Grounding bolt assembly for new energy automobile battery pack

Abstract

A grounding bolt assembly for a new energy automobile battery pack is characterized in that the grounding bolt assembly comprises a grounding bolt (1), a screwing nut (2) and a cover plate (3), the screwing nut (2) is screwed on the grounding bolt (1), and the cover plate (3) is pressed on an opening portion of the top end of the grounding bolt (1); according to the grounding terminal, nut loosening caused by vibration of a vehicle body can be reduced, meanwhile, the conductivity of the grounding terminal is improved, rotation of the grounding terminal can be effectively prevented, and the torque of unscrewing and screwing of a grounding bolt and a screwing nut is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy vehicle battery packs, and specifically relates to a grounding bolt assembly for a new energy vehicle battery pack. Background Art

[0002] The grounding bolts used in new energy vehicle battery packs are generally composed of grounding bolts and tightening nuts. During the assembly process, problems such as terminal rotation and poor contact may occur. In order to solve the problem of terminal rotation, a bent stopper is commonly used to add a bent stopper to the terminal. However, this method reduces the assembly efficiency during the assembly operation. In addition, the loosening and tightening torque of the bolts and nuts is too small. When the loosening and tightening torque is too large, the threads are prone to slippage. Utility Model Content

[0003] The purpose of the utility model is to provide a grounding bolt assembly for a new energy vehicle battery pack in response to the defects of the above-mentioned existing grounding bolts for new energy vehicle battery packs, which can reduce the loosening of the nut caused by the vibration of the vehicle body, while improving the conductivity of the grounding terminal, effectively preventing the rotation of the grounding terminal, and increasing the loosening and tightening torque of the grounding bolt and the tightening nut.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A grounding bolt assembly for a new energy vehicle battery pack, characterized in that it comprises a grounding bolt, a tightening nut and a cover plate, wherein the tightening nut is screwed onto the grounding bolt, and the cover plate is pressed onto the mouth of the top end of the grounding bolt;

[0006] The grounding bolt comprises a welding portion, a transition portion, a first flange, a first conical surface, a first threaded portion and a guide head portion, and the welding portion, the transition portion, the first flange, the first conical surface, the first threaded portion and the guide head portion are sequentially combined to form a grounding bolt as a whole;

[0007] The tightening nut includes a nut body, a contact portion is arranged at one end of the nut body, a second flange extends from the outer edge close to the contact portion, a second conical surface is arranged on one side of the inner cavity of the nut body close to the contact portion, a second threaded portion is arranged on one side of the inner cavity of the nut body close to the second conical surface, a groove is arranged at the inner cavity mouth of the other end of the nut body, and a hexagonal portion is arranged on the outer edge surface of the other end of the nut body.

[0008] Furthermore, the cover plate comprises a cover plate body, and a third conical surface is arranged on the outer edge surface of the cover plate body.

[0009] Furthermore, the cone angle of the welding portion of the grounding bolt is 9°±2°.

[0010] Furthermore, the slope of the first conical surface in the grounding bolt is 7:24.

[0011] Furthermore, the cone surface slope of the second cone surface in the tightening nut is 7:24.

[0012] Beneficial Effects

[0013] The utility model provides a grounding bolt assembly for a new energy vehicle battery pack, which can reduce the loosening of a nut caused by the vibration of the vehicle body, while improving the conductivity of the grounding terminal, effectively preventing the rotation of the grounding terminal, and increasing the loosening and tightening torque of the grounding bolt and the tightening nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 This is a product diagram of a grounding bolt assembly in an embodiment of the utility model;

[0015] Attached Figure 2 This is an exploded view of the grounding bolt assembly in the embodiment of the utility model;

[0016] Attached Figure 3 This is a product diagram of a grounding bolt in an embodiment of the utility model;

[0017] Attached Figure 4 This is a front view of a grounding bolt in an embodiment of the utility model;

[0018] Attached Figure 5 This is a product diagram of a tightening nut in an embodiment of the utility model;

[0019] Attached Figure 6 This is a front view of a tightening nut in an embodiment of the utility model;

[0020] Attached Figure 7 This is a schematic diagram of the structure of the tightening nut in the embodiment of the utility model;

[0021] Attached Figure 8 This is a schematic diagram of a cover plate in an embodiment of the utility model;

[0022] Attached Fig. 9 It is a schematic diagram of the installation of an embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0025] 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 this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0028] Example

[0029] As attached Figure 1 and 2 As shown, a grounding bolt for a new energy vehicle battery pack is characterized in that it comprises a grounding bolt 1, a tightening nut 2 and a cover plate 3, wherein the tightening nut 2 is screwed onto the grounding bolt 1, and the cover plate 3 is pressed onto the mouth of the top end of the grounding bolt 1;

