Current-carrying line, power line, electric connection device, and electric device

Abstract

A current-carrying line, a power line, an electric connection device, and an electric device, wherein the current-carrying line (600) comprises: a first current-carrying conductor (610); a first insulating layer (620) wrapping the first current-carrying conductor (610); a first shielding conductor structure (630) for detecting a leakage current from the first current-carrying conductor (610), the first shielding conductor structure (630) comprising a first shielding layer (631) wrapping the first insulating layer (620) and a first conductor (632) tightly attached to the first shielding layer (631), and the first conductor (632) being used for transmitting an electric signal on the first shielding conductor structure (630) to the outside of the current-carrying line (600); and a second insulating layer (640) wrapping the outside of the first shielding conductor structure (630).

Description

Current-carrying wires, power cords, electrical connection equipment and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application number 202311621145.9 filed on November 29, 2023, entitled “Current-carrying wire, power cord, electrical connection device and electrical equipment”, and application number 202323248090.X filed on November 29, 2023, entitled “Current-carrying wire, power cord, electrical connection device and electrical equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of power lines, and in particular to a current-carrying line, a power line, an electrical connection device, and an electrical device. Background Art

[0004] A leakage current detection circuit breaker is a power connection device for electrical appliances. It detects leakage current in the power cord set via a leakage current detection line and, when a certain leakage current is detected, disconnects the appliance from the power supply, ensuring safe use. In recent years, leakage current detection circuit breakers have not only required leakage current detection via the leakage current detection line, but have also introduced higher safety detection requirements, such as the need to detect whether the leakage current detection line is open.

[0005] Therefore, for power cords used with leakage current detection circuit breakers, the internal leakage current detection line must also meet safety detection requirements such as leakage detection and open circuit detection. However, the current power cord structure cannot fully meet the aforementioned safety detection requirements, resulting in insufficient safety during use.

[0006] Summary of the Invention

[0007] The purpose of the present application is to at least partially solve one of the technical problems existing in the prior art and to provide a current-carrying wire, a power line, an electrical connection device and an electrical device.

[0008] In a first aspect, an embodiment of the present application provides a current-carrying line, comprising a first current-carrying conductor, a first insulating layer, a first shielding conductor structure, and a second insulating layer, wherein:

[0009] The first insulating layer wraps the first current-carrying conductor;

[0010] The first shielding conductor structure is used to detect leakage current from the first current-carrying conductor, the first shielding conductor structure includes a first shielding layer wrapping the first insulating layer and a first conductor closely attached to the first shielding layer, the first conductor is used to transmit an electrical signal on the first shielding conductor structure to the outside of the current-carrying line;

[0011] The second insulating layer is wrapped around the first shielding conductor structure.

[0012] According to some embodiments of the present application, the current-carrying line provided, the first shielding conductor structure includes a first end close to the input end of the first current-carrying conductor, a second end close to the output end of the first current-carrying conductor, and a third end located between the first end and the second end, the current-carrying line also includes a first metal conductor led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

[0013] According to the current-carrying line provided in some embodiments of the present application, an insulating sheath is provided on the outside of the first metal conductor.

[0014] According to the current-carrying wire provided in some embodiments of the present application, the first shielding layer adopts a single-sided conductive flexible material; the first shielding layer wraps the first insulating layer in a spiral winding manner, or wraps the first insulating layer parallel to the axis direction of the first current-carrying conductor.

[0015] According to the current-carrying wire provided in some embodiments of the present application, the first shielding layer wraps the first insulating layer in a manner of weaving multiple conductors into a mesh.

[0016] According to the current-carrying wire provided in some embodiments of the present application, the first shielding layer includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple conductors.

[0017] According to the current-carrying line provided in some embodiments of the present application, the first conductor is located between the first insulating layer and the first shielding layer, or between the first shielding layer and the second insulating layer.

[0018] The first aspect of the present application further provides a current-carrying line, comprising a first current-carrying conductor, a first insulating layer, a first shielding conductor structure, a second insulating layer, and a first metal conductor, wherein:

[0019] The first insulating layer wraps the first current-carrying conductor;

[0020] The first shielding conductor structure is used to detect leakage current from the first current-carrying conductor, the first shielding conductor structure comprising a first shielding layer wrapping the first insulating layer; the first shielding conductor structure comprises a first end proximate to an input end of the first current-carrying conductor, a second end proximate to an output end of the first current-carrying conductor, and a third end located between the first end and the second end;

[0021] The second insulating layer is wrapped around the outside of the first shielding conductor structure;

[0022] The first metal conductor is led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

[0023] The first aspect of the present application further provides a current-carrying line, comprising a first current-carrying conductor, a first insulating layer, a first shielding conductor structure, and a second insulating layer, wherein:

[0024] The first insulating layer wraps the first current-carrying conductor;

[0025] The first shielding conductor structure is used to detect leakage current from the first current-carrying conductor, the first shielding conductor structure includes a first shielding layer wrapping the first insulating layer, a second shielding layer wrapping the first shielding layer, and a first conductor located between the first shielding layer and the second shielding layer, the first conductor being used to transmit an electrical signal on the first shielding conductor structure to the outside of the current-carrying line;

[0026] The second insulating layer is wrapped around the first shielding conductor structure.

[0027] According to some embodiments of the present application, the current-carrying line provided, the first shielding conductor structure includes a first end close to the input end of the first current-carrying conductor, a second end close to the output end of the first current-carrying conductor, and a third end located between the first end and the second end, the current-carrying line also includes a first metal conductor led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

[0028] According to the current-carrying line provided in some embodiments of the present application, an insulating sheath is provided on the outside of the first metal conductor.

[0029] According to the current-carrying wire provided in some embodiments of the present application, the first shielding layer adopts a single-sided conductive flexible material, the insulating surface of the first shielding layer faces inward and contacts the outer surface of the first insulating layer, and the conductive surface of the first shielding layer faces outward and contacts the first conductor and the second shielding layer; the second shielding layer wraps the first shielding layer in a manner of weaving multiple conductors into a mesh.

[0030] According to the current-carrying wire provided in some embodiments of the present application, the first shielding layer is formed by weaving multiple conductors into a mesh to wrap the first insulating layer; the second shielding layer is formed by using a single-sided conductive flexible material, the conductive surface of the second shielding layer faces inward and contacts the first conductor and the first shielding layer, and the insulating surface of the second shielding layer faces outward and contacts the inner surface of the second insulating layer.

[0031] According to the current-carrying wire provided in some embodiments of the present application, the first conductor is a single-strand wire or a multi-strand wire; the first conductor is wrapped around the outside of the first insulating layer in a spiral winding manner, or is arranged outside the first insulating layer in parallel along the axial direction of the first current-carrying conductor.

[0032] According to the current-carrying wire provided in some embodiments of the present application, the second insulating layer is made of a flexible insulating film material and is wrapped around the outside of the first shielding conductor structure or wrapped parallel to the first shielding conductor structure along the axis direction of the first current-carrying conductor;

[0033] or,

[0034] The second insulating layer is an injection-molded insulating outer sheath.

[0035] In a second aspect, an embodiment of the present application provides a power line, comprising a first current-carrying line and a second current-carrying line, wherein:

[0036] The first current-carrying line includes a first current-carrying conductor, a first insulating layer wrapping the first current-carrying conductor, and a first shielding conductor structure, wherein the first shielding conductor structure is used to detect leakage current from the first current-carrying conductor, and the first shielding conductor structure includes a first shielding layer wrapping the first insulating layer; the first shielding conductor structure includes a first end proximate to an input end of the power line, a second end proximate to an output end of the power line, and a third end located between the first end and the second end;

[0037] The second current-carrying line includes a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shielding conductor structure, the second shielding conductor structure is used to detect leakage current from the second current-carrying conductor, and the second shielding conductor structure includes a third shielding layer wrapping the third insulating layer; the second shielding conductor structure includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end;

[0038] a fifth insulating layer, wrapping the first current-carrying wire and the second current-carrying wire;

[0039] Wherein: the first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other;

[0040] The first current-carrying line and the second current-carrying line also meet any one of the following four conditions:

[0041] Case 1: the first current-carrying line further includes a first metal conductor extending from the third end, and the first metal conductor is connected to the sixth end;

[0042] Case 2: the second current-carrying line further includes a second metal conductor extending from the sixth end, and the second metal conductor is connected to the third end;

[0043] Case 3: The first current-carrying line further includes a first metal conductor extending from the third end, the second current-carrying line further includes a second metal conductor extending from the sixth end, and the first metal conductor is connected to the second metal conductor;

[0044] Case 4: The power line is further provided with a third metal conductor, and two ends of the third metal conductor are respectively connected to the third end and the sixth end.

[0045] It can also be understood that the first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other, which can avoid mutual interference between the leakage detection of the first current-carrying line and the leakage detection of the second current-carrying line.

[0046] A second aspect of the present application further provides a power line, comprising a first current-carrying line, a second current-carrying line, and a fifth insulating layer, wherein:

[0047] The first current-carrying line includes a first current-carrying conductor, a first insulating layer wrapping the first current-carrying conductor, and a first shielding conductor structure, wherein the first shielding conductor structure is used to detect leakage current from the first current-carrying conductor, the first shielding conductor structure includes a first shielding layer wrapping the first insulating layer and a first conductor closely attached to the first shielding layer, and the first conductor is used to transmit an electrical signal on the first shielding conductor structure to the outside of the current-carrying line;

[0048] The second current-carrying line includes a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shielding conductor structure, the second shielding conductor structure is used to detect leakage current from the second current-carrying conductor, the second shielding conductor structure includes a third shielding layer wrapping the third insulating layer and a second conductor closely attached to the third shielding layer, the second conductor is used to transmit an electrical signal on the second shielding conductor structure to the outside of the current-carrying line;

[0049] The fifth insulating layer wraps the first current-carrying wire and the second current-carrying wire;

[0050] The first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other.

[0051] According to the power cord provided in some embodiments of the present application, the first current-carrying line further includes a second insulating layer wrapped around the outside of the first shielding conductor structure, and / or the second current-carrying line further includes a fourth insulating layer wrapped around the outside of the second shielding conductor structure.

[0052] According to the power line provided in some embodiments of the present application, the interior of the fifth insulating layer except for the first current-carrying line and the second current-carrying line is filled with insulating material.

[0053] According to some embodiments of the present application, the power cord provided by the first shielding conductor structure includes a first end close to the input end of the power cord, a second end close to the output end of the power cord, and a third end located between the first end and the second end; the second shielding conductor structure includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end;

[0054] The first current-carrying line and the second current-carrying line also meet any one of the following four conditions:

[0055] Case 1: the first current-carrying line further includes a first metal conductor extending from the third end, and the first metal conductor is connected to the sixth end;

[0056] Case 2: the second current-carrying line further includes a second metal conductor extending from the sixth end, and the second metal conductor is connected to the third end;

[0057] Case 3: The first current-carrying line further includes a first metal conductor extending from the third end, the second current-carrying line further includes a second metal conductor extending from the sixth end, and the first metal conductor is connected to the second metal conductor;

[0058] Case 4: The power line is further provided with a third metal conductor, and two ends of the third metal conductor are respectively connected to the third end and the sixth end.

[0059] According to the power cord provided in some embodiments of the present application, when the second insulating layer exists, the second insulating layer is provided with a first opening for the first metal conductor to pass through; when the fourth insulating layer exists, the fourth insulating layer is provided with a second opening for the second metal conductor to pass through.

[0060] According to the power cord provided in some embodiments of the present application, the outside of the first metal conductor and the outside of the second metal conductor are both provided with an insulating sheath.

[0061] According to the power cord provided in some embodiments of the present application, in the first case, the first metal conductor is welded to the sixth end; in the second case, the second metal conductor is welded to the third end; in the third case, the first metal conductor and the second metal conductor are welded at a position between the third end and the sixth end to achieve electrical connection; in the fourth case, one end of the third metal conductor is welded to the third end, and the other end is welded to the sixth end.

[0062] According to the power cord provided in some embodiments of the present application, the first metal conductor and the second metal conductor extend to a position close to the input end or to a position close to the output end to achieve electrical connection.

[0063] According to some embodiments of the present application, the power cord is provided in which the first conductor and the second conductor are multi-strand wires, the first metal conductor is obtained by leading out of several strands of the first conductor from the third end, and the second metal conductor is obtained by leading out of several strands of the second conductor from the sixth end.

