CN217672504U - Pure electric alternating-current transmission system - Google Patents
Pure electric alternating-current transmission system Download PDFInfo
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- CN217672504U CN217672504U CN202220883839.4U CN202220883839U CN217672504U CN 217672504 U CN217672504 U CN 217672504U CN 202220883839 U CN202220883839 U CN 202220883839U CN 217672504 U CN217672504 U CN 217672504U
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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 pure electric alternating-current transmission system comprises a vehicle control unit, wherein the vehicle control unit is respectively connected with a quick charging system, a power battery, a battery thermal management system, a high-voltage power distribution system, a low-voltage power supply system and a variable-frequency control system through a data communication bus and a sensor, monitors the states of the power battery, the battery thermal management system, the high-voltage power distribution system, the low-voltage power supply system and the variable-frequency control system, and sends control commands to the high-voltage power distribution system and the variable-frequency control system according to the states of the systems and operation instructions of drivers; the variable frequency control system controls and drives a left wheel traction motor, a right wheel traction motor, a hydraulic oil pump motor, a heat dissipation fan of an electric transmission system and a cabin air conditioning system to work; the telex system provides power for the cabin air conditioning system. Utilize the utility model discloses, can realize that electric drive mining dump truck realizes pure electrification operation, help reducing mine fuel consumption, reduce mine manufacturing cost, realize the green development in mine simultaneously.
Description
Technical Field
The utility model relates to a transmission system, concretely relates to electricelectric moves transmission system that exchanges.
Background
With the continuous and high-speed development of economy in China, the petroleum consumption is increased year by year, and multiple adjustments from sustainable development requirements such as energy safety, protection relief, climate change and the like are severe day by day, so that the promotion of green mine construction, the reduction of the influence of mining, loading and transportation on the environment are important subjects of the development of fourteen-five strip mines.
In the single-bucket-truck mining process of a large open-pit mine, a mining truck with a load of more than hundred tons and using diesel oil as power is the main force of mining transportation, consumes a large amount of fuel oil every year, generates a large amount of carbon dioxide and oxynitride, and seriously pollutes the environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome prior art not enough, provide a pure electric AC transmission system who is applicable to electric drive mining dump truck.
The technical scheme that its technical problem of solution adopted is, pure electric AC transmission system, including vehicle control unit, vehicle control unit connects quick charge system, power battery, battery thermal management system, high-pressure distribution system, low pressure power supply system, frequency conversion control system respectively through data communication bus and sensor, vehicle control unit monitors the state of power battery, battery thermal management system, high-pressure distribution system, low pressure power supply system, frequency conversion control system to high pressure distribution system, frequency conversion control system send control command according to each system state and navigating mate's operating instruction;
the high-voltage power distribution system controls the electric energy requirement provided by the power battery to the low-voltage power supply system, the variable-frequency control system and the battery thermal management system, the high-voltage power distribution system is connected with a circuit of the quick charging system and the power battery and is used for quickly charging the power battery, and the high-voltage power distribution system continuously distributes electric energy to the battery thermal management system and the low-voltage power supply system in the charging process, so that the low-voltage power supply system and the battery thermal management system of the whole vehicle continuously work in the charging process, and the normal charging of the vehicle is ensured;
the variable frequency control system drives and controls the left wheel traction motor, the right wheel traction motor, the hydraulic oil pump motor and the heat dissipation fan of the telex system to work;
the vehicle control unit can adjust the work of a hydraulic oil pump motor according to vehicle state data, sends an oil pump motor control instruction to the variable frequency control system, and controls the work of the hydraulic oil pump motor by the variable frequency control system so as to provide hydraulic power for functions of vehicle steering, hydraulic braking, car hopper lifting and the like;
the vehicle control unit can adjust the rotating speed of the cooling fan in real time according to the state information of the electric transmission system of the vehicle, a control instruction is sent to the variable frequency control system, and the variable frequency control system controls the operation of the cooling fan of the electric transmission system to cool the electric transmission system;
the frequency conversion control system provides power for the cabin air conditioning system, and the vehicle control unit intelligently controls the compressor or the heating PTC of the cabin air conditioning system to work according to the cabin temperature parameter set by the driver.
Further, the power battery thermal management system is controlled by the battery BMS, and the stability of the working temperature of the battery core of the power battery is guaranteed by starting a heat dissipation air conditioner or heating the PTC.
Furthermore, the high-voltage power distribution system is provided with a pre-charging function, other capacitive circuits are pre-charged before the power battery is connected, and the power battery is connected when the voltage of the power battery is pre-charged to be more than 90% of the voltage of the power battery, so that high-current impact during the connection of the power battery is avoided.
Further, the high-voltage distribution system is provided with a contactor adhesion monitoring function, and the adhesion detection of contactor contacts of the distribution system is carried out before the power battery is connected into the main circuit and when the power battery is powered off at high voltage of the whole vehicle, so that the failure of the pre-charging function due to the adhesion of the contactor contacts is avoided.
Furthermore, the variable frequency control system can also transmit electric energy generated when the vehicle is electrically braked to the power battery through the high-voltage distribution box, and the energy is recovered;
further, the power battery is one or more of a lithium titanate electric box, a lithium manganate electric box and a lithium iron phosphate electric box.
Further, the voltage range of the power battery is as follows: DC 675V to 1120V, the discharge power is more than 750kW, and the maximum charge power is more than 1200kW.
Furthermore, the power battery is composed of a plurality of electric boxes in a series or parallel connection mode.
Utilize the utility model discloses, can realize that electric drive mining dump truck realizes pure electrification operation, be particularly useful for the electric drive mining dump truck of strip mine load 100 tons and above, help reducing mine fuel consumption, reduce mine manufacturing cost, realize the green development in mine simultaneously.
Drawings
Fig. 1 is a block diagram of the embodiment of the present invention.
In the figure: the method comprises the following steps of 1-a vehicle control unit, 2-a quick charging system, 3-a power battery, 4-a battery thermal management system, 5-a high-voltage power distribution system, 6-a low-voltage power supply system, 7-a frequency conversion control system, 8-a left wheel traction motor, 9-a right wheel traction motor, 10-a hydraulic oil pump motor, 11-a heat dissipation fan of an electric transmission system and 12-a cabin air conditioning system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, the present embodiment includes a vehicle controller 1, where the vehicle controller 1 is connected to a fast charging system 2, a power battery 3, a battery thermal management system 4, a high-voltage power distribution system 5, a low-voltage power supply system 6, and a frequency conversion control system 7 through a data communication bus and various sensors, monitors states of the power battery 3, the battery thermal management system 4, the high-voltage power distribution system 5, the low-voltage power supply system 6, and the frequency conversion control system 7, and sends control commands to the high-voltage power distribution system 5, the frequency conversion control system 7, and other system components (not shown in the figure) of the vehicle according to states of the systems and operating instructions of a driver, so as to implement various functions of the vehicle.
The power battery 3 is an energy supply component of the whole vehicle and provides power for the whole vehicle; the power battery 3 is composed of a plurality of electric boxes in series or parallel connection, a battery pack forming the power battery 3 is selected according to the mine working conditions, and can be one or more of a lithium titanate electric box, a lithium manganate electric box and a lithium iron phosphate electric box. The voltage range of the power battery 3 is: DC 675V to 1120V, the discharge power is more than 750kW, and the maximum charge power is more than 1200kW.
The battery thermal management system 4 is controlled by the battery BMS, and the battery core works in a good temperature range by starting a heat dissipation air conditioner or heating the PTC, so that the service life of the battery can be prolonged.
The high-voltage power distribution system 5 distributes power for a finished automobile power supply, and distributes the electric energy provided by the power battery 3 to the low-voltage power supply system 6, the variable-frequency control system 7, the battery thermal management system 4 and other systems according to requirements. The high-voltage power distribution system 5 can connect the quick charging system to the circuit of the power battery 3 to quickly charge the power battery 3; in the charging process, the high-voltage power distribution system 5 continuously distributes electric energy to the battery thermal management system 4 and the low-voltage power supply system 6, so that the low-voltage power supply system 6 and the battery thermal management system 4 continuously work in the charging process, and normal charging of a vehicle is guaranteed; the high-voltage power distribution system 5 is provided with a pre-charging function, other capacitive circuits are pre-charged before the power battery 3 is connected, and the power battery 3 is connected when the voltage of the power battery is pre-charged to be more than 90% of the voltage of the battery, so that the high-current impact when the power battery 3 is connected is avoided; the high-voltage distribution system 5 is provided with a contactor adhesion monitoring function, and contactor contact adhesion detection of the distribution system is carried out before the power battery 3 is connected into the main circuit and when the whole vehicle is electrified under high voltage, so that the pre-charging function is prevented from being invalid due to contactor contact adhesion.
The variable frequency control system 7 drives and controls the left wheel traction motor 8, the right wheel traction motor 9, the hydraulic oil pump motor 10, the heat dissipation fan 11 of the telex system and the cabin air conditioning system 12 to work. The variable frequency control system 7 receives a control command from the vehicle control unit 1, and drives and controls the left wheel traction motor 8, the right wheel traction motor 9, the hydraulic oil pump motor 10 and the heat dissipation fan 11 of the electric transmission system to work. On the basis of realizing the basic functions of the vehicle, the consumption of electric energy of each system is reduced, and the vehicle endurance is prolonged.
The left wheel traction motor 8 and the right wheel traction motor 9 are driven by the variable frequency control system 7 to realize the forward and backward movement and the electric braking of the vehicle. The variable frequency control system 7 can also transmit electric energy generated when the vehicle is electrically braked to the power battery through the high-voltage distribution system 5 to recover the energy.
