CN216033793U

CN216033793U - Pure electric driving system of road roller and road roller

Info

Publication number: CN216033793U
Application number: CN202121975391.0U
Authority: CN
Inventors: 席小鹭; 叶卫国; 刘荣光; 肖育波; 龙由辉
Original assignee: Hunan Changfeng Heavy Industry Technology Co ltd
Current assignee: Hunan Changfeng Heavy Industry Technology Co ltd
Priority date: 2021-08-22
Filing date: 2021-08-22
Publication date: 2022-03-15
Anticipated expiration: 2031-08-22

Abstract

The utility model discloses a pure electric driving system of a road roller and the road roller, comprising an HVU high-voltage junction box, a VCU vehicle control unit, a BMS battery pack management system, a PDU high-voltage distribution box, an MCU motor controller, a battery pack assembly, a motor, a sensor and a switch; the battery pack assembly is electrically connected with a PDU high-voltage distribution box through an HVU high-voltage junction box, and the PDU high-voltage distribution box is electrically connected with an MCU motor controller; the battery pack assembly is connected with the BMS battery pack management system, the PDU high-voltage distribution box and the MCU motor controller are connected with a VCU vehicle control unit through a bus, and the sensor and the switch are in communication connection with the VCU vehicle control unit; the MCU motor controller is connected with the motor; the utility model solves the problems that the hydraulic driving system of the traditional road roller has high cost, pollutes the environment and has large noise and is not suitable for the electric road roller any more.

Description

Pure electric driving system of road roller and road roller

Technical Field

The utility model relates to the technical field of vehicle driving devices, in particular to a pure electric driving system of a road roller.

Background

The traditional road roller adopts a high-power diesel engine as a power source, and the diesel engine drives a hydraulic pump to work so as to provide driving force for the walking and the jolt-squeeze of the whole machine. However, the oil consumption of the existing mainstream 32-ton traditional hydraulic road roller is more than 30L/h, the fuel cost per hour exceeds 180 yuan, and the cost of the traditional road roller adopting the diesel engine is far higher than that of the road roller adopting a pure electric driving system when the traditional road roller is used for a long time; in addition, the diesel engine is used as a power system, when the diesel engine works, a large amount of tail gas is discharged, the environment is polluted, huge noise is emitted, noise pollution is caused to drivers and surrounding workers, and the comfort of the working environment is influenced. With the wide popularization of electric vehicles, the original hydraulic driving system is no longer suitable for electric road rollers, and a pure electric driving road roller is lacked.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Based on the problems, the utility model provides a pure electric driving system of a road roller and the road roller, and solves the problems that a hydraulic driving system of a traditional road roller is high in cost, pollutes the environment, is high in noise and is not suitable for an electric road roller any more.

(II) technical scheme

Based on the technical problem, the utility model provides a pure electric driving system of a road roller, which comprises an HVU high-voltage junction box, a VCU vehicle controller, a BMS battery pack management system, a PDU high-voltage distribution box, an MCU motor controller, a battery pack assembly, a motor, a sensor for detecting the intention of a driver and a switch for reflecting the working state of a vehicle component, wherein the HVU high-voltage junction box is connected with the VCU vehicle controller; the battery pack assembly is electrically connected with a PDU high-voltage distribution box through an HVU high-voltage junction box, and the PDU high-voltage distribution box is electrically connected with an MCU motor controller; the battery pack assembly is connected with a BMS battery pack management system, the PDU high-voltage distribution box and the MCU motor controller are connected with a VCU vehicle control unit bus, and the sensor and the switch are in communication connection with the VCU vehicle control unit; the MCU motor controller is connected with a motor, and the motor is connected with a steering oil pump, a walking oil pump and a vibration oil pump of the road roller.

Further, the system also comprises an air conditioner and a PTC heater for regulating the temperature of the cab, wherein the air conditioner and the PTC heater are electrically connected with the PDU high-voltage distribution box and are connected with the VCU vehicle controller through a bus and a hard wire.

Furthermore, the system also comprises a water cooling unit for cooling the battery pack assembly, wherein the water cooling unit is electrically connected with the HVU high-voltage junction box and is in signal connection with the BMS battery pack management system.

