CN214083946U - Power management device and power supply system for electric highway and railway dual-purpose vehicle - Google Patents
Power management device and power supply system for electric highway and railway dual-purpose vehicle Download PDFInfo
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- CN214083946U CN214083946U CN202022478427.6U CN202022478427U CN214083946U CN 214083946 U CN214083946 U CN 214083946U CN 202022478427 U CN202022478427 U CN 202022478427U CN 214083946 U CN214083946 U CN 214083946U
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model discloses a power management device and a power supply system for an electric highway and railway dual-purpose vehicle, wherein the device comprises a voltage acquisition module, a temperature acquisition module, a current acquisition module, an electric quantity calculation module, a controller and a display; the voltage acquisition module is used for acquiring the output voltage of each storage battery to obtain voltage sampling data; the temperature acquisition module is used for acquiring the temperature of more than one storage battery to obtain temperature sampling data; the current acquisition module is used for acquiring the output current of the storage battery pack and acquiring current sampling data; the electric quantity calculation module is used for calculating the residual electric quantity of the storage battery pack according to the voltage sampling data, the temperature sampling data and the current sampling data; the controller is used for controlling the display to display the residual electric quantity of the storage battery pack. The utility model provides an electronic highway railway dualpurpose vehicle power management device and power supply system can carry out real-time supervision to storage battery's residual capacity.
Description
Technical Field
The utility model relates to a battery power supply technical field, concretely relates to electronic highway railway dualpurpose car power management device and power supply system.
Background
A rail-road dual-purpose vehicle is an engineering vehicle which can travel on a track and also can travel on a road. As the national requirements on environmental protection are higher and higher, a plurality of factories use the electric rail-road vehicle to replace a diesel locomotive for traction. The electric combined car for the highway and the railway is powered by the storage battery pack, and the electric combined car for the highway and the railway generally needs to operate under the conditions of poor railway line, complex traction working condition, frequent starting and high traction quality, and requires long endurance time and short charging time of the storage battery pack, so that the storage battery pack is very important for providing the electric combined car for the highway and the railway. In the prior art, the situation that the electric quantity is insufficient and the electric vehicle is used continuously often occurs, so that the service life of the storage battery pack is shortened, and the operation of the electric vehicle for both roads and railways is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the electric rail-road dual-purpose vehicle often has the problem that the electric quantity is not enough and the continuous use leads to the storage battery life to shorten.
The utility model discloses a following technical scheme realizes:
a power management device of an electric highway-railway dual-purpose vehicle is powered by a storage battery pack, the storage battery pack comprises N storage batteries which are connected in series, the negative electrode of the nth storage battery is connected with the positive electrode of the (N + 1) th storage battery through a conductive connecting strip, the positive electrode of the first storage battery is connected with a positive power line, the negative electrode of the nth storage battery is connected with a negative power line, N is more than or equal to 1 and less than or equal to N-1, and N is an integer not less than 2, and the power management device is characterized by comprising a voltage acquisition module, a temperature acquisition module, a current acquisition module, an electric quantity calculation module, a controller and a display;
the voltage acquisition module is used for acquiring the output voltage of each storage battery to obtain voltage sampling data;
the temperature acquisition module is used for acquiring the temperature of more than one storage battery to obtain temperature sampling data;
the current acquisition module is used for acquiring the output current of the storage battery pack and acquiring current sampling data;
the electric quantity calculation module is connected with the voltage acquisition module, the temperature acquisition module and the current acquisition module and is used for calculating the residual electric quantity of the storage battery pack according to the voltage sampling data, the temperature sampling data and the current sampling data;
the controller is connected with the electric quantity calculation module and the display and is used for controlling the display to display the residual electric quantity of the storage battery pack.
Optionally, the voltage acquisition module includes a first sampling conductor, a second sampling conductor, and N-1 third sampling conductors, where the first sampling conductor is connected to the positive power line, the second sampling conductor is connected to the negative power line, and each third sampling conductor is correspondingly connected to one connection bar.
