Flat conductor structure and liquid cooling connector

Abstract

The utility model discloses a flat conductor structure and a liquid cooling connector, the flat conductor structure comprises a flat conductor and a first terminal connected with at least one end of the flat conductor, a second liquid cooling channel is arranged in the flat conductor along the direction of the flat conductor, a first liquid cooling channel is arranged in the first terminal, and a second liquid cooling channel is arranged in the second terminal. According to the high-voltage connector, the flat conductor structure of the high-voltage connector is cooled through a liquid cooling scheme, the heating value of the high-voltage connector during working can be obviously reduced, and therefore when the high-voltage connector is designed, on the premise that super fast charging is achieved, the high-voltage connector can be rapidly charged, and the high-voltage connector can be rapidly charged. The size of the flat conductor structure formed by the first terminal and the flat conductor connected with the first terminal is reduced, and the size of the high-voltage connector can be further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a flat conductor structure and a liquid-cooled connector. Background Art

[0002] With the vigorous 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 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, it will increase the occupied space and weight. After the cable weight increases, it will cause users 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 structure and a liquid-cooled connector 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 structure, including a flat conductor and a first terminal connected to at least one end of the flat conductor. A second liquid-cooling channel is arranged along the direction of the flat conductor in the flat conductor. A first liquid-cooling channel is arranged in the first terminal. The connection between the first terminal and the flat conductor is circumferentially welded. The first liquid-cooling channel and the second liquid-cooling channel are connected in communication, and a coolant is arranged in both of them.

[0005] In some embodiments, a plurality of the first liquid-cooling channels and the second liquid-cooling channels are arranged side by side. The plurality of first liquid-cooling channels and the plurality of second liquid-cooling channels are arranged in one-to-one correspondence, and one end of the plurality of first liquid-cooling channels far from the second liquid-cooling channel is connected in communication through a connection channel.

[0006] In some embodiments, two first liquid-cooling channels and two second liquid-cooling channels are arranged side by side. One end of the two first liquid-cooling channels far from the second liquid-cooling channel is connected in communication through an arc-shaped connection channel.

[0007] In some embodiments, the cross-sectional dimensions of the first liquid cooling channel and the second liquid cooling channel are the same, and the ratio of the sum of the cross-sectional areas of multiple first liquid cooling channels / multiple second liquid cooling channels to the cross-sectional area of the flat conductor is not greater than 2 / 3.

[0008] In some embodiments, the first terminal has the same outer shape as the end of the flat conductor and is butt-connected, and the circumferential welding connection is made at the connection between the outer wall of the first terminal and the flat conductor, and the depth of the welded seam does not exceed the thickness of the outer walls of the first terminal and the flat conductor.

[0009] In some embodiments, a plugging cavity and a first liquid cooling channel are arranged in the end of the first terminal from outside to inside in a communicating manner, and the end of the flat conductor is inserted into the plugging cavity so that the second liquid cooling channel is communicated with the first liquid cooling channel.

[0010] In some embodiments, the circumferential welding connection is made between the end of the first terminal and the outer peripheral surface of the flat conductor, and the depth of the welded seam does not exceed the thickness of the outer wall of the flat conductor.

[0011] In some embodiments, the first terminal and the flat conductor are connected by friction stir welding or laser welding.

[0012] A liquid cooling connector of the present utility model includes a plug and a socket which are adaptively connected. A plug terminal and a socket terminal are respectively arranged in the plug and the socket. The plug terminal includes the above-mentioned flat conductor structure and a second terminal fixedly connected to the flat conductor structure, and the second terminal is fixedly connected to the first terminal.

[0013] In some embodiments, a temperature sensing mechanism is arranged in the socket, and the output end of the temperature sensing mechanism is connected to an external control system.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model cools the flat conductor structure of the high-voltage connector through a liquid cooling solution, which can significantly reduce the heat generation of the high-voltage connector during operation. Therefore, when designing the high-voltage connector, on the premise of realizing super fast charging, the volume of the flat conductor structure composed of the first terminal and the flat conductor connected thereto 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 the specification and constituting a part of the 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 It is a schematic internal structure diagram of the flat conductor structure provided by the present utility model;

[0017] Figure 2is Figure 1 Schematic diagram of the structure of the flat conductor in the flat conductor structure shown;

[0018] Figure 3 is Figure 2 Side view of the flat conductor shown;

[0019] Figure 4 is Figure 1 Schematic diagram of the structure of the first terminal in the flat conductor structure shown;

[0020] Figure 5 Schematic diagram of the structure of the liquid cooling connector provided by the present utility model;

[0021] Figure 6 Schematic diagram of the positional relationship between the flat conductor structure and the second terminal;

[0022] Figure 7 is Figure 5 Schematic diagram of the structure of the socket in the liquid cooling connector shown;

[0023] Figure 8 Schematic diagram of the internal structure of another flat conductor structure in the embodiment;

[0024] Figure 9 Schematic diagram of the internal structure of another flat conductor structure in the embodiment.

