CN217216026U - Engineering truck power supply system and engineering truck - Google Patents
Engineering truck power supply system and engineering truck Download PDFInfo
- Publication number
- CN217216026U CN217216026U CN202220208469.4U CN202220208469U CN217216026U CN 217216026 U CN217216026 U CN 217216026U CN 202220208469 U CN202220208469 U CN 202220208469U CN 217216026 U CN217216026 U CN 217216026U
- Authority
- CN
- China
- Prior art keywords
- power supply
- storage battery
- engineering truck
- supply system
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the application provides a power supply system of an engineering truck and the engineering truck, wherein the power supply system mainly comprises a generator, a charger and a storage battery, electric energy generated by the generator is charged to the storage battery through the charger, or the electric energy is directly supplied to various loads on the engineering truck, and the storage battery can also be used as a power supply to supply power. The power supply system that this application embodiment provided has got rid of the reliance to the contact net, adopts the generator direct power supply or to the mode that the battery charges promoted the duration of machineshop car greatly, guarantees that the machineshop car can normal work, provides multiple power supply mode moreover, makes the flexibility of machineshop car on the operation line obtain showing and promotes.
Description
Technical Field
The application relates to the technical field of engineering vehicles, in particular to an engineering vehicle power supply system and an engineering vehicle.
Background
The engineering vehicle is vehicle equipment which needs to be used in engineering construction, can complete various operations such as equipment installation, maintenance and the like, and is indispensable equipment in current engineering construction activities.
With the increasing attention on environmental problems, the new energy engineering vehicle has the advantages of energy conservation, environmental protection, low emission and low noise, so that the engineering vehicle used in rail transit is developed towards new energy.
At present, most rail engineering trucks adopt a power supply system of a storage battery and a contact network, namely, the contact network erected along a rail is used for taking power and charging the storage battery, and then the power supply or the storage battery obtained from the contact network is used for supplying power. The power supply mode depends on the contact network seriously, when the contact network breaks down or is in a construction or maintenance state, the rail engineering truck cannot get power from the contact network, only can use the electric energy stored in the storage battery, and once the electric energy of the storage battery is exhausted, the rail engineering truck cannot operate, so that the cruising ability of the rail engineering truck is limited.
Disclosure of Invention
In order to solve one of the technical defects, the embodiment of the application provides a power supply system of a engineering truck and the engineering truck.
According to a first aspect of the embodiments of the present application, there is provided a power supply system for a construction vehicle, including:
the generator is used for generating power supply;
the input end of the charger is electrically connected with the output end of the generator, and the charger is used for processing a power supply generated by the generator;
the input end of the power supply change-over switch is electrically connected with the output end of the charger, the power supply change-over switch is provided with a plurality of output ends, and the power supply change-over switch is used for switching a power supply input from the input end to one of the plurality of output ends;
the input end of the storage battery is electrically connected with one output end of the power supply change-over switch, and when the power supply change-over switch is switched to be electrically connected with the storage battery, the charger charges the storage battery;
and the direct current bus is electrically connected with the other output end of the power supply change-over switch and the output end of the storage battery, and the direct current bus is used for supplying power to load equipment on the engineering truck.
The power supply system for the engineering truck further comprises:
a charging device provided in a parking shop;
the charging device comprises a charging device and a charging switch, wherein the charging switch is provided with two input ends, the two input ends are respectively electrically connected with the charging device and the generator, the output end of the charging switch is electrically connected with the input end of the charger, and the charging switch is used for switching a power supply input to the charger between the generator and the charging device.
The power supply system for the engineering truck comprises a first storage battery and a second storage battery, the power supply change-over switch is provided with three output ends, the three output ends are respectively and electrically connected with the input end of the first storage battery, the input end of the second storage battery and the direct current bus, and when the charger charges one of the first storage battery and the second storage battery, the other one of the first storage battery and the second storage battery supplies power to the direct current bus.
