New energy pure electric mining card

Abstract

A new energy pure electric mining truck relates to the technical field of mining mechanical equipment and comprises a frame, a rear axle assembly, a cab, a container, a power battery pack, a battery high-voltage box, a battery heat dissipation assembly, an all-in-one controller, a motor power assembly, a motor electric control heat dissipation assembly, a whole vehicle controller and a CAN bus. The power battery pack supplies high-voltage electricity, the battery high-voltage box is responsible for power distribution and external charging, and the heat dissipation assembly dissipates heat for the battery high-voltage box. The all-in-one controller is used for charging the low-voltage storage battery and is controlled to transmit three-phase power to the motor assembly, the air pump and the oil pump. The motor assembly comprises a main drive motor and a gearbox and is connected with a rear axle through a transmission shaft for force transmission. The electric control heat dissipation assembly is powered by low-voltage power and conducts heat dissipation on the high-voltage box, the controller and the motor assembly, and the whole vehicle controller achieves monitoring, diagnosis and parameter regulation and control through a CAN bus. Based on a traditional vehicle frame optimized arrangement scheme, through reasonable space reuse, key component integration and heat load partition management, high efficiency and reliability of traditional mine truck electric transformation can be achieved.

Description

Technical Field

[0001] This invention relates to the field of mining machinery and equipment technology, specifically a new energy pure electric mining truck. Background Technology

[0002] Mining trucks, as core transportation equipment in mining areas, suffer from three major problems with traditional diesel power systems: high energy consumption, high pollution, and high noise. Fuel costs account for more than 30% of operating costs, exhaust emissions contain pollutants such as NOx and PM, and engine vibration and noise seriously affect the driving and riding environment.

[0003] Most existing pure electric mining trucks are entirely new designs, with long development cycles and high costs. Meanwhile, the modification schemes based on traditional diesel mining trucks often face problems such as low space utilization, thermal management conflicts, and unreasonable center of gravity distribution due to the lack of systematic optimization of component layout, resulting in insufficient power performance and safety redundancy. Summary of the Invention

[0004] The purpose of this invention is to provide a new energy pure electric mining truck, which, based on an optimized layout of the traditional chassis, achieves high efficiency and reliability in the electrification transformation of traditional mining trucks by rationally reusing space, integrating key components, and managing heat load in zones.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A new energy pure electric mining truck includes a frame, a rear axle assembly, a cab, a cargo box, a power battery pack, a battery high-voltage box, a battery heat dissipation assembly, an all-in-one controller, a motor powertrain, a motor electronic control heat dissipation assembly, a vehicle controller, and a CAN bus.

[0007] The power battery pack is used to provide high-voltage power to the vehicle; the battery high-voltage box has a built-in battery management system, which is used to deliver the power of the power battery pack to the multi-function controller and battery cooling components, and can also be connected to an external power source to charge the power battery pack; the battery cooling components are used to dissipate heat and cool the power battery pack.

[0008] The all-in-one controller includes a DC-DC voltage converter for charging the low-voltage battery and a main drive motor controller, an air pump controller, and a steering pump controller for outputting three-phase high-voltage AC power to the motor powertrain, air pump, and steering pump. The main drive motor controller, air pump controller, and steering pump controller are all controlled by the vehicle controller to implement command control of the motor powertrain, air pump, and steering pump.

[0009] The electric motor powertrain includes a main drive motor and a gearbox. The electric motor powertrain is connected to the rear axle assembly via a driveshaft and is used to transmit power to the rear wheels.

[0010] The motor and electronic control heat dissipation component is powered by a low-voltage battery and is used to dissipate heat and cool the battery high-voltage box, multi-function controller, and motor powertrain.

[0011] The vehicle controller communicates with the battery high-voltage box, battery cooling components, multi-function controller, motor powertrain, motor electronic control cooling components, electronic throttle, and electronic gear shift via CAN bus to achieve vehicle status monitoring, fault diagnosis, and power parameter control.

[0012] Furthermore, the chassis is a reused traditional diesel mining truck chassis, and the mounting interfaces of the rear axle assembly and cargo box are consistent with those of traditional diesel mining trucks, without the need to modify the traditional chassis structure.

[0013] Furthermore, the power battery pack includes multiple battery packs, which are symmetrically distributed on both sides of the vehicle frame to improve the anti-rollover capability of mining trucks when climbing hills under heavy load.

