Liquid-cooled wiring harness, connector assembly, charging gun, charging device, and vehicle

Abstract

A liquid-cooled wiring harness, a connector assembly, a charging gun, a charging device and a vehicle. The liquid-cooled wiring harness comprises a first cable, a second cable and an insulation tube. A liquid intake channel is provided in the first cable, and a liquid output channel is provided in the second cable. The first cable and the second cable are both arranged in the insulation tube, and the first cable is arranged closer to the insulation tube than the second cable.

Description

Liquid-cooled wire harness, connector assembly, charging gun, charging device and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411266096.6, filed on September 9, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of charging guns, and in particular to a liquid-cooled wire harness, a connector assembly, a charging gun, a charging device and a vehicle. BACKGROUND

[0003] At present, under the background of rapid development of new energy technology, the rapid charging of power batteries is the main restricting factor for long-distance cruising of new energy vehicles. SUMMARY

[0004] The present disclosure provides a liquid-cooled wire harness, a connector assembly, a charging gun, a charging device and a vehicle.

[0005] In a first aspect, a liquid-cooled wire harness is provided, which includes a first cable, a second cable and an insulation tube. A liquid inlet channel is arranged in the first cable, and a liquid outlet channel is arranged in the second cable. The first cable and the second cable are arranged in the insulation tube respectively, and the first cable is arranged closer to the insulation tube than the second cable.

[0006] In some embodiments, the liquid inlet channel and the liquid outlet channel are in communication.

[0007] In some embodiments, the outer surface temperature of the insulation tube is ≤70℃.

[0008] In some embodiments, the minimum radial dimension of the first cable from the inner wall of the insulation tube is smaller than the minimum radial dimension of the second cable from the inner wall of the insulation tube.

[0009] In some embodiments, the inner diameter of the insulation tube is greater than or equal to the sum of the outer diameters of at least two first cables and at least one second cable.

[0010] In some embodiments, the liquid-cooled wire harness further includes a liquid inlet tube, which is arranged close to the second cable or in contact with the second cable.

[0011] In some embodiments, the liquid inlet tube is in communication with the liquid outlet channel.

[0012] In some embodiments, the liquid inlet tube includes a heat-conducting portion, which wraps at least part of the second cable, and the heat-conducting portion is in contact with the second cable.

[0013] In some embodiments, the liquid-cooled wiring harness further includes a support member disposed inside the insulating tube to fix the position of each cable within the liquid-cooled wiring harness.

[0014] In some embodiments, the liquid cooling harness further includes a third cable, which is spaced apart from the first cable and the second cable.

[0015] In some embodiments, the liquid inlet channel and the liquid outlet channel are provided with a cooling medium, which is an insulating cooling medium.

[0016] In a second aspect, a connector assembly is provided, the connector assembly including the liquid-cooled wire harness described above.

[0017] In some embodiments, the connector assembly further includes liquid-cooled terminals that are electrically connected to at least one of the first cable or the second cable.

[0018] In some embodiments, the liquid-cooled terminal includes: a connector and a housing assembly, the housing assembly having a cooling cavity adapted to contain a cooling medium, the cooling cavity being in communication with the liquid inlet channel and the liquid outlet channel respectively; the connector and at least one of the first cable or the second cable are at least partially disposed within the cooling cavity, and the connector is electrically connected to at least one of the first cable or the second cable respectively.

[0019] In some embodiments, the connector includes a plug-in portion and a connecting portion connected to each other, the connecting portion being disposed inside the cooling cavity and the plug-in portion being disposed outside the cooling cavity; the connecting portion is provided with at least one cooling channel, both ends of which are connected to the cooling cavity.

[0020] In some embodiments, the connecting portion divides the cooling chamber into a first sub-cooling chamber and a second sub-cooling chamber, the liquid inlet channel is connected to the first sub-cooling chamber, and the liquid outlet channel is connected to the second sub-cooling chamber; one end of the cooling channel is connected to the first sub-cooling chamber, and the other end is connected to the second sub-cooling chamber.

[0021] In some embodiments, the connector assembly further satisfies one of the following: a plurality of spaced-apart baffles are provided on the side of the connecting portion facing the first sub-cooling cavity, or a plurality of spaced-apart baffles are provided on the side of the connecting portion facing the second sub-cooling cavity.

[0022] Thirdly, a charging gun is provided, including the liquid-cooled wiring harness or the connector assembly described above.

[0023] Fourthly, a charging device is provided, including the liquid-cooled wiring harness or the connector assembly described above.

[0024] In a fifth aspect, a vehicle is provided, comprising the liquid-cooled wiring harness or the connector assembly.

[0025] The present disclosure has the following advantages:

[0026] In the present disclosure, the liquid inlet channel is arranged in the first cable and the liquid outlet channel is arranged in the second cable, so that the liquid-cooled wiring harness can be filled with liquid cooling medium to achieve the cooling function. In this way, it is convenient to increase the charging current and ensure the charging efficiency. It can be understood that the temperature of the liquid outlet channel is higher than that of the liquid inlet channel. Since the first cable is arranged closer to the insulation pipe than the second cable, the liquid inlet channel can relieve the heat dissipation pressure of the center of the liquid-cooled wiring harness, which helps the outward transmission of the heat in the center of the liquid-cooled wiring harness, thereby achieving uniform distribution of the cross-sectional temperature of the liquid-cooled wiring harness. In this way, it is convenient to reduce the temperature of the insulation pipe, and further reduce the contact temperature of the liquid-cooled wiring harness. That is, the liquid-cooled wiring harness in the present disclosure can have a larger charging current. BRIEF DESCRIPTION OF DRAWINGS

