WO2024061324A1

WO2024061324A1 - Electrical connector and electrical connection structure

Info

Publication number: WO2024061324A1
Application number: PCT/CN2023/120456
Authority: WO
Inventors: 王超
Original assignee: 长春捷翼汽车科技股份有限公司
Priority date: 2022-09-21
Filing date: 2023-09-21
Publication date: 2024-03-28
Also published as: CN218351858U

Abstract

Provided in the present invention are an electrical connector and an electrical connection structure. The electrical connector comprises: a conductive mechanism, a connection apparatus, an insulation shell and a voltage sensor, wherein the conductive mechanism is at least partially arranged in the insulation shell; the connection apparatus is at least partially electrically connected to the conductive mechanism; and the voltage sensor is installed in the insulation shell and is used for measuring the voltage of the conductive mechanism. The technical problem of hazards easily occurring due to there being a relatively high residual voltage in a wire harness during the maintenance of a new energy vehicle is solved.

Description

Electrical connectors and electrical connection structures

Related applications

This application claims priority to the Chinese utility model patent with patent application number 202222507666.9, application date September 21, 2022, and invention name “Electrical connector and electrical connection structure”.

Technical field

The invention relates to the technical field of new energy vehicles, in particular to an electrical connector and an electrical connection structure.

Background technique

With the development of the new energy automobile field, high-voltage electrical connectors are increasingly used in automobiles. High-voltage electrical connectors are of relatively high importance as a component that withstands high voltages in electric energy transmission and connects the wire harness end and the electrical appliance end to realize the power transmission function. At present, the selection of high-voltage electrical connectors is mainly based on the evaluation of working conditions and calculation of current carrying capacity, and whether the high-voltage electrical connector is damaged is used to determine whether the selection is appropriate. However, if the model is improperly selected or an emergency occurs while driving, the high-voltage electrical connector will sometimes fail, which will have a serious impact on the high-voltage system of the car. In the worst cases, the entire vehicle will be insulated and alarmed. In serious cases, there is a risk of burning the vehicle. . In addition, after the maintenance switch of a new energy vehicle is unplugged during maintenance, there will still be a high residual current voltage in the wiring harness. If not handled properly, it will cause greater danger to the operator.

Contents of the invention

The purpose of the present invention is to provide an electrical connector and an electrical connection structure to solve the technical problem of high residual current voltage in the wiring harness during maintenance of new energy vehicles, which can easily cause danger.

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

The invention provides an electrical connector, which includes: a conductive mechanism, a connecting device, an insulating shell and a voltage sensor. The conductive mechanism is at least partially disposed in the insulating shell. The connecting device and the conductive mechanism are at least partially electrically connected. Connection; the voltage sensor is installed in the insulating shell and used to measure the voltage of the conductive mechanism.

The present invention provides an electrical connection structure, which includes: the above-mentioned electrical connector; an electrical connection device adapted to the electrical connector, and the terminals of the electrical connection device are electrically connected to the conductive mechanism.

The characteristics and advantages of the present invention are:

In this electrical connector, the voltage sensor can detect the residual voltage of the conductive mechanism and the connecting device, and the voltage sensor transmits the detection signal to the outside. This electrical connector can be used in new energy vehicles. During maintenance, the residual voltage in the circuit can be known in advance, serving as a safety protection reminder to avoid danger caused by residual voltage. This electrical connector can be used in the vehicle research and development process. As an experimental connector, the electrical connector can be installed on the vehicle under development to facilitate the acquisition of voltage and current parameters between each module in the development of vehicle electronic control.

