High-voltage direct-current relay

Abstract

The application relates to a high-voltage direct-current relay, comprising a static contact, a dynamic contact plate arranged opposite to the static contact and movably contacted or separated from the static contact, a permanent magnet arranged on the periphery of the dynamic contact plate, the permanent magnet being capable of generating a magnetic field around the dynamic contact plate and the static contact, and a magnetic conductor arranged on the side of the dynamic contact plate away from the static contact, the magnetic conductor being capable of guiding at least part of the magnetic force lines of the magnetic field to the contact position of the dynamic contact plate and the static contact. Thus, after the magnetic conductor is arranged on the side of the dynamic contact plate away from the static contact, the permanent magnet is capable of generating a magnetic field around the dynamic contact plate and the static contact, the magnetic conductor is capable of guiding the magnetic force lines of the magnetic field to the back surface of the dynamic contact plate, so that the magnetic force lines of the magnetic field can be more concentrated at the contact position of the dynamic contact plate and the static contact, the magnetic field strength when the dynamic contact plate is separated from the static contact is enhanced, the arc extinguishing capacity is improved, and the use requirement of the high-voltage direct-current relay is met.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a high-voltage DC relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] A high-voltage DC relay is a type of relay that includes two stationary contacts and one moving contact. A permanent magnet is arranged around the moving contact, which generates a magnetic field to extinguish arcs and improve the arc-extinguishing effect.

[0004] Currently, permanent magnets have poor arc-extinguishing capabilities, making it difficult to meet usage requirements. Utility Model Content

[0005] Therefore, it is necessary to address the problem that the arc-extinguishing capability of permanent magnets in current high-voltage DC relays is poor and cannot meet the application requirements. A new high-voltage DC relay should be provided that can concentrate more magnetic lines of force at the contact point between the moving contact and the stationary contact, thereby improving the arc-extinguishing capability and meeting the application requirements.

[0006] A high-voltage DC relay, comprising:

[0007] Static contact head;

[0008] The moving contact is disposed opposite to the stationary contact and can move to contact or separate from the stationary contact;

[0009] A permanent magnet is located around the movable contact piece, and the permanent magnet is capable of generating a magnetic field around the movable contact piece and the stationary contact; and

[0010] A magnetic conductor is disposed on the side of the moving contact away from the stationary contact, and the magnetic conductor is capable of guiding at least a portion of the magnetic field lines to the contact position between the moving contact and the stationary contact.

[0011] In one embodiment of this application, the magnetic conductor is made of ferrous magnetic material.

[0012] In one embodiment of this application, one of the magnetic conductor and the movable contact has a fixed protrusion, and the other has a fixed hole. The fixed protrusion is snapped into the fixed hole to fix the magnetic conductor to the movable contact.

[0013] In one embodiment of this application, the inner wall of the fixing hole has a protrusion;

[0014] The protrusion is arranged in a ring shape, and the fixing protrusion is engaged in the protrusion. Alternatively, there are at least two protrusions, and multiple protrusions are arranged at intervals, with the fixing protrusion engaged between at least two protrusions.

[0015] In one embodiment of this application, the surface of the magnetic conductor is attached to the surface of the moving contact piece that is away from the surface of the stationary contact piece;

[0016] Alternatively, the moving contact piece may have a recessed mounting groove on the side opposite to the stationary contact, and the magnetic conductor may be at least partially mounted in the mounting groove.

[0017] In one embodiment of this application, the magnetic conductor corresponds to the contact position between the moving contact and the stationary contact;

[0018] And / or, the vertical surface of the magnetic conductor along the thickness direction of the movable contact piece is the outer peripheral wall of the magnetic conductor, and the outer peripheral wall of the magnetic conductor is recessed into the outer peripheral wall of the movable contact piece.

[0019] In one embodiment of this application, the magnetic conductor is arranged in the shape of a flat plate.

[0020] In one embodiment of this application, the magnetic conductor is a split structure.

[0021] In one embodiment of this application, the magnetic conductor includes a first magnetic conductor and a second magnetic conductor, which are spaced apart along the length direction of the movable contact piece.

[0022] In one embodiment of this application, the number of the first magnetic conductive elements is one or more; when there are multiple first magnetic conductive elements, the multiple first magnetic conductive elements are arranged at intervals.

[0023] And / or, the number of the second magnetic conductive elements is one or more, and when there are multiple second magnetic conductive elements, the multiple second magnetic conductive elements are arranged at intervals.

[0024] In one embodiment of this application, the first magnetic conductive element and the second magnetic conductive element may have the same or different shapes;

[0025] And / or, the first magnetic conductive element and the second magnetic conductive element are symmetrically arranged along the length direction of the moving contact piece.

[0026] In one embodiment of this application, the magnetic conductor is an integral structure.

[0027] In one embodiment of this application, the magnetic conductor includes a third magnetic conductor, a fourth magnetic conductor, and a connector. The third magnetic conductor and the fourth magnetic conductor are spaced apart along the length direction of the movable contact piece, and the connector connects the third magnetic conductor and the fourth magnetic conductor.

[0028] In one embodiment of this application, the moving contact piece is provided with a clearance groove on the side opposite to the stationary contact, and the clearance groove is used to accommodate and install the connector.

[0029] In one embodiment of this application, the third magnetic conductive element and the fourth magnetic conductive element may have the same or different shapes;

[0030] And / or, the third magnetic conductive element and the fourth magnetic conductive element are symmetrically arranged along the length direction of the moving contact piece.

[0031] In one embodiment of this application, the high-voltage DC relay further includes an insulating cover, a yoke clamp, and at least two stationary contacts. The at least two stationary contacts are installed through the insulating cover and extend into the insulating cover. The moving contact is movably disposed in the insulating cover, and both ends of the moving contact cooperate with the at least two stationary contacts. The yoke clamp is at least partially surrounding the periphery of the insulating cover, and the permanent magnet is disposed between the yoke clamp and the insulating cover.

[0032] In one embodiment of this application, the insulating cover is a ceramic cover.

