Charging cables, charging gun components and charging equipment

Abstract

The present invention discloses a charging cable, a charging gun assembly and a charging device, and relates to the field of charging technology. The charging cable comprises: at least one core group, the core group comprises at least one core and an insulating layer sleeved on the radial outside of at least one core, and there are gaps between adjacent core groups; a protective layer sleeved on the radial outside of all core groups, and the protective layer and the core groups are spaced apart; a cable phase change module, the cable phase change module fills the gap between the core group and the protective layer and the gap between adjacent core groups, and at least one fluid conduit extending along the wiring direction of the charging cable and penetrating the charging cable is defined in the cable phase change module, and the material of the cable phase change module includes phase change material. The temperature rise of the charging cable of the present invention is smaller, so that the supported charging power can be increased.

Description

Technical Field

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

[0002] With the popularization of electric vehicles such as new energy vehicles, eVTOL (Electric Vertical Takeoff and Landing), and new energy ships that use electricity as the main power source, charging equipment such as charging piles are playing an increasingly important role and have increasingly higher indicators, such as the continuous improvement of charging speed requirements.

[0003] In the related art, the charging cable of the charging pile generates a large amount of heat during the process of quickly charging the battery pack of the electric vehicle, thereby affecting the charging speed. Summary of the invention

[0004] The main purpose of the present invention is to provide a charging cable, a charging gun assembly and a charging device, aiming to solve the technical problem in the related art that the charging cable generates a large amount of heat and affects the charging speed.

[0005] To achieve the above object, the present invention provides a charging cable, comprising:

[0006] At least one wire core group, the wire core group includes at least one wire core and an insulating layer sleeved on the radial outer side of the at least one wire core, and there is a gap between adjacent wire core groups;

[0007] A protective layer is sleeved on the radial outside of all the core groups, and the protective layer is spaced apart from the core groups; and

[0008] A cable phase change module, the cable phase change module is filled in the gap between the core group and the protective layer and in the gap between adjacent core groups, and at least one fluid conduit extending along the wiring direction of the charging cable and penetrating the charging cable is defined in the cable phase change module, and the material of the cable phase change module includes phase change material.

[0009] In one embodiment, the cable phase change module includes a plurality of first sub-phase change filling bodies arranged in sequence and spaced apart along the wiring direction of the charging cable, and the first sub-phase change filling bodies have a first through hole, so that the cavities between any two adjacent first sub-phase change filling bodies among the plurality of first sub-phase change filling bodies are connected through the first through hole to form a fluid pipeline.

[0010] In one embodiment, at least two fluid pipes are disposed in the cable phase change module, and two fluid pipes in the at least two fluid pipes form a group, one of the fluid pipes in a group is a liquid inlet pipe, and the other is a liquid outlet pipe;

[0011] Among them, the cable phase change module includes a plurality of second sub-phase change filling bodies arranged in sequence along the wiring direction of the charging cable, and the second sub-phase change filling bodies have a second through hole, so that the cavities between any two adjacent second sub-phase change filling bodies in the plurality of second sub-phase change filling bodies are connected through the second through hole to form a liquid inlet pipe, and a liquid outlet pipe with a pipe structure is arranged in the cable phase change module.

[0012] In one embodiment, the liquid outlet pipe is made of a polymer thermal insulation material.

[0013] In one embodiment, the liquid outlet pipe is constructed as a thin-walled metal pipe, the wall thickness of the thin-walled metal pipe is b, and b satisfies: 0.3 mm≤b≤1 mm.

[0014] In one embodiment, the fluid conduits include two groups, each group of fluid conduits includes at least one fluid conduit, and the two groups of fluid conduits are symmetrically and spaced apart on both sides of an axial plane of the charging cable;

[0015] On a radial plane of the charging cable, all the wire core groups are dispersedly arranged in an area within the protective layer except for the fluid pipeline.

[0016] In one embodiment, at least one wire core group includes a battery charging positive wire, a battery charging negative wire, a low voltage auxiliary positive wire, a low voltage auxiliary negative wire, a first communication wire, a second communication wire, a first charging connection wire, a second charging connection wire, a ground wire, an emergency power supply positive wire, an emergency power supply negative wire, a first emergency power supply communication wire, a second emergency power supply communication wire, and an emergency power supply ground wire.

[0017] In one embodiment, the battery charging positive line and the battery charging negative line are symmetrical to each other along the first direction and are spaced apart on both sides of the central axis of the charging cable;

[0018] On a radial plane of the charging cable, a portion of the low-voltage auxiliary positive line, the low-voltage auxiliary negative line, the first communication line, the second communication line, the first charging connection line, the second charging connection line, and the grounding line are arranged in a radially outer region of the battery charging positive line, and another portion is arranged in a radially outer region of the battery charging negative line;

[0019] The positive line of the emergency power supply and the negative line of the emergency power supply are both arranged between the positive line of the battery charging and the negative line of the battery charging, and the positive line of the emergency power supply and the negative line of the emergency power supply are symmetrical to each other along the second direction and are arranged at intervals on both sides of the central axis; on the plane where the radial direction of the charging cable is located, the second direction is the direction of the axial plane, and the first direction is perpendicular to the second direction;

[0020] A portion of the first emergency power supply communication line, the second emergency power supply communication line and the emergency power supply grounding line is arranged between the central axis and the battery charging positive line, and the other portion is arranged between the central axis and the battery charging negative line.

[0021] In one embodiment, the protective layer is configured as a metal layer, a plastic layer, or a plastic layer with a metal mesh.

[0022] In one embodiment, the phase change material is a solid-solid phase change material.

[0023] In a second aspect, the present invention further provides a charging gun assembly, comprising:

[0024] Charging gun head; and

[0025] A charging cable is connected to the charging gun head, and the charging cable is constructed as the charging cable described above.

[0026] In one embodiment, the charging gun head has a fluid interface;

[0027] At least part of the fluid conduit of the charging cable is in communication with the fluid interface.

[0028] In one embodiment, there are at least two fluid interfaces; the charging gun head includes:

[0029] A gun head body, wherein the gun head body has a liquid inlet cooling cavity and a liquid outlet cooling cavity, at least one fluid interface is connected to the liquid inlet cooling cavity, and at least one fluid interface is connected to the liquid outlet cooling cavity; and

[0030] A charging terminal, which is disposed on the gun head body and passes through the liquid inlet cooling cavity or the liquid outlet cooling cavity to be connected to the corresponding wire core group, or the charging terminal extends into the liquid inlet cooling cavity or the liquid outlet cooling cavity to be connected to the corresponding wire core group;

[0031] Among them, the fluid pipelines in at least part of the fluid pipelines are grouped in pairs, and in each group of fluid pipelines, one fluid pipeline is connected to the liquid inlet cooling cavity, and the other fluid pipeline is connected to the liquid outlet cooling cavity.

