Charging cable and charging gun assembly

Abstract

The utility model discloses a charging cable and a charging gun assembly, and relates to the technical field of charging. A charging cable comprises a protection layer in which a cable cavity extending along the wiring direction of the charging cable is defined; the cable cores are arranged in the cable cavity, and gaps are formed between any two cable cores and between the cable cores and the protective layer at intervals; and the cable phase change module is filled in the gap, and at least one fluid pipeline which extends along the wiring direction of the charging cable and penetrates through the charging cable is defined in the cable phase change module. According to the utility model, the temperature rise of the charging cable is smaller, so that the supported charging power can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, and particularly relates to a charging cable and a charging gun assembly. Background Art

[0002] With the popularization of electric vehicles such as new energy vehicles, eVTOL (Electric Vertical Take off and Landing), and new energy ships, which mainly use electric energy as the power, charging equipment such as charging piles plays an increasingly important role and has increasingly high indicators, such as the continuous improvement of the charging speed requirement.

[0003] In the related art, a large amount of heat is generated during the rapid charging of the battery pack of an electric vehicle by the charging cable of the charging pile, thereby affecting the charging speed. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a charging cable and a charging gun assembly, aiming to solve the technical problem that a large amount of heat is generated by the charging cable in the related art, which affects the charging speed.

[0005] To achieve the above purpose, a charging cable proposed by the utility model includes:

[0006] A protective layer, within which a cable cavity extending along the wiring direction of the charging cable is defined;

[0007] A plurality of wire cores, which are arranged in the cable cavity, and gaps are formed between any two wire cores and between the wire cores and the protective layer;

[0008] A cable phase change module, which is filled in the gaps, and at least one fluid pipeline extending along the wiring direction and penetrating the charging cable is defined within the cable phase change module.

[0009] In one embodiment, the cable phase change module includes a plurality of first sub-phase change bodies arranged at intervals in sequence along the wiring direction, and the first sub-phase change bodies have first through holes, so that the cavities between any two adjacent first sub-phase change bodies among the plurality of first sub-phase change bodies are all communicated through the first through holes to form a fluid pipeline.

[0010] In one embodiment, at least two fluid pipelines are arranged in the cable phase change module, and two of the at least two fluid pipelines form a group. One of the fluid pipelines 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 bodies arranged at intervals in sequence along the wiring direction, and the second sub-phase change bodies have second through holes, so that the cavities between any two adjacent second sub-phase change bodies among the plurality of second sub-phase change bodies are all communicated through the second through holes to form a liquid inlet pipe, and a liquid outlet pipe with a pipe fitting structure is arranged in the cable phase change module.

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

[0013] In one embodiment, the liquid outlet pipe is configured as a thin-walled metal pipe, and 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 pipelines include two groups, each group of fluid pipelines includes at least one fluid pipeline, and the two groups of fluid pipelines are symmetrically and spaced apart on both sides of an axial plane of the charging cable;

[0015] In the plane where the charging cable is located radially, all the wire cores are dispersedly arranged in the cross-sectional area of the cable cavity in the area other than all the fluid pipelines.

[0016] In one embodiment, the plurality of wire cores include:

[0017] A standard wire core group, the standard 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, and a ground wire;

[0018] A low-voltage emergency wire core group, the low-voltage emergency wire core group includes an emergency power positive wire, an emergency power negative wire, a first emergency power communication wire, a second emergency power communication wire, and an emergency power ground wire.

[0019] In one embodiment, the battery charging positive wire and the battery charging negative wire are symmetrically and spaced apart from each other along a first direction on both sides of the central axis of the charging cable;

[0020] In the plane where the charging cable is located radially, a part of the low-voltage auxiliary positive wire, the low-voltage auxiliary negative wire, the first communication wire, the second communication wire, the first charging connection wire, the second charging connection wire, and the ground wire is arranged in the radially outer area of the battery charging positive wire, and another part is arranged in the radially outer area of the battery charging negative wire;

[0021] The emergency power positive wire and the emergency power negative wire are both arranged between the battery charging positive wire and the battery charging negative wire, and the emergency power positive wire and the emergency power negative wire are symmetrically and spaced apart from each other along a second direction on both sides of the central axis; in the plane where the charging cable is located radially, the second direction is the direction of the axial plane, and the first direction is perpendicular to the second direction;

[0022] A part of the first emergency power supply communication line, the second emergency power supply communication line, and the emergency power supply ground wire is disposed between the central axis and the battery charging positive line, and the other part is disposed between the central axis and the battery charging negative line.

[0023] In one embodiment, the protective layer is configured as a metal layer, a plastic layer, or a plastic layer with a metal braided mesh.

[0024] In one embodiment, the material of the cable phase change module includes a phase change material; the phase change material is a solid-solid phase change material.

[0025] In a second aspect, the present utility model further provides a charging gun assembly, including:

[0026] A charging gun head; and

[0027] A charging cable, the charging cable is connected to the charging gun head, and the charging cable is configured as the charging cable as described above.

[0028] In one embodiment, the charging gun head has a fluid interface;

[0029] Wherein, at least part of the fluid pipeline of the charging cable is in communication with the fluid interface.

[0030] In one embodiment, there are at least two fluid interfaces;

[0031] The charging gun head includes:

[0032] A gun head body, the gun head body has an inlet liquid cooling cavity and an outlet liquid cooling cavity, at least one fluid interface is in communication with the inlet liquid cooling cavity, and at least one fluid interface is in communication with the outlet liquid cooling cavity; and

[0033] Charging terminals, the charging terminals are disposed on the gun head body, and the charging terminals penetrate through the inlet liquid cooling cavity or the outlet liquid cooling cavity to be connected to the corresponding wire cores, or the charging terminals extend into the inlet liquid cooling cavity or the outlet liquid cooling cavity to be connected to the corresponding wire cores;

[0034] Wherein, 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 in communication with the inlet liquid cooling cavity, and the other fluid pipeline is in communication with the outlet liquid cooling cavity.