[0033] By adopting the above technical solution, this application has at least the following technical effects:

[0034] The high-voltage DC relay of this application has a magnetic conductor disposed on the side of the moving contact opposite to the stationary contact. The permanent magnet can generate a magnetic field around the moving contact and the stationary contact, and the magnetic conductor can guide at least part of the magnetic field lines to the back of the moving contact, so that the magnetic field lines can be more concentrated at the contact position between the moving contact and the stationary contact, thereby enhancing the magnetic field strength when the moving contact and the stationary contact separate, improving the arc extinguishing capability, and meeting the usage requirements of the high-voltage DC relay.

[0035] Furthermore, the magnetic conductor is made of ferrous magnetic material, which reduces costs and facilitates processing and shaping.

[0036] Furthermore, the magnetic conductor is fixedly installed onto the moving contact piece by the snap-fit ​​between the fixed protrusion and the fixed hole, so as to ensure that the magnetic conductor is reliably installed on the surface of the moving contact piece away from the stationary contact.

[0037] Furthermore, the magnetic conductor is positioned at the contact point between the moving contact and the stationary contact so that the magnetic field lines can be concentrated more at the contact point between the moving contact and the stationary contact, thereby improving the arc extinguishing capability.

[0038] Furthermore, the outer peripheral wall of the magnetic conductor is recessed into the outer peripheral wall of the moving contact to prevent the magnetic field lines from concentrating on the magnetic conductor. In this way, the magnetic conductor can guide more magnetic field lines to the contact position between the moving contact and the stationary contact, thereby improving the arc extinguishing capability.

[0039] Furthermore, the magnetic conductor is arranged in a flat plate shape so that the magnetic field lines can be concentrated more at the contact position between the moving contact and the stationary contact, thereby enhancing the magnetic field strength when the moving contact and the stationary contact separate and improving the arc extinguishing capability. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a high-voltage DC relay according to an embodiment of this application.

[0041] Figure 2 for Figure 1 The top view of the high-voltage DC relay shown.

[0042] Figure 3 The high-voltage DC relay of the first embodiment of this application is in Figure 2 The sectional view shown at point AA.

[0043] Figure 4 for Figure 3 A partial schematic diagram of a high-voltage DC relay is shown.

[0044] Figure 5 for Figure 4 The side view of the high-voltage DC relay shown.

[0045] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the high-voltage DC relay at point BB.

[0046] Figure 7 for Figure 4 The front view of the high-voltage DC relay is shown.

[0047] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the high-voltage DC relay at point CC.

[0048] Figure 9 for Figure 6 The diagram shown is a schematic of the moving contact and the magnetic conductor in a high-voltage DC relay from one perspective.

[0049] Figure 10 for Figure 9 The diagram shown is a schematic of the moving contact and the magnetic conductor from another perspective.

[0050] Figure 11 for Figure 6 The diagram shows a magnified view of the high-voltage DC relay at point D.

[0051] Figure 12 for Figure 10 The front view of the moving contact and the magnetic conductor is shown.

[0052] Figure 13 for Figure 10 The diagram shows a magnetic conductor from one perspective.

[0053] Figure 14 for Figure 13 A schematic diagram of the magnetic conductor shown from another perspective.

[0054] Figure 15 The high-voltage DC relay of the second embodiment of this application is in Figure 2 The sectional view shown at point AA.

[0055] Figure 16 for Figure 15 A partial side view of the high-voltage DC relay shown.

[0056] Figure 17 for Figure 16 The diagram shows a cross-sectional view of the high-voltage DC relay at EE.

[0057] Figure 18 for Figure 16 The front view of the high-voltage DC relay is shown.

[0058] Figure 19 for Figure 18 The diagram shows a cross-sectional view of the high-voltage DC relay at FF.

[0059] Figure 20 for Figure 17 The diagram shown is a schematic of the moving contact and the magnetic conductor in a high-voltage DC relay from one perspective.

[0060] Figure 21 for Figure 20 The diagram shown is a schematic of the moving contact and the magnetic conductor from another perspective.

[0061] Figure 22 for Figure 17 The diagram shows a partial enlarged view of the high-voltage DC relay at point G.

[0062] Figure 23 for Figure 21 The front view of the moving contact and the magnetic conductor is shown.

[0063] Figure 24 for Figure 21 The diagram shows a magnetic conductor from one perspective.

[0064] Figure 25 for Figure 22 A schematic diagram of the magnetic conductor shown from another perspective.

[0065] Among them: 100, high voltage DC relay; 110, stationary contact; 120, moving contact piece; 121, fixing hole; 122, protrusion; 123, clearance groove; 130, permanent magnet; 140, magnetic conductor; 141, fixing protrusion; 142, first magnetic conductor; 143, second magnetic conductor; 144, third magnetic conductor; 145, fourth magnetic conductor; 146, connector; 150, insulating cover; 160, yoke clamp; 170, outer shell; 180, electromagnetic drive structure; 190, push rod assembly; 210, yoke plate. Detailed Implementation

[0066] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0067] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0068] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact, or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0072] A relay is an electronic control device. A high-voltage DC relay is a type of relay that includes two stationary contacts and one moving contact. A permanent magnet is positioned at each end of the moving contact along its length. The permanent magnets generate a magnetic field to extinguish arcs and improve the arc-extinguishing effect. However, current technology shows that the arc-extinguishing capability of permanent magnets is relatively poor, making it difficult to meet application requirements.

[0073] For this purpose, please refer to Figures 1 to 8 , Figures 15 to 19 This application provides a high-voltage DC relay 100. Figure 1 This is a schematic diagram of a high-voltage DC relay 100 according to an embodiment of this application. Figure 2 for Figure 1 The top view of the high-voltage DC relay 100 shown is shown. Figure 3 The high-voltage DC relay 100 of the first embodiment of this application is in Figure 2 The sectional view shown at point AA. Figure 4 for Figure 3 A partial schematic diagram of the high-voltage DC relay 100 is shown. Figure 5 for Figure 4 The side view of the high-voltage DC relay 100 shown is shown. Figure 6 for Figure 5 The diagram shows a cross-sectional view of the high-voltage DC relay 100 at point BB. Figure 7 for Figure 4 The front view of the high-voltage DC relay 100 shown is shown. Figure 8 for Figure 7 The cross-sectional view of the high-voltage DC relay 100 shown is located at CC. Figure 15 The high-voltage DC relay 100 of the second embodiment of this application is in Figure 2 The sectional view shown at point AA. Figure 16 for Figure 15 A partial side view of the high-voltage DC relay 100 shown. Figure 17 for Figure 16 The cross-sectional view of the high-voltage DC relay 100 shown is located at EE. Figure 18 for Figure 16 The front view of the high-voltage DC relay 100 shown is shown. Figure 19 for Figure 18 The cross-sectional view of the high-voltage DC relay 100 shown at FF.