[0032] In one embodiment, the remaining fluid pipes except at least part of the fluid pipes are grouped in pairs, and in each group of remaining fluid pipes, one end of one remaining fluid pipe close to the charging gun head is connected to another end of another remaining fluid pipe close to the charging gun head.

[0033] In one embodiment, the charging gun head includes:

[0034] A gun tip body, wherein the gun tip body has a gun tip cooling cavity and at least two fluid flow channels, one end of the fluid flow channel is connected to the fluid interface, and the other end of the fluid flow channel is connected to the fluid pipeline in at least part of the fluid pipeline; and

[0035] A charging terminal is disposed on the gun head body, and the charging terminal penetrates the gun head cooling cavity and is connected to the wire core group, or the charging terminal extends into the gun head cooling cavity and is connected to the wire core group;

[0036] Among them, in each group of remaining fluid pipelines, one end of a remaining fluid pipeline close to the charging gun head is connected with another end of the remaining fluid pipeline close to the charging gun head through the gun head cooling cavity.

[0037] In one embodiment, the fluid conduit is used for the insulating heat exchange fluid to flow through.

[0038] In one embodiment, the insulating heat exchange fluid is made of deionized water, electronic fluorinated liquid, hydrocarbons, esters or silicone oils.

[0039] In a third aspect, the present invention further provides a charging device, comprising a thermal management module; and a charging gun assembly as in the second aspect, wherein a fluid conduit of the charging gun assembly is connected to the thermal management module.

[0040] Compared with ordinary cables that use plastic or polymer materials as fillers, the technical solution of the present invention constructs the filler of the charging cable as a cable filling module made of phase change material. Since the phase change material can absorb heat, the temperature of the charging cable is effectively reduced, thereby avoiding overheating of the charging cable during charging.

[0041] In addition, the technical solution of the present invention is also provided with a fluid conduit for the circulation of coolant in the cable phase change module. In this way, in the process of the coolant flowing through the fluid conduit, the coolant can cool the cable phase change module, thereby increasing the heat storage capacity of the cable phase change module by taking away heat, so that the cable phase change module can absorb more heat emitted by the core. That is, in the case of the same cross-sectional area, the temperature rise per unit time of the charging cable is smaller. In this way, under the premise that the charging power of the charging gun is determined, that is, the heat generation is determined, the purpose of cooling the charging cable can be achieved by a smaller amount of phase change material, thereby reducing the outer diameter of the charging cable and reducing the weight of the charging cable. In other words, the charging cable can support higher power charging in the above manner, thereby further improving the fast charging speed.

[0042] In addition, the wire cores in the charging cable of the present invention also include a wire core group such as an emergency power supply positive wire, an emergency power supply negative wire, a first emergency power supply communication wire, a second emergency power supply communication wire, and an emergency power supply ground wire required for charging the low-voltage emergency power supply, thereby also providing a charging function for the emergency charging power supply.

[0043] In addition, compared with air cooling and traditional liquid-cooled plate cooling, the coolant of the present invention is an insulating heat exchange fluid, and immersion cooling can be used for wire cores and charging terminals, etc. It has a larger heat dissipation area and better heat dissipation effect, and can therefore support a greater charging power.

[0044] In addition, the phase change material of the charging cable is arranged in segments, which significantly reduces the weight of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0046] Figure 1 A cross-sectional schematic diagram of an embodiment of a charging cable provided by the present invention;

[0047] Figure 2 A schematic diagram of a pipeline of an embodiment of a charging cable provided by the present invention;

[0048] Figure 3 A schematic structural diagram of an embodiment of a charging gun assembly provided by the present invention;

[0049] Figure 4 A schematic structural diagram of another embodiment of a charging gun assembly provided by the present invention;

[0050] Figure 5 A schematic diagram of a cable cooling channel of an embodiment of a charging cable provided by the present invention.

[0051] Description of Figure Numbers:

[0052] 151, charging gun head; 1511, gun head body; 1512, charging terminal; 1511a, liquid outlet cooling chamber; 1511b, liquid inlet cooling chamber; 1513, fluid interface; 1514, fluid flows through the pipeline; 152, charging cable; 1521, wire core group; 1521a1, battery charging positive line; 1521a2, battery charging negative line; 1521a3, first communication line; 1521a4, second communication line; 1521a5, first charging connection line; 1521a6, second charging connection line; 1521a7, low voltage auxiliary positive line; 1521a8, low voltage auxiliary negative line; 15 21a9, grounding wire; 1521b1, positive line of emergency power supply; 1521b2, negative line of emergency power supply; 1521b3, first emergency power supply communication line; 1521b4, second emergency power supply communication line; 1521b5, emergency power supply grounding wire; 1522, protective layer; 1523, cable phase change module; 1523a, second sub-phase change filling body; 1523b, third sub-phase change filling body; 1524, fluid pipeline; 1524a, liquid outlet pipe; 1524b, liquid inlet pipe; 1524c, first cable cooling channel; 1524d, second cable cooling channel; 1511c, gun head cooling chamber.

[0053] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0057] With the popularity of battery-powered electric vehicles such as new energy vehicles, eVTOL, and new energy ships, charging piles and other charging equipment have become increasingly important and have higher and higher indicators as battery charging equipment. Specifically, the demand for fast charging of electric vehicles is increasing, and the power of a single charging pile gun is getting higher and higher, which means that the weight and size of charging piles and charging guns are also increasing with the power.

[0058] In order to solve the problem of size and weight of the charging gun, the following technical routes exist in related technologies: adopting a high-voltage system, increasing the voltage at the same power to reduce the charging current, which can reduce the size of cables, plugs, etc. to reduce weight and volume.

[0059] However, when charging electric vehicles, especially during fast charging, the high voltage causes the charging cable of the charging pile to generate a lot of heat during the fast charging process, thereby affecting the charging speed.

[0060] To this end, the present invention provides a solution, by constructing the filler of the charging cable as a cable filling module made of phase change material. Since the phase change material can absorb heat, the temperature of the charging cable is effectively reduced, and the charging cable is prevented from overheating during charging. In addition, a fluid pipeline for the circulation of coolant is also provided in the cable phase change module. The coolant not only directly immerses the wire core for cooling, but also can exchange heat with the cable phase change module, thereby significantly improving the heat dissipation effect. In this way, the charging cable can support higher power charging, and further improve the fast charging speed.

[0061] The technical concept of the present invention is further described below in conjunction with some specific embodiments.