[0035] In one embodiment, the remaining fluid pipelines other than at least part of the fluid pipelines are grouped in pairs, and in each group of the remaining fluid pipelines, one of the remaining fluid pipelines at the end close to the charging gun head is in communication with the other of the remaining fluid pipelines at the end close to the charging gun head.

[0036] In one embodiment, the charging gun head includes:

[0037] The gun head body, within which there is a gun head cooling cavity and at least two fluid flow channels. One end of each fluid flow channel is communicated with a fluid interface, and the other end of each fluid flow channel is communicated with a fluid pipe in at least part of the fluid pipes; and

[0038] The charging terminal is arranged on the gun head body, and the charging terminal penetrates through the gun head cooling cavity to be connected with the wire core, or the charging terminal extends into the gun head cooling cavity to be connected with the wire core;

[0039] Wherein, in each group of the remaining fluid pipes, one of the remaining fluid pipes is communicated with the other remaining fluid pipe near the charging gun head through the gun head cooling cavity at one end close to the charging gun head.

[0040] In one embodiment, the fluid pipe allows an insulating heat exchange fluid to flow through.

[0041] In one embodiment, the insulating heat exchange fluid is made of deionized water, electronic fluorinated liquid, hydrocarbon, ester or silicone oil.

[0042] Compared with ordinary cables using plastic or polymer materials as fillers, the technical solution of the present utility model constructs the filler of the charging cable into a cable filling module made of a phase change material. Since the phase change material can absorb heat, the temperature of the charging cable can be effectively reduced, and the phenomenon of overheating of the charging cable during charging can be avoided.

[0043] In addition, the technical solution of the present utility model also arranges a fluid pipe for the coolant to flow through in the cable phase change module. In this way, during the process of the coolant flowing through the fluid pipe, the coolant can cool the cable phase change module, thereby improving 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 dissipated by the wire core. That is, under the premise of the same cross-sectional area, the temperature rise of the charging cable per unit time is smaller. Thus, under the premise that the charging power of the charging gun is determined, that is, the heat generation is determined, the cooling purpose of the charging cable can be achieved by a smaller amount of phase change material, so that the outer diameter of the charging cable can be reduced and the weight of the charging cable can be reduced. In other words, through the above method, the charging cable can support a larger charging power, and further improve the fast charging speed.

[0044] In addition, in the charging cable of the present utility model, in addition to the standard wire core group required for the standard charging interface, there is also a low-voltage emergency wire core group, so that the charging function for the emergency charging power supply can also be provided.

[0045] In addition, compared with air cooling and traditional liquid cooling plate cooling, the coolant of the present utility model is an insulating heat exchange fluid, which can adopt immersion cooling for the wire core and the charging terminal, etc. Its heat dissipation area is larger and the heat dissipation effect is better, so it can support a larger charging power.

[0046] In addition, the phase change material of the charging cable is set in sections, significantly reducing the cable weight. Brief Description of the Drawings

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0048] Figure 1 Schematic cross-sectional view of an embodiment of the charging cable provided by the present invention;

[0049] Figure 2 Schematic diagram of the pipeline of an embodiment of the charging cable provided by the present invention;

[0050] Figure 3 Schematic structural diagram of an embodiment of the charging gun assembly provided by the present invention;

[0051] Figure 4 Schematic structural diagram of another embodiment of the charging gun assembly provided by the present invention;

[0052] Figure 5 Schematic diagram of the cable cooling channel of an embodiment of the charging cable provided by the present invention.

[0053] Explanation of the reference numerals in the drawings:

[0054] 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 flow-through pipeline; 152. Charging cable; 1521. Core; 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; 1521a9. Grounding wire; 1521b1. Emergency power positive line; 1521b2. Emergency power negative line; 1521b3. First emergency power communication line; 1521b4. Second emergency power communication line; 1521b5. Emergency power grounding wire; 1522. Protective layer; 1523. Cable phase change module; 1523a. Second sub-phase variant; 1523b. Third sub-phase variant; 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.

[0055] The realization, functional features and advantages of the purpose of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0056] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0057] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0058] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0059] With the popularization of electric vehicles such as new energy vehicles, eVTOLs, and new energy ships, which mainly use batteries as power, charging devices such as charging piles play an increasingly important role and have increasingly high indicators as battery charging devices. Specifically, the demand for fast charging of electric vehicles is increasing continuously, and the single-gun power of charging piles is getting larger and larger, which means that the weight and size of charging piles and charging guns are also increasing continuously with the power.

[0060] To solve the problems of the size and weight of the charging gun, there are the following technical routes in the related art: adopting a high-voltage system, increasing the voltage at the same power to reduce the charging current, so as to reduce the size of cables, plugs, etc. to reduce the weight and volume.

[0061] However, when charging electric vehicles, especially during fast charging, the high voltage causes a large amount of heat to be generated in the charging cable of the charging pile during the fast charging process, thus affecting the charging speed.