[0074] The high-voltage DC relay 100 of this application can concentrate more magnetic field lines at the contact position between the moving contact 120 and the stationary contact 110, thereby enhancing the magnetic field strength when the moving contact 120 and the stationary contact 110 separate, improving the arc extinguishing capability, and meeting the usage requirements of the high-voltage DC relay 100. The specific structures of the high-voltage DC relay 100 in some embodiments are described below.

[0075] See Figures 3 to 10 , Figures 15 to 21 In one embodiment, the high-voltage DC relay 100 includes a stationary contact 110, a moving contact 120, a permanent magnet 130, and a magnetic conductor 140. The moving contact 120 is disposed opposite to the stationary contact 110 and is movably in contact with or separate from the stationary contact 110. The permanent magnet 130 is located around the moving contact 120 and is capable of generating a magnetic field around the moving contact 120 and the stationary contact 110. The magnetic conductor 140 is disposed on the side of the moving contact 120 away from the stationary contact 110 and is capable of guiding at least a portion of the magnetic field lines to the contact position between the moving contact 120 and the stationary contact 110. Figure 9 for Figure 6 The diagram shows the moving contact 120 and the magnetic conductor 140 in the high-voltage DC relay 100 from one perspective. Figure 10 for Figure 9The schematic diagram of the movable contact 120 and the magnetic conductor 140 shown from another perspective. Figure 20 for Figure 17 The diagram shows the moving contact 120 and the magnetic conductor 140 in the high-voltage DC relay 100 from one perspective. Figure 21 for Figure 20 The schematic diagram of the movable contact 120 and the magnetic conductor 140 shown from another perspective.

[0076] The stationary contact 110 and the moving contact 120 are components for realizing the inflow and outflow of current. The stationary contact 110 and the moving contact 120 are arranged opposite to each other. The moving contact 120 can also move towards or away from the stationary contact 110 to make contact with or separate from the stationary contact 110. When the moving contact 120 approaches and makes contact with the stationary contact 110, the moving contact 120 and the stationary contact 110 are connected, so that the high-voltage DC relay 100 can conduct the circuit. When the high-voltage DC relay 100 is disconnected, the moving contact 120 gradually moves away from the stationary contact 110 to separate the moving contact 120 from the stationary contact 110, and the circuit is broken.

[0077] Optionally, there are at least two stationary contacts 110, spaced apart, and both ends of the moving contact 120 can respectively contact or separate from at least two stationary contacts 110. Optionally, the moving contact 120 is in direct contact with the stationary contacts 110 to enable the high-voltage DC relay 100 to conduct the circuit. Of course, in other embodiments of this application, the moving contact 120 and the stationary contacts 110 can also be indirectly in contact.

[0078] The permanent magnet 130 is located around the moving contact 120 and has a certain distance between it and the moving contact 120. The permanent magnet 130 can generate a magnetic field around the moving contact 120 and the stationary contact 110. Through the action of the magnetic field, the electric arc generated between the moving contact 120 and the stationary contact 110 will be elongated in a direction away from each other, thereby extinguishing the arc. Optionally, the permanent magnet 130 can be rectangular or square. Of course, in the embodiments of this application, the permanent magnet 130 can also be other shapes.

[0079] Understandably, the arc-extinguishing energy level of the permanent magnet 130 in related technologies is poor, affecting the arc-extinguishing effect and failing to meet the application requirements. Therefore, this application provides a magnetic conductor 140 on the side of the moving contact 120 facing away from the stationary contact 110. That is, the magnetic conductor 140 is located below the moving contact 120, and it can guide the magnetic lines of force, so that more magnetic lines of force are concentrated at the contact position between the moving contact 120 and the stationary contact 110.

[0080] After the permanent magnet 130 generates a magnetic field, the magnetic conductor 140 can guide at least part of the magnetic field lines to the back of the moving contact 120, so that the magnetic field lines are more concentrated at the contact position between the moving contact 120 and the stationary contact 110, thereby enhancing the magnetic field strength at the contact position between the moving contact 120 and the stationary contact 110, thereby improving the arc extinguishing capability to meet the usage requirements of the high voltage DC relay 100.

[0081] To better illustrate the structure of the high-voltage DC relay 100, the height, length, and width directions of the moving contact 120 are introduced here, as follows: Figure 9 and Figure 20 As shown, the left-right direction of the moving contact 120 is the length direction, the front-back direction of the moving contact 120 is the width direction, and the thickness direction, up-down direction, and top-bottom direction of the moving contact 120 are the height directions. These length, width, and height directions are applicable to the high-voltage DC relay 100 and its components, and will not be described again later.

[0082] In one embodiment, the moving contact 120 and the stationary contact 110 are arranged opposite each other along the height direction. The moving contact 120 is movable along the height direction to contact or separate from the stationary contact 110. In one embodiment, at least two stationary contacts 110 are spaced apart along the length direction.

[0083] In one embodiment, at least two permanent magnets 130 are located around the movable contact 120. This allows the at least two permanent magnets 130 to generate a magnetic field around the movable contact 120 and the stationary contact 110. In this embodiment, two permanent magnets 130 are arranged along the length direction (i.e., the length direction of the movable contact 120, which will not be described further below) at both ends of the movable contact 120. Of course, the number of permanent magnets 130 can also be other. In other embodiments of this application, at least two permanent magnets 130 may also be located on both sides of the movable contact 120 in the width direction.