According to the power supply system for the engineering truck, the first storage battery and the second storage battery are respectively and electrically connected with the direct current bus through a diode, and the cathode of the diode is connected with the direct current bus.
According to a second aspect of the embodiments of the present application, a work vehicle is provided, which includes the above work vehicle power supply system and a load device, wherein the work vehicle power supply system is used for supplying power to the load device.
A work vehicle as described above, the load device comprising:
an auxiliary load;
and the auxiliary inverter is used for converting the direct current provided by the power supply system of the engineering truck into alternating current and providing the alternating current for the auxiliary load.
According to the engineering truck, the auxiliary load comprises an air conditioner, an air compressor, a socket and a hydraulic pump station motor.
A work vehicle as described above, the load device further comprising:
the traction motor is used for drawing the engineering truck to move;
and the motor controller is used for converting the direct current provided by the power supply system of the engineering truck into alternating current and providing the alternating current for the traction motor.
The engineering truck comprises a first traction motor and a second traction motor, wherein the motor controller comprises a first motor controller and a second motor controller, the first motor controller and the second motor controller are respectively used for supplying power to the first traction motor and the second traction motor, and the first traction motor and the second traction motor are both used for dragging the engineering truck to move.
A work vehicle as described above, the load device further comprising:
and the brake unit is used for braking the engineering truck.
A work vehicle as described above, the load device further comprising:
the braking resistance box is internally provided with braking resistance, the braking resistance is electrically connected with the braking unit, and when the engineering truck is in a braking state, the braking resistance is used for consuming electric energy generated by the traction motor.
According to the engineering truck, the brake resistance box is internally provided with:
the temperature sensor is used for acquiring the temperature in the brake resistor box;
and the cooling fan is used for cooling the brake resistance box when the temperature in the brake resistance box is higher than a set temperature.
By adopting the power supply system, the engineering truck and the power supply control method for the engineering truck, which are provided by the embodiment of the application, the following advantages are achieved:
by adopting the power supply system of the engineering truck, the cruising ability of the engineering truck is greatly improved, the flexibility of the engineering truck on an operation line is obviously improved, the risk that the engineering truck is anchored on the operation line due to the fault of a storage battery power system is avoided, and the characteristics of cleanness, environmental protection and low noise of the new energy engineering truck are realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic composition diagram of a power supply system and load equipment of a work vehicle in a work vehicle according to an embodiment of the present disclosure;
fig. 2 is a schematic composition diagram of a power supply system and load devices of a work vehicle in another work vehicle according to an embodiment of the present disclosure.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the process of realizing this application, the inventor finds that the rail engineering vehicle in the prior art mostly adopts the power supply system of battery and contact net combination. For example, patent application CN109245284A discloses a dual-source power supply system and a dual-source power engineering truck, where the power supply system includes a main power supply circuit for a catenary, a main power supply circuit for a storage battery, and the like, and when the engineering truck is in an electrified area, that is, an area where the catenary is normally powered, the power supply switching device switches to a catenary power supply mode, and at this time, the main power supply circuit for the catenary serves as a power supply for the engineering truck. And when the engineering truck is in the non-electricity area, the power supply switching device is switched to a storage battery power supply mode, and the storage battery is used as a power supply of the engineering truck. The power supply system of contact net and battery combination that this patent adopted has the advantage of green pollution-free and low noise, but only uses the battery as the power in the electroless region, in case the battery breaks down or the electric quantity exhausts, then the machineshop car has unable normal operation, even the risk of breaking down on the operation line, has not only restricted the duration of a journey ability of machineshop car, has brought the security threat to orbital normal use moreover.
