A high voltage DC relay capable of detecting the operating state of the main contact

Abstract

The present invention discloses a high-voltage DC relay capable of detecting the operating state of the main contact, comprising a main contact, a main reed, a driving mechanism and a magnetic circuit part; two main contacts are respectively arranged at the upper part of the relay, the main reed is matched below the two main contacts, the magnetic circuit part is arranged at the lower part of the relay, and the driving mechanism is connected between the main reed and the magnetic circuit part to drive the main reed to move upward and contact the two main contacts when the magnetic circuit part is working; the relay also includes a reed switch and a fixed bracket, the reed switch is arranged on the bottom surface of the magnetic circuit part through the fixed bracket, and the reed switch is distributed at a position deviating from the axis of the middle through hole of the coil frame of the magnetic circuit part. The present invention can realize the installation of auxiliary contacts without increasing the volume of the relay product through structural improvement, and has the characteristics of simple structure, convenient assembly, and good anti-magnetic field interference effect.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage direct current relays, and in particular to a high-voltage direct current relay capable of detecting the operating state of a main contact. Background Art

[0002] A relay is an electronic control device that has a control system (also called an input circuit) and a controlled system (also called an output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] A DC relay is a type of relay. Most existing DC relays use a direct-acting moving spring type (also called a solenoid direct-acting type). The DC relay usually includes a matching main contact and a main spring. The main spring is a straight-type structure. The main spring is connected to the magnetic circuit part through a push rod mechanism. When the magnetic circuit part is working, the push rod mechanism moves, and the push rod mechanism drives the main spring to move, so that the two ends of the main spring are in contact with the two main contacts, thereby connecting the load circuit. In order to monitor the connection of the main contact, the existing technology is to add auxiliary contacts and auxiliary springs to the DC relay, and monitor the connection of the main contact by the connection of the auxiliary contact. Among them, the auxiliary contact, the auxiliary spring and the main contact, the main spring are all installed in a cavity. Since the auxiliary contact is usually weak electricity, and the main contact is usually strong electricity, a larger air gap is required to achieve isolation between strong and weak electricity. A high-voltage DC relay in the prior art is used in energy storage and charging piles. The high-voltage DC relays used in energy storage and charging piles are usually required to have auxiliary contacts to monitor the on-off of the main contacts by utilizing the on-off of the auxiliary contacts. This high-voltage DC relay usually adopts a ceramic sealing structure. Since the overall volume of the product is small, the volume of the ceramic cavity is also small. Therefore, it is impossible to detect the operating state of the main contact (i.e., the on-off state) by setting auxiliary contacts and auxiliary reeds in the ceramic cavity, making it difficult for this small-volume high-voltage DC relay to meet the requirements when applied to energy storage and charging piles. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a high-voltage DC relay that can detect the operating state of the main contacts. Through structural improvement, the installation of auxiliary contacts can be achieved without increasing the volume of the relay product. The relay has the characteristics of simple structure, easy assembly, and good anti-magnetic field interference effect.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a high-voltage DC relay capable of detecting the operating state of the main contacts, comprising a main contact, a main reed, a driving mechanism and a magnetic circuit part; the two main contacts are respectively arranged at the upper part of the relay, the main reed is matched below the two main contacts, the magnetic circuit part is arranged at the lower part of the relay, and the driving mechanism is connected between the main reed and the magnetic circuit part to drive the main reed to move upward and contact the two main contacts when the magnetic circuit part is working; the relay also includes a reed switch and a fixed bracket, the reed switch is arranged on the bottom surface of the magnetic circuit part through the fixed bracket, and the reed switch is distributed at a position deviating from the axis of the middle through hole of the coil frame of the magnetic circuit part.

[0006] The reed switches are generally distributed radially along the axis of the middle through hole of the coil frame of the magnetic circuit part.

[0007] Furthermore, the relay also includes a shell, which is provided with a first cavity opening upward to accommodate the main contacts, main reed, driving mechanism and magnetic circuit part; a groove is also provided on the bottom surface of the first cavity, and the reed switch is adapted in the groove through a fixed bracket.

