LNG天然气燃料串联混动系统及新能源混动非公路自卸车
By combining an LNG natural gas fuel range extender system with a lithium-ion power battery in a series hybrid system, the problems of range and pollutant emissions of new energy mining dump trucks under complex working conditions have been solved, achieving efficient and environmentally friendly energy utilization and system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI TONLY HEAVY IND
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing new energy mining dump trucks have insufficient range under heavy loads on uphill slopes or complex road conditions in open-pit mines, inadequate battery thermal management, low transmission system efficiency, large infrastructure investment, and high pollutant emissions from traditional diesel power.
The series hybrid system combines an LNG natural gas fuel range extender system with a lithium-ion power battery. The vehicle controller coordinates the operation of each component to achieve flexible energy distribution and intelligent control. It is equipped with a battery thermal management system to ensure that the battery operates efficiently within different temperature ranges.
It significantly reduces pollutant emissions, improves energy efficiency, lowers operating costs, enhances system stability and reliability, adapts to complex operating conditions, and avoids the limitations of pure electric range and infrastructure dependence.
Smart Images
Figure CN224510861U_ABST
Abstract
Claims
1. LNG natural gas fuel series hybrid system, characterized in that, include: An LNG natural gas fuel range extender system includes an LNG cylinder, a natural gas engine, a generator, and a generator controller. The LNG cylinder is connected to the fuel supply end of the natural gas engine via a fuel pipeline. The power output end of the natural gas engine is driven to the power input end of the generator. The three-phase AC output end of the generator is connected to the AC input end of the generator controller via a high-voltage wiring harness. The generator controller is used to convert mechanical energy into electrical energy and output direct current. An electric drive unit assembly includes a drive motor and an AMT (Automated Manual Transmission) gearbox. The power output end of the drive motor is connected to the power input end of the AMT gearbox via a coupling. The power output end of the AMT gearbox is used to connect to the vehicle's transmission system. A lithium-ion power battery and a high-voltage system are disclosed. The high-voltage system includes a high-voltage box and a drive motor controller. The positive and negative terminals of the lithium-ion power battery are connected to the DC input terminal of the high-voltage box via a high-voltage wiring harness for storing or outputting electrical energy. The DC output terminal of the generator controller is connected to the first DC input terminal of the drive motor controller via a high-voltage wiring harness. The DC output terminal of the high-voltage box is connected to the second DC input terminal of the drive motor controller and the voltage conversion module of the vehicle's low-voltage electrical components via a high-voltage wiring harness to distribute electrical energy. The three-phase AC output terminal of the drive motor controller is connected to the three-phase AC input terminal of the drive motor via a high-voltage wiring harness for converting DC power into three-phase AC power to drive the drive motor. The vehicle controller is connected to the signal terminals of the generator controller, the drive motor controller, and the high-voltage box via a CAN bus.
2. The LNG natural gas fuel series hybrid system of claim 1, wherein, It also includes a battery thermal management system, which is connected to the lithium-ion power battery through a coolant circulation pipeline for temperature regulation of the lithium-ion power battery. The DC output terminal of the high-voltage box is also connected to the power supply terminal of the battery thermal management system through a high-voltage wiring harness.
3. The LNG natural gas fuel series hybrid system of claim 2, wherein, The battery thermal management system includes a cooling water pump, a radiator, and a temperature sensor. The cooling water pump, the lithium-ion power battery, and the radiator form a closed-loop coolant circulation circuit through a coolant circulation pipeline. The temperature sensor is located at the coolant outlet of the lithium-ion power battery, and the vehicle controller is also connected to the signal terminal of the temperature sensor via a CAN bus.
4. The LNG natural gas fuel series hybrid system of claim 3, wherein, The high-voltage box includes a DC distribution module. The input terminal of the DC distribution module is connected to the positive and negative terminals of the lithium-ion power battery and the DC output terminal of the generator controller via high-voltage wiring harnesses. The output terminal of the DC distribution module is connected to the DC input terminal of the drive motor controller, the power supply terminal of the battery thermal management system, and the voltage conversion module of the vehicle's low-voltage electrical components via high-voltage wiring harnesses.
5. The LNG natural gas fuel series hybrid system of claim 1, wherein, The high-voltage system also includes a high-voltage fuse, which is connected in series in the high-voltage wiring harness between the positive terminal of the lithium-ion power battery and the DC input terminal of the high-voltage box.
6. The LNG natural gas fuel series hybrid system of claim 1, wherein, The natural gas engine has a rated power of 450 to 500 horsepower, and the generator has a rated output power of 330 kW to 370 kW.
7. The LNG natural gas fuel series hybrid system of claim 1, wherein, The rated power of the drive motor is 600 kW to 640 kW, and the AMT mechanical gearbox is a multi-gear transmission mechanism.
8. The LNG natural gas fuel series hybrid system according to claim 1, characterized in that, The rated capacity of the lithium-ion power battery is 170 kWh to 180 kWh.
9. A new energy hybrid off-highway dump truck, characterized in that, Including the LNG natural gas fuel series hybrid system as described in any one of claims 1-8.