[0062] For this reason, the present utility model provides a solution. By constructing a cable filling module with a phase change material for the filler of the charging cable, since the phase change material can absorb heat, the temperature of the charging cable can be effectively reduced, avoiding the phenomenon of overheating of the charging cable during charging. In addition, a fluid pipeline for the coolant to flow through is provided in the cable phase change module. The coolant not only directly performs immersion cooling on the wire core, but also can exchange heat with the cable phase change module, thus significantly improving the heat dissipation effect. In this way, the charging cable can support charging with a larger power, and further improve the fast charging speed.

[0063] The following further elaborates on the technical concept of the present utility model in combination with some specific embodiments.

[0064] Please refer to Figure 1, the present utility model proposes a charging cable. The charging cable 152 includes a protective layer 1522, a plurality of wire cores 1521 (1521a1, 1521a2, 1521a3, 1521a4, 1521a5, 1521a6, 1521a7, 1521a8, 1521a9, 1521b1, 1521b2, 1521b3, 1521b4, 1521b5) and a cable phase change module 1523. A cable cavity extending along the wiring direction of the charging cable 152 is defined within the protective layer 1522; the wire cores 1521 are disposed within the cable cavity, and gaps are formed by spacing between any two wire cores 1521 and between the wire cores 1521 and the protective layer 1522. The cable phase change module 1523 is filled in the gaps, and at least one fluid pipeline 1524 extending along the wiring direction of the charging cable 152 and penetrating the charging cable 152 is defined within the cable phase change module 1523, and the material of the cable phase change module 1523 includes a phase change material.

[0065] The protective layer 1522 is an external protection structure of the charging cable, and it can be 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 as to provide better mechanical properties on the basis of meeting the cable weight index.

[0066] A cable cavity is defined within the protective layer 1522, and a plurality of wire cores 1521 are arranged within the cable cavity. The gaps between any adjacent wire cores 1521 and between the wire cores 1521 and the protective layer 1522 are filled with a phase change material to form the cable phase change module 1523. Of course, an insulating layer can be provided on the radial surface of each wire core 1521 to further prevent phenomena such as electric leakage between the wire core 1521 and the coolant.

[0067] The material of the cable phase change module 1523 includes a phase change material. Thus, during the charging process, compared with using plastic or polymer materials to fill the gaps 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 the phenomenon of overheating of the charging cable 152 during charging.

[0068] In addition, in this embodiment, a fluid pipe 1524 through which a coolant flows is further provided in the cable phase change module 1523, that is, the fluid pipe 1524 extends along the routing direction of the charging cable 152 and penetrates the charging cable 152. In this way, during 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 dissipated by the wire core. That is, under the condition of the same cross-sectional area, the temperature rise per unit time of the charging cable 152 in this embodiment is smaller. In this way, on the premise that the power of the charging gun is determined, that is, the heat generation amount is determined, the cooling purpose of 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.

[0069] In addition, a part of the surface of the wire core 1521 can be formed as the pipe wall of the fluid pipe 1524, or the wire core 1521 is completely arranged inside the fluid pipe 1524. At this time, the coolant in the fluid pipe 1524 can directly contact the wire core 1521 for immersion cooling. It is not difficult to see that compared with the air cooling and liquid cooling methods, the immersion cooling of the wire core 1521 has a larger heat dissipation area and better heat dissipation effect. Of course, at this time, since the outermost layer of the wire core 1521 is an insulating layer, the coolant is insulated from the wire core 1521.

[0070] It is not difficult to see that in this embodiment, compared with ordinary cables using plastics or polymer materials as fillers, in this embodiment, the filler of the charging cable is constructed of a phase change material. Since the phase change material can absorb heat, the temperature of the charging cable is effectively reduced, and the phenomenon of overheating of the charging cable during charging is avoided. In addition, a fluid pipe for the coolant to flow through is further provided in the cable phase change module. The coolant not only directly performs immersion cooling on the wire core 1521, but also exchanges heat with the cable phase change module 1523, thereby significantly improving the heat dissipation effect. In this way, the charging cable can support charging at a higher power, and further improve the fast charging speed.

[0071] In one embodiment, the fluid pipe 1524 can be constructed as a cavity extending along the routing direction of the charging cable 152, and the inner surface of the cavity has no protrusions, which is beneficial to the rapid passage of the coolant through the charging cable 152 and the rapid filling of the charging cable, avoiding waiting for a long time for the coolant to fill the fluid pipe 1524 during charging.

[0072] Alternatively, in one embodiment, the cable phase change module 1523 includes a plurality of first sub-phase change bodies sequentially arranged at intervals along the wiring direction of the charging cable 152, and the first sub-phase change bodies have first through holes, so that the cavities between any two adjacent first sub-phase change bodies among the plurality of first sub-phase change bodies are communicated through the first through holes to form a fluid pipeline 1524.

[0073] In this way, for any fluid pipeline 1524, in the area where the phase change material forms the first sub-phase change body, the phase change material can fix the internal wire core 1521 and the external protective layer 1522, and absorb the heat generated by the wire core 1521 during charging. In the area where the phase change material is not filled: the outer wall of the wire core 1521, the inner wall of the protective layer 1522, and the opposite side walls of the two first sub-phase change bodies jointly enclose a cavity, which is used for the coolant to flow through, and the adjacent cavities are communicated through the first through holes reserved in the first sub-phase change bodies. 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 1521 and the external protective layer 1522. Of course, the segment spacing of the first sub-phase change bodies should be reasonable. Too long a spacing may make it difficult to support the structure of the charging cable 152, and the internal wire core will shake during charging.

[0074] It is not difficult to see that in this embodiment, the phase change materials are arranged at intervals in the wiring direction of the cable. Therefore, compared with ordinary charging gun cables, the weight is significantly reduced and the heat dissipation effect of the cable is improved.

