Wiring structure of safe electric connector or metal conductive piece

Abstract

The utility model belongs to the technical field of wiring of products such as new energy storage and inverters, and particularly discloses a wiring structure of a safety type electric connector or a metal conductive part, which comprises a metal conductive part and a cable, a wire core on an electric connection end of the cable is connected with the metal conductive part in a welding or crimping mode, and the metal conductive part is connected with the metal conductive part in a welding or crimping mode. A plastic body is formed at the joint of the metal conductive part and the cable in an injection molding and sealing mode, and a wire core and an insulating layer on the electric connecting end of the cable are both located in the plastic body. According to the utility model, the cable core on the electric connection end of the cable is connected with the metal conductive member in a welding manner, the contact resistance at the connection part of the cable and the metal conductive member is reduced, and meanwhile, the connection part of the metal conductive member and the cable is sealed and formed through injection molding, and the connection part of the cable and the metal conductive member is subjected to insulation treatment; the reliability, stability and safety of connection are improved, and the service life of the energy storage system is effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of wiring of products such as new energy storage and inverters, and in particular relates to a wiring structure of a safety-type electric connector or a metal conductive part. Background Art

[0002] With the rapid development of new energy technologies, energy storage systems are increasingly used in the power sector. As an important component of energy storage systems, the wiring structure of products such as energy storage and inverters directly affects the safety and stability of the entire system.

[0003] The wiring structure of the existing electrical connectors or terminals of energy storage and inverter products is usually to rivet a metal sleeve on the wire core of the cable to form a wire nose, and then fix it with screws and nuts to electrically connect the cable to the metal conductive part. This wiring structure has the following defects:

[0004] (1) Since the internal connection wires are fastened with screws and nuts, the reliability and stability are poor. They will become loose over time, resulting in increased contact resistance after the connection is loosened. In addition, this wiring structure needs to be used in scenarios with high current and long-term operation (photovoltaic inverter products require a warranty of 30 years). If they become loose, the temperature will rise sharply, and in severe cases, fire or even explosion may occur, causing serious life-threatening accidents.

[0005] (2) Since the internal connecting wires are fastened with screws and nuts, which are not insulated and are not convenient to insulate, the safety is poor. As a result, the wiring structure is directly exposed inside the machine when it is energized, increasing safety hazards.

[0006] Therefore, the inventors are committed to designing a wiring structure to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a wiring structure of a safe electrical connector or a metal conductive part, which not only improves the reliability, stability and safety of the connection, but also reduces the contact resistance, effectively extending the service life of the energy storage system.

[0008] In order to achieve the above object, a technical solution adopted by the utility model is:

[0009] A wiring structure of a safety electrical connector or a metal conductive part, comprising a metal conductive part and a cable, wherein the wire core on the electrical connection end of the cable is connected to the metal conductive part by welding or crimping, and the connection between the metal conductive part and the cable is formed into a plastic body by injection molding, and the wire core and the insulating layer on the electrical connection end of the cable are both located in the plastic body.

[0010] As an improvement of the wiring structure of the safety electrical connector or metal conductive part of the utility model, the metal conductive part is a metal stud, and the connecting end of the metal stud extends outward along its axial direction to form a semi-annular connecting part. The wire core on the electrical connecting end of the cable is located in the limiting hole of the connecting part and is welded or riveted to the connecting part, and the connecting part is covered by the plastic body.

[0011] As an improvement to the wiring structure of the safety electrical connector or metal conductive part of the utility model, the metal stud and the outer wall of the connecting part are provided with external threads, the metal stud is coaxially arranged with the cable, and the wire core on the electrical connection end of the cable is inserted into the metal stud.

[0012] As an improvement of the wiring structure of the safety electrical connector or metal conductive part of the utility model, a nut and a sleeve are provided on the metal stud, the sleeve is located between the nut and the plastic body, the sleeve is threadedly connected to the metal stud through two screw sleeves, and a gasket is sandwiched between the two screw sleeves.

[0013] In order to achieve the above object, another technical solution adopted by the utility model is:

[0014] A wiring structure of a safety electrical connector or a metal conductive part, comprising a metal conductive part and a cable, wherein a wire core on an electrical connection end of the cable is connected to the metal conductive part by welding, and a connection between the metal conductive part and the cable is formed into a plastic body by injection molding, wherein the wire core and an insulating layer on the electrical connection end of the cable are both located in the plastic body.

