Power line, electric connection equipment and electric equipment

Abstract

The invention discloses a power line, electric connection equipment and electric equipment, a first shielding conductor structure is wrapped outside a first current-carrying wire of the power line, a second shielding conductor structure is wrapped outside a second current-carrying wire of the power line, and a first detection segment is formed by a part, between a first end and a third end, of the first shielding conductor structure. The second detection section is formed by the part, located between the third end and the second end, of the first shielding conductor structure; the third detection section is formed by the part, located between the fourth end and the sixth end, of the second shielding conductor structure; the fourth detection section is formed by the part, located between the sixth end and the fifth end, of the second shielding conductor structure; and the fifth detection section is composed of a jumper wire located between the third end and the sixth end, the five detection sections are matched with the detection protection device, whether leakage current or open circuit occurs at different positions of the power line can be detected, and therefore the safety of the electric equipment is improved.

Description

[0001] This application claims priority to the Chinese patent applications filed on August 31, 2023: application number "202311122754X", application name "Power cord, detection and protection device for power cord, electrical connection equipment and electrical equipment", application number "2023223725448", application name "Power cord, detection and protection device for power cord, electrical connection equipment and electrical equipment", all of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the technical field of electronic circuits, and in particular to a power cord, an electrical connection device, and an electrical device. Background Art

[0003] Leakage current detection circuit breaker Lkg iruit ttor Intrruptr, LI is a power connection device for electrical appliances. It can detect the leakage current of the power line group through the leakage current detection line, and cut off the power connection of the appliance when a certain leakage current is detected to ensure safe use.

[0004] In existing leakage current detection circuit breakers, shielded wires are usually used to form leakage current detection lines. When the leakage current detection line of the live wire or the neutral wire in the power line is broken, the appliance can still output power. At this time, the appliance may have a safety hazard in electricity use, but the leakage current detection circuit breaker of the related technology cannot reflect the situation of the leakage current detection line. Summary of the invention

[0005] The embodiments of the present application provide a power cord, an electrical connection device, and an electrical device that can perfectly detect leakage current and open circuit conditions in a shielded conductor structure.

[0006] In a first aspect, an embodiment of the present application provides a power line, including a first current-carrying line and a second current-carrying line, wherein the power line is close to the input end for connecting to a detection protection device, and close to the output end for connecting to a load device, and the power line further includes:

[0007] a first shielding conductor structure, covering the first current-carrying line, the first shielding conductor structure comprising a first end close to the input end, a second end close to the output end, and a third end located between the first end and the second end;

[0008] a second shielding conductor structure, covering the second current-carrying line, 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;

[0009] A first wire, used to connect the first end and the detection and protection device;

[0010] A second wire, used to connect the fourth end and the detection protection device;

[0011] A first return line, used to connect the second end and the detection protection device;

[0012] A second return line, used to connect the fifth end and the detection protection device;

[0013] A jumper wire is used to connect the third end and the sixth end.

[0014] In some embodiments, the first shielded conductor structure between the first end and the third end constitutes a first detection segment, the first shielded conductor structure between the third end and the second end constitutes a second detection segment, the second shielded conductor structure between the fourth end and the sixth end constitutes a third detection segment, the second shielded conductor structure between the sixth end and the fifth end constitutes a fourth detection segment, and the third end and the sixth end constitute a fifth detection segment through the jumper wire.

[0015] In some embodiments, the number of the jumpers is N groups, there are N third ends between the first end and the second end, and there are N sixth ends between the fourth end and the fifth end to form N fifth detection segments, where N is a positive integer greater than 1.

[0016] In some embodiments, the jumper wire includes a first metal conductor led out from the third end and a second metal conductor led out from the sixth end, and the first metal conductor is connected to the second metal conductor;

[0017] Alternatively, the jumper wire includes a first metal conductor extending from the third end, and the first metal conductor is connected to the sixth end;

[0018] Alternatively, the jumper includes a second metal conductor extending from the sixth end, and the first metal conductor is connected to the third end.

[0019] In some embodiments, the first shielding conductor structure includes a first shielding component covering the first current-carrying line, the second shielding conductor structure includes a second shielding component covering the second current-carrying line, at least a portion of the first shielding component is pulled out at the third end as the first metal conductor, and at least a portion of the second shielding component is pulled out at the sixth end as the second metal conductor.

[0020] In some embodiments, the first shielding assembly includes a first shielding layer and a second shielding layer, the first shielding layer wraps the second shielding layer, the second shielding assembly includes a third shielding layer and a fourth shielding layer, the third shielding layer wraps the fourth shielding layer; a portion of the first shielding layer is led out at the third end as the first metal conductor, and a portion of the third shielding layer is led out at the sixth end as the second metal conductor.

[0021] In some embodiments, the first shielded conductor structure includes a fifth conductor, the fifth conductor is led out from a first end of the first shielded conductor structure to form the first conductor, and the second shielded conductor structure includes a sixth conductor, the sixth conductor is led out from a fourth end of the second shielded conductor structure to form the second conductor;

[0022] At least one of the first return line and the fifth conducting line is disposed between the first shielding layer and the second shielding layer; and at least one of the second return line and the sixth conducting line is disposed between the third shielding layer and the fourth shielding layer.

[0023] In some embodiments, the first shielding component is a fifth shielding layer, the second shielding component is a sixth shielding layer, a portion of the fifth shielding layer is led out at the third end as the first metal conductor, and a portion of the sixth shielding layer is led out at the sixth end as the second metal conductor.

[0024] In some embodiments, the first shielded conductor structure includes a third wire, and the second shielded conductor structure includes a fourth wire, the third wire extends from the first end to the second end, and the fourth wire extends from the fourth end to the fifth end, at least a portion of the third wire is extracted at the third end as the first metal conductor, and at least a portion of the fourth wire is extracted at the sixth end as the second metal conductor.

[0025] In some embodiments, the jumper wire is a third metal conductor, one end of the third metal conductor is connected to the third end, and the other end of the third metal conductor is connected to the sixth end.

[0026] In some embodiments, the first shielding conductor structure includes a fifth conductor, which is led out from the first end of the first shielding conductor structure to form the first conductor, and the second shielding conductor structure includes a sixth conductor, which is led out from the fourth end of the second shielding conductor structure to form the second conductor.

[0027] In some embodiments, the first shielding conductor structure includes a first shielding component covering the first current-carrying line, the second shielding conductor structure includes a second shielding component covering the second current-carrying line, the fifth conductor is in conductive contact with the first shielding component, and the sixth conductor is in conductive contact with the second shielding component.

[0028] In some embodiments, the first shielding assembly includes a first shielding layer and a second shielding layer, the first shielding layer wraps the second shielding layer, the second shielding assembly includes a third shielding layer and a fourth shielding layer, the third shielding layer wraps the fourth shielding layer;

[0029] At least one of the first return line and the fifth conducting line is disposed between the first shielding layer and the second shielding layer; and at least one of the second return line and the sixth conducting line is disposed between the third shielding layer and the fourth shielding layer.

[0030] In some embodiments, the first return line and the second return line are wrapped with an insulating sheath; the first return line is connected to the first shielding layer, the second shielding layer or the fifth conductor near the output end, and the second return line is connected to the third shielding layer, the fourth shielding layer or the sixth conductor near the output end.

[0031] In some embodiments, the first return line is obtained by wrapping a portion of the fifth conductive wire with an insulating sheath, and / or the second return line is obtained by wrapping a portion of the sixth conductive wire with an insulating sheath.

[0032] In some embodiments, the first shielding layer, the second shielding layer, the third shielding layer or the fourth shielding layer is one of a metal material, a semiconductor material and a conductive composite material, and the shape of the first shielding layer, the second shielding layer, the third shielding layer or the fourth shielding layer is one of a ring shape, a mesh shape, and a spiral shape.

[0033] In some embodiments, the first shielding layer and the third shielding layer are copper meshes, and the second shielding layer and the fourth shielding layer are aluminum foils.

[0034] In some embodiments, the first shielding component further includes a first covering film, which wraps the first shielding layer; the second shielding component further includes a second covering film, which wraps the third shielding layer.

[0035] In some embodiments, the outer side of the first covering film is an insulator, and the inner side is a conductor to wrap the first shielding layer; the outer side of the second covering film is an insulator, and the inner side is a conductor to wrap the third shielding layer.

[0036] In some embodiments, the first current-carrying line is wrapped by a first insulating layer, the first shielding conductor structure wraps the first insulating layer, the second current-carrying line is wrapped by a second insulating layer, and the second shielding conductor structure wraps the second insulating layer.

[0037] In some embodiments, the outer side of the first shielding conductor structure is wrapped with a third insulation layer, and / or the outer side of the second shielding conductor structure is wrapped with a fourth insulation layer, and the power cord also includes an outer insulation layer, which wraps the third insulation layer and / or the fourth insulation layer.

[0038] In some embodiments, a filling space is reserved between the outer insulating layer and the third insulating layer and the fourth insulating layer, and the first return line and the second return line are arranged in the filling space.

[0039] In a second 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 the power cord described in the first aspect, wherein 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.

[0040] 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 the power cord described in the first aspect, wherein 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 load device.

[0041] In a fourth 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 the power cord described in the first aspect, wherein the first end and the fourth end are located inside the shell, and the third end and the sixth end are located between the shell and the load device.

[0042] In some embodiments, the detection protection device includes:

[0043] A switch module, used to control the power connection between the input end and the output end of the power line;

[0044] A driving module is connected to the first end through the first wire, to the second end through the first return wire, to the fourth end through the second wire, and to the fifth end through the second return wire. The driving module is used to control the switch module to disconnect the power connection between the input end and the output end of the power line when a leakage current is detected or an open circuit occurs in the first shielded conductor structure and / or the second shielded conductor structure.

[0045] In a fifth aspect, an embodiment of the present application provides an electrical device, comprising a load device and the electrical connection device described in the second aspect, the third aspect or the fourth aspect, wherein the output end of the power line is connected to the load device.

[0046] The power cord, electrical connection device and electrical equipment of the embodiments of the present application have at least the following beneficial effects: the power cord of the embodiments of the present application is provided with a first shielding conductor structure and a second shielding conductor structure, which respectively wrap the first current-carrying wire and the second current-carrying wire, the first shielding conductor structure has a first end, a third end and a second end in sequence from the input end to the output end, the second shielding conductor structure has a fourth end, a sixth end and a fifth end in sequence from the input end to the output end, wherein the first end is connected to the detection protection device through the first wire, the fourth end is connected to the detection protection device through the second wire, the second end is connected to the detection protection device through the first return wire, the fifth end is connected to the detection protection device through the second return wire, and a first shielding conductor structure is provided between the third end and the sixth end. The jumper wire can be divided into five detection segments, namely a first detection segment consisting of a portion of the first shielded conductor structure between the first end and the third end, a second detection segment consisting of a portion of the first shielded conductor structure between the third end and the second end, a third detection segment consisting of a portion of the second shielded conductor structure between the fourth end and the sixth end, a fourth detection segment consisting of a portion of the second shielded conductor structure between the sixth end and the fifth end, and a fifth detection segment consisting of the jumper wire between the third end and the sixth end. By using these five detection segments in conjunction with the detection protection device, it is possible to detect whether leakage current or open circuit occurs at different positions of the power line, thereby improving the safety of electrical equipment.