Furthermore, the system also comprises a quick charging socket, and a charging port of the quick charging socket is connected with the HVU high-voltage junction box and used for charging the battery pack assembly.

Furthermore, the number of the quick charging sockets is two.

Further, the battery pack assembly comprises 6 independent battery packs combined in series and parallel.

Further, the battery pack is an H-box battery pack.

The utility model relates to a road roller which is provided with a pure electric driving system of the road roller.

(III) advantageous effects

The technical scheme of the utility model has the following advantages:

the electric road roller adopts a pure electric driving system, is more suitable for the electric road roller, adopts the battery pack to store electric energy as working energy, consumes 130 degrees of electricity per hour, and has lower cost compared with a hydraulic pump used by a fuel road roller; the pure electric drive does not generate tail gas in the use process, does not cause pollution to the environment, and is more green and environment-friendly; when the motor works, the noise caused by the system is very small, the vibration is small, the noise of the whole machine is reduced, and the comfort of the working environment is improved.

Drawings

The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the utility model in any way, and in which:

FIG. 1 is a schematic diagram of the energy transfer and distribution of the high voltage portion of a purely electric drive system for a road roller according to an embodiment of the utility model;

fig. 2 is a schematic diagram of the logic relationship of the low-voltage part of the pure electric drive system of the road roller according to the embodiment of the utility model.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

The utility model relates to a pure electric driving system of a road roller, and fig. 1 is a high-voltage electric block diagram of electric driving of the road roller, which is designed for energy transmission and distribution of the electric road roller and explains the realization of an electric scheme of the road roller in principle. A pure electric driving system of a road roller comprises a battery pack assembly consisting of 6 independent battery packs which are combined in series and parallel according to the voltage requirement of the system, an HVU high-voltage junction box electrically connected with the battery pack assembly, and two paths of quick charging sockets, a water cooling unit and a PDU high-voltage distribution box which are electrically connected with the HVU high-voltage junction box, wherein the PDU high-voltage distribution box is connected with an MCU (microprogrammed control unit) motor controller, an air conditioner and a PTC (positive temperature coefficient) motor, and the MCU motor controller is connected with a motor;

according to the utility model, 6 independent battery packs are used as energy storage units of the system, series-parallel connection combination is carried out according to the voltage requirement of the system, and the 6 battery packs are connected through an HVU high-voltage junction box to form a voltage platform meeting the requirement of the whole machine; the HVU high-voltage junction box is connected with the two quick-charging sockets, so that the whole machine adopts two quick-charging sockets to charge the battery, two quick-charging sockets are allowed to charge simultaneously, the charging port is directly connected with the HVU, and the battery pack is charged through the HVU; the whole machine is provided with a battery water cooling system, the HVU provides energy for the water cooling system, and when the battery pack has a cooling demand, the water cooling unit works to provide cooling water to cool the battery pack; the whole machine is also distributed through a PDU high-voltage distribution box and respectively supplies power to an MCU motor controller, an air conditioner and a PTC, wherein the MCU motor controller converts high-voltage direct current into three-phase alternating current to provide energy for the motor and converts electric energy into mechanical energy to drive the road roller to turn an oil pump, a walking oil pump and a vibration oil pump to work and provide power for the whole machine; the air conditioner provides refrigeration requirements for the cab; the PTC provides the heating requirements for the cab. The whole system takes the electric energy stored by the battery pack as the working energy of the whole machine, does not generate tail gas in the working process and does not cause pollution to the environment; the working noise of the motor is low, so that the working environment is more comfortable; the electricity is consumed at 130 degrees per hour, and the use cost is lower than 100 yuan per hour, so that the method is more economical.

