CN216969634U - Rail vehicle - Google Patents
Rail vehicle Download PDFInfo
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- CN216969634U CN216969634U CN202220723307.4U CN202220723307U CN216969634U CN 216969634 U CN216969634 U CN 216969634U CN 202220723307 U CN202220723307 U CN 202220723307U CN 216969634 U CN216969634 U CN 216969634U
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Abstract
The application discloses a rail vehicle, which comprises a bogie, wherein a vehicle body main body is arranged on the bogie, a driving wheel and a driving motor for driving the driving wheel to rotate are arranged on the bogie, a first power storage unit and a second power storage unit are arranged on the vehicle body main body, and the discharge voltage of the first power storage unit is higher than that of the second power storage unit; the first power storage unit is used for providing electric energy for a first load, and the first load at least comprises the driving motor; the second power storage unit is used for providing electric energy for a second load, and the second load comprises at least any one of a lighting unit, a sensor unit, a control unit, a vehicle door opening and closing unit and a communication unit. According to the scheme, the first power storage unit and the second power storage unit can provide electric energy for the corresponding first load and second load when the power supply of the contact network or the power supply rail is abnormal or in a road section without the contact network or the power supply rail, so that the normal operation of the railway vehicle is guaranteed.
Description
Technical Field
The utility model relates to the technical field of rail transit equipment, in particular to a rail vehicle.
Background
Railway vehicles such as light rails, subways and the like take electricity from corresponding contact networks or power supply rails through pantograph lifting or collector shoes so as to maintain the running of the railway vehicles and the normal work of various electricity loads in the railway vehicles. When the power supply of the contact network or the power supply rail is abnormal (such as abnormal power failure and too low voltage), or on a road section without the contact network or the power supply rail, the rail vehicle cannot drive away by itself.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rail vehicle which is used for still ensuring the normal operation of the rail vehicle when the power supply of a contact network or a power supply rail is abnormal or in a road section without the contact network or the power supply rail.
The utility model provides a railway vehicle, which comprises a bogie, wherein a vehicle body main body is arranged on the bogie, a driving wheel and a driving motor for driving the driving wheel to rotate are arranged on the bogie, a first power storage unit and a second power storage unit are arranged on the vehicle body main body, and the discharge voltage of the first power storage unit is higher than that of the second power storage unit;
the first power storage unit is used for providing electric energy for a first load, and the first load at least comprises the driving motor;
the second power storage unit is used for providing electric energy for a second load, and the second load comprises at least any one of a lighting unit, a sensor unit, a control unit, a vehicle door opening and closing unit and a communication unit.
As an implementation manner, the first power storage unit includes at least two first battery modules connected in series, and a first switch is disposed in a series circuit of the two first battery modules.
As an implementation manner, a grounded leakage sensor is electrically connected to the series circuit of the two first battery modules.
As an implementation manner, the first power storage unit is electrically connected with the first load through a power supply circuit, and the power supply circuit comprises a discharge branch and a pre-charge branch which are arranged in parallel;
the discharging branch is provided with a second switch;
the pre-charging branch comprises a third switch and a current-limiting resistor which are arranged in series.
As an implementation manner, a current sensor is arranged in the power supply circuit.
As an implementation mode, an air suspension is arranged on the bogie, and a vehicle-mounted air conditioner is arranged on the vehicle body main body;
the first load further includes an air compressor of the air suspension, and the vehicle-mounted air conditioner.
As an implementation manner, the first battery module includes a lithium ion battery or a super capacitor.
As an implementation manner, the second power storage unit includes a second battery module and a third battery module that are independent of each other, and an output voltage of the second battery module is lower than that of the third battery module.
As an implementation manner, the second battery module and the third battery module include at least any one of a lithium ion battery, a super capacitor, a lead-acid storage battery, and a graphene storage battery.
As an implementation manner, the second power storage unit includes a first output branch and a second output branch, the first output branch is connected to a dc transformer, and an output voltage of the dc transformer is different from an output voltage of the second output branch.