Description of drawings

The following drawings are only intended to schematically illustrate and explain the present invention and do not limit the scope of the present invention. in:

Figure 1 is a schematic structural diagram of an embodiment of an electrical connector provided by the present invention;

Figure 2 is a schematic structural diagram of the insulating shell in the electrical connector provided by the present invention;

Figure 3 is a schematic connection diagram of the connection device, voltage sensor and display device in the electrical connector provided by the present invention;

Figure 4 is a partial enlarged view of position A in Figure 1;

5-6 are schematic structural diagrams of the display device in the electrical connector provided by the present invention;

7-8 are schematic structural diagrams of another embodiment of the electrical connector provided by the present invention;

Figure 9 is a schematic structural diagram of the electrical connection structure provided by the present invention.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention will now be described with reference to the accompanying drawings. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

Option One

The present invention provides an electrical connector, as shown in Figures 1 to 8. The electrical connector includes: a conductive mechanism 11, a connecting device 12, an insulating shell 20, a voltage sensor 30 and a collection wire harness 31. The conductive mechanism 11 is at least partially Disposed in the insulating shell 20 , the connecting device 12 is at least partially electrically connected to the conductive mechanism 11 ; the voltage sensor 30 is installed in the insulating shell 20 for measuring the voltage of the conductive mechanism 11 , and one end of the collection wire harness 31 is electrically connected to the voltage sensor 30 , the other end of the collection wire harness 31 extends to the outside of the insulating shell 20 .

In the electrical connector, the voltage sensor 30 can detect the residual voltage of the conductive mechanism 11 and the connecting device 12, and the detection signal of the voltage sensor 30 is transmitted to the outside through the collection harness 31. The electrical connector can be applied to new energy vehicles. During maintenance, the residual voltage in the circuit can be known in advance, which plays a role in safety protection and reminder to avoid danger caused by residual current voltage. The electrical connector can be used in the vehicle development process as an experimental connector. To the vehicle under development, it is convenient to obtain the voltage and current parameters between modules in the development of vehicle electronic control.

The voltage sensor 30 can measure voltage and also has a waveform collection function. Through the voltage sensor 30, the voltage and waveform signals in the connection device 12 can be collected to provide a preliminary diagnosis basis for the vehicle electronic control working status and fault maintenance diagnosis. Specifically, the voltage sensor 30 is a package structure in which the waveform acquisition and measurement module and the voltage sensing module are integrated; the electrical connector includes a communication module for transmitting the detection signal voltage sensor to the vehicle control system, which can provide parameters for vehicle system control. Input provides feedback parameters for body closed-loop control, which contributes to the intelligentization and digitization of maintenance and vehicle control. The voltage sensor 30 is close to the conductive mechanism 11 , and the outside of the voltage sensor 30 is covered with a high-voltage resistant thermally conductive insulating material, such as alumina. The voltage sensor 30 and the collection wire harness 31 have an insulating shielding structure.

The connecting device 12 in the electrical connector may use copper wires or aluminum wires. When the connecting device 12 is an aluminum wire, it is beneficial to reduce the weight of the vehicle and reduce the cost; considering that the heat dissipation of aluminum wires is slower than that of copper wires, using this electrical connector can monitor its voltage status in real time and realize an intelligent closed loop. Control, so as to understand the working status in time and avoid failures caused by excessive temperature. Specifically, the conductive mechanism 11 may be a connector terminal, and the connector terminal may be entirely located in the space surrounded by the insulating shell 20 , or may partially extend outside the insulating shell 20 .

The voltage sensor 30 can be an infrared induction collection sensor or a voltage magnetic collector sensor. Both the voltage magnetic collector sensor and the infrared induction collection sensor have voltage collection functions. The voltage sensor 30 cooperates with the connecting device 12 or the conductive mechanism 11 in a coupling manner, and the voltage sensor 30 can use the voltage transformer principle to collect voltage. Preferably, the voltage sensor 30 adopts an infrared induction collection sensor. The infrared induction collection sensor transmits the collection variables to the voltage calculation module and converts them into voltages. The voltage and timing curve form a waveform, and the voltage waveform signal is displayed through the microprocessor, which is contactless. , anti-interference and high-precision characteristics. The microprocessor can be STM32. Infrared induction collection sensors belong to the existing technology, and a suitable model of infrared induction collection sensor can be selected as the voltage sensor 30 .

