Anti-pinch device for rolling gate type battery changing cabinet

Abstract

The utility model relates to an anti-pinch device for a rolling gate type battery changing cabinet, which belongs to the technical field of battery changing cabinets and comprises a detection feedback module, a power supply module, a control module and a rolling gate motor. The detection feedback module is used for detecting whether foreign matters exist at the opening of the rolling gate; the power supply module comprises a power supply driving circuit and is used for supplying power to the whole circuit; the control module comprises a power supply control relay, a direction control relay, a door opening driving circuit and a direction control driving circuit; the rolling gate motor is connected with the power supply control relay and the direction control relay and used for driving the rolling gate to be opened and closed. In the door closing process of the rolling gate, once the detection feedback module detects a foreign matter, power supply of the rolling gate motor can be cut off through the control module, so that the rolling gate motor quickly stops the door closing action, clamping injury is prevented, and the use safety of the battery replacement cabinet is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery replacing cabinet technical field, specifically is a kind of for roll shutter door type battery replacing cabinet's anti-pinch device. BACKGROUND

[0002] With the development of science and technology and the increasing demand for convenient energy supply, battery replacing cabinets, as a new type of equipment, are gradually widely used. Among them, the roll shutter door type battery replacing cabinet has certain advantages in space utilization and operation convenience due to its unique up-down door opening mode. It adopts a roll shutter type up-down translation door structure, and users can realize the opening and closing of the door through control signals, so as to conveniently take out or store batteries and other operations. This design improves the use efficiency and flexibility of the battery replacing cabinet to a certain extent, and is suitable for various scenes, such as electric bicycle battery replacing service stations in cities.

[0003] However, the anti-pinch scheme adopted by the roll shutter door type battery replacing cabinet has obvious defects. Most of the existing anti-pinch schemes use a measurement and control system with CPU to realize the function, and the realization of the function is highly dependent on software programs. Due to the drawbacks of program runaway of CPU, once the program is abnormal, the entire anti-pinch function may fail, and the situation of pinching cannot be detected in time and the door closing action is stopped. This makes the scheme have serious safety hazards, which may cause the user's hand or other objects to be pinched, not only causing physical injury and property loss to the user, but also affecting the normal use and promotion of the battery replacing cabinet, and reducing the user's trust in the battery replacing cabinet. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of anti-pinch device for roll shutter door type battery replacing cabinet to solve the problems in the related art, and the device solves the stability of roll shutter door anti-pinch function.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] The utility model discloses a kind of for roll-up gate type battery replacement cabinet's anti-pinch device, including detection feedback module, power supply module, control module and roll-up gate motor;The detection feedback module is used to detect whether there is foreign matter in roll-up gate entrance;The power supply module includes power supply driving circuit, for powering the entire circuit;The control module includes power supply control relay, direction control relay, door opening driving circuit and direction control driving circuit;The roll-up gate motor is connected with power supply control relay, direction control relay, for driving the opening and closing of roll-up gate;Wherein, the power supply control relay is connected with power supply driving circuit, for controlling the power-on or power-off of roll-up gate motor;The direction control driving circuit is connected with direction control relay, and the direction control driving circuit is used to control the state of direction control relay according to door opening signal S1, to further control the rotating direction of roll-up gate motor;The direction control relay is used to control the rotating direction of roll-up gate motor;The power supply driving circuit is powered according to door opening signal S1 and door closing signal S2 for the entire circuit;When it is door opening signal S1, door opening driving circuit is powered, and power supply driving circuit is simultaneously supplied to detection feedback module and door opening driving circuit through power supply control relay;When it is door closing signal S2, door opening driving circuit is powered off, and then power supply driving circuit, power supply control relay and detection feedback module are connected in series;At this time, if detection feedback module acts, then detection feedback module cuts off circuit, and power supply control relay cuts off power supply driving circuit to roll-up gate motor.

[0007] Using the above scheme, in the process of roll-up gate closing, once foreign matter is detected by detection feedback module, the power supply of roll-up gate motor can be cut off through control module, so that it can stop closing action quickly, prevent injury and ensure the safety of battery replacement cabinet.

