Electric connector and electric connecting device

Abstract

The invention relates to the technical field of electric connectors, in particular to an electric connector and an electric connecting device. The electric connector comprises a power transmission terminal and a metal bar, the metal bar comprises a transition bar and a straight-bar-shaped metal bar body, the power transmission terminal is provided with an input end and an output end which are opposite in the first direction, the metal bar body is arranged on the side, away from the input end, of the output end, and the metal bar body is located below the output end; the metal bar main body is made of hard metal, the transition bar comprises a first transition part, a bending part and a second transition part which are electrically connected in sequence, and the bending part is made of soft metal; one end of the first transition portion away from the second transition portion is electrically connected with the output end, and one end of the second transition portion away from the first transition portion is electrically connected with the metal bar. According to the invention, the bending tolerance of the metal bar can be greatly reduced, and the accuracy of the metal bar in the assembling process is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical connectors, and in particular relates to an electrical connector and an electrical connecting device. Background Art

[0002] Currently, in the manufacturing process of electrical connectors, metal bars are an important component thereof, and the metal bars often need to be bent to meet the specific structural design and functional requirements of the electrical connectors.

[0003] In the prior art, metal bars are usually made of hard metal materials to ensure their good electrical conductivity and mechanical strength. In order to make the metal bars meet the complex spatial layout requirements inside the electrical connector, the metal bars often need to be bent. However, due to the physical properties of the hard metal bars themselves and the limitations of the bending process, bending tolerances are prone to occur when bending them. This bending tolerance makes it difficult for the metal bars to be accurately embedded in the corresponding positions when assembling them with other components of the electrical connector. This not only reduces the assembly efficiency, but may also cause damage to the metal bars or other components due to multiple adjustments, affecting the overall quality and performance of the electrical connector. Summary of the invention The technical problem to be solved by the present invention is: in view of the problem in the prior art that hard metal bars are prone to bending tolerance when being bent, an electrical connector and an electrical connecting device are provided.

[0004] In order to solve the above technical problems, on the one hand, an embodiment of the present invention provides an electrical connector, including a shell, an insulating sleeve, a power transmission terminal and a metal bar, wherein two power transmission terminals are provided, namely a positive power transmission terminal and a negative power transmission terminal, and two metal bars are provided, namely a positive metal bar and a negative metal bar, and an accommodating space is provided inside the shell, and the insulating sleeve is connected to the shell and the inner hole of the insulating sleeve is connected to the accommodating space; The metal bar includes a transition bar and a straight metal bar body, the power transmission terminal has an input end and an output end opposite to each other along a first direction, the metal bar body is arranged on a side of the output end away from the input end, and the metal bar body is located below the output end; The metal bar body is made of hard metal, the transition bar includes a first transition portion, a bending portion and a second transition portion which are electrically connected in sequence, and the bending portion is made of soft metal; the output terminal and the first transition portion are installed in the accommodating space, the insulating sleeve is sleeved on the metal bar body, the second transition portion and a part of the metal bar body are located in the inner hole of the insulating sleeve, and another part of the metal bar body extends out of the insulating sleeve; One end of the first transition portion of the positive metal bar away from the second transition portion is electrically connected to the output end of the positive power transmission terminal, and one end of the second transition portion of the positive metal bar away from the first transition portion is electrically connected to the metal bar body of the positive metal bar; one end of the first transition portion of the negative metal bar away from the second transition portion is electrically connected to the output end of the negative power transmission terminal, and one end of the second transition portion of the negative metal bar away from the first transition portion is electrically connected to the metal bar body of the negative metal bar.

[0005] Optionally, the insulating sleeve is a soft insulating sleeve; The metal bar body and the insulating sleeve are interference-fitted so that the insulating sleeve can absorb the bending tolerance of the bent portion.

[0006] Optionally, the first transition portion of the positive metal bar is detachably connected to the output end of the positive power transmission terminal; the first transition portion of the negative metal bar is detachably connected to the output end of the negative power transmission terminal.

[0007] Optionally, the first transition portion, the bending portion and the second transition portion are integrally formed; The second transition portion is fixedly mounted on or integrally formed with the metal bar body.

