阅读说明：本技术 马达的驱动器 (Driver of motor ) 是由 碇谷知也 大兼贵彦 古塩文明 平野宏幸 于 2019-03-08 设计创作，主要内容包括：本发明提供一种马达的驱动器,包括：铝基板10,形成壳体的一面；绝缘层11,形成于铝基板10的表面；多个电子元件13,接合于绝缘层11上且与铝基板10为相反侧的面；以及树脂构件14,将接合有电子元件13的一侧的面覆盖,且树脂构件14是使从上表面被覆电子元件13的模塑树脂部20、电连接于电子元件13的连接器21、及用于安装于马达的安装部22一体化而成。(The present invention provides a driver of a motor, comprising: an aluminum substrate 10 forming one surface of the case; an insulating layer 11 formed on the surface of the aluminum substrate 10; a plurality of electronic components 13 bonded to the insulating layer 11 and having a surface opposite to the aluminum substrate 10; and a resin member 14 covering a surface on the side to which the electronic component 13 is joined, wherein the resin member 14 is formed by integrating a molded resin portion 20 covering the electronic component 13 from the upper surface, a connector 21 electrically connected to the electronic component 13, and a mounting portion 22 for mounting to a motor.)

1. A driver for a motor, comprising:

an aluminum substrate forming one surface of the case;

the insulating layer is formed on the surface of the aluminum substrate;

a plurality of electronic components bonded to the insulating layer and having a surface opposite to the aluminum substrate; and

a resin member covering a surface on which the electronic component is bonded, and

the resin member is formed by integrating a molded resin portion covering the electronic component from the upper surface, a connector electrically connected to the electronic component, and a mounting portion for mounting to a motor.

2. The driver of a motor according to claim 1,

the mounting portion of the resin member has a frame body capable of housing the electronic component,

the frame is filled with the mold resin portion.

3. The drive of the motor according to any one of claims 1 or 2,

the surface of the aluminum substrate on the opposite side of the insulating layer is black.

4. The drive of the motor according to any one of claims 1 to 3,

and a heat sink is provided on the surface of the aluminum substrate on the opposite side of the insulating layer.

5. The driver of a motor according to any one of claims 1 to 4,

one of the plurality of electronic components is a memory,

the connector is provided with a connector for writing to the memory.

6. The driver of a motor according to any one of claims 1 to 5,

the electronic component serves as a control portion of a motor that drives the cooling fan.

7. The driver of a motor according to claim 6,

an air blowing area of the cooling fan driven by the motor is provided on a surface of the aluminum substrate located on the opposite side to the insulating layer.

Technical Field

The present invention relates to a driver for a motor such as a brushless fan motor (brushless fan motor).

The present application claims priority based on japanese patent application No. 2018-167025 filed in japan on 6.9.2018, the contents of which are incorporated herein by reference.

Background

For example, a brushless motor is sometimes used as the fan motor. As the fan motor, there is a fan motor including: a cooling fan that is rotated by the fan motor and that forms a cooling air flow in an axial direction by the rotation; and a circuit device as a driver provided above the fan motor in a vehicle-mounted state and controlling driving of the fan motor.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2008-172861

Disclosure of Invention

Problems to be solved by the invention

In the above-described conventional brushless motor, a circuit device as a driver for controlling the driving of the fan motor is cooled by the air blown from the cooling fan.

However, in the above brushless motor, depending on the position to which the cooling air is blown, the driver may not be sufficiently cooled, and heat radiation may be insufficient.

In the brushless motor, the driver is usually not removable, and the driver cannot be disposed at a position other than a predetermined position. Therefore, in the brushless motor, when the cooling air is not blown, there is a possibility that sufficient measures such as adjustment of the actuator position cannot be taken.

Accordingly, the present invention provides a motor driver including a heat dissipation mechanism in the driver, and capable of easily attaching and detaching a motor, thereby making it possible to perform a sufficient heat countermeasure.

Means for solving the problems

In order to solve the above problems, the present invention proposes the following technical means.

The driver of the motor of the present invention is characterized by comprising: an aluminum substrate forming one surface of the case; the insulating layer is formed on the surface of the aluminum substrate; a plurality of electronic components formed on the insulating layer and bonded to a surface opposite to the aluminum substrate; and a resin member that covers one surface of the side to which the electronic component is joined, wherein the resin member is configured by integrating a molded resin portion that covers the electronic component from an upper surface, a connector that is electrically connected to the electronic component, and a mounting portion that is to be mounted to a motor.

With the above configuration, heat generated by the electronic components of the driver can be efficiently released to the outside through the aluminum substrate forming one surface of the case.

In the above invention, the aluminum substrate is provided with the resin member in which the molded resin portion, the connector, and the mounting portion are integrated, whereby molding of the electronic component, electrical connection to the electronic component, and mounting/dismounting/position adjustment to the motor can be performed at a time.

In the motor driver according to the present invention, the mounting portion of the resin member has a frame body capable of accommodating the electronic component, and the molded resin portion is filled in the frame body.

By configuring as described above, the driver of the motor and the mold resin portion can be easily attached through the housing.

In the motor driver according to the present invention, a surface of the aluminum substrate located on the opposite side of the insulating layer is black.

With the above configuration, the emissivity can be improved by the black surface of the aluminum substrate, and the heat dissipation of the electronic component can be further improved.

In the motor driver according to the present invention, a heat sink (heat sink) is provided on a surface of the aluminum substrate located on a side opposite to the insulating layer.

By configuring as described above, heat can be efficiently released through the aluminum substrate and the heat sink.

In the motor driver according to the present invention, one of the plurality of electronic components is a memory, and the connector is provided with a connector for writing to the memory.

By configuring as described above, various data (for example, a serial number, a manufacturing process history, shipment inspection data, and the like) can be written into the memory in the electronic component via the connector.

The motor driver according to the present invention is characterized in that the electronic component is used as a control unit for driving a motor of a cooling fan.

By configuring as described above, the cooling fan can be efficiently driven.

In the motor driver according to the present invention, an air blowing region of the cooling fan driven by the motor is provided on a surface of the aluminum substrate located on a side opposite to the insulating layer.

By configuring as described above, the cooling efficiency of the electronic component can be improved.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, heat generated by the electronic components of the driver can be efficiently released to the outside through the aluminum substrate forming one surface of the case.

In the above invention, the resin member formed by integrating the mold resin portion, the connector, and the mounting portion is provided on the aluminum substrate, so that the molding of the electronic component, the electrical connection to the electronic component, and the mounting/dismounting/position adjustment to the motor can be performed all at once, and the mounting/dismounting to/from the motor can be performed freely.