[0062] See also Figure 1 The present invention provides a charging cable, comprising at least one core group 1521 (1521a1, 1521a2, 1521a3, 1521a4, 1521a5, 1521a6, 1521a7, 1521a8, 1521a9, 1521b1, 1521b2, 1521b3, 1521b4, 1521b5), a protective layer 1522 mounted on the radial outer sides of all the core groups 1521, and a cable phase change module 1523, wherein the core group 1521 is 21 includes at least one wire core and an insulating layer radially outside of at least one wire core, and there is a gap between adjacent wire core groups 1521, and the wire core groups 1521 are spaced apart from the protective layer 1522; the cable phase change module 1523 is filled in the gap between the wire core group 1521 and the protective layer 1522 and the gap between adjacent wire core groups 1521, and the material of the cable phase change module 1523 includes phase change material; wherein a fluid pipeline 1524 is arranged in the cable phase change module 1523.

[0063] In this embodiment, the insulating layer wraps at least one bundle of wire cores to form a wire core group 1521. The wire core can be a battery charging positive wire, a battery charging negative wire, a low-voltage auxiliary positive wire, a low-voltage auxiliary negative wire, etc. There can be multiple groups of wire core groups 1521, and there are gaps between adjacent wire core groups 1521. It can be understood that the gap between adjacent wire core groups 1521 can be that the two are spaced apart from each other, or the outer surfaces of the wire core groups 1521 with curved outer surfaces such as circular cross-sections are tangent to each other, thereby forming a gap in the non-tangent part between the outer surfaces of the two. The cable phase change module 1523 is used to fill the space between the wire core group 1521 of the charging cable 152 and the protective layer 1522 of the outer wall, as well as between adjacent wire core groups 1521.

[0064] The protective layer 1522 is an external protective structure of the charging cable, and is constructed as a metal layer, a plastic layer, or a plastic layer with a metal braided mesh. In one example, the protective layer 1522 is constructed as a plastic layer with a metal braided mesh, so that better mechanical properties can be provided on the basis of meeting the cable weight index.

[0065] The material of the cable phase change module 1523 includes phase change material. During the charging process, compared with the use of plastic or polymer materials to fill the gap between the wire core and the protective layer 1522 in the related art, the phase change material can absorb the heat generated by the wire core, thereby effectively reducing the temperature of the charging cable 152 and avoiding overheating of the charging cable 152 during charging.

[0066] In addition, in this embodiment, a fluid pipe 1524 for coolant to flow through is also provided in the cable phase change module 1523, that is, the fluid pipe 1524 extends along the wiring direction of the charging cable 152 and penetrates the charging cable 152. In this way, in the process of the coolant flowing through the fluid pipe 1524, the coolant can cool the cable phase change module 1523. It is not difficult to see that the flowing coolant can improve the heat storage capacity of the cable phase change module 1523 by taking away heat, so that the cable phase change module 1523 can absorb more heat emitted by the core. That is, under the same cross-sectional area, the temperature rise per unit time of the charging cable 152 of this embodiment is smaller. In this way, under the premise that the charging power of the charging gun is determined, that is, the heat generation is determined, the purpose of cooling the charging cable 152 can be achieved by a smaller amount of phase change material, thereby reducing the outer diameter of the charging cable 152 and reducing the weight of the charging cable 152.

[0067] In addition, a portion of the surface of the core group 1521 can be formed as the pipe wall of the fluid pipe 1524, or the core group 1521 can be completely set in the fluid pipe 1524. At this time, the coolant in the fluid pipe 1524 can directly contact the core group 1521 to perform immersion cooling. It is not difficult to see that compared with air cooling and liquid cooling, immersion cooling of the core group 1521 has a larger heat dissipation area and a better heat dissipation effect. Of course, at this time, since the outermost layer of the core group 1521 is an insulating layer, the coolant is insulated from the internal core.

[0068] It is not difficult to see that in this embodiment, compared with ordinary cables using plastic or polymer materials as fillers, this embodiment constructs the filler of the charging cable as a phase change material. Since the phase change material can absorb heat, it can effectively reduce the temperature of the charging cable and avoid overheating of the charging cable during charging. In addition, a fluid pipeline for the circulation of coolant is also provided in the cable phase change module. The coolant not only directly immerses the wire core group 1521 for cooling, but also can exchange heat with the cable phase change module 1523, thereby significantly improving the heat dissipation effect. In this way, the charging cable can support higher power charging, which can further improve the fast charging speed.

[0069] In one embodiment, the fluid conduit 1524 can be constructed as a cavity extending along the wiring direction of the charging cable 152, and the inner surface of the cavity has no protrusions, which is conducive to the coolant to quickly pass through the charging cable 152 and quickly fill the charging cable, avoiding a long wait for the coolant to fill the fluid conduit 1524 during charging.

[0070] Alternatively, in one embodiment, the cable phase change module 1523 includes a plurality of first sub-phase change filling bodies arranged in sequence and spaced apart along the wiring direction of the charging cable 152, and the first sub-phase change filling bodies have a first through hole, so that the cavities between any two adjacent first sub-phase change filling bodies among the plurality of first sub-phase change filling bodies are connected through the first through hole to form a fluid conduit 1524.

[0071] Thus, for any fluid conduit 1524, in the area where the phase change material forms the first sub-phase change filling body, the phase change material can fix the internal wire core and the external protective layer 1522, and absorb the heat generated by the wire core during charging. In the area where the phase change material is not filled: the outer wall of the wire core group 1521 and the inner wall of the protective layer 1522 and the opposite side walls of the two first sub-phase change filling bodies together enclose a cavity, which is used for the coolant to flow through, and the adjacent cavities are connected through the first through hole reserved in the first sub-phase change filling body. Thus, under the pressure provided by the pump, the coolant will fill each cavity in the charging cable 152, play a supporting role in the structure of the charging cable 152 itself, and effectively fix the internal wire core and the external protective layer 1522. Of course, the segmented spacing of the first sub-phase change filling body should be reasonable. Too long a spacing may make the structure of the charging cable 152 difficult to support, and the internal wire core will shake during the charging process.

[0072] It is not difficult to see that in this embodiment, the phase change material is arranged at intervals in the wiring direction of the cable, which significantly reduces the weight and improves the heat dissipation effect of the cable compared to ordinary charging gun cables.

[0073] See also Figure 1 and Figure 2In one embodiment, at least two fluid pipes 1524 are provided in the cable phase change module 1523, and two fluid pipes 1524 of the at least two fluid pipes 1524 form a group, one of the fluid pipes 1524 in a group is a liquid inlet pipe 1524b, and the other is a liquid outlet pipe 1524a; wherein, the cable phase change module 1523 includes a plurality of second sub-phase change filling bodies 1523a arranged in sequence and spaced apart along the wiring direction of the charging cable 152, and the second sub-phase change filling body 1523a has a second through hole, so that the cavities between any adjacent two second sub-phase change filling bodies 1523a in the plurality of second sub-phase change filling bodies 1523a are connected through the second through hole to form a liquid inlet pipe 1524b, and a liquid outlet pipe 1524a of a pipe structure is provided in the cable phase change module 1523.