[0075] Please refer to Figure 1 and Figure 2 In one embodiment, at least two fluid pipelines 1524 are arranged in the cable phase change module 1523, and two of the at least two fluid pipelines 1524 are taken as a group. One of the fluid pipelines 1524 in a group is an inlet pipe 1524b, and the other is an outlet pipe 1524a; wherein, the cable phase change module 1523 includes a plurality of second sub-phase change bodies 1523a sequentially arranged at intervals along the wiring direction of the charging cable 152, and the second sub-phase change bodies 1523a have second through holes, so that the cavities between any two adjacent second sub-phase change bodies 1523a among the plurality of second sub-phase change bodies 1523a are communicated through the second through holes to form the inlet pipe 1524b, and an outlet pipe 1524a with a pipe fitting structure is arranged in the cable phase change module 1523.

[0076] In this embodiment, the fluid pipes 1524 in the cable phase change module 1523 are arranged in at least two and grouped in pairs. One of a pair is the liquid outlet pipe 1524a, which is used for the coolant to flow into an electric vehicle such as an eVTOL for charging. The liquid outlet pipe 1524a can be configured as a pipe fitting that penetrates the charging cable 152 along the wiring direction of the charging cable 152, and its inner wall surface has no protrusions, so as to facilitate the rapid passage of the coolant through the charging cable 152 and into the eVTOL to cool the battery pack, or reach the charging gun head to cool the charging terminal 1512.

[0077] It is easy to understand that the faster the flow rate of the coolant, the less heat exchange between the coolant and other components in the charging cable 152, so that the temperature of the coolant can be effectively prevented from changing significantly, which is conducive to ensuring that the temperature difference between the coolant and the battery cells meets the requirements of heat dissipation after entering the battery cavity of the eVTOL.

[0078] The other is the liquid inlet pipe 1524b, which is used for the coolant to return from the eVTOL to the charging pile, or for the coolant at the charging gun head 151 to return to the charging pile. As mentioned above, for each fluid pipe 1524, in the area where the phase change material forms the second sub-phase variant 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. In the area where no phase change material is filled: the outer wall of the wire core 1521, the inner wall of the protective layer 1522, and the opposite side walls of the two second sub-phase variants 1523a jointly enclose a cavity, which is used for the coolant to flow through, and adjacent cavities are connected through the second through holes reserved in the second sub-phase variant 1523a. Thus, under the action of the pressure provided by the pump, the coolant will fill each cavity in the charging cable 152, so as to play a role in supporting the cable structure and effectively fixing the internal wire core and the external protective layer 1522. In addition, the coolant in the cavity can also absorb the heat generated by the wire core 1521 during charging. Compared with the inner wall of the liquid outlet pipe 1524a having no protrusions, due to the spaced arrangement of the second sub-phase variants 1523a and the connection of adjacent second sub-phase variants 1523a through the second through holes, the flow channel cross-section of the liquid inlet pipe 1524b shrinks at each second through hole, so that the flow channel cross-section changes violently 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.

[0079] 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 slowly flow in the charging cable 152 to fully absorb the heat of the wire core 1521, so as to ensure the thermal management effect of the charging cable 152 itself.

[0080] In one embodiment, to further reduce the heat exchange between the coolant in the liquid outlet pipe 1524a and the wire core 1521, the material of the liquid outlet pipe 1524a is a polymer heat-insulating material. Of course, in some other embodiments, 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. Further, the liquid outlet pipe 1524a is configured as a thin-walled metal pipe, and the wall thickness of the thin-walled metal pipe is b, where b satisfies: 0.3 mm ≤ b ≤ 1 mm. In addition, the material of the liquid outlet pipe 1524a can be selected according to specific requirements.

[0081] In one embodiment, the fluid pipes 1524 include two groups, and each group of fluid pipes 1524 includes at least one fluid pipe. The two groups of fluid pipes 1524 are symmetrically and spaced apart on both sides of an axial plane of the charging cable; in the plane where the charging cable is located radially, all the wire cores 1521 are distributed dispersedly in the cross-sectional area of the cable cavity except for the areas where all the fluid pipes 1524 are located.

[0082] Specifically, please refer to Figure 1 , Figure 1 The dotted line in is an axial plane. Since the fluid pipes 1524 are 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. In the plane where the charging cable is located radially, in the cross-sectional area of the cable cavity except for the areas where all the fluid pipes 1524 are located, such as the area between the two groups of fluid pipes 1524, a plurality of wire cores 1521 are distributed approximately evenly.

[0083] It can be easily seen that in this embodiment, all the wire cores 1521 are distributed dispersedly in the cross-sectional area of the cable cavity except for the areas where all the fluid pipes 1524 are located, which can ensure the full utilization of the cable space, make the layout of the fluid pipes 1524 and each wire core 1521 more reasonable, and thus minimize the outer diameter size of the charging cable as much as possible.

[0084] In a specific example, the fluid pipes 1524 include 4, where 2 are arranged as a group on one side of an axial plane, and the other 2 are arranged as a group on the other side of the axial plane, and the distance between the two groups is much larger than the distance between the 2 fluid pipes 1524 within one group, so as to leave sufficient space for installing the wire cores 1521.

