Current-carrying wire, power line, electric connection equipment and electric equipment

Abstract

The invention discloses a current-carrying wire, a power line, electric connection equipment and electric equipment. The current-carrying wire comprises a current-carrying conductor, a first insulating layer, a shielding conductor structure and a second insulating layer, the shielding conductor structure comprises a first shielding layer wrapping the first insulating layer and a first conductor tightly attached to the first shielding layer. The power line comprises a first current-carrying wire, a second current-carrying wire and a fifth insulating layer; the electric connection equipment comprises a shell, a detection protection device and the power line, wherein the detection protection device and the power line are arranged in the shell; the electric equipment comprises load equipment and the electric connection equipment, and the output end of the power line is connected to the load equipment. According to the current-carrying wire, the power line, the electric connection equipment and the electric equipment provided by the embodiment of the invention, the power supply safety can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power cords, and in particular, to a current-carrying wire, a power cord, an electrical connection device, and an electrical device. Background Art

[0002] A leakage current detection circuit breaker is a power connection device for electrical appliances, which can detect the leakage current of a power cord group through a leakage current detection wire, and cut off the power connection of the electrical appliance when a certain leakage current is detected to ensure safe use. In recent years, in addition to detecting the leakage current of the power cord through the leakage current detection wire, the leakage current detection circuit breaker has also put forward higher safety detection requirements, such as detecting whether there is an open circuit in the leakage current detection wire.

[0003] Therefore, for the power cord used in conjunction with the leakage current detection circuit breaker, the internal leakage current detection wire thereof also needs to meet the safety detection requirements such as leakage detection and open circuit detection. However, the current power cord structure cannot fully meet the foregoing safety detection requirements, resulting in insufficient safety during use. Summary of the Invention

[0004] An object of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a current-carrying wire, a power cord, an electrical connection device, and an electrical device, which can improve the power supply safety.

[0005] In a first aspect, an embodiment of the present invention provides a current-carrying wire, including a first current-carrying conductor, a first insulating layer, a first shielding conductor structure, and a second insulating layer, wherein:

[0006] The first insulating layer wraps the first current-carrying conductor;

[0007] The first shielding conductor structure is used to detect the leakage current from the first current-carrying conductor. The first shielding conductor structure includes a first shielding layer wrapping the first insulating layer and a first conductor closely attached to the first shielding layer. The first conductor is used to transmit the electrical signal on the first shielding conductor structure to the outside of the current-carrying wire;

[0008] The second insulating layer wraps outside the first shielding conductor structure.

[0009] According to the current-carrying line provided by the embodiments of the present invention, it has at least the following beneficial effects: The first current-carrying conductor is used to provide working current for the load device; the first insulating layer wraps the first current-carrying conductor to avoid electric leakage; a first shielding conductor structure is arranged outside the first insulating layer, which can effectively detect the possible electric leakage when the first insulating layer is damaged, and transmit a signal to the outside of the current-carrying line to cut off the power supply, avoiding the accidental occurrence of electric shock to personnel and improving safety; wherein, the first shielding conductor structure includes a first shielding layer and a first conductor. The first shielding layer wraps the first current-carrying conductor to comprehensively detect the leakage current on the entire first current-carrying conductor, and the first conductor in close contact with the first shielding layer serves to conveniently and reliably transmit the electrical signal on the first shielding conductor structure to the outside of the current-carrying line. In addition, a second insulating layer is used to wrap the first shielding conductor structure, making the contact between the first shielding layer and the first conductor closer, so that the electrical signal on the first shielding layer can be more reliably transmitted to the first conductor; therefore, the first shielding conductor structure composed of the first shielding layer and the first conductor has the advantages of comprehensive detection and convenient and reliable electrical signal transmission, thereby improving the power supply safety of the current-carrying line.

[0010] According to the current-carrying line provided by some embodiments of the present invention, the first shielding conductor structure includes a first end close to the input end of the first current-carrying conductor, a second end close to the output end of the first current-carrying conductor, and a third end located between the first end and the second end. The current-carrying line further includes a first metal conductor led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

[0011] According to the current-carrying line provided by some embodiments of the present invention, an insulating outer skin is provided outside the first metal conductor.

[0012] According to the current-carrying line provided by some embodiments of the present invention, the first shielding layer is made of a single-sided conductive flexible material; the first shielding layer wraps the first insulating layer in a spiral winding manner, or wraps the first insulating layer parallel to the axis of the first current-carrying conductor.

[0013] According to the current-carrying line provided by some embodiments of the present invention, the first shielding layer wraps the first insulating layer in a manner of being woven into a net by multiple strands of conductors.

[0014] According to the current-carrying line provided by some embodiments of the present invention, the first shielding layer simultaneously includes a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a net by multiple strands of conductors.

[0015] According to the current-carrying line provided by some embodiments of the present invention, the first conductor is located between the first insulating layer and the first shielding layer, or between the first shielding layer and the second insulating layer.

[0016] An embodiment of the first aspect of the present invention further provides a current-carrying line, including a first current-carrying conductor, a first insulating layer, a first shielding conductor structure, a second insulating layer, and a first metal conductor, wherein:

[0017] The first insulating layer wraps the first current-carrying conductor;

[0018] The first shielding conductor structure is used to detect the leakage current from the first current-carrying conductor. The first shielding conductor structure includes a first shielding layer that wraps the first insulating layer; the first shielding conductor structure includes a first end near the input end of the first current-carrying conductor, a second end near the output end of the first current-carrying conductor, and a third end located between the first end and the second end;

[0019] The second insulating layer wraps outside the first shielding conductor structure;

[0020] The first metal conductor is led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

[0021] The current-carrying line provided by the embodiment of the present invention has at least the following beneficial effects: The first current-carrying conductor is used to provide working current for the load device; the first insulating layer wraps the first current-carrying conductor to avoid leakage; a first shielding conductor structure is arranged outside the first insulating layer, which can effectively detect the possible leakage when the first insulating layer is damaged, and transmit a signal to the outside of the current-carrying line to cut off the power supply, avoiding the accident of electric shock to personnel and improving safety; by providing a first opening in the second insulating layer and leading out the first metal conductor from the third end of the first shielding conductor structure, the first metal conductor passes through the first opening, so that the first shielding conductor structure can transmit an electrical signal to the outside at the first end near the input end of the first current-carrying conductor, and can also transmit an electrical signal to the outside at the second end near the output end of the first current-carrying conductor, and can also transmit an electrical signal to the outside through the first metal conductor at the third end, that is, it can transmit electrical signals to the outside at multiple different positions at the same time, realizing the segmented detection of the first shielding conductor structure, providing more detection paths, and being able to more comprehensively and reliably realize the safety detection of the current-carrying line, thereby improving the power supply safety of the current-carrying line.

[0022] An embodiment of the first aspect of the present invention further provides a current-carrying line, including a first current-carrying conductor, a first insulating layer, a first shielding conductor structure, and a second insulating layer, wherein:

[0023] The first insulating layer wraps the first current-carrying conductor;

[0024] The first shielding conductor structure is used to detect the leakage current from the first current-carrying conductor. The first shielding conductor structure includes a first shielding layer wrapping the first insulating layer, a second shielding layer wrapping the first shielding layer, and a first conductor located between the first shielding layer and the second shielding layer. The first conductor is used to transfer the electrical signal on the first shielding conductor structure to the outside of the current-carrying line;

[0025] The second insulating layer wraps around the outside of the first shielding conductor structure.

[0026] The current-carrying line provided according to the embodiment of the present invention has at least the following beneficial effects: The first current-carrying conductor is used to provide working current for the load device; the first insulating layer wraps the first current-carrying conductor to avoid leakage; setting the first shielding conductor structure outside the first insulating layer can effectively detect the possible leakage when the first insulating layer is damaged, and transmit a signal to the outside of the current-carrying line to cut off the power supply, avoiding the accident of electric shock to personnel and improving safety; among them, the first shielding conductor structure is composed of three parts: the first shielding layer, the first conductor and the second shielding layer. Both the first shielding layer and the second shielding layer wrap the first current-carrying conductor to comprehensively detect the leakage current on the entire first current-carrying conductor. The structure of using multiple shielding layers can improve the reliability of leakage detection; the first conductor plays the role of conveniently and reliably transferring the electrical signal on the first shielding conductor structure to the outside of the current-carrying line. In addition, the second insulating layer is used to wrap the first shielding conductor structure, making the contact between the first conductor and the first shielding layer and the second shielding layer closer, so that the electrical signals on the first shielding layer and the second shielding layer can be more reliably transmitted to the first conductor; therefore, the first shielding conductor structure composed of the combination of the first shielding layer, the first conductor and the second shielding layer has the advantages of comprehensive and reliable detection and convenient and reliable electrical signal transmission, thereby improving the power supply safety of the current-carrying line.

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

[0028] According to the current-carrying line provided by some embodiments of the present invention, an insulating outer skin is provided outside the first metal conductor.

[0029] According to the current-carrying line provided by some embodiments of the present invention, the first shielding layer is made of a single-sided conductive flexible material. The insulating surface of the first shielding layer faces inward and contacts the outer surface of the first insulating layer, and the conductive surface of the first shielding layer faces outward and contacts the first conductor and the second shielding layer; the second shielding layer is woven into a mesh by multiple conductors to wrap the first shielding layer.

[0030] According to the current-carrying line provided by some embodiments of the present invention, the first shielding layer is woven into a mesh by multiple conductors to wrap the first insulating layer; the second shielding layer is made of a single-sided conductive flexible material. The conductive surface of the second shielding layer faces inward and contacts the first conductor and the first shielding layer, and the insulating surface of the second shielding layer faces outward and contacts the inner surface of the second insulating layer.

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

[0032] According to the current-carrying line provided by some embodiments of the present invention, the second insulating layer is a flexible insulating film material and is wound around the outside of the first shielding conductor structure or is wrapped parallel to the axis of the first current-carrying conductor around the first shielding conductor structure;

[0033] Or,

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

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

[0036] The first current-carrying line includes a first current-carrying conductor, a first insulating layer wrapping the first current-carrying conductor, and a first shielding conductor structure for detecting leakage current from the first current-carrying conductor. The first shielding conductor structure includes a first shielding layer wrapping the first insulating layer; the first shielding conductor structure includes a first end close to the input end of the power cord, a second end close to the output end of the power cord, and a third end located between the first end and the second end;

[0037] The second current-carrying line includes a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shielding conductor structure for detecting leakage current from the second current-carrying conductor. The second shielding conductor structure includes a third shielding layer wrapping the third insulating layer; the second shielding conductor structure includes a fourth end near the input end, a fifth end near the output end, and a sixth end located between the fourth end and the fifth end;

[0038] A fifth insulating layer wraps the first current-carrying line and the second current-carrying line;

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

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

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

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

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

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

[0045] The power cord provided by the embodiment of the present invention has at least the following beneficial effects: In the first current-carrying line and the second current-carrying line of the power cord, the first current-carrying conductor and the second current-carrying conductor are used to provide working current for the load device; the first insulating layer wrapping the first current-carrying conductor and the third insulating layer wrapping the second current-carrying conductor can avoid electric leakage; by providing the first shielding conductor structure outside the first insulating layer and the second shielding conductor structure outside the third insulating layer, it can effectively detect the possible electric leakage when the first insulating layer and the third insulating layer are damaged, and transmit a signal outside the current-carrying line to cut off the power supply, avoiding the occurrence of accidental electric shock to personnel and improving safety; in addition, by adopting any one of Case 1 to Case 4, the third end of the first shielding conductor structure and the sixth end of the second shielding conductor structure are electrically connected together, so that there is a connection point between the shielding conductor structures of the first current-carrying line and the second current-carrying line, and the two shielding conductor structures are no longer independently separated. For example, the first segment between the first end on the left and the third end in the middle of the first shielding conductor structure is electrically connected to the two segments of the second shielding conductor structure through the first metal conductor and / or the second metal conductor. Similarly, the second segment between the third end in the middle and the second end on the right of the first shielding conductor structure is electrically connected to the two segments of the second shielding conductor structure through the first metal conductor and / or the second metal conductor, so that the first shielding conductor structure and the second shielding conductor structure form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, greatly enriching the feasibility and flexibility of the power cord for electric leakage detection and shielding structure open circuit detection, and being beneficial to improving the power supply safety of the power cord.

[0046] It can also be understood that the first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other, and can avoid the mutual interference between the electric leakage detection of the first current-carrying line and the electric leakage detection of the second current-carrying line.

[0047] An embodiment of the second aspect of the present invention also provides a power cord, including a first current-carrying line, a second current-carrying line and a fifth insulating layer, wherein:

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

[0049] The second current-carrying line includes a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shielding conductor structure for detecting leakage current from the second current-carrying conductor. The second shielding conductor structure includes a third shielding layer wrapping the third insulating layer and a second conductor closely attached to the third shielding layer. The second conductor is used to transmit the electrical signal on the second shielding conductor structure to the outside of the current-carrying line;

[0050] The fifth insulating layer wraps the first current-carrying line and the second current-carrying line;

[0051] The first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other.