The vehicle control unit 1 can adjust the hydraulic oil pump motor 10 to work according to vehicle state data, sends a control command of the oil pump motor 10 to the variable frequency control system 7, and controls the hydraulic oil pump motor 10 to work through the variable frequency control system 7, so that hydraulic power is provided for functions of vehicle steering, hydraulic braking, car hopper lifting and the like.
The vehicle control unit 1 can adjust the rotating speed of the cooling fan 11 of the telex system in real time according to the state information of the telex system of the vehicle, and the implementation steps are that the frequency conversion control system 7 sends an instruction to the frequency conversion control system 7, and the frequency conversion control system 7 controls the cooling fan 11 of the telex system to work so as to cool the telex system.
The frequency conversion control system 7 provides power for the cabin air conditioning system, and the vehicle control unit 1 intelligently controls the compressor or the heating PTC of the cabin air conditioning system 12 to work according to the cabin temperature parameters set by the driver.
The electric drive mining dump truck capable of carrying 100 tons or more of strip mine realizes pure electrochemical operation, is beneficial to reducing the fuel consumption of the mine, reduces the production cost of the mine, and simultaneously realizes the green development of the mine.
Various modifications and variations of the present invention may be made by those skilled in the art, and they are still within the scope of the present invention, provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (8)
1. Pure electric AC drive system, including vehicle control unit, its characterized in that: the vehicle control unit is respectively connected with the rapid charging system, the power battery, the battery thermal management system, the high-voltage power distribution system, the low-voltage power supply system and the variable-frequency control system through a data communication bus and a sensor, monitors the states of the power battery, the battery thermal management system, the high-voltage power distribution system, the low-voltage power supply system and the variable-frequency control system, and sends control commands to the high-voltage power distribution system and the variable-frequency control system according to the states of the systems and operation instructions of a driver;
the high-voltage power distribution system controls the electric energy requirement provided by the power battery to the low-voltage power supply system, the variable-frequency control system and the battery thermal management system, the high-voltage power distribution system is connected with a circuit of the quick charging system and a circuit of the power battery and is used for quickly charging the power battery, and the high-voltage power distribution system continuously distributes electric energy to the battery thermal management system and the low-voltage power supply system in the charging process, so that the low-voltage power supply system and the battery thermal management system of the whole vehicle continuously work in the charging process, and the normal charging of the vehicle is guaranteed;
the variable frequency control system drives and controls the left wheel traction motor, the right wheel traction motor, the hydraulic oil pump motor, the heat dissipation fan of the telex system and the cabin air conditioning system to work;
the variable frequency control system provides power for the cabin air conditioning system, and the vehicle control unit intelligently controls the compressor or the heating PTC of the cabin air conditioning system to work according to the cabin temperature parameters set by the driver.
2. The electric-only ac drive system of claim 1, wherein: the power battery thermal management system is controlled by the battery BMS, and the stability of the working temperature of the battery core of the power battery is guaranteed by starting the heat dissipation air conditioner or heating the PTC.
3. A pure electric ac drive system according to claim 1, characterized in that: the high-voltage power distribution system is provided with a pre-charging function, other capacitive circuits are pre-charged before the power battery is connected, and the power battery is connected when the voltage of the power battery is pre-charged to be more than 90% of the voltage of the battery, so that high-current impact during the connection of the power battery is avoided.
4. A pure electric ac drive system according to claim 1, characterized in that: the high-voltage distribution system is provided with a contactor adhesion monitoring function, and the adhesion detection of contactor contacts of the distribution system is carried out before the power battery is connected into the main circuit and when the power battery is electrified under high voltage of the whole vehicle, so that the failure of the pre-charging function due to the adhesion of the contactor contacts is avoided.
5. The electric-only ac drive system of claim 1, wherein: the variable frequency control system can also transmit electric energy generated when the vehicle is electrically braked to the power battery through the high-voltage distribution box to recover the energy.
6. The electric-only ac drive system of claim 1, wherein: the power battery is one or more of a lithium titanate electric box, a lithium manganate electric box and a lithium iron phosphate electric box.
7. The electric-only ac drive system of claim 1, wherein: the voltage range of the power battery is as follows: DC 675V to 1120V, the discharge power is more than 750kW, and the maximum charge power is more than 1200kW.
8. The electric-only ac drive system of claim 1, wherein: the power battery is composed of a plurality of electric boxes in a series or parallel connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883839.4U CN217672504U (en) | 2022-04-15 | 2022-04-15 | Pure electric alternating-current transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883839.4U CN217672504U (en) | 2022-04-15 | 2022-04-15 | Pure electric alternating-current transmission system |
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| Publication Number | Publication Date |
|---|---|
| CN217672504U true CN217672504U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220883839.4U Active CN217672504U (en) | 2022-04-15 | 2022-04-15 | Pure electric alternating-current transmission system |
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| CN (1) | CN217672504U (en) |
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2022
- 2022-04-15 CN CN202220883839.4U patent/CN217672504U/en active Active
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