CN114559830A - Charger control system, control method and train - Google Patents
Charger control system, control method and train Download PDFInfo
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- CN114559830A CN114559830A CN202210227572.8A CN202210227572A CN114559830A CN 114559830 A CN114559830 A CN 114559830A CN 202210227572 A CN202210227572 A CN 202210227572A CN 114559830 A CN114559830 A CN 114559830A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004146 energy storage Methods 0.000 claims abstract description 87
- 238000007600 charging Methods 0.000 claims abstract description 63
- 238000010280 constant potential charging Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- B60L53/20—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 converters located in the vehicle
-
- 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
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a charger control system, a control method and a train, which comprise the following steps: the system comprises a main control system, a plurality of chargers, an energy storage unit and a train power supply bus, wherein the chargers are all connected to the train power supply bus; at least part of the chargers are respectively connected to the energy storage units, collect the voltages of the connected energy storage units, charge the energy storage units according to a set charging curve, and supply power to a train power supply bus; the main control system is respectively communicated with the chargers, and controls the chargers according to the voltage of each battery so that the output voltage of a single charger is in a set range under different conditions. The invention avoids the problems of overcurrent and shutdown caused by overload of the charger with high output voltage, thereby solving the problem of large power failure of the train caused by the shutdown of all the train chargers.
Description
Technical Field
The invention belongs to the technical field of charger control, and particularly relates to a charger control system, a charger control method and a train.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The rail transit becomes one of effective passenger transport means, and the train number is more and more, becomes the important mode of transportation of daily trip.
In the charging process of the train, a plurality of chargers simultaneously supply power to the bus. In the process, when the batteries are in different charging stages, the output voltages of the chargers are different, and the problem that a single charging machine carries full-column loads exists, so that the problems of overcurrent, blockage and shutdown of the chargers are caused.
For example: the original 4 chargers jointly bear the power supply of the train, if one of the chargers blocks the dead halt, the burden of the remaining three tasks is heavier, if one of the chargers blocks the dead halt, the charger bears the load of the whole train and blocks the dead halt to form a vicious circle, finally the charger of the whole train stops, even the train is greatly powered off, and the train operation has larger potential safety hazards.
Disclosure of Invention
The invention provides a charger control system, a charger control method and a train to solve the problems.
According to some embodiments, the invention adopts the following technical scheme:
in a first aspect, a charger control system is disclosed, comprising:
the system comprises a main control system, a plurality of chargers, an energy storage unit and a train power supply bus, wherein the chargers are all connected to the train power supply bus;
at least part of the chargers are respectively connected to the energy storage units, collect the voltages of the connected energy storage units, charge the energy storage units according to a set charging curve and simultaneously supply power to a train power supply bus;
the main control system is respectively communicated with the chargers, and controls the chargers according to the voltage of each battery so that the output voltage of a single charger is in a set range under different conditions.
In some embodiments, the charger detects the voltage and temperature information of the connected energy storage unit and uploads the information to the main control system.
In some embodiments, the charger collects the temperature of the connected battery, performs temperature compensation on the battery charged by the charger, and adjusts the charging voltage of the battery.
In some embodiments, the train power supply bus is used for supplying power to train loads, and the energy storage unit stores output energy of a charger and supplies power to the train bus through a battery when the charger is not in operation.
In some embodiments, when the charger detects that the voltage of the energy storage unit is lower than the first threshold, it is determined that the charger is not currently connected with a battery, the charger starts working at a constant voltage, and if the charger is connected with the energy storage unit, the charging current exceeds the limit, and the charger stops and blocks.
In some embodiments, when the charger detects that the voltage of the energy storage unit is greater than the first threshold and less than the second threshold, it determines that the charger is no longer started when the energy storage unit is connected but the undervoltage is severe.
In some embodiments, when the charger detects that the voltage of the energy storage unit is greater than the second threshold, it determines that the connected battery is normal, and the charger operates according to a charging curve.
In some embodiments, when the charger operates according to a charging curve, in a boosting current-limiting stage, when the voltage of the battery does not reach the voltage on the charging curve, the charger adopts boosting current-limiting charging;
when the voltage of the battery reaches the voltage on the charging curve, the charger adopts constant voltage charging, and the charging voltage is according to the voltage on the charging curve.
In a second aspect, a charger control method is disclosed, which includes:
collecting the voltage of an energy storage unit connected with a charger, charging the energy storage unit according to a set charging curve, and supplying power to a train power supply bus;
the main control system controls the chargers according to the voltage of each battery, so that the chargers are matched with each other, and the output voltage of a single charger is in a set range under different conditions.
In some embodiments, the method includes controlling the plurality of chargers to cooperate with each other, specifically:
when one charger connected with the energy storage unit is in a boosting current-limiting stage, the output voltage of the other chargers is consistent with the output voltage of the charger connected with the energy storage unit with high output voltage;
when two chargers are in a boosting current-limiting stage, the rest chargers which are not connected with the energy storage unit output the highest output voltage at 0 ℃;
when the charger is not in the step-up current-limiting stage, the output voltage of the charger which is not connected with the energy storage unit is kept consistent with the output voltage of the charger which is connected with the energy storage unit.
In some implementation examples, the charger further collects the temperature value of the connected energy storage unit and uploads the temperature value to the main control system;
the main control system compares the temperature values of the two groups of energy storage units, and when the temperature difference value of the two groups of energy storage units exceeds a set value, the main control system sends out early warning and reminding.
In some embodiments, when a single charger connected to the energy storage unit fails, the output voltages of the 2 chargers not connected to the energy storage unit are consistent with the output voltage of the normally operating charger connected to the energy storage unit;
when a single charger which is not connected with the energy storage unit fails, the output voltage of the charger which is not connected with the energy storage unit and is directly connected with the bus is kept consistent with the high output voltage of the 2 chargers connected with the energy storage unit.
When a single charger which is not connected with the energy storage unit fails, the output voltage of the charger which is not connected with the energy storage unit and has no fault is kept consistent with the high output voltage of the 2 chargers connected with the energy storage unit;
when all chargers which are not connected with the energy storage unit fail, the output voltages of the chargers which are not failed and are connected with the energy storage unit are charged according to a charging curve; if the current output of the charger connected with the energy storage unit reaches the maximum value, the output is maintained in a voltage reduction and current limiting mode, so that the charger connected with the energy storage unit is prevented from being blocked due to overcurrent;
and when one charger connected with the energy storage unit fails, the rest chargers not connected with the energy storage unit output the voltage according to the voltages of the chargers not connected with the energy storage unit.
When all the chargers connected with the energy storage unit are in fault, the rest chargers not connected with the energy storage unit output the highest voltage according to the 0-degree time.
And any charger connected with the energy storage unit is in communication failure with the master control system, and the rest chargers not connected with the energy storage unit output the highest voltage according to 0 ℃.
Wherein 0 degree can be changed to other temperatures according to requirements, such as-30 degrees, -20 degrees, -10 degrees, +10 degrees, etc.
In a third aspect, a train is disclosed, and the train is charged by adopting the control method or the control system.
Compared with the prior art, the invention has the beneficial effects that:
the invention thoroughly avoids the problems of overcurrent and shutdown caused by overload of the charger with high output voltage through the train charger control strategy, thereby thoroughly solving the problems of large power failure of the train caused by the shutdown of all the train chargers and influencing the operation order and ensuring the safe, reliable and orderly operation of the train.
According to the invention, a specific control strategy is given by how a plurality of chargers are matched, and the chargers can be kept in a normal working range through the control strategy.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
FIG. 1 is a block diagram of a charging system according to an embodiment of the present invention;
fig. 2(a) -2 (b) are schematic diagrams illustrating battery charging according to an embodiment of the present invention.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The first embodiment is as follows:
in this embodiment, a train is taken as an example, but this does not mean that the charger control system provided by the present invention is only applicable to charging of a train. It can be applied to charging of other devices depending on the charging target.
In the specific implementation example, as shown in fig. 1, the main control system, the charger 1, the charger 2, the charger 3, the charger 4, the battery 1, the battery 2, and the like, and the train power supply bus are mainly provided.