[0064] According to the power cord provided in some embodiments of the present application, the first shielding layer is formed by weaving multiple conductors into a mesh to wrap the first insulating layer, the third shielding layer is formed by weaving multiple conductors into a mesh to wrap the third insulating layer, the first metal conductor is obtained by leading out from the third end by several conductors in the first shielding layer, and the second metal conductor is obtained by leading out from the sixth end by several conductors in the third shielding layer.

[0065] According to the power cord provided in some embodiments of the present application, the third shielding layer adopts a single-sided conductive flexible material; the third shielding layer wraps the third insulating layer in a spiral winding manner, or wraps the third insulating layer parallel to the axis direction of the second current-carrying conductor.

[0066] According to the power cord provided in some embodiments of the present application, the third shielding layer wraps the third insulating layer in a manner of weaving multiple conductors into a mesh.

[0067] According to the power cord provided by some embodiments of the present application, the third shielding layer includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple conductors.

[0068] According to the power cord provided by some embodiments of the present application, the second conductor is located between the third insulating layer and the third shielding layer, or between the third shielding layer and the fourth insulating layer when the fourth insulating layer exists.

[0069] According to the power cord provided in some embodiments of the present application, the second shielding conductor structure further includes a fourth shielding layer wrapping the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

[0070] According to some embodiments of the present application, the third shielding layer adopts a single-sided conductive flexible material, the insulating surface of the third shielding layer faces inward and contacts the outer surface of the third insulating layer, and the conductive surface of the third shielding layer faces outward and contacts the second conductor and the fourth shielding layer; the fourth shielding layer wraps the third shielding layer in a manner of weaving multiple conductors into a mesh.

[0071] According to the power cord provided in some embodiments of the present application, the third shielding layer wraps the third insulating layer in a manner of weaving multiple conductors into a mesh; the fourth shielding layer uses a single-sided conductive flexible material, and the conductive surface of the fourth shielding layer faces inward and contacts the second conductor and the third shielding layer; when the fourth insulating layer exists, the insulating surface of the fourth shielding layer faces outward and contacts the inner surface of the fourth insulating layer.

[0072] According to the power cord provided in some embodiments of the present application, the second conductor is wrapped around the outside of the third insulating layer in a spiral winding manner, or is arranged outside the third insulating layer in parallel along the axis direction of the second current-carrying conductor.

[0073] According to the power cord provided in some embodiments of the present application, the fourth insulating layer is made of a flexible insulating film material and is wrapped around the outside of the second shielding conductor structure or wrapped around the second shielding conductor structure in parallel along the axis direction of the second current-carrying conductor;

[0074] or,

[0075] The fourth insulating layer is an injection-molded insulating outer skin.

[0076] According to some embodiments of the present application, the power cord further includes a first return line and a second return line located inside the fifth insulating layer; an end of the first return line close to the output end is connected to the second end; and an end of the second return line close to the output end is connected to the fifth end.

[0077] According to the power cord provided in some embodiments of the present application, the first shielding conductor structure also includes a second shielding layer wrapping the first shielding layer and the first conductor, and the first conductor is located between the first shielding layer and the second shielding layer; the second shielding conductor structure also includes a fourth shielding layer wrapping the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

[0078] According to the power cord provided in some embodiments of the present application, the first shielding layer adopts a single-sided conductive flexible material, the insulating surface of the first shielding layer faces inward and contacts the outer surface of the first insulating layer, and the conductive surface of the first shielding layer faces outward and contacts the first conductor and the second shielding layer; the second shielding layer adopts a multi-strand conductor woven into a mesh to wrap the first shielding layer; the third shielding layer adopts a single-sided conductive flexible material, the insulating surface of the third shielding layer faces inward and contacts the outer surface of the third insulating layer, and the conductive surface of the third shielding layer faces outward and contacts the second conductor and the fourth shielding layer; the fourth shielding layer adopts a multi-strand conductor woven into a mesh to wrap the third shielding layer.

[0079] According to the power cord provided in some embodiments of the present application, the first return line is located outside the first current-carrying line, or between the second insulating layer and the first shielding conductor structure, or inside the first shielding conductor structure, or between the first shielding conductor structure and the first insulating layer.

[0080] According to the power cord provided in some embodiments of the present application, the second return line is located outside the second current-carrying line, or between the fourth insulating layer and the second shielding conductor structure, or inside the second shielding conductor structure, or between the second shielding conductor structure and the third insulating layer.

[0081] According to the power cord provided in some embodiments of the present application, an end of the first shielding layer close to the output end, an end of the first conductor close to the output end, or an end of the second shielding layer close to the output end serves as the second end and is connected to an end of the first return line close to the output end.

[0082] According to the power cord provided in some embodiments of the present application, an end of the third shielding layer close to the output end, an end of the second conductor close to the output end, or an end of the fourth shielding layer close to the output end serves as the fifth end and is connected to an end of the second return line close to the output end.

[0083] According to the power cord provided in some embodiments of the present application, the first return line and the second return line are wires with insulating sheaths.

[0084] In a third aspect, an embodiment of the present application provides an electrical connection device, comprising a shell, a detection and protection device arranged inside the shell, and a power cord as described in the embodiment of the second aspect above, the first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell, and the third end and the sixth end are located at the connection between the power cord and the shell.

[0085] The third aspect embodiment of the present application also provides an electrical connection device, including a shell, a detection and protection device arranged inside the shell, and a power cord as described in the second aspect embodiment above, the first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell, the output end of the power cord is used to connect to a load device, and the third end and the sixth end are located at the connection between the power cord and the load device.

[0086] The third aspect embodiment of the present application also provides an electrical connection device, including a shell, a detection and protection device arranged inside the shell, and a power cord as described in the second aspect embodiment above, the first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell, the output end of the power cord is used to connect to a load device, and the third end and the sixth end are located between the shell and the load device.

[0087] According to the electrical connection device provided in some embodiments of the present application, a line clip for fixing the power line is provided at the connection between the power line and the shell.

[0088] According to the electrical connection device provided in some embodiments of the present application, the detection and protection device includes:

[0089] a switch module, configured to control the power connection between the input end and the output end of the power line;

[0090] a driving module, respectively connected to the first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, the fifth end, and the switch module, and configured to control the switch module to disconnect the power connection when a leakage current is detected in the first shielding conductor structure or an open circuit occurs, and / or when a leakage current is detected in the second shielding conductor structure or an open circuit occurs.

[0091] In a fourth aspect, an embodiment of the present application provides an electrical device, comprising a load device and the electrical connection device as described in the embodiment of the third aspect above, wherein the output end of the power line is connected to the load device.

[0092] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purposes and other advantages of the present application can be achieved and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] The accompanying drawings are used to provide a further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0094] The present application is further described below with reference to the accompanying drawings and embodiments;

[0095] FIG1 is a schematic diagram of the cross-sectional structure of a current-carrying wire provided in an embodiment of the present application;

[0096] FIG2 is a schematic side view of the structure of a current-carrying line provided in an embodiment of the present application;

[0097] FIG3 is a schematic side view of the structure of a current-carrying wire provided in an embodiment of the present application;

[0098] FIG4 is a schematic diagram of the cross-sectional structure of a current-carrying wire provided in an embodiment of the present application;

[0099] FIG5 is a schematic diagram of the cross-sectional structure of a current-carrying wire provided in an embodiment of the present application;

[0100] FIG6 is a schematic side view of the structure of a current-carrying line provided in an embodiment of the present application;

[0101] FIG7 is a schematic diagram of a cross-sectional structure of a power cord provided in an embodiment of the present application;

[0102] FIG8 is a schematic side view of the structure of a power cord provided in an embodiment of the present application;

[0103] FIG9 a is a schematic side view of the structure of a power cord provided in an embodiment of the present application;

[0104] FIG9b is a schematic side view of the structure of a power cord provided in an embodiment of the present application;

[0105] FIG9c is a schematic side view of the structure of a power cord provided in an embodiment of the present application;

[0106] FIG9d is a schematic diagram of the side structure of the power cord provided in an embodiment of the present application

[0107] FIG10 is a schematic side view of the structure of a power cord provided in an embodiment of the present application;

[0108] FIG11 is a schematic diagram of the cross-sectional structure of the power line provided in an embodiment of the present application

[0109] FIG12 is a schematic side view of the structure of a power cord provided in an embodiment of the present application;

[0110] FIG13 is a schematic structural diagram of an electrical connection device provided in an embodiment of the present application; and

[0111] FIG14 is a schematic diagram showing the circuit connection between the detection and protection device of the electrical connection device and the power line according to an embodiment of the present application. DETAILED DESCRIPTION

[0112] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0113] In the description of the embodiments of this application, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, and "above," "below," and "within" are understood to include the number itself. "At least one" means one or more, "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. If "first," "second," or the like is used in the description, it is only for the purpose of distinguishing technical features and is not to be understood as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0114] It should be noted that the terms "dispose," "install," and "connect" in the embodiments of this application should be interpreted broadly. Those skilled in the art can reasonably determine the specific meanings of these terms in the embodiments of this application based on the specific content of the technical solution. For example, the term "connect" can refer to mechanical connection, electrical connection, or communication; it can refer to direct connection or indirect connection through an intermediary.

[0115] It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0116] A leakage current detection circuit breaker is a power connection device for electrical appliances, which can detect the leakage current of a power cord group through a leakage current detection line, and cut off the power connection of the electrical appliance when a certain leakage current is detected, to ensure safe use. In recent years, in addition to the need to detect the leakage current of the power cord through the leakage current detection line, leakage current detection circuit breakers have also put forward higher safety detection requirements, such as the need to detect whether the leakage current detection line has an open circuit. Therefore, for the power cord used in conjunction with the leakage current detection circuit breaker, the leakage current detection line inside it also needs to meet the requirements of safety detection such as leakage detection and open circuit detection. However, the current power cord structure cannot fully meet the aforementioned safety detection requirements, resulting in insufficient safety during use. Based on this, the embodiments of the present application provide a current-carrying line, a power cord, an electrical connection device and an electrical device that can improve power supply safety.

[0117] The embodiments of the present application are further described below with reference to the accompanying drawings.

[0118] 1 and 2 , a first embodiment of the present application provides a current-carrying line 600 , including a first current-carrying conductor 610 , a first insulating layer 620 , a first shielding conductor structure 630 , and a second insulating layer 640 , wherein:

[0119] The first insulating layer 620 wraps the first current-carrying conductor 610;

[0120] The first shielding conductor structure 630 is used to detect leakage current from the first current-carrying conductor 610. The first shielding conductor structure 630 includes a first shielding layer 631 that wraps the first insulating layer 620 and a first conductor 632 that is closely attached to the first shielding layer 631. The first conductor 632 is used to transmit the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600.

[0121] The second insulating layer 640 is wrapped around the first shielding conductor structure 630 .

[0122] In the current-carrying line 600 provided in the embodiment, the first current-carrying conductor 610 is used to provide working current for the load device; the first insulating layer 620 wraps the first current-carrying conductor 610 to prevent leakage; a first shielding conductor structure 630 is set outside the first insulating layer 620, which can effectively detect leakage that may occur when the first insulating layer 620 is damaged, and transmit a signal to the outside of the current-carrying line 600 to cut off the power supply, avoid accidents of electric shock to personnel, and improve safety; wherein, the first shielding conductor structure 630 includes a first shielding layer 631 and a first conductor 632, and the first shielding layer 631 wraps the first current-carrying conductor 610 to fully detect the leakage on the entire first current-carrying conductor 610. In order to prevent leakage current, the first conductor 632 tightly attached to the first shielding layer 631 plays the role of conveniently and reliably transmitting the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600. In addition, the second insulating layer 640 is used to wrap the first shielding conductor structure 630, so that the contact between the first shielding layer 631 and the first conductor 632 is closer, so that the electrical signal on the first shielding layer 631 can be more reliably transmitted to the first conductor 632; therefore, the first shielding conductor structure 630 composed of the first shielding layer 631 and the first conductor 632 has the advantages of comprehensive detection and convenient and reliable electrical signal transmission, thereby improving the power supply safety of the current-carrying line 600.

