Plug and high voltage connector

Abstract

The utility model relates to connector technical field especially plug and high pressure connector. The plug includes plug shell and the plug power contact and plug shielding piece of installing in the plug shell, and the plug shell is equipped with the plug interface to the plug power contact and plug shielding piece, and the probe insertion channel that still is set up from outside to inside to the plug power contact is still provided on the plug shell, and the probe insertion channel avoids the setting of plug shielding piece, or the probe insertion channel sets up in the side of plug interface, is independent of plug interface and sets up through plug shielding piece. In the insulation maintenance, the probe is inserted from the special probe insertion channel, and since the probe insertion channel limits the insertion path of the probe, the probe can only contact the plug power contact in the insertion process, cannot contact other metal components except the plug power contact, so that the probe cannot contact the plug power contact and plug shielding piece simultaneously, thereby improving the maintenance safety.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to plugs and high-voltage connectors. Background Technology

[0002] Pure electric commercial vehicles have large battery capacities and various battery configurations. To meet the battery capacity requirements of different models, commercial vehicles design battery packs as standard packs with different cell capacities. These standard battery packs do not contain contactors, so the battery input and output circuits are always energized. When an insulation fault occurs in the vehicle, to quickly determine whether the problem is with the power system insulation or the high-voltage side insulation of the vehicle, and to improve repair efficiency and safety, the battery circuit interface connector of the multi-in-one controller is first disconnected. The plug harness of this connector connects to the power system, and the socket connects to the multi-in-one controller. By checking the insulation of the plug harness, the problem can be ruled out as a power system insulation issue.

[0003] The current industry standard for connector plugs used in the battery circuit interface of multi-function controllers is as follows: Figure 1-2 As shown, the plug includes a handle 11, a plug housing 12, and components such as a plug power contact 13 and a plug shield 15 installed inside the plug housing 12. The handle 11 is rotatably mounted on the outside of the plug housing 12. The plug housing 12 has a plug interface 21 corresponding to the plug power contact 13 and the plug shield 15, for the plug power contact and the plug shield of the adapter socket to be inserted and make contact with the plug power contact 13 and the plug shield 15 respectively. The plug housing 12 includes a plug outer shell 22, a plug inner insulator 14 installed inside the plug housing 22, and an insulating pressure plate 16 fixed at the plug end of the plug housing 22. The plug power contact 13 is installed in the plug inner insulator 14, and the plug shield 15 is wrapped around the plug inner insulator 14. The plug shield 15 has an elastic abutment section 152 for contacting the plug shield of the adapter socket. An electrical gap is reserved between the plug power contact 13 and the plug shield 15 on its left and right sides.

[0004] Because commercial vehicle battery packs do not contain contactors, the battery input and output circuits are constantly energized. Furthermore, while the power contacts and shields on either side of the connectors used in current multi-function controller battery circuit interfaces meet electrical clearance requirements, they are not spatially insulated. The internal insulator of the connector does not completely physically isolate the power contacts from the shields. Therefore, during battery insulation testing, when a probe is inserted into the connector housing, it may simultaneously contact both the power contacts and the shields. If the battery has already experienced single-point insulation failure, this contact could cause double-point insulation failure, leading to safety issues and potentially causing injuries during maintenance. Utility Model Content

[0005] The purpose of this utility model is to provide a plug to solve the problem that the connector used in the current industry for the battery circuit interface of multi-function controllers may cause safety hazards due to the possibility that the probe may simultaneously contact the power contact and the shield of the plug during the insulation inspection process; the purpose of this utility model is also to provide a high-voltage connector to solve the aforementioned problems.

[0006] To achieve the above objectives, the plug of this utility model adopts the following technical solution:

[0007] The plug includes a plug housing and a plug power contact and a plug shield installed inside the plug housing. The plug housing has a socket corresponding to the plug power contact and the plug shield. The plug housing also has a probe insertion channel that extends from the outside to the plug power contact. The probe insertion channel is set away from the plug shield, or the probe insertion channel is set on the side of the socket, independent of the socket and passing through the plug shield.