[0074] In this embodiment, the fluid pipes 1524 in the cable phase change module 1523 are arranged in groups of two, and one of the fluid pipes in the group is a liquid outlet pipe 1524a, which is used for the coolant to flow into the eVTOL or other electric vehicles for charging. The liquid outlet pipe 1524a can be constructed as a pipe that penetrates the charging cable 152 along the wiring direction of the charging cable 152, and the inner wall surface thereof has no protrusions, so as to facilitate the coolant to quickly pass through the charging cable 152 and enter the eVTOL to cool the battery pack, or reach the charging gun head to cool the charging terminal 1512.

[0075] It is easy to understand that the faster the flow rate of the coolant, the less heat exchange there is between the coolant and other components in the charging cable 152, thereby effectively avoiding a significant change in the temperature of the coolant, and ensuring that the temperature difference between the coolant and the battery cell after entering the battery cavity of the eVTOL meets the heat dissipation requirements.

[0076] The other is a liquid inlet pipe 1524b, which is used to return the coolant from the eVTOL to the charging pile, or to return the coolant at the charging gun head 151 to the charging pile. As before, for each fluid pipeline 1524, in the area where the phase change material forms the second sub-phase change filling body 1523a, the phase change material can fix the internal wire core and the external protective layer 1522, and absorb the heat generated by the wire core during charging, while in the area where the phase change material is not filled: the outer wall of the wire core group 1521 and the inner wall of the protective layer 1522 and the opposite side walls of the two second sub-phase change filling bodies 1523a together enclose a cavity, which is used for the coolant to flow through, and the adjacent cavities are connected through the second through hole reserved in the second sub-phase change filling body 1523a. Therefore, under the pressure provided by the pump, the coolant will fill each cavity in the charging cable 152, thereby playing a role in supporting the cable structure and effectively fixing the internal wire core and the external protective layer 1522. Compared with the inner wall of the liquid outlet pipe 1524a without protrusions, since the second sub-phase change filling bodies 1523a are arranged at intervals, adjacent second sub-phase change filling bodies 1523a are connected through second through holes. In this way, the flow channel cross-section of the liquid inlet pipe 1524b shrinks at each second through hole, resulting in a more drastic change in the flow channel cross-section in the fluid flow direction of the liquid inlet pipe 1524b, which will effectively slow down the flow rate of the coolant in the liquid inlet pipe 1524b, so that the coolant can fully exchange heat with the wire core.

[0077] It is easy to understand that in this embodiment, the liquid outlet pipe 1524a allows the coolant to quickly pass through the charging cable 152 and enter the battery cavity or the charging gun head of the eVTOL to ensure the thermal management effect in other components, and the liquid inlet pipe 1524b allows the coolant to circulate slowly in the charging cable 152 to fully absorb the heat of the wire core, thereby ensuring the thermal management effect of the charging cable 152 itself.

[0078] In order to further reduce the heat exchange between the coolant in the liquid outlet pipe 1524a and the wire core, in one embodiment, the material of the liquid outlet pipe 1524a is a polymer thermal insulation material. Of course, in other embodiments, in order to improve the cooling effect of the liquid outlet pipe 1524a on the cable itself, the material of the liquid outlet pipe 1524a can be metal. Of course, further, the liquid outlet pipe 1524a is constructed as a thin-walled metal pipe, and the wall thickness of the thin-walled metal pipe is b, and b satisfies: 0.3mm≤b≤1mm. In addition, the material of the liquid outlet pipe 1524a can be selected according to specific needs.

[0079] In one embodiment, the fluid conduits 1524 include two groups, each group of fluid conduits 1524 includes at least one fluid conduit, and the two groups of fluid conduits 1524 are symmetrically and spaced apart on both sides of an axial plane of the charging cable; on the radial plane of the charging cable, all the core groups 1521 are dispersed in the area inside the protective layer 1522 except for all the fluid conduits 1524.

[0080] Specifically, see Figure 1 , Figure 1 The middle dotted line is an axial plane. Since the fluid pipes 1524 are arranged in pairs, the two groups of fluid pipes 1524 are symmetrically and spaced apart on both sides of an axial plane of the charging cable. On the radial plane of the charging cable, multiple wire core groups 1521 are roughly evenly arranged in the area of ​​the protective layer 1522 except for all the fluid pipes 1524, such as the area between the two groups of fluid pipes 1524.

[0081] It is not difficult to see that in this embodiment, all the core groups 1521 are dispersedly arranged in the area of ​​the protective layer 1522 except for all the fluid pipes 1524 to ensure full utilization of the cable space, making the layout of the fluid pipes 1524 and each core group 1521 more reasonable, thereby minimizing the outer diameter of the charging cable as much as possible.

[0082] In a specific example, the fluid pipes 1524 include four, two of which are arranged in a group on one side of an axial plane, and the other two are arranged in a group on the other side of the axial plane, and the spacing between the two groups is much larger than the spacing between the two fluid pipes 1524 in one group, thereby leaving sufficient space for installing the wire core group 1521.

[0083] It is understandable that for electric vehicles such as eVTOL, the fuselage includes not only the main power source such as the battery pack, but also the emergency low-voltage power source. Generally speaking, the emergency low-voltage power source is a 28V low-voltage emergency battery, so that when the main power source of the eVTOL fails, the emergency low-voltage power source can quickly take over and provide the necessary power support for the key systems of the eVTOL (such as the flight control system, navigation system, communication system, etc.), ensuring that the eVTOL can land safely and stably. Generally speaking, when the emergency power source is not used for a long time, it should also be charged and discharged at regular intervals (such as every three months) to maintain battery activity and extend its service life. Therefore, please refer to Figure 1 In one embodiment, at least one wire core group includes a battery charging positive line 1521a1, a battery charging negative line 1521a2, a low voltage auxiliary positive line 1521a7, a low voltage auxiliary negative line 1521a8, a first communication line 1521a3, a second communication line 1521a4, a first charging connection line 1521a5, a second charging connection line 1521a6, a grounding line 1521a9, an emergency power supply positive line 1521b1, an emergency power supply negative line 1521b2, a first emergency power supply communication line 1521b3, a second emergency power supply communication line 1521b4 and an emergency power supply grounding line 1521b5.

[0084] Taking the standard charging interface as a DC 9-pin layout area as an example, it includes DC power supply (DC+, DC-), common grounding (PE) for the car and the pile, message interaction communication (S+, S-), car and pile connection confirmation communication (CC1, CC2), low-voltage auxiliary power supply (A+, A-), a total of 9 standard charging terminals. Among them, the DC+ terminal is connected to the battery charging positive line 1521a1, the A+ terminal is connected to the low-voltage auxiliary positive line 1521a7, the A- terminal is connected to the low-voltage auxiliary negative line 1521a8, and the DC- terminal is connected to the battery charging negative line 1521a1. The PE terminal is connected to the ground line 1521a9, the S+ is connected to the first communication line 1521a3, the S- terminal is connected to the second communication line 1521a4, the CC1 terminal is connected to the first charging connection line 1521a5, and the CC2 terminal is connected to the second charging connection line 1521a6.