[0123] 2 , in the current-carrying line 600 provided in some embodiments of the present application, the first shielding conductor structure 630 includes a first end close to the input end of the first current-carrying conductor 610, a second end close to the output end of the first current-carrying conductor 610, and a third end located between the first end and the second end. The current-carrying line 600 also includes a first metal conductor 650 leading out from the third end, and the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through.

[0124] It can be understood that, taking the placement direction of the current-carrying line 600 shown in Figure 2 as an example, if the left end of the current-carrying line 600 is used to connect to a plug that provides power, and the right end is used to connect to a load device, then the first end of the first shielding conductor structure 630 is located on the left side as shown in Figure 2, the second end of the first shielding conductor structure 630 is located on the right side as shown in Figure 2, and the third end is located between the first end and the second end, for example, located inside the first opening 641 shown in Figure 2.

[0125] In this embodiment, the first metal conductor 650 led out from the third end can transmit the electrical signal on the first shielding conductor structure 630 from the third end to the outside of the current-carrying line 600. In this way, for the first shielding conductor structure 630, it can transmit electrical signals from the first end on the left to the outside of the current-carrying line 600, and from the second end on the right to the outside of the current-carrying line 600, and can also transmit electrical signals from the third end in the middle to the outside of the current-carrying line 600, so that leakage detection of the current-carrying line 600 can be realized at different positions; moreover, the first shielding conductor structure 630 can also be divided into two segments, the first segment is located between the first end on the left and the third end in the middle, and the second segment is located between the third end in the middle and the second end on the right, and then the two segments can be separately detected for disconnection, thereby meeting various safety detection requirements for the current-carrying line 600.

[0126] In addition, the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through, that is, the second insulating layer 640 is broken at the first opening 641, and the integrity of the second insulating layer 640 is guaranteed as much as possible at other positions to avoid reducing the protection effect of the second insulating layer 640 on the internal first current-carrying conductor 610 and the first shielding conductor structure 630.

[0127] 3 , in a current-carrying wire 600 provided in some embodiments of the present application, an insulating sheath 651 is disposed on the exterior of a first metal conductor 650. It will be appreciated that the embodiment shown in FIG3 adds an insulating sheath 651 disposed on the exterior of the first metal conductor 650 to the embodiment shown in FIG2 , and the remaining structure is the same as the current-carrying wire 600 shown in FIG2 .

[0128] In this embodiment, the insulating outer layer 651 is added to protect the first metal conductor 650, which can prevent the electrical signal transmitted on the first metal conductor 650 from being interfered with by other factors and prevent the first metal conductor 650 from being easily broken by external forces.

[0129] In the current-carrying line 600 provided in some embodiments of the present application, the first conductor 632 is located between the first insulating layer 620 and the first shielding layer 631, as shown in FIG4 ; or the first conductor 632 is located between the first shielding layer 631 and the second insulating layer 640, as shown in FIG1 .

[0130] It is understandable that in this embodiment, the relative positions of the first shielding layer 631 and the first conductor 632 constituting the first shielding conductor structure 630 can be interchanged. It is only necessary to ensure that the two are tightly attached to each other and have a reliable electrical connection relationship to ensure the stability of electrical signal transmission.

[0131] In the current-carrying line 600 provided in some embodiments of the present application, the first shielding layer 631 is made of a single-sided conductive flexible material; the first shielding layer 631 is wrapped around the first insulating layer 620 in a spiral winding manner, or is wrapped around the first insulating layer 620 parallel to the axial direction of the first current-carrying conductor 610.

[0132] The two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface, respectively. Therefore, in order to ensure a reliable electrical connection between the first shielding layer 631 and the first conductor 632, the conductive surface of the first shielding layer 631 needs to be oriented toward the first conductor 632. For example, in the embodiment shown in FIG1 , the first conductor 632 is located between the first shielding layer 631 and the second insulating layer 640. At this time, the insulating surface of the first shielding layer 631 faces inward and wraps around the first insulating layer 620, and the conductive surface of the first shielding layer 631 faces outward and contacts the first conductor 632. In the embodiment shown in FIG4 , the first conductor 632 is located between the first insulating layer 620 and the first shielding layer 631. At this time, the conductive surface of the first shielding layer 631 faces inward and wraps around the first insulating layer 620 and the first conductor 632, so that the conductive surface of the first shielding layer 631 is in good contact with the first conductor 632.

[0133] In the current-carrying wire 600 provided in some embodiments of the present application, the first shielding layer 631 wraps the first insulating layer 620 in a manner of weaving multiple conductors into a mesh.

[0134] Compared with the above embodiment that uses a single-sided conductive flexible material as the first shielding layer 631, this embodiment provides a first shielding layer 631 made of different materials, and uses multiple strands of conductors woven into a mesh as the first shielding layer 631. Several strands of conductors can be pulled out from the first shielding layer 631 and passed through the first opening 641 to serve as the first metal conductor 650. That is, when the first metal conductor 650 needs to be led out from the third end, it is only necessary to break a first opening 641 on the second insulating layer 640, and then pull out several strands of conductors from the first shielding layer 631 woven into a mesh with multiple strands of conductors.

[0135] It should be noted that the first conductor 632 may be a single-strand wire or a multi-strand wire. Therefore, the first metal conductor 650 may also be a plurality of strands of wire in the first conductor 632 drawn out from the first opening 641 .

[0136] It will be appreciated that, in one embodiment, the first conductor 632 is a tin wire. This is because the current-carrying wire 600 is typically connected to a PCB. Therefore, the electrical signal transmitted from the first conductor 632 to the outside of the current-carrying wire 600 often reaches the PCB. When the first conductor 632 is a tin wire, the first conductor 632 can be directly soldered to the soldering pins of the PCB, simplifying the steps for electrically connecting the current-carrying wire 600 to the PCB and improving production efficiency during processing.

[0137] In addition, the first conductor 632 can be wrapped around the outside of the first insulating layer 620 in a spiral winding manner. Specifically, in the embodiment shown in Figure 1, the first shielding layer 631 first wraps the first insulating layer 620, and the first conductor 632 is then wrapped around the outside of the first shielding layer 631. In the embodiment shown in Figure 4, the first conductor 632 is first wrapped around the outside of the first insulating layer 620, and the first shielding layer 631 is then wrapped around the outside of the first conductor 632. The first conductor 632 can also be arranged outside the first insulating layer 620 in parallel along the axial direction of the first current-carrying conductor 610. Specifically, in the embodiment shown in Figure 1, the first conductor 632 is arranged in parallel between the first shielding layer 631 and the second insulating layer 640. In the embodiment shown in Figure 4, the first conductor 632 is arranged in parallel between the first insulating layer 620 and the first shielding layer 631.

[0138] It can be understood that the first metal conductor 650 can also be an additional conductor or wire. After the first opening 641 is set on the second insulating layer 640 of the current-carrying line 600, the additional conductor or wire can be connected to the first shielding conductor structure 630 at the first opening 641. The connection method of the additional conductor or wire and the first shielding conductor structure 630 can be welding, or the additional conductor or wire can be directly twisted together with the conductor of the first shielding layer 631 or several strands of the first conductor 632.

[0139] In the current-carrying wire 600 provided in some embodiments of the present application, the first shielding layer 631 includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple conductors.

[0140] In this embodiment, the first shielding layer 631 includes both the aforementioned single-sided conductive flexible material and a shielding layer woven into a mesh with multiple conductors, which can improve the reliability of the first shielding layer 631. The first shielding layer 631 can more reliably detect the leakage current of the first current-carrying conductor 610 and is not prone to rupture and disconnection.

[0141] In addition, in each of the embodiments shown in Figures 1 to 4, the second insulating layer 640 can be made of a flexible insulating film material and wrapped around the outside of the first shielding conductor structure 630, or wrapped around the first shielding conductor structure 630 in a direction parallel to the axis of the first current-carrying conductor 610; the second insulating layer 640 can also be an injection-molded insulating sheath wrapped around the outside of the first shielding conductor structure 630. It is understood that the second insulating layer 640 can also be made of a flexible insulating film material and wrapped around the outside of the first shielding conductor structure 630, or wrapped around the first shielding conductor structure 630 in a direction parallel to the axis of the first current-carrying conductor 610, and then wrapped around the flexible insulating film material with an injection-molded insulating sheath; such an arrangement can further enhance the protective effect of the second insulating layer 640 on the first current-carrying conductor 610 and the first shielding conductor structure 630 within the current-carrying line 600.

[0142] In addition, another embodiment of the first aspect of the present application further provides a current-carrying line 600, comprising a first current-carrying conductor 610, a first insulating layer 620, a first shielding conductor structure 630, a second insulating layer 640, and a first metal conductor 650, wherein:

[0143] The first insulating layer 620 wraps the first current-carrying conductor 610;

[0144] The first shielding conductor structure 630 is used to detect leakage current from the first current-carrying conductor 610. The first shielding conductor structure 630 includes a first shielding layer 631 that wraps around the first insulating layer 620. The first shielding conductor structure 630 includes a first end close to the input end of the first current-carrying conductor 610, a second end close to the output end of the first current-carrying conductor 610, and a third end located between the first and second ends.

[0145] The second insulating layer 640 is wrapped around the first shielding conductor structure 630;

[0146] The first metal conductor 650 is led out from the third end, and the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through.

[0147] It is understood that the current-carrying line provided in this embodiment differs from the current-carrying lines in the aforementioned embodiments only in that the first shielding conductor structure 630 in this embodiment does not include the first conductor 632. That is, the schematic diagram of the current-carrying line of this embodiment can be obtained by deleting the first conductor 632 in Figures 1 and 2.

[0148] In the current-carrying line provided in the embodiment of the present application, the first current-carrying conductor 610 is used to provide working current for the load device; the first insulating layer 620 wraps the first current-carrying conductor 610 to prevent leakage; a first shielding conductor structure 630 is set outside the first insulating layer 620, which can effectively detect leakage that may occur when the first insulating layer 620 is damaged, and transmit a signal to the outside of the current-carrying line 600 to cut off the power supply, thereby avoiding accidents of electric shock to people and improving safety; by setting a first opening 641 in the second insulating layer 640 and leading out the first metal conductor 650 from the third end of the first shielding conductor structure 630, the first metal The metal conductor 650 passes through the first opening 641, so that the first shielding conductor structure 630 can transmit electrical signals to the outside at the first end close to the input end of the first current-carrying conductor 610, and can transmit electrical signals to the outside at the second end close to the output end of the first current-carrying conductor 610, and can also transmit electrical signals to the outside at the third end through the first metal conductor 650, that is, it can transmit electrical signals to the outside at multiple different positions at the same time, realizing segmented detection of the first shielding conductor structure 630, providing more detection paths, and realizing more comprehensive and reliable safety detection of the current-carrying line, thereby improving the power supply safety of the current-carrying line.

[0149] 5 and 6 , another embodiment of the first aspect of the present application further provides a current-carrying line 600 , comprising a first current-carrying conductor 610 , a first insulating layer 620 , a first shielding conductor structure 630 , and a second insulating layer 640 , wherein:

[0150] The first insulating layer 620 wraps the first current-carrying conductor 610;

[0151] The first shielding conductor structure 630 is used to detect leakage current from the first current-carrying conductor 610. The first shielding conductor structure 630 includes a first shielding layer 631 that wraps the first insulating layer 620, a second shielding layer 633 that wraps the first shielding layer 631, and a first conductor 632 located between the first shielding layer 631 and the second shielding layer 633. The first conductor 632 is used to transmit the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600.

[0152] The second insulating layer 640 is wrapped around the first shielding conductor structure 630 .

[0153] It can be understood that the embodiment shown in Figures 5 and 6 is different from the embodiment shown in Figures 1 to 4 mainly in that the first shielding conductor structure 630, in addition to including the first shielding layer 631 and the first conductor 632, further includes a second shielding layer 633, so that the first shielding conductor structure 630 can more reliably detect the leakage current of the first current-carrying conductor 610, and is less likely to break or disconnect.

