CN114537242A - 100-ton pure-electric-drive mining dump truck - Google Patents
100-ton pure-electric-drive mining dump truck Download PDFInfo
- Publication number
- CN114537242A CN114537242A CN202210252410.XA CN202210252410A CN114537242A CN 114537242 A CN114537242 A CN 114537242A CN 202210252410 A CN202210252410 A CN 202210252410A CN 114537242 A CN114537242 A CN 114537242A
- Authority
- CN
- China
- Prior art keywords
- oil
- motor
- lifting
- power
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005065 mining Methods 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 76
- 239000003921 oil Substances 0.000 claims description 37
- 239000010720 hydraulic oil Substances 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 238000004378 air conditioning Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- 230000009193 crawling Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 230000006872 improvement Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000009347 mechanical transmission Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00378—Air-conditioning arrangements specially adapted for particular vehicles for tractor or load vehicle cabins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T5/00—Vehicle modifications to facilitate cooling of brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
-
- 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
A100-ton pure electric drive mining dump truck comprises a frame, a walking platform, a cab arranged on the walking platform, a power system and a cooling system; the power system comprises a power battery pack, a converter cabinet, a traction motor, a steering pump, a lifting motor and a lifting pump, wherein the power battery supplies power to the traction motor, the steering motor and the lifting motor through a high-voltage box and the converter cabinet respectively; the second battery box group is arranged at the outer side position of the middle part of the frame; the cab is arranged on the left side of the walking platform, the converter cabinet is arranged on the right side of the walking platform, the traction motor is arranged in the middle of the frame and behind the gantry, and the steering motor, the steering pump, the lifting motor and the lifting pump are arranged on the inner side of the gantry. The high-power traction motor direct drive system is configured, the high-torque traction motor is adopted, energy loss caused by transmission of the gearbox is reduced, the problem that the gearbox needs to be maintained periodically is solved, and the stress of the whole vehicle layout is uniform.
Description
Technical Field
The invention relates to a dumper, in particular to a 100-ton pure electric drive mining dumper.
Background
The 100-ton mining dump truck is an off-highway vehicle applied to surface mines and large-scale engineering construction sites, and the existing mining truck basically adopts a diesel engine as power to drive the vehicle to run. Along with the improvement of the energy density of the power battery, the reduction of unit cost, the improvement of the reliability of the power battery system and the electromotion of the mining dump truck become trends.
At present, 100-ton mining dump trucks mainly have two types according to different transmission forms:
the other is mechanical transmission, the whole vehicle is driven by a diesel engine and a gearbox, and the diesel engine transmits power to wheels through the gearbox, a transmission shaft, a differential and a wheel reduction gear. Mechanical transmission mine car: the fuel vehicle has higher fuel consumption cost, high operation cost and high maintenance cost of an engine and a gearbox.
One is electric transmission, a diesel engine drives a generator to generate electricity, alternating current is transmitted to an electric wheel through a converter, and the electric wheel converts electric energy into driving force to be transmitted to wheels. Electric drive mine car: the oil consumption expense is higher, and the running cost is high, and electronic round dismouting is inconvenient.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a 100-ton pure electric drive mining dump truck, which is configured with a high-power traction motor direct drive system, and adopts a high-torque traction motor, so that the energy loss caused by transmission of a gearbox is reduced, the problem that the gearbox needs to be regularly maintained is avoided, meanwhile, no gear shifting is needed in the running process of the whole truck, the power output is more linear, and the pause caused by gear shifting of the gearbox is avoided; the traction motor adopts a frame middle-mounted type, and has simple structure and convenient installation.
In order to solve the technical problems, the technical scheme of the invention is as follows: a100-ton grade pure electric drive mining dump truck comprises a frame, a walking platform, a cab arranged on the walking platform, a power system and a cooling system;
the power system comprises a power battery pack, a converter cabinet, a traction motor, a steering pump, a lifting motor and a lifting pump, wherein the power battery supplies power to the traction motor, the steering motor and the lifting motor through a high-voltage box and the converter cabinet respectively;
the power battery pack comprises a first battery box group and a second battery box group, and the first battery box group is arranged in the middle of the frame and in front of the gantry through a mechanical support; the second battery box group is arranged at the outer side position of the middle part of the frame; the cab is arranged on the left side of the walking platform, the converter cabinet is arranged on the right side of the walking platform, and the left side and the right side of the walking platform are respectively provided with a crawling ladder; the traction motor is arranged in the middle of the frame and behind the gantry, and the steering motor, the steering pump, the lifting motor and the lifting pump are arranged on the inner side of the gantry.