[0085] The emergency power positive line 1521b1 and the emergency power negative line 1521b2 are used to establish a charging channel for the low-voltage emergency power supply. The emergency power grounding line is used for grounding to ensure safety. The first emergency power communication line 1521b3 and the second emergency power communication line 1521b4 are used to establish a communication channel between charging equipment such as charging piles and charged equipment such as eVTOL, so as to control the charging current and other charging parameters of the charging channel of the low-voltage emergency power supply.

[0086] Of course, the corresponding charging plug or charging gun head, as well as the charging socket, also have a corresponding low-voltage emergency charging interface, so that a charging channel for an emergency low-voltage power supply can be established.

[0087] In this way, the charging cable provided in this embodiment can not only charge the main power supply, but also charge the emergency low-voltage power supply, thereby expanding the function of the charging cable.

[0088] In a specific example, the battery charging positive line 1521a1 and the battery charging negative line 1521a2 are symmetrical to each other along a first direction and are spaced apart on both sides of the central axis of the charging cable; on a radial plane of the charging cable, a portion of the low-voltage auxiliary positive line 1521a7, the low-voltage auxiliary negative line 1521a8, the first communication line 1521a3, the second communication line 1521a4, the first charging connection line 1521a5, the second charging connection line 1521a6 and the grounding line 1521a9 are arranged in the radial outer area of ​​the battery charging positive line 1521a1, and the other portion is arranged in the radial outer area of ​​the battery charging negative line 1521a2. Outer area; the emergency power supply positive line 1521b1 and the emergency power supply negative line 1521b2 are both arranged between the battery charging positive line 1521a1 and the battery charging negative line 1521a2, and the emergency power supply positive line 1521b1 and the emergency power supply negative line 1521b2 are symmetrical to each other along the second direction and are arranged at intervals on both sides of the central axis; a part of the first emergency power supply communication line 1521b3, the second emergency power supply communication line 1521b4 and the emergency power supply grounding line 1521b5 are arranged between the central axis and the battery charging positive line 1521a1, and the other part is arranged between the central axis and the battery charging negative line 1521a2.

[0089] Specifically, see Figure 1 , the dotted line is an axial plane, the direction of the axial plane, that is, the normal direction is the second direction. The direction perpendicular to the second direction is the first direction. For ease of understanding, in this embodiment, the first direction is the left-right direction and the second direction is the up-down direction.

[0090] The battery charging positive line 1521a1 is located on the left side of the central axis and is spaced a certain distance from the central axis. The grounding line 1521a9, the low-voltage auxiliary positive line 1521a7 and the low-voltage auxiliary negative line 1521a8 are arranged in the left outer area. The battery charging negative line 1521a2 is located on the right side of the central axis and is spaced a certain distance from the central axis. The first communication line 1521a3, the second communication line 1521a4, the first charging connection line 1521a5, and the second charging connection line 1521a6 are located in the right outer area of ​​the battery charging negative line 1521a1.

[0091] The emergency power supply positive line 1521b1 and the emergency power supply negative line 1521b2 are respectively located on the upper and lower sides of the central axis, and the first emergency power supply communication line 1521b3 and the second emergency power supply communication line 1521b4 are arranged in the area between the right side of the two and the battery charging negative line 1521a1, and the emergency power supply grounding line 1521b5 is arranged in the area between the left side of the two and the battery charging positive line 1521a1.

[0092] It is not difficult to see that this layout not only fully utilizes the internal space of the charging cable, but also centrally arranges multiple core groups 1521 for charging the low-voltage emergency power supply, thereby facilitating subsequent inspection and maintenance.

[0093] In one embodiment, in order to ensure the structural strength of the charging cable 152, the phase change material is a solid-solid phase change material. The solid-solid phase change material can still maintain its shape after absorbing heat. It should be noted that the solid-solid phase change material can absorb or release heat in the solid state during the process of transforming from one crystal structure (phase state) to another crystal structure (phase state). During the phase change process of this material, the material remains in a solid state and the volume change is relatively small, so that it can not only store heat, but also ensure the structure of supporting the charging cable 152. In one example, the solid-solid phase change material can be an organic polymer phase change material such as high-density polyethylene. Or, in another example, the solid-solid phase change material can be a composite phase change material of organic polymer and paraffin.

[0094] In the second aspect, the present invention further provides a charging gun assembly. The charging gun assembly includes a charging gun head 151 and a charging cable 152. The specific structure of the charging cable 152 refers to the above embodiment. Since the charging cable 152 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0095] It can be understood that when charging at the charging pile, the charging equipment can cool the battery pack in the electric vehicle such as eVTOL. That is, the charging pile needs to provide cooling liquid to the electric vehicle, so in one embodiment, the charging gun head 151 has a fluid interface 1513; wherein at least part of the fluid pipeline 1524 of the charging cable 152 is connected to the fluid interface 1513.

[0096] In this embodiment, the charging gun head 151 has a fluid interface 1513 in addition to a charging interface. The fluid interface 1513 is used to communicate with the battery thermal management system of an electric vehicle such as an eVTOL. In addition, the fluid interface 1513 is connected to at least part of the fluid pipeline 1524 of the charging cable 152, so that the coolant flows through at least part of the fluid pipeline 1524, and then enters the electric vehicle such as the eVTOL through the fluid interface 1513.

[0097] It is not difficult to see that by integrating the fluid pipe 1524 for the circulation of coolant into the charging cable 152, when electric vehicles such as eVTOL are charged, when the charging gun and electric vehicles such as eVTOL are plugged in, not only an electric energy channel but also a coolant channel is established, thereby reducing the plug-in steps when charging the eVTOL, thereby improving the charging efficiency of the eVTOL.

[0098] See also Figure 3 In one embodiment, there are at least two fluid interfaces 1513; the charging gun head 151 includes a gun head body 1511 and a charging terminal 1512. The gun head body 1511 has a liquid inlet cooling chamber 1511b and a liquid outlet cooling chamber 1511a, at least one fluid interface 1513 is connected to the liquid inlet cooling chamber 1511b, and at least one fluid interface 1513 is connected to the liquid outlet cooling chamber 1511a; the charging terminal 1512 is arranged on the gun head body 1511, and the charging terminal 1512 passes through the liquid inlet cooling chamber 1511b or the liquid outlet cooling chamber 1511a and is connected to the corresponding wire core group 1521, or the charging terminal 1512 extends into the liquid inlet cooling chamber 1511b or the liquid outlet cooling chamber 1511a and is connected to the corresponding wire core group 1521. Among them, the fluid pipelines 1524 in at least some of the fluid pipelines 1524 are grouped in pairs, and in each group of fluid pipelines 1524, one fluid pipeline 1524 is connected to the liquid inlet cooling cavity 1511b, and the other fluid pipeline 1524 is connected to the liquid outlet cooling cavity 1511a.

[0099] Specifically, the gun head body 1511 is the main part of the charging gun head 151, which includes a tail connected to the charging cable 152, and a head provided with a fluid interface 1513 and a charging interface. All the charging terminals 1512 form the aforementioned charging interface in a preset layout. The charging terminal 1512 is assembled in the charging gun head 151, and one end of the charging terminal 1512 is exposed from the head, and the other end of the charging terminal 1512 extends to the tail to connect with the core. It can be understood that the charging terminal 1512 can be connected to the wires of the core group 1521 for power transmission, or it can be connected to the communication line of the core group 1521 for information transmission.

[0100] In a feasible implementation, the tail of the gun tip body 1511 also has a gun tip phase change module constructed of phase change material, and the structure of the gun tip phase change module is consistent with that of the cable phase change module 1523, so that the two can cooperate with each other.

[0101] At least part of the aforementioned fluid conduits 1524. That is, the fluid conduits 1524 connected to the fluid interface 1513 are grouped in pairs, thereby forming a "one in and one out" combination, and then one fluid conduit 1524 in each group of fluid conduits 1524 is connected to the liquid inlet cooling chamber 1511b, and the other fluid conduit 1524 is connected to the liquid outlet cooling chamber 1511a. Therefore, in this embodiment, a liquid inlet cooling chamber 1511b and a liquid outlet cooling chamber 1511a are provided in the gun head body 1511. And on the radial plane of the gun head body 1511, the liquid inlet cooling chamber 1511b and the liquid outlet cooling chamber 1511a are arranged side by side. The liquid inlet cooling chamber 1511b is connected to the fluid interfaces 1513 in the liquid inlet direction of all fluid interfaces 1513 and the "one in" fluid conduit 1524 (such as the liquid inlet pipe 1524b) in each group of "one in and one out". The liquid outlet cooling cavity 1511a is connected to the fluid interface 1513 in the liquid outlet direction of all the fluid interfaces 1513 and is connected to the "one-in-one-out" fluid pipeline 1524 (such as the liquid outlet pipe 1524a) in each group of "one-in-one-out". In this way, the coolant before entering the eVTOL or other electric vehicles is temporarily retained in the liquid outlet cooling cavity 1511a, and the coolant leaving the eVTOL is temporarily retained in the liquid inlet cooling cavity 1511b after entering from the fluid interface 1513. It is worth mentioning that in this embodiment, the fluid pipeline 1524 connected to the fluid interface 1513 can be regarded as the liquid inlet pipe 1524b or the liquid outlet pipe 1524a.

[0102] A portion of the multiple charging terminals 1512 pass through the liquid inlet cooling cavity 1511b and are connected to the corresponding wire core group 1521, while another portion of the charging terminals 1512 pass through the liquid outlet cooling cavity 1511a and are connected to the corresponding wire core group 1521, so that each charging terminal 1512 in the charging gun head 151 is directly in contact with the coolant and is cooled during operation.

[0103] Alternatively, a portion of the multiple charging terminals 1512 extends into the liquid inlet cooling chamber 1511b, and the corresponding wire core group 1521 also extends into the liquid inlet cooling chamber 1511b, and the two are connected in the liquid inlet cooling chamber 1511b. Similarly, another portion of the multiple charging terminals 1512 extends into the liquid outlet cooling chamber 1511a, and the corresponding wire core group 1521 also extends into the liquid outlet cooling chamber 1511a, and the two are connected in the liquid outlet cooling chamber 1511a.

[0104] It is not difficult to see that the charging cable in this embodiment cools the wire core in the charging cable 152 and the charging terminal 1512 of the charging gun head 151 when delivering the coolant, so that this embodiment provides cooling measures for each key component of the charging gun assembly that generates heat during the charging process, so as to significantly improve the heating phenomenon of each key component of the charging process. In this way, through the cooling solution provided by this embodiment, the charging gun assembly can support a higher rate of charging power and reduce the charging time, that is, it can support faster fast charging technology.

[0105] In one embodiment, the fluid conduit 1524 is for the insulating heat exchange fluid to flow through. That is, the coolant is an insulating coolant with no flash point. In one embodiment, the material of the insulating heat exchange fluid is deionized water, electronic fluoride liquid, hydrocarbons, esters or silicone oils. In this way, the coolant has the characteristics of high insulation, high specific heat capacity, high thermal conductivity, non-combustibility, no flash point, non-toxicity, and low chemical activity. Therefore, even if the coolant in this embodiment leaks, safety problems can be avoided. Optionally, in one embodiment, the electronic fluoride liquid is configured as hydrofluoroether or hydrofluoroolefin. Optionally, in one embodiment, the hydrocarbon is configured as mineral oil or synthetic hydrocarbon oil, such as transformer oil. Optionally, in one embodiment, the lipid is configured as triglyceride or synthetic ester. Optionally, in one embodiment, the silicone oil is configured as dimethyl silicone oil.

[0106] In this way, in this embodiment, the coolant can directly contact the wire core in the charging cable 152 and the charging terminal 1512 of the charging gun head 151. Therefore, under the same power, since there is no need to design isolation measures (isolation of coolant and wire core, charging terminal), the charging gun cable 152 and the charging gun head 151 are smaller in size and lighter in weight, which improves the convenience of personnel operation.

[0107] Of course, since the cross-sectional shape of the charging gun head 151 is generally constructed as a symmetrical figure, in this embodiment, the liquid inlet cooling cavity 1511b and the liquid outlet cooling cavity 1511a can be constructed as a symmetrical structure, thereby fully utilizing the internal space of the charging gun head 151.

[0108] It is worth mentioning that all fluid pipes 1524 can be connected to the fluid interface 1513, so as to deliver the aforementioned coolant or insulating heat exchange fluid to electric vehicles such as eVTOL. In this process, the coolant or insulating heat exchange fluid can also perform heat exchange cooling on the heating body such as the cable of the charging cable itself. However, this method will cause the temperature of the coolant or insulating heat exchange fluid to change greatly in the charging cable, thereby affecting the heat exchange effect of the coolant or insulating heat exchange fluid in electric vehicles such as eVTOL. Therefore, in some embodiments, some fluid pipes 1524 can be reserved in all fluid pipes 1524 to perform heat exchange cooling only on the heating body such as the cable of the charging cable itself, that is, some fluid pipes 1524 in all fluid pipes 1524 are not connected to the fluid interface 1513, that is, the remaining fluid pipes except for at least part of the aforementioned fluid pipes 1524. Specifically, the remaining fluid pipes except for at least part of the aforementioned fluid pipes 1524 are grouped in pairs, and one end of each group of remaining fluid pipes near the charging gun head is connected to the other end of the remaining fluid pipe near the charging gun head.

