CN112366781B - Output voltage control method and device of charger, electronic equipment and storage medium - Google Patents
Output voltage control method and device of charger, electronic equipment and storage medium Download PDFInfo
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- CN112366781B CN112366781B CN202011248380.2A CN202011248380A CN112366781B CN 112366781 B CN112366781 B CN 112366781B CN 202011248380 A CN202011248380 A CN 202011248380A CN 112366781 B CN112366781 B CN 112366781B
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- chargers
- charger
- output voltage
- storage batteries
- charging system
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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
- H02J7/007—Regulation of charging or discharging current or voltage
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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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
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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
Abstract
The embodiment of the invention provides a method and a device for controlling output voltage of a charger, electronic equipment and a storage medium; the method comprises the following steps: determining the states of all chargers with storage batteries in the charging system; when all the chargers with storage batteries in the charging system are in a boosting current-limiting stage, whether all the chargers without storage batteries in the charging system can meet all direct current loads except for the storage battery loads is judged, if yes, output voltage is set for all the chargers without storage batteries according to a preset voltage value, and if not, output voltage is set for all the chargers without storage batteries according to the highest output voltage in all the chargers with storage batteries. According to the embodiment of the invention, the output voltage is set for the charger without the storage battery through the state of the storage battery charger in the charging system, so that the charger can meet the requirements of the rail vehicle, and the chargers share the direct current load of the whole rail vehicle as much as possible to balance the output current of the charger.
Description
Technical Field
The invention relates to the technical field of charging, in particular to a method and a device for controlling output voltage of a charger, electronic equipment and a storage medium.
Background
In a rail vehicle, the charger can not only charge the storage battery, but also supply power to a direct-current load in the rail vehicle.
The charger adopts a charging curve with temperature compensation for the storage battery. Under normal conditions, the charger charges the storage batteries in a one-to-one charging mode, namely, one charger only corresponds to one storage battery. However, in some cases, the number of chargers may be larger than the number of batteries due to other factors. That is, some chargers may independently correspond to one storage battery, but some chargers do not have a storage battery corresponding to the charger.
The chargers without corresponding storage batteries cannot acquire the temperature of the storage batteries, so that the output voltage cannot be determined for the chargers according to the charging mode of the charging curve with the temperature compensation. And further causes the problem of improper output matching with other chargers in the railway vehicle. The adverse effect caused by the method is that only the charger with high output voltage in the rail vehicle is provided with a direct current load, and the other chargers have no output, so that overcurrent faults of the heavily loaded charger are caused, and the power supply of the rail vehicle is influenced.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present invention provide a method and an apparatus for controlling an output voltage of a charger, an electronic device, and a storage medium.
The embodiment of the invention provides a charger output voltage control method which is applied to a charging system, wherein the charging system comprises a charger with a storage battery and a charger without the storage battery, and the chargers are connected through a network; the method comprises the following steps:
determining the states of all chargers with storage batteries in the charging system;
when all the chargers with storage batteries in the charging system are in a boosting current-limiting stage, whether all the chargers without storage batteries in the charging system can meet all direct current loads except for the storage battery loads is judged, if yes, output voltage is set for all the chargers without storage batteries according to a preset voltage value, and if not, output voltage is set for all the chargers without storage batteries according to the highest output voltage in all the chargers with storage batteries.
In the above technical solution, the method further comprises:
when all the chargers with storage batteries in the charging system are not in the step-up current-limiting stage, setting output voltages for all the chargers without storage batteries according to the highest output voltage of all the chargers with storage batteries.
In the above technical solution, the method further includes:
when part of the charged battery chargers in the charging system are in the boosting current-limiting stage, the output voltage is set for all the charged battery chargers without the charged battery according to the highest output voltage in the charged battery chargers which are not in the boosting current-limiting stage.
In the above technical solution, the preset voltage value is a temperature compensation voltage corresponding to the preset operating temperature.
