阅读说明：本技术 一种单管igbt并联电机控制系统 (Single-tube IGBT parallel motor control system ) 是由 潘永健 张�杰 王旭峰 赵艳丽 于 2020-07-28 设计创作，主要内容包括：本发明公开一种单管IGBT并联电机控制系统,涉及IGBT领域,包括IGBT组件、控制驱动一体化电路板、叠层母排、电容、三相铜排注塑件和IGBT用散热器,所述IGBT组件每一相的结构和对应连接关系都相同,其中A相由并联的第一A相上桥臂IGBT-和第二A相上桥臂IGBT-连接并联的第一A相下桥臂IGBT-和第二A相下桥臂IGBT-构成,且IGBT组件与叠层母排和电容的输出铜排-连接,采用750V/340A多管IGBT并联技术,同时采用了不同方式的直连互焊工艺,相比市面上的单管方案可靠性和一致性更好,该设计具有结构紧凑、集成度高、重量轻、平台扩展灵活等技术特点,同时设计上省去了传统的螺栓连接和线束连接,装配更加简便,适合自动化批量制造,也为更高自动化程度装配提供了工艺基础。(The invention discloses a single-tube IGBT parallel motor control system, which relates to the field of IGBTs and comprises an IGBT assembly, a control and drive integrated circuit board, a laminated busbar, a capacitor, a three-phase copper bar injection molding part and a radiator for the IGBT, wherein the structure and the corresponding connection relation of each phase of the IGBT assembly are the same, an A phase is formed by connecting a first A phase upper bridge arm IGBT-and a second A phase upper bridge arm IGBT-which are connected in parallel with each other and a first A phase lower bridge arm IGBT-and a second A phase lower bridge arm IGBT-which are connected in parallel with each other, the IGBT assembly is connected with an output copper bar of the laminated busbar and the capacitor, a 750V/340A multi-tube IGBT parallel technology is adopted, and a direct mutual welding process in different modes is adopted, compared with a single-tube scheme on the market, the single-tube IGBT control system has the technical characteristics of compact structure, high integration level, light weight, flexible platform expansion and the like, the traditional bolt connection, the assembly is simpler and more convenient, is suitable for automatic batch manufacturing, and also provides a process basis for assembly with higher automation degree.)

1. A single-tube IGBT parallel motor control system is characterized by comprising an IGBT assembly (1), a control and drive integrated circuit board (2), a laminated busbar (3), a capacitor (4), a three-phase copper bar injection molding piece (6) and a radiator (7) for the IGBT, wherein the structure and the corresponding connection relation of each phase of the IGBT assembly (1) are the same, an A phase is formed by connecting a first A-phase upper bridge arm IGBT (1-1) and a second A-phase upper bridge arm IGBT (1-2) which are connected in parallel with a first A-phase lower bridge arm IGBT (1-3) and a second A-phase lower bridge arm IGBT (1-4) which are connected in parallel, and the IGBT assembly (1) is connected with an output copper bar (4-2) of the laminated busbar (3) and the capacitor (4);

a capacitor mounting groove (7-3) is arranged on the right side of the radiator (7) for the IGBT, the capacitor (4) is fixedly arranged in the capacitor mounting groove (7-3), the three-phase copper bar injection molding piece (6) is fixedly connected to the left side of the radiator (7) for the IGBT, the laminated busbar (3) comprises a negative electrode busbar (3-1) and a three-phase output copper bar (3-2), a bus bar welding terminal (3-3) is also arranged on the negative electrode bus bar (3-1), a shielding cover (5) for a sensor is arranged below the three-phase output copper bar (3-2), and the three-phase output copper bar (3-2) and the three-phase copper bar injection molding piece (6) are integrally molded, and the control and drive integrated circuit board (2) is fixedly connected to the shell of the capacitor (4) and the three-phase copper bar injection molding part (6) and covers the laminated busbar (3).