Drawings

Fig. 1 is a perspective view of an actuator according to an embodiment of the present invention viewed from the front side.

Fig. 2 is a schematic configuration diagram showing a state in which the motor according to the embodiment of the present invention is provided with an actuator.

Fig. 3 is an exploded perspective view of the actuator according to the embodiment of the present invention.

Fig. 4 is a perspective view of the actuator according to the embodiment of the present invention, as viewed from the back side.

Fig. 5A is a sectional view showing a substrate portion of the actuator according to the embodiment of the present invention, and shows an example of a case where an alumite (alumite) treatment is not performed on an outer surface of the aluminum substrate.

Fig. 5B is a sectional view showing a substrate portion of the actuator according to the embodiment of the present invention, and shows an example of a case where an alumite treatment is performed on an outer surface of the aluminum substrate.

Fig. 6 is a perspective view of a case where heat radiating fins are provided on the rear surface of an aluminum substrate according to an embodiment of the present invention.

Fig. 7 is a sectional view of the driver according to the embodiment of the present invention in which the aluminum substrate is provided on the opposite side of the motor.

Fig. 8 is a sectional view of a case where the aluminum substrate of the driver according to the embodiment of the present invention is provided on the motor side.

Fig. 9 is a perspective view of a motor three-phase wire connector according to an embodiment of the present invention projecting toward a molded resin side.

Fig. 10 is a block diagram showing the structure of the IPD 200.

Fig. 11 is a block diagram showing the structure of the IPD 300.

Fig. 12 is a block diagram showing the structure of the IPD 400.

Fig. 13 is a block diagram showing the structure of IPD 600.

Fig. 14 is a block diagram showing the structure of IPD 700.

Fig. 15 is a block diagram showing the structure of IPD 800.

Fig. 16 is a diagram showing an overlapping variable rectangular wave current pattern output by IPD 800.

Fig. 17 is a block diagram showing the structure of IPD 900.

Fig. 18 is a block diagram showing the structure of iDU 130.

Detailed Description

An actuator 100 of a motor 101 according to an embodiment of the present invention will be described with reference to fig. 1 to 8.

Fig. 1 is a perspective view of an actuator 100 according to the present embodiment viewed from the front side. Fig. 2 is a schematic configuration diagram showing a state in which the actuator 100 is provided in the motor 101.

The motor 101 shown in fig. 2 is used as a fan motor, for example. The motor 101 includes: a support 1 as a base; a rotary main shaft 3 which is arranged on the support body 1 in a protruding way; a rotor 7 having a substantially bottomed cylindrical shape, which is rotatably supported by the rotary spindle 3 via a bearing member 2; and a stator 5 fixed to a radially inner side of the rotor 7.

A winding 4 is wound around the stator 5. A rotor magnet 6 is provided on the inner peripheral surface of the rotor 7. The winding 4 and the rotor magnet 6 are arranged at a radial distance. A cooling fan 8 that generates cooling air by rotation is provided on the outer peripheral surface of the rotor 7.

In the motor 101 as described above, the stator 5 generates a rotating magnetic field by switching the power supply to the winding 4 of each phase based on a control signal from the driver 100 serving as a controller. In the motor 101, the rotor 7 is rotated by the rotating magnetic field generated by the stator 5 acting on the rotor magnet 6, and the cooling fan 8 is also rotated together with the rotor 7. By this rotation of the cooling fan 8, cooling air indicated by an arrow a in fig. 2 is generated.

The driver 100 shown in fig. 1 and 2 is used as a controller for driving the motor 101 of the cooling fan 8, but is an example and is applicable to motors for various applications.

Next, the configuration of the driver 100 serving as a controller will be described with reference to fig. 1 and 3, fig. 4, fig. 5A, and fig. 5B.

As shown in fig. 2, 3, and 5A, the driver 100 includes: an aluminum substrate 10 forming one surface of the case; an insulating layer 11 formed on the surface of the aluminum substrate 10; a plurality of electronic components 13 bonded to the copper foil layer 12 on the insulating layer 11 (see fig. 5A); and a resin member 14 covering a surface on which the electronic components 13 are bonded.

As shown in fig. 5A, the copper foil layer 12 and the electronic component 13 on the insulating layer 11 are sequentially laminated on the upper surface of the aluminum substrate 10. Further, the insulating layer 11 is made of epoxy resin.

As shown in fig. 4 and 5A, the aluminum substrate 10 may be formed of a single aluminum layer 10A. As shown in fig. 5B, the aluminum substrate 10 may be formed integrally with an insulating oxide film 10B containing an alumina coating on the aluminum layer 10A by subjecting the aluminum layer to an alumite treatment on the outer surface side. Further, by forming such an insulating oxide film 10B, application of static electricity from the outside can be blocked, and insulation resistance can be improved.

The plurality of electronic elements 13 are formed as an Integrated Driver Unit (iDU) in which Driver components (for example, a microcomputer (micro-computer), a control Integrated Circuit (IC), a Field Effect Transistor (FET), a capacitor, a choke coil (choke coil), and the like) are Integrated in a single package (one-package).

Further, a memory function is provided inside the plurality of electronic components 13 formed at iDU.

In the memory, a code (code) for specifying an individual, a manufacturing process history, shipment inspection data, and the like can be written/read in the form of digital data.

As shown in fig. 3, the resin member 14 is formed by integrating a molded resin portion 20 covering the electronic component 13 from the upper surface, a connector 21 electrically connected to the electronic component 13, and a mounting portion 22 for mounting to the motor 101.

The mounting portion 22 has: a frame 23 fixed to a peripheral edge of the aluminum substrate 10 and accommodating the electronic component 13 therein; and mounting holes 24 provided on both sides of the frame 23 so as to protrude outward.

The housing 23 is detachably attached to the motor 101 via an attachment screw (not shown) inserted into the attachment hole 24.

The mold resin portion 20 is formed by filling a coating resin in a frame 23 provided in the mounting portion 22 of the aluminum substrate 10.

Since the frame 23 is provided separately from the other members, it can be appropriately changed according to the size and mounting position of the aluminum substrate 10.

As the connector 21, a connector 21A for a motor three-phase line (U, V, W) is provided at the upper part in the figure, and a connector 21B for a command DUTY ratio (DUTY) for power supply, Ground (GND), motor drive, and motor stop, and a connector 21C for Controller Area Network (CAN) communication are provided at the lower part in the figure.

