CN206712649U - High pressure through terminal and controller - Google Patents

Abstract

The utility model provides a high-voltage wire-passing terminal and a controller. The high-voltage wire-passing terminal includes a housing, a plurality of sealing rings and a plurality of locking parts, wherein: the housing has a plurality of Each cable hole includes a first section on the side of the wire inlet and a second section on the side of the outlet, and the first section and the second section of the cable hole have an inner wall protruding from the first section. step; the outer diameter of the sealing ring matches the diameter of the first section of the cable hole, each sealing ring is placed in the first section of a cable hole and one end of the sealing ring is against the step; each locking member has The through hole for the cable to pass through, and the locking member locks on the housing and presses the sealing ring in the first section of the corresponding cable hole to achieve sealing. The utility model integrates multiple cable holes into one structure and adopts an installation method suitable for vehicle maintenance, which greatly reduces the overall cost and reduces the workload of installation and maintenance.

Description

High-voltage over-the-line terminal and controller

technical field

The utility model relates to the field of power modules, in particular to a high-voltage wire-passing terminal and a controller.

Background technique

Power modules (such as IGBTs, insulated gate bipolar transistors) meet the various needs of electrical equipment by converting electrical energy from one form to another, so as to achieve the purpose of optimal use of electrical energy. It is a high-efficiency energy-saving system and industrial The core component of the automation system has been widely used in electric vehicle controllers, renewable energy (solar and wind energy) and other fields.

At present, the high-voltage outlet terminals of power modules mainly adopt structures of waterproof connector type, pass-through type, connector type and quick-plug connector type. Although the cost of the waterproof connector type high-voltage outlet terminal is low, it requires a large operating space, which greatly limits the mechanical design of the drive motor controller; similarly, the through-type high-voltage outlet terminal is also inconvenient to operate and not convenient for vehicle maintenance. Problem: The cost of the connector-type high-voltage outlet terminal is moderate and the operation is convenient, but the connection part must be made together with the cable. This structural feature is convenient for the vehicle supplier who provides the powertrain to carry out product design (that is, the drive motor and the motor controller. package design), but not suitable for suppliers who only provide drive motors or motor controllers. Although the quick-plug connector type high-voltage wire terminal is easy to operate, the cost is relatively high.

Utility model content

The technical problem to be solved by the utility model is to provide a new high-voltage outlet terminal and a controller for the problem that the above-mentioned high-voltage outlet terminal cannot take into account the cost and the operation space requirement.

The technical solution of the utility model to solve the above-mentioned technical problems is to provide a high-voltage wire-passing terminal, including a housing, a plurality of sealing rings and a plurality of locking parts, wherein: the housing has a plurality of holes for cable threading. Cable holes; each cable hole includes a first section on the side of the wire inlet and a second section on the side of the outlet, with a step protruding from the inner wall of the first section between the first section and the second section of the cable hole ; The outer diameter of the sealing ring matches the diameter of the first section of the cable hole, each sealing ring is placed in the first section of a cable hole and one end of the sealing ring is against the step; each locking member has a The through hole through which the cable passes, and the locking member locks on the housing and presses the sealing ring in the first section corresponding to the cable hole to achieve sealing.

In the high voltage cable terminal according to the present invention, the diameter of the second section of the cable hole is smaller than the diameter of the first section, and the step is formed by the diameter difference between the first section and the second section.

In the high-voltage wire terminal described in the present invention, the outer surface of the sealing ring is bowl-shaped, and the diameter of the outer surface of the sealing ring on the side of the step is larger than the diameter on the side away from the step.

In the high-voltage over-wire terminal described in the present invention, the shape and size of the inner wall of one end of the locking member that contacts the sealing ring match the shape and size of the outer surface of the sealing ring.

In the high-voltage wire-passing terminal described in the present invention, a shielding ring is provided in each of the cable holes, and the shielding ring is located in the second section of the cable hole.

In the high-voltage over-wire terminal described in the present invention, the shielding ring includes a plurality of elastic sheets, and the plurality of elastic sheets are evenly distributed around the central axis of the second section of the cable hole.

In the high-voltage wire-passing terminal described in the present invention, the housing outside the second section of all cable holes is formed with an insertion part that is assembled into the chassis of the power electronic unit or the motor; and the insertion part has a ring around the A groove on the outer periphery of the insertion part, the groove is equipped with a sealing filler.

In the high-voltage wire terminal described in the present invention, the housing has at least two lugs protruding above the insertion part, and each lug has a fixing hole.

In the high-voltage wire-passing terminal described in the present invention, the inner wall of the cable hole has an internal thread, at least a part of the outer circumference of the locking member has an external thread, and the locking member is connected by the external thread and the internal thread. The fit locks into the cable hole.