2. The single-tube IGBT parallel motor control system according to claim 1, characterized in that: an upper bridge IGBT gate signal terminal (101) and a lower bridge IGBT gate signal terminal (104) of the IGBT component (1) are directly welded with the control drive integrated circuit board (2), an upper bridge IGBT collector electrode (102) of the IGBT component (1) is in laser welding with the positive electrode of the capacitance output copper bar (4-2), an upper bridge IGBT emitter electrode (103) and a lower bridge IGBT collector electrode (105) of the IGBT component (1) are in laser welding together and are then connected with the three-phase output copper bar (3-2) through laser welding to serve as a three-phase output end of the control system, a lower bridge IGBT emitter electrode terminal (106) of the IGBT component (1) is in laser welding with a negative electrode busbar (3-1), and a busbar welding terminal (3-3) on the negative busbar (3-1) is in laser welding with the negative electrode of the capacitance output copper bar (4-2).

3. The single-tube IGBT parallel motor control system according to claim 1, characterized in that: the IGBT assembly (1) is directly welded on the IGBT welding boss (7-1) on the IGBT radiator (7) through a vacuum welding process.

4. The single-tube IGBT parallel motor control system according to claim 1, characterized in that: the negative electrode busbar (3-1) and the three-phase output copper bar (3-2) form a laminated busbar (3) by adopting a laminated busbar process.

5. The single-tube IGBT parallel motor control system according to claim 1, characterized in that: and a high-voltage direct-current input terminal (4-1) is arranged on the outer side of the capacitor (4).

6. The single-tube IGBT parallel motor control system according to claim 1, characterized in that: the radiator (7) for the IGBT is a water-cooling radiator, two ends of the radiator are respectively provided with a radiator cooling water pipe (7-2), and a radiator fin (8) is further arranged in the radiator (7) for the IGBT.

7. The single-tube IGBT parallel motor control system according to claim 1, characterized in that: the control and drive integrated circuit board is characterized in that a current sensor mounting groove (2-1) is formed in the control and drive integrated circuit board (2), a sensor is mounted in the current sensor mounting groove (2-1), and after the control and drive integrated circuit board (2) is mounted in place, the sensor is just right above the three-phase output copper bar (3-2) and is located in the center of a shielding case (5) for the sensor.

8. The single-tube IGBT parallel motor control system according to claim 1, characterized in that: each bridge arm of each phase of the IGBT component (1) can also be formed by connecting 3 or 4 IGBT tubes in parallel.

Technical Field

The invention relates to the field of Insulated Gate Bipolar Transistors (IGBT), in particular to a control system of a single-tube IGBT parallel motor.

Background

The traditional parallel motor control system generally adopts a single-tube scheme, has poor reliability, generally large volume and loose interior in structure, generally adopts the modes of bolt connection, wire harness connection and the like, and heat-conducting silicone grease needs to be filled between components, so that the system has large volume and weight, generally large thermal resistance and poor reliability.

Moreover, the components are generally small in size, are assembled one by one, need manual operation no matter in connection of wire harnesses or fixation of bolts, are low in production efficiency and are not suitable for automatic batch manufacturing.

Disclosure of Invention

The invention aims to provide a single-tube IGBT parallel motor control system, which adopts a 750V/340A multi-tube IGBT parallel technology and adopts direct mutual welding processes in different modes, has better reliability and consistency compared with single-tube schemes on the market, has the technical characteristics of compact structure, high integration level, light weight, flexible platform expansion and the like, saves the traditional bolt connection and wire harness connection in design, is simpler and more convenient to assemble, is suitable for automatic batch manufacturing, and provides a process foundation for assembling with higher automation degree.