[0008] Furthermore, the probe insertion channel is located close to the plug interface. The insulating pressure plate and the inner insulator of the plug housing are respectively provided with a high-voltage detection port and a probe through-hole. The plug shield is provided with a probe avoidance port corresponding to the high-voltage detection port, so that the high-voltage detection port and the probe through-hole are connected to form the probe insertion channel.

[0009] Furthermore, the high-voltage detection port, probe avoidance port, and probe through port correspond in the insertion direction.

[0010] Furthermore, the insulating pressure plate has a shielding partition extending inward along the insertion direction on its plate body extending perpendicular to the insertion direction. The shielding partitions are arranged in pairs on the left and right, and the two shielding partitions in the same pair cooperate to form a constraint channel from the high voltage detection port to the probe through-hole to avoid the probe from deflecting and contacting the plug shield.

[0011] Furthermore, the shielding barrier extends inward through the front side of the plug shield to completely separate the probe insertion channel from the plug shield.

[0012] Furthermore, the shielding barrier extends into the interior of the plug insulator, which is included in the plug housing.

[0013] Furthermore, the probe orifice has a flared guide portion at the front end for guiding probe insertion.

[0014] Furthermore, a sealing ring is provided at the plug end of the plug housing, and an insulating pressure plate is pressed onto the sealing ring, with the high-voltage detection port located inside the sealing ring.

[0015] Beneficial effects: This utility model plug is an improved invention. By providing a dedicated probe insertion channel on the plug housing that extends from the outside to the plug power contact, during insulation maintenance, the probe is inserted through the dedicated probe insertion channel. Because the probe insertion channel restricts the probe's insertion path, the probe can only contact the plug power contact during insertion and cannot contact other metal parts besides the plug power contact. The probe cannot simultaneously contact the plug power contact and the plug shield, thereby improving maintenance safety.

[0016] The high-voltage connector of this utility model adopts the following technical solution:

[0017] A high-voltage connector includes a plug and a socket. The plug includes a plug housing and a plug power contact and a plug shield installed inside the plug housing. The plug housing has a mating interface corresponding to the plug power contact and the plug shield. The plug housing also has a probe insertion channel that extends from the outside to the plug power contact. The probe insertion channel is set away from the plug shield, or the probe insertion channel is set beside the mating interface, independent of the mating interface and passing through the plug shield.

[0018] Furthermore, the probe insertion channel is located close to the plug interface. The insulating pressure plate and the inner insulator of the plug housing are respectively provided with a high-voltage detection port and a probe through-hole. The plug shield is provided with a probe avoidance port corresponding to the high-voltage detection port, so that the high-voltage detection port and the probe through-hole are connected to form the probe insertion channel.

[0019] Furthermore, the high-voltage detection port, probe avoidance port, and probe through port correspond in the insertion direction.

[0020] Furthermore, the insulating pressure plate has a shielding partition extending inward along the insertion direction on its plate body extending perpendicular to the insertion direction. The shielding partitions are arranged in pairs on the left and right, and the two shielding partitions in the same pair cooperate to form a constraint channel from the high voltage detection port to the probe through-hole to avoid the probe from deflecting and contacting the plug shield.

[0021] Furthermore, the shielding barrier extends inward through the front side of the plug shield to completely separate the probe insertion channel from the plug shield.

[0022] Furthermore, the shielding barrier extends into the interior of the plug insulator, which is included in the plug housing.

[0023] Furthermore, the probe orifice has a flared guide portion at the front end for guiding probe insertion.

[0024] Furthermore, a sealing ring is provided at the plug end of the plug housing, and an insulating pressure plate is pressed onto the sealing ring, with the high-voltage detection port located inside the sealing ring.

