High-heat-dissipation rectification unit module and converter

Abstract

The utility model discloses a high-heat-dissipation rectification unit module and a converter. The high-heat-dissipation rectification unit module adopts two groups of three-phase bridge type rectification circuit modules, wherein the input ends of the two groups of three-phase bridge type rectification circuit modules are connected in parallel through an input copper bar assembly, and the output ends of the two groups of three-phase bridge type rectification circuit modules are respectively connected with an output copper bar assembly; the temperature sensor is arranged between the two groups of three-phase bridge rectifier circuit modules; the current detection module is arranged on the front side of the input copper bar assembly; the output current detection module is arranged on the rear side of the output copper bar assembly; the radiating fins are arranged below the radiator, and the fan is arranged perpendicular to the ventilation direction of the radiating fins. According to the utility model, the two groups of three-phase bridge rectifier circuit modules are adopted to improve the total power of the unit, reduce the total manufacturing cost of the unit, reduce the heat dissipation requirement in unit area, and cooperate with the air-cooled heat dissipation fins with strong heat dissipation capability to realize the high heat dissipation performance of the whole unit module, improve the environmental adaptability of the high heat dissipation rectifier unit module, and improve the service life of the unit module. The device is more suitable for severe working conditions of engineering machinery.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectifier device field especially relates to a high heat dissipation rectification unit module and converter. BACKGROUND

[0002] The rectification unit is one of the key components of the super-power electric transmission engineering machinery traction drive system. The super-power electric transmission engineering machinery traction drive system usually has two groups or even four groups of traction rectification units, which puts forward higher requirements on the power and performance of the rectification unit. In addition, the working conditions of engineering machinery are harsh, and the heat dissipation performance of the devices carried thereon is a severe test.

[0003] At present, the rectification unit usually adopts a three-phase bridge rectifier circuit, which has extremely high requirements on the power and performance of single devices, and the heat dissipation demand in unit area is extremely large, which is not conducive to the cost control of the whole system and the improvement of vehicle stability and reliability. In addition, most of the rectification units are not formed into modules, and the devices in the unit are distributed on different installation panels in the electric control cabinet body, and the functional areas are not concentrated. When assembling, all the elements of the rectification device need to be installed in the cabinet body, and the production cost is high. In addition, the whole module cannot be replaced quickly, which increases the complexity of debugging and maintenance, and affects the improvement of work efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a high heat dissipation, modularized and easy-to-maintain rectification unit module, and another object of the utility model is to provide a converter using the above rectification unit module.

[0005] Technical scheme: The high heat dissipation rectification unit module, comprising a radiator, heat dissipation fins, a three-phase bridge rectifier circuit module, an input copper bar assembly, an output copper bar assembly, a temperature sensor, an input current detection module and an output current detection module, the input ends of the two three-phase bridge rectifier circuit modules are connected in parallel through the input copper bar assembly, and the output ends are connected to the output copper bar assembly respectively; the temperature sensor is arranged between the two three-phase bridge rectifier circuit modules and used for monitoring the maximum temperature of the radiator; the current detection module is arranged on the front side of the input copper bar assembly and used for monitoring the total current of the high heat dissipation rectification unit module; the output current detection module is arranged on the rear side of the output copper bar assembly and used for monitoring the current output by each three-phase bridge rectifier circuit module respectively; the heat dissipation fins are arranged below the radiator, and the fan is arranged vertically to the ventilation direction of the heat dissipation fins.

[0006] Preferably, the edge of the radiator is provided with a support beam assembly with a handle.

[0007] Preferably, the high-heat-dissipation rectifier unit module further comprises an input copper bar support insulation plate and an output copper bar support insulation plate, which are installed on the support beam assembly and used for supporting the input copper bar assembly or the output copper bar assembly.

[0008] Preferably, the high-heat-dissipation rectifier unit module further comprises an upper mounting plate installed on the upper part of the heat sink, which is provided with a voltage detection module, a filter capacitor and a secondary line joint assembly, and the secondary line joint assembly is provided with a quick plug joint.

[0009] Preferably, the upper mounting plate is detachably installed on the heat sink through a split-type support.

[0010] Preferably, the support beam assembly is arranged on the heat sink through a sliding block.

[0011] Preferably, the filter capacitor is fixed to the upper mounting plate through a reinforcing support to strengthen the stability under harsh working conditions.

[0012] Preferably, the high-heat-dissipation rectifier unit module further comprises a plurality of wire bundling devices for bundling internal wire harnesses.

[0013] Preferably, the contact surface of the heat sink is provided with a heat-conducting silicone grease layer.

[0014] The converter comprises a cabinet body, a control unit, a plurality of inversion modules and the high-heat-dissipation rectifier unit module.

