Connecting bolt for new energy automobile battery module

Abstract

The utility model discloses a connecting bolt for a new energy automobile battery module, which comprises a bolt body, an insulating bolt cap is arranged at the bolt head of the bolt body, and an insulating end is arranged at the tail end of the bolt body. According to the connecting bolt for the new energy automobile battery module disclosed by the utility model, reliable assembly is realized, and meanwhile, the insulating property of the connecting bolt is ensured.

Description

Technical Field

[0001] The utility model relates to a connecting bolt, in particular to a connecting bolt for a battery module of a new energy vehicle. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source (or use conventional automotive fuels and adopt new on-board power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. Battery modules are used to provide power in some vehicles. In order to achieve internal and external conductive connections in existing battery modules, electrode lead-out structures are usually designed on the battery pack shell. The electrode lead-out structure is electrically connected to the battery inside and to the cable outside to achieve the transmission of electrical energy from the inside to the outside.

[0003] In the prior art, the electrode lead-out structure usually uses a conductive sheet and a fastening bolt to achieve electrical connection between the conductive sheet and the structure in the battery pack. The fastening bolt is a conventional bolt structure, which is mainly used to connect the conductive sheet to the battery pack. In order to ensure the conductivity and the tightness of the connection, the bolt is usually made of alloy material, which makes the bolt conductive as a whole. This poses a certain safety hazard for later power-on use. Therefore, an insulating cap structure needs to be set on the outside in actual use, which undoubtedly increases the subsequent assembly process and also causes the problem of forgetting. Utility Model Content

[0004] Purpose of the utility model: In order to solve the deficiencies of the prior art, the utility model provides a connecting bolt for a new energy vehicle battery module, which achieves reliable assembly while ensuring its insulation performance.

[0005] The technical solution adopted by the utility model is: a connecting bolt for a new energy vehicle battery module, comprising a bolt body, an insulating bolt cap is provided at the bolt head of the bolt body, and an insulating terminal is provided at the end of the bolt body.

[0006] Preferably, the bolt body comprises a bolt head, a polished rod section, a threaded section and a guide section, and a sheet-shaped conductive ring is provided between the bolt head and the polished rod section.

[0007] Preferably, the outer diameter of the wire end is smaller than the outer diameter of the threaded section, and the insulating end is arranged at the end of the conductive section.

[0008] Preferably, the bolt head is embedded in the insulating bolt cap, and one side of the conductive ring corresponding to the bolt head and all around the conductive ring are covered by the insulating bolt cap.

[0009] Preferably, the outer end surface of the insulating plug cap is an 18° inclined structure, and a plum blossom screw-fitting portion extends outward in the middle.

[0010] Beneficial effects: The connecting bolt for a new energy vehicle battery module disclosed by the utility model has the following effects: the insulating part is injected into the bolt head to ensure the insulation performance of the connecting bolt after being fastened and assembled, eliminating the step of additionally assembling the insulating cap at a later stage;

[0011] The end of the bolt body is provided with an insulating end to prevent the bottom of the bolt body from contacting other metals after being screwed and installed, thereby improving its insulation performance;

[0012] The conductive ring, the polished rod section and the threaded section structure of the bolt body can realize fastening assembly while ensuring the contact surface with the external conductive sheet to ensure electrical connection performance;

[0013] The design of the plum blossom screw-on part enables direct screw-on of the connecting bolts without the need for external tools, thus improving the convenience of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of the embodiment of the utility model Figure 1 ;

[0015] Figure 2 This is the overall structure 2 of the embodiment of the utility model;

[0016] Figure 3 It is a side view of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] The utility model discloses a connecting bolt for a new energy vehicle battery module, the structure of which is as follows: Figures 1 to 3 As shown, it includes a bolt body 1, an insulating bolt cap 2 injection-molded at one end of the bolt body, and an insulating end head 3 injection-molded at the other end of the bolt body. The bolt body is made of alloy steel to ensure the overall conductive performance, and the insulating bolt cap and the insulating end head are made of plastic to ensure the insulating performance.

[0019] Specifically, the bolt body has a bolt head (not shown), a bare rod section 11, a threaded section 12 and a guide end 13, wherein a sheet-shaped conductive ring 14 is provided between the bare rod section and the bolt head, the threaded section is screwed into the assembly hole, and its thread is of M5-6 specification, the outer diameter of the guide section is smaller than the outer diameter of the threaded section, and is used to improve the accuracy during assembly and insertion, the bare rod section and the conductive ring are connected to the external conductive sheet to improve the electrical connection performance, and when in use, the bolt body passes through the conductive sheet and is screwed into the mounting hole, at which time the conductive sheet fits the conductive ring of the bolt body.

[0020] The insulating bolt cap is injection molded on the outside of the bolt head, and the side of the conductive ring corresponding to the bolt head and the surrounding areas of the conductive ring are also covered by the insulating bolt cap, ensuring that the exposed part of the bolt body after screwing is completed is wrapped with the insulating bolt cap. The outer end face of the insulating bolt cap is an inclined plane, and the inclination angle a of the inclined plane is 18°. At the same time, a plum blossom screwing portion 21 extends outward from the middle of the outer end of the insulating bolt cap. This structure can be screwed together by hand without the need for additional tools.

[0021] The insulating terminal is injection-molded at the end of the guide section to prevent the guide section from contacting other metal parts inside the battery module, thereby improving the insulation performance.

[0022] The technical content and technical features of the utility model have been disclosed as above. However, technicians familiar with the field may still make various substitutions and modifications without departing from the spirit of the utility model based on the teachings and disclosures of the utility model. Therefore, the protection scope of the utility model should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications without departing from the utility model and be covered by the claims of this patent application.

Claims

1. A connecting bolt for a new energy vehicle battery module, comprising a bolt body, characterized in that: An insulating bolt cap is arranged at the bolt head of the bolt body, and an insulating end is arranged at the end of the bolt body. The bolt body comprises a bolt head, a bare rod section, a threaded section and a guide section, and a sheet-shaped conductive ring is arranged between the bolt head and the bare rod section.

2. A connecting bolt for a new energy vehicle battery module according to claim 1, characterized in that: The outer diameter of the guide section is smaller than the outer diameter of the threaded section, and the insulating end is arranged at the end of the conductive section.

3. A connecting bolt for a new energy vehicle battery module according to claim 1, characterized in that: The bolt head is embedded in the insulating bolt cap, and one side of the conductive ring corresponding to the bolt head and the surroundings of the conductive ring are all covered by the insulating bolt cap.

4. A connecting bolt for a new energy vehicle battery module according to claim 3, characterized in that: The outer end surface of the insulating plug cap is an 18° inclined structure, and a plum blossom screw-fitting portion extends outward in the middle.

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