Cable and charging gun

Abstract

The utility model relates to a cable and a charging gun, the cable comprises a cable sheath, a plurality of liquid cooling pipes and a conductor wire group, and the plurality of liquid cooling pipes are arranged in the cable sheath and used for circulation of a cooling medium; the conductor wire group is arranged in the cable sheath and comprises at least two conductor wires of the same pole, the conductor wires and the liquid cooling pipes are arranged in a one-to-one correspondence mode, and the conductor wires wrap the outer sides of the liquid cooling pipes. The cable disclosed by the utility model comprises the at least two homopolar conductor wires, and the conductor wires wrap the outer side of the liquid cooling pipe, so that the heat exchange area of the conductor wires in the cable and the liquid cooling pipe can be increased, and therefore, the heat dissipation effect of the liquid cooling pipe on the conductor wires is ensured, and the current-carrying performance of the cable is improved; besides, inflow and outflow of a cooling medium can be realized in the liquid cooling pipe wrapped by the conductor wires of the same pole, and an independent liquid inlet pipeline or an independent liquid outlet pipeline does not need to be arranged, so that the conductor wires are cooled, and meanwhile, the space utilization rate in the cable sheath is improved.

Description

Technical Field

[0001] This disclosure relates to the field of cable technology, and more specifically, to a cable and a charging gun. Background Technology

[0002] With the development of the electric vehicle industry and technology, electric vehicles have become an indispensable part of people's daily lives. Correspondingly, the demand for electric vehicle charging power is also constantly increasing.

[0003] In related technologies, when an electric vehicle charging gun is charging, the conductor wires inside the charging gun cable generate Joule heat when current passes through them. Currently, most charging gun cables use a method of arranging liquid cooling pipes and conductor wires in parallel so that the liquid cooling pipes can exchange heat with the conductor wires. However, this method has a small heat exchange area, which leads to poor heat dissipation performance of the charging gun, thus limiting the current carrying capacity of the cable. Utility Model Content

[0004] The purpose of this disclosure is to provide a cable and a charging gun to increase the heat dissipation area between the conductor wire and the liquid cooling pipe, thereby at least partially solving the above-mentioned technical problems.

[0005] To achieve the above objectives, a first aspect of this disclosure provides a cable, comprising: a cable sheath; a plurality of liquid cooling tubes disposed within the cable sheath for the flow of a cooling medium; and a conductor group disposed within the cable sheath, comprising at least two conductors of the same polarity, wherein each conductor is correspondingly disposed to one of the liquid cooling tubes and the conductors cover the outer side of the liquid cooling tubes; among the liquid cooling tubes covered by the at least two conductors of the same polarity, at least one liquid cooling tube is used for the inflow of the cooling medium, and at least one liquid cooling tube is used for the outflow of the cooling medium.

[0006] Optionally, the conductor wire includes a positive conductor wire and a negative conductor wire, and two of each of the positive and negative conductor wires are provided, with the two positive conductor wires and the two negative conductor wires being spaced apart within the cable sheath.

[0007] Optionally, on the cross-section of the cable, the center line connecting the two positive conductors and the two negative conductors can form a rectangle.

[0008] Optionally, the liquid cooling tube covered by the conductor wire is coaxially arranged with the conductor wire.

[0009] Optionally, the cable further includes a conductor insulation layer that covers the outer periphery of the conductor wire.

[0010] Optionally, the cable further includes a grounding wire, which is disposed within the cable sheath and spaced apart from the conductor wire.

[0011] A second aspect of this disclosure provides a charging gun including the aforementioned cable.

[0012] Optionally, the charging gun further includes a plug, terminal assemblies, a mounting base, and a cooling base. Two terminal assemblies are provided, both of which are connected to the mounting base and connected to the plug through the mounting base. One of the two terminal assemblies is connected to the positive conductor of the conductor wire, and the other is connected to the negative conductor of the conductor wire. The cooling base is provided in a one-to-one correspondence with the terminal assemblies and is connected to the liquid cooling pipe.