[0027] FIG. 1 is a cross-sectional view of a liquid-cooled wiring harness according to some embodiments of the present disclosure;

[0028] FIG. 2 is a structural diagram of a liquid-cooled wiring harness according to some embodiments of the present disclosure;

[0029] FIG. 3 is a structural diagram of a connector assembly according to some embodiments of the present disclosure;

[0030] FIG. 4 is an assembly diagram of a plug-in part and a first cable and a second cable according to some embodiments of the present disclosure;

[0031] FIG. 5 is an exploded view of a plug-in part and a first cable and a second cable according to some embodiments of the present disclosure;

[0032] FIG. 6 is a cross-sectional view of a plug-in part and a first cable and a second cable according to some embodiments of the present disclosure;

[0033] FIG. 7 is a structural diagram of a plug-in part according to some embodiments of the present disclosure;

[0034] FIG. 8 is a structural diagram of a charging gun according to some embodiments of the present disclosure;

[0035] FIG. 9 is a structural diagram of a charging device according to some embodiments of the present disclosure;

[0036] FIG. 10 is a structural diagram of another charging device according to some embodiments of the present disclosure;

[0037] FIG. 11 is a structural diagram of an automobile according to some embodiments of the present disclosure; and

[0038] FIG. 12 is a structural diagram of another automobile according to some embodiments of the present disclosure.

[0039] FIG. 12 is a structural diagram of another automobile according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0040] In order to make the above features and advantages of the present disclosure more obvious and easy to understand, the present disclosure will be further described in detail below with reference to the drawings and specific embodiments.

[0041] The terms "first", "second" in the description and claims of the present disclosure can explicitly or implicitly include one or more features. In the description of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0042] In the description of the present disclosure, it should be understood that the terms "center", "length", "upper", "lower", "inner", "outer", "radial" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0043] In the description of the present disclosure, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0044] Currently, the main way to achieve fast charging is to increase the charging current. However, large current is accompanied by large heat, and large heat leads to a high contact temperature of the charging harness. Considering the user experience, it is also necessary to control the contact temperature of the charging harness within a lower range, and the charging harness in the related art cannot meet the requirement of controlling the contact temperature of the charging harness within a lower range while achieving a higher charging current.

[0045] To solve the above problems, in a first aspect, some embodiments of the present disclosure provide a liquid-cooled harness 1, as shown in FIG. 1 and FIG. 2, which includes a first cable 11, a second cable 12, and an insulation tube 14. The first cable 11 is provided with a liquid inlet channel 111, and the second cable 12 is provided with a liquid outlet channel 121. The first cable 11 and the second cable 12 are both arranged in the insulation tube 14, and the first cable 11 is arranged closer to the insulation tube 14 than the second cable 12.

[0046] In some embodiments of the present disclosure, because the first cable 11 is provided with the liquid inlet channel 111 and the second cable 12 is provided with the liquid outlet channel 121, the liquid-cooled harness 1 can be filled with liquid cooling medium to achieve the cooling function. In this way, it is convenient to increase the charging current and ensure the charging efficiency.

[0047] It can be understood that the temperature of the liquid outlet channel 121 is higher than that of the liquid inlet channel 111. In some embodiments of the present disclosure, the first cable 11 is arranged closer to the insulation tube 14 than the second cable 12, so that the liquid inlet channel 111 can relieve the heat dissipation pressure at the center of the liquid-cooled harness 1, which is helpful to the outward transmission of the heat at the center of the liquid-cooled harness 1, so that the cross-sectional temperature of the liquid-cooled harness 1 can be uniformly distributed. In this way, it is convenient to reduce the temperature of the insulation tube 14, and further reduce the contact temperature of the liquid-cooled harness 1, and further improve the charging current. That is, the liquid-cooled harness 1 in some embodiments of the present disclosure can have a larger charging current.

[0048] It should be noted that the contact temperature of the liquid-cooled harness 1 can be the surface temperature of the liquid-cooled harness 1, that is, the temperature of the contact surface that the user can touch. The liquid-cooled harness 1 can be cooled during the charging process, so that the contact temperature thereof is low. In this way, when the user touches the liquid-cooled harness 1, he or she will not feel too hot.

[0049] In some embodiments, the first cable 11 and the second cable 12 can both be power lines. For example, the first cable 11 can be a positive line, and the second cable 12 can be a negative line; or the first cable 11 can be a negative line, and the second cable 12 can be a positive line.

[0050] In some embodiments, the first cable 11 can have a circular or square cross-section perpendicular to the length direction thereof, the second cable 12 can have a circular or square cross-section perpendicular to the length direction thereof, and the insulation tube 14 can also have a circular or square cross-section perpendicular to the length direction thereof. Some embodiments of the present disclosure are mainly described by taking the first cable 11, the second cable 12 and the insulation tube 14 as examples, which have circular cross-sections perpendicular to the length directions thereof.

[0051] It should be noted that the present disclosure does not limit the number of the first cables 11 and the number of the second cables 12. The number of the first cables 11 can be greater than, equal to or less than the number of the second cables 12, and the number of the first cables 11 and the number of the second cables 12 can be selected according to actual needs. In addition, one first cable 11 can be in contact with one second cable 12, or one first cable 11 can be in contact with two adjacent second cables 12, and the present disclosure does not limit this. As shown in FIGS. 1 and 2, some embodiments of the present disclosure mainly take four first cables 11 and four second cables 12 as examples for description, and other cases can be referred to the setting.

