CN110970994A - Uninterrupted power system applied to train - Google Patents
Uninterrupted power system applied to train Download PDFInfo
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- CN110970994A CN110970994A CN202010124890.2A CN202010124890A CN110970994A CN 110970994 A CN110970994 A CN 110970994A CN 202010124890 A CN202010124890 A CN 202010124890A CN 110970994 A CN110970994 A CN 110970994A
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides an uninterrupted power source system, set up power supply control module in this system, this power supply control module is according to the first power supply voltage of train battery output and the second power supply voltage of energy storage module output, and the control transmits the direct current of train battery or energy storage module output for voltage conversion module to avoid leading to the unusual condition of train monitoring system appearance because of the voltage among the direct current of train battery or energy storage module output is unusual.
Description
Technical Field
The application relates to the technical field of power supply, in particular to an uninterruptible power supply system applied to a train.
Background
In addition to the train battery, the train is provided with an Uninterruptible Power Supply (UPS) system. The train storage battery can directly convert high-voltage electricity input from the outside of the train into low-voltage electricity of various vehicle-mounted devices on the train. The uninterruptible power supply system is connected with the train storage battery, the uninterruptible power supply system can output the electric energy input by the train storage battery to a train monitoring system on the train, and the electric energy can be stored through an energy storage module in the uninterruptible power supply system. Therefore, under the condition that the train storage battery is powered off, the uninterruptible power supply system can also continuously supply power to the train monitoring system.
In the running process of a train, the output electric energy of a train storage battery on the train often has voltage abnormity, and under the condition, the electric energy output by the train storage battery is output to a train monitoring system through an uninterruptible power supply system, so that the abnormity of the train monitoring system is likely to occur; in addition, when the uninterruptible power supply system passes through the internal energy storage module to the train monitoring system, the situation that the train monitoring system is abnormal or even damaged due to abnormal voltage can easily occur. Therefore, a need exists in the art for improving the power supply stability of an uninterruptible power supply system to reduce the occurrence of abnormal conditions in a train monitoring system due to abnormal voltage of the electric energy output by the uninterruptible power supply.
Disclosure of Invention
In view of this, an embodiment of the present application provides an uninterruptible power supply system applied to a train, so as to monitor a supply voltage output by a train storage battery or an energy storage module, so as to avoid an abnormal condition of the train monitoring system caused by an abnormal supply voltage.
The embodiment of the application provides the following technical scheme:
the application provides an uninterrupted power source system for on train, includes:
the power supply control module, the energy storage module connected with the power supply control module, and the voltage conversion module connected with the power supply control module;
the power supply control module is used for obtaining a first power supply voltage output by a train storage battery on a train to the uninterruptible power supply system and a second power supply voltage output by the energy storage module, and controlling to transmit direct current output by the train storage battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage;
the voltage conversion module is used for converting the input direct current into direct current with a first voltage value, and the first voltage value is a voltage value required by a train monitoring system on the train.
Optionally, the voltage conversion module is further configured to convert the input direct current into a direct current with a second voltage value, where the second voltage value is a voltage value required by the onboard device on the train.
Optionally, when the power supply control module controls to transmit the direct current output by the train storage battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage, the power supply control module is specifically configured to:
if the first power supply voltage is within a set voltage threshold range, transmitting the direct current output by the train storage battery to the voltage conversion module;
and if the second power supply voltage is within a preset voltage threshold range and the first power supply voltage is not within the voltage threshold range, transmitting the direct current output by the energy storage module to the voltage conversion module.
Optionally, the power supply control module is further configured to:
and when the first power supply voltage and the second power supply voltage are not in the voltage threshold range, controlling to interrupt the direct current output from the train storage battery or the energy storage module to the voltage conversion module.
Optionally, the power supply control module specifically includes:
the voltage acquisition circuit is connected with the train storage battery and the energy storage module and is used for acquiring the first power supply voltage and the second power supply voltage;
and the logic control circuit is connected with the voltage acquisition circuit and is used for controlling the direct current output by the train storage battery or the energy storage module to be transmitted to the voltage conversion module according to the first power supply voltage and the second power supply voltage.
Optionally, the energy storage module is formed by connecting 2 lead-acid storage batteries in series.
