Liquid cooling cables and charging equipment

Abstract

The present invention relates to a liquid-cooled cable and charging equipment. The liquid-cooled cable includes a cable body, at least two liquid inlet pipe groups and at least two liquid outlet pipe groups. The two ends of the cable body are respectively used to connect to a charging pile and a charging gun. The cable body includes at least two cable segments connected end to end in sequence. Each cable segment includes a liquid cooling pipe group and a conductor group corresponding to the liquid cooling pipe group. Every two adjacent conductor groups are electrically connected. The liquid inlet pipe group is arranged in a one-to-one correspondence with the cable segment. One end of the liquid inlet pipe group is used to communicate with the charging pile, and the other end is used to communicate with one end of the corresponding liquid cooling pipe group. The liquid outlet pipe group is arranged in a one-to-one correspondence with the cable segment. One end of the liquid outlet pipe group is used to communicate with the charging pile, and the other end is used to communicate with an end of the corresponding liquid cooling pipe group away from the liquid inlet pipe group. Each liquid cooling pipe group is independently connected to a liquid cooling device through the corresponding liquid inlet pipe group and liquid outlet pipe group, and can evenly dissipate heat from the conductor group to reduce the temperature difference of the conductor groups upstream and downstream of the liquid cooling cable.

Description

Technical Field

[0001] The present invention relates to the field of cable technology, in particular to a liquid cooling cable and a charging device. Background Art

[0002] Cables of charging devices such as charging guns usually use liquid cooling to dissipate heat and cool the conductors inside the cables.

[0003] In existing liquid-cooled cables, the coolant usually flows into the liquid-cooling tube from one end of the liquid-cooling cable and flows out of the liquid-cooling tube from the other end of the liquid-cooling cable. The coolant temperature in the liquid-cooling tube increases as it moves downstream, resulting in uneven heat dissipation of the conductor in the liquid-cooled cable by the coolant. The temperature difference between the conductors upstream and downstream of the liquid-cooled cable is large, and the working power and cable length of the liquid-cooled cable are also limited. Summary of the invention

[0004] Based on this, it is necessary to provide a liquid cooling cable and charging equipment to address the above problems, so as to ensure uniform heat dissipation of the conductors in the liquid cooling cable.

[0005] The present invention first provides a liquid-cooled cable, comprising: a cable body, both ends of which are respectively used to connect to a charging pile and a charging gun, the cable body comprising at least two cable segments connected end to end in sequence, each of the cable segments comprising a liquid cooling tube group and a conductor group corresponding to the liquid cooling tube group, and every two adjacent conductor groups are electrically connected; at least two liquid inlet tube groups are arranged in a one-to-one correspondence with the cable segments, one end of the liquid inlet tube group is used to communicate with the charging pile, and the other end is used to communicate with one end of the corresponding liquid cooling tube group; and at least two liquid outlet tube groups are arranged in a one-to-one correspondence with the cable segments, one end of the liquid outlet tube group is used to communicate with the charging pile, and the other end is used to communicate with an end of the corresponding liquid cooling tube group away from the liquid inlet tube group.

[0006] In the above-mentioned liquid-cooled cable, the cooling liquid in the liquid cooling device can be diverted to each liquid inlet pipe group, and flow to the liquid cooling pipe group of the corresponding cable section through each liquid inlet pipe group, the cooling liquid in each liquid cooling pipe group flows to the corresponding liquid outlet pipe group, and flows back to the liquid cooling device through each liquid outlet pipe group, so as to realize cooling liquid circulation, and the cooling liquid in each liquid cooling pipe group can take away the heat generated by the corresponding conductor group; since each liquid cooling pipe group is independently connected to the liquid cooling device through the corresponding liquid inlet pipe group and liquid outlet pipe group, the cooling liquid in each liquid cooling pipe group can uniformly dissipate heat to the corresponding conductor group, so as to reduce the temperature difference between the conductor groups upstream and downstream of the liquid cooling cable, thereby effectively reducing the maximum temperature of the liquid cooling cable, so that the liquid cooling cable can withstand a larger working current, and the length of the liquid cooling cable can also be extended.