In the actuator 100 configured as described above, heat generated by the electronic component 13 can be efficiently released to the outside through the aluminum substrate 10 forming one surface of the case.

In the actuator 100, the aluminum substrate 10 may be provided with the resin member 14 in which the molded resin portion 20, the connector 21, and the mounting portion 22 are integrated, so that the electronic component 13 can be molded, the electronic component 13 can be electrically connected, and the motor 101 can be mounted/dismounted and positionally adjusted at the same time, and the motor 101 can be freely mounted/dismounted.

The driver 100 includes a frame 23 capable of accommodating the electronic component 13 as the mounting portion 22 of the resin member 14, and the frame 23 is filled with the mold resin portion 20. In addition, according to this configuration, the driver of the motor 101 and the mold resin portion 20 can be easily attached through the frame 23.

The drive 100 includes a memory in the plurality of electronic components 13, and a connector 21C capable of can (controller Area network) communication is provided as the connector 21.

In addition, according to this configuration, various data (for example, a serial number, a manufacturing process history, shipment inspection data, and the like) can be easily written/read to/from the memory in the electronic component 13 via the connector 21C.

Also, the driver 100 can efficiently drive the cooling fan 8 by serving as a control portion for driving the motor 101 of the cooling fan 8.

The actuator 100 shown in the embodiment can be modified in structure as follows.

(modification 1)

In the actuator 100, the rear surface of the aluminum substrate 10 on the opposite side of the insulating layer 11 may be colored black or a dark color close to black. In addition, with this configuration, the emissivity can be improved by the black surface of the aluminum substrate 10, and the heat dissipation property of the electronic component 13 can be further improved.

(modification 2)

In the actuator 100, the mounting holes 24 are provided on both sides of the frame 23 as the mounting portions 22, but the present invention is not limited to this, and the mounting holes 24 may be directly formed on both sides of the molded resin portion 20 without providing the frame 23.

(modification 3)

In the driver 100, as shown in fig. 6, the heat sink 30 may be provided on the back surface of the aluminum substrate 10 located on the opposite side of the insulating layer 11.

The heat sink 30 may have a structure in which a plurality of protrusions 30A are arranged in a matrix on the rear surface of the aluminum substrate 10. The protrusions 30A may be provided on the entire back surface of the aluminum substrate 10, or may be provided in an air flow region to which cooling air a from the cooling fan 8 is blown.

Further, by configuring as described above, heat can be efficiently released from the electronic component 13 through the aluminum substrate 10 and the heat sink 30.

(modification 4)

In the above-described actuator 100, the aluminum substrate 10 of the actuator 100 is disposed on the support 1 side which serves as a base of the motor 101. However, the present invention is not limited to this, and as shown in fig. 7, a substrate support member 31 may be provided on the support body 1, and the aluminum substrate 10 may be positioned on the opposite side with respect to the motor 101 via the substrate support member 31. In fig. 7, the motor 101 is disposed in a bottomed cylindrical case 50, and the support 1 closes an opening of the case 50 (the same applies to fig. 8 below).

In this case, the fins 30 may be provided on the back surface side of the aluminum substrate 10, and the cooling air a' from the fan may be guided to the fins 30.

(modification 5)

As shown in fig. 1, 3, 4, and 6, in the resin member 14 of the actuator 100, the connector 21A for the motor three-phase line (U, V, W) of the connector 21 is positioned at the upper portion of the housing 23 in the drawing.

However, the present invention is not limited to this, and as shown in fig. 9, the motor three-phase wire connector 21A' of the connector 21 may be projected from the frame 23 to the front side where the molded resin portion 20 is located.

At this time, the motor three-phase line connector 21A' of the connector 21 protrudes from the frame 23 in the forward direction in the vertical direction or the oblique direction, so that the degree of freedom of connection of the connector can be increased and the wiring layout can be freely performed.

(modification 6)

The aluminum substrate 10 may be a highly heat conductive substrate such as a ceramic substrate. The connector 21C may be Serial Peripheral Interface (SPI) communication that is a communication standard other than CAN communication, or other raw communication that is not standardized.

Further, without being limited thereto, as shown in fig. 8, the aluminum substrate 10 of the driver 100 may be disposed on the support 1 side serving as the base of the motor 101 and in the vicinity of the rotation main shaft 3. At this time, the heat of the electronic component 13 transferred to the aluminum substrate 10 may be transferred to the rear surface side through the support 1 and then discharged to the outside by the circulating air B flowing through the support 1. The circulation wind B can be sucked or exhausted through the gap 1A between the case 50 and the support 1 by the rotation of the rotor 7.

Fig. 7 and 8 are schematic configuration diagrams, and the insulating layer 11 and the copper foil layer 12 are not described.

Hereinafter, the structure and function of a plurality of (seven) Intelligent Power Devices (IPDs) will be described with respect to the unit corresponding to iDU (iDU described in paragraph [0029 ]).

First, the IPD 200 will be explained. Fig. 10 is a block diagram showing the structure of the IPD 200.

The IPD 200 is a device that can arbitrarily limit input power to the IPD and output power from the IPD.

The IPD 200 includes an input block 201, a control section 202, a pre-driver 203, a three-phase motor drive output block 204, and a protection determination logic circuit 205.

The input block 201 outputs a command for driving and stopping the motor, which is input to the input terminal 21B3, to the control unit 202 as a motor control command.

The control section 202 outputs an instruction signal to the pre-driver 203 based on a motor control instruction from the input block 201.

The pre-driver 203 outputs a drive signal to each transistor constituting the three-phase motor drive output block 204 in accordance with an instruction signal from the control unit 202, and performs on/off control of each transistor.

The three-phase motor drive output block 204 is a three-phase inverter, is connected to a connector 21B1 to which input power from a power supply (battery) is supplied, and energizes a U-phase output terminal 21a1, a V-phase output terminal 21a2, and a W-phase output terminal 21A3, which are connected to three-phase coils of the motor 101, in accordance with a drive signal from the pre-driver 203.

The protection decision logic 205 includes a memory 205a and a power operator 205 b.

The memory 205a is an electronic component capable of writing, storing, and reading a predetermined input power limit value and a predetermined output power limit value. Here, the predetermined input power limit value and the predetermined output power limit value are configured to be input by a user of the IPD 200 through the connector 21B or the connector 21C, for example.