[0084] See Figures 3 to 8 , Figures 15 to 19 In one embodiment, the high-voltage DC relay 100 further includes an insulating cover 150, a yoke clamp 160, and at least two stationary contacts 110. The at least two stationary contacts 110 are installed through the insulating cover 150 and extend into the insulating cover 150. A movable contact 120 is movably disposed in the insulating cover 150. Both ends of the movable contact 120 cooperate with the at least two stationary contacts 110. The yoke clamp 160 is at least partially surrounding the periphery of the insulating cover 150. A permanent magnet 130 is disposed between the yoke clamp 160 and the insulating cover 150.

[0085] The insulating cover 150 provides electrical insulation, withstands the high electric field strength of high voltage DC, and prevents leakage current or creepage, ensuring the stable operation of the high voltage DC relay 100. The stationary contact 110 is installed through the insulating cover 150, with part of the stationary contact 110 located inside the insulating cover 150 and part located outside the insulating cover 150.

[0086] At least two stationary contacts 110 on the outside of the insulating cover 150 can be connected to the circuit through conductive components such as copper busbars. The portions of the at least two stationary contacts 110 in the inner cavity of the insulating cover 150 can be opposite to the movable contact 120. The movable contact 120 is movably disposed in the inner cavity of the insulating cover 150 and can move along the height direction in the insulating cover 150 so that the movable contact 120 contacts or separates from the at least two stationary contacts 110.

[0087] The yoke clamp 160 is at least partially surrounding the periphery of the insulating cover 150, that is, the insulating cover 150 is located inside the yoke clamp 160. The permanent magnet 130 is located between the yoke clamp 160 and the insulating cover 150, that is, the permanent magnet 130 is located outside the insulating cover 150 and inside the yoke clamp 160. The yoke clamp 160 can prevent the magnetic field of the permanent magnet 130 from spreading outward and affecting the arc extinguishing effect.

[0088] Understandably, an inert gas is typically injected into the insulating cover 150 to optimize the arc extinguishing effect. With the permanent magnet 130 positioned outside the insulating cover 150, it is possible to prevent the permanent magnet 130 from reacting with the inert gas in the insulating cover 150, thus ensuring the strength of the magnetic field generated by the permanent magnet 130.

[0089] Optionally, the insulating cover 150 has mounting holes extending into the inner cavity, through which the stationary contact 110 is mounted. This allows the stationary contact 110 to be partially located within the inner cavity of the insulating cover 150 and partially located outside the insulating cover 150. Optionally, the number of mounting holes is equal to the number of stationary contacts 110. Optionally, the insulating cover 150 is a ceramic cover. Optionally, the yoke clip 160 is made of a metal material. Further, the yoke clip 160 is made of a soft magnetic material, such as iron, cobalt, nickel, or their alloys.

[0090] See Figure 3 , Figure 6 , Figure 15 and Figure 17In one embodiment, the high-voltage DC relay 100 further includes a yoke plate 210, an electromagnetic drive structure 180, and a push rod assembly 190. An insulating cover 150 and a yoke clamp 160 are disposed on one side of the yoke plate 210. The electromagnetic drive structure 180 is disposed on the side of the yoke plate 210 opposite to the insulating cover 150. The push rod assembly 190 is partially disposed within the insulating cover 150, and its rod extends out of the insulating cover 150 and connects to the electromagnetic drive structure 180. The electromagnetic drive structure 180 can drive the push rod assembly 190 to move, causing the push rod assembly 190 to push the moving contact 120 to contact or separate from the stationary contact 110, thereby forming a conductive path or breaking a circuit. In one embodiment, the high-voltage DC relay 100 further includes a housing 170. The insulating cover 150, the yoke clamp 160, the yoke plate 210, and the electromagnetic drive structure 180 are disposed within the housing 170. The stationary contact 110 extends through the housing 170 to facilitate connection with conductive components.

[0091] It is worth noting that the focus of this application is on the structure and layout of the magnetic conductor 140. The cooperation between the moving contact 120 and the stationary contact 110, the structure of the insulating cover 150, the push rod assembly 190, and the structure and principle of the electromagnetic drive structure 180 are not the focus of this application. The following text will only describe the magnetic conductor 140, and other structures and working principles of the high-voltage DC relay 100 will not be described.

[0092] In one embodiment, the magnetic conductor 140 is made of ferrous magnetic material. That is, the magnetic conductor 140 is a ferrous magnetic conductor. The ferrous magnetic conductor 140 can concentrate the magnetic field lines at the contact position between the moving contact 120 and the stationary contact 110, thereby enhancing the magnetic field strength between the moving contact 120 and the stationary contact 110. At the same time, the ferrous magnetic conductor 140 has low cost and is easy to process.

[0093] See Figure 6 , Figure 9 , Figure 10 , Figure 17 , Figure 20 and Figure 21 In one embodiment, the magnetic conductor 140 corresponds to the contact position between the moving contact 120 and the stationary contact 110. This allows the magnetic conductor 140 to guide more magnetic lines of force to the contact position between the moving contact 120 and the stationary contact 110, thereby improving arc-extinguishing capability and meeting the usage requirements of the high-voltage DC relay 100. Optionally, the magnetic conductor 140 is directly opposite the contact position between the moving contact 120 and the stationary contact 110; alternatively, the magnetic conductor 140 may partially correspond to the contact position between the moving contact 120 and the stationary contact 110.

[0094] See Figure 9 , Figure 10 , Figure 20 and Figure 21In one embodiment, the vertical surface of the magnetic conductor 140 along the thickness direction of the movable contact 120 is the outer peripheral wall of the magnetic conductor 140, which is recessed into the outer peripheral wall of the movable contact 120. That is, the edge of the magnetic conductor 140 does not protrude from the edge of the movable contact 120, nor is the edge of the magnetic conductor 140 flush with the edge of the movable contact 120. This prevents the magnetic conductor 140 from guiding the magnetic lines of force to the portion protruding from or flush with the edge of the movable contact 120, allowing more magnetic lines of force to be guided to the contact position between the movable contact 120 and the stationary contact 110, improving arc-extinguishing capability and meeting the usage requirements of the high-voltage DC relay 100.