[0025] Beneficial Effects: This utility model of a high-voltage connector is an improved invention. By providing a dedicated probe insertion channel on the plug housing that extends from the outside to the plug power contact, during insulation maintenance, the probe is inserted through this dedicated channel. Because the probe insertion channel restricts the probe's insertion path, the probe can only contact the plug power contact during insertion and cannot contact other metal parts besides the plug power contact. This prevents the probe from simultaneously contacting both the plug power contact and the plug shield, thereby improving maintenance safety. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the connector plug used in the battery circuit interface of an all-in-one controller in the prior art;

[0027] Figure 2 for Figure 1 Sectional view at PP;

[0028] Figure 3 This is a schematic diagram of the plug structure in an embodiment of the high-voltage connector of this utility model;

[0029] Figure 4 for Figure 3 Sectional view at point AA;

[0030] Figure 5 This is a schematic diagram of the plug shield in an embodiment of the high-voltage connector of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the insulator inside the plug in an embodiment of the high-voltage connector of this utility model;

[0032] In the diagram: 11. Handle; 12. Plug housing; 13. Plug power contact; 14. Plug inner insulator; 141. Probe through-hole; 142. Flared guide section; 15. Plug shield; 151. Probe clearance opening; 152. Flexible contact section; 16. Insulating pressure plate; 161. Pressure plate body; 162. Shielding barrier; 163. High voltage detection port; 17. Shielding barrier through-hole; 18. Sealing ring; 19. Wiring harness; 21. Plug interface; 22. Plug housing. Detailed Implementation

[0033] This invention improves upon the existing high-voltage connector structure by providing a dedicated probe insertion channel on the plug housing. This channel allows for probe insertion for insulation inspection. The insertion channel restricts the probe's path, ensuring that the probe can only contact the plug's power contacts during insertion and cannot contact other metal components. The probe cannot simultaneously contact both the plug's power contacts and the plug shield, thus improving the standardization and safety of the inspection process.

[0034] Based on the above inventive concept, the embodiments of this utility model are described in detail below.

[0035] Embodiments of the high-voltage connector of this utility model:

[0036] High-voltage connectors include plugs and sockets. For example... Figure 3-4 As shown, the plug includes a handle 11, a plug housing 12, and components such as a plug power contact 13 and a plug shield 15 installed inside the plug housing 12. The handle 11 is rotatably mounted on the outside of the plug housing 12. The plug housing 12 is L-shaped, with the front end being a plug-in end for mating with an adapter socket. The plug housing 12 has insertion interfaces 21 corresponding to the plug power contact 13 and the plug shield 15, for the adapter socket's socket power contact and socket shield to insert and make contact with the plug power contact 13 and the plug shield 15 respectively. The rear end of the plug power contact 13 is connected to a wire harness 19. The plug housing 12 includes a plug outer shell 22, an inner plug insulator 14 installed inside the plug outer shell 22, and an insulating pressure plate 16 fixed at the plug-in end of the plug outer shell 22. The plug power contact 13 is installed in the inner plug insulator 14, and the plug shield 15 is wrapped around the inner plug insulator 14. There is an electrical gap between the plug power contact 13 and the plug shields 15 on its left and right sides. The structure of the plug shield 15 is as follows Figure 5 As shown, the overall structure is cylindrical, with a through hole for the plug power contact 13 to pass through and an inwardly folded elastic abutment section 152. The elastic abutment section 152 is used to form electrical contact with the socket shield of the adapter socket when the socket is plugged in, thereby forming a shielding loop inside the connector and ensuring the shielding effect. The structure of the plug inner insulator 14 is as follows. Figure 6 As shown, the whole structure is cylindrical and has a through hole through which the plug power contact 13 can pass.

[0037] like Figure 3-4 As shown, the plug housing 12 is provided with a probe insertion channel extending from the outside to the plug power contact 13. The probe insertion channel is located beside the plug interface 21, independent of the plug interface 21, and passes through the plug shield 15. Specifically, the probe insertion channel is located close to the plug interface 21, directly below the plug interface 21. A high-voltage detection port 163 is provided on the insulating pressure plate 16, and a probe through-hole 141 is provided on the inner insulator 14 of the plug corresponding to the high-voltage detection port 163 (see figure). Figure 6 A probe clearance port 151 is provided on the plug shield 15 corresponding to the high voltage detection port 163 (visible). Figure 5The high-voltage detection port 163 and the probe through-hole 141 are connected to form a probe insertion channel. The probe clearance port 151 is much larger than the probe size to ensure that the probe will not come into contact with the plug shield 15 when inserted. The high-voltage detection port 163 is sized to meet the IPXXB protection level to prevent fingers from touching the internal conductors.

