阅读说明：本技术 一种电动汽车充电枪电磁锁控制装置及控制方法 (Control device and control method for electromagnetic lock of electric vehicle charging gun ) 是由 王晓波 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种电动汽车充电枪电磁锁控制装置,包括电磁锁驱动信号控制模块,电磁锁驱动控制电路,设备故障停电为电磁锁自动解锁提供电源的储能电路；电磁锁驱动控制电路包括通过电磁锁控制线圈正反向导通分别控制充电枪锁枪及解锁的电磁锁控制子电路,当出现停电或者设备故障时,通过储能电路提供的电源控制电磁锁控制线圈自动反向导通对电磁锁进行自动解锁,该电动汽车充电枪电磁锁控制装置只采用一路高低电平驱动来控制电磁锁装置,电磁锁中任一单一器件的损坏都不会导致长时间为电磁锁通电,避免长时间通电而造成电磁锁的损坏或电源短路,杜绝安全隐患,在断电或者设备故障情况下能控制电磁锁进行自动解锁并避免需要人手直接操作解锁。(The invention discloses an electromagnetic lock control device of an electric automobile charging gun, which comprises an electromagnetic lock driving signal control module, an electromagnetic lock driving control circuit and an energy storage circuit, wherein the energy storage circuit is used for supplying power to the electromagnetic lock for automatic unlocking when equipment fails and power is cut off; the electromagnetic lock drive control circuit comprises an electromagnetic lock control sub-circuit which is used for controlling the gun of the charging gun and unlocking respectively through forward and reverse conduction of an electromagnetic lock control coil, when power failure or equipment failure occurs, the electromagnetic lock control coil is controlled to automatically and reversely conduct to automatically unlock the electromagnetic lock through a power supply provided by an energy storage circuit, the electromagnetic lock control device of the charging gun of the electric automobile only adopts high and low level drive all the way to control an electromagnetic lock device, the electromagnetic lock cannot be electrified for a long time due to damage of any single device in the electromagnetic lock, damage or power short circuit of the electromagnetic lock caused by long-time electrification is avoided, potential safety hazards are avoided, the electromagnetic lock can be controlled to automatically unlock under the condition of power failure or equipment failure, and manual direct operation unlocking is avoided.)

1. The utility model provides an electric automobile rifle electromagnetic lock control device that charges which characterized in that: the electromagnetic lock control system comprises an electromagnetic lock driving signal control module for controlling an electromagnetic lock through a single phase control signal, an electromagnetic lock driving control circuit which is connected with the electromagnetic lock driving signal control module and is used for controlling the on-off of an electromagnetic lock control coil through a relay so as to lock and unlock the gun of the electromagnetic lock, and an energy storage circuit which is connected with the electromagnetic lock driving control circuit and is used for providing a power supply for the automatic unlocking of the electromagnetic lock of the charging gun when power failure or equipment failure occurs; the electromagnetic lock drive control circuit is connected with the charging gun electromagnetic lock, and the electromagnetic lock drive control circuit comprises an electromagnetic lock control sub-circuit which is conducted in the forward direction and the reverse direction through an electromagnetic lock control coil L1 and respectively controls the charging gun locking gun and unlocking, and when power failure or equipment failure occurs, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be conducted in the automatic reverse direction through a power supply provided by an energy storage circuit to automatically unlock the charging gun electromagnetic lock.

2. The electric vehicle charging gun electromagnetic lock control device according to claim 1, characterized in that: the energy storage circuit comprises a first energy storage capacitor C1 used for providing enough electric energy for driving the electromagnetic lock coil, and a second energy storage capacitor C2 used for reversely supplying power to the electromagnetic lock coil when a fault or power failure occurs, wherein the first energy storage capacitor C1 is connected with a charging power supply, and the second energy storage capacitor C2 is connected with the reverse end of the electromagnetic lock control coil L1.

3. The electric vehicle charging gun electromagnetic lock control device according to claim 1, characterized in that: the energy storage circuit also comprises a current limiting resistor R1 which is used for charging the energy storage capacitor and avoiding the electromagnetic lock device from being damaged due to the fact that a large current is supplied to the winding of the electromagnetic lock control coil L1 for a long time when a single component fails;

the first energy storage capacitor C1 is connected with the charging power supply through a current limiting resistor R1.