[0007] In one embodiment, the liquid cooling cable also includes a first confluence pipe, one end of which is used to connect with the charging pile, and one end of the liquid inlet pipe group away from the liquid cooling pipe group is connected to the first confluence pipe; and / or, the liquid cooling cable also includes a second confluence pipe, one end of the second confluence pipe is used to connect with the charging pile, and one end of the liquid outlet pipe group away from the liquid cooling pipe group is connected to the second confluence pipe.

[0008] Such an arrangement ensures that the end of each liquid inlet pipe group and liquid outlet pipe group away from the liquid cooling pipe group does not need to extend to the charging pile, thereby reducing the number of pipes extending along the length direction in the liquid cooling cable, reducing the diameter of the liquid cooling cable, and increasing the diameter of the liquid cooling pipe group.

[0009] In one of the embodiments, the liquid cooling cable further includes at least one adapter, and every two adjacent cable segments are connected via one of the adapters.

[0010] With such arrangement, the adapter can easily connect two adjacent cable segments, thereby ensuring the reliability and sealing of the connection between the two cable segments.

[0011] In one embodiment, the adapter includes a first adapter, and one end of the liquid inlet pipe group away from the liquid cooling pipe group is connected to the first confluence pipe through the first adapter; and / or, the adapter includes a second adapter, and one end of the liquid outlet pipe group away from the liquid cooling pipe group is connected to the second confluence pipe through the second adapter.

[0012] With such an arrangement, the first adapter can conveniently connect and link the first confluence pipe and the corresponding liquid inlet pipe group, thereby ensuring the reliability and sealing of the connection between the first confluence pipe and the liquid inlet pipe group; the second adapter can conveniently connect and link the second confluence pipe and the corresponding liquid outlet pipe group, thereby ensuring the reliability and sealing of the connection between the second confluence pipe and the liquid outlet pipe group.

[0013] In one embodiment, the adapter comprises a third adapter, and every two adjacent conductor groups are electrically connected via the third adapter.

[0014] With such arrangement, the third adapter can ensure the reliability of the electrical connection between the two conductor groups.

[0015] In one of the embodiments, each of the liquid-cooling tube groups includes two liquid-cooling tubes arranged side by side, and each of the conductor groups includes two conductors corresponding one-to-one to the liquid-cooling tubes.

[0016] With such an arrangement, the coolant in the two liquid cooling tubes cools the two conductors respectively, so as to ensure the heat dissipation effect of the liquid cooling cable.

[0017] In one embodiment, each of the liquid inlet pipe groups includes two first liquid inlet pipes, one end of the two first liquid inlet pipes is used to connect with the charging pile, and the other end of the two first liquid inlet pipes is respectively connected with the two liquid cooling pipes; and / or, each of the liquid outlet pipe groups includes two first liquid outlet pipes, one end of the two first liquid outlet pipes is used to connect with the charging pile, and the other end of the two first liquid outlet pipes is respectively connected with the two liquid cooling pipes.

[0018] With such arrangement, the two liquid cooling tubes of the cable segment are independently connected to the liquid cooling device through the two first liquid inlet tubes, and the coolant in the two liquid cooling tubes can evenly dissipate heat from the corresponding conductors.

[0019] In one embodiment, the conductor is inserted into the corresponding liquid cooling tube; or, the conductor is sleeved outside the corresponding liquid cooling tube.

[0020] This arrangement enables direct contact heat dissipation or indirect liquid cooling between the conductor and the coolant.

[0021] In one of the embodiments, the number of the cable segments is two, and the liquid cooling cable further includes a transition piece, and the two cable segments are connected via the transition piece.

[0022] Such an arrangement can ensure uniform heat dissipation of the conductor in the liquid cooling cable while avoiding increasing the diameter of the liquid cooling cable or reducing the diameter of the liquid cooling tube group.

