CN111731113A - Pure electric shovel car - Google Patents
Pure electric shovel car Download PDFInfo
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- CN111731113A CN111731113A CN201910226394.5A CN201910226394A CN111731113A CN 111731113 A CN111731113 A CN 111731113A CN 201910226394 A CN201910226394 A CN 201910226394A CN 111731113 A CN111731113 A CN 111731113A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/306—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with telescopic dipper-arm or boom
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- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides a pure electric shovel car, and belongs to the technical field of electric shovel cars. The system comprises: the system comprises a vehicle body structure, a driving system, a battery system, a cooling system and a whole vehicle control system, wherein the vehicle body structure comprises a scraper vehicle chassis, a hydraulic bogie and a hydraulic scraper arm; the driving system comprises a power driving motor, a motor driver, an air compressor and a braking device; the battery system comprises a high-voltage power battery and a BMS high-voltage box; the cooling system comprises a water pump, a water tank and an air conditioning unit; the whole vehicle control system comprises a vehicle logic control unit, a 24V DC/DC converter and a remote control receiving unit. The electric scraper solves the problems of serious air and noise pollution generated by the scraper for the diesel engine mine in an underground roadway and easy abrasion of a brake system during heavy load downhill, and also solves the problems of small working radius and difficult transition of a cable type electric scraper.
Description
One, the technical field
The invention relates to the technical field of new energy vehicles, in particular to a pure electric shovel truck.
Second, background Art
At present, the domestic mining scraper adopts a diesel internal combustion engine as power, uses a traditional fuel automobile chassis, has a complex chassis structure and high cost, and cannot optimize the bearing capacity, the dead weight and the weight, the running stability and the safety, and mainly has the following defects: (1) the mine has narrow internal space and inconvenient gas circulation, and generates a large amount of harmful gas by taking an internal combustion engine as power, thereby seriously polluting the underground air and endangering the safety of personnel. (2) The working conditions of ascending and descending slopes in a mine are more, fuel consumption is serious when the internal combustion engine scraper vehicle ascends the slopes, a brake system is seriously abraded when heavy load descends the slopes, the working efficiency is low, the operation cost is high, and the use cost of enterprises is increased. (3) The internal combustion engine mining scraper has heavy load and great damage to underground ground. The cable formula electric shovel car of present volume production inserts electric wire netting in the pit through self high-pressure cable that carries several hundred meters, realizes electronic work, and it mainly has following shortcoming: (1) the cable type electric forklift requires a high-voltage power grid line to be designed underground, the implementation cost is extremely high, the underground environment is a humid and dark severe environment, the safety performance requirements of power grid insulation, anti-creeping and the like are extremely high, and the high use cost is caused for designers and enterprise use units. (2) The working range of the cable type electric forklift is limited by a vehicle-mounted high-voltage cable, the cable type electric forklift can only run within hundreds of meters near a power grid access point, the application range of the cable type electric forklift is greatly limited, the power grid access point of a vehicle needs to be manually transferred when the vehicle moves to a critical working range in the vehicle transfer process, the power grid access point needs to be opened on a moving path in the actual production process, the vehicle moves for a distance of thousands of meters, more than one day is usually needed, time waste is greatly caused, and the working efficiency is low.
Therefore, a pure electric scraper vehicle is needed to be designed, and the scraper vehicle works for mining scraper operation; removing air and noise pollution; feedback braking is added to absorb downhill power and prolong the service life of a braking system; and a grid-connected cable is removed, the working radius of the pure electric scraper is enlarged, and the vehicle transfer operation is simplified.
Third, the invention
The invention provides a pure electric scraper vehicle, which aims to solve the problems in the background technology.
The technical scheme of the invention is as follows: a pure electric shovel vehicle, comprising: the vehicle body structure is electrically connected with the driving system, the driving system is electrically connected with the battery system, the cooling system is connected with the battery system, the whole vehicle control system is electrically connected with the driving system, the battery system and the cooling system, the driving system is mechanically connected with the vehicle body structure, and the battery system is mechanically connected with the vehicle body structure.