4. The control device of the electromagnetic lock of the electric vehicle charging gun according to claim 2, characterized in that: the electromagnetic lock control sub-circuit comprises a control relay RL1, a contact RL1B of the control relay RL1 is connected with the forward end of an electromagnetic lock control coil L1, an electromagnetic lock driving signal control module is connected with a coil RL1A of the control relay RL1, and the electromagnetic lock driving signal control module is used for outputting a driving signal of a coil RL1A of a control relay RL 1.

5. The control device of the electromagnetic lock of the electric vehicle charging gun according to claim 4, characterized in that:

the electromagnetic lock driving signal control module comprises a signal input end and a triode Q1, wherein the signal input end is connected with the base electrode of a triode Q1, and the collector electrode of the triode Q1 is connected with a coil RL1A of the control relay RL 1.

6. The electric vehicle charging gun electromagnetic lock control device according to claim 1, characterized in that: and the electromagnetic lock control coil L1 is also connected in parallel with an absorption diode which is used for absorbing voltage spikes generated at two ends of the coil when the electromagnetic lock coil is controlled to be switched on and off and protecting components.

7. A control method applied to the electromagnetic lock control device of the electric vehicle charging gun according to claim 1, characterized in that: the electromagnetic lock control sub-circuit comprises a control relay RL1, a contact RL1B of the control relay RL1 is connected with the forward end of an electromagnetic lock control coil L1, an electromagnetic lock driving signal control module is connected with a coil RL1A of the control relay RL1, the electromagnetic lock driving signal control module is used for outputting a driving signal of a coil RL1A of a control relay RL1, the energy storage circuit comprises a first energy storage capacitor C1 used for providing enough electric energy for driving the electromagnetic lock coil, a second energy storage capacitor C2 used for supplying power to the electromagnetic lock coil in a reverse direction when a fault or power failure occurs, and a current limiting resistor R1 used for charging the energy storage capacitor and avoiding the phenomenon that a large current is generated to supply power to an electromagnetic lock control coil L1 winding for a long time when an element is in a fault so as to cause damage to an electromagnetic lock device, and the first energy storage capacitor C1 is connected with a charging power supply through a current limiting resistor R1, the second energy storage capacitor C2 is connected with the reverse end of the electromagnetic lock control coil L1;

the control method comprises the following steps: the electromagnetic lock driving signal control module controls a coil RL1A of a control relay RL1 to be conducted, a coil RL1A controls a contact RL1B of a control relay RL1 to be conducted from a normally closed contact to a normally open contact, a first energy storage capacitor C1 supplies power to an electromagnetic lock control coil L1, the electromagnetic lock control coil L1 is in positive and negative conduction, a gun is charged through an electromagnetic lock, and the electromagnetic lock control coil L1 is conducted to control a second energy storage capacitor C2 to be charged;

the electromagnetic lock driving signal control module controls a coil RL1A of a control relay RL1 to be powered off, a contact RL1B of a control relay RL1 is switched from a normally open contact to a normally closed contact to be conducted, the electromagnetic lock control sub-circuit controls an electromagnetic lock control coil L1 to be conducted reversely through a power supply provided by the second energy storage capacitor C2, and the charging gun electromagnetic lock is unlocked.

8. The control method of the electromagnetic lock control device of the electric vehicle charging gun according to claim 7, characterized in that: the control method further comprises the following steps:

when power failure or equipment failure power failure occurs, the contact RL1B of the control relay RL1 is automatically switched to a normally closed contact conducting state, and the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be automatically conducted in the reverse direction through the power supply provided by the second energy storage capacitor C2 so as to automatically unlock the charging gun electromagnetic lock.

9. The control method for the electromagnetic lock control device of the charging gun of the electric automobile according to claim 7 or 8, characterized in that after the electromagnetic lock of the charging gun is unlocked, the energy storage capacitor C2 is discharged to 0V through a discharging process.

10. The control method of the electromagnetic lock control device of the charging gun of the electric automobile according to claim 7 or 8, characterized in that a current limiting resistor R1 is further provided for limiting current and electric quantity and preventing damage to the electromagnetic lock of the charging gun and potential safety hazard of short circuit of a power supply when a single device is damaged in the driving circuit of the electromagnetic lock, after the gun is locked by the electromagnetic lock of the charging gun, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be continuously conducted through the current limiting resistor R1 to continue charging the second energy storage capacitor C2, and the charging is automatically stopped until the charging is fully performed.