[0023] The present invention also provides a charging device, including a charging pile, a charging gun and the liquid-cooling cable as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the internal pipeline of the liquid cooling cable according to the first embodiment of the present invention;

[0026] Figure 2 The present invention provides Figure 1 Schematic diagram of the coolant flow direction of the liquid cooling cable;

[0027] Figure 3 This is a schematic diagram of the internal pipeline of a liquid cooling cable according to a second embodiment of the present invention;

[0028] Figure 4 The present invention provides Figure 3 Schematic diagram of the coolant flow direction of the liquid cooling cable;

[0029] Figure 5 This is a schematic diagram of the internal pipeline of a liquid cooling cable according to a third embodiment of the present invention;

[0030] Figure 6 The present invention provides Figure 5 Schematic diagram of the coolant flow direction of the liquid cooling cable;

[0031] Figure 7 This is a schematic diagram of the internal pipeline of a liquid cooling cable according to a fourth embodiment of the present invention;

[0032] Figure 8 The present invention provides Figure 7 Schematic diagram of the coolant flow direction of the liquid cooling cable;

[0033] Fig. 9 A partial cross-sectional schematic diagram of a liquid cooling cable according to an embodiment of the present invention;

[0034] Fig.10 The figure is a cross-sectional schematic diagram of a liquid cooling cable according to another embodiment of the present invention.

[0035] Figure numerals: 1, cable body; 11, cable segment; 111, liquid cooling tube group; 112, conductor group; 2, liquid inlet tube group; 21, first liquid inlet tube; 22, second liquid inlet tube; 3, liquid outlet tube group; 31, first liquid outlet tube; 32, second liquid outlet tube; 4, first confluence tube; 5, second confluence tube; 6, adapter; 61, first adapter; 62, second adapter; 63, third adapter; 200, charging pile; 201, liquid cooling device; 300, charging gun. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0037] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0041] The cables of charging equipment such as charging guns usually use liquid cooling to dissipate heat and cool the conductors in the cables. In the processing of existing liquid-cooled cables, the power wires, liquid-cooling tubes, and signal lines are first arranged in parallel and twisted into cables. The length of the cables can reach tens of meters, and the cross-sections are consistent at all places; then the cables are cut according to the required length, and the two ends of the cut cables are connected to the charging pile and the charging gun respectively. During the operation of the liquid-cooled cable, the coolant usually flows into the liquid-cooling tube from one end of the liquid-cooled cable and flows out of the liquid-cooling tube from the other end of the liquid-cooled cable. The further downstream, the higher the temperature of the coolant in the liquid-cooling tube, which causes the coolant to dissipate heat unevenly to the conductors in the liquid-cooled cable, and the temperature difference between the conductors upstream and downstream of the liquid-cooled cable is large. In addition, since the larger the working current passing through the conductor and the longer the cable, the greater the temperature difference between the conductors upstream and downstream of the liquid-cooled cable, when the coolant dissipates heat unevenly to the conductors in the liquid-cooled cable, the working power and cable length of the liquid-cooled cable will be limited.

[0042] In order to solve the above problems, Figures 1 to 10 As shown, the present invention first provides a liquid cooling cable to ensure uniform heat dissipation of the conductor in the liquid cooling cable.

[0043] like Figure 1 to Figure 2 As shown, specifically, the liquid-cooled cable includes a cable body 1, at least two liquid inlet pipe groups 2 and at least two liquid outlet pipe groups 3, wherein: the two ends of the cable body 1 are respectively used to connect to the charging pile 200 and the charging gun 300, the cable body 1 includes at least two cable segments 11 connected end to end in sequence, each cable segment 11 includes a liquid cooling pipe group 111 and a conductor group 112 corresponding to the liquid cooling pipe group 111, and every two adjacent conductor groups 112 are electrically connected; the liquid inlet pipe group 2 is arranged one-to-one with the cable segment 11, one end of the liquid inlet pipe group 2 is used to communicate with the charging pile 200, and the other end is used to communicate with one end of the corresponding liquid cooling pipe group 111; the liquid outlet pipe group 3 is arranged one-to-one with the cable segment 11, one end of the liquid outlet pipe group 3 is used to communicate with the charging pile 200, and the other end is used to communicate with an end of the corresponding liquid cooling pipe group 111 away from the liquid inlet pipe group 2.

[0044] Among them, each cable segment 11 is connected end to end to form a cable body 1 of the required length, and the cable segments 11 located at the beginning and end of the cable body 1 are respectively used to connect with the charging pile 200 and the charging gun 300. The conductor groups 112 of every two adjacent cable segments 11 are electrically connected, and the conductor groups 112 of the cable segments 11 located at the beginning and end of the cable body 1 are respectively used to electrically connect with the power supply device (not shown) in the charging pile 200 and the terminals of the charging gun 300, so as to conduct the power supply device of the charging pile 200 with the terminals of the charging gun 300 through each conductor group 112. One end of each liquid inlet pipe group 2 is used to communicate with the liquid outlet of the liquid cooling device 201 in the charging pile 200, and one end of each liquid outlet pipe group 3 is used to communicate with the liquid return port of the liquid cooling device 201 in the charging pile 200.