[0013] Optionally, the cooling base includes a cooling housing and a cooling channel disposed within the cooling housing, wherein the inlet and outlet of the cooling channel are both connected to the liquid cooling pipe.

[0014] Optionally, of the two positive conductor wires, the liquid cooling pipe covered by one of the positive conductor wires is connected to the inlet of the cooling channel of one of the cooling bases, and the liquid cooling pipe covered by the other positive conductor wire is connected to the outlet of the cooling channel of one of the cooling bases; of the two negative conductor wires, the liquid cooling pipe covered by one of the negative conductor wires is connected to the inlet of the cooling channel of the other cooling base; and the liquid cooling pipe covered by the other negative conductor wire is connected to the outlet of the cooling channel of the other cooling base.

[0015] Optionally, the terminal assembly includes a connector and a connecting seat connected to the connector. The connecting seat includes a first connecting surface connected to the conductor wire and a second connecting surface connected to the cooling seat. The first connecting surface is formed on the outward-facing side of the connecting seat, and the second connecting surface is formed on the inward-facing side of the connecting seat. A groove is provided on the second connecting surface, and the projection of the groove in a first direction covers at least a portion of the projection of the connection area between the conductor wire and the first connecting surface in the first direction.

[0016] Through the above technical solution, the cable disclosed herein includes at least two conductors of the same polarity, and the conductors are wrapped around the outside of the liquid cooling pipe. This increases the heat exchange area between the conductors and the liquid cooling pipe in the cable, thereby ensuring the heat dissipation effect of the liquid cooling pipe on the conductors and improving the current carrying capacity of the cable. In addition, the inflow and outflow of the cooling medium can be realized in the liquid cooling pipe wrapped by the conductors of the same polarity, eliminating the need for separate inlet or outlet pipes, thus improving the space utilization rate inside the cable sheath while cooling the conductors.

[0017] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic cross-sectional view of the cable provided in an embodiment of this disclosure;

[0020] Figure 2 This is an exploded view of the charging gun provided in an embodiment of this disclosure;

[0021] Figure 3 This is an assembly drawing of the charging gun provided in an embodiment of this disclosure;

[0022] Figure 4 This is an assembly diagram of the cable, terminal assembly, mounting base, and cooling base provided in the embodiments of this disclosure;

[0023] Figure 5 This is an assembly diagram of the terminal assembly and the mounting base after connection according to an embodiment of this disclosure;

[0024] Figure 6 This is an exploded view of the terminal assembly and cooling base provided in the embodiments of this disclosure;

[0025] Figure 7 This is a cross-sectional view of the terminal assembly and cable provided in the embodiments of this disclosure after connection;

[0026] Figure 8 This is a schematic diagram of the terminal assembly and cable connected according to an embodiment of this disclosure.

[0027] Explanation of reference numerals in the attached figures

[0028] 1-Cable sheath; 2-Liquid cooling pipe; 300-Conductor wire group; 3-Conductor wire; 31-Positive conductor wire; 32-Negative conductor wire; 4-Conductor insulation layer; 5-Grounding wire; 6-Plug; 7-Terminal assembly; 71-Connector; 72-Connecting seat; 721-First connecting surface; 722-Second connecting surface; 73-Groove; 8-Fixing seat; 9-Cooling seat; 91-Cooling housing; 92-Cooling channel; 10-Temperature sensor; A-First direction. Detailed Implementation

[0029] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0030] In this disclosure, unless otherwise stated, directional terms such as "up," "down," "left," and "right" refer to the cable's orientation during normal use of the charging gun. For details, please refer to... Figure 1 The directions shown in the illustrations are: "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance; "first direction" refers to the lateral direction of the charging gun during normal use. In addition, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0031] The cable and charging gun in the exemplary embodiments of this disclosure will now be described with reference to the accompanying drawings.