Optionally, the uninterruptible power supply system further includes: the soft start circuit is connected with the power supply control module;
and the soft start circuit is used for inhibiting surge current in direct current output to the uninterruptible power supply system by the train storage battery.
Optionally, the uninterruptible power supply system further includes: the filter is connected with the power supply control module;
and the filter is used for filtering the direct current output by the train storage battery to the uninterruptible power supply system.
Optionally, the power supply control module is further configured to generate a first disconnection instruction when it is determined that the train storage battery is not required to supply power to the train monitoring system;
the system further comprises: a first switch module for connecting the power supply control module with the train battery;
the first switch module is used for disconnecting the connection between the power supply control module and the train storage battery according to the first disconnection instruction.
Optionally, the power supply control module is further configured to generate a second disconnection instruction when it is determined that the energy storage module is not required to supply power to the train monitoring system;
the system further comprises: the second switch module is used for communicating the power supply control module with the energy storage module;
and the second switching module is used for disconnecting the connection between the power supply control module and the energy storage module according to the second disconnection instruction.
According to the technical scheme, the power supply control module is arranged in the train monitoring system, the module controls the direct current output by the train storage battery or the energy storage module to be transmitted to the voltage conversion module according to the first power supply voltage output by the train storage battery and the second power supply voltage output by the energy storage module, and therefore the abnormal condition of the train monitoring system caused by the abnormal voltage in the direct current output by the train storage battery or the energy storage module is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating an uninterruptible power supply system provided by the present application;
FIG. 2 is a schematic flow chart illustrating a power control implemented by the power supply control module provided in the present application;
FIG. 3 illustrates a schematic structural diagram of a power supply control module provided by the present application;
fig. 4 is a schematic diagram illustrating another structure of an uninterruptible power supply system provided by the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be practiced otherwise than as specifically illustrated.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
Referring to fig. 1, an uninterruptible power supply system applied to a train is provided in an embodiment of the present application, and the system is applied to a train side and at least used for providing power for a train monitoring system on the train. The system comprises: the power supply control module 101, the energy storage module 102 connected with the power supply control module, and the voltage conversion module 103 connected with the power supply control module. Wherein:
and the power supply control module 101 is configured to obtain a first power supply voltage output by a train battery on the train to the uninterruptible power supply system and a second power supply voltage output by the energy storage module, and control to transmit the direct current output by the train battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage.
And the energy storage module 102 is used for storing electric energy and outputting direct current to the voltage conversion module under the control of the power supply control module.
It can be appreciated that in order for the ups system to continuously provide power to the train monitoring system on the train, the ups system needs to be connected to the train battery on the train when the ups system is applied to the train. Correspondingly, under the condition that the train storage battery is not powered off, the current output by the train storage battery is transmitted to the train monitoring system through the uninterruptible power supply system, and meanwhile, the current output by the train storage battery can also be input into the energy storage module in the uninterruptible power supply system, so that under the abnormal conditions of power failure and the like of the train storage battery, the electric energy is output to the train monitoring system through the energy storage module, and the power failure of the train monitoring system is avoided.
Correspondingly, under the condition that the uninterruptible power supply system is provided with the power supply control module, the power supply control module is electrically connected with the energy storage module and the train storage battery on the train, and the train storage battery or one of the energy storage modules is controlled by the power supply control module to transmit electric energy to the train monitoring system. On the basis, in order to ensure the reliability of power supply, the power supply control module can also respectively obtain the power supply voltage of the direct current output by the train storage battery and the power supply voltage of the direct current output by the energy storage module.
In order to distinguish two power supply voltages, the power supply voltage of the direct current output by the train storage battery is called a first power supply voltage; the supply voltage of the direct current output by the energy storage module is referred to as a second supply voltage.
For example, the power supply control module compares the voltage values of the first power supply voltage and the second power supply voltage with the voltage threshold ranges, and selects one of the train storage battery and the energy storage module to provide direct current for the voltage conversion module according to the comparison result.
The voltage conversion module 103 is configured to convert an input direct current into a direct current having a first voltage value, where the first voltage value is a voltage value required by a train monitoring system on the train.