[0045] In the liquid-cooled cable provided in the embodiment of the present invention, during operation, the cooling liquid in the liquid cooling device 201 can be diverted to each liquid inlet pipe group 2, and flow to the liquid cooling pipe group 111 of the corresponding cable segment 11 through each liquid inlet pipe group 2, and the cooling liquid in each liquid cooling pipe group 111 flows to the corresponding liquid outlet pipe group 3, and flows back to the liquid cooling device 201 through each liquid outlet pipe group 3, so as to realize cooling liquid circulation, and the cooling liquid in each liquid cooling pipe group 111 can take away the heat generated by the corresponding conductor group 112; since each liquid cooling pipe group 111 is independently connected to the liquid cooling device 201 through the corresponding liquid inlet pipe group 2 and liquid outlet pipe group 3, the cooling liquid in each liquid cooling pipe group 111 can uniformly dissipate heat to the corresponding conductor group 112, so as to reduce the temperature difference between the conductor groups 112 upstream and downstream of the liquid cooling cable, thereby effectively reducing the maximum temperature of the liquid cooling cable, so that the liquid cooling cable can withstand a larger working current, and the length of the liquid cooling cable can also be extended.

[0046] like Figure 1 to Figure 2 As shown, since the ends of each liquid inlet pipe group 2 and liquid outlet pipe group 3 away from the liquid cooling pipe group 111 need to extend to the charging pile 200 before they can be connected to the liquid cooling device 201, it will lead to a large number of pipes extending in the length direction in the liquid cooling cable, the diameter of the liquid cooling cable increases, and the diameter of the liquid cooling pipe group 111 decreases, especially the end of the liquid cooling cable close to the charging pile 200. Therefore, in one embodiment, the liquid cooling cable also includes a first confluence pipe 4, one end of the first confluence pipe 4 is used to communicate with the charging pile 200, and the end of the liquid inlet pipe group 2 away from the liquid cooling pipe group 111 is connected to the first confluence pipe 4. The liquid cooling cable also includes a second confluence pipe 5, one end of the second confluence pipe 5 is used to communicate with the charging pile 200, and the end of the liquid outlet pipe group 3 away from the liquid cooling pipe group 111 is connected to the second confluence pipe 5. The coolant in the liquid cooling device 201 flows into the first confluence pipe 4, and the coolant in the first confluence pipe 4 is divided into each liquid inlet pipe group 2, and flows into the liquid cooling pipe group 111 of the corresponding cable segment 11 through each liquid inlet pipe group 2, and the coolant in each liquid cooling pipe group 111 flows into the corresponding liquid outlet pipe group 3, and merges into the second confluence pipe 5 through each liquid outlet pipe group 3, and the coolant in the second confluence pipe 5 flows back to the liquid cooling device 201, realizing the circulation of the coolant. In this way, the end of each liquid inlet pipe group 2 and liquid outlet pipe group 3 away from the liquid cooling pipe group 111 does not need to extend to the charging pile 200, so as to shorten the length of the liquid inlet pipe group 2 and the liquid outlet pipe group 3, thereby reducing the number of pipelines extending in the length direction in the liquid cooling cable, reducing the diameter of the liquid cooling cable, and increasing the diameter of the liquid cooling pipe group 111.

[0047] Among them, when the number of cable segments 11 is large, the number of first confluence pipes 4 can be one, two or more, and the liquid inlet pipe groups 2 corresponding to some of the cable segments 11 are connected to one of the first confluence pipes 4, and the liquid inlet pipe groups 2 corresponding to the remaining cable segments 11 are connected to another of the first confluence pipes 4. Similarly, when the number of cable segments 11 is large, the number of second confluence pipes 5 can also be one, two or more, and the liquid outlet pipe groups 3 corresponding to some of the cable segments 11 are connected to one of the second confluence pipes 5, and the liquid outlet pipe groups 3 corresponding to the remaining cable segments 11 are connected to another of the second confluence pipes 5.