[0047] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a schematic diagram of the connection relationship between the first shielding conductor structure and the second shielding conductor structure and the detection and protection device provided in an embodiment of the present application;

[0049] Figure 2 is a schematic diagram of a fifth detection segment having N segments between a first shielding conductor structure and a second shielding conductor structure provided by an embodiment of the present application;

[0050] Figure 3a is a schematic diagram of a connection between a first metal conductor and a second metal conductor provided in an embodiment of the present application;

[0051] Figure 3bis a schematic diagram of a first metal conductor of a jumper provided by an embodiment of the present application being connected to a sixth end;

[0052] Figure 3c is a schematic diagram of a second metal conductor of a jumper provided by an embodiment of the present application being connected to a third end;

[0053] Figure 3d It is a schematic diagram of a jumper provided in an embodiment of the present application connecting a third end and a sixth end with an additional wire;

[0054] Figure 4a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of Example 1 provided in an embodiment of the present application;

[0055] Figure 4b is a cross-sectional view of the fifth detection segment of Example 1 provided in an embodiment of the present application;

[0056] Figure 5a A cross-sectional view of the first detection segment, the second detection segment, the third detection segment, and the fourth detection segment of Example 2 provided in an embodiment of the present application;

[0057] Figure 5b is a cross-sectional view of the fifth detection segment of Example 2 provided in an embodiment of the present application;

[0058] Figure 6a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of Example 3 provided in an embodiment of the present application;

[0059] Figure 6b is a cross-sectional view of the fifth detection segment of Example 3 provided in an embodiment of the present application;

[0060] Figure 7a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of Example 3 provided in an embodiment of the present application;

[0061] Figure 7b is a cross-sectional view of the fifth detection segment of Example 3 provided in an embodiment of the present application;

[0062] Figure 8a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of Example 3 provided in an embodiment of the present application;

[0063] Figure 8b is a cross-sectional view of the fifth detection segment of Example 3 provided in an embodiment of the present application;

[0064] Figure 9a is a cross-sectional view of a first detection segment, a second detection segment, a third detection segment, and a fourth detection segment of Example 3 provided in an embodiment of the present application;

[0065] Figure 9b is a cross-sectional view of the fifth detection segment of Example 3 provided in an embodiment of the present application;

[0066] Fig.10a is a cross-sectional view of the first detection segment and the third detection segment of Example 4 provided in an embodiment of the present application;

[0067] Fig.10b is a cross-sectional view of the second detection segment and the fourth detection segment of Example 4 provided in an embodiment of the present application;

[0068] Fig.10c is a cross-sectional view of the fifth detection segment of Example 4 provided in an embodiment of the present application;

[0069] Fig.11 It is a schematic diagram of the shell structure of the electrical connection device provided in an embodiment of the present application.

[0070] Description of the drawings: Detection protection device 900, housing 910, power cord 920

[0071] first current-carrying line 110, first shielding conductor structure 120, first end a, second end b, third end c, third wire 121, fifth wire 122, first shielding layer 123, second shielding layer 124, fifth shielding layer 125

[0072] The first conductive line 130 , the first return line 140 , the first insulating layer 150 , and the third insulating layer 160

[0073] second current-carrying line 210, second shielding conductor structure 220, fourth end d, fifth end e, sixth end f, fourth wire 221, sixth wire 222, third shielding layer 223, fourth shielding layer 224, sixth shielding layer 225

[0074] The second conductive line 230 , the second return line 240 , the second insulating layer 250 , and the fourth insulating layer 260

[0075] Jumper 300, first metal conductor 310, second metal conductor 320, third metal conductor 330

[0076] The third current-carrying line 400, the outer insulating layer 500 DETAILED DESCRIPTION

[0077] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. In addition, the characteristics, operations or features described in the specification can be combined in any appropriate manner to form various implementation methods. At the same time, the steps or actions in the method description can also be replaced or adjusted in order in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the accompanying drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary sequence, unless otherwise specified that a certain sequence must be followed.

[0078] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot 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.

[0079] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0080] The leakage current detection circuit breaker, or LCDI, uses a shielded wire to cover the live wire or neutral wire, and detects the leakage current on the live wire or neutral wire through the shielded wire; if the live wire or neutral wire is damaged and leakage current is transmitted to the shielded wire, the leakage current detection circuit breaker can be triggered to disconnect the power connection of the power cord. However, when the shielded wire is broken, an open circuit will occur between the shielded wire and the detection circuit of the leakage current detection circuit breaker, and the leakage current cannot be detected through the shielded wire, which poses a hidden danger to the power safety of electrical appliances.

[0081] Based on this, an embodiment of the present application provides a power cord, an electrical connection device and an electrical device, wherein the power cord is provided with a first shielding conductor structure 120 and a second shielding conductor structure 220, which respectively wrap the first current-carrying line 110 and the second current-carrying line 210, the first shielding conductor structure 120 has a first end a, a third end c and a second end b from the input end to the output end, and the second shielding conductor structure 220 has a fourth end d, a sixth end f and a fifth end e from the input end to the output end, wherein the first end a is connected to the detection protection device 900 through the first wire 130, the fourth end d is connected to the detection protection device 900 through the second wire 230, the second end b is connected to the detection protection device 900 through the first return line 140, the fifth end e is connected to the detection protection device 900 through the second return line 240, and at the third end c and the sixth end f, the detection protection device 900 is connected to the detection protection device 900 through the second return line 240. A jumper wire 300 is arranged between the six terminals f, thereby dividing the device into five detection segments, which are a first detection segment consisting of a portion of the first shielded conductor structure 120 between the first terminal a and the third terminal c, a second detection segment consisting of a portion of the first shielded conductor structure 120 between the third terminal c and the second terminal b, a third detection segment consisting of a portion of the second shielded conductor structure 220 between the fourth terminal d and the sixth terminal f, a fourth detection segment consisting of a portion of the second shielded conductor structure 220 between the sixth terminal f and the fifth terminal e, and a fifth detection segment consisting of the jumper wire 300 between the third terminal c and the sixth terminal f. By using these five detection segments in conjunction with the detection protection device 900, it is possible to detect whether leakage current or open circuit occurs at different positions of the power line, thereby improving the safety of electrical equipment.

[0082] The following is a description of the power cord, electrical connection equipment and electrical equipment in conjunction with the accompanying drawings:

[0083] Reference Figure 1 As shown, an embodiment of the present application provides a power cord, wherein the input end of the power cord is used to connect to a detection and protection device 900, and the output end of the power cord is used to connect to a load device, and the power cord includes a first current-carrying line 110, a first shielded conductor structure 120, a first wire 130, a first return line 140, a second current-carrying line 210, a second shielded conductor structure 220, a second wire 230, a second return line 240 and a jumper wire 300.

[0084] The first shielding conductor structure 120 covers the first current-carrying line 110, and the first shielding conductor structure 120 includes a first end a close to the input end of the power line, a second end b close to the output end of the power line, and a third end c located between the first end a and the second end b; the second shielding conductor structure 220 covers the second current-carrying line 210, and the second shielding conductor structure 220 includes a fourth end d close to the input end of the power line, a fifth end e close to the output end of the power line, and a sixth end f located between the fourth end d and the fifth end e.

[0085] It can be understood that the first current-carrying line 110 and the second current-carrying line 210 are used to provide working current for the load device; the first shielded conductor structure 120 is coated on the outside of the first current-carrying line 110, and the second shielded conductor structure 220 is coated on the outside of the second current-carrying line 210, which can respectively detect the leakage that may occur on the first current-carrying line 110 and the second current-carrying line 210, and transmit a signal to the detection and protection device 900 to cut off the power supply, avoid the accidental occurrence of electric shock to personnel, and improve safety. In addition, when the power line supplies power to electrical equipment using two-phase alternating current, it can be one of the following two situations: the first current-carrying line 110 is the live wire L, and the second current-carrying line 120 is the neutral wire N; the first current-carrying line 110 is the neutral wire N, and the second current-carrying line 120 is the live wire L. When the power line supplies power to electrical equipment using three-phase alternating current, one of the following three situations can be true: the first current-carrying line 110 is the live wire L1, and the second current-carrying line 120 is the neutral wire N; the first current-carrying line 110 is the neutral wire N, and the second current-carrying line 120 is the live wire L1; the first current-carrying line 110 is the live wire L1, and the second current-carrying line 120 is the live wire L2.

[0086] The first conductor 130 is used to connect the first end a and the detection and protection device 900; the second conductor 230 is used to connect the fourth end d and the detection and protection device 900; the first return line 140 is used to connect the second end b and the detection and protection device 900; the second return line 240 is used to connect the fifth end e and the detection and protection device 900; the jumper wire 300 is used to connect the third end c and the sixth end f.

[0087] By using a jumper wire 300 to connect the third end c in the middle of the first shielded conductor structure 120 and the sixth end f in the second shielded conductor structure 220, there is a connection point between the shielded conductor structures of the first current-carrying line 110 and the second current-carrying line 120, and the two shielded conductor structures are no longer independently separated, so that the first shielded conductor structure 120 between the first end a and the third end c constitutes a first detection segment, the first shielded conductor structure 120 between the third end c and the second end b constitutes a second detection segment, the second shielded conductor structure 220 between the fourth end d and the sixth end f constitutes a third detection segment, the second shielded conductor structure 220 between the sixth end f and the fifth end e constitutes a fourth detection segment, and the third end c and the sixth end f constitute a fifth detection segment through the jumper wire 300.

[0088] The first end a, the second end b, the fourth end d, and the fifth end e are then connected to the detection protection device 900 respectively, so that the detection protection device 900 can simultaneously perform open circuit detection on multiple different detection paths, for example, a detection path from the first wire 130 to the first end a of the first shielded conductor structure 120, then to the third end c of the first shielded conductor structure 120, then through the jumper wire 300 to the sixth end f of the second shielded conductor structure 220, then to the fourth end d of the second shielded conductor structure 220, and finally to the second wire 230; a detection path from the first wire 130 to the first end a of the first shielded conductor structure 120, then to the third end c of the first shielded conductor structure 120, then through the jumper wire 300 to the sixth end f of the second shielded conductor structure 220, and then to The detection path is from the fifth end e of the second shielded conductor structure 220 to the second return line 240; from the first return line 140 to the second end b of the first shielded conductor structure 120, then to the third end c of the first shielded conductor structure 120, then through the jumper line 300 to the sixth end f of the second shielded conductor structure 220, then to the fourth end d of the second shielded conductor structure 220, and finally to the second conductive line 230; from the first return line 140 to the second end b of the first shielded conductor structure 120, then to the third end c of the first shielded conductor structure 120, then through the jumper line 300 to the sixth end f of the second shielded conductor structure 220, then to the fifth end e of the second shielded conductor structure 220, and finally to the second return line 240.

[0089] It can be understood that in the power cord of the present embodiment, the multiple detection segments formed by the first shielding conductor structure 120 and the second shielding conductor structure 220 can be combined to construct a shielding network of multiple different detection paths, which greatly enriches the feasibility and flexibility of the power cord's leakage detection and shielding structure open circuit detection, and is conducive to improving the power supply safety of the power cord.