The body structure includes scraper vehicle chassis, hydraulic pressure bogie and hydraulic pressure scraper arm, and the chassis bears other systems of electricelectric shovel car on the one hand, and scraper vehicle chassis, hydraulic pressure bogie realize on the one hand that electronic scraper car moves forward, moves back and turns to etc. and on the other hand hydraulic pressure scraper arm realizes the scraper function of ore raw materials.
The forklift chassis adopts a structure that a front body and a rear body are hinged, a hydraulic steering system is arranged at the hinged part to realize the steering function, a front differential and a rear differential are embedded in the forklift chassis, the chassis four-wheel drive movement is realized through a power drive motor, a hydraulic braking system is embedded in the forklift chassis, and the chassis braking is realized through a braking device.
The hydraulic shoveling arm is arranged on the front half part of the chassis and comprises a shoveling bucket and a shoveling hydraulic oil cylinder, the shoveling bucket is used for achieving shoveling functions through the inner container, and the shoveling hydraulic oil cylinder is used for achieving up-down movement of the shoveling arm through stretching of the oil cylinder.
The driving system comprises a driving motor, a motor driver, an air compressor and a braking device, wherein the motor driver controls a power driving motor and a hydraulic driving motor to provide mechanical power and hydraulic power for the whole vehicle, the power driving motor in the driving motor is connected with a chassis of the whole vehicle to realize the forward, backward and steering actions of the electric forklift, and the hydraulic driving motor in the driving motor is connected with a hydraulic loop to realize the actions of braking the vehicle, a hydraulic forklift arm and the like.
The battery system comprises a high-voltage power battery and a BMS high-voltage box, and is used for generating a high-voltage direct-current power supply for the whole vehicle through the power high-voltage battery and realizing the power control protection function of the whole vehicle through the BMS high-voltage box.
The high-voltage power battery comprises two groups of independent battery boxes: the battery box comprises a battery box body 1 and a battery box body 2, wherein the output end of the battery box body is provided with a high-voltage output positive end and a high-voltage output negative end, 600V high-voltage direct current can be output, and the battery box body is provided with a maintenance switch.
The high-voltage output end, the internal communication port and the heating port of the battery system are connected with the BMS high-voltage box, and the air-conditioning water pipeline is connected with the air-conditioning system.
The BMS high-voltage box is provided with two paths of power battery high-voltage input ports, two paths of internal communication ports and two paths of heating ports which are respectively connected with the battery pack 1 and the battery pack 2.
The BMS high-voltage box is provided with an air conditioner power supply port and an air conditioner communication port which are connected with a cooling system, a whole vehicle control port of the BMS high-voltage box is connected with a whole vehicle control system, and a voltage output port of the BMS high-voltage box is connected with the whole vehicle control system and a driving system.
The cooling system comprises a water pump, a water tank and an air conditioning unit, and the cooling system is responsible for controlling the temperature of the power battery pack.
The water pump is connected with the water tank, the air conditioning unit, the battery pack 1 and the battery pack 2 through water pipelines, and cooling water circulates in sequence according to the water tank, the water pump, the air conditioning unit, the battery pack 1 and the battery pack 2.
The air conditioning unit is connected with the BMS high-voltage box.
The whole vehicle control system comprises a vehicle logic control unit, a 24V DC/DC converter and a remote control receiving unit, and the vehicle logic control unit, the 24V DC/DC converter and the remote control receiving unit control a whole vehicle electrical system.
The vehicle logic control unit communication line is connected with the battery system and the driving system.
