Wire core, cable, charging device, electric equipment and wire core manufacturing method

Abstract

The invention discloses a wire core, a cable, a charging device, electric equipment and a wire core manufacturing method, relates to the technical field of vehicles, and aims to solve the problem that the charging efficiency is reduced due to the temperature rise of the cable during charging and discharging. At least part of the wire core is provided with a cooling channel, and the cooling channel is used for circulation of a cooling medium.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a wire core, a cable, a charging device, an electrical device and a method for manufacturing the wire core. Background Art

[0002] New energy electric vehicles are a kind of green transportation tool driven by electric energy. At present, one of the main problems in the development of new energy electric vehicles is the long charging time. To solve the problem of fast charging of new energy electric vehicles, it is necessary to increase the power of the charging pile and improve the charging voltage and charging current output by the charging pile.

[0003] At present, the cables commonly used in new energy vehicles are integrated with multiple cores. The material of the core is usually thin copper wire or aluminum. The cable will have a certain temperature rise during charging or discharging. Under the same wire diameter, the greater the charging and discharging power, the greater the cable temperature rise. The higher the temperature, the greater the cable resistance, and the lower the charging efficiency.

[0004] Therefore, the problem that the charging and discharging efficiency decreases due to the increase in cable temperature during charging and discharging needs to be solved. Summary of the invention

[0005] The object of the present invention is to provide a wire core, a cable, a charging device, an electrical device and a wire core manufacturing method, aiming to solve the problem of reduced charging and discharging efficiency caused by cable temperature rise during charging and discharging.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: the present invention provides a wire core, at least part of which is provided with a cooling channel, and the cooling channel is used for the circulation of cooling medium.

[0007] The present application sets a cooling channel inside the wire core, and the cooling channel is used for the circulation of cooling medium. The cooling medium can take away the heat generated by the wire core during charging and discharging, thereby reducing the temperature of the wire core and avoiding the reduction of charging and discharging efficiency due to the increase in temperature of the wire core during charging.

[0008] In some embodiments of the present application, the cooling channel includes an axial section extending along the length direction of the wire core.

[0009] In this way, the cooling channel is provided with an axial section extending along the length direction of the wire core. The axial section of the cooling channel can increase the contact area between the cooling channel and the wire core, improve the heat exchange efficiency between the cooling medium in the cooling channel and the wire core, and then improve the cooling efficiency of the cooling channel, thereby avoiding the temperature rise of the wire core during charging, resulting in a decrease in charging and discharging efficiency.

[0010] In some embodiments of the present application, the wire core includes a conductive core, and the conductive core is provided with an axial segment.

[0011] In this way, the wire core is provided with a conductive core so that the wire core can conduct electricity and realize the charging function of the wire core. An axial section is provided on the conductive core so that the wire core has a cooling function, so that the wire core does not need to be additionally provided with a cooling channel, thereby reducing the overall size of the wire core and making the wire core more convenient to install.

[0012] In some embodiments of the present application, along a first direction, a ratio of a maximum dimension R1 of the axial segment to a maximum dimension R2 of the conductive core is less than or equal to 0.1, and the first direction is perpendicular to a length direction of the core.

[0013] In this way, the ratio of the maximum dimension R1 of the axial segment to the maximum dimension R2 of the conductive core is less than or equal to 0.1, so that the conductive core has a larger area for conduction under the same cross-section, thereby making the conductive core more efficient.

[0014] In some embodiments of the present application, the ratio of the maximum dimension R1 of the axial segment to the maximum dimension R2 of the conductive core is greater than or equal to 0.05.

[0015] In this way, the ratio of the maximum dimension R1 of the axial section to the maximum dimension R2 of the conductive core is greater than or equal to 0.05, so as to avoid the axial section of the cooling channel being too small, which may cause the conductive core to deform or block the cooling channel during bending, making it impossible for the cooling channel to cool down normally.

[0016] In some embodiments of the present application, the wire core includes at least two straight segments and at least one curved segment, and one curved segment is connected between two adjacent straight segments; the axial segment includes at least two straight channels and at least one curved channel, the curved channel is arranged in the curved segment, the straight channel is arranged in the straight segment, and one curved channel is connected between two adjacent straight channels.