[0008] Optionally, the metal bar body and the second transition portion are arranged in sequence along a second direction; wherein the first direction intersects with the second direction; A side surface of the metal bar body facing the second transition portion is attached to a side surface of the second transition portion facing the metal bar body.

[0009] Optionally, at least one of the first transition portion and the second transition portion is made of soft metal.

[0010] Optionally, the electrical connector further includes a fastener, a first mounting hole is provided on the first transition portion, a second mounting hole is provided on the output end, and the fastener is installed in the first mounting hole and the second mounting hole to fasten the first transition portion to the output end.

[0011] Optionally, the electrical connector further comprises a shielding layer, the shielding layer being covered on the outer peripheral surface of the portion of the metal bar body extending out of the insulating sleeve; the shielding layer is used to enhance the anti-electromagnetic interference capability of the electrical connector; The shielding layer is one of copper foil, aluminum foil, copper braided mesh, aluminum braided mesh and conductive plastic.

[0012] Optionally, the electrical connector further comprises a snap ring, the insulating sleeve comprises a connected insulating sleeve body and a contraction portion, the inner hole of the insulating sleeve comprises a first through hole provided inside the insulating sleeve body and a second through hole provided inside the contraction portion, the first through hole and the second through hole are interconnected and extend in the same direction, the second transition portion and a portion of the metal bar body are located in the first through hole, another portion of the metal bar body extends out of the first through hole and the second through hole, and the metal bar body is interference fit with the contraction portion; The shielding layer includes a connected shielding layer body and a connecting portion, wherein the shielding layer body is covered on the outer circumference of the portion of the metal bar body extending out of the insulating sleeve, the connecting portion is covered on the outer circumference of the contraction portion, and the clamping ring is sleeved on the outer circumference of the connecting portion and locks the connecting portion on the contraction portion.

[0013] According to the electrical connector provided by the embodiment of the present invention, the bending portion is made of soft metal material. Compared with hard metal materials, soft metal has better plasticity and flexibility. This makes it easier for the bending portion to adapt to the adjustment of the bending angle during the bending process, thereby greatly reducing the bending tolerance, ensuring the accuracy of the metal row during the assembly process, and avoiding the poor matching problems that may be caused by hard metal materials and stress concentration during assembly. This improves the assembly accuracy and stability of the entire electrical connector. At the same time, the present invention combines hard metal with soft metal so that the metal row not only meets the mechanical strength and conductivity provided by hard metal, but also has the flexibility provided by soft metal. This combination optimizes the overall performance of the metal row, so that it can not only ensure the long-term stability of the electrical connector, but also adapt to the precision requirements in production and assembly.

[0014] On the other hand, an embodiment of the present invention provides an electrical connection device, including the above-mentioned electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an electrical connector provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of the internal structure of an electrical connector provided by an embodiment of the present invention.