[0038] By providing a dedicated probe insertion channel beside the connector 21, probes are inserted through this dedicated channel for insulation inspection. The probe insertion channel restricts the probe's insertion path, ensuring that the probe can only contact the plug power contact 13 during insertion and cannot contact other metal components. The probe cannot simultaneously contact the plug power contact 13 and the plug shield 15, thus improving the standardization and safety of the inspection process. Since the probe insertion channel is located beside and independent of the connector 21, it eliminates the need to adjust the existing connector 21 structure; only the existing connector structure needs to be supplemented with a new probe insertion channel, making installation easier.

[0039] Preferably, the probe insertion channel extends along the insertion direction, that is, the high voltage detection port 163, the probe avoidance port 151 and the probe through port 141 correspond in the insertion direction. The advantage of this arrangement is that during insulation maintenance, the probe can be inserted along the insertion direction, avoiding the probe being inserted at an angle and accidentally touching the plug shield 15, thereby further improving maintenance safety.

[0040] like Figure 4 As shown, the insulating pressure plate 16 includes a pressure plate body 161 and a shielding partition 162 disposed on the inner side of the pressure plate body 161 and extending inward perpendicularly to the pressure plate body 161. The pressure plate body 161 extends perpendicularly to the insertion direction, and the shielding partition 162 extends inward along the insertion direction. A high-voltage detection port 163 is disposed on the pressure plate body 161. Figure 5 As shown, the front plate of the plug shield 15 has a clearance structure for avoiding the shielding barrier 162. This clearance structure shares an opening with the probe clearance port 151, and the opening size ensures that it can simultaneously avoid both the probe and the shielding barrier 162. Figure 6 As shown, the front plate of the plug inner insulator 14 has a shielding barrier through-hole 17 through which the shielding barrier 162 can pass. Figure 4As shown, the shielding partition 162 passes inward through the plug shield 15 and then through the shielding partition through-hole 17 on the plug inner insulator 14 to enter the interior of the plug inner insulator 14. The shielding partitions 162 are arranged in pairs, and the two shielding partitions 162 in the same pair cooperate to form a constraint channel from the high-voltage detection port 163 to the probe through-hole 141. This constraint channel can further constrain the insertion direction of the probe, preventing the probe from deflecting and contacting the plug shield 15. When the probe continues to extend inward after entering the dedicated high-voltage detection port 163, due to the constraint effect of the constraint channel, the probe can only continue to pass through the probe clearance port 151 on the plug shield 15 and the probe through-hole 141 on the plug inner insulator 14 to enter the interior of the plug inner insulator 14 and make contact with the plug power contact 13. It cannot contact other metal parts other than the plug power contact 13, further improving operational safety.

[0041] Considering that the probe opening 141 is located inside the socket housing and cannot be observed with the naked eye, a flared guide portion 142 is provided at the front end of the probe opening 141 to guide the probe insertion, in order to enable the probe to smoothly enter the probe opening 141 and make contact with the plug power contact 13. Based on the primary guidance provided by the constraint channel, the flared guide portion 142 can serve as a secondary guiding structure, guiding the probe to quickly insert into the probe opening 141, thereby improving detection efficiency.

[0042] like Figure 4 As shown, a sealing ring 18 is provided at the insertion interface 21 of the plug housing 12 to form a circumferential seal after the plug and socket are inserted. An insulating pressure plate 16 is pressed against the sealing ring 18, and the high-voltage detection port 163 is located inside the sealing ring 18 to ensure the sealing function after insertion and prevent water or dust from entering the plug and contacting the power conductor, leading to short circuit and burn-out problems.

[0043] When performing high-voltage testing on the high-voltage connector of this utility model, the high-voltage testing of the plug can be carried out through a dedicated probe insertion channel. This ensures that the probe can only contact the plug power contact 13 during insertion and cannot contact other metal parts besides the plug power contact 13. The probe cannot simultaneously contact the plug power contact 13 and the plug shield 15, thereby improving the safety and standardization of maintenance operations.