The utility model also provides a controller, including a case and a power electronic unit located in the case. The case is equipped with one or more high-voltage wire terminals as described above, and external cables are connected to the controller through the high-voltage wire terminals. .

The high-voltage wire passing terminal and controller of the utility model have the following beneficial effects: by integrating multiple cable holes into one structure and adopting a radial sealing structure, the overall cost is greatly reduced, space is saved, and there is no need to reserve space for wrenches . The utility model also gets rid of the traditional scheme of the side design of the installation panel through the top fixing hole, and reduces the workload of installation and maintenance.

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of the high-voltage over-wire terminal of the present invention.

Fig. 2 is a schematic diagram of the front of the embodiment of the high-voltage wire passing terminal of the present invention.

Fig. 3 is a top view of an embodiment of the high-voltage over-wire terminal of the present invention.

Fig. 4 is a cross-sectional view of the high-voltage wire terminal of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1-4, it is a schematic diagram of the embodiment of the high-voltage wire terminal of the present invention. The high-voltage wire terminal can be applied to new energy vehicle batteries, motors and electronic control units, and can also be used in motors on industrial frequency converters. Controllers etc. have high voltage power electronics unit wiring. The high-voltage wire terminal in this embodiment includes a housing 10, a plurality of sealing rings 30, and a plurality of locking pieces 20. There are a plurality of cable holes 11 on the body 10 (for example, 2 cable holes 11 shown in FIGS. 1-4 , or 3 or more cable holes 11 ) for cable threading. The above-mentioned plurality of cable holes 11 are arranged side by side (for example, the central axes are parallel) or staggered (such as a folded line, a character shape, etc.), and each cable hole 11 includes the first cable hole 11 located at the line inlet side (ie, the left side shown in FIG. 4 ). One section and the second section on the outlet side (ie, the right side as shown in Figure 4). There is a step protruding from the inner wall of the first section between the first section and the second section of the cable hole 11 . The outer diameter of the sealing rings 30 matches the diameter of the first section of the cable hole 11, each sealing ring 30 is placed in the first section of a cable hole 11 and one end of the sealing ring 30 abuts against the step. Each locking member 20 has a through hole for cables to pass through, and the locking member 20 is locked on the housing 10 and presses the sealing ring 30 in the first section of the corresponding cable hole 11 to achieve sealing.

Specifically, the locking member 20 can be locked on the housing 10 in the following manner: an internal thread is provided on the inner wall of the cable hole 11, and at least a part of the outer circumference of the locking member 20 has an external thread, and the locking member 20 is connected to the outer thread through the external thread. The fit of the internal thread is locked to the cable hole 11 . At this time, when using the above-mentioned high-voltage wire-passing terminal for wiring (assuming that the high-voltage wire-passing terminal has been fixed to the controller chassis), insert the terminal of the cable into the through hole of the locking member 20, and then put the sealing ring 30 into the first section of the cable hole 11 and one end against the step; then insert the terminal of the cable from the cable hole 11 into the cable hole 11 and pass through the outlet; The locking piece 20 on the cable is inserted into the first section of the cable hole 11 from the cable inlet and tightened, so that the sealing ring 30 is pressed by the step and the locking piece 20 to deform it, filling the gap between the cable and the inner wall of the cable hole 11 gap to achieve sealing.

The above-mentioned high-voltage wire-passing terminal integrates multiple waterproof cable holes 11 into one housing, which can greatly save cost and assembly space compared with a single waterproof connector.

Particularly, the step in the above-mentioned cable hole 11 can be realized in the following manner: the diameter of the second section of the cable hole 11 is smaller than the diameter of the first section, and the step is formed by the diameter difference between the first section and the second section, as shown in Figure 4 shown. Of course, in practical applications, the diameters of the first section and the second section of the cable hole 11 can also be made the same, so that the step not only protrudes from the inner wall of the first section of the cable hole 11, but also protrudes from the inner wall of the second section of the cable hole. .

In order to improve the sealing effect, the outer surface of the sealing ring 30 can be bowl-shaped, and the diameter of the outer surface of the sealing ring 30 on the side of the step is greater than the diameter of the side away from the step, that is, the outer circumference of the left side of the sealing ring 30 in FIG. 4 The diameter is larger than the outer peripheral diameter on the right. In this way, the sealing ring 30 can be pressed against the surface of the cable, achieving a seal.

In addition, the shape and size of the inner wall of the locking member 20 at the end contacting the sealing ring 30 can be matched with the outer surface of the sealing ring 30 . When the locking piece 20 is screwed into the first section of the cable hole 11, the smaller part of the outer diameter of the sealing ring 30 is inserted into the larger part of the inner diameter of the locking piece 20, and the locking piece 20 can be screwed continuously to The compression seal ring 30 is fully attached to the surface of the cable, thereby achieving a seal.

