A power terminal

Abstract

The present invention discloses a power terminal, which belongs to the field of connector technology. The power terminal includes a first terminal assembly, which includes a first mounting rod, a first copper busbar and a bushing, wherein the first mounting rod includes a first rod portion and a first head connected to the first rod portion, and the first head portion is provided with an end connection portion on the end face close to the first rod portion, and the first rod portion is provided with a rod connection portion along the circumference, and the rod connection portion is provided close to the first head portion; the first copper busbar includes a first connection portion and a second connection portion, the first end face of the first connection portion is connected to the end connection portion, and the second connection portion is used for electrical connection with the outside; the bushing is sleeved on the first rod portion and connected to the rod connection portion, the bushing abuts against the second end face of the first connection portion, and the second end face is arranged opposite to the first end face. The power terminal of the present invention has high structural connection strength and good reliability of current conduction by providing the rod connection portion and the end connection portion.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a power terminal. Background Art

[0002] The IBSG (Integrated Belt-driven Starter / Generator) system is powered by a power supply through a power terminal. Specifically, a first terminal assembly and a second terminal assembly are provided on the power terminal for connecting the power supply and the IBSG system. The first terminal assembly and the second terminal assembly are connected by injection-molded plastic. The first terminal assembly includes a first mounting rod and a first copper busbar. The first mounting rod is locked and connected to the power output terminal, and is transmitted to the IBSG system through the first copper busbar. Due to dustproof and waterproof design requirements, a bushing structure is provided on the first mounting rod. After injection molding, the bushing will form a closed cavity with the surrounding plastic retaining wall. At the same time, it will also serve to distinguish the first terminal assembly from the second terminal assembly to prevent incorrect connection. Since the first mounting rod has poor conductivity, when in use, after the first mounting rod is locked and connected to the power output terminal, the power output terminal contacts the end face of the bushing to achieve electrical connection.

[0003] In the prior art, the first mounting rod, first copper busbar cable, and bushing are positioned by injection molding plastic. However, during the injection molding and pressure-holding process, it is difficult to ensure a gap-free connection between the bushing and the first copper busbar cable. If there is a gap, molten plastic may flow into it. After solidification, the plastic between the bushing and the first copper busbar cable becomes non-conductive, affecting current conduction between the bushing and the first copper busbar cable. This can also increase contact resistance and cause quality issues such as localized overheating after power is applied. Summary of the Invention

[0004] The object of the present invention is to provide a power terminal that improves structural connection strength and reliability of current conduction.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A power terminal includes an insulating base and a first terminal assembly embedded in the insulating base, wherein the first terminal assembly includes:

[0007] a first mounting rod, the first mounting rod comprising a first rod portion and a first head portion connected to the first rod portion, the first head portion being provided with an end connecting portion on an end surface close to the first rod portion, the first rod portion being provided with a rod connecting portion along a circumferential direction, the rod connecting portion being provided close to the first head portion;

[0008] A first copper busbar cable, the first copper busbar cable comprising a first connecting portion and a second connecting portion, wherein a first end surface of the first connecting portion is connected to the end connecting portion, and the second connecting portion is used for electrical connection to the outside;

[0009] The bushing is sleeved on the first rod portion and connected to the rod portion connecting portion. The bushing abuts against the second end surface of the first connecting portion, and the second end surface is arranged opposite to the first end surface.

[0010] Optionally, the radial dimension of the rod connecting portion is greater than the radial dimension of the first rod portion, and the bushing is interference fit or riveted to the rod connecting portion.

[0011] Optionally, the rod connecting portion includes a protruding bushing protruding along the radial direction of the first rod portion, and the bushing abuts against the circumferential surface of the first rod portion and the protrusion.

[0012] Optionally, the protrusion is a first reinforcing rib provided along the length direction of the first rod portion.