[0015] Advantages: compared with the prior art, the converter has the following advantages: 1. the converter adopts two groups of three-phase bridge rectifier circuit modules to improve the total power of the unit, and uses a low-cost device in a clever combination manner to reduce the total manufacturing cost of the unit; 2. the converter adopts two groups of three-phase bridge rectifier circuit modules to reduce the heat dissipation requirement in a unit area, cooperates with the air-cooled heat dissipation fins with high heat dissipation capacity, realizes high heat dissipation performance of the entire unit module, improves the environmental adaptability of the high-heat-dissipation rectifier unit module, and is more suitable for harsh working conditions of engineering machinery; 3. all the devices of the converter are directly or indirectly installed on the heat sink, the installation mode is stable, the converter can be assembled externally as an independent module, the assembly difficulty is reduced, and the operation efficiency is improved; 4. the secondary lines of the converter are connected externally through the quick plug joints on the secondary line joint assemblies, and the secondary wire harnesses do not need to be disassembled when the module is disassembled; the primary line connection points are located at the outermost side of the high-heat-dissipation rectifier unit module, and the upper part is not shielded, so that the module is convenient to disassemble; 5. the converter is provided with a temperature sensor, an input current detection module, an output current detection module and a voltage detection module, the self-checking capability of the high-heat-dissipation rectifier unit module is enhanced, and the stability of the entire electric drive system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure diagram of the high-heat-dissipation rectification unit module is described in the utility model.

[0017] Figure 2 An installation diagram of the heat dissipation fins is described in the utility model.

[0018] Figure 3 A perspective view of the high-heat-dissipation rectification unit module after removing the upper installation plate, the voltage detection module, the filter capacitor and the secondary line joint assembly is described in the utility model.

[0019] Figure 4 A diagram of the first group of three-phase bridge rectification circuit modules and the second group of three-phase bridge rectification circuit modules in the high-heat-dissipation rectification unit module is described in the utility model. DETAILED DESCRIPTION

[0020] The utility model is further described below in combination with the drawings.

[0021] The high-heat-dissipation rectification unit module described in the utility model comprises a radiator 1, the lower part of the radiator 1 has heat dissipation fins 2, the lower part of the radiator 1 is provided with continuous sealing material 3 around the heat dissipation fins 2 for sealing the module installation position. The ventilation direction of the fan is perpendicular to the heat dissipation fins.

[0022] Each piece of the heat dissipation fins 2 has a thickness of 1 mm, the piece spacing is 3 mm, and the fin height is 90 mm, so that the best heat dissipation effect can be obtained under the specified wind speed; the side of the radiator 1 is provided with a lifting ring screw installation hole, facilitating hoisting operation;

[0023] The high-heat-dissipation rectification unit module described in the utility model further comprises a rectification diode module 4, a filter resistor 5, a temperature sensor 6, an input current detection module 7, an output current detection module 8, an input copper bar assembly 9, a first output copper bar assembly 10, a second output copper bar assembly 11, a support beam assembly 12, a handle 13, an input copper bar support insulating plate 14 and an output copper bar support insulating plate 22.

[0024] The rectifier diode module 4, the filter resistor 5 and the temperature sensor 6 are closely mounted on the upper part of the heat sink 1, and the contact surface of the heat sink 1 needs to be coated with thermal conductive silicone grease to reduce the thermal resistance; the temperature sensor 6 is arranged between the mounting gaps of the rectifier diode module 4, and can monitor the highest temperature on the heat sink 1; the input current detection module 7 and the output current detection module 8 are bolted to the upper part of the heat sink 1; the support beam assembly 12 is composed of two parts, which are firmly installed on both sides of the upper part of the heat sink; the handle 13 is installed on the support beam assembly 12, and the handle 13 connects the two parts of the support beam assembly 12 to enhance the overall rigidity of the high-heat-dissipation rectifier unit module; the input copper bar support insulation plate 14 and the output copper bar support insulation plate 22 are installed on the support beam assembly 12; the input copper bar support insulation plate 14 is used to support the input copper bar assembly 9; the output copper bar support insulation plate 22 is used to support the first output copper bar assembly 10 and the second output copper bar assembly 11.

[0025] The rectifier diode module 4 has six in total; three of the rectifier diode modules 4 form a first group of three-phase bridge rectifier circuit modules 100, and the remaining three rectifier diode modules 4 form a second group of three-phase bridge rectifier circuit modules 200; the input copper bar assembly 9 includes an input U-phase copper bar 91, an input V-phase copper bar 92 and an input W-phase copper bar 93; the first output copper bar assembly 10 includes a first DC negative copper bar 101 and a first DC positive copper bar 102; the second output copper bar assembly 11 includes a second DC positive copper bar 111 and a second DC negative copper bar 112; the input ends of the first group of three-phase bridge rectifier circuit modules 100 and the input ends of the second group of three-phase bridge rectifier circuit modules 200 are connected in parallel through the input copper bar assembly 9; current is input through the input copper bar assembly 9, rectified by the first group of three-phase bridge rectifier circuit modules 100, and then output through the first output copper bar assembly 10; at the same time, current is also input through the input copper bar assembly 9, rectified by the second group of three-phase bridge rectifier circuit modules 200, and then output through the second output copper bar assembly 11; the input current detection module 7 can monitor the total current input into the high-heat-dissipation rectifier unit module, and the output current detection module 8 can monitor the output current on the first output copper bar assembly 10 and the output current on the second output copper bar assembly 11 respectively.

