A wiring power-off integrated relay and cable connection and protection method

Abstract

The application relates to a wiring power-off integrated relay and a cable connection and protection method, which comprises a trapezoidal cylinder body, a plurality of piston rods uniformly arranged around the outer periphery of the trapezoidal cylinder body; an easy sublimation substance is arranged in the cylinder body; a long strip arc surface-shaped conductive bridge is fixed to the outer end of the piston rod; the outer end of the conductive bridge is covered with a long strip arc surface-shaped insulating baffle; electric connectors for connecting external wires are arranged on the two end faces of the trapezoidal cylinder body respectively; the piston rod drives the conductive bridge to simultaneously electrically contact or disconnect with the two electric connectors; in the initial state, the insulating baffles are circumferentially enclosed and start to cover the wires with wire insulation skins; the wiring power-off integrated relay and the cable connection and protection method can realize wire connection and relay circuit protection in one, realize integration of the whole with the wires, are small in size, and do not need to be installed in an electric box or a switch cabinet.

Description

Technical Field

[0001] This invention relates to the field of electrical components, specifically to an integrated wiring and power-off relay and a method for cable connection and protection. Background Technology

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the input quantity changes to a specified value. It has an interactive relationship between the control system and the controlled system. Commonly used in automated control circuits, it is essentially an "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits. Existing relays are generally independent units that need to be fixed in electrical boxes or switch cabinets, resulting in large size, inconvenient connections, and complex wiring. Summary of the Invention

[0003] To address the aforementioned problems in the existing technology, this invention provides an integrated wiring and power-off relay and a cable connection and protection method. This integrated wiring and power-off relay and cable connection and protection method can integrate wire connection and relay circuit protection into one unit. The whole unit is integrated with the wire, has a small size, and does not need to be installed in an electrical box or switch cabinet.

[0004] The technical solution of the present invention is as follows:

[0005] A wiring and power-off integrated relay includes a truncated cylinder body and a plurality of piston rods evenly arranged around the outer periphery of the truncated cylinder body; a sublimable substance is placed inside the cylinder body; an elongated arc-shaped conductive bridge is fixed to the outer end of each piston rod; an elongated arc-shaped insulating baffle is covered on the outside of the conductive bridge; electrical connectors for connecting external wires are respectively provided on both ends of the truncated cylinder body; the piston rod drives the conductive bridge to simultaneously make electrical contact with or disconnect from the two electrical connectors; in the initial state, the insulating baffles form a circumference, starting from the wire insulation and covering the wire.

[0006] The cylinder body is either frustum-shaped or a regular polygonal frustum-shaped.

[0007] The piston rod and the table-shaped cylinder are made of rigid, thermally conductive, and insulating material.

[0008] The electrical connector includes a cylindrical conductor and a fixing cap. The inner diameter of the outer open end of the cylindrical conductor is expanded to guide the insertion of the wire, and the outer diameter is reduced and threaded. The fixing cap is threaded to the outer circumferential surface of the open end of the cylindrical conductor and squeezes the cylindrical conductor inward during the engagement to tighten the wire.

[0009] The cylindrical conductor is formed by multiple arc-shaped conductive sheets with gaps between them, and the roots of the multiple arc-shaped conductive sheets are connected to each other; the inner end of the cylindrical conductor is filled with a compressible and deformable insulating and thermally conductive material; the insulating and thermally conductive material is in contact with the surface of the truncated cylinder.

[0010] The cylinder includes a centrally located storage cavity for holding easily sublimable substances and multiple cylindrical piston cavities symmetrically distributed around the center of the storage cavity; the storage cavity and the piston cavities are connected.

[0011] The number of piston rods is at least three.

[0012] The insulating baffle has abutment portions extending toward the conductor at both ends; in the initial state, the abutment portions abut against the surface of the conductor insulation; the insulating baffle is made of elastic material.

[0013] The piston cavity has a reduced diameter section at its outer end; an elastic ring is provided on the reduced neck; and the elastic ring is interference-fitted with the piston rod.

[0014] A cable connection and protection method, employing the aforementioned integrated wiring and power-off relay, includes the following steps:

[0015] ① Remove the insulation from the ends of the two wires that need to be connected to expose the battery cells;

[0016] ② First, put the fixing caps on the wires respectively, and then insert the cores of the two wires into the open ends of the two cylindrical conductors respectively;

[0017] ③ Screw the fixing cap onto the cylindrical conductor. Under the action of the fixing cap, the cylindrical conductor squeezes the wire, thereby tightly clamping the wire.

