Electric control heat dissipation system for motor of extended-range electric wide-body vehicle

Abstract

The utility model provides an electric control heat dissipation system for a motor of an extended-range electric wide-body vehicle. The electric control heat dissipation system comprises a heat dissipation device assembly, a pump set communicated with the heat dissipation device assembly through a water pipe and a working assembly communicated with the heat dissipation device assembly through the pump set. The working assembly comprises control electric appliances and execution electric appliances, at least one control electric appliance and at least one execution electric appliance or at least two control electric appliances or at least two execution electric appliances are arranged on the same cooling loop, and the number of the cooling loops is at least two; and when the control electric appliances exist in the cooling loop, the control electric appliances are distributed at one end close to the pump set. According to the utility model, a plurality of cooling loops are arranged, and after heat exchange and cooling of the electric appliance are controlled, the heated cooling water exchanges heat and cools the execution electric appliance, so that heat dissipation balance can be realized, the heat exchange requirement of each electric appliance is guaranteed, and the arrangement of the plurality of loops further improves the heat dissipation balance and guarantees the healthy use of the equipment; the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to an electric motor control and heat dissipation system for a range-extended electric wide-body vehicle, belonging to the field of engineering machinery technology. Background Technology

[0002] The motors and electronic controls of range-extended electric wide-body vehicles generate a significant amount of heat during high-load operation. If this heat cannot be dissipated effectively and promptly, it will cause the motor and electronic control system temperatures to rise, affecting performance and lifespan, and potentially even leading to safety accidents. Currently, the cooling systems for the motors and electronic controls of electric wide-body vehicles have the following drawbacks: 1. Clogged cooling systems hinder heat dissipation: Harsh mining environments with high dust and sandstorms can easily clog radiators, leading to poor heat dissipation and making fans susceptible to damage from foreign objects. 2. Uneven temperature distribution between components: Traditional cooling systems use a series of pipes connecting all cooling components, with the water temperature gradually increasing during flow. However, in actual operation of electric wide-body vehicles, significant temperature differences between components have been observed, resulting in uneven heat dissipation. 3. Lack of real-time monitoring and intelligent control: Most current cooling systems cannot monitor the temperature changes of the motor and electronic control system in real time, and cannot intelligently adjust according to actual temperature conditions, leading to energy waste or untimely heat dissipation. 4. Low heat dissipation efficiency: Existing fan power is low, resulting in low overall system heat dissipation efficiency. Summary of the Invention

[0003] Purpose of the invention: To address the shortcomings of existing technologies, this invention provides a range-extended electric wide-body vehicle motor control and cooling system to solve the problems mentioned in the background.

[0004] Technical solution: A range-extended electric wide-body vehicle motor control and cooling system, including a radiator assembly, a pump unit connected to the radiator assembly via water pipes, and a working assembly connected to the radiator assembly via the pump unit;

[0005] The work assembly includes control electrical appliances and actuating electrical appliances, and at least one control electrical appliance and at least one actuating electrical appliance, or at least two control electrical appliances or at least two actuating electrical appliances are arranged on the same cooling circuit, and at least two cooling circuits are provided;

[0006] When there are control electrical appliances in the cooling circuit, the control electrical appliances are located at the end closest to the pump set.

[0007] This invention sets up multiple cooling circuits, with the control appliances requiring lower water temperature placed first, followed by the execution appliances requiring higher water temperature. After the control appliances exchange heat and cool down, the heated cooling water then exchanges heat and cools the execution appliances, achieving balanced heat dissipation and ensuring the heat exchange needs of each appliance. The multiple circuits further enhance the evenness of heat dissipation, ensuring the healthy use of the equipment and extending its service life.

[0008] The radiator assembly includes a protective cover, a plate-shaped radiator core installed inside the protective cover, and a cooling fan assembly installed on the side of the radiator core.

[0009] The protective cover has evenly distributed ventilation meshes on the side near the cooling fan assembly.

[0010] Ventilation mesh is installed to allow the cooling fan assembly to effectively intake air while preventing large impurities from entering the radiator assembly during equipment operation and causing blockages that could affect its normal operation. The aperture size of the ventilation mesh varies depending on the equipment model. The aperture size is determined by minimizing the aperture size while still meeting the heat dissipation requirements. The balance between protection and air resistance is found through experiments to determine the appropriate aperture size.

[0011] The cooling fan assembly includes a pair of first fan groups, second fan groups, and third fan groups arranged sequentially from top to bottom, wherein the fan diameters of the first fan groups and the third fan groups are larger than the fan diameter of the second fan group.

[0012] Due to space constraints in different radiator assemblies, and in order to achieve better heat dissipation, the cooling fan assembly is set up with fan groups of different sizes. The fan groups on the top and bottom sides have the same diameter, while the fan group in the middle, which has less space, has a smaller diameter than the top and bottom sides. Compared to multiple small-diameter fan groups, the air intake volume is greater in the same amount of time, resulting in better heat dissipation, while saving power consumption and achieving higher heat dissipation efficiency.

[0013] The cooling fan assembly includes a pair of first fan groups, second fan groups, and third fan groups arranged sequentially from top to bottom, with the fan diameters of the first fan groups, second fan groups, and third fan groups being equal.

[0014] When space permits, using multiple sets of larger diameter fans can provide better heat dissipation, further improve heat dissipation efficiency, and meet the heat dissipation needs of electrical equipment with multiple circuit settings.

[0015] The radiator core is provided with an inlet at the upper end and an outlet at the lower end. The pump unit is connected to the outlet, and the return pipe in the cooling circuit is connected to the inlet.

[0016] A water jug ​​connected to the water inlet is provided above the water inlet, and the water jug ​​is used to replenish the cooling water flowing in the radiator core and cooling circuit.

[0017] Since cooling water is lost during the heat exchange process, a water tank can replenish the cooling water in a timely manner, ensuring sufficient cooling water volume and guaranteeing the heat dissipation effect provided by the radiator assembly.

[0018] Temperature sensors are installed at both the inlet and outlet of the water system. The temperature sensors are connected to the VCU of the whole machine, which controls the speed of the first fan group, the second fan group and the third fan group.

[0019] To achieve more intelligent control of the cooling fan assembly, the fan speed is controlled by monitoring the cooling water temperature at the inlet and outlet. The fan speed is controlled using a duty cycle, which is adjusted based on the inlet water temperature sensor readings. Higher inlet water temperature results in a larger duty cycle and a faster fan speed.

[0020] The control electrical components include: a rear drive motor controller, a DC module, a generator controller, a first seven-in-one controller, and a second seven-in-one controller.

[0021] The electrical appliances used for execution include: a generator, a lifting motor, a gearbox, a steering motor, a front drive motor, an air compressor, and a rear drive motor;

[0022] The pump set includes: a first water pump, a second water pump, a third water pump, and a fourth water pump;

[0023] The cooling circuit is configured with 4 lines.

[0024] The cooling circuit includes:

[0025] First cooling circuit: The cooling circuit from the outlet of the first water pump to the inlet of the radiator core connects the air compressor, DC module, rear drive motor controller and the cooling device built into the rear drive motor in sequence along the direction of cooling water flow; wherein, the cooling devices of the air compressor and the DC module are connected in parallel.

[0026] Second cooling circuit: The cooling circuit from the outlet of the second water pump to the inlet of the radiator core connects the first seven-in-one controller, the second seven-in-one controller, and the cooling device on the generator in sequence along the direction of cooling water flow; wherein the cooling devices of the first seven-in-one controller and the second seven-in-one controller are connected in parallel.

[0027] The third cooling circuit: The cooling circuit from the outlet of the third water pump to the inlet of the radiator core connects the cooling devices on the lifting motor and the front drive motor in sequence along the direction of the cooling water flow.

[0028] Fourth cooling circuit: The cooling circuit from the outlet of the fourth water pump to the inlet of the radiator core connects the generator controller, steering motor and the cooling device on the gearbox in sequence along the direction of cooling water flow.

[0029] Since the cooling water flow required for the air compressor, DC module, first seven-in-one controller and second seven-in-one controller is relatively small, in order to avoid the cooling water generating flow resistance when flowing through the cooling device with small flow requirements, which would affect the heat dissipation effect of subsequent electrical equipment, the electrical equipment with small flow requirements is connected in parallel. The flow is first split for heat dissipation and then combined with the flow to exchange heat with the next electrical equipment for cooling, ensuring the heat dissipation effect of the overall cooling circuit, while avoiding the problem of excessive flow resistance caused by series connection.

[0030] Beneficial effects: This utility model sets up multiple cooling circuits, and arranges the control electrical appliances with lower water temperature requirements in the order of operation, followed by the execution electrical appliances with higher water temperature requirements. After the control electrical appliances exchange heat and cool down, the heated cooling water then exchanges heat and cools down the execution electrical appliances. This achieves balanced heat dissipation, ensuring the heat exchange needs of each electrical appliance. The setting of multiple circuits further improves the uniformity of heat dissipation, ensures the healthy use of the equipment, and extends its service life.

[0031] Due to space constraints in different radiator assemblies, and in order to achieve better heat dissipation, the cooling fan assembly is set up with fan groups of different sizes. The fan groups on the top and bottom sides have the same diameter, while the fan group in the middle, which has less space, has a smaller diameter than the top and bottom sides. Compared to multiple small-diameter fan groups, the air intake volume is greater in the same amount of time, resulting in better heat dissipation, while saving power consumption and achieving higher heat dissipation efficiency.

[0032] Since the cooling water flow required for the air compressor, DC module, first seven-in-one controller and second seven-in-one controller is relatively small, in order to avoid the cooling water generating flow resistance when flowing through the cooling device with small flow requirements, which would affect the heat dissipation effect of subsequent electrical equipment, the electrical equipment with small flow requirements is connected in parallel. The flow is first split for heat dissipation and then combined with the flow to exchange heat with the next electrical equipment for cooling, ensuring the heat dissipation effect of the overall cooling circuit, while avoiding the problem of excessive flow resistance caused by series connection. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0034] Figure 1This is a schematic diagram showing the connection between the radiator assembly of this utility model and various electrical devices.

[0035] Figure 2 This is a schematic diagram of the structural layout of the working assembly of this utility model.

[0036] Figure 3 This is a schematic diagram of the heat sink assembly structure of this utility model, in which the temperature sensor is built-in and therefore omitted in the attached drawing.

[0037] Figure 4 This is a schematic diagram of the back connection structure of the radiator assembly of this utility model.

[0038] Figure 5 This is a schematic diagram showing the coolant flow direction of the four cooling circuits in this utility model. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] like Figures 1 to 5As shown, a range-extended electric wide-body vehicle motor control and cooling system includes a radiator assembly 1, a pump group 2 connected to the radiator assembly 1 via a water pipe, and a working assembly 3 connected to the radiator assembly 1 via the pump group 2.

[0043] The working assembly 3 includes control electrical appliances and execution electrical appliances. At least one control electrical appliance and at least one execution electrical appliance, or at least two control electrical appliances or at least two execution electrical appliances are arranged on the same cooling circuit, and at least two cooling circuits are provided.

[0044] When there are control electrical appliances in the cooling circuit, the control electrical appliances are located at the end closest to pump group 2.

[0045] This invention sets up multiple cooling circuits, with the control appliances requiring lower water temperature placed first, followed by the execution appliances requiring higher water temperature. After the control appliances exchange heat and cool down, the heated cooling water then exchanges heat and cools the execution appliances, achieving balanced heat dissipation and ensuring the heat exchange needs of each appliance. The multiple circuits further enhance the evenness of heat dissipation, ensuring the healthy use of the equipment and extending its service life. Example

[0046] The radiator assembly 1 includes a protective cover 11, a plate-shaped radiator core 12 installed inside the protective cover 11, and a cooling fan assembly installed on the side of the radiator core 12.

[0047] The protective cover 11 has evenly distributed ventilation mesh 13 on the side near the cooling fan assembly.

[0048] A ventilation mesh 13 is provided to allow effective air intake for the cooling fan assembly, while preventing larger impurities from entering the radiator assembly 1 during equipment operation and causing blockages that could affect its normal operation. The aperture size of the ventilation mesh 13 varies depending on the equipment model, aiming to minimize the aperture while still meeting heat dissipation requirements. The aperture size is determined experimentally by finding a balance between protection and air resistance. In this embodiment, the aperture size is set to 30mm.

[0049] The cooling fan assembly includes a pair of first fan group 14, second fan group 15 and third fan group 16 arranged from top to bottom, wherein the fan diameter of the first fan group 14 and the third fan group 16 is larger than the fan diameter of the second fan group 15.

[0050] Due to space constraints in different models of heatsink assemblies, and in order to achieve better heat dissipation, the cooling fan assembly is set up with fan groups of different sizes. The fan groups on the top and bottom sides have the same diameter, while the fan group in the middle with less space has a smaller diameter than the top and bottom sides. Compared with multiple small-diameter fan groups, the air intake volume is greater in the same amount of time, resulting in better heat dissipation, while saving power consumption and achieving higher heat dissipation efficiency. Example

[0051] The cooling fan assembly includes a pair of first fan group 14, second fan group 15 and third fan group 16 arranged from top to bottom, wherein the fan diameters of the first fan group 14, second fan group 15 and third fan group 16 are equal.

[0052] When space permits, using multiple sets of larger diameter fans can provide better heat dissipation, further improve heat dissipation efficiency, and meet the heat dissipation needs of electrical equipment with multiple circuit settings. Example

[0053] The radiator core 12 is provided with an inlet 17 at the upper end and an outlet 18 at the lower end. The pump group 2 is connected to the outlet 18, and the return pipe in the cooling circuit is connected to the inlet 17.

[0054] A water tank 19, which is connected to the water inlet 17, is provided above the water inlet 17. The water tank 19 is used to replenish the cooling water flowing in the radiator core 12 and the cooling circuit.

[0055] Since cooling water will be lost during the heat exchange process, the water tank 19 can replenish the cooling water in time to ensure sufficient cooling water volume and ensure the heat dissipation effect provided by the radiator assembly 1.

[0056] Temperature sensors are installed at both the inlet 17 and the outlet 18. The temperature sensors are connected to the VCU of the whole machine. The VCU of the whole machine controls the speed of the first fan group 14, the second fan group 15 and the third fan group 16.

[0057] To achieve more intelligent control of the cooling fan assembly, the fan speed is controlled by monitoring the cooling water temperature at the inlet 17 and outlet 18. The fan speed is controlled using duty cycle, which is adjusted based on the inlet water temperature sensor readings. The higher the inlet water temperature, the larger the duty cycle, and the faster the fan speed. Example

[0058] The control electrical components include: a rear drive motor controller 31, a DC module 32, a generator controller 33, a first seven-in-one controller 34, and a second seven-in-one controller 35.

[0059] The electrical appliances used for execution include: generator 36, lifting motor 37, gearbox 38, steering motor 39, front drive motor 310, air compressor 311 and rear drive motor 312;

[0060] The pump set 2 includes: a first water pump 21, a second water pump 22, a third water pump 23 and a fourth water pump 24;

[0061] The cooling circuit is configured with 4 lines.

[0062] The cooling circuit includes:

[0063] First cooling circuit: In the cooling circuit from the outlet of the first water pump 21 to the inlet 17 of the radiator core 12, the air compressor 311, DC module 32, rear drive motor controller 31 and the cooling device built into the rear drive motor 312 are connected in sequence along the direction of cooling water flow; wherein, the cooling devices of the air compressor 311 and the DC module 32 are connected in parallel.

[0064] Second cooling circuit: On the cooling circuit from the outlet of the second water pump 22 to the inlet 17 of the radiator core 12, the cooling devices of the first seven-in-one controller 34, the second seven-in-one controller 35 and the generator 36 are connected in sequence along the direction of cooling water flow; wherein, the cooling devices of the first seven-in-one controller 34 and the second seven-in-one controller 35 are connected in parallel.

[0065] The third cooling circuit: along the cooling water flow direction, the cooling devices built into the lifting motor 37 and the front drive motor 310 are connected sequentially from the outlet of the third water pump 23 to the inlet 17 of the radiator core 12.

[0066] Fourth cooling circuit: The cooling circuit from the outlet of the fourth water pump 24 to the inlet 17 of the radiator core 12 connects the generator controller 33, the steering motor 39 and the cooling device on the gearbox 38 in sequence along the direction of cooling water flow.

[0067] Since the cooling water flow required for the air compressor 311, DC module 32, first seven-in-one controller 34, and second seven-in-one controller 35 is relatively small, to avoid flow resistance when the cooling water flows through the cooling devices with small flow requirements, which would affect the heat dissipation effect of subsequent electrical equipment, the electrical equipment with small flow requirements is connected in parallel. The flow is first split for heat dissipation and then combined to exchange heat with the next electrical equipment, ensuring the overall cooling circuit's heat dissipation effect and avoiding the problem of excessive flow resistance caused by series connection. In this embodiment, the flow requirement of the first seven-in-one controller 34 and the second seven-in-one controller 35 is 30L / min, and the generator flow requirement is 60L / min.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0069] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A range-extended electric wide-body vehicle motor control cooling system, comprising a radiator assembly (1), a pump unit (2) connected to the radiator assembly (1) via a water pipe, and a working assembly (3) connected to the radiator assembly (1) via the pump unit (2). characterized in that The work assembly (3) includes control electrical appliances and execution electrical appliances, at least one control electrical appliance and at least one execution electrical appliance or at least two control electrical appliances or at least two execution electrical appliances are arranged on the same cooling circuit, and at least two cooling circuits are provided; When there are control electrical appliances in the cooling circuit, the control electrical appliances are distributed at the end closest to the pump group (2).

2. The electric control heat dissipation system of the extended-range electric wide-body vehicle motor according to claim 1, characterized in that: The radiator assembly (1) includes a protective cover (11), a plate-shaped radiator core (12) installed inside the protective cover (11), and a cooling fan assembly installed on the side of the radiator core (12); The protective cover (11) has evenly distributed ventilation mesh (13) on the side near the cooling fan assembly.

3. The electric control heat dissipation system of the extended-range electric wide-body vehicle motor according to claim 2, characterized in that: The cooling fan assembly includes a pair of first fan group (14), second fan group (15) and third fan group (16) arranged from top to bottom, wherein the fan diameter of the first fan group (14) and the third fan group (16) is larger than the fan diameter of the second fan group (15).

4. The electric control heat dissipation system of the extended-range electric wide-body vehicle motor according to claim 2, characterized in that: The cooling fan assembly includes a pair of first fan group (14), second fan group (15) and third fan group (16) arranged from top to bottom, with the fan diameters of the first fan group (14), second fan group (15) and third fan group (16) being equal.

5. The electric control heat dissipation system of the extended-range electric wide-body vehicle motor according to claim 2, characterized in that: The radiator core (12) has an inlet (17) at the upper end and an outlet (18) at the lower end. The pump group (2) is connected to the outlet (18), and the return pipe in the cooling circuit is connected to the inlet (17). A water jug ​​(19) is provided above the water inlet (17) and is connected to the water inlet (17). The water jug ​​(19) is used to replenish the cooling water flowing in the radiator core (12) and the cooling circuit.

6. The electric control heat dissipation system of the extended-range electric wide-body vehicle motor according to claim 5, characterized in that: Temperature sensors are installed at both the inlet (17) and outlet (18). The temperature sensors are connected to the VCU of the whole machine. The VCU of the whole machine controls the speed of the first fan group (14), the second fan group (15) and the third fan group (16).

7. The range-extended electric wide-body vehicle motor control and cooling system according to claim 1, characterized in that: The control electrical appliances include: a rear drive motor controller (31), a DC module (32), a generator controller (33), a first seven-in-one controller (34), and a second seven-in-one controller (35); The electrical appliances used for execution include: a generator (36), a lifting motor (37), a gearbox (38), a steering motor (39), a front drive motor (310), an air compressor (311), and a rear drive motor (312). The pump set (2) includes: a first water pump (21), a second water pump (22), a third water pump (23) and a fourth water pump (24); The cooling circuit is configured with 4 lines.

8. The range-extended electric wide-body vehicle motor control and cooling system according to claim 7, characterized in that: The cooling circuit includes: First cooling circuit: along the cooling circuit from the outlet of the first water pump (21) to the inlet (17) of the radiator core (12), the air compressor (311), DC module (32), rear drive motor controller (31) and the cooling device on the rear drive motor are connected in sequence along the direction of cooling water flow; wherein, the cooling devices of the air compressor (311) and the DC module (32) are connected in parallel; Second cooling circuit: The cooling circuit from the outlet of the second water pump (22) to the inlet (17) of the radiator core (12) connects the cooling devices of the first seven-in-one controller (34), the second seven-in-one controller (35) and the generator (36) in sequence along the direction of cooling water flow; wherein the cooling devices of the first seven-in-one controller (34) and the second seven-in-one controller (35) are connected in parallel; The third cooling circuit: along the cooling circuit from the outlet of the third water pump (23) to the inlet (17) of the radiator core (12), the cooling devices on the lifting motor (37) and the front drive motor (310) are connected in sequence along the direction of the cooling water flow. Fourth cooling circuit: The cooling circuit from the outlet of the fourth water pump (24) to the inlet (17) of the radiator core (12) connects the generator controller (33), steering motor (39) and the cooling device on the gearbox (38) in sequence along the direction of cooling water flow.

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