[0016] The reference numerals in the specification are as follows: 1. Power transmission terminal; 2. Metal bar; 3. Fastener; 4. First mounting hole; 5. Second mounting hole; 6. Shell; 7. Insulating sleeve; 8. Shielding layer; 9. Clamp; 21. Transition bar; 22. Metal bar body; 211. First transition part; 212. Bending part; 213. Second transition part; 61. Accommodating space; 71. Inner hole of insulating sleeve; 72. Insulating sleeve body; 73. Contraction part; 81. Shielding layer body; 82. Connecting part; 711. First through hole; 712. Second through hole. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an electrical connector, including a housing 6, an insulating sleeve 7, a power transmission terminal 1 and a metal bar 2, wherein two power transmission terminals 1 are provided, namely a positive power transmission terminal and a negative power transmission terminal, and two metal bars 2 are provided, namely a positive metal bar and a negative metal bar, and an accommodating space 61 is provided inside the housing 6, and the insulating sleeve 7 is connected to the housing 6 and an inner hole 71 of the insulating sleeve is connected to the accommodating space 61; The metal bar 2 includes a transition bar 21 and a straight metal bar body 22. The power transmission terminal 1 has an input end and an output end opposite to each other along a first direction. The metal bar body 22 is disposed on a side of the output end away from the input end, and the metal bar body 22 is located below the output end. The metal bar body 22 is made of hard metal, and the transition bar 21 includes a first transition portion 211, a bending portion 212, and a second transition portion 213 which are electrically connected in sequence, and the bending portion 212 is made of soft metal; the output terminal 1 and the first transition portion 211 are installed in the accommodating space 61, the insulating sleeve 7 is sleeved on the metal bar body 22, and the second transition portion 213 and a part of the metal bar body 22 are located in the inner hole 71 of the insulating sleeve, and another part of the metal bar body 22 extends out of the insulating sleeve 7; One end of the first transition part 211 of the positive metal bar away from the second transition part 213 is electrically connected to the output end of the positive power transmission terminal, and one end of the second transition part 213 of the positive metal bar away from the first transition part 211 is electrically connected to the metal bar body 21 of the positive metal bar; one end of the first transition part 211 of the negative metal bar away from the second transition part 213 is electrically connected to the output end of the negative power transmission terminal 1, and one end of the second transition part 213 of the negative metal bar away from the first transition part 211 is electrically connected to the metal bar body 22 of the negative metal bar. It can be understood that the positive metal bar is the positive metal bar 2, and the negative metal bar is the negative metal bar 2. Figure 1 There are two metal bars 2, one is a positive metal bar and the other is a negative metal bar. Figure 2 The internal structure shown in the figure can be a cross-sectional schematic diagram of a positive metal bar or a cross-sectional schematic diagram of a negative metal bar. The structures and connection relationships of the two metal bars 2 are the same, so some of the following content only describes the connection relationship of one metal bar 2. In this embodiment, the input end of the transmission terminal 1 can be connected to an external charging pile, and the end of the metal bar body 22 away from the transmission terminal 1 can be connected to a copper bar of a corresponding structure on the vehicle to achieve current transmission. The transmission terminal 1 is a DC terminal, which can be a copper alloy terminal or an aluminum alloy terminal, etc. The metal bar body 22 can be a copper bar or an aluminum bar, etc. The transition bar 21 can be a soft copper bar, a soft aluminum bar, a copper cable, an aluminum cable, a copper braided wire or an aluminum braided wire, wherein the bending portion 212 is made of a corresponding soft metal, and the first transition portion 211 and the second transition portion 213 can be made of a soft metal or a hard metal. By providing a bending portion 212 made of soft metal (such as soft copper or soft aluminum) in the metal bar 2, the bending portion 212 can effectively absorb the deformation and tolerance of the hard metal bar 2 during the bending process. The hard metal bar 2 (such as a copper bar or an aluminum bar) is prone to inevitable deformation and tolerance when bending. The soft bending portion 212 has better flexibility and can adapt to these deformations, avoid excessive tolerances, and ensure the accuracy of the overall connector. Due to the flexibility of the bending portion 212, the irregular deformation during the bending process will not be transmitted to the entire metal bar body 22, thereby avoiding problems such as poor contact and decreased conductivity caused by uneven or incorrect force on the electrical connection port (such as the charging port), ensuring stable and reliable electrical connection. The hard metal bar body 22 provides sufficient mechanical strength and conductivity, while the soft bending portion 212 provides flexibility. This combined structure can effectively balance the strength and flexibility requirements, meet the long-term stability requirements of the electrical connector, and adapt to the high precision requirements during production and assembly. At the same time, the insulating sleeve 7 provides water vapor protection for the flexible connection and ensures the insulation performance of the electrical connection.