[0025] The markings in the figure are as follows:

[0026] 1. Plug; 2. Socket; 3. Flat conductor structure; 4. Second terminal; 5. Temperature sensing mechanism;

[0027] 10. Flat conductor; 101. Second liquid cooling channel;

[0028] 20. First terminal; 201. First liquid cooling channel; 202. Connection channel; 203. Insertion cavity. Detailed implementation manners

[0029] Now, various exemplary embodiments of the present utility model will 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 utility model.

[0030] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present utility model or its application or use.

[0031] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification.

[0032] In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0033] A flat conductor structure, such as Figures 1 - 4 shown, includes a flat conductor 10 and a first terminal 20 connected to at least one end of the flat conductor 10. Both the flat conductor 10 and the first terminal 20 are flat and are butt-connected. A second liquid cooling channel 101 is provided along the direction of the flat conductor 10 inside the flat conductor 10, and a first liquid cooling channel 201 is provided inside the first terminal 20. The connection between the first terminal 20 and the flat conductor 10 is circumferentially welded. The first liquid cooling channel 201 and the second liquid cooling channel 101 are connected in communication, and a coolant is provided therein. 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 electrical conductivity of the first terminal 20 and the flat conductor 10 when flowing in the first liquid cooling channel 201 and the second liquid cooling channel 101. The utility model cools the flat conductor structure 3 of the high-voltage connector through a liquid cooling scheme, which can significantly reduce the heat generation of the high-voltage connector during operation. Thus, when designing the high-voltage connector, on the premise of achieving super fast charging, the volume of the flat conductor structure 3 composed of the first terminal 20 and the flat conductor 10 connected thereto can be reduced, and further the volume of the high-voltage connector can be reduced.

[0034] Such as Figures 1 - 4 shown, a plurality of first liquid cooling channels 201 and a plurality of second liquid cooling channels 101 are both arranged side by side, and the plurality of first liquid cooling channels 201 and the plurality of second liquid cooling channels 101 are arranged in one-to-one correspondence, and one end of the plurality of first liquid cooling channels 201 far from the second liquid cooling channel 101 is connected in communication through a connection channel 202; specifically, two first liquid cooling channels 201 and two second liquid cooling channels 101 are both arranged side by side, and one end of the two first liquid cooling channels 201 far from the second liquid cooling channel 101 is connected in communication through an arc-shaped connection channel 202. The coolant flows into the flat conductor 10 from one of the second liquid cooling channels 101, and then flows out from the other second liquid cooling channel 101 after passing through the first liquid cooling channel 201 and the connection channel 202 inside the first terminal 20. By changing the flow rate of the coolant, the cooling effect of the flat conductor structure can be controlled.

[0035] Furthermore, as Figures 1 - 4 shown, the cross-sectional dimensions of the first liquid cooling channel 201 and the second liquid cooling channel 101 are the same, and the ratio of the sum of the cross-sectional areas of the plurality of first liquid cooling channels 201 / the plurality of second liquid cooling channels 101 to the cross-sectional area of the flat conductor 10 is not greater than 2 / 3, so that the flat conductor 10 can still maintain good electrical conductivity and mechanical strength while having a good cooling effect.

[0036] In one embodiment, as Figure 1 shown, the first terminal 20 has the same outer shape as the end of the flat conductor 10 and is butt-connected. The circumferential connection between the first terminal 20 and the outer wall of the flat conductor 10 is a welding connection, specifically friction stir welding or laser welding. The depth of the welded seam does not exceed the thickness of the outer walls of the first terminal 20 and the flat conductor 10.

[0037] In another embodiment, the end of the first terminal 20 is provided with a communicating insertion cavity 203 and a first liquid cooling channel 201 from the outside to the inside. The end of the flat conductor 10 is inserted into the insertion cavity 203 so that the second liquid cooling channel 101 communicates with the first liquid cooling channel 201. The first liquid cooling channel 201 can be set as multiple channels or just a cavity communicating with the insertion cavity 203. If it is set as multiple channels, the multiple first liquid cooling channels 201 are arranged in one-to-one correspondence with the multiple second liquid cooling channels 101, and one end of the multiple first liquid cooling channels 201 away from the second liquid cooling channel 101 is connected and communicated through a connection channel 202. For details, please refer to Figure 8 ; if it is a cavity communicating with the insertion cavity 203, the first liquid cooling channel 201 is directly communicated with the multiple second liquid cooling channels 101. For details, please refer to Figure 9 ; the end of the first terminal 20 is circumferentially welded to the outer peripheral surface of the flat conductor 10, specifically friction stir welding or laser welding. The depth of the welded seam does not exceed the thickness of the outer wall of the flat conductor 10. The setting of the insertion cavity 203, on the one hand, serves the purpose of positioning the welding position of the first terminal 20 and the flat conductor 10 to prevent the first liquid cooling channel 201 and the second liquid cooling channel 101 from affecting the cooling effect due to incomplete conduction. On the other hand, since the end of the first terminal 20 is inserted into the insertion cavity 203, the effect of preventing coolant leakage is better.