[0026] The utility model discloses high heat dissipation rectifying unit module, contain upper layer mounting panel 15, upper layer mounting panel 15 install on the radiator upper portion, voltage detection module 16, filter capacitor 17, secondary line joint assembly 18 install on the upper layer mounting panel 15 top, be provided with quick plug joint on secondary line joint assembly 18. The upper layer mounting panel below is provided with split type support 151, more convenient for the dismounting of upper layer mounting panel 15, the filter capacitor can be further reinforced through the reinforcement support 20 to strengthen the stability under the adverse working condition, the high heat dissipation rectifying unit module is provided with a plurality of lacing device 21 inside, is used for the bundling of internal wiring harness, the wear -resisting sliding block 19 is provided with in support beam assembly side, and convenient for the dismounting of high heat dissipation rectifying unit module, voltage detection module 16 can monitor the input voltage and output voltage of high heat dissipation rectifying unit module, filter capacitor 17 and filter resistance 5 are common to constitute filter circuit.

[0027] The utility model discloses rectifier, including cabinet, control unit, a plurality of inverter module and above high heat dissipation rectifying unit module.

[0028] The utility model discloses high heat dissipation rectifying unit module inside uses two groups three -phase bridge rectifier circuit module to improve unit total power, uses the low -cost device ingenious combination's mode to reduce unit's total manufacturing cost, simultaneously, using two groups three -phase bridge rectifier circuit module, can reduce the heat dissipation demand in unit area, cooperates the air -cooled fin radiator of strong heat dissipation capacity, can realize the high heat dissipation performance of whole unit module, promotes the environmental adaptability of high heat dissipation rectifying unit module, makes high heat dissipation rectifying unit module more adapt to the use working condition of engineering machinery adverse condition,

[0029] Further, all the devices on the high heat dissipation rectifying unit module are directly or indirectly installed on the radiator, and the installation mode is stable, which can be assembled externally as an independent module, can reduce the assembly difficulty, and improve the work efficiency; the secondary lines on the high heat dissipation rectifying unit module are connected externally through the quick plug joints, and the secondary wiring harness does not need to be disassembled when the module is disassembled; the primary line connection points of the high heat dissipation rectifying unit module are located on the outermost side of the high heat dissipation rectifying unit module, and there is no obstruction above, which is convenient for disassembly;

[0030] More beneficially, the high heat dissipation rectifying unit module is provided with a temperature sensor, an input and output current detection module, and a voltage detection module, which enhances the self-checking capability of the high heat dissipation rectifying unit module, and improves the stability of the entire electric drive system.

Claims

1. A high-heat-dissipation rectifier unit module, characterized in that, It includes a heat sink (1), heat dissipation fins (2), a three-phase bridge rectifier circuit module, an input copper busbar assembly (9), an output copper busbar assembly, a temperature sensor (6), an input current detection module (7), and an output current detection module; the input terminals of the two sets of three-phase bridge rectifier circuit modules are connected in parallel through the input copper busbar assembly (9), and the output terminals are respectively connected to the output copper busbar assembly; the temperature sensor is located between the two sets of three-phase bridge rectifier circuit modules to monitor the highest temperature of the heat sink; the current detection module (7) is located in front of the input copper busbar assembly (9) to monitor the total current of the high-heat-dissipation rectifier unit module; The output current detection module is located on the rear side of the output copper busbar assembly and is used to monitor the output current of each group of three-phase bridge rectifier circuit modules; the heat dissipation fins are located below the heat sink, and the fan is set perpendicular to the ventilation direction of the heat dissipation fins.

2. The high heat dissipation rectifier unit module according to claim 1, characterized in that, The radiator (1) has a support beam assembly (12) with a handle (13) on its edge.

3. The high heat dissipation rectifier unit module according to claim 2, characterized in that, It also includes an input copper busbar support insulation plate (14) and an output copper busbar support insulation plate (22), which are mounted on the support beam assembly to support the input copper busbar assembly or the output copper busbar assembly.

4. The high heat dissipation rectifier unit module according to claim 3, characterized in that, It also includes an upper mounting plate (15) installed on the top of the heat sink. The upper mounting plate (15) is provided with a voltage detection module (16), a filter capacitor (17), and a secondary line connector assembly (18). The secondary line connector assembly (18) is provided with a quick-connect connector.

5. The high heat dissipation rectifier unit module according to claim 4, characterized in that, The upper mounting plate (15) is detachably mounted on the radiator via a split bracket (151).

6. The high heat dissipation rectifier unit module according to claim 2, characterized in that, The support beam assembly (12) is mounted on the radiator (1) via a slider (19).

7. The high heat dissipation rectifier unit module according to claim 4, characterized in that, The filter capacitor (17) is fixed to the upper mounting plate (15) by the reinforcing bracket (20).

8. The high heat dissipation rectifier unit module according to claim 4, characterized in that, It also includes several wire-tying devices (21).

9. The high heat dissipation rectifier unit module according to claim 1, characterized in that, The contact surface of the heat sink (1) is provided with a thermally conductive silicone grease layer.

10. A converter, characterized in that, It includes a cabinet, a control unit, multiple inverter modules, and a high heat dissipation rectifier unit module as described in any one of claims 1-9.

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