[0048] Of course, in other embodiments, the liquid cooling cable may also only include the first confluence pipe 4, and each liquid outlet pipe group 3 extends from one end of the liquid cooling pipe group 111 to the charging pile 200 and is connected to the liquid cooling device 201; or, the liquid cooling cable may also only include the second confluence pipe 5, and each liquid inlet pipe group 2 extends from one end of the liquid cooling pipe group 111 to the charging pile 200 and is connected to the liquid cooling device 201.

[0049] like Figure 1 to Figure 2 As shown, the liquid-cooled cable also includes at least one adapter 6, and every two adjacent cable segments 11 are connected by an adapter 6. The connection between the adapter 6 and the cable segment 11 is waterproof and sealed by a sealing structure. The adapter 6 can facilitate the connection of two adjacent cable segments 11, ensure the reliability and sealing of the connection between the two cable segments 11, avoid the leakage of the coolant in the liquid-cooling pipe group 111 at the connection, and also ensure the reliability of the electrical connection between the two conductor groups 112, avoid the occurrence of short circuit, open circuit or leakage. Among them, when the number of cable segments 11 is n, the number of adapters 6 is n-1, and n is a positive integer greater than 1. Specifically, when the number of cable segments 11 is two, the number of adapters 6 is one; when the number of cable segments 11 is three, the number of adapters 6 is two; when the number of cable segments 11 is four, the number of adapters 6 is three.

[0050] like Figure 3 , Figure 5 and Figure 7 As shown, the adapter 6 includes a first adapter 61, and one end of the liquid inlet pipe group 2 away from the liquid cooling pipe group 111 is connected to the first confluence pipe 4 through the first adapter 61. All the coolant in the first confluence pipe 4 flows into the corresponding liquid inlet pipe group 2 through the first adapter 61; or, part of the coolant in the first confluence pipe 4 flows into the corresponding liquid inlet pipe group 2 through the first adapter 61, and the rest of the coolant continues to flow along the first confluence pipe 4. The first adapter 61 can easily connect and connect the first confluence pipe 4 and the corresponding liquid inlet pipe group 2, ensure the reliability and sealing of the connection between the first confluence pipe 4 and the liquid inlet pipe group 2, and avoid leakage of the coolant in the first confluence pipe 4 and the liquid inlet pipe group 2 at the connection.

[0051] like Figure 1 , Figure 5 and Figure 7 As shown, the adapter 6 also includes a second adapter 62, and one end of the liquid outlet pipe group 3 away from the liquid cooling pipe group 111 is connected to the second confluence pipe 5 through the second adapter 62. The coolant in the liquid outlet pipe group 3 can flow into the second confluence pipe 5 through the corresponding second adapter 62. The second adapter 62 can easily connect and connect the second confluence pipe 5 and the corresponding liquid outlet pipe group 3, ensure the reliability and sealing of the connection between the second confluence pipe 5 and the liquid outlet pipe group 3, and avoid leakage of the coolant in the second confluence pipe 5 and the liquid outlet pipe group 3 at the connection.

[0052] like Figure 2 As shown, each liquid cooling tube group 111 includes two liquid cooling tubes arranged side by side, and each conductor group 112 includes two conductors corresponding to the liquid cooling tubes. The two conductors are respectively used to electrically connect to the DC+ terminal and DC- terminal of the charging pile power supply to form a charging circuit. The coolant in the two liquid cooling tubes cools the two conductors respectively to ensure the heat dissipation effect of the liquid cooling cable.

[0053] like Fig. 9 As shown, in one embodiment, the conductor is inserted into the corresponding liquid cooling tube, and the conductor is immersed in the cooling liquid in the liquid cooling tube to achieve direct contact heat dissipation between the conductor and the cooling liquid. Fig.10 As shown, in another embodiment, the conductor is sleeved outside the corresponding liquid cooling tube, and the conductor does not directly contact the coolant in the liquid cooling tube, so as to achieve indirect liquid cooling of the conductor and the coolant. And when the conductor is sleeved outside the liquid cooling tube, the conductor is also wrapped with an insulating layer to avoid short circuit, open circuit or leakage caused by contact between the conductors or contact with other structures.