[0032] refer to Figures 1 to 8 As shown, in a first aspect, this disclosure provides a cable including a cable sheath 1, a plurality of liquid cooling pipes 2, and a conductor wire group 300. The plurality of liquid cooling pipes 2 are disposed within the cable sheath 1 for the flow of cooling medium. The conductor wire group 300 is disposed within the cable sheath 1 and includes at least two conductor wires 3 of the same polarity. The conductor wires 3 are arranged in a one-to-one correspondence with the liquid cooling pipes 2 and the conductor wires 3 cover the outside of the liquid cooling pipes 2. Among the liquid cooling pipes 2 covered by at least two conductor wires 3 of the same polarity, at least one liquid cooling pipe 2 is used for the inflow of cooling medium and at least one liquid cooling pipe 2 is used for the outflow of cooling medium.

[0033] In related technologies, cables generally include a positive conductor wire 31 and a negative conductor wire 32. The conductor wire group 300 of this disclosure may include a positive conductor wire 31 and at least two negative conductor wires 32, or it may include at least two positive conductor wires 31 and one negative conductor wire 32, or it may include at least two positive conductor wires 31 and at least two negative conductor wires 32. Therefore, the aforementioned at least two conductor wires 3 of the same polarity can be configured as positive conductor wires 31 and / or negative conductor wires 32 depending on the arrangement of the conductor wire group 300. Furthermore, since the conductor wires 3 are wrapped around the outer periphery of the liquid cooling pipe 2, the cable of this disclosure can increase conductivity. The heat exchange area between conductor wire 3 and liquid cooling pipe 2 ensures the heat dissipation effect of liquid cooling pipe 2 on conductor wire 3, thereby improving the current carrying capacity of the cable. In addition, the inflow and outflow of cooling medium can be realized in the liquid cooling pipe 2 covered by conductor wire 3 of the same polarity. For example, conductor wire group 300 includes two positive conductor wires 31 and one negative conductor wire 32. One of the positive conductor wires 31 is covered by a liquid cooling pipe 2 for liquid inlet, and the other positive conductor wire 31 is covered by a liquid cooling pipe 2 for liquid outlet. In this way, there is no need to set up separate liquid inlet or liquid outlet pipes, so as to improve the space utilization rate inside the cable sheath 1 while cooling conductor wire 3.

[0034] In addition, in some embodiments not shown, since multiple liquid cooling pipes 2 are provided, in addition to the liquid cooling pipes 2 covered by the conductor wire 3, some liquid cooling pipes 2 can be covered on the outside of the conductor wire 3 or arranged adjacent to the conductor wire 3, thereby further improving the heat dissipation effect of the liquid cooling pipes 2 on the conductor wire 3.

[0035] In embodiments of this disclosure, such as Figure 1 As shown, the conductor wire 3 may include a positive conductor wire 31 and a negative conductor wire 32, and two of each type are provided. The two positive conductor wires 31 and the two negative conductor wires 32 are spaced apart within the cable sheath 1, and the center line connecting the two positive conductor wires 31 and the two negative conductor wires 32 can form a rectangle on the cross-section of the cable. Specifically, the liquid cooling pipe 2 covering one of the positive conductor wires 31 and one of the negative conductor wires 32 can be configured as an inlet liquid cooling pipe, and the liquid cooling pipe 2 covering the other positive conductor wire 31 and the other negative conductor wire 32 can be configured as an outlet liquid cooling pipe. In this way, the cooling medium can circulate within the conductor wires 3 of the same polarity, thereby ensuring the cooling effect of the liquid cooling pipe 2 on the conductor wire 3 without the need to set up separate inlet or outlet pipes, so as to maximize the space utilization inside the cable sheath 1.

[0036] In addition, such as Figure 1As shown, two positive conductor wires 31 can be spaced apart in the vertical direction, and two negative conductor wires 32 can be spaced apart in the vertical direction. The positive conductor wires 31 and negative conductor wires 32 can also be spaced apart in the horizontal direction. When the positive conductor wires 31 and negative conductor wires 32 correspond one-to-one in the horizontal direction, the line connecting the centers of the four conductor wires 3 can form a rectangle so that the four conductor wires 3 are symmetrically arranged in the cable sheath 1. This can further improve the space utilization rate in the cable sheath 1, reduce the outer diameter of the cable sheath 1, and improve the user experience.