In the above technical solution, the method further includes:
when a charger in a charging system fails, determining the type and the number of the failed chargers;
when all the chargers with storage batteries in the charging system have faults, the output voltages of all the chargers without storage batteries are uniformly set as fixed values;
when part of the chargers with storage batteries in the charging system have faults, the faulty chargers with storage batteries are logically removed from the charging system, and output voltage is set for the chargers without storage batteries according to the real-time state of the rest of the chargers with storage batteries which normally work;
when part of the non-battery chargers in the charging system fail, the failed non-battery chargers are logically removed from the charging system, and the output voltages of the non-battery chargers and the remaining normally operating non-battery chargers are maintained unchanged.
In the above technical solution, the method further includes:
when a temperature sensor of a storage battery in a charging system fails, setting the output voltage of a charger corresponding to the storage battery with the failed temperature sensor according to the charging voltage at the first working temperature;
the output voltage of the charger without accumulator and without failure is maintained unchanged.
In the above technical solution, the method further comprises:
when network communication faults occur in chargers in the charging system, output voltages are set for all chargers without storage batteries according to preset voltage values.
An embodiment of a second aspect of the present invention provides a charger output voltage control device, including:
the state determining module is used for determining the states of all chargers with storage batteries in the charging system;
and the output voltage setting module is used for judging whether all the battery chargers without the storage batteries in the charging system can meet all direct current loads except the storage battery load when all the battery chargers with the storage batteries in the charging system are in a boosting current limiting stage, setting output voltages for all the battery chargers without the storage batteries according to a preset voltage value if the battery chargers without the storage batteries in the charging system can meet the direct current loads, and setting the output voltages for all the battery chargers without the storage batteries according to the highest output voltage in all the battery chargers with the storage batteries if the battery chargers without the storage batteries in the charging system cannot meet the direct current loads.
An embodiment of a third aspect of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the method for controlling the output voltage of the charger according to the embodiment of the first aspect of the present invention when executing the program.
In a fourth aspect, the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the charger output voltage control method according to the embodiment of the first aspect of the present invention.
According to the output voltage control method, the device, the electronic equipment and the storage medium of the charger, provided by the embodiment of the invention, the output voltage is set for the charger without the storage battery through the state of the charger with the storage battery in the charging system, so that the charger can meet the requirements of the rail vehicle, and the chargers share the direct current load of the whole rail vehicle as much as possible to balance the output current of the charger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of boosting current limiting during battery charging;
FIG. 2 is a schematic diagram of constant voltage current reduction during battery charging;
FIG. 3 is a schematic view of a charging system in a rail vehicle in one example;
fig. 4 is a flowchart of a charger output voltage control method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a charger output voltage control device according to an embodiment of the present invention;
fig. 6 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Before describing the embodiments of the present invention in detail, the related concepts related to the embodiments of the present invention will be described first.
And (3) compensating the charging temperature of the storage battery: the severity of the chemical reaction and the temperature of the battery are closely related when the battery is charged. The chemical reaction degree of the storage battery at different temperatures is greatly different under the same charging voltage. The higher the battery temperature, the more vigorous the chemical reaction, and the lower the temperature, the more dilute the battery chemical reaction. Therefore, when the temperature of the storage battery is high, the float charge voltage needs to be reduced to slow down the chemical reaction due to the aggravation of the chemical reaction of the battery; when the temperature of the storage battery is low, the chemical reaction is slowed down, and at the moment, the float charging voltage needs to be increased to enhance the chemical reaction so as to ensure the normal conversion of energy, namely the storage battery charging temperature compensation.
Storage battery charging temperature compensation curve: the battery charging temperature compensation curve is used to describe the battery charging temperature compensation. The abscissa of the graph represents the temperature and the ordinate represents the charging voltage of the individual storage battery at the corresponding temperature.
Boosting and limiting current: the boosting current limiting is a stage of charging the storage battery, and means that the magnitude of charging current is kept unchanged and charging voltage is boosted when the storage battery is charged. Boost current limiting generally occurs when the battery voltage does not reach the voltage on the charge temperature compensation curve. Fig. 1 is a schematic diagram of boosting and limiting current in the process of charging a storage battery.
Constant-pressure flow reduction: constant voltage current reduction is also a stage of charging of the storage battery, and means that the charging voltage of the storage battery is kept unchanged and the charging current is continuously reduced during charging. Constant voltage down-flow generally occurs when the battery voltage reaches a voltage on the charge temperature compensation curve. Fig. 2 is a schematic diagram of constant voltage current reduction during battery charging.
The foregoing is a description of related concepts involved in embodiments of the present invention. Next, a charging system in a railway vehicle according to an embodiment of the present invention will be described.
The charging system in a rail vehicle according to an embodiment of the present invention includes: a storage battery and a charger; the number of the storage batteries is N, the number of the chargers is M, and M is a positive integer larger than N. Wherein, N chargers have storage batteries (one charger corresponds to one storage battery), and M-N chargers do not have storage batteries. The chargers are all connected with a network control system of the railway vehicle, and the chargers cannot be in direct communication with each other and need to transmit information of each other through the network control system.
Fig. 3 is a schematic diagram of a charging system in a rail vehicle according to an embodiment of the present invention. As shown in fig. 3, the charging system includes a first charger 1, a second charger 2, a third charger 3, and a fourth charger 4; the first charger 1 and the third charger 3 are chargers with storage batteries, that is, the first charger 1 has a corresponding first storage battery 5, and the third charger 3 has a corresponding second storage battery 6. The second charger 2 and the fourth charger 4 are chargers without storage batteries. The chargers are connected with a network control system of the railway vehicle, and the chargers cannot be in direct communication with each other and need to transmit information of each other through the network control system.
It should be noted that the charging system shown in fig. 3 is only an example, and in other embodiments, the total number of chargers, the number of chargers with batteries, and the number of chargers without batteries included in the charging system are not limited to the example shown in fig. 3.
The output voltage of a charger with a storage battery in the rail vehicle charging system can be determined according to the temperature of the storage battery and by referring to a charging temperature compensation curve of the storage battery.
Fig. 4 is a flowchart of a method for controlling an output voltage of a charger according to an embodiment of the present invention, and as shown in fig. 5, the method for controlling an output voltage of a charger according to an embodiment of the present invention includes:
and step 401, determining the states of all charged battery chargers in the charging system.
In the embodiment of the invention, the state of the charger comprises boosting current limiting, constant voltage current reducing and the like. The states of the chargers in the charging system are independent from each other, and in this step, the respective states of all the chargers with storage batteries need to be determined.
It should be understood by those skilled in the art that the charger with a storage battery according to the embodiments of the present invention refers to a charger with a storage battery that can normally operate, and similarly, the charger without a storage battery refers to a charger without a storage battery that can normally operate. If the charging system fails with or without the storage battery charger, the charging system can eliminate the failure.
In the subsequent judgment, whether the charged battery chargers are in the boosting current-limiting stage is taken as a judgment basis, and the specific judgment can be divided into three types, wherein one type is that all charged battery chargers in the charging system are in the boosting current-limiting stage, the second type is that all charged battery chargers in the charging system are not in the boosting current-limiting stage, and the third type is that part of charged battery chargers in the charging system are in the boosting current-limiting stage. For the three different types of situations, there are different processing flows.
In the embodiment of the invention, the output voltage is set for the battery charger without the charging system when all the battery chargers with the storage battery are in the boosting current limiting stage in the charging system.
Specifically, the number of the battery chargers in the charging system is N, and the N battery chargers are all in a boosting current limiting stage. The charging system is provided with M-N battery chargers without storage batteries. In order to prevent a low number of chargers with a higher output voltage, this is not sufficient to meet the requirements of a dc load in a rail vehicle. It is therefore further determined whether the M-N charging machines can satisfy all dc loads in the rail vehicle, except for the battery load. And if the output voltage can be met, setting the output voltages of the M-N non-battery chargers to be preset voltage values. The preset voltage value can be a temperature compensation voltage corresponding to a preset working temperature (such as the lowest working temperature), and the voltage value is necessarily larger than the output voltage of the battery charger.
If these M-N chargers cannot satisfy all dc loads in the rail vehicle, except for the battery load, then the respective output voltages of the N strip battery chargers can be obtained by the prior art, from which the highest value of the output voltage is selected, for example 120V. The output voltages for the M to N battery-less chargers in the charging system are set according to the selected maximum value of the output voltage, for example, the output voltages for the M to N battery-less chargers are all set to 120V.
It should be noted that the state of the charged battery chargers may change in real time, for example, in a first time period, all charged battery chargers in the charging system are in a voltage boosting current limiting stage, in a second time period, some charged battery chargers in the charging system are in a voltage boosting current limiting stage, and in a third time period, all charged battery chargers in the charging system are not in a voltage boosting current limiting stage. Once the state changes, the setting of the output voltage of the charger without the battery needs to be changed accordingly.
According to the method for controlling the output voltage of the chargers, provided by the embodiment of the invention, aiming at the condition that all chargers with storage batteries in a charging system are in a boosting current limiting stage, the output voltage is set for the chargers without the storage batteries, so that the chargers can meet the requirements of the rail vehicle, and the chargers share the direct current load of the whole rail vehicle as much as possible to balance the output current of the chargers.
Based on any of the above embodiments, in an embodiment of the present invention, the method further includes:
when all the chargers with storage batteries in the charging system are not in the step-up current-limiting stage, the output voltage is set for all the chargers without storage batteries according to the highest output voltage of all the chargers with storage batteries.
For example, there are N battery chargers in the charging system, which are not in the step-up current-limiting stage. The output voltages of the N rechargeable battery cells can be obtained by the prior art, and the highest value of the output voltage, for example 120V, is selected from the output voltages. The output voltages for the M to N battery-less chargers in the charging system are set according to the selected maximum value of the output voltage, for example, the output voltages for the M to N battery-less chargers are all set to 120V.
According to the output voltage control method of the charger, provided by the embodiment of the invention, aiming at the situation that all chargers with storage batteries in a charging system are not in a boosting current limiting stage, the output voltage is set for the chargers without the storage batteries, so that the chargers can meet the requirements of rail vehicles, and the chargers share the direct current load of the whole rail vehicle as much as possible to balance the output current of the chargers.
Based on any of the above embodiments, in an embodiment of the present invention, the method further includes:
when part of the charged battery chargers in the charging system are in the step-up current-limiting stage, setting output voltages for all the charged battery chargers without the charged battery chargers according to the highest output voltage in the charged battery chargers which are not in the step-up current-limiting stage.
For example, N battery chargers are arranged in the charging system, and if K (1 ≦ K ≦ N-1) of the N battery chargers are in the boosting current limiting stage, the remaining N-K battery chargers are not in the boosting current limiting stage. The highest value of the output voltage, for example 120V, is selected from the N-K charged battery chargers which are not in the step-up current-limiting stage. The output voltages for the M to N battery-less chargers in the charging system are set according to the selected maximum value of the output voltage, for example, the output voltages for the M to N battery-less chargers are all set to 120V.
The output voltage control method of the charger provided by the embodiment of the invention aims at the situation that part of chargers with storage batteries in a charging system are in a boosting current limiting stage, and the output voltage is set for the chargers without the storage batteries, so that the chargers can meet the requirements of rail vehicles, and the chargers share the direct current load of the whole rail vehicle as much as possible to balance the output current of the chargers.
Based on any of the above embodiments, in an embodiment of the present invention, the method further includes:
when a charger in a charging system fails, determining the type and the number of the failed chargers;
when all the chargers with storage batteries in the charging system have faults, the output voltages of all the chargers without storage batteries are uniformly set as fixed values;
when a part of the chargers with storage batteries in the charging system have faults, the chargers with storage batteries with faults are logically removed from the charging system, and output voltage is set for the chargers without storage batteries according to the real-time state of the rest of the chargers with storage batteries which normally work;
when part of the battery-free chargers in the charging system fail, the failed battery-free chargers are logically removed from the charging system, and the output voltages of the battery-free chargers and the remaining normally operating battery-free chargers are maintained unchanged.
In the embodiment of the invention, aiming at the condition that the charger has a fault, the output voltage of the corresponding charger is adjusted.