[0054] like Figure 1 and Figure 3 As shown, each liquid inlet pipe group 2 includes two first liquid inlet pipes 21, one end of each of the two first liquid inlet pipes 21 is used to communicate with the charging pile 200, and the other end of the two first liquid inlet pipes 21 is respectively connected to two liquid cooling pipes. Figure 1 As shown, the ends of the two first liquid inlet pipes 21 away from the liquid cooling pipe can be directly connected to the liquid cooling device 201; or Figure 3 As shown, one end of the two first liquid inlet pipes 21 away from the liquid cooling pipe can also be connected to the first confluence pipe 4. Since the two liquid cooling pipes of the cable segment 11 are independently connected to the liquid cooling device 201 through the two first liquid inlet pipes 21, the coolant in the two liquid cooling pipes can evenly dissipate heat for the corresponding conductors, thereby further improving the heat dissipation effect of the liquid-cooled cable.

[0055] like Figure 1 and Figure 3As shown, each liquid outlet pipe group 3 includes two first liquid outlet pipes 31, one end of each of the two first liquid outlet pipes 31 is used to communicate with the charging pile 200, and the other end of the two first liquid outlet pipes 31 is respectively connected to two liquid cooling pipes. Figure 3 As shown, the ends of the two first liquid outlet pipes 31 away from the liquid cooling pipe can be directly connected to the liquid cooling device 201; or Figure 1 As shown, one end of the two first liquid outlet pipes 31 away from the liquid cooling pipe can also be connected to the second converging pipe 5.

[0056] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the adapter 6 also includes a third adapter 63, and every two adjacent conductor groups 112 are electrically connected through the third adapter 63. The third adapter 63 can ensure the reliability of the electrical connection between the two conductor groups 112 to avoid short circuit, open circuit or leakage. Figure 5 and Figure 7 As shown, the third adapter 63 can also ensure that the coolant in the first liquid inlet pipe 21 and the first liquid outlet pipe 31 at the connection of the two conductor groups 112 will not leak.

[0057] like Figure 1 As shown, each liquid outlet pipe group 3 may also include a second liquid outlet pipe 32, one end of the second liquid outlet pipe 32 is connected to the second confluence pipe 5 through a second adapter 62, and the other end of the second liquid outlet pipe 32 is connected to the two first liquid outlet pipes 31 through a third adapter 63. The third adapter 63 can easily connect and connect the second liquid outlet pipe 32 and the first liquid outlet pipe 31, ensure the reliability and sealing of the connection between the second liquid outlet pipe 32 and the first liquid outlet pipe 31, and avoid leakage of the coolant in the second liquid outlet pipe 32 and the first liquid outlet pipe 31 at the connection. Figure 3 As shown, each liquid inlet pipe group 2 may further include a second liquid inlet pipe 22, one end of the second liquid inlet pipe 22 is connected to the first confluence pipe 4 through a second adapter 62, and the other end of the second liquid inlet pipe 22 is connected to the two first liquid inlet pipes 21 through a third adapter 63. The third adapter 63 can easily connect and connect the second liquid inlet pipe 22 and the first liquid inlet pipe 21, ensure the reliability and sealing of the connection between the second liquid inlet pipe 22 and the first liquid inlet pipe 21, and avoid leakage of the coolant in the second liquid inlet pipe 22 and the first liquid inlet pipe 21 at the connection.

[0058] like Figure 1 to Figure 2As shown, when the number of cable segments 11 is large, the number of pipes extending in the length direction of the liquid cooling cable may be large, the diameter of the liquid cooling cable increases, and the diameter of the liquid cooling tube group 111 decreases, especially at the end of the liquid cooling cable close to the charging pile 200. Therefore, the number of cable segments 11 is preferably two, the number of adapters 6 is one, and the two cable segments 11 are connected by the adapter 6. The two cable segments 11 can reduce the path length of the coolant flowing in the liquid cooling tube group 111 by half, so as to ensure uniform heat dissipation of the conductor in the liquid cooling cable while avoiding increasing the diameter of the liquid cooling cable or reducing the diameter of the liquid cooling tube group 111.