[0154] According to the current-carrying line 600 provided in the embodiment of the present application, the first current-carrying conductor 610 is used to provide working current for the load device; the first insulating layer 620 wraps the first current-carrying conductor 610 to prevent leakage; a first shielding conductor structure 630 is provided outside the first insulating layer 620, which can effectively detect leakage that may occur when the first insulating layer 620 is damaged, and transmit a signal to the outside of the current-carrying line 600 to cut off the power supply, thereby avoiding accidents of electric shock to personnel and improving safety; wherein, the first shielding conductor structure 630 is composed of a first shielding layer 631, a first conductor 632, and a second shielding layer 633. The first shielding layer 631 and the second shielding layer 633 both wrap the first current-carrying conductor to fully detect the leakage current on the entire first current-carrying conductor 610. The use of a multi-layer shielding layer structure can improve the reliability of leakage detection; the first conductor 632 serves to conveniently and reliably transmit the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600. In addition, a second insulating layer 640 is used to wrap the first shielding conductor structure 630, so that the contact between the first conductor 632 and the first shielding layer 631 and the second shielding layer 633 is closer, so that the electrical signal on the first shielding layer 631 and the second shielding layer 633 can be more reliably transmitted to the first conductor 632; therefore, the first shielding conductor structure 630 composed of the first shielding layer 631, the first conductor 632 and the second shielding layer 633 has the advantages of comprehensive and reliable detection and convenient and reliable electrical signal transmission, thereby improving the power supply safety of the current-carrying line 600.

[0155] 6 , in the current-carrying line 600 provided in some embodiments of the present application, the first shielding conductor structure 630 includes a first end close to the input end of the first current-carrying conductor 610, a second end close to the output end of the first current-carrying conductor 610, and a third end located between the first end and the second end. The current-carrying line 600 also includes a first metal conductor 650 leading out from the third end, and the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through.

[0156] It can be understood that, taking the placement direction of the current-carrying line 600 shown in Figure 6 as an example, if the left end of the current-carrying line 600 is used to connect to a plug providing power, and the right end is used to connect to a load device, then the first end of the first shielding conductor structure 630 is located on the left side as shown in Figure 6, the second end of the first shielding conductor structure 630 is located on the right side as shown in Figure 6, and the third end is located between the first end and the second end, for example, located inside the first opening 641 shown in Figure 6.

[0157] In this embodiment, the first metal conductor 650 led out from the third end can transmit the electrical signal on the first shielding conductor structure 630 from the third end to the outside of the current-carrying line 600. In this way, for the first shielding conductor structure 630, it can transmit electrical signals from the first end on the left to the outside of the current-carrying line 600, and from the second end on the right to the outside of the current-carrying line 600, and can also transmit electrical signals from the third end in the middle to the outside of the current-carrying line 600, so that leakage detection of the current-carrying line 600 can be realized at different positions; moreover, the first shielding conductor structure 630 can also be divided into two segments, the first segment is located between the first end on the left and the third end in the middle, and the second segment is located between the third end in the middle and the second end on the right, and then the two segments can be separately detected for disconnection, thereby meeting various safety detection requirements for the current-carrying line 600.

[0158] In addition, the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through, that is, the second insulating layer 640 is broken at the first opening 641, and the integrity of the second insulating layer 640 is guaranteed as much as possible at other positions to avoid reducing the protection effect of the second insulating layer 640 on the internal first current-carrying conductor 610 and the first shielding conductor structure 630.

[0159] 6 , in a current-carrying line 600 provided in some embodiments of the present application, an insulating sheath 651 is provided on the outside of a first metal conductor 650 .

[0160] In this embodiment, the insulating outer layer 651 is added to protect the first metal conductor 650, which can prevent the electrical signal transmitted on the first metal conductor 650 from being interfered with by other factors and prevent the first metal conductor 650 from being easily broken by external forces.

[0161] According to the current-carrying line 600 provided in some embodiments of the present application, the first shielding layer 631 adopts a single-sided conductive flexible material, the insulating surface of the first shielding layer 631 faces inward and contacts the outer surface of the first insulating layer 620, and the conductive surface of the first shielding layer 631 faces outward and contacts the first conductor 632 and the second shielding layer 633; ​​the second shielding layer 633 wraps the first shielding layer 631 in a manner of weaving multiple conductors into a mesh.

[0162] The two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface respectively. Therefore, the insulating surface of the first shielding layer 631 faces inward and the conductive surface faces outward, which can ensure that the first shielding layer 631 has a reliable electrical connection with the first conductor 632 and the second shielding layer 633.

[0163] According to the current-carrying line 600 provided in some embodiments of the present application, the first shielding layer 631 wraps the first insulating layer 620 in a manner of weaving multiple conductors into a mesh; the second shielding layer 633 uses a single-sided conductive flexible material, the conductive surface of the second shielding layer 633 faces inward and contacts the first conductor 632 and the first shielding layer 631, and the insulating surface of the second shielding layer 633 faces outward and contacts the inner surface of the second insulating layer 640.

[0164] Similarly, the two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface respectively. The insulating surface of the second shielding layer 633 faces outward and the conductive surface faces inward and outward, which can ensure that the second shielding layer 633 has a reliable electrical connection with the first conductor 632 and the first shielding layer 631.

[0165] According to the current-carrying wire 600 provided in some embodiments of the present application, the first conductor 632 is a single-strand wire or a multi-strand wire; the first conductor 632 is wrapped around the outside of the first insulating layer 620 in a spiral winding manner, or is arranged outside the first insulating layer 620 in parallel along the axial direction of the first current-carrying conductor 610.

[0166] It will be appreciated that, in one embodiment, the first conductor 632 is a tin wire. This is because the current-carrying wire 600 is typically connected to a PCB. Therefore, the electrical signal transmitted from the first conductor 632 to the outside of the current-carrying wire 600 often reaches the PCB. When the first conductor 632 is a tin wire, the first conductor 632 can be directly soldered to the soldering pins of the PCB, simplifying the steps for electrically connecting the current-carrying wire 600 to the PCB and improving production efficiency during processing.

[0167] Specifically, in the embodiment shown in Figure 5, the first conductor 632 is wrapped around the outside of the first shielding layer 631 in a spiral winding manner, and the second shielding layer 633 is wrapped around the outside of the first conductor 632; or, the first conductor 632 is arranged in parallel between the first shielding layer 631 and the second shielding layer 633.

[0168] According to the current-carrying line 600 provided in some embodiments of the present application, the second insulating layer 640 can be made of a flexible insulating film material and wrapped around the outside of the first shielding conductor structure 630, or wrapped parallel to the axis direction of the first current-carrying conductor 610 and wrapped around the first shielding conductor structure 630; the second insulating layer 640 can also be an injection-molded insulating outer skin.

[0169] It is understood that the second insulating layer 640 can also be formed by first using a flexible insulating film material and wrapped around the outside of the first shielding conductor structure 630, or the flexible insulating film material can be wrapped around the first shielding conductor structure 630 parallel to the axis of the first current-carrying conductor 610, and then an injection-molded insulating sheath can be used to wrap around the flexible insulating film material. This arrangement can further enhance the protective effect of the second insulating layer 640 on the first current-carrying conductor 610 and the first shielding conductor structure 630 within the current-carrying line 600.

[0170] The above is an introduction to various embodiments of the current-carrying line according to the first aspect of the present application; the following further introduces various embodiments of the power line according to the second aspect of the present application in conjunction with the accompanying drawings.

[0171] 7 and 8 , a second embodiment of the present application provides a power line, including a first current-carrying line 100 , a second current-carrying line 200 , and a fifth insulating layer 500 , wherein:

[0172] The first current-carrying line 100 includes a first current-carrying conductor 110, a first insulating layer 120 wrapping the first current-carrying conductor 110, and a first shielding conductor structure 130. The first shielding conductor structure 130 is used to detect leakage current from the first current-carrying conductor 110. The first shielding conductor structure 130 includes a first shielding layer 131 wrapping the first insulating layer 120 and a first conductor 132 closely attached to the first shielding layer 131. The first conductor 132 is used to transmit an electrical signal on the first shielding conductor structure 130 to the outside of the current-carrying line.

[0173] The second current-carrying line 200 includes a second current-carrying conductor 210, a third insulating layer 220 wrapping the second current-carrying conductor 210, and a second shielding conductor structure 230. The second shielding conductor structure 230 is used to detect leakage current from the second current-carrying conductor 210. The second shielding conductor structure 230 includes a third shielding layer 231 wrapping the third insulating layer 220 and a second conductor 232 closely attached to the third shielding layer 231. The second conductor 232 is used to transmit an electrical signal on the second shielding conductor structure 230 to the outside of the current-carrying line.

[0174] The fifth insulating layer 500 wraps the first current-carrying wire 100 and the second current-carrying wire 200;

[0175] The first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other within the fifth insulating layer 500 , so that the first shielding conductor structure 130 and the second shielding conductor structure 230 are insulated from each other.

[0176] According to the power cord provided by the embodiment of the present application, in the first current-carrying line 100 and the second current-carrying line 200 of the power cord, the first current-carrying conductor 110 and the second current-carrying conductor 210 are used to provide working current for the load device; the first insulating layer 120 wraps the first current-carrying conductor 110 and the third insulating layer 220 wraps the second current-carrying conductor 210 to avoid leakage; a first shielding conductor structure 130 is provided outside the first insulating layer 120 and a second shielding conductor structure 230 is provided outside the third insulating layer 220, which can effectively detect leakage that may occur when the first insulating layer 120 and the third insulating layer 220 are damaged, and transmit a signal to the outside of the current-carrying line to cut off the power supply, thereby avoiding accidents of electric shock to people and improving safety; wherein, the first shielding conductor structure 130 includes a first shielding layer 131 and a first conductor 132, the second shielding conductor structure 230 includes a third shielding layer 231 and a second conductor 232, the first shielding layer 131 wraps the first current-carrying conductor 110, and the second shielding conductor structure 230 includes a third shielding layer 231 and a second conductor 232. 0 plays a role in comprehensively detecting the leakage current on the entire first current-carrying conductor 110, the third shielding layer 231 wraps the second current-carrying conductor 210 and plays a role in comprehensively detecting the leakage current on the entire second current-carrying conductor 210, the first conductor 132 closely attached to the first shielding layer 131 plays a role in conveniently and reliably transmitting the electrical signal on the first shielding conductor structure 130 to the outside of the first current-carrying line 100, and the second conductor 232 closely attached to the third shielding layer 231 plays a role in conveniently and reliably transmitting the electrical signal on the second shielding conductor structure 230 to the outside of the second current-carrying line 200; therefore, the first shielding conductor structure 130 composed of the first shielding layer 131 and the first conductor 132, and the second shielding conductor structure 230 composed of the third shielding layer 231 and the second conductor 232, have the advantages of comprehensive detection and convenient and reliable electrical signal transmission, thereby improving the power supply safety of the first current-carrying line 100 and the second current-carrying line 200, and thus improving the power supply safety of the power line.

[0177] 7 and 8 , in the power lines provided in some embodiments of the present application, the first current-carrying line 100 further includes a second insulating layer 140 wrapped around the first shielding conductor structure 130 , and the second current-carrying line 200 further includes a fourth insulating layer 240 wrapped around the second shielding conductor structure 230 .

[0178] It can be understood that the second insulating layer 140 is used to wrap the first shielding conductor structure 130, and the fourth insulating layer 240 is used to wrap the second shielding conductor structure 230, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 can be insulated from each other, avoiding mutual interference between the leakage detection of the first current-carrying line 100 and the leakage detection of the second current-carrying line 200.

[0179] It should be noted that in the embodiments shown in Figures 7 and 8, the second insulating layer 140 and the fourth insulating layer 240 are present simultaneously. In other extended embodiments, neither the second insulating layer 140 nor the fourth insulating layer 240 may be provided. When only either the second insulating layer 140 or the fourth insulating layer 240 is provided, the first shielded conductor structure 130 and the second shielded conductor structure 230 can be insulated from each other, thereby preventing interference between the leakage detection of the first current-carrying line 100 and the leakage detection of the second current-carrying line 200. In other subsequent embodiments, the examples of the simultaneous provision of the second insulating layer 140 and the fourth insulating layer 240 are used for illustration and description, but the examples can also be extended to the case where neither the second insulating layer 140 nor the fourth insulating layer 240 is provided.

[0180] In addition, in the power cords provided in some embodiments of the present application, the interior of the fifth insulating layer 500 is filled with insulating material except for the first current-carrying line 100 and the second current-carrying line 200. It is understood that when the interior of the fifth insulating layer 500 is filled with insulating material and the first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other within the fifth insulating layer 500, mutual insulation between the first shielding conductor structure 130 and the second shielding conductor structure 230 can be achieved without providing the second insulating layer 140 and the fourth insulating layer 240.