As shown in Figures 1 and 2, the electrical connector includes a corresponding connecting device 12 and a conductive mechanism 11; the insulating shell 20 is provided with a longitudinally penetrating terminal receiving cavity 21, and the conductive mechanism 11 and the voltage sensor 30 are both provided on the terminal. In the accommodating cavity 21, the conductive mechanism 11 and the terminal accommodating cavity 21 can be fixedly connected by snapping or screwing. Further, the terminal receiving cavity 21 has a top wall 211, a bottom wall 212, an inner wall 214 and an outer wall 213. The inner wall 214 and the outer wall 213 are opposite to each other and are connected to the top wall 211 and the bottom wall 212 respectively. The number of conductive mechanisms 11 may be 2, 3, or 4; correspondingly, the number of terminal receiving cavities 21 may also be 2, 3, or 4, etc. The voltage sensor 30 and the conductive mechanism 11 are both disposed in corresponding terminal receiving cavities 21 . A plurality of terminal receiving cavities 21 are distributed laterally. When the insulating shell 20 is provided with two terminal accommodating cavities 21 , as shown in FIG. 2 , the side where the two terminal accommodating cavities 21 are close to each other is the inner side, that is, the inner side walls 214 of the two terminal accommodating cavities 21 are close to each other.

Further, the inner wall 214 is provided with a wire clamping slot 215. One end of the collection wire harness 31 extends into the terminal accommodation cavity 21 and is connected to the voltage sensor 30. The other end of the collection wire harness 31 extends to the outside of the insulating shell 20 through the wire clamping slot 215. As shown in FIGS. 1 to 4 , the wire slot 215 provides a passage for the collection wire harness 31 extending from the inside of the terminal accommodation cavity 21 to the outside of the terminal accommodation cavity 21 , and plays a positioning role in positioning the collection wire harness 31 so that the electrical connector The structure is more stable.

In some embodiments, a support base 22 is provided on the inner side of the bottom wall 212, and the voltage sensor 30 is installed on the support base 22. As shown in Figures 1 and 2, the support base 22 provides support and positioning for the voltage sensor 30, so that the voltage sensor 30 can The position of the sensor 30 is more stable, ensuring that the voltage sensor 30 and the conductive mechanism 11 cooperate more reliably, thereby improving the reliability and accuracy of the detection results.

The inventor has made further improvements to the electrical connector: the electrical connector includes a display device 40. The collection wire harness 31 is electrically connected to the display device 40. The detection signal of the voltage sensor 30 is transmitted to the display device 40 through the collection wire harness 31. The display device 40 can be used to display voltage information and waveform information, which is more intuitive. This electrical connector facilitates visual inspection during the research and development process and provides safety reminders for live maintenance and debugging of new energy vehicles.

Preferably, the display device 40 is equipped with a sensor switch, and the display will only light up after being touched, thereby reducing power consumption. As shown in FIGS. 5 and 6 , the display device 40 is provided with an indicator light 41 and a connection terminal 42 , and the collection wire harness 31 is connected to the connection terminal 42 . The display device 40 integrates a current and voltage display calculation PCB circuit. Specifically, the modbus signal transmission protocol can be optionally configured.

As shown in Figures 7 and 8, the electrical connector includes a connector shell 51. The insulating shell 20 is disposed in the connector shell 51. The display device 40 is fixed to the outer wall of the connector shell 51. The connector shell 51 is opposite to the insulating shell. 20, the conductive mechanism 11 and the voltage sensor 30 play a protective role. The outer wall of the insulating shell 20 is provided with buckles 24 , and the insulation shell 20 is fixedly connected to the connector shell 51 through the buckles 24 . The outer wall of the connector housing 51 is provided with a mounting slot 511, and the display device 40 is installed in the mounting slot 511. As shown in Figures 5 and 9, the display device 40 is provided with a limiting rod 43; the installation groove 511 has a limiting portion that matches the limiting rod 43, and the limiting rod 43 is engaged with the limiting portion to secure the display device. 40 is locked in the mounting slot 511. Preferably, the display device 40 is provided with four limiting rods 43 .

Further, a channel 23 is provided on the top of the insulating shell 20, and the collection wire harness 31 includes a horizontal part 311 and a vertical part 312. As shown in Figures 2-4, both the horizontal part 311 and the vertical part 312 are at least partially located in the channel 23. , the vertical part 312 extends outside the connector housing 51 and is electrically connected to the display device 40 , the horizontal part 311 and the vertical part 312 can be arranged at 90 degrees, and the collection wire harness 31 is turned in the channel 23 to facilitate the arrangement of the collection wire harness 31 during assembly. , improving the assembly efficiency of the connector; at the same time, by setting the channel 23, the weight of the insulating shell 20 and the electrical connector can be reduced, and the amount of material used can be reduced while ensuring strength.