[0013] Optionally, a plurality of first reinforcing ribs are arranged at intervals along the circumference of the first rod portion, and a spacing groove is formed between two adjacent first reinforcing ribs. When connected, the bushing is squeezed into the spacing groove.

[0014] Optionally, the protrusion is a second reinforcing rib arranged along the circumference of the first rod portion.

[0015] Optionally, a plurality of second reinforcing ribs are arranged at intervals along the axial direction of the first rod portion, and a spacing groove is formed between two adjacent second reinforcing ribs. When connected, the bushing is squeezed into the spacing groove.

[0016] Optionally, the end connection portion includes a boss provided on the first head portion, the boss is connected to the first connection portion, and the first connection portion abuts against an end surface of the first head portion close to the first rod portion.

[0017] Optionally, the end connection portion includes a plurality of bosses, the plurality of bosses are arranged at intervals, and a spacing groove is formed between two adjacent bosses. When connected, the first connection portion is squeezed into the spacing groove.

[0018] Optionally, a mounting hole is provided on the first connecting part, and the first connecting part is mounted on the first rod part through the mounting hole. A groove is provided between the rod connecting part and the first head part. When the first connecting part is connected to the end connecting part, an extrusion part is formed on the mounting hole, and the extrusion part is provided in the groove.

[0019] Optionally, the longitudinal section of the first mounting rod is T-shaped, the longitudinal section of the first copper busbar is L-shaped, and the first connecting portion is sleeved on the first rod portion.

[0020] Optionally, the first mounting rod is a bolt.

[0021] Optionally, the bushing is connected to the second end surface of the first connecting portion by welding.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides a power terminal, in which an insulating base is used to embed a first terminal assembly, so that a first mounting rod, a first copper busbar and a bushing are fixedly connected, which not only plays a positioning role, but also prevents the first terminal assembly from being damaged by external forces, and plays a role of insulation protection; when in use, the first rod portion is connected to the first external connector, the first external connector abuts against the end of the bushing away from the first head, and the second connecting portion is connected to the second external connector, so that the first external connector is electrically connected to the second external connector through the bushing and the first copper busbar in turn.

[0024] The first rod portion is connected to the bushing through the rod portion connecting portion, thereby realizing the positioning between the first rod portion and the bushing, thereby ensuring the relative position between the bushing and the first copper busbar wire, improving the abutment connection reliability, and making the bushing and the first copper busbar wire tightly connected without the entry of insulating material, thereby improving the current conduction between the bushing and the first copper busbar wire; the end connecting portion is connected to the first end face, thereby realizing the positioning between the first connecting portion and the first head, preventing the first connecting portion from falling off, improving the connection reliability, and thereby improving the reliability of current conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 1 is a schematic structural diagram of a power terminal before injection molding provided by a specific embodiment of the present invention;

[0026] Figure 2 1 is a schematic diagram of the structure of the power terminal after injection molding provided by a specific embodiment of the present invention;

[0027] Figure 3 is a structural schematic diagram of a first mounting rod provided in a specific embodiment of the present invention;

[0028] Figure 4 yes Figure 3 A magnified view of point A;

[0029] Figure 5 is a cross-sectional view of a first terminal assembly provided in a specific embodiment of the present invention;

[0030] Figure 6 yes Figure 5 Enlarged view of point B.

[0031] In the picture:

[0032] 1-Insulating substrate;

[0033] 2-first terminal assembly; 21-first mounting rod; 211-first rod portion; 212-first reinforcing rib; 213-first head portion; 214-groove; 215-boss; 22-first copper busbar; 221-first connecting portion; 2211-extrusion portion; 222-second connecting portion; 23-bushing; 24-welding portion;

[0034] 3-second terminal assembly; 31-second mounting rod; 32-second copper busbar cable; 321-third connecting portion; 322-fourth connecting portion;

