CN113131577A

CN113131577A - Train charging control method and train charging control device

Info

Publication number: CN113131577A
Application number: CN202110420494.9A
Authority: CN
Inventors: 方小刚
Original assignee: Beijing Dinghan Technology Group Co Ltd
Current assignee: Beijing Dinghan Technology Group Co Ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-07-16

Abstract

The invention discloses a train charging control method and a train charging control device. The train storage battery charging control method comprises the following steps: acquiring storage battery charging voltage, wherein the storage battery charging voltage comprises storage battery input voltage and/or charger output voltage; determining the charging state of the storage battery according to the charging voltage of the storage battery, wherein the charging state of the storage battery comprises an undervoltage state, a normal state and an overvoltage state; controlling the charging state of a charger according to the charging state of the storage battery, wherein the charging state of the charger comprises a power supply state and a shutdown state; when the charging state of the storage battery is an overvoltage state, the charger is controlled to be in a shutdown state. The invention provides a train charging control method and a train charging control device, which solve the problem that a storage battery is damaged due to overcharge in the prior art and meet the performance requirement of improving the train running safety.

Description

Train charging control method and train charging control device

Technical Field

The embodiment of the invention relates to the technical field of railway vehicle systems, in particular to a train charging control method and a train charging control device.

Background

At the present stage, a train storage battery and a charger are two independent units, the storage battery unit is only provided with a power switch and a safety for protection, and a control feedback link is not provided, the charger unit product has a voltage and current control feedback link, but when the control link of the charger fails, the output voltage of the charger is higher, the storage battery is overcharged, and the driving safety is influenced. At present, only manual maintenance is carried out after a fault occurs, and no better accident-avoiding preventive measures and equipment are provided, so that the problem of overcharge and damage of the storage battery is thoroughly solved, and urgent need is brought to the safe operation of a vehicle.

Disclosure of Invention

The invention provides a train charging control method and a train charging control device, which are used for solving the problem that a storage battery is damaged due to overcharging in the prior art and achieving the performance requirement of improving the train running safety.

In a first aspect, an embodiment of the present invention provides a train storage battery charging control method, including:

acquiring storage battery charging voltage, wherein the storage battery charging voltage comprises storage battery input voltage and/or charger output voltage;

determining the charging state of the storage battery according to the charging voltage of the storage battery, wherein the charging state of the storage battery comprises an undervoltage state, a normal state and an overvoltage state;

controlling the charging state of a charger according to the charging state of the storage battery, wherein the charging state of the charger comprises a power supply state and a shutdown state;

wherein, according to battery charge state control the machine charge state includes:

when the charging state of the storage battery is the under-voltage state, controlling the charger to be in the power supply state; when the charging state of the storage battery is the normal state, controlling the charger to be in the power supply state; and when the charging state of the storage battery is the overvoltage state, controlling the charger to be in the shutdown state.

Optionally, the controlling the charger to be in the shutdown state includes:

cutting off a control circuit of the charger; and/or cutting off a main circuit of the storage battery.

Optionally, when controlling the charging state of the charger according to the charging state of the storage battery, the method further includes:

and indicating according to the charging state of the storage battery.

and storing the charging voltage of the storage battery according to the charging state of the storage battery.

In a second aspect, an embodiment of the present invention further provides a train storage battery charging control apparatus, including a sampling module, a control module, and a relay module;

the sampling module is respectively connected with the integrated control cabinet and the control module; the control module is connected with the relay module;

the sampling module is used for acquiring storage battery charging voltage through the comprehensive control cabinet, and the storage battery charging voltage comprises storage battery input voltage and/or charger output voltage;

the control module is used for determining the charging state of the storage battery according to the charging voltage of the storage battery, and the charging state of the storage battery comprises an undervoltage state, a normal state and an overvoltage state;

the relay module is used for controlling the charging state of a charger according to the charging state of the storage battery, and the charging state of the charger comprises a power supply state and a shutdown state;

the relay module is further used for controlling the charger to be in the power supply state when the charging state of the storage battery is the undervoltage state; when the charging state of the storage battery is the normal state, controlling the charger to be in the power supply state; and when the charging state of the storage battery is the overvoltage state, controlling the charger to be in the shutdown state.

Optionally, the sampling module includes an under-voltage sampling circuit and an over-voltage sampling circuit; the control module comprises a first operational amplifier, a second operational amplifier, a first switch unit and a second switch unit; the relay module comprises an undervoltage relay and an overvoltage relay;

the undervoltage sampling circuit is respectively connected with the integrated control cabinet and the first operational amplifier; the first switch unit is respectively connected with the first operational amplifier and the undervoltage relay; the overvoltage sampling circuit is respectively connected with the integrated control cabinet and the second operational amplifier; the second switch unit is connected with the second operational amplifier and the overvoltage relay respectively.

Optionally, the train storage battery charging control device further includes a processing module, the processing module is connected to the sampling module, and the processing module is configured to determine the charging state of the storage battery according to the storage battery charging voltage;

the processing module is further used for storing the charging voltage of the storage battery according to the charging state of the storage battery, and/or the processing module is connected with the relay module and is further used for controlling the charging state of the charger according to the charging state of the storage battery.

Optionally, the train storage battery charging control device further includes an indication module, and the indication module is connected with the relay module;

the relay module is also used for controlling the indicating module to indicate according to the charging state of the storage battery.

In a third aspect, the embodiment of the invention further provides a train storage battery charging control device, which comprises a storage battery charging voltage detection sensor, a PLC control module and a control relay;

the storage battery charging voltage detection sensor is respectively connected with the integrated control cabinet and the PLC control module, the PLC control module is connected with the control relay, and the control relay is connected in series in a control circuit loop of the charger;

the storage battery charging voltage detection sensor is used for acquiring storage battery charging voltage through the comprehensive control cabinet, the storage battery charging voltage comprises storage battery input voltage and/or charger output voltage,

the PLC control module is used for determining the charging state of the storage battery according to the charging voltage of the storage battery and controlling the on and off of the control relay according to the charging state of the storage battery so as to control the charging state of the charger, wherein the charging state of the storage battery comprises an under-voltage state, a normal state and an over-voltage state, and the charging state of the charger comprises a power supply state and a shutdown state;

the PLC control module is also used for controlling the control relay to be conducted when the charging state of the storage battery is the undervoltage state, so that the charger is in the power supply state; when the charging state of the storage battery is the normal state, controlling the control relay to be conducted so as to enable the charger to be in the power supply state; and when the charging state of the storage battery is the overvoltage state, the control relay is controlled to be disconnected, so that the charger is in the shutdown state.