[0109] It is worth mentioning that, in the present embodiment, the one remaining fluid conduit is the first cable cooling channel 1524c, and the other remaining fluid conduit is the second cable cooling channel 1524d.

[0110] It can be seen that not all fluid pipes 1524 are used to deliver coolant to electric vehicles such as eVTOL, but can be constructed to be dedicated to the cooling needs of the charging cable itself. In this way, the first cable cooling channel 1524c and the second cable cooling channel 1524d together form a U-shaped channel in the charging gun assembly, which is closed at one end and open at the other end to communicate with the pile end interface 112. Specifically, the coolant enters the charging cable 152 from the open end of the first cable cooling channel 1524c, flows through the entire charging cable 152 in one direction, and then enters the second cable cooling channel 1524d, and flows in the second cable cooling channel 1524d in the opposite direction and returns to the charging pile.

[0111] In this embodiment, during fast charging, due to the high heat generated by the charging cable 152, the coolant entering the eVTOL flows through the liquid outlet pipe 1524a in the charging cable 152 without specifically cooling the charging cable 152. Instead, the charging cable 152 itself is cooled through the first cable cooling channel 1524c and the second cable cooling channel 1524d in the charging cable 152, thereby ensuring the cooling effect of the charging cable 152 itself while ensuring the cooling effect of the coolant transported to other places.

[0112] The first cable cooling channel 1524c and the second cable cooling channel 1524d can be connected through a connecting piece built into the rear of the charging gun head 151. Figure 4 In one embodiment, the charging gun head 151 includes: a gun head body 1511 and a charging terminal 1512. The gun head body 1511 has a gun head cooling cavity 1511c and a fluid flow channel 1514. One end of the fluid flow channel 1514 is connected to the fluid interface 1513, and the other end of the fluid flow channel 1514 is connected to the fluid pipeline 1524 (liquid inlet pipe 1524b or liquid outlet pipe 1524a) in the aforementioned at least part of the fluid pipeline 1524; the charging terminal 1512 is arranged on the gun head body 1511, and the charging terminal 1512 passes through the gun head cooling cavity 1511c and is connected to the wire core group 1521, or the charging terminal 1512 extends into the gun head cooling cavity 1511c and is connected to the wire core group 1521. In each group of other fluid pipelines, one end of the other fluid pipeline close to the charging gun head is connected to another end of the other fluid pipeline close to the charging gun head through the gun head cooling cavity 1511c.

[0113] In this embodiment, the gun head body 1511 is not provided with a liquid inlet cooling chamber 1511b and a liquid outlet cooling chamber 1511a, but only one gun head cooling chamber 1511c, at which time all the charging terminals 1512 pass through the gun head cooling chamber 1511c and communicate with the wire core group 1521. Alternatively, the wire core group 1521 extends into the gun head cooling chamber 1511c, and all the charging terminals 1512 extend into the gun head cooling chamber 1511c and communicate with the corresponding wire core group 1521. And the first cable cooling channel 1524c and the second cable cooling channel 1524d are both connected to the gun head cooling chamber 1511c to achieve mutual communication. In this way, on the one hand, the coolant used to cool the charging terminal 1512 is a coolant dedicated to the charging cable itself, rather than a coolant transported to or returned from elsewhere such as the eVTOL, thereby ensuring the cooling effect of each charging terminal 1512. On the other hand, the connection point between the first cable cooling channel 1524 c and the second cable cooling channel 1524 d is not in the charging cable 152 , but at the charging gun head 151 , thereby simplifying the structure and manufacturing cost of the charging cable 152 .

[0114] In addition, a fluid flow channel 1514 is defined in the gun head body 1511. In one example, the number of the fluid flow channels 1514 and the fluid interface 1513 is the same, so that they are connected to each other one by one. Of course, the fluid flow channels 1514 and the fluid interface 1513 can also be connected one-to-many or many-to-one, which is not limited in this embodiment. The fluid flow channel 1514 connects the fluid interface 1513 and the corresponding liquid inlet pipe 1524b or liquid outlet pipe 1524a. For example, please refer to Figure 4In one example, the gun tip body 1511 defines two fluid interfaces 1513, one in and one out. At this time, two parallel fluid flow channels 1514 are also defined in the gun tip body 1511. One fluid flow channel 1514 connects one fluid interface 1513 with the liquid inlet pipe 1524b, and the other fluid flow channel 1514 connects the other fluid interface 1513 with the liquid outlet pipe 1524a.

[0115] It is easy to understand that, compared with the gun tip body 1511 provided in the previous embodiment with the liquid inlet cooling cavity 1511b and the liquid outlet cooling cavity 1511a, the structure of the gun tip body 1511 in this embodiment is simpler and more reliable.

[0116] As before, the first cable cooling channel 1524c and the second cable cooling channel 1524d in this embodiment can be constructed as a pipe structure with no protrusions on the inner wall. In this case, the material of the pipe structure can be constructed as metal, so that heat conduction is faster. For example, in one embodiment, the first cable cooling channel 1524c is constructed as a thin-walled metal tube, and the wall thickness of the thin-walled metal tube is b, and b satisfies: 0.3mm≤b≤1mm.

[0117] See also Figure 5 Alternatively, the first cable cooling channel 1524c and the second cable cooling channel 1524d in this embodiment can also be constructed as a cavity structure formed by the aforementioned sub-phase change filler bodies being spaced apart. Specifically, the first cable cooling channel 1524c is constructed as a thin-walled metal tube for the coolant to flow into the charging gun head 151, and the second cable cooling channel 1524d is constructed as a cavity structure formed by the third sub-phase change filler body 1523b being spaced apart and for the coolant to return to the charging pile. The coolant can enter the gun head cooling cavity 1511c more quickly to cool the charging terminal 1512 with a larger heat generation, and then return to cool the charging cable 152, thereby improving the cooling effect.

[0118] In the third aspect, the present invention also provides a charging device. The charging device includes a thermal management module and a charging gun assembly, and the fluid pipeline of the charging gun assembly is connected to the thermal management module. The specific structure of the charging gun assembly refers to the above embodiment. Since the charging gun assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the thermal management module is used to provide liquids such as coolant and insulating heat exchange fluid, and has a driving component for driving the liquid to flow through the fluid pipeline.