[0035] 4-Insert; 41-Connection hole. DETAILED DESCRIPTION

[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] This embodiment provides a power terminal, which includes an insulating base 1 and a first terminal assembly 2 embedded in the insulating base 1. The first terminal assembly 2 includes a first mounting rod 21, a first copper busbar 22 and a bushing 23. Figures 1-6As shown, the first mounting rod 21 includes a first rod portion 211 and a first head portion 213 connected to the first rod portion 211, and the first head portion 213 is provided with an end connection portion on the end face close to the first rod portion 211, and the first rod portion 211 is provided with a rod connection portion along the circumferential direction, and the rod connection portion is arranged close to the first head portion 213; the first copper busbar 22 includes a first connection portion 221 and a second connection portion 222, and the first connection portion 221 includes a first end face and a second end face arranged opposite to each other, the first end face of the first connection portion 221 is connected to the end connection portion, and the second connection portion 222 is used for electrical connection with the outside; the bushing 23 is sleeved on the first rod portion 211 and connected to the rod connection portion, and the bushing 23 abuts against the second end face of the first connection portion 221.

[0040] like Figure 1 and Figure 2 As shown, the insulating base 1 is used to embed the first terminal assembly 2, so that the first mounting rod 21, the first copper busbar 22 and the bushing 23 are fixedly connected, which not only plays a positioning role, but also prevents the first terminal assembly 2 from being damaged by external forces and plays an insulating protection role; Figure 5 and Figure 6 As shown, during use, the first rod portion 211 is connected to the first external connector, which abuts the end of the bushing 23 away from the first head 213. The second connecting portion 222 is connected to the second external connector, thereby electrically connecting the first external connector to the second external connector through the bushing 23 and the first copper busbar 22. Generally, the first external connector is the positive terminal of the power supply, and the second external connector is the positive terminal of the IBSG system.

[0041] The bushing 23 is disposed on the first rod portion 211 and forms a sealed space with the outer insulating base 1 retaining wall, preventing the first copper busbar cable 22 from contacting the outside and providing a waterproof and dustproof function. The first rod portion 211 is connected to the bushing 23 via the rod connection portion, achieving positioning between the first rod portion 211 and the bushing 23, thereby ensuring the relative position between the bushing 23 and the first copper busbar cable 22, improving the reliability of the abutment connection, and ensuring a tight connection between the bushing 23 and the first copper busbar cable 22 without the intrusion of insulating material, thereby improving the current conduction between the bushing 23 and the first copper busbar cable 22. The end connection portion is connected to the first end face, achieving positioning between the first connection portion 221 and the first head portion 213, preventing the first connection portion 221 from falling off, improving the connection reliability, and thus improving the reliability of current conduction. Specifically, the bushing is made of a conductive material such as metal, thereby improving conductivity.

[0042] like Figure 3As shown, the first rod portion 211 is locked and connected to the first external connecting member, which improves the connection strength and reliability; optionally, the first external connecting member is provided with a through hole, and the first external connecting member is sleeved on the first rod portion 211 through the through hole, one end of the first external connecting member abuts against the bushing 23, and the other end can be locked by a locking member; optionally, the first external connecting member can also be provided with a plug-in hole, and the first external connecting member is plug-connected to the first rod portion 211 through the plug-in hole; optionally, the first mounting rod 21 is a bolt, and the first external connecting member is provided with a threaded hole, and the first external connecting member is threadedly connected to the first mounting rod 21, and the specific connection method is not limited.

[0043] Optionally, the first connecting portion 221 is sleeved on the first rod portion 211, which increases the connection reliability between the first connecting portion 221 and the first rod portion 211. The longitudinal section of the first mounting rod 21 is T-shaped, which increases the contact area between the first connecting portion 221 and the first head 213, thereby improving the connection reliability.