[0015] As an improvement to the wiring structure of the safety electrical connector or metal conductive part of the utility model, the metal conductive part is a cylindrical metal column, and a socket is provided on the electrical connection end surface of the metal column. The wire core on the electrical connection end of the cable is inserted into the socket and welded or riveted to the metal column.

[0016] As an improvement of the wiring structure of the safety type electrical connector or the metal conductive member of the utility model, a nut is disposed on the outer sleeve of the metal column, and the nut is located in the plastic body.

[0017] In order to achieve the above object, another technical solution adopted by the utility model is:

[0018] A wiring structure of a safety electrical connector or a metal conductive part, comprising a metal conductive part and a cable, wherein a wire core on an electrical connection end of the cable is connected to the metal conductive part by welding, and a connection between the metal conductive part and the cable is formed into a plastic body by injection molding, wherein the wire core and an insulating layer on the electrical connection end of the cable are both located in the plastic body.

[0019] As an improvement to the wiring structure of the safety electrical connector or metal conductive member of the utility model, the metal conductive member is a U-shaped metal guide plate, and the two opposite ends of the metal guide plate are respectively bent to form bent portions, the wire core on the electrical connection end of the cable is welded to one of the bent portions, and the two bent portions are both located in the plastic body.

[0020] As an improvement to the wiring structure of the safety electrical connector or metal conductive part of the utility model, a locking stud is vertically penetrated through the center of the metal guide, the head of the locking stud is covered by the plastic body, the tail of the locking stud is sleeved with a locking nut, the metal guide and the back of the plastic body are jointly covered with a shell, and the locking nut is located outside the shell.

[0021] In order to achieve the above object, another technical solution adopted by the utility model is:

[0022] A wiring structure of a safety electrical connector or a metal conductive part, comprising a metal conductive part and a cable, wherein a wire core on an electrical connection end of the cable is connected to the metal conductive part by welding, and a connection between the metal conductive part and the cable is formed into a plastic body by injection molding, wherein the wire core and an insulating layer on the electrical connection end of the cable are both located in the plastic body.

[0023] As an improvement to the wiring structure of the safety electrical connector or metal conductive part of the utility model, the metal conductive part is a metal sheet, one edge of the metal sheet extends outward to form a protrusion, the wire core on the electrical connection end of the cable is welded to the protrusion, and the protrusion is located in the plastic body.

[0024] As an improvement of the wiring structure of the safety electrical connector or metal conductive part of the utility model, a fastening stud is vertically penetrated through the center of the metal sheet, the head of the fastening stud is covered by the plastic body, the tail of the fastening stud is sleeved with a fastening nut, the metal sheet and the back of the plastic body are jointly covered with a shell, and the fastening nut is located outside the shell.

[0025] Compared with the prior art, the wiring structure of the safety electrical connector or metal conductive part of the utility model utilizes the wire core on the electrical connection end of the cable to be connected with the metal conductive part by welding, thereby reducing the contact resistance at the connection between the cable and the metal conductive part. At the same time, the connection between the metal conductive part and the cable is sealed by injection molding, and the connection between the cable and the metal conductive part is insulated, which not only improves the reliability, stability and safety of the connection, but also effectively extends the service life of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a cross-sectional view of the wiring structure of the safety type electrical connector or the metal conductive member of the first embodiment of the utility model;

[0027] Figure 2 It is a three-dimensional exploded view of the wiring structure of the safety type electrical connector or metal conductive member of the first embodiment of the utility model;

[0028] Figure 3 It is a three-dimensional assembly diagram of a metal stud, a threaded sleeve and a nut in the first embodiment of the utility model;

[0029] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0030] Figure 5 It is an enlarged cross-sectional view of the wiring structure of the safety type electrical connector or the metal conductive member of the second embodiment of the utility model;

[0031] Figure 6 It is a three-dimensional structural diagram of the wiring structure of the safety type electrical connector or the metal conductive member of the second embodiment of the utility model;

[0032] Figure 7 It is a three-dimensional exploded view of the wiring structure of the safety electrical connector or metal conductive member of the second embodiment of the utility model;

[0033] Figure 8 It is an enlarged cross-sectional view of the wiring structure of the safety type electrical connector or the metal conductive member of the third embodiment of the utility model;

[0034] Fig. 9 It is a three-dimensional structural diagram of the wiring structure of the safety type electrical connector or the metal conductive member of the third embodiment of the utility model;

[0035] Fig.10 It is a three-dimensional exploded view of the wiring structure of the safety type electrical connector or metal conductive member of the third embodiment of the utility model;

[0036] Fig.11 It is an enlarged cross-sectional view of the wiring structure of the safety type electrical connector or the metal conductive member of the fourth embodiment of the utility model;

[0037] Fig.12 It is a three-dimensional structural diagram of the wiring structure of the safety type electrical connector or the metal conductive member of the fourth embodiment of the utility model;

[0038] Fig.13 It is a three-dimensional exploded view of the wiring structure of the safety electrical connector or the metal conductive member according to the fourth embodiment of the utility model.