In a fourth aspect, the embodiment of the invention further provides a train storage battery charging control device, which is characterized by comprising a voltage detection module and an on-off module;

the voltage detection module is respectively connected with the input end of the storage battery and the on-off module, and the on-off module is connected in series with a main loop of the storage battery;

the voltage detection module is used for acquiring storage battery charging voltage and determining a storage battery charging state according to the storage battery charging voltage, wherein the storage battery charging voltage comprises storage battery input voltage and/or charger output voltage, and the storage battery charging state comprises an undervoltage state, a normal state and an overvoltage state;

the voltage detection module is also used for controlling the on-off of the on-off module according to the charging state of the storage battery so as to control the charging state of a charger, and the charging state of the charger comprises a power supply state and a shutdown state;

the voltage detection module is further used for controlling the on-off module to be conducted when the charging state of the storage battery is the undervoltage state, so that the charger is in the power supply state; when the charging state of the storage battery is the normal state, controlling the on-off module to be conducted so as to enable the charger to be in the power supply state; and when the charging state of the storage battery is the overvoltage state, the on-off module is controlled to be disconnected, so that the charger is in the shutdown state.

According to the train storage battery charging control method provided by the embodiment of the invention, the charging state of the storage battery is determined according to the charging voltage of the storage battery by acquiring the charging voltage of the storage battery, and the charger is controlled to be in the power supply state and the shutdown state according to the charging state of the storage battery, so that when the storage battery is in the undervoltage state and the normal state, the charger is controlled to be in the power supply state to charge the storage battery, and therefore, when a train is in an emergency working condition, the storage battery can be ensured to supply power for an emergency; when the storage battery is in an overvoltage state, the charger is controlled to be in a stop state, so that the charger stops charging the storage battery, the storage battery is prevented from being damaged due to the fact that the charger is out of control, the problem that the storage battery is charged and exploded due to the fact that the storage battery and the charger are mutually independent and a control feedback link is not available in the prior art and the storage battery is overcharged due to the fact that the output voltage of the charger is too high when the control link of the charger is invalid is solved, and train running safety is improved.

Drawings

Fig. 1 is a schematic flow chart of a train battery charging control method according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a train storage battery charging control device according to an embodiment of the present invention;

fig. 3 is a schematic working flow chart of a train storage battery charging control device according to an embodiment of the present invention;

fig. 4 is a logic diagram of a train battery charging control device according to an embodiment of the present invention;

fig. 5 is a schematic wiring diagram of a train battery charging control device according to an embodiment of the present invention;

fig. 6 is an installation schematic diagram of a train storage battery charging control device according to an embodiment of the present invention;

FIG. 7 is a logic diagram of another train battery charging control apparatus according to an embodiment of the present invention;

fig. 8 is a schematic working flow chart of another train battery charging control device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic flow chart of a train storage battery charging control method provided in an embodiment of the present invention, and as shown in fig. 1, the train storage battery charging control method provided in the embodiment of the present invention includes:

s110, acquiring the charging voltage of the storage battery, wherein the charging voltage of the storage battery comprises the input voltage of the storage battery and/or the output voltage of a charger.

The storage battery of the train is mainly used for supplying power to emergency loads on the train under emergency working conditions (for example, emergency working conditions such as train failure and parking), wherein the emergency loads are loads which need to consume electric quantity under the emergency working conditions.

The charger is an auxiliary power supply device used on locomotives, motor trains, vehicles and related facilities (hereinafter, referred to as trains) for supplying power by using storage batteries, and is an essential device particularly for internal combustion/electric motor train units, internal combustion/electric locomotives and various passenger vehicles.

After the charger is started, the input DC110V/DC600V/AC220/AC 38050 HZ alternating current can be converted into direct current (DC24V/DC48V/DC72V/DC110V) through treatment such as rectification, inversion and transformation, so as to supply power for train loads such as direct current equipment on a train. Meanwhile, the charger and the storage battery are always connected through the connector, and the storage battery can be charged after the charger is started, so that when the train is in an emergency working condition, the storage battery can supply power for emergency loads, and the normal operation of the emergency loads on the train is ensured.

The charging voltage of the storage battery refers to the charging voltage of the charger for charging the storage battery at the current moment, and in this embodiment, by acquiring the charging state of the storage battery at the current moment of the charging voltage of the storage battery, specifically, different charging voltages of the charger to the storage battery respectively correspond to different charging states of the storage battery, the charging state of the storage battery is determined by acquiring the charging voltage of the storage battery in real time and determining the charging state of the storage battery based on the charging voltage of the storage battery, so that measures corresponding to the charging state of the storage battery can be taken in real time later, the charger is prevented from overcharging the storage battery, and the driving safety is.

The storage battery charging voltage sampling can be obtained by detecting the input voltage of the storage battery and/or the output voltage of the charger, and the technical personnel in the field can set the sampling according to actual requirements.

And S120, determining the charging state of the storage battery according to the charging voltage of the storage battery, wherein the charging state of the storage battery comprises an undervoltage state, a normal state and an overvoltage state.

Specifically, different charging voltages of the charger to the storage battery respectively correspond to different charging states of the storage battery, wherein when the charging voltage of the storage battery is lower than a rated voltage, the charging state of the storage battery is an undervoltage state; when the charging voltage of the storage battery reaches the rated voltage, the charging state of the storage battery is a normal state; when the charging voltage of the storage battery exceeds the rated voltage, the charging state of the storage battery is an overvoltage state, and the storage battery is overcharged at the moment, so that the possibility of charging and exploding the storage battery is caused, and the driving safety is influenced.