The cooling system comprises a battery water cooling system, a motor air cooling system, a brake cooling system and an air conditioner heating and hydraulic oil thermal management system; the battery water cooling system comprises a plurality of water cooling units, and the water cooling units are used for cooling the battery box through a circulating water pipeline; the air cooling system comprises a cooling fan arranged above the traction motor, and the cooling fan is connected with a heat dissipation air duct of the traction motor and a converter cabinet through air pipes respectively; the brake cooling system comprises a lifting motor, a lifting pump, a lifting oil tank, a sub-cooler, a distribution valve bank, an on-board computer and a temperature sensor, when the vehicle does not lift, the on-board computer sends an instruction to the lifting motor, the lifting motor drives the lifting pump to operate, the lifting pump sucks oil from the lifting oil tank and pumps the oil to the distribution valve bank, the oil enters the air cooler for heat dissipation and cooling, cooled cooling oil respectively enters a left rear axle wet disc brake and a right rear axle wet disc brake, heat of the wet disc brakes is taken away to the lifting oil tank, and then the oil enters the next round of cooling circulation; the air-conditioning heating and hydraulic oil heat management system comprises an indoor unit, a water heater, a radiator assembly, a hydraulic system and an oil-water heat exchanger, wherein the indoor unit, the water heater, the radiator assembly, the hydraulic system and the radiator assembly are arranged in a cab, the hydraulic system and the radiator assembly form a first circulation pipeline, the oil-water heat exchanger and the hydraulic system form a second circulation pipeline, the oil-water heat exchanger, the water heater and the indoor unit form a third circulation pipeline, hydraulic oil in the first circulation pipeline dissipates heat through the radiator assembly, and hydraulic oil in the second circulation pipeline and water in the third circulation pipeline exchange heat through the oil-water heat exchanger.
As an improvement, the converter cabinet is an integrated converter cabinet integrating a main converter and an auxiliary converter; a hollowed hole is formed in the position, on the walking platform, of the converter cabinet, and a cable is led out of the converter cabinet through the hollowed hole.
In the converter cabinet, a power battery is used as the power supply input of the converter cabinet, and the power supply is supplied to a main inverter unit and a voltage reduction module through an internal pre-charging loop; the main inverter converts the direct current into alternating current of VVVF and then drives the traction motor; the voltage reduction module reduces the voltage of 500-1000 VDC to 500-700 VDC and outputs the voltage in three paths, wherein one path of voltage is output to the auxiliary inverter, and the inverted three-phase alternating current supplies power to the steering motor and the lifting motor; one path directly supplies power to the high-voltage direct-current load; one path is converted into 24VDC through DC/DC to supply power for a storage battery and a low-voltage load.
As an improvement, the first battery box group comprises a first battery box body and a second battery box body, the first battery box body and the second battery box body are in rigid connection, and are connected with the frame through a shock absorber after forming a whole; the second battery box group comprises a third battery box body, and the third battery box body is connected with the frame in a hanging mode.
As an improvement, the output end of the hydraulic system is respectively connected with the input end of the radiator assembly and the input end of a first heat exchange tube of the oil-water heat exchanger through a first three-way valve; the output end of the radiator assembly is respectively connected with the input end of the hydraulic system and the output end of the first heat exchange tube of the oil-water heat exchanger through a second three-way valve; the output end of a second heat exchange tube of the oil-water heat exchanger is connected with the input end of the water heater, the output end of the water heater is connected with the input end of the indoor unit, and the output end of the indoor unit is connected with the input end of the second heat exchange tube of the oil-water heat exchanger; and an electric control water valve is arranged on a pipeline between the water heater and the indoor unit.
Compared with the prior art, the invention has the following beneficial effects:
1. the high-power traction motor direct-drive system is configured, the high-torque traction motor is adopted, energy loss caused by transmission of the gearbox is reduced, the problem that the gearbox needs to be maintained regularly is solved, meanwhile, the whole vehicle does not need to be shifted in the running process, power output is linear, and pause and frustration caused by shifting of the gearbox are avoided; the traction motor adopts a frame middle-mounted type, so that the structure is simple and the installation is convenient;
2. the power battery, the walking board, the cab, the converter cabinet and the traction motor are reasonable in layout, the stress of the whole vehicle is uniform, and the empty axle-to-charge ratio is close to 1: 1;
3. the cab is arranged on the left side of the walking platform, the converter cabinet is arranged on the right side of the walking platform, and the view field of the cab is wider;
4. because the lifting time of the vehicle is short, the wet disc brake does not generate heat when the vehicle is lifted, and the lifting pump does not work when the vehicle runs, when the vehicle is not lifted for discharging, the lifting pump can be used as a cooling pump to provide circulating cooling oil for the wet disc brake, thereby integrally simplifying the configuration of a cooling system of the wet disc brake, reducing the equipment cost, saving the space, lightening the weight and reducing the energy consumption;
5. an oil-water heat exchanger is added in an air-conditioning heating system and a hydraulic oil heat management system, so that heat transfer between the hydraulic system and the air-conditioning heating system is realized, the temperature of the two systems is balanced and energy-saving, the heating power loss of the air conditioner is reduced, the heat dissipation energy consumption of the hydraulic oil is reduced, the hydraulic oil can be preheated without external heating at a place with low ambient temperature, and the safety is improved.