Technical Field

The invention relates to the technical field of electric automobile charging, in particular to an electromagnetic lock control device and method for an electric automobile charging gun

Background

The existing charging gun electromagnetic lock has the following problems and disadvantages in the actual use process: in the existing charging gun electromagnetic locking device, a singlechip is used for generating two paths of pulse type driving waveforms to respectively control a gun locking device and a unlocking device of an electromagnetic lock; the damage of the single device of electromagnetic lock drive circuit may cause the long-time heavy current power supply of rifle electromagnetic lock that charges, thereby cause the damage of coil temperature rising cause the electromagnetic lock to and cause the power supply short circuit and arouse the potential safety hazard, the electromagnetic lock is in-service use, because reasons such as power failure or equipment trouble cause the outage, the electromagnetic lock still keeps the locking state, must start emergent unlocking device by people's direct operation.

The electromagnetic lock device is urgently needed to be controlled only by adopting one-way high-low level driving, the damage of any single device in the electromagnetic lock cannot lead to the long-time electrification of the electromagnetic lock, so that the damage or power short circuit of the electromagnetic lock caused by the long-time electrification is avoided, the potential safety hazard is avoided, the reliability is high, the electromagnetic lock can be controlled to automatically unlock under the condition of power failure or equipment failure, the manual direct operation unlocking is avoided, and the electromagnetic lock control device and the control method of the electric automobile charging gun can avoid the frequent action of the electromagnetic lock to cause the insufficient energy storage capacity in the charging occasion of the charging pile.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an electromagnetic lock control device of an electric automobile charging gun, which only adopts one path of high-low level drive to control an electromagnetic lock device, and the damage of any single device in the electromagnetic lock can not lead to the long-time electrification of the electromagnetic lock, so that the damage of the electromagnetic lock or the power supply short circuit caused by the long-time electrification is avoided, the potential safety hazard is avoided, the reliability is high, the electromagnetic lock can be controlled to be automatically unlocked under the condition of power failure or equipment fault, the manual direct operation unlocking is avoided, and the insufficient energy storage of an energy storage capacitor caused by the frequent action of the electromagnetic lock can be avoided in the charging occasion of a charging pile.

In order to solve the technical problems, the invention provides an electromagnetic lock control device of a charging gun of an electric automobile, which comprises an electromagnetic lock driving signal control module, an electromagnetic lock driving control circuit and an energy storage circuit, wherein the electromagnetic lock driving signal control module controls an electromagnetic lock through a single phase control signal; the electromagnetic lock drive control circuit is connected with the charging gun electromagnetic lock, and the electromagnetic lock drive control circuit comprises an electromagnetic lock control sub-circuit which is conducted in the forward direction and the reverse direction through an electromagnetic lock control coil L1 and respectively controls the charging gun locking gun and unlocking, and when power failure or equipment failure occurs, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be conducted in the automatic reverse direction through a power supply provided by an energy storage circuit to automatically unlock the charging gun electromagnetic lock.

Preferably, the energy storage circuit comprises a first energy storage capacitor C1 for providing enough electric energy for driving the electromagnetic lock coil, and a second energy storage capacitor C2 for supplying power to the electromagnetic lock coil in a reverse direction when a fault or power failure condition occurs, wherein the first energy storage capacitor C1 is connected with a charging power supply, and the second energy storage capacitor C2 is connected with a reverse end of the electromagnetic lock control coil L1.

Preferably, the energy storage circuit further comprises a current limiting resistor R1, which is used for charging the energy storage capacitor and avoiding the electromagnetic lock device from being damaged due to the fact that a large current is supplied to the winding of the electromagnetic lock control coil L1 for a long time when a single component fails;

the first energy storage capacitor C1 is connected with the charging power supply through a current limiting resistor R1.

Preferably, the electromagnetic lock control sub-circuit comprises a control relay RL1, a contact RL1B of the control relay RL1 is connected with the positive end of the electromagnetic lock control coil L1, the electromagnetic lock driving signal control module is connected with a coil RL1A of the control relay RL1, and the electromagnetic lock driving signal control module is used for outputting a driving signal of a coil RL1A of a control relay RL 1.

Preferably, the electromagnetic lock driving signal control module comprises a signal input end and a triode Q1, wherein the signal input end is connected with the base electrode of a triode Q1, and the collector electrode of the triode Q1 is connected with a coil RL1A of the control relay RL 1.

Preferably, the electromagnetic lock control coil L1 is further connected in parallel with an absorption diode for absorbing a voltage spike generated at two ends of the coil when the electromagnetic lock coil is controlled to be switched on and off and protecting components.