[0008] The detection and feedback module includes a laser diffuse reflection photoelectric switch, and the control end of the laser diffuse reflection photoelectric switch is connected to a +24V power supply.

[0009] Using the above scheme, the laser diffuse reflection photoelectric switch has high precision and high sensitivity, can accurately detect whether there is foreign matter in roll-up gate entrance, and reduces the occurrence of misjudgment; In relatively dark or dusty environment, it can still work normally and reliably detect foreign matter.

[0010] The power supply driving circuit is composed of diodes D1 and D2, resistors R3, R4 and R5, and transistors Q2 and Q3; the positive pole of the diode D1 is connected with the opening door signal S1, and the positive pole of the diode D2 is connected with the closing door signal S2; one end of the resistor R3 is connected with the negative poles of the diodes D1 and D2, and the other end is connected with the base of the transistor Q2; one end of the resistor R4 is connected with the base of the transistor Q2, and the other end is grounded; one end of the resistor R5 is connected with the base of the transistor Q3, and the other end is connected with the collector of the transistor Q2; the emitter of the transistor Q2 is grounded; the emitter of the transistor Q3 is connected with a +24V power supply, and the collector is connected with the power supply end of the power supply control relay and the power supply end of the opening door driving circuit, thereby supplying power for the power supply control relay and the opening door driving circuit.

[0011] By receiving the opening door signal S1 and the closing door signal S2, the power supply for the related circuit can be provided according to different operation requirements, and when the opening door operation is performed, the opening door driving circuit and the related control circuit can be supplied with power in time, thereby ensuring the smooth opening door operation.

[0012] The opening door driving circuit is composed of a diode D3, resistors R1 and R2, and a transistor Q1; the positive pole of the diode D3 is connected with the opening door signal S1, and the negative pole is connected with one end of the resistor R1; the other end of the resistor R1 is connected with the base of the transistor Q1; one end of the resistor R2 is connected with the base of the transistor Q1, and the other end is grounded; the emitter of the transistor Q1 is grounded, and the collector is connected with the coil connection end of the power supply control relay, thereby making the power supply control relay operate when the opening door signal S1 is at a high level.

[0013] When the opening door signal S1 is at a high level, the power supply control relay can be reliably made to operate, thereby controlling the power supply of the rolling shutter door motor and realizing the accurate opening door operation, so that the rolling shutter door can be quickly and smoothly opened after the user sends the opening door signal S1.

[0014] The direction control driving circuit is composed of a diode D4, resistors R6 and R7, and a transistor Q4; the positive pole of the diode D4 is connected with the opening door signal S1, and the negative pole is connected with one end of the resistor R6; the other end of the resistor R6 is connected with the base of the transistor Q4; one end of the resistor R7 is connected with the base of the transistor Q4, and the other end is grounded; the emitter of the transistor Q4 is grounded, and the collector is connected with the coil connection end of the direction control relay, thereby controlling the rotating direction of the rolling shutter door motor by controlling the direction control relay.

[0015] By the above scheme, the state of the direction control relay can be accurately controlled according to the opening door signal S1, thereby realizing the control of the rotating direction of the rolling shutter door motor and meeting the requirements of the motor forward and reverse rotation during the opening and closing door operation. When the opening door signal S1 is received, the motor can be made to rotate forward to realize the opening door; when the closing door signal S2 is received, the motor can be made to rotate reversely to realize the closing door.

[0016] The normally open contact of the power supply control relay is connected in series in the power supply circuit of the shutter motor, one end of the normally open contact is connected with the +24V power supply, and the other end is connected with the connection terminal of the shutter motor; when the normally open contact of the power supply control relay is closed, the power supply driving circuit supplies power to the shutter motor; when the normally open contact of the power supply control relay is disconnected, the shutter motor loses power.

[0017] By using the above scheme, the signal from the laser diffuse reflection photoelectric switch can be received, when foreign matter is detected, the power supply of the shutter motor is cut off in time to prevent the foreign matter accident, so that when the shutter door is blocked by foreign matter, the photoelectric switch sends a signal, the power supply control relay acts quickly to cut off the power supply of the motor, and the shutter door stops closing.

[0018] The shutter motor adopts a permanent magnet DC speed reduction motor, one connection terminal of the coil of the direction control relay is connected with the collector of the triode Q4 in the direction control driving circuit, and the other connection terminal is connected with the +24V power supply; one end of the normally closed contact of the direction control relay is connected with one connection terminal of the shutter motor, and the other end is connected with the ground; one end of the normally open contact of the direction control relay is connected with the other connection terminal of the shutter motor, and the other end is connected with the +24V power supply; the direction control relay controls the rotating direction of the shutter motor by changing the contact state.

[0019] By using the above scheme, the rotating direction of the shutter motor can be accurately controlled by cooperating with the direction control driving circuit, and the normal opening and closing of the shutter door is ensured, so that when the opening signal S1 is received, the motor can be rotated in the forward direction to open the shutter door; when the closing signal S2 is received, the motor is reversed to close the shutter door, and the forward and reverse rotation of the motor is controlled by the direction control relay, so that the accurate action of the shutter door under different operation requirements is realized. This control method is simple and effective, and can well match the control logic of the entire anti-pinch device to ensure the safe operation of the shutter door of the battery replacement cabinet.

[0020] By using the above scheme, the following advantages are achieved:

[0021] 1. The anti-pinch device for the rolling shutter door type battery replacement cabinet comprises a detection feedback module, a power supply module, a control module and a rolling shutter door motor; the detection feedback module is used for detecting whether there is foreign matter in the rolling shutter door; the power supply module comprises a power supply driving circuit and is used for supplying power to the entire circuit; the control module comprises a power supply control relay, a direction control relay, an opening door driving circuit and a direction control driving circuit; the rolling shutter door motor is connected with the power supply control relay and the direction control relay and is used for driving the opening and closing of the rolling shutter door; wherein the power supply control relay is connected with the power supply driving circuit and is used for controlling the power-on or power-off of the rolling shutter door motor; the direction control driving circuit is connected with the direction control relay, the direction control driving circuit is used for controlling the state of the direction control relay according to an opening door signal S1, and then the rotating direction of the rolling shutter door motor is controlled; the direction control relay is used for controlling the rotating direction of the rolling shutter door motor; the power supply driving circuit supplies power to the entire circuit according to the opening door signal S1 and a closing door signal S2; when the opening door signal S1 is input, the opening door driving circuit is powered on, the power supply driving circuit supplies power to the detection feedback module and the opening door driving circuit through the power supply control relay; when the closing door signal S2 is input, the opening door driving circuit is powered off, and then the power supply driving circuit, the power supply control relay and the detection feedback module are connected in series; if the detection feedback module moves at this time, the detection feedback module cuts off the circuit, and the power supply control relay cuts off the power supply of the power supply driving circuit to the rolling shutter door motor; in the process of closing the rolling shutter door, once the detection feedback module detects foreign matter, the power supply of the rolling shutter door motor can be cut off through the control module, so that the closing action of the rolling shutter door is rapidly stopped, the injury is prevented, and the safety of the battery replacement cabinet is ensured.

[0022] 2. The detection and feedback module comprises a laser diffuse reflection photoelectric switch, and the control end of the laser diffuse reflection photoelectric switch is connected with a 24V power supply; one end of the normally closed contact of the laser diffuse reflection photoelectric switch is connected to the coil connection end of the power supply control relay, and the other end is grounded; in the closing door state, when the laser diffuse reflection photoelectric switch detects foreign matter, the internal normally closed contact is disconnected; the laser diffuse reflection photoelectric switch has the characteristics of high precision and high sensitivity, can accurately detect whether there is foreign matter in the rolling shutter door, and reduces the occurrence of misjudgment; in a relatively dark or dusty environment, the laser diffuse reflection photoelectric switch can still work normally and reliably detect foreign matter. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail in combination with the drawings according to the specific embodiments of the utility model, wherein:

[0024] Figure 1 is the circuit principle diagram of the anti-pinch device for the rolling shutter door type battery replacement cabinet. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] As shown in the formula, the anti-pinch device for the roller shutter type battery replacement cabinet in the embodiment comprises a detection feedback module, a power supply module, a control module and a roller shutter motor. Figure 1 The detection feedback module is used for detecting whether there is foreign matter in the roller shutter door. The power supply module comprises a power supply driving circuit and is used for supplying power to the entire circuit. The control module comprises a power supply control relay, a direction control relay, an opening door driving circuit and a direction control driving circuit. The roller shutter motor is connected with the power supply control relay and the direction control relay and is used for driving the opening and closing of the roller shutter. The power supply control relay is connected with the power supply driving circuit and is used for controlling the power-on or power-off of the roller shutter motor. The direction control driving circuit is connected with the direction control relay and is used for controlling the state of the direction control relay according to the opening door signal S1, so as to control the rotating direction of the roller shutter motor. The direction control relay is used for controlling the rotating direction of the roller shutter motor. The power supply driving circuit supplies power to the entire circuit according to the opening door signal S1 and the closing door signal S2. When the opening door signal S1 is obtained, the opening door driving circuit is powered on, and the power supply driving circuit supplies power to the detection feedback module and the opening door driving circuit through the power supply control relay. When the closing door signal S2 is obtained, the opening door driving circuit is powered off, and then the power supply driving circuit, the power supply control relay and the detection feedback module are connected in series. At this time, if the detection feedback module moves, the detection feedback module cuts off the circuit, and the power supply control relay cuts off the power supply of the power supply driving circuit to the roller shutter motor. In the process of closing the roller shutter door, once the detection feedback module detects foreign matter, the power supply of the roller shutter motor can be cut off through the control module, so that the closing action of the roller shutter motor is stopped quickly, foreign matter is prevented from being pinched, and the safety of the battery replacement cabinet is ensured.

[0027] The detection and feedback module comprises a laser diffuse reflection photoelectric switch. The model of the laser diffuse reflection photoelectric switch is PZ-LS61NPN, the power voltage range is 12-24VDC, the working mode is normally closed, the detection distance can be adjusted to 30cm, the output mode is NPN, and the output mode is three-wire. One end of the photoelectric switch is connected with the control end of the power supply control relay and is used for detecting whether there is foreign matter in the roller shutter door. When foreign matter is detected, the internal switch is opened, and when no foreign matter is detected, the internal switch is closed, so as to control the action of the power supply control relay.

[0028] Specifically, the control end of the laser diffuse reflection photoelectric switch is connected to a +24V power supply; one end of the normally closed contact of the laser diffuse reflection photoelectric switch is connected to the coil connection end of the power supply control relay, and the other end is grounded; in the closed door state, when the laser diffuse reflection photoelectric switch detects a foreign object, the internal normally closed contact is disconnected; due to the high precision and high sensitivity of the laser diffuse reflection photoelectric switch, the laser diffuse reflection photoelectric switch can accurately detect whether there is a foreign object at the door opening, reducing the occurrence of misjudgment; in a relatively dark or dusty environment, it can still work normally and reliably detect foreign objects.

[0029] The power supply driving circuit is composed of diodes D1 and D2, resistors R3, R4 and R5, and transistors Q2 and Q3; the anode of diode D1 is connected to the open door signal S1, and the anode of diode D2 is connected to the closed door signal S2; one end of resistor R3 is connected to the negative connection point of diodes D1 and D2, and the other end is connected to the base of transistor Q2; one end of resistor R4 is connected to the base of transistor Q2, and the other end is grounded; one end of resistor R5 is connected to the base of transistor Q3, and the other end is connected to the collector of transistor Q2; the emitter of transistor Q2 is grounded; the emitter of transistor Q3 is connected to a +24V power supply, and the collector is connected to the power supply end of the power supply control relay and the power supply end of the open door driving circuit, providing power for the power supply control relay and the open door driving circuit; by receiving the open door signal S1 and the closed door signal S2, the relevant circuit can provide power according to different operation requirements; when the door is opened, the open door driving circuit and the related control circuit can be powered in time to ensure smooth door opening.

[0030] The open door driving circuit is composed of diode D3, resistors R1 and R2, and transistor Q1; the anode of diode D3 is connected to the open door signal S1, and the negative electrode is connected to one end of resistor R1; the other end of resistor R1 is connected to the base of transistor Q1; one end of resistor R2 is connected to the base of transistor Q1, and the other end is grounded; the emitter of transistor Q1 is grounded, and the collector is connected to the coil connection end of the power supply control relay; when the open door signal S1 is high, the power supply control relay is actuated; when the open door signal S1 is high, the power supply control relay can be reliably actuated, thereby controlling the power supply of the roller shutter door motor and realizing precise door opening operation; after the user sends the open door signal S1, the roller shutter door can be quickly and smoothly opened.

[0031] The direction control drive circuit is composed of diode D4, resistors R6 and R7, and transistor Q4; the positive electrode of diode D4 is connected with the door opening signal S1, and the negative electrode is connected with one end of resistor R6; the other end of resistor R6 is connected with the base of transistor Q4; one end of resistor R7 is connected with the base of transistor Q4, and the other end is grounded; the emitter of transistor Q4 is grounded, and the collector is connected with the coil connection terminal of the direction control relay; the rotation direction of the rolling shutter door motor is controlled by controlling the direction control relay; the state of the direction control relay can be accurately controlled according to the door opening signal S1, and the rotation direction of the rolling shutter door motor is controlled, so as to meet the needs of the motor forward and reverse rotation when the rolling shutter door is opened and closed. When the door opening signal S1 is received, the motor can be made to rotate forward to open the door; when the door closing signal S2 is received, the motor can be made to rotate reversely to close the door.

[0032] The normally open contact of the power supply control relay is connected in series in the power supply circuit of the rolling shutter door motor, one end of the normally open contact is connected with the +24V power supply, and the other end is connected with the connection terminal of the rolling shutter door motor; when the normally open contact of the power supply control relay is closed, the power supply drive circuit supplies power to the rolling shutter door motor; when the normally open contact of the power supply control relay is disconnected, the rolling shutter door motor loses power. In this embodiment, the power supply control relay is a DC relay with the model of HF115F024-1HS3, which has the characteristics of double knife single throw. The normally open contact thereof is connected in series in the power supply circuit of the rolling shutter door motor, and cooperates with the direction control relay to control the power supply on-off of the rolling shutter door motor. When the laser diffuse reflection photoelectric switch detects foreign matter or the internal switch is disconnected, the power supply control relay responds quickly to cut off the power supply of the motor, effectively preventing the foreign matter accident and ensuring the safety of the rolling shutter door closing.

[0033] The coil connection terminal of the direction control relay is connected with the collector of the transistor Q4 in the direction control drive circuit, and the other coil connection terminal is connected with the +24V power supply; one end of the normally closed contact of the direction control relay is connected with one connection terminal of the rolling shutter door motor, and the other end is grounded; one end of the normally open contact of the direction control relay is connected with the other connection terminal of the rolling shutter door motor, and the other end is connected with the +24V power supply; the direction control relay controls the rotation direction of the rolling shutter door motor by changing the contact state. Through cooperation with the direction control drive circuit, the rotation direction of the rolling shutter door motor can be accurately controlled, and the normal opening and closing of the rolling shutter door can be ensured, so that when the door opening signal S1 is received, the motor can be made to rotate forward to open the rolling shutter door; when the door closing signal S2 is received, the motor can be made to rotate reversely to close the rolling shutter door. Similarly, the direction control relay of this embodiment has the model of OMRON_G6A-234P-ST-US-24VDC, which is a double-knife double-throw DC relay. The normally closed and normally open contacts thereof are respectively connected with different power supply terminals of the rolling shutter door motor, and the rotation direction of the rolling shutter door motor is controlled by changing the contact state, so as to realize the opening and closing actions of the rolling shutter door.

[0034] The roller shutter motor adopts a permanent magnet DC speed reduction motor, the positive power input end of which is connected with the normally open contact of the direction control relay, and the negative power input end is connected with the normally closed contact of the direction control relay. The positive and negative rotation is realized under the control of the relay, which drives the opening and closing of the roller shutter. The permanent magnet DC speed reduction motor has stable power output characteristics, which can provide sufficient power for the opening and closing of the roller shutter. At the same time, the positive and negative rotation of the motor is controlled by the direction control relay, which realizes the accurate action of the roller shutter under different operation requirements. This control method is simple and effective, which can be well matched with the control logic of the entire anti-pinch device, and ensures the safe operation of the roller shutter of the battery replacement cabinet.

[0035] As an example, the roller shutter motor adopts a permanent magnet DC speed reduction motor, the specific model of which is ZGA25RP, and the main parameters include rated voltage 24V, rated speed 50RPM, rated current 0.03A, and rated torque 1.7kg.cm. It is the power source for driving the movement of the roller shutter, and the power supply and rotation direction are controlled by the power supply control relay and the direction control relay.

[0036] In summary, one end of the laser diffuse reflection photoelectric switch is connected with the control end of the power supply control relay, which is used for detecting the foreign matter in the roller shutter opening and transmitting the signal to the power supply control relay. The normally open contact of the power supply control relay is connected in series in the power supply circuit of the roller shutter motor, which is used for controlling the power supply on-off of the roller shutter motor. The normally closed and normally open contacts of the direction control relay are connected with different power supply ends of the roller shutter motor, which are used for controlling the rotation direction of the roller shutter motor. The input end of the power supply driving circuit is connected with the door opening signal S1 and the door closing signal S2, and the output end is connected with the power supply end of the power supply control relay and the power supply end of the door opening driving circuit. The power supply driving circuit is composed of diodes D1 and D2, resistors R3, R4 and R5, and transistors Q2 and Q3. When at least one of the door opening signal S1 and the door closing signal S2 is high, the transistors Q2 and Q3 are turned on to supply power to the circuit. The input end of the door opening driving circuit is connected with the door opening signal S1, and the output end is connected with the coil connection end of the power supply control relay. The door opening driving circuit is composed of diode D3, resistors R1 and R2, and transistor Q1. When the door opening signal S1 is high, the transistor Q1 is turned on, and at the same time, the transistor Q3 is turned on, so that the coil of the power supply control relay is powered, the normally open contact of the power supply control relay is closed, and the roller shutter motor is powered. The input end of the direction control driving circuit is connected with the door opening signal S1, and the output end is connected with the coil connection end of the direction control relay. The direction control driving circuit is composed of diode D4, resistors R6 and R7, and transistor Q4. Figure 1When the door opening signal S1 is high, the transistor Q4 is turned on, the direction control relay coil is powered, the normally closed contact is opened, the normally open contact is closed, the rolling door motor power supply direction is positive up and negative down, and the rolling door motor rotates forward; when the door opening signal S1 is low, the transistor Q4 is turned off, the direction control relay coil is powered off, the normally open contact is opened, the normally closed contact is closed, the rolling door motor power supply direction is negative up and positive down, and the rolling door motor rotates reversely, so that the forward and reverse rotation of the rolling door motor is realized.

[0037] The anti-pinch device can accurately control the door opening and closing process, effectively avoids the risk of pinching caused by software failure, and has high reliability.

[0038] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. An anti-pinch device for a rolling shutter type power exchange cabinet, characterized in that: Including detection feedback module, power supply module, control module and rolling shutter door motor; The detection feedback module is used to detect whether there is a foreign object at the rolling shutter door; The power supply module includes a power supply drive circuit for supplying power to the entire circuit; The control module includes a power supply control relay, a direction control relay, a door opening drive circuit and a direction control drive circuit; The rolling shutter door motor is connected to the power supply control relay and the direction control relay to drive the opening and closing of the rolling shutter door; wherein, The power supply control relay is connected to the power supply drive circuit and is used to control the power supply or power loss of the rolling shutter door motor; The direction control drive circuit is connected to the direction control relay, and the direction control drive circuit is used to control the state of the direction control relay according to the door opening signal S1, thereby controlling the rotation direction of the rolling shutter door motor; the direction control relay is used to control the rotation direction of the rolling shutter door motor; The power supply driving circuit supplies power to the entire circuit according to the door opening signal S1 and the door closing signal S2; When the door opening signal S1 is on, the door opening drive circuit is energized, and the power supply drive circuit simultaneously supplies power to the detection feedback module and the door opening drive circuit through the power supply control relay; When the door closing signal S2 is received, the door opening drive circuit loses power, and the power supply drive circuit, power supply control relay and detection feedback module are connected in series; at this time, if the detection feedback module is activated, the detection feedback module cuts off the circuit, and the power supply control relay cuts off the power supply drive circuit to supply power to the rolling door motor.

2. The anti-pinch device for a rolling shutter type power exchange cabinet according to claim 1, characterized in that: The detection and feedback module includes a laser diffuse reflection photoelectric switch, the control end of which is connected to a +24V power supply; one end of the normally closed contact of the laser diffuse reflection photoelectric switch is connected to the coil terminal of the power supply control relay, and the other end is grounded; in the closed state, when the laser diffuse reflection photoelectric switch detects a foreign object, its internal normally closed contact is disconnected.

3. The anti-pinch device for a rolling shutter type power exchange cabinet according to claim 2, characterized in that: The power supply drive circuit is composed of diodes D1 and D2, resistors R3, R4, R5, and transistors Q2 and Q3; the positive electrode of diode D1 is connected to the door opening signal S1, and the positive electrode of diode D2 is connected to the door closing signal S2; one end of resistor R3 is connected to the negative electrode connection point of diodes D1 and D2, and the other end is connected to the base of transistor Q2; one end of resistor R4 is connected to the base of transistor Q2, and the other end is grounded; one end of resistor R5 is connected to the base of transistor Q3, and the other end is connected to the collector of transistor Q2; the emitter of transistor Q2 is grounded; the emitter of transistor Q3 is connected to the +24V power supply, and the collector is connected to the power supply end of the power supply control relay and the power supply end of the door opening drive circuit, so as to supply power to the power supply control relay and the door opening drive circuit.

4. The anti-pinch device for a rolling shutter type power exchange cabinet according to claim 3, characterized in that: The door opening drive circuit is composed of a diode D3, resistors R1 and R2, and a transistor Q1; the positive electrode of the diode D3 is connected to the door opening signal S1, and the negative electrode is connected to one end of the resistor R1; the other end of the resistor R1 is connected to the base of the transistor Q1; one end of the resistor R2 is connected to the base of the transistor Q1, and the other end is grounded; the emitter of the transistor Q1 is grounded, and the collector is connected to the coil terminal of the power supply control relay. When the door opening signal S1 is at a high level, the power supply control relay is activated.

5. The anti-pinch device for a rolling shutter type power exchange cabinet according to claim 1, characterized in that: The direction control drive circuit is composed of a diode D4, resistors R6 and R7, and a transistor Q4; the positive electrode of the diode D4 is connected to the door opening signal S1, and the negative electrode is connected to one end of the resistor R6; the other end of the resistor R6 is connected to the base of the transistor Q4; one end of the resistor R7 is connected to the base of the transistor Q4, and the other end is grounded; the emitter of the transistor Q4 is grounded, and the collector is connected to the coil terminal of the direction control relay, and the rotation direction of the rolling shutter door motor is controlled by controlling the direction control relay.

6. The anti-pinch device for a rolling shutter type power exchange cabinet according to claim 4, characterized in that: The normally open contact of the power supply control relay is connected in series in the power supply circuit of the rolling shutter motor, one end of the normally open contact is connected to the +24V power supply, and the other end is connected to the connection terminal of the rolling shutter motor; when the normally open contact of the power supply control relay is closed, the power supply drive circuit supplies power to the rolling shutter motor; when the normally open contact of the power supply control relay is disconnected, the rolling shutter motor loses power.

7. The anti-pinch device for a rolling shutter type power exchange cabinet according to claim 5, characterized in that: The rolling shutter door motor adopts a permanent magnet DC reduction motor. The coil terminal of the direction control relay is connected to the collector of the transistor Q4 in the direction control drive circuit, and the other coil terminal is connected to the +24V power supply; one end of the normally closed contact of the direction control relay is connected to one terminal of the rolling shutter door motor, and the other end is grounded; one end of the normally open contact of the direction control relay is connected to the other terminal of the rolling shutter door motor, and the other end is connected to the +24V power supply; the direction control relay controls the rotation direction of the rolling shutter door motor by changing the contact state.

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