According to the scheme provided by the utility model, as the first electricity storage unit and the second electricity storage unit are arranged on the vehicle body main body, electric energy can be provided to the corresponding first load and second load by the first electricity storage unit and the second electricity storage unit when the power supply of the contact network or the power supply rail is abnormal or on a road section without the contact network or the power supply rail, so that the normal operation of the railway vehicle is ensured.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural view of a railway vehicle according to the present invention;
FIG. 2 is a schematic diagram of a circuit of the present invention connected to a first power storage unit;
fig. 3 is a schematic circuit diagram of the second power storage unit according to the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 3, the present invention provides a railway vehicle, such as but not limited to a light rail, a subway, etc., comprising a bogie 4, wherein a vehicle body 1 is disposed on the bogie 4, generally, one vehicle body 1 is carried by two bogies 4, the bogie 4 is used as a traveling mechanism, and the bogie 4 is divided into a power bogie and a non-power bogie according to the driving capability of the bogie 4, wherein the power bogie is a driving bogie, and the non-power bogie is a driven bogie.
For the power bogie, a driving wheel 5 and a driving motor 61 for driving the driving wheel 5 to rotate are arranged on the power bogie; for a non-powered bogie, the drive wheels 5 are provided thereon, and the drive motor 61 is not provided.
The vehicle body 1 is provided with a first power storage unit 2 and a second power storage unit 3, the discharge voltage of the first power storage unit 2 is higher than the discharge voltage of the second power storage unit 3, for example, but not limited to, the discharge voltage of the first power storage unit 2 is 750V, the discharge voltage of the second power storage unit 3 is 110V, and the like, and the voltage values herein are merely illustrative, and are not the only limitation to the present application, and may be other voltage values to feel a specific use environment; the first power storage unit 2 and the second power storage unit 3 are used for supplying power to the corresponding first load 6 and second load 8 when the power supply of the overhead line system or the power supply rail is abnormal or in a road section without the overhead line system or the power supply rail.
Specifically, the first power storage unit 2 is used to supply electric energy to a first load 6, and the first load 6 includes at least the drive motor 61; the electric power is supplied from the first electric storage unit 2 to the drive motor 61 so that the railway vehicle can normally run.
The second power storage unit 3 is configured to supply electric power to a second load 8, and the second load 8 includes at least any one of a lighting unit 81, a sensor unit 82, a control unit 83, a door opening/closing unit 84, and a communication unit 85. The second power storage unit 3 supplies power to the lighting unit 81, the sensor unit 82, the control unit 83, the door opening and closing unit 84 and the communication unit 85, so that normal operation of each unit is maintained, and basic functions and safety of rail transit in abnormal power supply of a contact net or a power supply rail or in operation of a road section without the contact net or the power supply rail are guaranteed.
According to the scheme provided by the utility model, as the first electricity storage unit 2 and the second electricity storage unit 3 are arranged on the vehicle body main body 1, electric energy can be supplied to the corresponding first load 6 and second load 8 by the first electricity storage unit 2 and the second electricity storage unit 3 when the power supply of a contact network or a power supply rail is abnormal or on a road section without the contact network or the power supply rail, so that the normal operation of the rail vehicle is ensured.
As an implementation manner, in order to improve the safety of the first electricity storage unit 2, the first electricity storage unit 2 includes at least two first battery modules 21 arranged in series, and a first switch QS1 is arranged in a series circuit of the two first battery modules 21. According to the actual working requirement, the on/off of the first switch QS1 is controlled, when the first switch QS1 is in an off state, the series circuits of more than two first battery modules 21 arranged in series are opened, at the moment, the first electricity storage unit 2 is in an off state, a certain first battery module 21 is prevented from being damaged due to a fault, and the first electricity storage unit 2 can be prevented from being damaged due to a fault of an external circuit of the first electricity storage unit 2, so that the safety of the first electricity storage unit 2 is improved.
As a practical mode, the earth leakage sensor 7 is electrically connected to the series circuit of the two first battery modules 21. The leakage sensor 7 detects at least the insulation resistance of the first electricity storage unit 2, and when the insulation resistance is detected to be small, the central control system of the railway vehicle can send out a corresponding alarm and control the first switch QS1 and the like to be turned off so as to ensure the safety of the first electricity storage unit 2.
As an implementation manner, in order to prevent the load from being damaged by the instantaneous large current when the circuit is closed, the first power storage unit 2 is electrically connected to the first load 6 through a power supply circuit, where the power supply circuit includes a discharging branch and a pre-charging branch that are arranged in parallel;
the discharging branch is provided with a second switch KM 2;
the pre-charging branch comprises a third switch KM1 and a current-limiting resistor R1 which are arranged in series.