In some embodiments, the electrical connector includes a connector tail housing 52 connected to the connector The rear end of the shell 51; the connector tail shell 52 is provided with a wire harness hole 521 for passing the connecting device 12. The connecting device 12 extends into the connector shell 51 through the wire harness hole 521, and further extends into the insulating shell 20 and the conductive mechanism. 11 is fixedly connected, and the connector tail shell 52 plays a role in positioning and protecting the connecting device 12 .

Option II

The present invention provides an electrical connection structure. As shown in Figure 9, the electrical connection structure provided by the present invention includes: the above-mentioned electrical connector and an electrical connection device 60 adapted to the electrical connector. The terminals are electrically connected to the conductive mechanism 11 . This electrical connection structure has all the technical features and technical effects of the above-mentioned electrical connector, which will not be described again here.

The electrical connecting device 60 or the connector housing 51 is provided with a locking mechanism 61 to lock the electrical connector and the electrical connecting device 60 together; the electrical connector or the electrical connecting device 60 is provided with a lock. Specifically, the electrical connector is a female socket and the electrical connection device 60 is a male header; or the electrical connector is a male header and the electrical connection device 60 is a female socket. The terminals and conductive mechanism 11 of the electrical connection device 60 may be copper bar high-voltage interlock terminals.

The above descriptions are only illustrative embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

An electrical connector, which includes: a conductive mechanism, a connecting device, an insulating shell and a voltage sensor. The conductive mechanism is at least partially disposed in the insulating shell. The connecting device is at least partially electrically connected to the conductive mechanism. ; The voltage sensor is installed in the insulating shell and used to measure the voltage of the conductive mechanism.
The electrical connector according to claim 1, wherein the electrical connector includes a corresponding connecting device and a conductive mechanism; the insulating shell is provided with a longitudinally penetrating terminal receiving cavity, the conductive mechanism and the voltage The sensors are all arranged in the terminal receiving cavity.
The electrical connector of claim 2, wherein the electrical connector includes a collection wire harness, one end of the collection wire harness is electrically connected to the voltage sensor, and the other end of the collection wire harness extends outside the insulating shell. .
The electrical connector according to claim 3, wherein the terminal receiving cavity has a top wall, a bottom wall, an inner wall and an outer wall, and the inner wall and the outer wall are oppositely arranged and connected to the top wall and the outer wall respectively. the bottom wall;

The inner wall is provided with a wire clamping slot. One end of the collection wire harness extends into the terminal accommodation cavity and is connected to the voltage sensor. The other end of the collection wire harness extends to the insulation through the wire clamping slot. outside the shell.
The electrical connector of claim 4, wherein a support base is provided inside the bottom wall, and the voltage sensor is mounted on the support base.
The electrical connector of claim 3, wherein the electrical connector includes a display device, and the collection wire harness is electrically connected to the display device.
The electrical connector of claim 6, wherein the electrical connector includes a connector housing, the insulating housing is disposed inside the connector housing, and the display device is fixed to an outer wall of the connector housing. .
The electrical connector according to claim 7, wherein the display device is provided with a limiting rod; the outer wall of the connector housing is provided with a mounting groove, and the mounting groove has a mounting groove adapted to the limiting rod. Limiting part, the display device is installed in the installation slot.
The electrical connector according to claim 7, wherein a channel is provided on the top of the insulating shell, and the collection wire harness includes a horizontal part and a vertical part, and both the horizontal part and the vertical part are at least partially located on the In the channel, the vertical portion extends outside the connector housing and is electrically connected to the display device.
The electrical connector of claim 7, wherein the electrical connector includes a connector tail housing connected to a rear end of the connector housing; the connector tail housing is provided with a Pass through the wiring harness hole of the connecting device.
An electrical connection structure, which includes:

The electrical connector according to any one of claims 1-10;

An electrical connection device is adapted to the electrical connector, and the terminals of the electrical connection device are electrically connected to the conductive mechanism.