[0052] In some embodiments of the present disclosure, the first cable 11 is provided with a liquid inlet channel 111, which is a cooling channel for the water pump to pump the cooling medium into the liquid-cooled wire harness 1. The second cable 12 is provided with a liquid outlet channel 121, which is a cooling channel for the liquid-cooled wire harness 1 to pump the cooling medium out of the water pump. By circulating the cooling medium in the liquid inlet channel 111 and the liquid outlet channel 121, the liquid-cooled wire harness 1 can be cooled, so that the heat insulation layer in the liquid-cooled wire harness 1 can be cancelled, thereby reducing the cost. Moreover, since the liquid-cooled wire harness 1 has a cooling function, compared with the liquid-cooled wire harness 1 without the cooling function, the liquid-cooled wire harness 1 in some embodiments of the present disclosure can improve the flow capacity while keeping the flow area unchanged.

[0053] In addition, the first cable 11 is provided with the liquid inlet channel 111, and the second cable 12 is provided with the liquid outlet channel 121, so that the first cable 11 and the second cable 12 do not share the same circuit, and cooling isolation is achieved. Here, the cooling isolation means that the cooling channel of the first cable 11 is isolated from the cooling channel of the second cable 12.

[0054] In some embodiments of the present disclosure, the first cable 11 and the second cable 12 are both arranged in the insulation tube 14, so that the outer surface of the liquid-cooled wire harness 1 is insulated, thereby improving the use reliability of the liquid-cooled wire harness 1. The present disclosure does not limit the material of the insulation tube 14, as long as the insulation performance requirement is met.

[0055] In some embodiments of the present disclosure, the liquid-cooled wire harness 1 can include a plurality of first cables 11 and a plurality of second cables 12, so that the liquid-cooled wire harness 1 has multiple cable strands, which can improve flexibility and also improve the space utilization of the insulation tube 14. In addition, the larger the number of cables, the smaller the outer diameter of the insulation tube 14. For example, the liquid-cooled wire harness A includes eight cables, such as four first cables 11 and four second cables 12, and the liquid-cooled wire harness B includes two cables, such as one first cable 11 and one second cable 12. Under the same charging current, the outer diameter of the insulation tube 14 of the liquid-cooled wire harness A can be reduced by 13.5% compared to the outer diameter of the insulation tube 14 of the liquid-cooled wire harness B.

[0056] In addition, the first cable 11 is arranged closer to the insulation tube 14 than the second cable 12, so that the first cable 11 can be arranged between the second cable 12 and the insulation tube 14, that is, the first cable 11 is arranged in the outer layer and the second cable 12 is arranged in the inner layer. In this way, the cooling medium in the liquid inlet channel 111 can cool the second cable 12 and the insulation tube 14 at the same time, and the first cable 11 can hinder the heat of the second cable 12 with a higher temperature from being transferred to the insulation tube 14, thereby facilitating the reduction of the contact temperature of the insulation tube 14.

[0057] It can be understood that, since the cooling medium enters the liquid outlet channel 121 from the liquid inlet channel 111, that is, the cooling medium absorbs a part of the heat before entering the liquid outlet channel 121, the temperature in the liquid outlet channel 121 is higher than that in the liquid inlet channel 111. Therefore, the first cable 11 is arranged closer to the insulation tube 14 than the second cable 12, so that the first cable 11 can alleviate the heat dissipation pressure of the liquid-cooled wire harness 1, which helps the heat in the center of the liquid-cooled wire harness 1 to be transferred outward to the insulation tube 14, thereby facilitating the reduction of the temperature of the insulation tube 14 and making the temperature distribution of the liquid-cooled wire harness 1 along the radial direction more uniform. In this way, the design of the temperature equalization layer in the liquid-cooled wire harness 1 can be omitted, thereby reducing the outer diameter of the liquid-cooled wire harness 1.

[0058] In some embodiments, the liquid inlet channel 111 and the liquid outlet channel 121 can be provided with a cooling medium, which can be a gas or a liquid, etc.

[0059] In some embodiments, the cooling medium can be an insulating cooling medium, which can avoid short circuiting of the first cable 11 and the second cable 12. The insulating cooling medium can include deionized water, carbon-hydrogen and organic silicon cooling liquid, carbon-fluorine cooling liquid, etc.

[0060] In some embodiments, the liquid inlet channel 111 and the liquid outlet channel 121 are in communication, so that the cooling medium can enter the liquid-cooled wire harness 1 from the liquid inlet channel 111 and then be discharged from the liquid-cooled wire harness 1 through the liquid outlet channel 121, which facilitates the cooling medium to take away heat during the flow process to achieve cooling.

[0061] It should be noted that by arranging the liquid inlet channel 111 in the first cable 11 and the liquid outlet channel 121 in the second cable 12, the temperature can be reduced, and the temperature of the outer surface of the insulating tube 14 can be controlled to be ≤70℃. In this way, the temperature of the insulating tube 14 is relatively low, which facilitates increasing the charging current.

[0062] In some embodiments, the first cable 11 and the second cable 12 each include at least one, and the minimum radial dimension of each first cable 11 from the inner wall of the insulating tube 14 is less than the minimum radial dimension of each second cable 12 from the inner wall of the insulating tube 14. In this way, the first cable 11 is closer to the insulating tube 14 than the second cable 12, thereby facilitating reducing the temperature of the insulating tube 14.

[0063] It should be noted that the minimum radial dimension of the first cable 11 from the inner wall of the insulating tube 14 is the minimum dimension between the outer wall of the first cable 11 and the inner wall of the insulating tube 14 along the radial direction of the insulating tube 14. The minimum radial dimension of the second cable 12 from the inner wall of the insulating tube 14 is the minimum dimension between the outer wall of the second cable 12 and the inner wall of the insulating tube 14 along the radial direction of the insulating tube 14.