During specific implementation, the chargers can be connected with the storage batteries or part of the storage batteries, and if the chargers can not be connected with the storage batteries, the buses can be directly supplied with power. The connection relationship between the charger and the battery can be adjusted according to actual needs, and the connection relationship shown in fig. 1 is only one embodiment.
The charger 1 collects the voltage of the battery 1, charges the battery 1 according to a certain charging curve, and simultaneously supplies power to the train power supply bus.
The charger 1 collects the temperature of the battery 1, adjusts the charging voltage of the battery, determines according to the characteristic requirement of the battery during adjustment, and reduces the charging voltage if the temperature of the battery is higher than a set value.
The temperature of the battery 1 is collected, the temperature compensation is carried out on the charging of the battery 1 by a charger, the temperature compensation is determined according to the characteristic requirement of the battery during the compensation, and if the temperature of the battery is increased, the charging voltage is reduced.
And the train power supply bus supplies power to the train load.
And the battery 1 stores the output energy of the charger 1, and supplies power to the train bus through the battery 1 under the condition that the charger 1 does not work.
The charging curve is divided into three stages, namely a boosting constant-current charging stage, a constant-voltage current-reducing charging stage and a floating charging current-limiting stage.
The charger 2 has the same function as the charger 1, and the battery 2 has the same function as the battery 1.
The charger 3 is connected with a train power supply bus to supply power to the train power supply bus; the charger 4 is connected with a train power supply bus to supply power to the train power supply bus.
The charger detects information such as battery voltage and temperature and uploads the information to the main control system, the main control system manages each charger according to the battery voltage and a specific charging strategy, the charging strategies of the chargers under different conditions are guaranteed, and the conditions that the output voltage of each charger is too high, so that the single charger carries full-line load and overcurrent and shutdown are avoided.
Example two:
based on the system of the first embodiment, the charger control method comprises the following steps:
the charger sends the data to the main control system: battery temperature, charging current, operating condition. As the chargers 1 and 2 in the attached drawing 1 are both connected with the storage battery, data are sent to the master control system.
The main control system sends data to the charger: and outputting the voltage, and receiving signals of a control system by the chargers 3 and 4 to control the voltage output.
If the charger detects that the voltage of the battery connected with the charger is lower than U1, the charger considers that the battery is not connected at present, the charging machine can start working at constant voltage, if the battery is connected at the moment, the charging current exceeds the limit, and the charging machine can stop and block. If the detected battery voltage is between U1-U2, the battery is considered to be connected but the undervoltage is serious, and the charger cannot be started. If the voltage of the battery exceeds U2, the battery connected with the battery is considered to be normal, and the corresponding charger works according to the charging curve.
The charging method is determined according to the characteristics of the secondary battery, and in one method, the battery is charged as shown in fig. 2(a) -2 (b):
a boosting current limiting stage:
charger 1, charger 2: when the battery voltage does not reach the voltage on the charging curve (specifically, the highest voltage of boosting charging at the temperature), the charger 1 and the charger 2 adopt boosting current-limiting charging, and limit the charging current to 0.2C, namely 36A, wherein the parameters are suggested values in the standard, and the charging can also be carried out according to the requirement of the storage battery, and can be 0.3C or other values.
And when the charging current is less than 30A, the step-up current-limiting stage is exited, and the step-up current-limiting stage is switched to the constant-voltage charging stage.
A constant pressure stage:
charger 1, charger 2: when the voltage of the battery reaches the voltage on the charging curve, the charger adopts constant voltage charging, and the charging voltage is according to the voltage on the charging curve.
Aiming at the matching strategy among a plurality of chargers, the balanced work is realized, one charger is prevented from blocking dead halt caused by bearing all work, and the hidden danger of large power failure of the train caused by unbalanced work of the charger is solved.
Specifically, when 1 charger is in the step-up current-limiting stage, the output voltages of the charger 3 and the charger 4 are consistent with the output voltage of the charger with the higher voltage in the charger 1 and the charger 2.
When 2 chargers are in the boosting current-limiting stage, 119.34V is output by the charger 3 and the charger 4 according to 0 degree.