Optionally, the temperature acquisition module includes M temperature sensors, each temperature sensor is correspondingly connected to one connecting strip, M is an integer and M is not greater than N.
Optionally, the current collecting module includes a current transformer, and the current transformer is configured to sense a current flowing through the positive power line.
Optionally, the electric quantity calculation module is further configured to calculate an output voltage of the storage battery pack, an output current of the storage battery pack, and a temperature of the storage battery pack according to the voltage sampling data, the temperature sampling data, and the current sampling data;
the controller is also used for controlling the display to display the output voltage of the storage battery pack, the output current of the storage battery pack and the temperature of the storage battery pack.
Optionally, the controller is a programmable logic controller.
Optionally, the display is a liquid crystal display.
Optionally, the power management device of the electric highway-railway dual-purpose vehicle further comprises a buzzer;
the controller is still used for control when storage battery's residual capacity is less than first predetermined electric quantity buzzer sends first alarm signal storage battery's residual capacity is less than the second and controls when predetermineeing the electric quantity traction motor stop work of electric combined car storage battery's residual capacity is less than the third and controls when predetermineeing the electric quantity buzzer sends second alarm signal, first predetermined electric quantity is greater than the second is predetermine the electric quantity, the second is predetermine the electric quantity and is greater than the third is predetermine the electric quantity, first alarm signal's duration is first preset time, traction motor stop work's duration is the second and is preset time.
Based on the same inventive concept, the invention also provides a power supply system of the electric road-rail vehicle, which comprises a storage battery pack, wherein the storage battery pack comprises N storage batteries which are connected in series, the negative electrode of the nth storage battery is connected with the positive electrode of the (N + 1) th storage battery through a conductive connecting strip, the positive electrode of the first storage battery is connected with a positive power line, the negative electrode of the nth storage battery is connected with a negative power line, N is more than or equal to 1 and less than or equal to N-1, and N is an integer not less than 2;
the positive power line is connected with the positive end of the charging socket, the positive end of the first DC-DC conversion module, the positive end of the second DC-DC conversion module, the positive end of the motor controller, the positive end of the steering pump motor and the positive end of the brake motor sequentially through the main brake switch and the positive junction box;
the negative power line is connected with a negative end of the charging socket, a negative end of the first DC-DC conversion module, a negative end of the second DC-DC conversion module, a negative end of the motor controller, a negative end of the steering pump motor and a negative end of the brake motor through the negative junction box;
the first DC-DC conversion module is used for converting the output voltage of the storage battery pack into the power supply voltage of a control loop and a lighting loop, and the second DC-DC conversion module is used for converting the output voltage of the storage battery pack into the power supply voltage of the power supply management device.
Optionally, each storage battery is provided with a transparent box cover, and the transparent box cover is provided with a water replenishing hole;
the power supply system further comprises a water guide pipe, and the water guide pipe is sequentially connected with the water replenishing holes of each transparent box cover.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model provides an electric highway-railway dual-purpose vehicle power management device and power supply system, through setting up voltage acquisition module, temperature acquisition module and current acquisition module, by the output voltage of every battery is gathered to voltage acquisition module, by the temperature acquisition module gathers the temperature of more than one battery, by current acquisition module gathers the output current of storage battery, and through setting up electric quantity calculation module, by electric quantity calculation module according to the voltage sampling data that voltage acquisition module gathered, the temperature sampling data that temperature acquisition module gathered and the current sampling data that current acquisition module gathered, calculate the residual electric quantity of storage battery, and show the residual electric quantity of storage battery by controller control display, can be to the residual electric quantity of storage battery carries out real-time supervision, make things convenient for operating personnel to know storage battery's residual capacity when storage battery's residual capacity is not enough, can in time give storage battery charges, can guarantee storage battery's life and best charge-discharge performance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a battery pack of an electric combined vehicle according to an embodiment of the present invention;
fig. 2 is a schematic circuit structure diagram of a power management device of an electric highway/railway dual-purpose vehicle according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a circuit structure for collecting voltage and current of a storage battery according to an embodiment of the present invention;
fig. 4 is a schematic circuit structure diagram of a power supply system of the electric combined vehicle according to the embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a charger according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a water guiding pipe according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
The embodiment of the utility model provides an electronic combined car power management device, electronic combined car is supplied power by storage battery. Fig. 1 is a schematic structural diagram of the battery pack, the battery pack includes N batteries 11 connected in series, a negative electrode of an nth battery 11 is connected to a positive electrode of an (N + 1) th battery 11 through a conductive connecting bar 12, the positive electrode of the first battery 11 is connected to a positive power supply line L1, the negative electrode of the nth battery 11 is connected to a negative power supply line L2, N is greater than or equal to 1 and less than or equal to N-1, and N is an integer not less than 2. In the embodiment of the present invention, the battery pack includes 40 batteries 11 connected in series, the rated voltage of each battery 11 is 2V, and the rated voltage of the battery pack is 80V. In some application scenarios, the battery packs may be arranged in multiple groups to be placed on the body of the electric combined vehicle, for example, 40 batteries 11 connected in series may be arranged in three groups: one group is 24 storage batteries, and the other two groups are respectively 8 storage batteries.
Fig. 2 is a schematic circuit structure diagram of the power management device of the electric highway-railway dual-purpose vehicle, and the power management device includes a voltage acquisition module 21, a temperature acquisition module 22, a current acquisition module 23, an electric quantity calculation module 24, a controller 25 and a display 26.
The voltage acquisition module 21 is connected to the storage battery pack and configured to acquire an output voltage of each storage battery 11 to obtain voltage sampling data. Referring to fig. 3, in the embodiment of the present invention, the voltage collecting module 21 includes a first sampling conducting wire 31, a second sampling conducting wire 32 and N-1 third sampling conducting wires 33, the first sampling conducting wire 31 is connected to the positive power line L1, the second sampling conducting wire 32 is connected to the negative power line L2, and each third sampling conducting wire 33 is correspondingly connected to one connecting strip 12. By leading out sampling wires from the positive power supply line L1, the negative power supply line L2, and the connection bar 12, a voltage difference between every two adjacent sampling wires corresponds to an output voltage of one battery 11.
The temperature acquisition module 22 is connected with the storage battery pack and used for acquiring the temperature of more than one storage battery 11 and acquiring temperature sampling data. In the embodiment of the present invention, the temperature acquisition module 22 includes M temperature sensors, each temperature sensor is correspondingly connected to one connecting bar 12, and M is an integer and M is not more than N. The quantity of M temperature sensor and the concrete position that every temperature sensor connects set up according to the practical application scene, the embodiment of the utility model provides a do not prescribe a limit to this.
The current collection module 23 is connected to the storage battery pack and configured to collect output current of the storage battery pack and obtain current sampling data. Referring to fig. 3, in the embodiment of the present invention, the current collecting module 23 includes a current transformer TA101, the current transformer TA101 is coupled to the positive power line L1 for inducing a current flowing through the positive power line L1, and the current flowing through the positive power line L1 is the output current of the storage battery.
The electric quantity calculation module 24 is connected to the voltage acquisition module 21, the temperature acquisition module 22 and the current acquisition module 23, and is configured to calculate the remaining electric quantity of the storage battery according to the voltage sampling data, the temperature sampling data and the current sampling data. In the embodiment of the present invention, the electric quantity calculating module 24 adopts a BMS-a20-S101 module. Those skilled in the art know how to calculate the remaining capacity of the battery pack using the BMS-a20-S101 module, and will not be described herein. After the electric quantity calculation module 24 obtains the remaining electric quantity of the storage battery pack, the remaining electric quantity of the storage battery pack CAN be sent to the controller 25 through a communication line such as a CAN network cable.
The controller 25 is connected to the electric quantity calculating module 24 and the display 26, and is configured to receive the remaining electric quantity of the battery pack from the electric quantity calculating module 24, and control the display 26 to display the remaining electric quantity of the battery pack. In the embodiment of the present invention, the controller 25 is a programmable logic controller, for example, EPEC3724 may be adopted, and the display 26 may be a liquid crystal display.
In an optional implementation manner, the electric quantity calculation module 24 is further configured to calculate an output voltage of the battery pack, an output current of the battery pack, and a temperature of the battery pack according to the voltage sampling data, the temperature sampling data, and the current sampling data, and the controller 25 is further configured to control the display 26 to display the output voltage of the battery pack, the output current of the battery pack, and the temperature of the battery pack.
The embodiment of the utility model provides an electric highway railway dual-purpose vehicle power management device, through setting up voltage acquisition module 21, temperature acquisition module 22 and current acquisition module 23, by voltage acquisition module 21 gathers the output voltage of every battery 11, by temperature acquisition module 22 gathers the temperature of more than one battery 11, by current acquisition module 23 gathers the output current of storage battery, and through setting up electric quantity calculation module 24, by electric quantity calculation module 24 according to the voltage sampling data that voltage acquisition module 21 gathered, the temperature sampling data that temperature acquisition module 22 gathered and the current sampling data that current acquisition module 23 gathered, calculate the residual capacity of storage battery, and by controller 25 control display 26 shows the residual capacity of storage battery, can be right storage battery's residual capacity carries out real-time supervision, makes things convenient for operating personnel to know storage battery's residual capacity when storage battery's residual capacity is not enough, can in time give storage battery charges, can guarantee storage battery's life and best charge-discharge performance.
In an alternative implementation, the power management device further comprises a buzzer 27. The controller 25 is further configured to compare the remaining power of the storage battery with a preset power, control the buzzer 27 to send a first alarm signal when the remaining power of the storage battery is smaller than a first preset power, control the traction motor of the electric rail-road vehicle to stop working when the remaining power of the storage battery is smaller than a second preset power, control the buzzer 27 to send a second alarm signal when the remaining power of the storage battery is smaller than a third preset power, control the first preset power to be greater than the second preset power, control the second preset power to be greater than the third preset power, control the duration of the first alarm signal to be a first preset time, and control the duration of the traction motor to stop working to be a second preset time.
The embodiment of the utility model provides an in, first preset electric quantity is 30% of rated power, the second preset electric quantity is 25% of rated power, the third preset electric quantity is 20% of rated power, first preset time is 5 minutes, the second preset time is 10 minutes. When the residual electric quantity of the storage battery pack is less than 30% of the rated electric quantity, the controller 25 controls the buzzer 27 to alarm for 5 minutes to prompt an operator to charge the storage battery pack; when the residual electric quantity of the storage battery pack is less than 25% of the rated electric quantity, the controller 25 controls the traction motor not to work, the operation is stopped for 10 minutes, and an operator is prompted to charge the storage battery pack; when the residual electric quantity of the storage battery pack is less than 20% of the rated electric quantity, the controller 25 controls the buzzer 27 to continuously give an alarm, and prompts an operator to charge the storage battery pack again.
Based on the same inventive concept, the embodiment of the utility model also provides an electric combined car power supply system. Fig. 4 is a schematic circuit structure diagram of the electric combined vehicle power supply system, which includes a battery pack, a main brake switch SA101, a positive junction box 51, a negative junction box 52, a charging socket 53, a first DC-DC conversion module 55, a second DC-DC conversion module 56, and a power management device, which is the power management device described in the foregoing embodiment. The structure of the storage battery pack is shown in fig. 1, the storage battery pack comprises N storage batteries 11 connected in series, the negative electrode of the nth storage battery 11 is connected with the positive electrode of the (N + 1) th storage battery 11 through a conductive connecting bar 12, the positive electrode of the first storage battery 11 is connected with a positive power supply line L1, the negative electrode of the nth storage battery 11 is connected with a negative power supply line L2, N is larger than or equal to 1 and smaller than or equal to N-1, and N is an integer not smaller than 2.