The failure of the charger relates to various specific conditions, including the type of the charger with the failure, such as the failure of the charger with the storage battery or the failure of the charger without the storage battery; the number of the chargers with faults is also included, for example, whether part of the chargers have faults or all the chargers have faults. There may be different processing flows for different situations.
When all the chargers with storage batteries in the charging system have faults, the output voltages of all the chargers without storage batteries are uniformly set to be fixed values. The fixed value is generally a safe output voltage value, such as 110V, and the specific size can be determined according to actual needs.
When a part of the charged battery chargers in the charging system have faults, the failed charged battery chargers are logically removed from the charging system, and output voltage is set for the charged battery chargers without the batteries according to the real-time state of the remaining normally working charged battery chargers.
For example, N battery chargers are arranged in the charging system, and L (1 ≦ L ≦ N-1) of the N battery chargers fail at present. Faulty chargers can be logically removed from the charging system as they will no longer be functional in the charging system. The number of the remaining battery chargers with storage batteries in the charging system is N-L. In the previous embodiment of the present invention, it was necessary to set the output voltage without battery charger according to the state of all the battery chargers in the charging system. When the L faulty rechargeable battery chargers are logically removed from the charging system, the remaining N-L rechargeable battery chargers are all the rechargeable battery chargers in the charging system.
Since the members of the charged battery chargers in the charging system are changed, the states of all the charged battery chargers are also likely to be changed. If the fault occurs, part of the charged battery chargers are in the boosting current limiting stage in the charging system, and after the fault occurs, all the charged battery chargers in the charging system are in the boosting current limiting stage.
According to the description of the previous embodiment of the invention, different output voltage setting strategies are set for the charger without the battery, according to the different states of all the chargers with the battery in the charging system. Therefore, after a part of the chargers with batteries fail, the output voltage needs to be set again for the chargers without batteries according to the real-time state of the rest of the chargers with batteries which normally work. The method of setting the output voltage may refer to the description in the foregoing embodiments of the present invention, and thus will not be repeated here.
When a portion of the non-battery chargers in the charging system fail, the failed non-battery chargers are logically removed from the charging system. Because the charger with the fault is not provided with the storage battery charger, the charger with the storage battery and the charger without the storage battery which is in the rest normal work can not be influenced, and the output voltage of the charger without the storage battery is kept unchanged.
It should be noted that, in theory, there are also situations in which all battery chargers without a storage battery fail. In this case, according to the prior art, the output voltage of the charged battery charger can be set according to the battery charging temperature compensation curve, and therefore, the description is not made in the embodiment of the present invention.
According to the output voltage control method of the charger, provided by the embodiment of the invention, aiming at the condition that the charger fails, corresponding failure solutions are set according to the type and the number of the failed chargers, so that the whole charging system is not influenced by failure devices.
Based on any of the above embodiments, in an embodiment of the present invention, the method further includes:
when a temperature sensor of a storage battery in a charging system fails, setting the output voltage of a charger corresponding to the storage battery with the failed temperature sensor according to the charging voltage at a first working temperature;
the output voltage of the charger without accumulator and without failure is maintained unchanged.
In the embodiment of the invention, the output voltage of the corresponding charger is adjusted aiming at the condition that the temperature sensor of the storage battery has faults.
Since the battery temperature sensor fails, the temperature of the battery during operation cannot be known although the battery can still operate normally. Therefore, the output voltage of a charger corresponding to the storage battery with the fault temperature sensor is set according to the charging voltage at the first working temperature. The first operating temperature is a common operating temperature, such as 20 degrees celsius.
Except for the charger corresponding to the storage battery with the fault temperature sensor, the output voltages of other chargers (including a charger without the storage battery and a charger with the storage battery without the fault storage battery) in the charging system are kept unchanged.
The charger output voltage control method provided by the embodiment of the invention sets a corresponding fault solution for the condition that the temperature sensor of the storage battery has a fault, so that the whole charging system is not influenced by a fault device.
Based on any of the above embodiments, in an embodiment of the present invention, the method further includes:
when network communication faults occur in chargers in the charging system, output voltage is set for all chargers without storage batteries according to a preset voltage value.
In the embodiment of the invention, aiming at the condition that the charger has network communication fault, the output voltage of the corresponding charger is adjusted.
In the charging system, once a network communication fault occurs in a charger (which can be a charger with a storage battery or a charger without the storage battery), output voltage is set for all chargers without the storage battery according to a preset voltage value.
The preset voltage value can be a temperature compensation voltage corresponding to a preset working temperature (such as the lowest working temperature), and the voltage value is necessarily greater than the output voltage of the charger with the storage battery.
It should be noted that, if the charger with the network communication failure is a charger without a storage battery, although the output voltage setting instruction cannot be received through the network, the output voltage may be set by presetting the control logic locally in the charger. For example, once a certain battery charger without a storage battery finds that normal network communication cannot be performed, a local preset control logic is called, and the preset voltage value is set as the output voltage value according to the preset control logic.
According to the charger output voltage control method provided by the embodiment of the invention, a corresponding fault solution is set for the situation that the charger has a network communication fault, so that the whole charging system is not influenced by a fault device.
Based on any of the above embodiments, fig. 5 is a schematic diagram of a charger output voltage control device provided in an embodiment of the present invention, and as shown in fig. 5, the charger output voltage control device provided in an embodiment of the present invention includes:
the state determining module 501 is configured to determine states of all chargers with storage batteries in the charging system;
the output voltage setting module 502 is configured to, when all the chargers with storage batteries in the charging system are in the voltage boosting and current limiting stage, determine whether all the chargers without storage batteries in the charging system can satisfy all the dc loads except for the storage battery load, if so, set output voltages for all the chargers without storage batteries according to a preset voltage value, and if not, set output voltages for all the chargers without storage batteries according to a highest output voltage of all the chargers with storage batteries.
The output voltage control device of the charger provided by the embodiment of the invention sets the output voltage for the charger without the storage battery aiming at the condition that all the chargers with the storage battery in the charging system are in the boosting current limiting stage, so that the charger can meet the requirements of the railway vehicle, and the chargers as much as possible share the direct current load of the whole railway vehicle to balance the output current of the charger.
Fig. 6 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 6, the electronic device may include: a processor (processor) 610, a communication Interface (Communications Interface) 620, a memory (memory) 630 and a communication bus 640, wherein the processor 610, the communication Interface 620 and the memory 630 communicate with each other via the communication bus 640. The processor 610 may call logic instructions in the memory 630 to perform the following method: determining the states of all chargers with storage batteries in the charging system; when all the chargers with storage batteries in the charging system are in a boosting current-limiting stage, whether all the chargers without storage batteries in the charging system can meet all direct current loads except for the storage battery loads is judged, if yes, output voltage is set for all the chargers without storage batteries according to a preset voltage value, and if not, output voltage is set for all the chargers without storage batteries according to the highest output voltage in all the chargers with storage batteries.
In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes.
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented by a processor to perform the method provided by the foregoing embodiments, for example, including: determining the states of all chargers with storage batteries in the charging system; when all the chargers with storage batteries in the charging system are in a boosting current-limiting stage, judging whether all the chargers without storage batteries in the charging system can meet all direct current loads except for the storage battery loads, if so, setting output voltage for all the chargers without storage batteries according to a preset voltage value, and if not, setting output voltage for all the chargers without storage batteries according to the highest output voltage of all the chargers with storage batteries
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for controlling output voltage of a charger is applied to a charging system, wherein the charging system comprises a charger with a storage battery and a charger without the storage battery, and the chargers are connected through a network; the method is characterized by comprising the following steps:
determining the states of all chargers with storage batteries in the charging system;
when all the chargers with storage batteries in the charging system are in a boosting current-limiting stage, judging whether all the chargers without storage batteries in the charging system can meet all direct current loads except for the storage battery loads, if so, setting output voltage for all the chargers without storage batteries according to a preset voltage value, and if not, setting output voltage for all the chargers without storage batteries according to the highest output voltage in all the chargers with storage batteries;
the direct-current load control system comprises a direct-current load, a storage battery charger and a control circuit, wherein the storage battery charger and the storage battery charger are electrically connected with all direct-current loads to form a power supply loop for all the direct-current loads;
the preset voltage value is the temperature compensation voltage corresponding to the lowest working temperature.
2. The output voltage control method of the charger according to claim 1, characterized in that the method further comprises:
when all the chargers with storage batteries in the charging system are not in the step-up current-limiting stage, the output voltage is set for all the chargers without storage batteries according to the highest output voltage of all the chargers with storage batteries.
3. The output voltage control method of the charger according to claim 1, characterized in that the method further comprises:
when part of the charged battery chargers in the charging system are in the boosting current-limiting stage, the output voltage is set for all the charged battery chargers without the charged battery according to the highest output voltage in the charged battery chargers which are not in the boosting current-limiting stage.
4. The output voltage control method of the charger according to any one of claims 1 to 3, characterized in that the method further comprises:
when a charger in a charging system fails, determining the type and the number of the failed chargers;
when all the chargers with storage batteries in the charging system have faults, the output voltages of all the chargers without storage batteries are uniformly set as fixed values; when part of the chargers with storage batteries in the charging system have faults, the faulty chargers with storage batteries are logically removed from the charging system, and output voltage is set for the chargers without storage batteries according to the real-time state of the rest of the chargers with storage batteries which normally work;
when part of the chargers without storage batteries in the charging system have faults, the chargers without storage batteries with faults are logically removed from the charging system, and the output voltages of the chargers with storage batteries and the rest of the chargers without storage batteries which normally work are kept unchanged;
wherein the fixed value is a safe output voltage value;
according to the real-time state of the rest normally working charger with the storage battery, the output voltage is set for the charger without the storage battery, and the method comprises the following steps:
determining the states of all the remaining normally-working chargers with storage batteries in the charging system;
when all the remaining normally working battery chargers with storage batteries in the charging system are in the step-up current-limiting stage, judging whether all the battery chargers without storage batteries in the charging system can meet all direct current loads except the storage battery loads, if so, setting output voltages for all the battery chargers without storage batteries according to a preset voltage value, and if not, setting output voltages for all the battery chargers without storage batteries according to the highest output voltage in all the remaining normally working battery chargers with storage batteries.
5. The output voltage control method of the charger according to any one of claims 1 to 3, characterized in that the method further comprises:
when a temperature sensor of a storage battery in a charging system fails, setting the output voltage of a charger corresponding to the storage battery with the failed temperature sensor according to the charging voltage at the default temperature when the storage battery works;
the output voltage of the charger without the accumulator and with the accumulator without the failure in the accumulator in the charging system is maintained unchanged.
6. The output voltage control method of the charger according to any one of claims 1 to 3, characterized in that the method further comprises:
when network communication faults occur in chargers in the charging system, output voltages are set for all chargers without storage batteries according to a preset voltage value, wherein the preset voltage value is a temperature compensation voltage corresponding to the lowest working temperature.
7. The utility model provides a quick-witted output voltage control device charges which characterized in that includes:
the state determining module is used for determining the states of all battery chargers with storage batteries in the charging system;
the output voltage setting module is used for judging whether all the chargers without the storage batteries in the charging system can meet all direct current loads except the storage battery loads when all the chargers with the storage batteries in the charging system are in a boosting current limiting stage, if so, setting output voltages for all the chargers without the storage batteries according to a preset voltage value, and if not, setting the output voltages for all the chargers without the storage batteries according to the highest output voltage in all the chargers with the storage batteries;
the direct-current load control system comprises a direct-current load, a storage battery charger and a control circuit, wherein the storage battery charger and the storage battery charger are electrically connected with all direct-current loads to form a power supply loop for all the direct-current loads;
the preset voltage value is the temperature compensation voltage corresponding to the lowest working temperature.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of the charger output voltage control method according to any one of claims 1 to 6 when executing the program.
9. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the output voltage control method of the charger according to any one of claims 1 to 6.
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