The invention also discloses a control method of the electromagnetic lock control device of the charging gun of the electric automobile, the electromagnetic lock control sub-circuit comprises a control relay RL1, a contact RL1B of the control relay RL1 is connected with the positive end of the electromagnetic lock control coil L1, an electromagnetic lock driving signal control module is connected with a coil RL1A of the control relay RL1, the electromagnetic lock driving signal control module is used for outputting a driving signal of the coil RL1A of the control relay RL1, the energy storage circuit comprises a first energy storage capacitor C1 used for providing enough electric energy for driving the electromagnetic lock coil, a second energy storage capacitor C2 used for reversely supplying power to the electromagnetic lock coil when a fault or power failure occurs, and a current limiting resistor R1 used for charging the energy storage capacitor and avoiding damage to the electromagnetic lock device caused by the fact that a large current supplies power to the winding of the electromagnetic lock control coil L1 for a long time when components fail, the first energy storage capacitor C1 is connected with a charging power supply through a current limiting resistor R1, and the second energy storage capacitor C2 is connected with the reverse end of the electromagnetic lock control coil L1;

the control method comprises the following steps: the electromagnetic lock driving signal control module controls a coil RL1A of a control relay RL1 to be conducted, a coil RL1A controls a contact RL1B of a control relay RL1 to be conducted from a normally closed contact to a normally open contact, a first energy storage capacitor C1 supplies power to an electromagnetic lock control coil L1, the electromagnetic lock control coil L1 is in positive and negative conduction, a gun is charged through an electromagnetic lock, and the electromagnetic lock control coil L1 is conducted to control a second energy storage capacitor C2 to be charged;

the electromagnetic lock driving signal control module controls a coil RL1A of a control relay RL1 to be powered off, a contact RL1B of a control relay RL1 is switched from a normally open contact to a normally closed contact to be conducted, the electromagnetic lock control sub-circuit controls an electromagnetic lock control coil L1 to be conducted reversely through a power supply provided by the second energy storage capacitor C2, and the charging gun electromagnetic lock is unlocked.

When power failure or equipment failure power failure occurs, the contact RL1B of the control relay RL1 is automatically switched to a normally closed contact conducting state, and the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be automatically conducted in the reverse direction through the power supply provided by the second energy storage capacitor C2 so as to automatically unlock the charging gun electromagnetic lock.

After the electromagnetic lock of the charging gun is unlocked, the energy storage capacitor C2 is discharged to 0V through the discharging process.

After the electromagnetic lock of the charging gun locks the gun, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be continuously conducted through the current limiting resistor R1 to continuously charge the second energy storage capacitor C2 until the charging is automatically stopped when the charging gun is fully charged.

After the control device and the control method are adopted, the electromagnetic lock control device of the charging gun of the electric automobile comprises an electromagnetic lock driving signal control module for controlling an electromagnetic lock through a single-phase control signal, an electromagnetic lock driving control circuit which is connected with the electromagnetic lock driving signal control module and is used for controlling the on-off of an electromagnetic lock control coil through a relay so as to lock the gun and unlock the gun of the electromagnetic lock, and an energy storage circuit which is connected with the electromagnetic lock driving control circuit and is used for providing a power supply for automatically unlocking the electromagnetic lock of the charging gun when power failure or equipment failure occurs; the electromagnetic lock driving control circuit is connected with the electromagnetic lock of the charging gun, the electromagnetic lock driving control circuit comprises an electromagnetic lock control sub-circuit which respectively controls the gun locking and unlocking of the charging gun through the forward and reverse conduction of an electromagnetic lock control coil L1, when power failure or equipment failure occurs, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to automatically and reversely conduct to automatically unlock the electromagnetic lock of the charging gun through a power supply provided by an energy storage circuit, the energy storage circuit comprises a first energy storage capacitor C1 which is used for providing enough electric energy for driving the electromagnetic lock coil, a second energy storage capacitor C2 which is used for reversely supplying power to the electromagnetic lock coil when failure or power failure occurs, and a current limiting resistor R1 which is used for charging the energy storage capacitor and avoiding the phenomenon that when a single component fails, large current is supplied to the winding of the electromagnetic lock control coil L1 for a long time to cause damage to the electromagnetic lock device, this electric automobile rifle electromagnetic lock control device that charges only adopts the high low level drive of the same kind to control the electromagnetic lock device, the damage of arbitrary single device in the electromagnetic lock can not lead to for the electromagnetic lock circular telegram for a long time, thereby avoid long-time circular telegram and cause the damage or the power short circuit of electromagnetic lock, stop the potential safety hazard, the reliability is high, can control the electromagnetic lock and carry out automatic unblock and avoid needing staff direct operation unblock under outage or the equipment trouble condition, can avoid the frequent action of electromagnetic lock to cause energy storage electric capacity energy storage not enough charging the place at electric pile.