[0037] In some implementations, such as Figure 1 As shown, the liquid cooling pipe 2, which is covered by the conductor wire 3, can be coaxially arranged with the conductor wire 3. This maximizes the contact area between the liquid cooling pipe 2 and the conductor wire 3, thereby further improving the heat dissipation effect of the liquid cooling pipe 2 on the conductor wire 3.

[0038] In embodiments of this disclosure, such as Figure 1 As shown, the cable may also include a conductor insulation layer 4, which covers the outer periphery of the conductor wire 3. The conductor insulation layer 4 can play an insulating protection role, thereby improving the safety of the cable.

[0039] In addition, such as Figure 1 As shown, the cable may also include a grounding wire 5, which is disposed inside the cable sheath 1 and spaced apart from the conductor wire 3. The grounding wire 5 can quickly guide the leakage current that may be generated by the charging gun during operation to the ground, preventing electric shock accidents, and can also effectively eliminate the electromagnetic interference generated during operation, thereby improving the safety and service life of the charging gun.

[0040] In addition, such as Figure 1 As shown, the grounding wire 5 can be located below the conductor wire group 300, that is, near the bottom of the cable sheath 1, so that the grounding wire 5 can be easily connected to the grounding terminal of the charging gun.

[0041] In addition, the cable may also include a signal line disposed within the cable sheath 1 for connecting to a sensor signal inside the charging gun. For example, the sensor may be a temperature sensor for detecting the temperature of the charging gun.

[0042] A second aspect of this disclosure provides a charging gun, including the aforementioned cable. It should be noted that this charging gun possesses all the beneficial effects of the aforementioned cable, which will not be elaborated upon here.

[0043] In embodiments of this disclosure, such as Figures 2 to 8As shown, the charging gun may also include a plug 6, terminal assemblies 7, a mounting base 8, and a cooling base 9. Two terminal assemblies 7 may be provided, both connected to the mounting base 8 and then to the plug 6. One of the terminal assemblies 7 is connected to the positive conductor wire 31 of the conductor wire 3, and the other is connected to the negative conductor wire 32. The cooling base 9 is correspondingly arranged with each terminal assembly 7 and is connected to the liquid cooling pipe 2. Since the terminal assembly 7 is connected to the cooling base 9, and the cooling base 9 is connected to the liquid cooling pipe 2, the cooling medium can enter the cooling base 9 from one of the liquid cooling pipes 2 inside the cable sheath 1 and flow within the cooling base 9, thereby re-entering the cable sheath 1 from the other liquid cooling pipe 2 to dissipate heat from the conductor wire 3. During this process, the cooling medium located in the cooling base 9 can also dissipate heat from the terminal assembly 7, thus improving the current-carrying capacity of the charging gun.

[0044] In some implementations, such as Figures 6 to 8 As shown, the cooling base 9 may include a cooling housing 91 and a cooling channel 92 disposed within the cooling housing 91. The inlet and outlet of the cooling channel 92 are both connected to the liquid cooling pipe 2. Since the terminal assembly 7 is connected to the cooling base 9, the cooling medium flowing in the cooling channel 92 will continuously cool the terminal assembly 7, thereby ensuring that the terminal assembly 7 can be maintained within its normal operating temperature range, thus ensuring the normal operation of the charging gun. To increase the heat exchange area between the cooling channel 92 and the terminal assembly 7, the cooling channel 92 may be meandering within the cooling housing 91. For example, the cooling channel 92 may extend in an M-shape within the cooling housing 91.

[0045] The cooling housing 91 can be made of alumina, which has excellent insulation and thermal conductivity. Its insulation properties can ensure the electro-hydraulic insulation between the cooling medium inside and the terminal assembly 7, ensuring the safety of the charging gun during use. Its thermal conductivity can improve the heat exchange efficiency between the cooling base 9 and the terminal assembly 7.