The 24V DC/DC converter is connected with the BMS high-voltage box, and the output end of the 24V DC/DC converter is connected with the vehicle logic control unit, the remote control receiving unit, the driving system and the cooling system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Description of the drawings
FIG. 1 is a schematic structural diagram of a body of a pure electric shovel truck provided by the invention;
FIG. 2 is a schematic view of a pure electric shovel vehicle driving system provided by the invention;
FIG. 3 is a schematic view of a battery system of a pure electric scraper vehicle provided in accordance with the present invention;
FIG. 4 is a schematic view of a cooling system of a pure electric shovel provided by the invention;
fig. 5 is a schematic view of a control system of a complete pure electric forklift truck provided by the invention.
Fifth, detailed description of the invention
The invention provides a pure electric forklift, which can meet the environmental protection requirements of zero emission and zero pollution, reduce noise pollution, get rid of the limitation of a power grid cable, and realize flexible and efficient work.
The structural schematic diagram of the pure electric scraper truck provided by the invention is shown in fig. 1-5, and specifically comprises the following components: the vehicle body structure is electrically connected with the driving system, the driving system is electrically connected with the battery system, the cooling system is connected with the battery system, the whole vehicle control system is electrically connected with the driving system, the battery system and the cooling system, the driving system is mechanically connected with the vehicle body structure, and the battery system is mechanically connected with the vehicle body structure, and the specific content is as follows:
(1) vehicle body structure
The body structure is used as a body of the scraper vehicle and is responsible for carrying all equipment of the vehicle on one hand and also responsible for moving and scraping actions of the vehicle on the other hand.
As shown in fig. 1, the vehicle body structure includes: the hydraulic shovel comprises a shovel truck chassis, a hydraulic bogie and a hydraulic shovel arm, wherein the shovel truck chassis, the hydraulic bogie and the hydraulic shovel arm are sequentially and mechanically connected.
The forklift chassis adopts a structure that a front body and a rear body are hinged, a hydraulic steering system is arranged at the hinged part to realize the steering function, a front differential and a rear differential are embedded in the forklift chassis, the chassis four-wheel drive movement is realized through a power drive motor, a hydraulic braking system is embedded in the forklift chassis, and the chassis braking is realized through a braking device.
The hydraulic steering engine comprises a left hydraulic arm and a right hydraulic arm, when the vehicle turns left, the left hydraulic arm contracts, the right hydraulic arm extends, and when the vehicle turns right, the same is true.
The hydraulic shoveling arm is arranged on the front half part of the chassis and comprises a shoveling bucket and a shoveling hydraulic oil cylinder, the shoveling bucket is used for achieving shoveling functions through the inner container, and the shoveling hydraulic oil cylinder is used for achieving up-down movement of the shoveling arm through stretching of the oil cylinder.
(2) Drive system
As shown in fig. 2, the driving system includes two driving motors, a motor driver, an air compressor and a brake device, one driving motor is a vehicle main power driving motor, and the motor is a six-phase synchronous reluctance motor and is directly connected with a front and rear vehicle body differential axle; one is a hydraulic system driving motor which is an asynchronous alternating current motor and is directly connected with the hydraulic system.
The motor drivers are two in total, one is a vehicle main driving motor driver and is respectively electrically connected with a vehicle main driving motor, a battery system and a whole vehicle control system; one is a hydraulic system driving motor driver which is respectively electrically connected with a hydraulic system driving motor, a battery system and a whole vehicle control system.
The air compressor and the braking device are connected with the vehicle body structure. The braking device comprises a braking valve, a relay valve, a braking air pump and the like, and the vehicle braking logic is kept to be the default brake action.
In the working process of the vehicle, the driving motor works under a traction working condition, and the high-voltage power battery outputs energy to drive the vehicle to move forwards; when the vehicle brakes or goes downhill, the power driving motor works under a feedback working condition, the driving system can perform feedback braking action, charge the battery and absorb partial energy, on one hand, the power energy of the vehicle can be recycled, on the other hand, the use frequency of the brake device can be reduced, and the service life of the brake device is prolonged. The air compressor automatically works, and the braking device adopts braking maintaining logic to ensure the running safety of the vehicle.