[0008] The magnetic circuit part also includes a yoke tube, which is provided with a second concave cavity opening upward to accommodate the coil frame, and the part of the fixed bracket equipped with the reed switch is pressed into the groove through the bottom surface of the yoke tube.

[0009] The fixing bracket is L-shaped, and the part of the fixing bracket equipped with the reed switch is the horizontal side of the L-shape of the fixing bracket, and the vertical side of the L-shape of the fixing bracket corresponds to the side outer wall of the yoke iron tube and extends upward.

[0010] The fixed bracket includes a first copper sheet and a second copper sheet for electrically connecting the two ends of the reed switch, and an injection molded body that integrates the first copper sheet and the second copper sheet into an integral piece; the first copper sheet and the second copper sheet respectively include a horizontal section and a vertical section connected into one piece, and the horizontal sections of the first copper sheet and the second copper sheet are respectively provided with bayonet sockets for connecting the corresponding ends of the reed switch, and the vertical sections of the first copper sheet and the second copper sheet are respectively provided with upward lead pins.

[0011] The injection molding body includes a horizontal injection molding body and a vertical injection molding body. The horizontal injection molding body injection-moldes the horizontal segment of the first copper sheet and the horizontal segment of the second copper sheet into an integral part, and the vertical injection molding body injection-moldes the vertical segment of the first copper sheet and the vertical segment of the second copper sheet into an integral part.

[0012] The bottom surface of the horizontal injection molding body is also provided with a slot opening downward, and the reed switch is clamped in the slot of the horizontal injection molding body; the clamping openings of the horizontal sections of the first copper sheet and the second copper sheet are respectively arranged at positions near the slot to realize electrical connection between the two ends of the reed switch.

[0013] A horizontal connecting section having a smaller cross-sectional area than the first copper sheet and the second copper sheet is connected between the horizontal section of the first copper sheet and the horizontal section of the second copper sheet to connect the horizontal section of the first copper sheet and the horizontal section of the second copper sheet together for easy injection molding.

[0014] Two cuts are also provided between the two ends of the horizontal connecting section, and the two cuts and the part of the horizontal connecting section between the two cuts are exposed outside the horizontal injection molding body, so that the part of the horizontal connecting section between the two cuts can be removed after the injection molding is completed, so that the horizontal section of the first copper sheet and the horizontal section of the second copper sheet are insulated from each other.

[0015] A vertical connecting section having a smaller cross-sectional area than the first copper sheet and the second copper sheet is connected between the vertical section of the first copper sheet and the vertical section of the second copper sheet to connect the vertical section of the first copper sheet and the vertical section of the second copper sheet together for easy injection molding.

[0016] Two cuts are also provided between the two ends of the vertical connecting section, and the two cuts and the part of the vertical connecting section between the two cuts are exposed outside the vertical injection molding body, so that the part of the vertical connecting section between the two cuts can be removed after the injection molding is completed, so that the vertical section of the first copper sheet and the vertical section of the second copper sheet are insulated from each other.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention adopts the addition of a reed switch and a fixed bracket, wherein the reed switch is arranged on the bottom surface of the magnetic circuit part through the fixed bracket, and the reed switch is distributed at a position deviating from the axis of the middle through hole of the coil frame of the magnetic circuit part. This structure of the present invention realizes the function of the auxiliary contact of the high-voltage DC relay through the cooperation of the reed switch and the fixed bracket, and can detect the action state of the main contact, thereby realizing the auxiliary switch design on a small-volume relay product and having the characteristics of simple structure.

[0019] 2. The present invention adopts the method of arranging two main contacts at the upper part of the relay, the main reed piece is matched below the two main contacts, the magnetic circuit part is arranged at the lower part of the relay, and the reed switch is arranged on the bottom surface of the magnetic circuit part through a fixed bracket. In this structure of the present invention, strong electricity is on the upper part and weak electricity is on the lower part, so that the separation of strong and weak electricity is realized and the reliability of strong and weak electricity is ensured.

[0020] 3. The present invention adopts a groove provided on the bottom surface of the first concave cavity of the housing, the reed switch is adapted in the groove through the fixing bracket, and the part of the fixing bracket equipped with the reed switch is pressed into the groove through the bottom surface of the yoke iron cylinder. This structure of the present invention is simple to assemble and does not increase the volume of the relay product.