[0181] Referring to FIG. 7 , the power cord provided in some embodiments of the present application further includes a third current-carrying wire 700 disposed within the fifth insulating layer 500. The first current-carrying wire 100 can be used as a live wire, the second current-carrying wire 200 can be used as a neutral wire or another live wire, and the third current-carrying wire 700 can be used as a ground wire. The third current-carrying wire 700 can be provided with an insulating outer sheath.

[0182] In the power cord provided in some embodiments of the present application, the first shielding conductor structure 130 includes a first end close to the input end of the power cord, a second end close to the output end of the power cord, and a third end located between the first and second ends; the second shielding conductor structure 230 includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth and fifth ends;

[0183] The first current-carrying line 100 and the second current-carrying line 200 also meet any one of the following four conditions:

[0184] Case 1: The first current-carrying line 100 further includes a first metal conductor 150 extending from the third end, and the first metal conductor 150 is connected to the sixth end; for example, as shown in FIG. 9 a ;

[0185] Case 2: The second current-carrying line 200 further includes a second metal conductor 250 extending from the sixth end, and the second metal conductor 250 is connected to the third end; for example, as shown in FIG. 9 b ;

[0186] Case 3: The first current-carrying line 100 further includes a first metal conductor 150 extending from the third end, and the second current-carrying line 200 further includes a second metal conductor 250 extending from the sixth end. The first metal conductor 150 is connected to the second metal conductor 250, as shown in FIG. 9 c .

[0187] Case 4: The power line is further provided with a third metal conductor 900 , and both ends of the third metal conductor 900 are respectively connected to the third end and the sixth end, as shown in FIG. 9 d .

[0188] According to the power cord provided in some embodiments of the present application, when the second insulating layer 140 exists, the second insulating layer 140 is provided with a first opening 141 for the first metal conductor 150 to pass through; when the fourth insulating layer 240 exists, the fourth insulating layer 240 is provided with a second opening 241 for the second metal conductor 250 to pass through.

[0189] It is understandable that, taking the power cord arrangement shown in FIG8 as an example, if the left end of the power cord is used to connect to the plug that provides power, and the right end is used to connect to the load device:

[0190] Then the first end of the first shielding conductor structure 130 is located on the left side as shown in FIG8 , the second end of the first shielding conductor structure 130 is located on the right side as shown in FIG8 , and the third end is located between the first end and the second end, for example, located inside the first opening 141 as shown in FIG8 ; the first metal conductor 150 led out from the third end can transmit the electrical signal on the first shielding conductor structure 130 from the third end to the outside of the first current-carrying line 100. In this way, for the first shielding conductor structure 130, it can transmit electrical signals from the first end on the left to the outside of the first current-carrying line 100. Signals can be transmitted from the second end on the right side to the outside of the first current-carrying line 100, and from the third end in the middle to the outside of the first current-carrying line 100, thereby enabling leakage detection of the first current-carrying line 100 at different locations; moreover, the first shielded conductor structure 130 can be divided into two segments, the first segment being located between the first end on the left and the third end in the middle, and the second segment being located between the third end in the middle and the second end on the right side, so that disconnection detection can be performed on each of these two segments, thereby meeting the needs of various safety detections. In addition, the second insulating layer 140 is provided with a first opening 141 for the first metal conductor 150 to pass through, that is, the second insulating layer 140 is broken at the first opening 141, while the integrity of the second insulating layer 140 is maintained as much as possible at other locations to avoid reducing the protective effect of the second insulating layer 140 on the first current-carrying conductor 110 and the first shielded conductor structure 130 inside.

[0191] Similarly, the fourth end of the second shielding conductor structure 230 is located on the left side as shown in FIG8 , the fifth end of the second shielding conductor structure 230 is located on the right side as shown in FIG8 , and the sixth end is located between the fourth end and the fifth end, for example, located inside the second opening 241 as shown in FIG8 ; the second metal conductor 250 led out from the sixth end can transmit the electrical signal on the second shielding conductor structure 230 from the sixth end to the outside of the second current-carrying line 200. In this way, for the second shielding conductor structure 230, it can transmit the electrical signal from the fourth end on the left to the outside of the second current-carrying line 200. The electrical signal can be transmitted from the fifth end on the right side to the outside of the second current-carrying line 200, and can also be transmitted from the sixth end in the middle to the outside of the second current-carrying line 200, thereby enabling leakage detection of the second current-carrying line 200 at different locations; moreover, the second shielding conductor structure 230 can be divided into two segments, the first segment being located between the fourth end on the left side and the sixth end in the middle, and the second segment being located between the sixth end in the middle and the fifth end on the right side, so that disconnection detection can be performed on each of the two segments, thereby meeting the needs of various safety detection. In addition, the fourth insulating layer 240 is provided with a second opening 241 for the second metal conductor 250 to pass through, that is, the fourth insulating layer 240 is broken at the second opening 241, while the integrity of the fourth insulating layer 240 is maintained as much as possible at other locations to avoid reducing the protective effect of the fourth insulating layer 240 on the second current-carrying conductor 210 and the second shielding conductor structure 230.

[0192] It should also be noted that, taking Figure 9c as an example, the first metal conductor 150 is connected to the second metal conductor 250, that is, the third end of the first shielding conductor structure 130 is electrically connected to the sixth end of the second shielding conductor structure 230, so that there is a connection point between the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200, and the two shielding conductor structures are no longer independent and separated. For example, the first segment of the first shielding conductor structure 130 between the first end on the left and the third end in the middle is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250. Similarly, the second segment of the first shielding conductor structure 130 between the third end in the middle and the second end on the right is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, which greatly enriches the feasibility and flexibility of leakage detection and shielding structure open circuit detection of the power line, and is conducive to improving power supply safety.

[0193] 8 , in the power cord provided in some embodiments of the present application, the exterior of the first metal conductor 150 and the exterior of the second metal conductor 250 are both provided with an insulating sheath.

[0194] In this embodiment, an insulating sheath is added to the outside of the first metal conductor 150 and the outside of the second metal conductor 250 to protect the first metal conductor 150 and the second metal conductor 250, thereby preventing the electrical signals transmitted on the first metal conductor 150 and the second metal conductor 250 from being interfered with by other factors and preventing the first metal conductor 150 and the second metal conductor 250 from being easily broken by external forces.

[0195] In the power cord provided in some embodiments of the present application, for example, in case one, the first metal conductor 150 extends directly from the second opening 241 to the sixth end of the second shielding conductor structure 230, and is welded to the sixth end to achieve electrical connection, for example, as shown in Figure 9a; in case two, the second metal conductor extends directly from the first opening 141 to the third end of the first shielding conductor structure 130, and is welded to the third end to achieve electrical connection, for example, as shown in Figure 9b; in case three, the first metal conductor 150 and the second metal conductor are welded between the third end and the sixth end to achieve electrical connection, for example, as shown in Figure 9c; in case four, one end of the third metal conductor 900 extends from the first opening 141 to the third end of the first shielding conductor structure 130 and is welded to the third end to achieve electrical connection, and the other end extends from the second opening 241 to the sixth end of the second shielding conductor structure 230 and is welded to the sixth end to achieve electrical connection, for example, as shown in Figure 9d.

[0196] It is understandable that the welding positions of the first metal conductor 150 and the second metal conductor 250 may be selected based on the convenience during welding.

[0197] In the power cord provided in some embodiments of the present application, the first metal conductor 150 and the second metal conductor 250 extend to a position close to the input end of the power cord, as shown in FIG8 , for example; or the first metal conductor 150 and the second metal conductor 250 extend to a position close to the output end of the power cord to achieve electrical connection, as shown in FIG10 , for example.

[0198] It can be understood that when the first metal conductor 150 and the second metal conductor 250 extend to a position close to the input end of the power line or a position close to the output end of the power line to achieve electrical connection, they can be directly welded together to achieve electrical connection, or they can be short-circuited together through a terminal block, or they can be connected to a PCB board and electrically connected through the PCB board.

[0199] 8 , in the power cord provided in some embodiments of the present application, the first conductor 132 and the second conductor 232 are multi-strand wires, and the first metal conductor 150 is obtained by leading out from the third end of several strands of the first conductor 132 ; the second metal conductor 250 is obtained by leading out from the sixth end of several strands of the second conductor 232 .

[0200] In this embodiment, the first conductor 132 is a multi-stranded wire, several of which are led out from the third end to form the first metal conductor 150. Therefore, the first conductor 132 in the first shielded conductor structure 130 can transmit electrical signals to the outside of the first current-carrying line 100 at the first end, at the second end, and at the third end. Similarly, the second conductor 232 is a multi-stranded wire, several of which are led out from the sixth end to form the second metal conductor 250. Therefore, the second conductor 232 in the second shielded conductor structure 230 can transmit electrical signals to the outside of the second current-carrying line 200 at the fourth end, at the fifth end, and at the sixth end. It can be understood that the first metal conductor 150 and the second metal conductor 250 obtained by this method have the advantages of convenient operation and reliable signal transmission.

[0201] It will be appreciated that, in one embodiment, the first conductor 132 and the second conductor 232 are tinned wires. This is because power cables are typically connected to a PCB. Therefore, the electrical signals transmitted from the first conductor 132 to the exterior of the first current-carrying cable 100 and from the second conductor 232 to the exterior of the second current-carrying cable 200 often reach the PCB. When the first and second conductors 132, 232 are tinned wires, they can be directly soldered to the soldering pins of the PCB, simplifying the steps for electrically connecting the power cables to the PCB and improving production efficiency during processing.

[0202] In the power cord provided in some embodiments of the present application, the first shielding layer 131 is formed by weaving multiple conductors into a mesh to wrap the first insulating layer 120, the third shielding layer 231 is formed by weaving multiple conductors into a mesh to wrap the third insulating layer 220, the first metal conductor 150 is obtained by leading out from the third end of several conductors in the first shielding layer 131, and the second metal conductor 250 is obtained by leading out from the sixth end of several conductors in the third shielding layer 231.

[0203] It can be understood that, unlike the above-mentioned method of selecting several strands of wire from the first conductor 132 and leading them from the third end as the first metal conductor 150 and selecting several strands of wire from the second conductor 232 and leading them from the sixth end as the second metal conductor 250, this embodiment selects several strands of conductor from the first shielding layer 131 and leading them from the third end as the first metal conductor 150 and selects several strands of conductor from the third shielding layer 231 and leading them from the sixth end as the second metal conductor 250, which can achieve the same effect and has the advantages of convenient operation and reliable signal transmission.

[0204] In the power cord provided in some embodiments of the present application, the first shielding layer 131 adopts a single-sided conductive flexible material; the first shielding layer 131 wraps the first insulating layer 120 in a spiral winding manner, or wraps the first insulating layer 120 parallel to the axial direction of the first current-carrying conductor 110; the third shielding layer 231 adopts a single-sided conductive flexible material; the third shielding layer 231 wraps the third insulating layer 220 in a spiral winding manner, or wraps the third insulating layer 220 parallel to the axial direction of the second current-carrying conductor 210.

[0205] The two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface, respectively. Therefore, in order to ensure that the first shielding layer 131 and the first conductor 132 have a reliable electrical connection, the conductive surface of the first shielding layer 131 needs to face the first conductor 132; for example, for the embodiment shown in Figure 7, the first conductor 132 is located between the first shielding layer 131 and the second insulating layer 140. At this time, the insulating surface of the first shielding layer 131 faces inward to wrap the first insulating layer 120, and the conductive surface of the first shielding layer 131 faces outward and contacts the first conductor 132; it can be understood that for the embodiment in which the first conductor 132 is located between the first insulating layer 120 and the first shielding layer 131, the conductive surface of the first shielding layer 131 faces inward and wraps the first insulating layer 120 and the first conductor 132, so that the conductive surface of the first shielding layer 131 is in good contact with the first conductor 132.

[0206] Similarly, in order to ensure that the third shielding layer 231 and the second conductor 232 have a reliable electrical connection, the conductive surface of the third shielding layer 231 needs to be facing the second conductor 232; for example, for the embodiment shown in Figure 7, the second conductor 232 is located between the third shielding layer 231 and the fourth insulating layer 240. At this time, the insulating surface of the third shielding layer 231 faces inward and wraps the third insulating layer 220, and the conductive surface of the third shielding layer 231 faces outward and contacts the second conductor 232; it can be understood that for the embodiment in which the second conductor 232 is located between the third insulating layer 220 and the third shielding layer 231, the conductive surface of the third shielding layer 231 faces inward and wraps the third insulating layer 220 and the second conductor 232, so that the conductive surface of the third shielding layer 231 is in good contact with the second conductor 232.