Drawings
Fig. 1 is a side schematic view of the dump truck.
Fig. 2 is a schematic view of a non-cargo dumper.
Fig. 3 is a perspective view of the dump truck frame.
Fig. 4 is a perspective view of the dumper frame.
Fig. 5 is a block diagram of the power system of the dump truck.
Fig. 6 is a schematic view of the air cooling system of the dump truck.
Fig. 7 is a schematic view of a brake cooling system of the dump truck.
Fig. 8 is a schematic diagram of an air conditioning heating and hydraulic oil thermal management system of the dump truck.
Fig. 9 is a schematic diagram of a main circuit of the dump truck.
Detailed Description
The invention is further described in the following with reference to the drawings.
As shown in fig. 1, the 100-ton pure electric drive mining dump truck comprises a frame 1, a walking platform 2, a cab 3 arranged on the walking platform 2, a power system and a cooling system.
As shown in fig. 5, the power system includes a power battery, a high-voltage box, a converter cabinet 7, an ac load, a DC load and a DC24V load, and the power battery supplies power to the ac load, the DC load and a DC24V load through the high-voltage box and the converter cabinet 7. The alternating current load comprises a traction motor 4, a steering motor and a lifting motor, the traction motor 4 drives a rear wheel through a transmission shaft and a drive axle, the steering motor drives a steering pump, and the lifting motor drives a lifting pump. The direct current load comprises a PTC heater, an air conditioner compressor and a battery water cooling unit, and the battery water cooling unit comprises four paths which respectively correspond to the four groups of battery packs. The DC24V load includes a cooling fan. The converter cabinet 7 is an integrated converter cabinet 7 integrating a main converter and an auxiliary converter, hollow holes are formed in the positions, corresponding to the converter cabinet 7, of the walking platform 2, cables are led out of the converter cabinet 7 through the hollow holes, and power batteries in the converter cabinet 7 serve as power supply input of the converter cabinet 7 and supply power to a main inverter unit and a voltage reduction module through an internal pre-charging loop; the main inverter converts the direct current into alternating current of VVVF and then drives a traction motor 4; the voltage reduction module reduces the voltage of 500-1000 VDC to 500-700 VDC and outputs the voltage in three paths, wherein one path of voltage is output to the auxiliary inverter, and the inverted three-phase alternating current supplies power to the steering motor and the lifting motor; one path directly supplies power to the high-voltage direct-current load; one path is converted into 24VDC through DC/DC to supply power for a storage battery and a low-voltage load. A centralized driving mode is adopted in pure electric transformation of a finished automobile transmission system, the arrangement mode of the whole automobile transmission system is similar to that of a driving structure of a traditional internal combustion engine automobile, a traction motor 4+ converter is used for replacing an original automobile diesel engine + gearbox system, and a power battery system is used for replacing an original automobile fuel system. The output torque of the traction motor 4 is transmitted to the left wheel and the right wheel through a mechanical transmission device such as a transmission shaft, a speed reducer and the like to drive the vehicle to run. Meanwhile, the original vehicle is powered by different motors instead of a steering pump, a lifting pump and an air conditioner compressor which are powered by a diesel engine, and the motors are powered and controlled by a converter. The power battery is a power source of the whole set of alternating current transmission system, supplies power to the converter under the traction working condition, the converter converts electric energy and distributes the electric energy to the traction motor 4, the auxiliary system and the 24V control electric system, and when the electric quantity of the power battery is insufficient, the energy can be supplemented through a ground charging station; under the braking working condition, the braking energy of the traction motor 4 is fed back to the power battery through the main inverter to charge the power battery.
As shown in fig. 2 to 4, the power battery pack comprises a first battery box group 5 and a second battery box group 6, wherein the first battery box group 5 is mounted in the middle of the frame 1 and in front of the gantry through a mechanical support; the second battery box group 6 is arranged at the outer side position of the middle part of the frame 1; the cab 3 is arranged on the left side of the walking platform 2, the converter cabinet 7 is arranged on the right side of the walking platform 2, and the left side and the right side of the walking platform 2 are respectively provided with a ladder stand 8; the traction motor 4 is arranged in the middle of the frame 1 and behind the gantry 10, and the steering motor, the steering pump, the lifting motor and the lifting pump are arranged on the inner side of the gantry 10. The power battery, the walking board 2, the cab 3, the converter cabinet 7 and the traction motor 4 are reasonable in layout, the stress of the whole vehicle is uniform, and the empty axle-to-load ratio is close to 1: 1. the first battery box group 5 comprises a first battery box body 51 and a second battery box body 52, wherein the first battery box body 51 and the second battery box body 52 are rigidly connected to form a whole and then are connected with the frame 1 through a shock absorber; the second battery box group 6 comprises a third battery cabinet body 61, and the third battery cabinet body 61 is connected with the frame 1 in a hanging manner.
