Liquid cooling wire harness, connector assembly, charging gun, charging equipment and vehicle

Abstract

The embodiment of the invention provides a liquid cooling wire harness, a connector assembly, a charging gun, charging equipment and a vehicle, and the liquid cooling wire harness comprises a first cable which is internally provided with a liquid inlet channel; a liquid outlet channel is formed in the second cable; an insulating tube, wherein the first cable and the second cable are both arranged in the insulating tube; the first cable is disposed closer to the insulating tube than the second cable. The liquid cooling wire harness can have large charging current, and the use experience of a user is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging guns, in particular to a liquid-cooled wire harness, a connector assembly, a charging gun, a charging device and a vehicle. BACKGROUND

[0002] 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. At present, the main way to realize rapid charging is to increase the charging current. However, large current is accompanied by large heat, and large heat leads to high contact temperature of the charging wire harness. Considering the user experience, it is also necessary to control the contact temperature of the charging wire harness to be low. However, the existing charging wire harness cannot meet the higher charging current while improving the user experience. SUMMARY

[0003] In view of the above problems, the present application embodiments are proposed in order to provide a liquid-cooled wire harness, a connector assembly, a charging gun, a charging device and a vehicle which overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above problems, in a first aspect, the present application embodiments disclose a liquid-cooled wire harness, comprising:

[0005] a first cable, a liquid inlet channel is arranged in the first cable;

[0006] a second cable, a liquid outlet channel is arranged in the second cable;

[0007] an insulating tube, the first cable and the second cable are arranged in the insulating tube;

[0008] The first cable is arranged closer to the insulating tube than the second cable.

[0009] Optionally, the liquid inlet channel and the liquid outlet channel are in communication.

[0010] Optionally, the temperature of the outer surface of the insulating tube is ≤70℃.

[0011] Optionally, the minimum radial dimension of the first cable from the inner wall of the insulating tube is smaller than the minimum radial dimension of the second cable from the inner wall of the insulating tube.

[0012] Optionally, the inner diameter of the insulating 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.

[0013] Optionally, the liquid-cooled wire harness further comprises a liquid inlet tube, which is arranged close to or in contact with the second cable.

[0014] Optionally, the liquid inlet pipe is in communication with the liquid outlet channel.

[0015] Optionally, the liquid inlet pipe comprises a heat-conducting part, which wraps at least part of the second cable and is in contact with the second cable.

[0016] Optionally, the liquid-cooled wire harness further comprises a support arranged in the insulating pipe to fix the position of each cable in the liquid-cooled wire harness.

[0017] Optionally, the liquid-cooled wire harness further comprises a third cable, which is arranged apart from the first cable and the second cable.

[0018] Optionally, the liquid inlet channel and the liquid outlet channel are provided with a cooling medium, which is an insulating cooling medium.

[0019] In a second aspect, the embodiments of the present application disclose a connector assembly, which comprises the above liquid-cooled wire harness.

[0020] Optionally, the connector assembly further comprises a liquid-cooled terminal, which is electrically connected with the first cable and / or the second cable.

[0021] Optionally, the liquid-cooled terminal comprises a plug-in part and a housing assembly, the housing assembly has a cooling cavity adapted to contain a cooling medium, the cooling cavity is in communication with the liquid inlet channel and the liquid outlet channel respectively.

[0022] The plug-in part, the first cable and / or the second cable are arranged at least partially in the cooling cavity, and the plug-in part is electrically connected with the first cable and / or the second cable respectively.

[0023] Optionally, the plug-in part comprises a plug-in part and a connecting part connected with each other, the connecting part is arranged in the cooling cavity, and the plug-in part is arranged outside the cooling cavity.

[0024] The connecting part is provided with at least one cooling channel, and both ends of the cooling channel are in communication with the cooling cavity.

[0025] Optionally, the connecting part divides the cooling cavity into a first sub-cooling cavity and a second sub-cooling cavity, the liquid inlet channel is in communication with the first sub-cooling cavity, and the liquid outlet channel is in communication with the second sub-cooling cavity.

[0026] One end of the cooling channel is in communication with the first sub-cooling cavity, and the other end is in communication with the second sub-cooling cavity.

[0027] Optionally, the connecting portion is provided with a plurality of spaced-apart baffles on the side facing the first sub-cooling cavity, and / or the connecting portion is provided with a plurality of spaced-apart baffles on the side facing the second sub-cooling cavity.

[0028] Thirdly, embodiments of the present invention also disclose a charging gun, including the above-mentioned liquid-cooled wiring harness or the above-mentioned connector assembly.

[0029] Fourthly, embodiments of the present invention also disclose a charging device, including the above-described liquid-cooled wiring harness or the above-described connector assembly.