In the present embodiment, the state of charge of the storage battery can be determined by setting a threshold voltage, and comparing the storage battery charge voltage with the threshold voltage.

Optionally, in order to avoid misjudgment caused by unstable charging voltage of the storage battery, the duration time may be set as an auxiliary judgment standard.

Illustratively, the battery charging voltage is set to be V0, the first threshold voltage is set to be V1, the second threshold voltage is set to be V2, and the third threshold voltage is set to be V3. Determining the battery state of charge from the battery charging voltage, comprising:

when V0 is less than V1 and the duration is longer than a first preset time, determining that the storage battery state is the undervoltage state; when V2 is not less than V0 is not less than V3 and the duration time is longer than a second preset time, determining that the storage battery state is the normal state; when V0 > V3, and the duration is greater than a third preset time, determining that the battery condition is the over-voltage condition.

The first threshold voltage V1, the second threshold voltage V2, the third threshold voltage V3, the first preset time, the second preset time and the third preset time may be set according to a rated voltage and an emergency degree of the battery. For example, setting 90V ≦ V1 ≦ 92V, 96V ≦ V2 ≦ 98V, 123V ≦ V3 ≦ 125V, exemplarily, V1 ≦ 91V, V2 ≦ 97V, and V3 ≦ 124V, that is, when V0 < 91V and the duration is greater than the first preset time, determining that the battery state is an under-voltage state; when the 97V is more than or equal to V0 and less than or equal to 124V and the duration time is longer than a second preset time, determining that the state of the storage battery is a normal state; and when the V0 is more than 124V and the duration is more than a third preset time, determining that the battery state is an overvoltage state.

In addition, the first preset time can be set within 10min, for example, the first preset time is set within 5-10 min or 5min, even 1-2 min, and the like; the second preset time can be set within 15min or above 15min, for example, the second preset time is set to be 5-15 min and the like; when the storage battery is in an overvoltage state, the storage battery is overcharged, so that the possibility of charging and exploding the storage battery is caused, and the driving safety is influenced, therefore, the third preset time can be set within 2min, for example, the second preset time is set to be 1-2 min, even 5-10 s and the like, so that the driving safety is ensured; the method can be set by a person skilled in the art according to actual needs, and the embodiment of the invention is not limited thereto.

And S130, controlling the charging state of a charger according to the charging state of the storage battery, wherein the charging state of the charger comprises a power supply state and a shutdown state.

The power supply state refers to a state that the charger charges the storage battery, and the shutdown state refers to a state that the charger stops charging the storage battery.

In the embodiment, the charging state of the charger is controlled according to the charging state of the storage battery, so that the storage battery is prevented from being damaged due to overcharging. Specifically, when the charging state of the storage battery is an undervoltage state, the charger is controlled to be in a power supply state, at the moment, the charger charges the storage battery, and meanwhile, the charger is also used for supplying power to a train load; when the charging state of the storage battery is a normal state, controlling a charger to be in a power supply state, maintaining the charging voltage of the storage battery by the charger at the moment, and simultaneously supplying power to a train load by the charger; when the charging state of the storage battery is an overvoltage state, the charger is out of control possibly, so that the output voltage of the charger obviously exceeds the rated voltage of the storage battery, the storage battery is charged and exploded due to overcharging of the storage battery, the possibility of fire and smoke is caused, and the driving safety is influenced.

According to the train storage battery charging control method provided by the embodiment of the invention, the charging voltage of the storage battery is obtained through sampling, the charging state of the storage battery is determined according to the charging voltage of the storage battery, and the charger is controlled to be in the power supply state and the shutdown state according to the charging state of the storage battery, so that when the storage battery is in the undervoltage state and the normal state, the charger is controlled to be in the power supply state to charge the storage battery, and therefore when a train is in an emergency working condition, the storage battery can be ensured to supply power for an; when the storage battery is in an overvoltage state, the charger is controlled to be in a stop state, so that the charger stops charging the storage battery, the storage battery is prevented from being damaged due to the fact that the charger is out of control, the problem that in the prior art, the storage battery and the charger are independent of each other, a linkage control feedback link is omitted, when a control link of the charger fails, the storage battery is overcharged due to the fact that the output voltage of the charger is too high, and therefore the storage battery is charged and exploded is solved, and train running safety is improved.

Optionally, the controlling the charger to be in the shutdown state includes:

The control power supply required by the charger control circuit is required when the charger is started, so that when the storage battery is in an overvoltage state, the input of the control power supply is cut off by cutting off a control electric loop of the charger, the charger stops voltage output, the charger is controlled to be in a stop state, and the storage battery is protected.

Optionally, when the storage battery is in an overvoltage state, the main circuit of the storage battery can be cut off to cut off the input voltage of the storage battery, so that the charger stops charging the storage battery, the storage battery is protected, the service life of a product at a load end is prolonged, and train running safety is improved.

and indicating according to the charging state of the storage battery.

The charging state and the real-time voltage of the storage battery are indicated, so that a crew member and an overhaul staff can find out hidden troubles in time, the hidden troubles can be eliminated in advance, and the overcharge damage of the storage battery is avoided.

It should be noted that, the charging state of the storage battery can be indicated by sound, light or other forms, and those skilled in the art can arbitrarily set the charging state according to actual needs.

For example, the battery charge state is indicated by indicator lights of different colors. Illustratively, when the charging state of the storage battery is an undervoltage state, a yellow indicator lamp is turned on; when the charging state of the storage battery is a normal state, the green indicator light is on; when the charging state of the storage battery is an overvoltage state, the red indicator light is turned on; therefore, crews and maintainers can find the hidden trouble in time according to the colors of the indicator lights, and then remove the hidden trouble in advance, thereby avoiding the overcharge damage of the storage battery.

In other embodiments, a person skilled in the art may set the indication color and the indication form of the indicator light according to actual requirements, for example, the indicator light is set to flash at different frequencies to indicate the charging state of the storage battery, in other embodiments, the charging state of the storage battery may also be prompted by voice, which is not limited in the embodiments of the present invention.