[0046] Specifically, such as Figures 2 to 8As shown, of the two positive conductor wires 31, the liquid cooling pipe 2 covered by one positive conductor wire 31 is connected to the inlet of the cooling channel 92 of one cooling base 9, and the liquid cooling pipe 2 covered by the other positive conductor wire 31 is connected to the outlet of the cooling channel 92 of one cooling base 9; of the two negative conductor wires 32, the liquid cooling pipe 2 covered by one negative conductor wire 32 is connected to the inlet of the cooling channel 92 of the other cooling base 9, and the liquid cooling pipe 2 covered by the other negative conductor wire 32 is connected to the outlet of the cooling channel 92 of the other cooling base 9. In this way, the cooling medium can circulate in the liquid cooling pipe 2 of the conductor wires 3 with the same polarity. That is, in the two conductor wires 3 with the same polarity, the cooling medium enters the cooling channel 92 from the inlet of the liquid cooling pipe 2 of one conductor wire 3 through the cooling channel 92, flows along the cooling channel 92, and finally enters the liquid cooling pipe 2 of the other conductor wire 3 from the outlet of the cooling channel 92. In this way, the cooling medium can effectively dissipate heat from the conductor wires 3 with the same polarity and the terminal assembly 7.

[0047] In embodiments of this disclosure, such as Figures 2 to 8 As shown, the terminal assembly 7 may include a connector 71 and a connecting seat 72 connected to the connector 71. The connecting seat 72 includes a first connecting surface 721 connected to the conductor wire 3 and a second connecting surface 722 connected to the cooling seat 9. The first connecting surface 721 is formed on the outward side of the connecting seat 72, and the second connecting surface 722 is formed on the inward side of the connecting seat 72. A groove 73 is provided on the second connecting surface 722. The projection of the groove 73 in the first direction A covers at least a portion of the projection of the connection area between the conductor wire 3 and the first connecting surface 721 in the first direction A. The conductor wire 3 can be connected to the terminal assembly 7 by ultrasonic welding. However, ultrasonic welding can cause marks on the second connecting surface 722, affecting the fit between the second connecting surface 722 and the cooling seat 9, thereby reducing the cooling effect of the cooling seat 9 on the terminal assembly 7. Therefore, a groove 73 is provided in the area of ​​the second connecting surface 722 where marks are easily formed, so that the marks are located in the groove 73. After the connecting seat 72 is connected to the cooling seat 9, the operator can fill the groove 73 with thermal grease, thereby increasing the contact area between the connecting seat 72 and the cooling seat 9 and improving the heat dissipation effect of the cooling seat 9 on the terminal assembly 7.

[0048] In order to improve the safety of the charging gun, such as Figure 2 and Figure 5As shown, a temperature sensor 10 can be provided at the connector 71. The temperature sensor 10 is close to the heat source and can detect the temperature of the terminal assembly 7. When it detects that the temperature of the terminal assembly 7 exceeds a preset value, it causes the charging gun to perform a preventive operation. For example, the temperature sensor 10 can send the detected temperature signal to the controller. When the controller finds that the temperature of the terminal assembly 7 exceeds the preset value, the controller can use a method such as power off to ensure the safe use of the charging gun and avoid the occurrence of subsequent safety accidents.

[0049] In addition, such as Figure 5 As shown, a sealing ring and a fixing groove can also be provided at the connector 71 to ensure a tight and sealed connection between the terminal assembly 7 and the plug 6.

[0050] In summary, this disclosure exemplarily illustrates the working principle of the cable and the charging gun.

[0051] The cable disclosed herein has two positive conductor wires 31 and two negative conductor wires 32. The two positive conductor wires 31 are respectively wrapped around the outside of the liquid cooling pipe 2, and one of the liquid cooling pipes 2 is used to realize the inflow of the cooling medium and the other liquid cooling pipe 2 is used to realize the outflow of the cooling medium. The two negative conductor wires 32 are arranged in the same way as the liquid cooling pipe 2, that is, the cooling medium can circulate in the conductor wires 3 of the same polarity. Thus, the cable of this disclosure can increase the heat exchange area between the conductor wire 3 and the liquid cooling pipe 2 without the need to set up separate pipes for the inlet or outlet of the cooling medium. Based on this, the cable of this disclosure can improve the heat dissipation effect of the liquid cooling pipe 2 on the conductor wire 3 and improve the space utilization of the cable sheath 1.