[0095] See Figure 6 , Figures 9 to 14 , Figure 17 , Figures 20 to 25 In one embodiment, one of the magnetic conductor 140 and the movable contact 120 has a fixing protrusion 141 and the other has a fixing hole 121. The fixing protrusion 141 is snapped into the fixing hole 121 to fix the magnetic conductor 140 to the movable contact 120. Figure 11 for Figure 6 The image shows a partial enlarged view of the high-voltage DC relay 100 at point D. Figure 12 for Figure 10 The front view of the movable contact 120 and the magnetic conductor 140 shown is shown. Figure 13 for Figure 10 The schematic diagram of the magnetic conductor 140 shown is presented from one viewpoint. Figure 14 for Figure 13 A schematic diagram of the magnetic conductor 140 shown from another perspective. Figure 22 for Figure 17 The image shows a partial enlarged view of the high-voltage DC relay 100 at point G. Figure 23 for Figure 21 The front view of the movable contact 120 and the magnetic conductor 140 shown is shown. Figure 24 for Figure 21 The schematic diagram of the magnetic conductor 140 shown is presented from one viewpoint. Figure 25 for Figure 22 A schematic diagram of the magnetic conductor 140 shown from another perspective.

[0096] The surface of the magnetic conductor 140 facing the movable contact 120 has one of a fixed protrusion 141 and a fixed hole 121, and the surface of the movable contact 120 facing the magnetic conductor 140 has the other of a fixed protrusion 141 and a fixed hole 121. When the magnetic conductor 140 is installed on the back side of the movable contact 120 (away from the surface of the stationary contact 110), the fixed protrusion 141 is aligned with the fixed hole 121, and the magnetic conductor 140 is pushed to move toward the movable contact 120, so that the fixed protrusion 141 is engaged in the fixed hole 121.

[0097] In this way, the magnetic conductor 140 can be fixed to the back of the moving contact 120 by the cooperation of the fixed protrusion 141 and the fixed hole 121, ensuring that the magnetic conductor 140 is in an accurate position and preventing the magnetic conductor 140 from shifting. This allows the magnetic conductor 140 to accurately concentrate the magnetic field lines at the contact position between the moving contact 120 and the stationary contact 110, thereby improving the arc extinguishing capability.

[0098] See Figure 6 , Figures 9 to 14 , Figure 17 , Figures 20 to 25 In this embodiment, the magnetic conductor 140 is provided with a fixing protrusion 141, and the movable contact 120 is provided with a fixing hole 121. That is, the surface of the magnetic conductor 140 facing the movable contact 120 has a protruding fixing protrusion 141, and the surface of the movable contact 120 facing the magnetic conductor 140 has a fixing hole 121. When the magnetic conductor 140 is installed on the movable contact 120, the magnetic conductor 140 can be engaged in the fixing hole 121 through the fixing protrusion 141, so that the magnetic conductor 140 is fixed to the movable contact 120.

[0099] Of course, in other embodiments of this application, the magnetic conductor 140 has a fixing hole 121, and the movable contact 120 has a fixing protrusion 141. That is, the surface of the magnetic conductor 140 facing the movable contact 120 has a fixing hole 121, and the surface of the movable contact 120 facing the magnetic conductor 140 has a protruding fixing protrusion 141. When the magnetic conductor 140 is installed onto the movable contact 120, the magnetic conductor 140 is engaged in the fixing protrusion 141 through the fixing hole 121, so that the magnetic conductor 140 is fixed to the movable contact 120.

[0100] In one embodiment, the magnetic conductor 140 is arranged in a flat plate shape. That is, regardless of whether the magnetic conductor 140 is an integral structure or a separate structure, the magnetic conductor 140 is a flat plate structure. The flat plate magnetic conductor 140 can concentrate the magnetic lines of force in the magnetic field generated by the permanent magnet 130 at the contact position between the moving contact 120 and the stationary contact 110.

[0101] See Figures 9 to 14 , Figures 20 to 25 In one embodiment, the magnetic conductor 140 and the fixing protrusion 141 are integrally formed. The fixing protrusion 141 on the magnetic conductor 140 is formed by integral stamping. This can improve the structural strength of the connection between the magnetic conductor 140 and the fixing protrusion 141 and prevent the connection between the fixing protrusion 141 and the magnetic conductor 140 from breaking.

[0102] See Figures 9 to 14 , Figures 20 to 25In one embodiment, the fixing protrusion 141 is cylindrical, and the shape of the fixing hole 121 is adapted to the shape of the fixing protrusion 141. That is, the cross-section of the fixing protrusion 141 is circular, and the cross-section of the fixing hole 121 is also circular. In this way, the fixing hole 121 can engage the fixing protrusion 141, thereby fixing the fixing protrusion 141.

[0103] Of course, in other embodiments of this application, the fixing protrusion 141 may also be a prism, or the fixing protrusion 141 may also be other regular or irregular shapes. This application will not limit it. The shape of the fixing hole 121 is adapted to the shape of the fixing protrusion 141.

[0104] See Figure 6 , Figure 11 , Figure 17 and Figure 22 In one embodiment, the inner wall of the fixing hole 121 has a protrusion 122, which is arranged in a ring shape, and the fixing protrusion 141 is engaged in the protrusion 122. The protrusion 122 protrudes from the inner wall of the fixing hole 121 and presents a ring-shaped structure. Moreover, the dimension of the protrusion 122 in the height direction is smaller than the depth of the fixing hole 121.

[0105] In other words, the fixing hole 121 has a stepped hole structure to facilitate the fitting of the fixing protrusion 141 with the fixing hole 121. When the fixing protrusion 141 is installed in the mounting hole, the fixing protrusion 141 is precisely engaged in the protrusion 122, thereby fixing the fixing protrusion 141 and reliably fixing the magnetic conductor 140 to the moving contact piece 120.

[0106] Of course, in other embodiments of this application, the number of protrusions 122 is at least two, and the multiple protrusions 122 are spaced apart, with the fixing protrusion 141 being engaged between at least two protrusions 122. That is, the multiple protrusions 122 are spaced apart in the inner circumferential direction of the fixing hole 121, and the fixing protrusion 141 can be precisely engaged between the multiple protrusions 122, so that the magnetic conductor 140 is reliably fixed to the moving contact piece 120.

[0107] See Figure 6 , Figures 9 to 14 , Figure 17 , Figures 20 to 25 In one embodiment, the surface of the magnetic conductor 140 is attached to the surface of the movable contact 120 that is away from the surface of the stationary contact 110. That is, the back surface of the movable contact 120 is flat. After the magnetic conductor 140 is fixed to the fixing hole 121 of the movable contact 120 by the fixing protrusion 141, the surface of the magnetic conductor 140 can contact the back surface of the movable contact 120.

[0108] Of course, in other embodiments of this application, the moving contact 120 also has a recessed mounting groove on the side opposite to the stationary contact 110, and the magnetic conductor 140 is at least partially mounted in the mounting groove. That is, the recessed mounting groove on the back of the moving contact 120 allows the magnetic conductor 140 to be at least partially mounted in the mounting groove, which not only ensures the guiding effect on the magnetic lines of force but also reduces the size in the height direction.

[0109] See Figures 3 to 14 In the first embodiment of this application, the magnetic conductor 140 is a split structure. That is, the magnetic conductor 140 consists of at least two components, which are separately arranged along the length direction. In this way, the magnetic conductor 140 can correspond to the permanent magnets 130 on both sides respectively, so as to concentrate the magnetic field lines at the contact position between the moving contact 120 and the stationary contact 110.

[0110] See Figures 3 to 14 In one embodiment, the magnetic conductor 140 includes a first magnetic conductor 142 and a second magnetic conductor 143, which are spaced apart along the length of the movable contact piece 120 and correspond to two permanent magnets 130 respectively. The first magnetic conductor 142 and the second magnetic conductor 143 are components for guiding magnetic lines of force.

[0111] The first magnetic conductive element 142 is disposed on the left side of the back surface of the movable contact 120, and the second magnetic conductive element 143 is disposed on the right side of the back surface of the movable contact 120, with a gap between the first magnetic conductive element 142 and the second magnetic conductive element 143. That is to say, the first magnetic conductive element 142 and the second magnetic conductive element 143 are disposed independently of each other.

[0112] Furthermore, the first magnetic conductive element 142 and the second magnetic conductive element 143 correspond to the permanent magnets 130 on both sides respectively. The first magnetic conductive element 142 and the second magnetic conductive element 143 can concentrate the magnetic field lines between the moving contact 120 and the stationary contact 110 to enhance the magnetic field strength between the moving contact 120 and the stationary contact 110 and improve the arc extinguishing effect.

[0113] See Figures 3 to 14 In one embodiment, the first magnetic conductive element 142 has at least one fixed protrusion 141, and the second magnetic conductive element 143 also has at least one fixed protrusion 141. The first magnetic conductive element 142 is installed on the moving contact piece 120 through the cooperation of the fixed protrusion 141 and the fixed hole 121, and the second magnetic conductive element 143 is installed on the moving contact piece 120 through the cooperation of the fixed protrusion 141 and the fixed hole 121.

[0114] See Figures 3 to 14In one embodiment, the number of first magnetic conductive elements 142 is one or more. When there are multiple first magnetic conductive elements 142, they are arranged at intervals. It is understood that the number of first magnetic conductive elements 142 is not limited in principle, as long as the first magnetic conductive elements 142 can concentrate the magnetic lines of force in the magnetic field generated by the permanent magnet 130 at the contact position between the moving contact 120 and the stationary contact 110. In this embodiment, the number of first magnetic conductive elements 142 is one. Of course, in other embodiments of this application, the number of first magnetic conductive elements 142 can also be at least two, and the at least two first magnetic conductive elements 142 are arranged at intervals.

[0115] See Figures 3 to 14 In one embodiment, the number of second magnetic conductive elements 143 is one or more. When there are multiple second magnetic conductive elements 143, they are arranged at intervals. It is understood that the number of second magnetic conductive elements 143 is not limited in principle, as long as the second magnetic conductive elements 143 can concentrate the magnetic lines of force in the magnetic field generated by the permanent magnet 130 at the contact position between the moving contact 120 and the stationary contact 110. In this embodiment, the number of second magnetic conductive elements 143 is one. Of course, in other embodiments of this application, the number of second magnetic conductive elements 143 can also be at least two, and the at least two second magnetic conductive elements 143 are arranged at intervals.

[0116] See Figures 3 to 14 In one embodiment, the number of the first magnetic conductive element 142 and the second magnetic conductive element 143 is one. The first magnetic conductive element 142 and the second magnetic conductive element 143 are spaced apart along the length direction of the moving contact piece 120, and respectively concentrate the magnetic lines of force in the magnetic field generated by the corresponding permanent magnet 130 at the contact position between the moving contact piece 120 and the stationary contact 110.

[0117] Of course, in other embodiments of this application, the number of first magnetic conductive elements 142 may be one, the number of second magnetic conductive elements 143 may be multiple, or the number of first magnetic conductive elements 142 may be multiple, the number of second magnetic conductive elements 143 may be one, or the number of both first magnetic conductive elements 142 and second magnetic conductive elements 143 may be multiple.

[0118] See Figures 3 to 14 Optionally, the first magnetic conductive element 142 and the second magnetic conductive element 143 can be square, chamfered, circular, elliptical, or other regular or irregular shapes. It is understood that the shapes of the first magnetic conductive element 142 and the second magnetic conductive element 143 are not limited in principle, as long as they can concentrate the magnetic lines of force in the magnetic field generated by the corresponding permanent magnet 130 at the contact position between the moving contact 120 and the stationary contact 110.

[0119] In this embodiment, the first magnetic conductive element 142 and the second magnetic conductive element 143 are square structures with chamfered corners. Of course, in other embodiments of this application, the shapes of the first magnetic conductive element 142 and the second magnetic conductive element 143 can be other than those described above. In this embodiment, the first magnetic conductive element 142 and the second magnetic conductive element 143 have the same shape. Of course, in other embodiments of this application, the shapes of the first magnetic conductive element 142 and the second magnetic conductive element 143 can also be different.

[0120] See Figures 3 to 14 In one embodiment, the first magnetic conductive element 142 and the second magnetic conductive element 143 are symmetrically arranged along the length direction of the moving contact piece 120. That is, the first magnetic conductive element 142 and the second magnetic conductive element 143 have a symmetrical structure with respect to the central axis of the high-voltage DC relay 100.

[0121] In this way, the magnetic field strength of the first magnetic conductor 142 and the second magnetic conductor 143 is roughly equivalent, thus ensuring that the magnetic field strength between the two stationary contacts 110 and the moving contact 120 is roughly equivalent, and ensuring that the arc extinguishing effect between the two stationary contacts 110 and the moving contact 120 is consistent. At the same time, as the push rod assembly 190 pushes the moving contact 120 to move along the height direction, it can also ensure that the moving contact 120 is subjected to balanced force, avoiding any tilting or sagging.

[0122] See Figures 15 to 25 In the second embodiment of this application, the magnetic conductor 140 is an integral structure. That is, the magnetic conductor 140 is a single component that extends along the length direction and is integrally disposed on the back side of the moving contact 120. In this way, the integral magnetic conductor 140 corresponds to the permanent magnets 130 on both sides at both ends along the length direction, so as to concentrate the magnetic field lines between the moving contact 120 and the stationary contact 110.

[0123] See Figures 15 to 25 In one embodiment, the magnetic conductor 140 includes a third magnetic conductor 144, a fourth magnetic conductor 145, and a connector 146. The third magnetic conductor 144 and the fourth magnetic conductor 145 are spaced apart along the length of the movable contact piece 120, and the connector 146 connects the third magnetic conductor 144 and the fourth magnetic conductor 145. The third magnetic conductor 144, the fourth magnetic conductor 145, and the connector 146 are components for guiding magnetic lines of force.

[0124] The third magnetic conductive element 144 is disposed on the left side of the back of the movable contact piece 120, the fourth magnetic conductive element 145 is disposed on the right side of the back of the movable contact piece 120, and the connector 146 is disposed between the third magnetic conductive element 144 and the fourth magnetic conductive element 145 and is connected to the third magnetic conductive element 144 and the fourth magnetic conductive element 145 so that the third magnetic conductive element 144 and the fourth magnetic conductive element 145 are connected to form a whole.

[0125] Furthermore, the third magnetic conductive element 144 and the fourth magnetic conductive element 145 correspond to the permanent magnets 130 on both sides respectively. The third magnetic conductive element 144 and the fourth magnetic conductive element 145 can concentrate the magnetic field lines between the moving contact 120 and the stationary contact 110 to enhance the magnetic field strength between the moving contact 120 and the stationary contact 110 and improve the arc extinguishing effect.

[0126] In one embodiment, the third magnetic conductive element 144, the fourth magnetic conductive element 145, and the connector 146 are integrally formed. That is, the third magnetic conductive element 144, the fourth magnetic conductive element 145, and the connector 146 can be integrally stamped, simplifying the assembly process and improving the structural strength of the magnetic conductor 140.

[0127] Of course, in other embodiments of this application, the third magnetic conductive element 144, the fourth magnetic conductive element 145, and the connector 146 may also be separately provided. The third magnetic conductive element 144, the fourth magnetic conductive element 145, and the connector 146 are independent components, which are spliced ​​together into a whole.

[0128] See Figures 3 to 14 In one embodiment, the magnetic conductor 140 has at least one fixing protrusion 141, and the magnetic conductor 140 is mounted to the movable contact 120 through the cooperation of the fixing protrusion 141 and the fixing hole 121. In this embodiment, the magnetic conductor 140 is provided with two fixing protrusions 141, one fixing protrusion 141 is located in the third magnetic conductor 144, and the other fixing protrusion 141 is located in the fourth magnetic conductor 145. Of course, in other embodiments of this application, the magnetic conductor 140 may also be provided with only one fixing protrusion 141 or more fixing protrusions 141.

[0129] See Figures 15 to 25 In one embodiment, the moving contact 120 has a recess 123 on the side opposite to the stationary contact 110. The recess 123 is used to accommodate and install the connector 146. Normally, other components are also installed on the back of the moving contact 120, which may interfere with the connector 146. Therefore, this application provides a recess 123 on the back of the moving contact 120 to accommodate and install the connector 146, ensuring that the surface of the magnetic conductor 140 can fit against the back of the moving contact 120.

[0130] See Figures 15 to 25 Optionally, the third magnetic conductor 144 and the fourth magnetic conductor 145 may be square, chamfered, circular, elliptical, or other regular or irregular shapes. It is understood that the shapes of the third magnetic conductor 144 and the fourth magnetic conductor 145 are not limited in principle, as long as they can concentrate the magnetic lines of force in the magnetic field generated by the corresponding permanent magnet 130 at the contact position between the moving contact 120 and the stationary contact 110.

[0131] In this embodiment, the third magnetic conductive element 144 and the fourth magnetic conductive element 145 are square structures with chamfered corners. Of course, in other embodiments of this application, the shapes of the third magnetic conductive element 144 and the fourth magnetic conductive element 145 can be other than those described above. In this embodiment, the third magnetic conductive element 144 and the fourth magnetic conductive element 145 have the same shape. Of course, in other embodiments of this application, the shapes of the third magnetic conductive element 144 and the fourth magnetic conductive element 145 can also be different.

[0132] See Figures 15 to 25 In one embodiment, the connector 146 is a rod-shaped structure. That is, the connector 146 is strip-shaped. This reduces the space occupied by the connector 146 on the back of the movable contact 120, facilitating the connection between the movable contact 120 and the push rod assembly 190 or other components. Simultaneously, it does not affect the reliability of the connection between the connector 146 and the third magnetic conductor 144 and the fourth magnetic conductor 145. Of course, in other embodiments of this application, the connector 146 may also be plate-shaped or have other shapes.

[0133] See Figures 15 to 25 In one embodiment, the third magnetic conductor 144 and the fourth magnetic conductor 145 are symmetrically arranged along the length direction. That is, the third magnetic conductor 144 and the fourth magnetic conductor 145 have a symmetrical structure with respect to the central axis of the high-voltage DC relay 100, and are connected by the connector 146 so that the magnetic conductor 140 as a whole has a symmetrical structure.