[0018] ④ In the initial state, the easily sublimable substance is solid, the piston rod is not in the extended state, the two ends of the conductive bridge are in electrical contact with the two cylindrical conductors respectively, and the main circuit can be energized normally;

[0019] ⑤ When excessive power or a short circuit occurs, the wires, cylindrical conductors, conductive bridges, insulating and heat-conducting materials, and piston rods transfer heat into the storage cavity. When the heat exceeds the sublimation temperature of the easily sublimable substance, the easily sublimable substance sublimates into vapor and pushes the piston rod outward under increased gas pressure. The piston rod pushes each conductive bridge and insulating baffle to move outward in a divergent manner, causing the conductive bridge and cylindrical conductor to lose electrical contact, thereby automatically cutting off the power to the main circuit.

[0020] The present invention has the following beneficial effects:

[0021] 1. This invention integrates wire connection and relay circuit protection into one unit, achieving seamless integration with the wires, resulting in a small size and eliminating the need for installation in electrical boxes or switch cabinets.

[0022] 2. This invention utilizes the sublimation property of easily sublimable substances. Substances with suitable sublimation temperatures can be selected according to specific needs, making it an automatic safety device for cables in various environments. The invention leverages the sublimation of easily sublimable substances into vapor at dangerous temperatures, increasing the pressure within the cylinder, thereby pushing the piston rod and ultimately raising the conductive bridge. This method primarily utilizes the chemical properties of the substance itself, with minimal mechanical transmission, stable and reliable operation, and a long service life. Furthermore, easily sublimable substances can re-condense after the temperature decreases, ensuring repeated use, an extremely long functional lifespan, and protection against damage from electric arcs.

[0023] 3. By setting an elastic ring, the present invention can keep the conductive bridge in a high position after the main circuit is de-energized when the conductive bridge is raised to a high position, thus preventing the easily sublimable material from re-condensing after the temperature drops and causing the conductive bridge to fall again and cause an accident; and it can also prevent the conductive bridge and insulating baffle from being accidentally deployed due to gravity.

[0024] 4. After maintenance is completed, the operator of this invention can simply press the insulating baffle to restore the main circuit to the conductive state and the relay to the initial state. The operation is simple and safe.

[0025] 5. The overall shape of this invention is long and narrow, extending in the same direction as the length of the conductor. Therefore, it occupies a small volume, has a simple and smooth appearance, and has a wide range of applications. At the same time, it will not conflict with other electrical components in terms of space and function.

[0026] 6. The conductive bridge and insulating baffle of the present invention can achieve divergent expansion and convergence, which can significantly increase the conductive contact area while achieving opening and closing. Furthermore, the insulating baffle can effectively shield the conductive part of the wire, ensuring safety and reliability. Moreover, after the conductive bridge rises and the power is cut off, a gap is formed, which is conducive to timely heat dissipation and protects the safety of components.

[0027] 7. The cylindrical conductor structure of the present invention not only facilitates wire insertion, but also, combined with the setting of the fixing cap, enables the wire to be securely and detachably fixed, making wire connection simple, fast, and safe. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the relay in its initial state according to the present invention;

[0029] Figure 2 This is a schematic diagram of the relay of the present invention when the power is too high or there is a short circuit;

[0030] Figure 3 This is a radial cross-sectional view of the relay of the present invention in its initial state;

[0031] Figure 4 This is a radial cross-sectional view of the relay of the present invention when the power is too high or there is a short circuit.

[0032] The reference numerals in the figure are as follows:

[0033] 1. Bent-shaped cylinder body; 11. Storage cavity; 12. Piston cavity; 121. Reduction section; 122. Elastic ring; 2. Piston rod; 3. Conductive bridge; 4. Insulating baffle; 41. Abutment part; 5. Wire; 6. Electrical connector; 61. Cylindrical conductor; 62. Fixing cap; 63. Insulating and heat-conducting material; 7. Easily sublimable substance. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0035] See Figures 1 to 4 A wiring and power-off integrated relay includes a truncated cylinder 1 and a plurality of piston rods 2 evenly arranged around the outer circumference of the truncated cylinder 1; a sublimable substance 7 is placed inside the cylinder 1; an elongated arc-shaped conductive bridge 3 is fixed to the outer end of the piston rod 2; an elongated arc-shaped insulating baffle 4 covers the conductive bridge 3; electrical connectors 6 for connecting external wires 5 are respectively provided on both ends of the truncated cylinder 1; the piston rod 2 drives the conductive bridge 3 to simultaneously make electrical contact or disconnect with the two electrical connectors 6; in the initial state, each of the insulating baffles 4 forms a circumference and covers the wire 5 starting from the insulation of the wire 5.