[0038] A liquid cooling connector of the present utility model, as Figure 5 and Figure 6 shown, includes a plug 1 and a socket 2 that are adaptively connected. A plug terminal and a socket terminal are respectively arranged in the plug 1 and the socket 2. The plug terminal includes the above-mentioned flat conductor structure 3 and a second terminal 4 fixedly connected to the flat conductor structure 3. The second terminal 4 is fixedly connected to the first terminal 20.

[0039] Further, as Figure 7As shown, a temperature sensing mechanism 5 is provided inside the socket 2. The output end of the temperature sensing mechanism 5 is connected to an external control system. The temperature sensing mechanism 5 monitors the temperature inside the socket 2 in real time and transmits the monitored signal to the external control system in real time. Then, the external control system changes the flow rate of the coolant in the first liquid cooling channel 201 and the second liquid cooling channel 101 through a corresponding drive system, thereby intelligently adjusting the temperature of the flat conductor structure 3 and the liquid cooling connector. Of course, the external control system can also display the temperature signal to on-site operators through display devices such as display panels and buzzers. After receiving the alarm signal, the on-site operators manually adjust the flow rate of the coolant in the first liquid cooling channel 201 and the second liquid cooling channel 101, thereby realizing the adjustment of the temperature of the flat conductor structure 3 and the liquid cooling connector.

[0040] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A flat conductor structure, comprising a flat conductor and a first terminal connected to at least one end of the flat conductor, characterized in that: A second liquid cooling channel is arranged inside the flat conductor along the direction of the flat conductor, a first liquid cooling channel is arranged inside the first terminal, the first terminal is circumferentially welded to the flat conductor at the connection point, the first liquid cooling channel and the second liquid cooling channel are connected, and coolant is arranged in both.

2. A flat conductor structure according to claim 1, characterized in that: A plurality of the first liquid cooling channels and the second liquid cooling channels are arranged side by side, the plurality of first liquid cooling channels and the plurality of second liquid cooling channels are arranged in one-to-one correspondence, and the ends of the plurality of first liquid cooling channels away from the second liquid cooling channels are connected through a connecting channel.

3. A flat conductor structure according to claim 2, characterized in that: Two of the first liquid cooling channels and the second liquid cooling channels are arranged side by side, and the two first liquid cooling channels are connected by an arc-shaped connecting channel at one end away from the second liquid cooling channel.

4. A flat conductor structure according to claim 2, characterized in that: The cross-sectional dimensions of the first liquid cooling channel and the second liquid cooling channel are the same, and the ratio of the sum of the cross-sectional areas of the plurality of first liquid cooling channels / the plurality of second liquid cooling channels to the cross-sectional area of ​​the flat conductor is not greater than 2 / 3.

5. A flat conductor structure according to claim 1, characterized in that: The first terminal has the same shape as the end of the flat conductor and is butt-connected. The first terminal is circumferentially welded to the outer wall of the flat conductor, and the depth of the weld does not exceed the thickness of the first terminal and the outer wall of the flat conductor.

6. A flat conductor structure according to claim 1, characterized in that: The first terminal end is provided with a connecting cavity and a first liquid cooling channel connected from outside to inside, and the flat conductor end is inserted into the connecting cavity so that the second liquid cooling channel is connected with the first liquid cooling channel.

7. A flat conductor structure according to claim 6, characterized in that: The first terminal end is circumferentially welded to the outer peripheral surface of the flat conductor, and the depth of the weld does not exceed the thickness of the outer wall of the flat conductor.

8. The flat conductor structure according to claim 1, characterized in that: The first terminal and the flat conductor are connected by friction stir welding or laser welding.

9. A liquid-cooled connector, comprising a plug and a socket adapted for connection, wherein the plug and the socket are provided with a plug terminal and a socket terminal respectively, wherein the plug terminal comprises a flat conductor structure and a second terminal fixedly connected to the flat conductor structure, characterized in that: The flat conductor structure is the flat conductor structure according to any one of claims 1 to 8, and the second terminal is fixedly connected to the first terminal.

10. A liquid cooling connector according to claim 9, characterized in that: A temperature sensing mechanism is arranged in the socket, and an output end of the temperature sensing mechanism is connected to an external control system.

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