Four-wheel independent cooling type unmanned mine truck cooling system and cooling method

Abstract

The invention discloses a four-wheel independent cooling type unmanned mine truck cooling system which comprises four independent cooling loops, and each cooling loop comprises a radiator, a first water pump, a heat dissipation module of a controller, a second water pump and a heat dissipation device of a driving motor. The radiator, the first water pump, the radiating module, the second water pump and the radiating device are sequentially connected through a cooling pipeline to form a closed loop, the first water pump and the second water pump are connected to two sides of the radiating module respectively, and the driving motor is located at the rear end of the second water pump. The invention further discloses a cooling method of the four-wheel independent cooling type unmanned mine truck. According to the invention, the problems of non-uniform heat dissipation distribution, poor cooling efficiency and incapability of independent control of a common cooling mode of a plurality of wheel edge driving motors and a controller are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cooling of new energy unmanned mine vehicles, and particularly relates to a four-wheel independent cooling type unmanned mine vehicle cooling system and a cooling method. BACKGROUND

[0002] The new energy unmanned mine vehicle uses a power battery as a power source to provide energy for a driving motor, thereby driving the mine vehicle to run. For the cooling system, the cooling of the engine is reduced, but the cooling of the driving motor is required.

[0003] The commonly used cooling method is air cooling, and two driving rear wheels are cooled at the same time. This cooling method cannot realize the independent cooling of each wheel edge driving motor. When the vehicle is turning or encountering a muddy road and slipping, the working states of the left and right driving wheels are different, and therefore the heat generation amounts of the wheel edge driving motors of the left and right driving wheels are different, and the required cooling intensities are different. The cooling system cannot reasonably control the temperatures of the wheel edge driving motors of the left and right driving wheels, and only cools the wheel edge driving motors of the left and right driving wheels without difference, which is prone to the problems that the wheel edge driving motor with a large heat generation amount has insufficient heat dissipation, and the wheel edge driving motor with a small heat generation amount has insufficient heat dissipation. The common cooling method of the above multiple wheel edge driving motors and controllers increases the workload of the cooling system, affects the service life of the vehicle, and reduces the production efficiency. SUMMARY

[0004] The application aims to provide a four-wheel independent cooling type unmanned mine vehicle cooling system and a cooling method, which overcome the problems of uneven heat dissipation distribution, poor cooling efficiency and inability to control individually in the common cooling method of multiple wheel edge driving motors and controllers.

[0005] To achieve the above-mentioned purpose, the technical solution used by the application is as follows:

[0006] The four-wheel independent cooling type unmanned mine vehicle cooling system comprises four independent cooling circuits, and each cooling circuit comprises a radiator, a first water pump, a heat dissipation module of a controller, a second water pump and a heat dissipation device of a driving motor. The radiator, the first water pump, the heat dissipation module, the second water pump and the heat dissipation device are connected in sequence through cooling pipelines and form a closed loop. The first water pump and the second water pump are respectively connected to the two sides of the heat dissipation module, and the driving motor is located at the rear end of the second water pump.

[0007] Further, the radiator, the first water pump, the heat dissipation module, the second water pump and the heat dissipation device are connected in series in the cooling circuit and form a closed loop.

[0008] Further, the four independent cooling circuits are respectively used for cooling the driving motors and controllers of the left front wheel, the left rear wheel, the right front wheel and the right rear wheel of the whole vehicle.

[0009] The four-wheel independent cooling type unmanned mine vehicle cooling method comprises the following steps:

[0010] During the driving process of the unmanned mine vehicle, when the vehicle turns or the wheels slip, the output powers of the four-wheel driving motors are different, resulting in different heat generation amounts of the driving motors and controllers corresponding to the four wheels, and the controllers corresponding to the four wheels control the output powers of the first water pump and the second water pump to match the heat generation amounts according to the heat generation amounts of the circuits.

[0011] The first water pump delivers the cooling liquid cooled in the radiator to the heat dissipation module of the controller, the second water pump delivers the cooling liquid heated in the heat dissipation module to the heat dissipation device of the driving motor, and the twice-heated cooling liquid enters the radiator for cooling.

[0012] Preferably, the controllers control the output powers of the first water pump and the second water pump to match the heat generation amounts of the controllers and the driving motors, respectively, and the sum of the heat generation amounts of the controllers and the driving motors is the heat generation amount of the circuit.

[0013] The technical effects of the present application include:

[0014] The present application overcomes the problems of uneven heat dissipation distribution, poor cooling efficiency and inability to control individually in the common cooling mode of multiple wheel-side driving motors and controllers, and has the characteristics of good cooling performance, independent control, balanced heat dissipation, high reliability and low energy consumption.

[0015] 1. Independent cooling structure;

[0016] The four wheel-side driving motors are independently cooled, and the independent controllers control and cool, without affecting each other, and different cooling outputs are configured according to different heat generation amounts, the workloads of each cooling system are different, the energy consumption is low, and the reliability is high.

[0017] 2. Single-circuit double-water pump in series, which can improve the cooling circuit flow, ensure the reliability of the cooling system power, improve the cooling efficiency, and reduce the problem of poor cooling effect caused by large resistance.

[0018] 3. Four-wheel independent cooling.

[0019] The cooling pipeline and components can be arranged nearby, the complex pipeline layout of the four-wheel cooling pipeline to the same radiator is reduced, the space is saved, the pipeline complexity is reduced, and the overall vehicle structure space layout is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the structure principle diagram of the four-wheel independent cooling type unmanned mine vehicle cooling system in the present application. DETAILED DESCRIPTION

[0021] The following description fully illustrates specific embodiments of the application to enable one of ordinary skill in the art to practice and reproduce the application.

[0022] As Figure 1 shown is the structural principle diagram of the cooling system of the four-wheel independent cooling type new energy unmanned mine vehicle in the application.

[0023] The four-wheel independent cooling type unmanned mine vehicle cooling system comprises four independent cooling circuits, and each cooling circuit comprises a radiator 1, a first water pump 2, a heat dissipation module of a controller 3, a second water pump 4, and a heat dissipation device of a driving motor 5. The radiator 1, the first water pump 2, the heat dissipation module of the controller 3, the second water pump 4, and the heat dissipation device of the driving motor 5 are sequentially connected at the head and tail through a cooling pipeline. The first water pump 2 and the second water pump 4 are respectively connected at the two sides of the heat dissipation module. The driving motor 5 is located at the rear end of the second water pump 4.

[0024] The radiator 1, the first water pump 2, the heat dissipation module of the controller 3, the second water pump 4, and the heat dissipation device of the driving motor 5 are connected in series in the cooling circuit to form a closed loop.

[0025] The four cooling circuits have the same working principle. Each cooling circuit comprises an independent radiator 1 and a water pump 2. The four independent cooling circuits respectively cool the driving motors 5 and the controllers 3 of the left front wheel, the left rear wheel, the right front wheel, and the right rear wheel of the vehicle. The four driving motors 5 and the controllers 4 of the vehicle are independently cooled, and do not affect each other.

[0026] When the cooling system works, the four driving motors 5 and the controllers 3 correspond to the four cooling circuits. Each cooling circuit works independently and does not affect each other. When steering and slipping and other factors cause the driving motors 5 to heat at different rates due to different workloads, the cooling capacity of each cooling circuit is matched in real time according to the heating capacity of each driving motor 5, which can improve the cooling efficiency, avoid overcooling, and reduce energy consumption.

[0027] The four-wheel independent cooling type unmanned mine vehicle cooling method comprises the following specific steps:

[0028] Step 1: During the driving process of the unmanned mine vehicle, when steering or wheel slipping occurs, the output power of the driving motors 5 of the four wheels is different, resulting in different heating capacities of the driving motors 5 and the controllers 3 corresponding to the four wheels. The controllers 3 corresponding to the four wheels control the output power of the first water pump 2 and the second water pump 4 according to the heating capacity of the circuit to match the heating capacity.

[0029] The controller 3 controls the output power of the first water pump 2 and the second water pump 4 to match the heat generation of the controller 3 and the heat generation of the driving motor 5 respectively. The sum of the heat generation of the controller 3 and the heat generation of the driving motor 5 is the heat generation of the circuit.

[0030] Step 2: The first water pump 2 delivers the cooling liquid cooled in the radiator 1 to the heat dissipation module of the controller 3, and the second water pump 4 delivers the cooling liquid heated in the heat dissipation module to the heat dissipation device of the driving motor 5, and the cooling liquid heated twice enters the radiator 1 for cooling.

[0031] Since the system resistance is large, each cooling circuit is connected in series with two water pumps (the first water pump 2 and the second water pump 4), and when the cooling circuit works, the cooling liquid is powered by the first water pump 2 from the radiator 1 to the heat dissipation module of the controller 3, the power of the cooling liquid flowing out of the heat dissipation module of the controller 3 is reduced, and the cooling liquid is powered by the second water pump 4 connected in series to flow to the heat dissipation device of the driving motor 5, and finally flows back to the radiator 1, and the radiator 1 cools the heated cooling liquid, thereby achieving the cooling of the driving motor 5 and the controller 3.

[0032] The terms used in the present application are illustrative and exemplary, but not limiting terms. Since the present application can be embodied in various forms without departing from the spirit or essential characteristics of the technical solution, it should be understood that the above embodiments are not limited to any of the above details, but should be interpreted broadly within the spirit and scope of the appended claims, and therefore all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A cooling system for a four-wheel independent cooling type unmanned mine vehicle, characterized in that, The application relates to a four-wheel drive unmanned mine vehicle cooling system. The four independent cooling circuits comprise a radiator, a first water pump, a heat dissipation module of a controller, a second water pump and a heat dissipation device of a driving motor, the radiator, the first water pump, the heat dissipation module, the second water pump and the heat dissipation device are sequentially connected through cooling pipelines and form a closed loop, the first water pump and the second water pump are respectively connected on the two sides of the heat dissipation module, and the driving motor is located at the rear end of the second water pump.

2. The four-wheel independent cooling type unmanned mine vehicle cooling system according to claim 1, characterized in that, The radiator, the first water pump, the heat dissipation module, the second water pump and the heat dissipation device are connected in series in the cooling circuit and form a closed loop.

3. The four-wheel independent cooling type unmanned mine vehicle cooling system according to claim 1, characterized in that, The four independent cooling circuits are respectively used for cooling driving motors and controllers of left front wheels, left rear wheels, right front wheels and right rear wheels of the whole vehicle.

4. The method of claim 1-3, wherein, The application relates to a four-wheel drive unmanned mine vehicle cooling system. When the unmanned mine vehicle drives, the output powers of the driving motors of the four wheels are different when the vehicle turns or the wheels slip, the heating amounts of the driving motors and the controllers corresponding to the four wheels are different, the controllers corresponding to the four wheels control the output powers of the first water pump and the second water pump according to the heating amounts of the circuits, and the output powers of the first water pump and the second water pump are matched with the heating amounts. The first water pump transports the cooling liquid cooled in the radiator to the heat dissipation module of the controller, the second water pump transports the cooling liquid heated in the heat dissipation module to the heat dissipation device of the driving motor, and the twice-heated cooling liquid enters the radiator to be cooled.

5. The cooling method of the four-wheel independent cooling type unmanned mine vehicle according to claim 4, characterized in that, The controllers control the output powers of the first water pump and the second water pump according to the heating amounts of the controllers and the heating amounts of the driving motors, the output powers of the first water pump and the second water pump are matched with the heating amounts of the controllers and the heating amounts of the driving motors, and the sum of the heating amounts of the controllers and the heating amounts of the driving motors is the heating amount of the circuit.

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