(3) Battery system
As shown in fig. 3, the battery system includes: high-voltage power battery and BMS high-voltage box, this part provides high-voltage direct current power supply for whole car, and high-voltage power battery and BMS high-voltage box are electric connection in proper order.
The high-voltage power battery comprises two groups of independent battery boxes: the battery box comprises a battery box body 1 and a battery box body 2, wherein the output end of the battery box body is provided with a high-voltage output positive end and a high-voltage output negative end, 600V high-voltage direct current can be output, and the battery box body is provided with a maintenance switch which can ensure the safety of personnel in the maintenance process.
The high-voltage output end, the internal communication port and the heating port of the battery system are connected with the BMS high-voltage box, the BMS high-voltage box can monitor the running state of the battery in real time, a pre-charging loop is provided, the running state of the battery is reasonably controlled, the service life of the battery is prolonged, an air conditioner water flow pipeline is connected with the air conditioning system, the high-voltage power battery needs to work at a certain temperature, the excessive temperature can cause dangerous conditions such as explosion, and the air conditioning unit must work normally and stably.
The BMS high-voltage box is provided with two paths of power battery high-voltage input ports, two paths of internal communication ports and two paths of heating ports which are respectively connected with the battery pack 1 and the battery pack 2, the BMS high-voltage box is provided with an air conditioner power supply port and an air conditioner communication port which are connected with a cooling system, a whole vehicle control port of the BMS high-voltage box is connected with a whole vehicle control system, and a voltage output port of the BMS high-voltage box is connected with the whole vehicle control.
The direct current of the battery system is connected to the motor controller through the high-voltage distribution box, and the motor controller converts the direct current into alternating current to enable vehicle-mounted related equipment to normally operate.
(4) Cooling system
As shown in fig. 4, the cooling system includes: the water pump, the water tank and the air conditioning unit are in charge of temperature control of the power battery pack and are sequentially connected.
The water pump is connected with the water tank, the air conditioning unit, the battery pack 1 and the battery pack 2 through water pipelines, and cooling water circulates in sequence according to the water tank, the water pump, the air conditioning unit, the battery pack 1 and the battery pack 2.
The air conditioning unit is connected with the BMS high-voltage box.
(5) Vehicle control system
As shown in fig. 5, the vehicle control system is a vehicle logic control unit, a 24V DC/DC converter and a remote control receiving unit, and controls the vehicle electrical system. The vehicle logic control unit communication line is connected with the battery system and the driving system; the 24V DC/DC converter is connected with the BMS high-voltage box, and the output end of the converter is connected with the vehicle logic control unit, the remote control receiving unit, the driving system and the cooling system.
The vehicle controller receives instructions of a driver through the opening degree condition of an accelerator pedal, sends signals to a communication bus, a motor driver receives the instructions and automatically adjusts the torque output condition of the motor according to the weight of the vehicle and the conditions of ascending and descending, the rotating speed and the power of the motor are adjusted after internal calculation of the motor controller, the electric energy stored by a power battery is converted into the electric energy required by the driving motor, the motor is controlled to output a given torque through the change of three-phase voltage and current, and the driving of the vehicle is realized. The cab control panel has a shift switch.
The technical effects of the invention are mainly reflected in the following aspects: the vehicle controller manages, coordinates and monitors a vehicle driving system, a battery system, a cooling system and the like through the rechargeable battery driving motor, has a comprehensive instrument interface function, can remotely display vehicle state information, and has perfect fault diagnosis and processing capacity so as to improve the vehicle energy utilization efficiency and ensure the safety and the reliability.
