Double-row high-voltage plug-in connector

Abstract

The utility model provides a double-row high-voltage plug-in connector, which relates to the technical field of high-voltage plug-ins and comprises a plug-in body for high-voltage transmission, the plug-in body comprises a plastic sheath, an external connecting sheet and a copper bar, and the external connecting sheet and the copper bar are mounted on the plastic sheath. One end, far away from the plastic sheath, of the copper bar is provided with a diverter and a connecting plug-in installed at the diverter, and an outer pin of the connecting plug-in is electrically connected with a temperature sensing piece; the connecting plug-in comprises an electrical interface installed at the shunt position of the shunt, the shunt with the temperature detection function is integrated, temperature detection of the shunt position is achieved through pins and a temperature sensing piece outside the connecting plug-in, an independent interface does not need to be additionally arranged for the temperature sensing piece, the space occupied by the interface is reduced, and the temperature detection efficiency is improved. The complexity of design layout and the space utilization rate are reduced, and the situation that too many interfaces cause confusion or misoperation during maintenance, and the difficulty and risk of maintenance are increased is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage plug-ins, in particular to a double-row high-voltage plug-in connection device. Background Art

[0002] A double-row high-voltage plug-in connector is a device used to connect high-voltage cables and equipment. It usually consists of two rows of sockets, each of which can be plugged with a high-voltage plug. This connector is usually used in industrial fields or power systems to connect high-voltage cables and equipment to ensure stable and reliable power transmission. Double-row high-voltage plug-in connectors usually have waterproof, dustproof, explosion-proof and other characteristics, and can work normally in harsh environments.

[0003] At present, high-voltage plug-ins use temperature sensors to sense temperature. Common sensor types include thermistors (PTC or NTC), thermocouples, thermistor capacitors, etc., among which thermistors and thermocouples are more common choices. Sensors are usually attached to key parts of plug-ins or equipment for temperature monitoring. In order to make it easier for maintenance personnel to identify and connect temperature sensors and facilitate temperature monitoring and maintenance of plug-ins, a separate interface is usually set for temperature detection. However, in the above-mentioned attachment operation, since temperature detection often uses a separate interface, the additional interface will occupy the space of the plug-in, resulting in the complexity of the design layout and the decrease of space utilization. Too many interfaces will lead to confusion or misoperation during maintenance, increasing the difficulty and risk of maintenance. Utility Model Content

[0004] In order to solve the above technical problems, the utility model uses the pins and temperature sensing components outside the connection plug-in to realize the temperature detection at the shunt. The specific technical solution is as follows:

[0005] A double-row high-voltage plug-in connection device comprises a plug-in body for high-voltage transmission, the plug-in body comprising a plastic sheath, an external connecting piece installed on the plastic sheath and a copper busbar, a shunt and a connecting plug-in installed at the shunt are arranged at one end of the copper busbar away from the plastic sheath, and the external pins of the connecting plug-in are electrically connected to a temperature sensing component.

[0006] The above-mentioned temperature sensor is welded on the pins outside the connecting plug-in, and there is no need to set up a separate interface for the temperature sensor, which reduces the space required for interface design, reduces the complexity and space utilization of the temperature collection part, and at the same time, the temperature sensor is set at the corresponding diverter, and there is no need to attach the temperature sensor to the diverter again to ensure the fixed position of the temperature sensor, which is convenient for real-time detection of the temperature at the diverter through the temperature sensor.

[0007] Preferably, the shunt includes a Y-shaped connector, one end of the connector bifurcated is mounted on the plastic sheath, and the other end of the connector is provided with a resistor at the connector plug. One end of the connector can be fixed to the battery, and the resistor is provided to facilitate the shunt of the non-bifurcated end of the connector, and to fix the shunt to the connector plug, so as to facilitate the combination of the shunt and the temperature sensing element for integrated use.

[0008] Preferably, a weld is provided at the junction of the resistor and the connector, wherein the provision of the weld can effectively reduce the resistance value of the connector flowing through the resistor and reduce heat generation.

[0009] Preferably, the connection plug-in includes an electrical interface installed at the diversion location of the diverter, and the temperature sensing component is located on the electrical interface and is electrically connected to the pins leaking from the outside of the electrical interface. The temperature sensing component is electrically connected to the pins of the electrical interface through the wiring of the PCBA, and the electrical interface is welded on the PCBA, which facilitates the PCBA to be fixed to the temperature sensing component through the wiring, and also serves as a limit for the temperature sensing component.

[0010] Preferably, the electrical interface is provided with a thermal conductive adhesive at the temperature sensing element, wherein the temperature sensing element transfers temperature through the thermal conductive adhesive, so that the collected temperature is more accurate, and the sensitivity of the temperature sensing element to the temperature detection at the diverter is improved.

[0011] Preferably, the plug-in body further comprises a protective cover fixed to the plastic sheath and partially covering the external connecting piece and the copper busbar, wherein the protective cover is used to play an insulating and protective role, and the sealing ring plays a protective role on the plug-in body.

[0012] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0013] The utility model provides a connection plug-in, which includes an electrical interface installed at the shunt of the shunt, and integrates a shunt with temperature detection. It not only has a current detection function, but also a temperature detection function. The temperature detection at the shunt is achieved through pins and a temperature sensing element outside the connection plug-in. There is no need to set a separate interface for the temperature sensing element, which reduces the space occupied by the interface, reduces the complexity of the design layout and the space utilization rate, and also improves the integration of the device and the safety of the battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0016] Figure 3 It is a structural schematic diagram of the connection plug-in of the utility model.

[0017] In the figure: 10, plug-in body; 101, plastic sheath; 102, mounting hole; 103, shielding sheet; 104, sealing ring; 105, protective cover; 20, external sheet; 30, interlocking plug-in; 40, connecting plug-in; 401, electrical interface; 402, temperature sensing component; 403, thermal conductive adhesive; 50, copper busbar; 501, connecting piece; 502, resistor body. DETAILED DESCRIPTION

[0018] The following is a detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. Before describing in detail the technical solutions of each embodiment of the present invention, the nouns and terms involved are explained. In this specification, components with the same name or the same number represent similar or identical structures and are only for illustrative purposes.

[0019] like Figure 1-Figure 3 As shown, a double-row high-voltage plug-in connection device includes a plug-in body 10 for high-voltage transmission, the plug-in body 10 includes a plastic sheath 101, an external connecting piece 20 installed on the plastic sheath 101, and a copper bar 50, the copper bar 50 is provided with a shunt at one end away from the plastic sheath 101 and a connecting plug-in 40 installed at the shunt, and the external pins of the connecting plug-in 40 are electrically connected to a temperature sensing part 402, wherein the plastic sheath 101 is made of thermoplastic engineering plastic, which has strong environmental adaptability, reliable mechanical strength, low price, and plastic The material sheath 101 provides insulation performance, the external plate 20 and the copper bus 50 are used to connect with the terminals of the battery, one end of which can be welded or riveted by a nut or a stud, and the temperature sensing element 402 is used to detect the temperature at the shunt, and the detected value is transmitted as a signal through the connecting plug-in 40. The temperature detection at the shunt is achieved only through a pin on the outside of the connecting plug-in 40 and the temperature sensing element 402, and there is no need to set a separate interface for the temperature sensing element 402, which reduces the space occupied by the interface and reduces the complexity of the design layout and the space utilization rate.

[0020] like Figure 1 and Figure 3 As shown, the shunt includes a Y-shaped connector 501, one end of the connector 501 is installed on the plastic sheath 101, and the other end of the connector 501 is located at the connecting plug 40. A resistor 502 is provided, and a weld is provided at the junction of the resistor 502 and the connector 501, wherein the setting of the weld can effectively reduce the resistance value of the connector 501 flowing through the resistor 502. The connector 501 is preferably made of copper, and the resistor 502 is preferably made of manganese-copper alloy.

[0021] like Figure 1 and Figure 3As shown, the connecting plug-in 40 includes an electrical interface 401 installed at the shunt of the shunt, and the temperature sensing component 402 is located on the electrical interface 401 and is electrically connected to the pins leaking from the outside of the electrical interface 401, wherein the electrical interface 401 is connected to the BMS, and a PCBA is arranged between the electrical interface 401 and the resistor 502, and the pins leaking from the outside of the electrical interface 401 are all welded on the PCBA, and at the same time, the temperature sensing component 402 is electrically connected to the pins of the electrical interface 401 through the routing of the PCBA. Preferably, the temperature sensing component 402 adopts a patch method, and the temperature sensing component 402 can adopt a temperature sensor, a temperature probe and a thermistor.

[0022] like Figure 1 and Figure 3 As shown, the electrical interface 401 is located at the temperature sensing element 402 and is provided with a thermal conductive adhesive 403. When the diverter is working, the temperature sensing element 402 transfers temperature through the thermal conductive adhesive 403, making the collected temperature more accurate and improving the sensitivity of the temperature sensing element 402 to the temperature detection at the diverter.

[0023] like Figure 1 As shown, the plug-in body 10 also includes a protective cover 105 fixed to the plastic sheath 101 and partially wrapping the external connecting piece 20 and the copper bus 50. The plastic sheath 101 is located on the same side of the shunt and a sealing ring 104 is installed outside the protective cover 105, wherein the protective cover 105 is used to play an insulating protection role, and the sealing ring 104 plays a protective role for the plug-in body 10.

[0024] like Figure 1 As shown, a shielding sheet 103 is installed at the junction of the protective cover 105 and the plastic sheath 101. The shielding sheet 103 prevents the entry of external electromagnetic interference signals and protects the internal circuit of the connector from interference. The shielding sheet 103 can be a press-fit type or a top-pressure spring sheet type. The press-fit type is preferred. This structure is more conducive to the shielding function, and is also more conducive to installation and has better reliability.

[0025] The plastic sheath 101 is also provided with mounting holes 102 around it, which can provide additional support and protection, reduce the impact of external vibration or impact, and extend the service life of the plug-in body 10. An interlocking plug-in 30 is also provided on the side of the plastic sheath 101 facing the diverter. The same interlocking function can meet the use of two circuit functions, that is, the use of a double-row high-voltage plug-in in this application reduces costs.

[0026] The double-row high-voltage plug-in connection design adopts an independent charging and discharging circuit design, so that the charging and discharging processes can be carried out separately to meet the use in different situations, and can achieve charging and discharging at the same port without interfering with each other.

[0027] When the BMS detects that the temperature of the temperature-sensing component 402 exceeds the maximum temperature that the device can withstand, the BMS reports a high temperature fault and sends a power reduction request to the VCU (the core electronic control unit of the vehicle control decision). After receiving the instruction, the VCU sends a power reduction instruction to the MCU, and the MCU executes the power reduction, thereby reducing the device temperature and ensuring the safety of the battery. The integrated shunt with temperature detection not only has a current detection function, but also a temperature detection function. When the temperature is too high, the power can be appropriately reduced to alleviate the problem of excessive temperature to ensure the safety of the battery system.

[0028] The above-described embodiments are merely descriptions of preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A double-row high-voltage plug-in connection device, comprising a plug-in body (10) for high-voltage transmission, characterized in that: The plug-in body (10) comprises a plastic sheath (101), an external connecting piece (20) installed on the plastic sheath (101), and a copper busbar (50); a shunt is provided at one end of the copper busbar (50) away from the plastic sheath (101), and a connecting plug-in (40) is installed at the shunt; an external pin of the connecting plug-in (40) is electrically connected to a temperature sensing element (402).

2. The double-row high-voltage plug-in connection device according to claim 1, characterized in that: The shunt comprises a Y-shaped connecting piece (501), one forked end of the connecting piece (501) is mounted on the plastic sheath (101), and a resistor (502) is arranged at the other end of the connecting piece (501) and located at the connecting plug-in (40).

3. The double-row high-voltage plug-in connection device according to claim 2, characterized in that: A welding seam is provided at the junction of the resistor (502) and the connecting member (501).

4. The double-row high-voltage plug-in connection device according to claim 1, characterized in that: The connecting plug-in (40) comprises an electrical interface (401) installed at the diversion position of the diverter, and the temperature sensing element (402) is located on the electrical interface (401) and is electrically connected to the pins leaking out of the electrical interface (401).

5. The double-row high-voltage plug-in connection device according to claim 4, characterized in that: The electrical interface (401) is located at the temperature sensing component (402) and is provided with a heat-conducting adhesive (403).

6. The double-row high-voltage plug-in connection device according to claim 1, characterized in that: The plug-in body (10) further comprises a protective cover (105) which is fixed to the plastic sheath (101) and partially covers the external connecting piece (20) and the copper busbar (50).

7. The double-row high-voltage plug-in connection device according to claim 6, characterized in that: The plastic sheath (101) is located on the same side of the diverter and is outside the protective cover (105) and a sealing ring (104) is installed.

8. The double-row high-voltage plug-in connection device according to claim 6, characterized in that: A shielding sheet (103) is installed at the junction of the protective cover (105) and the plastic sheath (101).

9. The double-row high-voltage plug-in connection device according to claim 1, characterized in that: The plastic sheath (101) is provided with mounting holes (102) around its periphery.

10. The double-row high-voltage plug-in connection device according to claim 1, characterized in that: An interlocking plug-in unit (30) is also provided on the side of the plastic sheath (101) facing the diverter.

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