The cooling system comprises a battery water cooling system, a motor air cooling system, a brake cooling system and an air conditioner heating and hydraulic oil heat management system.
The battery water cooling system comprises a plurality of water cooling units, and the water cooling units cool the battery box through circulating water pipelines.
As shown in fig. 6, the air cooling system includes a cooling fan 12 disposed above the traction motor 4, and the cooling fan 12 is connected to the heat dissipation air duct of the traction motor 4 and the converter cabinet 7 through respective air ducts 11. And an air inlet is formed in the top of the front surface of the converter cabinet 7, cooling air enters from the air inlet and is discharged from the air outlet after passing through the converter cabinet, the air pipe 11, the cooling fan 12 and the traction motor 4, and therefore heat of the converter cabinet and the traction motor is taken away.
As shown in fig. 7, the brake cooling system includes a lift motor, a lift pump, a lift tank, a sub-cooler, a distribution valve set, an on-board computer, and a temperature sensor. When the vehicle does not lift, the vehicle-mounted computer sends an instruction to the lifting motor, the lifting motor drives the lifting pump to operate, the lifting pump sucks oil from the lifting oil tank and pumps the oil to the distribution valve bank to enter the air cooler for heat dissipation and cooling, the cooled cooling oil respectively enters the left rear axle wet disc brake and the right rear axle wet disc brake, the heat of the wet disc brakes is taken away to the lifting oil tank, and then the cooled cooling oil enters the next round of cooling circulation. A temperature sensor is arranged on a pipeline of the cooling oil return lifting oil tank and used for detecting the temperature of the circulating cooling oil in real time, detected data are transmitted to a vehicle-mounted computer, and the vehicle-mounted computer is used for controlling the lifting motor and the air cooler in real time, so that the temperature rise of a cooling system of the wet disc brake can be controlled in real time on line. When the vehicle does not lift, the lifting pump performs the function of a cooling pump to provide circulating cooling oil for the vehicle wet disc brake. The temperature of the circulating cooling oil is monitored in real time through the temperature sensor, and the high-low switching operation of the lifting pump driving motor and the starting and stopping operation states of the cooling fan are controlled by following the temperature of the cooling oil. When the oil temperature is more than or equal to 80 ℃, the vehicle-mounted computer sends an instruction, the air cooler is started to dissipate heat of the circulating cooling oil, the lifting motor drives the lifting pump to operate at a high rotating speed of 2000r/min, and the lifting pump provides large-flow cooling oil for the wet disc brake, so that more heat can be taken away in unit time, and the cooling power is increased. When the oil temperature is less than or equal to 60 ℃, the vehicle-mounted computer sends an instruction, the air cooler stops radiating, the lifting motor drives the lifting pump to operate at a low rotating speed of 750r/min, the lifting pump only provides low-flow cooling oil for the wet disc brake and maintains the lubricating effect of the wet disc brake, the cooling power is reduced, and due to the reduction of the flow of the cooling oil, the pressure loss of a corresponding cooling oil pipeline is also reduced, so that the driving power of the lifting motor is further reduced, and the energy consumption is reduced.