[0085] It can be understood that for electric vehicles such as eVTOLs, their fuselages not only include main power sources such as battery packs, but also include emergency low-voltage power sources. Generally speaking, the emergency low-voltage power source is a 28V low-voltage emergency battery, so that in the case of the failure of the main power source of the eVTOL, the emergency low-voltage power source can quickly take over and provide necessary power support for the key systems of the eVTOL (such as flight control systems, navigation systems, communication systems, etc.), ensuring that the eVTOL can land safely and stably. Generally speaking, when the emergency power source has not been used for a long time, it should also be charged and discharged once every period of time (such as every three months) to maintain battery activity and extend service life. Therefore, please refer to Figure 1 , in one embodiment, the plurality of wire cores include a standard wire core group and a low-voltage emergency wire core group. The standard wire core group includes a battery charging positive wire 1521a1, a battery charging negative wire 1521a2, a low-voltage auxiliary positive wire 1521a7, a low-voltage auxiliary negative wire 1521a8, a first communication wire 1521a3, a second communication wire 1521a4, a first charging connection wire 1521a5, a second charging connection wire 1521a6, and a ground wire 1521a9; the low-voltage emergency wire core group includes an emergency power positive wire 1521b1, an emergency power negative wire 1521b2, a first emergency power communication wire 1521b3, a second emergency power communication wire 1521b4, and an emergency power ground wire 1521b5.

[0086] Among them, the standard wire core group is a wire core group that cooperates with a standard charging interface. Taking the standard charging interface as a DC 9-pin layout area as an example, it includes DC power supply (DC+, DC-), vehicle and pile common ground (PE), message interaction communication (S+, S-), vehicle and pile connection confirmation communication (CC1, CC2), and low-voltage auxiliary power supply (A+, A-) for a total of 9 standard charging terminals. Among them, the DC+ terminal is connected to the battery charging positive wire 1521a1, the A+ terminal is connected to the low-voltage auxiliary positive wire 1521a7, the A- terminal is connected to the low-voltage auxiliary negative wire 1521a8, and the DC- terminal is connected to the battery charging negative wire 1521a1. The PE terminal is connected to the ground wire 1521a9, S+ is connected to the first communication wire 1521a3, the S- terminal is connected to the second communication wire 1521a4, the CC1 terminal is connected to the first charging connection wire 1521a5, and the CC2 terminal is connected to the second charging connection wire 1521a6.

[0087] The emergency power positive wire 1521b1 and the emergency power negative wire 1521b2 are used to establish a charging channel for the low-voltage emergency power source. The emergency power ground wire is used for grounding to ensure safety. The first emergency power communication wire 1521b3 and the second emergency power communication wire 1521b4 are used for charging devices such as charging piles to establish a communication channel with charged devices such as eVTOLs, so as to control charging parameters such as the charging current of the charging channel of the low-voltage emergency power source.

[0088] Of course, the corresponding charging plug or charging gun head, and the charging socket also have corresponding low-voltage emergency charging interfaces, so as to establish a charging channel for the emergency low-voltage power supply.

[0089] In this way, after the charging cable provided in this embodiment, it can not only charge the main power supply, but also charge the emergency low-voltage power supply, expanding the functions of the charging cable.

[0090] In a specific example, the battery charging positive line 1521a1 and the battery charging negative line 1521a2 are symmetric and spaced from each other along the first direction on both sides of the central axis of the charging cable; in the plane where the radial direction of the charging cable is located, a part 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 radially outer region of the battery charging positive line 1521a1, and another part is arranged in the radially outer region of the battery charging negative line 1521a2; the emergency power positive line 1521b1 and the emergency power negative line 1521b2 are both arranged between the battery charging positive line 1521a1 and the battery charging negative line 1521a2, and the emergency power positive line 1521b1 and the emergency power negative line 1521b2 are symmetric and spaced from each other along the second direction on both sides of the central axis; a part of the first emergency power communication line 1521b3, the second emergency power communication line 1521b4, and the emergency power grounding line 1521b5 are arranged between the central axis and the battery charging positive line 1521a1, and another part is arranged between the central axis and the battery charging negative line 1521a2.

[0091] Specifically, please refer to Figure 1 , the dotted line thereof is an axial plane, and the direction of this axial plane, that is, the normal direction, is the second direction. The direction perpendicular to the second direction is the first direction. For the convenience of understanding, in this embodiment, the direction where the first direction is located is taken as the left-right direction, and the direction where the second direction is located is taken as the up-down direction as an example for description.

[0092] The battery charging positive line 1521a1 is located on the left side of the central axis and is spaced from the central axis by a certain distance, and the grounding line 1521a9, the low-voltage auxiliary positive line 1521a7, and the low-voltage auxiliary negative line 1521a8 are arranged in its left outer region. The battery charging negative line 1521a2 is located on the right side of the central axis and is spaced from the central axis by a certain distance. And 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 region of the battery charging negative line 1521a1.

[0093] The positive emergency power line 1521b1 and the negative emergency power line 1521b2 are respectively located on the upper and lower sides of the central axis, and in the area between their right sides and the negative battery charging line 1521a1, a first emergency power communication line 1521b3 and a second emergency power communication line 1521b4 are arranged, and in the area between their left sides and the positive battery charging line 1521a1, an emergency power ground line 1521b5 is arranged.

[0094] It is not difficult to see that in this layout method, not only the internal space of the charging cable is fully utilized, but also multiple cores 1521 in the low-voltage emergency core group are concentratedly arranged, which is convenient for later maintenance.

[0095] 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. This solid-solid phase change material can still maintain its shape after absorbing heat. It should be noted that in the solid state, the solid-solid phase change material can absorb or release heat during the process of changing from one crystal structure (phase state) to another crystal structure (phase state). During the phase change process of this material, the material remains in the solid state and the volume change is relatively small, so that it can not only store heat, but also ensure the structure of the supporting 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 an organic polymer and paraffin.