[0064] In some embodiments, the number of the first cables 11 can be at least one, and the number of the second cables 12 can be at least one. For example, the number of the first cables 11 is one, and the number of the second cables 12 is one; the number of the first cables 11 is one, and the number of the second cables 12 is at least two; the number of the first cables 11 is at least two, and the number of the second cables 12 is one. In any combination of the number of the first cables 11 and the number of the second cables 12, the minimum radial dimension of each first cable 11 from the inner wall of the insulating tube 14 is less than the minimum radial dimension of each second cable 12 from the inner wall of the insulating tube 14.

[0065] In some embodiments, the inner diameter of the insulating tube 14 is greater than or equal to the sum of the outer diameters of the at least two first cables 11 and the at least one second cable 12. In this way, the at least two first cables 11 and the at least one second cable 12 can be distributed along the radial direction of the insulating tube 14, thereby facilitating arranging more cables in the insulating tube 14.

[0066] In some embodiments, the number of the first cables 11 can be greater than the number of the second cables 12. In this way, the number of the liquid inlet channels 111 can be greater than the number of the liquid outlet channels 121, thereby improving the cooling capacity of the liquid-cooled wire harness 1.

[0067] In some embodiments, as shown in FIG. 1, the liquid-cooled wire harness 1 further includes a liquid inlet pipe 16. The liquid inlet pipe 16 can be arranged close to the second cable 12, or the liquid inlet pipe 16 can be arranged in contact with the second cable 12. In this way, the second cable 12 can be cooled by the liquid inlet pipe 16.

[0068] It can be understood that the liquid inlet pipe 16 is arranged close to the second cable 12, so that the minimum distance between the liquid inlet pipe 16 and the second cable 12 is small. The minimum distance between the liquid inlet pipe 16 and the second cable 12 can be smaller than the minimum distance between the liquid inlet pipe 16 and the first cable 11.

[0069] In some embodiments, the liquid inlet pipe 16 communicates with the liquid outlet channel 121, so that the cooling medium in the liquid inlet pipe 16 can be discharged through the liquid outlet channel 121.

[0070] In some embodiments of the present disclosure, the liquid inlet pipe 16 is added to increase the number of paths for the cooling medium to enter the liquid cooling wire harness 1, so as to improve the cooling capacity of the liquid cooling wire harness 1.

[0071] In some embodiments, the liquid inlet pipe 16 can be in point contact, line contact or surface contact with the second cable 12.

[0072] In some embodiments, when the number of second cables 12 is at least two, the liquid inlet pipe 16 is arranged between the at least two second cables 12, so that the cooling medium in the liquid inlet pipe 16 can also cool the second cables 12, thereby facilitating the reduction of the temperature of the second cables 12.

[0073] In some embodiments, the liquid inlet pipe can be arranged between any two second cables 12, or the liquid inlet pipe 16 can be arranged at the center position of the insulating pipe 14, so that at least two second cables 12 can be arranged around the liquid inlet pipe 16, thereby facilitating the reduction of the temperature of the cooling medium after flowing out of the liquid outlet channel 121, and facilitating the reduction of the temperature at the center of the liquid cooling wire harness 1, so as to improve the temperature distribution of the liquid cooling wire harness 1 in the radial direction.

[0074] In some embodiments, the cooling medium can enter the liquid cooling wire harness 1 from the liquid inlet pipe 16, and then flow out of the liquid cooling wire harness 1 from the liquid outlet channel 121. For example, the number of liquid inlet pipes 16 can be one or at least two, and the number of liquid inlet pipes 16 can be selected according to actual needs, which is not limited in the present disclosure.

[0075] In some embodiments, one liquid inlet pipe 16 can communicate with the liquid outlet channel 121 in one second cable 12, or a plurality of liquid inlet pipes 16 can communicate with the liquid outlet channel 121 in one second cable 12, or one liquid inlet pipe 16 can communicate with the liquid outlet channel 121 in a plurality of second cables 12, which is not limited in the present disclosure.

[0076] It should be noted that the liquid inlet pipe 16 can be a circular pipe, a square pipe or a special-shaped pipe, etc. For example, FIG. 1 shows a case where the liquid inlet pipe 16 is a star-shaped pipe, which is filled between the four second cables 12, and other cases can be referred to for arrangement.

[0077] In some embodiments, the liquid inlet pipe 16 comprises a heat-conducting part, which wraps at least part of the second cable 12. The heat-conducting part is in contact with the second cable 12, which can increase the contact area between the liquid inlet pipe 16 and the second cable 12. On the one hand, the flowing cooling medium in the liquid inlet pipe 16 can cool the second cable 12, and on the other hand, the liquid inlet pipe 16 and the second cable 12 can be more compactly attached, so as to improve the filling rate in the insulation pipe 14, and the cooling medium in the second cable 12 can also avoid the situation of flow interruption when the liquid cooling harness 1 is bent.

[0078] In some embodiments, the liquid cooling harness 1 further comprises a support 15, which is arranged in the insulation pipe 14 to fix the positions of the first cable 11 and the second cable 12 in the insulation pipe 14. In this way, the cooling medium in the first cable 11 and the second cable 12 can avoid the situation of flow interruption when the liquid cooling harness 1 is bent.

[0079] In some embodiments, the support 15 can be filled in the gap between two adjacent first cables 11, the gap between the first cable 11 and the second cable 12, and the gap between two adjacent second cables 12. In this way, the support strength of the first cable 11 and the second cable 12 can be effectively improved.

[0080] It can be understood that the support 15 can support the first cable 11 and the second cable 12 to reduce the deformation degree of the first cable 11 and the second cable 12, ensure the smoothness of the liquid inlet passage 111 and the liquid outlet passage 121, and thus improve the cooling effect of the liquid cooling harness 1. The material of the support 15 is not limited in the present disclosure.