When no charger is in the step-up current-limiting stage, the output voltages of the charger 3 and the charger 4 are kept consistent with the output voltages of the charger 1 and the charger 2 which are connected with the battery, and the voltage output of the charger is controlled by the control system when being specifically realized.
When the chargers are started, the two chargers which are not connected with the batteries output 119.34V at 0 degree initially.
Fault condition of the above control system
Cell temperature abnormality:
when the battery temperature sensor fails, it is output at a 20 degree charging voltage.
Failure of a single charger connected to the battery:
the output voltage of the 2 chargers which are not connected with the battery is consistent with the output voltage of the charger which is normally operated and connected with the battery.
Failure of a single charger not connected to a battery:
the output voltage of the charger of the direct connection bus without failure is consistent with the high output voltage of the 2 chargers connected with the battery.
Two chargers failed:
when the chargers 1 and 2 are in failure, the chargers 3 and 4 output 119.34V at 0 degree.
When the chargers 1 and 2 have a fault, the output voltages of the chargers 3 and 4 are consistent with the output voltages of the chargers 1 and 2 which have no fault.
Communication faults between the charger and the master control system:
and when any one of the chargers 1 and 2 fails to communicate with the main control system, the chargers 3 and 4 output 119.34V at 0 degree.
Protection strategy:
the temperature of two sets of batteries is all passed to master control system, and master control system compares the temperature value of two sets of batteries, and when the temperature difference of two sets of batteries exceeded 10 degrees centigrade (temporarily), the master control system early warning was reminded.
When the temperature of the battery exceeds 65 ℃, the battery temperature is considered to be over-high and early-warning is reported by the master control system. When the temperature of the battery exceeds 70 ℃, the battery is considered to be overhigh and alarm, and the battery is reported to the master control system. When the temperature of the battery is lower than minus 5 ℃, the master control system gives an alarm if the temperature of the battery is abnormal.
The train charger control strategy thoroughly avoids the problems of overcurrent and shutdown caused by overload of the charger with high output voltage, thereby thoroughly solving the problem that the operation order is influenced by large power failure of a train caused by the shutdown of all the train chargers and ensuring the safe, reliable and orderly operation of the train.
According to the invention, a specific control strategy is given by how a plurality of chargers are matched, and the chargers can be kept in a normal working range through the control strategy.
If the train is provided with 4 chargers, if only two chargers can charge the storage battery and supply power to the bus, and the other two chargers can only supply power to the bus, the control system can allocate the working states of the four chargers, so that the balance of the working capacity of the four chargers is ensured; meanwhile, when the charger for the storage battery charger works, the output voltage of the rest chargers which do not charge the storage battery changes along with the output voltage of the charger which charges the storage battery, and the 4 chargers are guaranteed to work in a balanced mode.
Example three:
the embodiment of the invention also discloses a train which is charged by adopting the control method or the control system.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A charger control system is characterized by comprising:
the system comprises a main control system, a plurality of chargers, an energy storage unit and a train power supply bus, wherein the chargers are all connected to the train power supply bus;
at least part of the chargers are respectively connected to the energy storage units, collect the voltages of the connected energy storage units, charge the energy storage units according to a set charging curve, and supply power to a train power supply bus;
the main control system is respectively communicated with the chargers, and controls the chargers according to the voltage of each battery so that the output voltage of a single charger is in a set range under different conditions.
2. The charger control system according to claim 1, wherein the charger detects the voltage and temperature information of the connected energy storage unit and uploads the information to the main control system;
the charger collects the temperature of the connected battery, performs temperature compensation on the battery charged by the charger, and adjusts the charging voltage of the battery.
3. The charger control system according to claim 1, wherein said train power supply bus is used for supplying power to a train load, and said energy storage unit stores the output energy of the charger and supplies power to the train bus via the battery when the charger is not in operation.
4. The charger control system according to claim 1, wherein when the charger detects that the voltage of the energy storage unit is lower than a first threshold value, the charger determines that the charger is not currently connected with a battery, the charger starts working at a constant voltage, and if the charger is connected with the energy storage unit, the charging current exceeds the limit, and the charger stops and is locked;
when the charger detects that the voltage of the energy storage unit is greater than a first threshold value and less than a second threshold value, the charger judges that the energy storage unit is connected but the undervoltage is serious, and the charger is not started any more;
and when the charger detects that the voltage of the energy storage unit is greater than a second threshold value, the connected battery is judged to be normal, and the charger works according to a charging curve.
5. The control system of the charger according to claim 4, wherein when the charger operates according to the charging curve, the charger adopts boost current-limiting charging when the battery voltage does not reach the voltage on the charging curve in the boost current-limiting stage;
when the voltage of the battery reaches the voltage on the charging curve, the charger adopts constant voltage charging, and the charging voltage is according to the voltage on the charging curve.
6. A charger control method is characterized by comprising the following steps:
collecting the voltage of an energy storage unit connected with a charger, charging the energy storage unit according to a set charging curve, and supplying power to a train power supply bus;
the main control system controls the chargers according to the voltage of each battery, so that the chargers are matched with each other, and the output voltage of a single charger is in a set range under different conditions.
7. The charger control method according to claim 6, characterized by controlling a plurality of chargers to cooperate with each other, specifically:
when one charger connected with the energy storage unit is in a boosting current-limiting stage, the output voltage of the charger not connected with the energy storage unit is kept consistent with the output voltage of the charger connected with the energy storage unit;
when all the chargers connected with the energy storage units are in a boosting current-limiting stage, outputting the highest output voltage of the rest chargers not connected with the energy storage units according to the required temperature;
when no charger is in the step-up current-limiting stage, the output voltage of the charger which is not connected with the energy storage unit is kept consistent with the output voltage of the charger which is connected with the energy storage unit;
when the charger is started, the charger which is not connected with the energy storage unit outputs the highest output voltage according to the required temperature.
8. The control method of the charger according to claim 6, wherein the charger further collects the temperature value of the connected energy storage unit and uploads the temperature value to the main control system;
the master control system compares the temperature values of the two groups of energy storage units, and when the temperature difference value of the two groups of energy storage units exceeds a set value, the master control system sends out early warning prompt;
preferably, when the charger connected with the energy storage unit collects a fault of the temperature sensor, the charger outputs charging voltage corresponding to the set temperature.
9. The charger control method according to claim 6, characterized in that when a single charger connected to the energy storage unit fails, the output voltages of 2 chargers not connected to the energy storage unit are kept consistent with the output voltage of a charger connected to the energy storage unit that is normally operating;
preferably, when a single charger which is not connected with the energy storage unit fails, the output voltage of the charger which is not connected with the energy storage unit and does not fail is kept consistent with the high output voltage of the 2 chargers connected with the energy storage unit;
preferably, when all chargers which are not connected with the energy storage unit fail, the output voltages of the chargers which are not failed and are connected with the energy storage unit are charged according to a charging curve; if the current output of the charger connected with the energy storage unit reaches the maximum value, the output is maintained in a voltage reduction and current limiting mode, so that the charger connected with the energy storage unit is prevented from being blocked due to overcurrent;
preferably, when one charger connected with the energy storage unit fails, the rest chargers not connected with the energy storage unit output according to the voltage of the charger connected with the energy storage unit which does not fail;
preferably, when all the chargers connected with the energy storage unit are in failure, the rest chargers not connected with the energy storage unit output the highest voltage according to the required temperature;
preferably, any charger connected with the energy storage unit has a communication fault with the main control system, and the rest chargers not connected with the energy storage unit output the highest voltage according to the required temperature.
10. A train, wherein charging is performed by the control method according to any one of claims 6 to 9 or the control system according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210227572.8A CN114559830B (en) | 2022-03-08 | 2022-03-08 | Charger control system, control method and train |
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| CN202210227572.8A CN114559830B (en) | 2022-03-08 | 2022-03-08 | Charger control system, control method and train |
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| CN114559830B CN114559830B (en) | 2024-06-07 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005094885A (en) * | 2003-09-16 | 2005-04-07 | Sumitomonacco Materials Handling Co Ltd | Battery charger |
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| CN114559830B (en) | 2024-06-07 |
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