Flat conductor, cable, and electrical connection device

Abstract

The utility model discloses a flat conductor, a cable and an electric connection device, the flat conductor comprises a flat guide core and at least one convex rib which is arranged on the side wall of the flat guide core and extends along the direction of the flat guide core, and liquid cooling channels are arranged in the flat guide core or / and the convex ribs arranged on the side wall of the flat guide core. According to the utility model, the flat conductor is cooled through a liquid cooling scheme, and the heating value of the flat conductor, the cable adopting the flat conductor and the high-voltage connector during working can be obviously reduced, so that when the high-voltage connector is designed, on the premise that super fast charging is realized, the high-voltage connector can be rapidly charged, and the high-voltage connector can be rapidly charged. The sizes of the flat conductor and the cable are reduced, so that the size of the high-voltage connector can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a flat conductor, a cable and an electrical connection device. Background Art

[0002] With the booming development of new energy electric vehicles, there are two main factors restricting the development of new energy electric vehicles: one is the long charging time for a single charge of an electric vehicle; the other is the short cruising range and other problems. Supercharging technology has thus emerged. At present, for high-power charging, mainly under the condition of not increasing the vehicle voltage platform, the charging current is increased. However, after the charging current increases, the heat generated by the terminals and cables will increase rapidly, resulting in a rapid rise in temperature. Continuous high temperature is likely to damage the electronic components of the charging device, and in severe cases, it will even cause a burning safety accident. In order to avoid the occurrence of safety accidents, we must reduce the heat generation and temperature rise of the charging terminals and cables. Increasing the conductor cross-sectional area is the first solution that comes to mind. However, after increasing the conductor cross-sectional area, the occupied space and weight will increase. After the cable weight increases, it will cause the user to be unable to use it normally. Therefore, simply increasing the conductor cross-sectional area to increase the current-carrying capacity cannot meet the actual use requirements. Therefore, ensuring that the temperature rise during charging meets the safety standards has become an urgent technical problem to be solved. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a flat conductor, a cable and an electrical connection device to solve the technical problems mentioned in the background art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a flat conductor, including a flat core and at least one rib provided on the side wall of the flat core and extending along the direction of the flat core. There is a liquid cooling channel extending along the direction of the flat conductor and closed at both ends inside the flat core or / and inside the rib, and the liquid cooling channel is filled with a cooling medium.

[0005] In some embodiments, one end of the liquid cooling channel is closed, and the other end is provided with a plugging structure.

[0006] In some embodiments, the plugging structure is a plug body detachably arranged at the other end of the liquid cooling channel, or a metal cover plate welded at the other end of the liquid cooling channel.

[0007] In some embodiments, the ratio of the volume of the cooling medium filled in the liquid cooling channel to the total volume of the liquid cooling channel does not exceed 95%.

[0008] In some embodiments, there are multiple liquid cooling channels, and the multiple liquid cooling channels are arranged side by side inside the flat core or / and inside the rib.

[0009] In some embodiments, the ratio of the sum of the cross-sectional areas of the plurality of liquid cooling channels arranged side by side in the flat guide core to the cross-sectional area of the flat guide core is not greater than 2 / 3.

[0010] In some embodiments, there are a plurality of the convex ribs, and the plurality of convex ribs are symmetrically distributed on two opposite side walls of the flat conductor;

[0011] And the plurality of liquid cooling channels arranged on the same side wall of the flat guide core are arranged side by side.

[0012] A cable of the present utility model includes at least one of the flat conductors, and an insulating sleeve is arranged outside at least one flat conductor.

[0013] In some embodiments, the number of the flat conductors is plural, and the plural flat conductors extend side by side along the direction of the cable.

[0014] An electrical connection device of the present utility model includes a connector and the flat conductor, the connector includes a housing and at least one terminal, and the terminal is welded to the end of the flat conductor.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the flat guide core of the flat conductor of the present utility model or / and in the convex ribs arranged on the side wall of the flat guide core, liquid cooling channels are arranged, and a cooling medium is filled in the liquid cooling channels. The present utility model cools the flat conductor through a liquid cooling scheme, and can significantly reduce the heat generation of the flat conductor, the cable using the flat conductor, and the high-voltage connector during operation. Therefore, when designing a high-voltage connector, on the premise of realizing super fast charging, the volume of the flat conductor and the cable can be reduced, and further the volume of the high-voltage connector can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model.

[0017] Figure 1 is a schematic structural diagram of the flat conductor provided by the present utility model;

[0018] Figure 2 is Figure 1 a schematic internal structural diagram of the flat conductor shown;

[0019] Figure 3 is a schematic structural diagram of the cable provided by the present utility model;

[0020] Figure 4 is a schematic diagram of the positional relationship between the flat conductor and the terminal in the electrical connection device provided by the present utility model.

[0021] The labels in the figures are as follows:

[0022] 1. Flat conductor; 2. Terminal; 3. Insulating sleeve;

[0023] 10. Flat conducting core; 20. Convex rib; 30. Liquid cooling channel; 40. Sealing structure. Detailed implementation mode

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present invention or its application or use.

[0026] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered as part of the specification.

[0027] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Thus, other examples of exemplary embodiments may have different values.

[0028] Solution 1

[0029] A flat conductor, as Figure 1 and Figure 2 shown, includes a flat conducting core 10 and at least one convex rib 20 provided on the side wall of the flat conducting core 10 and extending along the direction of the flat conducting core 10. A liquid cooling channel 30 extending along the direction of the flat conductor 1 and closed at both ends is provided in the flat conducting core 10 or / and in the convex rib 20. The liquid cooling channel 30 is filled with a cooling medium. It should be noted here that the cooling medium is an insulating coolant or other refrigerants, preferably insulating oils such as silicone oil, and its filling in the liquid cooling channel 30 will not affect the electrical conductivity of the flat conducting core 10.

[0030] In the flat conductor 1 of the present invention, a liquid cooling channel 30 is provided in the flat conducting core 10 or / and in the convex rib provided on the side wall of the flat conducting core. The liquid cooling channel 30 is filled with a cooling medium. The present invention cools the flat conductor 1 through a liquid cooling solution, which can significantly reduce the heat generation of the flat conductor 1 and the cables and high-voltage connectors using the flat conductor 1 during operation. Therefore, when designing a high-voltage connector, on the premise of achieving super fast charging, the volume of the flat conductor 1 and the cables can be reduced, and further the volume of the high-voltage connector can be reduced.

[0031] In one embodiment, as Figure 2As shown, one end of the liquid cooling channel 30 is closed, and a plugging structure 40 is provided at the other end. The plugging structure 40 is a plug body detachably arranged at the other end of the liquid cooling channel, or a metal cover plate welded to the other end of the liquid cooling channel 30. In this embodiment, the technical solution of welding a metal cover plate is preferably adopted. The present utility model takes the cooling medium as an insulating coolant as an example to illustrate the filling of the cooling medium: When filling the coolant, first pour the coolant into the liquid cooling channel 30 from the initially unclosed end, and then use a plug body or a metal cover plate to close the initially unclosed end of the liquid cooling channel 30 to achieve the filling of the coolant; specifically, when filling the coolant, since the insulating coolant will vaporize at high temperatures, resulting in a sharp rise in the pressure inside the liquid cooling channel 30, therefore, for safety considerations, the ratio of the volume of the coolant filled in the liquid cooling channel 30 to the total volume of the liquid cooling channel 30 does not exceed 95%.

[0032] In one embodiment, as Figure 1 and Figure 2 shown, there are multiple liquid cooling channels 30, and the multiple liquid cooling channels 30 are arranged side by side in the flat guide core 10 or / and the convex ribs 20. Further, the ratio of the sum of the cross-sectional areas of the multiple liquid cooling channels 30 arranged side by side in the flat guide core 10 to the cross-sectional area of the flat guide core 10 is not greater than 2 / 3, so that the flat conductor 1 can still maintain good electrical conductivity and mechanical strength while having a good cooling effect.

[0033] In some embodiments, as Figure 1 shown, there are multiple convex ribs 20, and the multiple convex ribs 20 are symmetrically distributed on two opposite side walls of the flat guide core 10; further, the multiple convex ribs 20 arranged on the same side wall of the flat guide core 10 are arranged side by side, so that the flat conductor 1 has better flatness and aesthetics.

[0034] Solution Two

[0035] The present utility model further provides a cable, as Figure 3 shown, including at least one of the above-mentioned flat conductors 1. An insulating sleeve 3 is provided on the outer side of at least one flat conductor 1. The insulating sleeve 3 is injection-molded on the outer side of at least one flat conductor 1, and both ends of the flat conductor 1 are exposed to form a cable structure for transmitting electric energy; in one embodiment, the number of flat conductors 1 is multiple, and the multiple flat conductors 1 extend side by side along the direction of the cable. Generally, the number of flat conductors 1 is set to two or three. If there are two, they are DC+ and DC- respectively. If there are three, they are PE, DC+ and DC- respectively.

[0036] Solution Three

[0037] The present utility model further provides an electrical connection device, as Figure 4As shown, it includes a connector (not shown in the figure) and the above-mentioned flat conductor 1. The connector includes a housing (not shown in the figure) and at least one terminal 2. The terminal 2 is welded to the end of the flat conductor 1. For details, please refer to Figure 4 . As described above, the present utility model cools the flat conductor 1 through a liquid cooling solution, which can significantly reduce the heat generated by the flat conductor 1 and the cable and high-voltage connector using the flat conductor 1 during operation. Therefore, when designing a high-voltage connector, on the premise of achieving super-fast charging, the volume of the flat conductor 1 and the cable can be reduced, and further the volume of the high-voltage connector can be reduced.

[0038] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. A flat conductor, characterized in that: It comprises a flat conductor core and at least one convex rib arranged on the side wall of the flat conductor core and extending along the direction of the flat conductor core. The flat conductor core or / and the convex rib has a liquid cooling channel extending along the direction of the flat conductor and closed at both ends, and the liquid cooling channel is filled with a cooling medium.

2. A flat conductor according to claim 1, characterized in that: One end of the liquid cooling channel is closed, and the other end is provided with a blocking structure.

3. A flat conductor according to claim 2, characterized in that: The blocking structure is a plug body detachably arranged at the other end of the liquid cooling channel, or a metal cover plate welded to the other end of the liquid cooling channel.

4. The flat conductor according to claim 1, characterized in that: The ratio of the volume of the cooling medium filled in the liquid cooling channel to the total volume of the liquid cooling channel does not exceed 95%.

5. The flat conductor according to claim 1, characterized in that: There are a plurality of liquid cooling channels, and the plurality of liquid cooling channels are arranged side by side in the flat guide core and / or the convex rib.

6. A flat conductor according to claim 5, characterized in that: The ratio of the sum of the cross-sectional areas of the plurality of liquid cooling channels arranged side by side in the flat guide core to the cross-sectional area of ​​the flat guide core is no more than 2 / 3.

7. The flat conductor according to claim 1, characterized in that: There are a plurality of convex ribs, and the plurality of convex ribs are symmetrically distributed on two opposite side walls of the flat conductor; Furthermore, the plurality of liquid cooling channels arranged on the same side wall of the flat guide core are arranged side by side.

8. A cable, characterized in that: The invention comprises at least one flat conductor according to any one of claims 1 to 7, wherein an insulating sleeve is arranged on the outer side of the at least one flat conductor.

9. A cable according to claim 8, characterized in that: There are a plurality of flat conductors, and the plurality of flat conductors are arranged to extend side by side along the direction of the cable.

10. An electrical connection device, comprising a connector and a flat conductor according to any one of claims 1 to 7, wherein the connector comprises a housing and at least one terminal, wherein: The terminal is connected to an end portion of the flat conductor by welding.

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