[0081] In some embodiments, the liquid cooling harness 1 further comprises a third cable 13, which is arranged apart from the first cable 11 and the second cable 12.

[0082] In some embodiments of the present disclosure, the first cable 11 and the second cable 12 are positive and negative cables, which generate a relatively high amount of heat during charging. The third cable 13 is arranged apart from the first cable 11 and the second cable 12, so as to avoid the temperature rise of the third cable 13.

[0083] In some embodiments, the third cable 13 can include but is not limited to a first signal line 131, a second signal line 132, a ground line 133, and an auxiliary power line 134, etc.

[0084] The liquid cooling harness 1 in some embodiments of the present disclosure has at least the following advantages:

[0085] In some embodiments of the present disclosure, the liquid cooling harness 1 can be filled with liquid cooling medium to achieve the cooling function due to the liquid inlet channel 111 arranged in the first cable 11 and the liquid outlet channel 121 arranged in the second cable 12. In this way, the charging current can be increased, and the charging efficiency can be ensured. It can be understood that the temperature of the liquid outlet channel 121 is higher than that of the liquid inlet channel 111. Since the first cable 11 is arranged closer to the insulation pipe 14 than the second cable 12, the liquid inlet channel 111 can relieve the heat dissipation pressure at the center of the liquid cooling harness 1, which is conducive to the outward transmission of the heat at the center of the liquid cooling harness 1, so as to achieve uniform distribution of the cross-sectional temperature of the liquid cooling harness 1. In this way, the temperature of the insulation pipe 14 can be reduced, and the contact temperature of the liquid cooling harness 1 can be further reduced. That is, the liquid cooling harness 1 in some embodiments of the present disclosure can have a larger charging current.

[0086] In the second aspect, some embodiments of the present disclosure provide a connector assembly 2, as shown in FIG. 3, which includes the above-mentioned liquid cooling harness 1. Since the liquid cooling harness 1 has the function of cooling and reducing temperature, the connector assembly 2 can adapt to the demand for a larger charging current.

[0087] In some embodiments, as shown in FIGS. 3 and 6, the connector assembly 2 further includes two liquid cooling terminals 3, which can be electrically connected to at least one of the first cable 11 or the second cable 12. In this way, the charging of the to-be-charged object can be facilitated, and the cooling and temperature reduction effect can be achieved during the charging process.

[0088] In some embodiments, the two liquid cooling terminals 3 can be a positive terminal and a negative terminal, respectively. The positive terminal can be electrically connected to all positive cables, and the negative terminal can be electrically connected to all negative cables. The positive terminal and the positive cable together constitute the positive electrode of the connector assembly 2, and the negative terminal and the negative cable together constitute the negative electrode of the connector assembly 2.

[0089] In some embodiments, all the first cables 11 are positive cables, and all the second cables 12 are negative cables. In this way, the positive terminal can be electrically connected to all the first cables 11, and the negative terminal can be electrically connected to all the second cables 12.

[0090] In other embodiments, as shown in FIGS. 4 to 6, half of the first cables 11 and the second cables 12 can be positive cables, and the other half can be negative cables. In this way, the positive terminal can be electrically connected to half of the first cables 11 and the second cables 12, respectively, and the negative terminal can be electrically connected to the remaining half of the first cables 11 and the second cables 12. This is conducive to making the heat dissipation performance and temperature of the two liquid cooling terminals 3 consistent.

[0091] In some embodiments, each liquid cooling terminal 3 is electrically connected with the first cable 11 and the second cable 12 respectively, so that the two liquid cooling terminals 3 can not share the cooling loop, realizing cooling isolation. Here, the cooling isolation refers to the isolation of the cooling loop between the two liquid cooling terminals 3. In this way, when the cooling medium of one liquid cooling terminal 3 leaks or fails due to pollution, only the liquid cooling terminal 3 is affected, that is, the positive and negative terminals do not affect each other, thereby reducing the risk of short circuit. In addition, the flow rate of the cooling medium of the positive and negative terminals can be independently controlled, and when the cooling medium leaks, the input of the cooling medium can be directly cut off to reduce the loss.

[0092] In some embodiments, each liquid cooling terminal 3 is electrically connected with at least two first cables 11, so that at least one liquid inlet channel 111 in the at least one first cable 11 remains in operation, avoiding the occurrence of cooling medium flow interruption, and improving reliability. Similarly, each liquid cooling terminal 3 is electrically connected with at least two second cables 12, so that at least one liquid outlet channel 121 in the at least one second cable 12 remains in operation, avoiding the occurrence of cooling medium flow interruption, and improving reliability.

[0093] In some embodiments, as shown in FIGS. 4 and 5, the liquid cooling terminal 3 includes a plug-in piece 31 and a shell assembly 32, the shell assembly 32 has a cooling cavity 321 adapted to contain the cooling medium, and the cooling cavity 321 is in communication with the liquid inlet channel 111 and the liquid outlet channel 121 respectively. In this way, the cooling medium can enter the cooling cavity 321 from the liquid inlet channel 111, and then flow from the cooling cavity 321 to the liquid outlet channel 121. In this way, the cooling medium can simultaneously cool and lower the temperature of the liquid cooling wire harness 1 and the liquid cooling terminal 3, facilitating the reduction of the temperature of the connector assembly 2 and improving the service life of the connector assembly 2.

[0094] In some embodiments, the plug-in piece 31 can be at least partially disposed in the cooling cavity 321, at least one of the first cable 11 or the second cable 12 can be at least partially disposed in the cooling cavity 321, and the plug-in piece 31 is electrically connected with at least one of the first cable 11 or the second cable 12. In this way, the connection between the liquid cooling terminal 3 and the liquid cooling wire harness 1 can be completed, thereby realizing charging for the to-be-charged object.

