CN111682602B - Charging control device and control method for storage battery car in tunnel - Google Patents
Charging control device and control method for storage battery car in tunnel Download PDFInfo
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- CN111682602B CN111682602B CN202010410909.XA CN202010410909A CN111682602B CN 111682602 B CN111682602 B CN 111682602B CN 202010410909 A CN202010410909 A CN 202010410909A CN 111682602 B CN111682602 B CN 111682602B
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- 238000000034 method Methods 0.000 title abstract description 15
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a charging control device and a control method for a storage battery car in a tunnel, which are characterized in that the device is connected between a charger and a storage battery, charging current is detected through a Hall controller HET, a LOGO controller judges the connection state, and the working characteristics of a thyristor are combined, so that whether the anode and the cathode of a charging line are reversely connected or not can be automatically judged, and the device automatically disconnects charging under the condition of reversely connecting the anode and the cathode of the charging line, so that the charger and the storage battery are protected; the charging circuit can be automatically disconnected before the charging wire is not inserted into the storage battery, so that the charging wire is ensured to be not electrified; the charging output can be disconnected under the condition of short circuit of the charging line, so that short circuit accidents are prevented; the battery can stop charging automatically after full charge, and overcharge is prevented. Various potential safety hazards in the charging process of the electric locomotive can be effectively avoided, and safe charging in the true sense is realized.
Description
Technical Field
The invention relates to a charging control technology, in particular to a charging control device and a charging control method for a storage battery car in a tunnel.
Background
Electric locomotive in tunnel construction is the necessary equipment that is responsible for horizontal transportation in the tunnel. The device is used for conveying dregs in the tunnel to the ground and conveying objects such as duct pieces, bolts, tracks and the like into the tunnel. The electric locomotive relies on large-scale group battery power supply, and the group battery needs alternate charging, guarantees the power supply of electric locomotive.
In the past construction, the group battery need hoist to ground charging station, relies on three-phase alternating current to pass through after the rectification, utilizes controllable thyristor, 12 pulse trigger circuit to realize the controllability of electric current, and the storage battery charging wire relies on two rubber cable manual grafting of taking the plug to realize the charging to the storage battery on the storage battery stake generally, and after the charging was accomplished, the manual work demolishs the charging wire, realizes whole charging flow.
In the charging process, a charging cable (positive electrode and negative electrode) is connected to the pile head of the positive electrode and the negative electrode of the battery pack manually, then a charger is started to charge, in the process, the situation that the positive electrode and the negative electrode are reversely connected and the serial circuit is connected in error inevitably occurs due to the accountability problem of operators, and accidents such as battery burst and short circuit of the output of the charger are easy to occur under the situation, so that the safety of equipment and personnel is seriously endangered. Meanwhile, if the charger is electrified, the cable (positive and negative) is connected after the charger is started, so that electrification (voltage DC540V and current above about 300A) operation is easy to cause hidden danger to personnel safety of operators. After the charging is completed, the service life of the battery pack is reduced or the battery pack is damaged because the person forgets to turn off the charger to cause overcharge.
Disclosure of Invention
The invention provides a charging control device and a control method for an electric locomotive in a tunnel, aiming at the problem of safe charging of the electric locomotive in tunnel construction, and can effectively avoid various potential safety hazards in the charging process of the electric locomotive and realize safe charging in a real sense.
The technical scheme of the invention is as follows: the device comprises a device input end connected with a charger, a device output end connected with a rechargeable battery pack, a fuse FU, voltage dividing resistors R4 and R5 which are connected in series and connected in parallel at the positive end and the negative end of the device charger, wherein the voltage of a connection point of the voltage dividing resistors R4 and R5 is control voltage Vc, vc is power supply voltage provided for a Hall controller HET and a LOGO controller, and the control voltage Vc and the negative end are connected with a voltage stabilizing diode DW; the positive electrode input end of the device charger is connected with the positive electrode of the device battery pack through a direct current contactor KM normally open switch, and the negative electrode input end of the device charger is connected with the negative electrode end of the device battery pack; the series resistor R2 and the resistor R3 are connected in parallel at the positive end and the negative end of the battery pack of the device, and the connection point of the series resistor R2 and the resistor R3 is connected with the triggering gate of the thyristor KG through the light-emitting diode LED; after being connected in series with a normally open switch of a time relay, a contactor KM coil is connected in parallel with a SJ coil of the time relay, and after being connected in parallel, the contactor is connected in series with a relay switch Q1, a thyristor KG and a resistor R1 controlled by a LOGO controller to form a charging control circuit, and the charging control circuit is connected in parallel at the two ends of the positive electrode and the negative electrode of a battery pack of the device; the Hall element HET detects the charging current of the main loop and outputs a control signal to the LOGO controller, and the LOGO controller outputs the control signal to control the relay switch Q1 to be turned on or turned off.
