CN111682602A - Charging control device and method for storage battery car in tunnel - Google Patents
Charging control device and method for storage battery car in tunnel Download PDFInfo
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- CN111682602A CN111682602A CN202010410909.XA CN202010410909A CN111682602A CN 111682602 A CN111682602 A CN 111682602A CN 202010410909 A CN202010410909 A CN 202010410909A CN 111682602 A CN111682602 A CN 111682602A
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- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000003137 locomotive effect Effects 0.000 abstract description 8
- 230000007935 neutral effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
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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
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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
- H02J7/00302—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
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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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- 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
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- 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
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- 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
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- 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 charging control method for a storage battery car in a tunnel.A device is connected between a charger and a storage battery, a Hall controller HET is used for detecting charging current, a LOGO controller judges the connection state, and the device can automatically judge whether the positive electrode and the negative electrode of a charging wire are reversely connected or not by combining the working characteristics of a thyristor, and automatically disconnect the charging under the condition of reverse connection so as to protect the charger and the storage battery; the charging circuit can be automatically disconnected before the charging wire is not plugged into the battery jar, so that the neutral plug wire is ensured; the charging output can be disconnected under the condition that the charging wire is short-circuited, so that short-circuit accidents are prevented; the battery can automatically stop charging after being fully charged, and overcharge is prevented. Various potential safety hazards appearing in the charging process of the electric locomotive can be effectively avoided, and the 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 battery car in a tunnel.
Background
An electric locomotive in tunnel construction is necessary equipment for horizontal transportation in a tunnel. It is responsible for conveying the dregs in the tunnel to the ground and conveying the pipe pieces, bolts, rails and other objects into the tunnel. The electric locomotive relies on large-scale group battery power supply, and the group battery needs to alternate and charge, guarantees the power supply of electric locomotive.
In the construction in the past, the group battery needs handling to ground charging station, relies on the three-phase to exchange after through 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 cables of taking the plug to connect the manual work to insert on the storage battery stake usually and realizes charging to the storage battery, and the back is accomplished in charging, and the manual work is demolishd the charging wire, realizes whole charging flow.
In the charging process, charging cables (positive and negative electrodes) need to be manually connected to positive and negative electrode pile heads of a battery pack, then a charger is started to charge, in the process, the situation that the positive and negative electrodes are connected reversely and a series circuit is connected in a wrong way inevitably occurs due to the responsibility problem of operators, and accidents such as explosion of a storage battery, output short circuit of the charger and the like easily occur under the situation, so that the safety of equipment and personnel is seriously harmed. Meanwhile, if the charger is powered on, the connection of cables (positive and negative electrodes) is performed after the charger is started, so that the operation of electrification (voltage DC540V and current about above 300A) is easily caused, and the personal safety of operators is hidden danger. After charging is completed, overcharging is caused because a person forgets to turn off the charger, reducing the service life of the battery pack or damaging the battery pack.
Disclosure of Invention
The invention provides a charging control device and a charging control method for an electric locomotive in a tunnel, which aim at the problem of charging safety of the electric locomotive in tunnel construction, 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: a charging control device for a storage battery car in a tunnel is characterized in that the input end of the device is connected with a charger, the output end of the device is connected with a charging battery pack, a fuse FU, a divider resistor R4 and a divider resistor R5 which are connected in series are connected in parallel at the positive and negative ends of the charger of the device, the voltage of a connection point of the divider resistors R4 and R5 is control voltage Vc, the Vc provides power supply voltage for Hall controllers HET and LOGO controllers, and the control voltage Vc and the negative end are connected with a 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 direct current contactor KM normally open switch, and the negative input end of the device charger is connected with the negative end of the device battery pack; the resistor R2 and the resistor R3 which are connected in series are connected in parallel at the positive and negative ends of the battery pack of the device, and the connection point of the resistor R2 and the resistor R3 which are connected in series is connected with the trigger 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 an SJ coil of the time relay, and after being connected in parallel, the contactor KM coil 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, wherein 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; hall element HET detects the main loop charging current and output control signal to LOGO controller, and LOGO controller output control signal control relay switch Q1 switches on or off.
