Vehicle-mounted large-current connector

Abstract

The application discloses a vehicle-mounted large-current connector and relates to the technical field of new energy automobile accessory equipment. The shell is closed and hollow inside, and the connecting head is arranged in the shell and penetrates the shell at both ends. One end of the connecting head is used for connecting a cable, and the other end is used for plugging other connectors. A sealing layer is arranged in the shell and surrounds the connecting head. The two ends of the sealing layer along the length direction of the connecting head are connected with the inner wall of the shell and form a sealed cavity. The part of the connecting head inserted into the shell is located in the sealed cavity, and an annular heat dissipation cavity is formed between the shell and the sealing layer. A heat dissipation plate is embedded in one side of the sealing layer in the heat dissipation cavity. A plurality of heat dissipation holes are formed in the bottom surface of the shell. A heat dissipation fan is arranged in the heat dissipation cavity of the shell and is used for accelerating heat dissipation of the heat dissipation plate. The application has the effect of enhancing the heat dissipation function of the connector.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of new energy automobile accessory equipment, and in particular to a vehicle-mounted large-current connector. BACKGROUND

[0002] The vehicle controller in a new energy automobile is a core control component of the entire automobile, and is equivalent to the brain of the automobile. The vehicle controller collects an accelerator pedal signal, a brake pedal signal and other input signals, makes corresponding judgments, controls the actions of lower-level component controllers, and drives the automobile to normally travel. The vehicle controller bridges the blocked or isolated circuits in the circuit, so that the current flows and the circuit realizes the predetermined function.

[0003] In the working process, the vehicle controller of the new energy automobile is connected with other electrical equipment of the automobile through a current connector and a cable. The current connector can bridge the blocked or isolated circuits in the circuit, so that the current flows and the circuit realizes the predetermined function. When the automobile is overhauled, the equipment power supply can be quickly disconnected by disconnecting the current connector, thereby improving the safety of the overhaul.

[0004] In the use process, since the current connector needs to transmit current or signals between devices, the current connector can generate a relatively high temperature in a local part after a long time of work, which can easily reduce the service life of the connector and even burn the connector, thereby causing a short circuit phenomenon. SUMMARY

[0005] In order to improve the situation that the current connector generates a high temperature after a long time of work, thereby reducing the service life of the connector or causing a short circuit, the application provides a vehicle-mounted large-current connector.

[0006] The application provides a vehicle-mounted large-current connector, which adopts the following technical scheme:

[0007] A vehicle-mounted large-current connector comprises

[0008] An outer shell is closed and hollow inside;

[0009] A connecting head is arranged in the outer shell and penetrates the outer shell at both ends, one end of the connecting head is used for connecting a cable, and the other end is used for plugging other connectors;

[0010] A sealing layer is arranged in the outer shell and surrounds the connecting head, both ends of the sealing layer along the length direction of the connecting head are connected with the inner wall of the outer shell and form a sealed cavity, the part of the connecting head inserted into the outer shell is located in the sealed cavity, and an annular heat dissipation cavity is formed between the outer shell and the sealing layer;

[0011] The sealing partition is embedded with a heat dissipation plate on one side inside the heat dissipation cavity. The bottom surface of the outer shell has multiple heat dissipation holes. The outer shell is equipped with a heat dissipation fan inside the heat dissipation cavity. The heat dissipation fan is used to accelerate the heat dissipation of the heat dissipation plate.

[0012] By adopting the above technical solution, the connector is inserted into the sealed cavity formed by the sealing partition and the outer shell. The sealing partition can form a sealed protection for the connector, improving the waterproof and dustproof effect. A heat dissipation plate is embedded on the sealing partition. The heat dissipation plate can absorb the heat generated by the connector when transmitting current, reducing the accumulation of heat in the sealed cavity. At the same time, heat dissipation holes are opened at the bottom of the outer shell. After absorbing heat, the heat dissipation plate can dissipate heat through the heat dissipation holes, thereby reducing the accumulation of heat inside the outer shell.

[0013] Optionally, the heat sink plate is provided with a plurality of heat sink blocks on the side near the connector, and the end of the heat sink block away from the heat sink plate extends inward into the sealing cavity.

[0014] By adopting the above technical solution, one end of the heat dissipation block is connected to the heat dissipation plate, and the other end extends into the sealed cavity. The heat dissipation block can directly extend into the sealed cavity to absorb heat and transfer the heat to the heat dissipation plate, thereby improving the heat transfer effect.

[0015] Optionally, the housing has ventilation holes extending through the side wall of the corresponding cooling fan.

[0016] By adopting the above technical solution, the cooling fan can directly draw in cooler outside air into the cooling cavity through the ventilation holes, blow air onto the heat sink to dissipate heat, improve the heat dissipation efficiency of the heat sink, and at the same time blow the heat out of the outer casing through the ventilation holes.

[0017] Optionally, the outer casing is provided with a heat dissipation pipe in the heat dissipation cavity. The heat dissipation pipe is a Venturi tube structure. The heat dissipation pipe is parallel to the connector and is arranged corresponding to the position of the cooling fan. The heat dissipation pipe includes an inlet section, a constriction section, a throat and a diffuser section in sequence. The inlet section corresponds to the cooling fan. The diffuser section is connected to the external space of the outer casing. The throat is connected to a connecting pipe. The heat dissipation pipe is connected to the heat dissipation cavity through the connecting pipe.

[0018] By adopting the above technical solution, the cooling fan blows air into the heat pipe. When the cool air passes through the heat pipe of the Venturi tube structure, it can absorb the heat in the heat pipe through the connecting pipe connected to the heat pipe, thereby accelerating the heat dissipation. In addition, during the heat dissipation process, the external air always flows through the heat pipe, reducing the possibility of external dust entering the heat pipe and accumulating inside.

[0019] Optionally, a slider is slidably connected inside the connecting pipe. The slider can conduct or cut off the connecting pipe during sliding. A driving component for driving the slider to slide is also provided inside the heat dissipation cavity.

[0020] By adopting the above technical solution, the driving component can drive the slider to slide inside the connecting tube, and the slider can conduct or cut off the connecting tube during the sliding process. According to the actual situation, the heat dissipation in the heat dissipation cavity can be started or stopped by controlling the movement of the slider.

[0021] Optionally, the drive assembly includes an elastic element, one end of which is connected to a heat sink and the other end to a slider. The elastic element can compress itself when heated.

[0022] By adopting the above technical solution, one end of the elastic element is connected to the heat sink plate and the other end is connected to the slider. The elastic element can compress itself after being heated. When the temperature inside the heat sink cavity rises to a certain level, the elastic element compresses itself to drive the slider to move, thereby connecting the connecting pipe and allowing the heat inside the heat sink cavity to enter the heat sink pipe through the connecting pipe.

[0023] Optionally, a guide tube is coaxially provided at the end of the connecting tube away from the heat dissipation tube. The guide tube is located inside the heat dissipation cavity and one end is connected to the heat dissipation plate. The slider is slidably connected inside the guide tube, and a through hole is provided through the side wall of the guide tube.

[0024] By adopting the above technical solution, the slider can slide inside the guide tube, which can provide guidance for the slider's sliding, making the sliding stable. At the same time, the guide tube has through holes on its side wall, allowing hot air in the heat dissipation cavity to enter the connecting tube through the through holes.

[0025] Optionally, a contact sensor is provided inside the guide tube. One end of the contact sensor is fixed to the heat sink, and the probe of the contact sensor faces the slider. The contact sensor is used to send a signal to an external control unit to control the start and stop of the cooling fan.

[0026] By adopting the above technical solution, a contact sensor is installed inside the guide tube. When the temperature of the air in the heat dissipation cavity rises to a certain temperature, the elastic element compresses itself and drives the slider to slide into the guide tube, so that the connecting tube is connected. The elastic element drives the slider to slide until the slider contacts the probe of the contact sensor. The contact sensor is triggered and sends a signal to the external control unit. The external control unit controls the cooling fan to start working. At this time, the hot air in the heat dissipation cavity can be discharged from the heat dissipation cavity through the heat dissipation pipe.

[0027] Optionally, the housing is provided with a seal inside the connector protrusion position, and the seal abuts against both the inner wall of the housing and the connector.

[0028] By adopting the above technical solution, a sealing element is provided inside the housing at the point where the connector protrudes. The sealing element can seal the part where the connector protrudes, thereby improving the overall sealing effect of the connector.

[0029] In summary, this application includes at least one of the following beneficial effects:

[0030] 1. By installing a cooling fan inside the heat dissipation cavity, the cooling fan can actively blow air to dissipate heat from the heat dissipation plate. At the same time, heat dissipation holes are also provided at the bottom of the outer casing so that hot air can be discharged from the heat dissipation holes.

[0031] 2. By using heat pipes with a Venturi tube structure inside the heat dissipation cavity, the cooling fan blows air towards the heat dissipation tubes. When the external air passes through the heat dissipation tubes, it can draw out the high-temperature air inside the heat dissipation cavity and discharge it from the outer casing through the connecting pipe, and reduce the amount of dust entering the heat dissipation cavity.

[0032] 3. By using an elastic element that can compress itself when heated in the heat dissipation cavity, the elastic element can drive the slider to slide in the connecting pipe. During the sliding process, the slider can open or close the connecting pipe, thereby controlling whether hot air in the heat dissipation cavity is discharged. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the connector shown in Embodiment 1 of this application;

[0034] Figure 2 yes Figure 1 Cross-sectional view at point AA;

[0035] Figure 3 yes Figure 1 Cross-sectional view at BB;

[0036] Figure 4 This is a schematic diagram of the heat pipe structure shown in Embodiment 2 of this application;

[0037] Figure 5 yes Figure 4 Enlarged diagram at point C.

[0038] Explanation of reference numerals in the attached drawings: 1. Outer shell; 11. Sealing layer; 12. Sealing cavity; 13. Sealing element; 14. Heat dissipation cavity; 15. Heat dissipation hole; 16. Cooling fan; 17. Ventilation hole; 2. Connector; 21. First connector; 22. Second connector; 221. Connecting hole; 3. Heat dissipation plate; 31. Heat dissipation insert; 4. Heat dissipation pipe; 41. Inlet section; 42. Contraction section; 43. Throat; 44. Diffusion section; 45. Connecting pipe; 5. Guide pipe; 51. Through hole; 52. Elastic element; 53. Contact sensor; 6. Slider. Detailed Implementation

[0039] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0040] Example 1:

[0041] Embodiment 1 of this application discloses a vehicle-mounted high-current connector, referring to... Figure 1 and Figure 2 The automotive high-current connector includes a housing 1 and a connector 2. The housing 1 is generally rectangular in shape, self-enclosed, and hollow inside. The connector 2 is cylindrical in shape, passing through the housing 1 and extending out of the housing 1 at both ends. The connector 2 includes a first connector 21 and a second connector 22, which are coaxially fixedly connected end-to-end. The first connector 21 is used to plug into other connectors, and the second connector 22 has a coaxially formed connection hole 221 through which it can be connected and fixed to a cable. Both the first connector 21 and the second connector 22 extend out of the housing 1. When the cable is connected and plugged into other connectors, the connector 2 will heat up during operation because it needs to transmit current.

[0042] A sealing layer 11 is provided inside the outer shell 1. The sealing layer 11 can be made of plastic. The sealing layer 11 extends along the length of the connector 2 and surrounds the connector 2. The two ends of the sealing layer 11 along the length of the connector 2 are fixedly connected to the inner wall of the outer shell 1, so that the sealing layer 11 and the outer shell 1 together form a sealed cavity 12. The part of the connector 2 inserted into the outer shell 1 is located in the sealed cavity 12. A sealing element 13 is provided inside the outer shell 1 at the point where the connector 2 protrudes. The sealing element 13 can be a rubber sealing ring. The sealing element 13 abuts against both the inner wall of the outer shell 1 and the connector 2. The sealing element 13 can seal the part where the connector 2 protrudes, improving the overall sealing effect of the connector and reducing the entry of rainwater or dust into the sealed cavity 12. Furthermore, the sealing layer 11 can form a sealed protection for the connector 2, improving the overall waterproof and dustproof effect of the connector.

[0043] Reference Figure 2 and Figure 3 An annular heat dissipation cavity 14 is formed between the outer shell 1 and the sealing partition 11. A heat dissipation plate 3 is embedded in the side wall of the sealing partition 11 within the heat dissipation cavity 14. The heat dissipation plate 3 extends along the length of the connector 2 and surrounds the sealing cavity 12. Multiple heat dissipation blocks 31 are fixed on the inner side wall of the heat dissipation plate 3 near the connector 2. The heat dissipation blocks 31 are spaced apart and surround the connector 2. The end of the heat dissipation block 31 away from the heat dissipation plate 3 extends inward into the sealing cavity 12. Both the heat dissipation plate 3 and the heat dissipation blocks 31 can be made of thermally conductive metal. The heat dissipation block 31 with one end extending into the sealing cavity 12 can directly absorb the heat generated by the connector 2 during operation and transfer the heat to the heat dissipation plate 3, improving the heat transfer effect.

[0044] Multiple heat dissipation holes 15 are provided on the bottom wall of the outer casing 1. After absorbing heat, the heat dissipation plate 3 increases in temperature. The heat dissipation plate 3 can dissipate heat through the heat dissipation holes 15, thereby reducing the accumulation of heat inside the outer casing 1. At the same time, the heat dissipation holes 15 are located on the bottom wall of the outer casing 1, which can reduce the entry of dust or rainwater into the outer casing 1 through the heat dissipation holes 15.

[0045] A cooling fan 16 is installed inside the heat dissipation cavity 14 of the outer casing 1. The cooling fan 16 is fixed to the inner wall of the outer casing 1, and the fan blades of the cooling fan 16 are driven to rotate by a small motor. After the cooling fan 16 rotates, it can blow air onto the surface of the heat sink 3 to dissipate heat, thereby improving the heat dissipation efficiency of the heat sink 3. Multiple ventilation holes 17 are provided through the side wall of the outer casing 1 corresponding to the cooling fan 16. The cooling fan 16 can directly draw in cool outside air into the heat dissipation cavity 14 through the ventilation holes 17 to blow air onto the heat sink 3 to dissipate heat, while blowing hot air from the heat dissipation cavity 14 out of the outer casing 1 through the ventilation holes 17.

[0046] The implementation principle of a vehicle-mounted high-current connector in Embodiment 1 of this application is as follows: the heat dissipation block 31 absorbs the heat in the sealed cavity 12 and transfers the heat to the heat sink 3, which accelerates the dissipation of heat. The heat dissipation fan 16 blows air onto the heat sink 3, which can accelerate the heat dissipation of the heat sink 3. Finally, the heat is discharged from the outer shell 1 through the heat dissipation hole 15 and the ventilation hole 17, thereby improving the heat dissipation effect of the connector.

[0047] Example 2:

[0048] The difference between Example 2 and Example 1 is that: (Refer to...) Figure 4 and Figure 5 The outer casing 1 has a heat dissipation pipe 4 fixed inside the heat dissipation cavity 14. The heat dissipation pipe 4 is arranged parallel to the connector 2 and is positioned corresponding to the position of the cooling fan 16. The air blown out by the cooling fan 16 is directly blown into the heat dissipation pipe 4. One end of the heat dissipation pipe 4 is connected to the cooling fan 16, and the other end is fixed to the inner wall of the outer casing 1. Both the cooling fan 16 and the heat dissipation pipe 4 are separated from the heat dissipation cavity 14. The heat dissipation pipe 4 has a venturi tube structure. Starting from the end closest to the cooling fan 16, the heat dissipation pipe 4 includes an inlet section 41, a contraction section 42, a throat 43, and a diffuser section 44. The inlet section 41 is directly connected to the cooling fan 16, and the inner diameter of the heat dissipation pipe 4 at the throat 43 is smaller than the inner diameter of the inlet section 41 and the contraction section 42. The air blown out by the cooling fan 16 is blown into the heat dissipation pipe 4 through the inlet section 41. The diffuser section 44 is connected to the outer casing 1 and the external space through the ventilation hole 17.

[0049] A connecting pipe 45 connects the throat 43 to the heat dissipation cavity 14, and the heat dissipation pipe 4 is connected to the heat dissipation cavity 14 through the connecting pipe 45. A guide pipe 5 is coaxially fixed to the end of the connecting pipe 45 away from the heat dissipation pipe 4. The guide pipe 5 is located inside the heat dissipation cavity 14 and one end is fixed to the heat dissipation plate 3. Multiple through holes 51 are opened through the side wall of the guide pipe 5. The through holes 51 are opened circumferentially along the guide pipe 5, so that hot air in the heat dissipation cavity 14 can enter the connecting pipe 45 through the through holes 51, and then enter the heat dissipation pipe 4 from the connecting pipe 45. At the same time, the guide pipe 5 can provide guidance for the sliding of the slider 6, so that the sliding can be stable.

[0050] Reference Figure 4 and Figure 5 A slider 6 is slidably connected inside the connecting tube 45. The slider 6 is also slidably connected inside the guide tube 5. An elastic element 52 is provided inside the guide tube 5. One end of the elastic element 52 is fixed to the heat sink 3, and the other end is fixed to the slider 6. The elastic element 52 can be made of shape memory alloy. During the manufacturing of the elastic element 52, it can be actively shortened after being heated to a certain temperature range, and this temperature range is used as the shape recovery temperature range of the elastic element 52. When the temperature is lower than this temperature range, the length of the elastic element 52 will recover and extend. When the elastic element 52 extends, it drives the slider 6 to slide into the connecting tube 45, at which point the slider 6 blocks and cuts off the connecting tube 45. When the elastic element 52 shortens, it drives the slider 6 to slide into the guide tube 5, at which point the connecting tube 45 is open.

[0051] A contact sensor 53 is installed inside the guide tube 5. One end of the contact sensor 53 is fixed to the heat sink 3, and the probe of the contact sensor 53 faces the slider 6. When the slider 6 comes into contact with the probe of the contact sensor 53, the contact sensor 53 is triggered and can send a signal to the external control unit that the connection tube 45 is open.

[0052] During prolonged operation, the high-current automotive connector generates high temperatures within the housing 1. This causes the heat sink 3 to heat up, raising the air temperature within the heat dissipation cavity 14. When the temperature reaches the range where the elastic element 52 deforms, it shortens due to heat, causing the slider 6 to slide into the guide tube 955, thus activating the connecting tube 45. The slider 6 then contacts the contact sensor 53, triggering the sensor and sending a signal to the external control unit. The external control unit then controls the cooling fan 16 to rotate, drawing cooler ambient air into the heat dissipation tube 4. As the cooler air passes through the venturi tube structure of the heat dissipation tube 4, the air velocity increases due to the smallest inner diameter at the throat 43. This reduces the pressure at the throat 43, causing the hot air in the heat dissipation cavity 14 to be drawn out and into the heat dissipation tube 4. Finally, the air blown in by the cooling fan 16 is exhausted from the housing 1 through the ventilation hole 17, achieving active cooling. When the connector stops working, the temperature inside the housing 1 gradually decreases until it falls below the temperature range of the elastic element 52's deformation. The elastic element 52 then returns to its original length, pushing the slider 6 into the connecting tube 45, thereby cutting off the connecting tube 45. At this point, the slider 6 separates from the contact sensor 53, and the cooling fan 16 stops operating. During the heat dissipation process, external air constantly flows through the heat dissipation pipe 4, reducing the possibility of external dust entering and accumulating inside the heat dissipation cavity 14.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vehicle-mounted high-current connector, characterized in that: include The outer shell (1) is closed and hollow inside; Connector (2), the connector (2) passes through the housing (1) and both ends of the housing (1) extend out of the housing (1). One end of the connector (2) is used to connect the cable and the other end is used to plug into other connectors. The outer shell (1) is provided with a sealing partition (11) inside. The sealing partition (11) surrounds the connector (2). The two ends of the sealing partition (11) along the length direction of the connector (2) are connected to the inner wall of the outer shell (1) to form a sealing cavity (12). The part of the connector (2) inserted into the outer shell (1) is located in the sealing cavity (12). An annular heat dissipation cavity (14) is formed between the outer shell (1) and the sealing partition (11). The sealing partition (11) is located in the heat dissipation cavity (14) and a heat dissipation plate (3) is embedded on one side. The bottom surface of the outer shell (1) is provided with multiple heat dissipation holes (15). The outer shell (1) is provided with a heat dissipation fan (16) in the heat dissipation cavity (14). The heat dissipation fan (16) is used to accelerate the heat dissipation of the heat dissipation plate (3).

2. The vehicle-mounted high-current connector according to claim 1, characterized in that: The heat sink (3) has multiple heat sink blocks (31) on the side near the connector (2), and the heat sink blocks (31) extend inward from the end away from the heat sink (3) into the sealing cavity (12).

3. The vehicle-mounted high-current connector according to claim 1, characterized in that: The outer casing (1) has ventilation holes (17) through the side wall of the corresponding cooling fan (16).

4. A vehicle-mounted high-current connector according to claim 1, characterized in that: The outer shell (1) is provided with a heat dissipation pipe (4) in the heat dissipation cavity (14). The heat dissipation pipe (4) is a Venturi tube structure. The heat dissipation pipe (4) is parallel to the connector (2) and is positioned corresponding to the cooling fan (16). The heat dissipation pipe (4) includes an inlet section (41), a contraction section (42), a throat (43), and a diffusion section (44) in sequence. The inlet section (41) corresponds to the cooling fan (16). The diffusion section (44) is connected to the external space of the outer shell (1). The throat (43) is connected to a connecting pipe (45). The heat dissipation pipe (4) is connected to the heat dissipation cavity (14) through the connecting pipe (45).

5. A vehicle-mounted high-current connector according to claim 4, characterized in that: A slider (6) is slidably connected inside the connecting pipe (45). The slider (6) can conduct or cut off the connecting pipe (45) during the sliding process. A driving component for driving the slider (6) to slide is also provided inside the heat dissipation cavity (14).

6. A vehicle-mounted high-current connector according to claim 5, characterized in that: The drive assembly includes an elastic element (52), one end of which is connected to a heat sink (3) and the other end is connected to a slider (6). The elastic element (52) can compress itself after being heated.

7. A vehicle-mounted high-current connector according to claim 5, characterized in that: The connecting pipe (45) is coaxially provided with a guide pipe (5) at one end away from the heat dissipation pipe (4). The guide pipe (5) is located in the heat dissipation cavity (14) and one end is connected to the heat dissipation plate (3). The slider (6) is slidably connected in the guide pipe (5). The guide pipe (5) has a through hole (51) through its side wall.

8. A vehicle-mounted high-current connector according to claim 7, characterized in that: A contact sensor (53) is provided inside the guide tube (5). One end of the contact sensor (53) is fixed to the heat sink (3). The probe of the contact sensor (53) faces the slider (6). The contact sensor (53) is used to send a signal to the external control unit to control the start and stop of the cooling fan (16).

9. A vehicle-mounted high-current connector according to claim 1, characterized in that: The outer shell (1) is provided with a sealing element (13) inside the position where the connector (2) protrudes. The sealing element (13) abuts against both the inner wall of the outer shell (1) and the connector (2).

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