Drawings

FIG. 1 is an overall circuit connection diagram of an electromagnetic lock control device of an electric vehicle charging gun according to the present invention;

FIG. 2 is a circuit diagram of a first control module of an electromagnetic lock driving signal of the electromagnetic lock control device of the electric vehicle charging gun according to the present invention;

fig. 3 is a circuit diagram of the driving control circuit and the energy storage circuit of the electromagnetic lock of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a circuit connection diagram of an electromagnetic lock control device of an electric vehicle charging gun according to the present invention; FIG. 2 is a circuit diagram of a first control module of an electromagnetic lock driving signal of the electromagnetic lock control device of the electric vehicle charging gun according to the present invention; fig. 3 is a circuit diagram of an electromagnetic lock driving control circuit and an energy storage circuit of the present invention, in this embodiment, an electromagnetic lock control device of an electric vehicle charging gun includes an electromagnetic lock driving signal control module 10 for controlling an electromagnetic lock by a single phase control signal, an electromagnetic lock driving control circuit 12 connected to the electromagnetic lock driving signal control module 10 for controlling the on/off of an electromagnetic lock control coil through a relay so as to perform an electromagnetic lock gun and an unlocking operation, and an energy storage circuit 13 connected to the electromagnetic lock driving control circuit and configured to provide a power source for automatically unlocking the electromagnetic lock of the charging gun when a power failure or an equipment failure occurs; the electromagnetic lock drive control circuit 12 is connected with the charging gun electromagnetic lock 14, the electromagnetic lock drive control circuit 12 comprises an electromagnetic lock control sub-circuit which is conducted in the forward direction and the reverse direction through an electromagnetic lock control coil L1 and respectively controls the charging gun locking gun and unlocking, and when power failure or equipment failure occurs, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be conducted in the automatic reverse direction through a power supply provided by the energy storage circuit 13 to automatically unlock the charging gun electromagnetic lock.

In this embodiment, the energy storage circuit 13 includes a first energy storage capacitor C1 for providing sufficient electric energy for driving the electromagnetic lock coil, a second energy storage capacitor C2 for supplying power to the electromagnetic lock coil in a reverse direction when a fault or power failure occurs, and a current limiting resistor R1 for charging the energy storage capacitor and preventing a large current from supplying power to the electromagnetic lock control coil L1 winding for a long time when a single component fails, where the first energy storage capacitor C1 is connected to a charging power supply through a current limiting resistor R1, and the second energy storage capacitor C2 is connected to the reverse end of the electromagnetic lock control coil L1.

In this embodiment, the electromagnetic lock control sub-circuit includes a control relay RL1, the contact RL1B of the control relay RL1 is connected to the forward end of the electromagnetic lock control coil L1, the electromagnetic lock driving signal control module is connected to the coil RL1A of the control relay RL1, and the electromagnetic lock driving signal control module is configured to output a driving signal of the coil RL1A of the forward control relay RL 1.

In this embodiment, the electromagnetic lock driving signal control module 10 includes a signal input terminal connected to the base of the transistor Q1, and a transistor Q1, wherein the collector of the transistor Q1 is connected to the coil RL1A of the control relay RL 1.

In this embodiment, the electromagnetic lock control coil L1 is further connected in parallel with an absorption diode for absorbing a voltage spike generated at two ends of the coil when the electromagnetic lock coil is controlled to be switched on and off and protecting components.

Example two

The embodiment discloses a control method applied to the electromagnetic lock control device of the electric vehicle charging gun in the first embodiment, the electromagnetic lock control sub-circuit comprises a control relay RL1, a contact RL1B of the control relay RL1 is connected with the forward end of an electromagnetic lock control coil L1, an electromagnetic lock driving signal control module 10 is connected with a coil RL1A of the control relay RL1, the electromagnetic lock driving signal control module 10 is used for outputting a driving signal of the coil RL1A of the control relay RL1, the energy storage circuit 13 comprises a first energy storage capacitor C1 used for providing enough electric energy for driving the electromagnetic lock coil, a second energy storage capacitor C2 used for reversely supplying power to the electromagnetic lock coil when a fault or power failure occurs, and a current limiting resistor R1 used for charging the energy storage capacitor and avoiding damage to the electromagnetic lock device due to the fact that a large current supplies power to the electromagnetic lock control coil L1 for a long time when a component fails, the first energy storage capacitor C1 is connected with a charging power supply through a current limiting resistor R1, and the second energy storage capacitor C2 is connected with the reverse end of the electromagnetic lock control coil L1;

