CN210680413U

CN210680413U - Power system for track tractor

Info

Publication number: CN210680413U
Application number: CN201921426246.XU
Authority: CN
Inventors: 王鹏; 王亚杰
Original assignee: Jiangsu Aiqu New Energy Technology Co Ltd
Current assignee: Jiangsu Aiqu New Energy Technology Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-06-05
Anticipated expiration: 2029-08-29

Abstract

The utility model belongs to the technical field of power equipment, concretely relates to driving system for track tractor. The power system is connected with the driving motor, the air compressor and the DC/DC module, the power system comprises a lithium battery pack, a management module, a power distribution module and a diagnosis display module, the lithium battery pack is respectively connected with the management module and the power distribution module, the management module is further respectively connected with the power distribution module and the diagnosis display module, the power distribution module is further connected with the driving motor, the air compressor and the DC/DC module, and the management module is used for controlling the power distribution module to distribute electric energy of the lithium battery pack to the driving motor, and the air compressor and the DC/DC module. The method is used for solving the problem of inconsistent power distribution of the lithium battery pack of the track tractor. The utility model discloses a management control module control power distribution module carries out automatic allocation to the electric energy of lithium cell group, has effectively strengthened the life of lithium cell group.

Description

Power system for track tractor

Technical Field

The utility model belongs to the technical field of power equipment, concretely relates to driving system for track tractor.

Background

Along with the vigorous development of urban rail transit, more and more track tractors are put into use, and when the electrodynamic type tractor that uses at present provides power with the electric energy, all use lead accumulator as the power energy, can appear that the continuation of the journey mileage is short, and it is loaded down with trivial details to charge, maintains frequent scheduling problem. With the development of domestic new energy automobiles in recent years, the technology of the lithium battery is greatly developed, and the lithium battery is superior to a lead-acid battery in the field of high-power electricity utilization in terms of cost and technology. But at present, a lithium battery power system based on a rail tractor has not been researched too much.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a driving system for rail tractor for solve the problem that the lithium cell group power distribution of rail tractor is uncoordinated and battery protection level is low.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a power system for track traction vehicle, includes driving motor, air compressor machine and DC/DC module, still includes driving system, driving system connects driving motor, air compressor machine and DC/DC module, and wherein driving system includes lithium cell group, management module, power distribution module and diagnosis display module, lithium cell group connects respectively management module and power distribution module, management module still respectively with power distribution module and diagnosis display module connect, power distribution module still connects driving motor, air compressor machine and DC/DC module, management module is used for controlling power distribution module distributes the electric energy of lithium cell group and gives driving motor, air compressor machine and DC/DC module, DC/DC module still connects gradually low voltage battery and low pressure annex.

Further, the management module comprises a state sampling unit, a distribution control unit, a battery protection unit and a CAN communication module, wherein the state sampling unit is connected with the lithium battery pack and used for collecting state information of the lithium battery pack as a data base, the distribution control unit is connected with the state sampling unit and the power distribution module and used for controlling the power distribution module to realize power distribution according to the current state of the lithium battery pack, the distribution control unit is also connected with the diagnosis display unit through the CAN communication module and used for receiving a control instruction request of the diagnosis display unit, and the battery protection unit is used for protecting the normal power supply of the battery.

Further, the power distribution module comprises a power distribution unit and a loop protection unit, the power distribution unit is connected with the distribution control unit, the power distribution unit is further connected with the driving motor, the air compressor and the DC/DC module, and the loop protection unit is used for protecting an output end loop of the power distribution unit.

Furthermore, the diagnosis display module comprises a data display unit and an electric control unit, the data display unit and the electric control unit are connected with the distribution control unit through a CAN communication module, the electric control unit controls the power system to be powered on and powered off, and the data display unit is used for displaying the state information of the lithium battery pack collected by the management module.

Further, the power distribution unit and the distribution control unit are in enabling connection.

Further, the charging pile is connected with the lithium battery pack and used for charging the lithium battery pack.

The utility model has the advantages that:

1. the utility model provides a control system effectively solves the problem that the power distribution system of the traction rail car is inconsistent in power distribution, and the service life of the lithium battery pack is effectively prolonged by controlling the power distribution module to switch the on-off of the lithium battery pack and the follow-up circuit through the management control module;

2. the power system is internally provided with a protection module which judges according to the real-time state of the lithium battery pack to realize the protection of the lithium battery pack;

3. and the state of the battery is displayed and the power-on and power-off control operation is carried out through a friendly man-machine interface.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a block diagram of an overall connection according to an embodiment of the present invention;

reference numerals:

1-driving a motor; 2, an air compressor; a 3-DC/DC module; 4-charging pile; 5-a power system; 51-lithium batteries; 52-a management module; 521-a state sampling unit; 522-a distribution control unit; 523-battery protection unit; 524-CAN communication module; 53-a power distribution module; 531-power distribution unit; 532-loop protection unit; 54-a diagnostic display module; 541-a data display unit; 542-an electronic control unit; 6-driving wheels; 7-a gas storage tank; 8-low voltage battery; 9-Low pressure Accessories.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

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," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

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 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 the present invention can be understood according to specific situations by those skilled in the art.

Examples

As shown in fig. 1, the utility model provides a power system for a rail tractor, which comprises a driving motor, an air compressor, a DC/DC module, and a power system, wherein the power system is connected with the driving motor, the air compressor and the DC/DC module, the power system comprises a lithium battery pack, a management module, a power distribution module and a diagnosis display module, the lithium battery pack is respectively connected with the management module and the power distribution module, in this embodiment, the management module adopts a management module with model number BMC001-03D of plerd corporation, the power distribution module adopts a distribution module with model number PLD-PDU01-02, the management module is further respectively connected with the power distribution module and the diagnosis display module, the diagnosis display module specifically adopts a human-computer interaction interface with model number DMT8048T070_15WT, the power distribution module is further connected with the driving motor, the air compressor and the DC/DC module, the management module is used for controlling the power distribution module to distribute electric energy of the lithium battery pack to the driving motor, the air compressor and the DC/DC module, meanwhile, the management module also has the function of protecting the lithium battery pack, and the DC/DC module is sequentially connected with the low-voltage storage battery and the low-voltage accessories.

Wherein, the management module comprises a state sampling unit, a distribution control unit, a battery protection unit and a CAN communication module, the state sampling unit adopts a LTC6803 battery monitor to connect with the lithium battery pack, the state information of the voltage, the temperature and the insulation resistance value of the single battery of the lithium battery pack is collected as a data base, the distribution control unit is connected with the state sampling unit, the diagnosis display module and the power distribution module, the distribution control unit receives the power-on and power-off request sent by the diagnosis display module and controls the power distribution module to realize power distribution according to whether the current state of the lithium battery pack meets the power-on and power-off requirements or not, wherein, whether the state of the lithium battery pack meets the power-on and power-off requirements or not is judged according to the battery protection unit, if the state information of the lithium battery pack collected by the state sampling unit judges that the lithium battery pack has a fault, the battery protection unit is used for protecting the battery from normal power supply, and specifically, if the battery protection unit does not have the maximum voltage value, the minimum voltage value, the insulation resistance value and the maximum and minimum temperature value of the single battery, which are acquired by the state sampling unit, within a preset reasonable range value, the protection measure for disconnecting the power supply of the lithium battery pack is taken.

In this embodiment, the power distribution module includes a power distribution unit and a loop protection unit, the power distribution unit is connected with the distribution control unit, wherein the power distribution unit is in enabling connection with the distribution control unit, the power distribution unit is further connected with a driving motor, an air compressor and a DC/DC module, the power distribution unit adopts a contactor with a taike model of EV500, the operation of disconnecting and closing the lithium battery pack and the subsequent power utilization loop is performed according to an enabling signal of the distribution control unit, the loop protection unit is used for protecting an output end loop of the power distribution unit, and specifically, fuses are connected in series in each branch of the power distribution unit and the subsequent circuit.

