Engine power driver

Abstract

The utility model discloses an engine power driver which comprises a supporting assembly, a radiator and a motor assembly, the supporting assembly is composed of a bottom shell and a face shell, and the motor assembly is installed on the upper surface of the radiator and comprises a low-altitude motor part, a wind scoop motor part and a vacuum motor part. Three sets of isolation supports are installed at the positions, located on the upper surface of the radiator, of the top of the bottom shell at intervals. The three sets of isolation supports correspondingly support the low-altitude motor part, the wind scoop motor part and the vacuum motor part from right to left in sequence. The power drive assembly has the characteristics of simple assembly, compact structure, good heat dissipation effect, high power density and low manufacturing cost, all parts can be separated from one another for protection, electromagnetic radiation interference in all the parts is effectively reduced and inhibited, self-cooling of all the parts of the power drive assembly is realized, and the heat dissipation effect of the power drive assembly is improved.

Description

Technical Field

[0001] The utility model relates to the field of engine power drive components, in particular to an engine power driver. Background Art

[0002] The power drive component is an important component of electronic equipment and can be used as one of the core components of the engine controller. The power drive component consists of a drive circuit and a power circuit. The power drive component controls the operation of motor components such as the engine's wind bucket motor, low-altitude motor and vacuum motor. The power drive component can isolate and amplify the PWM signals of each motor, and then drive the power tube to open and close.

[0003] However, the power drive components currently on the market have poor heat dissipation effects. During use, the internal components often generate a large amount of heat that is difficult to dissipate quickly, so that excessively high temperatures can easily affect the service life of the various components of the power drive components. In addition, the power drive components are large in size and low in power density. When in use, there are electromagnetic interference problems among the various components, which affects the promotion and use of the power drive components. Utility Model Content

[0004] The utility model aims to provide an engine power driver to solve the problems of poor heat dissipation, large volume, low power density and electromagnetic interference proposed in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An engine power driver, comprising:

[0007] A support assembly, the support assembly is composed of a bottom shell and a top shell, and the top shell is detachably connected to the bottom shell;

[0008] A radiator, the radiator being mounted on the bottom shell and having a built-in liquid cooling plate;

[0009] A motor assembly, the motor assembly being mounted on the upper surface of the radiator, the motor assembly comprising a low altitude motor portion, a wind bucket motor portion and a vacuum motor portion;

[0010] Among them, the top of the bottom shell is located on the upper surface of the radiator and three groups of isolation brackets are installed at intervals. The three groups of isolation brackets support the low-altitude motor part, the wind bucket motor part and the vacuum motor part from right to left in sequence; the low-altitude motor part is composed of a No. 1 IGBT part, a low-altitude motor power board and a low-altitude motor drive board, and the low-altitude motor power board is welded on the No. 1 IGBT part; the wind bucket motor part is composed of a No. 2 IGBT part, a wind bucket motor power board and a wind bucket motor drive board, and the wind bucket motor power board is welded on the No. 2 IGBT part; the vacuum motor part is composed of a No. 3 IGBT part, a vacuum motor power board and a vacuum motor drive board, and the vacuum motor power board is welded on the No. 3 IGBT part.

[0011] Furthermore, the liquid cooling plate built into the radiator uses fuel as a cooling medium to achieve self-cooling and heat dissipation of the low-altitude motor part, the wind bucket motor part and the vacuum motor part.

[0012] Furthermore, the No. 1 IGBT part, the No. 2 IGBT part and the No. 3 IGBT part form an IGBT assembly, the output end of the IGBT assembly is used to collect the phase current of the motor, and the input end of the IGBT assembly is used to collect the bus current.

[0013] Furthermore, the three-phase terminal voltages of the low-altitude motor unit, the wind bucket motor unit and the vacuum motor unit are inverted from the bus voltage.

[0014] The beneficial effects of the utility model are:

[0015] The utility model has the characteristics of simple assembly, compact structure, good heat dissipation effect, high power density, low manufacturing cost and small overall volume. It can rely on isolation brackets to separate and protect various components from each other, effectively reduce and suppress electromagnetic radiation interference in various components, and use a radiator with fuel as a cooling medium to achieve self-cooling of various components of the power drive assembly, improve the heat dissipation effect of the power drive assembly, solve the problems of mutual electromagnetic interference and heat dissipation of existing power drive assemblies, and is conducive to the promotion and use of the power drive assembly of the high power density engine controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural stereogram of the utility model;

[0017] Figure 2 This is a principle block diagram of the utility model.

[0018] In the figure: 1 bottom shell, 2 surface shell, 3 isolation bracket, 4 No. 1 IGBT part, 5 low-altitude motor power board, 6 low-altitude motor drive board, 7 No. 2 IGBT part, 8 wind bucket motor power board, 9 wind bucket motor drive board, 10 No. 3 IGBT part, 11 vacuum motor power board, 12 vacuum motor drive board, 13 heat sink. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2 , which provides a technical solution for the utility model, an engine power driver, including a support assembly, a radiator 13 and a motor assembly; the support assembly is composed of a bottom shell 1 and a surface shell 2, and the surface shell 2 is detachably connected to the bottom shell 1; the motor assembly mentioned is installed on the upper surface of the radiator 13, and the motor assembly includes a low-altitude motor part, a wind bucket motor part and a vacuum motor part; wherein, the top of the bottom shell 1 is located on the upper surface of the radiator 13 and three groups of isolation brackets 3 are installed at intervals, and the three groups of isolation brackets 3 correspond to supporting the low-altitude motor part, the wind bucket motor part and the vacuum motor part from right to left in sequence; wherein, the low-altitude motor part mentioned is composed of a No. 1 IGBT part 4, a low-altitude motor power board 5 and a low-altitude motor drive board 6, and the low-altitude motor power board 5 is welded on the No. 1 IGBT part 4, wherein, the The mentioned wind bucket motor part is composed of the No. 2 IGBT part 7, the wind bucket motor power board 8 and the wind bucket motor drive board 9. The wind bucket motor power board is welded on the No. 2 IGBT part 7. The vacuum motor part is composed of the No. 3 IGBT part 10, the vacuum motor power board 11 and the vacuum motor drive board 12. The vacuum motor power board 11 is welded on the No. 3 IGBT part 10. The radiator 13 is installed on the bottom shell 1. The radiator 13 has a built-in liquid cooling plate. The built-in liquid cooling plate of the radiator 13 uses fuel as the cooling medium to achieve self-cooling and heat dissipation of the low-altitude motor part, the wind bucket motor part and the vacuum motor part. Oil cooling technology is adopted. Since the product has strict requirements on the volume and weight, it brings severe challenges to the product structure design, and it is necessary to comprehensively consider product assembly, electromagnetic compatibility, heat dissipation and other performance indicators.

[0021] In this embodiment, the three-phase terminal voltage of the low-altitude motor unit, the wind bucket motor unit and the vacuum motor unit is inverted by the bus voltage, and the No. 1 IGBT unit 4, the No. 2 IGBT unit 7 and the No. 3 IGBT unit 10 form an IGBT assembly, the output end of the IGBT assembly collects the phase current of the motor, and the input end of the IGBT assembly collects the bus current; the high-power density engine controller power drive assembly can isolate and amplify the PWM signals of the three motors of the low-altitude motor unit, the wind bucket motor unit and the vacuum motor unit, drive the opening and closing of the power tube, invert the 270VDC bus into three-phase power, collect the bus voltage, bus current, phase current, detect the temperature of the internal power tube, and have the function of detecting and uploading the drive circuit fault; the high-power density engine controller power drive assembly sets the total power of the power drive assembly to 17KW, the low-altitude motor unit, the wind bucket motor unit and the vacuum motor unit The motor part can be set to 10KW and two 3.5KW, and the overall input power is a 270V battery; the high power density engine controller power drive component is the power inverter part in the engine integrated controller, which is an SRU-level functional component, and realizes the inversion of the 270VDC bus voltage into the three-phase terminal voltage of the low-altitude motor, the wind bucket motor and the high-altitude motor. The radiator 13 adopts machine addition to each part, and then the heat dissipation teeth and each part are welded by vacuum brazing to form a complete radiator. All processing techniques are mature techniques with good processability and low manufacturing cost. The power board is directly welded on the IGBT and then connected to the drive board through a connector. It is simple to assemble and compact in structure. That is, the wind bucket motor power board 8 is connected to the wind bucket motor drive board 9 through a connector, the vacuum motor power board 11 is connected to the vacuum motor drive board 12 through a connector, and the low-altitude motor power board 5 is connected to the low-altitude motor drive board 6 through a connector.

[0022] To sum up: the high power density engine controller power drive component can rely on the isolation bracket 3 to isolate and protect the various components from each other, effectively reduce and suppress the electromagnetic radiation interference in the various components, and use the radiator 13 with fuel as the cooling medium to achieve self-cooling of the various components of the power drive component, improve the heat dissipation effect of the power drive component, and solve the existing power drive component The electromagnetic interference and severe heat dissipation problems; and the high power density engine controller power drive component collects bus voltage, bus current, phase current, detects the temperature of the internal power tube, and has the function of detecting and uploading drive circuit faults.

Claims

1. An engine power driver, characterized in that: include: A support assembly, the support assembly is composed of a bottom shell and a top shell, and the top shell is detachably connected to the bottom shell; A radiator, the radiator being mounted on the bottom shell and having a built-in liquid cooling plate; A motor assembly, the motor assembly being mounted on the upper surface of the radiator, the motor assembly comprising a low altitude motor portion, a wind bucket motor portion and a vacuum motor portion; Among them, the top of the bottom shell is located on the upper surface of the radiator and three groups of isolation brackets are installed at intervals. The three groups of isolation brackets support the low-altitude motor part, the wind bucket motor part and the vacuum motor part from right to left in sequence; the low-altitude motor part is composed of a No. 1 IGBT part, a low-altitude motor power board and a low-altitude motor drive board, and the low-altitude motor power board is welded on the No. 1 IGBT part; the wind bucket motor part is composed of a No. 2 IGBT part, a wind bucket motor power board and a wind bucket motor drive board, and the wind bucket motor power board is welded on the No. 2 IGBT part; the vacuum motor part is composed of a No. 3 IGBT part, a vacuum motor power board and a vacuum motor drive board, and the vacuum motor power board is welded on the No. 3 IGBT part.

2. An engine power driver according to claim 1, characterized in that: The liquid cooling plate built into the radiator uses fuel as a cooling medium to achieve self-cooling and heat dissipation of the low-altitude motor part, the wind bucket motor part and the vacuum motor part.

3. An engine power driver according to claim 1, characterized in that: The No. 1 IGBT part, the No. 2 IGBT part and the No. 3 IGBT part form an IGBT assembly, the output end of the IGBT assembly is used to collect the phase current of the motor, and the input end of the IGBT assembly is used to collect the bus current.

4. An engine power driver according to claim 1, characterized in that: The three-phase terminal voltages of the low-altitude motor unit, the wind bucket motor unit and the vacuum motor unit are inverted from the bus voltage.

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