The power calculator 205b receives the input current measured by the input current monitoring circuit 206a and the input voltage measured by the input voltage monitoring circuit 206b, and calculates the input power. The output current measured by the output current monitoring circuit 207a and the output voltage measured by the output voltage monitoring circuit 207b are input to the power arithmetic unit 205b, and the output power is calculated.

The protection determination logic 205 compares the calculated input power with a predetermined input power limit value, and outputs the input power determination result to the control unit 202. Then, the protection determination logic circuit 205 compares the calculated output power with a predetermined output power limit value, and outputs the output power determination result to the control unit 202.

When the input power determination result is that the calculated input power is not less than the predetermined input power limit value, the control unit 202 outputs, for example, an instruction signal for lowering the voltage level of the drive signal output from the pre-driver 203. Thereby, the following control can be performed: the input power to the three-phase motor drive output block 204 is brought close to a predetermined input power limit value.

When the input power determination result is that the calculated input power is less than the predetermined input power limit value, control unit 202 notifies the user that the input power has not reached the predetermined input power limit value, for example, by a warning display circuit, not shown. Thus, by resetting the predetermined input power limit value, the following control can be performed: the input power to the three-phase motor drive output block 204 is brought close to a predetermined input power limit value.

When the output power determination result is that the calculated output power is equal to or larger than the predetermined output power limit value, the control unit 202 outputs, for example, an instruction signal for lowering the DUTY ratio (DUTY) of the drive signal output from the pre-driver 203. Thereby, the following control can be performed: the output power from the three-phase motor drive output block 204 is brought close to a predetermined output power limit value.

When the output power determination result is that the calculated output power is less than the predetermined output power limit value, control unit 202 outputs, for example, an instruction signal for increasing the DUTY ratio (DUTY) of the drive signal output from pre-driver 203. Thereby, the following control can be performed: the output power from the three-phase motor drive output block 204 is brought close to a predetermined output power limit value.

Conventionally, in order to limit the current, a voltage drop of a shunt resistor is detected by a Large Scale Integration (LSI) and compared with a reference voltage, thereby limiting the current.

In contrast, the IPD 200 monitors the input current and the input voltage, and calculates the input power. The memory 205a may additionally determine (change) an arbitrary input power limit value. Similarly, by configuring the output side so as to be able to calculate the output power, the power limit of the input side power and the power limit of the output side can be selected according to the product.

That is, the power can be limited by adding a power calculation function inside the IPD 200 and feeding back the power. Further, by adding a memory function, the value of the power limit can be changed according to the request of each car manufacturer (car maker).

Next, the IPD 300 will be explained. Fig. 11 is a block diagram showing the structure of the IPD 300.

In the past, in order to perform the overheat protection, the temperature is measured by a thermistor (thermistor), the measured temperature is converted into a voltage, and the voltage is compared with a reference voltage value, thereby determining whether the overheat protection is necessary. However, in changing the thermal protection threshold as the reference voltage value, since the power supply for supplying the reference voltage value is a fixed power supply, if the fixed power supply is hardware, the hardware change is inevitable. Therefore, it is not easy to change the IPD overheat protection threshold for each car manufacturer or model. Therefore, the IPD 300 can change the overheat protection threshold value for each car manufacturer or each product model by adding a memory function.

As shown in fig. 11, the IPD 300 comprises a logic circuit + pre-driver 3025, a protection decision logic circuit 305, a memory function 305a and a temperature detection circuit 305 b.

Note that the input block 201 and the three-phase motor drive output block 204 shown in fig. 10 are omitted in fig. 11.

The logic circuit + pre-driver 3025 includes: a control unit 202 that outputs an instruction signal to the pre-driver 203 in accordance with a motor control command from the input block 201 shown in fig. 10; and a pre-driver 203 for outputting a drive signal to each transistor constituting the three-phase motor drive output block 204 in accordance with an instruction signal from the control unit 202 to perform on/off control of each transistor.

The memory function 305a is an electronic element capable of writing, storing, and reading a predetermined overheat protection threshold value. Here, the predetermined overheat protection threshold value is configured to be input by a user of the IPD 300 through the connector 21C, not shown, for example.

The temperature detection circuit 305b includes a resistor 3051, a thermistor 3052, a variable voltage circuit 3053, and a comparator 3054.

One end of the resistor 3051 is connected to a power supply terminal (the connector 21B1 shown in fig. 10), and the other end is connected to one end of the thermistor 3052 and a (-) input terminal of the comparator 3054.

One end of the thermistor 3052 is connected to the other end of the resistor 3051 and the (-) input terminal of the comparator 3054, and the other end is grounded. A thermistor (thermistor) is a resistor body whose resistance changes greatly with respect to a temperature change. This phenomenon is also used as a sensor for measuring temperature. The sensor is generally used for measurement at about-50 to 150 ℃.

The (-) input terminal of the comparator 3054 is connected to the common contact between the other end of the resistor 3051 and one end of the thermistor 3052, and a voltage detected by the thermistor 3052 (referred to as a thermistor detection voltage) is input thereto, and the (+) input terminal is connected to the variable voltage circuit 3053, and a voltage of the variable voltage circuit 3053 (a predetermined overheat protection threshold) is input thereto.

When the thermistor detection voltage ≧ a predetermined overheat protection threshold value, the comparator 3054 outputs, for example, a logic signal (determination result) that changes from L (low) level to H (high) level to the protection determination logic circuit 305.

On the other hand, when the thermistor detection voltage is less than the predetermined overheat protection threshold, the comparator 3054 outputs an L-level logic signal (determination result) to the protection determination logic circuit 305.

The protection decision logic circuit 305 waveform-shapes the decision result output from the comparator 3054, and outputs a waveform-shaped decision result signal to the logic circuit + predriver 3025.

The logic circuit + pre-driver 3025 outputs, for example, an instruction signal for decreasing the DUTY ratio (DUTY) of the drive signal output from the pre-driver 203 when the determination result signal is the thermistor detection voltage ≧ a predetermined overheat protection threshold value. Thereby, the following control can be performed: the output power from the three-phase motor drive output block 204 is reduced, and the detection voltage of the thermistor is brought close to a predetermined overheat protection threshold.

The logic circuit + pre-driver 3025 outputs an instruction signal for increasing the DUTY ratio (DUTY) of the drive signal output from the pre-driver 203, for example, when the determination result signal indicates that the thermistor detection voltage is less than the predetermined overheat protection threshold. Thereby, the following control can be performed: even if the output power from the three-phase motor drive output block 204 is increased, the detection voltage of the thermistor is brought close to a predetermined overheat protection threshold.