In order to solve the above problems, an embodiment of the present application provides a power supply system for an engineering truck, an engineering truck and a power supply control method, where the power supply system mainly includes a generator, a charger and a storage battery, electric energy generated by the generator is charged into the storage battery through the charger, or is directly supplied to various loads on the engineering truck, and the storage battery can also be used as a power supply to supply power. The power supply system that this application embodiment provided has got rid of the reliance to the contact net, adopts the generator direct power supply or to the mode that the battery charges promoted the duration of machineshop car greatly, guarantees that the machineshop car can normal work, provides multiple power supply mode moreover, makes the flexibility of machineshop car on the operation line obtain showing and promotes.
Fig. 1 is a schematic composition diagram of a power supply system and load devices of a work vehicle in the work vehicle according to an embodiment of the present disclosure. As shown in fig. 1, an embodiment of the present application provides a power supply system for a mobile machinery shop, including:
the generator is used for generating power supply;
the input end of the charger is electrically connected with the output end of the generator, and the charger is used for processing the power generated by the generator;
the input end of the power supply change-over switch is electrically connected with the output end of the charger, the power supply change-over switch is provided with a plurality of output ends, and the power supply change-over switch is used for switching a power supply input from the input end to one of the plurality of output ends;
the input end of the storage battery is electrically connected with one output end of the power supply change-over switch, and when the power supply change-over switch is switched to be electrically connected with the storage battery, the charger charges the storage battery;
and the direct current bus is electrically connected with the other output end of the power supply change-over switch and the output end of the storage battery, and the direct current bus is used for supplying power to load equipment on the engineering truck.
For example, the generator may be a common gasoline generator or a common diesel generator, and the generator is a product combining an internal combustion engine and a magnet generator, and the internal combustion engine combusts fuel such as gasoline and diesel to drive the magnet generator to work, so as to generate electric energy.
In general, the power generated by the generator is ac power, so the charger needs to convert the ac power generated by the generator into dc power to charge the storage battery or supply power to the dc bus. Meanwhile, when the power voltage generated by the generator is not matched with the charging voltage of the storage battery, or the power voltage generated by the generator is not matched with the working voltage of the direct-current bus, the charger needs to perform boosting or voltage reduction processing on the power voltage generated by the generator to supply power to the storage battery or the direct-current bus. For example, when the power generated by the generator is AC380V and the charging power of the battery requires DC220V, the charger needs to convert the AC power into DC power and also needs to step down the 380V voltage to 220V.
The power supply change-over switch is used for outputting the power supply output by the charger to the storage battery or the direct current bus. When the storage battery can work normally, namely, the storage battery can be charged and discharged normally, the power supply changeover switch is switched to supply the power output by the charger to the storage battery, so that the charger charges the storage battery, and meanwhile, the storage battery also supplies power to load equipment on the engineering truck through the direct current bus, so that the engineering truck can work normally. When the storage battery is in fault or in a power shortage state, the storage battery cannot be continuously used as a power supply to supply power to the direct-current bus, and at the moment, the power supply change-over switch is switched to directly supply the power output by the charger to the direct-current bus so as to supply power to load equipment of the engineering truck.
This application adopts the generator as the final power of machineshop car, has eliminated the reliance of traditional machineshop car to the contact net, and the power of machineshop car can be selected in a flexible way between battery and the machine that charges moreover, uses the battery as the power when the battery normally works, and the machine that charges to the battery, uses the power of machine output that charges when the battery trouble, has not only improved the duration of a journey ability of machineshop car, has promoted the flexibility of machineshop car on the operation line moreover.
In a possible embodiment, further comprising: the charging device is arranged in the parking workshop; the charging switch is provided with two input ends which are respectively electrically connected with the charging device and the generator, the output end of the charging switch is electrically connected with the input end of the charger, and the charging switch is used for switching a power supply input to the charger between the generator and the charging device.
For example, after the work is finished, the work vehicle needs to be returned to a parking workshop for storage or maintenance, and a charging device is arranged in the parking workshop and can be used for charging the storage battery. The charging device can be equipment such as a charging pile and a socket.