[0052] The power cord provided according to the embodiment of the present invention has at least the following beneficial effects: In the first current-carrying line and the second current-carrying line of the power cord, the first current-carrying conductor and the second current-carrying conductor are used to provide working current for the load device; the first insulating layer wrapping the first current-carrying conductor and the third insulating layer wrapping the second current-carrying conductor can avoid leakage; setting the first shielding conductor structure outside the first insulating layer and the second shielding conductor structure outside the third insulating layer can effectively detect the possible leakage when the first insulating layer and the third insulating layer are damaged, and transmit a signal to the outside of the current-carrying line to cut off the power supply, avoiding the accidental occurrence of electric shock to personnel and improving safety; among them, the first shielding conductor structure includes a first shielding layer and a first conductor, the second shielding conductor structure includes a third shielding layer and a second conductor, the first shielding layer wrapping the first current-carrying conductor plays a role in comprehensively detecting the leakage current on the entire first current-carrying conductor, the third shielding layer wrapping the second current-carrying conductor plays a role in comprehensively detecting the leakage current on the entire second current-carrying conductor, the first conductor closely attached to the first shielding layer plays a role in conveniently and reliably transmitting the electrical signal on the first shielding conductor structure to the outside of the first current-carrying line, and the second conductor closely attached to the third shielding layer plays a role in conveniently and reliably transmitting the electrical signal on the second shielding conductor structure to the outside of the second current-carrying line; Therefore, the first shielding conductor structure composed of the first shielding layer and the first conductor, and the second shielding conductor structure composed of the third shielding layer and the second conductor have the advantages of comprehensive detection and convenient and reliable electrical signal transmission, so as to improve the power supply safety of the current-carrying line, and further improve the power supply safety of the power cord.

[0053] According to the power cord provided by some embodiments of the present invention, the first current-carrying line further includes a second insulating layer wrapping the outside of the first shielding conductor structure, and / or, the second current-carrying line further includes a fourth insulating layer wrapping the outside of the second shielding conductor structure.

[0054] According to the power cord provided by some embodiments of the present invention, the position inside the fifth insulating layer except for the first current-carrying line and the second current-carrying line is filled with an insulating material.

[0055] According to the power cord provided by some embodiments of the present invention, the first shielding conductor structure includes a first end close to the input end of the power cord, a second end close to the output end of the power cord, and a third end located between the first end and the second end; the second shielding conductor structure includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end;

[0056] The first current-carrying line and the second current-carrying line also satisfy any one of the following four situations:

[0057] Situation 1: The first current-carrying line further includes a first metal conductor led out from the third end, and the first metal conductor is connected to the sixth end;

[0058] Situation 2: The second current-carrying line further includes a second metal conductor led out from the sixth end, and the second metal conductor is connected to the third end;

[0059] Situation 3: The first current-carrying line further includes a first metal conductor led out from the third end, the second current-carrying line further includes a second metal conductor led out from the sixth end, and the first metal conductor is connected to the second metal conductor;

[0060] Situation 4: The power cord is further provided with a third metal conductor, and both ends of the third metal conductor are respectively connected to the third end and the sixth end.

[0061] According to the power cord provided by some embodiments of the present invention, when the second insulating layer exists, the second insulating layer is provided with a first opening for the first metal conductor to pass through; when the fourth insulating layer exists, the fourth insulating layer is provided with a second opening for the second metal conductor to pass through.

[0062] According to the power cord provided by some embodiments of the present invention, insulating sheaths are provided outside both the first metal conductor and the second metal conductor.

[0063] According to the power cord provided by some embodiments of the present invention, in Situation 1, the first metal conductor is welded to the sixth end; in Situation 2, the second metal conductor is welded to the third end; in Situation 3, the first metal conductor and the second metal conductor are welded at a position between the third end and the sixth end to achieve electrical connection; in Situation 4, one end of the third metal conductor is welded to the third end, and the other end is welded to the sixth end.

[0064] According to the power cord provided by some embodiments of the present invention, the first metal conductor and the second metal conductor extend to a position close to the input end or extend to a position close to the output end to achieve electrical connection.

[0065] According to the power cord provided by some embodiments of the present invention, the first conductor and the second conductor are stranded wires. The first metal conductor is obtained by leading out several strands of wires from the first conductor at the third end; the second metal conductor is obtained by leading out several strands of wires from the second conductor at the sixth end.

[0066] According to the power cord provided by some embodiments of the present invention, the first shielding layer wraps the first insulating layer in a manner of braiding a plurality of conductors into a mesh. The third shielding layer wraps the third insulating layer in a manner of braiding a plurality of conductors into a mesh. The first metal conductor is obtained by leading out several conductors from the first shielding layer at the third end, and the second metal conductor is obtained by leading out several conductors from the third shielding layer at the sixth end.

[0067] According to the power cord provided by some embodiments of the present invention, the third shielding layer is made of a single-sided conductive flexible material; the third shielding layer wraps the third insulating layer in a spiral winding manner or wraps the third insulating layer parallel to the axis of the second current-carrying conductor.

[0068] According to the power cord provided by some embodiments of the present invention, the third shielding layer wraps the third insulating layer in a manner of braiding a plurality of conductors into a mesh.

[0069] According to the power cord provided by some embodiments of the present invention, the third shielding layer includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer braided from a plurality of conductors into a mesh.

[0070] According to the power cord provided by some embodiments of the present invention, the second conductor is located between the third insulating layer and the third shielding layer, or between the third shielding layer and the fourth insulating layer when the fourth insulating layer exists.

[0071] According to the power cord provided by some embodiments of the present invention, the second shielding conductor structure further includes a fourth shielding layer that wraps the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

[0072] According to the power cord provided by some embodiments of the present invention, the third shielding layer is made of a single-sided conductive flexible material. The insulating surface of the third shielding layer faces inward and contacts the outer surface of the third insulating layer, and the conductive surface of the third shielding layer faces outward and contacts the second conductor and the fourth shielding layer; the fourth shielding layer is formed by braiding a plurality of conductors into a mesh to wrap the third shielding layer.

[0073] According to the power cord provided by some embodiments of the present invention, the third shielding layer is formed by braiding a plurality of conductors into a mesh to wrap the third insulating layer; the fourth shielding layer is made of a single-sided conductive flexible material. The conductive surface of the fourth shielding layer faces inward and contacts the second conductor and the third shielding layer; when the fourth insulating layer exists, the insulating surface of the fourth shielding layer faces outward and contacts the inner surface of the fourth insulating layer.

[0074] According to the power cord provided by some embodiments of the present invention, the second conductor is wrapped around the outside of the third insulating layer in a spiral winding manner, or is arranged parallel to the axis of the second current-carrying conductor outside the third insulating layer.

[0075] According to the power cord provided by some embodiments of the present invention, the fourth insulating layer is a flexible insulating film material and is wound around the outside of the second shielding conductor structure or is wrapped around the second shielding conductor structure parallel to the axis of the second current-carrying conductor;

[0076] Or,

[0077] The fourth insulating layer is an injection-molded insulating outer skin.

[0078] According to the power cord provided by some embodiments of the present invention, the power cord further includes a first return wire and a second return wire located inside the fifth insulating layer; one end of the first return wire close to the output end is connected to the second end; one end of the second return wire close to the output end is connected to the fifth end.

[0079] According to the power cord provided by some embodiments of the present invention, the first shielding conductor structure further includes a second shielding layer that wraps the first shielding layer and the first conductor, and the first conductor is located between the first shielding layer and the second shielding layer; the second shielding conductor structure further includes a fourth shielding layer that wraps the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

[0080] According to the power cord provided by some embodiments of the present invention, the first shielding layer is made of a single-sided conductive flexible material. The insulating surface of the first shielding layer faces inward and contacts the outer surface of the first insulating layer, and the conductive surface of the first shielding layer faces outward and contacts the first conductor and the second shielding layer; the second shielding layer wraps the first shielding layer in a manner of being woven into a net by multiple strands of conductors; the third shielding layer is made of a single-sided conductive flexible material. The insulating surface of the third shielding layer faces inward and contacts the outer surface of the third insulating layer, and the conductive surface of the third shielding layer faces outward and contacts the second conductor and the fourth shielding layer; the fourth shielding layer wraps the third shielding layer in a manner of being woven into a net by multiple strands of conductors.

[0081] According to the power cord provided by some embodiments of the present invention, the first return wire is located outside the first current-carrying wire, or between the second insulating layer and the first shielding conductor structure, or inside the first shielding conductor structure, or between the first shielding conductor structure and the first insulating layer.

[0082] According to the power cord provided by some embodiments of the present invention, the second return wire is located outside the second current-carrying wire, or between the fourth insulating layer and the second shielding conductor structure, or inside the second shielding conductor structure, or between the second shielding conductor structure and the third insulating layer.

[0083] According to the power cord provided by some embodiments of the present invention, one end of the first shielding layer close to the output end, or one end of the first conductor close to the output end, or one end of the second shielding layer close to the output end serves as the second end and is connected to one end of the first return wire close to the output end.

[0084] According to the power cord provided by some embodiments of the present invention, one end of the third shielding layer close to the output end, or one end of the second conductor close to the output end, or one end of the fourth shielding layer close to the output end serves as the fifth end and is connected to one end of the second return wire close to the output end.

[0085] According to the power cord provided by some embodiments of the present invention, the first return wire and the second return wire are wires with insulating outer sheaths.

[0086] In a third aspect, an embodiment of the present invention provides an electrical connection device, including a housing, a detection and protection device disposed inside the housing, and a power cord as described in the second aspect embodiment above. The first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device. The first end and the fourth end are located inside the housing, and the third end and the sixth end are located at the connection between the power cord and the housing.

[0087] An embodiment of the third aspect of the present invention further provides an electrical connection device, including a housing, a detection and protection device disposed inside the housing, and a power cord as described in the second aspect embodiment above. The first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device. The first end and the fourth end are located inside the housing, and the output end of the power cord is used to connect to a load device. The third end and the sixth end are located at the connection between the power cord and the load device.

[0088] An embodiment of the third aspect of the present invention further provides an electrical connection device, including a housing, a detection and protection device disposed inside the housing, and a power cord as described in the second aspect embodiment above. The first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device. The first end and the fourth end are located inside the housing, and the output end of the power cord is used to connect to a load device. The third end and the sixth end are located between the housing and the load device.

[0089] According to the electrical connection device provided by some embodiments of the present invention, a wire clip for fixing the power cord is disposed at the connection between the power cord and the housing.

[0090] According to the electrical connection device provided by some embodiments of the present invention, the detection and protection device includes:

[0091] A switch module for controlling the electrical connection between the input end and the output end of the power cord;

[0092] A driving module, respectively connected to the first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, the fifth end, and the switch module, for controlling the switch module to disconnect the electrical connection when the first shield conductor structure detects a leakage current or an open circuit, and / or when the second shield conductor structure detects a leakage current or an open circuit.

[0093] Fourthly, an embodiment of the present invention provides an electrical device, including a load device and the electrical connection device as described in the third aspect embodiment above, and an output end of the power line is connected to the load device.

[0094] Other features and advantages of the present invention will be described in the subsequent description, and, in part, will become apparent from the description, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the description, the claims, and the drawings. Description of the Drawings

[0095] The drawings are used to provide a further understanding of the technical solution of the present invention, and constitute a part of the description. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention, and do not constitute a limitation to the technical solution of the present invention.

