector of claim 1, wherein, One side of the first insulating body towards the second insulating body is provided with a first magnetic attraction part, one side of the second insulating body towards the first insulating body is provided with a second magnetic attraction part, and the first magnetic attraction part and the second magnetic attraction part are magnetically connected.

10. The tab protection device of any of claims 1 to 9, wherein, The accommodating cavity is provided with an elastic insulating gasket on the cavity wall opposite to the avoiding opening, and the elastic insulating gasket abuts against the connecting piece located in the accommodating cavity.

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