[0044] Of course, this utility model is not limited to the embodiments described above.

[0045] For example, in the above embodiment, the probe insertion channel is located beside the connector, independent of the connector, and passes through the plug shield. In other embodiments, the probe insertion channel can also be located inside the connector, avoiding the plug shield. This maintains the existing plug shield structure, and the probe insertion channel directly avoids the plug shield, thus ensuring that the probe does not contact the plug shield during insertion.

[0046] For example, in other embodiments, the high-voltage detection port on the insulating pressure plate, the probe avoidance port on the plug shield, and the probe through-hole on the plug inner insulator can also be tilted and correspond to the insertion direction, that is, the probe insertion channel is a channel that extends at an angle to the insertion direction and has a certain angle with the insertion direction.

[0047] For example, in other embodiments, the insulating pressure plate may not be shielded or blocked. In this case, there is no constrained channel, and the probe can be inserted as much as possible along the insertion direction, which is also feasible.

[0048] For example, in other embodiments, the shielding barrier on the insulating pressure plate may not extend into the inner insulator of the plug, but only pass inward through the front side of the plug shield to completely separate the probe insertion channel from the plug shield. This also provides a good restraining effect, and in this case, it is not necessary to provide a shielding barrier perforation on the inner insulator of the plug. Alternatively, the length of the shielding barrier can be shorter, so that the shielding barrier does not pass through the front side of the plug shield, and the inner end of the shielding barrier is close to the front side of the plug shield, which can also provide a restraining effect.

[0049] For example, in other embodiments, the probe opening on the inner insulator of the plug can be a conical hole with the larger end facing outwards and the smaller end facing inwards to guide the probe to be inserted quickly. Of course, the probe opening may also be without a guiding structure.

[0050] This utility model also provides an embodiment of a plug, the specific structure of which is the same as the specific structure of the plug in the embodiment of the high-voltage connector described above, and will not be repeated here.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A plug comprising a plug housing, a plug power contact and a plug shield mounted in the plug housing, the plug housing having a plug mating face corresponding to the plug power contact and the plug shield, characterized in that: The plug housing is also provided with a probe insertion channel that extends from the outside to the inside to the plug power contact. The probe insertion channel is set away from the plug shield, or the probe insertion channel is set on the side of the plug interface, independent of the plug interface and passing through the plug shield.

2. The plug of claim 1, wherein: The probe insertion channel is located close to the plug interface. The insulating pressure plate and the inner insulator of the plug housing are respectively provided with a high voltage detection port and a probe through port. The plug shield is provided with a probe avoidance port corresponding to the high voltage detection port, so that the high voltage detection port and the probe through port are connected to form the probe insertion channel.

3. The plug of claim 2, wherein: The high-voltage detection port, probe avoidance port, and probe through port correspond to each other in the insertion direction.

4. The plug of claim 3, wherein: The insulating pressure plate has a shielding partition extending inward along the insertion direction on its plate body that extends perpendicular to the insertion direction. The shielding partitions are arranged in pairs on the left and right. The two shielding partitions in the same pair cooperate to form a constraint channel from the high voltage detection port to the probe through-hole to avoid the probe from deflecting and contacting the plug shield.

5. The plug of claim 4, wherein: The shielding barrier extends inward through the front side of the plug shield to completely separate the probe insertion channel from the plug shield.

6. The plug of claim 5, wherein: The shielding barrier extends into the interior of the plug housing, which includes the plug's internal insulator.

7. The plug of any one of claims 4-6, wherein: The probe has a flared guide at the front end of the probe opening to guide the probe insertion.

8. The plug of any one of claims 2-6, wherein: A sealing ring is provided at the plug end of the plug housing, and an insulating pressure plate is pressed on the sealing ring. The high-voltage detection port is located inside the sealing ring.

9. A high voltage connector comprising a plug and a socket, characterized in that: The plug is the plug as described in any one of claims 1-8.

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