[0096] The present invention will be further described below in conjunction with the drawings and embodiments;

[0097] Figure 1 It is a schematic cross-sectional structure diagram of a current-carrying line provided by Embodiment 1 of the present invention;

[0098] Figure 2 It is a schematic side structure diagram of a current-carrying line provided by Embodiment 2 of the present invention;

[0099] Figure 3 It is a schematic side structure diagram of a current-carrying line provided by Embodiment 3 of the present invention;

[0100] Figure 4 It is a schematic cross-sectional structure diagram of a current-carrying line provided by Embodiment 4 of the present invention;

[0101] Figure 5 It is a schematic cross-sectional structure diagram of a current-carrying line provided by Embodiment 5 of the present invention;

[0102] Figure 6 It is a schematic side structure diagram of a current-carrying line provided by Embodiment 6 of the present invention;

[0103] Figure 7 It is a schematic cross-sectional structure diagram of a power line provided by Embodiment 7 of the present invention;

[0104] Figure 8 It is a schematic side structure diagram of a power line provided by Embodiment 8 of the present invention;

[0105] Figure 9a It is a schematic side structure diagram of a power line provided by Embodiment 9 of the present invention;

[0106] Figure 9b It is a schematic side structure diagram of a power line provided by Embodiment 10 of the present invention;

[0107] Figure 9c It is a schematic side view of the power cord provided in the eleventh embodiment of the present invention;

[0108] Figure 9d It is a schematic side view of the power cord provided in the twelfth embodiment of the present invention

[0109] Figure 10 It is a schematic side view of the power cord provided in the thirteenth embodiment of the present invention;

[0110] Figure 11 It is a schematic cross-sectional view of the power cord provided in the fourteenth embodiment of the present invention

[0111] Figure 12 It is a schematic side view of the power cord provided in the fifteenth embodiment of the present invention;

[0112] Figure 13 It is a schematic diagram of the structure of the electrical connection device provided in the sixteenth embodiment of the present invention;

[0113] Figure 14 It is a schematic circuit connection diagram of the detection and protection device of the electrical connection device and the power cord provided in the seventeenth embodiment of the present invention. Detailed implementation manners

[0114] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0115] In the description of the embodiments of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the number itself, above, below, within, etc. are understood as including the number itself, "at least one" means one or more, and "at least one of the following" and its similar expressions refer to any combination of these items, including any combination of single items or plural items. If there is a description of "first", "second", etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0116] It should be noted that words such as setting, installing, and connecting in the embodiments of the present invention should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the embodiments of the present invention in combination with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium.

[0117] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0118] A leakage current detection circuit breaker is a power connection device for electrical appliances. It can detect the leakage current of a power line group through a leakage current detection line and cut off the power connection of the electrical appliance when a certain leakage current is detected to ensure safe use. In recent years, in addition to detecting the leakage current of the power line through the leakage current detection line, higher safety detection requirements have been put forward for the leakage current detection circuit breaker, such as detecting whether there is an open circuit in the leakage current detection line. Therefore, for the power line used in conjunction with the leakage current detection circuit breaker, the internal leakage current detection line also needs to meet the safety detection requirements such as leakage detection and open circuit detection. However, the current power line structure cannot fully meet the aforementioned safety detection requirements, resulting in insufficient safety during use. Based on this, the embodiments of the present invention provide a current-carrying line, a power line, an electrical connection device, and an electrical device, which can improve the power supply safety.

[0119] The following further elaborates on the embodiments of the present invention with reference to the accompanying drawings.

[0120] Referring to Figure 1 and Figure 2 An embodiment of the first aspect of the present invention provides a current-carrying line 600, which includes a first current-carrying conductor 610, a first insulating layer 620, a first shielding conductor structure 630, and a second insulating layer 640, wherein:

[0121] The first insulating layer 620 wraps the first current-carrying conductor 610;

[0122] The first shielding conductor structure 630 is used to detect the leakage current from the first current-carrying conductor 610. The first shielding conductor structure 630 includes a first shielding layer 631 that wraps the first insulating layer 620 and a first conductor 632 that is in close contact with the first shielding layer 631. The first conductor 632 is used to transmit the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600;

[0123] The second insulating layer 640 wraps outside the first shielding conductor structure 630.

[0124] In the current-carrying line 600 provided in the embodiment, the first current-carrying conductor 610 is used to provide working current for the load device; the first insulating layer 620 wraps the first current-carrying conductor 610 to prevent electric leakage; a first shielding conductor structure 630 is arranged outside the first insulating layer 620, which can effectively detect the possible electric leakage when the first insulating layer 620 is damaged, and transmit a signal to the outside of the current-carrying line 600 to cut off the power supply, avoiding the accident of electric shock to personnel and improving safety; wherein, the first shielding conductor structure 630 includes a first shielding layer 631 and a first conductor 632. The first shielding layer 631 wraps the first current-carrying conductor 610 to comprehensively detect the leakage current on the entire first current-carrying conductor 610, and the first conductor 632 in close contact with the first shielding layer 631 serves to conveniently and reliably transmit the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600. In addition, a second insulating layer 640 is used to wrap the first shielding conductor structure 630, making the contact between the first shielding layer 631 and the first conductor 632 closer, so that the electrical signal on the first shielding layer 631 can be more reliably transmitted to the first conductor 632; therefore, the first shielding conductor structure 630 composed of the first shielding layer 631 and the first conductor 632 has the advantages of comprehensive detection and convenient and reliable electrical signal transmission, thereby improving the power supply safety of the current-carrying line 600.

[0125] Referring to Figure 2 , in the current-carrying line 600 provided in some embodiments of the present invention, the first shielding conductor structure 630 includes a first end close to the input end of the first current-carrying conductor 610, a second end close to the output end of the first current-carrying conductor 610, and a third end located between the first end and the second end. The current-carrying line 600 further includes a first metal conductor 650 led out from the third end, and the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through.

[0126] It can be understood that, taking the placement direction of the current-carrying line 600 shown in Figure 2 as an example, if the left end of the current-carrying line 600 is used to connect to the plug providing the power supply and the right end is used to connect to the load device, then the first end of the first shielding conductor structure 630 is located on the left side shown in Figure 2 , the second end of the first shielding conductor structure 630 is located on the right side shown in Figure 2 , and the third end is located between the first end and the second end, for example, inside the first opening 641 shown in Figure 2 .

[0127] In this embodiment, the first metal conductor 650 led out from the third end can transfer the electrical signal on the first shielding conductor structure 630 from the third end to the outside of the current-carrying line 600. In this way, for the first shielding conductor structure 630, it can transfer the electrical signal from the first end on the left to the outside of the current-carrying line 600, transfer the electrical signal from the second end on the right to the outside of the current-carrying line 600, and also transfer the electrical signal from the third end in the middle to the outside of the current-carrying line 600, enabling leakage detection of the current-carrying line 600 to be realized at different positions; moreover, the first shielding conductor structure 630 can also be divided into two segments. The first segment is located between the first end on the left and the third end in the middle, and the second segment is located between the third end in the middle and the second end on the right. Furthermore, disconnection detection can be performed on these two segments respectively, so as to meet various requirements for the safety detection of the current-carrying line 600.

[0128] In addition, the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through, that is, the second insulating layer 640 is broken at the first opening 641, while the integrity of the second insulating layer 640 is ensured as much as possible at other positions to avoid reducing the protection effect of the second insulating layer 640 on the internal first current-carrying conductor 610 and the first shielding conductor structure 630.

[0129] Refer to Figure 3 , in the current-carrying line 600 provided in some embodiments of the present invention, an insulating outer skin 651 is provided outside the first metal conductor 650. It can be understood that Figure 3 the embodiment shown is based on Figure 2 and an insulating outer skin 651 provided outside the first metal conductor 650 is added, and the structure of the rest part is the same as that of the current-carrying line 600 shown in Figure 2 .

[0130] In this embodiment, adding the insulating outer skin 651 can protect the first metal conductor 650, which can not only avoid the electrical signal transmitted on the first metal conductor 650 from being interfered by others, but also avoid the first metal conductor 650 being easily broken due to the action of external force.

[0131] In the current-carrying line 600 provided in some embodiments of the present invention, the first conductor 632 is located between the first insulating layer 620 and the first shielding layer 631, for example, refer to Figure 4 shown; or the first conductor 632 is located between the first shielding layer 631 and the second insulating layer 640, for example, refer to Figure 1 shown.

[0132] It can be understood that in this embodiment, the relative positions of the first shielding layer 631 and the first conductor 632 that constitute the first shielding conductor structure 630 can be interchanged, as long as it is ensured that they are in close contact with each other and have a reliable electrical connection relationship to ensure the stability of electrical signal transmission.

[0133] In the current-carrying line 600 provided in some embodiments of the present invention, the first shielding layer 631 is made of a single-sided conductive flexible material; the first shielding layer 631 is wrapped around the first insulating layer 620 in a helical winding manner, or is wrapped around the first insulating layer 620 parallel to the axis of the first current-carrying conductor 610.

[0134] The two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface respectively. Therefore, in order to ensure a reliable electrical connection relationship between the first shielding layer 631 and the first conductor 632, the conductive surface of the first shielding layer 631 needs to face the first conductor 632; for example, for Figure 1 the embodiment shown, the first conductor 632 is located between the first shielding layer 631 and the second insulating layer 640. At this time, the insulating surface of the first shielding layer 631 wraps the first insulating layer 620 inward, and the conductive surface of the first shielding layer 631 faces outward and contacts the first conductor 632; for Figure 4 the embodiment shown, the first conductor 632 is located between the first insulating layer 620 and the first shielding layer 631. At this time, the conductive surface of the first shielding layer 631 wraps the first insulating layer 620 and the first conductor 632 inward at the same time, so that the conductive surface of the first shielding layer 631 is in good contact with the first conductor 632.

[0135] In the current-carrying line 600 provided in some embodiments of the present invention, the first shielding layer 631 is wrapped around the first insulating layer 620 in a manner of being woven into a net by multiple strands of conductors.

[0136] Compared with the above embodiment where a single-sided conductive flexible material is used as the first shielding layer 631, this embodiment provides a first shielding layer 631 made of a different material. Using multiple strands of conductors woven into a net as the first shielding layer 631, several strands of conductors can be drawn out from the first shielding layer 631 and passed through the first opening 641 as the first metal conductor 650. That is, when the first metal conductor 650 needs to be led out from the third end, only an opening 641 needs to be made in the second insulating layer 640, and then several strands of conductors can be drawn out from the first shielding layer 631 woven into a net by multiple strands of conductors.

[0137] It should be noted that the first conductor 632 can be a single-strand wire or a multi-strand wire. Therefore, the first metal conductor 650 can also be several strands of wires drawn out from the first conductor 632 at the first opening 641.

[0138] It can be understood that, in one embodiment, the first conductor 632 is made of a tin wire. This is because the current-carrying line 600 is generally connected to the PCB board. Therefore, the electrical signals transmitted by the first conductor 632 to the outside of the current-carrying line 600 often reach the PCB board. When the first conductor 632 is made of a tin wire, the first conductor 632 can be directly soldered and fixed to the soldering pins of the PCB board by soldering, which can simplify the operation steps of electrically connecting the current-carrying line 600 to the PCB board and improve the production efficiency during processing.

[0139] In addition, the first conductor 632 can be wrapped around the outside of the first insulating layer 620 in a spiral winding manner. Specifically, in Figure 1 the illustrated embodiment, the first shielding layer 631 first wraps the first insulating layer 620, and then the first conductor 632 is wound around the outside of the first shielding layer 631. While in Figure 4 the illustrated embodiment, the first conductor 632 is first wound around the outside of the first insulating layer 620, and then the first shielding layer 631 is wrapped around the outside of the first conductor 632; the first conductor 632 can also be arranged parallel to the axis of the first current-carrying conductor 610 on the outside of the first insulating layer 620. Specifically, in Figure 1 the illustrated embodiment, the first conductor 632 is arranged parallel between the first shielding layer 631 and the second insulating layer 640. In Figure 4 the illustrated embodiment, the first conductor 632 is arranged parallel between the first insulating layer 620 and the first shielding layer 631.

[0140] It can be understood that the first metal conductor 650 can also be an additionally provided conductor or wire. After a first opening 641 is provided on the second insulating layer 640 of the current-carrying line 600, the additionally provided conductor or wire can be connected to the first shielding conductor structure 630 at the first opening 641. The connection method between the additionally provided conductor or wire and the first shielding conductor structure 630 can be soldering, or the additionally provided conductor or wire can be directly twisted together with several strands of the conductor of the first shielding layer 631 or the first conductor 632.

[0141] In the current-carrying line 600 provided in some embodiments of the present invention, the first shielding layer 631 includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a mesh by multiple strands of conductors.

[0142] In this embodiment, the first shielding layer 631 includes both the aforementioned single-sided conductive flexible material and the shielding layer woven into a mesh by multiple strands of conductors, which can improve the reliability of the first shielding layer 631. The first shielding layer 631 can more reliably detect the leakage current of the first current-carrying conductor 610 and is not likely to break or disconnect.

[0143] In addition, in Figures 1 to 4In each of the illustrated embodiments, the second insulating layer 640 can be a flexible insulating film material and wound around the outside of the first shielding conductor structure 630 or wrapped around the first shielding conductor structure 630 in parallel along the axis direction of the first current-carrying conductor 610; the second insulating layer 640 can also be an injection-molded insulating outer skin wrapped around the outside of the first shielding conductor structure 630. It can be understood that the second insulating layer 640 can also first use a flexible insulating film material and be wound around the outside of the first shielding conductor structure 630 or wrapped around the first shielding conductor structure 630 in parallel along the axis direction of the first current-carrying conductor 610, and then use an injection-molded insulating outer skin to wrap around the outside of the flexible insulating film material; such a setting can further improve the protection effect of the second insulating layer 640 on the first current-carrying conductor 610 and the first shielding conductor structure 630 inside the current-carrying line 600.