In the conventional IPD, as described above, in order to perform the overheat protection, the temperature is measured by the thermistor, the measured temperature is converted into a voltage, and the voltage is compared with the reference voltage value, thereby determining whether the overheat protection is necessary. However, in changing the thermal protection threshold as the reference voltage value, since the power supply for supplying the reference voltage value is a fixed power supply, if the fixed power supply is hardware, the hardware change is inevitable. Therefore, it is not easy to change the IPD overheat protection threshold for each car manufacturer or model.

Therefore, the IPD 300 can change the overheat protection threshold value for each car manufacturer or each product model by adding a memory function.

Next, IPD 400 will be explained. Fig. 12 is a block diagram showing the structure of the IPD 400.

In the conventional IPD, the function of the control unit is specialized for a specific motor (for example, a fan motor), and thus the IPD cannot be applied to other motors. For example, the IPD cannot be applied to an oil pump because the fan motor is slowly started as a function of the control unit, but the oil pump (oil pump) must be quickly started. In this way, the motors to which the IPD is applicable are limited, and thus the number advantage in manufacturing cannot be exerted, which causes a problem that the cost cannot be reduced.

Therefore, the IPD 400 can be applied to various motors by adding a memory function, and thus the number advantage of manufacturing the same IPD can be easily obtained.

As shown in fig. 12, the IPD 400 includes a control section 402, a pre-driver 403, a power device 404 and a memory function 405 a.

In addition, the input block 201 shown in fig. 10 is omitted in fig. 12.

The control unit 402 outputs an instruction signal to the pre-driver 403 based on a motor control command from the input block 201 shown in fig. 10.

The pre-driver 403 outputs a drive signal to each transistor constituting the power device 404 in accordance with an instruction signal from the control unit 402, and performs on/off control of each transistor.

The power device 404 is a three-phase inverter, and energizes the U-phase output terminal 21a1, the V-phase output terminal 21a2, and the W-phase output terminal 21A3, which are connected to the three-phase coil of the motor 101, in accordance with a drive signal from the pre-driver 403.

The memory function 405a is an electronic component capable of writing, storing, and reading setting data for selecting a predetermined function. Here, the setting data for selecting the predetermined function is configured to be input by the user of the IPD 400 through the connector 21B4, for example.

In the present embodiment, the setting data includes two types, i.e., function ON (ON) and function OFF (OFF). As shown in fig. 12, the memory function 405a outputs a function OFF (OFF) to the control unit 402 and the pre-driver 403, so that the power device 404 operates in the first energization mode, and energizes the U-phase output terminal 21a1, the V-phase output terminal 21a2, and the W-phase output terminal 21A3, which are connected to the three-phase coil of the motor 101.

ON the other hand, when the memory function 405a outputs a function ON (ON) to the control unit 402 and the pre-driver 403, the power device 404 operates in the second energization mode, and energizes the U-phase output terminal 21a1, the V-phase output terminal 21a2, and the W-phase output terminal 21A3, which are connected to the three-phase coil of the motor 101.

Here, in the first energization mode, the control unit 402 outputs a first instruction signal for setting, for example, a DUTY ratio (DUTY) of a drive signal output from the pre-driver 403 to a predetermined DUTY ratio (DUTY). Thereby, the following control can be performed: the output power from the power device 404 is brought close to a predetermined output power value (here, the motor 101 is slowly started).

In the second power-on mode, the control unit 402 outputs, for example, an instruction signal for increasing the DUTY ratio (DUTY) of the drive signal output from the pre-driver 403. Thereby, the following control can be performed: the output power from the power device 404 is brought close to an output power value larger than the predetermined output power value in the first energization mode (here, the motor 101 is rapidly started).

In the conventional IPD, as described above, the function of the control unit is specialized for a specific motor (for example, a fan motor), and thus the IPD cannot be applied to other motors. For example, the IPD cannot be applied to an oil pump because the fan motor is slowly started as a function of the control unit, but the oil pump must be quickly started. In this way, there is a problem that the number of motors to which the IPD is applied is limited, and the cost cannot be reduced because the number advantage in manufacturing is not exhibited.

Therefore, the IPD 400 can be applied to various motors by adding a memory function, and thus the number advantage of manufacturing the same IPD can be easily obtained.

Next, IPD 600 will be explained. Fig. 13 is a block diagram showing the structure of IPD 600.

In the conventional IPD, only a fixed setting (for example, 5Hz to 80Hz) can be made with respect to the command pulse input frequency. In addition, between an Electronic Control Unit (ECU) on the vehicle and the IPD, a frequency range is determined as 25Hz ± 2Hz, for example, taking the company a specification as an example of the command pulse specification. However, since the setting of the command pulse on the IPD side is fixed as described above (for example, 5Hz to 80Hz), if the command of the host ECU is, for example, 50Hz which is the specification of another company, the "frequency range 25Hz ± 2 Hz" which is the specification of the command pulse determined between the host ECU and the IPD in the vehicle is deviated.

However, since the command of the upper ECU is in a range of a fixed setting (for example, 5Hz to 80Hz) as a command pulse input frequency, the system (IPD) cannot be determined to be abnormal and operated. For example, as a result, the IPD continues to operate even in an abnormal state, and thus, when the fan motor is driven, the engine cooling is excessive, and the vehicle fuel consumption is reduced.

Further, since the command pulse input frequency differs for each automobile manufacturer, the command pulse specification must be set for each automobile manufacturer, and development of a derivative model cannot be performed.

Therefore, the IPD 600 can change the command pulse input frequency by adding a memory function.

As shown in fig. 13, the IPD 600 includes an input circuit 601, an instruction range determination circuit 605 and a memory function 605 a.

Note that the control unit 202, the pre-driver 203, and the three-phase motor drive output block 204 shown in fig. 10 are omitted in fig. 13.

The input circuit 601 corresponds to the input block 201 shown in fig. 10, and outputs a command pulse input frequency, which is a command from the upper ECU 650 and is input to the input terminal 21B3, to the command range determination circuit 605 as a motor control command.

The command range determination circuit 605 outputs the motor control command to the control unit 202 shown in fig. 10 when the command pulse input frequency input as the motor control command is within the command range set in the memory function 605 a.

The control unit 202 outputs an instruction signal to the pre-driver 203 shown in fig. 10 based on a motor control instruction from the instruction range determination circuit 605.

The pre-driver 203 outputs a drive signal to each transistor constituting the three-phase motor drive output block 204 shown in fig. 10 in accordance with an instruction signal from the control unit 202, and performs on/off control of each transistor.