[0014] Furthermore, the battery cooling assembly is located between the battery packs on both sides of the vehicle frame, and independently provides cooling circulation for the power battery pack. The battery cooling assembly includes a first water pump, a compressor, a first radiator, and a first fan. The battery cooling assembly is connected in series with the cooling circuit of the battery packs on both sides of the vehicle frame, and is driven by high-voltage electricity provided by the battery high-voltage box.

[0015] Furthermore, the motor and electronic control cooling assembly includes a second radiator, a second fan, and a second water pump. Both the second radiator and the second fan are located in front of the cab. The motor and electronic control cooling assembly is connected to the battery high-voltage box, the multi-function controller, and the cooling circuit of the motor powertrain, and is driven by a low-voltage battery.

[0016] Furthermore, the battery cooling assembly and the motor control cooling assembly each include a first expansion tank and a second expansion tank, which are used to replenish coolant to the battery cooling assembly and the motor control cooling assembly respectively and to vent air from the pipeline.

[0017] Furthermore, the CAN bus includes the vehicle CAN bus and the powertrain CAN bus. The vehicle CAN bus connects the battery high-voltage box, battery cooling components, multi-function controller and vehicle controller to realize vehicle status monitoring and fault diagnosis. The powertrain CAN bus connects the multi-function controller, motor powertrain and vehicle controller to realize torque and speed control.

[0018] Furthermore, the battery management system can monitor the voltage, temperature, remaining charge, and insulation status of the power battery pack in real time, and cut off the high-voltage circuit when overvoltage, overtemperature, short circuit, or insulation degradation is detected.

[0019] Furthermore, the electric motor powertrain is equipped with a power take-off port, which is used to output power to the original vehicle lifting system to realize the lifting and lowering of the cargo box.

[0020] Furthermore, the mining truck is also equipped with a fuse box, which contains a fuse module and a relay module. The low-voltage power supply for all electronic devices in the vehicle must pass through the fuse module to protect the electrical equipment in case of emergencies. The vehicle's key start and light signal switching are achieved through the relay module.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects: 1. High efficiency and cost reduction: This invention reuses more than 75% of the original vehicle's structural components, reducing the modification cost by more than 50% compared to a completely new design, and can adapt to the rapid electrification transformation of existing mining trucks. 2. Safe and reliable. In this invention, the relatively independently operating battery heat dissipation components and motor control heat dissipation components are used to avoid overheating of components. The distributed battery arrangement improves the anti-rollover capability. The dual CAN bus + fuse box redundancy design ensures electrical safety. 3. Performance optimization: This invention reduces energy loss through integrated design, greatly improves transmission efficiency, and enhances the full-load climbing ability and anti-rollover ability of mining trucks through center of gravity balance optimization. The driving range under the same working conditions is significantly greater than that of the original diesel mining trucks. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0023] Figure 2 This is a top view schematic diagram of the chassis structure of the present invention.

[0024] Attached Figure Descriptions: 11. Chassis; 12. Rear Axle Assembly; 121. Rear Wheel; 13. Cab; 14. Cargo Box; 15. Low-Voltage Battery; 16. Air Pump; 161. Air Tank; 17. Steering Pump; 2. Power Battery Pack; 21. Battery Pack; 3. Battery High-Voltage Box; 4. Battery Cooling Assembly; 41. First Expansion Tank; 5. Multi-function Controller; 6. Motor Powertrain; 61. Power Take-off Port; 7. Motor Control Cooling Assembly; 71. Second Radiator; 72. Second Fan; 73. Second Water Pump; 74. Second Expansion Tank; 8. Vehicle Controller; 9. Fuse Box. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the present invention clearer, the features and performance of a new energy pure electric mining truck of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Please see the appendix Figures 1-2 A new energy pure electric mining truck includes a frame 11, a rear axle assembly 12, a cab 13, a cargo box 14, a power battery pack 2, a battery high-voltage box 3, a battery heat dissipation component 4, an all-in-one controller 5, a motor powertrain 6, a motor electronic control heat dissipation component 7, a vehicle controller 8, and a CAN bus.

[0027] The frame 11 is a reused traditional diesel mining truck frame. The mounting interfaces of the rear axle assembly 12 and the cargo box 14 are consistent with those of traditional diesel mining trucks, so there is no need to modify the traditional frame structure.