The embodiment also comprises a friendly human-computer interface diagnosis display module, the diagnosis display module comprises a data display unit and an electric control unit, the data display unit and the electric control unit are connected with the distribution control unit through a CAN communication module, the electric control unit controls the power system to be powered on and powered off, the sending of the power-on and power-off instructions is specifically completed according to the operation of a driver, namely, the driver sends the power-on and power-off instructions, then the power-on and power-off instructions are transmitted to the management module through the CAN communication module, whether the power-on and power-off requirements are met or not is judged through the management module, the power-on and power-off operation is carried out again, the data display unit is used for displaying state.

In addition, still include and fill electric pile, fill electric pile and connect lithium cell group for charge for lithium cell group.

The specific working principle is that the management module collects and judges the state information of the lithium battery pack, judges the current state of the lithium battery pack, controls the on-off of the power distribution module to realize the connection of the lithium battery pack and a subsequent circuit through the power distribution module, wherein the management module is also connected with a diagnosis display module through a CAN communication module, the diagnosis display module is embodied as a human-computer interface, sends a power-on and power-off control instruction to the management module through the diagnosis display module, and simultaneously CAN also display the state information of the current temperature, voltage, current and the like of the lithium battery pack in real time, in addition, the management module also has the function of protecting the lithium battery pack, and particularly collects the state information of the maximum and minimum temperature, the insulation resistance value, the maximum and minimum voltage and the like of the lithium battery pack through a state sampling unit therein, and compares the state information with a, if the sampling value is not within the range value, the lithium battery pack is judged to be in an abnormal fault state, the management module does not receive the power-on request sent by the diagnosis display module, and meanwhile, the power distribution module is controlled to be disconnected from the power supply of a subsequent circuit, so that the lithium battery pack is protected.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a driving system for track tractor, includes driving motor, air compressor machine and DC/DC module, its characterized in that: still include driving motor, air compressor machine and DC/DC module, wherein driving system includes lithium cell group, management module, power distribution module and diagnosis display module, lithium cell group connects respectively management module and power distribution module, management module still respectively with power distribution module and diagnosis display module connect, power distribution module still connects driving motor, air compressor machine and DC/DC module, management module is used for control power distribution module distributes the electric energy of lithium cell group and gives driving motor, air compressor machine and DC/DC module, DC/DC module still connects gradually low voltage battery and low pressure annex.

2. The power system for a rail tractor according to claim 1, wherein: the management module comprises a state sampling unit, a distribution control unit, a battery protection unit and a CAN communication module, wherein the state sampling unit is connected with the lithium battery pack and used for collecting state information of the lithium battery pack as a data base, the distribution control unit is connected with the state sampling unit and the power distribution module and used for controlling the power distribution module to realize power distribution according to the current state of the lithium battery pack, the distribution control unit is further connected with the diagnosis display unit through the CAN communication module and used for receiving a control instruction request of the diagnosis display unit, and the battery protection unit is used for protecting the battery from normal power supply.

3. The power system for a rail tractor according to claim 2, wherein: the power distribution module comprises a power distribution unit and a loop protection unit, the power distribution unit is connected with the distribution control unit, the power distribution unit is further connected with the driving motor, the air compressor and the DC/DC module, and the loop protection unit is used for protecting an output end loop of the power distribution unit.

4. The power system for a rail tractor according to claim 3, wherein: the diagnosis display module comprises a data display unit and an electric control unit, the data display unit and the electric control unit are connected with the distribution control unit through a CAN communication module, the electric control unit controls the power system to be powered on and powered off, and the data display unit is used for displaying the state information of the lithium battery pack collected by the management module.

5. The power system for a rail tractor according to claim 3, wherein: the power distribution unit is in enabling connection with the distribution control unit.

6. The power system for a rail tractor according to claim 1, wherein: the charging pile is connected with the lithium battery pack and used for charging the lithium battery pack.