[0090] Reference Figure 2 As shown, in another embodiment of the present application, the number of jumpers 300 is N groups, there are N third terminals c between the first terminal a and the second terminal b, and there are N sixth terminals f between the fourth terminal d and the fifth terminal e, to form N fifth detection segments, where N is a positive integer greater than 1.

[0091] Compared to Figure 1In the embodiment shown, multiple groups of jumper wires 300 are set up in this embodiment so that there are multiple connection points between the shielding conductor structures of the first current-carrying line 110 and the second current-carrying line 120, thereby forming more detection segments, such as the detection segment formed between two adjacent third ends c on the first shielding conductor structure 120, and the detection segment formed between two adjacent sixth ends f on the second shielding conductor structure 220. More detection paths can be further combined, which greatly enriches the feasibility and flexibility of open-circuit detection of the shielding structure of the power line, which is beneficial to improving the power supply safety of the power line.

[0092] Reference Figure 3a As shown, in some embodiments of the present application, in the fifth detection segment, the jumper 300 includes a first metal conductor 310 led out from the third end c and a second metal conductor 320 led out from the sixth end f, and the first metal conductor 310 is connected to the second metal conductor 320. That is, in this embodiment, the jumper 300 is composed of two parts of metal conductors connected to achieve electrical connection between the third end c of the first shielding conductor structure 120 and the sixth end f of the second shielding conductor structure 220. It can be understood that the first metal conductor 310 can be a part of the first shielding conductor structure 120, that is, the first metal conductor 310 can be a part of the first shielding conductor structure 120 extracted from the third end c; in addition, the first metal conductor 310 can also be an additionally provided metal conductor; similarly, the second metal conductor 320 can be a part of the second shielding conductor structure 220, that is, the second metal conductor 320 can be a part of the second shielding conductor structure 220 extracted from the sixth end f; in addition, the second metal conductor 320 can also be an additionally provided metal conductor.

[0093] Reference Figure 3b As shown, in this application, it is distinguished from Figure 3a In another embodiment, in the fifth detection segment, the jumper 300 includes a first metal conductor 310 extending from the third end c, and the first metal conductor 310 is connected to the sixth end f. Figure 3a The embodiment shown, Figure 3b There is no need to provide the second metal conductor 320.

[0094] Reference Figure 3c As shown, in this application, it is distinguished from Figure 3a In another embodiment, in the fifth detection segment, the jumper 300 includes a second metal conductor 320 extending from the sixth end f, and the second metal conductor 320 is connected to the sixth end f. Figure 3a The embodiment shown, Figure 3b The first metal conductor 310 does not need to be provided.

[0095] Reference Figure 3d As shown, in this application, it is distinguished from Figure 3a In another embodiment, in the fifth detection segment, the jumper 300 includes a third metal conductor 330, and both ends of the third metal conductor 330 are respectively connected to the third end c and the sixth end f. That is, the jumper 300 uses the additionally provided third metal conductor 330, and does not use a portion extracted from the first shielding conductor structure 120 at the third end c, nor does it use a portion extracted from the second shielding conductor structure 220 at the sixth end f.

[0096] In some embodiments of the present application, the first shielding conductor structure 120 includes a first shielding component covering the first current-carrying line 110, the second shielding conductor structure 220 includes a second shielding component covering the second current-carrying line 210, at least a portion of the first shielding component is pulled out at the third end c as the first metal conductor 310, and at least a portion of the second shielding component is pulled out at the sixth end f as the second metal conductor 320.

[0097] In the jumper 300 of this embodiment, the first metal conductor 310 is formed by extracting at least a portion of the first shielding component at the third end c, and the second metal conductor 320 is formed by extracting at least a portion of the second shielding component at the sixth end f, which is equivalent to extracting a portion of the first shielding component and the second shielding component for connection to form the jumper 300. In this way, when the power cord is installed on the electrical equipment, the installer can directly extract the first shielding component wrapped in the outer layer of the first current-carrying wire 110 and the second shielding component wrapped in the outer layer of the second current-carrying wire 210 for connection, thereby reducing the difficulty of installing the jumper. Among them, the first shielding component and the second shielding component can be a single-layer shielding layer, or can be composed of multiple shielding layers, or can be a structure composed of multiple materials, which is not limited here.

[0098] Reference Figure 9b and Fig.10b As shown, in some embodiments of the present application, the first shielding component includes a first shielding layer 123 and a second shielding layer 124, and the first shielding layer 123 wraps the second shielding layer 124; the second shielding component includes a third shielding layer 223 and a fourth shielding layer 224, and the third shielding layer 223 wraps the fourth shielding layer 224; a portion of the first shielding layer 123 is led out at the third end c as the first metal conductor 310, and a portion of the third shielding layer 223 is led out at the sixth end f as the second metal conductor 320.

[0099] The jumper 300 of the present embodiment is composed of the shielding layers in the first shielding conductor structure 120 and the second shielding conductor structure 220, and a part of the shielding layers in the first shielding conductor structure 120 and the second shielding conductor structure 220 is led out as the first metal conductor 310 and the second metal conductor 320. For example, the first shielding conductor structure 120 has a first shielding layer 123 and a second shielding layer 124, and the first shielding layer 123 in the outer layer can be used to lead out as the first metal conductor 310, and at the position of the third end c, the power line can be cut to lead out a part of the first shielding layer 123 to form a first metal conductor 310 in the shape of a wire, and similarly, the second shielding conductor structure 220 has a third shielding layer 223 and a fourth shielding layer 224, and the third shielding layer 223 in the outer layer can be used to lead out as the second metal conductor 320, and at the position of the sixth end f, the power line can be cut to lead out a part of the third shielding layer 223 to form a second metal conductor 320 in the shape of a wire. In this way, a portion of the outer shielding layer is led out as the metal conductor of the jumper 300, and the inner shielding layer can maintain integrity, that is, the second shielding layer 124 and the fourth shielding layer 224 are complete and meet the shielding layer integrity detection requirements.

[0100] It can be understood that the above is to lead out the first metal conductor 310 from the first shielding layer 123 and the second metal conductor 320 from the third shielding layer 223 respectively. According to the above description, the first metal conductor 310 can be led out only from the first shielding layer 123 and the first metal conductor 310 can be connected to the sixth end f, or the second metal conductor 320 can be led out only from the third shielding layer 223 and the second metal conductor 320 can be connected to the third end c.

[0101] In some embodiments of the present application, the first shielding conductor structure 120 further includes a fifth wire 122. In the first detection segment, the fifth wire 122 extends from the first end a to the third end c and is in conductive contact with the first shielding conductor structure 120. In the second detection segment, the fifth wire 122 extends from the third end c to the second end b and is in conductive contact with the first shielding conductor structure 120.

[0102] It can be understood that, by providing a fifth wire 122 in the first shielding conductor structure 120 and connecting it to the detection protection device 900 through the first wire 130, that is, in the first shielding conductor structure 120, the fifth wire 122 serves as a carrier connected to the first wire 130 to realize electrical signal transmission, and the fifth wire 122 extends from the first end a to the second end b in the first shielding conductor structure 120, so that the first wire 130 is conductively connected to the first detection segment and the second detection segment of the first shielding conductor structure 120, so that the electrical signal changes of the first detection segment and the second detection segment of the first shielding conductor structure 120 can be conducted through the first wire 130.

[0103] The second shielding conductor structure 220 also includes a sixth conductive wire 222. In the third detection segment, the sixth conductive wire 222 extends from the fourth end d to the sixth end f and is in conductive contact with the second shielding conductor structure 220. In the fourth detection segment, the sixth conductive wire 222 extends from the sixth end f to the fifth end e and is in conductive contact with the second shielding conductor structure 220.

[0104] It can be understood that, by providing a sixth wire 222 in the second shielding conductor structure 220 and connecting to the detection protection device 900 through the second wire 230, that is, in the second shielding conductor structure 220, the sixth wire 222 serves as a carrier connected to the second wire 230 to realize electrical signal transmission, and the sixth wire 222 extends from the fourth end d to the fifth end e in the second shielding conductor structure 220, so that the second wire 230 is conductively connected to the third detection segment and the fourth detection segment in the second shielding conductor structure 220, so that the electrical signal changes of the third detection segment and the fourth detection segment of the second shielding conductor structure 220 can be conducted through the second wire 230.

[0105] In some embodiments of the present application, in the first detection segment and the second detection segment, the fifth wire 122 is arranged between the first shielding layer 123 and the second shielding layer 124; in the third detection segment and the fourth detection segment, the sixth wire 222 is arranged between the third shielding layer 223 and the fourth shielding layer 224;

[0106] Since the shielding layer is used as the jumper wire 300, the third wire 121 and the fourth wire 221 are not present in any detection segment. In this embodiment, the fifth wire 122 and the sixth wire 222 are both long wires extending along the power line 920, so the fifth wire 122 can be arranged between the first shielding layer 123 and the second shielding layer 124, and the fifth wire 122 is in conductive contact with the first shielding layer 123 and the second shielding layer 124, and the sixth wire 222 can be arranged between the third shielding layer 223 and the fourth shielding layer 224, and the sixth wire 222 is in conductive contact with the third shielding layer 223 and the fourth shielding layer 224.

[0107] Alternatively, at least one of the first return line 140 and the fifth conductive line 122 is disposed between the first shielding layer 123 and the second shielding layer 124 ; at least one of the second return line 240 and the sixth conductive line 222 is disposed between the third shielding layer 223 and the fourth shielding layer 224 .

[0108] In this example, the first return line 140 and the second return line 240 are added on the basis of the above example. The first return line 140 and the second return line 240 are wrapped with insulating skin and are insulated from each shielding layer. In this example, the first return line 140, the second return line 240, the fifth wire 122 and the sixth wire 222 are all long wires extending along the power line 920. Between the first shielding layer 123 and the second shielding layer 124, one of the first return line 140 and the fifth wire 122 can be set separately, or both can be set between the first shielding layer 123 and the second shielding layer 124. Between the third shielding layer 223 and the fourth shielding layer 224, one of the second return line 240 and the sixth wire 222 can be set separately, or both can be set between the third shielding layer 223 and the fourth shielding layer 224.

[0109] In some embodiments of the present application, the first shielding component is the fifth shielding layer 125, the second shielding component is the sixth shielding layer 225, a portion of the fifth shielding layer 125 is led out at the third end c as the first metal conductor 310, and a portion of the sixth shielding layer 225 is led out at the sixth end f as the second metal conductor 320.

[0110] In some embodiments of the present application, the first conductive line 130 extends from the detection protection device 900 to the first end a, and the second conductive line 230 extends from the detection protection device 900 to the fourth end d.

[0111] In the embodiment of the jumper wire 300 formed by using a shielding layer, the first wire 130 and the second wire 230 are both short wires, one end of the first wire 130 is connected to the detection protection device 900, and the other end is connected to the first end a, and one end of the second wire 230 is connected to the detection protection device 900, and the other end is connected to the fourth end d. The use of short wires can facilitate the detection protection device 900 and the power cord 920 to be connected separately, without removing the wire from the power cord 920 to connect the detection protection device 900.

[0112] In some embodiments of the present application, the first return line 140 and the second return line 240 are wrapped with an insulating sheath; the first return line 140 is connected to the first shielding layer 123 or the second shielding layer 124 near the output end, and the second return line 240 is connected to the third shielding layer 223 or the fourth shielding layer 224 near the output end.