As shown in fig. 8, the air-conditioning heating and hydraulic oil heat management system includes an indoor unit 17 installed in the cab 3, a water heater 16, a radiator assembly 14, a hydraulic system 13, and an oil-water heat exchanger 15. The water heater 16, the radiator assembly 14 and the oil-water heat exchanger 15 are all installed on the dumper, the heat exchange medium of the indoor unit 17 is water, the water heater 16 comprises an expansion water tank and a water pump, the medium water is circularly conveyed through the water pump, the oil-water heat exchanger 15 comprises a first heat exchange tube and a second heat exchange tube, the first heat exchange tube can exchange heat with the second heat exchange tube, and the radiator assembly 14 comprises a bent tube and a radiating fan. The hydraulic system 13 and the radiator assembly 14 form a first circulation pipeline, the oil-water heat exchanger 15 and the hydraulic system 13 form a second circulation pipeline, the oil-water heat exchanger 15, the water heater 16 and the indoor unit 17 form a third circulation pipeline, hydraulic oil in the first circulation pipeline dissipates heat through the radiator assembly 14, and hydraulic oil in the second circulation pipeline and water in the third circulation pipeline exchange heat through the oil-water heat exchanger 15. The output end of the hydraulic system 13 is connected with the input end of the radiator assembly 14 and the input end of the first heat exchange pipe of the oil-water heat exchanger 15 through a first three-way valve respectively; the output end of the radiator assembly 14 is respectively connected with the input end of the hydraulic system 13 and the output end of the first heat exchange pipe of the oil-water heat exchanger 15 through a second three-way valve; the output end of the second heat exchange tube of the oil-water heat exchanger 15 is connected with the input end of the water heater 16, the output end of the water heater 16 is connected with the input end of the indoor unit 17, and the output end of the indoor unit 17 is connected with the input end of the second heat exchange tube of the oil-water heat exchanger 15. An electric control water valve is arranged on a pipeline between the water heater 16 and the indoor unit 17. And (3) control strategy: when the ambient temperature is more than or equal to 20 ℃, the air conditioner does not heat, and the radiator assembly 14 works to cool the hydraulic oil; when the ambient temperature is less than 20 ℃ and the hydraulic oil temperature T is more than 90 ℃, the air conditioner heating and radiator assembly 14 works simultaneously; when the environmental temperature is less than 20 ℃ and the hydraulic oil temperature T (T is more than or equal to 60 ℃ and less than or equal to 90 ℃), the air conditioner heats, and the radiator assembly 14 does not work; when the ambient temperature is less than 20 ℃ and the hydraulic oil temperature T (T is less than 60 ℃), the air conditioner heats, the water heater 16 can be started to perform auxiliary heating when the air conditioner heating effect is poor, and the radiator assembly 14 does not work; the ambient temperature is very low and the water heater 16 runs at full power to heat the hydraulic oil and the air conditioner.
As shown in fig. 9, the pure electric mining dump truck high-voltage platform driving and charging integrated main circuit includes a vehicle-mounted traction system circuit and a ground distribution box circuit.
As shown in fig. 1, the vehicle-mounted traction circuit includes a traction motor 4M1, a traction motor 4M2, an inversion/rectification module G1 corresponding to the traction motor 4M1, an inversion/rectification module G2 corresponding to the traction motor 4M2, a normally closed three-phase ac contactor KM1, a normally closed three-phase ac contactor KM2, a normally open three-phase ac contactor KM3, a normally open three-phase ac contactor KM4, a power battery, a control connector X1, a control connector X3, a high-voltage three-phase ac charging connector X2 for charging the inversion/rectification module G1, and a high-voltage three-phase ac charging connector X4 for charging the inversion/rectification module G2. Be equipped with first three-phase power supply line between contravariant/rectifier module G1 and traction motor 4M1, be equipped with first three-phase charging line between high-pressure three-phase AC charging connector X2 and contravariant/rectifier module G1, be equipped with second three-phase power supply line between contravariant/rectifier module G2 and traction motor 4M2, be equipped with second three-phase charging line between high-pressure three-phase AC charging connector X4 and contravariant/rectifier module G2, contravariant/rectifier module G1 and contravariant/rectifier module G2 are connected with power battery through the charge-discharge line. Be equipped with three-phase normally closed contact KM1 on the first three-phase power supply line, be equipped with three-phase normally closed contact KM2 on the second three-phase power supply line, be equipped with three-phase normally open contact KM3 on the first three-phase charging line, be equipped with three-phase normally open contact KM4 on the second three-phase charging line. A connecting line between a No. 2 connecting point and a No. 3 connecting point of the control connector X1 is provided with a three-phase normally open contact KM1 and a three-phase alternating current contactor KM3 coil, a connecting line between a No. 4 connecting point and a No. 5 connecting point of the control connector X1 is provided with a three-phase alternating current contactor KM1 coil, a connecting line between a No. 2 connecting point and a No. 3 connecting point of the control connector X3 is provided with a three-phase normally open contact KM2 and a three-phase alternating current contactor KM4 coil, and a connecting line between a No. 4 connecting point and a No. 5 connecting point of the control connector X3 is provided with a three-phase alternating current contactor KM2 coil. The charging and discharging circuit and the positive end of the power battery are connected with switches K1 and K2 which are connected in parallel; and the charge and discharge line and the negative end of the power battery are connected with a switch K3. An alternating current sensor P1 is connected with the L1 of the traction motor 4M1, an alternating current sensor P5 is connected with the L3 of the traction motor 4M1, and an alternating voltage sensor P3 is connected between the L1 phase and the L2 phase of the first three-phase power supply line; an alternating current sensor P2 is connected with the L1 of the traction motor 4M2, an alternating current sensor P6 is connected with the L3 of the traction motor 4M2, and an alternating voltage sensor P4 is connected between the L1 phase and the L2 phase of the second three-phase power supply line.