The storage battery charging state is stored, so that crew members and maintainers can conveniently and timely acquire the storage battery charging state information, the potential fault hazard can be conveniently eliminated, and the storage battery is prevented from being damaged by overcharging.

In particular, the battery state of charge information may be stored by a memory, wherein the memory may include a high speed random access memory, and may further include a non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid state storage device.

Optionally, the memory may output the battery charging status information through a wired or wireless interface, so that a crew member and an overhaul crew member can read the battery charging status information stored in the memory; for example, the memory outputs the battery charge state information through the USB data interface.

Optionally, the storage battery charging state information may include data information such as a storage battery charging voltage value, a storage battery charging state switching time, and a charging state such as a storage battery charging state duration, and a fault, and those skilled in the art may set the charging state information according to actual requirements.

Illustratively, when the battery state of charge is an under-voltage state, the battery state of charge information is stored; when the charging state of the storage battery is in a normal state, the information of the charging state of the storage battery is not stored; when the charging state of the storage battery is an overvoltage state, storing the charging state information of the storage battery; therefore, a crew member and an overhaul member can read the charge state information of the storage battery when the storage battery is under-voltage or over-voltage, the hidden trouble of the storage battery can be eliminated more accurately, and the storage battery is prevented from being damaged.

It should be noted that, in other embodiments, when the state of charge of the storage battery is in a normal state, the storage battery state of charge information may also be stored, which is not limited in the embodiments of the present invention.

Based on the same inventive concept, an embodiment of the present invention further provides a train storage battery charging control device, where the train storage battery charging control device is configured to execute the train storage battery charging control method according to any embodiment of the present invention, and therefore, the train storage battery charging control device provided in the embodiment of the present invention has the technical effects of the technical solutions in any embodiment, and explanations of structures and terms that are the same as or correspond to those in the embodiments are not repeated herein.

Fig. 2 is a schematic structural diagram of a train storage battery charging control device according to an embodiment of the present invention, fig. 3 is a schematic working flow diagram of the train storage battery charging control device according to the embodiment of the present invention, fig. 4 is a schematic logic diagram of the train storage battery charging control device according to the embodiment of the present invention, fig. 5 is a schematic wiring diagram of the train storage battery charging control device according to the embodiment of the present invention, fig. 6 is a schematic installation diagram of the train storage battery charging control device according to the embodiment of the present invention, as shown in fig. 2 to 6, the train storage battery charging control device 10 according to the embodiment of the present invention includes a sampling module 11, a control module 12, and a relay module 13, the sampling module 11 is respectively connected to a comprehensive control cabinet 14 and the control module 12, and the control module 12 is connected to the relay module 13. The sampling module 11 is configured to obtain a charging voltage of the storage battery through the integrated control cabinet 14, where the charging voltage of the storage battery includes a storage battery input voltage and/or a charger output voltage; the control module 12 is configured to determine a charging state of the storage battery according to the charging voltage of the storage battery, where the charging state of the storage battery includes an undervoltage state, a normal state, and an overvoltage state; the relay module 13 is configured to control a charging state of the charger according to a charging state of the storage battery, where the charging state of the charger includes a power supply state and a shutdown state. The relay module 13 is further configured to control the charger 15 to be in a power supply state when the charging state of the storage battery is an undervoltage state; when the charging state of the storage battery is a normal state, controlling the charger 15 to be in a power supply state; and when the charging state of the storage battery is an overvoltage state, controlling the charger 15 to be in a stop state.

Specifically, as shown in fig. 2 to 6, the integrated control cabinet 14 is an intelligent integrated control cabinet integrating functional units such as power conversion control, air conditioning unit control, and lighting control; the charger 15 is connected with train loads such as the storage battery 16 and the like through the comprehensive control cabinet 14, so that the charger 15 supplies power to the train loads while charging the storage battery 16; the storage battery 16 can also be connected with a train load through the integrated control cabinet 14, for example, connected to a full-train bus through an anti-reverse diode, so as to supply power under emergency conditions (for example, emergency conditions such as train failure and parking); meanwhile, the integrated control cabinet 14 is also used for performing centralized processing on the charger and the storage battery sampling and control signals.

The sampling module 11 is connected with the integrated control cabinet 14 to obtain the charging voltage of the storage battery through the integrated control cabinet 14. For example, as shown in fig. 2 to 6, taking the example that the charging voltage of the battery includes the output voltage of the charger as an example, the output end OUT + and the input end OUT-of the charger 15 form an output loop of the charger 15, a transmission line corresponding to the output loop of the charger 15 includes a positive battery sampling line D + and a negative battery sampling line-110, and the sampling module 11 may detect the output voltage of the charger through the positive battery sampling line D + and the negative battery sampling line-110 to obtain the charging voltage of the battery.

With continued reference to fig. 2-6, the control module 12 is connected to the sampling module 11 for determining a battery state of charge based on the battery charge voltage, the battery state of charge including an undervoltage state, a normal state, and an overvoltage state. Specifically, the charger 15 respectively corresponds to different charging states of the storage battery 16 for different charging voltages of the storage battery 16, wherein when the charging voltage of the storage battery is lower than a rated voltage, the charging state of the storage battery is an undervoltage state; when the charging voltage of the storage battery reaches the rated voltage, the charging state of the storage battery is a normal state; when the charging voltage of the storage battery exceeds the rated voltage, the charging state of the storage battery is an overvoltage state, and the storage battery is overcharged at the moment, so that the possibility of charging and exploding the storage battery is caused, and the driving safety is influenced.

With continued reference to fig. 2-6, the relay module 13 is coupled to the control module 12 for controlling the charging state of the charger, including a power supply state and a shutdown state, based on the battery charging state. Specifically, when the charging state of the storage battery is an undervoltage state, the relay module 13 controls the charger 15 to be in a power supply state, at this time, the charger 15 charges the storage battery 16, and meanwhile, the charger 15 is also used for supplying power to a train load; when the charging state of the storage battery is a normal state, controlling the charger 15 to be in a power supply state, wherein at the moment, the charger 15 maintains the charging voltage of the storage battery 16, and meanwhile, the charger 15 is also used for supplying power to a train load; when the charging state of the storage battery is an overvoltage state, the charger 15 is controlled to be in a stop state, at the moment, the charger 15 may be out of control, so that the output voltage of the charger 15 obviously exceeds the rated voltage of the storage battery, the possibility of explosion of the storage battery 16 caused by overcharging the storage battery 16 exists, and the driving safety is influenced, and the charger 15 stops charging the storage battery 16 by controlling the charger 15 to be in the stop state, so that the storage battery 16 is protected, the storage battery 16 is prevented from being damaged due to overcharging, and the performance requirement of improving the driving safety of a train is met.