In the embodiments of the present application, the charging switch and the power supply switch may be manual switches, such as single-pole double-throw switches, single-pole multiple-throw switches, or electronic switches, such as relays. If electronic switches are used, a control panel is required to be arranged on the engineering vehicle, for example, in a cab, and a driver can control the working state of each electronic switch through the control panel. The control panel may also have an automatic control function, for example, the control panel may monitor the connection state of the generator and the charging device, and when the input terminal of the charging switch connected to the generator has the input voltage, the control panel may switch the charging switch to the generator connection state. And when the control panel monitors that the input end of the charging change-over switch connected with the charging device has the input voltage, the control panel can switch the charging change-over switch to the access state of the charging device.
Accordingly, the control panel may monitor the output voltage of the battery through the voltage sensor, and when it is determined that the output voltage of the battery is lower than the set voltage value, the control panel may switch the power supply changeover switch to a state of supplying power to the dc bus. When the storage battery is charged, for example, by the charging device, the control panel determines that the output voltage of the storage battery is above the set voltage value, and then the control panel switches the power supply changeover switch to a state of supplying power to the storage battery.
The storage battery may be a pack, and the storage battery may be discharged while being charged.
Fig. 2 is a schematic composition diagram of a power supply system and load devices of a work vehicle in another work vehicle according to an embodiment of the present disclosure. As shown in fig. 2, the present embodiment provides another implementation: the storage battery comprises a first storage battery and a second storage battery, the power supply change-over switch is provided with three output ends, the three output ends are respectively electrically connected with the input end of the first storage battery, the input end of the second storage battery and the direct current bus, and when the charger charges one of the first storage battery and the second storage battery, the other one of the first storage battery and the second storage battery supplies power to the direct current bus. One of the first storage battery and the second storage battery can be switched to a charging state and the other can be switched to a discharging state by the power supply changeover switch.
For example, a set of storage batteries can be charged and discharged simultaneously, but the storage batteries are damaged relatively greatly by discharging while charging, so if two storage batteries are provided, when one storage battery, for example, the first storage battery, has a relatively high output voltage, the storage battery can be used as a power supply to supply power to the direct current bus, and the other storage battery, for example, the second storage battery, can be charged under the power supply of the charger. When the output voltage of the first storage battery is reduced to be lower than the set voltage value after the first storage battery is discharged for a long time or no output voltage is caused due to failure, the power supply change-over switch can be switched to supply power to the first storage battery, and the second storage battery supplies power to the direct-current bus, so that when one storage battery is in a charging state, the other storage battery is in a discharging state, the service life of the storage batteries can be prolonged, and the working safety of the storage batteries is improved. When the output voltage of the two storage batteries is too low due to long-time and heavy-load work or no output voltage is caused due to failure, the power supply change-over switch can be switched to directly supply power to the direct-current bus, so that the engineering truck can normally work.
In one possible embodiment, the first battery and the second battery are each electrically connected to the dc bus via a diode, and the cathode of the diode is connected to the dc bus.
The diode serves, for example, to prevent the load devices on the work vehicle from charging the battery in the reverse direction, which could lead to damage to the battery.
In one possible embodiment, the operating states of the first Battery and the second Battery are both controlled by a BMS (Battery Management System) System.
The BMS system is configured to control whether the battery is in a charging state or a discharging state, and particularly, whether the battery is connected to the dc bus, and if the battery is connected to the dc bus, the BMS is in the discharging state, and if the battery is not connected to the dc bus, the BMS is in the charging state.
In the embodiment of the present application, the first battery and the second battery may have one BMS system respectively, or may share one BMS system, and the BMS system is also communicatively connected to the control panel, and specifically, a CAN (Controller Area Network) bus may be communicatively connected to the control panel to adjust the operating state of the battery under the control of the control panel.
As shown in fig. 1, an embodiment of the present application further provides a work vehicle, where the work vehicle includes the above work vehicle power supply system and a load device, and the work vehicle power supply system is configured to supply power to the load device.