The ground distribution box circuit comprises a single-phase alternating-current transformer T1, a single-phase alternating-current transformer T2, a single-phase alternating-current transformer T3, a single-phase alternating-current transformer T4, a three-phase alternating-current transformer R2, a three-phase alternating-current transformer R3 and a controller. When the power battery is charged: the single-phase alternating current transformer T1 is communicated with the No. 2 connecting point of the control connector X1 through a normally open contact KA1, the No. 3 connecting point of the control connector X1 is grounded, the single-phase alternating current transformer T2 is communicated with the No. 4 connecting point of the control connector X1 through a normally open contact KA2, and the No. 5 connecting point of the control connector X1 is grounded; the single-phase alternating-current transformer T3 is connected with the No. 2 connection point of the control connector X3 through a normally open contact KB1, the No. 3 connection point of the control connector X3 is grounded, the single-phase alternating-current transformer T4 is connected with the No. 4 connection point of the control connector X3 through a normally open contact KB2, and the No. 5 connection point of the control connector X3 is grounded; the point 1 of the control connector X1 and the point 1 of the control connector X3 simultaneously send confirmation signals to the controller, the controller controls the coils of the contactors KA2 and KB2 to be electrified, and after the normally-open contacts KA2 and KB2 are closed, the coils of the contactors KA1 and KB1 are electrified.
Main circuit control logic:
when the vehicle is in a running state, the three-phase alternating-current contactors KM1, KM2, KM3 and KM4 do not act, and at the moment, the traction motors 4G1 and G2 work normally and can be used as the traction motor 4 or a generator.
When a vehicle is in a charging state, the three-phase alternating current contactors KM1, KM2, KM3 and KM4 are powered on, the motor end is in a disconnected state, the ground charging box transmits 1140V-1375V three-phase alternating current after voltage reduction of the transformer to a vehicle alternating current bus, and the alternating current is rectified into 1550V-1800V direct current through a converter to charge a power battery system, and detailed working logic is as follows:
1) butting the control connectors X1, X2, X3 and X4 with the vehicle-mounted socket, and then pressing a charging button;
2) after the transformer and the power battery system in the vehicle-mounted traction system are subjected to self-checking, a charging confirmation signal is sent through a No. 1 connection point of a control connector X1 and X3, after a ground distribution box receives the charging confirmation signal, a controller controls coils of contactors KA2 and KB2 to be electrified, normally open contacts of contactors KA2 and KB2 are closed, coils of contactors KA1 and KB1 are electrified, coils of three-phase alternating-current contactors KM1 and KM2 are electrified, three-phase normally closed contacts of a three-phase alternating-current contactor KM1 and KM2 are disconnected to cut off the input of a traction motor 4, meanwhile, auxiliary normally open contacts are closed, coils of the three-phase alternating-current contactors KM3 and KM4 are electrified, and three-phase normally open contacts of the three-phase alternating-current contactors KM1 and KM2 are closed, so that the ground charging box conveys 1140V-1375V three-phase alternating current after the transformer is subjected to voltage reduction to a vehicle alternating-phase bus, and is rectified into 1550V-1800V to charge the direct-current battery system through the power converter.
In order to prevent the AC from being applied to the winding end of the traction motor 4 in the AC charging process, which causes the traction motor 4 to run and the vehicle to be out of control, the circuit has logic protection:
1) an electrical interlocking protection is arranged between the contactors KA1 and KA2, and between the contactors KB1 and KB 2;
2) an electric interlocking protection is arranged between the three-phase alternating current contactors KM1 and KM3, and between the three-phase alternating current contactors KM2 and KM 4;
3) the converter detects the actual current value through a current sensor arranged at the end of the traction motor 4, if current exists in the charging process, the charging is stopped immediately, and the three-phase alternating current contacts of the three-phase alternating current contactors KM2 and KM4 are disconnected.
The main circuit has the advantages as follows:
1. the 1800V high-voltage platform is firstly realized on the pure electric mining dump truck by changing the structural form of the main circuit, compared with the existing 800V voltage platform, the electric loss can be effectively reduced (by more than 50%), the charging efficiency is improved (the charging time is shortened by 42%), the power cable material is reduced by 50%, and the price of the power module is reduced by not less than 20%;
2. the bidirectional working characteristics of the vehicle-mounted converter are effectively utilized, the investment of ground charging equipment components is reduced, and the cost performance of the product is greatly improved;
3. the high-power high-voltage alternating current charging is used on a pure electric mining dump truck product for the first time, so that a power supply system high-voltage box can be integrated into a vehicle-mounted converter, the product integration level is improved, and the length of a power cable is effectively reduced.
Claims (5)
1. A100-ton grade pure electric drive mining dump truck comprises a frame, a walking platform, a cab arranged on the walking platform, a power system and a cooling system; the method is characterized in that:
the power system comprises a power battery pack, a converter cabinet, a traction motor, a steering pump, a lifting motor and a lifting pump, wherein the power battery supplies power to the traction motor, the steering motor and the lifting motor through a high-voltage box and the converter cabinet respectively;
the power battery pack comprises a first battery box group and a second battery box group, and the first battery box group is arranged in the middle of the frame and in front of the gantry through a mechanical support; the second battery box group is arranged at the outer side position of the middle part of the frame; the cab is arranged on the left side of the walking platform, the converter cabinet is arranged on the right side of the walking platform, and the left side and the right side of the walking platform are respectively provided with a crawling ladder; the traction motor is arranged in the middle of the frame and behind the gantry, and the steering motor, the steering pump, the lifting motor and the lifting pump are arranged on the inner side of the gantry;
the cooling system comprises a battery water cooling system, a motor air cooling system, a brake cooling system and an air conditioner heating and hydraulic oil thermal management system; the battery water cooling system comprises a plurality of water cooling units, and the water cooling units are used for cooling the battery box through a circulating water pipeline; the air cooling system comprises a cooling fan arranged above the traction motor, and the cooling fan is connected with a heat dissipation air duct of the traction motor and a converter cabinet through air pipes respectively; the brake cooling system comprises a lifting motor, a lifting pump, a lifting oil tank, a sub-cooler, a distribution valve bank, an on-board computer and a temperature sensor, when the vehicle does not lift, the on-board computer sends an instruction to the lifting motor, the lifting motor drives the lifting pump to operate, the lifting pump sucks oil from the lifting oil tank and pumps the oil to the distribution valve bank, the oil enters the air cooler for heat dissipation and cooling, cooled cooling oil respectively enters a left rear axle wet disc brake and a right rear axle wet disc brake, heat of the wet disc brakes is taken away to the lifting oil tank, and then the oil enters the next round of cooling circulation; the air-conditioning heating and hydraulic oil heat management system comprises an indoor unit, a water heater, a radiator assembly, a hydraulic system and an oil-water heat exchanger, wherein the indoor unit, the water heater, the radiator assembly, the hydraulic system and the radiator assembly are arranged in a cab, the hydraulic system and the radiator assembly form a first circulation pipeline, the oil-water heat exchanger and the hydraulic system form a second circulation pipeline, the oil-water heat exchanger, the water heater and the indoor unit form a third circulation pipeline, hydraulic oil in the first circulation pipeline dissipates heat through the radiator assembly, and hydraulic oil in the second circulation pipeline and water in the third circulation pipeline exchange heat through the oil-water heat exchanger.
2. The 100-ton-grade pure electric-drive mining dump truck according to claim 1, characterized in that: the converter cabinet is an integrated converter cabinet integrating a main converter and an auxiliary converter; a hollowed hole is formed in the position, on the walking platform, of the converter cabinet, and a cable is led out of the converter cabinet through the hollowed hole.
3. The 100-ton-grade pure electric-drive mining dump truck according to claim 2, characterized in that: in the converter cabinet, a power battery is used as the power supply input of the converter cabinet, and a main inverter unit and a voltage reduction module are supplied with power through an internal pre-charging loop; the main inverter converts the direct current into alternating current of VVVF and then drives a traction motor; the voltage reduction module reduces the voltage of 500-1000 VDC to 500-700 VDC and outputs the voltage in three paths, wherein one path of voltage is output to the auxiliary inverter, and the inverted three-phase alternating current supplies power to the steering motor and the lifting motor; one path directly supplies power to the high-voltage direct-current load; one path is converted into 24VDC through DC/DC to supply power for a storage battery and a low-voltage load.
4. The 100-ton pure electric drive mining dump truck according to claim 1, characterized in that: the first battery box group comprises a first battery box body and a second battery box body, the first battery box body and the second battery box body are in rigid connection, and are connected with the frame through a shock absorber after being integrated; the second battery box group comprises a third battery box body, and the third battery box body is connected with the frame in a hanging mode.
