Connector and power connector

Abstract

The utility model discloses a connector and a power supply connector, and relates to the technical field of electronic devices, the connector comprises a connecting seat, a connecting part and a sealing member, the connecting seat is provided with a circuit board; the connecting part is connected with the circuit board and is used for being connected with an external connecting device; the sealing element comprises a first sealing part and a second sealing part which are integrally arranged, the first sealing part covers the circuit board, and the second sealing part is arranged around the peripheral wall of the connecting part. The connecting part and the circuit board are connected in a sealed mode through the sealing piece, the problems that when the connector is connected with an external connecting device, generated metal chips enter the external connecting device, short circuit occurs, and equipment faults and damage occur are solved, pollution is reduced, safety is improved, machining procedures are saved, and production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, in particular to a connector and a power connector. Background Art

[0002] The connecting part of the connector is crimped onto the circuit board. When the connector is used to connect to an external connection device such as an OBC (On-Board Charger) box, the connecting part of the connector is hard-crimped onto the circuit board. Due to the interference of the metal in the connecting part with the circuit board, metal chips are generated during crimping. The generated metal chips will cause poor cleaning problems. If the generated metal chips enter the OBC box, it will cause a short circuit, resulting in equipment failure or damage, and safety issues. Although existing connectors also have seals to prevent metal chips from entering the OBC box, the seals used are mostly combined structures composed of multiple sealing rings, which have the problem of high processing costs. Utility Model Content

[0003] The main purpose of the present invention is to provide a connector and a power connector, aiming to improve the poor cleaning and safety issues caused by metal chips generated by the connector, and to reduce production costs.

[0004] To achieve the above-mentioned purpose, the present invention provides a connector, comprising:

[0005] A connecting seat having a circuit board;

[0006] a connecting portion, one end of which is connected to the circuit board, and the other end of which is used to connect to an external connecting device;

[0007] The sealing member includes a first sealing portion and a second sealing portion which are integrally provided. The first sealing portion is covered on the circuit board, and the second sealing portion is provided around the peripheral wall of the connecting portion.

[0008] In one embodiment, a mounting groove is provided on one side of the connecting seat, and the first sealing portion fills the mounting groove and covers a side surface of the circuit board close to the connecting portion.

[0009] In one embodiment, bushings are provided on both sides of the installation groove, the seal further includes a third sealing portion, the circuit board is provided with a connection position adapted to be connected with the bushing, and the third sealing portion is arranged around the bushing.

[0010] In one embodiment, the connecting portion includes a first section and a second section connected to each other, the first section is connected to the circuit board, and the second section is used to connect to an external connection device.

[0011] In one embodiment, the connecting portion includes:

[0012] A metal connecting piece having a first end and a second end arranged oppositely, the first end of the metal connecting piece is arranged at the first section and connected with the circuit board, and the second end of the metal connecting piece is arranged at the second section and used for connecting with an external connecting device;

[0013] A magnetic core arranged at the first section, the magnetic core is configured to be arranged around the metal connecting piece.

[0014] In an embodiment, along the axial direction of the connecting part, the second sealing part is arranged around the circumferential wall of the magnetic core and at least a part of the metal connecting piece exposed outside the magnetic core.

[0015] In an embodiment, the part of the metal connecting piece exposed outside the magnetic core is provided with a lapping surface, and the second sealing part is arranged around the lapping surface along the axial direction of the connecting part.

[0016] In an embodiment, the second end of the metal connecting piece is provided with a stop piece, and the stop piece is arranged away from the lapping surface.

[0017] In an embodiment, the second end of the metal connecting piece is provided with a plurality of connecting holes corresponding to the position of the lapping surface, and the stop piece is provided with a plurality of connecting pieces, and the plurality of connecting pieces are embedded in the plurality of connecting holes one by one.

[0018] In an embodiment, the sealing piece is made of silica gel.