[0059] like Figures 1 to 8 As shown, the following is an example of a liquid cooling cable including two cable segments 11 and an adapter 6. The cable segment 11 connected to the charging pile 200 is defined as the first cable segment, and the cable segment 11 connected to the charging gun 300 is defined as the second cable segment. The end of the first cable segment away from the charging pile 200 and the end of the second cable segment away from the charging gun 300 are connected through the adapter 6.

[0060] like Figure 1 to Figure 2 As shown, in one embodiment, the coolant in the liquid cooling device 201 flows to the two liquid cooling tubes of the first cable segment through the two first liquid inlet pipes 21 in the charging pile 200, and at the same time, the coolant in the liquid cooling device 201 also flows to the first confluence pipe 4, and the coolant in the first confluence pipe 4 is divided into the two first liquid inlet pipes 21 in the charging gun 300, and flows to the two liquid cooling tubes of the second cable segment through the two first liquid inlet pipes 21; the coolant in the two liquid cooling tubes of the first cable segment and the two liquid cooling tubes of the second cable segment flows to the second confluence pipe 5 through the four first liquid outlet pipes 31 in the adapter 6, and the coolant in the second confluence pipe 5 flows back to the liquid cooling device 201. At this time, the first cable segment includes four pipelines, and the second cable segment includes three pipelines.

[0061] like Figure 3 to Figure 4 As shown, in one embodiment, contrary to the above-mentioned embodiment, the coolant in the liquid cooling device 201 flows into the first confluence pipe 4, the coolant in the first confluence pipe 4 is divided into four first liquid inlet pipes 21 in the adapter 6, and the coolant in the four first liquid inlet pipes 21 flows into the two liquid cooling pipes of the first cable segment and the two liquid cooling pipes of the second cable segment respectively; the coolant in the two liquid cooling pipes of the first cable pipe flows back to the liquid cooling device 201 through the two first liquid outlet pipes 31 in the charging pile 200, and the coolant in the two liquid cooling pipes of the second cable pipe flows to the second confluence pipe 5 through the two first liquid outlet pipes 31 in the charging gun 300, and the coolant in the second confluence pipe 5 flows back to the liquid cooling device 201.

[0062] like Figures 5 and 6As shown, in one embodiment, the coolant in the liquid cooling device 201 flows into the first confluence pipe 4, part of the coolant in the first confluence pipe 4 is diverted to the two first liquid inlet pipes 21 in the adapter 6, and the coolant in the two first liquid inlet pipes 21 flows to the two liquid cooling pipes of the first cable segment respectively, and the other coolant in the first confluence pipe 4 is diverted to the two first liquid inlet pipes 21 in the charging gun 300, and the coolant in the two first liquid inlet pipes 21 flows to the two liquid cooling pipes of the second cable segment respectively; the coolant in the two liquid cooling pipes of the first cable pipe flows back to the liquid cooling device 201 through the two first liquid outlet pipes 31 in the charging pile 200, and the coolant in the two liquid cooling pipes of the second cable pipe flows to the second confluence pipe 5 through the two first liquid outlet pipes 31 in the adapter 6, and the coolant in the second confluence pipe 5 flows back to the liquid cooling device 201.

[0063] like Figures 7 and 8 As shown, in one embodiment, contrary to the above-mentioned embodiment, the coolant in the liquid cooling device 201 flows to the two liquid cooling tubes of the first cable segment through the two first liquid inlet pipes 21 in the charging pile 200, and at the same time, the coolant in the liquid cooling device 201 also flows to the first junction pipe 4, and the coolant in the first junction pipe 4 is divided into the two first liquid inlet pipes 21 in the adapter 6, and flows to the two liquid cooling tubes of the second cable segment through the two first liquid inlet pipes 21; the two liquid cooling tubes of the first cable segment flow to the second junction pipe 5 through the two first liquid outlet pipes 31 in the adapter 6, and the coolant in the two liquid cooling tubes of the second cable segment flows to the second junction pipe 5 through the two first liquid outlet pipes 31 in the charging gun 300, and the coolant in the second junction pipe 5 flows back to the liquid cooling device 201.