[0017] In this way, the wire core includes at least two straight segments and at least one curved segment, so that the wire core can be bent according to the use environment to adapt to different use environments. The axial segment includes at least two straight channels and at least one curved channel, so that the straight segments and curved segments of the wire core can be cooled to avoid the temperature of the wire core from rising, which leads to a decrease in the conductive efficiency of the wire core.

[0018] In some embodiments of the present application, the cross-sectional area of ​​the curved channel is equal to the cross-sectional area of ​​the straight channel.

[0019] In this way, the cross-sectional area of ​​the curved channel is equal to the cross-sectional area of ​​the straight channel, so that the cooling medium can flow more smoothly in the cooling channel, and the cooling medium can flow evenly in the cooling channel, so that the heat can be evenly dissipated at all parts of the wire core.

[0020] In some embodiments of the present application, the cooling channel also includes a first radial segment and a second radial segment spaced apart along the length direction of the wire core, the first radial segment and the second radial segment are both connected to the axial segment, and both penetrate to the outer surface of the wire core along a second direction, and the second direction is perpendicular to the first direction.

[0021] In this way, the first radial segment and the second radial segment are both connected to the axial segment, so that the cooling channel can pass through the first radial segment and the second radial segment to allow the cooling medium to flow in and out. The first radial segment and the second radial segment both penetrate along the second direction to the outer surface of the wire core, so that the inlet and outlet of the cooling channel can be located on the outer peripheral wall of the wire core, avoiding the position of the inlet and outlet of the cooling channel affecting the connection between the wire core and other external conductive parts.

[0022] In some embodiments of the present application, the wire core further includes a sealing assembly, which surrounds the conductive core and is provided with at least one guide hole, which is connected to at least one of the first radial segment and the second radial segment.

[0023] In this way, by setting up a sealing component, the cooling medium in the cooling channel can flow with the cold source through the guide holes in the sealing component. In this way, the sealing component can seal the connection between the cold source and the cooling channel to prevent leakage of the cooling medium, which may cause the wire core to fail to work normally.

[0024] In some embodiments of the present application, the conductive core and the sealing component are interference fit.

[0025] In this way, by interference fitting the conductive core and the sealing assembly, the conductive core and the sealing assembly can be sealed and connected, thereby preventing the cooling medium from leaking from between the sealing assembly and the conductive core, causing the wire core to fail to work normally.

[0026] In some embodiments of the present application, at least one flow guide hole includes a first flow guide hole and a second flow guide hole; the sealing assembly includes a first seal and a second seal arranged at an axial interval along the wire core, and the first seal and the second seal both surround the conductive core; the first flow guide hole is arranged in the first seal and is connected to the first radial segment, and the first flow guide hole is arranged in the second seal and is connected to the second radial segment.

[0027] In this way, a first seal is provided at the first radial segment and a second seal is provided at the second radial segment, so that the connections between the first radial segment and the second radial segment and the cold source can be sealed to avoid leakage of cooling medium, which may cause the core to fail to work normally.

[0028] In some embodiments of the present application, at least one flow guide pipe is further included, which is connected to the flow guide hole and is used for connecting an external cooling medium.

[0029] In this way, a flow guide pipe connected to the flow guide hole is provided, and the flow guide pipe is connected to an external cooling medium, and the flow guide pipe can facilitate the communication between the flow guide channel and the external cooling medium.

[0030] In some embodiments of the present application, the flow guide tube and the sealing assembly are an integral structure or a separate structure.

[0031] In this way, the integral structure of the guide tube and the sealing assembly can make the sealing between the guide tube and the sealing assembly stronger and avoid leakage of the cooling medium. The separate structure of the guide tube and the sealing assembly facilitates the installation of the sealing assembly and the guide tube.

[0032] In some embodiments of the present application, the central axis of the axial segment coincides with the central axis of the wire core.

[0033] In this way, the central axis of the axial section is overlapped with the central axis of the wire core, so that the distances from each part of the wire core to the axial section can be relative, so that the cooling medium in the axial section can evenly cool the wire core and improve the cooling efficiency of the cooling channel.