[0028] The power battery pack 2 is used to provide high-voltage power to the entire vehicle. The power battery pack 2 includes multiple battery packs 21, which are symmetrically distributed on both sides of the frame 11 to improve the anti-rollover capability of the mining truck during heavy-load climbing. Specifically, the number of battery packs 21 in the power battery pack 2 can be flexibly selected according to the specifications of the mining truck chassis and the range requirements. Preferably, in this embodiment, the power battery pack 2 includes eight battery packs 21, with four on each side of the frame 11.

[0029] The high-voltage battery box 3 has a built-in battery management system, which is used to deliver power from the power battery pack 2 to the all-in-one controller 5 and the battery heat dissipation component 4, and can also be connected to an external power source to charge the power battery pack 2. The battery management system can monitor the voltage, temperature, remaining charge and insulation status of the power battery pack 2 in real time, and cut off the high-voltage circuit when overvoltage, overtemperature, short circuit or insulation degradation is detected.

[0030] The battery cooling component 4 is used to cool down the power battery pack 2. The battery cooling component 4 is located between the battery packs 21 on both sides of the frame 11 and independently provides cooling circulation for the power battery pack 2. The battery cooling component 4 includes a first water pump, a compressor, a first radiator and a first fan. The battery cooling component 4 is connected in series with the cooling circuit of the battery packs 21 on both sides of the frame 11 and is driven by high voltage electricity provided by the battery high voltage box 3.

[0031] The all-in-one controller 5 includes a DC-DC voltage converter for charging the low-voltage battery 15 and a main drive motor controller, an air pump controller, and a steering pump controller for outputting three-phase high-voltage AC power to the motor powertrain 6, air pump 16, and steering pump 17. The main drive motor controller, air pump controller, and steering pump controller are all controlled by the vehicle controller 8 to implement command control of the motor powertrain 6, air pump 16, and steering pump 17.

[0032] The electric motor powertrain 6 includes a main drive motor and a gearbox. The electric motor powertrain 6 is connected to the rear axle assembly 12 via a drive shaft to transmit power to the rear wheels 121. The electric motor powertrain 6 is also provided with a power take-off port 61 to output power to the original vehicle lifting system to achieve the lifting and lowering of the cargo box 14.

[0033] The motor and electronic control cooling assembly 7 is powered by the low-voltage battery 15 and is used to cool the battery high-voltage box 3, the multi-function controller 5, and the motor powertrain 6. The motor and electronic control cooling assembly 7 includes a second radiator 71, a second fan 72, and a second water pump 73. The second radiator 71 and the second fan 72 are both located in front of the cab 13. The motor and electronic control cooling assembly 7 is connected to the cooling circuit of the battery high-voltage box 3, the multi-function controller 5, and the motor powertrain 6, and is driven by the low-voltage battery 15.

[0034] The battery cooling assembly 4 and the motor control cooling assembly 7 also include a first expansion tank 41 and a second expansion tank 74, which are used to replenish coolant to the battery cooling assembly 4 and the motor control cooling assembly 7 and to vent air from the pipeline.

[0035] The vehicle controller 8 communicates with the battery high-voltage box 3, battery cooling assembly 4, multi-function controller 5, motor powertrain 6, motor and electronic control cooling assembly 7, electronic throttle, and electronic gear shifter via a CAN bus to achieve vehicle status monitoring, fault diagnosis, and power parameter control. The CAN bus includes a vehicle CAN bus and a powertrain CAN bus. The vehicle CAN bus connects the battery high-voltage box 3, battery cooling assembly 4, multi-function controller 5, and vehicle controller 8 for vehicle status monitoring and fault diagnosis. The powertrain CAN bus connects the multi-function controller 5, motor powertrain 6, and vehicle controller 8 for torque and speed control.

[0036] The mining truck is also equipped with a fuse box 9, which contains a fuse module and a relay module. The low-voltage power supply for all electronic devices in the vehicle must pass through the fuse module to protect the electrical equipment in case of emergencies. The key start and light signal switching of the entire vehicle are achieved through the relay module.

[0037] In specific implementation, this embodiment is based on the traditional diesel mining truck frame, removing the original engine, fuel tank, exhaust system and other components, and reconstructing the layout according to the principle of "integrating the core electronic control in the front compartment, reusing the transmission space in the middle, and distributing the batteries on both sides". The pure electric mining truck includes a frame 11, on which a rear axle assembly 12, a cab 13 and a cargo box 14 are installed. The cab 13 contains an electronic gear shifter, an electronic throttle and an LCD instrument panel.

[0038] The inner side of the frame 11, from front to back, is equipped with a second radiator 71, a second fan 72, a high-voltage battery box 3 integrating a battery management system (BMS), a multi-function controller 5, an air pump 16, a power steering pump 17, a vehicle control unit (VCU) 8, a fuse box 9, and an electric motor powertrain 6. Battery packs 21 are symmetrically mounted on both sides of the frame 11, with two sets of low-voltage batteries 15 located near the power battery pack 2.

[0039] A battery cooling assembly 4 is installed on the inner side of the frame 11 above the drive shaft. A first expansion tank 41 and a second expansion tank 74 are installed behind the cab 13 to replenish coolant to the battery cooling assembly 4 and the motor control cooling assembly 7, respectively.

[0040] The second radiator 71 and second fan 72 at the front of the vehicle are integrated into a single assembly. Coolant is circulated via the second water pump 73 at the rear, passing through the multi-function controller 5, the battery high-voltage box 3, and the motor powertrain 6 before reaching the second radiator 71 and second fan 72. This completes the cooling of the controller and motor systems. Coolant is replenished through the second expansion tank 74 above, and the cooling pipes are vented. The second cooling assembly (second radiator 71 and second fan 72) and the second water pump 73 form a closed loop, with the path being "second water pump 73 → multi-function controller 5 → battery high-voltage box 3 → motor powertrain 6 → second cooling assembly → second expansion tank 74". The second expansion tank 74 facilitates both coolant replenishment and venting, reducing space usage by 30% compared to traditional separate radiators.

[0041] The cooling of the power battery pack 2 is accomplished by the battery cooling assembly 4 located in the middle of the rear of the frame 11. The battery cooling assembly 4 integrates a first water pump, a compressor, a first radiator, and a first fan. The battery cooling assembly 4 only cools the power battery pack 2, connecting the cooling circuits of the power battery pack 2 on both sides of the frame 11 in series, and adding and replenishing coolant and purging air from the pipeline through the first expansion tank 41. The independent battery cooling assembly 4 (integrating the first water pump, compressor, first radiator, and first fan) is connected in series with the power battery packs 2 on both sides, and the dedicated first expansion tank 41 replenishes the coolant, which can avoid the heat from the controller and motor system interfering with the battery temperature control (the optimal operating temperature of the battery is 25-35℃, and the motor and electronic control can withstand 60-80℃).

[0042] The power battery pack 2 provides high-voltage electricity to the vehicle. The high-voltage battery box 3 receives high-voltage electricity from the power battery pack 2 and outputs high-voltage electricity to the multi-function controller 5 and the battery cooling component 4. It can also charge the power battery pack 2 through a DC charging socket.

[0043] The all-in-one controller 5 integrates a DC-DC voltage converter, an air pump controller, a steering pump controller, and a main drive motor controller. The DC-DC voltage converter converts high-voltage electricity to 24V low-voltage electricity to charge the low-voltage battery 15; the air pump controller inputs three-phase high-voltage AC power to the air pump 16; the steering pump controller outputs three-phase high-voltage AC power to the steering pump 17, controlling its operation and start / stop; and the main drive motor controller outputs three-phase high-voltage AC power to the motor power unit 6, and controls parameters such as the speed and torque of the main drive motor through the wiring harness of the all-in-one controller 5. This embodiment, by integrating the DC-DC voltage converter (achieving high-voltage to 24V low-voltage conversion, replacing the original generator), air pump controller, steering pump controller, and main drive motor controller, reduces wiring harness length by over 40%, significantly reducing electromagnetic interference risks and mass production costs.

[0044] The main drive motor and gearbox are integrated into a motor powertrain 6. The motor powertrain 6 is connected to the original vehicle's rear axle assembly 12 via a drive shaft. The original transmission system interface is retained, and there is no need to modify the structure of the frame 11. The rear axle assembly 12 transmits power from the motor powertrain 6 to the rear wheels 121, thereby driving the entire vehicle.

[0045] The vehicle controller 8 is connected to the battery high-voltage box 3, battery heat dissipation assembly 4, multi-function controller 5, motor powertrain 6, second water pump 73, second fan 72, electronic gear shifter, electronic throttle, LCD instrument panel, etc. via wiring harness. All components communicate with each other via CAN bus.

[0046] Fuse box 9 consists of a fuse module and a relay module. All low-voltage power supplies for the vehicle's electronic devices must pass through the fuse module to protect the electrical equipment in case of emergencies. The vehicle's key start and some lighting signals are controlled via the relay module.

[0047] The power battery pack 2 consists of eight battery packs 21, with four on each side of the frame 11, providing high-voltage electricity to the entire vehicle. Based on the Zero Moment Point (ZMP) theory, the resultant torque of the total battery mass (approximately 30% of the total vehicle weight) passes through the longitudinal center plane of the frame 11, reducing lateral center of gravity offset (by 45% compared to a centralized arrangement) and improving anti-rollover capability during heavy-load climbing. The battery packs 21 are installed in the original diesel tank and spare tire compartment locations without additionally encroaching on cargo space, and the cargo box 14 volume remains consistent with the original vehicle.

[0048] The battery cooling component 4 is installed between the battery packs 21 on both sides of the frame 11 to provide cooling circulation for the power battery pack 2.

[0049] Air pump 16, power steering pump 17, battery high voltage box 3, multi-function controller 5, second cooling assembly, second water pump 73, vehicle controller 8, and fuse box 9 are all located under the front of the vehicle. This structural design can make the most of the original vehicle's space, that is, the space remaining after removing the original vehicle's power system, cooling system, and other fuel systems.

[0050] The air pump 16 is supplied with three-phase high-voltage electricity by the multi-function controller 5, and its start-stop and operation are controlled by the vehicle controller 8. The vehicle controller 8 controls the start-stop of the air pump 16 by checking the pressure of the air pressure sensor of the air tank 161, so as to provide sufficient air for the braking system.

[0051] The second water pump 73 is powered by a 24V low-voltage battery 15 and its speed is controlled by a PWM signal sent by the vehicle controller 8, thereby adjusting the coolant flow and achieving temperature control of the motor and electronic control system.

[0052] The steering pump 17 is supplied with three-phase high-voltage electricity by the multi-function controller 5, which provides auxiliary power to the steering gear.

[0053] The original vehicle's lifting system only replaces the power source. Power is provided by the power take-off port 61 of the electric motor power assembly 6, which is connected to the original vehicle's lifting cylinder. The lifting and lowering of the cargo box 14 is controlled by the original vehicle's lifting control lever.

[0054] The CAN bus is divided into two paths: a 250kbps vehicle CAN bus and a 500kbps powertrain CAN bus. The vehicle CAN bus connects the battery high-voltage box 3, battery cooling assembly 4, multi-function controller 5, and vehicle controller 8, and is responsible for vehicle status monitoring and fault diagnosis. The powertrain CAN bus connects the multi-function controller 5, motor powertrain 6, and vehicle controller 8, and is responsible for real-time torque and speed control. This embodiment, through a dual-bus redundancy design, greatly improves communication reliability.

[0055] When in use, the key signal triggers the vehicle controller 8 to perform a self-test. After the vehicle controller 8 confirms through the vehicle CAN bus that the battery SOC is greater than 20% and that there are no faults in each controller, the battery high-voltage box 3 outputs high-voltage electricity to the multi-in-one controller 5, and the DC voltage converter starts to charge the low-voltage battery 15.

[0056] When the electronic throttle pedal is pressed, the signal is analyzed by the vehicle controller 8 and sent to the multi-in-one controller 5 via the power CAN bus. The main drive motor controller adjusts the motor speed / torque and drives the rear axle assembly 12 through the gearbox and drive shaft.

[0057] The vehicle controller 8 adjusts the speed of the second water pump 73 (motor electronic control heat dissipation component 7) or the power of the compressor (battery heat dissipation component 4) through PWM signals based on the temperature signals of the motor or battery to maintain the target temperature.

[0058] It should be noted that the parts not described in detail in this solution are all prior art. The above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A new energy pure electric mining truck, comprising a frame (11), a rear axle assembly (12), a cab (13), and a cargo box (14), characterized in that: It also includes the power battery pack (2), battery high-voltage box (3), battery heat dissipation assembly (4), all-in-one controller (5), motor powertrain (6), motor electronic control heat dissipation assembly (7), vehicle controller (8), and CAN bus. The power battery pack (2) is used to provide high-voltage power to the vehicle. The battery high-voltage box (3) has a built-in battery management system, which is used to transmit the power of the power battery pack (2) to the multi-in-one controller (5) and the battery heat dissipation component (4), and can be connected to an external power source to charge the power battery pack (2). The battery heat dissipation component (4) is used to dissipate heat and cool the power battery pack (2). The multi-function controller (5) includes a DC-DC voltage converter for charging the low-voltage battery (15) and a main drive motor controller, an air pump controller, and a steering pump controller for outputting three-phase high-voltage AC power to the motor powertrain (6), air pump (16), and steering pump (17). The main drive motor controller, air pump controller, and steering pump controller are all controlled by the vehicle controller (8) to implement command control of the motor powertrain (6), air pump (16), and steering pump (17). The electric motor powertrain (6) includes a main drive motor and a gearbox. The electric motor powertrain (6) is connected to the rear axle assembly (12) via a drive shaft to transmit power to the rear wheels (121). The motor control heat dissipation assembly (7) is powered by a low-voltage battery (15) and is used to dissipate heat and cool the battery high-voltage box (3), the multi-function controller (5), and the motor powertrain (6). The vehicle controller (8) communicates with the battery high-voltage box (3), battery heat dissipation assembly (4), multi-in-one controller (5), motor powertrain (6), motor electronic control heat dissipation assembly (7), electronic throttle, and electronic gear position via CAN bus to realize vehicle status monitoring, fault diagnosis and power parameter control.

2. The new energy pure electric mining truck as described in claim 1, characterized in that: The frame (11) is a reused traditional diesel mining truck frame. The mounting interfaces of the rear axle assembly (12) and cargo box (14) are consistent with those of traditional diesel mining trucks, and there is no need to modify the traditional frame structure.

3. The new energy pure electric mining truck as described in claim 1, characterized in that: The power battery pack (2) includes multiple battery packs (21), which are symmetrically distributed on both sides of the frame (11) to improve the anti-rollover capability of the mining truck when climbing hills under heavy load.

4. A new energy pure electric mining truck as described in claim 1, characterized in that: The battery cooling component (4) is located between the battery packs (21) on both sides of the frame (11) and independently provides cooling circulation for the power battery pack (2). The battery cooling component (4) includes a first water pump, a compressor, a first radiator and a first fan. The battery cooling component (4) is connected in series with the cooling circuit of the battery packs (21) on both sides of the frame (11) and is driven by high voltage electricity provided by the battery high voltage box (3).

5. A new energy pure electric mining truck as described in claim 1, characterized in that: The motor control heat dissipation assembly (7) includes a second radiator (71), a second fan (72), and a second water pump (73). The second radiator (71) and the second fan (72) are both located in front of the cab (13). The motor control heat dissipation assembly (7) is connected to the cooling circuit of the battery high-voltage box (3), the multi-in-one controller (5), and the motor power assembly (6), and is driven by the low-voltage battery (15).

6. A new energy pure electric mining truck as described in claim 1, characterized in that: The battery heat dissipation assembly (4) and the motor control heat dissipation assembly (7) include a first expansion tank (41) and a second expansion tank (74), respectively, for replenishing coolant to the battery heat dissipation assembly (4) and the motor control heat dissipation assembly (7) and venting air from the pipeline.

7. A new energy pure electric mining truck as described in claim 1, characterized in that: The CAN bus includes the vehicle CAN bus and the power CAN bus. The vehicle CAN bus connects the battery high-voltage box (3), the battery heat dissipation assembly (4), the multi-in-one controller (5) and the vehicle controller (8) to realize vehicle status monitoring and fault diagnosis. The power CAN bus connects the multi-in-one controller (5), the motor powertrain (6) and the vehicle controller (8) to realize torque and speed control.

8. A new energy pure electric mining truck as described in claim 1, characterized in that: The battery management system can monitor the voltage, temperature, remaining charge and insulation status of the power battery pack (2) in real time, and cut off the high voltage circuit when overvoltage, overtemperature, short circuit or insulation degradation is detected.

9. A new energy pure electric mining truck as described in claim 1, characterized in that: The electric motor powertrain (6) is equipped with a power take-off port (61) for outputting power to the original vehicle lifting system to realize the lifting and lowering of the cargo box (14).

10. A new energy pure electric mining truck as described in claim 1, characterized in that: The mining truck is also equipped with a fuse box (9), which contains a fuse module and a relay module. The low-voltage power supply of all electronic equipment in the vehicle must pass through the fuse module to protect the electrical equipment in case of an emergency. The key start and light signal switching of the vehicle are achieved through the relay module.

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