After the device is connected with the anode and the cathode of a charger, the power supply ends of the Hall controller HET and the LOGO controller are powered on, the LOGO controller sends a low level with a pulse width of two seconds, the output of the LOGO controller controls the closing of a relay Q1 after two seconds, and the forward voltage loop of the thyristor is closed; the time relay SJ coil is powered on, the time relay SJ delay switch is closed after 3 seconds, the contactor KM coil is powered on, the contactor KM normally open switch is closed, the charging main loop is connected, and the system starts to charge;
when the Hall controller HET detects that the charging current is smaller than a cut-off threshold value, the HET sends an instruction to the LOGO controller, the LOGO controller sends a low-level pulse, a relay switch Q1 controlled by the LOGO controller is disconnected, a thyristor forward voltage loop is disconnected, a contactor KM coil is in power failure, a contactor KM normally open switch is disconnected, a charging main loop is disconnected, the device is connected with a charger and a battery pack normally, the LOGO controller re-controls the relay switch Q1 to be closed again 3 seconds after the charging main loop is disconnected, the contactor KM gets power, the continuous charging is restarted, whether the charging current is smaller than the cut-off threshold value is detected again, 3 times of counting is set in the LOGO controller, after the continuous 3 times of charging power-off cycles, if the charging current is detected to be smaller than the cut-off threshold value in time for 3 times, the LOGO controller sends a long-time closing instruction, and the contactor KM is disconnected, and charging is completed; when the device is abnormally connected with the charger, the power end of the LOGO controller is unpowered, the relay Q1 controlled by the LOGO controller is in a disconnection state, the charging control circuit is in a disconnection state, and no charging current exists;
when the device is abnormally connected with the battery pack, the thyristor KG trigger gate has no normal trigger voltage, the thyristor KG does not work, the charging control circuit is in a disconnected state, and no charging current exists.
The invention has the beneficial effects that: the invention is used for charging the battery pack of a horizontal transport tool-large traction locomotive in tunnel construction, and is suitable for charging matched with most chargers in the market by changing relevant selection parameters of components in a circuit, thereby realizing safe charging.
Drawings
FIG. 1 is a schematic circuit diagram of a charging control device for an in-tunnel battery car according to the present invention;
FIG. 2 is a schematic diagram of a normal charging process according to the present invention;
FIG. 3 is a schematic flow chart of the invention for disconnecting the charging circuit after the normal electric quantity is full;
FIG. 4 is a schematic diagram of LOGO controller commands during an abnormal condition during a charging process according to the present invention;
FIG. 5 is a schematic diagram of a circuit polarity determination process according to the present invention;
FIG. 6 is a schematic diagram of a LOGO controller control flow.
Detailed Description
The device is added between the charger and the battery pack, and is used for a broken line frame part in a circuit schematic diagram of the charge control device of the battery car in the tunnel as shown in fig. 1. The fuse FU, the divider resistor R4 and the divider resistor R5 which are connected in series are connected in parallel at the positive end and the negative end of the charger, the voltage of the connection point of the divider resistor R4 and the divider resistor R5 is control voltage Vc, vc provides power supply voltage for the Hall controller HET and the controller Siemens LOGO, and the control voltage Vc and the negative end are connected with the voltage stabilizing diode DW. The positive input end of the device charger is connected with the positive electrode of the device battery pack through a normally open switch of the direct current contactor KM, and the negative input end of the device charger is connected with the negative end of the device battery pack. The series resistor R2 and the resistor R3 are connected in parallel at the positive end and the negative end of the battery pack of the device, and the connection point of the series resistor R2 and the resistor R3 is connected with the triggering gate of the thyristor KG through the light-emitting diode LED; after being connected in series with a normally open switch of a time relay, a contactor KM coil is connected in parallel with a SJ coil of the time relay, and after being connected in parallel, the contactor is connected in series with a relay switch Q1 controlled by LOGO, a thyristor KG and a resistor R1 to form a charging control circuit, and the charging control circuit is connected in parallel at the two ends of the positive electrode and the negative electrode of a battery pack of the device. The Hall element HET detects the charging current of the main loop, sends a control signal to the LOGO controller, and sends the control signal to control the relay switch Q1 to be switched on or off after logic operation, so as to control whether the charging control circuit is switched on or off, and the characteristics that the thyristor is switched on only after meeting the forward voltage and the trigger signal are combined, so that the contactor KM coil is controlled to be powered on and off, and finally the normally open switch of the DC contactor KM is switched on or off to control the charging state. The working principle of the device is described below according to the flow classification.