[0064] like Figure 1 to Figure 2 As shown, an embodiment of the present invention further provides a charging device, including a charging pile 200, a charging gun 300 and the above-mentioned liquid cooling cable. Specifically, the charging pile 200 includes a power supply device (not shown) and a liquid cooling device. The conductor groups 112 of the cable segments 11 located at the head and tail ends of the cable body 1 are electrically connected to the terminals of the power supply device (not shown) and the charging gun 300, respectively. The liquid cooling device 201 is used to realize the circulation of the cooling liquid. Each liquid inlet pipe group 2 can be connected to the liquid outlet of the liquid cooling device 201, and each liquid outlet pipe group 3 can be connected to the liquid return port of the liquid cooling device 201.

[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A liquid cooling cable, characterized in that: include: A cable body (1), both ends of which are respectively used to connect to a charging pile (200) and a charging gun (300), the cable body (1) comprising at least two cable segments (11) connected end to end in sequence, each of the cable segments (11) comprising a liquid cooling tube group (111) and a conductor group (112) corresponding to the liquid cooling tube group (111), and every two adjacent conductor groups (112) are electrically connected; At least two liquid inlet pipe groups (2) are arranged in one-to-one correspondence with the cable segments (11), one end of the liquid inlet pipe group (2) is used to communicate with the charging pile (200), and the other end is used to communicate with one end of the corresponding liquid cooling pipe group (111); and At least two liquid outlet pipe groups (3) are arranged in one-to-one correspondence with the cable segments (11), one end of the liquid outlet pipe group (3) being used to communicate with the charging pile (200), and the other end being used to communicate with an end of the corresponding liquid cooling pipe group (111) away from the liquid inlet pipe group (2).

2. The liquid cooling cable according to claim 1, characterized in that: The liquid cooling cable further comprises a first confluence pipe (4), one end of the first confluence pipe (4) being used for communicating with the charging pile (200), and one end of the liquid inlet pipe group (2) away from the liquid cooling pipe group (111) being communicated with the first confluence pipe (4); and / or, The liquid cooling cable further comprises a second converging pipe (5), one end of the second converging pipe (5) being used for communicating with the charging pile (200), and one end of the liquid outlet pipe group (3) away from the liquid cooling pipe group (111) being communicated with the second converging pipe (5).

3. The liquid cooling cable according to claim 2, characterized in that: The liquid cooling cable further comprises at least one adapter (6), and every two adjacent cable segments (11) are connected via one adapter (6).

4. The liquid cooling cable according to claim 3, characterized in that: The adapter (6) comprises a first adapter (61), and an end of the liquid inlet pipe group (2) away from the liquid cooling pipe group (111) is connected to the first confluence pipe (4) via the first adapter (61); and / or, The adapter (6) comprises a second adapter (62), and one end of the liquid outlet pipe group (3) away from the liquid cooling pipe group (111) is connected to the second converging pipe (5) via the second adapter (62).

5. The liquid cooling cable according to claim 3, characterized in that: The adapter (6) comprises a third adapter (63), and every two adjacent conductor groups (112) are electrically connected via the third adapter (63).

6. The liquid cooling cable according to claim 1, characterized in that: Each of the liquid cooling tube groups (111) comprises two liquid cooling tubes arranged side by side, and each of the conductor groups (112) comprises two conductors corresponding one-to-one to the liquid cooling tubes.

7. The liquid cooling cable according to claim 6, characterized in that: Each of the liquid inlet pipe groups (2) comprises two first liquid inlet pipes (21), one end of each of the two first liquid inlet pipes (21) is used to communicate with the charging pile (200), and the other ends of the two first liquid inlet pipes (21) are respectively connected to the two liquid cooling pipes; and / or, Each of the liquid outlet pipe groups (3) comprises two first liquid outlet pipes (31), one end of each of the two first liquid outlet pipes (31) is used to communicate with the charging pile (200), and the other ends of the two first liquid outlet pipes (31) are respectively connected to the two liquid cooling pipes.

8. The liquid cooling cable according to claim 6, characterized in that: The conductor is inserted into the corresponding liquid cooling tube; or, the conductor is sleeved outside the corresponding liquid cooling tube.

9. The liquid cooling cable according to any one of claims 1 to 8, characterized in that: The number of the cable segments (11) is two, and the liquid cooling cable further comprises a transition piece (6), and the two cable segments (11) are connected via the transition piece (6).

10. A charging device, characterized in that: It comprises a charging pile (200), a charging gun (300), and a liquid cooling cable according to any one of claims 1 to 9.

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