CN217010635U - Split type BSG motor control system - Google Patents

Abstract

The utility model relates to a split type BSG motor control system which comprises a permanent magnet motor and a motor inverter which are mutually connected, wherein the permanent magnet motor comprises a motor shaft, magnetic steel is arranged at one end of the motor shaft, the motor inverter comprises an inverter box body, a power inversion assembly and a control board, the power inversion assembly and the control board are sequentially arranged on a bottom plate of the inverter box body, a magnetic coding chip is arranged on the control board, a raised tubular structure is arranged on the bottom plate, one end of the tubular structure is an open end and is connected with the bottom plate, the other end of the tubular structure is a raised sealing end, a through hole is formed in the power inversion assembly, the sealing end is opposite to the magnetic coding chip after penetrating through the through hole, and one end of the motor shaft is inserted into the open end. Compared with the prior art, the utility model has the advantages of simple structure, high integration level, realization of miniaturization of equipment and the like.

Description

Split type BSG motor control system

Technical Field

The utility model relates to the field of electrode driving systems, in particular to a split type BSG motor control system.

Background

Energy-saving and new energy automobiles become the development direction of the international automobile industry, and the 48V BSG power assembly technology is a mild hybrid power technology. Unlike the electric automobile technology, the BSG optimizes the working condition of the traditional gasoline and diesel engine, can improve the fuel efficiency under the conditions of idling, starting and the like, and achieves the fuel-saving effect. Driven by energy conservation and oil conservation, the market share of hybrid electric vehicles is gradually expanded, and the demand of a 48V BSG driving system in a whole vehicle factory is more and more. However, the existing BSG system has low integration level, for example, an external resolver decoding board is generally adopted to test the rotation speed of the motor, which results in a complex structure and inconvenient installation.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcoming the above-mentioned shortcomings of the prior art and providing a split BSG motor control system.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a split type BSG motor control system, includes interconnect's permanent-magnet machine and motor inverter, permanent-magnet machine includes the motor shaft, and the one end of motor shaft is equipped with the magnet steel, motor inverter includes dc-to-ac converter box, power contravariant subassembly and control panel set gradually on the bottom plate of dc-to-ac converter box, be equipped with the magnetic coding chip on the control panel, be equipped with a bellied tubular structure on the bottom plate, the one end of this tubular structure is the open end and connects the bottom plate, and the other end is bellied sealed end, be equipped with the through-hole on the power contravariant subassembly, sealed end is just to the magnetic coding chip after passing the through-hole, the open end is inserted to the one end of motor shaft.

Further, the through hole is located at the midpoint of the power inverter assembly.

Further, the permanent magnet motor comprises motor input terminals, and the motor inverter comprises an alternating current output assembly connected with the motor input terminals.

Further, the alternating current output assembly comprises a plastic package support, a Hall element and an alternating current end copper bar, the plastic package support is connected with the permanent magnet motor through a bolt, the plastic package support is provided with a mounting groove, the Hall element is fixed in the mounting groove, a contact pin of the Hall element is connected with the control panel, and the alternating current end copper bar is respectively connected with the power inversion assembly and the motor input terminal.

Further, the power contravariant subassembly includes power module, electric capacity core, connecting copper bar and the female support of arranging of moulding plastics, connecting copper bar is moulded plastics and is fixed in the female support of arranging of moulding plastics, power module distributes around the female support of arranging of moulding plastics, electric capacity core is installed in the central authorities of the female support of arranging of moulding plastics, connecting copper bar connects power module and electric capacity core.

Furthermore, the injection molding busbar support is provided with barrier strips, the capacitor cores are clamped among the barrier strips, and the end parts of the barrier strips are connected with the bottom plate, so that the capacitor cores are away from the bottom plate by a certain gap.

Furthermore, a concave cavity is arranged on the bottom plate and used for limiting and fixing the barrier strips.

Furthermore, the power modules are distributed around the injection molding busbar support in a shape like a Chinese character 'pin'.

Further, still include the upper cover plate, the upper cover plate is installed on the inverter box.

Further, an insulating film is arranged between the power inverter assembly and the bottom plate.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model designs a brand new integrated speed measuring structure, a motor shaft of a permanent magnet motor penetrates into a motor inverter through a tubular structure, and then a control panel with a magnetic coding chip is arranged on the motor inverter and used for sensing magnetic steel on the motor shaft to sense and detect the position of a rotating shaft of the motor, so that the structure can be simplified, the integration level can be improved, and the miniaturization of equipment can be realized.

2. According to the utility model, the alternating current output assembly is adopted to connect the motor inverter and the permanent magnet motor, so that the electric connection is realized while the installation is carried out, and the structure is convenient to install and disassemble.

3. The utility model designs the power modules distributed in a shape like a Chinese character pin, so that the heat dissipation generated in the modules can be more dispersed, the heat concentration is avoided, and the heat dissipation performance can be effectively improved.

Drawings

FIG. 1 is a schematic view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic structural diagram of the ac output module.

Fig. 4 is a schematic structural diagram of a power inverter assembly.

Fig. 5 is a schematic structural diagram of an injection molding busbar bracket.

Fig. 6 is a top view of the base plate.

Reference numerals: 1. the motor inverter, 11, the signal plug-in components, 12, the upper cover plate, 13, the control panel, 14, the metal clamp plate, 15, the blotter, 16, exchange output assembly, 161, the plastic envelope support, 162, hall components and parts, 163, exchange end copper bar, 164, soft magnetic core, 17, the power contravariant subassembly, 171, the power module, 172, the electric capacity core, 173, female support of arranging of moulding plastics, 731, the plastic support, 1732, anodal copper bar, 1733, negative pole copper bar, 1734, the blend stop, 174, connect copper bar, 18, the insulating film, 19, the filter subassembly, 110, the box, 1101, the cavity, 1102, tubular structure, 2, permanent-magnet machine, 21, the magnet steel, 22, the motor shaft, 23, the motor input terminal.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 and fig. 2, the present embodiment provides a split BSG motor control system, which includes a permanent magnet motor 2 and a motor inverter 1, where the motor inverter 1 is fixed on a rear end cover of the permanent magnet motor 2.

The motor inverter 1 comprises an upper cover plate 12, a control board 13, a metal pressure plate 14, a cushion pad 15, an alternating current output assembly 16, a power inverter assembly 17, an insulating film 18, a filter assembly 19 and a motor box 110. The upper cover plate 12 is installed on the motor box body 110 to form a shell, and the control board 13, the metal pressing plate 14, the buffer pad 15, the alternating current output assembly 16, the power inverter assembly 17, the insulating film 18 and the filter assembly 19 are all installed in the shell. The power inverter assembly 17 and the control board 13 are sequentially disposed on a bottom plate of the inverter box 110, a raised tubular structure 1102 is disposed on the bottom plate, one end of the tubular structure 1102 is an open end and is connected to the bottom plate, and the other end of the tubular structure is a raised sealed end. A through hole is formed in the power inverter assembly 17 and is located in the center of the power inverter assembly 17; the control panel 13 is provided with a magnetic coding chip, and the sealed end of the tubular structure 1102 is opposite to the magnetic coding chip after passing through the through hole. The insulating film 18 is fixedly adhered to the bottom plate of the case 110 and positioned between the power inverter assembly 17 and the bottom plate to perform an isolation function. A buffer pad 15 and a metal pressing plate 14 are also arranged between the power inverter assembly 17 and the upper cover plate 12; the buffer pad 15 is made of silicon rubber materials and mainly plays a role in protecting the power module 171 and preventing the power inverter assembly 17 from being damaged by crushing; the metal pressing plate 14 is made of aluminum alloy, is arranged above the cushion pad 15, and is locked and fixed inside the box body 110 through bolts, and mainly plays a role in fixing and shielding.

The permanent magnet motor 2 includes a motor shaft 22 and a motor input terminal 23. One end of the motor shaft 22 is provided with a magnetic steel 21, one end of the motor shaft 22 is inserted into the open end of the tubular structure 1102 and then faces the magnetic coding chip through the sealed end of the tubular structure 1102, and the edge gap between the motor shaft 22 and the through hole is 1 mm. Thus, the magnetically encoded chip can be used to sense and detect the rotational position of the motor shaft 22. Three motor input terminals 23 are respectively connected with three alternating current output assemblies 16 of the motor inverter 1, and the specific structure is as follows:

as shown in fig. 3, the ac output module 16 integrates a current sensor structure therein, which includes a plastic-sealed bracket 161, a hall element 162 and an ac terminal copper bar 163. The plastic package support 161 is connected with the permanent magnet motor 2 through a bolt, and the motor and the inverter are conveniently separated under the condition of repair by the bolt connection mode. The plastic package support 161 is provided with a mounting groove, and the hall element 162 is fixed in the mounting groove through dispensing. The pin of the hall element 162 is connected with the control board 13, and the alternating current terminal copper bar 163 is respectively connected with the power inverter assembly 17 and the motor input terminal 23 through resistance welding.

As shown in fig. 4 and 5, the power inverter assembly 17 includes a power module 171, a capacitor core 172, a connecting copper bar 174, and an injection-molded busbar support 173. The connecting copper bars 174 are fixed in the injection molding bus bar support 173 by injection molding, the power modules 171 are distributed around the injection molding bus bar support 173 in a shape like a Chinese character 'pin', and the capacitor cores 172 are installed in the center of the injection molding bus bar support 173. The connecting copper bar 174 connects the power module 171 and the capacitor core 172. A barrier strip 1734 is arranged below the injection molding busbar bracket 173, the capacitor core 172 is clamped among the barrier strips 1734, the end part of the barrier strip 1734 is connected with the bottom plate, and the barrier strip 1734 is used for separating the capacitor core 172 from the bottom plate of the box body 110 to ensure an electrical gap. As shown in fig. 6, a cavity 1101 is formed on the bottom plate of the box 110 for limiting and fixing the barrier 1734 and fixing the power module 171, and heat dissipation fins are formed at the bottom of the cavity 1101 to facilitate heat dissipation of the power module 171 and the capacitor core 172.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. A split type BSG motor control system is characterized by comprising a permanent magnet motor (2) and a motor inverter (1) which are connected with each other, wherein the permanent magnet motor (2) comprises a motor shaft (22), magnetic steel (21) is arranged at one end of the motor shaft (22), the motor inverter (1) comprises an inverter box body (110), a power inverter assembly (17) and a control panel (13), the power inverter assembly (17) and the control panel (13) are sequentially arranged on a bottom plate of the inverter box body (110), a magnetic coding chip is arranged on the control panel (13), a raised tubular structure (1102) is arranged on the bottom plate, one end of the tubular structure (1102) is an open end and connected with the bottom plate, the other end of the tubular structure is a raised sealing end, a through hole is formed in the power inverter assembly (17), and the sealing end is opposite to the magnetic coding chip after penetrating through the through hole, one end of the motor shaft (22) is inserted into the open end.

2. The split BSG motor control system of claim 1, wherein the through hole is located at the midpoint of the power inverter assembly (17).

3. The split BSG motor control system of claim 1, wherein the permanent magnet motor (2) includes motor input terminals (23), and the motor inverter (1) includes an ac output assembly (16) connected to the motor input terminals (23).

4. The split type BSG motor control system according to claim 3, wherein the AC output assembly (16) includes a plastic package support (161), a Hall element (162) and an AC end copper bar (163), the plastic package support (161) is connected to the permanent magnet motor (2) through a bolt, the plastic package support (161) is provided with a mounting groove, the Hall element (162) is fixed in the mounting groove, a pin of the Hall element (162) is connected to the control board (13), and the AC end copper bar (163) is respectively connected to the power inverter assembly (17) and the motor input terminal (23).

5. The split type BSG motor control system of claim 3, wherein the power inverter assembly (17) comprises a power module (171), a capacitor core (172), a connecting copper bar (174) and an injection molding busbar support (173), the connecting copper bar (174) is fixed in the injection molding busbar support (173) in an injection molding manner, the power module (171) is distributed around the injection molding busbar support (173), the capacitor core (172) is installed in the center of the injection molding busbar support (173), and the connecting copper bar (174) is connected with the power module (171) and the capacitor core (172).

6. The split type BSG motor control system of claim 5, wherein the injection molded busbar support (173) is provided with a plurality of bars (1734), the capacitor cores (172) are clamped between the bars (1734), and the end portions of the bars (1734) are connected with the bottom plate, so that the capacitor cores (172) are spaced from the bottom plate by a certain distance.

7. The split type BSG motor control system of claim 6, wherein the base plate is provided with a cavity (1101) for forming a limit fixing for the barrier strip (1734).

8. The split type BSG motor control system of claim 5, wherein the power modules (171) are distributed around the injection-molded busbar support (173) in a delta shape.

9. The split type BSG motor control system according to claim 1, further comprising an upper cover plate (12), wherein said upper cover plate (12) is mounted on the inverter case (110).

10. The split type BSG motor control system according to claim 1, wherein an insulating film (18) is provided between the power inverter assembly (17) and the base plate.

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