It should be noted that the voltage value required by the train monitoring system is a first voltage value (e.g., 110V). And the first power supply voltage or the second power supply voltage output by the train storage battery or the energy storage module is not the first voltage value required by the train monitoring system. For this purpose, a voltage conversion module is required to convert the voltage of the dc power output by the train battery or the energy storage module, for example: the power supply voltage of the direct current output by the train storage battery or the energy storage module is 24V, the direct current with 110V can be obtained after passing through the voltage conversion module, and the direct current is used for supplying power for the train monitoring system.
The voltage conversion module may be any voltage conversion device, and is not particularly limited herein. Such as: DC/DC (direct current to direct current) converters of the type that can convert direct current from a high voltage to a low voltage or vice versa. For example: the voltage conversion module can be a DC/DC converter for converting 24V direct current into 110V direct current.
Certainly, when the voltage conversion module converts the 24V direct current output by the train storage battery or the energy storage module into the 110V direct current according to the requirement of the train monitoring system on the power supply voltage, the converted 110V direct current may have an amplitude deviation of ± 2V. Wherein, in order to guarantee the normal work of train monitored control system, the maximum current of the direct current of voltage conversion module output is 4.5A.
It should be noted that, in the process of controlling and managing the train monitoring system, control and data interaction between the on-board devices may be involved, and therefore, in order to ensure effective monitoring of the train monitoring system on the on-board devices, the voltage value output by the voltage conversion module may also supply power to such on-board devices.
For this purpose, the voltage conversion module is further configured to convert the input dc power into dc power having a second voltage value, where the second voltage value is a voltage value required by the onboard equipment on the train. For example: the voltage value required by the vehicle-mounted equipment is 24V direct current, and the voltage conversion module obtains the power supply voltage required by the vehicle-mounted equipment through a 24V to 24V direct current converter.
As can be seen from the above, the voltage conversion module of the present application can meet various voltage conversion requirements, and includes a plurality of voltage conversion devices inside the module, for example: the voltage conversion module comprises: a first DC converter for converting 24V DC to 110V DC, a second DC converter for converting 24V DC to 24V DC, and the like.
For example, according to the requirement of such on-board equipment for the power supply voltage, when the voltage conversion module converts the 24V dc output by the train storage battery or the energy storage module into 24V dc, the maximum current of the converted dc is 4A, and the amplitude deviation of the converted dc can be about 24V ± 1V, so as to ensure the normal operation of such on-board equipment.
According to the technical scheme, the power supply control module is arranged in the train monitoring system, the module controls the direct current output by the train storage battery or the energy storage module to be transmitted to the voltage conversion module according to the first power supply voltage output by the train storage battery and the second power supply voltage output by the energy storage module, and therefore the abnormal condition of the train monitoring system or the vehicle-mounted equipment caused by the abnormal voltage in the direct current output by the train storage battery or the energy storage module is avoided.
It can be understood that, according to different requirements of the train monitoring system and the on-board device on the power supply voltage, the control process of the power supply control module for controlling the output of the direct current to the voltage conversion module based on the first power supply voltage and the second power supply voltage may also be different. To facilitate understanding of the above embodiments, a case is exemplified. For example, referring to fig. 2, the present application provides a power supply control module, when controlling to transmit the dc power output by the train storage battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage, the implementation process includes steps S201 to S203. Wherein:
s201: and if the first power supply voltage is within the set voltage threshold range, the direct current output by the train storage battery is transmitted to the voltage conversion module.
It should be noted that the voltage threshold range corresponding to the first power supply voltage output by the train storage battery is designed according to the locomotive power standard, that is, the first power supply voltage output by the train storage battery needs to meet the voltage threshold range of the locomotive power standard. The voltage threshold range is set according to 70% -125% of the first power supply voltage, if the first power supply voltage is 24V, the voltage threshold range of the first power supply voltage is 24 x 70% -24 x 125%, namely 16.8V-30V, according to the setting process, and the voltage converted by the voltage conversion module in the voltage threshold range can meet the power supply voltage required by a train monitoring system or vehicle-mounted equipment.