[0039] Illustration Description:

[0040] 1. Cable; 11. Wire core; 2. Plastic body; 21. Shell; 3. Metal stud; 31. External thread; 32. Connecting part; 321. Limiting hole; 33. Sleeve; 331. Screw sleeve; 332. Washer; 34. Nut; 4. Metal column; 41. Socket; 42. Nut; 5. Metal guide; 51. Locking stud; 511. Locking nut; 52. Bending part; 6. Metal sheet; 61. Protruding part; 62. Fastening stud; 63. Fastening nut. DETAILED DESCRIPTION

[0041] The following is a detailed explanation of the implementation of the present invention in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention.

[0042] Embodiment 1

[0043] Reference Figures 1 to 4 A wiring structure of a safety electrical connector or a metal conductive part includes a metal conductive part, a cable 1 and a plastic body 2. The wire core 11 on the electrical connection end of the cable 1 is connected to the metal conductive part by welding or crimping. The connection between the metal conductive part and the cable 1 is formed by injection molding to form the plastic body 2. The wire core 11 on the electrical connection end of the cable 1 and the insulating layer on the electrical connection end of the cable 1 are both located in the plastic body 2.

[0044] Reference Figure 2 , Figure 3 and Figure 4 The metal conductive member of the present embodiment is specifically a metal stud 3, which is cylindrical, and one end of the metal stud 3 connected to the cable 1 is the electrical connection end. The connection end of the metal stud 3 extends outward along its axial direction to form a semi-circular connection portion 32, and the axis of the connection portion 32 is provided with a semi-circular limiting hole 321. The metal stud 3 and the outer wall of the connection portion 32 are jointly provided with an external thread 31. The cable 1 includes a core 11 and an insulating layer, the insulating layer is coated on the outside of the core 11, and the electrical connection end of the core 11 is exposed from the insulating layer. The electrical connection of the cable 1 The wire core 11 of the connecting end is located in the limiting hole 321 of the connecting part 32. In order to more firmly fix the wire core 11, the wire core 11 on the electrical connection end of the cable 1 is inserted into the metal stud 3. The wire core 11 on the electrical connection end of the cable 1 is welded or riveted to the connecting part 32. The entire connecting part 32 is covered by the plastic body 2 (that is, the connecting part 32 is located in the plastic body 2). When the cable 1 is welded to the metal stud 3, the metal stud 3 is coaxially arranged with the cable 1, and the free end of the cable 1 extends outside the plastic body 2 for connection with other components.

[0045] Reference Figure 1 and Figure 2In this embodiment, the metal stud 3 is also sleeved with a nut 34 and a sleeve 33. The sleeve 33 is located between the nut 34 and the plastic body 2. In order to fix the sleeve 33, the sleeve 33 is threadedly connected to the metal stud 3 through two screw sleeves 331. Specifically, the sleeve 33 is sleeved on one of the screw sleeves 331, and the screw sleeve 331 is sleeved on the metal stud 3. The other screw sleeve 331 is located in the gap between the nut 34 and the sleeve 33. A gasket 332 is sandwiched between the two screw sleeves 331. The two screw sleeves 331 and the nut 34 are all connected to the metal stud 3 in a threaded manner. The screw sleeve 331 is located at the tail of the metal stud 3.

[0046] Embodiment 2

[0047] Reference Figures 5 to 7 , is the second embodiment of the utility model. The wiring structure of the safety electrical connector or metal conductive part of this embodiment includes a metal conductive part, a cable 1 and a plastic body 2. The wire core 11 on the electrical connection end of the cable 1 is connected to the metal conductive part by welding. The connection between the metal conductive part and the cable 1 is formed by injection molding to form the plastic body 2. The wire core 11 on the electrical connection end of the cable 1 and the insulating layer on the electrical connection end of the cable 1 are both located in the plastic body 2.