[0030] As attached Figure 3 and 4As shown, the grounding bolt 1 includes a welding portion 101, a transition portion 102, a first flange 103, a first conical surface 104, a first threaded portion 105 and a guide head portion 106, and the welding portion 101, the transition portion 102, the first flange 103, the first conical surface 104, the first threaded portion 105 and the guide head portion 106 are sequentially combined to form the grounding bolt 1 as a whole;

[0031] As attached Figure 5 , 6 and 7, the tightening nut 2 includes a nut body 200, a contact portion 201 is arranged at one end of the nut body 200, a second flange 202 is extended from the outer edge close to one end of the contact portion 201, a second conical surface 203 is arranged on the side of the inner cavity of the nut body 200 close to the contact portion 201, a second threaded portion 204 is arranged on the side of the inner cavity of the nut body 200 close to the second conical surface 203, a groove 205 is arranged at the inner cavity mouth of the other end of the nut body 200, and a hexagonal portion 206 is arranged on the outer edge surface of the other end of the nut body 200.

[0032] As attached Figure 8 As shown, the cover plate 3 includes a cover plate body 300, and a third conical surface 301 is provided on the outer edge of the cover plate body 300. The conical surface angle of the welding portion 101 in the grounding bolt 1 is 9°±2°. The conical surface slope of the first conical surface 104 in the grounding bolt 1 is 7:24. The conical surface slope of the second conical surface 203 in the tightening nut 2 is 7:24.

[0033] The main installation process of the grounding bolt for the new energy vehicle battery pack provided in this embodiment is as shown in the attached figure. Fig. 9 The specific description is as follows:

[0034] First, Fig. 9 ① The grounding bolt 1 is welded to the frame or housing 100 by a stud welding gun, and then Fig. 9 ②Put the terminal block 4 (provided by the OEM) on the first conical surface (slope 7:24) 104 of the grounding bolt 1. Fig. 9 ③ Manually tighten the tightening nut 2 through the first threaded portion 105. During the tightening process, the grounding terminal 4 is gradually pressed against the first conical surface 104 until the first flange 103. When it cannot be turned manually, use a wrench to tighten the hexagonal portion 206 until it is locked. While locking, the first conical surface (slope 7:24) 104 and the second conical surface (slope 7:24) 203 fit together, and the 7:24 slope ensures fit and locking.

[0035] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the utility model shall be protected within the scope defined by the attached claims.

Claims

1. A grounding bolt assembly for a new energy vehicle battery pack, characterized in that: It comprises a grounding bolt (1), a tightening nut (2) and a cover plate (3), wherein the tightening nut (2) is screwed onto the grounding bolt (1), and the cover plate (3) is pressed onto the top end of the grounding bolt (1); The grounding bolt (1) comprises a welding portion (101), a transition portion (102), a first flange (103), a first conical surface (104), a first threaded portion (105) and a guide head portion (106); the welding portion (101), the transition portion (102), the first flange (103), the first conical surface (104), the first threaded portion (105) and the guide head portion (106) are sequentially combined to form the grounding bolt (1) as a whole; The tightening nut (2) comprises a nut body (200), a contact portion (201) is arranged at one end of the nut body (200), a second flange (202) is extended from the outer edge of one end close to the contact portion (201), a second conical surface (203) is arranged on one side of the inner cavity of the nut body (200) close to the contact portion (201), a second threaded portion (204) is arranged on one side of the inner cavity of the nut body (200) close to the second conical surface (203), a groove (205) is arranged at the inner cavity mouth of the other end of the nut body (200), and a hexagonal portion (206) is arranged on the outer edge surface of the other end of the nut body (200).

2. A grounding bolt assembly for a new energy vehicle battery pack as claimed in claim 1, characterized in that: The cover plate (3) comprises a cover plate body (300), and a third conical surface (301) is provided on the outer edge surface of the cover plate body (300).

3. A grounding bolt assembly for a new energy vehicle battery pack as claimed in claim 1, characterized in that: The cone angle of the welding portion (101) in the grounding bolt (1) is 9°±2°.

4. A grounding bolt assembly for a new energy vehicle battery pack as claimed in claim 1, characterized in that: The first conical surface (104) in the grounding bolt (1) has a conical surface slope of 7:

24.

5. A grounding bolt assembly for a new energy vehicle battery pack as claimed in claim 1, characterized in that: The conical surface slope of the second conical surface (203) in the tightening nut (2) is 7:24.

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