Designers can also optimize individual modules, etc., to enable the voltage conversion module to work properly at smaller or larger voltages, for example: after related circuits such as the power supply control module and the voltage conversion device are optimized, when the first power supply voltage is 24V, the voltage conversion module can normally work under the condition that the voltage threshold range is 14V-32V.
It should be noted that the energy storage module is a standby power supply module for emergency, so that when the train storage battery and the energy storage module are simultaneously supplied with the same voltage, the priority of power supply of the energy storage module is lower than that of the train storage battery.
And judging the first power supply voltage and the second power supply voltage according to the voltage threshold range, and transmitting the direct current output by the train storage battery to the voltage conversion module when the first power supply voltage is within the set voltage threshold range and no matter whether the second power supply voltage is within the voltage threshold range.
For example: when the first power supply voltage is 24V, the set voltage threshold range is 16.8V-30V, and the set voltage threshold range is within the voltage threshold range, the direct current output by the train storage battery is transmitted to the voltage conversion module.
In addition, when the direct current output by the train storage battery is transmitted to the voltage conversion module, the train storage battery can also charge the energy storage module, so that the energy storage module can provide required power supply voltage for the train monitoring system and part of vehicle-mounted equipment when the train storage battery is powered off due to emergency.
S202: and if the second power supply voltage is within the preset voltage threshold range and the first power supply voltage is not within the voltage threshold range, transmitting the direct current output by the energy storage module to the voltage conversion module.
And when the first power supply voltage is not in the voltage threshold range, judging whether the second power supply voltage is in a preset voltage threshold range, and if the second power supply voltage is in the voltage threshold range, transmitting the direct current output by the energy storage module to the voltage conversion module.
S203: and if the first power supply voltage and the second power supply voltage are not in the voltage threshold range, the direct current output from the train storage battery or the energy storage module to the voltage conversion module is controlled to be interrupted.
It should be noted that, the first power supply voltage and the second power supply voltage are not within the voltage threshold range, which indicates that the train storage battery or the energy storage module is in an undervoltage state or an overvoltage state, and in order to ensure the safety of each circuit and each module, the direct current output from the train storage battery or the energy storage module to the voltage conversion module is interrupted.
The step S203 is an optional step, and is intended to reduce the voltage instability of the dc power output by the train storage battery or the energy storage module, which may cause a failure of the train monitoring system due to abnormal power supply.
For example, as shown in table 1, table 1 shows a selection control table implemented by the power supply control module for the power supply according to the first power supply voltage and the second power supply voltage.
TABLE 1
In order to ensure that the current value output by the voltage conversion module can meet the current threshold range required by the train monitoring system, the power supply control module can also monitor the current value output by the voltage conversion module, and when the current value output by the voltage conversion module is not in the current threshold range, the output current protection is started. For example: the voltage conversion module is a DC converter converting DC24V to DC110V, and when the current value output by the DC converter is larger than the maximum value of the current threshold range, namely larger than 4.5A, the overcurrent protection is started.
The circuit composition structure of the power supply control module for realizing the control can have various possible forms. Illustrated in one case. For example, the power supply control module may be composed of a voltage acquisition circuit, a logic control circuit, and the like, and accordingly, the power supply control module controls the process of transmitting the direct current output by the train storage battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage, which is realized by the voltage acquisition circuit and the logic control circuit.
Referring to fig. 3, in one example, a specific implementation of the power supply control module includes:
and the voltage acquisition circuit 301 is connected with the train storage battery and the energy storage module and is used for acquiring a first power supply voltage and a second power supply voltage.
The power supply control module acquires a first power supply voltage output by the train storage battery and a second power supply voltage output by the energy storage module based on the voltage acquisition circuit.
The voltage acquisition circuit may be implemented in any manner, and is not limited herein.
And the logic control circuit 302 is connected with the voltage acquisition circuit and is used for controlling the direct current output by the train storage battery or the energy storage module to be transmitted to the voltage conversion module according to the first power supply voltage and the second power supply voltage.
The specific process of controlling the dc power output by the train storage battery or the energy storage module to be transmitted to the voltage conversion module by the logic control circuit according to the first power supply voltage and the second power supply voltage may refer to relevant steps of the foregoing embodiments, and will not be described in detail here.