[0036] Furthermore, the cylinder body 1 is frustum-shaped or a regular polygonal frustum-shaped.

[0037] Furthermore, the piston rod 2 and the table-shaped cylinder 1 are made of rigid, thermally conductive, and insulating material.

[0038] Furthermore, the electrical connector 6 includes a cylindrical conductor 61 and a fixing cap 62. The inner diameter of the outer open end of the cylindrical conductor 61 is expanded to guide the insertion of the wire 5, and the outer diameter is reduced and threaded. The fixing cap 62 is threaded with the outer circumferential surface of the open end of the cylindrical conductor 61 and squeezes the cylindrical conductor 61 inward during the engagement process to tighten the wire 5.

[0039] Furthermore, the cylindrical conductor 61 is formed by the gaps between multiple arc-shaped conductive sheets, and the roots of the multiple arc-shaped conductive sheets are connected to each other; the inner end of the cylindrical conductor 61 is filled with a compressible and deformable insulating and thermally conductive material 63; the insulating and thermally conductive material 63 is in contact with the surface of the truncated cylinder 1.

[0040] Furthermore, the cylinder 1 includes a centrally located storage cavity 11 for holding the easily sublimable substance 7 and a plurality of cylindrical piston cavities 12 symmetrically distributed around the center of the storage cavity 11; the storage cavity 11 and the piston cavities 12 are in communication.

[0041] Furthermore, the number of piston rods 2 is at least three. In this embodiment, the number of piston rods 2 is four, and correspondingly, the number of insulating baffles 4 and conductive bridges 3 is also four.

[0042] Furthermore, the insulating baffle 4 has abutment portions 41 extending toward one side of the conductor 5 at both ends; in the initial state, the abutment portions 41 abut against the surface of the insulation of the conductor 5; the insulating baffle 4 is made of elastic material.

[0043] Furthermore, a reduced diameter portion 121 is provided at the outer end of the piston chamber 12; an elastic ring 122 is provided on the reduced diameter portion 121; the elastic ring 122 is interference-fitted with the piston rod 2.

[0044] A cable connection and protection method, employing the aforementioned integrated wiring and power-off relay, includes the following steps:

[0045] ① Remove the insulation from the ends of the two wires 5 that need to be connected, exposing the battery cells;

[0046] ② First, put the fixing caps 62 onto the wires 5 respectively, and then insert the cores of the two wires 5 into the open ends of the two cylindrical conductors 61 respectively;

[0047] ③ Screw the fixing cap 62 onto the cylindrical conductor 61. Under the action of the fixing cap 62, the cylindrical conductor 61 squeezes the wire 5, thereby tightly clamping the wire 5.

[0048] ④See Figure 1 and Figure 3 In the initial state, the easily sublimable substance 7 is solid, the piston rod 2 is not in the extended state, the two ends of the conductive bridge 3 are in electrical contact with the two cylindrical conductors 61 respectively, and the main circuit can be energized normally.

[0049] ⑤ See Figure 2 and Figure 4 When excessive power or a short circuit occurs, the conductor 5, the cylindrical conductor 61, the conductive bridge 3, the insulating and heat-conducting material 63, and the piston rod 2 transfer heat into the storage cavity 11. When the sublimation temperature of the easily sublimable substance 7 is exceeded, the easily sublimable substance 7 sublimates into vapor and pushes the piston rod 2 outward under the increased gas pressure. The piston rod 2 pushes each conductive bridge 3 and the insulating baffle 4 to move outward in a divergent manner, causing the conductive bridge 3 and the cylindrical conductor 61 to lose electrical contact, thereby automatically cutting off the power to the main circuit.