[0207] In the power cord provided in some embodiments of the present application, the first shielding layer 131 wraps the first insulating layer 120 by weaving multiple conductors into a mesh; the third shielding layer 231 wraps the third insulating layer 220 by weaving multiple conductors into a mesh.

[0208] Compared with the above embodiment that uses a single-sided conductive flexible material as the first shielding layer 131, this embodiment provides a first shielding layer 131 and a third shielding layer 231 made of different materials, and uses multiple conductors woven into a mesh as the first shielding layer 131 and the third shielding layer 231. Several conductors can be pulled out from the first shielding layer 131 and passed through the first opening 141 to form the first metal conductor 150, and several conductors can be pulled out from the third shielding layer 231 and passed through the second opening 241 to form the second metal conductor 250.

[0209] In the power cord provided in some embodiments of the present application, the first shielding layer 131 includes both a shielding layer composed of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple conductors; the third shielding layer 231 includes both a shielding layer composed of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple conductors.

[0210] In this embodiment, the first shielding layer 131 includes both the aforementioned single-sided conductive flexible material and a shielding layer woven into a mesh with multiple conductors, which can improve the reliability of the first shielding layer 131. The first shielding layer 131 can more reliably detect the leakage current of the first current-carrying conductor 110 and is not prone to rupture or disconnection. Similarly, the third shielding layer 231 includes both the aforementioned single-sided conductive flexible material and a shielding layer woven into a mesh with multiple conductors, which can improve the reliability of the third shielding layer 231. The third shielding layer 231 can more reliably detect the leakage current of the second current-carrying conductor 210 and is not prone to rupture or disconnection.

[0211] In the power cord provided in some embodiments of the present application, the first conductor 132 is located between the first insulating layer 120 and the first shielding layer 131, for example, as shown in Figure 7; or when the second insulating layer 140 is present, the first conductor 132 is located between the first shielding layer 131 and the second insulating layer 140; the second conductor 232 is located between the third insulating layer 220 and the third shielding layer 231, for example, as shown in Figure 7; or when the fourth insulating layer 240 is present, it is located between the third shielding layer 231 and the fourth insulating layer 240.

[0212] It can be understood that in this embodiment, the relative positions of the first shielding layer 131 and the first conductor 132 constituting the first shielding conductor structure 130 can be interchanged, and it is only necessary to ensure that the two are tightly together and have a reliable electrical connection relationship to ensure the stability of electrical signal transmission; similarly, the relative positions of the third shielding layer 231 and the second conductor 232 constituting the second shielding conductor structure 230 can be interchanged, and it is only necessary to ensure that the two are tightly together and have a reliable electrical connection relationship to ensure the stability of electrical signal transmission.

[0213] 11 and 12 , in the power cord provided in some embodiments of the present application, the first shielding conductor structure 130 further includes a second shielding layer 133 wrapping the first shielding layer 131 and the first conductor 132, and the first conductor 132 is located between the first shielding layer 131 and the second shielding layer 133; the second shielding conductor structure 230 further includes a fourth shielding layer 233 wrapping the third shielding layer 231 and the second conductor 232, and the second conductor 232 is located between the third shielding layer 231 and the fourth shielding layer 233.

[0214] It can be understood that the embodiments shown in Figures 11 and 12 differ from the embodiments shown in Figures 7 and 8 mainly in that the first shielding conductor structure 130, in addition to including the first shielding layer 131 and the first conductor 132, further includes a second shielding layer 133, and the second shielding conductor structure 230, in addition to including the third shielding layer 231 and the second conductor 232, further includes a fourth shielding layer 233, so that the second shielding conductor structure 230 can more reliably detect the leakage current of the second current-carrying conductor 210, and is less likely to break or disconnect.

[0215] In the power cord provided in some embodiments of the present application, the first shielding layer 131 adopts a single-sided conductive flexible material, the insulating surface of the first shielding layer 131 faces inward and contacts the outer surface of the first insulating layer 120, and the conductive surface of the first shielding layer 131 faces outward and contacts the first conductor 132 and the second shielding layer 133; the second shielding layer 133 wraps the first shielding layer 131 in a manner of weaving a plurality of conductors into a mesh; the third shielding layer 231 adopts a single-sided conductive flexible material, the insulating surface of the third shielding layer 231 faces inward and contacts the outer surface of the third insulating layer 220, and the conductive surface of the third shielding layer 231 faces outward and contacts the second conductor 232 and the fourth shielding layer 233; the fourth shielding layer 233 wraps the third shielding layer 231 in a manner of weaving a plurality of conductors into a mesh.

[0216] The two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface, respectively. Therefore, the insulating surface of the first shielding layer 131 faces inward and the conductive surface faces outward, which can ensure that the first shielding layer 131 has a reliable electrical connection with the first conductor 132 and the second shielding layer 133; similarly, the insulating surface of the third shielding layer 231 faces inward and the conductive surface faces outward, which can ensure that the third shielding layer 231 has a reliable electrical connection with the second conductor 232 and the fourth shielding layer 233.

[0217] In the power cord provided in some embodiments of the present application, the first shielding layer 131 is formed by weaving a plurality of conductors into a mesh to wrap the first insulating layer 120; the second shielding layer 133 is formed by a single-sided conductive flexible material, the conductive surface of the second shielding layer 133 faces inward and contacts the first conductor 132 and the first shielding layer 131, and the insulating surface of the second shielding layer 133 faces outward and contacts the inner surface of the second insulating layer 140; the third shielding layer 231 is formed by weaving a plurality of conductors into a mesh to wrap the third insulating layer 220; the fourth shielding layer 233 is formed by weaving a single-sided conductive flexible material, the conductive surface of the fourth shielding layer 233 faces inward and contacts the second conductor 232 and the third shielding layer 231; when the fourth insulating layer 240 exists, the insulating surface of the fourth shielding layer 233 faces outward and contacts the inner surface of the fourth insulating layer 240.

[0218] Similarly, the two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface respectively. The insulating surface of the second shielding layer 133 faces outward and the conductive surface faces inward and outward, which can ensure that the second shielding layer 133 has a reliable electrical connection with the first conductor 132 and the first shielding layer 131; the insulating surface of the fourth shielding layer 233 faces outward and the conductive surface faces inward and outward, which can ensure that the fourth shielding layer 233 has a reliable electrical connection with the second conductor 232 and the third shielding layer 231.

[0219] In the power cord provided in some embodiments of the present application, the first conductor 132 is wrapped around the outside of the first insulating layer 120 in a spiral winding manner, or is arranged outside the first insulating layer 120 in parallel along the axial direction of the first current-carrying conductor 110; the second conductor 232 is wrapped around the outside of the third insulating layer 220 in a spiral winding manner, or is arranged outside the third insulating layer 220 in parallel along the axial direction of the second current-carrying conductor 210.

[0220] Specifically, in the embodiment shown in Figure 11, the first conductor 132 is wrapped around the outside of the first shielding layer 131 in a spiral winding manner, and the second shielding layer 133 is wrapped around the outside of the first conductor 132; or, the first conductor 132 is arranged in parallel between the first shielding layer 131 and the second shielding layer 133; the second conductor 232 is wrapped around the outside of the third shielding layer 231 in a spiral winding manner, and the fourth shielding layer 233 is wrapped around the outside of the second conductor 232; or, the second conductor 232 is arranged in parallel between the third shielding layer 231 and the fourth shielding layer 233.

[0221] In the power cord provided in some embodiments of the present application, the second insulating layer 140 may be made of a flexible insulating film material and may be wrapped around the outside of the first shielding conductor structure 130 or may be wrapped around the first shielding conductor structure 130 in parallel along the axis of the first current-carrying conductor 110; the second insulating layer 140 may also be an injection-molded insulating outer layer; the fourth insulating layer 240 may be made of a flexible insulating film material and may be wrapped around the outside of the second shielding conductor structure 230 or may be wrapped around the second shielding conductor structure 230 in parallel along the axis of the second current-carrying conductor 210;

[0222] The fourth insulating layer 240 may be an injection-molded insulating sheath.

[0223] It can be understood that the second insulating layer 140 can also first use a flexible insulating film material and wrap it around the outside of the first shielding conductor structure 130, or the flexible insulating film material can wrap the first shielding conductor structure 130 in parallel along the axial direction of the first current-carrying conductor 110, and then use an injection-molded insulating outer skin to wrap it around the outside of the flexible insulating film material. Such a setting can further improve the protection effect of the second insulating layer 140 on the first current-carrying conductor 110 and the first shielding conductor structure 130 inside the first current-carrying line 100; similarly, the fourth insulating layer 240 can also first use a flexible insulating film material and wrap it around the outside of the second shielding conductor structure 230, or the flexible insulating film material can wrap the second shielding conductor structure 230 in parallel along the axial direction of the second current-carrying conductor 210, and then use an injection-molded insulating outer skin to wrap it around the outside of the flexible insulating film material. Such a setting can further improve the protection effect of the fourth insulating layer 240 on the second current-carrying conductor 210 and the second shielding conductor structure 230 inside the second current-carrying line 200.

[0224] 7 and 8 , or 11 and 12 , in the power cord provided in some embodiments of the present application, the power cord further includes a first return line 300 and a second return line 400 located inside the fifth insulating layer 500 ; an end of the first return line 300 close to the output end is connected to the second end; an end of the second return line 400 close to the output end is connected to the fifth end.

[0225] It is understood that by providing the first return line 300, the electrical signal transmitted from the second end of the first shielded conductor structure 130 can be routed back from the side near the power line output end to the side near the power line input end. Similarly, by providing the second return line 400, the electrical signal transmitted from the fifth end of the second shielded conductor structure 230 can be routed back from the side near the power line output end to the side near the power line input end. In this way, a power line detection and protection device can be uniformly provided on the side near the power line input end to detect power line leakage and shielding structure open circuit conditions.

[0226] 11 and 12 , in the power cord provided in some embodiments of the present application, the first shielding conductor structure 130 further includes a second shielding layer 133 wrapping the first shielding layer 131 and the first conductor 132, and the first conductor 132 is located between the first shielding layer 131 and the second shielding layer 133; the second shielding conductor structure 230 further includes a fourth shielding layer 233 wrapping the third shielding layer 231 and the second conductor 232, and the second conductor 232 is located between the third shielding layer 231 and the fourth shielding layer 233.

[0227] It can be understood that the solution described in this embodiment is based on the solution in which the first return line 300 and the second return line 400 are provided inside the fifth insulating layer 500. The specific functions and effects can be referred to the aforementioned solution in which the first return line 300 and the second return line 400 are not provided inside the fifth insulating layer 500, and will not be repeated here.

[0228] In the power cord provided in some embodiments of the present application, the first shielding layer 131 adopts a single-sided conductive flexible material, the insulating surface of the first shielding layer 131 faces inward and contacts the outer surface of the first insulating layer 120, and the conductive surface of the first shielding layer 131 faces outward and contacts the first conductor 132 and the second shielding layer 133; the second shielding layer 133 wraps the first shielding layer 131 in a manner of weaving a plurality of conductors into a mesh; the third shielding layer 231 adopts a single-sided conductive flexible material, the insulating surface of the third shielding layer 231 faces inward and contacts the outer surface of the third insulating layer 220, and the conductive surface of the third shielding layer 231 faces outward and contacts the second conductor 232 and the fourth shielding layer 233; the fourth shielding layer 233 wraps the third shielding layer 231 in a manner of weaving a plurality of conductors into a mesh.

[0229] It can be understood that the solution described in this embodiment is based on the solution in which the first return line 300 and the second return line 400 are provided inside the fifth insulating layer 500. The specific functions and effects can be referred to the aforementioned solution in which the first return line 300 and the second return line 400 are not provided inside the fifth insulating layer 500, and will not be repeated here.

[0230] In the power lines provided in some embodiments of the present application, the first return line 300 can be located outside the first current-carrying line 100, as shown in Figure 11; the first return line 300 can also be located between the second insulating layer 140 and the first shielding conductor structure 130; the first return line 300 can also be located inside the first shielding conductor structure 130; the first return line 300 can also be located between the first shielding conductor structure 130 and the first insulating layer 120.