A single-tube IGBT parallel motor control system comprises an IGBT assembly, a control and drive integrated circuit board, a laminated busbar, a capacitor, a three-phase copper bar injection molding and a radiator for the IGBT, wherein the structure and the corresponding connection relation of each phase of the IGBT assembly are the same, an A phase is formed by connecting a first A-phase upper bridge arm IGBT and a second A-phase upper bridge arm IGBT which are connected in parallel with each other with a first A-phase lower bridge arm IGBT and a second A-phase lower bridge arm IGBT which are connected in parallel with each other, and the IGBT assembly is connected with the laminated busbar and an output copper bar of the capacitor;

the right side of radiator for the IGBT is equipped with the electric capacity mounting groove, electric capacity fixed mounting is in the electric capacity mounting groove, three-phase copper bar injection molding fixed connection is in the left side of radiator for the IGBT, the stromatolite is female to be arranged and is included female the arranging and the three-phase output copper bar of negative pole, female arranging of negative pole is gone up and is still equipped with female welding terminal of arranging, three-phase output copper bar below is equipped with the shield cover for the sensor, and three-phase output copper bar and three-phase copper bar injection molding integrated into one piece, control drive integration circuit board fixed connection is on the shell and the three-phase.

Preferably, the upper bridge IGBT gate signal terminal and the lower bridge IGBT gate signal terminal of IGBT subassembly, with control drive integration circuit board lug weld, the upper bridge IGBT collecting electrode of IGBT subassembly passes through laser welding with the positive pole of electric capacity output copper bar, the upper bridge IGBT projecting pole and the lower bridge IGBT collecting electrode laser welding of IGBT subassembly are in the same place, pass through laser welding with three-phase output copper bar again and be connected, as control system three-phase output, the female welding of arranging of lower bridge IGBT projecting pole terminal and negative pole of IGBT subassembly, female welding terminal laser welding of arranging on the female row of negative pole is on the negative pole of electric capacity output copper bar.

Preferably, the IGBT module is directly welded to the IGBT welding boss on the IGBT heat sink by a vacuum welding process.

Preferably, the negative busbar and the three-phase output copper busbar form a laminated busbar by adopting a laminated busbar process.

Preferably, a high-voltage direct current input terminal is arranged outside the capacitor.

Preferably, the radiator for the IGBT is a water-cooling radiator, two ends of the radiator are respectively provided with a radiator cooling water pipe, and a radiator fin is further arranged in the radiator for the IGBT.

Preferably, the control and drive integrated circuit board is provided with a current sensor mounting groove, a sensor is mounted in the current sensor mounting groove, and after the control and drive integrated circuit board is mounted in place, the sensor is just right above the three-phase output copper bar and is located in the center of the shielding case for the sensor.

Preferably, each bridge arm of each phase of the IGBT assembly can also be composed of 3 or 4 IGBT tubes connected in parallel.

The invention has the advantages that: simple structure adopts 750V 340A multitube IGBT parallel technology, has adopted the direct mutual welding technology of different modes simultaneously, compares single tube scheme reliability and uniformity on the market better, and this design has technical characteristics such as compact structure, the integrated level is high, light in weight, platform extension flexibility, has saved traditional bolted connection and pencil connection in the design simultaneously, and the assembly is more simple and convenient, is fit for automatic batch manufacturing, also provides the technology basis for the assembly of higher degree of automation.

Drawings

FIG. 1 is an exploded view of the front side view of the device of the present invention;

FIG. 2 is an exploded view of the rear view of the device of the present invention;

FIG. 3 is a schematic view of the assembled internal structure of the apparatus of the present invention;