[0044] When the first and second external connectors are positioned opposite each other on either side of the power terminal, to facilitate connection between the power terminal and the external structure, the first copper busbar cable 22 may optionally have an L-shaped longitudinal cross-section, i.e., the first connecting portion 221 and the second connecting portion 222 are positioned perpendicularly, and the second connecting portion 222 is parallel to the first rod portion 211. This facilitates connection of the first and second external connectors to the power terminal, resulting in a simple structure and easy installation. When the first and second external connectors are positioned on adjacent sides of the power terminal, the first copper busbar cable 22 may also be positioned in a planar configuration, depending on actual needs and not limited thereto.

[0045] Optionally, the first end face and the end connection portion may be connected by riveting or welding, so as to fix the relative positions of the first end face and the end connection portion.

[0046] like Figure 3 and Figure 4 As shown, optionally, the radial dimension of the rod connecting portion is larger than the radial dimension of the first rod portion 211. During installation, the bushing 23 is sleeved on the first rod portion 211, and the rod connecting portion can be riveted or interference fit with the bushing 23; optionally, the rod connecting portion includes a protrusion protruding along the radial direction of the first rod portion 211, and the bushing 23 is riveted to the protrusion, or the outer diameter of the rod connecting portion is increased due to the provision of the protrusion, so that the bushing 23 and the rod connecting portion are interference fit, and the bushing 23 abuts against the circumferential surface and the protrusion of the first rod portion 211 to avoid relative movement between the bushing 23 and the first rod portion 211, thereby improving the connection reliability between the bushing 23 and the first rod portion 211.

[0047] In this embodiment, the protrusion is a first reinforcing rib 212 provided along the length of the first rod portion 211. The first reinforcing rib 212 is easy to process and can increase the structural strength of the first rod portion 211, thereby improving the structural reliability. Optionally, multiple first reinforcing ribs 212 are spaced apart along the circumference of the first rod portion 211, forming a spacing groove between two adjacent first reinforcing ribs 212. When the bushing 23 is connected to the first reinforcing rib 212, the bushing 23 is squeezed within the spacing groove, further improving the connection reliability between the bushing 23 and the first rod portion 211. Preferably, the multiple first reinforcing ribs 212 are evenly spaced, so that the force between the bushing 23 and the first rod portion 211 is evenly distributed.

[0048] In other embodiments, the protrusion is a second reinforcing rib arranged along the circumference of the first rod portion 211. The second reinforcing rib is easy to process and can improve the structural strength of the first rod portion 211, thereby improving the reliability of the structure. Optionally, multiple second reinforcing ribs are arranged at intervals along the axial direction of the first rod portion 211, and a spacing groove is formed between two adjacent second reinforcing ribs. When connected, the bushing 23 is squeezed into the spacing groove, further improving the connection reliability between the bushing 23 and the first rod portion 211. Preferably, the multiple second reinforcing ribs are evenly spaced to ensure uniform force between the bushing 23 and the first rod portion 211. Optionally, the rod connecting portion and the bushing 23 can be connected by an interference fit or riveted connection, thereby achieving a fixed relative position between the rod connecting portion and the bushing 23.

[0049] like Figure 3 and Figure 4 As shown, the end connection portion optionally includes a boss 215 provided on the first head portion 213. The boss 215 is connected to the first connection portion 221. The first connection portion 221 abuts against the end face of the first head portion 213 near the first rod portion 211, thereby improving the structural connection strength between the first head portion 213 and the first connection portion 221. The boss 215 has a simple structure and is easy to connect. Optionally, the end connection portion includes multiple bosses 215, which are arranged at intervals, and a spacing groove is formed between adjacent bosses 215. When connected, the first connection portion 221 is squeezed into the spacing groove, further improving the connection reliability between the first connection portion 221 and the first head portion 213. Preferably, the multiple bosses 215 are evenly spaced.

