A traction water-cooled converter

Abstract

This utility model provides a traction water-cooled converter, belonging to the field of motor controller technology. It includes: a traction water-cooled converter housing, a motor cable maintenance cover, and inlet / outlet water connectors; the traction water-cooled converter housing has maintenance ports for the power cables of the diesel generator and asynchronous motor installed in the vehicle, and a correspondingly sized motor cable maintenance cover on the side connected to the diesel generator; the inlet / outlet water connectors are located on the side of the traction water-cooled converter housing and connect to the water-cooling module inside the housing; the vehicle's coolant enters and exits the traction water-cooled converter through the inlet / outlet water connectors. The traction water-cooled converter housing includes: a diesel generator input copper busbar connected to a rectifier IGBT module, which is connected to an inverter IGBT module; and an inverter IGBT module connected to the converter output copper busbar, realizing the conversion of the three-phase AC power generated by the diesel generator to DC power by the rectifier IGBT module, and then back to AC power by the inverter IGBT module. This method makes full use of space.

Description

Technical Field

[0001] This utility model relates to the field of motor controller technology, and in particular to a traction water-cooled converter. Background Technology

[0002] Traditional wheeled agricultural tractor transmission systems typically employ mechanical transmissions, primarily consisting of a clutch, a mechanical gearbox, and a drive system. During operation, a diesel engine provides power, which is then transmitted through a complex mechanical structure including gearboxes. Shifting gears requires the driver to operate the mechanical gearbox and clutch, making the process complex. Furthermore, high-horsepower tractors typically operate at low speeds and under heavy loads in farmland, necessitating frequent gear changes and constant shifting of gearbox ratios. This can easily lead to damage from overloading of transmission components or improper operation, resulting in reduced equipment lifespan and increased maintenance costs.

[0003] Existing integrated control systems in electric tractors utilize water-cooled traction converters that rectify the electrical energy generated by the diesel generator into direct current (DC) and then invert it into stable alternating current (AC) output to power the asynchronous motor. Simultaneously, the combined optimized control of the diesel generator and asynchronous motor effectively improves fuel efficiency and transmission system efficiency, resulting in greater energy savings and environmental friendliness.

[0004] However, in practical use, its structure and size need to be further optimized while avoiding signal interference. Summary of the Invention

[0005] In view of this, a traction water-cooled converter is provided. This utility model mainly optimizes space by arranging the control board and the input and output copper busbars of the traction water-cooled converter vertically, and achieves separate arrangement of power cables and control cables.

[0006] The technical means adopted in this utility model are as follows:

[0007] A traction water-cooled converter, comprising:

[0008] Traction water-cooled converter housing, motor wire maintenance cover, and inlet / outlet water connectors;

[0009] The traction water-cooled converter housing is equipped with maintenance ports for the power cables of the diesel generator and asynchronous motor installed on the vehicle side, as well as motor cable maintenance covers of the corresponding size, on the side connected to the diesel generator.

[0010] The inlet and outlet water connectors are located on the side of the traction water-cooled converter housing and connect to the water-cooling module inside the traction water-cooled converter housing; the vehicle coolant enters and exits the traction water-cooled converter through the inlet and outlet water connectors to cool the traction water-cooled converter.

[0011] The interior of the traction water-cooled converter housing includes:

[0012] The diesel generator consists of an input copper busbar, a current sensor, an output copper busbar of the converter, an output current sensor, a chopper current sensor, a chopper copper busbar, a chopper resistor, a surge capacitor, a rectifier IGBT module, a rectifier composite busbar, an inverter IGBT module, a chopper IGBT module, a support capacitor, a slow discharge resistor, and a control board.

[0013] The diesel generator input copper busbar is connected to the rectifier IGBT module, and the rectifier IGBT module is connected to the inverter IGBT module; the inverter IGBT module is connected to the converter output copper busbar, so that the three-phase AC power generated by the diesel generator is converted into DC power by the rectifier IGBT module, and then converted into AC power by the inverter IGBT module.

[0014] Furthermore, the side of the rectifier composite busbar is a right-angled Z-shaped zigzag line, connecting the rectifier IGBT module, support capacitor, inverter IGBT module, and chopper IGBT module into a whole, including:

[0015] The bottom of the Z-shape has multiple ports for connecting to the rectifier IGBT module, the inverter IGBT module, and the chopper IGBT module, respectively; the lower part of the top of the Z-shape has supporting capacitors.

[0016] Furthermore, the surge capacitor is disposed on each IGBT module to absorb the peak voltage of each IGBT module.

[0017] Furthermore, the control board assembly is located on the upper layer of the diesel generator input copper busbar.

[0018] Furthermore, the water-cooling module is located below the input copper busbar of the diesel generator.

[0019] Furthermore, the chopper resistor is located below the supporting capacitor.

[0020] Furthermore, the interior of the traction water-cooled converter housing also includes:

[0021] The grounding detection module can detect and shut down the traction water-cooled converter in a timely manner when a grounding occurs.

[0022] The intermediate circuit voltage sensor measures the intermediate circuit voltage value.

[0023] Furthermore, it also includes:

[0024] The traction water-cooled converter enclosure is a cuboid, equipped with a traction water-cooled converter top cover of corresponding size; a double-layer sealing strip is installed between the traction water-cooled converter top cover and the traction water-cooled converter enclosure, and the traction water-cooled converter top cover is bolted to the traction water-cooled converter enclosure.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. By arranging the control board components and the input and output copper busbars of the traction water-cooled converter vertically, the power cables and control cables are separated, thus avoiding signal interference problems.

[0027] 2. The traction water-cooled converter housing has a built-in water-cooling channel, and by optimizing the wiring layout between the IGBT module and the control board, the volume of the traction water-cooled converter is effectively reduced, achieving the design goals of lightweight and miniaturization.

[0028] 3. The traction water-cooled converter has a built-in control board, which can realize the joint optimized control of the diesel generator and asynchronous motor. It can effectively improve fuel utilization and transmission system efficiency, making it more energy-saving and environmentally friendly. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the traction water-cooled converter structure of this utility model.

[0031] Figure 2 This is a schematic diagram of the control circuit of the traction water-cooled converter of this utility model.

[0032] Figure 3 This is a schematic diagram of the main circuit of the traction water-cooled converter of this utility model.

[0033] Figure 4 This is a side view of the traction water-cooled converter of this utility model.

[0034] In the diagram: 1. Diesel generator input copper busbar; 2. Input current sensor; 3. Rectifier IGBT module; 4. Surge capacitor; 5. Support capacitor; 6. Rectifier composite busbar; 7. Inverter IGBT module; 8. Output current sensor; 9. Converter output copper busbar; 10. Chopper IGBT module; 11. Chopper current sensor; 12. Chopper copper busbar; 13. Chopper resistor; 14. Grounding detection module; 15. Intermediate circuit voltage sensor; 16. Slow discharge resistor; 17. Control board components; 18. Heavy-duty connector; 19. Traction water-cooled converter housing; 20. Traction water-cooled converter top cover; 21. Motor line maintenance cover; 22. Inlet and outlet water connectors. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0040] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0041] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0042] like Figures 1-3 As shown, this utility model provides a traction water-cooled converter. Based on existing traction water-cooled converters for electric tractors with integrated control functions, it optimizes the structure and electrical scheme to achieve separate arrangement of power cables and control cables, avoiding signal interference problems, reducing the size and weight of the traction water-cooled converter, and achieving the design goals of lightweighting and miniaturization. This traction water-cooled converter rectifies the electrical energy generated by the diesel generator into DC power and then inverts it into stable AC power output to power the asynchronous motor. Simultaneously, it employs water cooling for heat dissipation, effectively reducing the size and weight of the traction water-cooled converter, achieving the design goals of high integration, lightweighting, and miniaturization.

[0043] Example 1

[0044] A traction water-cooled converter, comprising:

[0045] The traction water-cooled converter top cover 20, the traction water-cooled converter housing 19, the motor line maintenance cover 21, and the inlet and outlet water connectors 22.

[0046] The traction water-cooled converter housing 19 is a cuboid, equipped with a traction water-cooled converter top cover plate 20 of corresponding size; a double-layer sealing strip is installed between the traction water-cooled converter top cover plate 20 and the traction water-cooled converter housing 19, and the traction water-cooled converter top cover plate 20 is installed on the traction water-cooled converter housing 19 by bolts.

[0047] The traction water-cooled converter housing 19 is equipped with a maintenance port for the power cables of the diesel generator and asynchronous motor installed on the diesel generator side, as well as a motor cable maintenance cover 21 of the corresponding size.

[0048] The inlet / outlet water connector 22 is located on the side of the traction water-cooled converter housing 19 and connects to the water-cooling module inside the traction water-cooled converter housing 19; the vehicle coolant enters and exits the traction water-cooled converter through the inlet / outlet water connector 22 to cool the traction water-cooled converter.

[0049] The heavy-duty connector 18 is located on the side of the traction water-cooled converter housing 19, connecting the control board assembly 17 to the vehicle, enabling network communication between the traction water-cooled converter and the vehicle.

[0050] The interior of the traction water-cooled converter housing 19 includes:

[0051] The components 17 consist of a diesel generator input copper busbar 1, a current sensor 2, an inverter output copper busbar 9, an output current sensor 8, a chopper current sensor 11, a chopper copper busbar 12, a chopper resistor 13, a surge capacitor 4, a rectifier IGBT module 3, a rectifier composite busbar 6, an inverter IGBT module 7, a chopper IGBT module 10, a support capacitor 5, a slow discharge resistor 16, and a control board.

[0052] The diesel generator input copper busbar 1 is fixed on the rectifier IGBT module 3, and the current sensor 2 is installed at the connection between the diesel generator input copper busbar 1 and the rectifier IGBT module 3.

[0053] The three-phase AC power generated by the diesel generator passes sequentially through the diesel generator input copper busbar 1 and the input current sensor 2 before entering the rectifier IGBT module 3.

[0054] The rectifier IGBT3 rectifies the three-phase AC power into DC power; the surge capacitor 4 absorbs the voltage spike when the rectifier IGBT module 3 is turned off, reduces the electrical stress of the entire converter circuit, and improves the service life of the rectifier IGBT module 3.

[0055] The side of the rectifier composite busbar 6 features a right-angled Z-shaped bend, connecting the rectifier IGBT module 3, support capacitor 5, inverter IGBT module 7, and chopper IGBT module 10 into a single unit. This reduces stray inductance in the commutation circuit and improves the overall space utilization of the module. Specifically:

[0056] The bottom of the Z-shaped structure has multiple ports that connect to the rectifier IGBT module 3, the inverter IGBT module 7, and the chopper IGBT module 10, respectively; the lower space at the top of the Z-shaped structure has a support capacitor 5; and the surge capacitor 4 is located on each IGBT module.

[0057] The inverter IGBT module 7 inverts the DC power rectified by the rectifier IGBT module 3 into AC power of higher quality. The surge capacitor 4 can also absorb the peak voltage when the inverter IGBT module 7 is turned on and turned off.

[0058] The converter output copper busbar 9 is fixed to the inverter IGBT module 7, and the output current sensor 8 is installed at the connection between the converter output copper busbar 9 and the inverter IGBT module 7.

[0059] The control board 17 is located above the diesel generator input copper busbar 1. It is used for logic control of the rectifier IGBT module 3, inverter IGBT module 7, and chopper IGBT module 10. It also serves as the central hub for network communication between the traction water-cooled converter and the vehicle, performing joint optimized control of the diesel generator and asynchronous motor. This effectively improves fuel efficiency and transmission system efficiency, resulting in greater energy savings and environmental friendliness.

[0060] The slow discharge resistor 16 is used to slowly release the charge in the support capacitor 5 after the traction water-cooled converter is shut down.

[0061] Example 2

[0062] The inverted AC power passes sequentially through the output current sensor 8 and the converter output copper bus 9 to output high-quality AC power to the tractor asynchronous motor;

[0063] The chopper IGBT module 10 is turned on when the tractor brakes, and transmits the circuit energy to the chopper resistor 13 through the chopper current sensor 11 and the chopper copper bus 12 for consumption.

[0064] Example 2

[0065] A traction water-cooled converter, based on embodiment 1, further includes the following inside the traction water-cooled converter housing 19:

[0066] The grounding detection module 14 can detect and shut down the traction water-cooled converter in time when grounding occurs, and the intermediate circuit voltage sensor 15 measures the intermediate circuit voltage value.

[0067] Through reasonable component layout, the size of the traction water-cooled converter has been reduced, achieving the design goals of lightweighting and miniaturization.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A traction water-cooled converter, characterized in that, include: Traction water-cooled converter housing (19), motor line maintenance cover (21), and inlet / outlet water connectors (22); The traction water-cooled converter housing (19) is equipped with a maintenance port for the power cables of the diesel generator and asynchronous motor installed on the vehicle side, as well as a motor cable maintenance cover (21) of the corresponding size. The inlet and outlet water connector (22) is located on the side of the traction water-cooled converter housing (19) and is connected to the water-cooling module inside the traction water-cooled converter housing (19); the vehicle coolant enters and exits the traction water-cooled converter through the inlet and outlet water connector (22) to cool the traction water-cooled converter. The interior of the traction water-cooled converter housing (19) includes: The diesel generator consists of an input copper busbar (1), a current sensor (2), an output copper busbar (9) of the converter, an output current sensor (8), a chopper current sensor (11), a chopper copper busbar (12), a chopper resistor (13), a surge capacitor (4), a rectifier IGBT module (3), a rectifier composite busbar (6), an inverter IGBT module (7), a chopper IGBT module (10), a support capacitor (5), a slow discharge resistor (16), and a control board (17). The diesel generator input copper busbar (1) is connected to the rectifier IGBT module (3), the rectifier IGBT module (3) is connected to the inverter IGBT module (7), and the inverter IGBT module (7) is connected to the converter output copper busbar (9), so that the three-phase AC power generated by the diesel generator is converted into DC power by the rectifier IGBT module (3), and then converted into AC power by the inverter IGBT module (7).

2. The traction water-cooled converter according to claim 1, characterized in that The side of the rectifier composite busbar (6) is a right-angled Z-shaped zigzag line, connecting the rectifier IGBT module (3), the support capacitor (5), the inverter IGBT module (7), and the chopper IGBT module (10) into a whole, including: The bottom of the Z-shaped structure has multiple ports that are connected to the rectifier IGBT module (3), the inverter IGBT module (7), and the chopper IGBT module (10), respectively; the lower space on the top of the Z-shaped structure has a supporting capacitor (5).

3. A traction water-cooled converter according to claim 2, characterised in that The surge capacitor (4) is set on each IGBT module to absorb the peak voltage of each IGBT module.

4. A traction water-cooled converter according to claim 1, characterized in that The control panel (17) is located on the upper layer of the diesel generator input copper busbar (1).

5. A traction water-cooled converter according to claim 1, characterized in that The water-cooled module is located below the input copper busbar (1) of the diesel generator.

6. A traction water-cooled converter according to claim 1, characterized in that The chopper resistor (13) is located below the supporting capacitor (5).

7. A traction water-cooled converter as claimed in claim 1, characterized in that The traction water-cooled converter housing (19) also includes: The grounding detection module (14) can detect and shut down the traction water-cooled converter in a timely manner when a grounding occurs. The intermediate circuit voltage sensor (15) measures the intermediate circuit voltage value.

8. A traction water-cooled converter according to claim 1, characterized in that Also includes: The traction water-cooled converter housing (19) is a cuboid and is equipped with a traction water-cooled converter top cover (20) of the corresponding size. A double-layer sealing strip is installed between the traction water-cooled converter top cover (20) and the traction water-cooled converter housing (19). The traction water-cooled converter top cover (20) is installed on the traction water-cooled converter housing (19) by bolts.

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