[0119] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A charging cable, characterized in that: include: At least one wire core group, the wire core group comprising at least one wire core and an insulating layer sleeved on the radial outer side of the at least one wire core, and gaps are provided between adjacent wire core groups; A protective layer is sleeved on the radial outer sides of all the wire core groups, and the protective layer is spaced apart from the wire core groups; as well as A cable phase change module, the cable phase change module is filled in the gap between the wire core group and the protective layer and the gap between adjacent wire core groups, the cable phase change module defines at least one fluid conduit extending along the wiring direction of the charging cable and penetrating the charging cable, and the material of the cable phase change module includes a phase change material; The cable phase change module includes a plurality of first sub-phase change filling bodies arranged in sequence and spaced apart along the wiring direction of the charging cable, and the first sub-phase change filling bodies have a first through hole, so that the cavities between any adjacent two of the plurality of first sub-phase change filling bodies are connected through the first through hole to form the fluid pipeline.

2. The charging cable according to claim 1, characterized in that: At least two fluid pipes are arranged in the cable phase change module, and two of the at least two fluid pipes form a group, one of the fluid pipes in a group is a liquid inlet pipe, and the other is a liquid outlet pipe; Among them, the cable phase change module includes a plurality of second sub-phase change filling bodies arranged in sequence along the wiring direction of the charging cable, and the second sub-phase change filling bodies have a second through hole, so that the cavities between any adjacent two of the plurality of second sub-phase change filling bodies are connected through the second through hole to form the liquid inlet pipe, and the liquid outlet pipe of the pipe structure is arranged in the cable phase change module.

3. The charging cable according to claim 2, characterized in that: The material of the liquid outlet pipe is a polymer thermal insulation material; or, the liquid outlet pipe is constructed as a thin-walled metal pipe, and the wall thickness of the thin-walled metal pipe is b, and b satisfies: 0.3mm≤b≤1mm.

4. The charging cable according to claim 1, characterized in that: The fluid conduits include two groups, each group of the fluid conduits includes at least one fluid conduit, and the two groups of the fluid conduits are symmetrically and spaced apart on both sides of an axial plane of the charging cable; On a radial plane of the charging cable, all the wire core groups are dispersedly arranged in a region of the protective layer except the fluid conduit.

5. The charging cable according to claim 4, characterized in that: The at least one wire core group includes a battery charging positive wire, a battery charging negative wire, a low voltage auxiliary positive wire, a low voltage auxiliary negative wire, a first communication wire, a second communication wire, a first charging connection wire, a second charging connection wire, a ground wire, an emergency power supply positive wire, an emergency power supply negative wire, a first emergency power supply communication wire, a second emergency power supply communication wire and an emergency power supply ground wire.

6. The charging cable according to claim 5, characterized in that: The battery charging positive line and the battery charging negative line are symmetrical to each other along a first direction and are arranged at intervals on both sides of the central axis of the charging cable; On a radial plane of the charging cable, a portion of the low-voltage auxiliary positive line, the low-voltage auxiliary negative line, the first communication line, the second communication line, the first charging connection line, the second charging connection line, and the grounding line are arranged in a radially outer region of the battery charging positive line, and another portion is arranged in a radially outer region of the battery charging negative line; The emergency power positive line and the emergency power negative line are both arranged between the battery charging positive line and the battery charging negative line, and the emergency power positive line and the emergency power negative line are symmetrical to each other along the second direction and are arranged at intervals on both sides of the central axis; on the radial plane of the charging cable, the second direction is the direction of the axial plane, and the first direction is perpendicular to the second direction; A portion of the first emergency power communication line, the second emergency power communication line and the emergency power grounding line is arranged between the central axis and the battery charging positive line, and another portion is arranged between the central axis and the battery charging negative line.

7. The charging cable according to claim 1, characterized in that: The protective layer is configured as a metal layer, a plastic layer, or a plastic layer with a metal braid.

8. The charging cable according to any one of claims 1 to 7, characterized in that: The phase change material is a solid-solid phase change material.

9. A charging gun assembly, characterized in that: include: Charging gun head; as well as A charging cable, wherein the charging cable is connected to the charging gun head, and the charging cable is constructed as the charging cable according to any one of claims 1 to 8.

10. The charging gun assembly according to claim 9, characterized in that: The charging gun head has a fluid interface; Wherein, at least part of the fluid conduit of the charging cable is in communication with the fluid interface.

11. The charging gun assembly according to claim 10, characterized in that: There are at least two fluid interfaces; The charging gun head comprises: A gun tip body, wherein the gun tip body has a liquid inlet cooling cavity and a liquid outlet cooling cavity, at least one of the fluid interfaces is in communication with the liquid inlet cooling cavity, and at least one of the fluid interfaces is in communication with the liquid outlet cooling cavity; and A charging terminal, the charging terminal is arranged on the gun head body, and the charging terminal passes through the liquid inlet cooling cavity or the liquid outlet cooling cavity to be connected with the corresponding wire core group, or the charging terminal extends into the liquid inlet cooling cavity or the liquid outlet cooling cavity to be connected with the corresponding wire core group; Wherein, the fluid pipelines in at least part of the fluid pipelines are grouped in pairs, and in each group of the fluid pipelines, one fluid pipeline is connected to the liquid inlet cooling cavity, and the other fluid pipeline is connected to the liquid outlet cooling cavity.

12. The charging gun assembly according to claim 10, characterized in that: The remaining fluid pipelines except the at least part of the fluid pipelines are grouped in pairs, and in each group of the remaining fluid pipelines, one end of one remaining fluid pipeline close to the charging gun head is connected to one end of another remaining fluid pipeline close to the charging gun head.

13. The charging gun assembly according to claim 12, characterized in that: The charging gun head comprises: a gun tip body, wherein the gun tip body has a gun tip cooling cavity and at least two fluid flow channels, one end of the fluid flow channel is connected to the fluid interface, and the other end of the fluid flow channel is connected to the fluid pipeline in the at least part of the fluid pipeline; and A charging terminal, wherein the charging terminal is disposed on the gun head body, and the charging terminal penetrates the gun head cooling cavity and is connected to the wire core group, or the charging terminal extends into the gun head cooling cavity and is connected to the wire core group; Among them, in each group of the remaining fluid pipelines, one end of one of the remaining fluid pipelines close to the charging gun head is connected to another end of the remaining fluid pipeline close to the charging gun head through the gun head cooling cavity.

14. The charging gun assembly according to any one of claims 9 to 13, characterized in that: The fluid pipeline is used for the insulating heat exchange fluid to flow through; the material of the insulating heat exchange fluid is deionized water, electronic fluoride liquid, hydrocarbons, esters or silicone oils.

15. A charging device, characterized in that: include: Thermal management module; as well as The charging gun assembly according to any one of claims 9 to 14, wherein the fluid conduit of the charging gun assembly is in communication with the thermal management module.

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