CN216564944U - A low voltage starter generator controller - Google Patents

Abstract

The utility model discloses a low-voltage starting power generation controller, which belongs to the field of motor controllers and comprises the following components: the power supply comprises a box body, a control panel, a capacitor plate, a power plate, a filter capacitor and a filter inductor; the control panel, the capacitor plate and the power plate are sequentially stacked in the box body, and the filter capacitor and the filter inductor are respectively arranged on two sides of the capacitor plate. The power board is composed of MOSFET power devices in four-phase interleaved parallel DC/DC circuits and three-phase H-bridge inverter circuits, the capacitance board is composed of filter capacitors and filter inductors in the four-phase interleaved parallel DC/DC circuits, and the control board takes a digital signal processor as a core. By the optimized layout of the inductor and the capacitor and the space laminated design of the control panel, the capacitor plate and the power plate, the size and the weight of the low-voltage starting power generation controller are effectively reduced, the integrated integration of a starting power circuit and a power circuit for power generation is realized, and the reliability of the controller is improved.

Description

A low voltage starter generator controller

technical field

The utility model belongs to the field of motor controllers, and more particularly relates to a low-voltage starting and generating controller.

Background technique

In the low-voltage starter-generating system, it is necessary to introduce a bidirectional DC/DC converter to increase the bus voltage so as to provide the latter stage inverter for use. In the starting stage, the low-voltage power supply supplies power, which is boosted by the DC/DC converter to the high-voltage side DC bus, and then provided to the rear-stage inverter to drive the starter generator, drag the engine to the ignition speed, and then the engine starts to generate electricity. The machine generates electricity, and the energy is then stepped down by the bidirectional DC/DC converter after the inverter is supplied to the low-voltage side power supply. The low-voltage starter-generator controller is complex and poses more challenges to size, weight and reliability.

In low-voltage and high-current controllers, multi-phase interleaved parallel design is generally used for DC/DC topology to reduce the current stress of a single power device. Power devices need to be designed in parallel to reduce the current stress of a single power device. In the bidirectional DC/DC circuit, the filter inductor and filter capacitor occupy a large volume, which further increases the complexity, volume and weight of the circuit structure.

Utility model content

Aiming at the defects and improvement needs of the prior art, the utility model provides a low-voltage starter generator controller, the purpose of which is to effectively improve the performance by optimizing the layout of inductors and capacitors, and the space stacking design of the control board, capacitor board, and power board. Reduce the volume of the low voltage starter generator controller.

In order to achieve the above purpose, the utility model provides a low-voltage starting and generating controller, comprising: a box body, a control board, a capacitor board, a power board, a filter capacitor and a filter inductor; the control board, the capacitor board and the The power boards are stacked and placed in the box in sequence, and the filter capacitor and the filter inductor are respectively arranged on two sides of the capacitor board.

Further, it also includes: a cooling fan, which is arranged on the back of the box body; the filter inductor is arranged on the side of the capacitor plate opposite to the back of the box body, and is opposite to the back of the box body. touch.

Further, it also includes: a DC/DC converter and a DC/AC converter, both of which are arranged on the power board, and each includes a plurality of laterally arranged MOSFETs.

Further, it also includes: a support plate, disposed between the control plate and the capacitor plate; a plurality of bus bars, located between the support plate and the capacitor plate.

Further, the power board is located at the back of the box body, the capacitor board is provided with a plurality of copper columns, the control board, the support board and the plurality of bus copper bars pass through the plurality of copper columns. A copper column is fixed on the capacitor plate.

Further, it also includes: a plurality of power line plugs arranged on the bottom surface of the box body.

Further, it also includes: a plurality of aviation line plugs, which are arranged on the side of the box body.

In general, through the above technical solutions conceived by the present invention, the following beneficial effects can be achieved: through the optimized layout of inductors and capacitors, and the spatial stack design of control boards, capacitor boards, and power boards, the low-voltage start-up power generation can be effectively reduced. The volume and weight of the controller realize the integrated integration of the power circuit of starting and power generation; the reliability of the controller is increased through the rational design of the structural layout and the optimization of heat dissipation.

Description of drawings

1 is an exploded view of a low-voltage starter generator controller provided by an embodiment of the present utility model;

FIG. 2 is a rear view of a low-voltage starter generator controller provided by an embodiment of the present utility model;

3 is a bottom view of a low-voltage starter generator controller provided by an embodiment of the present utility model;

FIG. 4 is a right side view of a low-voltage starter-generator controller provided by an embodiment of the present invention.

Throughout the drawings, the same reference numbers are used to refer to the same elements or structures, wherein:

1 is the box, 2 is the control board, 3 is the capacitor board, 4 is the power board, 5 is the filter capacitor, 6 is the filter inductor, 7 is the cooling fan, 8 is the DC/DC converter, and 9 is the DC/AC converter , 10 is the support plate, 11 is the bus bar, 12 is the copper column, 13 is the power line plug, and 14 is the aviation line plug.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as there is no conflict with each other.

In the present invention, the terms "first", "second" and the like (if any) in the present invention and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

FIG. 1 is an exploded view of a low-voltage starter generator controller provided by an embodiment of the present invention. Referring to FIG. 1 , in conjunction with FIGS. 2 to 4 , a detailed description of the low-voltage starter-generator controller of this embodiment is given.

Referring to FIG. 1 , the low-voltage starter generator controller includes: a box 1 , a control board 2 , a capacitor board 3 , a power board 4 , a filter capacitor 5 and a filter inductor 6 . The control board 2 , the capacitor board 3 and the power board 4 are stacked and placed in the box 1 in sequence; the filter capacitor 5 and the filter inductor 6 are respectively arranged on both sides of the capacitor board 3 . The laminated structure reduces the volume of the low-voltage starting and generating controller, and the two-sided arrangement of the filter capacitor and the filter inductor makes full use of the box space, further reducing the volume of the low-voltage starting and generating controller.

Further, the power board 4 is composed of MOSFET power devices in the four-phase interleaved parallel DC/DC circuit and the three-phase H-bridge inverter circuit, and the capacitor board 3 is composed of filter capacitors in the four-phase interleaved parallel DC/DC circuit. 5. The filter inductor 6 is formed, and the control board 2 takes a digital signal processor (Digital Signal Processor, DSP) as the core.

The low-voltage starter-generator controller also includes a cooling fan 7 . The cooling fan 7 is arranged on the back of the box body 1 , as shown in FIG. 2 . The filter inductor 6 is arranged on the side of the capacitor plate 3 opposite to the back surface of the box body 1 , and is in contact with the back surface of the box body 1 . Further, the filter inductor 6 is closely attached to the back of the box body 1 to optimize the heat dissipation performance of the filter inductor 6 .

The low-voltage starter-generator controller also includes a DC/DC converter 8 and a DC/AC converter 9 provided on the power board 4 . The DC/DC converter 8 is a four-phase interleaved parallel DC/DC circuit; the DC/AC converter 9 is a three-phase H-bridge inverter circuit. Both the DC/DC converter 8 and the DC/AC converter 9 include a plurality of MOSFETs arranged laterally, specifically, for example, each includes a plurality of MOSFETs arranged laterally on the left and right. In this embodiment, a MOSFET power device with a high switching frequency is preferred, which can effectively reduce the volume of the inductance and capacitance. The heat generated by the loss of the MOSFETs in the DC/DC converter 8 and the DC/AC converter 9 can be dissipated through the box 1 and the cooling fan 7 to improve the stability of the low-voltage starter-generator controller.

The low-voltage starter-generator controller also includes a support plate 10 and a plurality of bus bars 11 . The support board 10 is arranged between the control board 2 and the capacitor board 3 ; a plurality of bus bars 11 are located between the support board 10 and the capacitor board 3 .

The power board 4 is located at the back of the box 1 , that is, the control board 2 , the support board 10 , the busbar 11 , the capacitor board 3 and the power board 4 are located between the front and the back of the box 1 in sequence. A plurality of copper pillars 12 are arranged on the capacitor plate 3 . The control board 2 , the support board 10 and the bus bar 11 are fixed on the capacitor board 3 through the copper posts 12 .

The low voltage starter generator controller also includes a plurality of power line plugs 13 . The power line plug 13 is arranged on the bottom surface of the box body 1 , as shown in FIG. 3 . The low voltage starter generator controller also includes a plurality of air line plugs 14 . The aviation cable plug 14 is arranged on the side of the box body 1 , as shown in FIG. 4 .

Those skilled in the art can easily understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and Improvements, etc., should be included within the protection scope of the present invention.

Claims (7)

1. A low-voltage starter generator controller, characterized in that it comprises: a box body (1), a control board (2), a capacitor board (3), a power board (4), a filter capacitor (5) and a filter inductor (6) ); The control board (2), the capacitor board (3) and the power board (4) are stacked and placed in the box (1) in sequence, and the filter capacitor (5) and the filter inductor ( 6) are respectively arranged on both sides of the capacitor plate (3). 2. The low-voltage starter-generator controller of claim 1, further comprising: a cooling fan (7), arranged on the back of the box body (1); The filter inductor (6) is arranged on the side of the capacitor plate (3) opposite to the backside of the box body (1), and is in contact with the backside of the box body (1). 3. The low-voltage starter-generator controller according to claim 1, further comprising: a DC/DC converter (8) and a DC/AC converter (9), both of which are arranged on the power board (4) , and each includes a plurality of laterally arranged MOSFETs. 4. The low-voltage starter-generator controller of claim 1, further comprising: a support plate (10) arranged between the control plate (2) and the capacitor plate (3); A plurality of bus bars (11) are located between the support plate (10) and the capacitor plate (3). 5. The low-voltage starter-generator controller according to claim 4, wherein the power board (4) is located at the back of the box (1), and the capacitor board (3) is provided with a plurality of A copper column (12), the control board (2), the support plate (10) and the plurality of bus bars (11) are fixed on the capacitor plate (3) through the plurality of copper columns (12) )superior. 6. The low-voltage starter-generator controller according to any one of claims 1-5, further comprising: a plurality of power line plugs (13) arranged on the bottom surface of the box body (1). 7. The low-voltage starter-generator controller according to any one of claims 1-5, characterized in that, further comprising: a plurality of aviation line plugs (14) arranged on the side surface of the box body (1).

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