[0052] The cooling channel 92 of the cooling base 9 of the charging gun disclosed herein has an M-shaped structure, which can maximize the heat dissipation area between the cooling base 9 and the terminal assembly 7, ensuring that the operating temperature of the terminal assembly 7 is maintained within the normal range. In addition, a groove 73 for filling thermal grease is provided on the second connecting surface 722, which can further increase the heat exchange area between the terminal assembly 7 and the cooling base 9 and improve the heat dissipation effect.

[0053] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0055] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A cable, characterized in that, include: Cable sheath; Multiple liquid cooling pipes are installed inside the cable sheath for the flow of cooling medium; as well as A conductor wire group is disposed inside the cable sheath and includes at least two conductor wires with the same polarity. The conductor wires are disposed one-to-one with the liquid cooling pipes and the conductor wires cover the outside of the liquid cooling pipes. In the liquid cooling tubes covered by at least two conductors of the same polarity, at least one liquid cooling tube is used for the inflow of the cooling medium, and at least one liquid cooling tube is used for the outflow of the cooling medium.

2. The cable according to claim 1, characterized in that, The conductor wires include a positive conductor wire and a negative conductor wire, and there are two of each of the positive and negative conductor wires. The two positive conductor wires and the two negative conductor wires are spaced apart inside the cable sheath.

3. The cable according to claim 2, characterized in that, On the cross-section of the cable, the line connecting the centers of the two positive conductors and the two negative conductors can form a rectangle.

4. The cable according to claim 1, characterized in that, The liquid cooling tube, which is covered by the conductor wire, is coaxially arranged with the conductor wire.

5. The cable according to claim 1, characterized in that, The cable also includes a conductor insulation layer that covers the outer periphery of the conductor wire.

6. The cable according to any one of claims 1-5, characterized in that, The cable also includes a grounding wire, which is disposed inside the cable sheath and spaced apart from the conductor wire.

7. A charging gun, characterized in that, The cable included in any one of claims 1-6.

8. The charging gun according to claim 7, characterized in that, The charging gun also includes a plug, terminal assemblies, a mounting base, and a cooling base. There are two terminal assemblies, both of which are connected to the mounting base and connected to the plug through the mounting base. One of the two terminal assemblies is connected to the positive conductor of the conductor wire, and the other is connected to the negative conductor of the conductor wire. The cooling base is arranged in a one-to-one correspondence with the terminal assemblies and is connected to the liquid cooling pipe.

9. The charging gun according to claim 8, characterized in that, The cooling base includes a cooling housing and a cooling channel disposed within the cooling housing. The inlet and outlet of the cooling channel are both connected to the liquid cooling pipe.

10. The charging gun according to claim 9, characterized in that, Of the two positive conductor wires, the liquid cooling pipe covered by one of the positive conductor wires is connected to the inlet of the cooling channel of one of the cooling bases, and the liquid cooling pipe covered by the other positive conductor wire is connected to the outlet of the cooling channel of one of the cooling bases. Of the two negative conductor wires, the liquid cooling pipe covered by one of the negative conductor wires is connected to the inlet of the cooling channel of the other cooling base; the liquid cooling pipe covered by the other negative conductor wire is connected to the outlet of the cooling channel of the other cooling base.

11. The charging gun according to claim 8, characterized in that, The terminal assembly includes a connector and a connector base connected to the connector, the connector base including a first connecting surface connected to the conductor wire and a second connecting surface connected to the cooling base; The first connecting surface is formed on the outward side of the connector, and the second connecting surface is formed on the inward side of the connector. A groove is provided on the second connecting surface, and the projection of the groove in a first direction covers at least a portion of the projection of the connection area between the conductor wire and the first connecting surface in the first direction.

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