In summary, the embodiment of the present invention provides a pure electric shovel, which includes: the system comprises a vehicle body structure, a driving system, a battery system, a cooling system and a whole vehicle control system; the vehicle body structure is used for bearing all devices of the vehicle and the movement and carrying actions of the vehicle, the driving system converts electric energy output by the power battery into mechanical energy to push the carrying shovel to move forward, the kinetic energy is converted into electric energy to be fed back to the battery system during braking, the cooling system is used for carrying out temperature control on the power battery pack, and the whole vehicle control system is used for managing, coordinating and monitoring the whole vehicle driving system, the battery system, the cooling system and the like. The invention can realize the environmental protection requirements of zero emission and zero pollution, reduce noise pollution, and simultaneously the scraper vehicle can get rid of the limitation of the power grid cable, thereby realizing flexible and efficient work.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A pure electric shovel vehicle, comprising: the vehicle body structure is electrically connected with the driving system, the driving system is electrically connected with the battery system, the cooling system is electrically connected with the battery system, and the whole vehicle control system is electrically connected with the driving system, the battery system and the cooling system;
the body structure is used for bearing other systems of the pure electric shovel car through the chassis, ensuring that the pure electric shovel car cannot be damaged or deformed under various stresses when in normal use, realizing the actions of advancing, retreating, steering and the like of the electric shovel car through the shovel car chassis and the hydraulic bogie, and realizing the shovel function of ore raw materials through the hydraulic shovel arm.
The driving system is used for controlling the power driving motor and the hydraulic driving motor through the motor driver, providing mechanical power and hydraulic power for the whole vehicle, realizing the forward, backward and steering actions of the electric forklift through the connection of the power driving motor in the driving motor and a chassis of the whole vehicle, normally driving under various driving conditions, and realizing the functions of vehicle braking, hydraulic forklift arm action and the like through the connection of the hydraulic driving motor in the driving motor and a hydraulic loop.
The battery system is used for generating a high-voltage direct-current power supply used by the whole vehicle through the power high-voltage battery, storing electric energy when the battery is charged through the charging pile, and realizing the power control protection function of the whole vehicle through the BMS high-voltage box; the BMS high-voltage box is used for improving the utilization rate of the battery, preventing the battery from being overcharged and overdischarged, monitoring the state of the battery, prolonging the service life of the battery, and controlling the charging and discharging of the power battery and pre-charging.
The cooling system is used for absorbing heat emitted by the power battery, preventing the power battery from being overheated, keeping the power battery to work within a normal temperature range, and realizing the temperature control function of the power battery through the water pump, the water tank and the air conditioning unit.
The vehicle control system is used for sending the running states of the driving system, the cooling system and the battery system in real time, receiving a control signal of the vehicle control unit, realizing the electric control of the body structure, the driving system and the cooling system of the pure electric forklift through the vehicle control unit, and realizing the remote control function of the electric forklift through the remote control system.
2. The blade electric vehicle of claim 1, wherein the body structure comprises: the hydraulic shovel comprises a shovel truck chassis, a hydraulic bogie and a hydraulic shovel arm, wherein the shovel truck chassis, the hydraulic bogie and the hydraulic shovel arm are sequentially and mechanically connected.
The forklift chassis adopts a structure that a front body and a rear body are hinged, a hydraulic steering system is arranged at the hinged part to realize the steering function, a front differential and a rear differential are embedded in the forklift chassis, the chassis four-wheel drive movement is realized through a power drive motor, a hydraulic braking system is embedded in the forklift chassis, and the chassis braking is realized through a braking device.
The hydraulic shoveling arm is arranged on the front half part of the chassis and comprises a shoveling bucket and a shoveling hydraulic oil cylinder, the shoveling bucket is used for achieving shoveling functions through the inner container, and the shoveling hydraulic oil cylinder is used for achieving up-down movement of the shoveling arm through stretching of the oil cylinder.
3. The electric traction shovel of claim 1, wherein the drive system comprises: the air compressor and the braking device are electrically connected in sequence, and the air compressor and the braking device are connected, and the part is an electrical and mechanical part for driving and braking the vehicle.
The driving motors are two in total, one is a vehicle power driving motor, and the motor is a six-phase synchronous reluctance motor and is directly connected with a front vehicle body differential bridge and a rear vehicle body differential bridge; one is a hydraulic power driving motor, and the motor is an asynchronous alternating current motor and is directly connected with a hydraulic system.