Fig. 2 is a block diagram of electric driving low-voltage electric of the road roller, which explains the logical relationship of the low-voltage part of the electric system, and the VCU vehicle controller collects the vehicle state through a hard wire or a bus to realize the closed-loop control of the vehicle system. The BMS battery pack management system is connected with the water cooling unit, and the MCU motor controller is connected with the motor;

the vehicle controller is used as a core control component, and realizes the recognition of the intention of a driver, the working state of vehicle components and the like by collecting vehicle sensors and switching signals, so that a corresponding control strategy is executed; the vehicle control unit is connected with a BMS battery pack management system through a bus, detects the state of a battery pack through the bus, controls the charging and discharging functions of the battery pack, and simultaneously is connected with a water cooler, when the BMS detects that the internal temperature of the battery pack is overhigh, controls the water cooler to work as a battery pack system to cool down, and ensures that the battery pack works in the optimal state; the whole vehicle controller is connected with the PDU high-voltage distribution box through a bus, controls the PDU to provide high voltage for a whole vehicle high-voltage component according to the current driver demand, and can cut off the high-voltage power supply of the fault component through controlling the PDU when the whole vehicle controller acquires equipment fault; the vehicle control unit is connected with an MCU (motor controller) through a bus, the MCU is controlled according to the driving intention of a driver, when the MCU receives a vehicle control unit action instruction, a UVW three-phase power supply is provided for the motor, the motor is driven to output power, and the driver intention action is realized; the vehicle control unit is connected with the air conditioning system through a bus and a hard wire, when a driver sends an air conditioning request instruction to the vehicle control unit through an air conditioning panel key, the vehicle control unit judges the current state of the whole machine, if the current state of the whole machine has no limited air conditioning output condition, the vehicle control unit controls the PDU internal relay to provide high voltage for the air conditioning compressor or the PTC, and the air conditioning system starts to provide cold air or hot air for a cab.

In summary, the pure electric driving system of the road roller and the road roller have the following advantages:

The utility model adopts a pure electric driving system, is more suitable for an electric road roller, consumes 130 degrees of electricity per hour, and has lower cost compared with a hydraulic pump used by a fuel road roller; the pure electric drive does not generate tail gas in the use process, does not cause pollution to the environment, and is more green and environment-friendly; when the motor works, the noise caused by the system is very small, the vibration is small, the noise of the whole machine is reduced, and the comfort of the working environment is improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A pure electric driving system of a road roller is characterized by comprising an HVU high-voltage junction box, a VCU vehicle controller, a BMS battery pack management system, a PDU high-voltage distribution box, an MCU motor controller, a battery pack assembly, a motor, a sensor for detecting the intention of a driver and a switch for reflecting the working state of the vehicle component; the battery pack assembly is electrically connected with a PDU high-voltage distribution box through an HVU high-voltage junction box, and the PDU high-voltage distribution box is electrically connected with an MCU motor controller; the battery pack assembly is connected with a BMS battery pack management system, the PDU high-voltage distribution box and the MCU motor controller are connected with a VCU vehicle control unit bus, and the sensor and the switch are in communication connection with the VCU vehicle control unit; the MCU motor controller is connected with a motor, and the motor is connected with a steering oil pump, a walking oil pump and a vibration oil pump of the road roller.

2. A purely electric drive system for a road roller as claimed in claim 1, characterized in that it further comprises an air conditioner and a PTC heater for the temperature regulation of the cab, said air conditioner and PTC heater being electrically connected to the PDU high-voltage distribution box and to the VCU vehicle control unit via a bus and a hard wire.

3. The purely electric drive system of the road roller as claimed in claim 1, further comprising a water chiller unit for cooling the battery pack assembly, the water chiller unit being electrically connected to the HVU high voltage junction box and in signal connection with the BMS battery pack management system.

4. The purely electric driving system of the road roller as claimed in claim 1, further comprising a quick-charging socket, wherein a charging port of the quick-charging socket is connected with an HVU high-voltage junction box for charging the battery pack assembly.

5. A purely electric drive system for a roller as claimed in claim 4, wherein there are two said quick-charge receptacles.

6. The purely electric drive system of the road roller as claimed in claim 1, wherein the battery pack assembly comprises 6 independent battery packs combined in series and parallel.

7. A pure electric driving system of a road roller as claimed in claim 6, wherein the battery pack is an H-box battery pack.

8. A road roller comprising a purely electrically powered drive system for a road roller as claimed in any one of claims 1 to 7.