[0144] In addition, another embodiment of the first aspect of the present invention further provides a current-carrying line 600, including a first current-carrying conductor 610, a first insulating layer 620, a first shielding conductor structure 630, a second insulating layer 640, and a first metal conductor 650, wherein:

[0145] The first insulating layer 620 wraps the first current-carrying conductor 610;

[0146] The first shielding conductor structure 630 is used to detect the leakage current from the first current-carrying conductor 610. The first shielding conductor structure 630 includes a first shielding layer 631 that wraps the first insulating layer 620; the first shielding conductor structure 630 includes a first end near the input end of the first current-carrying conductor 610, a second end near the output end of the first current-carrying conductor 610, and a third end located between the first end and the second end;

[0147] The second insulating layer 640 wraps around the outside of the first shielding conductor structure 630;

[0148] The first metal conductor 650 is led out from the third end, and the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through.

[0149] It can be understood that the current-carrying line provided in this embodiment, compared with the current-carrying lines in the foregoing various embodiments, the difference is only that the first shielding conductor structure 630 in this embodiment does not include the first conductor 632. That is, deleting the first conductor 632 in Figure 1 and Figure 2 can obtain the schematic diagram of the current-carrying line of this embodiment.

[0150] In the current-carrying line provided by the embodiment of the present invention, the first current-carrying conductor 610 is used to provide working current for the load device; the first insulating layer 620 wraps the first current-carrying conductor 610 to prevent electric leakage; a first shielding conductor structure 630 is disposed outside the first insulating layer 620, which can effectively detect the possible electric leakage when the first insulating layer 620 is damaged, and transmit a signal to the outside of the current-carrying line 600 to cut off the power supply, avoiding accidental electric shock to personnel and improving safety; by providing a first opening 641 in the second insulating layer 640 and leading out a first metal conductor 650 from the third end of the first shielding conductor structure 630, the first metal conductor 650 passes through the first opening 641, so that the first shielding conductor structure 630 can transmit an electrical signal to the outside at the first end close to the input end of the first current-carrying conductor 610, and can also transmit an electrical signal to the outside at the second end close to the output end of the first current-carrying conductor 610, and can also transmit an electrical signal to the outside through the first metal conductor 650 at the third end, that is, it can transmit electrical signals to the outside at multiple different positions at the same time, realizing the segmented detection of the first shielding conductor structure 630, providing more detection paths, and being able to more comprehensively and reliably realize the safety detection of the current-carrying line, thereby improving the power supply safety of the current-carrying line.

[0151] Referring to Figure 5 and Figure 6 , another embodiment of the first aspect of the present invention further provides a current-carrying line 600, including a first current-carrying conductor 610, a first insulating layer 620, a first shielding conductor structure 630, and a second insulating layer 640, wherein:

[0152] The first insulating layer 620 wraps the first current-carrying conductor 610;

[0153] The first shielding conductor structure 630 is used to detect the leakage current from the first current-carrying conductor 610. The first shielding conductor structure 630 includes a first shielding layer 631 that wraps the first insulating layer 620, a second shielding layer 633 that wraps the first shielding layer 631, and a first conductor 632 located between the first shielding layer 631 and the second shielding layer 633. The first conductor 632 is used to transmit the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600;

[0154] The second insulating layer 640 wraps outside the first shielding conductor structure 630.

[0155] It can be understood that Figure 5 and Figure 6 the embodiments shown in Figures 1 to 4In the illustrated embodiment, the main difference is that the first shielding conductor structure 630 further includes a second shielding layer 633 in addition to the first shielding layer 631 and the first conductor 632, enabling the first shielding conductor structure 630 to more reliably detect the leakage current of the first current-carrying conductor 610 and making it less likely to break or disconnect.

[0156] For the current-carrying line 600 provided according to an embodiment of the present invention, the first current-carrying conductor 610 is used to provide working current for the load device; the first insulating layer 620 wraps the first current-carrying conductor 610 to prevent leakage; the first shielding conductor structure 630 is disposed outside the first insulating layer 620, which can effectively detect the possible leakage when the first insulating layer 620 is damaged and transmit a signal to the outside of the current-carrying line 600 to cut off the power supply, avoiding the accidental occurrence of electric shock to personnel and improving safety; among them, the first shielding conductor structure 630 is composed of three parts: the first shielding layer 631, the first conductor 632, and the second shielding layer 633. Both the first shielding layer 631 and the second shielding layer 633 wrap the first current-carrying conductor to comprehensively detect the leakage current on the entire first current-carrying conductor 610. The structure with multiple shielding layers can improve the reliability of leakage detection; the first conductor 632 serves to conveniently and reliably transmit the electrical signal on the first shielding conductor structure 630 to the outside of the current-carrying line 600. In addition, the second insulating layer 640 is used to wrap the first shielding conductor structure 630, making the contact between the first conductor 632 and the first shielding layer 631 and the second shielding layer 633 closer, enabling the electrical signals on the first shielding layer 631 and the second shielding layer 633 to be more reliably transmitted to the first conductor 632; therefore, the first shielding conductor structure 630 composed of the combination of the first shielding layer 631, the first conductor 632, and the second shielding layer 633 has the advantages of comprehensive and reliable detection and convenient and reliable electrical signal transmission, thereby improving the power supply safety of the current-carrying line 600.

[0157] Refer to Figure 6 , in the current-carrying line 600 provided in some embodiments of the present invention, the first shielding conductor structure 630 includes a first end near the input end of the first current-carrying conductor 610, a second end near the output end of the first current-carrying conductor 610, and a third end between the first end and the second end. The current-carrying line 600 further includes a first metal conductor 650 led out from the third end, and the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through.

[0158] It can be understood that taking Figure 6 the placement direction of the illustrated current-carrying line 600 as an example, if the left end of the current-carrying line 600 is used to connect to the plug providing power, and the right end is used to connect to the load device, then the first end of the first shielding conductor structure 630 is located at Figure 6On the left side as shown, the second end of the first shielding conductor structure 630 is located at Figure 6 On the right side as shown, the third end is located between the first end and the second end, for example, located at Figure 6 inside the first opening 641 as shown.

[0159] In this embodiment, the first metal conductor 650 led out from the third end can transfer the electrical signal on the first shielding conductor structure 630 from the third end to the outside of the current-carrying line 600. In this way, for the first shielding conductor structure 630, the electrical signal can be transferred from the first end on the left side to the outside of the current-carrying line 600, from the second end on the right side to the outside of the current-carrying line 600, and also from the third end in the middle to the outside of the current-carrying line 600, enabling the leakage detection of the current-carrying line 600 to be realized at different positions; moreover, the first shielding conductor structure 630 can also be divided into two segments, the first segment is between the first end on the left side and the third end in the middle, and the second segment is between the third end in the middle and the second end on the right side. Furthermore, the disconnection detection can be carried out for these two segments respectively, so as to meet various requirements for the safety detection of the current-carrying line 600.

[0160] In addition, the second insulating layer 640 is provided with a first opening 641 for the first metal conductor 650 to pass through, that is, the second insulating layer 640 is broken at the first opening 641, while the integrity of the second insulating layer 640 is ensured as much as possible at other positions to avoid reducing the protection effect of the second insulating layer 640 on the internal first current-carrying conductor 610 and the first shielding conductor structure 630.

[0161] Referring to Figure 6 , in the current-carrying line 600 provided in some embodiments of the present invention, according to the current-carrying line 600 provided in some embodiments of the present invention, an insulating outer skin 651 is provided outside the first metal conductor 650.

[0162] In this embodiment, adding the insulating outer skin 651 can protect the first metal conductor 650, which can not only avoid the electrical signal transmitted on the first metal conductor 650 from being interfered by others, but also avoid the first metal conductor 650 being easily broken due to the action of external force.

[0163] According to the current-carrying line 600 provided in some embodiments of the present invention, the first shielding layer 631 is made of a single-sided conductive flexible material. The insulating surface of the first shielding layer 631 faces inward and contacts the outer surface of the first insulating layer 620, and the conductive surface of the first shielding layer 631 faces outward and contacts the first conductor 632 and the second shielding layer 633; the second shielding layer 633 is wrapped around the first shielding layer 631 in a way of being woven into a net by multiple strands of conductors.

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

[0165] According to the current-carrying line 600 provided by some embodiments of the present invention, the first shielding layer 631 is woven into a net shape by multiple conductors to wrap the first insulating layer 620; the second shielding layer 633 is made of single-sided conductive flexible material. The conductive surface of the second shielding layer 633 faces inward and contacts the first conductor 632 and the first shielding layer 631, and the insulating surface of the second shielding layer 633 faces outward and contacts the inner surface of the second insulating layer 640.

[0166] Similarly, the two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface respectively. The insulating surface of the second shielding layer 633 faces outward and the conductive surface faces inward and outward, which can ensure a reliable electrical connection relationship between the second shielding layer 633, the first conductor 632, and the first shielding layer 631.

[0167] According to the current-carrying line 600 provided by some embodiments of the present invention, the first conductor 632 is a single-strand wire or a multi-strand wire; the first conductor 632 is wrapped around the outside of the first insulating layer 620 in a spiral winding manner, or is arranged parallel to the axis of the first current-carrying conductor 610 outside the first insulating layer 620.

[0168] It can be understood that in one embodiment, the first conductor 632 is a tin wire. This is because the current-carrying line 600 is generally connected to the PCB board. Therefore, the electrical signal transmitted by the first conductor 632 to the outside of the current-carrying line 600 often reaches the PCB board. When the first conductor 632 is a tin wire, the first conductor 632 can be directly welded and fixed to the welding pins of the PCB board by soldering, which can simplify the operation steps of electrically connecting the current-carrying line 600 and the PCB board and improve the production efficiency during processing.

[0169] Specifically, in Figure 5 the shown embodiment, the first conductor 632 is wrapped around the outside of the first shielding layer 631 in a spiral winding manner, and the second shielding layer 633 is then wrapped around the outside of the first conductor 632; or, the first conductor 632 is arranged parallel between the first shielding layer 631 and the second shielding layer 633.

[0170] According to the current-carrying line 600 provided by some embodiments of the present invention, the second insulating layer 640 can be a flexible insulating film material and wound around the outside of the first shielding conductor structure 630 or parallelly wrapped around the first shielding conductor structure 630 along the axis of the first current-carrying conductor 610; the second insulating layer 640 can also be an injection-molded insulating outer skin.

[0171] It can be understood that the second insulating layer 640 may first use a flexible insulating film material and wrap it around the outside of the first shielding conductor structure 630, or the flexible insulating film material may wrap the first shielding conductor structure 630 in parallel along the axis direction of the first current-carrying conductor 610, and then an injection-molded insulating outer skin is used to wrap the outside of the flexible insulating film material. Such an arrangement can further improve the protection effect of the second insulating layer 640 on the first current-carrying conductor 610 and the first shielding conductor structure 630 inside the current-carrying line 600.

[0172] The above is the introduction of various embodiments of the first aspect of the present invention regarding the current-carrying line; next, various embodiments of the second aspect of the present invention regarding the power line will be further introduced with reference to the accompanying drawings.

[0173] Refer to Figure 7 and Figure 8 According to an embodiment of the second aspect of the present invention, a power line is provided, including a first current-carrying line 100, a second current-carrying line 200, and a fifth insulating layer 500, wherein:

[0174] The first current-carrying line 100 includes a first current-carrying conductor 110, a first insulating layer 120 wrapping the first current-carrying conductor 110, and a first shielding conductor structure 130. The first shielding conductor structure 130 is used to detect the leakage current from the first current-carrying conductor 110. The first shielding conductor structure 130 includes a first shielding layer 131 wrapping the first insulating layer 120 and a first conductor 132 closely attached to the first shielding layer 131. The first conductor 132 is used to transmit the electrical signal on the first shielding conductor structure 130 to the outside of the current-carrying line;

[0175] The second current-carrying line 200 includes a second current-carrying conductor 210, a third insulating layer 220 wrapping the second current-carrying conductor 210, and a second shielding conductor structure 230. The second shielding conductor structure 230 is used to detect the leakage current from the second current-carrying conductor 210. The second shielding conductor structure 230 includes a third shielding layer 231 wrapping the third insulating layer 220 and a second conductor 232 closely attached to the third shielding layer 231. The second conductor 232 is used to transmit the electrical signal on the second shielding conductor structure 230 to the outside of the current-carrying line;

[0176] The fifth insulating layer 500 wraps the first current-carrying line 100 and the second current-carrying line 200;

[0177] The first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other inside the fifth insulating layer 500 so that the first shielding conductor structure 130 and the second shielding conductor structure 230 are insulated from each other.

[0178] According to the power cord provided by the embodiments of the present invention, in the first current-carrying line 100 and the second current-carrying line 200 of the power cord, the first current-carrying conductor 110 and the second current-carrying conductor 210 are used to provide working current for the load device; the first insulating layer 120 wrapping the first current-carrying conductor 110 and the third insulating layer 220 wrapping the second current-carrying conductor 210 can avoid electric leakage; arranging the first shielding conductor structure 130 outside the first insulating layer 120 and arranging the second shielding conductor structure 230 outside the third insulating layer 220 can effectively detect the possible electric leakage when the first insulating layer 120 and the third insulating layer 220 are damaged, and transmit signals to the outside of the current-carrying line to cut off the power supply, avoiding the occurrence of accidental electric shock to personnel and improving safety; wherein, the first shielding conductor structure 130 includes a first shielding layer 131 and a first conductor 132, the second shielding conductor structure 230 includes a third shielding layer 231 and a second conductor 232, the first shielding layer 131 wrapping the first current-carrying conductor 110 serves to comprehensively detect the leakage current on the entire first current-carrying conductor 110, the third shielding layer 231 wrapping the second current-carrying conductor 210 serves to comprehensively detect the leakage current on the entire second current-carrying conductor 210, and the first conductor 132 in close contact with the first shielding layer 131 serves to conveniently and reliably transmit the electrical signal on the first shielding conductor structure 130 to the outside of the first current-carrying line 100, and the second conductor 232 in close contact with the third shielding layer 231 serves to conveniently and reliably transmit the electrical signal on the second shielding conductor structure 230 to the outside of the second current-carrying line 200; therefore, the first shielding conductor structure 130 composed of the combination of the first shielding layer 131 and the first conductor 132, and the second shielding conductor structure 230 composed of the combination of the third shielding layer 231 and the second conductor 232 have the advantages of comprehensive detection and convenient and reliable transmission of electrical signals, thereby being able to improve the power supply safety of the first current-carrying line 100 and the second current-carrying line 200, and further improving the power supply safety of the power cord

[0179] Referring to Figure 7 and Figure 8 , in the power cord provided by some embodiments of the present invention, the first current-carrying line 100 further includes a second insulating layer 140 wrapping outside the first shielding conductor structure 130, and the second current-carrying line 200 further includes a fourth insulating layer 240 wrapping outside the second shielding conductor structure 230.

[0180] It can be understood that using the second insulating layer 140 to wrap the first shielding conductor structure 130 and using the fourth insulating layer 240 to wrap the second shielding conductor structure 230 can insulate the first shielding conductor structure 130 and the second shielding conductor structure 230 from each other, avoiding mutual interference between the leakage detection of the first current-carrying line 100 and the leakage detection of the second current-carrying line 200.

[0181] It should be noted that Figure 7 andFigure 8 In the illustrated embodiment, the second insulating layer 140 and the fourth insulating layer 240 exist simultaneously. In some other extended embodiments, either the second insulating layer 140 or the fourth insulating layer 240 may not be provided. When only one of the second insulating layer 140 and the fourth insulating layer 240 exists, it is also possible to insulate the first shielding conductor structure 130 from the second shielding conductor structure 230, avoiding interference between the leakage detection of the first current-carrying line 100 and the leakage detection of the second current-carrying line 200. In subsequent other embodiments, the case where both the second insulating layer 140 and the fourth insulating layer 240 are provided is taken as an example for description and introduction, but it can also be extended to the case where either the second insulating layer 140 or the fourth insulating layer 240 is not provided.

[0182] In addition, in the power cord provided in some embodiments of the present invention, the positions inside the fifth insulating layer 500 other than the first current-carrying line 100 and the second current-carrying line 200 are filled with an insulating material. It can be understood that when the fifth insulating layer 500 is filled with an insulating material and the first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other inside the fifth insulating layer 500, it is also possible to insulate the first shielding conductor structure 130 from the second shielding conductor structure 230 without providing the second insulating layer 140 and the fourth insulating layer 240 at the same time.

[0183] Refer to Figure 7 , in the power cord provided in some embodiments of the present invention, it further includes a third current-carrying line 700 provided inside the fifth insulating layer 500. Among them, the first current-carrying line 100 can be used as a live wire, the second current-carrying line 200 can be used as a neutral wire or as another live wire, and the third current-carrying line 700 can be used as a ground wire. The third current-carrying line 700 may be provided with an insulating outer skin.

[0184] In the power cord provided in some embodiments of the present invention, the first shielding conductor structure 130 includes a first end close to the input end of the power cord, a second end close to the output end of the power cord, and a third end located between the first end and the second end; the second shielding conductor structure 230 includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end;

[0185] The first current-carrying line 100 and the second current-carrying line 200 also satisfy any one of the following four cases:

[0186] Case 1: The first current-carrying line 100 further includes a first metal conductor 150 led out from the third end, and the first metal conductor 150 is connected to the sixth end; for example, refer to Figure 9a as shown;

[0187] Case 2: The second current-carrying line 200 further includes a second metal conductor 250 led out from the sixth end, and the second metal conductor 250 is connected to the third end; for example, refer to Figure 9b as shown;

[0188] Case 3: The first current-carrying line 100 further includes a first metal conductor 150 led out from the third end, and the second current-carrying line 200 further includes a second metal conductor 250 led out from the sixth end. The first metal conductor 150 is connected to the second metal conductor 250. For example, refer to Figure 9c as shown;

[0189] Case 4: The power line is further provided with a third metal conductor 900. Both ends of the third metal conductor 900 are respectively connected to the third end and the sixth end. For example, refer to Figure 9d as shown.

[0190] For the power line provided by some embodiments of the present invention, when the second insulating layer 140 exists, the second insulating layer 140 is provided with a first opening 141 for the first metal conductor 150 to pass through; when the fourth insulating layer 240 exists, the fourth insulating layer 240 is provided with a second opening 241 for the second metal conductor 250 to pass through.

[0191] It can be understood that taking the Figure 8 placement direction of the power line shown as an example, if the left end of the power line is used to connect to a plug providing power, and the right end is used to connect to a load device:

[0192] then the first end of the first shielding conductor structure 130 is located on the Figure 8 left side shown, and the second end of the first shielding conductor structure 130 is located on the Figure 8 right side shown. The third end is located between the first end and the second end. For example, it is located at Figure 8inside the first opening 141 shown; the first metal conductor 150 led out from the third end can transfer the electrical signal on the first shielding conductor structure 130 from the third end to the outside of the first current-carrying line 100. In this way, for the first shielding conductor structure 130, it can transfer the electrical signal from the first end on the left to the outside of the first current-carrying line 100, transfer the electrical signal from the second end on the right to the outside of the first current-carrying line 100, and transfer the electrical signal from the third end in the middle to the outside of the first current-carrying line 100, enabling the leakage detection of the first current-carrying line 100 to be realized at different positions; moreover, the first shielding conductor structure 130 can also be divided into two segments. The first segment is between the first end on the left and the third end in the middle, and the second segment is between the third end in the middle and the second end on the right. Furthermore, the disconnection detection can be performed on these two segments respectively, so as to meet the requirements of various safety detections. In addition, the second insulating layer 140 is provided with the first opening 141 for the first metal conductor 150 to pass through, that is, the second insulating layer 140 is broken at the first opening 141, while the integrity of the second insulating layer 140 is ensured as much as possible at other positions to avoid reducing the protection effect of the second insulating layer 140 on the internal first current-carrying conductor 110 and the first shielding conductor structure 130.

[0193] Similarly, the fourth end of the second shielding conductor structure 230 is located Figure 8 on the left side shown, and the fifth end of the second shielding conductor structure 230 is located Figure 8 on the right side shown, and the sixth end is between the fourth end and the fifth end, for example, located Figure 8 inside the second opening 241 shown; the second metal conductor 250 led out from the sixth end can transfer the electrical signal on the second shielding conductor structure 230 from the sixth end to the outside of the second current-carrying line 200. In this way, for the second shielding conductor structure 230, it can transfer the electrical signal from the fourth end on the left to the outside of the second current-carrying line 200, transfer the electrical signal from the fifth end on the right to the outside of the second current-carrying line 200, and transfer the electrical signal from the sixth end in the middle to the outside of the second current-carrying line 200, enabling the leakage detection of the second current-carrying line 200 to be realized at different positions; moreover, the second shielding conductor structure 230 can also be divided into two segments. The first segment is between the fourth end on the left and the sixth end in the middle, and the second segment is between the sixth end in the middle and the fifth end on the right. Furthermore, the disconnection detection can be performed on these two segments respectively, so as to meet the requirements of various safety detections. In addition, the fourth insulating layer 240 is provided with the second opening 241 for the second metal conductor 250 to pass through, that is, the fourth insulating layer 240 is broken at the second opening 241, while the integrity of the fourth insulating layer 240 is ensured as much as possible at other positions to avoid reducing the protection effect of the fourth insulating layer 240 on the internal second current-carrying conductor 210 and the second shielding conductor structure 230.

[0194] It should also be noted that, taking Figure 9c as an example, the first metal conductor 150 is connected to the second metal conductor 250, that is, the third end of the first shielding conductor structure 130 is electrically connected to the sixth end of the second shielding conductor structure 230, so that there is a connection point between the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200, and the two shielding conductor structures are no longer independently separated. For example, the first segment between the first end on the left and the third end in the middle of the first shielding conductor structure 130 is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250. Similarly, the second segment between the third end in the middle and the second end on the right of the first shielding conductor structure 130 is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, greatly enriching the feasibility and flexibility of the power line for leakage detection and open-circuit detection of the shielding structure, and being beneficial to improving the power supply safety.

[0195] Referring to Figure 8 , in the power line provided by some embodiments of the present invention, insulating sheaths are provided outside both the first metal conductor 150 and the second metal conductor 250.

[0196] In this embodiment, adding insulating sheaths outside the first metal conductor 150 and the second metal conductor 250 can protect the first metal conductor 150 and the second metal conductor 250. It can not only prevent the electrical signals transmitted on the first metal conductor 150 and the second metal conductor 250 from being interfered by others, but also avoid the first metal conductor 150 and the second metal conductor 250 from being easily broken due to external forces.

[0197] In the power line provided by some embodiments of the present invention, for example, in Case 1, the first metal conductor 150 directly extends from the second opening 241 to the sixth end of the second shielding conductor structure 230 and is welded to the sixth end to achieve electrical connection. For example, referring to Figure 9a as shown; in Case 2, the second metal conductor directly extends from the first opening 141 to the third end of the first shielding conductor structure 130 and is welded to the third end to achieve electrical connection. For example, referring to Figure 9b as shown; in Case 3, the first metal conductor 150 and the second metal conductor are welded between the third end and the sixth end to achieve electrical connection. For example, referring to Figure 9cAs shown; in Case 4, one end of the third metal conductor 900 extends from the first opening 141 to the third end of the first shielding conductor structure 130 and is welded to the third end to achieve electrical connection, and the other end extends from the second opening 241 to the sixth end of the second shielding conductor structure 230 and is welded to the sixth end to achieve electrical connection. For example, refer to Figure 9d As shown.

[0198] It can be understood that the welding positions of the first metal conductor 150 and the second metal conductor 250 can be selected according to the convenience during welding.

[0199] In the power cord provided in some embodiments of the present invention, the first metal conductor 150 and the second metal conductor 250 extend to a position close to the input end of the power cord. For example, refer to Figure 8 As shown; or the first metal conductor 150 and the second metal conductor 250 extend to a position close to the output end of the power cord to achieve electrical connection. For example, refer to Figure 10 As shown.

[0200] It can be understood that when the first metal conductor 150 and the second metal conductor 250 extend to a position close to the input end of the power cord or a position close to the output end of the power cord to achieve electrical connection, they can be directly welded together to achieve electrical connection, or can be short-circuited together through a terminal block, or can be connected to a PCB board and achieve electrical connection through the PCB board.

[0201] Refer to Figure 8 , in the power cord provided in some embodiments of the present invention, the first conductor 132 and the second conductor 232 are multi-strand wires. The first metal conductor 150 is obtained by leading out several strands of wires from the third end of the first conductor 132; the second metal conductor 250 is obtained by leading out several strands of wires from the sixth end of the second conductor 232.

[0202] In this embodiment, the first conductor 132 is a stranded wire, and several strands are led out from the third end as the first metal conductor 150. Therefore, the first conductor 132 in the first shielding conductor structure 130 can transmit electrical signals to the outside of the first current-carrying line 100 at the first end, can also transmit electrical signals to the outside of the first current-carrying line 100 at the second end, and can also transmit electrical signals to the outside of the first current-carrying line 100 at the third end. Similarly, the second conductor 232 is a stranded wire, and several strands are led out from the sixth end as the second metal conductor 250. Therefore, the second conductor 232 in the second shielding conductor structure 230 can transmit electrical signals to the outside of the second current-carrying line 200 at the fourth end, can also transmit electrical signals to the outside of the second current-carrying line 200 at the fifth end, and can also transmit electrical signals to the outside of the second current-carrying line 200 at the sixth end. It can be understood that the first metal conductor 150 and the second metal conductor 250 obtained in this way have the advantages of convenient operation and reliable signal transmission.

[0203] It can be understood that in one embodiment, the first conductor 132 and the second conductor 232 are tin wires. This is because the power line is generally connected to the PCB board. Therefore, the electrical signals transmitted by the first conductor 132 to the outside of the first current-carrying line 100 and the electrical signals transmitted by the second conductor 232 to the outside of the second current-carrying line 200 often reach the PCB board. When the first conductor 132 and the second conductor 232 are tin wires, the first conductor 132 and the second conductor 232 can be directly welded and fixed to the welding pins of the PCB board by soldering, which can simplify the operation steps of electrically connecting the power line and the PCB board and improve the production efficiency during processing.

[0204] In the power line provided in some embodiments of the present invention, the first shielding layer 131 wraps the first insulating layer 120 in a manner of braiding a plurality of conductors into a mesh, and the third shielding layer 231 wraps the third insulating layer 220 in a manner of braiding a plurality of conductors into a mesh. The first metal conductor 150 is obtained by leading out several strands of conductors from the third end in the first shielding layer 131, and the second metal conductor 250 is obtained by leading out several strands of conductors from the sixth end in the third shielding layer 231.

[0205] It can be understood that different from selecting several strands of wires from the first conductor 132 and leading them out from the third end as the first metal conductor 150 and selecting several strands of wires from the second conductor 232 and leading them out from the sixth end as the second metal conductor 250 as described above, in this embodiment, several strands of conductors are selected from the first shielding layer 131 and led out from the third end as the first metal conductor 150 and several strands of conductors are selected from the third shielding layer 231 and led out from the sixth end as the second metal conductor 250, which can achieve the same effect and has the advantages of convenient operation and reliable signal transmission.

[0206] In the power cord provided by some embodiments of the present invention, the first shielding layer 131 is made of a single-sided conductive flexible material; the first shielding layer 131 wraps the first insulating layer 120 in a helical winding manner, or wraps the first insulating layer 120 parallel to the axis of the first current-carrying conductor 110; the third shielding layer 231 is made of a single-sided conductive flexible material; the third shielding layer 231 wraps the third insulating layer 220 in a helical winding manner, or wraps the third insulating layer 220 parallel to the axis of the second current-carrying conductor 210.

[0207] The two sides of the single-sided conductive flexible material are an insulating surface and a conductive surface respectively. Therefore, in order to ensure a reliable electrical connection relationship between the first shielding layer 131 and the first conductor 132, the conductive surface of the first shielding layer 131 needs to face the first conductor 132; for example, for Figure 7 the embodiment shown, the first conductor 132 is located between the first shielding layer 131 and the second insulating layer 140. At this time, the insulating surface of the first shielding layer 131 wraps the first insulating layer 120 inward, and the conductive surface of the first shielding layer 131 faces outward and contacts the first conductor 132; it can be understood that for the embodiment where the first conductor 132 is located between the first insulating layer 120 and the first shielding layer 131, at this time, the conductive surface of the first shielding layer 131 wraps the first insulating layer 120 and the first conductor 132 inward at the same time, so that the conductive surface of the first shielding layer 131 is in good contact with the first conductor 132.

[0208] Similarly, in order to ensure a reliable electrical connection relationship between the third shielding layer 231 and the second conductor 232, the conductive surface of the third shielding layer 231 needs to face the second conductor 232; for example, for Figure 7 the embodiment shown, the second conductor 232 is located between the third shielding layer 231 and the fourth insulating layer 240. At this time, the insulating surface of the third shielding layer 231 wraps the third insulating layer 220 inward, and the conductive surface of the third shielding layer 231 faces outward and contacts the second conductor 232; it can be understood that for the embodiment where the second conductor 232 is located between the third insulating layer 220 and the third shielding layer 231, at this time, the conductive surface of the third shielding layer 231 wraps the third insulating layer 220 and the second conductor 232 inward at the same time, so that the conductive surface of the third shielding layer 231 is in good contact with the second conductor 232.

[0209] In the power cord provided by some embodiments of the present invention, the first shielding layer 131 wraps the first insulating layer 120 in a manner of braiding a plurality of conductors into a mesh; the third shielding layer 231 wraps the third insulating layer 220 in a manner of braiding a plurality of conductors into a mesh.

[0210] Compared with the above embodiments where a single-sided conductive flexible material is used as the first shielding layer 131, in this embodiment, the first shielding layer 131 and the third shielding layer 231 are made of different materials. A multi-strand conductor is woven into a mesh as the first shielding layer 131 and the third shielding layer 231. Several strands of conductors can be drawn out from the first shielding layer 131 and passed through the first opening 141 as the first metal conductor 150, and several strands of conductors can be drawn out from the third shielding layer 231 and passed through the second opening 241 as the second metal conductor 250.

[0211] In the power cord provided in some embodiments of the present invention, the first shielding layer 131 simultaneously includes a shielding layer composed of a single-sided conductive flexible material and a shielding layer woven into a mesh by a multi-strand conductor; the third shielding layer 231 simultaneously includes a shielding layer composed of a single-sided conductive flexible material and a shielding layer woven into a mesh by a multi-strand conductor.

[0212] In this embodiment, the first shielding layer 131 simultaneously includes the aforementioned single-sided conductive flexible material and a shielding layer woven into a mesh by a multi-strand conductor, which can improve the reliability of the first shielding layer 131. The first shielding layer 131 can more reliably detect the leakage current of the first current-carrying conductor 110 and is not prone to breakage and disconnection; similarly, the third shielding layer 231 simultaneously includes the aforementioned single-sided conductive flexible material and a shielding layer woven into a mesh by a multi-strand conductor, which can improve the reliability of the third shielding layer 231. The third shielding layer 231 can more reliably detect the leakage current of the second current-carrying conductor 210 and is not prone to breakage and disconnection.

[0213] In the power cord provided in some embodiments of the present invention, the first conductor 132 is located between the first insulating layer 120 and the first shielding layer 131, for example, as shown in Figure 7 ; or when the second insulating layer 140 exists, the first conductor 132 is located between the first shielding layer 131 and the second insulating layer 140; the second conductor 232 is located between the third insulating layer 220 and the third shielding layer 231, for example, as shown in Figure 7 ; or when the fourth insulating layer 240 exists, it is located between the third shielding layer 231 and the fourth insulating layer 240.

[0214] It can be understood that in this embodiment, the relative positions of the first shielding layer 131 and the first conductor 132 constituting the first shielding conductor structure 130 can be interchanged, as long as they are in close contact with each other and have a reliable electrical connection relationship to ensure the stability of electrical signal transmission; similarly, the relative positions of the third shielding layer 231 and the second conductor 232 constituting the second shielding conductor structure 230 can be interchanged, as long as they are in close contact with each other and have a reliable electrical connection relationship to ensure the stability of electrical signal transmission.

[0215] Refer toFigure 11 and Figure 12 , in the power cord provided by some embodiments of the present invention, the first shielding conductor structure 130 further includes a second shielding layer 133 that wraps the first shielding layer 131 and the first conductor 132, and the first conductor 132 is located between the first shielding layer 131 and the second shielding layer 133; the second shielding conductor structure 230 further includes a fourth shielding layer 233 that wraps the third shielding layer 231 and the second conductor 232, and the second conductor 232 is located between the third shielding layer 231 and the fourth shielding layer 233.

[0216] It can be understood that Figure 11 and Figure 12 the embodiments shown, compared with Figure 7 and Figure 8 the embodiments shown, the main difference is that the first shielding conductor structure 130 further includes a second shielding layer 133 in addition to the first shielding layer 131 and the first conductor 132, and the second shielding conductor structure 230 further includes a fourth shielding layer 233 in addition to the third shielding layer 231 and the second conductor 232, so that the second shielding conductor structure 230 can more reliably detect the leakage current of the second current-carrying conductor 210 and is not prone to breakage and disconnection.

[0217] In the power cord provided by some embodiments of the present invention, the first shielding layer 131 is made of a single-sided conductive flexible material. The insulating surface of the first shielding layer 131 faces inward and contacts the outer surface of the first insulating layer 120, and the conductive surface of the first shielding layer 131 faces outward and contacts the first conductor 132 and the second shielding layer 133; the second shielding layer 133 is formed by weaving a plurality of conductors into a net shape to wrap the first shielding layer 131; the third shielding layer 231 is made of a single-sided conductive flexible material. The insulating surface of the third shielding layer 231 faces inward and contacts the outer surface of the third insulating layer 220, and the conductive surface of the third shielding layer 231 faces outward and contacts the second conductor 232 and the fourth shielding layer 233; the fourth shielding layer 233 is formed by weaving a plurality of conductors into a net shape to wrap the third shielding layer 231.

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

[0219] In the power cord provided by some embodiments of the present invention, the first shielding layer 131 is wrapped around the first insulating layer 120 in a manner of braiding multiple conductors into a mesh; the second shielding layer 133 is made of a single-sided conductive flexible material, the conductive surface of the second shielding layer 133 faces inward and contacts the first conductor 132 and the first shielding layer 131, and the insulating surface of the second shielding layer 133 faces outward and contacts the inner surface of the second insulating layer 140; the third shielding layer 231 is wrapped around the third insulating layer 220 in a manner of braiding multiple conductors into a mesh; the fourth shielding layer 233 is made of a single-sided conductive flexible material, the conductive surface of the fourth shielding layer 233 faces inward and contacts the second conductor 232 and the third shielding layer 231; when the fourth insulating layer 240 exists, the insulating surface of the fourth shielding layer 233 faces outward and contacts the inner surface of the fourth insulating layer 240.

[0220] Similarly, the two sides of the single-sided conductive flexible material are respectively an insulating surface and a conductive surface. The insulating surface of the second shielding layer 133 faces outward and the conductive surface faces inward and outward, which can ensure a reliable electrical connection relationship between the second shielding layer 133 and the first conductor 132 and the first shielding layer 131; the insulating surface of the fourth shielding layer 233 faces outward and the conductive surface faces inward and outward, which can ensure a reliable electrical connection relationship between the fourth shielding layer 233 and the second conductor 232 and the third shielding layer 231.

[0221] In the power cord provided by some embodiments of the present invention, the first conductor 132 is wrapped around the outside of the first insulating layer 120 in a spiral winding manner, or is arranged parallel to the axis of the first current-carrying conductor 110 outside the first insulating layer 120; the second conductor 232 is wrapped around the outside of the third insulating layer 220 in a spiral winding manner, or is arranged parallel to the axis of the second current-carrying conductor 210 outside the third insulating layer 220.

[0222] Specifically, in Figure 11 the shown embodiment, the first conductor 132 is wrapped around the outside of the first shielding layer 131 in a spiral winding manner, and then the second shielding layer 133 is wrapped around the first conductor 132; or, the first conductor 132 is arranged parallel between the first shielding layer 131 and the second shielding layer 133; the second conductor 232 is wrapped around the outside of the third shielding layer 231 in a spiral winding manner, and then the fourth shielding layer 233 is wrapped around the second conductor 232; or, the second conductor 232 is arranged parallel between the third shielding layer 231 and the fourth shielding layer 233.

[0223] In the power cord provided by some embodiments of the present invention, the second insulating layer 140 can be a flexible insulating film material and wound around the outside of the first shielding conductor structure 130 or wrapped around the first shielding conductor structure 130 in parallel along the axis direction of the first current-carrying conductor 110; the second insulating layer 140 can also be an injection-molded insulating outer skin; the fourth insulating layer 240 can be a flexible insulating film material and wound around the outside of the second shielding conductor structure 230 or wrapped around the second shielding conductor structure 230 in parallel along the axis direction of the second current-carrying conductor 210;

[0224] The fourth insulating layer 240 can also be an injection-molded insulating outer skin.

[0225] It can be understood that the second insulating layer 140 can first use a flexible insulating film material and be wound around the outside of the first shielding conductor structure 130 or the flexible insulating film material is wrapped around the first shielding conductor structure 130 in parallel along the axis direction of the first current-carrying conductor 110, and then an injection-molded insulating outer skin is used to wrap around the outside of the flexible insulating film material. Such a setting can further improve the protection effect of the second insulating layer 140 on the first current-carrying conductor 110 and the first shielding conductor structure 130 inside the first current-carrying line 100; similarly, the fourth insulating layer 240 can first use a flexible insulating film material and be wound around the outside of the second shielding conductor structure 230 or the flexible insulating film material is wrapped around the second shielding conductor structure 230 in parallel along the axis direction of the second current-carrying conductor 210, and then an injection-molded insulating outer skin is used to wrap around the outside of the flexible insulating film material. Such a setting can further improve the protection effect of the fourth insulating layer 240 on the second current-carrying conductor 210 and the second shielding conductor structure 230 inside the second current-carrying line 200.

[0226] Referring to Figure 7 and Figure 8 or referring to Figure 11 and Figure 12 In the power cord provided by some embodiments of the present invention, the power cord further includes a first return line 300 and a second return line 400 located inside the fifth insulating layer 500; one end of the first return line 300 close to the output end is connected to the second end; one end of the second return line 400 close to the output end is connected to the fifth end.

[0227] It can be understood that by setting the first return line 300, the electrical signal transmitted from the second end of the first shielding conductor structure 130 can be led back from the side close to the output end of the power cord to the side close to the input end of the power cord; similarly, by setting the second return line 400, the electrical signal transmitted from the fifth end of the second shielding conductor structure 230 can be led back from the side close to the output end of the power cord to the side close to the input end of the power cord. In this way, the detection and protection device of the power cord can be uniformly set on the side close to the input end of the power cord to detect the leakage situation of the power cord and the open circuit situation of the shielding structure.

[0228] Refer to Figure 11 and Figure 12 In the power cord provided by some embodiments of the present invention, the first shielding conductor structure 130 further includes a second shielding layer 133 that wraps the first shielding layer 131 and the first conductor 132, and the first conductor 132 is located between the first shielding layer 131 and the second shielding layer 133; the second shielding conductor structure 230 further includes a fourth shielding layer 233 that wraps the third shielding layer 231 and the second conductor 232, and the second conductor 232 is located between the third shielding layer 231 and the fourth shielding layer 233.

[0229] It can be understood that the solution described in this embodiment is based on the solution in which the first return line 300 and the second return line 400 are provided inside the fifth insulating layer 500. For the specific functions and effects, reference can be made to the solution that does not describe the first return line 300 and the second return line 400 provided inside the fifth insulating layer 500, and details are not described herein again.

[0230] In the power cord provided by some embodiments of the present invention, the first shielding layer 131 is made of a single-sided conductive flexible material. The insulating surface of the first shielding layer 131 faces inward and contacts the outer surface of the first insulating layer 120, and the conductive surface of the first shielding layer 131 faces outward and contacts the first conductor 132 and the second shielding layer 133; the second shielding layer 133 wraps the first shielding layer 131 in a way of being woven into a net by multiple conductors; the third shielding layer 231 is made of a single-sided conductive flexible material. The insulating surface of the third shielding layer 231 faces inward and contacts the outer surface of the third insulating layer 220, and the conductive surface of the third shielding layer 231 faces outward and contacts the second conductor 232 and the fourth shielding layer 233; the fourth shielding layer 233 wraps the third shielding layer 231 in a way of being woven into a net by multiple conductors.

[0231] It can be understood that the solution described in this embodiment is based on the solution in which the first return line 300 and the second return line 400 are provided inside the fifth insulating layer 500. For the specific functions and effects, reference can be made to the solution that does not describe the first return line 300 and the second return line 400 provided inside the fifth insulating layer 500, and details are not described herein again.

[0232] In the power cord provided by some embodiments of the present invention, the first return line 300 can be located outside the first current-carrying line 100, for example, refer to Figure 11 as shown; the first return line 300 can also be located between the second insulating layer 140 and the first shielding conductor structure 130; the first return line 300 can also be located inside the first shielding conductor structure 130; the first return line 300 can also be located between the first shielding conductor structure 130 and the first insulating layer 120.

[0233] Among them, when the first return wire 300 is adjacent to or located inside the first shield conductor structure 130, in order to avoid interference between the electrical signals transmitted on the first return wire 300 and the electrical signals on the first shield conductor structure 130, the first return wire 300 should be a wire with an insulating outer skin.

[0234] In the power cord provided by some embodiments of the present invention, the second return wire 400 can be located outside the second current-carrying wire 200, for example, as shown in Figure 11 ; the second return wire 400 can also be located between the fourth insulating layer 240 and the second shield conductor structure 230; the second return wire 400 can also be located inside the second shield conductor structure 230; the second return wire 400 can also be located between the second shield conductor structure 230 and the third insulating layer 220.

[0235] Similarly, when the second return wire 400 is adjacent to or located inside the second shield conductor structure 230, in order to avoid interference between the electrical signals transmitted on the second return wire 400 and the electrical signals on the second shield conductor structure 230, the second return wire 400 should be a wire with an insulating outer skin.

[0236] In the power cord provided by some embodiments of the present invention, one end of the first shield layer 131 close to the output end or one end of the first conductor 132 close to the output end or one end of the second shield layer 133 close to the output end serves as the second end and is connected to one end of the first return wire 300 close to the output end of the power cord.

[0237] It can be understood that since the first shield conductor structure 130 includes the first shield layer 131, the first conductor 132, and the second shield layer 133, and all three of them are conductive, the second end can be led out from any one of the three and connected to the first return wire 300.

[0238] In the power cord provided by some embodiments of the present invention, one end of the third shield layer 231 close to the output end or one end of the second conductor 232 close to the output end or one end of the fourth shield layer 233 close to the output end serves as the fifth end and is connected to one end of the second return wire 400 close to the output end of the power cord.

[0239] It can be understood that since the second shield conductor structure 230 includes the third shield layer 231, the second conductor 232, and the fourth shield layer 233, and all three of them are conductive, the second end can be led out from any one of the three and connected to the second return wire 400.

[0240] In the power cord provided by some embodiments of the present invention, the first return wire 300 and the second return wire 400 are wires with insulating outer skins.

[0241] In this embodiment, the first return line 300 and the second return line 400 are selected as wires with insulating outer sheaths, which can prevent the electrical signals transmitted on the first return line 300 and the second return line 400 from interfering with other electrical signals.

[0242] In addition, an embodiment of the second aspect of the present invention provides a power cord, including a first current-carrying line 100 and a second current-carrying line 200, wherein:

[0243] The first current-carrying line 100 includes a first current-carrying conductor 110, a first insulating layer 120 wrapping the first current-carrying conductor 110, and a first shielding conductor structure 130. The first shielding conductor structure 130 is used to detect the leakage current from the first current-carrying conductor 110. The first shielding conductor structure 130 includes a first shielding layer 131 wrapping the first insulating layer 120; the first shielding conductor structure 130 includes a first end close to the input end of the power cord, a second end close to the output end of the power cord, and a third end located between the first end and the second end;

[0244] The second current-carrying line 200 includes a second current-carrying conductor 210, a third insulating layer 220 wrapping the second current-carrying conductor 210, and a second shielding conductor structure 230. The second shielding conductor structure 230 is used to detect the leakage current from the second current-carrying conductor 210. The second shielding conductor structure 230 includes a third shielding layer 231 wrapping the third insulating layer 220; the second shielding conductor structure 230 includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end;

[0245] A fifth insulating layer 500 wraps the first current-carrying line 100 and the second current-carrying line 200;

[0246] Wherein: the first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other inside the fifth insulating layer 500, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 are insulated from each other;

[0247] The first current-carrying line 100 and the second current-carrying line 200 also satisfy any one of the following four situations:

[0248] Situation 1: The first current-carrying line 100 further includes a first metal conductor 150 led out from the third end, and the first metal conductor 150 is connected to the sixth end;

[0249] Situation 2: The second current-carrying line 200 further includes a second metal conductor 250 led out from the sixth end, and the second metal conductor 250 is connected to the third end;

[0250] Case 3: The first current-carrying line 100 further includes a first metal conductor 150 led out from the third end, the second current-carrying line 200 further includes a second metal conductor 250 led out from the sixth end, and the first metal conductor 150 is connected to the second metal conductor 250;

[0251] Case 4: The power supply line is further provided with a third metal conductor 900, and both ends of the third metal conductor 900 are respectively connected to the third end and the sixth end.

[0252] It can be understood that the power supply line provided in this embodiment, compared with the power supply lines in the foregoing embodiments, only differs in that the first shielding conductor structure 130 in this embodiment does not include the first conductor 132, and the second shielding conductor structure 230 does not include the second conductor 232. That is, in Figure 9a , Figure 9b , Figure 9c and Figure 9d , deleting the first conductor 132 and the second conductor 232 can obtain the schematic diagram of the power supply line of this embodiment.

[0253] In the power supply line provided in the embodiment of the present invention, by adopting any one of Cases 1 to 4, the third end of the first shielding conductor structure 130 and the sixth end of the second shielding conductor structure 230 are electrically connected together, so that there is a connection point between the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200, and the two shielding conductor structures are no longer independently separated. For example, the first segment between the first end on the left and the third end in the middle of the first shielding conductor structure 100 is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and / or the second metal conductor 250. Similarly, the second segment between the third end in the middle and the second end on the right of the first shielding conductor structure 130 is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and / or the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, greatly enriching the feasibility and flexibility of the power supply line for leakage detection and shielding structure open-circuit detection, and being beneficial to improving the power supply safety of the power supply line.

[0254] It can also be understood that the first shielding conductor structure 130 and the second shielding conductor structure 230 are separated from each other inside the fifth insulating layer 500, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other, and the leakage detection of the first current-carrying line and the leakage detection of the second current-carrying line can be prevented from interfering with each other.

[0255] Refer to Figure 13, an embodiment of the third aspect of the present invention provides an electrical connection device 800, which includes a housing 810, a detection and protection device disposed inside the housing 810, and a power cord as in the embodiment of the second aspect above. The first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device. The first end and the fourth end are located inside the housing 810, and the third end and the sixth end are located at the connection between the power cord and the housing 810.

[0256] Referring to Figure 13 , an embodiment of the third aspect of the present invention further provides an electrical connection device 800, which includes a housing 810, a detection and protection device disposed inside the housing 810, and a power cord as in the embodiment of the second aspect above. The first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device. The first end and the fourth end are located inside the housing 810, and the output end of the power cord is used to connect to a load device. The third end and the sixth end are located at the connection between the power cord and the load device.

[0257] Referring to Figure 13 , an embodiment of the third aspect of the present invention further provides an electrical connection device 800, which includes a housing 810, a detection and protection device disposed inside the housing 810, and a power cord as in the embodiment of the second aspect above. The first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, and the fifth end are all connected to the detection and protection device. The first end and the fourth end are located inside the housing 810, and the output end of the power cord is used to connect to a load device. The third end and the sixth end are located between the housing 810 and the load device.

[0258] In the electrical connection device 800 provided by some embodiments of the present invention, a wire clip for fixing the power cord is provided at the connection between the power cord and the housing 810.

[0259] By providing a wire clip to fix the power cord, it is possible to prevent the power cord from being easily dragged by an external force, causing the various ports connected to the detection and protection device to fall off.

[0260] Referring to Figure 14 , in the electrical connection device 800 provided by some embodiments of the present invention, the detection and protection device includes:

[0261] A switch module 910 for controlling the electrical connection between the input end and the output end of the power cord;

[0262] The driving module 920 is respectively connected to the first current-carrying conductor 110, the second current-carrying conductor 210, the first end, the second end, the fourth end, the fifth end, and the switching module 910, and is configured to control the switching module 920 to disconnect the power connection when a leakage current is detected or an open circuit occurs in the first shielding conductor structure 130, and / or when a leakage current is detected or an open circuit occurs in the second shielding conductor structure 230.

[0263] It should be noted that, in this embodiment, the third end of the first shielding conductor structure 130 in the power line is electrically connected to the sixth end of the second shielding conductor structure 230, so that there is an associated point between the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200, and the two shielding conductor structures are no longer independently separated. For example, the first segment between the first end on the left and the third end in the middle of the first shielding conductor structure 130 is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250. Similarly, the second segment between the third end in the middle and the second end on the right of the first shielding conductor structure 130 is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, greatly enriching the feasibility and flexibility of the power line for leakage detection and open circuit detection of the shielding structure, and being beneficial to improving the power supply safety.

[0264] In addition, an embodiment of the fourth aspect of the present invention provides an electrical device, including a load device and the electrical connection device as described in the third aspect embodiment above, and the output end of the power line is connected to the load device.

[0265] In the electrical equipment of this embodiment, the third end of the first shielding conductor structure 130 in the power cord is electrically connected to the sixth end of the second shielding conductor structure 230, so that there is a connection point between the shielding conductor structures of the first current-carrying line 100 and the second current-carrying line 200, and the two shielding conductor structures are no longer independently separated. For example, the first segment of the first shielding conductor structure 130 between the first end on the left and the third end in the middle is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250. Similarly, the second segment of the first shielding conductor structure 130 between the third end in the middle and the second end on the right is electrically connected to the two segments of the second shielding conductor structure 230 through the first metal conductor 150 and the second metal conductor 250, so that the first shielding conductor structure 130 and the second shielding conductor structure 230 form a shielding network with multiple detection segments and capable of constructing multiple different detection paths, greatly enriching the feasibility and flexibility of the power cord for leakage detection and open-circuit detection of the shielding structure, and being beneficial to improving the power supply safety of the power cord.