Exemplary load devices may include auxiliary inverters, auxiliary loads, motor controllers, traction motors, brake units, dc choppers, control loads, and the like.
An auxiliary inverter is coupled to the dc bus and an auxiliary load is coupled to the auxiliary inverter for converting dc power provided by the dc bus to AC power, such as converting dc power provided by the dc bus to AC380V power and providing the AC power to the auxiliary load. In embodiments of the present application, the auxiliary loads may include air conditioners, air compressors, sockets, hydraulic pump station motors, and the like.
The motor controller is connected with the direct current bus, the traction motor is connected with the motor controller, and the motor controller is used for converting a direct current power supply provided by the direct current bus into alternating current with adjustable frequency and voltage and providing the alternating current to the traction motor. The rotating shaft of the traction motor can be connected with an axle of the engineering truck so as to drive the axle to rotate under the control of the motor controller, and further the engineering truck can move forwards or backwards.
In the embodiment of the present application, the motor controller may be replaced with a traction inverter, and the traction motor may employ a synchronous motor or a three-phase asynchronous motor. The motor controller adopts a V/F direct control mode to control the traction motor to work, namely, a control mode that the output voltage and the frequency of the motor controller are in direct proportion is ensured, the control mode can ensure that the magnetic flux of the traction motor is kept consistent, and weak magnetic field and magnetic saturation are avoided. When the engineering truck moves at a low speed, the traction motor outputs constant torque, and the motor controller sends a set frequency frame to set the rotating speed of the traction motor. Meanwhile, when the engineering truck receives the traction of other vehicles or equipment, the traction motor is driven by the axle to rotate, and then a power supply is generated. At the moment, other equipment on the engineering truck does not work, and in order to avoid the power supply generated by the traction motor from damaging other equipment, the motor controller cuts off the connection with the direct current bus when detecting that the traction motor has output voltage, so that the reverse input of the power supply generated by the traction motor is prevented.
And the braking unit is connected with the direct-current bus and used for obtaining power supply from the direct-current bus and braking the engineering truck.
The direct current chopper is connected with the direct current bus, the control load is connected with the direct current chopper, and the direct current chopper is used for performing voltage conversion on direct current provided by the direct current bus. For example, the high-voltage direct current provided by the direct current is converted into 27V direct current and provided to the control load. In the embodiment of the application, the control load can be equipment used in the communication process of the engineering truck.
In a possible embodiment, the traction motors include a first traction motor and a second traction motor, the motor controller includes a first motor controller and a second motor controller, the first motor controller and the second motor controller are respectively used for supplying power to the first traction motor and the second traction motor, and the first traction motor and the second traction motor are both used for dragging the engineering truck to move.
For example, the engineering vehicle usually has two or more axles, the first traction motor and the second traction motor can be respectively connected with the two axles, and the engineering vehicle can be driven to move simultaneously when both the traction motors are normal. When one traction motor fails and cannot work, the other traction motor can continue to drive the engineering truck to move.
In a possible embodiment, the load device further comprises: the braking resistance box is internally provided with a braking resistance which is electrically connected with the braking unit, and when the engineering truck is in a braking state, the braking resistance is used for consuming the electric energy generated by the traction motor.
For example, when the engineering truck is in a braking state, the traction motor can also generate power, and in order to reduce the influence of the power generated by the traction motor on other equipment on the engineering truck, the braking resistor is used for consuming the electric energy fed back to the direct current bus by the traction motor.
In a possible embodiment, the braking resistance box is internally provided with: the temperature sensor is used for acquiring the temperature in the brake resistor box; and the cooling fan is used for cooling the brake resistance box when the temperature in the brake resistance box is higher than the set temperature.