the electromagnetic lock driving signal control module 10 controls a coil RL1A of a control relay RL1 to be conducted, a coil RL1A controls a contact RL1B of a control relay RL1 to be conducted from a normally closed contact to a normally open contact, a first energy storage capacitor C1 supplies power to an electromagnetic lock control coil L1, the electromagnetic lock control coil L1 is in positive and negative conduction, a gun is charged through an electromagnetic lock, and the electromagnetic lock control coil L1 is conducted to control a second energy storage capacitor C2 to be charged;

the electromagnetic lock driving signal control module 10 controls the coil RL1A of the control relay RL1 to be powered off, the contact RL1B of the control relay RL1 is switched from the normally open contact to the normally closed contact, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be reversely conducted through the power supply provided by the second energy storage capacitor C2, and the charging gun electromagnetic lock is unlocked.

When power failure or equipment failure power failure occurs, the contact RL1B of the control relay RL1 is automatically switched to a normally closed contact conducting state, and the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to be automatically conducted in the reverse direction through the power supply provided by the second energy storage capacitor C2 so as to automatically unlock the charging gun electromagnetic lock.

After the electromagnetic lock of the charging gun is unlocked, the energy storage capacitor C2 is discharged to 0V through the discharging process.

The utility model also provides a current limiting resistor R1 that is used for limiting electric current and electric quantity and can not cause the damage of the rifle electromagnetic lock that charges and the potential safety hazard of power supply short circuit when the damage of single device appears in the electromagnetic lock drive circuit, behind the rifle is locked to the rifle of rifle electromagnetic lock, electromagnetic lock control sub-circuit passes through current limiting resistor R1 control electromagnetic lock control coil L1 and continues to switch on and charge for second energy storage capacitor C2, and the automatic stop is charged when fully charged.

After the device is adopted, the electromagnetic lock control device of the charging gun of the electric automobile comprises an electromagnetic lock driving signal control module 10 for controlling an electromagnetic lock through a single phase control signal, an electromagnetic lock driving control circuit 12 which is connected with the electromagnetic lock driving signal control module 10 and is used for controlling the on-off of an electromagnetic lock control coil through a relay so as to lock the gun and unlock the gun of the electromagnetic lock, and an energy storage circuit 13 which is connected with the electromagnetic lock driving control circuit 12 and is used for providing power for the automatic unlocking of the electromagnetic lock of the charging gun when power failure or equipment failure occurs; the electromagnetic lock driving control circuit 12 is connected with the charging gun electromagnetic lock 14, the electromagnetic lock driving control circuit 12 comprises an electromagnetic lock control sub-circuit which respectively controls the charging gun locking and unlocking through the forward and reverse conduction of an electromagnetic lock control coil L1, when power failure or equipment failure occurs, the electromagnetic lock control sub-circuit controls the electromagnetic lock control coil L1 to automatically and reversely conduct to automatically unlock the charging gun electromagnetic lock through a power supply provided by an energy storage circuit, the energy storage circuit 13 comprises a first energy storage capacitor C1 which is used for providing enough electric energy for driving the electromagnetic lock coil, a second energy storage capacitor C2 which is used for reversely supplying power to the electromagnetic lock coil when failure or power failure occurs, and a current limiting resistor R1 which is used for charging the energy storage capacitor and avoiding the phenomenon that when a single component fails, large current is supplied to the electromagnetic lock control coil L1 winding for a long time to cause damage to the electromagnetic lock device, this electric automobile rifle electromagnetic lock control device that charges only adopts the high low level drive of the same kind to control the electromagnetic lock device, the damage of arbitrary single device in the electromagnetic lock can not lead to for the electromagnetic lock circular telegram for a long time, thereby avoid long-time circular telegram and cause the damage or the power short circuit of electromagnetic lock, stop the potential safety hazard, the reliability is high, can control the electromagnetic lock and carry out automatic unblock and avoid needing staff direct operation unblock under outage or the equipment trouble condition, can avoid the frequent action of electromagnetic lock to cause energy storage electric capacity energy storage not enough charging the place at electric pile.

It should be understood that the above is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by the present specification and drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.