The motor drivers are two in total, one is a vehicle main driving motor driver and is respectively connected with a vehicle main driving motor, a battery system and a whole vehicle control system; one is a hydraulic system driving motor driver which is respectively connected with a hydraulic system driving motor, a battery system and a whole vehicle control system.
The air compressor is a main body in an air source device, is used for converting mechanical energy of a motor into gas pressure energy, and is an air pressure generating device for compressing air.
The braking device provides external force which acts on the automobile and is opposite to the driving direction of the automobile, and the external force is used for controlling the braking of the pure electric shovel car.
The air compressor and the brake device are connected with a vehicle body structure.
4. The electric traction shovel of claim 1, wherein the battery system comprises: high-voltage power battery and BMS high-voltage box, this part provides high-voltage direct current power supply for whole car, and high-voltage power battery and BMS high-voltage box are electric connection in proper order.
The high-voltage power battery comprises two groups of independent battery boxes: the battery box comprises a battery box body 1 and a battery box body 2, wherein the output end of the battery box body is provided with a high-voltage output positive end and a high-voltage output negative end, 600V high-voltage direct current can be output, and the battery box body is provided with a maintenance switch.
The high-voltage output end, the internal communication port and the heating input port of the high-voltage power battery are connected with the BMS high-voltage box, and the air conditioner water pipeline is connected with an air conditioner system.
The BMS high-voltage box is provided with two paths of power battery high-voltage input ports, two paths of internal communication ports and two paths of heating ports, and the two paths of internal communication ports and the two paths of heating ports are respectively connected with the battery pack 1 and the battery pack 2.
The BMS high-voltage box is provided with an air conditioner power supply port and an air conditioner communication port, is connected with the cooling system and is used for controlling the cooling system.
The BMS high-voltage box is provided with a whole vehicle control port and a voltage output port, the whole vehicle control port is connected with a whole vehicle control system, and the voltage output port is connected with the whole vehicle control system and a driving system.
5. The electric traction shovel of claim 1, wherein the cooling system comprises: the water pump, the water tank and the air conditioning unit are in charge of temperature control of the power battery pack and are sequentially connected.
The water pump is connected with the water tank, the air conditioning unit, the battery pack 1 and the battery pack 2 through water pipelines, and cooling water circulates in sequence according to the water tank, the water pump, the air conditioning unit, the battery pack 1 and the battery pack 2.
The air conditioning unit is connected with the BMS high-voltage box.
6. The electric traction shovel of claim 1, wherein the vehicle control system comprises: the system comprises a vehicle logic control unit, a 24V DC/DC converter and a remote control receiving unit, wherein the vehicle logic control unit controls the electric system of the whole vehicle.
And the vehicle logic control unit communication line is connected with the battery system and the driving system and is used for generating logic signals for controlling the whole vehicle.
The 24V DC/DC converter is connected with the BMS high-voltage box, and the output end of the 24V DC/DC converter is connected with the vehicle logic control unit, the remote control receiving unit, the driving system and the cooling system.
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| CN201910226394.5A CN111731113A (en) | 2019-03-25 | 2019-03-25 | Pure electric shovel car |
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| CN201910226394.5A CN111731113A (en) | 2019-03-25 | 2019-03-25 | Pure electric shovel car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523282A (en) * | 2021-01-14 | 2021-03-19 | 南通润邦重机有限公司 | Pure electric variable-frequency composite drive material grabbing machine |
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| CN208105343U (en) * | 2018-03-23 | 2018-11-16 | 姚耀春 | A kind of energy storage electric power scraper machine |
| CN108612138A (en) * | 2018-06-27 | 2018-10-02 | 大连理工高邮研究院有限公司 | Green novel energy source scraper |
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| CN112523282A (en) * | 2021-01-14 | 2021-03-19 | 南通润邦重机有限公司 | Pure electric variable-frequency composite drive material grabbing machine |
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Application publication date: 20201002 |