With continued reference to fig. 2-6, optionally, sampling module 11 includes an under-voltage sampling circuit 111 and an over-voltage sampling circuit 112; the control module 12 includes a first operational amplifier 121, a second operational amplifier 122, a first switching unit 123, and a second switching unit 124; the relay module 13 includes an undervoltage relay 131 and an overvoltage relay 132. The undervoltage sampling circuit 111 is respectively connected with the integrated control cabinet 14 and the first operational amplifier 121; the first switching unit 123 is connected to the first operational amplifier 121 and the undervoltage relay 131, respectively; the overvoltage sampling circuit 132 is respectively connected with the integrated control cabinet 14 and the second operational amplifier 122; the second switching unit 124 is connected to the second operational amplifier 122 and the overvoltage relay 132, respectively.

Specifically, as shown in fig. 2 to 6, the undervoltage sampling circuit 111 and the overvoltage sampling circuit 112 are configured to obtain a charging voltage of the storage battery through the integrated control cabinet 14, the first operational amplifier 121 compares the undervoltage sampling voltage output by the undervoltage sampling circuit 111 with a first reference voltage Vref1, and outputs a first comparison voltage to the first switch unit 123, and the first switch unit 123 is turned on or off according to the first comparison voltage, so as to control the on and off of the undervoltage relay 131; the second operational amplifier 122 compares the over voltage sampling voltage outputted from the over voltage sampling circuit 112 with a second reference voltage Vref2 and outputs the second comparison voltage to the second switching unit 124, and the second switching unit 124 is turned on or off according to the second comparison voltage, thereby controlling the turn-on and turn-off of the over voltage relay 132.

Wherein the first reference voltage Vref1 and the second reference voltage Vref2 may be set according to the first threshold voltage V1, the second threshold voltage V2, and the third threshold voltage V3; the first switch unit 123 and the second switch unit 124 may employ a transistor, a field effect transistor, or the like; the first operational amplifier 121 and the second operational amplifier 122 may be integrated operational amplifiers to reduce the occupied space, and those skilled in the art can set the operational amplifiers according to actual requirements.

For example, as shown in fig. 2 to 6, taking the first switching unit 123 and the second switching unit 124 both being NPN-type triodes as an example, the base of the first switching unit 123 is connected to the output terminal of the first operational amplifier 121, the collector of the first switching unit 123 is connected to the undervoltage relay 131, and the emitter of the first switching unit 123 is grounded (not shown in the figure); the base of the second switching unit 124 is connected to the output terminal of the second operational amplifier 122, the collector of the second switching unit 124 is connected to the overvoltage relay 132, and the emitter of the second switching unit 124 is grounded (not shown). When the charging state of the storage battery is an undervoltage state, the first switch unit 123 is turned on according to the first comparison voltage output by the first operational amplifier 121, so as to control the undervoltage relay 131 to operate, at this time, the overvoltage relay 132 does not operate, the charger 15 is in a power supply state, and the charger 15 charges the storage battery 16 and supplies power to the train load; when the charging state of the storage battery is a normal state, the first switching unit 123 is turned off according to the first comparison voltage output by the first operational amplifier 121, so that the undervoltage relay 131 does not operate, at this time, the overvoltage relay 132 does not operate, the charger 15 is in a power supply state, and the charger 15 charges the storage battery 16 and supplies power to a train load; when the charging state of the storage battery is an overvoltage state, the second switch unit 124 is turned on according to the second comparison voltage output by the second operational amplifier 122, so as to control the overvoltage relay 132 to operate, at this time, the undervoltage relay 131 does not operate, the charger 15 is in a shutdown state, so as to stop charging the storage battery 16, thereby protecting the storage battery 16, avoiding the storage battery 16 from being damaged due to overcharging, and achieving the performance requirement of improving the train running safety.

The relay action refers to a relay switching state, for example, if the relay is originally in an on state, the relay is switched to an off state after the relay action, and vice versa.

Optionally, the overvoltage relay 132 may be connected in series in the control circuit of the charger 15, or in series in the main circuit of the storage battery 16, and the overvoltage relay 132 is normally in a conducting state, when the charging state of the storage battery is in an overvoltage state, the overvoltage relay 132 acts (i.e., the overvoltage relay 132 is turned off), so that the charging machine 15 stops charging the storage battery 16 by cutting off the control circuit of the charger 15, or the main circuit of the storage battery 16 is cut off, the storage battery 16 is protected, the service life of a product at a load end is prolonged, and the driving safety of a train is improved.

For example, as shown in fig. 2, the overvoltage relay 132 is connected in series between the charger control electrical input and the charger control electrical output of the integrated control cabinet 14, and when the charging state of the storage battery is an overvoltage state, the overvoltage relay 132 is activated (i.e., the overvoltage relay 132 is turned off), so that the charger 15 stops charging the storage battery 16 and protects the storage battery 16 by cutting off the control electrical loop of the charger 15.

With reference to fig. 2, optionally, the train storage battery charging control apparatus 10 according to the embodiment of the present invention further includes a processing module 17, where the processing module 17 is connected to the sampling module 11, and the processing module 17 is configured to determine a storage battery charging state according to the storage battery charging voltage. The processing module 17 is further configured to store the charging voltage of the storage battery according to the charging state of the storage battery, and/or the processing module 17 is connected to the relay module 13, and the processing module 17 is further configured to control the charging state of the charger according to the charging state of the storage battery.