wherein, 1, an IGBT tube, 1-1, a first A phase upper bridge arm IGBT, 1-2, a second A phase upper bridge arm IGBT, 1-3, a first A phase lower bridge arm IGBT, 1-4, a second A phase lower bridge arm IGBT, 2, a control drive integrated circuit board, 2-1, a current sensor installation groove, 3, a laminated bus bar, 3-1, a negative bus bar, 3-2, a three-phase output copper bar, 3-3, a welding bus bar terminal, 4, a capacitor, 4-1, a high-voltage direct current input terminal, 4-2, a capacitor output copper bar, 5, a shielding cover for a sensor, 6, a three-phase copper bar injection molding piece, 7, a radiator for the IGBT, 7-1, a lug boss for welding the IGBT, 7-2, a radiator cooling water tube, 7-3, a capacitor installation groove, 8, a radiator fin, 101, an upper bridge IGBT signal terminal, 102. upper bridge IGBT collector terminal, 103, upper bridge IGBT emitter terminal, 104, lower bridge IGBT gate signal terminal, 105, lower bridge IGBT collector terminal, 106, lower bridge IGBT emitter terminal.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 3, a single-tube IGBT parallel motor control system includes an IGBT component 1, a control-drive integrated circuit board 2, a laminated busbar 3, a capacitor 4, a three-phase copper bar injection molded part 6, and a heat sink 7 for IGBTs, where the structure and corresponding connection relationship of each phase of the IGBT component 1 are the same, where the phase a is formed by connecting a first phase a upper bridge arm IGBT1-1 and a second phase a upper bridge arm IGBT1-2 in parallel with a first phase a lower bridge arm 1-3 and a second phase a lower bridge arm IGBT1-4, and the IGBT component 1 is connected with the laminated busbar 3 and the output copper bar 4-2 of the capacitor 4;

the right side of radiator 7 for the IGBT is equipped with electric capacity mounting groove 7-3, electric capacity 4 fixed mounting is in electric capacity mounting groove 7-3, 6 fixed connection of three-phase copper bar injection molding are in the left side of radiator 7 for the IGBT, female 3 arranging of stromatolite includes female 3-1 and the three-phase output copper bar 3-2 of arranging of negative pole, female 3-1 of arranging of negative pole still is equipped with female 3-3 of arranging the welding terminal of arranging, three-phase output copper bar 3-2 below is equipped with shield 5 for the sensor, and three-phase output copper bar 3-2 and 6 integrated into one piece of three-phase copper bar injection molding, 2 fixed connection of control drive integration circuit board are on electric capacity 4's shell and three-phase copper bar injection molding 6 to.

An upper bridge IGBT gate signal terminal 101 and a lower bridge IGBT gate signal terminal 104 of the IGBT component 1 are directly welded with the control drive integrated circuit board 2, an upper bridge IGBT collector 102 of the IGBT component 1 is in laser welding with the positive electrode of the capacitance output copper bar 4-2, an upper bridge IGBT emitter 103 of the IGBT component 1 is in laser welding with a lower bridge IGBT collector 105 of the IGBT component 1, and then the upper bridge IGBT emitter and the lower bridge IGBT collector are connected with the three-phase output copper bar 3-2 through laser welding to serve as the three-phase output end of the control system, a lower bridge IGBT emitter terminal 106 of the IGBT component 1 is in laser welding with a negative electrode busbar 3-1, and a busbar welding terminal 3-3 on the negative electrode busbar 3-1 is in laser welding with.

The IGBT assembly 1 is directly welded on the lug boss 7-1 for IGBT welding on the radiator 7 for IGBT by a vacuum welding process.

The negative electrode busbar 3-1 and the three-phase output copper bar 3-2 form a laminated busbar 3 by adopting a laminated busbar process.

And a high-voltage direct-current input terminal 4-1 is arranged on the outer side of the capacitor 4.

The radiator 7 for the IGBT is a water-cooling radiator, two ends of the radiator are respectively provided with a radiator cooling water pipe 7-2, and a radiator fin 8 is further arranged in the radiator 7 for the IGBT.

The control and drive integrated circuit board 2 is provided with a current sensor mounting groove 2-1, a sensor is mounted in the current sensor mounting groove 2-1, and after the control and drive integrated circuit board 2 is mounted in place, the sensor is just positioned right above the three-phase output copper bar 3-2 and is also positioned at the center of the shielding cover 5 for the sensor.

Each leg of each phase of the IGBT assembly 1 can also consist of 3 or 4 IGBT tubes connected in parallel.