For example, since the braking resistor needs to consume the electric energy generated by the traction motor and needs to consume as much electric energy as possible, the power of the braking resistor is relatively large, and the electric energy is converted into heat energy and is dissipated. So the long-time back of working of brake resistance can lead to brake resistance incasement temperature higher, for making the brake resistance case can not break down because of high temperature, threatens the safety of other equipment even, this application adopts temperature sensor to acquire the temperature in the brake resistance case, and when the temperature exceeded the settlement temperature, the cooling blower started in order to take out the heat in the brake resistance case outside the brake resistance case, played the refrigerated effect.
The embodiment of the application also provides a power supply control method for the engineering truck, which comprises the following steps:
acquiring the working state of the storage battery;
when the storage battery works normally, the power supply output by the charger is input into the storage battery through the power supply change-over switch so as to charge the storage battery, and meanwhile, the storage battery supplies power to the direct current bus;
when the storage battery works abnormally, a power supply output by the charger is connected to the direct current bus through the power supply changeover switch, and the direct current bus is used for supplying power to load equipment on the engineering truck.
Illustratively, the processing of the power generated by the generator by the charger includes ac-dc conversion, voltage conversion, and the like. The normal operation of the storage battery means that the output voltage exceeds a set voltage value, and the abnormal operation of the storage battery means that the output voltage is lower than the set voltage value.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting 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 to implicitly indicate 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, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (12)
1. A power supply system for a construction vehicle, comprising:
a generator for generating electrical power;
the input end of the charger is electrically connected with the output end of the generator, and the charger is used for processing a power supply generated by the generator;
the input end of the power supply change-over switch is electrically connected with the output end of the charger, the power supply change-over switch is provided with a plurality of output ends, and the power supply change-over switch is used for switching a power supply input from the input end to one of the plurality of output ends;
the input end of the storage battery is electrically connected with one output end of the power supply change-over switch, and when the power supply change-over switch is switched to be electrically connected with the storage battery, the charger charges the storage battery;
and the direct current bus is electrically connected with the other output end of the power supply change-over switch and the output end of the storage battery, and the direct current bus is used for supplying power to load equipment on the engineering truck.
2. The power supply system for engineering trucks according to claim 1, characterized by further comprising:
a charging device provided in a parking shop;
the charging device comprises a charging device and a charging switch, wherein the charging switch is provided with two input ends, the two input ends are respectively electrically connected with the charging device and the generator, the output end of the charging switch is electrically connected with the input end of the charger, and the charging switch is used for switching a power supply input to the charger between the generator and the charging device.
3. The power supply system for engineering trucks according to claim 1, wherein the storage battery comprises a first storage battery and a second storage battery, the power supply change-over switch has three output terminals, the three output terminals are respectively electrically connected with the input terminal of the first storage battery, the input terminal of the second storage battery and the direct current bus, and when the charger charges one of the first storage battery and the second storage battery, the other of the first storage battery and the second storage battery supplies power to the direct current bus.
4. The power supply system for engineering trucks according to claim 3, wherein the first storage battery and the second storage battery are electrically connected to the DC bus through a diode respectively, and the cathode of the diode is connected to the DC bus.
5. A work vehicle, characterized by comprising the work vehicle power supply system of any one of claims 1-4 and load equipment, the work vehicle power supply system being configured to supply power to the load equipment.
6. A work vehicle according to claim 5, characterized in that the load arrangement comprises:
an auxiliary load;
and the auxiliary inverter is used for converting the direct current provided by the power supply system of the engineering truck into alternating current and providing the alternating current for the auxiliary load.
7. The mobile machinery shop of claim 6, wherein the auxiliary loads comprise air conditioners, air compressors, sockets and hydraulic pump station motors.
8. The work vehicle of claim 7, wherein said load device further comprises:
the traction motor is used for drawing the engineering truck to move;
and the motor controller is used for converting the direct current provided by the power supply system of the engineering truck into alternating current and providing the alternating current for the traction motor.