As shown in fig. 2, the processing module 17 is configured to perform program control and data processing, specifically, the processing module 17 is connected to the undervoltage sampling circuit 111 and the overvoltage sampling circuit 112, and the processing module 17 receives the battery charging voltage obtained by the undervoltage sampling circuit 111 and the overvoltage sampling circuit 112, performs data processing on the battery charging voltage, determines a battery charging state, and stores the battery charging voltage according to the battery charging state.

Illustratively, when the processing module 17 determines that the battery state of charge is an under-voltage state, the processing module 17 stores the battery state of charge information; when the processing module 17 determines that the battery charging state is a normal state, the processing module 17 does not store the battery charging state information; when the processing module 17 determines that the battery charging state is an overvoltage state, the processing module 17 stores the battery charging state information; therefore, a crew member and an overhaul member can read the charge state information of the storage battery when the storage battery is under-voltage or over-voltage, the hidden trouble of the storage battery can be eliminated more accurately, and the storage battery is prevented from being damaged.

With reference to fig. 5, optionally, the train storage battery charging control device 10 further includes a USB data interface 18, the processing module 17 is connected to the USB data interface 18 (not shown in the figure), and a crew member and an overhaul member can read the storage battery charging state information stored in the processing module 17 through the USB data interface 18, so as to more accurately eliminate the hidden trouble of the storage battery and avoid the storage battery from being damaged.

With reference to fig. 2, optionally, the processing module 17 is connected to the relay module 13, and after the processing module 17 determines the charging state of the storage battery according to the charging voltage of the storage battery, the processing module may be further configured to control the charging state of the charger according to the charging state of the storage battery.

For example, taking the second switch unit 124 as an NPN-type triode as an example, the processing module 17 is connected to the collector of the second switch unit 124, and when the charging state of the storage battery is an under-voltage state or a normal state, the processing module 17 maintains the potential at the collector of the second switch unit 124 to ensure that the second switch unit 124 is in an off state and the overvoltage relay 132 does not operate, thereby ensuring that the charger 15 is in a power supply state; when the processing module 17 determines that the storage battery is in overvoltage according to the charging voltage of the storage battery, and the duration time is longer than the first preset time, the potential at the collector of the second switch unit 124 is changed, so that the second switch unit 124 is turned on, the overvoltage relay 132 is controlled to act, the charger 15 stops charging the storage battery 16, the storage battery 16 is protected, the storage battery 16 is prevented from being damaged due to overcharge, and the performance requirement of improving the train running safety is met. The processing module 17 controls the charging state of the charger according to the charging state of the storage battery, so that the problem that the charger 15 is shut down by mistake due to unstable charging voltage of the storage battery can be avoided, and the anti-interference capability of the train storage battery charging control device 10 is improved.

With continued reference to fig. 2 to 6, optionally, the train storage battery charging control apparatus 10 according to the embodiment of the present invention further includes an indication module 19, where the indication module 19 is connected to the relay module 13, and the relay module 13 is further configured to control the indication module 19 to indicate according to the storage battery charging state.

The indication module 19 may include a voice alarm, an indicator light, and other devices capable of indicating, and those skilled in the art may set the indication according to actual requirements. In this embodiment, the relay module 13 controls the indication module 19 to indicate according to the charging state of the storage battery, so that a crew member and an overhaul staff can find out hidden troubles in time, and the hidden troubles can be eliminated in advance, thereby avoiding the overcharge damage of the storage battery.

Illustratively, as shown in fig. 2, the indication module 19 includes a green indicator 191, a yellow indicator 192 and a red indicator (not shown), the under-voltage relay 131 is connected to the green indicator 191, the yellow indicator 192 and the indicator power supply, respectively, and the over-voltage relay 132 is connected to the red indicator and the indicator power supply, respectively (not shown). When the charging state of the storage battery is an undervoltage state, the undervoltage relay 131 conducts the yellow indicator light 192 and the indicator light power supply, so that the yellow indicator light 192 is turned on; when the charging state of the storage battery is a normal state, the undervoltage relay 131 conducts the green indicator lamp 191 and the indicator lamp power supply to enable the green indicator lamp 191 to be on; when the charging state of the storage battery is an overvoltage state, the undervoltage relay 131 can conduct the red indicator lamp and the power supply of the indicator lamp, so that the red indicator lamp is turned on; therefore, crews and maintainers can find the hidden trouble in time according to the colors of the indicator lights, and then remove the hidden trouble in advance, thereby avoiding the overcharge damage of the storage battery.

The power supply for the indicator light may be a power supply provided by the integrated control cabinet 14, for example, as shown in fig. 2, the power supply for the indicator light adopts a DC110V control power supply, and the undervoltage relay 131 is connected to the control electrical transmission line + 110. In addition, the color of the indicator light is not limited to yellow, green and red provided in the embodiments, in other embodiments, a person skilled in the art may set the indication color and the indication form of the indicator light according to actual requirements, and the embodiment of the present invention does not limit this.

With continued reference to fig. 2, optionally, the train storage battery charging control device 10 according to the embodiment of the present invention further includes an auxiliary power supply 20, where the auxiliary power supply 20 may be connected to the +130 transmission line and the-110 transmission line of the integrated control cabinet 14, so as to obtain a DC110V control power supply provided by the integrated control cabinet 14, and convert a DC110V control power supply voltage into isolated DC24V and DC5V power supplies, so as to supply power to circuits in the train storage battery charging control device, such as the sampling module 11, the processing module 17, the control module 12, and the relay module 13, and meet the power supply requirement of the train storage battery charging control device. It should be noted that fig. 2 does not show the connection relationship between the auxiliary power supply 20 and the circuits such as the sampling module 11, the processing module 17, the control module 12, the relay module 13, etc., and in practical applications, those skilled in the art can connect the auxiliary power supply 20 and the circuits such as the sampling module 11, the processing module 17, the control module 12, the relay module 13, etc., according to the power requirements required by the circuits such as the sampling module 11, the processing module 17, the control module 12, the relay module 13, etc.

With continued reference to fig. 5 and 6, optionally, the train battery charging control device 10 provided by the embodiment of the invention is installed in the integrated control cabinet 14.