[0113] In an embodiment in which the shielding layer is used to form the jumper wire 300, the first wire 130 and the second wire 230 are both short wires, the first return wire 140 extends to the output end of the power line and is connected to the second end b of the first shielding conductor structure 120. If the first shielding conductor structure is a structure of 120 multiple shielding layers, the first return wire 140 is connected to the first shielding layer 123 or the second shielding layer 124 near the output end. If the first shielding conductor structure is a structure of 120 single shielding layers, the first return wire 140 is connected to the fifth shielding layer 125 near the output end. The first return wire 140 is connected to the second end b. A conductive connection can be formed by welding, winding, etc.; similarly, the second return line 240 extends to the output end of the power line and is connected to the fifth end e of the second shielding conductor structure 220. If the second shielding conductor structure is a structure of multiple shielding layers 220, the second return line 240 is connected to the third shielding layer 223 or the fourth shielding layer 224 near the output end. If the second shielding conductor structure is a structure of single shielding layers 220, the second return line 240 is connected to the sixth shielding layer 225 near the output end. A conductive connection can be formed between the second return line 240 and the fifth end e by welding, winding, etc.

[0114] In some embodiments of the present application, the first shielding conductor structure 120 includes a third wire 121. In the first detection segment, the third wire 121 extends from the first end a to the third end c and is in conductive contact with the first shielding conductor structure 120. In the second detection segment, the third wire 121 extends from the third end c to the second end b and is in conductive contact with the first shielding conductor structure 120. At least a portion of the third wire 121 in the first detection segment and / or the second detection segment is pulled out at the third end c as the first metal conductor 310.

[0115] It can be understood that by providing a third wire 121 in the first shielding conductor structure 120, and extracting a part of the third wire 121 from the third end c as the first metal conductor 310, the first metal conductor 310 and the first shielding conductor structure 120 are integrated into a structure, which has the advantages of reliable electrical connection and not easy to loosen and fall off. In addition, the first metal conductor 310 also has the advantage of convenient molding. The first metal conductor 310 can be manufactured without complicated production steps, which is conducive to simplifying the manufacturing process and reducing production costs. In addition, the third wire 121 extends from the first end a of the first shielding conductor structure 120 close to the input end to the second end b close to the output end, so that no matter where the third end c is set on the first shielding conductor structure 120, the third wire 121 can be pulled out as the first metal conductor 310; when the third wire 121 is pulled out from the third end c as the first metal conductor 310, the part between the third end c and the first end a can be pulled out, that is, part of the third wire 121 in the first detection segment can be pulled out, and the part between the third end c and the second end b can be pulled out, that is, part of the third wire 121 in the second detection segment can be pulled out, and the part between the third end c and the first end a and the part between the third end c and the second end b can also be pulled out at the same time, that is, part of the third wire 121 in the first detection segment and part of the third wire 121 in the second detection segment can be pulled out at the same time.

[0116] In addition, the third conductive wire 121 may be cut off at the third end c, and then the portion between the third end c and the first end a may be separately drawn out, or the portion between the third end c and the second end b may be separately drawn out.

[0117] In some embodiments of the present application, the second shielding conductor structure 220 includes a fourth wire 221. In the fourth detection segment, the fourth wire 221 extends from the fourth end d to the sixth end f and is in conductive contact with the second shielding conductor structure 220. In the fifth detection segment, the fourth wire 221 extends from the sixth end f to the fifth end e and is in conductive contact with the second shielding conductor structure 220. At least a portion of the fourth wire 221 in the third detection segment and / or the fourth detection segment is extracted at the sixth end f as a second metal conductor 320.

[0118] Similarly, by providing a fourth wire 221 in the second shielding conductor structure 220, and extracting a portion of the fourth wire 221 from the sixth end f as the second metal conductor 320, the second metal conductor 320 and the second shielding conductor structure 220 are integrated into one structure, which has the advantages of reliable electrical connection and not easy to loosen and fall off. In addition, the second metal conductor 320 also has the advantage of convenient molding. The second metal conductor 320 can be manufactured without complicated production steps, which is conducive to simplifying the manufacturing process and reducing production costs. In addition, the fourth wire 221 extends from the fourth end d of the second shielding conductor structure 220 close to the input end to the fifth end e close to the output end, so that no matter where the sixth end f is set on the second shielding conductor structure 220, the fourth wire 221 can be pulled out as the second metal conductor 320; when the fourth wire 221 is pulled out from the fourth end d as the second metal conductor 320, the part between the sixth end f and the fourth end d can be pulled out, that is, part of the fourth wire 221 in the third detection segment can be pulled out, and the part between the sixth end f and the fifth end e can be pulled out, that is, part of the fourth wire 221 in the fourth detection segment can be pulled out, and the part between the sixth end f and the fourth end d and the part between the sixth end f and the fifth end e can also be pulled out at the same time, that is, part of the fourth wire 221 in the third detection segment and part of the fourth wire 221 in the fourth detection segment can be pulled out at the same time.

[0119] In addition, the fourth wire 221 may be cut off at the sixth end f, and then the portion between the sixth end f and the fourth end d may be separately drawn out, or the portion between the sixth end f and the fifth end e may be separately drawn out.

[0120] In some embodiments of the present application, the first shielding conductor structure 120 also includes a fifth conductor 122. In the first detection segment, the fifth conductor 122 extends from the first end a to the third end c and is in conductive contact with the first shielding conductor structure 120. In the second detection segment, the fifth conductor 122 extends from the third end c to the second end b and is in conductive contact with the first shielding conductor structure 120. The fifth conductor 122 is connected to the detection protection device 900 via the first conductor 130.

[0121] It can be understood that, by providing a fifth wire 122 in the first shielding conductor structure 120 and connecting it to the detection protection device 900 through the first wire 130, that is, in the first shielding conductor structure 120, the fifth wire 122 serves as a carrier connected to the first wire 130 to realize electrical signal transmission, and the fifth wire 122 extends from the first end a to the second end b in the first shielding conductor structure 120, so that the first wire 130 is conductively connected to the first detection segment and the second detection segment of the first shielding conductor structure 120, so that the electrical signal changes of the first detection segment and the second detection segment of the first shielding conductor structure 120 can be conducted through the first wire 130.

[0122] In some embodiments of the present application, the second shielding conductor structure 220 also includes a sixth wire 222. In the third detection segment, the sixth wire 222 extends from the fourth end d to the sixth end f and is in conductive contact with the second shielding conductor structure 220. In the fourth detection segment, the sixth wire 222 extends from the sixth end f to the fifth end e and is in conductive contact with the second shielding conductor structure 220. The sixth wire 222 is connected to the detection protection device 900 via the second wire 230.

[0123] It can be understood that, by providing a sixth wire 222 in the second shielding conductor structure 220 and connecting to the detection protection device 900 through the second wire 230, that is, in the second shielding conductor structure 220, the sixth wire 222 serves as a carrier connected to the second wire 230 to realize electrical signal transmission, and the sixth wire 222 extends from the fourth end d to the fifth end e in the second shielding conductor structure 220, so that the second wire 230 is conductively connected to the third detection segment and the fourth detection segment in the second shielding conductor structure 220, so that the electrical signal changes of the third detection segment and the fourth detection segment of the second shielding conductor structure 220 can be conducted through the second wire 230.

[0124] In some embodiments of the present application, the first shielding conductor structure 120 includes a first shielding component covering the first current-carrying line 110, the second shielding conductor structure 220 includes a second shielding component covering the second current-carrying line 210, at least a portion of the first shielding component is pulled out at the third end c as the first metal conductor 310, and at least a portion of the second shielding component is pulled out at the sixth end f as the second metal conductor 320.

[0125] In the jumper 300 of this embodiment, the first metal conductor 310 is formed by extracting at least a portion of the first shielding component at the third end c, and the second metal conductor 320 is formed by extracting at least a portion of the second shielding component at the sixth end f, which is equivalent to extracting a portion of the first shielding component and the second shielding component for connection to form the jumper 300. In this way, when the power cord is installed on the electrical equipment, the installer can directly extract the first shielding component wrapped in the outer layer of the first current-carrying wire 110 and the second shielding component wrapped in the outer layer of the second current-carrying wire 210 for connection, thereby reducing the difficulty of installing the jumper. Among them, the first shielding component and the second shielding component can be a single-layer shielding layer, or can be composed of multiple shielding layers, or can be a structure composed of multiple materials, which is not limited here.

[0126] Reference Figure 4a and Figure 5aAs shown, in some embodiments of the present application, the first shielding assembly includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 wraps the second shielding layer 124, the second shielding assembly includes a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 wraps the fourth shielding layer 224;

[0127] The first shielding conductor structure 120 can adopt a double-layer structure or a multi-layer structure, which includes at least a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 and the second shielding layer 124 are arranged closely together and at least one wire can be arranged between the two shielding layers, and the second shielding conductor structure 220 can also adopt a double-layer structure or a multi-layer structure, which includes at least a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 and the fourth shielding layer 224 are arranged closely together and at least one wire can be arranged between the two shielding layers. Such a double-layer shielding layer structure enables the wire to be better fixed between the two shielding layers, which is convenient for fixing the wire during the production process and also avoids the wire from loosening and shifting during transportation or installation. Different power line structures can be formed in combination with the double-layer shielding layer structure for different wires.

[0128] For example, in the first detection segment and the second detection segment, at least one of the third wire 121 and the fifth wire 122 is disposed between the first shielding layer 123 and the second shielding layer 124; in the third detection segment and the fourth detection segment, at least one of the fourth wire 221 and the sixth wire 222 is disposed between the third shielding layer 223 and the fourth shielding layer 224;

[0129] The third wire 121, the fourth wire 221, the fifth wire 122 and the sixth wire 222 are all wires without insulation. The third wire 121 and the fifth wire 122 are in conductive contact with the first shielding layer 123 and / or the second shielding layer 124, and the fourth wire 221 and the sixth wire 222 are in conductive contact with the third shielding layer 223 and / or the fourth shielding layer 224. In this example, the third wire 121, the fourth wire 221, the fifth wire 122 and the sixth wire 222 are all long wires extending along the power line 920, wherein the third wire 121 can be set alone between the first shielding layer 123 and the second shielding layer 124, the fifth wire 122 can be set alone between the first shielding layer 123 and the second shielding layer 124, or the third wire 121 and the fifth wire 122 can be set between the first shielding layer 123 and the second shielding layer 124 at the same time, the fourth wire 221 can be set alone between the third shielding layer 223 and the fourth shielding layer, the sixth wire 222 can be set alone between the third shielding layer 223 and the fourth shielding layer, or the fourth wire 221 and the sixth wire 222 can be set between the third shielding layer 223 and the fourth shielding layer at the same time.

[0130] For another example, at least one of the first return line 140, the third conductor 121 and the fifth conductor 122 is arranged between the first shielding layer 123 and the second shielding layer 124; at least one of the second return line 240, the fourth conductor 221 and the sixth conductor 222 is arranged between the third shielding layer 223 and the fourth shielding layer 224.