When the circuit is closed, the third switch KM1 is firstly closed, and the current limiting resistor R1 is connected in series in the pre-charging branch, so that the current during closing is limited, the impact of instantaneous current on each load during closing of the circuit is reduced, after the third switch KM1 is closed for a certain time, electronic elements such as capacitors in each load are pre-charged, and at the moment, the second switch KM2 is closed, so that the corresponding load works normally. The pre-charging branch is arranged to pre-charge each load, and then the discharging branch supplies normal working power to the load, so that the load is effectively prevented from being damaged by instantaneous heavy current when the circuit is closed, the safety level of the system is improved, and the service life of the system is prolonged.
In which the units of the first load 6, such as the driving motor 61, the air compressor 62, and the vehicle air conditioner 63, are arranged in parallel, and the closing of the third switch KM1 allows the units of the first load 6 to be pre-charged without separately pre-charging the units.
As an implementation, a current sensor LH1 is provided in the power supply circuit. The current sensor LH1 is used to detect the current level of the power supply circuit, and the control system can control the power of the first power storage unit 2 according to the detected current level. For example, but not limiting of, the current sensor LH1 may be a current hall sensor.
As a practical mode, the bogie 4 is provided with an air suspension, and the vehicle body main body 1 is provided with a vehicle-mounted air conditioner 63; the comfort of the rail vehicle ride can be improved by providing an air suspension on the bogie 4.
The first load 6 further includes the air compressor 62 of the air suspension, and the vehicle air conditioner 63.
As an implementation manner, the first battery module 21 includes a lithium ion battery or a super capacitor. The lithium ion battery referred to herein may be a lithium iron phosphate battery, a lithium titanate battery, a ternary lithium battery, or the like.
As a practical matter, the second power storage unit 3 includes a second battery module 31 and a third battery module 32 that are independent of each other, and the output voltage of the second battery module 31 is lower than that of the third battery module 32. For example, but not limited to, the discharge voltage of the second battery module 31 is 24V, and the discharge voltage of the third battery module 32 is 110V, and the voltage values herein are merely exemplary and are not the only limitations of the present application, and may be other voltage values according to the specific use environment. By separately providing the second battery module 31 and the third battery module 32, power can be supplied to the second load 8 (i.e., a low-voltage load) of a corresponding voltage class, and the two are separately provided, so that if one of the two fails, the normal operation of the other one is not affected.
As an implementation manner, the second battery module 31 and the third battery module 32 include at least any one of a lithium ion battery, a super capacitor, a lead-acid battery, and a graphene battery.
As an implementation manner, the second power storage unit 3 includes a first output branch and a second output branch, the first output branch is connected with a dc transformer, and an output voltage of the dc transformer is different from an output voltage of the second output branch. For example, the second power storage unit 3 may be a battery, and the second power storage unit 3 outputs different voltages through a dc transformer without using more than two batteries, which may save cost.
The rail vehicle is described below in one specific implementation.
The rail vehicle is exemplified by a tractor of a subway vehicle, such as the first or last section of a train of subway vehicles. The power steering device comprises a vehicle body 1, wherein two bogies 4 are arranged below the vehicle body 1, the two bogies 4 can be power bogies 4, and driving wheels 5 and a driving motor 61 for driving the driving wheels 5 to rotate are arranged on the two bogies 4. The drive wheels 5 run along the subway rail. A power supply rail (also called a third rail) is further arranged in parallel with the subway rail, and a current collector (also called a collector shoe) is arranged on the vehicle body 1 and is in contact with the power supply rail and used for obtaining electric power from the power supply rail so as to normally supply power to each load of the railway vehicle.
The vehicle body 1 is further provided with a first power storage unit 2 and a second power storage unit 3 for assisting power supply to each load of the rail vehicle in the case of power supply rail power supply abnormality or no power supply rail power supply.
Specifically, the first power storage unit 2 is configured to supply electric power to the first load 6, the first load 6 includes at least the driving motor 61, an air compressor 62 of an air suspension provided on the bogie 4, and an in-vehicle air conditioner 63 provided on the vehicle body 1, the first load 6 may be referred to as a high-voltage load, and a discharge voltage of the first power storage unit 2 may be 750V or the like, for example.