The device is connected with the anode and the cathode of the charger, at the moment, the charger is not electrified, the device does not control the supply of power voltage (Vc), the Hall controller HET and the LOGO controller are in an unoperated state, the anode and cathode power of the battery pack is connected, the thyristor KG has no forward voltage and only has a trigger signal, so the thyristor KG is in an unoperated state, the time relay SJ and the KM coil of the contactor are not electrified, and the main circuit between the charger and the battery pack is in an off state.
After the charger is powered on, the charger outputs rated voltage, the power ends of the Hall controller HET and the LOGO controller are powered on, the HET detects that charging current is zero, a control instruction is sent, the LOGO controller sends a low level with a pulse width of two seconds, the LOGO controller outputs a control relay Q1 to be closed after two seconds, a thyristor forward voltage loop is closed, the thyristor gate electrode detects that a battery pack is connected, the thyristor trigger loop is conducted, the thyristor works, a time relay SJ coil is powered on, a time relay SJ delay switch is closed after 3 seconds, a contactor KM coil is powered on, a contactor KM normally open switch is closed, a charging main loop is connected, and the system starts to charge. Fig. 2 is a normal charging flow.
When the charging is finished, the Hall controller HET detects that the current is reduced and is smaller than a threshold value (the threshold value can be set), the HET sends an instruction to the LOGO controller, the LOGO controller sends a low-level pulse, a relay switch Q1 controlled by LOGO is disconnected, a thyristor forward voltage loop is disconnected, a contactor KM coil loses electricity, a normally open switch of the contactor KM is disconnected, a charging main loop is disconnected, but because a charger is still working, a battery pack circuit is not disconnected, the whole control system is working, the LOGO controller again controls the relay switch Q1 to be closed after the main loop is disconnected for 3 seconds, the contactor KM is powered on again, the continuous charging is tried again, whether the charging current is smaller than the threshold value is detected again, 3 times of counting are set in the LOGO controller, after 3 times of continuous charging power-off cycles, for example, the charging current is smaller than the threshold value is detected in 3 times, the LOGO controller sends a long-time closing instruction, the contactor KM is disconnected, and the charging is completed. Fig. 3 is a flow chart at the time of completion of charging.
Abnormal working conditions:
in the first case, the charging line is reversely connected, the battery pack is damaged, the battery pack is short-circuited, and the like. After the charging wire is inserted, the forward bias battery voltage cannot be detected by the trigger gate of the thyristor, the thyristor is not conducted, the time relay SJ cannot be opened, the trigger diode of the contactor KM cannot emit light, and the charging cannot be normally performed.
In the second case, a charging line short circuit condition occurs. After the charger is started, at the moment, the thyristor trigger gate electrode can not detect the forward bias battery voltage, the thyristor is not conducted, the time relay SJ can not be opened, the contactor KM trigger diode can not emit light, the charging wire anode and cathode have no current output, and the short circuit phenomenon can not be caused.
In the third condition, the battery pack is not connected, the charger is started first and then is connected with the charging wire, at the moment, the thyristor trigger gate electrode can not detect the forward bias battery voltage, the thyristor is not conducted, the time relay SJ and the contactor KM trigger diode can not be opened, the charging wire anode and cathode do not emit light, the charging wire anode and cathode do not have current output, the charging wire does not have voltage, the personal safety of operators is guaranteed (compared with the battery voltage, the charging voltage is easier to form a loop in a human body and generates electric shock accidents), and the charging is started until the time delay is 5 seconds after the battery pack is inserted.
In the fourth case, during the charging process, the operator is unauthorised to pull the charging wire off, and the charging circuit is disconnected. At this time, the hall controller HET cannot detect current data, the current is zero, the HET sends a switching signal to the siemens LOGO controller, the LOGO controller sends a pulse signal to disconnect the thyristor main loop, so that the contactor KM is disconnected, the charging main loop is disconnected, the charging is stopped, no voltage is generated on the charging line at this time, and the personal safety of operators is ensured (compared with the voltage of a battery, the charging voltage is easier to form a loop in a human body, and an electric shock accident is generated). See fig. 4. The LOGO controller receives the switching value signal I from the Hall controller HET and outputs a pulse off signal Q.