[0231] Among them, when the first return line 300 is adjacent to the first shielding conductor structure 130 or is located inside the first shielding conductor structure 130, in order to avoid mutual interference between the electrical signal transmitted on the first return line 300 and the electrical signal on the first shielding conductor structure 130, the first return line 300 should use a wire with an insulating sheath.

[0232] In the power lines provided in some embodiments of the present application, the second return line 400 can be located outside the second current-carrying line 200, as shown in Figure 11; the second return line 400 can also be located between the fourth insulating layer 240 and the second shielding conductor structure 230; the second return line 400 can also be located inside the second shielding conductor structure 230; the second return line 400 can also be located between the second shielding conductor structure 230 and the third insulating layer 220.

[0233] Similarly, when the second return line 400 is adjacent to the second shielding conductor structure 230 or is located inside the second shielding conductor structure 230, in order to avoid mutual interference between the electrical signals transmitted on the second return line 400 and the electrical signals on the second shielding conductor structure 230, the second return line 400 should use a wire with an insulating sheath.

[0234] In the power cord provided in some embodiments of the present application, an end of the first shielding layer 131 close to the output end, or an end of the first conductor 132 close to the output end, or an end of the second shielding layer 133 close to the output end serves as the second end and is connected to an end of the first return line 300 close to the output end of the power cord.

[0235] It can be understood that since the first shielding conductor structure 130 includes the first shielding layer 131 , the first conductor 132 and the second shielding layer 133 , all of which are conductive, the second end can be drawn out from any one of the three and connected to the first return line 300 .

[0236] In the power cord provided in some embodiments of the present application, an end of the third shielding layer 231 close to the output end, or an end of the second conductor 232 close to the output end, or an end of the fourth shielding layer 233 close to the output end serves as the fifth end and is connected to an end of the second return line 400 close to the output end of the power cord.

[0237] It is understandable that since the second shielding conductor structure 230 includes the third shielding layer 231 , the second conductor 232 and the fourth shielding layer 233 , all of which are conductive, the second end can be drawn out from any one of the three and connected to the second return line 400 .

[0238] In the power cord provided in some embodiments of the present application, the first return line 300 and the second return line 400 are conductive wires with insulating sheaths.

[0239] In this embodiment, the first return line 300 and the second return line 400 are made of conductive wires with insulating sheaths, which can prevent the electrical signals transmitted on the first return line 300 and the second return line 400 from interfering with other electrical signals.

[0240] In addition, a second embodiment of the present application provides a power line, including a first current-carrying line 100 and a second current-carrying line 200, wherein:

[0241] The first current-carrying line 100 includes a first current-carrying conductor 110, a first insulating layer 120 wrapping the first current-carrying conductor 110, and a first shielding conductor structure 130. The first shielding conductor structure 130 is used to detect leakage current from the first current-carrying conductor 110. The first shielding conductor structure 130 includes a first shielding layer 131 wrapping the first insulating layer 120. The first shielding conductor structure 130 includes a first end close to the input end of the power line, a second end close to the output end of the power line, and a third end located between the first and second ends.

[0242] The second current-carrying line 200 includes a second current-carrying conductor 210, a third insulating layer 220 surrounding the second current-carrying conductor 210, and a second shielding conductor structure 230. The second shielding conductor structure 230 is used to detect leakage current from the second current-carrying conductor 210. The second shielding conductor structure 230 includes a third shielding layer 231 surrounding the third insulating layer 220. The second shielding conductor structure 230 includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth and fifth ends.

[0243] The fifth insulating layer 500 wraps the first current-carrying wire 100 and the second current-carrying wire 200;

[0244] The first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other in the fifth insulating layer 500 so that the first shielding conductor structure 130 and the second shielding conductor structure 230 are insulated from each other.

[0245] The first current-carrying line 100 and the second current-carrying line 200 also meet any one of the following four conditions:

[0246] Case 1: The first current-carrying line 100 further includes a first metal conductor 150 extending from the third end, and the first metal conductor 150 is connected to the sixth end;

[0247] Case 2: The second current-carrying line 200 further includes a second metal conductor 250 extending from the sixth end, and the second metal conductor 250 is connected to the third end;

[0248] Case 3: The first current-carrying line 100 further includes a first metal conductor 150 extending from the third end, and the second current-carrying line 200 further includes a second metal conductor 250 extending from the sixth end, and the first metal conductor 150 is connected to the second metal conductor 250;

[0249] Case 4: The power line is further provided with a third metal conductor 900 , and both ends of the third metal conductor 900 are connected to the third end and the sixth end respectively.

[0250] It will be appreciated that the power cord provided in this embodiment differs from the power cords in the aforementioned embodiments only in that the first shielded conductor structure 130 in this embodiment does not include the first conductor 132, and the second shielded conductor structure 230 does not include the second conductor 232. That is, the schematic diagrams of the power cord of this embodiment can be obtained by removing the first conductor 132 and the second conductor 232 from Figures 9a, 9b, 9c, and 9d.

[0251] In the power line provided in the embodiment of the present application, by adopting any one of the cases 1 to 4, the third end of the first shielding conductor structure 130 and the sixth end of the second shielding conductor structure 230 are electrically connected together, so that the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200 have a connection point, and the two shielding conductor structures are no longer independent and separate. For example, the first segment between the first end on the left and the third end in the middle of the first shielding conductor structure 100 is electrically connected to the second shielding conductor structure through the first metal conductor 150 and / or the second metal conductor 250. 230. Similarly, the second segment of the first shielding conductor structure 130 between the third end in the middle and the second end on the right is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and / or the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, which greatly enriches the feasibility and flexibility of leakage detection and shielding structure open circuit detection of the power line, and is conducive to improving the power supply safety of the power line.

[0252] It can also be understood that the first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other inside the fifth insulating layer 500, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other, thereby avoiding mutual interference between the leakage detection of the first current-carrying line and the leakage detection of the second current-carrying line.

[0253] 13 , the third aspect of the present application provides an electrical connection device 800, comprising a shell 810, a detection and protection device disposed inside the shell 810, and a power cord as described above in the second aspect of the embodiment, wherein the first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell 810, and the third end and the sixth end are located at the connection between the power cord and the shell 810.

[0254] 13 , the third embodiment of the present application further provides an electrical connection device 800, comprising a shell 810, a detection and protection device arranged inside the shell 810, and a power cord as described above in the second embodiment, wherein the first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell 810, the output end of the power cord is used to connect to a load device, and the third end and the sixth end are located at the connection between the power cord and the load device.

[0255] 13 , the third embodiment of the present application further provides an electrical connection device 800, comprising a shell 810, a detection and protection device arranged inside the shell 810, and a power cord as described above in the second embodiment, wherein the first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell 810, the output end of the power cord is used to connect to a load device, and the third end and the sixth end are located between the shell 810 and the load device.

[0256] In the electrical connection device 800 provided in some embodiments of the present application, a wire clip for fixing the power cord is provided at the connection between the power cord and the housing 810 .

[0257] By providing a line clip to fix the power line, it is possible to prevent the power line from being easily dragged by external force and causing the ports connected to the detection and protection device to fall off.

[0258] 14 , in an electrical connection device 800 provided in some embodiments of the present application, the detection and protection device includes:

[0259] A switch module 910 is used to control the power connection between the input end and the output end of the power line;

[0260] The driving module 920 is respectively connected to the first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, the fifth end, and the switch module 910, and is used to control the switch module 920 to disconnect the power connection when a leakage current or an open circuit is detected in the first shielding conductor structure 130, and / or when a leakage current or an open circuit is detected in the second shielding conductor structure 230.

[0261] It should be noted that, in this embodiment, the third end of the first shielding conductor structure 130 in the power line is electrically connected to the sixth end of the second shielding conductor structure 230, so that there is a connection point between the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200, and the two shielding conductor structures are no longer independent and separated. For example, the first segment of the first shielding conductor structure 130 between the first end on the left and the third end in the middle is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250. Similarly, the second segment of the first shielding conductor structure 130 between the third end in the middle and the second end on the right is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, which greatly enriches the feasibility and flexibility of leakage detection and shielding structure open circuit detection of the power line, and is conducive to improving power supply safety.

[0262] In addition, the fourth embodiment of the present application provides an electrical device, including a load device and the electrical connection device of the third embodiment above, and the output end of the power line is connected to the load device.

[0263] In the electrical equipment of this embodiment, the third end of the first shielding conductor structure 130 in the power line is electrically connected to the sixth end of the second shielding conductor structure 230, so that there is a connection point between the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200, and the two shielding conductor structures are no longer independent and separated. For example, the first segment of the first shielding conductor structure 130 between the first end on the left and the third end in the middle is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250. Similarly, the second segment of the first shielding conductor structure 130 between the third end in the middle and the second end on the right is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, which greatly enriches the feasibility and flexibility of leakage detection and shielding structure open circuit detection of the power line, and is conducive to improving the power supply safety of the power line.

[0264] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A current-carrying line, comprising: a first current carrying conductor; a first insulating layer, wrapping the first current-carrying conductor; a first shielded conductor structure, used for detecting leakage current from the first current-carrying conductor, the first shielded conductor structure comprising a first shielding layer wrapping the first insulating layer and a first conductor close to the first shielding layer, the first conductor being used for transmitting an electrical signal on the first shielded conductor structure to the outside of the current-carrying line; as well as The second insulating layer is wrapped around the first shielding conductor structure.

2. The current-carrying line according to claim 1, wherein: The first shielding conductor structure includes a first end close to the input end of the first current-carrying conductor, a second end close to the output end of the first current-carrying conductor, and a third end located between the first end and the second end. The current-carrying line also includes a first metal conductor leading out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

3. The current-carrying line according to claim 2, wherein: The first metal conductor is provided with an insulating sheath on its exterior.

4. The current-carrying line according to any one of claims 1 to 3, wherein: The first shielding layer is made of a single-sided conductive flexible material; the first shielding layer is wrapped around the first insulating layer in a spiral winding manner, or is wrapped around the first insulating layer in parallel along the axial direction of the first current-carrying conductor.

5. The current-carrying line according to any one of claims 1 to 4, wherein: The first shielding layer wraps the first insulating layer in a manner of weaving a plurality of conductors into a mesh.

6. The current-carrying line according to any one of claims 1 to 5, wherein: The first shielding layer includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple conductors.

7. The current-carrying line according to any one of claims 1 to 6, wherein: The first conductor is located between the first insulating layer and the first shielding layer, or between the first shielding layer and the second insulating layer.

8. A current-carrying line comprising: a first current carrying conductor; a first insulating layer, wrapping the first current-carrying conductor; a first shielded conductor structure, for detecting leakage current from the first current-carrying conductor, the first shielded conductor structure comprising a first shielding layer wrapping the first insulating layer; the first shielded conductor structure comprising a first end close to an input end of the first current-carrying conductor, a second end close to an output end of the first current-carrying conductor, and a third end located between the first end and the second end; A second insulating layer, wrapped around the first shielding conductor structure; as well as A first metal conductor is led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

9. A current-carrying line comprising: a first current carrying conductor; a first insulating layer, wrapping the first current-carrying conductor; a first shielded conductor structure, used to detect leakage current from the first current-carrying conductor, the first shielded conductor structure comprising a first shielding layer wrapping the first insulating layer, a second shielding layer wrapping the first shielding layer, and a first conductor located between the first shielding layer and the second shielding layer, the first conductor being used to transmit an electrical signal on the first shielded conductor structure to the outside of the current-carrying line; as well as The second insulating layer is wrapped around the first shielding conductor structure.

10. The current-carrying line according to claim 9, wherein: The first shielding conductor structure includes a first end close to the input end of the first current-carrying conductor, a second end close to the output end of the first current-carrying conductor, and a third end located between the first end and the second end. The current-carrying line also includes a first metal conductor leading out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

11. The current-carrying line according to claim 10, wherein: The first metal conductor is provided with an insulating sheath on its exterior.

12. The current-carrying line according to any one of claims 9 to 11, wherein: The first shielding layer is made of single-sided conductive flexible material, the insulating surface of the first shielding layer faces inward and contacts the outer surface of the first insulating layer, and the conductive surface of the first shielding layer faces outward and contacts the first conductor and the second shielding layer; the second shielding layer is made of a plurality of conductors woven into a mesh to wrap the first shielding layer.