[0050] like Figure 4 、 Figure 5 and Figure 6As shown, optionally, a mounting hole is opened on the first connecting portion 221, and the first connecting portion 221 is mounted on the first rod portion 211 through the mounting hole, and a groove 214 is provided between the rod connecting portion and the first head portion 213. When the first connecting portion 221 is connected to the end connecting portion, an extrusion portion 2211 is formed on the mounting hole, and the extrusion portion 2211 is squeezed into the groove 214; the extrusion portion 2211 cooperates with the groove 214 to further improve the connection strength between the first connecting portion 221 and the first head portion 213, and prevent the first connecting portion 221 from falling off after connection; preferably, the groove 214 is provided along the circumference of the first rod portion 211.

[0051] Optionally, the bushing 23 is welded to the second end face of the first connecting portion 221. Specifically, the bushing 23 is sleeved onto the first rod portion 211 and welded to the second end face of the first connecting portion 221 to form a welded portion 24. Preferably, the welded portion 24 is provided along the circumference of the bushing 23 to increase the connection strength between the bushing 23 and the first copper busbar cable 22. Optionally, the bushing 23 and the first copper busbar cable 22 can be welded together by laser welding, resistance welding, brazing, or conventional soldering, the selection of which is not limited herein and can be made based on actual circumstances.

[0052] Optionally, the insulating base 1 is an injection-molded plastic part, and the fixed connection of the first terminal assembly 2 is achieved by injection-molding the plastic into a mold.

[0053] like Figure 1 and Figure 2 As shown, optionally, the power terminal also includes a second terminal assembly 3, the second terminal assembly 3 is embedded in the insulating base 1, and the second terminal assembly 3 and the first terminal assembly 2 are connected through the insulating base 1, and are respectively connected to the two ends of the power supply through the first terminal assembly 2 and the second terminal assembly 3, as well as to the two ends of the power system, thereby realizing that the power supply supplies power to the power system through the power terminal.

[0054] Specifically, the second terminal assembly 3 includes a second mounting rod 31 and a second copper busbar cable 32. The second mounting rod 31 has a T-shaped longitudinal section, including a second rod portion and a second head portion connected to the second rod portion. The second copper busbar cable 32 has an L-shaped longitudinal section, including a third connecting portion 321 and a fourth connecting portion 322. The third connecting portion 321 is sleeved on the second rod portion and connected to the second head portion. The third connecting portion 321 is connected to the third external connector, and the fourth connecting portion 322 is connected to the fourth external connector. The third and fourth external connectors conduct current through the second copper busbar cable 32. The second terminal assembly 3 has a significant structural difference from the bushing 23 provided on the first terminal assembly 2, which facilitates subsequent connection with the external wiring harness to prevent misconnection. Generally, the third external connector is the negative terminal of the power supply, and the fourth external connector is the negative terminal of the IBSG system.

[0055] Optionally, an insert 4 is provided on the insulating base 1, and a connection hole 41 for connecting to an external mechanism is provided on the insert 4, so that the power terminal can be detachably connected to the external mechanism through a fastener, thereby improving the reliability of the connection between the power terminal and the external mechanism.

[0056] In this embodiment, the power terminal includes a first mounting rod 21, a bushing 23 connected to the first mounting rod 21, a first copper busbar cable 22 connected to the first mounting rod 21 and the bushing 23, a second mounting rod 31, and a second copper busbar cable 32 connected to the second mounting rod 31. When the power supply supplies power to the IBSG system through the power terminal, the power terminal is installed on the IBSG system through fasteners, the first rod portion 211 of the first mounting rod 21 is fixed to the power terminal 48V+ connection structure, the power terminal 48V+ abuts against the bushing 23 to achieve electrical connection, and the second connection portion is electrically connected to the IBSG system. The mechanical connection between the power terminal 48V+ and the IBSG system is achieved through the first rod portion 211 and the second connection portion, making the structural connection stable and reliable; the second rod portion of the second mounting rod 31 is connected to the power terminal 48V-, the power terminal 48V- abuts against the third connection portion 321 to achieve electrical connection, and the fourth connection portion 322 is electrically connected to the IBSG system. The mechanical connection between the power terminal 48V- and the IBSG system is achieved through the second rod portion and the fourth connection portion 322, making the structural connection stable and reliable; the power supply to the IBSG system is achieved through the bushing 23, the first copper busbar cable 22 and the second copper busbar cable 32. The structure is simple, the installation is convenient, and the use is reliable.