[0095] In some embodiments, the plug-in piece 31 and the first cable 11 can be fixed by welding connection or conductive glue bonding, and the plug-in piece 31 and the second cable 12 can be fixed by welding connection or conductive glue bonding.

[0096] For example, the plug-in piece 31 of one liquid cooling terminal 3 can be electrically connected with the first cable 11, and the plug-in piece 31 of another liquid cooling terminal 3 can be electrically connected with the second cable 12, or the plug-in piece 31 of each liquid cooling terminal 3 can be electrically connected with the first cable 11 and the second cable 12 respectively.

[0097] In some embodiments, as shown in FIGS. 5 and 6, the plug-in part 31 comprises a connecting part 312 and a connecting part 311 connected with each other, the connecting part 311 is arranged in the cooling cavity 321, and the plug-in part 312 is arranged outside the cooling cavity 321, so that at least one of the first cable 11 or the second cable 12 can be connected through the connecting part 311, and the plug-in part 312 can be electrically connected with the to-be-charged part.

[0098] In some embodiments, the connecting part 311 is provided with at least one cooling channel 3112, both ends of the cooling channel 3112 are in communication with the cooling cavity 321.

[0099] In some embodiments of the present disclosure, by arranging the cooling channel 3112 on the connecting part 311, the contact area of the liquid cooling terminal 3 with the cooling medium can be increased, so as to improve the cooling effect on the liquid cooling terminal 3.

[0100] For example, the number of cooling channels 3112 can include one or at least two, and the number of cooling channels 3112 can be selected according to actual needs, which is not limited in the present disclosure.

[0101] In some embodiments, the cooling channel 3112 can be a straight strip shape, or can also be a curved shape, which is not limited in the present disclosure.

[0102] In some embodiments, the connecting part 311 can divide the cooling cavity 321 into two sub-cooling cavities 321, or the connecting part 311 can be arranged in a spaced manner with the inner wall of the cooling cavity 321, which is not limited in the present disclosure.

[0103] As shown in FIG. 6, the connecting part 311 can divide the cooling cavity 321 into a first sub-cooling cavity 3211 and a second sub-cooling cavity 3212, the inlet liquid passage 111 is in communication with the first sub-cooling cavity 3211, and the outlet liquid passage 121 is in communication with the second sub-cooling cavity 3212. The first end of the cooling channel 3112 is in communication with the first sub-cooling cavity 3211, and the second end of the cooling channel 3112 is in communication with the second sub-cooling cavity 3212.

[0104] In some embodiments of the present disclosure, the connecting part 311 can divide the cooling cavity 321 into a first sub-cooling cavity 3211 and a second sub-cooling cavity 3212, so that the cooling medium can pass through the first sub-cooling cavity 3211, the cooling channel 3112 and the second sub-cooling cavity 3212 in sequence, thereby improving the cooling effect on the liquid cooling terminal 3.

[0105] In some embodiments, the plug-in part 31 can be a metal part, and the connecting part 311 can be welded and fixed with at least one of the first cable 11 or the second cable 12.

[0106] Taking the first cable 11 and the second cable 12 being welded at the connecting part 311 as an example, the first side wall of the connecting part 311 can be welded with the first cable 11, the second side wall of the connecting part 311 can be welded with the second cable 12, and the first cable 11 and the second cable 12 can be welded on opposite sides of the connecting part 311 by means of ultrasonic double-sided welding, so as to simplify the processing steps of the connector assembly 2. Moreover, the connecting part 311 is connected with the first cable 11 and the second cable 12 by means of ultrasonic double-sided welding, compared with the mode that the connecting part 311 is crimped with the first cable 11 and the second cable 12, the resistance of the liquid cooling terminal 3 can be reduced by 2 / 3, and the heat generation is smaller.

[0107] In some embodiments, as shown in FIGS. 6 and 7, the connector assembly 2 satisfies at least one of the following: the connecting part 311 is provided with a plurality of spaced disturbance members 3111 on one side facing the first sub-cooling cavity 3211, or the connecting part 311 is provided with a plurality of spaced disturbance members 3111 on one side facing the second sub-cooling cavity 3212. In this way, the contact area of the liquid cooling terminal 3 with the cooling medium can be increased, and the cooling effect on the liquid cooling terminal 3 can be improved.

[0108] In some embodiments, the disturbance member 3111 can include a first side wall and a second side wall along a first direction, the first side wall and the inner wall of the cooling cavity 321 enclose the first sub-cooling cavity 3211, the second side wall and the inner wall of the cooling cavity 321 enclose the second sub-cooling cavity 3212, and the first direction is the direction from the first side wall to the second side wall. The shape of the cross section of the disturbance member 3111 perpendicular to the first direction includes at least one of a polygon, a circle, and an ellipse, or the disturbance member 3111 can be a heat dissipation fin, so that the structure of the flow member is more diverse.

[0109] It should be noted that, in the case that the disturbance member 3111 is a heat dissipation fin, compared with other common shapes of the disturbance member 3111, such as a circular or square cross section perpendicular to the first direction, the flow resistance is smaller, the contact area of the liquid cooling terminal 3 with the cooling medium can be increased by 118%, the heat dissipation capacity can be improved by 120%, and the equivalent charging current (ECC) can be improved by 1.5 times.

[0110] In some embodiments, as shown in FIG. 5, the shell assembly 32 can further include a shell 322 and a tail plate 323, the tail plate 323 and the shell 322 are connected and can enclose the cooling cavity 321 to accommodate the cooling medium. The plug-in part 31 can further include a transition part 313, the transition part 313 can be connected between the connecting part 311 and the plug-in part 312, the transition part 313 can be arranged on the side of the shell 322 opposite to the tail plate 323, and the first cable 11 and the second cable 12 can be arranged in the tail plate 323.