[0266] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A current-carrying line, characterized in that, it includes: a first current-carrying conductor; a first insulating layer that wraps the first current-carrying conductor; a first shielding conductor structure for detecting the leakage current from the first current-carrying conductor, the first shielding conductor structure includes a first shielding layer that wraps the first insulating layer and a first conductor that closely adheres to the first shielding layer, and the first conductor is used to transfer the electrical signal on the first shielding conductor structure to the outside of the current-carrying line; a second insulating layer that wraps outside the first shielding conductor structure.

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

3. The current-carrying line according to claim 2, characterized in that, an insulating outer skin is provided outside the first metal conductor.

4. The current-carrying line according to claim 1, characterized in that, the first shielding layer is made of a single-sided conductive flexible material; the first shielding layer wraps the first insulating layer in a spiral winding manner, or wraps the first insulating layer parallel to the axis of the first current-carrying conductor.

5. The current-carrying line according to claim 1, characterized in that, the first shielding layer wraps the first insulating layer in a manner of being woven into a net by multiple conductors.

6. The current-carrying line according to claim 1, characterized in that, the first shielding layer simultaneously includes a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a net by multiple conductors.

7. The current-carrying line according to claim 1, characterized in that, the first conductor is located between the first insulating layer and the first shielding layer, or between the first shielding layer and the second insulating layer.

8. A current-carrying line, characterized in that, it includes: a first current-carrying conductor; a first insulating layer that wraps the first current-carrying conductor; a first shielding conductor structure for detecting the leakage current from the first current-carrying conductor, the first shielding conductor structure includes a first shielding layer that wraps the first insulating layer; the first shielding conductor structure includes a first end close to the input end of the first current-carrying conductor, a second end close to the output end of the first current-carrying conductor, and a third end located between the first end and the second end; a second insulating layer that wraps outside the first shielding conductor structure; a first metal conductor led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

9. A current-carrying line, characterized in that, it includes: a first current-carrying conductor; a first insulating layer that wraps the first current-carrying conductor; A first shielding conductor structure for detecting leakage current from the first current-carrying conductor, the first shielding conductor structure comprising a first shielding layer wrapping the first insulating layer, a second shielding layer wrapping the first shielding layer, and a first conductor located between the first shielding layer and the second shielding layer, the first conductor being used to transfer an electrical signal on the first shielding conductor structure to the outside of the current-carrying line; A second insulating layer wrapping outside the first shielding conductor structure.

10. The current-carrying line according to claim 9, characterized in that, the first shielding conductor structure comprises a first end close to the input end of the first current-carrying conductor, a second end close to the output end of the first current-carrying conductor, and a third end located between the first end and the second end, the current-carrying line further comprises a first metal conductor led out from the third end, and the second insulating layer is provided with a first opening for the first metal conductor to pass through.

11. The current-carrying line according to claim 10, characterized in that, an insulating outer skin is provided outside the first metal conductor.

12. The current-carrying line according to claim 9, characterized in that, the first shielding layer is made of a single-sided conductive flexible material, the insulating surface of the first shielding layer faces inwards and contacts the outer surface of the first insulating layer, and the conductive surface of the first shielding layer faces outwards and contacts the first conductor and the second shielding layer; the second shielding layer wraps the first shielding layer in a manner of being woven into a net by multiple strands of conductors.

13. The current-carrying line according to claim 9, characterized in that, the first shielding layer wraps the first insulating layer in a manner of being woven into a net by multiple strands of conductors; the second shielding layer is made of a single-sided conductive flexible material, the conductive surface of the second shielding layer faces inwards and contacts the first conductor and the first shielding layer, and the insulating surface of the second shielding layer faces outwards and contacts the inner surface of the second insulating layer.

14. The current-carrying line according to any one of claims 1 to 7, 9 to 13, characterized in that, the first conductor is a single-strand wire or a multi-strand wire; the first conductor is wrapped outside the first insulating layer in a spiral winding manner, or is arranged parallel to the axis of the first current-carrying conductor outside the first insulating layer.

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

16. A power cord, characterized in that, comprising: The first current-carrying line, the first current-carrying line includes a first current-carrying conductor, a first insulating layer wrapping the first current-carrying conductor, and a first shielding conductor structure for detecting leakage current from the first current-carrying conductor. The first shielding conductor structure includes a first shielding layer wrapping the first insulating layer; the first shielding conductor structure includes a first end close to the input end of the power line, a second end close to the output end of the power line, and a third end located between the first end and the second end; The second current-carrying line, the second current-carrying line includes a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shielding conductor structure for detecting leakage current from the second current-carrying conductor. The second shielding conductor structure includes a third shielding layer wrapping the third insulating layer; the second shielding conductor structure includes a fourth end close to the input end, a fifth end close to the output end, and a sixth end located between the fourth end and the fifth end; A fifth insulating layer wrapping the first current-carrying line and the second current-carrying line; Wherein: the first shielding conductor structure and the second shielding conductor structure are separated from each other inside the fifth insulating layer, so that the first shielding conductor structure and the second shielding conductor structure are insulated from each other; The first current-carrying line and the second current-carrying line also satisfy any one of the following four situations: Situation 1: The first current-carrying line further includes a first metal conductor led out from the third end, and the first metal conductor is connected to the sixth end; Situation 2: The second current-carrying line further includes a second metal conductor led out from the sixth end, and the second metal conductor is connected to the third end; Situation 3: The first current-carrying line further includes a first metal conductor led out from the third end, the second current-carrying line further includes a second metal conductor led out from the sixth end, and the first metal conductor is connected to the second metal conductor; Situation 4: The power line is further provided with a third metal conductor, and both ends of the third metal conductor are respectively connected to the third end and the sixth end.

17. A power line, Characterized in that, Comprising: A first current-carrying line, the first current-carrying line includes a first current-carrying conductor, a first insulating layer wrapping the first current-carrying conductor, and a first shielding conductor structure for detecting leakage current from the first current-carrying conductor. The first shielding conductor structure includes a first shielding layer wrapping the first insulating layer and a first conductor closely attached to the first shielding layer, and the first conductor is used to transmit the electrical signal on the first shielding conductor structure to the outside of the current-carrying line; A second current-carrying line, the second current-carrying line including a second current-carrying conductor, a third insulating layer wrapping the second current-carrying conductor, and a second shield conductor structure for detecting a leakage current from the second current-carrying conductor, the second shield conductor structure including a third shielding layer wrapping the third insulating layer and a second conductor closely attached to the third shielding layer, the second conductor being used to transmit an electrical signal on the second shield conductor structure to the outside of the current-carrying line; A fifth insulating layer wrapping the first current-carrying line and the second current-carrying line; Wherein: the first shield conductor structure and the second shield conductor structure are separated from each other inside the fifth insulating layer so that the first shield conductor structure and the second shield conductor structure are insulated from each other.

18. The power cord according to claim 17, wherein, The first current-carrying line further includes a second insulating layer wrapping the outside of the first shield conductor structure, and / or, the second current-carrying line further includes a fourth insulating layer wrapping the outside of the second shield conductor structure.

19. The power cord according to claim 17, wherein, The position inside the fifth insulating layer other than the first current-carrying line and the second current-carrying line is filled with an insulating material.

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

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

22. The power cord according to claim 20, wherein, Both the outside of the first metal conductor and the outside of the second metal conductor are provided with insulating sheaths.

23. The power cord according to claim 20, wherein, In the first case, the first metal conductor is welded and connected to the sixth end; in the second case, the second metal conductor is welded and connected to the third end; in the third case, the first metal conductor and the second metal conductor are welded at a position between the third end and the sixth end to achieve electrical connection; in the fourth case, one end of the third metal conductor is welded and connected to the third end, and the other end is welded and connected to the sixth end.

24. The power cord according to claim 20, wherein, the first metal conductor and the second metal conductor extend to a position close to the input end or extend to a position close to the output end to achieve electrical connection.

25. The power cord according to claim 20, wherein, the first conductor and the second conductor are multi-strand wires, and the first metal conductor is obtained by leading out several strands of wires from the first conductor at the third end; the second metal conductor is obtained by leading out several strands of wires from the second conductor at the sixth end.

26. The power cord according to claim 20, wherein, the first shielding layer wraps the first insulating layer in a manner of being woven into a net by multi-strand conductors, the third shielding layer wraps the third insulating layer in a manner of being woven into a net by multi-strand conductors, the first metal conductor is obtained by leading out several strands of conductors from the first shielding layer at the third end, and the second metal conductor is obtained by leading out several strands of conductors from the third shielding layer at the sixth end.

27. The power cord according to claim 17, wherein, the third shielding layer is made of a single-sided conductive flexible material; the third shielding layer wraps the third insulating layer in a spiral winding manner, or wraps the third insulating layer parallel to the axis direction of the second current-carrying conductor.

28. The power cord according to claim 17, wherein, the third shielding layer wraps the third insulating layer in a manner of being woven into a net by multi-strand conductors.

29. The power cord according to claim 17, wherein, the third shielding layer includes both a shielding layer made of a single-sided conductive flexible material and a shielding layer woven into a net by multi-strand conductors.

30. The power cord according to claim 20, wherein, the second conductor is located between the third insulating layer and the third shielding layer, or between the third shielding layer and the fourth insulating layer when the fourth insulating layer exists.

31. The power cord according to claim 17, wherein, the second shielding conductor structure further includes a fourth shielding layer that wraps the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

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

33. The power cord according to claim 31, wherein, the third shielding layer wraps the third insulating layer in a manner of being woven into a net by multiple strands of conductors; the fourth shielding layer is made of a single-sided conductive flexible material, the conductive surface of the fourth shielding layer faces inward and contacts the second conductor and the third shielding layer; when the fourth insulating layer exists, the insulating surface of the fourth shielding layer faces outward and contacts the inner surface of the fourth insulating layer.

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

35. The power cord according to any one of claims 18 to 33, wherein, the fourth insulating layer is a flexible insulating film material and winds around the outside of the second shielding conductor structure or wraps the second shielding conductor structure in parallel along the axis of the second current-carrying conductor; or, the fourth insulating layer is an injection-molded insulating outer skin.

36. The power cord according to claim 20, wherein, the power cord further includes a first return wire and a second return wire located inside the fifth insulating layer; one end of the first return wire close to the output end is connected to the second end; one end of the second return wire close to the output end is connected to the fifth end.

37. The power cord according to claim 36, wherein, the first shielding conductor structure further includes a second shielding layer that wraps the first shielding layer and the first conductor, and the first conductor is located between the first shielding layer and the second shielding layer; the second shielding conductor structure further includes a fourth shielding layer that wraps the third shielding layer and the second conductor, and the second conductor is located between the third shielding layer and the fourth shielding layer.

38. The power cord according to claim 37, wherein, the first shielding layer is made of a single-sided conductive flexible material, the insulating surface of the first shielding layer faces inward and contacts the outer surface of the first insulating layer, the conductive surface of the first shielding layer faces outward and contacts the first conductor and the second shielding layer; the second shielding layer wraps the first shielding layer in a manner of being woven into a net by multiple strands of conductors; the third shielding layer is made of a single-sided conductive flexible material, the insulating surface of the third shielding layer faces inward and contacts the outer surface of the third insulating layer, the conductive surface of the third shielding layer faces outward and contacts the second conductor and the fourth shielding layer; the fourth shielding layer wraps the third shielding layer in a manner of being woven into a net by multiple strands of conductors.

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

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

41. The power cord according to claim 37 or 38, wherein, one end of the first shielding layer close to the output end, or one end of the first conductor close to the output end, or one end of the second shielding layer close to the output end serves as the second end and is connected to one end of the first return line close to the output end.

42. The power cord according to claim 37 or 38, wherein, one end of the third shielding layer close to the output end, or one end of the second conductor close to the output end, or one end of the fourth shielding layer close to the output end serves as the fifth end and is connected to one end of the second return line close to the output end.

43. The power cord according to claim 36, wherein, the first return line and the second return line are wires with insulating sheaths.

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

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

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

47. The electrical connection device according to any one of claims 44 to 46, characterized in that, a wire clip for fixing the power cord is provided at the connection between the power cord and the housing.

48. The electrical connection device according to any one of claims 44 to 46, characterized in that, the detection and protection device includes: a switch module for controlling the electrical connection between the input end and the output end of the power cord; a driving module, which is respectively connected to the first current-carrying conductor, the second current-carrying conductor, the first end, the second end, the fourth end, the fifth end, and the switch module, and is used to control the switch module to disconnect the electrical connection when the first shield conductor structure detects a leakage current or an open circuit, and / or when the second shield conductor structure detects a leakage current or an open circuit.

49. An electrical equipment, characterized in that, it includes a load device and the electrical connection device according to any one of claims 44 to 48, and the output end of the power cord is connected to the load device.

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