[0048] Reference Figure 5 and Figure 7 The metal conductive part of this embodiment is specifically a cylindrical metal column 4, and a socket 41 is provided on the electrical connection end surface of the metal column 4. The socket 41 is coaxially arranged with the cable 1. The cable 1 includes a core 11 and an insulating layer. The insulating layer is coated on the outside of the core 11, and the electrical connection end of the core 11 is exposed from the insulating layer. A nut 42 is fixedly sleeved outside the metal column 4. The nut 42 is located in the plastic body 2. The core 11 on the electrical connection end of the cable 1 is inserted into the socket 41 and welded or riveted to the metal column 4.

[0049] Reference Figure 5 and Figure 6 In this embodiment, the plastic body 2 covers the entire outer wall of the metal column 4, and the plastic thickness of the plastic body 2 at the nut 42 is greater than the plastic thickness of other parts, so that the plastic body 2 and the metal column 4 are more firmly connected.

[0050] Embodiment 3

[0051] Reference Figures 8 to 10, is the third embodiment of the utility model. The wiring structure of the safety electrical connector or metal conductive part of this embodiment includes a metal conductive part, a cable 1 and a plastic body 2. The wire core 11 on the electrical connection end of the cable 1 is connected to the metal conductive part by welding. The connection between the metal conductive part and the cable 1 is formed by injection molding to form the plastic body 2. The wire core 11 on the electrical connection end of the cable 1 and the insulating layer on the electrical connection end of the cable 1 are both located in the plastic body 2.

[0052] Reference Figure 8 and Fig.10 The metal conductive member of this embodiment is specifically a U-shaped metal guide 5, and the two opposite ends of the metal guide 5 are respectively bent vertically toward one end of the cable 1 to form a bent portion 52, so that the entire metal guide 5 is U-shaped, and the wire core 11 on the electrical connection end of the cable 1 is welded to the inner surface of one of the bent portions 52 (that is, the cable 1 and the metal guide 5 together form an L shape), and a T-shaped locking stud 51 is vertically penetrated through the center of the metal guide 5, the head of the locking stud 51 is located on one side of the metal guide 5, and the tail of the locking stud 51 passes through the metal guide 5 and extends to the other side of the metal guide 5, and a locking nut 511 is sleeved on the tail of the locking stud 51.

[0053] Reference Figure 8 and Fig.10 The plastic body 2 of the present embodiment is in a cubic shape. When the metal guide 5, the electrical connection end of the cable 1 and the locking stud 51 are jointly injection molded to form the plastic body 2 of the present embodiment, the plastic body 2 is located on the side of the metal guide 5 having the bent portion 52, and the two bent portions 52, the head of the locking stud 51 and the bent side of the metal guide 5 are all covered with plastic, so that the two bent portions 52, the head of the locking stud 51 and the two bent portions 52 are all located in the plastic body 2, and the free end of the cable 1 extends beyond the front side of the plastic body 2. In the present embodiment, the metal guide 5 and the back side of the plastic body 2 are also jointly covered with a shell 21, and the locking nut 511 is located outside the shell 21.

[0054] Embodiment 4

[0055] Reference Figures 11 to 13 , is the fourth embodiment of the utility model. The wiring structure of the safety electrical connector or metal conductive part of this embodiment includes a metal conductive part, a cable 1 and a plastic body 2. The wire core 11 on the electrical connection end of the cable 1 is connected to the metal conductive part by welding. The connection between the metal conductive part and the cable 1 is formed by injection molding to form the plastic body 2. The wire core 11 on the electrical connection end of the cable 1 and the insulating layer on the electrical connection end of the cable 1 are both located in the plastic body 2.

[0056] Reference Fig.11 and Fig.13The metal conductive member of the present embodiment is specifically a T-shaped metal sheet 6, one edge of the metal sheet 6 extends outward to form a protrusion 61, and a T-shaped fastening stud 62 is vertically penetrated through the center of the metal sheet 6, the head of the fastening stud 62 is located on one side of the metal sheet 6, the tail of the fastening stud 62 passes through the metal sheet 6 and extends to the other side of the metal sheet 6, and a fastening nut 63 is sleeved on the tail of the fastening stud 62. In the present embodiment, the wire core 11 on the electrical connection end of the cable 1 is welded to the protrusion 61, and the protrusion 61 is located in the plastic body 2.

[0057] Reference Fig.11 and Fig.13 The plastic body 2 of the present embodiment is in the shape of a long strip. When the metal sheet 6, the electrical connection end of the cable 1 and the fastening stud 62 are jointly injection molded to form the plastic body 2 of the present embodiment, the plastic body 2 is located on the side where the metal sheet 6 is welded, and the protrusion 61, the head of the fastening stud 62, the welding side of the metal sheet 6 and the electrical connection end of the cable 1 are all covered by plastic, so that the protrusion 61, the head of the fastening stud 62 and the electrical connection end of the cable 1 are all located in the plastic body 2, and the free end of the cable 1 extends beyond the front side of the plastic body 2. In the present embodiment, the metal sheet 6 and the back side of the plastic body 2 are also jointly covered with a shell 21, and the fastening nut 63 is located outside the shell 21.

[0058] The wiring structure of the safety electrical connector or metal conductive part of the utility model utilizes the wire core 11 on the electrical connection end of the cable 1 to be connected with the metal conductive part by welding, thereby reducing the contact resistance at the connection between the cable 1 and the metal conductive part. At the same time, the connection between the metal conductive part and the cable 1 is sealed by injection molding, and the connection between the cable 1 and the metal conductive part is insulated, which not only improves the reliability, stability and safety of the connection, but also effectively prolongs the service life of the energy storage system.

[0059] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A wiring structure of a safety electrical connector or a metal conductive member, characterized in that: It includes a metal conductive part and a cable, wherein the wire core on the electrical connection end of the cable is connected to the metal conductive part by welding or crimping, and the connection between the metal conductive part and the cable is formed into a plastic body by injection molding, and the wire core and the insulating layer on the electrical connection end of the cable are both located in the plastic body.

2. The wiring structure of the safety electrical connector or metal conductive member according to claim 1, characterized in that: The metal conductive part is a metal stud, and the connecting end of the metal stud extends outward along its axial direction to form a semi-annular connecting portion. The wire core on the electrical connecting end of the cable is located in the limiting hole of the connecting portion and is welded or riveted to the connecting portion, and the connecting portion is covered by the plastic body.

3. The wiring structure of the safety electrical connector or metal conductive member according to claim 2, characterized in that: External threads are arranged on the outer walls of the metal stud and the connecting portion, the metal stud is coaxially arranged with the cable, and the wire core on the electrical connection end of the cable is inserted into the metal stud.

4. The wiring structure of the safety electrical connector or metal conductive member according to claim 3, characterized in that: A nut and a sleeve are sleeved on the metal stud, the sleeve is located between the nut and the plastic body, the sleeve is threadedly connected to the metal stud through two screw sleeves, and a gasket is sandwiched between the two screw sleeves.

5. The wiring structure of the safety electrical connector or metal conductive member according to claim 1, characterized in that: The metal conductive member is a cylindrical metal column, and a plug hole is provided on the electrical connection end surface of the metal column. The wire core on the electrical connection end of the cable is inserted into the plug hole and welded or riveted to the metal column.

6. The wiring structure of the safety electrical connector or metal conductive member according to claim 5, characterized in that: The outer sleeve of the metal column is provided with a nut, and the nut is located in the plastic body.

7. The wiring structure of the safety electrical connector or metal conductive member according to claim 1, characterized in that: The metal conductive member is a U-shaped metal guide plate, and the two opposite ends of the metal guide plate are respectively bent to form bent parts. The wire core on the electrical connection end of the cable is welded to one of the bent parts, and the two bent parts are both located in the plastic body.

8. The wiring structure of the safety type electrical connector or the metal conductive member according to claim 7, characterized in that: A locking stud is vertically passed through the center of the metal guide, the head of the locking stud is covered by the plastic body, the tail of the locking stud is sleeved with a locking nut, the metal guide and the back of the plastic body are jointly covered with a shell, and the locking nut is located outside the shell.

9. The wiring structure of the safety electrical connector or metal conductive member according to claim 1, characterized in that: The metal conductive member is a metal sheet, an edge of the metal sheet extends outward to form a protrusion, the wire core on the electrical connection end of the cable is welded to the protrusion, and the protrusion is located in the plastic body.

10. The wiring structure of the safety electrical connector or metal conductive member according to claim 9, characterized in that: A fastening stud is vertically passed through the center of the metal sheet, the head of the fastening stud is covered by the plastic body, the tail of the fastening stud is sleeved with a fastening nut, the metal sheet and the back of the plastic body are jointly covered with a shell, and the fastening nut is located outside the shell.

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