[0111] For example, during the assembly of the connector assembly 2, the splicing piece 31 can be first arranged on the side of the shell 322 opposite to the tail plate 323, then the connecting portion 311 is pulled out of the shell 322, and the first cable 11 and the second cable 12 are welded with the connecting portion 311. After that, the connecting portion 311, the first cable 11 and the second cable 12 are put into the shell 322, and then the tail plate 323 and the shell 322 are fixed. In this way, the whole assembly process is simple to operate, and the first cable 11 and the second cable 12 can be prevented from being pulled, so as to ensure the quality of the connector assembly 2.

[0112] In some embodiments, the splicing piece 31, the shell 322 and the tail plate 323 can be connected by bolts, so as to improve the convenience of assembly. In other cases, the splicing piece 31 and the shell 322, and the shell 322 and the tail plate 323 can be separately installed.

[0113] In some embodiments, the connector assembly 2 can further include a first sealing member 51 and a second sealing member 52, and the transition portion 313 can be sealingly connected with the shell 322 through the first sealing member 51, and the tail plate 323 can be sealingly connected with the shell 322 through the second sealing member 52. In this way, the sealing performance of the cooling cavity 321 can be improved, and the short circuit phenomenon caused by leakage of the cooling medium can be avoided.

[0114] In some embodiments, the connector assembly 2 can further include a locking member 4, and the locking member 4 can lock at least one of the first cable 11 or the second cable 12 with the tail plate 323.

[0115] In some embodiments, the number of the locking members 4 can be equal to the sum of the number of the first cables 11 and the number of the second cables 12, and one locking member 4 can be used to fix one first cable 11 or second cable 12. The locking member 4 can be a snap ring or a lock buckle, and the locking member 4 is suitable for fixing the first cable 11 or the second cable 12 with the tail plate 323. The locking member 4 can be fixed with the tail plate 323 by bolts or buckles.

[0116] In some embodiments, the connector assembly 2 can further include at least one of a temperature sensor or a liquid leakage sensor, and the splicing portion 312 is provided with a clamping groove 3121 at one end close to the connecting portion 311, and at least one of the temperature sensor or the liquid leakage sensor is installed in the clamping groove 3121.

[0117] In some embodiments of the present disclosure, the temperature of the liquid cooling terminal 3 can be detected by the temperature sensor, so that the temperature of the positive and negative terminals can be independently monitored, and the temperature of different liquid cooling terminals 3 can be real-time controlled, so as to ensure that the temperature of the positive and negative terminals is consistent. In some embodiments of the present disclosure, the leakage of the cooling medium in the cooling cavity 321 can be detected by the liquid leakage sensor, so that the use reliability of the connector assembly 2 can be improved.

[0118] In some embodiments, the number of card slots 3121 can be one or two, and one card slot 3121 can be used to fix at least one of a temperature sensor or a liquid leakage sensor.

[0119] The connector assembly 2 in some embodiments of the present disclosure has at least the following advantages:

[0120] In some embodiments of the present disclosure, since the first cable 11 is provided with a liquid inlet channel 111 and the second cable 12 is provided with a liquid outlet channel 121, the liquid cooling wire harness 1 can be filled with liquid cooling medium to achieve cooling function. In this way, it is convenient to increase the charging current and ensure the charging efficiency. It can be understood that the temperature of the liquid outlet channel 121 is higher than that of the liquid inlet channel 111, and since the first cable 11 is arranged closer to the insulating tube 14 than the second cable 12, the liquid inlet channel 111 can relieve the heat dissipation pressure at the center of the liquid cooling wire harness 1, which helps the outward transmission of the heat at the center of the liquid cooling wire harness 1, thereby achieving uniform distribution of the cross-sectional temperature of the liquid cooling wire harness 1. In this way, it is convenient to reduce the temperature of the insulating tube 14, and further reduce the contact temperature of the liquid cooling wire harness 1. That is, the liquid cooling wire harness 1 in some embodiments of the present disclosure can have a larger charging current.

[0121] In a third aspect, some embodiments of the present disclosure further provide a charging gun 10, comprising the above-mentioned liquid cooling wire harness 1 or the above-mentioned connector assembly 2.

[0122] As shown in FIG. 8, a charging gun 10 is shown, and the charging gun 10 in some embodiments of the present disclosure can comprise the above-mentioned liquid cooling wire harness 1 or the above-mentioned connector assembly 2, which can achieve the same beneficial effects as the above-mentioned liquid cooling wire harness or the above-mentioned connector assembly 2, and the present disclosure will not repeat them here.

[0123] In a fourth aspect, some embodiments of the present disclosure further provide a charging device 100, comprising the above-mentioned liquid cooling wire harness 1 or the above-mentioned connector assembly 2.

[0124] For example, the charging device 100 in some embodiments of the present disclosure can be a vehicle-mounted charging device, or a non-vehicle-mounted charging device such as a charging pile.

[0125] As shown in FIG. 9 and FIG. 10, the charging device 100 in some embodiments of the present disclosure can comprise the above-mentioned liquid cooling wire harness 1 or the above-mentioned connector assembly 2, which can achieve the same beneficial effects as the above-mentioned liquid cooling wire harness or the above-mentioned connector assembly 2, and the present disclosure will not repeat them here.

[0126] In a fifth aspect, some embodiments of the present disclosure further provide a vehicle 1000, comprising the above-mentioned liquid cooling wire harness 1 or the above-mentioned connector assembly 2.

[0127] As shown in FIGS. 11 and 12, the vehicle 1000 in some embodiments of the present disclosure can include the liquid-cooled wire harness 1 or the connector assembly 2 described above, and can achieve the same beneficial effects as the liquid-cooled wire harness 1 or the connector assembly 2 described above, and the present disclosure will not repeat the same here.

[0128] Although the preferred embodiments of the embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present disclosure.

[0129] Finally, it should also be noted that, in this document, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles, or terminal devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent in such processes, methods, articles, or terminal devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or terminal device including the element.

[0130] The above describes in detail a liquid-cooled wire harness, a connector assembly, a charging gun, a charging device, and a vehicle provided by the present disclosure, and the principles and implementation manners of the present disclosure are described by applying specific examples in this document. The above description of the embodiments is only used to help understand the method of the present disclosure and its core idea; at the same time, for those skilled in the art, according to the idea of the present disclosure, there will be changes in the specific implementation manner and application range; in view of the above, the content of the present description should not be understood as a limitation of the present disclosure.

Claims

1. A liquid-cooled wiring harness, comprising: a first cable (11) provided with a liquid inlet channel (111) therein; a second cable (12) provided with a liquid outlet channel (121) therein; and an insulation tube (14) in which the first cable (11) and the second cable (12) are respectively arranged; the first cable (11) is arranged closer to the insulation tube (14) than the second cable (12).

2. The liquid-cooled wiring harness of claim 1, wherein, the liquid inlet channel (111) and the liquid outlet channel (121) are in communication.

3. The liquid-cooled wiring harness of claim 1 or 2, wherein, an outer surface temperature of the insulation tube (14) is ≤ 70℃.

4. The liquid-cooled wiring harness of any of claims 1-3, wherein, a minimum radial dimension of the first cable (11) from an inner wall of the insulation tube (14) is smaller than a minimum radial dimension of the second cable (12) from the inner wall of the insulation tube (14).

5. The liquid-cooled wiring harness of any of claims 1-4, wherein, an inner diameter of the insulation tube (14) is greater than or equal to a sum of outer diameters of at least two first cables (11) and at least one second cable (12).

6. The liquid-cooled wiring harness according to any one of claims 1-5, further comprising a liquid inlet tube (16) arranged close to or in contact with the second cable (12).

7. The liquid-cooled wiring harness of claim 6, wherein, the liquid inlet tube (16) is in communication with the liquid outlet channel (121).

8. The liquid-cooled wiring harness of claim 6 or 7, wherein, the liquid inlet tube (16) comprises a heat-conducting portion that at least partially wraps the second cable (12) and is in contact with the second cable (12).

9. The liquid-cooled wiring harness of any of claims 1-8, wherein, the liquid-cooled wiring harness (1) further comprises a support (15) arranged in the insulation tube (14) to fix positions of the first cable (11) and the second cable (12) in the insulation tube (14).

10. The liquid-cooled wiring harness of any of claims 1-9, wherein, the liquid-cooled wiring harness (1) further comprises a third cable (13) arranged apart from the first cable (11) and the second cable (12).

11. The liquid-cooled wiring harness of any of claims 1-10, wherein, the liquid inlet channel (111) and the liquid outlet channel (121) are provided with a cooling medium, which is an insulation cooling medium.

12. A connector assembly, comprising the liquid-cooled wiring harness (1) according to any one of claims 1-11.

13. The connector assembly of claim 12, wherein, the connector assembly further comprises a liquid-cooled terminal (3) electrically connected to at least one of the first cable (11) or the second cable (12).

14. The connector assembly of claim 13, wherein, the liquid-cooled terminal (3) comprises a plug (31) and a housing assembly (32) having a cooling cavity (321) adapted to contain a cooling medium, the cooling cavity (321) being in communication with the liquid inlet channel (111) and the liquid outlet channel (121); at least one of the plug (31) and the first cable (11) or the second cable (12) is at least partially arranged in the cooling cavity (321), and the plug (31) is electrically connected to at least one of the first cable (11) or the second cable (12).

15. The connector assembly of claim 14, wherein, The plug-in part (31) comprises a plug-in part (312) and a connecting part (311) connected with each other, the connecting part (311) is arranged in the cooling cavity (321), and the plug-in part (312) is arranged outside the cooling cavity (321); The connecting part (311) is provided with at least one cooling channel (3112), and both ends of the cooling channel (3112) communicate with the cooling cavity (321).

16. The connector assembly of claim 15, wherein, The connecting part (311) divides the cooling cavity (321) into a first sub-cooling cavity (3211) and a second sub-cooling cavity (3212), the liquid inlet channel communicates with the first sub-cooling cavity (3211), and the liquid outlet channel communicates with the second sub-cooling cavity (3212); The first end of the cooling channel (3112) communicates with the first sub-cooling cavity (3211), and the second end of the cooling channel (3112) communicates with the second sub-cooling cavity (3212).

17. The connector assembly according to claim 16, further satisfying at least one of the following: The connecting part (311) is provided with a plurality of spoiler parts (3111) arranged at intervals on one side of the first sub-cooling cavity (3211), or The connecting part (311) is provided with a plurality of spoiler parts (3111) arranged at intervals on one side of the second sub-cooling cavity (3212).

18. A charging gun comprising the liquid-cooled wire harness according to any one of claims 1-11 or the connector assembly according to any one of claims 12-17.

19. A charging device comprising the liquid-cooled wire harness according to any one of claims 1-11 or the connector assembly according to any one of claims 12-17.

20. A vehicle comprising the liquid-cooled wire harness according to any one of claims 1-11 or the connector assembly according to any one of claims 12-17.

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