[0021] 4. Since the present invention arranges the reed switch at the bottom of the product, it can better resist the magnetic field interference from the side of the relay product.

[0022] 5. The present invention uses a horizontal injection molding body and a vertical injection molding body to injection-mold the horizontal sections of the first copper sheet and the second copper sheet and the vertical sections of the first copper sheet and the second copper sheet together. This structure of the present invention makes the process and assembly simpler, and the lead-out terminal of the auxiliary contact is more convenient to lead out.

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the high-voltage DC relay capable of detecting the operating state of the main contacts of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of an embodiment of the present invention (cut along the line connecting the two main contacts);

[0025] Figure 2 is a cross-sectional view of an embodiment of the present invention (cut along a direction perpendicular to a line connecting two main contacts);

[0026] Figure 3 is a cross-sectional view of a local structure (excluding the injection molded body) of an embodiment of the present invention (cut along a direction perpendicular to the line connecting the two main contacts);

[0027] Figure 4 yes Figure 3 A side view of the partial structure shown;

[0028] Figure 5 is a cross-sectional view of a local structure (including an injection molded body) of an embodiment of the present invention (cut along a direction perpendicular to a line connecting two main contacts);

[0029] Figure 6 yes Figure 5 A side view of the partial structure shown;

[0030] Figure 7 is a schematic diagram of the coordination of the reed switch, the fixing bracket and the housing according to an embodiment of the present invention;

[0031] Figure 8 1 is a schematic diagram of a three-dimensional structure of a reed switch according to an embodiment of the present invention installed in a fixed bracket (with the bottom facing upward);

[0032] Fig. 9 is a side view of a reed switch according to an embodiment of the present invention installed in a fixed bracket;

[0033] Fig.10 A bottom schematic diagram of a reed switch in an embodiment of the present invention installed in a fixed bracket;

[0034] Fig.11 is a schematic diagram of the three-dimensional structure of a fixing bracket (bottom facing upward) according to an embodiment of the present invention;

[0035] Fig.12 is a side view of a fixing bracket according to an embodiment of the present invention;

[0036] Fig.13 A schematic bottom view of a fixing bracket according to an embodiment of the present invention;

[0037] Fig.14 It is a schematic diagram of the three-dimensional structure of the first copper sheet and the second copper sheet (bottom facing upward when not injected) of an embodiment of the present invention;

[0038] Fig.15 is a side view of a first copper sheet and a second copper sheet according to an embodiment of the present invention;

[0039] Fig.16 is a bottom schematic diagram of a first copper sheet and a second copper sheet according to an embodiment of the present invention;

[0040] Fig.17 Schematic diagram of the three-dimensional structure of the first copper sheet and the second copper sheet (before injection molding) of an embodiment of the present invention;

[0041] Fig.18 It is a schematic diagram of a three-dimensional structure of a first copper sheet, a second copper sheet and an injection molded body combined (not cut) in an embodiment of the present invention;

[0042] Fig.19 It is a schematic diagram of a three-dimensional structure of a first copper sheet, a second copper sheet and an injection molded body combined (after cutting) in an embodiment of the present invention;

[0043] Fig. 20 Schematic diagram of the coordination between the reed switch and the magnetic circuit part of an embodiment of the present invention;

[0044] Fig.21 It is a comparative diagram of the coordination between the reed switch and the magnetic circuit. DETAILED DESCRIPTION

[0045] Example

[0046] See also Figures 1 to 16As shown, a high-voltage DC relay capable of detecting the operating state of the main contacts of the present invention comprises a main contact 1, a main reed 2, a driving mechanism 3 and a magnetic circuit part 4; the two main contacts 1 are respectively arranged at the upper part of the relay, the main reed 2 is matched below the two main contacts 1, the magnetic circuit part 4 is arranged at the lower part of the relay, and the driving mechanism 3 is connected between the main reed 2 and the magnetic circuit part 4 to drive the main reed 2 to move upward and contact with the two main contacts 1 when the magnetic circuit part 4 is working; the relay also includes a reed switch 5 and a fixed bracket 6, the reed switch 5 is arranged on the bottom surface of the magnetic circuit part 4 through the fixed bracket 6, and the reed switch 5 is distributed at a position deviating from the axis of the middle through hole of the coil frame 41 of the magnetic circuit part 4. Since the reed switch 5 is moved by the influence of the magnetic field, the present invention uses the magnetic field generated by the magnetic circuit part 4 when it is working to affect the reed switch 5 so as to turn the reed switch 5 on or off. Therefore, the reed switch 5 can only be affected by the magnetic field generated by the magnetic circuit part 4 when it is working if it is located at a position deviating from the axis of the middle through hole of the coil frame 41 of the magnetic circuit part 4 (such as Fig. 20 As shown), if the reed switch 5 is distributed at the position of the axis of the middle through hole of the coil frame 41 of the magnetic circuit part 4 (as shown Fig.21 As shown), the reed switch 5 does not work.

[0047] In this embodiment, the reed switch 5 is distributed roughly along the radial direction of the axis of the middle through hole of the coil frame 41 of the magnetic circuit part 4.

[0048] Furthermore, the relay also includes a housing 7, which is provided with a first concave cavity 71 opening upward to accommodate the main contact 1, the main reed 2, the driving mechanism 3 and the magnetic circuit part 4; a groove 72 is also provided on the bottom surface of the first concave cavity 71, and the reed switch 5 is adapted in the groove 72 through a fixed bracket 6.

[0049] The magnetic circuit part 4 also includes a yoke iron tube 42, which is provided with a second concave cavity opening upward to accommodate the coil frame 41. The part of the fixed bracket 6 where the reed switch 5 is installed is pressed into the groove 72 of the outer shell 7 through the bottom surface of the yoke iron tube 42.

[0050] In this embodiment, the fixed bracket 6 is L-shaped, and the part of the fixed bracket 6 equipped with the reed switch is the horizontal side 61 of the L-shape of the fixed bracket, and the vertical side 62 of the L-shape of the fixed bracket 6 corresponds to the side outer wall of the yoke iron tube 42 and extends upward.

[0051] In this embodiment, the fixed bracket 6 includes a first copper sheet 63 and a second copper sheet 64 for electrically connecting the two ends of the reed switch, and an injection molded body 65 that integrates the first copper sheet 63 and the second copper sheet 64 into an integral piece; the first copper sheet 63 includes a horizontal section 631 and a vertical section 632 connected as a whole, and the second copper sheet 64 includes a horizontal section 641 and a vertical section 642 connected as a whole, the horizontal section 631 of the first copper sheet 63 is provided with a bayonet 633 for connecting the corresponding end of the reed switch, the horizontal section 641 of the second copper sheet 64 is provided with a bayonet 643 for connecting the corresponding end of the reed switch, the vertical section 632 of the first copper sheet 63 is provided with an upward lead-out pin 634, and the vertical section 642 of the second copper sheet 64 is provided with an upward lead-out pin 644.

[0052] In this embodiment, the injection molding body 65 includes a horizontal injection molding body 651 and a vertical injection molding body 652. The horizontal injection molding body 651 injection molds the horizontal segment 631 of the first copper sheet 63 and the horizontal segment 641 of the second copper sheet 64 into an integral part, and the vertical injection molding body 652 injection molds the vertical segment 632 of the first copper sheet 63 and the vertical segment 642 of the second copper sheet 64 into an integral part.

[0053] In this embodiment, the bottom surface of the horizontal injection molding body 651 is also provided with a slot 653 with an opening facing downward, and the reed switch 5 is clamped in the slot 653 of the horizontal injection molding body 651; the bayonet 633 of the horizontal segment 631 of the first copper sheet 63 and the bayonet 643 of the horizontal segment 641 of the second copper sheet 64 are respectively arranged at positions near the slot 653 to realize electrical connection between the two ends of the reed switch 5.

[0054] In this embodiment, a horizontal connecting section 66 having a smaller cross-sectional area than the first copper sheet 63 and the second copper sheet 64 is connected between the horizontal section 631 of the first copper sheet 63 and the horizontal section 641 of the second copper sheet 64, so as to connect the horizontal section 631 of the first copper sheet 63 and the horizontal section 641 of the second copper sheet 64 together for easy injection molding.

[0055] In this embodiment, two cuts 661 are further provided between the two ends of the horizontal connecting section 66, and the two cuts 661 and a portion 662 of the horizontal connecting section between the two cuts are exposed outside the horizontal injection molding body 651, so that the portion 662 of the horizontal connecting section between the two cuts can be cut off and removed after the injection molding is completed, so that the horizontal section 631 of the first copper sheet and the horizontal section 641 of the second copper sheet are insulated from each other.

[0056] In this embodiment, a vertical connecting section 67 having a smaller cross-sectional area than the first copper sheet 63 and the second copper sheet 64 is connected between the vertical section 632 of the first copper sheet 63 and the vertical section 642 of the second copper sheet 64, so as to connect the vertical section 632 of the first copper sheet 63 and the vertical section 642 of the second copper sheet 64 together for easy injection molding.

[0057] In this embodiment, two cuts 671 are further provided between the two ends of the vertical connecting section 67, and the two cuts 671 and a portion 672 of the vertical connecting section between the two cuts are exposed outside the vertical injection molding body 652, so that the portion 672 of the vertical connecting section between the two cuts can be cut off after the injection molding is completed, so that the vertical section 632 of the first copper sheet and the vertical section 642 of the second copper sheet are insulated from each other.

[0058] A high-voltage DC relay capable of detecting the operating state of the main contact of the present invention adopts the addition of a reed switch 5 and a fixed bracket 6. The reed switch 5 is arranged on the bottom surface of the magnetic circuit part 4 through the fixed bracket 6, and the reed switch 5 is distributed at a position deviating from the axis of the middle through hole of the coil frame 41 of the magnetic circuit part. This structure of the present invention realizes the function of the auxiliary contact of the high-voltage DC relay through the cooperation of the reed switch 5 and the fixed bracket 6, can detect the operating state of the main contact, achieves the design of the auxiliary switch on a small-volume relay product, and has the characteristics of simple structure.

[0059] The present invention is a high-voltage DC relay capable of detecting the operating state of the main contacts, wherein two main contacts 1 are respectively arranged at the upper part of the relay, the main reed 2 is matched below the two main contacts 1, the magnetic circuit part 4 is arranged at the lower part of the relay, and the reed switch 5 is arranged on the bottom surface of the magnetic circuit part 4 through a fixing bracket 6. In this structure of the present invention, the strong current is on the upper side and the weak current is on the lower side, so that the strong and weak currents are separated and the reliability of the strong and weak currents is ensured.

[0060] A high-voltage DC relay capable of detecting the operating state of the main contacts of the present invention adopts a groove 72 provided on the bottom surface of the first concave cavity 71 of the housing 7, and the reed switch 5 is adapted in the groove 72 through the fixed bracket 6, and the part of the fixed bracket 6 equipped with the reed switch is pressed into the groove 72 through the bottom surface of the yoke iron cylinder 42. This structure of the present invention is simple to assemble and does not increase the volume of the relay product. This high-voltage DC relay of the present invention is mainly used for energy storage and charging piles. When in use, several relays are usually installed side by side. Since the present invention adopts the arrangement of the reed switch 5 at the bottom of the product, it can better resist the magnetic field interference from the side of the relay product.

[0061] A high-voltage DC relay capable of detecting the operating state of the main contact of the present invention adopts a horizontal injection molding body 651 and a vertical injection molding body 652 to injection-mold together the horizontal sections 631 and 641 of the first copper sheet 63 and the second copper sheet 64 and the vertical sections 632 and 642 of the first copper sheet 63 and the second copper sheet 64. This structure of the present invention makes the process and assembly simpler, and the lead-out terminal of the auxiliary contact is more convenient to lead out.

[0062] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high-voltage DC relay capable of detecting the operating state of a main contact, comprising a main contact, a main reed, a driving mechanism and a magnetic circuit portion; two main contacts are respectively arranged at the upper part of the relay, the main reed is fitted below the two main contacts, the magnetic circuit portion is arranged at the lower part of the relay, and the driving mechanism is connected between the main reed and the magnetic circuit portion to drive the main reed to move upward and contact the two main contacts when the magnetic circuit portion is working; characterized in that: The relay also includes a reed switch and a fixed bracket. The reed switch is arranged on the bottom surface of the magnetic circuit part through the fixed bracket, and the reed switch is distributed at a position deviating from the axis of the middle through hole of the coil frame of the magnetic circuit part, so as to utilize the magnetic field flowing through the moving iron core generated when the magnetic circuit part without permanent magnet is working to affect the reed switch and make the reed switch conductive or disconnected.

2. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 1, characterized in that: The reed switches are generally distributed radially along the axis of the middle through hole of the coil frame of the magnetic circuit part.

3. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 1 or 2, characterized in that: Furthermore, the relay also includes a shell, which is provided with a first cavity opening upward to accommodate the main contacts, main reed, driving mechanism and magnetic circuit part; a groove is also provided on the bottom surface of the first cavity, and the reed switch is adapted in the groove through a fixed bracket.

4. The high-voltage DC relay capable of detecting the operating state of the main contacts according to claim 3, characterized in that: The magnetic circuit part also includes a yoke tube, which is provided with a second concave cavity opening upward to accommodate the coil frame, and the part of the fixed bracket equipped with the reed switch is pressed into the groove through the bottom surface of the yoke tube.

5. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 4, characterized in that: The fixing bracket is L-shaped, and the part of the fixing bracket equipped with the reed switch is the horizontal side of the L-shape of the fixing bracket, and the vertical side of the L-shape of the fixing bracket corresponds to the side outer wall of the yoke iron tube and extends upward.

6. The high-voltage DC relay capable of detecting the operating state of the main contacts according to claim 5, characterized in that: The fixed bracket includes a first copper sheet and a second copper sheet for electrically connecting the two ends of the reed switch, and an injection molded body that integrates the first copper sheet and the second copper sheet into an integral piece; the first copper sheet and the second copper sheet respectively include a horizontal section and a vertical section connected into one piece, the horizontal sections of the first copper sheet and the second copper sheet are respectively provided with bayonet sockets for connecting the corresponding ends of the reed switch, and the vertical sections of the first copper sheet and the second copper sheet are respectively provided with upward lead pins.

7. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 6, characterized in that: The injection molding body includes a horizontal injection molding body and a vertical injection molding body. The horizontal injection molding body injection-moldes the horizontal segment of the first copper sheet and the horizontal segment of the second copper sheet into an integral part, and the vertical injection molding body injection-moldes the vertical segment of the first copper sheet and the vertical segment of the second copper sheet into an integral part.

8. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 7, characterized in that: The bottom surface of the horizontal injection molding body is also provided with a slot opening downward, and the reed switch is clamped in the slot of the horizontal injection molding body; the clamping openings of the horizontal sections of the first copper sheet and the second copper sheet are respectively arranged at positions near the slot to realize electrical connection between the two ends of the reed switch.

9. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 7, characterized in that: A horizontal connecting section having a smaller cross-sectional area than the first copper sheet and the second copper sheet is connected between the horizontal section of the first copper sheet and the horizontal section of the second copper sheet to connect the horizontal section of the first copper sheet and the horizontal section of the second copper sheet together for easy injection molding.

10. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 9, characterized in that: Two cuts are also provided between the two ends of the horizontal connecting section, and the two cuts and the part of the horizontal connecting section between the two cuts are exposed outside the horizontal injection molding body, so that the part of the horizontal connecting section between the two cuts can be removed after the injection molding is completed, so that the horizontal section of the first copper sheet and the horizontal section of the second copper sheet are insulated from each other.

11. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 7, characterized in that: A vertical connecting section having a smaller cross-sectional area than the first copper sheet and the second copper sheet is connected between the vertical section of the first copper sheet and the vertical section of the second copper sheet to connect the vertical section of the first copper sheet and the vertical section of the second copper sheet together for easy injection molding.

12. The high voltage DC relay capable of detecting the operating state of the main contacts according to claim 11, characterized in that: Two cuts are also provided between the two ends of the vertical connecting section, and the two cuts and the part of the vertical connecting section between the two cuts are exposed outside the vertical injection molding body, so that the part of the vertical connecting section between the two cuts can be removed after the injection molding is completed, so that the vertical section of the first copper sheet and the vertical section of the second copper sheet are insulated from each other.

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