In order to realize the shielding of the high-voltage cable and the power electronic unit, a shielding ring 40 can be added to the above-mentioned high-voltage wire-passing terminal. Specifically, a shielding ring 40 can be provided in each cable hole 11 , and the shielding ring 40 can be located at the second section of the cable hole 11 .

As shown in FIGS. 2 and 4 , the above-mentioned shielding ring 40 may include a plurality of elastic pieces, and the plurality of elastic pieces are evenly distributed around the central axis of the second section of the cable hole 11 . In particular, the free ends of the above-mentioned plurality of elastic pieces are claw-shaped, which protrude toward the outlet of the cable hole 11 and protrude into the second section of the cable hole 11, so that the cable can be tightly hugged when the cable is inserted, and the shielding effect can be greatly improved. .

In order to facilitate the installation of the above-mentioned high-voltage over-wire terminals to the controller's chassis, an insertion part 14 is formed on the housing 10 outside the second section of all the cable holes 11, and the insertion part 14 has a ring around the outer circumference of the insertion part 14. groove, and a sealing filler (for example: sealing ring) 50 is installed in the groove, so as to realize the sealing between the chassis and the housing 10 .

On the housing 10, at least two lugs 12 that protrude above the groove of the insertion part 14 can also be added, and each lug 12 can have a fixing hole 13, so as to facilitate the high-pressure screw connection through mechanical fixing methods such as screw connection. The wire passing terminal is fixedly connected with the main body of the controller chassis. Through the top fixing hole and the radial sealing structure, the high-voltage wire terminal can completely get rid of the limitation of wrench space when using the installation panel structure, saving space. When the controller using the above-mentioned high-voltage wire-passing terminal is installed on the whole vehicle, compared with the existing side installation structure, the above-mentioned top fixing structure not only saves space, but also facilitates maintenance.

The utility model also provides a controller, including a case and a power electronic unit (such as IGBT, etc.) located in the case, wherein the case is equipped with one or more of the above-mentioned high-voltage wire terminals, and the external high-voltage cables pass through the high-voltage wire terminals Connect the controller.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A high-voltage wire-passing terminal, characterized in that it includes a housing, a plurality of sealing rings and a plurality of locking parts, wherein: the housing has a plurality of cable holes for cable threading; each cable hole It includes a first section on the side of the wire inlet and a second section on the side of the outlet. There is a step protruding from the inner wall of the first section between the first section and the second section of the cable hole; the outer surface of the sealing ring The diameter matches the diameter of the first section of the cable hole, each sealing ring is placed in the first section of a cable hole and one end of the sealing ring is against the step; each locking piece has a through hole for the cable to pass through, And the locking member is locked on the housing and presses the sealing ring in the first section corresponding to the cable hole to achieve sealing. 2. The high voltage cable terminal according to claim 1, characterized in that: the diameter of the second section of the cable hole is smaller than the diameter of the first section and the step is formed by the diameter difference between the first section and the second section . 3. The high voltage cable terminal according to claim 1, characterized in that: the outer surface of the sealing ring is bowl-shaped, and the diameter of the outer surface of the sealing ring on the side of the step is larger than the diameter on the side away from the step. 4. The high-voltage cable terminal according to claim 3, characterized in that: the inner wall of one end of the locking member contacting the sealing ring matches the shape and size of the outer surface of the sealing ring. 5 . The high voltage cable terminal according to claim 1 , wherein a shielding ring is provided in each of the cable holes, and the shielding ring is located in the second section of the cable hole. 5 . 6 . The high voltage cable terminal according to claim 5 , wherein the shielding ring comprises a plurality of elastic pieces, and the plurality of elastic pieces are evenly distributed around the central axis of the second section of the cable hole. 6 . 7. The high-voltage over-wire terminal according to claim 1, characterized in that: the housing outside the second section of all cable holes is formed with an insertion part that is assembled into the chassis of the power electronic unit or the motor; and the insertion part There is a groove surrounding the outer periphery of the insertion part on the part, and a sealing filler is installed in the groove. 8 . The high-voltage cable terminal according to claim 7 , wherein the housing has at least two lugs protruding above the insertion portion, and each lug has a fixing hole. 9. The high-voltage wire terminal according to claim 1, characterized in that: the inner wall of the cable hole has internal threads, at least a part of the outer circumference of the locking member has external threads, and the locking member passes through the outer The fit of thread and internal thread locks to the cable hole. 10. A controller, comprising a case and a power electronic unit located in the case, the case is equipped with one or more high-voltage over-wire terminals as claimed in any one of claims 1-9, and the external cables pass through the high-voltage Connect the controller through the terminal.