[0034] In some embodiments of the present application, the wire core further includes at least one connecting member, which is disposed at an end of the conductive core and is suitable for connecting to an external conductive member.

[0035] In this way, a connector is provided at the end of the conductive core, which not only facilitates the connection between the core and the external conductive member, but also protects the connection between the core and the external conductive member.

[0036] In some embodiments of the present application, the wire core further includes an insulating layer, and the insulating layer is disposed on the outer peripheral wall surface of the conductive core.

[0037] In this way, an insulating layer is provided on the outer peripheral wall of the conductive core, so that the core can be insulated from the outside, thereby preventing the current flowing through the core from causing damage to external objects, thereby improving the safety of the core.

[0038] The present application also provides a cable, comprising at least one wire core.

[0039] Since the cable provided in the embodiment of the present application includes the wire core as described above, the two can solve the same problem and achieve the same effect, and the present application will not describe them one by one here.

[0040] The present application also provides a charging and discharging device, including a wire core; or including a cable.

[0041] Since the charging and discharging device provided in the embodiment of the present application includes the wire core or cable as described above, the two can solve the same problem and achieve the same effect, and the present application will not describe them one by one here.

[0042] The present application also provides an electrical device, including a wire core; or including a cable; or including a charging and discharging device.

[0043] Since the electrical equipment provided in the embodiments of the present application includes the wire core, or cable, or charging and discharging device as described above, the two can solve the same problem and achieve the same effect, and the present application will not elaborate on them one by one.

[0044] The present application also provides a wire core manufacturing method, comprising: obtaining a wire core having a cooling channel; filling the cooling channel with molding material; bending the wire core filled with the molding material according to a preset shape; and taking the molding material out of the cooling channel.

[0045] In this way, the present application fills the cooling channel with molding material and then bends the wire core filled with molding material according to a preset shape, so that the cooling channel can be supported by the molding material when the wire core is bent, thereby preventing the cooling channel from being squeezed and deformed, causing the cooling channel to be blocked or the cross-sectional area to become smaller, and reducing the cooling efficiency of the cooling channel, thereby reducing the charging and discharging efficiency of the wire core.

[0046] In some embodiments of the present application, the molding material is a hot melt material; filling the molding material into the cooling channel includes: heating the hot melt material to melt the hot melt material into a liquid state, and filling the liquid hot melt material into the cooling channel; cooling the liquid hot melt material to solidify the hot melt material into a solid state.

[0047] In some embodiments of the present application, taking the molding material out of the cooling channel includes: heating the hot melt material again to melt the hot melt material into a liquid state; and pouring the liquid hot melt material out of the cooling channel.

[0048] In this way, by using hot-melt material as the molding material, the hot-melt material can be heated to melt the hot-melt material into a liquid state, and the liquid hot-melt material can be filled into the cooling channel. Then, the hot-melt material can be heated again to melt the hot-melt material into a liquid state; the liquid hot-melt material can be poured out from the cooling channel to facilitate the filling and pouring of the molding material. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 An axial cross-sectional view of a wire core is provided for the present application;

[0051] Figure 2 An enlarged view of the end of a wire core is provided for this application;

[0052] Figure 3 A radial cross-sectional view of a wire core is provided for the present application;

[0053] Figure 4 An axial cross-sectional view of a bent wire core is provided for the present application.

[0054] Reference numerals:

[0055] 100, wire core; 10, cooling channel; 11, axial section; 21, straight section; 22, curved section; 111, straight channel; 112, curved channel; 12, first radial section; 13, second radial section; 30, sealing assembly; 31, flow guide hole; 32, first sealing member; 33, flow guide tube; 40, connecting member; 50, insulating layer. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside" and the like indicate directions or positional relationships based on the directions or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Unless otherwise specified, the above-mentioned directional description can be flexibly set in the process of actual application under the condition that the relative positional relationship shown in the accompanying drawings is satisfied.

[0058] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the embodiments of the present invention, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0061] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0062] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0063] At present, the cables commonly used in new energy vehicles are integrated with multiple cores. The cables will have a certain temperature rise during charging or discharging. The greater the charging and discharging power, the greater the temperature rise of the cable. The higher the temperature, the greater the cable resistance, and the lower the charging efficiency.

[0064] The present application also provides an electrical device, including a wire core; or including a cable; or including a charging and discharging device.

[0065] Among them, the electrical equipment can be, for example, a vehicle or an aircraft, and for the convenience of describing this application, the vehicle is taken as an example below.

[0066] The vehicle may be a new energy vehicle or a hybrid vehicle, which is not limited in this application.

[0067] The vehicle may include an electric drive device, a charging and discharging device, and a body. The electric drive device includes a motor, a controller, a power converter, etc., which is responsible for converting electrical energy into mechanical energy to drive the vehicle.

[0068] The charging and discharging device is used to store electricity and is responsible for providing electrical energy to the electric drive device.

[0069] The body consists of the body shell, compartment and chassis. The body materials usually use lightweight metal or high-strength plastic to reduce the overall weight of the vehicle and improve energy efficiency.

[0070] The present application also provides a charging and discharging device, including a wire core or a cable.

[0071] Among them, the charging and discharging device can also include a battery, a charger and a charging port, etc. The battery provides energy for the electric drive device, the charger is used to connect an external power source and a charging port to charge the battery, and the cable or wire core 100 is used to connect the various components of the charging and discharging device to each other.

[0072] The present application also provides a cable, comprising at least one wire core.

[0073] Among them, the cable can be composed of multiple cores integrated into a wire harness, and then a plastic insulating sheath is arranged outside the wire harness. The cable can also be composed of a single core, which is not limited in this application.

[0074] In order to achieve the above object, the present invention adopts the following technical scheme: Figure 1 As shown, the present invention provides a wire core 100 , at least a portion of the wire core 100 is provided with a cooling channel 10 , and the cooling channel 10 is used for the circulation of a cooling medium.

[0075] The cooling channel 10 may extend along the axial direction of the wire core 100 , or may extend along the radial direction of the wire core 100 , or may be in a curved shape inside the wire core 100 , which is not limited in the present application.

[0076] The cooling medium may be a gas cooling medium, mainly including nitrogen, oxygen, argon, carbon dioxide and a small amount of other gases such as neon, helium, etc. The cooling medium may also be a liquid cooling medium, the main components of which are ethylene glycol and water.

[0077] The present application sets a cooling channel 10 inside the wire core 100, and the cooling channel 10 is used for the circulation of cooling medium. The cooling medium can take away the heat generated by the wire core 100 during charging and discharging, thereby reducing the temperature of the wire core 100 and avoiding the temperature increase of the wire core 100 during charging, which leads to a decrease in charging and discharging efficiency.

[0078] In some embodiments of the present application, the cooling channel 10 includes an axial section 11 extending along the length direction of the core 100 .

[0079] In this way, the cooling channel 10 is provided with an axial section 11 extending along the length direction of the wire core 100. The axial section 11 of the cooling channel 10 can increase the contact area between the cooling channel 10 and the wire core 100, improve the heat exchange efficiency between the cooling medium in the cooling channel 10 and the wire core 100, and further improve the cooling efficiency of the cooling channel 10, thereby avoiding the temperature increase of the wire core 100 during charging, resulting in a decrease in the charging and discharging efficiency.

[0080] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the wire core 100 includes a conductive core 20 , and the conductive core 20 is provided with an axial section 11 .

[0081] The conductive core 20 may be made of zinc, copper, aluminum or other alloy materials, which is not limited in the present application.

[0082] In this way, the wire core 100 is provided with a conductive core 20 so that the wire core 100 can be conductive and realize the charging function of the wire core 100, and an axial section 11 is provided on the conductive core 20 so that the wire core 100 has a cooling function, so that the wire core 100 does not need to be additionally provided with a cooling channel 10, thereby reducing the overall size of the wire core 100 and making the wire core 100 more convenient to install.

[0083] In some embodiments of the present application, Figure 2 and Figure 3 As shown, along a first direction, a ratio of a maximum dimension R1 of the axial segment 11 to a maximum dimension R2 of the conductive core 20 is less than or equal to 0.1, and the first direction is perpendicular to a length direction of the core 100 .

[0084] The ratio of the maximum dimension R1 of the axial segment 11 to the maximum dimension R2 of the conductive core 20 may be 0.1, 0.08, 0.06, 0.04, etc.

[0085] In this way, the ratio of the maximum dimension R1 of the axial segment 11 to the maximum dimension R2 of the conductive core 20 is less than or equal to 0.1, so that the conductive core 20 has a larger area for conduction under the same cross-section, thereby making the conductive core 20 more efficient.

[0086] In some embodiments of the present application, a ratio of a maximum dimension R1 of the axial segment 11 to a maximum dimension R2 of the conductive core 20 is greater than or equal to 0.05.

[0087] The ratio of the maximum dimension R1 of the axial segment 11 to the maximum dimension R2 of the conductive core 20 may be 0.05, 0.07, 0.09, etc., which is not limited in the present application.

[0088] In this way, the ratio of the maximum dimension R1 of the axial section 11 to the maximum dimension R2 of the conductive core 20 is greater than or equal to 0.05, thereby preventing the axial section 11 of the cooling channel 10 from being too small, which may cause the conductive core 20 to deform or block the cooling channel 10 during the bending process, making it impossible for the cooling channel 10 to cool down normally.

[0089] In some embodiments of the present application, Figure 1 and Figure 4 As shown, the wire core 100 includes at least two straight segments 21 and at least one curved segment 22, and one curved segment 22 is connected between two adjacent straight segments 21; the axial segment 11 includes at least two straight channels 111 and at least one curved channel 112, the curved channel 112 is arranged in the curved segment 22, the straight channel 111 is arranged in the straight segment 21, and one curved channel 112 is connected between two adjacent straight channels 111.

[0090] The wire core 100 further includes a plurality of straight segments 21 and a plurality of curved segments 22 , wherein a curved segment 22 is connected between two adjacent straight segments 21 ; and the plurality of curved segments 22 are each provided with a curved channel 112 , and the plurality of straight segments 21 are each provided with a straight channel 111 , and the curved channels 112 are connected to adjacent straight channels 111 .

[0091] In this way, the wire core 100 includes at least two straight segments 21 and at least one curved segment 22, so that the wire core 100 can be bent according to the use environment to adapt to different use environments. The axial segment 11 includes at least two straight channels 111 and at least one curved channel 112, so that the straight segments 21 and the curved segments 22 of the wire core 100 can be cooled to avoid the temperature of the wire core 100 from rising, which leads to a decrease in the conductive efficiency of the wire core 100.

[0092] In some embodiments of the present application, the cross-sectional area of ​​the curved channel 112 is equal to the cross-sectional area of ​​the straight channel 111 .

[0093] In this way, the cross-sectional area of ​​the curved channel 112 is made equal to the cross-sectional area of ​​the straight channel 111, so that the cooling medium can flow more smoothly in the cooling channel 10, and the cooling medium can flow evenly in the cooling channel 10, so that the heat can be evenly dissipated at various locations of the wire core 100.

[0094] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the cooling channel 10 also includes a first radial segment 12 and a second radial segment 13 spaced apart along the length direction of the wire core 100. The first radial segment 12 and the second radial segment 13 are both connected to the axial segment 11 and penetrate to the outer surface of the wire core 100 along a second direction, and the second direction is perpendicular to the first direction.

[0095] In this way, the first radial segment 12 and the second radial segment 13 are both connected to the axial segment 11, so that the cooling channel 10 can pass through the first radial segment 12 and the second radial segment 13 to allow the cooling medium to flow in and out. The first radial segment 12 and the second radial segment 13 both penetrate along the second direction to the outer surface of the core 100, so that the inlet and outlet of the cooling channel 10 can be located on the outer peripheral wall of the core 100, avoiding the position of the inlet and outlet of the cooling channel 10 affecting the connection between the core 100 and other external conductive parts.

[0096] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the first radial segment 12 and the second radial segment 13 both penetrate to the outer surface of the core 100 along the third direction, and the third direction has an angle with the first direction.

[0097] In addition, the first radial segment 12 and the second radial segment 13 may also penetrate to the surface of the wire core 100 along different directions, which is not limited in the present application.

[0098] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the wire core 100 further includes a sealing assembly 30 , which surrounds the conductive core 20 and is provided with at least one flow guide hole 31 , which is connected to at least one of the first radial segment 12 and the second radial segment 13 .

[0099] The sealing assembly 30 may be connected to the conductive core 20 by bolts, adhesive bonding, or interference fit, etc., which is not limited in the present application.

[0100] In this way, by setting up the sealing component 30, the cooling medium in the cooling channel 10 can flow with the cold source through the guide hole 31 in the sealing component 30. In this way, the sealing component 30 can seal the connection between the cold source and the cooling channel 10 to prevent the cooling medium from leaking and causing the wire core 100 to fail to work normally.

[0101] In some embodiments of the present application, the conductive core 20 and the sealing assembly 30 are interference fit.

[0102] In this way, by interference fitting the conductive core 20 and the sealing assembly 30, the conductive core 20 and the sealing assembly 30 can be sealed and connected to each other, thereby preventing the cooling medium from leaking from between the sealing assembly 30 and the conductive core 20, causing the wire core 100 to fail to work normally.

[0103] In some embodiments of the present application, Figure 1 and Figure 2As shown, at least one guide hole 31 includes a first guide hole and a second guide hole; the sealing assembly 30 includes a first seal 32 and a second seal arranged at an axial interval along the wire core 100, and the first seal 32 and the second seal both surround the conductive core 20; the first guide hole is arranged in the first seal 32 and is connected to the first radial section 12, and the first guide hole is arranged in the second seal and is connected to the second radial section 13.

[0104] In this way, a first seal 32 is provided at the first radial section 12, and a second seal is provided at the second radial section 13, so that the connections between the first radial section 12 and the second radial section 13 and the cold source can be sealed to avoid leakage of cooling medium, which may cause the core 100 to fail to work normally.

[0105] In some embodiments of the present application, Figure 1 and Figure 2 As shown, at least one flow guide pipe 33 is also included. The flow guide pipe 33 is connected to the flow guide hole 31 and is used for externally connecting a cooling medium.

[0106] In this way, a flow guide pipe 33 is provided to communicate with the flow guide hole 31 , and the flow guide pipe 33 is connected to an external cooling medium. The flow guide pipe 33 can facilitate the communication between the flow guide channel and the external cooling medium.

[0107] In some embodiments of the present application, the flow guide tube 33 and the sealing assembly 30 are an integral structure or a separate structure.

[0108] In this way, the integral structure of the flow guide tube 33 and the sealing assembly 30 can make the sealing between the flow guide tube 33 and the sealing assembly 30 stronger, thereby preventing leakage of the cooling medium.

[0109] In some embodiments of the present application, the flow guide tube 33 and the sealing assembly 30 may be separate structures.

[0110] In this way, the flow guide tube 33 and the sealing assembly 30 are separate structures, which facilitates the installation of the sealing assembly 30 and the flow guide tube 33 .

[0111] In some embodiments of the present application, Figure 1 and Figure 3 As shown, the central axis of the axial section 11 coincides with the central axis of the core 100 .

[0112] In this way, by aligning the central axis of the axial section 11 with the central axis of the wire core 100 , the distances from each part of the wire core 100 to the axial section 11 can be made relative, so that the cooling medium in the axial section 11 can evenly cool the wire core 100 , thereby improving the cooling efficiency of the cooling channel 10 .

[0113] In some embodiments of the present application, the axial section 11 and the wire core 100 are both cylindrical, and the central axis of the axial section 11 coincides with the central axis of the wire core 100 .

[0114] In this way, the axial section 11 and the wire core 100 are both set to be cylindrical, which facilitates the integration of multiple wire cores 100 into a wire harness and facilitates the processing of the cable.

[0115] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the wire core 100 further includes at least one connecting member 40 , which is disposed at the end of the conductive core 20 and is suitable for connecting to an external conductive member.

[0116] The external conductive member may be a wire core 100, a cable or a power source, etc., which is not limited in the present application.

[0117] In this way, the connector 40 is provided at the end of the conductive core 20, which not only facilitates the connection between the core 100 and the external conductive member, but also protects the connection between the core 100 and the external conductive member.

[0118] In some embodiments of the present application, Figure 1 and Figure 3 As shown, the wire core 100 further includes an insulating layer 50 , which is disposed on the outer peripheral wall surface of the conductive core 20 .

[0119] The insulating layer 50 may be a sleeve made of rubber, plastic or other materials, or may be an insulating coating. The insulating coating may be made of epoxy resin, polyurethane or ceramic coating, etc., which is not limited in the present application.

[0120] In this way, by providing the insulating layer 50 on the outer peripheral wall of the conductive core 20 , the core 100 can be insulated from the outside, thereby preventing the current flowing through the core 100 from damaging external objects, thereby improving the safety of the core 100 .

[0121] The present application also provides a method for manufacturing a wire core 100, comprising: obtaining a wire core 100 having a cooling channel 10; filling the cooling channel 10 with molding material; bending the wire core 100 filled with the molding material according to a preset shape; and taking the molding material out of the cooling channel 10.

[0122] Among them, the molding material can be a thermoplastic material such as polyethylene, polypropylene, etc., or a paraffin material, or stearic acid, etc. Stearic acid is a white solid at room temperature. When stearic acid undergoes a saponification reaction with an alkali such as sodium hydroxide, it presents a viscous liquid. At this time, the liquid stearic acid can be poured into the cooling channel 10, and then the sodium stearate solution is evaporated and dried to obtain solid sodium stearate. After the wire core 100 filled with the molding material is bent according to a preset shape, sodium hydroxide, etc. can be added to make the stearic acid and sodium hydroxide undergo a saponification reaction. After presenting a viscous liquid, the stearic acid is poured out.

[0123] In this way, the present application fills the cooling channel 10 with molding material and then bends the wire core 100 filled with molding material according to a preset shape, so that the cooling channel 10 can be supported by the molding material when the wire core 100 is bent, thereby preventing the cooling channel 10 from being squeezed and deformed, causing the cooling channel 10 to be blocked or the cross-sectional area to be reduced, thereby reducing the cooling efficiency of the cooling channel 10, and thus reducing the charging and discharging efficiency of the wire core 100.

[0124] In some embodiments of the present application, obtaining the wire core 100 having the cooling channel 10 may include: forming a conductor sheet by heating and drawing the raw materials through an extrusion process, and rolling the conductor sheet to form the wire core 100 having the cooling channel 10 .

[0125] In some embodiments of the present application, the molding material is a hot-melt material; filling the molding material into the cooling channel 10 includes: heating the hot-melt material to melt the hot-melt material into a liquid state, and filling the liquid hot-melt material into the cooling channel 10; cooling the liquid hot-melt material to solidify the hot-melt material into a solid state.

[0126] In some embodiments of the present application, taking the molding material out of the cooling channel 10 includes: heating the hot melt material again to melt the hot melt material into a liquid state; and pouring the liquid hot melt material out of the cooling channel 10 .

[0127] The melting point of the hot-melt material may be lower than the melting point of the conductive core 20 .

[0128] In this way, by using hot-melt material as the molding material, the hot-melt material can be heated to melt the hot-melt material into a liquid state, and the liquid hot-melt material can be filled into the cooling channel 10, and then the hot-melt material can be heated again to melt the hot-melt material into a liquid state; the liquid hot-melt material can be poured out from the cooling channel 10 to facilitate the filling and pouring of the molding material.

[0129] In some embodiments of the present application, the method for manufacturing the wire core 100 further includes: after pouring the liquid hot-melt material out of the cooling channel 10, processing a radial section of the cooling channel 10 at the end of the wire core 100, then sealing the end of the wire core 100, and finally setting an insulating layer 50 on the outer peripheral surface of the wire core 100.

[0130] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A wire core, characterized in that: At least part of the wire core is provided with a cooling channel (10), and the cooling channel (10) is used for the circulation of a cooling medium.

2. The wire core according to claim 1, characterized in that: The cooling channel (10) comprises an axial section (11) extending along the length direction of the wire core.

3. The wire core according to claim 2, characterized in that: The wire core comprises a conductive core (20), and the conductive core (20) is provided with the axial section (11).

4. The wire core according to claim 3, characterized in that: Along a first direction, a ratio of a maximum dimension R1 of the axial segment (11) to a maximum dimension R2 of the conductive core (20) is less than or equal to 0.1, and the first direction is perpendicular to a length direction of the core.

5. The wire core according to claim 3, characterized in that: The ratio of the maximum dimension R1 of the axial section (11) to the maximum dimension R2 of the conductive core (20) is greater than or equal to 0.

05.

6. The wire core according to claim 2, characterized in that: The wire core comprises at least two straight segments (21) and at least one curved segment (22), wherein one curved segment (22) is connected between two adjacent straight segments (21); The axial section (11) comprises at least two straight channels (111) and at least one curved channel (112); the curved channel (112) is arranged in the curved section (22); the straight channel (111) is arranged in the straight section (21); and one curved channel (112) is connected to two adjacent straight channels (111).

7. The wire core according to claim 6, characterized in that: The cross-sectional area of ​​the curved channel (112) is equal to the cross-sectional area of ​​the straight channel (111).

8. The wire core according to claim 4, characterized in that: The cooling channel (10) further comprises a first radial section (12) and a second radial section (13) which are arranged at intervals along the length direction of the wire core, wherein the first radial section (12) and the second radial section (13) are both connected to the axial section (11) and penetrate to the outer surface of the wire core along a second direction, wherein the second direction is perpendicular to the first direction.

9. The wire core according to claim 8, characterized in that: The core also includes: A sealing component (30), the sealing component (30) surrounds the conductive core (20), and the sealing component (30) is provided with at least one flow guide hole (31), wherein the flow guide hole (31) is connected to at least one of the first radial segment (12) and the second radial segment (13).

10. The wire core according to claim 9, characterized in that: The conductive core (20) and the sealing component (30) are interference-fitted.

11. The wire core according to claim 9, characterized in that: At least one of the guide holes (31) comprises a first guide hole and a second guide hole; The sealing assembly (30) comprises a first sealing member (32) and a second sealing member which are arranged at intervals along the axial direction of the wire core, and the first sealing member (32) and the second sealing member both surround the conductive core (20); The first flow guide hole is provided in the first sealing member (32) and is communicated with the first radial section (12); the first flow guide hole is provided in the second sealing member and is communicated with the second radial section (13).

12. The wire core according to claim 9, characterized in that: It also includes at least one flow guide pipe (33), wherein the flow guide pipe (33) is in communication with the flow guide hole (31) and is used for connecting an external cooling medium.

13. The wire core according to claim 12, characterized in that: The flow guide tube (33) and the sealing assembly (30) are an integral structure or a separate structure.

14. The wire core according to claim 2, characterized in that: The central axis of the axial section (11) coincides with the central axis of the wire core.

15. The wire core according to claim 3, characterized in that: The core also includes: At least one connecting member (40) is provided at the end of the conductive core (20) and is suitable for connecting to an external conductive member.

16. The wire core according to claim 3, characterized in that: The core also includes: An insulating layer (50) is provided on the outer peripheral wall surface of the conductive core (20).

17. A cable, characterized in that: Comprising at least one wire core (100) according to any one of claims 1 to 16.

18. A charging device, characterized in that: The wire core (100) comprises any one of claims 1 to 16; or the cable comprises the cable according to claim 17.

19. An electrical equipment, characterized in that: It comprises the wire core (100) according to any one of claims 1 to 16; or comprises the cable according to claim 17; or comprises the charging device according to claim 18.

20. A method for manufacturing a wire core (100), characterized in that: include: Obtaining a wire core (100) having a cooling channel (10); Filling the cooling channel (10) with molding material; Bending the wire core (100) filled with the molding material according to a preset shape; The molding material is taken out from the cooling channel (10).

21. The method for manufacturing a wire core (100) according to claim 20, characterized in that: The molding material is a hot-melt material; The step of filling the cooling channel (10) with molding material comprises: heating the hot melt material to melt the hot melt material into a liquid state, and filling the liquid hot melt material into the cooling channel (10); The liquid hot melt material is cooled to solidify the hot melt material into a solid state.

22. The method for manufacturing a wire core (100) according to claim 21, characterized in that: The step of removing the molding material from the cooling channel (10) comprises: heating the hot melt material again to melt the hot melt material into a liquid state; The liquid hot melt material is poured out from the cooling channel (10).

Images