It should be noted that the implementation manner of the logic control circuit may be any one, and is not particularly limited herein.
It can be understood that the train storage battery is powered on or powered off by plugging and unplugging a power key of the train, and the power key is used for controlling the connection and disconnection of the train storage battery and a high-voltage power supply line. When the train changes the driving direction, the electric key needs to be taken out from the cab in the current direction and inserted into the cab in the opposite direction. In the process, the power failure condition of the train storage battery can occur, and in order to ensure that the train monitoring system monitors the train in the process, the energy storage module supplies power to the train monitoring system.
The energy storage module is designed to maintain the power supply of the train monitoring system and part of vehicle-mounted equipment under the condition that the train storage battery is powered off. The time length for the energy storage module to maintain power supply to the train monitoring system and part of the vehicle-mounted equipment is related to the specific structure of the energy storage module.
In practical application, the energy storage module can be designed according to requirements, so that the energy storage module can maintain the required power supply duration, and the normal work of the train monitoring system and part of vehicle-mounted equipment in the power supply duration is ensured.
For example: the power supply time is 3 minutes.
In one example, to ensure reliable power supply, the energy storage module may consist of 2 lead-acid batteries connected in series.
The skilled person can also set the specific type and number of the batteries in the energy storage module according to different requirements of the power supply duration, which is not limited herein.
When the uninterruptible power supply system provided by the application is connected with a train storage battery, surge current may exist, and if the surge current flows into each module of the system, part of devices may be damaged.
To this end, the uninterruptible power supply system provided by the present application may further include: and the soft start circuit is connected with the power supply control module.
And the soft start circuit is used for inhibiting surge current in direct current output to the uninterruptible power supply system by the train storage battery.
It should be noted that the soft start circuit may be implemented in any manner, and is not limited herein.
The utility model provides an uninterrupted power system when obtaining the direct current from the train battery, probably still can have the conducted interference, for avoiding the influence of conducted interference to the direct current.
The uninterruptible power supply system provided by the present application may further include: and the filter is connected with the power supply control module.
And the filter is used for filtering the direct current output from the train storage battery to the uninterruptible power supply system.
It should be noted that the filter may be any implementation that satisfies the GB/T24338.4-2018 design document, which is not specifically described herein.
When the train is in the maintenance stage, the train monitoring system is not necessary for monitoring. At the moment, the train monitoring system does not have a power supply requirement, therefore, a corresponding control instruction can be generated according to the power supply requirement of the train monitoring system in the power supply control module, the connection between the power supply module and the train monitoring system is controlled through the control instruction, and when the power supply control module monitors that the train monitoring system does not need the power supply module to supply power, a disconnection instruction is generated to disconnect the connection between the power supply module and the train monitoring system. Through this mode can avoid the waste of electric energy resource, for this reason, the uninterrupted power source system that this application provided can also include:
and the first switch module is connected with the power supply control module. The first switch module is used for communicating the power supply module with the train storage battery.
Correspondingly, the power supply control module is also used for generating a first disconnection instruction under the condition that the train storage battery is not required to supply power to the train monitoring system is confirmed. The first disconnection instruction is used for indicating the first switch module to disconnect the connection between the power supply module and the train storage battery.
In this case, the first switch module is configured to disconnect the connection between the power supply control module and the train storage battery according to the first disconnection instruction.
Optionally, the system further comprises: and the second switch module is used for communicating the power supply control module with the energy storage module.
Similarly, the power supply control module is further configured to generate a second disconnect command upon determining that power is not required from the energy storage module to the train monitoring system.
Correspondingly, the second switching module is used for disconnecting the connection between the power supply control module and the energy storage module according to the second disconnection instruction.
It should be noted that the power supply control module may further generate a connection instruction based on the power supply voltage output by the power supply module to indicate the connection of the power supply module with the train monitoring system. For example: if the power supply voltage output by the train storage battery meets the power supply requirement of the train monitoring system, the power supply control module generates a first connection instruction, and instructs the first switch module to realize the connection between the power supply control module and the train storage battery according to the first connection instruction; and the power supply voltage output by the energy storage module meets the power supply requirement of the train monitoring system, then the power supply control module generates a second connection instruction, and instructs the second switch module to realize the connection between the power supply control module and the energy storage module according to the second connection instruction. In addition, there are many possible specific structural forms of the first switch module and the second switch module, which are not limited herein, for example: the first switch module and the second switch module may both be air switches.