[0030] Fifthly, embodiments of the present invention also disclose a vehicle including the above-described liquid-cooled wiring harness or the above-described connector assembly.

[0031] The embodiments of the present invention have the following advantages:

[0032] In this embodiment of the invention, since the first cable has a liquid inlet channel and the second cable can have a liquid outlet channel, the liquid-cooled wiring harness can be circulated with a liquid cooling medium to achieve a cooling function, which facilitates increased charging current and ensures charging efficiency. The temperature of the outlet channel is higher than that of the inlet channel. Because the first cable is positioned closer to the insulating tube than the second cable, the inlet channel can mitigate the outward transfer of central heat, resulting in a more uniform temperature distribution across the cross-section of the liquid-cooled wiring harness. This facilitates lowering the temperature of the insulating tube, thereby reducing the contact temperature of the liquid-cooled wiring harness and improving the user experience. In other words, the liquid-cooled wiring harness of this invention can simultaneously deliver a larger charging current and meet user experience requirements. Attached Figure Description

[0033] Figure 1 This is a cross-sectional view of a liquid-cooled wiring harness according to the present invention;

[0034] Figure 2 This is a structural diagram of a liquid-cooled wire harness according to the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of a connector assembly according to the present invention;

[0036] Figure 4 This is an assembly diagram of a connector, a first cable, and a second cable according to the present invention;

[0037] Figure 5 This is an exploded view of a connector of the present invention mates with a first cable and a second cable.

[0038] Figure 6 This is a cross-sectional view of a connector of the present invention in conjunction with a first cable and a second cable;

[0039] Figure 7is a structural schematic view of a plug-in piece of the present application;

[0040] Figure 8 is a structural schematic view of a charging gun of the present application.

[0041] Legend:

[0042] 1, liquid cooling wire harness; 11, first cable; 111, liquid inlet channel; 12, second cable; 121, liquid outlet channel; 13, third cable; 131, first signal line; 132, second signal line; 133, ground wire; 134, auxiliary power supply line; 14, insulating tube; 15, support piece; 16, liquid inlet tube; 3, liquid cooling terminal; 31, plug-in piece; 311, connecting part; 3111, spoiler; 3112, cooling channel; 312, plug-in part; 3121, clamping groove; 313, transition part; 32, shell assembly; 321, cooling cavity; 3211, first sub-cooling cavity; 3212, second sub-cooling cavity; 322, outer shell; 323, tail plate; 4, locking piece; 51, first sealing piece; 52, second sealing piece. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0044] The terms "first", "second" in the specification and claims of the present application can explicitly or implicitly include one or more features. In the description of the present application, 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.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 limiting the present application.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] Firstly, one of the core concepts of the embodiments of the present invention lies in disclosing a liquid-cooled wiring harness 1, such as... Figure 1 and Figure 2 As shown, the liquid cooling harness 1 includes: a first cable 11, with a liquid inlet channel 111 inside the first cable 11; a second cable 12, with a liquid outlet channel 121 inside the second cable 12; and an insulating tube 14, in which both the first cable 11 and the second cable 12 are disposed; the first cable 11 is disposed closer to the insulating tube 14 than the second cable 12.

[0048] In this embodiment of the invention, 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-cooled wiring harness 1 can be supplied with a liquid cooling medium to achieve a cooling function, which facilitates increasing the charging current and ensuring charging efficiency. The temperature of the liquid outlet channel 121 is higher than that of the liquid inlet channel 111. Because the first cable 11 is located closer to the insulating tube 14 than the second cable 12, the liquid inlet channel 111 can alleviate the outward transfer of central heat, resulting in a more uniform temperature distribution across the cross-section of the liquid-cooled wiring harness 1. This facilitates lowering the temperature of the insulating tube 14, thereby reducing the contact temperature of the liquid-cooled wiring harness, improving the user experience, and further facilitating a higher charging current. In other words, the liquid-cooled wiring harness of this invention can simultaneously provide a larger charging current and meet user experience requirements.

[0049] Specifically, the contact temperature of the liquid-cooled wiring harness is the surface temperature of the liquid-cooled wiring harness, that is, the temperature of the contact surface that the user can touch. The liquid-cooled wiring harness can be cooled during charging, so that its contact temperature is low and the user will not feel overheated when touching the liquid-cooled wiring harness.

[0050] Specifically, both the first cable 11 and the second cable 12 can be power cables, with the first cable 11 being a positive cable and the second cable 12 being a negative cable; or, the first cable 11 being a negative cable and the second cable 12 being a positive cable.

[0051] Specifically, the shape of the cross-section of the first cable 11 perpendicular to its length direction can be circular or square, the shape of the cross-section of the second cable 12 perpendicular to its length direction can be circular or square, and the shape of the cross-section of the insulating tube 14 perpendicular to its length direction can also be circular or square. This embodiment of the invention is only described with the example that the cross-sections of the first cable 11, the second cable 12, and the insulating tube 14 perpendicular to their length direction are circular.

[0052] Specifically, in this embodiment of the invention, the number of first cables 11 and the number of second cables 12 are not specifically limited. The number of first cables 11 can be greater than, equal to, or less than the number of second cables 12, and can be selected according to actual needs. This embodiment of the invention does not impose a specific limitation on this. Specifically, one first cable 11 can contact one second cable 12, or one first cable 11 can contact two adjacent second cables 12. Specifically, as... Figure 1 and Figure 2 In this embodiment of the invention, only four first cables 11 and four second cables 12 are used as examples for illustration. Other cases can be set up with reference to this example.

[0053] In this embodiment of the invention, a liquid inlet channel 111 is provided in the first cable 11, which is a cooling channel through which a water pump pumps cooling medium into the liquid-cooled wiring harness 1; a liquid outlet channel 121 is provided in the second cable 12, which is a cooling channel through which the liquid-cooled wiring harness 1 pumps cooling medium out of the water pump. By circulating cooling medium in the liquid inlet channel 111 and the liquid outlet channel 121, the liquid-cooled wiring harness 1 can be cooled, eliminating the need for an internal heat insulation layer and reducing costs. Moreover, since the liquid-cooled wiring harness 1 has a cooling function, compared to a liquid-cooled wiring harness 1 without a cooling function, the liquid-cooled wiring harness 1 in this embodiment of the invention can improve the flow capacity while maintaining the same flow area.

[0054] Furthermore, an inlet channel 111 is provided in the first cable 11, and an outlet channel 121 is provided in the second cable 12, so that the first cable 11 and the second cable 12 do not share a circuit and are cooled and isolated.

[0055] Specifically, both the first cable 11 and the second cable 12 are housed within the insulating tube 14, which insulates the outer surface of the liquid-cooled wiring harness 1 and improves its safety in use. This embodiment of the invention does not specifically limit the material of the insulating tube 14, as long as it meets the insulation performance requirements.

[0056] Specifically, the liquid-cooled wiring harness 1 may include multiple first cables 11 and second cables 12, giving it multi-strand cable configuration and improving flexibility. It also increases the space utilization of the insulating tube 14. Furthermore, the larger number of cables allows for a reduction in the outer diameter of the insulating tube 14. For example, if liquid-cooled wiring harness A includes eight cables (e.g., four first cables 11 and four second cables 12), and liquid-cooled wiring harness B includes two cables (e.g., one first cable 11 and one second cable 12), under the same charging current, the outer diameter of the insulating tube 14 in liquid-cooled wiring harness A can be reduced by 13.5% compared to that in liquid-cooled wiring harness B.

[0057] Furthermore, the first cable 11 is positioned closer to the insulating tube 14 than the second cable 12, allowing the first cable 11 to be positioned between the second cable 12 and the insulating tube 14. That is, the first cable 11 is arranged on the outer layer, and the second cable 12 is arranged on the inner layer. The cooling medium in the liquid inlet channel 111 can simultaneously cool and reduce the temperature of the second cable 12 and the insulating tube 14. This allows the first cable 11 to simultaneously prevent the heat from the higher-temperature second cable 12 from being transferred to the insulating tube 14, thereby reducing the contact temperature of the insulating tube 14 and improving the user experience.

[0058] Specifically, since the cooling medium enters the outlet channel 121 from the inlet channel 111, meaning that the cooling medium absorbs some heat before entering the outlet channel 121, the temperature inside the outlet channel 121 is higher than that inside the inlet channel 111. The first cable 11 is positioned closer to the insulating tube 14 than the second cable 12. The first cable 11 can alleviate the transfer of heat from the center to the insulating tube 14, which helps to reduce the temperature of the insulating tube 14. Furthermore, the temperature distribution along the radial direction of the liquid cooling harness 1 is more uniform, which eliminates the need for a uniform temperature layer in the liquid cooling harness 1, further reducing the outer diameter of the liquid cooling harness 1 and improving the user experience.

[0059] Optionally, the liquid inlet channel 111 and the liquid outlet channel 121 may be provided with a cooling medium, which may be a gas or a liquid.

[0060] Furthermore, the cooling medium can be an insulating cooling medium to prevent short circuits between the first cable 11 and the second cable 12. The insulating cooling medium may include deionized water, hydrocarbon and organosilicon coolants, fluorocarbon coolants, etc.

[0061] Optionally, the inlet channel 111 and the outlet channel 121 are connected, so that the cooling medium can enter the liquid cooling harness 1 from the inlet channel 111 and then exit the liquid cooling channel from the outlet channel 121, so that the liquid cooling medium can carry away heat during the flow process and achieve cooling.

[0062] Furthermore, by setting an inlet channel 111 in the first cable 11 and an outlet channel 121 in the second cable 12, cooling can be achieved, and the outer surface temperature of the insulating tube 14 can be controlled to be ≤70℃. This results in a lower temperature for the insulating tube 14, which facilitates increasing the charging current and improving the user experience.

[0063] Optionally, each of the first cable 11 and the second cable 12 includes at least one cable. The minimum radial dimension of each first cable 11 from the inner wall of the insulating tube 14 is smaller than the minimum radial dimension of the second cable 12 from the inner wall of the insulating tube 14. This makes it easier to make the first cable 11 closer to the insulating tube 14 than the second cable 12, which helps to reduce the temperature of the insulating tube 14.

[0064] Specifically, 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.

[0065] Specifically, the number of first cables 11 can be at least one, and the number of second cables 12 can be at least one. For example, the number of first cables 11 is one, and the number of second cables 12 is one; the number of first cables 11 is one, and the number of second cables 12 is at least two; the number of first cables 11 is at least two, and the number of second cables 12 is one. In any combination of first cables 11 and second cables 12, the minimum radial distance of each first cable 11 from the inner wall of the insulating tube 14 is less than the minimum radial distance of each second cable 12 from the inner wall of the insulating tube 14.

[0066] In some embodiments, the inner diameter of the insulating tube 14 is greater than or equal to the sum of the outer diameters of at least two first cables 11 and at least one second cable 12. Thus, at least two first cables 11 and at least one second cable 12 can be distributed along the radial direction of the insulating tube 14, which facilitates the arrangement of more cables inside the insulating tube 14.

[0067] Optionally, the number of first cables 11 can be greater than the number of second cables 12, so that the number of liquid inlet channels 111 can be greater than the number of liquid outlet channels 121, which can further improve the cooling capacity of the liquid cooling harness 1.

[0068] Optionally, the liquid-cooled wiring harness 1 also includes a liquid inlet pipe 16, which can be located close to the second cable 12, or the liquid inlet pipe 16 can be in contact with the second cable 12 to facilitate cooling of the second cable 12 through the liquid inlet pipe 16.

[0069] Specifically, the inlet pipe 16 is positioned close to the second cable 12, so that the minimum distance between the inlet pipe 16 and the second cable 12 is small. The minimum distance between the inlet pipe 16 and the second cable 12 can be less than the minimum distance between the inlet pipe 16 and the first cable 11.

[0070] Optionally, the inlet pipe 16 is connected to the outlet channel 121, so that the cooling medium in the inlet pipe 16 can be discharged through the outlet channel 121.

[0071] In this embodiment of the invention, an inlet pipe 16 is added to increase the number of paths through which the cooling medium enters the liquid cooling harness 1, thereby further improving the cooling capacity of the liquid cooling harness 1.

[0072] Specifically, the liquid inlet pipe 16 can make point contact, line contact, or surface contact with the second cable 12.

[0073] Specifically, when there are at least two second cables 12, the liquid inlet pipe 16 is disposed between at least two second cables 12, and the cooling medium in the liquid inlet pipe 16 can also cool the second cables 12 to reduce the temperature of the second cables 12.

[0074] Specifically, the liquid inlet pipe can be set between any two second cables 12, or the liquid inlet pipe 16 can be set at the center of the insulating pipe 14, so that at least two second cables 12 can be arranged around the liquid inlet pipe 16, which is convenient to reduce the temperature of the medium after it flows out of the liquid outlet channel 121, and to reduce the temperature of the center of the liquid cooling harness 1, which can improve the temperature distribution of the liquid cooling harness 1 in the radial direction.

[0075] Specifically, the cooling medium can enter the liquid cooling harness 1 through the inlet pipe 16 and then flow out of the liquid cooling harness 1 through the outlet channel 121. Specifically, the number of inlet pipes 16 can be one or at least two, etc., which can be selected according to actual needs. This embodiment of the invention does not make a specific limitation in this regard.

[0076] Specifically, one inlet pipe 16 can be connected to the outlet channel 121 in one second cable 12, or multiple inlet pipes 16 can be connected to the outlet channel 121 in one second cable 12, or one inlet pipe 16 can be connected to the outlet channels 121 in multiple second cables 12 respectively. The embodiments of the present invention do not make specific limitations in this regard.

[0077] Specifically, the inlet pipe 16 can be a circular pipe, a square pipe, or an irregularly shaped pipe, such as... Figure 1 This illustrates a case where the inlet pipe 16 is a star-shaped pipe, with the inlet pipe 16 filling the space between the four second cables 12. Other cases can be set up similarly.

[0078] Optionally, the liquid inlet pipe 16 includes a heat-conducting part that wraps around 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, this facilitates the cooling medium flowing in the liquid inlet pipe 16 to cool the second cable 12. On the other hand, it makes the liquid inlet pipe 16 and the second cable 12 fit more tightly, increasing the filling rate in the insulating tube 14. This can prevent the cooling medium in the second cable 12 from being interrupted when the liquid-cooled wire harness 1 is bent.

[0079] Optionally, the liquid-cooled wiring harness 1 also includes a support member 15, which is disposed inside the insulating tube 14 to fix the position of the first cable 11 and the second cable 12 inside the insulating tube 14, thereby preventing the cooling medium in the first cable 11 and the second cable 12 from being interrupted when the liquid-cooled wiring harness 1 is bent.

[0080] Specifically, the support member 15 can fill the gap between two adjacent first cables 11, the gap between two adjacent first cables 11 and second cables 12, and the gap between two adjacent second cables 12, effectively improving the support strength for the first cables 11 and second cables 12.

[0081] Specifically, the support member 15 can support the first cable 11 and the second cable 12, reduce the deformation of the first cable 11 and the second cable 12, ensure the unobstructed flow of the liquid inlet channel 111 and the liquid outlet channel 121, and improve the cooling effect of the liquid cooling harness 1. The specific material of the support member 15 is not limited in this embodiment of the invention.

[0082] Optionally, the liquid cooling harness 1 also includes a third cable 13, which is spaced apart from the first cable 11 and the second cable 12.

[0083] In this embodiment of the invention, the first cable 11 and the second cable 12 are positive and negative cables, which generate a lot of heat during charging. The third cable 13 is arranged at intervals from the first cable 11 and the second cable 12, which can prevent the temperature of the third cable 13 from rising.

[0084] Specifically, the third cable 13 may include, but is not limited to, the first signal line 131, the second signal line 132, the ground line 133, and the auxiliary power line 134.

[0085] The liquid-cooled wiring harness described in the embodiments of the present invention has at least the following advantages:

[0086] In this embodiment of the invention, since the first cable has a liquid inlet channel and the second cable can have a liquid outlet channel, the liquid-cooled wiring harness can be circulated with a liquid cooling medium to achieve a cooling function, which facilitates increased charging current and ensures charging efficiency. The temperature of the outlet channel is higher than that of the inlet channel. Because the first cable is positioned closer to the insulating tube than the second cable, the inlet channel can mitigate the outward transfer of central heat, resulting in a more uniform temperature distribution across the cross-section of the liquid-cooled wiring harness. This facilitates lowering the temperature of the insulating tube, thereby reducing the contact temperature of the liquid-cooled wiring harness and improving the user experience. In other words, the liquid-cooled wiring harness of this invention can simultaneously deliver a larger charging current and meet user experience requirements.

[0087] Secondly, embodiments of the present invention disclose a connector assembly, such as... Figure 3 As shown, the connector assembly includes the aforementioned liquid-cooled wiring harness 1. Since the liquid-cooled wiring harness 1 has a cooling function, it is easy for the connector assembly to adapt to the requirements of a larger charging current.

[0088] Optionally, the connector assembly also includes two liquid-cooled terminals, which can be electrically connected to the first cable 11 and / or the second cable 12 respectively, to facilitate charging of the device to be charged and to achieve cooling during the charging process.

[0089] Specifically, the two liquid-cooled terminals 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 cables together constitute the positive terminal of the connector assembly, and the negative terminal and the negative cables together constitute the negative terminal of the connector assembly.

[0090] In some embodiments, all the first cables 11 are positive cables and all the second cables 12 are negative cables, so that 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.

[0091] In other embodiments, such as Figures 4 to 6 As shown, in both the first cable 11 and the second cable 12, half can be a positive cable and the other half a negative cable, so that the positive terminal can be electrically connected to one half of the first cable 11 and the other half of the second cable 12 respectively, and the negative terminal can be electrically connected to the remaining half of the first cable 11 and the other half of the second cable 12. This is beneficial to achieve the same heat dissipation performance and temperature for the two liquid-cooled terminals.

[0092] Optionally, each liquid-cooled terminal 3 is electrically connected to the first cable 11 and the second cable 12 respectively, so that the two liquid-cooled terminals 3 do not share a cooling circuit, achieving cooling isolation. In this way, if there is a possibility of cooling medium leakage or failure due to contamination in one liquid-cooled terminal 3, only that liquid-cooled terminal 3 will be affected, that is, the positive and negative terminals will not affect each other, which can reduce the risk of short circuit. Furthermore, the flow rate of the cooling medium on the positive and negative terminals can be independently controlled. In the event of cooling medium leakage, the input of cooling medium can be directly cut off to reduce losses.

[0093] Optionally, each liquid-cooled terminal 3 is electrically connected to at least two first cables 11 to ensure that the liquid inlet channel 111 in at least one first cable 11 remains operational, preventing interruption of the cooling medium flow and improving safety. Similarly, each liquid-cooled terminal 3 is electrically connected to at least two second cables 12 to ensure that the liquid outlet channel 121 in at least one second cable 12 remains operational, preventing interruption of the cooling medium flow and improving safety.

[0094] Optionally, the liquid-cooled terminal 3 includes a plug 31 and a housing assembly 32. The housing assembly 32 has a cooling cavity 321 suitable for containing a cooling medium. The cooling cavity 321 is connected to the liquid inlet channel 111 and the liquid outlet channel 121, respectively, so that 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. This allows the cooling medium to cool and reduce the temperature of the liquid-cooled wire harness 1 and the liquid-cooled terminal 3 simultaneously, which helps to reduce the temperature of the connector assembly and improve the service life of the connector assembly.

[0095] Optionally, the connector 31, the first cable 11 and / or the second cable 12 can all be at least partially disposed in the cooling cavity 321, and the connector 31 is electrically connected to the first cable 11 and / or the second cable 12, so as to facilitate the connection between the liquid-cooled terminal 3 and the liquid-cooled wiring harness 1, and realize the charging of the device to be charged.

[0096] Specifically, the connector 31 can be fixed to the first cable 11 by welding or by bonding with conductive adhesive, and the connector 31 can be fixed to the second cable 12 by welding or by bonding with conductive adhesive.

[0097] Specifically, one liquid-cooled terminal 3 connector 31 can be electrically connected to the first cable 11, and the other liquid-cooled terminal 3 connector 31 can be electrically connected to the second cable 12. Alternatively, each liquid-cooled terminal 3 connector 31 can be electrically connected to the first cable 11 and the second cable 12 respectively.

[0098] Optionally, the connector 31 includes a plug-in portion 312 and a connecting portion 311 connected to each other. The connecting portion 311 is disposed inside the cooling cavity 321, and the plug-in portion 312 is disposed outside the cooling cavity 321. In this way, the first cable 11 and / or the second cable 12 can be connected through the connecting portion 311, and the plug-in portion 312 can be electrically connected to the device to be charged.

[0099] Optionally, the connecting part 311 is provided with at least one cooling channel 3112, both ends of which are connected to the cooling cavity 321.

[0100] In this embodiment of the invention, by providing a cooling channel 3112 on the connecting part 311, the contact area between the liquid-cooled terminal 3 and the cooling medium can be increased, thereby improving the cooling effect on the liquid-cooled terminal 3.

[0101] Specifically, the number of cooling channels 3112 may include one or at least two, which can be selected according to actual needs. This embodiment of the invention does not impose a specific limitation on this.

[0102] Specifically, the cooling channel 3112 can be straight or curved, and the embodiments of the present invention do not specifically limit it in this regard.

[0103] Specifically, the connecting part 311 can divide the cooling cavity 321 into two sub-cooling cavities 321, or the connecting part 311 can be spaced apart from the inner wall of the cooling cavity 321. This embodiment of the invention does not specifically limit this.

[0104] Optionally, the connecting part 311 can divide the cooling chamber 321 into a first sub-cooling chamber 3211 and a second sub-cooling chamber 3212. The liquid inlet channel 111 is connected to the first sub-cooling chamber 3211, and the liquid outlet channel 121 is connected to the second sub-cooling chamber 3212. One end of the cooling channel 3112 is connected to the first sub-cooling chamber 3211, and the other end is connected to the second sub-cooling chamber 3212.

[0105] In this embodiment of the invention, 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, which can improve the cooling effect on the liquid-cooled terminal 3.

[0106] In some embodiments, the connector 31 may be a metal part, and the connecting part 311 may be welded and fixed to the first cable 11 and / or the second cable 12 respectively.

[0107] Taking the simultaneous welding of the first cable 11 and the second cable 12 to the connecting part 311 as an example, the first sidewall of the connecting part 311 can be welded to the first cable 11, and the second sidewall of the connecting part 311 can be welded to the second cable 12. The first cable 11 and the second cable 12 can be welded to opposite sides of the connecting part 311 using ultrasonic double-sided welding, simplifying the manufacturing process of the connector assembly. Furthermore, compared to crimping the connecting part 311 with the first cable 11 and the second cable 12, the resistance of the liquid-cooled terminal 3 can be reduced by 2 / 3, resulting in less heat generation.

[0108] Optionally, such as Figure 6 and Figure 7 As shown, the connecting part 311 is provided with a plurality of spaced-apart baffles 3111 on the side facing the first sub-cooling chamber 3211, and / or the connecting part 311 is provided with a plurality of spaced-apart baffles 3111 on the side facing the second sub-cooling chamber 3212, which can increase the contact area between the liquid-cooled terminal 3 and the cooling medium and improve the cooling effect on the liquid-cooled terminal 3.

[0109] Optionally, the flow deflector 3111 may include a first sidewall and a second sidewall along the first direction. The first sidewall and the inner wall of the cooling cavity 321 enclose a first sub-cooling cavity 3211, and the second sidewall and the inner wall of the cooling cavity 321 enclose a second sub-cooling cavity 3212. The first direction is the direction from the first sidewall to the second sidewall. The shape of the cross-section of the flow deflector 3111 perpendicular to the first direction includes at least one of polygon, circle, and ellipse. Alternatively, the flow deflector 3111 may be a heat dissipation fin, making the structure of the flow deflector more diverse.

[0110] Specifically, the flow deflector 3111 is a heat dissipation fin. Compared with other common flow deflectors 3111, such as those with a circular or square cross-section perpendicular to the first direction, the flow resistance is smaller, the contact area between the liquid-cooled terminal 3 and the cooling medium can be increased by 118%, the heat dissipation capacity can be increased by 120%, and the equivalent charging current can be increased by 1.5 times.

[0111] In some alternative embodiments, the housing assembly 32 may further include a housing 322 and a tail plate 323, which are connected and can enclose a cooling cavity 321 to accommodate a cooling medium. The connector 31 may further include a transition portion 313, which can be connected between the connecting portion 311 and the connector 312. The transition portion 313 can pass through the housing 322 on the side opposite to the tail plate 323, and both the first cable 11 and the second cable 12 can pass through the tail plate 323.

[0112] Specifically, during the assembly of the connector assembly, the plug 31 can be first inserted into the side of the housing 322 opposite to the tail plate 323; then the connecting part 311 can be pulled out of the housing 322; the first cable 11 and the second cable 12 can be soldered to the connecting part 311; the connecting part 311, the first cable 11 and the second cable 12 can be placed into the housing 322; and then the tail plate 323 and the housing 322 can be fixed. The entire assembly process is simple to operate and can also avoid pulling the first cable 11 and the second cable 12, thus ensuring the quality of the connector assembly.

[0113] Specifically, the connector 31, housing 322, and tailplate 323 can be connected by bolts to improve assembly convenience. In other cases, the connector 31 and housing 322, as well as the housing 322 and tailplate 323, can be installed separately.

[0114] Optionally, the connector assembly may further include a first seal 51 and a second seal 52; the transition portion 313 may be sealed to the housing 322 via the first seal 51; the tail plate 323 may be sealed to the housing 322 via the second seal 52, which can improve the sealing performance of the cooling chamber 321 and prevent short circuits caused by leakage of cooling medium.

[0115] Optionally, the connector assembly may further include a locking element 4, which can lock the first cable 11 and / or the second cable 12 to the tail plate 323.

[0116] Specifically, the number of locking elements 4 can be equal to the sum of the number of the first cable 11 and the second cable 12. One locking element 4 can be used to fix one first cable 11 or one second cable 12. The locking element 4 can be a retaining ring or a latch, suitable for fixing the first cable 11 or the second cable 12 to the tail plate 323. The locking element 4 can be fixed to the tail plate 323 by bolts or latches.

[0117] Furthermore, the connector assembly may also include a temperature sensor and / or a leakage sensor, and a slot 3121 is provided at one end of the plug portion 312 near the connection portion 311; the temperature sensor and / or the leakage sensor is installed in the slot 3121.

[0118] In this embodiment of the invention, the temperature of the liquid-cooled terminal 3 can be detected by a temperature sensor, and the temperatures of the positive and negative terminals can be monitored independently, facilitating real-time adjustment of the temperatures of different liquid-cooled terminals 3 and ensuring temperature consistency between the positive and negative terminals. A leakage sensor can detect whether the cooling medium in the cooling chamber 321 is leaking, which can improve the safety of the connector assembly.

[0119] Specifically, the number of slots 3121 can be one or two, and one slot 3121 can be used to fix a temperature sensor and / or a leakage sensor.

[0120] The connector assembly described in the embodiments of the present invention has at least the following advantages:

[0121] In this embodiment of the invention, since the first cable has a liquid inlet channel and the second cable can have a liquid outlet channel, the liquid-cooled wiring harness can be circulated with a liquid cooling medium to achieve a cooling function, which facilitates increased charging current and ensures charging efficiency. The temperature of the outlet channel is higher than that of the inlet channel. Because the first cable is positioned closer to the insulating tube than the second cable, the inlet channel can mitigate the outward transfer of central heat, resulting in a more uniform temperature distribution across the cross-section of the liquid-cooled wiring harness. This facilitates lowering the temperature of the insulating tube, thereby reducing the contact temperature of the liquid-cooled wiring harness and improving the user experience. In other words, the liquid-cooled wiring harness of this invention can simultaneously deliver a larger charging current and meet user experience requirements.

[0122] Thirdly, embodiments of the present invention also disclose a charging gun, including the above-mentioned liquid-cooled wiring harness or the above-mentioned connector assembly.

[0123] like Figure 8 The diagram illustrates the appearance of a charging gun. The charging gun described in this embodiment of the invention may include the liquid-cooled wiring harness or the connector assembly described above, and can achieve the same beneficial effects as the liquid-cooled wiring harness or the connector assembly described above. This embodiment of the invention will not elaborate further on these aspects.

[0124] Fourthly, embodiments of the present invention also disclose a charging device, including the above-described liquid-cooled wiring harness or the above-described connector assembly.

[0125] Specifically, the charging device described in the embodiments of the present invention can be an on-board charging device or a non-on-board charging device such as a charging pile.

[0126] The charging device described in this embodiment of the invention may include the liquid-cooled wiring harness or the connector assembly described above, and can achieve the same beneficial effects as the liquid-cooled wiring harness or the connector assembly described above. This embodiment of the invention will not elaborate further on these aspects.

[0127] Fifthly, embodiments of the present invention also disclose a vehicle including the above-described liquid-cooled wiring harness or the above-described connector assembly.

[0128] The vehicle described in this embodiment of the invention may include the liquid-cooled wiring harness or the connector assembly described above, and can achieve the same beneficial effects as the liquid-cooled wiring harness or the connector assembly described above. This embodiment of the invention will not elaborate further on this.

[0129] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0130] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0131] The liquid-cooled wiring harness, connector assembly, charging gun, charging equipment, and vehicle provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A liquid-cooled wiring harness characterized by, The liquid-cooled wire harness (1) comprises: a first cable (11) provided with a liquid inlet channel (111) therein; a second cable (12) provided with a liquid outlet channel (121) therein; an insulation tube (14) in which the first cable (11) and the second cable (12) are 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, The outer surface temperature of the insulation tube (14) is ≤70℃.

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

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

6. The liquid-cooled wiring harness of claim 1, wherein, The liquid-cooled wire harness (1) further comprises 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, wherein, The liquid inlet tube (16) comprises 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 (12).

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

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

11. The liquid-cooled wiring harness of claim 1, 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 characterized by, The connector assembly comprises the liquid-cooled wire 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 with the first cable (11) and / or the second cable (12) respectively.

14. The connector assembly of claim 13, wherein, The liquid-cooled terminal (2) comprises a plug (31) and a housing assembly (32) having a cooling cavity (321) adapted to contain a cooling medium, and the cooling cavity (321) is in communication with the liquid inlet channel (111) and the liquid outlet channel (121). The plug (31), the first cable (11) and / or the second cable (12) are at least partially arranged in the cooling cavity (321), and the plug (31) is electrically connected with the first cable (11) and / or the second cable (12).

15. The connector assembly of claim 14, wherein, The plug (31) comprises a plug portion (312) and a connecting portion (311) connected with each other, the connecting portion (311) is arranged in the cooling cavity (221), and the plug portion (212) is arranged outside the cooling cavity (321). The connecting portion (311) is provided with at least one cooling channel (3112), both ends of the cooling channel (3112) communicate with the cooling cavity (321).

16. The connector assembly of claim 15, wherein, The connecting portion (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). One end of the cooling channel (3112) communicates with the first sub-cooling cavity (3211), and the other end communicates with the second sub-cooling cavity (3212).

17. The connector assembly of claim 16, wherein, The connecting portion (311) is provided with a plurality of spaced apart turbulence elements (3111) on one side facing the first sub-cooling cavity (3211), and / or the connecting portion (311) is provided with a plurality of spaced apart turbulence elements (3111) on one side facing the second sub-cooling cavity (3212).

18. A charging gun, characterized in that A liquid-cooled wiring harness according to any one of claims 1 to 11 or a connector assembly according to any one of claims 12 to 17.

19. A charging device, comprising: A liquid-cooled wiring harness according to any one of claims 1 to 11 or a connector assembly according to any one of claims 12 to 17.

20. A vehicle characterized by comprising: A liquid-cooled wiring harness according to any one of claims 1 to 11 or a connector assembly according to any one of claims 12 to 17.

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