Illustratively, as shown in fig. 5 and 6, the train storage battery charging control device 10 is provided with interfaces 1-6, and the interfaces 1-6 are respectively connected with a DC110V control electric positive line +110, a DC110V control electric negative line-110, a storage battery sampling positive line D +, a storage battery sampling negative line-110, a charger control electric input positive line +110/+130 and a charger control electric output positive line-110/+ 130-1 of the integrated control cabinet 14, so that a DC110V control power supply and a storage battery charging voltage are obtained through the integrated control cabinet 14, and the charging state of the charger is controlled.

With continued reference to fig. 5 and 6, optionally, a mounting hole 101 is further disposed on the outer shell of the train storage battery charging control device 10, so that the train storage battery charging control device 10 is independently and additionally installed in the integrated control cabinet 14, and thus, a crew member and an overhaul staff can find hidden troubles in time and remove troubles in advance.

It should be noted that the structural size of the train battery charging control device 10 shown in fig. 6 is only an example, and those skilled in the art can arbitrarily set the structural size of the train battery charging control device 10 according to actual needs, which is not limited in the embodiment of the present invention.

To sum up, the train storage battery charging control device 10 provided in the embodiment of the present invention integrates technologies such as a switching power supply, an integrated operational amplifier, a logic processing, a data storage, and a serial communication, wherein a storage battery charging voltage sample is detected by the train storage battery charging control device and processed by the operational amplifier circuit, a control module records and outputs a parameter value through a storage circuit after collecting and judging, and outputs external control and state display through the logic circuit, so as to realize functions of auxiliary power supply, overvoltage protection, undervoltage protection/recovery, and protection data storage and reading, automatically identify and record storage battery charging voltage information, perform protection processing after judging, avoid overcharging a storage battery by a charger, and improve driving safety.

The train storage battery charging control device 10 belongs to a vehicle secondary protection system, and can be applied to a train of a vehicle system, and a person skilled in the art can set the connection relation of the train storage battery charging control device 10 and other functional modules of the train of the vehicle system according to actual requirements.

For example, as shown in fig. 4, the integrated control cabinet 14 is a four-in-one integrated control cabinet, the charger 15 is connected to the integrated control cabinet 14 through an anti-reverse diode 21 so as to supply power to the train load, and the charger 15 can output voltage through a plurality of transmission lines (such as an illumination power transmission line L +, a control electrical transmission line +110, a storage battery sampling positive line D +, and the like). The train may further include a power distribution cabinet 22, a fuse FU, and other necessary auxiliary devices to improve the stability of the power supplied by the charger 15, which is not limited in the embodiment of the present invention.

Fig. 7 is a logic schematic diagram of another train storage battery charging control apparatus according to an embodiment of the present invention, and fig. 8 is a schematic diagram of a work flow of the another train storage battery charging control apparatus according to the embodiment of the present invention, as shown in fig. 7 and fig. 8, optionally, the train storage battery charging control apparatus 10 according to the embodiment of the present invention includes a storage battery charging voltage detection sensor (not shown in the figure), a PLC control module 23, and a control relay KM, the storage battery charging voltage detection sensor is respectively connected to the integrated control cabinet 14 and the PLC control module 23, the PLC control module 23 is connected to the control relay KM, and the control relay KM is connected in series to a control circuit of the charger 15. The storage battery charging voltage detection sensor is used for acquiring storage battery charging voltage through the integrated control cabinet 14, and the storage battery charging voltage comprises storage battery input voltage and/or charger output voltage. The PLC control module 23 is used for determining the charging state of the storage battery according to the charging voltage of the storage battery, and controlling the on and off of the control relay KM according to the charging state of the storage battery so as to control the charging state of the charger, wherein the charging state of the storage battery comprises an undervoltage state, a normal state and an overvoltage state, and the charging state of the charger comprises a power supply state and a shutdown state. The PLC control module 23 is further configured to control the control relay KM to be turned on when the charging state of the storage battery is an undervoltage state, so that the charger 15 is in a power supply state; when the charging state of the storage battery is a normal state, controlling the control relay KM to be conducted so as to enable the charger 15 to be in a power supply state; when the charging state of the storage battery is an overvoltage state, the control relay KM is controlled to be turned off, so that the charger 151 is in a shutdown state.

The PLC control module 23 may be a Programmable Logic Controller (PLC) in the integrated control cabinet 14, so as to reduce the cost of installing the train battery charging control device.

For example, the control relay KM may be connected in series in a control circuit of the charger 15, and the control relay KM is normally in a conducting state. The storage battery charging voltage detection sensor outputs a sampling signal to be fed back to the PLC control module 23, the PLC control module 23 carries out data processing on the sampling signal, when the sampling signal is lower than a standard range value, the storage battery charging state is an under-voltage state, the PLC control module 23 sends an instruction to the control relay KM, the control relay KM does not act (is conducted), a control circuit of the charger is electrified, the charger 15 works normally, and the output voltage charges the storage battery 16; when the sampling signal is within the standard range value, the charging state of the storage battery is a normal state, the PLC control module 23 sends an instruction to the control relay KM, the control relay KM does not act (is conducted), a control circuit of the charger is electrified, the charger works normally, and output voltage supplies power to loads such as train illumination and the like; when the sampling signal is higher than the standard range value, the charging state of the storage battery is an overvoltage state, the PLC control module 23 sends an instruction to the control relay KM, the control relay KM acts (is disconnected), the control circuit of the charger is powered off, and the charger 15 does not work, so that the storage battery 16 is stopped being charged, the storage battery is protected, and the performance requirement of improving the train running safety is met.

The standard range value may be set according to a rated voltage of the storage battery, which is not limited in the embodiment of the present invention.

In summary, in the train storage battery charging control device 10 provided in the embodiment of the present invention, after the PLC control module 23 determines that the storage battery 16 is in the overvoltage state, the control circuit of the charger is cut off, the charger fails to perform the self-check, and stops outputting the voltage after self-protection, so as to protect the storage battery 16 at the load end, and meet the performance requirement of improving the train running safety.