[0134] In this way, the ability of the third magnetic conductor 144 and the fourth magnetic conductor 145 to concentrate magnetic lines of force is roughly equivalent, thereby ensuring that the magnetic field strength between the two stationary contacts 110 and the moving contact 120 is roughly equivalent, and ensuring that the arc extinguishing effect between the two stationary contacts 110 and the moving contact 120 is consistent. At the same time, as the push rod assembly 190 pushes the moving contact 120 to move along the height direction, it can also ensure that the moving contact 120 is subjected to balanced force, avoiding any tilting or sagging.

[0135] It is worth noting that the above lists several possible implementations of the magnetic conductor 140, but the structure of the magnetic conductor 140 is not limited to the above and can also be other structures, as long as the magnetic conductor 140 can concentrate the magnetic lines of force in the magnetic field generated by the permanent magnet 130 at the contact position between the moving contact 120 and the stationary contact 110.

[0136] The high-voltage DC relay 100 of this application has a magnetic conductor 140 disposed on the side of the moving contact 120 away from the stationary contact 110. The permanent magnet 130 can generate a magnetic field around the moving contact 120 and the stationary contact 110, and the magnetic conductor 140 can guide the magnetic field lines to the back of the moving contact 120, so that the magnetic field lines can be more concentrated at the contact position between the moving contact 120 and the stationary contact 110, thereby enhancing the magnetic field strength when the moving contact 120 and the stationary contact 110 separate, improving the arc extinguishing capability, and meeting the usage requirements of the high-voltage DC relay 100.

[0137] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0138] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A high-voltage DC relay, characterized in that, include: Static contact head; The moving contact is disposed opposite to the stationary contact and can move to contact or separate from the stationary contact; A permanent magnet is located around the movable contact piece, and the permanent magnet can generate a magnetic field around the movable contact piece and the stationary contact. as well as A magnetic conductor is disposed on the side of the moving contact away from the stationary contact, and the magnetic conductor is capable of guiding at least a portion of the magnetic field lines to the contact position between the moving contact and the stationary contact.

2. The high-voltage DC relay according to claim 1, characterized in that, The magnetic conductor is made of ferrous magnetic material.

3. The high-voltage DC relay according to claim 1, characterized in that, One of the magnetic conductor and the movable contact piece has a fixed protrusion, and the other has a fixed hole. The fixed protrusion is fitted into the fixed hole to fix the magnetic conductor to the movable contact piece.

4. The high-voltage DC relay according to claim 3, characterized in that, The inner wall of the fixing hole has a protrusion; The protrusion is arranged in a ring shape, and the fixing protrusion is engaged in the protrusion. Alternatively, there are at least two protrusions, and multiple protrusions are arranged at intervals, with the fixing protrusion engaged between at least two protrusions.

5. The high-voltage DC relay according to claim 1, characterized in that, The surface of the magnetic conductor is in contact with the surface of the moving contact piece that is away from the surface of the stationary contact. Alternatively, the moving contact piece may have a recessed mounting groove on the side opposite to the stationary contact, and the magnetic conductor may be at least partially mounted in the mounting groove.

6. The high-voltage DC relay according to claim 1, characterized in that, The magnetic conductor corresponds to the contact position between the moving contact and the stationary contact; And / or, the vertical surface of the magnetic conductor along the thickness direction of the movable contact piece is the outer peripheral wall of the magnetic conductor, and the outer peripheral wall of the magnetic conductor is recessed into the outer peripheral wall of the movable contact piece.

7. The high-voltage DC relay according to claim 1, characterized in that, The magnetic conductor is arranged in a flat plate shape.

8. The high-voltage DC relay according to any one of claims 1 to 7, characterized in that, The magnetic conductor has a split structure.

9. The high-voltage DC relay according to claim 8, characterized in that, The magnetic conductor includes a first magnetic conductor and a second magnetic conductor, which are spaced apart along the length of the movable contact piece.

10. The high-voltage DC relay according to claim 9, characterized in that, The number of the first magnetic conductive element is one or more; when there are multiple first magnetic conductive elements, the multiple first magnetic conductive elements are arranged at intervals. And / or, the number of the second magnetic conductive elements is one or more, and when there are multiple second magnetic conductive elements, the multiple second magnetic conductive elements are arranged at intervals.

11. The high-voltage DC relay according to claim 9, characterized in that, The first magnetic conductive element and the second magnetic conductive element may have the same or different shapes; And / or, the first magnetic conductive element and the second magnetic conductive element are symmetrically arranged along the length direction of the moving contact piece.

12. The high-voltage DC relay according to any one of claims 1 to 7, characterized in that, The magnetic conductor is a single-piece structure.

13. The high-voltage DC relay according to claim 12, characterized in that, The magnetic conductor includes a third magnetic conductor, a fourth magnetic conductor, and a connector. The third magnetic conductor and the fourth magnetic conductor are spaced apart along the length of the movable contact piece, and the connector connects the third magnetic conductor and the fourth magnetic conductor.

14. The high-voltage DC relay according to claim 13, characterized in that, The moving contact piece has a recessed groove on the side opposite to the stationary contact, and the recessed groove is used to accommodate and install the connector.

15. The high-voltage DC relay according to claim 13, characterized in that, The third magnetic conductive element may have the same or different shape from the fourth magnetic conductive element; And / or, the third magnetic conductive element and the fourth magnetic conductive element are symmetrically arranged along the length direction of the moving contact piece.

16. The high-voltage DC relay according to any one of claims 1 to 7, characterized in that, The high-voltage DC relay further includes an insulating cover, a yoke clamp, and at least two stationary contacts. The at least two stationary contacts are installed through the insulating cover and extend into the insulating cover. The moving contact is movably disposed in the insulating cover, and both ends of the moving contact cooperate with the at least two stationary contacts. The yoke clamp is at least partially surrounding the periphery of the insulating cover. The permanent magnet is disposed between the yoke clamp and the insulating cover.

17. The high-voltage DC relay according to claim 16, characterized in that, The insulating cover is a ceramic cover.

Images