[0096] In a second aspect, the present invention also 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 the above all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0097] It can be understood that when the charging pile is charging, the charging device can cool the battery pack in an electric vehicle such as an eVTOL at the same time. That is, the charging pile needs to provide coolant to the electric vehicle. Therefore, 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 communicated with the fluid interface 1513.

[0098] In this embodiment, in addition to having a charging interface, the charging gun head 151 is also provided with a fluid interface 1513. The fluid interface 1513 is used to communicate with the battery thermal management system of electric vehicles such as eVTOLs. In addition, the fluid interface 1513 communicates with at least a part of the fluid pipeline 1524 of the charging cable 152, so that the coolant flows through the aforementioned at least a part of the fluid pipeline 1524, and then enters the electric vehicle such as eVTOL through the fluid interface 1513.

[0099] It is not difficult to see that by integrating the fluid pipeline 1524 for the coolant to flow through into the charging cable 152, when the electric vehicle such as eVTOL is charging and the charging gun is plugged into the electric vehicle such as eVTOL, not only an electric energy channel is established but also a coolant channel is established, thus reducing the plugging steps during the charging of the eVTOL, and further improving the charging efficiency of the eVTOL.

[0100] Please refer to 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. An inlet liquid cooling cavity 1511b and an outlet liquid cooling cavity 1511a are provided in the gun head body 1511. At least one fluid interface 1513 communicates with the inlet liquid cooling cavity 1511b, and at least one fluid interface 1513 communicates with the outlet liquid cooling cavity 1511a; the charging terminal 1512 is arranged on the gun head body 1511, and the charging terminal 1512 penetrates through the inlet liquid cooling cavity 1511b or the outlet liquid cooling cavity 1511a to be connected with the corresponding wire core 1521, or the charging terminal 1512 extends into the inlet liquid cooling cavity 1511b or the outlet liquid cooling cavity 1511a to be connected with the corresponding wire core 1521. Among them, the fluid pipelines 1524 in at least a part of the fluid pipelines 1524 are grouped in pairs. In each group of fluid pipelines 1524, one fluid pipeline 1524 communicates with the inlet liquid cooling cavity 1511b, and the other fluid pipeline 1524 communicates with the outlet liquid cooling cavity 1511a.

[0101] 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 according to a preset layout. The charging terminal 1512 is assembled in the charging gun head 151, and one end of the charging terminal 1512 exposes from the head, while the other end extends towards the tail to be connected with the wire core 1521. It can be understood that the charging terminal 1512 can be connected to an electric wire for power transmission, or can be connected to a communication line for information transmission.

[0102] In a feasible implementation, the tail of the gun head main body 1511 also has a gun head phase change module made of a phase change material. The structure of the gun head phase change module is the same as that of the cable phase change module 1523, so that the two can cooperate.

[0103] At least a part of the aforementioned fluid pipes 1524. That is, the fluid pipes 1524 connected to the fluid interfaces 1513 are grouped in pairs, so as to form a combination of "one in and one out". Furthermore, in each group of fluid pipes 1524, one fluid pipe 1524 is connected to the liquid inlet cooling cavity 1511b, and the other fluid pipe 1524 is connected to the liquid outlet cooling cavity 1511a. Thus, in this embodiment, a liquid inlet cooling cavity 1511b and a liquid outlet cooling cavity 1511a are provided in the gun head main body 1511. And in the plane where the gun head main body 1511 is located radially, the liquid inlet cooling cavity 1511b and the liquid outlet cooling cavity 1511a are arranged side by side left and right. The liquid inlet cooling cavity 1511b is connected to the fluid interfaces 1513 in the liquid inlet direction among all the fluid interfaces 1513 and the "one in" fluid pipes 1524 (such as the liquid inlet pipe 1524b) in each group of "one in and one out". And the liquid outlet cooling cavity 1511a is connected to the fluid interfaces 1513 in the liquid outlet direction among all the fluid interfaces 1513 and the "one out" fluid pipes 1524 (such as the liquid outlet pipe 1524a) in each group of "one in and one out". In this way, the coolant before entering an electric vehicle such as an eVTOL stays temporarily in the liquid outlet cooling cavity 1511a, and the coolant leaving the eVTOL stays temporarily in the liquid inlet cooling cavity 1511b after entering from the fluid interface 1513. It is worth mentioning that in this embodiment, the fluid pipes 1524 connected to the fluid interfaces 1513 can be regarded as the liquid inlet pipes 1524b or the liquid outlet pipes 1524a.

[0104] A part of the plurality of charging terminals 1512 passes through the liquid inlet cooling cavity 1511b and is connected to the corresponding wire cores 1521, and the other part of the charging terminals 1512 passes through the liquid outlet cooling cavity 1511a and is connected to the corresponding wire cores 1521, so that each charging terminal 1512 in the charging gun head 151 is directly in contact with the coolant during operation and is cooled.

[0105] Alternatively, a part of the plurality of charging terminals 1512 extends into the liquid inlet cooling cavity 1511b, and the corresponding wire cores 1521 also extend into the liquid inlet cooling cavity 1511b, and the two are connected in the liquid inlet cooling cavity 1511b. Similarly, another part of the plurality of charging terminals 1512 extends into the liquid outlet cooling cavity 1511a, and the corresponding wire cores 1521 also extend into the liquid outlet cooling cavity 1511a, and the two are connected in the liquid outlet cooling cavity 1511a.