The second power storage unit 3 includes a second battery module 31 and a third battery module 32 that are independent of each other, for example, the discharge voltage of the second battery module 31 is 24V, the discharge voltage of the third battery module 32 is 110V, and the two are respectively used for supplying power to the corresponding second load 8, where the second load 8 includes a lighting unit 81, a sensor unit 82, a control unit 83, a door opening/closing unit 84, and a communication unit 85.
The first electricity storage unit 2 includes two first battery modules 21 connected in series, two first switches QS1 are provided in the series circuit of the first battery modules 21, and two electric leakage sensors 7 connected to the ground are electrically connected to the series circuit of the first battery modules 21.
The first electricity storage unit 2 is electrically connected with a first load 6 through a power supply circuit, a current Hall sensor is arranged in the power supply circuit, and the power supply circuit comprises a discharging branch and a pre-charging branch which are arranged in parallel; the discharging branch is provided with a second switch KM 2; the pre-charging branch comprises a third switch KM1 and a current-limiting resistor R1 which are arranged in series.
In addition, fuse FU1 can also be connected in the power supply circuit for when the power supply circuit short-circuit and the current abnormal increase appear, take place the fusing to play the guard action to the power supply circuit, prevent that corresponding electronic components, unit etc. from burning out.
In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise direct contact between the first and second features through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the present application, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of features described above, but also covers other embodiments with any combination of features described above or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A rail vehicle comprises a bogie, wherein a vehicle body main body is arranged on the bogie, a driving wheel and a driving motor for driving the driving wheel to rotate are arranged on the bogie, and the rail vehicle is characterized in that a first power storage unit and a second power storage unit are arranged on the vehicle body main body, and the discharge voltage of the first power storage unit is higher than that of the second power storage unit;
the first power storage unit is used for providing electric energy for a first load, and the first load at least comprises the driving motor;
the second power storage unit is used for providing electric energy for a second load, and the second load comprises at least any one of a lighting unit, a sensor unit, a control unit, a vehicle door opening and closing unit and a communication unit.
2. The rail vehicle according to claim 1, characterized in that the first electric storage unit comprises at least two first battery modules arranged in series, and a first switch is arranged in a series circuit of the two first battery modules.
3. The railway vehicle as claimed in claim 2, wherein a grounded leakage sensor is electrically connected to the series circuit of two first battery modules.
4. The rail vehicle according to claim 1, 2 or 3, characterized in that the first electrical storage unit is electrically connected to the first load via a supply circuit comprising a discharge branch and a pre-charge branch arranged in parallel;
the discharging branch is provided with a second switch;
the pre-charging branch comprises a third switch and a current-limiting resistor which are arranged in series.
5. The rail vehicle according to claim 4, characterized in that a current sensor is provided in the supply circuit.
6. The railway vehicle as claimed in claim 1, 2 or 3, wherein an air suspension is provided on the bogie and an on-board air conditioner is provided on the vehicle body;
the first load further includes an air compressor of the air suspension, and the vehicle-mounted air conditioner.
7. The rail vehicle according to claim 2 or 3, characterized in that the first battery module comprises a lithium ion battery or a supercapacitor.
8. The rail vehicle according to claim 1, 2 or 3, characterized in that the second electricity storage unit includes a second battery module and a third battery module that are independent of each other, and the second battery module has an output voltage lower than that of the third battery module.
9. The rail vehicle according to claim 8, wherein the second battery module and the third battery module include at least any one of a lithium ion battery, a super capacitor, a lead-acid battery, and a graphene battery.
10. The rail vehicle according to claim 1, 2 or 3, characterized in that the second power storage unit comprises a first output branch and a second output branch, a direct current transformer is connected to the first output branch, and the output voltage of the direct current transformer is different from the output voltage of the second output branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220723307.4U CN216969634U (en) | 2022-03-30 | 2022-03-30 | Rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220723307.4U CN216969634U (en) | 2022-03-30 | 2022-03-30 | Rail vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216969634U true CN216969634U (en) | 2022-07-15 |
Family
ID=82340612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220723307.4U Active CN216969634U (en) | 2022-03-30 | 2022-03-30 | Rail vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216969634U (en) |
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2022
- 2022-03-30 CN CN202220723307.4U patent/CN216969634U/en active Active
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