[0019] In one embodiment, the insulating sleeve 7 is a soft insulating sleeve 7; The metal bar body 22 and the insulating sleeve 7 have an interference fit, so that the insulating sleeve 7 can absorb the bending tolerance of the bent portion 212. The interference fit between the metal bar body 22 and the insulating sleeve 7 ensures the stable installation of the metal bar 2 in the connector, avoids loosening or falling off due to vibration or external force, and thus improves the stability and reliability of the electrical connection. The soft insulating sleeve 7 can be a soft rubber sleeve, and the soft rubber sleeve includes silicone rubber, EPDM, fluororubber, etc. At the same time, the soft insulating sleeve 7 can absorb the bending tolerance of the bent portion 212 of the metal bar 2 during processing or installation, ensuring that the metal bar body 22 will not be difficult to assemble or performance will be reduced due to tolerance problems during installation. That is, the soft insulating sleeve 7 has a certain degree of activity and deformation ability. Compared with the hard insulating sleeve 7 on the conventional electrical connector, the present invention reduces the bending tolerance generated during processing or installation by providing the soft insulating sleeve 7 together with the soft bending portion 212, thereby avoiding stress concentration. The requirements for the shape and position of the metal busbar body 22 during the production process can also be appropriately relaxed, which simplifies the manufacturing process and improves production efficiency to a certain extent.

[0020] In one embodiment, the positive electrode metal bar is an aluminum bar or a copper bar, and the negative electrode metal bar is an aluminum bar or a copper bar; The positive transmission terminal 1 is an aluminum alloy terminal or a copper alloy terminal, and the negative transmission terminal 1 is an aluminum alloy terminal or a copper alloy terminal. In other embodiments, the positive metal bar, the negative metal bar, the positive transmission terminal and the negative transmission terminal can be formed of other metal materials.

[0021] In one embodiment, the first transition portion 211, the bending portion 212 and the second transition portion 213 are integrally formed; The second transition part 213 is fixed or integrally formed on the metal bar body 22. In this embodiment, the first transition part 211, the bending part 212 and the second transition part 213 are integrally formed, and the second transition part 213 and the metal bar body 22 are designed separately. The metal bar body 22 can be connected to the second transition part 213 by ultrasonic welding, resistance welding, electromagnetic pulse welding, etc. With the split design, the second transition part 213 and the metal bar body 22 can be produced, tested, adjusted and optimized separately, making the entire production process more flexible. For different application requirements, different specifications of transition parts and metal bar body 22 can be customized as needed to improve the adaptability of the product. Among them, the first transition part 211, the bending part 212 and the second transition part 213 can all be made of soft metal. Through the split design, the manufacturer can use different materials or processes for the metal bar body 22 and the second transition part 213 as needed, so as to select lower-cost materials and optimize production costs while ensuring performance.

[0022] In one embodiment, the metal bar body 22 and the second transition portion 213 are arranged in sequence along the second direction; wherein the first direction intersects the second direction; The side surface of the metal bar body 22 facing the second transition part 213 is attached to the side surface of the second transition part 213 facing the metal bar body 22. It can be understood that the metal bar body 22 includes a conductor and an insulating layer wrapped around the outer peripheral surface of the conductor, and the second transition part 213 is connected to the conductor. When the metal bar body 22 is connected to the second transition part 213, the insulating layer of the metal bar body 22 near the second transition part 213 will be stripped off, and when the second transition part 213 is fixedly connected to the conductor, a protective sleeve will be thermoformed between the second transition part 213 and the end of the metal bar body 22 near the second transition part 213. In this embodiment, the first direction is the extension direction of the transmission terminal 1 (the length direction of the transmission terminal 1), and the second direction is the thickness direction of the metal bar body 22. The fitted side surface design increases the contact area between the metal busbar body 22 and the second transition portion 213, effectively reducing the contact resistance, thereby ensuring the high efficiency and stability of current transmission, reducing heat accumulation and energy loss caused by poor contact, and improving the electrical performance of the electrical connector. This tightly fitting structure enhances the mechanical strength of the entire electrical connector to a certain extent, enabling it to better withstand external mechanical stress, vibration and other interference, thereby improving the reliability and durability of the product.

[0023] In one embodiment, at least one of the first transition portion 211 and the second transition portion 213 is made of soft metal. In this embodiment, the first transition portion 211, the bending portion 212 and the second transition portion 213 are all made of soft metal, and the first transition portion 211, the bending portion 212 and the second transition portion 213 are integrally formed, by replacing the traditional hard metal bar 2 with a bending structure with two separate parts, one part is a hard straight bar metal bar main body 22, and the other part is a soft transition bar 21 with a bending portion 212. The soft transition bar 21 (including the first transition portion 211, the bending portion 212 and the second transition portion 213) can more easily adapt to the bending requirements, thereby significantly reducing the tolerance caused by the bending of the hard metal bar 2. This design ensures the precise alignment and stable connection between the metal bar main body 22 and the power transmission terminal 1, and improves the overall performance and reliability of the electrical connector. The split design allows the metal bar body 22 and the transition bar 21 to be manufactured and processed separately, and then assembled together through a simple connection method (such as crimping, welding or mechanical connection). This design not only simplifies the manufacturing process, but also improves assembly efficiency and accuracy, and reduces manufacturing costs. In other embodiments, the first transition portion 211 is made of hard metal, and the second transition portion 213 is made of soft metal.

[0024] In one embodiment, the first transition portion 211 of the positive metal bar is detachably connected to the output end of the positive power transmission terminal; the first transition portion 211 of the negative metal bar is detachably connected to the output end of the negative power transmission terminal. In this embodiment, the first transition portion 211 is detachably connected to the output end of the corresponding power transmission terminal 1 by snap-fitting or threaded connection, which facilitates the connection between the first transition portion 211 and the output end. In other embodiments, the connection between the two is achieved by welding.

[0025] In one embodiment, the electrical connector further comprises a fastener 3, a first mounting hole 4 is provided on the first transition portion 211, a second mounting hole 5 is provided on the output end, and the fastener 3 is installed in the first mounting hole 4 and the second mounting hole 5 so that the first transition portion 211 is fastened to the output end. In this embodiment, the first transition portion 211 and the output end are arranged in sequence in the up-down direction, and the top surface of the output end fits the bottom surface of the first transition portion 211. The use of the fastener 3 ensures a stable connection between the first transition portion 211 and the output end, avoiding the problem of loosening or falling off caused by vibration, impact or long-term use. The fitting arrangement in the up-down direction makes the connection tighter and further enhances the stability of the connection. The fastener 3 is used for connection, so that it can be easily disassembled and repaired when necessary. During maintenance, the components can be easily removed, replaced or repaired by simply loosening the fastener 3, providing convenient later support. Among them, the first mounting hole 4 and the second mounting hole 5 can be threadedly connected to the fastener 3.

[0026] In one embodiment, the electrical connector further comprises a shielding layer 8, which is covered on the outer circumference of the portion of the metal bar body 22 extending out of the insulating sleeve 7; the shielding layer 8 is used to enhance the anti-electromagnetic interference capability of the electrical connector; The shielding layer 8 is one of copper foil, aluminum foil, copper braided mesh, aluminum braided mesh and conductive plastic. In this embodiment, the shielding layer 8 can be copper foil, aluminum foil, copper braided mesh, aluminum braided mesh, conductive plastic. The application of the shielding layer 8 realizes efficient electromagnetic shielding. The application of the shielding layer 8 can form an effective electromagnetic barrier to block or weaken the interference of the external electromagnetic field on the metal busbar body 22 and its internal signals, so that it can maintain stable performance in various complex electromagnetic environments. This helps to improve the reliability and stability of the connector and extend its service life.

[0027] In one embodiment, the electrical connector further includes a clamping ring 9, the insulating sleeve 7 includes a connected insulating sleeve body 72 and a contraction portion 73, the inner hole 71 of the insulating sleeve includes a first through hole 711 provided inside the insulating sleeve body 72 and a second through hole 712 provided inside the contraction portion 73, the first through hole 711 and the second through hole 712 are interconnected and extend in the same direction, the second transition portion 213 and a portion of the metal bar body 22 are located in the first through hole 711, another portion of the metal bar body 22 extends out of the first through hole 711 and the second through hole 712, and the metal bar body 22 is interference fit with the contraction portion 73; The shielding layer 8 includes a connected shielding layer body 81 and a connecting portion 82. The shielding layer body 81 is covered on the outer peripheral surface of the portion of the metal bar body 22 extending out of the insulating sleeve 7. The connecting portion 82 is covered on the outer peripheral surface of the contraction portion 73. The clamping ring 9 is sleeved on the outer peripheral surface of the connecting portion 82 and locks the connecting portion 82 on the contraction portion 73. In this embodiment, the second transition portion 213 abuts against the inner wall of the first through hole 711, so that the soft insulating sleeve 7 can better absorb the bending tolerance of the metal bar 2. The clamping ring 9 can be made of stainless steel, aluminum alloy, engineering plastics, etc. In the direction perpendicular to the extension direction of the first through hole 711, the cross-sectional area of ​​the first through hole 711 is greater than the cross-sectional area of ​​the second through hole 712. The contraction portion 73 is provided with a groove, and the clamping ring 9 is installed in the groove. The clamping ring 9 locks the connecting part 82 on the contraction part 73, ensuring the stability of the connection between the shielding layer 8 and the insulating sleeve 7, effectively preventing the shielding layer 8 from being displaced or loosened during use, thereby continuously and stably exerting its anti-electromagnetic interference function and ensuring the reliable operation of the electrical connector in a complex electromagnetic environment. At the same time, the interference fit between the metal bar body 22 and the contraction part 73 can not only absorb the bending tolerance by using the insulating sleeve 7, but also further enhance the positioning accuracy and stability of the metal bar body 22 in the insulating sleeve 7, avoiding the electrical connection performance affected by the shaking of the metal bar 2. The connection relationship between the soft insulating sleeve 7, the clamping ring 9, the shielding layer 8, that is, the metal bar body 22, makes the various components fit closely to form an organic whole, while ensuring the electrical performance and anti-electromagnetic interference ability of the electrical connector, optimizing the overall mechanical structure, improving the durability and impact resistance of the electrical connector, being able to adapt to various relatively harsh working conditions, reducing component damage or performance degradation caused by external mechanical forces, extending the service life of the electrical connector, and improving the comprehensive quality and market competitiveness of the product.

[0028] According to the electrical connector provided by the embodiment of the present invention, the bending portion 212 is made of soft metal material. Compared with hard metal materials, soft metal has better plasticity and flexibility. This makes it easier for the bending portion 212 to adapt to the adjustment of the bending angle during the bending process, thereby greatly reducing the bending tolerance, ensuring the accuracy of the metal row 2 during the assembly process, and avoiding the poor matching problems that may be caused by hard metal materials and stress concentration during assembly. This improves the assembly accuracy and stability of the entire electrical connector. At the same time, the present invention combines hard metal with soft metal so that the metal row 2 not only meets the mechanical strength and conductivity provided by the hard metal, but also has the flexibility provided by the soft metal. This combination optimizes the overall performance of the metal row 2, so that it can not only ensure the long-term stability of the electrical connector, but also adapt to the precision requirements in production and assembly.

[0029] In addition, an embodiment of the present invention provides an electrical connection device, including an electrical connector of the above embodiment. In this embodiment, the electrical connection device can be widely used in multiple key fields, such as new energy vehicles, new energy trucks, new energy ships, eVtol, etc. These fields have extremely high requirements for the cost, weight and electromagnetic compatibility of electrical connectors, especially aerospace is extremely sensitive to weight. The present invention realizes low-cost and high-current power transmission through the characteristics of the large area ratio of the metal bar 2, and realizes the IPX7 protection level through the soft connection. At the same time, the assembly tolerance is absorbed. In other embodiments, the input end of the transmission terminal 1 is electrically connected to the output interface of the charging pile, and the end of the metal bar body 22 away from the transmission terminal 1 is connected to the copper bar (charging port) of the corresponding structure on the vehicle to realize current transmission. With the help of structural designs such as the soft bending portion 212 absorbing the bending tolerance in the electrical connector, when the charging pile is connected to the vehicle charging port, the assembly difficulties and stress concentration caused by the bending tolerance of the metal bar 2 can be effectively overcome, ensuring that the transmission terminal 1 and the vehicle copper bar (charging port) are accurately and firmly connected. This stable connection greatly reduces the possibility of poor connection such as false connection, looseness or stress concentration during the charging process, ensures that the current can be transmitted continuously and smoothly, avoids frequent charging interruptions due to unstable connection, and improves the reliability of the entire charging process.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical connector, characterized in that: It comprises a shell, an insulating sleeve, a power transmission terminal and a metal bar, wherein the power transmission terminal is provided with two, namely a positive power transmission terminal and a negative power transmission terminal, and the metal bar is provided with two, namely a positive metal bar and a negative metal bar, and an accommodating space is provided inside the shell, the insulating sleeve is connected to the shell, and the inner hole of the insulating sleeve is connected to the accommodating space; The metal bar includes a transition bar and a straight metal bar body, the power transmission terminal has an input end and an output end opposite to each other along a first direction, the metal bar body is arranged on a side of the output end away from the input end, and the metal bar body is located below the output end; The metal bar body is made of hard metal, the transition bar includes a first transition portion, a bending portion and a second transition portion which are electrically connected in sequence, and the bending portion is made of soft metal; the output terminal and the first transition portion are installed in the accommodating space, the insulating sleeve is sleeved on the metal bar body, the second transition portion and a part of the metal bar body are located in the inner hole of the insulating sleeve, and another part of the metal bar body extends out of the insulating sleeve; One end of the first transition portion of the positive metal bar away from the second transition portion is electrically connected to the output end of the positive power transmission terminal, and one end of the second transition portion of the positive metal bar away from the first transition portion is electrically connected to the metal bar body of the positive metal bar; one end of the first transition portion of the negative metal bar away from the second transition portion is electrically connected to the output end of the negative power transmission terminal, and one end of the second transition portion of the negative metal bar away from the first transition portion is electrically connected to the metal bar body of the negative metal bar.

2. The electrical connector according to claim 1, characterized in that: The insulating sleeve is a soft insulating sleeve; The metal bar body and the insulating sleeve are interference-fitted so that the insulating sleeve can absorb the bending tolerance of the bent portion.

3. The electrical connector according to claim 1, characterized in that: The first transition portion of the positive metal bar is detachably connected to the output end of the positive power transmission terminal; the first transition portion of the negative metal bar is detachably connected to the output end of the negative power transmission terminal.

4. The electrical connector according to claim 1, characterized in that: The first transition portion, the bending portion and the second transition portion are integrally formed; The second transition portion is fixedly mounted on or integrally formed with the metal bar body.

5. The electrical connector according to claim 1, characterized in that: The metal bar body and the second transition portion are arranged in sequence along a second direction; wherein the first direction intersects with the second direction; A side surface of the metal bar body facing the second transition portion is attached to a side surface of the second transition portion facing the metal bar body.

6. The electrical connector according to claim 1, characterized in that: At least one of the first transition portion and the second transition portion is made of soft metal.

7. The electrical connector according to claim 1, characterized in that: The electrical connector also includes a fastener, a first mounting hole is provided on the first transition portion, a second mounting hole is provided on the output end, and the fastener is installed in the first mounting hole and the second mounting hole to fasten the first transition portion to the output end.

8. The electrical connector according to claim 1, characterized in that: The electrical connector further comprises a shielding layer, which is covered on the outer peripheral surface of the portion of the metal bar body extending out of the insulating sleeve; the shielding layer is used to enhance the anti-electromagnetic interference capability of the electrical connector; The shielding layer is one of copper foil, aluminum foil, copper braided mesh, aluminum braided mesh and conductive plastic.

9. The electrical connector according to claim 8, characterized in that: The electrical connector further includes a snap ring, the insulating sleeve includes an insulating sleeve body and a contraction portion connected to each other, the inner hole of the insulating sleeve includes a first through hole provided inside the insulating sleeve body and a second through hole provided inside the contraction portion, the first through hole and the second through hole are interconnected and extend in the same direction, the second transition portion and a portion of the metal bar body are located in the first through hole, another portion of the metal bar body extends out of the first through hole and the second through hole, and the metal bar body is interference-fitted with the contraction portion; The shielding layer includes a connected shielding layer body and a connecting portion, wherein the shielding layer body is covered on the outer circumference of the portion of the metal bar body extending out of the insulating sleeve, the connecting portion is covered on the outer circumference of the contraction portion, and the clamping ring is sleeved on the outer circumference of the connecting portion and locks the connecting portion on the contraction portion.

10. An electrical connection device, characterized in that: An electrical connector comprising any one of claims 1 to 9.

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