CN219874117U - Liquid-cooled terminal cable connection structure and connector - Google Patents

Abstract

The utility model discloses a liquid-cooled terminal cable connecting structure and a connector, comprising a first component and a second component which are communicated through a connecting pipe, wherein the first component and the second component comprise a connecting terminal, a crimping terminal, a honeycomb duct, a cable pipe and a cable, the cable is sleeved on the outer side of the cable, and a first flow channel is formed between the first component and the second component; the honeycomb duct is arranged in the connecting terminal and the compression joint terminal and forms a second flow passage with the connecting terminal and the inner wall of the compression joint terminal; the interior of the flow guide pipe is hollow to form a third flow passage, and the third flow passage is communicated with the first flow passage and the second flow passage; the honeycomb duct is of an L-shaped circular tube structure and comprises a first section and a second section respectively; the front end of the cable is provided with a hollow contact end, and the contact end is matched with the crimping terminal to realize radial limit and axial limit on the honeycomb duct. In the utility model, the joint of the guide pipe and the cable is also provided with cooling liquid circulation, so that the cooling area of the cooling liquid is enlarged and the cooling effect of the cooling liquid is enhanced.

Description

Liquid-cooled terminal cable connection structure and connector

Technical Field

The utility model relates to the technical field of connectors, in particular to a liquid-cooled terminal cable connecting structure and a connector.

Background

The new energy automobile using the vehicle-mounted power supply as main power is popularized and used due to the advantages of low energy consumption, low noise, low carbon emission and the like, and the connector is an indispensable component in the new energy automobile industry. The connecting terminal and the cable are necessary parts of the new energy automobile in a charging link, and generate a large amount of heat under the working conditions of high voltage and high current, and overheat can lead to the current carrying capacity of the charging terminal to be reduced, so that the cable is easy to burn out, and then the more dangerous problems such as scalding or fire disaster and the like are caused. Therefore, temperature control of the connection terminals and the cables is very important.

Chinese patent CN 207426225U discloses a liquid-cooled cable plugging assembly, two ends of the cable are fixedly connected with terminals respectively, and a liquid flow channel is arranged in the cable to flow cooling liquid to cool the cable. However, in such a structure, the connection between the end of the cable and the terminal, which is most likely to be damaged by excessive temperature, is not circulated with cooling liquid, and there is still a great safety hazard in long-term use.

Chinese patent CN107681314a discloses another liquid-cooled cable assembly, which is electrically connected to a lead and a charging terminal by plugging the pin core, and provides a cooling liquid channel by the pin core, but the liquid-cooled cable assembly requires a plurality of bolts and nuts during assembly, which is inconvenient to turn.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a liquid-cooled terminal cable connection structure and a connector.

The aim of the utility model is achieved by the following technical scheme:

the liquid-cooled terminal cable connecting structure comprises a first component and a second component which are communicated through a connecting pipe, wherein the first component and the second component comprise a connecting terminal, a crimping terminal, a honeycomb duct, a cable pipe and a cable, and the connecting terminal is fixedly connected with the cable through the crimping terminal to form conductive connection; one end of the cable tube is fixed on the crimping terminal, the cable tube is sleeved outside the cable, and a first flow passage is formed between the cable tube and the crimping terminal; the honeycomb duct is arranged in the connecting terminal and the compression joint terminal and forms a second flow passage with the inner walls of the connecting terminal and the compression joint terminal; a third flow passage is formed in the hollow part of the flow guide pipe, and the first flow passage and the second flow passage are communicated by the third flow passage; the honeycomb duct is of an L-shaped circular tube structure and comprises a first section and a second section respectively; the front end of the cable is provided with a contact end with a hollow inside, the outer side of the contact end is clung to the inner wall of the crimping terminal, and the inner side of the contact end is clung to the second section of the honeycomb duct and matched with the crimping terminal to realize radial limit on the honeycomb duct; the inner side of the contact end of the cable is provided with a step surface, and the step surface is clung to the first section of the guide pipe and is matched with the crimping terminal to realize axial limit on the guide pipe.

Preferably, the first section of the flow guiding pipe is provided with a connecting port, a notch is formed at the side part of the contact end of the cable, and the connecting port is communicated with the first flow channel through the notch.

Preferably, the inner diameter of the contact end is matched with the outer diameter of the flow guiding pipe.

Preferably, a limiting groove is formed at a port of the crimping terminal, and the limiting groove is clamped with the outer wall of the first section of the flow guiding pipe and cooperates with the notch to realize circumferential limiting on the flow guiding pipe.

Preferably, both ends of the connection pipe are connected to crimp terminals in the first and second modules.

Preferably, the connecting pipe forms a linear tubular shape; or forming a U-shaped tubular shape; or a Y-shaped tube is formed, and a cooling pipe is not communicated with a third port connected with the first component and the second component.

Preferably, the connecting terminal is in threaded connection with the end part of the crimping terminal, and a sealing ring is arranged at the connecting part of the connecting terminal and the crimping terminal.

A connector comprising the liquid-cooled terminal cable connection structure as described above.

The beneficial effects of the utility model are mainly as follows:

1. the tail end of the guide pipe is arranged into an L-shaped bent shape, a notch is arranged at the side part of the contact end of the cable to be matched with the connecting port of the guide pipe so as to be communicated with the first flow passage and the second flow passage, so that the connection part of the connecting terminal and the cable can be communicated with cooling liquid, the temperature control of the connection part of the cable and the connecting terminal is ensured, the cooling liquid can cool the connecting terminal, the cable and the connection part of the connecting terminal and the cable in all aspects, the cooling effect is improved to the greatest extent, and the safe use and the current-carrying stability between the connecting terminal and the cable are ensured;

2. the L-shaped structure of the guide pipe enables the contact ends of the crimping terminal and the cable to form effective limit for the guide pipe when the guide pipe is connected with the crimping terminal and the cable, so that the guide pipe does not need other fastening elements for positioning, the whole volume is reduced to the greatest extent, the assembly is simplified, and the manufacturing cost is saved;

3. the connecting pipe adopts various feasible embodiments, the linear type and U-shaped can adopt a cooling mode of one inlet and one outlet, the Y-shaped can adopt a cooling mode of two inlets and two outlets, and the universality is improved by meeting different requirements.

Drawings

The technical scheme of the utility model is further described below with reference to the accompanying drawings:

fig. 1: an exploded view of a first embodiment of the present utility model;

fig. 2: a schematic diagram of a first embodiment of the present utility model;

fig. 3: a cross-sectional view of a first embodiment of the present utility model;

fig. 4: a schematic diagram of a second embodiment of the present utility model;

fig. 5: a schematic diagram of a third embodiment of the present utility model.

Detailed Description

The present utility model will be described in detail below with reference to specific embodiments shown in the drawings. The embodiments are not limited to the present utility model, and structural, methodological, or functional modifications of the utility model from those skilled in the art are included within the scope of the utility model.

In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the scheme, the direction approaching the operator is the near end, and the direction separating from the operator is the far end, with reference to the operator.

As shown in fig. 1 to 5, the utility model discloses a liquid-cooled terminal cable connecting structure, which comprises a first component and a second component which are communicated through a connecting pipe 1, wherein the first component and the second component respectively comprise a connecting terminal 2, a crimping terminal 3, a flow guiding pipe 4, a cable pipe 5 and a cable 6, and the connecting terminal 2 is fixedly connected with the cable 6 through the crimping terminal 3 to form conductive connection; one end of the cable tube 5 is fixed on the crimping terminal 3, the cable tube 5 is sleeved outside the cable 6, and a first flow channel 100 is formed between the cable tube 5 and the crimping terminal; the flow guide pipe 4 is arranged in the connecting terminal 2 and the compression joint terminal 3 and forms a second flow passage 200 with the inner walls of the connecting terminal 2 and the compression joint terminal 3; a third flow passage 300 is formed in the hollow part of the flow guide pipe 4, and the third flow passage 300 communicates the first flow passage 100 with the second flow passage 200; the flow guiding pipe 4 is in an L-shaped circular pipe structure and comprises a first section 402 and a second section 403 respectively; the front end of the cable 6 is provided with a contact end 602 with a hollow inside, the outer side of the contact end 602 is clung to the inner wall of the crimping terminal 3, the inner side of the contact end 602 is clung to the second section 403 of the honeycomb duct 4 and is matched with the crimping terminal 3 to realize radial limit on the honeycomb duct 4; the inner side of the contact end 602 of the cable 6 is provided with a step surface 603, and the step surface 603 is tightly attached to the first section 402 of the flow guiding pipe 4 and cooperates with the crimping terminal 3 to realize axial limit on the flow guiding pipe 4.

When the honeycomb duct 4 is in an L-shaped structure and is connected with the crimping terminal 3 and the cable 6, the contact end 602 of the crimping terminal 3 and the cable 6 can effectively limit the honeycomb duct 4, so that the honeycomb duct 4 does not need other fastening elements for positioning, the whole volume can be reduced to the greatest extent, the assembly is simplified, and the manufacturing cost is saved.

Specifically, as shown in fig. 1 and fig. 3, the inner diameter of the contact end 602 is matched with the outer diameter of the flow guiding tube 4, and the cable 6, the crimping terminal 3, the cable tube 5 and the flow guiding tube 4 are preferably tightly matched in a crimping manner, so that the installation is more convenient, the connection tightness between the two is ensured, and the leakage of the cooling liquid is prevented.

The first section 402 of the flow guide pipe 4 is provided with a connecting port 401, a notch 601 is formed at the side part of a contact end 602 of the cable 6, the connecting port 401 is clamped in the notch 601, the notch 601 is limited to the connecting port 401, the connecting port 401 is opposite to the first flow passage 100, the connecting port 401 is ensured to be communicated with the first flow passage 100 through the notch 601, the joint of the cable 6 and the crimping terminal 3 can be cooled by cooling liquid circulation, the cooling range of the cooling liquid is enlarged, the cooling effect of the cooling liquid is enhanced, the temperature control of the joint of the cable 6 and the connecting terminal 2 is ensured, the cooling liquid can cool the connecting terminal 2, the cable 6 and the joint of the connecting terminal 2 and the cable 6 in an all-around way, the cooling effect is improved to the greatest extent, and the safe use and the current-carrying stability among the connecting terminal and the cable are ensured.

The port of the crimping terminal 3 is formed with a limit groove 301, and the limit groove 301 is clamped with the outer wall of the first section 402 of the flow guiding pipe 4 and cooperates with the notch 601 to realize circumferential limit on the flow guiding pipe 4. The end walls of the limit groove 301 and the notch 601 are circular arcs matched with the connection port 401, so as to further improve the limit effect of the limit groove 301 and the notch 601.

The two ends of the connecting pipe 1 in the scheme are connected to the crimp terminal 3 or the cable tube 5 in the first component and the second component. In a preferred embodiment, two ends of the connecting pipe 1 are connected to crimp terminals 3 in the first and second components, and the connecting pipe 1 communicates between the first and second components by communicating with the second flow passage 200. In other possible embodiments, two ends of the connecting pipe 1 are connected to the cable tubes 5 in the first component and the second component, and then the connecting pipe 1 communicates between the first component and the second component by communicating with the first flow channel 100.

As shown in fig. 2, 4 and 5, three possible embodiments of the connecting tube 1 are shown. Fig. 2 shows a first embodiment of the connecting tube 1, in which the connecting tube 1 is formed in a straight tubular shape. The first embodiment is a cooling mode of single inlet and single outlet of the cooling liquid flowing from the first component to the second component or from the second component to the first component, the linear structure of the connecting pipe 1 can save materials as much as possible, and the connecting pipe 1 is preferably connected to the crimping terminal 3, so that the outer diameter of the cable 6 can be as small as possible, thereby reducing the whole weight and providing the user with the feeling of use.

Fig. 4 is a second embodiment of the connecting pipe 1, which is the same as the first embodiment in a single-in single-out cooling mode, and the second embodiment is different from the first embodiment in that the connecting pipe 1 is in a U-shaped tubular shape, and the U-shaped structure can reduce the space between the first component and the second component while the length of the connecting pipe 1 is kept unchanged, so as to ensure an electrical gap and a creepage distance, so as to meet the safety standard.

Fig. 5 is a third embodiment of the connecting pipe 1, in which the connecting pipe 1 in the third embodiment forms a Y-shape, which is not communicated with a cooling pipe (not shown in the figure) connected to the third ports 101 of the first component and the second component, and the Y-shape of the connecting pipe 1 enables a two-in one-out cooling mode between the first component and the second component, that is, cooling liquid is simultaneously input from the first component and the second component, and then output from the third ports 101 of the connecting pipe 1, so that the first component and the second component achieve the same cooling effect.

Further, the ends of the connecting terminal 2 and the press-fit terminal 3 are in threaded connection, and a sealing ring 7 is arranged at the joint of the connecting terminal 2 and the press-fit terminal 3. The sealing ring 7 is arranged to ensure tightness of connection between the connection terminal 2 and the crimp terminal 3.

In addition, the utility model also discloses a connector which comprises the liquid-cooled terminal cable connecting structure.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims (8)

1. The liquid-cooled terminal cable connecting structure comprises a first component and a second component which are communicated through a connecting pipe (1), wherein the first component and the second component comprise a connecting terminal (2), a crimping terminal (3), a honeycomb duct (4), a cable tube (5) and a cable (6), and the connecting terminal (2) is fixedly connected with the cable (6) through the crimping terminal (3) to form conductive connection; one end of the cable tube (5) is fixed on the crimping terminal (3), the cable tube (5) is sleeved outside the cable (6), and a first flow channel (100) is formed between the cable tube and the cable tube; the honeycomb duct (4) is arranged in the connecting terminal (2) and the compression joint terminal (3) and forms a second flow passage (200) with the inner walls of the connecting terminal (2) and the compression joint terminal (3); a third flow passage (300) is formed in the hollow part of the flow guide pipe (4), and the third flow passage (300) is used for communicating the first flow passage (100) with the second flow passage (200); the method is characterized in that:

the flow guide pipe (4) is of an L-shaped circular pipe structure and comprises a first section (402) and a second section (403) respectively;

the front end of the cable (6) is provided with a contact end (602) with a hollow inside, the outer side of the contact end (602) is clung to the inner wall of the pressure welding terminal (3), and the inner side of the contact end (602) is clung to the second section (403) of the flow guiding pipe (4) and matched with the pressure welding terminal (3) to realize radial limit on the flow guiding pipe (4);

the inner side of the contact end (602) of the cable (6) is provided with a step surface (603), and the step surface (603) is clung to the first section (402) of the guide pipe (4) and is matched with the crimping terminal (3) to realize axial limit on the guide pipe (4).

2. The liquid-cooled terminal cable connection structure of claim 1, wherein: the first section (402) of the flow guide pipe (4) is provided with a connecting port (401), a notch (601) is formed at the side part of the contact end (602) of the cable (6), and the connecting port (401) is communicated with the first flow channel (100) through the notch (601).

3. The liquid-cooled terminal cable connection structure of claim 2, wherein: the inner diameter of the contact end (602) is matched with the outer diameter of the flow guide pipe (4).

4. The liquid-cooled terminal cable connection structure of claim 3, wherein: the port of the crimping terminal (3) is provided with a limiting groove (301), and the limiting groove (301) is clamped with the outer wall of the first section (402) of the flow guide pipe (4) and cooperates with the notch (601) to realize circumferential limiting of the flow guide pipe (4).

5. The liquid-cooled terminal cable connecting structure of any one of claims 1-4, wherein: and two ends of the connecting pipe (1) are connected to crimping terminals (3) in the first component and the second component.

6. The liquid-cooled terminal cable connection structure of claim 5, wherein: the connecting pipe (1) forms a linear tubular shape; or forming a U-shaped tubular shape; or a Y-shaped tube, which is not communicated with a third port (101) connected with the first component and the second component, and is provided with a cooling pipe.

7. The liquid-cooled terminal cable connection structure of claim 1, wherein: the connecting terminal (2) is in threaded connection with the end part of the crimping terminal (3), and a sealing ring (7) is arranged at the connecting position of the connecting terminal (2) and the crimping terminal (3).

8. A connector, characterized in that: a liquid cooled terminal cable connection structure comprising any one of claims 1-7.