Here, the command pulse input frequency is a value indicating the frequency of the drive signal (command pulse). The pre-driver 203 varies the DUTY ratio (DUTY) of the drive signal within a range of 0% to 100% in accordance with an instruction signal from the control unit 202. Here, the DUTY ratio (DUTY) is defined as a period of the H level of the driving signal/a period of the driving signal (i.e., the period of the H level of the driving signal × one frequency of the driving signal).

The pre-driver 403 determines the frequency and DUTY ratio (DUTY) of the drive signal based on the instruction signal from the control unit 202, outputs the drive signal to each transistor constituting the three-phase motor drive output block 204, and performs on/off control of each transistor.

The memory function 605a is set with a command range obtained by adding a predetermined upper limit/lower limit (for example, ± 8%) to the command pulse specification of each automobile manufacturer. Here, as shown in fig. 13, a connector 21B4 is provided in order to select the set command range. The user can select any of the instruction ranges via the connector 21B 4.

The command range determination circuit 605 outputs the motor control command to the control unit 202 when the command pulse input frequency input as the motor control command is within the selected command range.

The control unit 202 outputs an instruction signal to the pre-driver 203 based on a motor control instruction from the instruction range determination circuit 605.

The pre-driver 203 determines the frequency and DUTY ratio (DUTY) of the drive signal based on the instruction signal from the control unit 202, outputs the drive signal to each transistor constituting the three-phase motor drive output block 204, and performs on/off control of each transistor.

In the conventional IPD, as described above, the setting of the received command pulse is fixed, and therefore, the IPD cannot be determined to be abnormal and operated even if the IPD deviates from the command range. In contrast, in the IPD according to the present embodiment, the IPD 600 that is not intended to be operated in the abnormal state can jump to the operation (fail safe) in the abnormal state. For example, when the input frequency of the command pulse input as the motor control command is not within the command range set in the memory function 605a, the command range determination circuit 605 outputs to the control unit a command signal such that the DUTY ratio (DUTY) of the drive signal is close to 0% without changing the frequency indicated by the motor control command, and brings the motor into a state close to a stop.

In addition, in the conventional IPD, the command pulse standard must be set for each automobile manufacturer, and development of a derivative model cannot be performed. In the IPD 600, the command pulse specification of each automobile manufacturer is set in advance in the memory, so that the response becomes easy and the versatility increases.

That is, the IPD 600 can change the command pulse input frequency by adding a memory function to the IPD.

Next, IPD 700 will be explained. Fig. 14 is a block diagram showing the structure of IPD 700.

The IPD 700 is a device in which 12V and 48V specifications are changed by adding a memory function to the IPD using one piece of hardware.

The IPD 700 includes a 12V/48V common power supply circuit 706, an input block 701, a control section 702, a 12V/48V variable pre-driver 703, a 12V/48V common three-phase motor drive output block 704, a protection function circuit 705, and a memory function 705 a.

The input block 701 outputs a command for motor driving or motor stopping, which is input to the input terminal 21B3, to the control section 702 as a motor control command.

The control unit 702 outputs an instruction signal to the 12V/48V-system variable predriver based on a motor control command from the input block 701.

The 12V/48V-based variable pre-driver 703 outputs a drive signal to each transistor constituting the 12V/48V-based common three-phase motor drive output block in accordance with an instruction signal from the control unit 702, and performs on/off control of each transistor.

The 12V/48V-system common three-phase motor drive output block 704 is a three-phase inverter, is connected to a 12V/48V-system common power supply circuit 706 connected to a connector 21B1 to which input power from a power supply (battery) is supplied, and energizes a U-phase output terminal 21a1, a V-phase output terminal 21a2, and a W-phase output terminal 21A3 connected to a three-phase coil of the motor 101 in accordance with a drive signal from the pre-driver 203.

The protection function circuit 705 is connected to the memory function 705 a.

The memory function 705a is an electronic element capable of writing, storing, and reading a 12V/48V overcurrent detection threshold value and a hysteresis (hysteresis) value corresponding to a difference between the 12V and 48V overcurrent detection threshold values. Here, the threshold value of the overcurrent detection of the 12V/48V system and the hysteresis value of the overcurrent detection of the 12V system and the 48V system are configured to be input by the user of the IPD 700 through the connector 21B or the connector 21C, for example. The memory function 705a is an electronic component capable of writing, storing, and reading a threshold value for overvoltage detection of 12V/48V system and a hysteresis value corresponding to a difference between the threshold values for overvoltage detection of 12V system and 48V system.

The memory function 705a is an electronic element capable of writing, storing, and reading a threshold value for low voltage detection of the 12V/48V system and a hysteresis value corresponding to a difference between the threshold values for low voltage detection of the 12V system and the 48V system. The memory function 705a is an electronic component capable of writing, storing, and reading a threshold value for power limit detection of the 12V/48V system and a hysteresis value corresponding to a difference between the threshold values for power limit detection of the 12V system and the 48V system.

The memory function 705a outputs, to the protection function circuit 705, operation voltage data indicating which voltage system of the 12V and 48V the IPD 700 operates at, thresholds (an overvoltage detection threshold, an overcurrent detection threshold, a low voltage detection threshold, and a power limit detection threshold) used in the 12V system detection, and hysteresis values (values corresponding to differences between the overvoltage detection threshold, the overcurrent detection threshold, the low voltage detection threshold, and the power limit detection threshold of the 48V system and the 12V system).

When the IPD 700 switches from the 12V system to the 48V system or from the 48V system to the 12V system, the memory function 705a outputs a second instruction signal associated with the switching to the 12V/48V system variable pre-driver 703. The memory function 705a outputs a drive signal corresponding to the 12V system or the 48V system to each transistor constituting the 12V/48V system common three-phase motor drive output block 704 in synchronization with an instruction signal from the control unit 702, and controls on/off of each transistor, for the 12V/48V system variable pre-driver 703.

For example, when the operating voltage data input from the memory function 705a indicates 12V, the protection function circuit 705 compares the voltage value (voltage detection value) measured by the voltage measurement unit provided between the 12V/48V-based common three-phase motor drive output block 704 and the 12V/48V-based common power supply circuit 706 with the magnitude of the overvoltage detection threshold value used for the 12V-based detection input from the memory function 705a as follows, and outputs the overvoltage detection determination result to the control unit 202.

When the overvoltage detection determination result is that the voltage detection value is ≧ the overvoltage detection threshold value, the control unit 202 outputs, for example, an instruction signal that decreases the DUTY ratio (DUTY) of the drive signal output by the pre-driver 203. This makes it possible to control the voltage detection value to approach the overvoltage detection threshold value.

Then, when the output power determination result is that the voltage detection value is less than the overvoltage detection threshold value, the control unit 202 outputs, for example, an instruction signal for increasing the DUTY ratio (DUTY) of the drive signal output from the pre-driver 203. This makes it possible to control the voltage detection value to approach the overvoltage detection threshold value.

On the other hand, when the operating voltage data input from the memory function 705a indicates 48V, for example, the protection function circuit 705 compares the voltage detection value measured by the voltage measurement unit with the overvoltage detection threshold value and the hysteresis value used in the 12V-series detection input from the memory function 705a as follows, and outputs the overvoltage detection determination result to the control unit 202.

When the overvoltage detection determination result is voltage detection value ≧ or ≧ (overvoltage detection threshold value + hysteresis value), the control unit 202 outputs, for example, an instruction signal that decreases the DUTY ratio (DUTY) of the drive signal output by the predriver 203. This makes it possible to control the voltage detection value to approach the overvoltage detection threshold value.

When the output power determination result is that the voltage detection value < (overvoltage detection threshold value + hysteresis value), control unit 202 outputs, for example, an instruction signal for increasing the DUTY ratio (DUTY) of the drive signal output from pre-driver 203. This makes it possible to control the voltage detection value to approach the overvoltage detection threshold value.

Conventionally, IPD is designed as hardware dedicated to a 12V power supply, and cannot cope with a 48V power supply which has started to be handled in europe, and it is necessary to reset other hardware.

In contrast, IPD 700 requires no separate study for the conventional 12V system and the european 48V system. For example, the threshold value for overvoltage detection (overvoltage detection threshold value) and the hysteresis value may be set and changed to 12V/48V. Further, the threshold value (overcurrent detection threshold value) and hysteresis value for overcurrent detection, the threshold value (low voltage detection threshold value) and hysteresis value for low voltage detection, and the threshold value (power limit detection threshold value) and hysteresis value for power limit detection may be set and changed to 12V/48V.

That is, by adding the IPD 700 memory function, the 12V standard and the 48V standard can be changed by one hardware.

Next, IPD 800 will be explained. Fig. 15 is a block diagram showing the structure of IPD 800. Fig. 16 is a diagram showing an overlapping variable rectangular wave conduction pattern output from the IPD 800.

IPD 800 is a device for muting the volume generated when motor 101 rotates, which is the target to which IPD 800 is energized.

The IPD 800 comprises an input block 801, a control section 802, a pre-driver 803 and a three-phase motor drive output block 804.

The input block 801 outputs a command for motor driving and motor stopping, which is input to the input terminal 21B3, to the control unit 802 as a motor control command.

The control section 802 outputs an instruction signal to the pre-driver 803 based on a motor control instruction from the input block 801.

The pre-driver 803 outputs a drive signal to each transistor constituting the three-phase motor drive output block 804 in accordance with an instruction signal from the control unit 802, and performs on/off control of each transistor.

The three-phase motor drive output block 804 is a three-phase inverter, is connected to a connector 21B1 (not shown in fig. 15) to which input power from a power supply (battery) is supplied, and energizes a U-phase output terminal 21a1, a V-phase output terminal 21a2, and a W-phase output terminal 21A3 connected to a three-phase coil of the motor 101 in accordance with a drive signal from the pre-driver 803.

The control unit 802 includes a memory 802 a.

The memory 802a is an electronic element that can write, store, and read a predetermined overlap (hereinafter referred to as a variable overlap). Here, the predetermined overlap is configured to be input by a user of IPD 800 through connector 21B or connector 21C, for example.

The overlap is a period in which, for example, the H level of the U-phase output overlaps with the H level of the W-phase output and the H level of the V-phase output. In the past, in the case of 150 ℃ rectangular wave energization, the overlap was fixed, for example, at 15 °. However, since the memory 802a stores variable overlaps, in the case of 150 ℃ rectangular wave current, the overlaps can be made variable between 0 ° and 75 °, and can be set to a value that enables the variable overlaps to be most muted.

The control section 802 outputs an instruction signal containing the variable overlap to the pre-driver 803.

The pre-driver 803 outputs, in accordance with an instruction signal from the control unit 802, drive signals for causing the three-phase motor drive output block 204 to energize the U-phase output terminal 21a1, the V-phase output terminal 21a2, and the W-phase output terminal 21A3 connected to the three-phase coil of the motor 101 in accordance with the rectangular wave energization pattern shown in fig. 16.

Thus, the IPD 800 can perform energization of each phase by a rectangular wave energization pattern for muting.

In the conventional IPD, when a three-phase rectangular wave conduction method is selected for motor driving, for example, rectangular wave conduction at 150 ℃ is desired if the object is to mute. The IPD in the related art is an actuator for energizing the overlapping of fixed patterns, and the overlapping amount can be set only to be fixed (for example, 15 °), and the effect of muting cannot be optimized.

In contrast, IPD 800 can be set with an optimum mute by adding a memory function and changing the amount of overlap according to the motor specification.

That is, in the IPD 800, by adding a memory function to the IPD, the overlap can be set from a fixed setting to a variable setting.

Next, IPD 900 will be explained. Fig. 17 is a block diagram showing the structure of IPD 900. In fig. 17, an ASSEMBLY (ASSEMBLY)910 with IPD 900 as a part is shown.

In a conventional module (assist system), since a control unit (on/off control) of an upper power system relay is not provided, the upper power system relay is controlled by an upper ECU. That is, the upper ECU controls all of the plurality of power system relays used when electric power is supplied from the power source (battery) to the motor.

In this configuration, the host ECU must have a plurality of functions, and particularly in the case of a high-function ECU such as an engine ECU, relay control is expected to be a burden.

Therefore, in the ASSEMBLY (ASSEMBLY)910, a relay drive circuit and a memory function are added to the IPD, and the purpose is to control the upper power system relay (on/off).

As shown in fig. 17, IPD 900 includes memory function 905a, failsafe function 905b, and relay driver 906.

The upper ECU950 also includes a relay drive circuit 950 a.

The power source 960 supplies power to the motor via a power supply bus including the precharge relay 921 and the connector 21B11 of the module (ASSEMBLY) 910. The power source 960 supplies power to the motor via a power supply bus including the upper power system relay 922 and the connector 21B12 of the module (ASSEMBLY) 910.

Here, the relay drive circuit 950a of the host ECU950 outputs a first control signal at H/L to control on/off of the precharge relay 921.

The relay driver circuit 906 of the IPD 900 outputs a second control signal at H/L to control on/off of the upper power system relay 922.

Thus, since the upper power system relay controlled by the upper ECU950 is changed from two (the pre-charge relay 921 and the upper power system relay 922) to one (the pre-charge relay 921), the control function of the upper power system relay of the upper ECU can be reduced in the vehicle design of the automobile manufacturer, and as a result, the load on the upper ECU can be reduced.

Further, by introducing the relay drive circuit 906 and the memory function 905a having a relay control function into the IPD 900, the module (ASSEMBLY)910 can control the upper power system relay 922 (on/off) at an arbitrary timing. The upper power system relay 922 may be turned off at any timing, for example, when fail-safe is performed.

In this way, by combining with the fail-safe function 905b to completely block the power supply to the motor, a safer protection state can be formed. In order to completely block the power supply to the motor, the relay drive circuit 950a of the upper ECU950 needs to turn off the precharge relay 921, and therefore, a communication signal for notifying the upper ECU950 of turning off the upper power system relay 922 is output at the time of the fail-safe.

However, it is desirable that the upper power system relay is not turned off at the time of all fail-safe, but is preset by the memory function 905a so that relay control (on/off) setting can be visually made for each fail-safe item.

In the conventional module (assist) as described above, it is necessary to provide the upper ECU with a plurality of functions, and particularly in the case of a high-function ECU such as an engine ECU, relay control is expected to be a burden. Therefore, in the ASSEMBLY (ASSEMBLY)910, a relay driver circuit 906 and a memory function 905a are added to the IPD 900, and the upper power system relay 922 can be controlled (on/off).

Thus, the control function of the upper power system relay 922 of the upper ECU950 can be reduced in the vehicle design of the automobile manufacturer, and as a result, the load on the upper ECU950 can be reduced.

The structure and function of seven IPDs (IPD 200, IPD 300, IPD 400, IPD 600, IPD 700, IPD 800, IPD 900) have been described above, and the structure and function of two iDU 120, iDU 130 as a modification of the iDU are described below.

First, iDU 120 will be explained.

In the conventional iDU, it takes time to identify a defective product returned due to a market defect or the like. This is because the analysis order until the cause is specified is many.

Further, there is a case where information such as deterioration of the product state due to a poor operation mode when a defective product is taken out from a vehicle is not mentioned.

In iDU 120, failure information such as overcurrent, overvoltage, overheat, and low voltage is stored in the memory in iDU 120, so that the approximate cause of the failure can be confirmed at the timing of starting the analysis.

Further, there are left abnormalities in the vehicle environment such as shocks, vibrations, dropping (for example, as viewed by a gyro sensor), vehicle speed abnormalities (for example, as viewed by pressure at wind speed), detection of water infiltration, and the like.

Thus, iDU 120 has a structure in which various types of failure information are left in the memory and can be read out.

Thus, iDU 120, the cause of failure of a product returned due to a market defect or the like can be confirmed by reading the information in the memory. Further, since the operation mode may be rough (impact or drop is applied) when the defective product is taken out from the vehicle, if failure of the impact or drop is confirmed in the memory information, the defective product can be distinguished from the defective product at the time of the failure analysis. Also, the car manufacturer or primary supplier (Tire1) (the manufacturer who directly supplies parts to the finished car manufacturer) can be notified as soon as possible.

Finally, iDU 130 will be explained. Fig. 18 is a block diagram showing the structure of iDU 130.

As threats to the safety of automobiles, various risks such as theft of automobile functions, remote control, and a concomitant loss of life are assumed.

In recent years, events and accidents threatening information security caused by in-vehicle electronic devices have been confirmed, and it is required to strengthen information security. Events or incidents that threaten the security of information mostly exploit the vulnerability of software.

iDU, the memory is assumed to be written or read by CAN communication, and both hardware and software measures are required from the viewpoint of information security.

Therefore, in iDU 130, the memory 134 implements security enforcement by taking measures against both hardware and software.

As a hardware countermeasure, memory access is physically restricted by a short pin (short pin), a voltage input terminal, or the like. That is, as shown in fig. 18, a short-circuit line is arranged in advance between the short-circuit pin (connector 21C1) and the voltage input terminal (connector 21B 2). In fig. 18, the short-circuit line is disposed outside iDU 130, but may be disposed inside iDU 130.

The memory write/read device 131 is a circuit included in the circuit iDU 130, and includes a short detection circuit 132, a communication input/output circuit 133, and a memory 134.

When the connector 21B2 generates noise, the short-circuit detection circuit 132 outputs a detection signal indicating that the noise is detected to the communication input/output circuit 133.

Thus, the communication input/output circuit 133 prohibits the exchange (input/output) of the data stored in the memory 134 with the outside via the communication pin (connector 21C). In the period in which the detection signal is not input, the exchange of the data stored in the memory 134 with the outside via the connector 21C is not inhibited and can be performed.

As a hardware countermeasure, memory access is physically restricted.

As a software countermeasure, operation restriction is set by encrypting communication information or the like so that improper access cannot be performed.

In other words, iDU 130 takes measures in both software and hardware, thereby achieving security enhancement more than before.

While the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to the embodiments, and design changes and the like that do not depart from the scope of the present invention are also included.

For example, in the above embodiment, the motor 101 is described as a fan motor, for example. However, the present invention is not limited to this, and the motor 101 may be used for various purposes without the cooling fan 8 from the motor 101. Accordingly, the actuator 100 can be used for various motors 101.

Description of the symbols

1: support body

2: bearing component

3: rotating spindle

4: winding wire

5: stator

6: rotor magnet

7: rotor

8: fan with cooling device

10: aluminum substrate

10A: aluminium layer

10B: insulating oxide film

11: insulating layer

12: copper foil layer

13: electronic component

14: resin member

20: molded resin part

21: connector with a locking member

22: mounting part

23: frame body

24: mounting hole

30: heat sink

100: driver

101: motor with a stator having a stator core

A: cooling air

A': cooling air

B: circulating wind

120、130：iDU

200、300、400、600、700、800、900：IPD

201. 701 and 801: input block

202. 402, 702, 802: control unit

203. 403, 803, 3025: predriver

204. 804: three-phase motor driving output block

205. 305: protection decision logic circuit

305a, 405a, 605a, 705a, 905 a: memory function

134. 205a, 802 a: a memory.