5. The 100-ton pure electric drive mining dump truck according to claim 1, characterized in that: the output end of the hydraulic system is connected with the input end of the radiator assembly and the input end of a first heat exchange pipe of the oil-water heat exchanger through a first three-way valve respectively; the output end of the radiator assembly is respectively connected with the input end of the hydraulic system and the output end of the first heat exchange tube of the oil-water heat exchanger through a second three-way valve; the output end of a second heat exchange tube of the oil-water heat exchanger is connected with the input end of the water heater, the output end of the water heater is connected with the input end of the indoor unit, and the output end of the indoor unit is connected with the input end of the second heat exchange tube of the oil-water heat exchanger; and an electric control water valve is arranged on a pipeline between the water heater and the indoor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210252410.XA CN114537242B (en) | 2022-03-15 | 2022-03-15 | 100-ton-level pure-electric-driven mining dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210252410.XA CN114537242B (en) | 2022-03-15 | 2022-03-15 | 100-ton-level pure-electric-driven mining dump truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114537242A true CN114537242A (en) | 2022-05-27 |
| CN114537242B CN114537242B (en) | 2023-10-27 |
Family
ID=81663852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210252410.XA Active CN114537242B (en) | 2022-03-15 | 2022-03-15 | 100-ton-level pure-electric-driven mining dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114537242B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116373715A (en) * | 2023-06-05 | 2023-07-04 | 湘电重型装备有限公司 | Large-tonnage pure electric wheel dumper |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8925661B2 (en) * | 2010-07-15 | 2015-01-06 | Hitachi Construction Machinery Co., Ltd. | Electric working vehicle |
| CN106080234A (en) * | 2016-06-21 | 2016-11-09 | 天津中科先进技术研究院有限公司 | Electric automobile heat management device |
| CN107539192B (en) * | 2016-06-29 | 2019-08-13 | 比亚迪股份有限公司 | A kind of electronic mine dumper |
| CN106394372B (en) * | 2016-10-12 | 2019-01-29 | 广州电力机车有限公司 | A kind of six wheel drive dumpers |
| CN208263957U (en) * | 2018-04-10 | 2018-12-21 | 广州电力机车有限公司 | A kind of new energy dumper |
| CN109927534B (en) * | 2019-03-20 | 2023-04-25 | 天津大学 | Thermal management system and control method for hybrid power heavy truck |
| CN110341501A (en) * | 2019-07-30 | 2019-10-18 | 河南赐福重工股份有限公司 | A kind of off-highway rigid dumper of pure electric vehicle |
| CN111114345A (en) * | 2019-12-31 | 2020-05-08 | 柳工(常州)矿山机械有限公司 | Pure electric alternating-current transmission dumper driving system |
| CN113320458A (en) * | 2021-06-25 | 2021-08-31 | 三一汽车制造有限公司 | Construction vehicle |
-
2022
- 2022-03-15 CN CN202210252410.XA patent/CN114537242B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116373715A (en) * | 2023-06-05 | 2023-07-04 | 湘电重型装备有限公司 | Large-tonnage pure electric wheel dumper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114537242B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101244687B (en) | Series-parallel type hybrid power-driven system and drive method | |
| CN101868366A (en) | Hybrid vehicle drive system and method and idle reduction system and method | |
| CN204895107U (en) | In good time 4 wheel driven hybrid vehicle system of electric formula inserts | |
| CN101624007A (en) | Plug-in hybrid electric vehicle | |
| CN103171566B (en) | Hybrid battery locomotive | |
| CN202686354U (en) | Integrated variable speed drive device and electric control energy and management system for hybrid power vehicle | |
| EP4088963B1 (en) | Tractor power supply system | |
| CN104943526A (en) | Plug-in right-time all-wheel-drive hybrid electric vehicle system | |
| CN111284328A (en) | Transmission method of rail engineering vehicle | |
| CN110154733A (en) | A kind of hybrid power engineering truck | |
| CN114537242B (en) | 100-ton-level pure-electric-driven mining dump truck | |
| CN115610212A (en) | Pure mining alternating current dump truck driving system with power battery capable of being configured in modular mode | |
| CN108297676A (en) | A kind of mixed power automobile driving system of with wheel motor | |
| CN103318046A (en) | All-electric light bus power assembly | |
| CN103121453A (en) | Furl cell engine | |
| CN110816309A (en) | Range-extending electric automobile and drive control method | |
| CN109693548A (en) | A kind of energy reutilization system carrying out Brake energy recovery | |
| CN105711606A (en) | 1000kW-power-grade pure electric alternating current driving shunting locomotive | |
| CN212401186U (en) | Transmission system of railway engineering vehicle | |
| CN205554191U (en) | 1000kW power grade electricelectric moves and exchanges transmission shunting loco | |
| CN109606395B (en) | Power transmission method for rail operation vehicle | |
| CN109577117B (en) | Transmission system of rail operation vehicle | |
| CN111267878A (en) | Rail engineering vehicle transmission system | |
| CN106740903B (en) | High-power low-speed storage battery tractor Mechatronic control system | |
| CN214607040U (en) | Electric transmission large-tonnage wide-body vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |