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, high-power charging mainly increases the charging current size without increasing the vehicle voltage platform. However, after the charging current increases, the heat generation of the terminals and cables will increase rapidly, resulting in a rapid increase 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, but increasing the conductor cross-sectional area will increase the occupied space and weight. 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. Summary 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 inside the flat core or / and inside the rib, and a coolant flows through the liquid cooling channel.

[0005] 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.

[0006] In some embodiments, the ratio of the sum of the cross-sectional areas of the multiple liquid cooling channels arranged side by side inside the flat core to the cross-sectional area of the flat core is not greater than 2 / 3.

[0007] In some embodiments, there are multiple ribs, and the multiple ribs are symmetrically distributed on two opposite side walls of the flat core.

[0008] In some embodiments, the multiple ribs arranged on the same side wall of the flat core are arranged side by side.

[0009] In some embodiments, the flow directions of the coolant flowing in at least two of the multiple liquid cooling channels are opposite.

[0010] In some embodiments, one end of the multiple liquid cooling channels is connected and arranged through a connecting channel.

[0011] A cable provided by the present utility model includes at least one of the flat conductors, and an insulating sleeve is arranged on the outer side of at least one flat conductor.

[0012] In some embodiments, the number of the flat conductors is multiple, and the multiple flat conductors are arranged side by side and extend along the direction of the cable.

[0013] An electrical connection device provided by 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.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the flat conductor of the present utility model, liquid cooling channels are arranged in the flat conducting core of the flat conductor or / and in the ribs provided on the side wall of the flat conducting core. The coolant flows in the liquid cooling channels, and the flat conductor is cooled through the liquid cooling solution, which can significantly reduce the heat generated when the flat conductor, the cable using the flat conductor, and the high-voltage connector are working. 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

[0015] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0016] Figure 1 is a schematic structural diagram of the flat conductor provided by the present utility model;

[0017] Figure 2 is Figure 1 a schematic internal structural diagram of the flat conductor shown;

[0018] Figure 3 is a schematic structural diagram of the cable provided by the present utility model;

[0019] 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.

[0020] The labels in the figures are as follows:

[0021] 1. Flat conductor; 2. Terminal; 3. Insulating sleeve;

[0022] 10. Flat guide core; 20. Convex rib; 30. Liquid cooling channel; 40. Connection channel. Detailed implementation mode

[0023] 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, numerical expressions and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0024] The following description of at least one exemplary embodiment is actually merely illustrative and in no way restricts the present invention and its application or use.

[0025] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said techniques, methods and devices should be regarded as part of the specification.

[0026] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0027] Solution 1

[0028] A flat conductor, as Figure 1 and Figure 2 shown, includes a flat guide core 10 and at least one convex rib 20 provided on the side wall of the flat guide core 10 and extending along the direction of the flat guide core 10. A liquid cooling channel 30 extending along the direction of the flat conductor 1 is provided inside the flat guide core 10 or / and inside the convex rib 20, and a coolant flows through the liquid cooling channel 30. It should be noted here that the coolant is an insulating coolant, such as insulating oil like silicone oil, and it will not affect the conductivity of the flat guide core 10 when flowing through the liquid cooling channel 30.

[0029] In the flat conductor 1 of the present invention, a liquid cooling channel 30 is provided inside the flat guide core 10 or / and inside the convex rib 20 provided on the side wall of the flat guide core, and a coolant flows through the liquid cooling channel 30. 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 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.

[0030] In one embodiment, as Figure 1 and Figure 2As shown, there are multiple liquid cooling channels 30, and the multiple liquid cooling channels 30 are arranged side by side within the flat conducting 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 within the flat conducting core 10 to the cross-sectional area of the flat conducting 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.

[0031] In one embodiment, 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 conducting core 10; further, the multiple convex ribs 20 arranged on the same side wall of the flat conducting core 10 are arranged side by side, so that the flat conductor 1 has better flatness and aesthetics.

[0032] In one embodiment, the flow directions of the coolant flowing in at least two of the multiple liquid cooling channels 30 are opposite. Further, one end of the multiple liquid cooling channels 30 is connected and arranged through a connecting channel 40. In this embodiment, two liquid cooling channels 30 are taken as an example to illustrate the technical solution of the present invention: the coolant flows into the flat conducting core 10 from one of the liquid cooling channels 30, and then flows out from the other liquid cooling channel 30 through the connecting channel 40. By changing the flow rate of the coolant, the cooling effect of the flat conductor 1 can be controlled. For details, please refer to Figure 2 。

[0033] Solution Two

[0034] The present invention further provides a cable. As Figure 3 shown, it includes at least one of the above-mentioned flat conductors 1. An insulating sleeve 3 is arranged outside at least one flat conductor 1. The insulating sleeve 3 is injection-molded outside 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 two or three. If there are two, they are DC+ and DC- respectively. If there are three, they are PE, DC+ and DC- respectively.

[0035] Solution Three

[0036] The present invention further provides an electrical connection device, which 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, the cable and the 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.

[0037] 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 for illustrative purposes only 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 cooling liquid flows in the liquid cooling channel.

2. A 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.

3. A flat conductor according to claim 2, 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.

4. 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 guide core.

5. A flat conductor according to claim 4, characterized in that: The plurality of convex ribs arranged on the same side wall of the flat guide core are arranged side by side.

6. The flat conductor according to claim 2, characterized in that: The cooling liquids flowing in at least two of the multiple liquid cooling channels have opposite flowing directions.

7. The flat conductor according to claim 2, characterized in that: One end of each of the plurality of liquid cooling channels is connected via a connecting channel.

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 the end of the flat conductor by welding.

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