[0131] In this example, the first return line 140 and the second return line 240 are added on the basis of the above example. The first return line 140 and the second return line 240 are wrapped with insulating skin and are insulated from each shielding layer. In this example, the first return line 140, the second return line 240, the third wire 121, the fourth wire 221, the fifth wire 122 and the sixth wire 222 are all long wires extending along the power line 920. Between the first shielding layer 123 and the second shielding layer 124, one of the first return line 140, the third wire 121 and the fifth wire 122 can be set separately, or two of the three can be set, or all three can be set between the first shielding layer 123 and the second shielding layer 124. Between the third shielding layer 223 and the fourth shielding layer 224, one of the second return line 240, the fourth wire 221 and the sixth wire 222 can be set separately, or two of the three can be set, or all three can be set between the third shielding layer 223 and the fourth shielding layer 224.

[0132] Reference Figure 6a As shown, in some embodiments of the present application, the first shielding component is the fifth shielding layer 125, and the second shielding component is the sixth shielding layer 225; in the first detection segment and the second detection segment, the third wire 121 and the fifth wire 122 are tightly attached to the same side or different sides of the fifth shielding layer 125; in the third detection segment and the fourth detection segment, the fourth wire 221 and the sixth wire 222 are tightly attached to the same side or different sides of the sixth shielding layer 225.

[0133] The first shielding conductor structure 120 and the second shielding conductor structure 220 adopt a single-layer shielding layer structure, and the single-layer shielding layer can be a shielding layer formed by a single material, or a shielding layer that is not easily separated and is composited with multiple materials. The outer side and inner side of the fifth shielding layer 125 are conductive, so the outer side and inner side of the fifth shielding layer 125 can be closely attached to the third wire 121 and the fifth wire 122, and the outer side and inner side of the sixth shielding layer 225 are conductive, so the outer side and inner side of the sixth shielding layer 225 can be closely attached to the fourth wire 221 and the sixth wire 222.

[0134] For example, the third wire 121 and the fifth wire 122 are arranged on the outer side of the fifth shielding layer 125, or the third wire 121 and the fifth wire 122 are arranged on the inner side of the fifth shielding layer 125, or the third wire 121 and the fifth wire 122 are arranged on both sides of the fifth shielding layer 125. The fourth wire 221 and the sixth wire 222 are arranged on the outer side of the sixth shielding layer 225, or the fourth wire 221 and the sixth wire 222 are arranged on the inner side of the sixth shielding layer 225, or the fourth wire 221 and the sixth wire 222 are arranged on both sides of the sixth shielding layer 225.

[0135] In some embodiments of the present application, the first conductive line 130 extends from the detection protection device 900 to the first end a, and the second conductive line 230 extends from the detection protection device 900 to the fourth end d.

[0136] In this embodiment, the first wire 130 and the second wire 230 are both short wires, one end of the first wire 130 is connected to the detection protection device 900, and the other end is connected to the first end a, and one end of the second wire 230 is connected to the detection protection device 900, and the other end is connected to the fourth end d. The use of short wires can facilitate the detection protection device 900 and the power cord 920 to be connected separately, without removing the wire from the power cord 920 to connect the detection protection device 900.

[0137] In some embodiments of the present application, the first shielding conductor structure 120 further includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 wraps the second shielding layer 124, the second shielding conductor structure 220 further includes a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 wraps the fourth shielding layer 224;

[0138] The first shielding conductor structure 120 can adopt a double-layer structure or a multi-layer structure, which includes at least a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 and the second shielding layer 124 are arranged closely together and at least one wire can be arranged between the two shielding layers, and the second shielding conductor structure 220 can also adopt a double-layer structure or a multi-layer structure, which includes at least a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 and the fourth shielding layer 224 are arranged closely together and at least one wire can be arranged between the two shielding layers. Such a double-layer shielding layer structure enables the wire to be better fixed between the two shielding layers, which is convenient for fixing the wire during the production process and also avoids the wire from loosening and shifting during transportation or installation. Different power line structures can be formed in combination with the double-layer shielding layer structure for different wires.

[0139] For example, in the first detection segment and the second detection segment, the third wire 121 is arranged between the first shielding layer 123 and the second shielding layer 124; in the third detection segment and the fourth detection segment, the fourth wire 221 is arranged between the third shielding layer 223 and the fourth shielding layer 224;

[0140] The third wire 121 and the fourth wire 221 are both wires without insulation, the third wire 121 is in conductive contact with the first shielding layer 123 and the second shielding layer 124, and the fourth wire 221 is in conductive contact with the third shielding layer 223 and the fourth shielding layer 224. In this example, the third wire 121 and the fourth wire 221 are both long wires extending along the power line 920, wherein the third wire 121 can be disposed alone between the first shielding layer 123 and the second shielding layer 124, and the fourth wire 221 can be disposed alone between the third shielding layer 223 and the fourth shielding layer.

[0141] For another example, at least one of the first return line 140 and the third conductor 121 is disposed between the first shielding layer 123 and the second shielding layer 124 ; at least one of the second return line 240 and the fourth conductor 221 is disposed between the third shielding layer 223 and the fourth shielding layer 224 .

[0142] In this example, the first return line 140 and the second return line 240 are added on the basis of the above examples. The first return line 140 and the second return line 240 are wrapped with insulating skin and are insulated from each shielding layer. In this example, the first return line 140, the second return line 240, the third wire 121 and the fourth wire 221 are all long wires extending along the power line 920. Between the first shielding layer 123 and the second shielding layer 124, one of the first return line 140 and the third wire 121 can be set separately, or both can be set between the first shielding layer 123 and the second shielding layer 124. Between the third shielding layer 223 and the fourth shielding layer 224, one of the second return line 240 and the fourth wire 221 can be set separately, or both can be set between the third shielding layer 223 and the fourth shielding layer 224.

[0143] In some embodiments of the present application, the first shielding conductor structure 120 is the fifth shielding layer 125, and the second shielding conductor structure 220 is the sixth shielding layer 225; in the first detection segment and the second detection segment, the third wire 121 is close to the outside or inside of the fifth shielding layer 125; in the third detection segment and the fourth detection segment, the fourth wire 221 is close to the outside or inside of the sixth shielding layer 225.

[0144] The first shielding conductor structure 120 and the second shielding conductor structure 220 adopt a single-layer shielding layer structure, and the single-layer shielding layer can be a shielding layer formed of a single material, or a shielding layer that is not easily separated and is composited with multiple materials. The outer side and inner side of the fifth shielding layer 125 are conductive, so one of the outer side and inner side of the fifth shielding layer 125 is in close contact with the third wire 121, and the outer side and inner side of the sixth shielding layer 225 are conductive, so one of the outer side and inner side of the sixth shielding layer 225 is in close contact with the fourth wire 221.

[0145] For example, the third wire 121 is disposed on the outer side of the fifth shielding layer 125 or the inner side of the fifth shielding layer 125. The fourth wire 221 is disposed on the outer side of the sixth shielding layer 225 or the inner side of the sixth shielding layer 225.

[0146] In some embodiments of the present application, the jumper 300 is a third metal conductor 330 , one end of the third metal conductor 330 is connected to the third end c, and the other end is connected to the sixth end f.

[0147] The jumper wire 300 in this embodiment is a single metal conductor, or a plurality of metal conductors are combined to form an integral metal conductor, and the two ends of the third metal conductor 330 are respectively connected to the third end c of the first shielding conductor structure 120 and the sixth end f of the second shielding conductor structure 220. In this case, it is not necessary to pre-arrange the third wire 121 and the fourth wire 221 in the power line, and when the third end c and the sixth end f need to be connected, the additional third metal conductor 330 can be directly used for connection without extracting part of the wire material or part of the shielding layer in the power line.

[0148] In some embodiments of the present application, the first shielding conductor structure 120 further includes a fifth wire 122. In the first detection segment, the fifth wire 122 extends from the first end a to the third end c and is in conductive contact with the first shielding conductor structure 120. In the second detection segment, the fifth wire 122 extends from the third end c to the second end b and is in conductive contact with the first shielding conductor structure 120. The fifth wire 122 is connected to the detection protection device 900 through the first wire 130.

[0149] It can be understood that, by providing a fifth wire 122 in the first shielding conductor structure 120 and connecting it to the detection protection device 900 through the first wire 130, that is, in the first shielding conductor structure 120, the fifth wire 122 serves as a carrier connected to the first wire 130 to realize electrical signal transmission, and the fifth wire 122 extends from the first end a to the second end b in the first shielding conductor structure 120, so that the first wire 130 is conductively connected to the first detection segment and the second detection segment of the first shielding conductor structure 120, so that the electrical signal changes of the first detection segment and the second detection segment of the first shielding conductor structure 120 can be conducted through the first wire 130.

[0150] The second shielding conductor structure 220 also includes a sixth wire 222. In the third detection segment, the sixth wire 222 extends from the fourth end d to the sixth end f and is in conductive contact with the second shielding conductor structure 220. In the fourth detection segment, the sixth wire 222 extends from the sixth end f to the fifth end e and is in conductive contact with the second shielding conductor structure 220. The sixth wire 222 is connected to the detection protection device 900 via the second wire 230.

[0151] It can be understood that, by providing a sixth wire 222 in the second shielding conductor structure 220 and connecting to the detection protection device 900 through the second wire 230, that is, in the second shielding conductor structure 220, the sixth wire 222 serves as a carrier connected to the second wire 230 to realize electrical signal transmission, and the sixth wire 222 extends from the fourth end d to the fifth end e in the second shielding conductor structure 220, so that the second wire 230 is conductively connected to the third detection segment and the fourth detection segment in the second shielding conductor structure 220, so that the electrical signal changes of the third detection segment and the fourth detection segment of the second shielding conductor structure 220 can be conducted through the second wire 230.

[0152] In some embodiments of the present application, the first shielding conductor structure 120 further includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 wraps the second shielding layer 124, the second shielding conductor structure 220 further includes a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 wraps the fourth shielding layer 224;

[0153] The first shielding conductor structure 120 can adopt a double-layer structure or a multi-layer structure, which includes at least a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 and the second shielding layer 124 are arranged closely together and at least one wire can be arranged between the two shielding layers, and the second shielding conductor structure 220 can also adopt a double-layer structure or a multi-layer structure, which includes at least a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 and the fourth shielding layer 224 are arranged closely together and at least one wire can be arranged between the two shielding layers. Such a double-layer shielding layer structure enables the wire to be better fixed between the two shielding layers, which is convenient for fixing the wire during the production process and also avoids the wire from loosening and shifting during transportation or installation. Different power line structures can be formed in combination with the double-layer shielding layer structure for different wires.

[0154] For example, in the first detection segment and the second detection segment, the fifth wire 122 is arranged between the first shielding layer 123 and the second shielding layer 124; in the third detection segment and the fourth detection segment, the sixth wire 222 is arranged between the third shielding layer 223 and the fourth shielding layer 224;

[0155] Since the third metal conductor 330 is used as the jumper wire 300, the third wire 121 and the fourth wire 221 are not present in any detection segment. In this embodiment, the fifth wire 122 and the sixth wire 222 are both long wires extending along the power line 920, so the fifth wire 122 can be arranged between the first shielding layer 123 and the second shielding layer 124, and the fifth wire 122 is in conductive contact with the first shielding layer 123 and the second shielding layer 124, and the sixth wire 222 can be arranged between the third shielding layer 223 and the fourth shielding layer 224, and the sixth wire 222 is in conductive contact with the third shielding layer 223 and the fourth shielding layer 224.

[0156] Alternatively, at least one of the first return line 140 and the fifth conductive line 122 is disposed between the first shielding layer 123 and the second shielding layer 124 ; at least one of the second return line 240 and the sixth conductive line 222 is disposed between the third shielding layer 223 and the fourth shielding layer 224 .

[0157] In this example, the first return line 140 and the second return line 240 are added on the basis of the above example. The first return line 140 and the second return line 240 are wrapped with insulating skin and are insulated from each shielding layer. In this example, the first return line 140, the second return line 240, the fifth wire 122 and the sixth wire 222 are all long wires extending along the power line 920. Between the first shielding layer 123 and the second shielding layer 124, one of the first return line 140 and the fifth wire 122 can be set separately, or both can be set between the first shielding layer 123 and the second shielding layer 124. Between the third shielding layer 223 and the fourth shielding layer 224, one of the second return line 240 and the sixth wire 222 can be set separately, or both can be set between the third shielding layer 223 and the fourth shielding layer 224.

[0158] In some embodiments of the present application, the first shielding conductor structure 120 is the fifth shielding layer 125, and the second shielding conductor structure 220 is the sixth shielding layer 225; in the first detection segment and the second detection segment, the fifth wire 122 is tightly attached to the outside or inside of the fifth shielding layer 125; in the third detection segment and the fourth detection segment, the sixth wire 222 is tightly attached to the outside or inside of the sixth shielding layer 225.

[0159] The first shielding conductor structure 120 and the second shielding conductor structure 220 adopt a single-layer shielding layer structure, and the single-layer shielding layer can be a shielding layer formed of a single material, or a shielding layer that is not easily separated and is composited with multiple materials. The outer side and inner side of the fifth shielding layer 125 are conductive, so one of the outer side and inner side of the fifth shielding layer 125 is in close contact with the fifth wire 122, and the outer side and inner side of the sixth shielding layer 225 are conductive, so one of the outer side and inner side of the sixth shielding layer 225 is in close contact with the sixth wire 222.

[0160] For example, the fifth wire 122 is disposed on the outer side of the fifth shielding layer 125 or the inner side of the fifth shielding layer 125. The sixth wire 222 is disposed on the outer side of the sixth shielding layer 225 or the inner side of the sixth shielding layer 225.

[0161] In some embodiments of the present application, a portion of the fifth wire 122 is led out from the first end a of the first shielding conductor structure 120 to form a first wire 130 , and a portion of the sixth wire 222 is led out from the fourth end d of the second shielding conductor structure 220 to form a second wire 230 .

[0162] In this embodiment, the first wire 130 and the fifth wire 122 are a whole wire, and the second wire 230 and the sixth wire 222 are a whole wire. In the case where the power line is connected to the detection protection device 900 through the first shielding conductor structure 120 and the second shielding conductor structure 220, the fifth wire 122 is cut out from the first end a of the first shielding conductor structure 120 and connected to the detection protection device 900. At this time, the small section of the fifth wire 122 is the first wire 130. Similarly, the sixth wire 222 is cut out from the fourth end d of the second shielding conductor structure 220 and connected to the detection protection device 900. At this time, the small section of the sixth wire 222 is the second wire 230.

[0163] In some embodiments of the present application, the first return line 140 and the second return line 240 are wrapped with an insulating sheath; the first return line 140 is connected to the first shielding layer 123, the second shielding layer 124 or the fifth conductor 122 near the output end, and the second return line 240 is connected to the third shielding layer 223, the fourth shielding layer 224 or the sixth conductor 222 near the output end.

[0164] In the above-mentioned embodiment of the first shielded conductor structure 120 and the second shielded conductor structure 220 having a double-layer structure or a multi-layer structure, the first return line 140 and the second return line 240 can be connected to the corresponding shielding layer at the output end, and, in the above-mentioned embodiment having the fifth wire 122 and the sixth wire 222 extending from the input end to the output end along the power line, the first return line 140 and the second return line 240 can be connected to the fifth wire 122 and the sixth wire 222 at the output end, respectively. Therefore, the first return line 140 can be connected to the first shielding layer 123, the second shielding layer 124 or the fifth wire 122 at the output end of the power line, and the second return line 240 can be connected to the third shielding layer 223, the fourth shielding layer 224 or the sixth wire 222 at the output end of the power line.

[0165] In some embodiments of the present application, the first return line 140 and the second return line 240 are wrapped with an insulating sheath; the first return line 140 is connected to the fifth shielding layer 125 or the fifth conductor 122 near the output end, and the second return line 240 is connected to the sixth shielding layer 225 or the sixth conductor 222 near the output end.

[0166] In the above-mentioned embodiment of the first shielded conductor structure 120 and the second shielded conductor structure 220 having a single-layer shielding structure, the first return line 140 and the second return line 240 can be connected to the corresponding shielding layer at the output end, and, in the above-mentioned embodiment having the fifth wire 122 and the sixth wire 222 extending from the input end to the output end along the power line, the first return line 140 and the second return line 240 can be connected to the fifth wire 122 and the sixth wire 222 at the output end, respectively. Therefore, the first return line 140 can be connected to the fifth shielding layer 125 or the fifth wire 122 at the output end of the power line, and the second return line 240 can be connected to the sixth shielding layer 225 or the sixth wire 222 at the output end of the power line.

[0167] In some embodiments of the present application, the first return line 140 is obtained by wrapping a portion of the fifth conductive line 122 with an insulating sheath, and the second return line 240 is obtained by wrapping a portion of the sixth conductive line 222 with an insulating sheath.

[0168] A fifth conductor 122 and a sixth conductor 222 are arranged in the power cord of the present application. When the power cord is connected to a load device, a portion of the fifth conductor 122 is pulled out and wrapped with an insulating sheath on the outer layer to form a first return line 140. At this time, the fifth conductor 122 remaining in the first shielding conductor structure 120 is used to connect the first conductor 130, and the first return line 140 returns to the input end of the power cord to connect to the detection protection device 900, and a portion of the sixth conductor 222 is pulled out and wrapped with an insulating sheath on the outer layer to form a second return line 240. At this time, the sixth conductor 222 remaining in the second shielding conductor structure 220 is used to connect the second conductor 230, and the second return line 240 returns to the input end of the power cord to connect to the detection protection device 900.

[0169] In some embodiments of the present application, the first shielding layer 123, the second shielding layer 124, the third shielding layer 223 and the fourth shielding layer 224 are one of metal materials, semiconductor materials and conductive composite materials, and the shapes of the first shielding layer 123, the second shielding layer 124, the third shielding layer 223 and the fourth shielding layer 224 are one of ring-shaped, mesh-shaped and spiral-shaped. Among them, the first shielding layer 123 and the third shielding layer 223 are copper mesh, and the second shielding layer 124 and the fourth shielding layer 224 are aluminum foil. The outer shielding layer is made of copper mesh, which can facilitate the copper mesh to be led out as a jumper wire on the one hand, and on the other hand, it is also convenient for the installer to observe the wire sandwiched between the copper mesh and the aluminum foil through the copper mesh. The inner shielding layer is made of aluminum foil, which can effectively separate the current-carrying wire from the contact with the shielding layer and the wire, ensuring that the current-carrying wire is less susceptible to damage from the outside.

[0170] In some embodiments of the present application, the first shielding conductor structure 120 further includes a first coating film, which wraps the first shielding layer 123; the second shielding conductor structure 220 further includes a second coating film, which wraps the third shielding layer 223. The first coating film is used to wrap the first shielding layer 123 of the first shielding conductor structure 120, and the coating film is used to wrap the third shielding layer 223 of the second shielding conductor structure 220. The coating film is used to improve the protection performance of the power line, and can also wrap the wires outside the first shielding layer 123 and the third shielding layer 223, so that the core of the power line is compact as a whole and not easy to loose. Among them, the outer side of the first coating film is an insulator, and the inner side is a conductor to wrap the first shielding layer 123; the outer side of the second coating film is an insulator, and the inner side is a conductor to wrap the third shielding layer 223.

[0171] In some embodiments of the present application, the first current-carrying line 110 is wrapped by the first insulating layer 150 , the second shielding layer 124 wraps the first insulating layer 150 , the second current-carrying line 210 is wrapped by the second insulating layer 250 , and the fourth shielding layer 224 wraps the second insulating layer 250 .

[0172] The first current-carrying wire 110 and the second current-carrying wire 210 inside the power line are both wrapped with an insulating layer on the outer layer. The outer side of the first insulating layer 150 of the first current-carrying wire 110 is wrapped with a second shielding layer 124, and the outer side of the second insulating layer 250 of the second current-carrying wire 210 is wrapped with a fourth shielding layer 224.

[0173] In some embodiments of the present application, the fifth shielding layer 125 and the sixth shielding layer 225 are one of metal materials, semiconductor materials and conductive composite materials, and the shapes of the fifth shielding layer 125 and the sixth shielding layer 225 are one of ring-shaped, mesh-shaped and spiral-shaped. Among them, the first current-carrying wire 110 is wrapped by the first insulating layer 150, the fifth shielding layer 125 wraps the first insulating layer 150, the second current-carrying wire 210 is wrapped by the second insulating layer 250, and the sixth shielding layer 225 wraps the second insulating layer 250. This embodiment corresponds to an embodiment of a shielded conductor structure with a single-layer shielding structure, and the first insulating layer 150 outside the first current-carrying wire 110 is wrapped by the fifth shielding layer 125, and the second insulating layer 250 outside the second current-carrying wire 210 is wrapped by the sixth shielding layer 225.

[0174] In some embodiments of the present application, the first shielded conductor structure 120 and the second shielded conductor structure 220 are separately arranged inside the power line. The first shielded conductor structure 120 and the second shielded conductor structure 220 are separated, and the first end a, the second end b, the fourth end d and the fifth end e are respectively connected to the detection protection device 900, and the first shielded conductor structure 120 and the second shielded conductor structure 220 are connected to the third end c and the sixth end f through the jumper 300.

[0175] In some embodiments of the present application, the outer side of the first shielding conductor structure 120 is wrapped with a third insulating layer 160, and / or the outer side of the second shielding conductor structure 220 is wrapped with a fourth insulating layer 260, and the power cord also includes an outer insulating layer 500, which wraps the third insulating layer 160 and / or the fourth insulating layer 260.

[0176] In order to ensure that the first shielding conductor structure 120 and the second shielding conductor structure 220 are insulated from each other except for the jumper wire 300, a third insulating layer 160 is used to cover the first shielding conductor structure 120 and / or a fourth insulating layer 260 is used to wrap the second shielding conductor structure 220, that is, at least one of the first shielding conductor structure 120 and the second shielding conductor structure 220 is insulated, so that the first shielding conductor structure 120 and the second shielding conductor structure 220 can be effectively separated.

[0177] In some embodiments of the present application, a filling space is reserved between the outer insulating layer 500 and the third insulating layer 160 and the fourth insulating layer 260 , and the first return line 140 and the second return line 240 are disposed in the filling space.

[0178] There is usually some space between the third insulation layer 160 and the fourth insulation layer 260 and the outer insulation layer 500, and this space can be used to place some cables. For example, in this embodiment, the first return line 140 and the second return line 240 are placed in the filling space, and the outer layer of the first return line 140 and the second return line 240 is wrapped with an insulating skin to ensure insulation between the first shielding conductor structure 120 and the second shielding conductor structure 220.

[0179] It can be seen from the above description that the embodiment of the present application provides a power cord, using the first current-carrying line 110 to cover the first shielded conductor structure 120, and the second current-carrying line 210 to cover the second shielded conductor structure 220, and using the jumper, the first shielded conductor structure 120 and the second shielded conductor structure 220 to construct the first detection segment, the second detection segment, the third detection segment, the fourth detection segment and the fifth detection segment, and the detection protection device 900 connects these five detection segments, so that when the current changes in these detection segments, it can detect that the shielding layer is open or leaking. Among them, according to the different wire body structures, different forms of jumpers, different forms of internal wire positions in the first shielded conductor structure 120 and the second shielded conductor structure 220, etc., can facilitate the production and manufacturing of power cords and the wiring of installers, and can be applied to LCDI equipment to ensure the safety of users' electricity use.

[0180] The power cord of the present application is described in detail below through some specific examples.

[0181] Example 1

[0182] The first current-carrying wire 110 of the power line is wrapped with a first insulating layer 150, the first insulating layer 150 is wrapped with a first shielding conductor structure 120, the first shielding conductor structure 120 includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 is wrapped with the second shielding layer 124, and the first shielding layer 123 is wrapped with a third insulating layer 160;

[0183] The second current-carrying wire 210 of the power line is coated with a second insulating layer 250, the second insulating layer 250 is coated with a second shielding conductor structure 220, the second shielding conductor structure 220 includes a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 is coated with the fourth shielding layer 224, and the third shielding layer 223 is coated with a fourth insulating layer 260;

[0184] On the first shielding conductor structure 120, a first end a is arranged near the input end of the power line, a second end b is arranged near the output end of the power line, and a third end c is arranged between the first end a and the second end b; the first end a is connected to the detection protection device 900 through the first wire 130, and the second end b is connected to the detection protection device 900 through the first return wire 140; on the second shielding conductor structure 220, a fourth end d is arranged near the input end of the power line, a fifth end e is arranged near the output end of the power line, and a sixth end f is arranged between the fourth end d and the fifth end e; the fourth end d is connected to the detection protection device 900 through the second wire 230, the fifth end e is connected to the detection protection device 900 through the second return wire 240, and the third end c and the sixth end f are connected through a jumper wire;

[0185] The first shielded conductor structure 120 further includes a fifth conductor 122. In this example, the first return line 140 is located outside the first shielded conductor structure 120, and the fifth conductor 122 is arranged between the first shielding layer 123 and the second shielding layer 124. The second shielded conductor structure 220 further includes a sixth conductor 222. In this example, the second return line 240 is located outside the second shielded conductor structure 220, and the sixth conductor 222 is arranged between the third shielding layer 223 and the fourth shielding layer 224. Figure 4a As shown, the positional relationship between the fifth conductor 122 and the first return line 140 and the first shielding layer 123 and the second shielding layer 124 is shown, and the positional relationship between the sixth conductor 222 and the second return line 240 and the third shielding layer 223 and the fourth shielding layer 224 is also shown.

[0186] like Figure 4bAs shown, in the fifth detection segment at the third end c and the sixth end f, at least a portion of the first shielding layer 123 is led out at the third end c to form a first metal conductor 310, and at least a portion of the third shielding layer 223 is led out at the sixth end f to form a second metal conductor 320. For example, the first shielding layer 123 and the third shielding layer 223 are copper mesh shielding layers, a portion of the first shielding layer 123 is drawn out through the third insulating layer 160 as the first metal conductor 310, and a portion of the third shielding layer 223 is drawn out through the fourth insulating layer 260 as the second metal conductor 320.

[0187] The third current-carrying wire 400 of the power line, the first current-carrying wire 110 and the second current-carrying wire 210 are all wrapped in the outer insulating layer 500, and a filling space is left between the first current-carrying wire 110, the second current-carrying wire 210 and the third current-carrying wire 400.

[0188] Example 2

[0189] The difference between Example 2 and Example 1 is that in this example, the first return line 140 is located in the first shielding conductor structure 120, and at least one of the first return line 140 and the fifth conductor 122 is arranged between the first shielding layer 123 and the second shielding layer 124; the second shielding conductor structure 220 also includes a sixth conductor 222. In this example, the second return line 240 is located in the second shielding conductor structure 220, and at least one of the second return line 240 and the sixth conductor 222 is arranged between the third shielding layer 223 and the fourth shielding layer 224. Figure 5a and Figure 5b As shown, the fifth conductor 122 and the first return line 140 are both arranged between the first shielding layer 123 and the second shielding layer 124 , and the sixth conductor 222 and the second return line 240 are also arranged between the third shielding layer 223 and the fourth shielding layer 224 .

[0190] Example 3

[0191] The difference between Example 3 and Example 1 is that the first current-carrying line 110 of the power line is wrapped with the first insulating layer 150, the first insulating layer 150 is wrapped with the first shielding conductor structure 120, the first shielding conductor structure 120 includes a fifth shielding layer 125, and the third insulating layer 160 is wrapped outside the fifth shielding layer 125; the second current-carrying line 210 of the power line is covered with a second insulating layer 250, the second insulating layer 250 is wrapped with the second shielding conductor structure 220, the second shielding conductor structure 220 includes a sixth shielding layer 225, and the fourth insulating layer 260 is wrapped outside the sixth shielding layer 225;

[0192] A fifth conductor 122 is disposed between the first insulating layer 150 and the fifth shielding layer 125, and a sixth conductor 222 is disposed between the second insulating layer 250 and the sixth shielding layer 225. Figure 6aand Figure 6b shown.

[0193] Example 4

[0194] The first current-carrying wire 110 of the power line is wrapped with a first insulating layer 150, the first insulating layer 150 is wrapped with a first shielding conductor structure 120, the first shielding conductor structure 120 includes a first shielding layer 123 and a second shielding layer 124, the first shielding layer 123 is wrapped with the second shielding layer 124, and the first shielding layer 123 is wrapped with a third insulating layer 160;

[0195] The second current-carrying wire 210 of the power line is coated with a second insulating layer 250, the second insulating layer 250 is coated with a second shielding conductor structure 220, the second shielding conductor structure 220 includes a third shielding layer 223 and a fourth shielding layer 224, the third shielding layer 223 is coated with the fourth shielding layer 224, and the third shielding layer 223 is coated with a fourth insulating layer 260;

[0196] On the first shielding conductor structure 120, a first end a is arranged near the input end of the power line, a second end b is arranged near the output end of the power line, and a third end c is arranged between the first end a and the second end b; the first end a is connected to the detection protection device 900 through the first wire 130, and the second end b is connected to the detection protection device 900 through the first return wire 140; on the second shielding conductor structure 220, a fourth end d is arranged near the input end of the power line, a fifth end e is arranged near the output end of the power line, and a sixth end f is arranged between the fourth end d and the fifth end e; the fourth end d is connected to the detection protection device 900 through the second wire 230, the fifth end e is connected to the detection protection device 900 through the second return wire 240, and the third end c and the sixth end f are connected through a jumper wire;

[0197] The first shielded conductor structure 120 also includes a third conductor 121 and a fifth conductor 122. In this example, the first return line 140 is located in the first shielded conductor structure 120, so at least one of the first return line 140, the third conductor 121 and the fifth conductor 122 is arranged between the first shielding layer 123 and the second shielding layer 124; the second shielded conductor structure 220 also includes a fourth conductor 221 and a sixth conductor 222. In this example, the second return line 240 is located in the second shielded conductor structure 220, so at least one of the second return line 240, the fourth conductor 221 and the sixth conductor 222 is arranged between the third shielding layer 223 and the fourth shielding layer 224. Figure 7aAs shown, the fifth conductor 122 and the first return line 140 are located between the first shielding layer 123 and the second shielding layer 124, and the third conductor 121 is located outside the first shielding layer 123. The sixth conductor 222 and the second return line 240 are located between the third shielding layer 223 and the fourth shielding layer 224, and the fourth conductor 221 is located outside the third shielding layer 223. Other positional relationships are not shown, and can be obtained by adjusting the positions of the three cables.

[0198] like Figure 7b As shown, in the fifth detection segment at the third end c and the sixth end f, at least a portion of the third wire 121 is led out at the third end c to form the first metal conductor 310, and at least a portion of the fourth wire 221 is led out at the sixth end f to form the second metal conductor 320. For example, the third wire 121 is disconnected at the third end c, and a portion is drawn out through the third insulating layer 160 as the first metal conductor 310, and the fourth wire 221 is disconnected at the sixth end f, and a portion is drawn out through the fourth insulating layer 260 as the second metal conductor 320. At this time, the third wire 121 is left in both the first detection segment and the second detection segment, and the fourth wire 221 is left in both the third detection segment and the fourth detection segment.

[0199] The third current-carrying wire 400 of the power line, the first current-carrying wire 110 and the second current-carrying wire 210 are all wrapped in the outer insulating layer 500, and a filling space is left between the first current-carrying wire 110, the second current-carrying wire 210 and the third current-carrying wire 400.

[0200] Example 5

[0201] The difference between Example 5 and Example 4 is that the first return line 140 is located outside the first shielding conductor structure 120, and the second return line 240 is located outside the second shielding conductor structure 220, and at least one of the third wire 121 and the fifth wire 122 is arranged between the first shielding layer 123 and the second shielding layer 124, and at least one of the fourth wire 221 and the sixth wire 222 is arranged between the third shielding layer 223 and the fourth shielding layer 224. Figure 8a As shown, the third wire 121 and the fifth wire 122 are both located between the first shielding layer 123 and the second shielding layer 124, and the fourth wire 221 and the sixth wire 222 are both located between the third shielding layer 223 and the fourth shielding layer 224. Other positional relationships are not shown, and can be obtained by adjusting the positions of the three cables.

[0202] like Figure 8bAs shown, in the fifth detection segment between the third end c and the sixth end f, the third wire 121 is disconnected at the third end c, and a portion is pulled out through the first shielding layer 123 and the third insulating layer 160 as the first metal conductor 310, and the fourth wire 221 is disconnected at the sixth end f, and a portion is pulled out through the second shielding layer 223 and the fourth insulating layer 260 as the second metal conductor 320. At this time, the third wire 121 remains in the first detection segment and the second detection segment, and the fourth wire 221 remains in the third detection segment and the fourth detection segment.

[0203] Example 6

[0204] The difference between Example 6 and Example 4 is that the first shielding conductor structure 120 includes a fifth shielding layer 125, and the second shielding conductor structure includes a sixth shielding layer 225, and the third wire 121 and the fifth wire 122 are located on the same side or different sides of the fifth shielding layer 125, and the fourth wire 221 and the sixth wire 222 are located on the same side or different sides of the sixth shielding layer 225, such as Figure 9a Other positional relationships are not shown, and can be obtained by adjusting the positions of the three cables.

[0205] like Figure 9b As shown, in the fifth detection segment between the third end c and the sixth end f, the third wire 121 is disconnected at the third end c, and a portion is pulled out through the third insulating layer 160 as the first metal conductor 310, and the fourth wire 221 is disconnected at the sixth end f, and a portion is pulled out through the fourth insulating layer 260 as the second metal conductor 320. At this time, the third wire 121 remains in the first detection segment and the second detection segment, and the fourth wire 221 remains in the third detection segment and the fourth detection segment.

[0206] Example 7

[0207] The difference between Example 7 and Example 5 is that the third wire 121 is not disconnected at the third end c, and the part of the third wire 121 in the first detection segment is drawn out from the third end c through the first shielding layer 123 and the third insulating layer 160 as the first metal conductor 310, and the fourth wire 221 is not disconnected at the sixth end f, and the part of the fourth wire 221 in the third detection segment is drawn out from the sixth end f through the third shielding layer 223 and the fourth insulating layer 260 as the second metal conductor 320. Fig.10c As shown, at this time, there is no third wire 121 in the first detection segment, and there is no fourth wire 221 in the third detection segment. Fig.10a As shown, the third wire 121 is left in the second detection segment, and the fourth wire 221 is left in the fourth detection segment. Fig.10b shown.

[0208] Reference Fig.11As shown, an embodiment of the present application also provides an electrical connection device, including a shell 910, a detection and protection device 900 arranged inside the shell 910, and a power cord 930 of any of the above embodiments, the first end a and the fourth end d are located inside the shell 910, and the third end c and the sixth end f are located at the connection between the power cord 930 and the shell 910.

[0209] Reference Fig.11 As shown, an embodiment of the present application also provides an electrical connection device, including a shell 910, a detection and protection device 900 arranged inside the shell 910, and a power cord 930 of any of the above embodiments, the first end a and the fourth end d are located inside the shell 910, and the third end c and the sixth end f are located at the connection between the power cord 930 and the load device.

[0210] Reference Fig.11 As shown, an embodiment of the present application also provides an electrical connection device, including a shell 910, a detection and protection device 900 arranged inside the shell 910, and a power cord 930 of any of the above embodiments, the first end a and the fourth end d are located inside the shell 910, and the third end c and the sixth end f are located between the shell 910 and the load device.

[0211] The detection and protection device 900 comprises:

[0212] A switch module, used to control the power connection between the input end and the output end of the power line 930;

[0213] The driving module is connected to the first end a through the first wire 130, to the second end b through the first return line 140, to the fourth end d through the second wire 230, and to the fifth end e through the second return line 240. The driving module is used to control the switch module to disconnect the power connection between the input end and the output end of the power line 930 when a leakage current or an open circuit is detected in the first shielding conductor structure 120 and / or the second shielding conductor structure 220.

[0214] An embodiment of the present application further provides an electrical device, including a load device and an electrical connection device of any of the above embodiments, wherein the output end of the power line 930 is connected to the load device.

[0215] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above-mentioned implementation mode. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the present application. These equivalent deformations or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A power line, comprising a first current-carrying line and a second current-carrying line, characterized in that: The input end of the power line is used to connect to the detection and protection device, the output end of the power line is used to connect to the load device, and the power line also includes: a first shielding conductor structure, covering the first current-carrying line, the first shielding conductor structure comprising 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; a second shielding conductor structure, covering the second current-carrying line, the second shielding conductor structure comprising a fourth end close to the input end of the power line, a fifth end close to the output end of the power line, and a sixth end located between the fourth end and the fifth end; A first wire, used to connect the first end and the detection and protection device; A second wire, used to connect the fourth end and the detection protection device; A first return line, used to connect the second end and the detection protection device; A second return line, used to connect the fifth end and the detection protection device; A jumper wire is used to connect the third end and the sixth end.

2. The power cord according to claim 1, characterized in that: The first shielded conductor structure between the first end and the third end constitutes a first detection segment, the first shielded conductor structure between the third end and the second end constitutes a second detection segment, the second shielded conductor structure between the fourth end and the sixth end constitutes a third detection segment, the second shielded conductor structure between the sixth end and the fifth end constitutes a fourth detection segment, and the third end and the sixth end constitute a fifth detection segment through the jumper wire.

3. The power cord according to claim 2, characterized in that: The number of the jumpers is N groups, there are N third ends between the first end and the second end, and there are N sixth ends between the fourth end and the fifth end, so as to form N fifth detection segments, where N is a positive integer greater than 1.

4. The power cord according to claim 1, characterized in that: The jumper wire comprises a first metal conductor led out from the third end and a second metal conductor led out from the sixth end, the first metal conductor being connected to the second metal conductor; Alternatively, the jumper wire includes a first metal conductor extending from the third end, and the first metal conductor is connected to the sixth end; Alternatively, the jumper includes a second metal conductor extending from the sixth end, and the first metal conductor is connected to the third end.

5. The power cord according to claim 4, characterized in that: The first shielding conductor structure includes a first shielding component covering the first current-carrying line, and the second shielding conductor structure includes a second shielding component covering the second current-carrying line. At least a portion of the first shielding component is pulled out at the third end as the first metal conductor, and at least a portion of the second shielding component is pulled out at the sixth end as the second metal conductor.

6. The power cord according to claim 5, characterized in that: The first shielding component includes a first shielding layer and a second shielding layer, the first shielding layer wraps the second shielding layer, the second shielding component includes a third shielding layer and a fourth shielding layer, the third shielding layer wraps the fourth shielding layer; a portion of the first shielding layer is led out at the third end as the first metal conductor, or a portion of the third shielding layer is led out at the sixth end as the second metal conductor.

7. The power cord according to claim 6, characterized in that: The first shielded conductor structure comprises a fifth conductor, the fifth conductor is led out from a first end of the first shielded conductor structure to form the first conductor, and the second shielded conductor structure comprises a sixth conductor, the sixth conductor is led out from a fourth end of the second shielded conductor structure to form the second conductor; At least one of the first return line and the fifth conducting line is disposed between the first shielding layer and the second shielding layer; and at least one of the second return line and the sixth conducting line is disposed between the third shielding layer and the fourth shielding layer.

8. The power cord according to claim 5, characterized in that: The first shielding component is the fifth shielding layer, the second shielding component is the sixth shielding layer, a portion of the fifth shielding layer is led out at the third end as the first metal conductor, and a portion of the sixth shielding layer is led out at the sixth end as the second metal conductor.

9. The power cord according to claim 4, characterized in that: The first shielded conductor structure includes a third wire, and the second shielded conductor structure includes a fourth wire, the third wire extends from the first end to the second end, and the fourth wire extends from the fourth end to the fifth end, at least a portion of the third wire is extracted at the third end as the first metal conductor, and at least a portion of the fourth wire is extracted at the sixth end as the second metal conductor.

10. The power cord according to claim 1, characterized in that: The jumper wire is a third metal conductor, one end of the third metal conductor is connected to the third end, and the other end of the third metal conductor is connected to the sixth end.

11. The power cord according to any one of claims 1 to 6 and 8 to 10, characterized in that: The first shielded conductor structure includes a fifth conductor, which is led out from a first end of the first shielded conductor structure to form the first conductor, and the second shielded conductor structure includes a sixth conductor, which is led out from a fourth end of the second shielded conductor structure to form the second conductor.

12. The power cord according to claim 11, characterized in that: The first shielding conductor structure includes a first shielding component covering the first current-carrying line, the second shielding conductor structure includes a second shielding component covering the second current-carrying line, the fifth conductor is in conductive contact with the first shielding component, and the sixth conductor is in conductive contact with the second shielding component.

13. The power cord according to claim 12, characterized in that: The first shielding assembly comprises a first shielding layer and a second shielding layer, the first shielding layer wraps the second shielding layer, the second shielding assembly comprises a third shielding layer and a fourth shielding layer, the third shielding layer wraps the fourth shielding layer; At least one of the first return line and the fifth conducting line is disposed between the first shielding layer and the second shielding layer; and at least one of the second return line and the sixth conducting line is disposed between the third shielding layer and the fourth shielding layer.

14. The power cord according to claim 13, characterized in that: The first return line and the second return line are wrapped with an insulating sheath; the first return line is connected to the first shielding layer, the second shielding layer or the fifth conductor near the output end, and the second return line is connected to the third shielding layer, the fourth shielding layer or the sixth conductor near the output end.

15. The power cord according to claim 11, characterized in that: The first return line is obtained by wrapping a portion of the fifth conductive wire with an insulating sheath, and / or the second return line is obtained by wrapping a portion of the sixth conductive wire with an insulating sheath.

16. The power cord according to claim 6 or 13, characterized in that: The first shielding layer, the second shielding layer, the third shielding layer or the fourth shielding layer is one of a metal material, a semiconductor material and a conductive composite material, and the shape of the first shielding layer, the second shielding layer, the third shielding layer or the fourth shielding layer is one of a ring shape, a mesh shape and a spiral shape.

17. The power cord according to claim 16, characterized in that: The first shielding layer and the third shielding layer are copper meshes, and the second shielding layer and the fourth shielding layer are aluminum foils.

18. The power cord according to claim 17, characterized in that: The first shielding component further includes a first covering film, which wraps the first shielding layer; the second shielding component further includes a second covering film, which wraps the third shielding layer.

19. The power cord according to claim 18, characterized in that The outer side of the first covering film is an insulator, and the inner side is a conductor to wrap the first shielding layer; the outer side of the second covering film is an insulator, and the inner side is a conductor to wrap the third shielding layer.

20. The power cord according to claim 1, characterized in that The first current-carrying line is wrapped by a first insulating layer, the first shielding conductor structure wraps the first insulating layer, the second current-carrying line is wrapped by a second insulating layer, and the second shielding conductor structure wraps the second insulating layer.

21. The power cord according to claim 1, characterized in that: The outer side of the first shielding conductor structure is wrapped with a third insulating layer, and / or the outer side of the second shielding conductor structure is wrapped with a fourth insulating layer. The power cord also includes an outer insulating layer, which wraps the third insulating layer and / or the fourth insulating layer.

22. The power cord according to claim 21, characterized in that A filling space is reserved between the outer insulating layer and the third insulating layer and the fourth insulating layer, and the first return line and the second return line are arranged in the filling space.

23. An electrical connection device, characterized in that: It comprises a shell, a detection and protection device arranged inside the shell, and a power cord as described in any one of claims 1 to 22, wherein 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.

24. An electrical connection device, characterized in that: It comprises a shell, a detection and protection device arranged inside the shell, and a power cord as described in any one of claims 1 to 22, wherein 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 load device.

25. An electrical connection device, characterized in that: It comprises a shell, a detection and protection device arranged inside the shell, and a power cord as described in any one of claims 1 to 22, wherein the first end and the fourth end are located inside the shell, and the third end and the sixth end are located between the shell and the load device.

26. The electrical connection device according to any one of claims 23 to 25, characterized in that: 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; A driving module is connected to the first end through the first wire, to the second end through the first return wire, to the fourth end through the second wire, and to the fifth end through the second return wire. The driving module is used to control the switch module to disconnect the power connection between the input end and the output end of the power line when a leakage current is detected or an open circuit occurs in the first shielded conductor structure and / or the second shielded conductor structure.

27. An electrical equipment, characterized in that: It comprises a load device and the electrical connection device according to any one of claims 23 to 25, wherein the output end of the power line is connected to the load device.

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