Since the output current of the battery pack is large, it is necessary to externally draw output lines from the positive junction box 51 and the negative junction box 52. The positive power supply line L1 is connected to the positive terminal of the charging socket 53, the positive terminal of the first DC-DC conversion module 55, the positive terminal of the second DC-DC conversion module 56, the positive terminal of the motor controller 54, the positive terminal of the steering pump motor M1, and the positive terminal of the brake motor M2 sequentially via the master switch SA101 and the positive junction box 51, and the negative power supply line L2 is connected to the negative terminal of the charging socket 53, the negative terminal of the first DC-DC conversion module 55, the negative terminal of the second DC-DC conversion module 56, the negative terminal of the motor controller 54, the negative terminal of the steering pump motor M1, and the negative terminal of the brake motor M2 via the negative junction box 52. In the embodiment of the present invention, the positive terminal of the first DC-DC conversion module 55, the positive terminal of the second DC-DC conversion module 56, the positive terminal of the motor controller 54, the positive terminal of the steering pump motor M1, and the positive terminal of the brake motor M2 are connected to the first output line L3 of the positive junction box 51, and the negative terminal of the first DC-DC conversion module 55, the negative terminal of the second DC-DC conversion module 56, the negative terminal of the motor controller 54, the negative terminal of the steering pump motor M1, and the negative terminal of the brake motor M2 are connected to the second output line L4 of the negative junction box 52.
The charging socket 53 is used for being connected with a charger when the storage battery pack is charged, a schematic circuit structure diagram of the charger is shown in fig. 5, and the charger is used for converting 380V alternating current provided by a factory switch cabinet into 80V direct current. The motor controller 54 is configured to convert the output voltage of the battery pack into a working voltage required by the traveling motor. The electric combined car is also provided with a plurality of control loops and lighting loops, and the first DC-DC conversion module 55 is used for converting the output voltage of the storage battery into the power supply voltage of the control loops and the lighting loops. The second DC-DC conversion module 56 is configured to convert the output voltage of the battery pack into a power supply voltage of the power management device. Control switches and fuses may be provided between the first output line L3 and the positive terminal of the motor controller 54, between the first output line L3 and the positive terminal of the steering pump motor M1, and between the first output line L3 and the positive terminal of the brake motor M2.
If the storage battery 11 is not timely replenished with water, the lead plate of the water-deficient part is used or stored for a period of time, the surface vulcanization phenomenon can occur, the performance of the storage battery 11 is influenced, and the service life is shortened. In an alternative implementation, each accumulator 11 is provided with a transparent box cover provided with a water replenishing hole 13. Referring to fig. 6, the power supply system further includes a water guide pipe 71, and the water guide pipe 71 is sequentially connected to the water replenishing hole 13 of each transparent box cover. In some application scenarios, the storage battery packs may be arranged in multiple groups to be placed on the body of the electric combined vehicle, and correspondingly, the water conduit 71 may be arranged in multiple sections. Because every battery 11 adopts the setting of transparent box cover, operating personnel regularly checks whether battery 11 need not uncap when lack of water, and it is very convenient to operate, guarantees battery 11 keeps good state operation constantly.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A power management device of an electric highway-railway dual-purpose vehicle is powered by a storage battery pack, the storage battery pack comprises N storage batteries which are connected in series, the negative electrode of the nth storage battery is connected with the positive electrode of the (N + 1) th storage battery through a conductive connecting strip, the positive electrode of the first storage battery is connected with a positive power line, the negative electrode of the nth storage battery is connected with a negative power line, N is more than or equal to 1 and less than or equal to N-1, and N is an integer not less than 2, and the power management device is characterized by comprising a voltage acquisition module, a temperature acquisition module, a current acquisition module, an electric quantity calculation module, a controller and a display;
the voltage acquisition module is used for acquiring the output voltage of each storage battery to obtain voltage sampling data;
the temperature acquisition module is used for acquiring the temperature of more than one storage battery to obtain temperature sampling data;
the current acquisition module is used for acquiring the output current of the storage battery pack and acquiring current sampling data;
the electric quantity calculation module is connected with the voltage acquisition module, the temperature acquisition module and the current acquisition module and is used for calculating the residual electric quantity of the storage battery pack according to the voltage sampling data, the temperature sampling data and the current sampling data;
the controller is connected with the electric quantity calculation module and the display and is used for controlling the display to display the residual electric quantity of the storage battery pack.
2. The electric convertible vehicle power management device of claim 1, wherein the voltage acquisition module comprises a first sampling wire, a second sampling wire and N-1 third sampling wires, the first sampling wire is connected to the positive power line, the second sampling wire is connected to the negative power line, and each third sampling wire is correspondingly connected to one connecting bar.
3. The electric convertible car power management device of claim 1, characterized in that the temperature acquisition module comprises M temperature sensors, each temperature sensor is correspondingly connected with a connecting strip, M is an integer and M is less than or equal to N.
4. The electric convertible vehicle power management device of claim 1, characterized in that the current collection module comprises a current transformer for sensing a current flowing through the positive power line.
5. The electric convertible car power management device of claim 1, wherein the electric quantity calculation module is further configured to calculate an output voltage of the storage battery pack, an output current of the storage battery pack, and a temperature of the storage battery pack according to the voltage sampling data, the temperature sampling data, and the current sampling data;
the controller is also used for controlling the display to display the output voltage of the storage battery pack, the output current of the storage battery pack and the temperature of the storage battery pack.
6. The electric convertible car power management device of claim 1, characterized in that the controller is a programmable logic controller.
7. The electric convertible car power management device of claim 1, wherein the display is a liquid crystal display.
8. The electric utility vehicle power management device according to any one of claims 1 to 7, further comprising a buzzer;
the controller is still used for control when storage battery's residual capacity is less than first predetermined electric quantity buzzer sends first alarm signal storage battery's residual capacity is less than the second and controls when predetermineeing the electric quantity traction motor stop work of electric combined car storage battery's residual capacity is less than the third and controls when predetermineeing the electric quantity buzzer sends second alarm signal, first predetermined electric quantity is greater than the second is predetermine the electric quantity, the second is predetermine the electric quantity and is greater than the third is predetermine the electric quantity, first alarm signal's duration is first preset time, traction motor stop work's duration is the second and is preset time.
9. A power supply system of an electric road-rail vehicle comprises a storage battery pack, wherein the storage battery pack comprises N storage batteries which are connected in series, the negative electrode of the nth storage battery is connected with the positive electrode of the (N + 1) th storage battery through a conductive connecting strip, the positive electrode of the first storage battery is connected with a positive power line, the negative electrode of the nth storage battery is connected with a negative power line, N is not less than 1 and not more than 1, and N is an integer not less than 2, and the power supply system is characterized by further comprising a main brake switch, a positive junction box, a negative junction box, a charging socket, a first DC-DC conversion module, a second DC-DC conversion module and the power supply management device as claimed in any one of claims 1 to 8;
the positive power line is connected with the positive end of the charging socket, the positive end of the first DC-DC conversion module, the positive end of the second DC-DC conversion module, the positive end of the motor controller, the positive end of the steering pump motor and the positive end of the brake motor sequentially through the main brake switch and the positive junction box;
the negative power line is connected with a negative end of the charging socket, a negative end of the first DC-DC conversion module, a negative end of the second DC-DC conversion module, a negative end of the motor controller, a negative end of the steering pump motor and a negative end of the brake motor through the negative junction box;
the first DC-DC conversion module is used for converting the output voltage of the storage battery pack into the power supply voltage of a control loop and a lighting loop, and the second DC-DC conversion module is used for converting the output voltage of the storage battery pack into the power supply voltage of the power supply management device.
10. The electric convertible car power supply system of claim 9, wherein each storage battery is provided with a transparent box cover, and the transparent box cover is provided with a water replenishing hole;
the power supply system further comprises a water guide pipe, and the water guide pipe is sequentially connected with the water replenishing holes of each transparent box cover.
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| CN202022478427.6U CN214083946U (en) | 2020-10-30 | 2020-10-30 | Power management device and power supply system for electric highway and railway dual-purpose vehicle |
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