CN218343420U

CN218343420U - Electrical connector

Info

Publication number: CN218343420U
Application number: CN202222507670.5U
Authority: CN
Inventors: 王超; 初殿军
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2023-01-20
Anticipated expiration: 2032-09-21
Also published as: WO2024061325A1

Abstract

The utility model provides an electric connector, this electric connector includes: the device comprises a conductive mechanism, a connecting device, an insulating shell and a current detection device, wherein the current detection device comprises a current sensor and a signal connecting device; the conductive mechanism is arranged in the insulating shell, and part of the connecting device is positioned in the insulating shell and is electrically connected with the conductive mechanism; the current detection device is arranged on the insulating shell, the signal connection device is electrically connected with the current sensor to transmit a detection signal of the current sensor, and the technical problem that the electric connector of the new energy automobile is easily damaged due to overcurrent and the safety of the automobile is affected is solved.

Description

Electrical connector

Technical Field

The utility model relates to a new energy automobile's technical field especially relates to an electric connector.

Background

With the development of the new energy automobile field, the application proportion of the high-voltage electric connector on the automobile is higher and higher. The new energy automobile has heavy current and large voltage in the driving and charging and discharging processes, and the temperature rise of each high-voltage system device is high. In the kinetic energy transmission process of the automobile, the conditions of current overload, poor contact of a connector, overhigh ambient temperature or short circuit of high-voltage component equipment and the like exist, so that the temperature of a high-voltage electric connector and a wire harness is overhigh; when the electric automobile is charged at high power, the temperature of the high-voltage electric connector and the wire harness is too high, so that the connector is damaged and ablated, the insulation fault of the whole automobile is caused, and a fire disaster is caused in serious cases.

The high-voltage electric connector is used as a main part for transferring kinetic energy of a new energy vehicle and plays an important role in driving safety. However, in the driving process, since there is no data interaction between the high-voltage electrical connector and the vehicle controller, the vehicle controller does not know the current-carrying state of the high-voltage electrical connector when the vehicle is working. When the high-voltage electric connector works under high voltage, the current voltage is higher, which can cause the temperature at the terminal position of the connector to rise; under different road conditions and working conditions, the working current at the connector has no specific parameter value; and under the plug and socket join in marriage the state of inserting, the terminal of connector is in relative confined space, and the heat that heavy current and high voltage produced is difficult to spread, easily causes the inside high temperature, is in this state for a long time easily to cause trouble and fire incident. A part of electric connectors are used as automobile connectors and are connecting devices for connecting the vehicle-mounted control unit, if overcurrent occurs, damage and failure are caused, the work of the vehicle-mounted control unit can be directly influenced, and the risk of damage caused by overcurrent is increased due to the fact that the current condition in a wire harness cannot be known in time, so that the connected control unit cannot normally operate, and the driving safety is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric connector to solve new energy automobile's electric connector and damage because of overflowing easily, influence the technical problem of car security.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides an electric connector, include: the device comprises a conductive mechanism, a connecting device, an insulating shell and a current detection device, wherein the current detection device comprises a current sensor and a signal connecting device; the conductive mechanism is arranged in the insulating shell, and part of the connecting device is positioned in the insulating shell and is electrically connected with the conductive mechanism; the current detection device is arranged on the insulating shell, and the signal connection device is electrically connected with the current sensor to transmit a detection signal of the current sensor.

In a preferred embodiment, the current sensor comprises a plurality of inductive rods arranged side by side at intervals, the inductive rods extending in the circumferential direction of the connecting device.

In a preferred embodiment, the sensing rod comprises a first sensing section and a second sensing section which are arranged at an angle, and the connecting device is arranged at the inner side of the first sensing section and the second sensing section.

In a preferred embodiment, the current detection device includes a circuit board, and the current sensor and the signal connection device are electrically connected to the circuit board, respectively.

In a preferred embodiment, the outer wall of the insulating shell is provided with at least one snap for fixing the circuit board.

In a preferred embodiment, the buckle includes a buckle vertical plate and a press-connecting block, the press-connecting block is fixedly connected to the top of the buckle vertical plate, the top surface of the press-connecting block is a guide surface, and the guide surface is inclined inwards along a direction from the top to the bottom.

In a preferred embodiment, the insulation shell is provided with a limit bump, and the circuit board abuts against the limit bump.

In a preferred embodiment, a plurality of the buckles are distributed in a rectangular shape, and the limiting convex blocks are distributed on the front side and the rear side of the circuit board.

In a preferred embodiment, the electrical connector includes a plurality of the connecting devices, the circuit board is mounted between two adjacent connecting devices, two current sensors connected to the circuit board correspond to the two connecting devices one to one, and the two current sensors are symmetrically arranged.

In a preferred embodiment, a shield connecting ring is provided outside the insulating case, the connecting device passes through the shield connecting ring, and a shield layer of the connecting device is electrically connected to the shield connecting ring.

In a preferred embodiment, a potting body is arranged outside the insulating shell, and the current detection device is at least partially wrapped by the potting body.

The utility model discloses a characteristics and advantage are:

in the electric connector, the current in the wire harness is monitored through the current sensor, and then the temperature rise and the performance of the wire harness are monitored. The electric connector can be applied to new energy automobiles, current monitoring feedback is realized, warning signals can be conveniently and timely sent out, intelligent matching self-adaptive control of the power of the whole automobile is carried out, the risk of damage caused by overcurrent is reduced, normal operation of a control unit connected with the electric connector is guaranteed, and the safety performance of the automobile is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

Fig. 1-4 are schematic structural views of an electrical connector provided by the present invention;

fig. 5 is a schematic connection diagram of a connection device and a current detection device in the electrical connector according to the present invention;

fig. 6 is a schematic structural diagram of an insulating shell in the electrical connector provided by the present invention;

fig. 7 is a partial enlarged view of a portion a in fig. 5;

fig. 8 is a partial enlarged view at B in fig. 6;

fig. 9-10 are schematic structural views of other embodiments of the electrical connector provided by the present invention;

fig. 11-12 are schematic diagrams illustrating an assembly of the electrical connector and the electrical connecting device provided by the present invention.

The reference numbers illustrate:

11. a conductive mechanism; 12. a connecting device;

20. an insulating case; 201. a harness tube;

21. buckling; 211. buckling a vertical plate; 212. a crimping block; 213. a guide surface;

22. a limiting bump; 23. a support plate;

30. a current detection device;

31. a current sensor; 32. an induction rod; 321. a first induction section; 322. a second induction section;

33. a circuit board; 34. a signal connection device;

41. a shielding connecting ring; 42. a potting body; 43. a tail shell; 44. a wiring harness tail clamp;

50. an electrical connection device; 51. a locking mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an electric connector, as shown in fig. 1-10, this electric connector includes: the device comprises a conductive mechanism 11, a connecting device 12, an insulating shell 20 and a current detection device 30, wherein the current detection device 30 comprises a current sensor 31 and a signal connecting device 34; the conductive mechanism 11 is arranged in the insulating shell 20, and part of the connecting device 12 is positioned in the insulating shell 20 and electrically connected with the conductive mechanism 11; the current detection device 30 is mounted on the insulation case 20, and the signal connection device 34 is electrically connected with the current sensor 31 to transmit a detection signal of the current sensor 31.

In the electric connector, the current sensor 31 monitors the current in the wire harness, and further monitors the temperature rise and the performance of the wire harness. The electric connector can be applied to new energy automobiles, current monitoring feedback is realized, warning signals can be conveniently and timely sent out, intelligent matching self-adaptive control of the power of the whole automobile is carried out, the risk of damage caused by overcurrent is reduced, normal operation of a control unit connected with the electric connector is guaranteed, and the safety performance of the automobile is improved. Specifically, the conductive mechanism 11 may be a connector terminal, and the signal connection device 34 may be a signal harness.

The current sensor 31 can measure the current signal in the connecting device 12 in real time and feed back the current signal to the BMS body control system by performing an operation according to the electromagnetic gradient difference. The arrangement and number of the current sensors 31 may be various. In some embodiments, as shown in fig. 5 and 7, the current sensor 31 includes a plurality of sensing bars 32 arranged side by side at intervals, the sensing bars 32 extending along the circumference of the connecting device 12. Preferably, the current sensor 31 comprises two inductive bars 32, the two inductive bars 32 being arranged on the current transmission path of the connection device 12 in parallel with the external magnetic field of the connection device 12.

Further, the inductive rod 32 includes the first inductive section 321 and the second inductive section 322 that are the angular layout, and connecting device 12 arranges in the inboard of first inductive section 321 and second inductive section 322, and first inductive section 321 and second inductive section 322 surround the local scope of connecting device 12 circumference, are convenient for detect the electric current wherein, have improved current monitoring's accuracy, have broad measuring range and reliable precision.

As shown in fig. 4 and 5, the current detection device 30 includes a circuit board 33, the current sensor 31 and the signal connection device 34 are electrically connected to the circuit board 33, and the signal connection device 34 can supply power to the circuit board 33 and the current sensor 31 and perform data transmission. The current sensor 31 may be integrated on the circuit board 33, the circuit board 33 integrating the current collection function. The circuit board 33 is connected with an external control device through a signal connection device 34, and can realize the current real-time monitoring and warning functions. The current sensor 31 may be a TMR current sensor, for example, a TMR7302 current sensor available from multidimensional technologies.

The mounting structure of the circuit board 33 may be various. In some embodiments, the outer wall of the insulating case 20 is provided with at least one catch 21 for fixing the circuit board 33. Further, the insulation shell 20 is provided with a limiting bump 22, the circuit board 33 abuts against the limiting bump 22, the buckle 21 can limit the circuit board 33 to be separated, and the limiting bump 22 can lock the longitudinal position of the circuit board 33. As shown in fig. 4-6, the plurality of clips 21 are distributed in a rectangular shape, the limiting protrusions 22 are distributed on the front side and the rear side of the circuit board 33, and the clips 21 are matched with the limiting protrusions 22, so that the stability of the position of the circuit board 33 is improved, and the reliable work of the electric connector is guaranteed.

Further, the buckle 21 includes a buckle vertical plate 211 and a press-fit block 212, the press-fit block 212 is fixedly connected to the top of the buckle vertical plate 211, the top surface of the press-fit block 212 is a guide surface 213, and the guide surface 213 is inclined inward along the direction from the top to the bottom, as shown in fig. 6 and 8, when assembling, the circuit board 33 is firstly abutted against the guide surface 213, and the circuit board 33 is pressed downward, so that the buckle vertical plate 211 can be driven to deform outward; after the circuit board 33 crosses the crimping block 212, the buckling vertical plate 211 rebounds, and the crimping block 212 compresses the circuit board 33, so that the structural stability of the circuit board 33 is guaranteed, the installation is facilitated, and the assembly efficiency is improved.

In the electrical connector, the number of the connecting means 12 may be one or more. In an embodiment, the electrical connector may include a plurality of connecting devices 12, the circuit board 33 is installed between two adjacent connecting devices 12, the two current sensors 31 connected to the circuit board 33 respectively correspond to the two connecting devices 12 one by one, and the two current sensors 31 are symmetrically arranged. Further, the insulating housing 20 is provided with a plurality of harness tubes 201, as shown in fig. 6, the connecting device 12 is inserted into the harness tubes 201, a support plate 23 is provided between two adjacent harness tubes 201, the circuit board 33 is mounted on the support plate 23, and the current sensor 31 is arranged along the outer wall of the harness tubes 201.

As shown in fig. 1 and 2, a shield connection ring 41 is provided outside the insulating case 20, and the connection device 12 passes through the shield connection ring 41. Specifically, the wire core of the connection device 12 is inserted into the wire harness tube 201, and the shielding layer of the connection device 12 is sleeved outside the wire harness tube 201; the shielding connection ring 41 is sleeved outside the cable harness tube 201, the shielding layer of the connection device 12 is located between the outer wall of the cable harness tube 201 and the shielding connection ring 41, and the shielding layer of the connection device 12 is electrically connected to the shielding connection ring 41. The conductive mechanism 11, the current sensor 31 and the shield connection ring 41 are distributed in sequence.

In some embodiments, the potting body 42 is disposed outside the insulating casing 20, the current detection device 30 is at least partially wrapped by the potting body 42, and the circuit board 33, the current sensor 31 and the insulating casing 20 are encapsulated by the potting body 42, so that the structural stability is improved, and the environmental EMC performance of the sensor is ensured. Specifically, the potting body 42 may be formed by pouring a potting adhesive through a mold, and the current detection device 30 may be completely wrapped by the potting body 42, that is, the current detection device 30 is fixed in the potting body 42. As shown in fig. 1, 9 and 10, a tail housing 43 and a harness tail 44 are connected to a rear end of the electrical connector, and a potting body 42 is formed between the tail housing 43 and the insulating housing 20. The electrical connector may also include a housing with a potting body 42 located within the housing.

Connecting device 12 can adopt copper wire or aluminium wire, adopts under the condition of aluminium wire, can reduce manufacturing cost and increase duration, considers that aluminium is lower than the melting point of copper and resistance is great relatively, and this electric connector is through monitoring operating current at the car operation in-process, and the reliable operation of guarantee circuit structure. The connecting device 12 and the conductive mechanism 11 may be connected by friction welding.

Fig. 11 and 12 show an electrical connection structure using the electrical connector, which includes an electrical connection device 50 adapted to the electrical connector, and a terminal of the electrical connection device 50 is electrically connected to the conductive mechanism 11. The electrical connection device 50 or the insulating housing 20 is provided with a locking mechanism 51 to lock the electrical connector and the electrical connection device 50 together. The electric connector is a female socket, and the electric connecting device 50 matched with the electric connector is a male connector; alternatively, the electrical connector is a male connector and the electrical connector 50 is a female connector. The terminal of the electrical connection device 50 and the conductive mechanism 11 may be a copper bar high voltage interlock terminal.

The above description is only for a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention according to the disclosure of the present application.

Claims

1. An electrical connector, comprising: the device comprises a conductive mechanism, a connecting device, an insulating shell and a current detection device, wherein the current detection device comprises a current sensor and a signal connecting device; the conductive mechanism is arranged in the insulating shell, and part of the connecting device is positioned in the insulating shell and is electrically connected with the conductive mechanism; the current detection device is arranged on the insulating shell, and the signal connection device is electrically connected with the current sensor to transmit a detection signal of the current sensor.

2. The electrical connector of claim 1, wherein the current sensor comprises a plurality of inductive bars arranged side by side in a spaced apart arrangement, the inductive bars extending in a circumferential direction of the connecting device.

3. The electrical connector of claim 2, wherein the inductive lever comprises first and second angularly disposed inductive sections, the connecting means being disposed inside the first and second inductive sections.

4. The electrical connector of claim 1, wherein the current detection device comprises a circuit board, and the current sensor and the signal connection device are electrically connected to the circuit board, respectively.

5. The electrical connector of claim 4, wherein the outer wall of the insulative housing is provided with at least one catch for securing the circuit board.

6. The electrical connector of claim 5, wherein the latch comprises a vertical latch plate and a pressing block, the pressing block is fixedly connected to a top of the vertical latch plate, a top surface of the pressing block is a guiding surface, and the guiding surface is inclined inward along a direction from the top to the bottom.

7. The electrical connector of claim 5, wherein the insulative housing is provided with a limit bump, and the circuit board abuts against the limit bump.

8. The electrical connector of claim 7, wherein the plurality of clips are arranged in a rectangular shape, and the limiting protrusions are arranged on the front side and the rear side of the circuit board.

9. The electrical connector according to claim 4, wherein the electrical connector comprises a plurality of the connecting devices, the circuit board is mounted between two adjacent connecting devices, two current sensors connected with the circuit board correspond to the two connecting devices one by one, and the two current sensors are arranged symmetrically.

10. The electrical connector of claim 1, wherein a shield connecting ring is provided outside the insulating housing, the connecting device passes through the shield connecting ring, and a shield layer of the connecting device is electrically connected with the shield connecting ring.

11. The electrical connector of claim 1, wherein a potting body is provided outside the insulative housing, the current sensing device being at least partially encapsulated by the potting body.