[0106] It is not difficult to see that when the charging cable in this embodiment conveys the coolant, it cools both the wire core 1521 in the charging cable 152 and the charging terminal 1512 of the charging gun head 151. Therefore, this embodiment provides cooling measures for all the key heat-generating components of the charging gun assembly during the charging process, so as to significantly improve the heat generation phenomenon of each key component during the charging process. Thus, through the cooling solution provided by this embodiment, the charging gun assembly can support a higher charging power ratio and reduce the charging time, that is, it can support a faster fast charging technology.

[0107] In one embodiment, the fluid pipeline 1524 allows an insulating heat exchange fluid to flow through. That is, the coolant is an insulating and non-flash-point coolant. In one embodiment, the material of the insulating heat exchange fluid is deionized water, electronic fluorinated liquid, hydrocarbon, ester or silicone oil. Thus, the coolant has the characteristics of high insulation, high specific heat capacity, high thermal conductivity, non-combustible, non-flash-point, non-toxic, and low chemical activity. Therefore, even if the coolant in this embodiment leaks, safety problems can be avoided. Optionally, in one implementation, the electronic fluorinated liquid is configured as hydrofluoroether or hydrofluoroolefin. Optionally, in one implementation, the hydrocarbon is configured as mineral oil or synthetic hydrocarbon oil, such as transformer oil. Optionally, in one implementation, the ester is configured as triglyceride or synthetic ester. Optionally, in one implementation, the silicone oil is configured as dimethyl silicone oil.

[0108] Thus, the coolant in this embodiment can directly contact the wire core in the charging cable 152 and the charging terminal 1512 of the charging gun head 151. Therefore, at the same power, since there is no need to design isolation measures (isolation between the coolant and the wire core and the charging terminal), the charging gun cable 152 and the charging gun head 151 are smaller in size and lighter in weight, improving the convenience of personnel operation.

[0109] Of course, since the cross-sectional shape of the charging gun head 151 is generally constructed as a symmetric figure, in this embodiment, the liquid inlet cooling cavity 1511b and the liquid outlet cooling cavity 1511a can be constructed as a symmetric structure, so as to make full use of the internal space of the charging gun head 151.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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. Alternatively, please refer toFigure 4 , in one embodiment, the charging gun head 151 includes: a gun head main body 1511 and charging terminals 1512. The gun head main body 1511 has a gun head cooling cavity 1511c and a fluid flow-through channel 1514. One end of the fluid flow-through channel 1514 communicates with a fluid interface 1513, and the other end of the fluid flow-through channel 1514 communicates with a fluid pipe 1524 (an inlet pipe 1524b or an outlet pipe 1524a) in at least a part of the aforementioned fluid pipes 1524; the charging terminals 1512 are arranged on the gun head main body 1511, and the charging terminals 1512 penetrate through the gun head cooling cavity 1511c to be connected with a wire core 1521, or the charging terminals 1512 extend into the gun head cooling cavity 1511c to be connected with the wire core 1521. In each group of the remaining fluid pipes, one end of a remaining fluid pipe close to the charging gun head communicates with one end of another remaining fluid pipe close to the charging gun head through the gun head cooling cavity 1511c.

[0115] In this embodiment, the gun head main body 1511 is not provided with an inlet cooling cavity 1511b and an outlet cooling cavity 1511a, but only one gun head cooling cavity 1511c. At this time, all the charging terminals 1512 penetrate through the gun head cooling cavity 1511c to communicate with the wire core 1521. Alternatively, the wire core 1521 extends into the gun head cooling cavity 1511c, and all the charging terminals 1512 extend into the gun head cooling cavity 1511c to communicate with the corresponding wire core 1521. And the first cable cooling channel 1524c and the second cable cooling channel 1524d both communicate with the gun head cooling cavity 1511c to achieve intercommunication. In this way, on the one hand, the coolant for cooling the charging terminals 1512 is the coolant dedicated to the charging cable itself, rather than the coolant transported to other places such as eVTOL or returned from other places, so as to ensure the cooling effect of each charging terminal 1512. On the other hand, the connection point of the first cable cooling channel 1524c and the second cable cooling channel 1524d is not in the charging cable 152, but at the charging gun head 151, thus simplifying the structure of the charging cable 152 and reducing the manufacturing cost.

[0116] In addition, a fluid flow-through channel 1514 is also defined in the gun head main body 1511. In one example, the number of the fluid flow-through channels 1514 is the same as that of the fluid interfaces 1513, so as to communicate with each other in a one-to-one correspondence. Of course, the fluid flow-through channels 1514 and the fluid interfaces 1513 can also be connected in a one-to-many or many-to-one manner, and this embodiment does not limit this. The fluid flow-through channel 1514 communicates the fluid interface 1513 with the corresponding inlet pipe 1524b or outlet pipe 1524a. As shown in 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.

[0117] 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.

[0118] 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.

[0119] 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 body. 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 body 1523b 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.

[0120] 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 specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A charging cable, characterized in that, Comprising: A protective layer, within which a cable cavity extending along the routing direction of the charging cable is defined; A plurality of wire cores, which are arranged within the cable cavity, and gaps are formed by spacing between any two of the wire cores and between the wire cores and the protective layer; A cable phase change module, which is filled in the gaps, and at least one fluid pipeline extending along the routing direction and penetrating the charging cable is defined within the cable phase change module.

2. The charging cable according to claim 1, characterized in that The cable phase change module includes a plurality of first sub-phase change bodies arranged at intervals in sequence along the routing direction, and the first sub-phase change bodies have first through holes, so that the cavities between any two adjacent first sub-phase change bodies among the plurality of first sub-phase change bodies are communicated through the first through holes to form the fluid pipeline.