[0019] The utility model also provides a power connector, the power connector adopts the connector as described above, and the connecting part of the connector is used for connecting with a vehicle-mounted charging device.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The connector comprises a connecting seat, a connecting part and a sealing piece, the connecting part is connected with a circuit board of the connecting seat and is used for connecting with an external connecting device, the sealing piece comprises a first sealing part and a second sealing part which are integrally arranged, the first sealing part is arranged on the circuit board, and the second sealing part is arranged at least around a peripheral wall of the connecting part, the technical scheme of the utility model has the advantages that the first sealing part and the second sealing part which are integrally arranged can not only simplify the structure, reduce the processing procedure and save the production cost, but also can realize the sealed connection of the connecting part and the circuit board, avoid the metal scraps generated when the connecting part is pressed with the circuit board from running out of the connector and causing cleaning problems, and also can avoid the metal scraps generated when the connector is connected with the external connecting device from entering the external connecting device and causing short circuit, equipment failure and damage and other problems, so as to reduce the equipment cleaning and maintenance cost, reduce pollution, ensure the performance of the equipment and reduce the influence of the metal scraps on the connection, avoid the external water, dust and other pollutants from entering the connector and causing damage of the connector, prolong the service life of the equipment and improve the safety.

[0022] The connecting part of the connector is used for connecting with an external connecting device, and through the arrangement of the sealing piece, the sealed connection of the connector and the external connecting device is realized, and the stability of the electrical connection of the two is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0024] Figure 1 The structure schematic view of an embodiment of the connector provided by the utility model is shown in the figure.

[0025] Figure 2 The explosion view of an embodiment of the connector provided by the utility model is shown in the figure.

[0026] Figure 3 The sectional view of an embodiment of the connector provided by the utility model is shown in the figure.

[0027] EXPLANATION OF DRAWINGS

[0028] 100, connecting seat; 101, mounting groove; 110, circuit board; 120, bushing;

[0029] 200, connecting part; 201, first section; 202, second section; 210, metal connecting piece; 211, lapping surface; 212, connecting hole; 220, magnetic core; 230, blocking piece; 231, connecting piece;

[0030] 300, sealing member; 310, first sealing portion; 320, second sealing portion; 330, third sealing portion.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Generally, the connection part of the connector is crimped to the circuit board. Taking the B+ connector as an example, the B+ connector is an important connection component between the battery pack and high-voltage electrical systems such as the on-board charger (OBC), DC / DC converter, and inverter. High-quality B+ connectors are essential to ensure the safety and performance of electrical connections. The connection part is made of metal material. When connectors such as the B+ connector are used to connect to external connection devices such as the OBC (On-Board Charger) box, metal chips will be generated when the connection part is hard-crimped to the circuit board. The generated metal chips will cause poor cleaning, and if the generated metal chips enter the OBC box, it will also cause a short circuit, resulting in equipment failure or damage, and safety issues. In order to improve the poor cleaning and safety issues caused by metal chips generated by the connector, refer to Figures 1 to 3 The present invention proposes a connector and a power connector, which uses a seal 300 to seal the connection part 200 and the circuit board 110, so as to seal and protect the PCB circuit board and the connection part, prevent foreign matter such as metal chips from escaping from the connector to external connection devices such as the OBC box, causing cleanliness and safety problems, and also ensure the sealing and stability of the connection between the connector and external connection devices such as the OBC box.

[0036] The connector includes a connection base 100, a connection portion 200 and a sealing member 300. The connection base 100 has a circuit board 110. One end of the connection portion 200 is connected to the circuit board 110, and the other end of the connection portion 200 is used to connect to an external connection device.

[0037] To optimize the sealing effect, in one embodiment, the seal 300 includes an integrally arranged first sealing portion 310 and a second sealing portion 320 . The first sealing portion 310 is covered on the circuit board 110 , and the second sealing portion 320 is arranged around the peripheral wall of the connecting portion 200 .

[0038] In the related art, seals are generally composed of multiple sealing parts, and additional sealing rings are required between the connecting points of the multiple sealing parts. The embodiments of the present invention, by using an integrated first sealing part 310 and second sealing part 320, not only simplifies the structure, but also reduces the material cost of the additional sealing rings. It also reduces the number of processing stations in the production process, effectively saving processing steps and reducing costs.

[0039] The embodiment of the present invention uses an integrally arranged first sealing portion 310 and a second sealing portion 320 to seal the connection portion 200 and the circuit board 110, which can effectively prevent metal chips generated when the connection portion 200 and the circuit board 110 are crimped from escaping from the connector and causing cleaning problems. It is also used to prevent metal chips generated when the connector is connected to an external connection device from entering the external connection device and causing short circuits, equipment failures and damage, etc., thereby reducing equipment cleaning and maintenance costs and pollution. It is also used to ensure equipment performance and reduce the impact of metal chips on connections; and to prevent external pollutants such as water and dust from entering the connector and causing damage to the connector; thereby extending the service life of the equipment and improving safety.

[0040] The connecting portion of the connector is used to connect to an external connection device. Through the provision of the seal 300, it is also used to achieve a sealed connection between the connector and an external connection device such as an OBC box, thereby ensuring the stability of the electrical connection between the two.

[0041] In one embodiment, the connecting portion 200 includes a first section 201 and a second section 202 connected to each other. The first section 201 is connected to the circuit board 110 , and the second section 202 of the connecting portion 200 is used to connect to an external connection device.

[0042] It can be understood that the connecting portion 200 includes a first section 201 and a second section 202 that are connected to each other. The first section 201 and the second section 202 can be, but are not limited to, two of a plurality of connecting sections divided along the length direction of the connecting portion 200; or, the connecting portion 200 includes connecting structures such as a metal connector 210 and a magnetic core 220, and the first section 201 and the second section 202 are set on the connecting portion 200 according to the connection position or connection relationship of each connecting structure.

[0043] Specifically, in the technical solution of the present invention, in one embodiment, the connecting portion 200 includes a metal connector 210 and a magnetic core 220. The metal connector 210 has a first end and a second end that are oppositely disposed. The first end of the metal connector 210 is disposed at the first section 201 and connected to the circuit board 110, and the second end of the metal connector 210 is disposed at the second section 202 and is used to connect to an external connection device.

[0044] The magnetic core 220 is disposed in the first section 201 , and is configured to surround the metal connector 210 .

[0045] It can be understood that the first section 201 of the connecting portion 200 is set from the position where the metal connecting piece 210 has the first end to the position where the magnetic core 220 is located, and the second section 202 of the connecting portion 200 is set from the position where the metal connecting piece 210 is exposed outside the magnetic core 220 to the position where the metal connecting piece 210 has the second end. The sealing member 300 is wrapped on the first section 201, and is used to at least seal the connection position of the metal connecting piece 210 and the circuit board 110, so as to avoid the metal chips generated when the metal connecting piece 210 is hard connected with the circuit board 110 from running out of the connector to cause pollution, or even the metal chips generated when the connector is connected from entering the external connecting device to cause the safety problem.

[0046] Optionally, the metal connecting piece 210 can be, but is not limited to, an aluminum rod, a copper rod or any suitable connecting piece made of metal material for actual use.

[0047] In order to further optimize the sealing effect, in an embodiment, the first sealing portion 310 of the sealing member 300 is wrapped on the circuit board 110, and the second sealing portion 320 is arranged at least around the peripheral wall of the first section 201 of the connecting portion 200.

[0048] Through the arrangement of the first sealing portion 310 and the second sealing portion 320, the connection position of the connecting portion 200 and the circuit board 110 is at least sealed and connected. Specifically, the first sealing portion 310 is at least wrapped on the connection position of the magnetic core 220, the metal connecting piece 210 and the circuit board 110. The first sealing portion 310 can be optionally arranged as a sealing ring, a connecting sheet adapted to the connection position of the circuit board 110 and the metal connecting piece 210, etc. The second sealing portion 320 is at least arranged around the peripheral wall of the first section 201 of the connecting portion 200. The second sealing portion 320 can be optionally arranged as a sealing ring, a sealing cover adapted to the peripheral wall of the first section 201 of the connecting portion 200, etc. Herein, no limitation is made. Through the arrangement of the first sealing portion 310 and the second sealing portion 320, the connection position of the magnetic core 220, the metal connecting piece 210 and the circuit board 110 is at least sealed and connected, so as to avoid the metal chips from leaking out of the connector from the gap between the circuit board 110 and the magnetic core 220.

[0049] Through the arrangement of the sealing member 300, in addition to the metal chips generated can be prevented from entering the external connecting device, the problems such as short circuit, equipment failure and damage, etc. can be solved, the cleaning and maintenance cost of the equipment can be reduced, the pollution can be reduced, the performance of the equipment can be ensured, and the influence of the metal chips on the connection can be reduced. In addition, the external water, dust and other pollutants can be prevented from entering the connector from the gap between the circuit board 110 and the magnetic core 220, so as to avoid the damage of the connector.

[0050] Optionally, the sealing member 300 may be made of silicone, rubber (such as nitrile rubber, butyl rubber (IIR)), plastic, etc., so as to further reduce the number of processing steps and lower the production and processing costs.

[0051] Taking the example of the seal 300 being injection molded using liquid silicone as an integral sealing method, the entire connector product is placed in a mold and injection-molded and sealed using liquid silicone. The liquid silicone has its own sealing ring, which ensures the airtightness of the product when installed on the OBC box. Specifically, after completing the connection between the connecting portion 200 and the circuit board 110, the connecting portion 200 and the connecting base 100 with the circuit board 110 installed are placed in a mold. By pouring liquid silicone into the mold, the sealed connection between the connecting portion 200 and the circuit board 110 is completed, and the seal 300 is injection-molded so that the seal 300 at least covers the first section 201 of the connecting portion 200 and the connection position between the connecting portion 200 and the circuit board 110.

[0052] In addition, before liquid silicone injection molding, the circuit board 110 and other parts need to be surface cleaned and primed, and ensure that there is no damage, degumming, bubbles, etc. after injection molding, and there are no defects such as glue overflow and cracking at the boundaries between the seal 300 and the connecting part 200, the circuit board 110, the connecting seat 100, etc., to ensure that the connector has good sealing.

[0053] It should be noted that when the seal 300 also includes a third sealing part 330, a fourth sealing part or other sealing parts, the seal can be constructed by an integrated liquid silicone sealing method, so that the first sealing part 310, the second sealing part 320, the third sealing part 330 and other sealing parts are injection molded as a whole; or, after constructing the first sealing part 310 and the second sealing part 320, the third sealing part 330 and other sealing parts are further constructed by pouring liquid silicone into the mold; the specific method of making the seal can be based on the actual setting and is not limited here.

[0054] In one embodiment, a mounting groove 101 is defined on one side of the connector 100. A first sealing portion 310 fills the mounting groove 101 and covers a side of the circuit board 110 near the connecting portion 200. The first sealing portion 310 covers at least the connection between the magnetic core 220, the metal connector 210, and the circuit board 110. The mounting groove 101 of the connector 100 is provided for mounting the circuit board 110. One side of the circuit board 110 is positioned against the bottom of the mounting groove 101, and the other side of the circuit board 110 is connected to the connecting portion 200. The first sealing portion 310 fills the mounting groove 101 and covers a side of the circuit board 110 near the connecting portion 200, thereby ensuring a sealed connection between the circuit board 110 and the mounting groove 101, preventing metal chips from leaking out of the connector from between the circuit board 110 and the mounting groove 101, and further optimizing the sealing performance.

[0055] In an embodiment, the mounting groove 101 is provided with a bushing 120 on both sides, and the circuit board 110 is provided with a connecting position adapted to the bushing 120.

[0056] Optionally, the bushing 120 can be, but is not limited to, an insulating bushing or an insulating sheath, to provide electrical insulation, avoid accidental contact between the conductive parts of the connector and other metal parts, and cause short circuit or electric shock. In the technical scheme of the utility model, the circuit board 110 is provided with a connecting position adapted to the bushing 120, and the bushing 120 is further used to provide mechanical support for the connector, to reduce mechanical stress caused by vibration or external force impact, and to play a positioning role, so that the circuit board 110 can be installed at a preset position, to avoid position deviation of the circuit board 110 during installation, use and transfer, and to affect the stability and safety of electrical connection.

[0057] Optionally, the bushing 120 is protruded on both sides of the mounting groove 101. The first sealing part 310 is arranged around the bushing 120, or the sealing member 300 further comprises a third sealing part 330, and the third sealing part 330 is arranged around the bushing 120. When the third sealing part 330 is provided, the third sealing part 330 can be combined on the first sealing part 310, or the third sealing part 330 is integrally injection molded with the first sealing part 310 and the second sealing part 320. The third sealing part 330 is optionally arranged as a sealing ring, a connecting piece adapted to the bushing 120, etc. to further optimize the sealing effect, avoid leakage of metal chips from between the circuit board 110 and the bushing 120 out of the connector, and cause cleaning problems, short circuit, equipment failure and damage, etc. safety problems.

[0058] Optionally, the mounting groove 101 is further provided with a plurality of connecting grooves arranged along the groove wall of the mounting groove 101, to further limit the circuit board 110, and the first sealing part 310 or other sealing parts of the sealing member 300 are arranged around the connecting grooves.

[0059] In the embodiment of the utility model, the second sealing part 320 is arranged around the circumferential wall of the first section 201 of the connecting part 200. In an embodiment, along the axial direction of the connecting part 200, the second sealing part 320 is arranged around the circumferential wall of the magnetic core 220, and around at least part of the metal connecting piece 210 exposed outside the magnetic core 220. To further optimize the sealing effect, avoid leakage of metal chips from between the metal connecting piece 210 and the magnetic core 220 out of the connector, and cause cleaning problems, short circuit, equipment failure and damage, etc. safety problems.

[0060] In an embodiment, the part of the metal connecting piece 210 exposed outside the magnetic core 220 has a lap joint surface 211, and the second sealing part 320 is arranged around the lap joint surface 211 along the axial direction of the connecting part 200.

[0061] The metal connecting piece 210 is optionally provided in a columnar shape, one side of the part of the metal connecting piece 210 exposed outside the magnetic core 220 is arc-shaped, and the other side of the part of the metal connecting piece 210 exposed outside the magnetic core 220 is provided in a flat surface to form the lapping surface 211. Through the design of the lapping surface 211, a larger area of contact point can be provided to ensure the stability of the electrical connection with the external connecting device such as the OBC box, and the lapping surface 211 also serves as a positioning feature to ensure the alignment connection.

[0062] Specifically, along the axial direction of the connecting part 200, the second sealing part 320 surrounds the peripheral wall of the magnetic core 220 and is arranged around at least the part of the metal connecting piece 210 exposed outside the magnetic core 220. The second sealing part 320 is extended by the first section 201 of the connecting part 200 to the second section 202 of the connecting part 200, one side of the part of the metal connecting piece 210 exposed outside the magnetic core 220 is arc-shaped, and the part of the second sealing part 320 arranged at the second section 202 is arranged on the arc-shaped surface and surrounds the lapping surface 211. The other side of the second sealing part 320 away from the arc-shaped surface is optionally provided in a flat surface or a surface with a certain curvature, which is not limited here according to the actual arrangement.

[0063] In an embodiment, the second end of the metal connecting piece 210 is provided with a stop piece 230 arranged away from the lapping surface 211. One side of the part of the metal connecting piece 210 exposed outside the magnetic core 220 is arc-shaped, and the stop piece 230 is arranged on the second sealing part 320 arranged outside the arc-shaped surface; or the stop piece 230 is arranged on the arc-shaped surface and at least partially exposes the second sealing part 320 arranged outside the arc-shaped surface.

[0064] Optionally, the stop piece 230 is made of a high-conductivity material such as copper or gold-plated copper to provide a low-resistance current path and ensure the stability of the electrical connection between the connector and the external connecting device such as the OBC box.

[0065] In an embodiment, the second end of the metal connecting piece 210 is provided with a plurality of connecting holes 212 corresponding to the position of the lapping surface 211, and the stop piece 230 is provided with a plurality of connecting pieces 231, which are embedded in the plurality of connecting holes 212 one by one.

[0066] The portion of the metal connector 210 exposed outside the magnetic core 220 includes an overlapping surface 211 and an arc surface disposed opposite to each other. The stopper 230 is disposed on the arc surface. The connection hole 212 is disposed through the metal connector 210. The connector 231 disposed on the stopper 230 can optionally be configured as a connection protrusion, a connection column, or other connection structure. The positions of the multiple connectors 231 on the stopper 230 correspond one-to-one to the positions of the multiple connection holes 212 on the overlapping surface 211. In the assembled state, the connector 231 is embedded in the connection hole 212 of the metal connector 210. The provision of the stopper 230 can be used to ensure the continuity, stability, and integrity of the circuit connection when the connector is connected to a connection device such as an OBC box, so as to maintain a stable electrical connection under conditions such as vibration and external force impact, thereby avoiding interruption of the electrical connection.

[0067] Taking the sealing member 300 as an example of an integral sealing method using liquid silicone injection molding, the stopper 230 is arranged on the side of the second section 202 of the connecting part 200 opposite to the overlapping surface 211 through the connecting hole 212 provided on the metal connecting part 210, and after completing the connection between the connecting part 200 and the circuit board 110, the connecting part 200 and the connecting seat 100 with the circuit board 110 installed are placed in the mold, and by pouring liquid silicone into the mold, the sealing connection between the connecting part 200 and the circuit board 110, the stopper 230 and the metal connecting part 210 is completed, and the injection molding of the sealing member 300 is realized.

[0068] The present invention also provides a power connector, which adopts the connector as described in the above embodiment. The specific structure of the connector refers to the above embodiment. Since the power connector adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0069] When the connector is used as a power connector, such as a B+ connector, the connector's connection portion 200 is used to connect to the vehicle's onboard charging device. Specifically, the connector connects the battery pack to high-voltage electrical systems, such as the onboard charger (OBC), DC / DC converter, and inverter. The specific configuration of the connector depends on the actual application scenario and is not limited here.

[0070] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A connector, characterized in that: include: A connecting seat having a circuit board; a connecting portion, one end of which is connected to the circuit board, and the other end of which is used to connect to an external connecting device; The sealing member includes a first sealing portion and a second sealing portion which are integrally provided. The first sealing portion is covered on the circuit board, and the second sealing portion is provided around the peripheral wall of the connecting portion.

2. The connector according to claim 1, wherein: A mounting groove is provided on one side of the connecting seat, and the first sealing portion fills the mounting groove and covers a side surface of the circuit board close to the connecting portion.

3. The connector according to claim 2, wherein: Bushings are provided on both sides of the installation groove, the sealing member further includes a third sealing portion, the circuit board is provided with a connection position adapted to be connected with the bushing, and the third sealing portion is arranged around the bushing.

4. The connector according to claim 1, wherein: The connecting portion includes a first section and a second section connected to each other, the first section is connected to the circuit board, and the second section is used to connect to an external connection device.

5. The connector according to claim 4, wherein: The connecting portion includes: a metal connector having a first end and a second end opposite to each other, the first end of the metal connector being disposed at the first section and connected to the circuit board, and the second end of the metal connector being disposed at the second section and configured to connect to an external connection device; A magnetic core is provided in the first section, and the magnetic core is configured to surround the metal connecting piece.

6. The connector according to claim 5, wherein: Along the axial direction of the connecting portion, the second sealing portion surrounds the peripheral wall of the magnetic core and is arranged around at least a portion of the metal connecting member exposed outside the magnetic core.

7. The connector according to claim 6, wherein: The portion of the metal connector exposed outside the magnetic core is provided with an overlapping surface, and the second sealing portion is arranged around the overlapping surface along the axial direction of the connecting portion.

8. The connector according to claim 7, wherein: A stopper is provided at the second end of the metal connector, and the stopper is arranged opposite to the overlapping surface.

9. The connector according to claim 8, wherein: A plurality of connection holes are formed at the second end of the metal connector corresponding to the overlapped surface. The blocking member is provided with a plurality of connection members, and the plurality of connection members are embedded in the plurality of connection holes one by one.

10. The connector according to any one of claims 1 to 9, characterized in that: The sealing element is made of silicone.

11. A power connector, characterized in that: The power connector is the connector according to any one of claims 1 to 10, and the connecting portion of the connector is used to connect to a vehicle-mounted charging device.

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