The control decision flow of the present apparatus/method is shown in fig. 5. After the battery pack is plugged into the charging wire and the charger is electrified, the system starts to judge the polarity of the charging wire. Under the positive connection condition, the charging current is normally output after 5 seconds, and after the battery is full, the charging main circuit is automatically switched on/off for 3 cycles, and the charging is automatically stopped. In the reverse connection case, the charging current is not output. In the case of a short circuit of the charging line, the charging current is not output.
LOGO controller theory of operation: the core of the invention is a thyristor and LOGO controller, and the logic workflow of the LOGO controller is described in detail below. See fig. 6. Wherein, I1 is the switching value signal that hall controller HET sent and transmits to pulse relay module B001 and count relay B003 respectively. The pulse relay B001 sends a pulse to the OR gate module B005, and the Q1 sends a pulse command to control the thyristor loop. When the I1 continuously sends out the switching value signal for 3 times, the counting relay counts up, sends out the switching value signal to the OR gate module B005, and Q1 sends out a disconnection instruction to disconnect the thyristor loop, and does not perform the circulating operation any more until the charger is powered off and restarted, and the counting returns to zero.
The invention utilizes the triggering principle of the thyristor to automatically detect the polarity of the battery pack, and automatically delay charging under normal conditions and not charging under reverse conditions; the polarity of the battery pack is automatically detected by utilizing the triggering principle of the thyristor, and the battery pack is automatically charged in a delayed manner under the normal condition, and is not charged under the condition of short circuit of a charging wire; the polarity of the battery pack is automatically detected by utilizing the triggering principle of the thyristor, and the battery pack is automatically delayed to be charged under normal conditions and is not charged under the condition of damage; the Hall controller is combined with the Siemens LOGO controller, and a control program is programmed by setting a threshold value, so that when the battery pack is not connected, the charger is started up firstly, then a charging wire is connected, a charging loop is automatically disconnected, personal safety of operators is ensured (compared with the battery voltage, the charging voltage is easier to form a loop in a human body to generate electric shock accidents), and charging is started until the battery pack is inserted and then the time delay is 5 seconds; the Hall controller is combined with the Siemens LOGO controller, and a control program is programmed by setting a threshold value, so that the charging loop can be automatically disconnected under the condition that a charging line is pulled off without permission in the charging process, and the personal safety of operators is ensured (compared with the battery voltage, the charging voltage is easier to form a loop in a human body, and electric shock accidents are generated);
the invention utilizes the Hall controller to combine with the Siemens LOGO controller, and establishes a control program by setting a threshold value, so that the charging loop is automatically judged and closed after the charging is finished, and the overcharge is prevented.
Claims (1)
1. The device is characterized in that a fuse FU and voltage dividing resistors R4 and R5 which are connected in series are connected in parallel at the positive end and the negative end of the device charger, the voltage at the connection point of the voltage dividing resistors R4 and R5 is control voltage Vc, vc is the power supply voltage provided by a Hall controller HET and a LOGO controller, and the control voltage Vc and the negative end are connected with a voltage stabilizing diode DW; the positive electrode input end of the device charger is connected with the positive electrode of the device battery pack through a direct current contactor KM normally open switch, and the negative electrode input end of the device charger is connected with the negative electrode end of the device battery pack; the series resistor R2 and the resistor R3 are connected in parallel at the positive end and the negative end of the battery pack of the device, and the connection point of the series resistor R2 and the resistor R3 is connected with the triggering gate of the thyristor KG through the light-emitting diode LED; after being connected in series with a normally open switch of a time relay, a contactor KM coil is connected in parallel with a SJ coil of the time relay, and after being connected in parallel, the contactor is connected in series with a relay switch Q1, a thyristor KG and a resistor R1 controlled by a LOGO controller to form a charging control circuit, and the charging control circuit is connected in parallel at the two ends of the positive electrode and the negative electrode of a battery pack of the device; the Hall element HET detects the charging current of the main loop and outputs a control signal to the LOGO controller, and the LOGO controller outputs the control signal to control the relay switch Q1 to be switched on or switched off;