The first switch module and the second switch module are in a connected state when the train monitoring system works normally, and are in a disconnected state when the train monitoring system does not work.
If the power supply control module selects the direct current output by the train storage battery to transmit to the voltage conversion module, when the train monitoring system does not work, the direct current output by the train storage battery is disconnected in a mode of disconnecting the first switch tube.
If the power supply control module selects the direct current output by the energy storage module to transmit to the voltage conversion module, when the train monitoring system does not work, the direct current output by the energy storage module is disconnected in a mode of disconnecting the second switch tube.
To more specifically explain the structure of the ups system provided by the present application, referring to fig. 4, fig. 4 shows a specific structural connection of the ups system provided by the present application applied to a train.
As can be seen from fig. 4, the train storage battery 401 is a power supply device externally connected to the uninterruptible power supply system;
the uninterruptible power supply system includes: a filter 402, a soft start circuit 403, a power supply control module 404, an energy storage module 405 and a voltage conversion module. In this embodiment, the voltage conversion module includes: the first voltage converter 406 and the second voltage converter 407 are illustrated as examples.
One end of the filter 402 is connected to the train battery, and the other end is connected to the soft start circuit 403. The soft start circuit 403 has one end connected to the filter 404 and the other end connected to the power supply control module 405.
The power supply control module 404 is connected to the soft start circuit, the energy storage module, and the voltage conversion module, respectively.
The filter 402 is used for filtering the dc power output from the train battery.
And a soft start circuit 403 for suppressing surge current in the dc power output from the train battery.
And the power supply control module 404 is configured to obtain a first power supply voltage output by a train battery on the train to the uninterruptible power supply system and a second power supply voltage output by the energy storage module, and control to transmit the direct current output by the train battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage.
And the energy storage module 405 is used for storing electric energy and outputting direct current to the voltage conversion module under the control of the power supply control module.
The first voltage converter 406 is configured to convert the input dc current into dc current having a first voltage value, so as to provide a required voltage value for the train monitoring system.
And a second voltage converter 407, configured to convert the input direct current into direct current with a second voltage value, so as to provide a required voltage value for the vehicle-mounted device.
The direct current output by the train storage battery needs to be filtered through a filter to remove conducted interference, the first power supply voltage with the conducted interference removed is output to a soft start circuit, and surge current in the first power supply voltage is removed through the function of suppressing the surge current of the soft start circuit; inputting the first power supply voltage with the surge current removed into a power supply control module; the power supply control module judges a voltage threshold value of the first power supply voltage and a second power supply voltage provided by the energy storage module, further selects power supply equipment suitable for the voltage conversion equipment to provide direct current from the train storage battery and the energy storage module, the power supply equipment outputs the direct current to the voltage conversion module, and after voltage conversion is carried out by the voltage conversion module, a first voltage value used for supplying power to the train monitoring system and a second voltage value used for supplying power to the vehicle-mounted equipment are obtained.
For make things convenient for managers to the maintenance work of uninterrupted power source system, the uninterrupted power source system that this application provided can also include:
and the undervoltage indicator lamp is arranged at an interface of the voltage conversion module for receiving the direct current, and is used for indicating that the corresponding voltage in the direct current output by the train storage battery or the energy storage module is smaller than the minimum value of the voltage threshold range.
And the overvoltage indicator lamp is arranged at an interface of the voltage conversion module for receiving the direct current, and is used for indicating that the corresponding voltage in the direct current output by the train storage battery or the energy storage module is greater than the maximum value of the voltage threshold range.
And the discharge indicator lamp is arranged at an output interface of the energy storage module for outputting the direct current, and is used for indicating the energy storage module to output the direct current to the voltage conversion module.
And the charging indicator lamp is arranged on a connecting line between the train storage battery and the energy storage module and is used for indicating the train storage battery to charge the energy storage module.
And the output protection indicator lamp is arranged at the input end and the output end of the voltage conversion module and is used for indicating that the voltage conversion module is in an input protection state or an output protection state.