3. The charging cable according to claim 1, wherein At least two fluid pipelines are arranged within the cable phase change module, and two of the at least two fluid pipelines are taken as a group. One of the fluid pipelines in a group is an inlet pipe, and the other is an outlet pipe; Wherein, the cable phase change module includes a plurality of second sub-phase change bodies arranged at intervals in sequence along the routing direction, and the second sub-phase change bodies have second through holes, so that the cavities between any two adjacent second sub-phase change bodies among the plurality of second sub-phase change bodies are communicated through the second through holes to form the inlet pipe, and the outlet pipe of a pipe fitting structure is arranged within the cable phase change module.

4. The charging cable according to claim 3, wherein The material of the outlet pipe is a polymer heat insulation material.

5. The charging cable according to claim 3, wherein The outlet pipe is configured as a thin-walled metal pipe, and the wall thickness of the thin-walled metal pipe is b, and b satisfies: 0.3 mm ≤ b ≤ 1 mm.

6. The charging cable according to claim 1, wherein The fluid pipelines include two groups, and each group of fluid pipelines includes at least one fluid pipeline. The two groups of fluid pipelines are symmetrically and spaced apart on both sides of an axial plane of the charging cable; On the plane in the radial direction of the charging cable, all the wire cores are dispersedly arranged in the cross-sectional area of the cable cavity in the area except all the fluid pipelines.

7. The charging cable according to claim 6, wherein The plurality of wire cores include: A standard wire core group, which 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, and a ground wire; A low-voltage emergency wire core group, which includes an emergency power positive wire, an emergency power negative wire, a first emergency power communication wire, a second emergency power communication wire, and an emergency power ground wire.

8. The charging cable according to claim 7, wherein, The battery charging positive wire and the battery charging negative wire are symmetrically and spaced apart from each other along a first direction on both sides of the central axis of the charging cable; On the plane in the radial direction of the charging cable, a part of the low-voltage auxiliary positive wire, the low-voltage auxiliary negative wire, the first communication wire, the second communication wire, the first charging connection wire, the second charging connection wire, and the ground wire is arranged in the radially outer area of the battery charging positive wire, and another part is arranged in the radially outer area of the battery charging negative wire; The positive emergency power line and the negative emergency power line are both arranged between the positive battery charging line and the negative battery charging line, and the positive emergency power line and the negative emergency power line are symmetric with each other along the second direction and are spaced apart on both sides of the central axis; in the plane in the radial direction 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 part of the first emergency power communication line, the second emergency power communication line, and the emergency power ground wire is arranged between the central axis and the positive battery charging line, and another part is arranged between the central axis and the negative battery charging line.

9. The charging cable according to claim 1, wherein The protective layer is configured as a metal layer, a plastic layer, or a plastic layer with a metal braided mesh.

10. The charging cable according to claim 1, characterized in that, The material of the cable phase change module includes a phase change material, and the phase change material is a solid-solid phase change material.

11. A charging gun assembly, characterized in that, Comprising: A charging gun head; And A charging cable, the charging cable is connected to the charging gun head, and the charging cable is configured as the charging cable according to any one of claims 1 to 10.

12. The charging gun assembly according to claim 11, wherein, The charging gun head has a fluid interface; Wherein, at least part of the fluid pipelines of the charging cable communicate with the fluid interface.

13. The charging gun assembly according to claim 12, characterized in that, There are at least two fluid interfaces; The charging gun head includes: A gun head main body, the gun head main body has a liquid inlet cooling cavity and a liquid outlet cooling cavity, at least one of the fluid interfaces communicates with the liquid inlet cooling cavity, and at least one of the fluid interfaces communicates with the liquid outlet cooling cavity; and Charging terminals, the charging terminals are arranged on the gun head main body, and the charging terminals penetrate through the liquid inlet cooling cavity or the liquid outlet cooling cavity to be connected to the corresponding wire cores, or the charging terminals extend into the liquid inlet cooling cavity or the liquid outlet cooling cavity to be connected to the corresponding wire cores; Wherein, the fluid pipelines in the at least part of the fluid pipelines are grouped in pairs, and in each group of fluid pipelines, one fluid pipeline communicates with the liquid inlet cooling cavity, and the other fluid pipeline communicates with the liquid outlet cooling cavity.

14. The charging gun assembly according to claim 12, characterized in that, The remaining fluid pipelines other than the at least part of the fluid pipelines are grouped in pairs, and in each group of the remaining fluid pipelines, one of the remaining fluid pipelines near one end of the charging gun head communicates with the other of the remaining fluid pipelines near one end of the charging gun head.

15. The charging gun assembly according to claim 14, wherein, The charging gun head includes: A gun head main body, the gun head main body has a gun head cooling cavity and at least two fluid flow channels, one end of the fluid flow channel communicates with the fluid interface, and the other end of the fluid flow channel communicates with the fluid pipelines in the at least part of the fluid pipelines; and Charging terminals, the charging terminals are arranged on the gun head main body, and the charging terminals penetrate through the gun head cooling cavity to be connected to the wire cores, or the charging terminals extend into the gun head cooling cavity to be connected to the wire cores; Wherein, in each group of the remaining fluid pipelines, one of the remaining fluid pipelines near one end of the charging gun head communicates with the other of the remaining fluid pipelines near one end of the charging gun head through the gun head cooling cavity.

16. The charging gun assembly according to any one of claims 11 to 15, characterized in that, The fluid pipeline allows an insulating heat exchange fluid to flow through; the insulating heat exchange fluid is made of deionized water, electronic fluorinated liquid, hydrocarbon, ester or silicone oil.

Images