CN103681108A - Large-current electromagnetic relay - Google Patents

Abstract

The invention discloses a large-current electromagnetic relay. According to the large-current electromagnetic relay, a sampling assembly is fixedly inserted into steps at two sides of an energy-saving type large-current electromagnetic relay, an electronic sensor circuit board is installed on one lateral inner wall of the sampling assembly, two temperature sampling connection rings connected with two copper binding posts respectively and a current sampling magnetism-conductive ring are arranged on the circuit board, a temperature control circuit, a current control circuit, an alarm circuit and a disconnection execution circuit are arranged on the circuit board, a power supply positive pole connector N, a power supply negative pole connector E, a relay coil positive pole connector M and a signal amplification output connector K are installed on a plug at the outer side of the assembly in sequence, and the plug is provided with a connector socket with a lead led out from the lower portion. After being additionally provided with an overload and overheating sensor based on the prior art, the large-current electromagnetic relay has the advantages of being high in voltage resisting grade, small in size, low in energy consumption and long in service life, is safer to use, and can timely give an alarm and cut off an external overload power supply circuit.

Description

A kind of large-current electric magnetic relay

 

Technical field:

The present invention is a kind of electromagnetic relay with the short circuit that prevents current overload and cause, the unsafe factor such as overheated that is particularly suitable for installing and using on motor vehicle.

Background technology:

Existing " energy-saving high-current electromagnetic relay " patent No. is 200910065110.5, it is parallelly on a shell made from engineering plastics is topped bar to be fixed with two wiring copper posts, on copper post, be bolted with respectively a clamp nut, on each nut, be respectively equipped with helmet, between helmet, there is divider wall, in shell, below step, be provided with a recessed tubular yoke in interior envelope curve circle bottom surface, the moving work durm of a upper surface indent is housed in tubular yoke, on tubular yoke, concentric is equipped with and pushes away frame, pushing away adjusting rod below frame is spirally connected through tubular yoke center and the back-moving spring and the moving work durm that are arranged in moving work durm, regulating tank is arranged at moving work durm bottom, push away in the card holder centre bore above frame and divide plywood by red copper of pressure overshoot spring supporting, divide both sides above plywood to be respectively equipped with moving contact, two copper column bottoms are provided with fixed contact, between sound contact, be provided with a deciliter chamber, deciliter indoor temperature sensing sensor that is provided with, on deciliter outer casing inner wall of both sides, chamber, by yoke, one secondary strong magnet is installed, on outer casing underpart one side inwall, circuit control panel is installed, its electric wire is drawn through sealing shroud from stepped hole.Although it has, dielectric voltage withstand rank is high, volume is little, lightweight, energy consumption is low, the advantage that the life-span is long, and, overload-alarm overheated because of not having and short circuit cutting function, exist certain unsafe factor.

Summary of the invention:

The object of this invention is to provide the large-current electric magnetic relay that a kind of withstand voltage rank is high, volume is little, lightweight, energy consumption is low, the life-span is grown use safety and reliability.

Technical scheme of the present invention completes as follows, a kind of large-current electric magnetic relay, it comprises an energy-saving high-current electromagnetic relay, it is characterized in that: on the step of the square housing both sides of an energy-saving high-current electromagnetic relay, with draw-in groove insertion, be fixed with both sides and connect rectangular sampling assembly, on a side inwall of sampling assembly, an electronic sensor circuit board is installed, on circuit board, inwardly lead to two temperature sampling connecting rings that are connected with two wiring copper posts respectively, below a connecting ring, be parallel with the current sample magnetic guiding loop being connected with circuit board, on circuit board, be provided with temperature-control circuit, current control circuit, warning circuit and cut-out executive circuit, temperature-control circuit is to be connected with a diode D1 at positive source joint N end, on diode cathode, be parallel with two temperature sensor Q2 and Q3, between the output of temperature sensor Q3 and power cathode joint E, be in series with resistance R 3, R4, between two resistance, be connected with a triode Q4, the collector electrode of triode is connected on a signal output connector K, emitter is connected on power cathode joint, warning circuit is that the output at temperature sensor Q2 and Q3 is connected in parallel to a resistance R 5, and the other end of resistance R 5 is connected with a red light emitting diodes D3, and the other end of light-emitting diode is connected on power cathode joint, current control circuit is that the negative pole end at diode D1 is connected with a capacitor C, the other end of capacitor C is connected with the current-limiting resistance R1 current-limiting resistance R1 other end and is connected with respectively a current sensor Q1 and a voltage stabilizing didoe D2, and the output of current sensor Q1 is connected to a signal through resistance R 2 and amplifies on output end connector K, cutting off executive circuit is that the coil negative pole of electromagnetic relay J is connected to power cathode joint E above, and it is upper that relay coil positive pole is connected to assembly positive terminal M, on two copper posts of electromagnetic relay, is respectively equipped with external load power supply connector V, L, positive source joint N, anode connector E, relay coil positive terminal M and signal amplification out splice going splice K are arranged on the plug in assembly outside successively, on plug, be furnished with one by below draw the connector socket of wire, correspondingly with red light emitting diodes between two copper posts on assembly be provided with a transparent area.

The present invention sets up after an overload overheat sensor in prior art, the effect that not only have that withstand voltage rank is high, volume is little, energy consumption is low, the life-span is long, and use safer, can also and alarm and cut-out external load power supply circuits.

Accompanying drawing explanation:

Fig. 1 is structural representation of the present invention; Fig. 2 is the sampling assembly structure schematic diagram that sensor circuit board is installed; Fig. 3 is the relay construction schematic diagram taking off after sampling assembly; Fig. 4 is this practical electrical schematic diagram.

Embodiment:

Describe by reference to the accompanying drawings embodiment in detail, the present invention is improvements over the prior art, main improvement is on the square housing both sides of an energy-saving high-current electromagnetic relay 1 step 12, with draw-in groove 3 insertions, to be fixed with both sides to connect rectangular sampling assembly 2, on a side inwall of sampling assembly, an electronic sensor circuit board 11 is installed, on circuit board, inwardly lead to two temperature sampling connecting rings 5 and 7 that are connected with two wiring copper posts 6 respectively, below connecting ring 5, be parallel with the current sample magnetic guiding loop 4 being connected with circuit board, on circuit board, be provided with temperature-control circuit, current control circuit, warning circuit and cut-out executive circuit, temperature-control circuit is to be connected with a diode D1 at positive source joint N end, on diode cathode, be parallel with two temperature sensor Q2 and Q3, between the output of temperature sensor Q3 and power cathode joint E, be in series with resistance R 3, R4, between two resistance, be connected with a triode Q4, the collector electrode of triode is connected on a signal output connector K, emitter is connected on power cathode joint, warning circuit is that the output at temperature sensor Q2 and Q3 is connected in parallel to a resistance R 5, and the other end of resistance R 5 is connected with a red light emitting diodes D3, and the other end of light-emitting diode is connected on power cathode joint, current control circuit is that the negative pole end at diode D1 is connected with a capacitor C, the other end of capacitor C is connected with current-limiting resistance R1, the current-limiting resistance R1 other end is connected with respectively a current sensor Q1 and a voltage stabilizing didoe D2, and the output of current sensor Q1 is connected to a signal through resistance R 2 and amplifies on output end connector K, cutting off executive circuit is that the coil negative pole of electromagnetic relay J is connected to anode connector E above, and it is upper that relay coil positive pole is connected to assembly positive terminal M, on two copper posts of electromagnetic relay, is respectively equipped with external load power supply connector V and L, positive source joint N, anode connector E, relay coil positive terminal M and signal amplification out splice going splice K are arranged on the plug 9 in assembly outside successively, on plug, be furnished with one by below draw the connector socket 8 of wire, correspondingly with red light emitting diodes between two copper posts on sampling assembly be provided with a transparent area 10.

Operation principle of the present invention is: the direct current that positive source joint is introduced through diode D1 to current sensor Q1 and two temperature sensor Q2, Q3 power supply, current sensor Q1 when electric current is excessive after current sample assembly dynamic sampling amplifies out splice going splice K output signal by resistance R 2 to signal, when excess Temperature, by temperature sampling end dynamic sampling, two temperature sensor Q2, Q3 is through resistance R 3, the phase inverter that R4 and triode Q4 form is to out splice going splice K end output signal, through output current, light red light emitting diodes D3 simultaneously, out splice going splice K end receives the rear relay coil anode plug M terminal voltage that disconnects by external circuits after receiving signal, cut off V, connection between L, reach the object of protection power supply safety.

Claims (1)

1. a large-current electric magnetic relay, it comprises an energy-saving high-current electromagnetic relay, it is characterized in that: on the step of the square housing both sides of an energy-saving high-current electromagnetic relay, with draw-in groove insertion, be fixed with both sides and connect rectangular sampling assembly, on a side inwall of sampling assembly, an electronic sensor circuit board is installed, on circuit board, inwardly lead to two temperature sampling connecting rings that are connected with two wiring copper posts respectively, below a connecting ring, be parallel with the current sample magnetic guiding loop being connected with circuit board, on circuit board, be provided with temperature-control circuit, current control circuit, warning circuit and cut-out executive circuit, temperature-control circuit is to be connected with a diode D1 at positive source joint N end, on diode cathode, be parallel with two temperature sensor Q2 and Q3, between the output of temperature sensor Q3 and power cathode joint E, be in series with resistance R 3, R4, between two resistance, be connected with a triode Q4, the collector electrode of triode is connected on a signal output connector K, emitter is connected on power cathode joint, warning circuit is that the output at temperature sensor Q2 and Q3 is connected in parallel to a resistance R 5, and the other end of resistance R 5 is connected with a red light emitting diodes D3, and the other end of light-emitting diode is connected on power cathode joint, current control circuit is that the negative pole end at diode D1 is connected with a capacitor C, the other end of capacitor C is connected with the current-limiting resistance R1 current-limiting resistance R1 other end and is connected with respectively a current sensor Q1 and a voltage stabilizing didoe D2, and the output of current sensor Q1 is connected to a signal through resistance R 2 and amplifies on output end connector K, cutting off executive circuit is that the coil negative pole of electromagnetic relay J is connected to power cathode joint E above, and it is upper that relay coil positive pole is connected to assembly positive terminal M, on two copper posts of electromagnetic relay, is respectively equipped with external load power supply connector V, L, positive source joint N, anode connector E, relay coil positive terminal M and signal amplification out splice going splice K are arranged on the plug in assembly outside successively, on plug, be furnished with one by below draw the connector socket of wire, correspondingly with red light emitting diodes between two copper posts on assembly be provided with a transparent area.

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