And the input power supply indicator lamp is arranged at an interface of the voltage conversion module for receiving the direct current, and is used for indicating that the direct current output by the train storage battery or the energy storage module is within a voltage threshold range.
And the first output indicator lamp is arranged at an output port of the 24V-to-110V direct current converter and used for indicating that the first voltage value output by the voltage conversion module is normal.
And the second output indicator lamp is arranged at an output port of the 24V-to-24V direct current converter and used for indicating that the second power supply voltage output by the voltage conversion module is normal.
It can be understood that, a manager can judge the current working state of the uninterruptible power supply system according to the above indication lamps, and can maintain the fault node of the uninterruptible power supply system according to the indication of the indication lamps.
The uninterruptible power supply system provided by the present application may further include:
and the heat dissipation device is arranged at the side of the voltage conversion module and used for dissipating heat of the voltage conversion module.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the 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.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An uninterruptible power supply system applied to a train, comprising:
the power supply control module, the energy storage module connected with the power supply control module, and the voltage conversion module connected with the power supply control module;
the power supply control module is used for obtaining a first power supply voltage output by a train storage battery on a train to the uninterruptible power supply system and a second power supply voltage output by the energy storage module, and controlling to transmit direct current output by the train storage battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage;
the voltage conversion module is used for converting the input direct current into direct current with a first voltage value, and transmitting the direct current with the first voltage value to the train monitoring system on the train, wherein the first voltage value is a voltage value required by the train monitoring system on the train;
the power supply control module is specifically configured to, when controlling to transmit the direct current output by the train storage battery or the energy storage module to the voltage conversion module according to the first power supply voltage and the second power supply voltage:
if the first power supply voltage is within a set voltage threshold range, transmitting the direct current output by the train storage battery to the voltage conversion module;
if the second power supply voltage is within a preset voltage threshold range and the first power supply voltage is not within the voltage threshold range, transmitting the direct current output by the energy storage module to the voltage conversion module;
the power supply control module is further configured to: and when the first power supply voltage and the second power supply voltage are not in the voltage threshold range, controlling to interrupt the direct current output from the train storage battery or the energy storage module to the voltage conversion module.
2. The system of claim 1, wherein the voltage conversion module is further configured to convert the input dc power to dc power having a second voltage value, the second voltage value being a voltage value required by the onboard equipment on the train.
3. The system according to claim 1, characterized in that the power supply control module comprises in particular:
the voltage acquisition circuit is connected with the train storage battery and the energy storage module and is used for acquiring the first power supply voltage and the second power supply voltage;
and the logic control circuit is connected with the voltage acquisition circuit and is used for controlling the direct current output by the train storage battery or the energy storage module to be transmitted to the voltage conversion module according to the first power supply voltage and the second power supply voltage.
4. The system of claim 1, wherein the energy storage module consists of 2 lead acid batteries connected in series.
5. The system of claim 1, further comprising: the soft start circuit is connected with the power supply control module;
and the soft start circuit is used for inhibiting surge current in direct current output to the uninterruptible power supply system by the train storage battery.
6. The system of claim 1, further comprising: the filter is connected with the power supply control module;
and the filter is used for filtering the direct current output by the train storage battery to the uninterruptible power supply system.
7. The system of claim 1, wherein the power control module is further configured to generate a first disconnect command upon confirming that power to the train monitoring system from the train battery is not required;
the system further comprises: a first switch module for connecting the power supply control module with the train battery;
the first switch module is used for disconnecting the connection between the power supply control module and the train storage battery according to the first disconnection instruction.
8. The system of claim 1, wherein the power control module is further configured to generate a second disconnect command upon determining that power is not required from the energy storage module to the train monitoring system;
the system further comprises: the second switch module is used for communicating the power supply control module with the energy storage module;
and the second switching module is used for disconnecting the connection between the power supply control module and the energy storage module according to the second disconnection instruction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010124890.2A CN110970994A (en) | 2020-02-27 | 2020-02-27 | Uninterrupted power system applied to train |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010124890.2A CN110970994A (en) | 2020-02-27 | 2020-02-27 | Uninterrupted power system applied to train |
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Application publication date: 20200407 |