9. The mobile machinery shop of claim 8, wherein the traction motor comprises a first traction motor and a second traction motor, the motor controller comprises a first motor controller and a second motor controller, the first motor controller and the second motor controller are respectively used for supplying power to the first traction motor and the second traction motor, and the first traction motor and the second traction motor are both used for dragging the mobile machinery shop to move.
10. The work vehicle of claim 8, wherein said load device further comprises:
and the brake unit is used for braking the engineering truck.
11. The work vehicle of claim 10, wherein said load device further comprises:
the braking resistance box is internally provided with braking resistance, the braking resistance is electrically connected with the braking unit, and when the engineering truck is in a braking state, the braking resistance is used for consuming electric energy generated by the traction motor.
12. The engineering vehicle according to claim 11, wherein the brake resistor box is internally provided with:
the temperature sensor is used for acquiring the temperature in the brake resistor box;
and the cooling fan is used for cooling the brake resistance box when the temperature in the brake resistance box is higher than a set temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220208469.4U CN217216026U (en) | 2022-01-25 | 2022-01-25 | Engineering truck power supply system and engineering truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220208469.4U CN217216026U (en) | 2022-01-25 | 2022-01-25 | Engineering truck power supply system and engineering truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217216026U true CN217216026U (en) | 2022-08-16 |
Family
ID=82794304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220208469.4U Active CN217216026U (en) | 2022-01-25 | 2022-01-25 | Engineering truck power supply system and engineering truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217216026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115503510A (en) * | 2022-10-19 | 2022-12-23 | 中车株洲电力机车有限公司 | Electric locomotive and power supply device and method thereof |
-
2022
- 2022-01-25 CN CN202220208469.4U patent/CN217216026U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115503510A (en) * | 2022-10-19 | 2022-12-23 | 中车株洲电力机车有限公司 | Electric locomotive and power supply device and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7923866B2 (en) | Power supply system and vehicle including the same, and method of controlling the same | |
| CN107206887B (en) | Electric or hybrid vehicle with a plurality of drive units arranged in separate parts of the vehicle | |
| CN108032862B (en) | Hybrid power supply power system and power supply method for internal combustion motor train unit | |
| US8047317B2 (en) | System, vehicle, and method | |
| JP2007159236A (en) | Vehicle power supply device and vehicle | |
| CN108702004B (en) | Method and system for controlling current fed to a battery pack | |
| CN110228372B (en) | Third rail and lithium battery hybrid power supply circuit | |
| CN103818265A (en) | Battery management device used on power communication medium | |
| CN217216026U (en) | Engineering truck power supply system and engineering truck | |
| CN111775976A (en) | Hybrid shunting locomotive control system based on four-quadrant rectification | |
| CN111114345A (en) | Pure electric alternating-current transmission dumper driving system | |
| CN111361418B (en) | Power battery power supply system for track engineering vehicle | |
| CN201833893U (en) | Electric transmission system for subway shunting | |
| CN212022339U (en) | Power battery power supply system for rail engineering vehicle | |
| KR20170025605A (en) | Power conversion control method of for using high voltage vehicle | |
| KR20150008378A (en) | Isolation contactor transition polarity control | |
| CN109591528B (en) | Hybrid power highway-railway vehicle and control system thereof | |
| US20190337401A1 (en) | Battery system and electrically drivable motor vehicle | |
| CN114374266A (en) | Engineering truck power supply system, engineering truck and power supply control method | |
| CN114633708A (en) | Pure electric alternating-current transmission system | |
| EP3858652B1 (en) | Sistema de alimentación para un tren eléctrico, y tren eléctrico | |
| CN113858978A (en) | Double battery system and electric automobile | |
| CN103339852A (en) | Electric-powered system using power storage apparatus, and work vehicle comprising same | |
| JP2012074333A (en) | Power storage device and monitoring-control device used therefor | |
| CN212579629U (en) | Power supply system of railway vehicle and railway vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |