CN205059301U - High -pressure automatically controlled cabinet and mine car of mine car - Google Patents

Abstract

The utility model discloses a high-voltage electric control cabinet assembly of a mining car and a mining car. The high-voltage electric control cabinet of the mining car includes: a plurality of motor controllers, and the AC output ends of each motor controller are respectively connected to the corresponding The motors are connected to drive the corresponding motors; at least one fan inverter, and each fan inverter is connected to the corresponding cooling fan to drive the corresponding cooling fan for heat dissipation; DC/DC converter, the DC/DC converter is used for Output low-voltage direct current to supply power to the low-voltage system of the mine car; and a high-voltage distribution box, which is connected to the power battery, and the high-voltage distribution box distributes the high-voltage direct current output by the power battery and outputs it through the main DC bus to provide Every motor controller, every wind turbine inverter and DC/DC converter. The high-voltage electric control cabinet assembly of the mine car according to the utility model can be applied to a mine car using a power battery as the power of the whole vehicle.

Description

High-voltage electric control cabinet and mine car for mine car

technical field

The utility model relates to the technical field of vehicles, in particular to a high-voltage electric control cabinet assembly of a mine car and the mine car.

Background technique

At present, mining vehicles powered by internal combustion engines have disadvantages such as high energy consumption, high noise and serious environmental pollution.

For this reason, proposed in the related art the mine car that uses power battery as vehicle power, can solve the problems referred to above. In the mine car, a high-voltage electric control cabinet is required to supply power for the drive and control of the whole car. In a mine car powered by an internal combustion engine, the electric energy comes from a generator driven by the internal combustion engine, which is quite different from the electric energy provided by the power battery in a mine car powered by a power battery, such as voltage level and voltage fluctuation range etc. are difficult to be the same. Therefore, the high-voltage electric control cabinet in the mine car powered by the internal combustion engine cannot be applied to the mine car powered by the power battery.

Therefore, a high-voltage electric control cabinet suitable for a mine car powered by a power battery is yet to be proposed.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, an object of the utility model is to propose a high-voltage electric control cabinet for a mine car, which can be applied to a mine car with a power battery as the power of the whole vehicle, so as to bring into play the transportation cost of the mine car with the power battery as the power of the whole vehicle. Low noise, low noise and little environmental pollution.

The second purpose of the utility model is to propose a mine car.

According to the first aspect embodiment of the utility model, the high-voltage electric control cabinet of the mine car includes: a plurality of motor controllers, and the AC output terminals of each of the motor controllers are respectively connected to the corresponding motors to drive the corresponding motors; at least A fan inverter, each of the fan inverters is connected to a corresponding cooling fan to drive the corresponding cooling fan for heat dissipation; a DC/DC converter, the DC/DC converter is used to output low-voltage direct current to provide The low-voltage system of the mine car supplies power; and a high-voltage distribution box, the high-voltage distribution box is connected to the power battery, and the high-voltage distribution box outputs the high-voltage direct current output by the power battery through the total DC bus to provide For each of the motor controllers, each of the wind turbine inverters and the DC/DC converters.

According to the high-voltage electric control cabinet assembly of the mining car in the embodiment of the present invention, the high-voltage distribution box distributes the high-voltage direct current output by the power battery and then outputs it through the total direct current bus to provide each motor controller and each fan inverter. Inverter and DC/DC converter, so that each motor controller drives the corresponding motor, and each fan inverter drives the corresponding cooling fan for heat dissipation, and the DC/DC converter supplies the low voltage of the mine car The system is powered. Thus, it is possible to control the mine car using the power battery as the power of the whole vehicle, and promote the popularization of the mine car using the power battery as the power of the whole vehicle. Therefore, the advantages of low transportation cost, low noise and little environmental pollution of the mine car powered by the power battery can be fully utilized.

The mine car according to the embodiment of the second aspect of the utility model includes the high-voltage electric control cabinet assembly of the mine car according to the embodiment of the first aspect of the utility model.

According to the mining car of the present utility model, the high-voltage distribution box distributes the high-voltage direct current output by the power battery and outputs it through the total direct current bus to provide each motor controller, each fan inverter and DC/DC converter, Make each motor controller drive the corresponding motor, and make each fan inverter drive the corresponding heat dissipation fan for heat dissipation, and make the DC/DC converter supply power to the low voltage system of the mine car. Thus, the power battery can be used as the power of the whole vehicle, and the electrical equipment of the whole vehicle can be controlled, which promotes the popularization of the mine car with the power battery as the power of the whole vehicle. Therefore, the advantages of low transportation cost, low noise and little environmental pollution of the mine car powered by the power battery can be fully utilized.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Fig. 1 is the structural block diagram of the high-voltage electric control cabinet assembly of the mine car according to the utility model;

Fig. 2 is the specific structural representation of the high-voltage electric control cabinet assembly of the mine car according to the utility model;

Fig. 3 is the circuit topological diagram of the left wheel side motor controller and the right wheel side motor controller in the high voltage electric control cabinet assembly of the mine car according to the utility model;

Fig. 4 is a schematic diagram of the electrical connection of the fan inverter and the corresponding cooling fan in the high-voltage electric control cabinet assembly of the mine car according to the utility model.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

Describe the high-voltage electric control cabinet assembly and the mine car of the mine car of the present utility model below in conjunction with accompanying drawing.

Fig. 1 is a structural block diagram of a high-voltage electric control cabinet assembly of a mine car according to the utility model.

It should be noted that, in the utility model, the energy source of the mine car is a power battery. In order to realize the scheme of using the power battery as the power of the mine car, the high-voltage electric control cabinet assembly of the mine car of the utility model is correspondingly proposed.

As shown in FIG. 1 , the high-voltage electric control cabinet assembly of the mine car of the present invention includes: a plurality of motor controllers 10 , at least one fan inverter 20 , a DC/DC converter 30 and a high-voltage distribution box 40 .

Among them, the high-voltage distribution box 40 is connected to the power battery, and the high-voltage distribution box 40 distributes the high-voltage direct current output by the power battery and then outputs it through the total DC bus to provide each motor controller 10 and each fan inverter 20 and DC/DC converter 30.

In the utility model, the power battery can be connected with the high-voltage distribution box 40 through six wire harnesses of 120 mm ² , and the rated input current of the power battery can be 2800A. The total DC bus can be made of copper bars with a width of 130mm and a thickness of 10mm, and the output DC voltage through the total DC bus can be 750V. The high-voltage power distribution box 40 distributes the power according to the power requirements of the high-voltage components, which can ensure the safe operation of the high-voltage components of the vehicle.

The AC output end of each motor controller 10 is respectively connected to the corresponding motor to drive the corresponding motor.

In the present invention, the plurality of motor controllers 10 may include a left wheel side motor controller and a right wheel side motor controller. As shown in Figure 2, the left wheel side motor controller and the right wheel side motor controller can be connected to the main DC bus through the first copper bar to obtain power from the main DC bus, and the left wheel side motor controller is connected to the left wheel side motor To drive the left wheel side motor, the right wheel side motor controller is connected with the right wheel side motor to drive the right wheel side motor. Wherein, the width of the first copper row may be 100 mm, and the thickness may be 5 mm. The left wheel side motor controller and the right wheel side motor controller can output to the left wheel side motor and the right wheel side motor through three-phase lines with a specification of 3×120mm ² (three wires of 120mm ² in parallel) after inverting the DC power. Side motor, to drive left wheel side motor and right wheel side motor, thereby drives mine car.

In the utility model, the design power of the left wheel motor controller and the right wheel motor controller can be 1200KW, the rated current output to the left wheel motor and the right wheel motor can be 1200A, and the maximum current can be 2400A/30s. The rated power of the left wheel motor and the right wheel motor can be 800KW, the rated torque can be 13000N·m, and the maximum torque can be 24000N·m.

In the present invention, the motor controller at the left wheel side and the motor controller at the right wheel side may both include two power modules connected in parallel. In the present invention, the power module can be an intelligent power module. Among them, the intelligent power module is a power switching device, which has the advantages of high input impedance, high switching frequency and low driving power. As shown in Figure 3, IGBTs (Insulated Gate Bipolar Transistor) with preset rated voltage and current can be used in intelligent power modules. After the intelligent power modules are connected in parallel, the rated voltage and current of each phase in the three-phase circuit Twice the preset rated voltage and current. In addition, when the vehicle is running at low speed and high torque, the switching frequency of the IGBT can be controlled to 1KHz, and when the vehicle is running at high speed and low torque, the switching frequency of the IGBT can be controlled to be 5KHz. In the utility model, since the voltage of the power battery is 750V, which is relatively low, and the rated voltage of electronic devices such as IGBT is also low, the manufacturing cost of the high-voltage electric control cabinet assembly can be greatly reduced.

In the present invention, the plurality of motor controllers 10 may also include a lift motor controller and a braking and steering motor controller. As shown in Figure 2, the lift motor controller and the brake steering motor controller can be connected to the main DC bus through the second copper bar to obtain power from the main DC bus, and the lift motor controller is connected to the lift motor The lifting motor is used to drive the first hydraulic pump to unload the cargo, and the brake steering motor controller is connected to the brake steering motor to drive the brake steering motor to drive the second hydraulic pump and the third hydraulic pump to perform braking and steering correspondingly. work, wherein the ampacity of the second copper bar is less than the ampacity of the first copper bar. In the present invention, the width of the second copper bar may be 20 mm, and the thickness may be 3 mm. Wherein, the brake steering motor is the same motor that performs braking work and steering work in the mine car, and is driven by the brake steering motor controller. The lift motor controller and brake steering motor controller can output to the lift motor and brake steering motor respectively through three ^- phase wires with a specification of 50mm2 after inverting the direct current, so as to drive the lift motor to drive the first The hydraulic pump lifts the bucket to realize cargo self-unloading, and drives the brake steering motor to drive the second hydraulic pump to perform braking work, or drives the brake steering motor to drive the third hydraulic pump to perform steering work.

In the utility model, the design power of the lift motor controller and the brake steering motor controller can be 150KW, the rated current output to the lift motor and the brake steering motor can be 240A, and the maximum current can be 460A/30s. The rated rotational speed of the lifting motor and the brake steering motor may be 1500rpm, and the rated torque may be 1000N·m.

In the utility model, in the power modules in the lift motor controller and the brake steering motor controller, the rated voltage and current of the power modules of the left wheel side motor controller and the right wheel side motor controller can be used low IGBT. It should be understood that the working conditions of the lifting motor and the brake steering motor used to drive the hydraulic pump are generally relatively stable, and basically run with rated parameters after startup.

Each fan inverter 20 is respectively connected with a corresponding cooling fan to drive the corresponding cooling fan to perform cooling work.

In the utility model, since the load current of the high-voltage electric control cabinet assembly is large, at least one heat dissipation fan is required to dissipate heat for one motor controller. In the present invention, at least one fan inverter 20 may be three. As shown in Fig. 2 and Fig. 4, the three wind turbine inverters are all connected to the general DC bus through the first DC bus to obtain power from the general DC bus. Wherein, the first fan inverter can drive the first heat dissipation fan to dissipate heat for the left wheel side motor controller, the second fan inverter can drive the second heat dissipation fan to dissipate heat for the right wheel side motor controller, and the third fan The inverter can drive the third cooling fan to dissipate heat from the cabinet environment of the lifting motor controller, the brake steering motor controller and the high-voltage electric control cabinet. In the present utility model, the first cooling fan can be 3, and its single rated power can be 180W, the second cooling fan can be 3, and its single rated power can be 180W, and the third cooling fan can be 4, and its single rated power can be 80W. Specifically, the lift motor controller and the brake steering motor controller can be cooled by one third cooling fan respectively, and the cabinet environment of the high-voltage electric control cabinet can be cooled by two third cooling fans. Wherein, the first DC bus bar may be a wire harness of 3 mm ² . The three fan inverters can convert DC power into 220V single-phase AC power and output it to the corresponding cooling fans.

In the utility model, the design power of the three fan inverters can be 3.3KVA. Wherein, the rated power of the first wind turbine inverter and the second wind turbine inverter may both be 540W, and the rated power of the third wind turbine inverter may be 320W. In the utility model, each heat dissipation fan has an independent heat dissipation air duct. In addition, the three fan inverters can adjust the speeds of the corresponding cooling fans according to the temperature of the motor controllers and the cabinet body of the high-voltage electric control cabinet. When the temperature of the motor controller is low, the rotating speed of the cooling fan can be reduced, thereby saving energy.

The DC/DC converter 30 is used to output low-voltage direct current to supply power to the low-voltage system of the mine car.

In the utility model, the low-voltage direct current can be 28V, and the rated power of the low-voltage system can be 3.5KW. At the same time, the DC/DC converter 30 also has a CAN (Controller Area Network, Controller Area Network) bus communication function, an automatic protection function, and an automatic recovery function.

In addition, as shown in FIG. 2 , the main DC bus can also be connected to the auxiliary high-voltage load in the mine car through the first DC bus to supply power to the auxiliary high-voltage load. Among them, the auxiliary high-voltage load is other loads using high-voltage power supply in the mining car except the motor on the left wheel, the motor on the right wheel and the cooling fan. It should be understood that the power of the auxiliary high-voltage loads is relatively small. For example, the auxiliary high-voltage load may include a 5.5KW cab air-conditioning system, multiple 1KW motor cooling oil pumps, and a 20KW power battery pack air-conditioning system.

It should be noted that, based on the design parameters and rated parameters described above, the insulation withstand voltage requirements of the high-voltage electric control cabinet assembly of the utility model should meet 2700VAC/1min/50Hz, and the storage temperature can be -40℃～85℃ , The working environment temperature can be -40℃～65℃.

According to the high-voltage electric control cabinet assembly of the mining car of the present invention, the high-voltage distribution box distributes the high-voltage direct current output by the power battery and then outputs it through the total direct current bus to provide it to each motor controller and each fan inverter And DC/DC converter, so that each motor controller drives the corresponding motor, and each fan inverter drives the corresponding cooling fan for heat dissipation, and the DC/DC converter supplies power to the low-voltage system of the mine car . Thus, it is possible to control the mine car using the power battery as the power of the whole vehicle, and promote the popularization of the mine car using the power battery as the power of the whole vehicle. Therefore, the advantages of low transportation cost, low noise and low environmental pollution of the mine car powered by the power battery can be fully utilized.

Corresponding to the high-voltage electric control cabinet assembly of the mine car in the above-mentioned embodiments of the utility model, the utility model also proposes a mine car.

The mine car according to the utility model includes the high-voltage electric control cabinet of the mine car according to the embodiment of the first aspect of the utility model. For specific implementation manners, reference may be made to the foregoing embodiments, and details are not repeated here.

According to the mining car of the present utility model, the high-voltage distribution box distributes the high-voltage direct current output by the power battery and outputs it through the total direct current bus to provide each motor controller, each fan inverter and DC/DC converter, Make each motor controller drive the corresponding motor, and make each fan inverter drive the corresponding heat dissipation fan for heat dissipation, and make the DC/DC converter supply power to the low voltage system of the mine car. Thus, the power battery can be used as the power of the whole vehicle, and the electrical equipment of the whole vehicle can be controlled, which promotes the popularization of the mine car with the power battery as the power of the whole vehicle. Therefore, the advantages of low transportation cost, low noise and little environmental pollution of the mine car powered by the power battery can be fully utilized.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (8)

1. a high-pressure electric control cabinet assembly for mine car, is characterized in that, comprising:

Multiple electric machine controller, the ac output end of each described electric machine controller is connected to drive corresponding motor with corresponding motor respectively;

At least one blower fan inverter, each described blower fan inverter is connected with corresponding cooling fan to drive corresponding cooling fan to carry out heat radiation work respectively;

DC/DC changer, described DC/DC changer is for exporting low-voltage DC to power to the low-pressure system of mine car; And

High-tension distribution box, described high-tension distribution box is connected with electrokinetic cell, described high-tension distribution box is exported by total DC bus after distributing the high voltage direct current that described electrokinetic cell exports, to be supplied to each described electric machine controller, each described blower fan inverter and described DC/DC changer.

2. the high-pressure electric control cabinet assembly of mine car as claimed in claim 1, it is characterized in that, described multiple electric machine controller comprises revolver limit electric machine controller and right wheel motor controller, described revolver limit electric machine controller and described right wheel motor controller to be connected with from power taking on described total DC bus respectively by the first copper bar with described total DC bus, and described revolver limit electric machine controller is connected with left wheel motor to drive described left wheel motor, described right wheel motor controller is connected with right wheel motor to drive described right wheel motor.

3. the high-pressure electric control cabinet assembly of mine car as claimed in claim 2, it is characterized in that, described multiple electric machine controller also comprises lifting motor controller and skid steer electric machine controller, described lifting motor controller and skid steer electric machine controller to be connected with from power taking on described total DC bus respectively by the second copper bar with described total DC bus, and described lifting motor controller and lifting motor are connected and are connected with skid steer motor to drive described skid steer driven by motor second Hydraulic Pump and the 3rd Hydraulic Pump is corresponding performs braking operation and turn to work to drive described lifting motor to drive the first Hydraulic Pump to carry out skid steer electric machine controller described in cargo dumping.

4. the high-pressure electric control cabinet assembly of mine car as claimed in claim 3, it is characterized in that, the current-carrying capacity of described second copper bar is less than the current-carrying capacity of described first copper bar.

5. the high-pressure electric control cabinet assembly of mine car as claimed in claim 3, it is characterized in that, at least one blower fan inverter described is three, three blower fan inverters to be all connected with from power taking on described total DC bus by the first DC bus with described total DC bus, wherein, first blower fan Driven by inverter first cooling fan is to dispel the heat to described revolver limit electric machine controller, second blower fan Driven by inverter second cooling fan is to dispel the heat to described right wheel motor controller, 3rd blower fan Driven by inverter the 3rd cooling fan is with to described lifting motor controller, the cabinet environment of described skid steer electric machine controller and high-pressure electric control cabinet dispels the heat.

6. the high-pressure electric control cabinet assembly of the mine car according to any one of claim 1-5, is characterized in that, described total DC bus is also connected with to described additional high pressure load supplying by the first DC bus with the additional high pressure load in described mine car.

7. the high-pressure electric control cabinet assembly of mine car as claimed in claim 2, it is characterized in that, described revolver limit electric machine controller and right wheel motor controller include two power models in parallel.

8. a mine car, is characterized in that, comprises the high-pressure electric control cabinet assembly of the mine car according to any one of claim 1-7.