13. The current-carrying line according to any one of claims 9 to 12, wherein: The first shielding layer wraps the first insulating layer in a manner of weaving a plurality of conductors into a mesh; the second shielding layer uses a single-sided conductive flexible material, the conductive surface of the second shielding layer faces inward and contacts the first conductor and the first shielding layer, and the insulating surface of the second shielding layer faces outward and contacts the inner surface of the second insulating layer.

14. The current-carrying wire according to any one of claims 1 to 7 and 9 to 13, wherein: The first conductor is a single-strand wire or a plurality of strands of wire; the first conductor is wrapped around the outside of the first insulating layer in a spiral winding manner, or is arranged outside the first insulating layer in parallel along the axial direction of the first current-carrying conductor.

15. The current-carrying line according to any one of claims 1 to 13, wherein: The second insulating layer is a flexible insulating film material and is wound around the outside of the first shielding conductor structure or wrapped around the first shielding conductor structure in parallel along the axis direction of the first current-carrying conductor; or, The second insulating layer is an injection-molded insulating outer skin.

16. A power cord, comprising: a first current-carrying line, the first current-carrying line comprising a first current-carrying conductor, a first insulating layer wrapping the first current-carrying conductor, and a first shielding conductor structure, the first shielding conductor structure being used to detect leakage current from the first current-carrying conductor, the first shielding conductor structure comprising a first shielding layer wrapping the first insulating layer; the first shielding conductor structure comprising a first end close to an input end of the power line, a second end close to an output end of the power line, and a third end located between the first end and the second end; a second current-carrying line, the second current-carrying line comprising a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shielding conductor structure, the second shielding conductor structure being used to detect leakage current from the second current-carrying conductor, the second shielding conductor structure comprising a third shielding layer wrapping the third insulating layer; the second shielding conductor structure comprising a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end; as well as a fifth insulating layer, wrapping the first current-carrying wire and the second current-carrying wire; Wherein: the first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other; and The first current-carrying line and the second current-carrying line also satisfy any one of the following four conditions: Case 1: the first current-carrying line further includes a first metal conductor extending from the third end, and the first metal conductor is connected to the sixth end; Case 2: the second current-carrying line further includes a second metal conductor extending from the sixth end, and the second metal conductor is connected to the third end; Case 3: the first current-carrying line further includes a first metal conductor led out from the third end, the second current-carrying line further includes a second metal conductor led out from the sixth end, and the first metal conductor is connected to the second metal conductor; Case 4: The power line is further provided with a third metal conductor, and two ends of the third metal conductor are respectively connected to the third end and the sixth end.

17. A power cord, comprising: a first current-carrying line, the first current-carrying line comprising a first current-carrying conductor, a first insulating layer wrapping the first current-carrying conductor, and a first shielding conductor structure, the first shielding conductor structure being used to detect leakage current from the first current-carrying conductor, the first shielding conductor structure comprising a first shielding layer wrapping the first insulating layer and a first conductor closely attached to the first shielding layer, the first conductor being used to transmit an electrical signal on the first shielding conductor structure to the outside of the current-carrying line; The second current-carrying line comprises a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shielding conductor structure, wherein the second shielding conductor structure is used to detect leakage current from the second current-carrying conductor, and the second shielding conductor structure comprises a third shielding layer wrapping the third insulating layer and a second conductor close to the third shielding layer, wherein the second conductor is used to transmit the second The electrical signal on the shielding conductor structure is transmitted to the outside of the current-carrying line; as well as a fifth insulating layer, wrapping the first current-carrying wire and the second current-carrying wire; Wherein: the first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other.

18. The power cord according to claim 17, wherein: The first current-carrying line further includes a second insulating layer wrapped around the first shielding conductor structure, and / or the second current-carrying line further includes a fourth insulating layer wrapped around the second shielding conductor structure.

19. The power cord according to claim 17 or 18, wherein: The interior of the fifth insulating layer except for the first current-carrying line and the second current-carrying line is filled with insulating material.

20. The power cord according to claim 18 or 19, wherein: The first shielding conductor structure comprises a first end close to the input end of the power line, a second end close to the output end of the power line, and a third end located between the first end and the second end; the second shielding conductor structure comprises a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end; The first current-carrying line and the second current-carrying line satisfy any one of the following four conditions: Case 1: the first current-carrying line further includes a first metal conductor extending from the third end, and the first metal conductor is connected to the sixth end; Case 2: the second current-carrying line further includes a second metal conductor extending from the sixth end, and the second metal conductor is connected to the third end; Case 3: the first current-carrying line further includes a first metal conductor led out from the third end, the second current-carrying line further includes a second metal conductor led out from the sixth end, and the first metal conductor is connected to the second metal conductor; Case 4: The power line is further provided with a third metal conductor, and two ends of the third metal conductor are respectively connected to the third end and the sixth end.

21. The power cord according to claim 20, wherein: When the second insulating layer exists, the second insulating layer is provided with a first opening for the first metal conductor to pass through; when the fourth insulating layer exists, the fourth insulating layer is provided with a second opening for the second metal conductor to pass through.

22. The power cord according to claim 20 or 21, wherein: The outside of the first metal conductor and the outside of the second metal conductor are both provided with an insulating sheath.

23. The power cord according to any one of claims 20 to 22, wherein: In the case one, the first metal conductor is welded to the sixth end; in the case two, the second metal conductor is welded to the third end; in the case three, the first metal conductor and the second metal conductor are welded at a position between the third end and the sixth end to achieve electrical connection; in the case four, one end of the third metal conductor is welded to the third end, and the other end is welded to the sixth end.

24. The power cord according to any one of claims 20 to 23, wherein: The first metal conductor and the second metal conductor extend to a position close to the input end or to a position close to the output end to achieve electrical connection.

25. The power cord according to any one of claims 20 to 24, wherein: The first conductor and the second conductor are multiple strands of wire. The first metal conductor is obtained by leading out several strands of wire in the first conductor from the third end. The second metal conductor is obtained by leading out several strands of wire in the second conductor from the sixth end.

26. The power cord according to any one of claims 20 to 25, wherein: The first shielding layer wraps the first insulating layer in a manner of weaving a plurality of conductors into a mesh, the third shielding layer wraps the third insulating layer in a manner of weaving a plurality of conductors into a mesh, the first metal conductor is obtained by leading out from the third end by several conductors in the first shielding layer, and the second metal conductor is obtained by leading out from the sixth end by several conductors in the third shielding layer.

27. The power cord according to any one of claims 17 to 26, wherein: The third shielding layer is made of a single-sided conductive flexible material; the third shielding layer is wrapped around the third insulating layer in a spiral winding manner, or is wrapped around the third insulating layer in parallel along the axial direction of the second current-carrying conductor.

28. The power cord according to any one of claims 17 to 27, wherein: The third shielding layer wraps the third insulating layer in a manner of weaving a plurality of conductors into a mesh.

29. The power cord according to any one of claims 17 to 28, wherein: The third shielding layer includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple conductors.

30. The power cord according to any one of claims 20 to 29, wherein: The second conductor is located between the third insulating layer and the third shielding layer, or between the third shielding layer and the fourth insulating layer when the fourth insulating layer exists.

31. The power cord according to any one of claims 17 to 30, wherein: The second shielding conductor structure further includes a fourth shielding layer wrapping the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

32. The power cord according to claim 31, wherein The third shielding layer is made of single-sided conductive flexible material, the insulating surface of the third shielding layer faces inward and contacts the outer surface of the third insulating layer, and the conductive surface of the third shielding layer faces outward and contacts the second conductor and the fourth shielding layer; the fourth shielding layer wraps the third shielding layer in a manner of weaving multiple conductors into a mesh.

33. The power cord according to claim 31 or 32, wherein: The third shielding layer wraps the third insulating layer in a manner of weaving a plurality of conductors into a mesh; the fourth shielding layer adopts a single-sided conductive flexible material, and the conductive surface of the fourth shielding layer faces inward and contacts the second conductor and the third shielding layer; when the fourth insulating layer exists, the insulating surface of the fourth shielding layer faces outward and contacts the inner surface of the fourth insulating layer.

34. The power cord according to any one of claims 17 to 33, wherein: The second conductor is wrapped around the outside of the third insulating layer in a spiral winding manner, or is arranged outside the third insulating layer in parallel along the axial direction of the second current-carrying conductor.

35. A power cord according to any one of claims 18 to 34, wherein: The fourth insulating layer is made of a flexible insulating film material and is wound around the outside of the second shielding conductor structure or wrapped around the second shielding conductor structure in parallel along the axis direction of the second current-carrying conductor; or, The fourth insulating layer is an injection-molded insulating outer skin.

36. The power cord according to any one of claims 20 to 35, wherein: The power line also includes a first return line and a second return line located inside the fifth insulating layer; an end of the first return line close to the output end is connected to the second end; an end of the second return line close to the output end is connected to the fifth end.

37. The power cord of claim 36, wherein: The first shielding conductor structure also includes a second shielding layer wrapping the first shielding layer and the first conductor, and the first conductor is located between the first shielding layer and the second shielding layer; the second shielding conductor structure also includes a fourth shielding layer wrapping the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

38. The power cord of claim 37, wherein: The first shielding layer is made of a single-sided conductive flexible material, the insulating surface of the first shielding layer faces inward and contacts the outer surface of the first insulating layer, and the conductive surface of the first shielding layer faces outward and contacts the first conductor and the second shielding layer; the second shielding layer is made of a plurality of conductors woven into a mesh to wrap the first shielding layer; the third shielding layer is made of a single-sided conductive flexible material, the insulating surface of the third shielding layer faces inward and contacts the outer surface of the third insulating layer, and the conductive surface of the third shielding layer faces outward and contacts the second conductor and the fourth shielding layer; the fourth shielding layer is made of a plurality of conductors woven into a mesh to wrap the third shielding layer.

39. The power cord according to claim 37 or 38, wherein: The first return line is located outside the first current-carrying line, or between the second insulating layer and the first shielding conductor structure, or inside the first shielding conductor structure, or between the first shielding conductor structure and the first insulating layer.

40. The power cord according to any one of claims 37 to 39, wherein: The second return line is located outside the second current-carrying line, or between the fourth insulating layer and the second shielded conductor structure, or inside the second shielded conductor structure, or between the second shielded conductor structure and the third insulating layer.

41. The power cord according to any one of claims 37 to 40, wherein: One end of the first shielding layer close to the output end, one end of the first conductor close to the output end, or one end of the second shielding layer close to the output end serves as the second end and is connected to one end of the first return line close to the output end.

42. A power cord according to any one of claims 37 to 41, wherein: One end of the third shielding layer close to the output end, one end of the second conductor close to the output end, or one end of the fourth shielding layer close to the output end serves as the fifth end and is connected to one end of the second return line close to the output end.

43. A power cord according to any one of claims 36 to 42, wherein: The first return line and the second return line are conductive wires with insulating sheaths.

44. An electrical connection device, comprising a housing, a detection and protection device arranged inside the housing, and a power cord according to any one of claims 20 to 43, wherein: The first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell, and the third end and the sixth end are located at the connection between the power cord and the shell.

45. An electrical connection device, comprising a housing, a detection and protection device arranged inside the housing, and a power cord according to any one of claims 20 to 43, wherein: The first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell, the output end of the power cord is used to connect to a load device, and the third end and the sixth end are located at the connection between the power cord and the load device.

46. ​​An electrical connection device, comprising a housing, a detection and protection device arranged inside the housing, and a power cord according to any one of claims 20 to 43, wherein: The first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device, the first end and the fourth end are located inside the shell, the output end of the power cord is used to connect to a load device, and the third end and the sixth end are located between the shell and the load device.

47. An electrical connection device according to any one of claims 44 to 46, wherein: A wire clip for fixing the power wire is provided at the connection between the power wire and the housing.

48. An electrical connection device according to any one of claims 44 to 47, wherein: The detection and protection device comprises: a switch module, used to control the power connection between the input end and the output end of the power line; and A driving module is respectively connected to the first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, the fifth end, and the switch module, and is used to control the switch module to disconnect the power connection when the first shielding conductor structure detects a leakage current or an open circuit and / or when the second shielding conductor structure detects a leakage current or an open circuit.

49. An electrical device, comprising a load device and the electrical connection device according to any one of claims 44 to 48, wherein the output end of the power line is connected to the load device.

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