after the device is connected with the anode and the cathode of a charger, the power supply ends of the Hall controller HET and the LOGO controller are powered on, the LOGO controller sends a low level with a pulse width of two seconds, the output of the LOGO controller controls the closing of a relay Q1 after two seconds, and the forward voltage loop of the thyristor is closed; the time relay SJ coil is powered on, the time relay SJ delay switch is closed after 3 seconds, the contactor KM coil is powered on, the contactor KM normally open switch is closed, the charging main loop is connected, and the system starts to charge;
when the Hall controller HET detects that the charging current is smaller than a cut-off threshold value, the HET sends an instruction to the LOGO controller, the LOGO controller sends a low-level pulse, a relay switch Q1 controlled by the LOGO controller is disconnected, a thyristor forward voltage loop is disconnected, a contactor KM coil is in power failure, a contactor KM normally open switch is disconnected, a charging main loop is disconnected, the device is connected with a charger and a battery pack normally, the LOGO controller re-controls the relay switch Q1 to be closed again 3 seconds after the charging main loop is disconnected, the contactor KM gets power, the continuous charging is restarted, whether the charging current is smaller than the cut-off threshold value is detected again, 3 times of counting is set in the LOGO controller, after the continuous 3 times of charging power-off cycles, if the charging current is detected to be smaller than the cut-off threshold value in time for 3 times, the LOGO controller sends a long-time closing instruction, and the contactor KM is disconnected, and charging is completed; when the device is abnormally connected with the charger, the power end of the LOGO controller is unpowered, the relay Q1 controlled by the LOGO controller is in a disconnection state, the charging control circuit is in a disconnection state, and no charging current exists;
when the device is abnormally connected with the battery pack, the thyristor KG trigger gate has no normal trigger voltage, the thyristor KG does not work, the charging control circuit is in a disconnected state, and no charging current exists.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010410909.XA CN111682602B (en) | 2020-05-15 | 2020-05-15 | Charging control device and control method for storage battery car in tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010410909.XA CN111682602B (en) | 2020-05-15 | 2020-05-15 | Charging control device and control method for storage battery car in tunnel |
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| CN111682602A CN111682602A (en) | 2020-09-18 |
| CN111682602B true CN111682602B (en) | 2024-01-30 |
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| CN113488710B (en) * | 2021-06-24 | 2022-10-21 | 中车南京浦镇车辆有限公司 | Self-locking control circuit for preventing over-discharge of storage battery of metro vehicle |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486559A (en) * | 1974-11-25 | 1977-09-21 | Sevcon Ltd | Pulse control circuits |
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| CN204732912U (en) * | 2015-06-01 | 2015-10-28 | 金川集团股份有限公司 | A kind of battery vehicle is parked automatic charging system |
| CN205319756U (en) * | 2016-01-19 | 2016-06-15 | 江门市甜的电器有限公司 | Fill electric pile control circuit |
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2020
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| GB1486559A (en) * | 1974-11-25 | 1977-09-21 | Sevcon Ltd | Pulse control circuits |
| JPH05176466A (en) * | 1991-12-26 | 1993-07-13 | Nec Corp | Charger circuit for radio telephone |
| CN2235672Y (en) * | 1994-05-28 | 1996-09-18 | 李福生 | Synchronous phase-shift controllable rectifying charging arrangement |
| CN2289347Y (en) * | 1997-03-14 | 1998-08-26 | 马修真 | Auxiliary starting device for DC motor |
| CN200947577Y (en) * | 2006-07-07 | 2007-09-12 | 李文舟 | Adjustable constant current voltage-stabilized power supply |
| CN201315498Y (en) * | 2008-11-10 | 2009-09-23 | 康之歆 | Automatic charger stopping module with starting button |
| RU2382900C1 (en) * | 2009-02-13 | 2010-02-27 | Федеральное государственное образовательное учреждение высшего профессионального образования "Челябинский государственный агроинженерный университет" | System for autonomous power supply of loads |
| CN102832664A (en) * | 2012-08-17 | 2012-12-19 | 广州市君盘实业有限公司 | Variable frequency charger |
| CN204118786U (en) * | 2014-08-22 | 2015-01-21 | 陈晓佳 | Storage battery charge protection device |
| CN104410139A (en) * | 2014-12-25 | 2015-03-11 | 江苏理工学院 | Automatic power-off circuit and automatic power-off device for full storage battery of storage battery car |
| CN104836312A (en) * | 2015-05-20 | 2015-08-12 | 郭喜明 | Anti-theft electric vehicle charger capable of alarming |
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| CN205319756U (en) * | 2016-01-19 | 2016-06-15 | 江门市甜的电器有限公司 | Fill electric pile control circuit |
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|---|---|
| CN111682602A (en) | 2020-09-18 |
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