In addition, the train storage battery charging control device 10 provided by the embodiment of the invention can be applied to a train of a vehicle system, and a person skilled in the art can also set the connection relationship of the train storage battery charging control device 10 and other functional modules of the train of the vehicle system according to actual requirements.

For example, as shown in fig. 7, the integrated control cabinet 14 may be a four-in-one integrated control cabinet, the charger 15 is connected to the integrated control cabinet 14 through an anti-reverse diode 21 to supply power to the train load, and the charger 15 may output voltage through a plurality of transmission lines (e.g., an illumination power transmission line L +, a control electrical transmission line +110, a storage battery sampling positive line D +). The train may further include a power distribution cabinet 22, a fuse FU, a relay K, and other necessary auxiliary devices to improve the stability of the power supplied by the charger 15.

With continuing reference to fig. 7 and 8, the train storage battery charging control device 10 provided by the embodiment of the invention includes a voltage detection module 25 and an on-off module 26, the voltage detection module 25 is respectively connected with the input end of the storage battery 16 and the on-off module 26, and the on-off module 26 is connected in series with the main loop of the storage battery 16; the voltage detection module 25 is configured to obtain a charging voltage of the storage battery, and determine a charging state of the storage battery according to the charging voltage of the storage battery, where the charging voltage of the storage battery includes an input voltage of the storage battery and/or an output voltage of a charger, and the charging state of the storage battery includes an undervoltage state, a normal state, and an overvoltage state. The voltage detection module 25 is further configured to control the on/off of the on/off module according to the charging state of the storage battery, so as to control the charging state of the charger, where the charging state of the charger includes a power supply state and a shutdown state. The voltage detection module 25 is further configured to control the on-off module 26 to be turned on when the charging state of the storage battery is an undervoltage state, so that the charger 15 is in a power supply state; when the charging state of the storage battery is a normal state, the on-off control module 26 is controlled to be conducted, so that the charger 15 is in a power supply state; when the charging state of the storage battery is an overvoltage state, the on-off control module 26 is switched off, so that the charger 15 is in a stop state.

Illustratively, the voltage detection module 25 detects the charging voltage of the storage battery, and determines the charging state of the storage battery according to the charging voltage of the storage battery, wherein when the charging voltage of the storage battery is lower than a standard range value, the charging state of the storage battery is an undervoltage state, and the voltage detection module 25 controls the on-off module 26 to be switched on so as to normally close the main circuit of the storage battery; when the charging voltage of the storage battery is within the standard range value and the charging state of the storage battery is a normal state, the voltage detection module 25 controls the on-off module 26 to be conducted so as to normally close the main circuit of the storage battery; when the charging voltage of the storage battery is higher than the standard range value, the charging state of the storage battery is an overvoltage state, the voltage detection module 25 controls the on-off module 26 to be switched off, so that the main loop of the storage battery is switched off, the charger 15 stops charging the storage battery 16, and the storage battery is protected, so that the performance requirement of improving the train running safety is met.

Among them, as shown in fig. 7, the voltage detection module 25 and the on-off module 26 may be integrated together to reduce the occupied space. The standard range value may be set according to a rated voltage of the battery, which is not limited in the embodiment of the present invention. The on-off module 26 may be a safety device such as an air switch, and may be set by those skilled in the art according to actual requirements.

For example, taking the air switch as an example of the on-off module 26, when the voltage detection module 25 detects the overvoltage of the battery charging, the voltage detection module 25 controls the air switch to release the main circuit of the battery, and the battery 16 has no voltage input, so as to avoid the damage of the battery 16 due to overcharge.

In other embodiments, a person skilled in the art may combine the above embodiments, for example, as shown in fig. 7, the train battery charging control apparatus 10 is configured to include a battery charging voltage detection sensor (not shown), a PLC control module 23, a control relay KM, a voltage detection module 25, and an on-off module 26, so as to cut off the control circuit of the charger and the main circuit of the battery at the same time, and protect the battery 16.

It should be noted that, in the train storage battery charging control method and the train storage battery charging control device provided by the embodiment of the invention, when the integrated control cabinet does not have or is not additionally provided with a storage battery voltage detection protection function; when the charger does not have or the output voltage of the charger is not controlled; when the storage battery is not provided with a voltage patrol inspection protection function, mutual feedback between the charger and the storage battery and other loads can be realized, so that the storage battery is subjected to overcharge protection, the problem that the storage battery is damaged due to overcharge because of mutual independence and mutual non-feedback in the protection functions of the train charger and the storage battery and other loads is solved, the service life of the storage battery and other load end equipment is prolonged, and the driving safety is guaranteed.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A train storage battery charging control method is characterized by comprising the following steps:

when the charging state of the storage battery is the under-voltage state, controlling the charger to be in the power supply state;

when the charging state of the storage battery is the normal state, controlling the charger to be in the power supply state;

and when the charging state of the storage battery is the overvoltage state, controlling the charger to be in the shutdown state.

2. The train storage battery charging control method according to claim 1,

controlling the charger to be in the shutdown state, including:

3. The train storage battery charging control method according to claim 1,

when controlling the charging state of the charger according to the charging state of the storage battery, the method further comprises the following steps:

and indicating according to the charging state of the storage battery.

4. The train storage battery charging control method according to claim 1,

5. The train storage battery charging control device is characterized by comprising a sampling module, a control module and a relay module;

6. The train battery charging control apparatus according to claim 5,

the sampling module comprises an under-voltage sampling circuit and an over-voltage sampling circuit; the control module comprises a first operational amplifier, a second operational amplifier, a first switch unit and a second switch unit; the relay module comprises an undervoltage relay and an overvoltage relay;

7. The train battery charging control apparatus according to claim 5,

the train storage battery charging control device also comprises a processing module, the processing module is connected with the sampling module, and the processing module is used for determining the charging state of the storage battery according to the charging voltage of the storage battery;

8. The train battery charging control apparatus according to claim 5,

the train storage battery charging control device also comprises an indication module, and the indication module is connected with the relay module;

9. A train storage battery charging control device is characterized by comprising a storage battery charging voltage detection sensor, a PLC control module and a control relay;

10. A train storage battery charging control device is characterized by comprising a voltage detection module and an on-off module;