[0050] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A wiring-integrated power-off relay, characterized in that: The device includes a truncated cylinder body (1) and multiple piston rods (2) evenly arranged around the outer periphery of the truncated cylinder body (1); a sublimable substance (7) is placed inside the cylinder body (1); an elongated arc-shaped conductive bridge (3) is fixed to the outer end of each piston rod (2); an elongated arc-shaped insulating baffle (4) covers the conductive bridge (3); electrical connectors (6) for connecting external wires (5) are respectively provided on both ends of the truncated cylinder body (1); the piston rods (2) drive the conductive bridge (3) to make electrical contact with the two electrical connectors (6) simultaneously. Or disconnected; in the initial state, each of the insulating baffles (4) is arranged in a circumferential shape and the wire (5) is covered by the insulating sheath of the wire (5); the electrical connector (6) includes a cylindrical conductor (61) and a fixing cap (62); the cylindrical conductor (61) is formed by the gaps between multiple arc-shaped conductive sheets, and the roots of the multiple arc-shaped conductive sheets are connected to each other; the inner end of the cylindrical conductor (61) is filled with a compressible and deformable insulating and thermally conductive material (63); the insulating and thermally conductive material (63) is in contact with the surface of the truncated cylinder (1).

2. The integrated wiring and power-off relay as described in claim 1, characterized in that: The cylinder body (1) is frustum-shaped or regular polygonal frustum-shaped.

3. The integrated wiring and power-off relay as described in claim 1, characterized in that: The piston rod (2) and the platform-shaped cylinder (1) are made of rigid thermally conductive and insulating material.

4. The integrated wiring and power-off relay as described in claim 1, characterized in that: The inner diameter of the outer opening end of the cylindrical conductor (61) is expanded to guide the insertion of the wire (5), and the outer diameter is reduced and threaded. The fixing cap (62) is threaded with the outer circumferential surface of the opening end of the cylindrical conductor (61) and squeezes the cylindrical conductor (61) inward during the engagement process to tighten the wire (5).

5. The integrated wiring and power-off relay as described in claim 1, characterized in that: The cylinder (1) includes a storage cavity (11) located at the center for placing easily sublimable substances (7) and a plurality of cylindrical piston cavities (12) symmetrically distributed around the center of the storage cavity (11); the storage cavity (11) and the piston cavities (12) are connected.

6. The integrated wiring and power-off relay as described in claim 1, characterized in that: The number of piston rods (2) is at least three.

7. The integrated wiring and power-off relay as described in claim 1, characterized in that: The insulating baffle (4) has abutment portions (41) extending toward the conductor (5) at both ends; in the initial state, the abutment portions (41) abut against the surface of the insulation of the conductor (5); the insulating baffle (4) is made of elastic material.

8. The integrated wiring and power-off relay as described in claim 5, characterized in that: The piston chamber (12) has a reduced diameter section (121) at its outer end; an elastic ring (122) is provided on the reduced diameter section (121); the elastic ring (122) is interference-fitted with the piston rod (2).

9. A cable connection and protection method, employing the integrated power-off relay as described in claim 5 or 8, comprising the following steps: ① Remove the insulation from the ends of the two wires (5) that need to be connected, exposing the battery core; ② First, put the fixing cap (62) onto the wire (5) respectively, and then insert the core of the two wires (5) into the open ends of the two cylindrical conductors (61) respectively; ③ Screw the fixing cap (62) onto the cylindrical conductor (61). Under the action of the fixing cap (62), the cylindrical conductor (61) squeezes the wire (5) to tighten the wire (5); ④ In the initial state, the easily sublimable substance (7) is solid, the piston rod (2) is not in an extended state, the two ends of the conductive bridge (3) are in electrical contact with the two cylindrical conductors (61) respectively, and the main circuit can be energized normally; ⑤ When excessive power or short circuit occurs, the wire (5), cylindrical conductor (61), conductive bridge (3), insulating and heat-conducting material (63), and piston rod (2) transfer heat into the storage cavity (11). When the sublimation temperature of the easily sublimable substance (7) is exceeded, the easily sublimable substance (7) sublimates into vapor and pushes the piston rod (2) outward under the increased gas pressure. The piston rod (2) pushes each conductive bridge (3) and insulating baffle (4) outward in a divergent manner, so that the conductive bridge (3) and cylindrical conductor (61) are separated from electrical contact, thereby automatically cutting off the power to the main line.

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