[0057] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A power terminal, characterized in that: It comprises an insulating base (1) and a first terminal assembly (2) embedded in the insulating base (1), wherein the first terminal assembly (2) comprises: A first mounting rod (21), wherein the first mounting rod (21) is a bolt, and the first mounting rod (21) comprises a first rod portion (211) and a first head portion (213) connected to the first rod portion (211), an end connecting portion is provided on an end surface of the first head portion (213) close to the first rod portion (211), and a rod connecting portion is provided along the circumference of the first rod portion (211), and the rod connecting portion is provided close to the first head portion (213); A first copper busbar cable (22), the first copper busbar cable (22) comprising a first connecting portion (221) and a second connecting portion (222), a first end surface of the first connecting portion (221) being connected to the end connecting portion, and the second connecting portion (222) being used for electrical connection to the outside; a bushing (23) sleeved on the first rod portion (211) and connected to the rod portion connecting portion, wherein the bushing (23) abuts against a second end surface of the first connecting portion (221), and the second end surface is arranged opposite to the first end surface; The first rod portion (211) is connected to the bushing (23) via the rod portion connecting portion, so that the bushing (23) is tightly connected to the first copper busbar (22); The end connection portion includes a boss (215) provided on the first head portion (213), the boss (215) is connected to the first connection portion (221), and the first connection portion (221) abuts against an end surface of the first head portion (213) close to the first rod portion (211); The end connection portion includes a plurality of bosses (215), the plurality of bosses (215) are arranged at intervals, and a spacing groove is formed between two adjacent bosses (215). When connected, the first connection portion (221) is squeezed into the spacing groove; A mounting hole is provided on the first connecting portion (221), and the first connecting portion (221) is sleeved on the first rod portion (211) through the mounting hole. A groove (214) is provided between the rod connecting portion and the first head portion (213). When the first connecting portion (221) is connected to the end connecting portion, an extrusion portion (2211) is formed on the mounting hole, and the extrusion portion (2211) is provided in the groove (214).

2. The power terminal according to claim 1, wherein: The radial dimension of the rod connecting portion is greater than the radial dimension of the first rod portion (211), and the bushing (23) is interference-fitted or riveted with the rod connecting portion.

3. The power terminal according to claim 2, wherein: The rod connecting portion comprises a protruding bushing protruding along the radial direction of the first rod (211), and the bushing (23) abuts against the circumferential surface of the first rod (211) and the protrusion.

4. The power terminal according to claim 3, wherein: The protrusion is a first reinforcing rib (212) provided along the length direction of the first rod portion (211).

5. The power terminal according to claim 4, characterized in that A plurality of the first reinforcing ribs (212) are arranged at intervals along the circumference of the first rod portion (211), and a spacing groove is formed between two adjacent first reinforcing ribs (212). When connected, the bushing (23) is squeezed into the spacing groove.

6. The power terminal according to claim 3, wherein: The protrusion is a second reinforcing rib arranged along the circumference of the first rod portion (211).

7. The power terminal according to claim 6, wherein: A plurality of second reinforcing ribs are arranged at intervals along the axial direction of the first rod portion (211), and a spacing groove is formed between two adjacent second reinforcing ribs. When connected, the bushing (23) is squeezed into the spacing groove.

8. The power terminal according to any one of claims 1 to 7, characterized in that: The longitudinal section of the first mounting rod (21) is T-shaped, the longitudinal section of the first copper busbar (22) is L-shaped, and the first connecting portion (221) is sleeved on the first rod portion (211).

9. The power terminal according to any one of claims 1 to 7, characterized in that: The bushing (23) is connected to the second end surface of the first connecting portion (221) by welding.

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