After the device is connected with the positive electrode and the negative electrode of a charger, the power ends of a Hall controller HET and a LOGO controller are electrified, the LOGO controller sends out a low level with the pulse width of two seconds, the output of the LOGO controller after two seconds controls the relay Q1 to be closed, and a forward voltage loop of a thyristor is closed; a time relay SJ coil is electrified, a time relay SJ delay switch is closed after 3 seconds, a contactor KM coil is electrified, a contactor KM normally-open switch is closed, a 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 de-energized, a contactor KM normally-open switch is disconnected, a charging main loop is disconnected, and under the condition that the device is normally connected with a charger and a battery pack, the LOGO controller controls the relay switch Q1 to be closed again 3 seconds after the charging main loop is disconnected, the contactor KM is electrified, the charging is started again to try to continue charging again, whether the charging current is smaller than a cut-off threshold value is detected again, 3 times of counting is set in the LOGO controller, after 3 times of charging power-off cycles are continuously carried out, if the charging current is detected to be smaller than a cut-off threshold value within 3 times, the LOGO controller sends a long-time closing instruction, the contactor KM is disconnected, and charging is completed; when the device is abnormally connected with the charger, the power supply end of the LOGO controller is not electrified, the relay Q1 controlled by the LOGO controller is in a disconnected state, the charging control circuit is in a disconnected state, and no charging current exists;
when the device is abnormally connected with the battery pack, the thyristor KG triggers the gate without 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 relates to a charging control device and a charging control method for a battery car in a tunnel, which are used for charging a battery pack of a horizontal transport tool in tunnel construction, namely a large-scale traction locomotive, and are suitable for being matched with most chargers on the market to realize safe charging by changing relevant type selection parameters of components in a circuit.
Drawings
FIG. 1 is a schematic circuit diagram of a charging control device for a battery car in a tunnel according to the present invention;
FIG. 2 is a schematic view of a normal charging process of the present invention;
FIG. 3 is a schematic flow chart illustrating the process of disconnecting the charging circuit after the normal charge level is full;
FIG. 4 is a schematic view of LOGO controller instructions under abnormal conditions during charging in accordance with 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 the LOGO controller control flow of the present invention.
Detailed Description
The device is added between a charger and a battery pack, and is used for a dashed-line frame part in a circuit schematic diagram of a charging control device of a battery car in a tunnel as shown in figure 1. The fuse FU, the divider resistors R4 and R5 which are connected in series are connected in parallel at the positive and negative ends of the charger, the voltage of the connection point of the divider resistors R4 and R5 is control voltage Vc, the 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 a 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 direct current contactor KM normally open switch, and the negative input end of the device charger is connected with the negative end of the device battery pack. The resistor R2 and the resistor R3 which are connected in series are connected in parallel at the positive and negative ends of the battery pack of the device, and the connection point of the resistor R2 and the resistor R3 which are connected in series is connected with the trigger gate of the thyristor KG through the light-emitting diode LED; after the contactor KM coil and the time relay normally-open switch are connected in series, the contactor KM coil and the time relay normally-open switch are connected in parallel with a time relay SJ coil, and after the contactor KM coil and the time relay normally-open switch are connected in parallel, the contactor KM coil and the time relay SJ coil are connected in series with a relay switch Q1, a thyristor KG and a resistor R1 which are controlled by LOGO to. Main loop charging current is detected by hall element HET, send control signal and give the LOGO controller, the LOGO controller sends control signal control relay switch Q1 after through logical operation and switches on or break off to whether control charging control circuit switches on or cuts off, the characteristics that the thyristor need satisfy forward voltage and trigger signal just switch on are reunited, reach control contactor KM coil and get electric and lose power, direct current contactor KM normally open switch is closed or breaks off at last and controls the charged state. The working principle of the method is described below according to the process classification.
The device connects positive and negative poles of the charger, at this moment, because the charger is not electrified, the device does not control the supply of the mains voltage (Vc), the Hall controller HET and the LOGO controller are in a non-working state, the positive and negative pole power supplies of the battery pack are connected, the thyristor KG has no forward voltage and only has a trigger signal, so the thyristor KG is in a non-working state, the time relay SJ and the coil of the contactor KM are not electrified, and a main loop between the charger and the battery pack is in a disconnected state.
After the charger switched on, the charger output rated voltage, hall controller HET and LOGO controller power end are electrified, HET detects that charging current is zero, send control command, LOGO controller sends a pulse width is two seconds low level, LOGO controller output control relay Q1 is closed after two seconds, the forward voltage loop of thyristor is closed, it has connected to detect the group battery through the gate pole, thyristor trigger loop switches on, the thyristor works, time relay SJ coil is electrified, time relay SJ delay switch is closed after 3 seconds, contactor KM coil is electrified, contactor KM normally open switch is closed, the main circuit that charges switches on, the system begins to charge. Fig. 2 shows a normal charging process.
When the charging is finished, the Hall controller HET detects that the current is reduced and is smaller than a cut-off threshold value (the threshold value can be set), the HET sends a command to the LOGO controller, the LOGO controller sends a low-level pulse, a relay switch Q1 controlled by the LOGO is switched off, a forward voltage loop of a thyristor is switched off, a coil of a contactor KM is de-energized, a normally-open switch of the contactor KM is switched off, a main charging loop is switched off, but because a charger works and a battery pack circuit is not switched off, the whole control system works, the LOGO controller controls the relay switch Q1 to be switched on again 3 seconds after the main loop is switched off, the contactor KM is energized again, the charging is tried again to continue to be charged, whether the charging current is smaller than the cut-off threshold value or not is detected again, 3 times of counting is set in the LOGO controller, and after 3 times of continuous charging and power-off cycles, the charging current is detected, and the LOGO controller sends a long-time closing instruction, and the contactor KM is disconnected to finish charging. Fig. 3 is a flow when charging is completed.
Abnormal working conditions:
in the first case, the charging wire is reversely connected, the battery pack is damaged, the battery pack is short-circuited, and the like. After the charging wire is plugged, the thyristor trigger gate pole cannot detect the forward bias battery voltage, the thyristor is not conducted, the time relay SJ and the contactor KM trigger diode cannot be turned on to emit light, and charging cannot be normally carried out.
In the second case, a charging line short circuit condition occurs. After the charger is started, at the moment, the thyristor trigger gate pole 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 turned on to emit light, the positive electrode and the negative electrode of the charging wire have no current output, and the short circuit phenomenon can not be caused.
In the third situation, the battery pack is not connected, the charger is started firstly and then is connected with the charging wire, at the moment, the thyristor trigger gate pole 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 turned on to emit light, the positive electrode and the negative electrode of the charging wire have no current output, and the charging wire has no voltage, so that the personal safety of operators is guaranteed (compared with the battery voltage, the charging voltage is easier to form a loop on a human body to generate an electric shock accident), and the charging is not started until 5 seconds are delayed after the battery pack is inserted.
In the fourth situation, in the charging process, an operator pulls the charging wire down without permission and disconnects the charging loop. At the moment, 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 exists on a charging line at the moment, and the personal safety of an operator is guaranteed (compared with the voltage of a battery, the charging voltage is easier to form a loop on a human body, and an electric shock accident is caused). See fig. 4. The LOGO controller receives a switching value signal I from the Hall controller HET and outputs a pulse turn-off signal Q.
The control determination flow of the present apparatus/method is shown in fig. 5. The battery pack is inserted into the charging wire, and after the charger is electrified, the system starts to judge the polarity of the charging wire. Under the condition of positive connection, the charging current is normally output after being delayed for 5 seconds, and after the battery is fully charged, the charging main loop is automatically switched on/off for 3 cycles, so that the charging is automatically stopped. In the reverse connection case, the charging current is not output. And under the condition of short circuit of the charging wire, the charging current is not output.
LOGO controller theory of operation: the core of the invention is a thyristor and a LOGO controller, and the logic working flow of the LOGO controller is described in detail below. See fig. 6. Wherein, I1 is that the switching value signal that hall controller HET sent conveys pulse relay module B001 and count relay B003 respectively. Pulse relay B001 sends a pulse to or gate module B005 and Q1 sends a pulse command to control the thyristor circuit. When I1 continuously sends out a switching value signal for 3 times, the counting relay counts fully, sends out the switching value signal to an OR gate module B005, and a Q1 sends out a disconnection instruction to disconnect a thyristor loop and stop the circulating operation until the charger is powered off and restarted, and the counting returns to zero.
The invention utilizes the trigger principle of the thyristor to automatically detect the polarity of the battery pack, automatically delay charging under the normal condition and not charging under the reverse condition; the polarity of the battery pack is automatically detected by utilizing the trigger principle of a thyristor, the battery pack is automatically charged in a delayed mode under the normal condition, and the charging wire is not charged under the short-circuit condition; the polarity of the battery pack is automatically detected by utilizing the trigger principle of the thyristor, the battery pack is automatically charged in a delayed manner under the normal condition, and the battery pack is not charged under the condition of damage; the Hall controller is combined with a Siemens LOGO controller, a control program is programmed by setting a threshold value, so that when the battery pack is not connected, the charger is started firstly, and then the charging circuit is automatically disconnected under the condition of connecting the charging line, the personal safety of an operator is guaranteed (compared with the voltage of a battery, the charging voltage is easier to form a circuit on a human body, and an electric shock accident is generated), and charging is started after 5 seconds of delay is carried out after the battery pack is plugged; the Hall controller is combined with a Siemens LOGO controller, and a control program is programmed by setting a threshold value, so that a charging loop can be automatically disconnected when a charging wire is arbitrarily pulled out in the charging process, and personal safety of an operator is guaranteed (compared with a battery voltage, the charging voltage is easier to form a loop in a human body, and an electric shock accident is caused);
the invention utilizes the combination of a Hall controller and a Siemens LOGO controller, and programs a control program by setting a threshold value, so as to realize automatic judgment and closing of a charging loop after charging is finished, and prevent overcharge.
Claims (2)
1. A charging control device for a storage battery car in a tunnel is characterized in that a fuse FU, a divider resistor R4 and a divider resistor R5 which are connected in series are connected in parallel at the positive and negative ends of the device charger, the voltage of a connection point of the divider resistors R4 and R5 is control voltage Vc, the Vc provides power supply voltage 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 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 input end of the device charger is connected with the negative end of the device battery pack; the resistor R2 and the resistor R3 which are connected in series are connected in parallel at the positive and negative ends of the battery pack of the device, and the connection point of the resistor R2 and the resistor R3 which are connected in series is connected with the trigger 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 an SJ coil of the time relay, and after being connected in parallel, the contactor KM coil 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, wherein 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; hall element HET detects the main loop charging current and output control signal to LOGO controller, and LOGO controller output control signal control relay switch Q1 switches on or off.
2. The control method for the charging control device of the battery car in the tunnel according to claim 1, wherein after the device is connected with the positive electrode and the negative electrode of the charger, the power ends of the Hall controller HET and the LOGO controller are electrified, the LOGO controller sends out a low level with a pulse width of two seconds, after two seconds, the output of the LOGO controller controls the relay Q1 to be closed, and the forward voltage loop of the thyristor is closed; a time relay SJ coil is electrified, a time relay SJ delay switch is closed after 3 seconds, a contactor KM coil is electrified, a contactor KM normally-open switch is closed, a 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 de-energized, a contactor KM normally-open switch is disconnected, a charging main loop is disconnected, and under the condition that the device is normally connected with a charger and a battery pack, the LOGO controller controls the relay switch Q1 to be closed again 3 seconds after the charging main loop is disconnected, the contactor KM is electrified, the charging is started again to try to continue charging again, whether the charging current is smaller than a cut-off threshold value is detected again, 3 times of counting is set in the LOGO controller, after 3 times of charging power-off cycles are continuously carried out, if the charging current is detected to be smaller than a cut-off threshold value within 3 times, the LOGO controller sends a long-time closing instruction, the contactor KM is disconnected, and charging is completed; when the device is abnormally connected with the charger, the power supply end of the LOGO controller is not electrified, the relay Q1 controlled by the LOGO controller is in a disconnected state, the charging control circuit is in a disconnected state, and no charging current exists;
when the device is abnormally connected with the battery pack, the thyristor KG triggers the gate without normal trigger voltage, the thyristor KG does not work, the charging control circuit is in a disconnected state, and no charging current exists.
Priority Applications (1)
| 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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| 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 true CN111682602A (en) | 2020-09-18 |
| CN111682602B CN111682602B (en) | 2024-01-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113488710A (en) * | 2021-06-24 | 2021-10-08 | 中车南京浦镇车辆有限公司 | Self-locking control circuit for preventing over-discharge of storage battery of subway vehicle |
| 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 |
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|---|---|
| CN111682602B (en) | 2024-01-30 |
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