KR20200083739A - A motor driving system of 3-phase variable winding with themal energy harvesting function and integrated with a switch block of electromagnetic selection - Google Patents

Abstract

The present invention relates to a motor driving system of a thermal power generation-loaded three-phase variable coil structure with an integrated electromagnetic shift switch block. The motor driving system comprises: a battery to supply DC power; a motor to drive a driving wheel of an electric vehicle; a switch block consisting of a plurality of switches installed on a coil of the motor to convert coil connection; and an inverter which has a switching circuit consisting of a switching element, and transfers a three-phase output voltage to the coil of the motor by turning on/off operations of the switching element when DC power is supplied from the battery. The inverter includes: a switching element die module including a circuit board and a plurality of switching elements formed on the circuit board; a heat radiation plate attached to both the upper and lower sides of the switching element die module; a heat sink connected to the heat radiation plate; and a thermal power generation module formed between the heat radiation plate and the heat sink. According to the motor driving system, a motor driving system of a multi-stage variable structure of a thermal power generation-loaded switching property is introduced to alleviate a problem in which optimal driving efficiency cannot be obtained in accordance with a vehicle driving condition in a condition of a coil-fixed motor of an electric vehicle in accordance with a conventional technique, and recycle energy discarded as heat.

Description

A motor driving system of 3-phase variable winding with themal energy harvesting function and integrated with a switch block of electromagnetic selection}

The present invention consists of a thermal power generation unit and a heat dissipation unit combined with a power switching unit and a thermoelectric element for a power conversion converter and inverter mounted on a vehicle when driving an electric vehicle to perform voltage conversion and motor driving, and generated in a switching module during operation It relates to a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, which converts the heat generated from the electrical power generation module into electrical energy.

As global warming due to air pollution rapidly progresses, various countermeasures are being made to improve the warming. In particular, countermeasures to suppress the generation of carbon dioxide, which causes air pollution, have been regulated even for vehicles operated by fossil fuels. As one of these countermeasures, it has been proposed to increase the efficiency of the vehicle's power driving system or reuse the wasted energy.

In general, an electric vehicle can be driven only with power supplied from a battery. Most electric vehicles are configured in such a way that the vehicle is driven by a converter and an inverter, and the converter and the inverter use power supplied from a battery [Patent Document 1]. In addition, it is also possible to operate an electric vehicle by a hybrid type structure combined with an engine, but a converter and an inverter are also combined to drive the vehicle.

On the other hand, the power conversion converter and the motor-driven inverter mounted in the electric vehicle generate heat intensively in the inverter and the switching element mounted inside the converter when driving. In order to remove the heat generated in this way, a motor-driven pump is applied to perform heat dissipation using a water cooling method or heat dissipation using an air cooling method [Patent Document 2].

However, power is consumed again while performing the heat dissipation. The structure for dissipating heat generated when performing the heat dissipation consists of a simple structure of a single material using an aluminum heat sink or the like. Therefore, it is a structure that performs heat dissipation while using a power source in all driving conditions, so it is not possible to efficiently use a heat source. That is, all heat generated in the driving system of the electric vehicle is wasted.

Therefore, in order to solve this problem, there is a need for a technique for designing a system for using heat generated from an electric vehicle converter and an inverter switching element in real time while the electric vehicle is running. That is, there is a need for a technology that converts the heat generated in the operation process of the electric vehicle into the converter, which is the main energy source of the electric vehicle.

[Patent Document 1] Korean Registered Patent No. 10-1656590 (Announcement on September 09, 2016) [Patent Document 2] Korean Patent Publication No. 10-2018-0132280 (published on December 12, 2018)

An object of the present invention is to solve the problems as described above, in order to convert the heat generated in the switching element into electrical energy, switching in the converter and the inverter, power conversion switching for power conversion and motor driving Provided is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block-integrated thermal power generation, consisting of a module unit, a thermoelectric power generation unit composed of elements that convert heat to electricity, and a heat dissipation unit for cooling generated heat. Is to do. In particular, it is to provide an applicable electric vehicle motor system having a variable structure.

That is, an object of the present invention is to change the heat inside the converter and the inverter to electricity, which is the main energy source of the electric vehicle, in order to use the heat generated by the electric vehicle converter and the inverter switching element in real time during the operation of the electric vehicle of the electric multi-stage transmission structure. , It is to provide a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation.

In particular, the object of the present invention is a switching module unit for performing power conversion switching for power conversion and motor driving inside a converter and an inverter, a thermoelectric power generation unit in which elements that convert heat to electricity are gathered, while radiating generated heat. It is to provide a motor drive system of a three-phase winding variable structure with an electromagnetic transmission switch block integrated thermal power generation, which is composed of a heat dissipation unit capable of generating temperature deviations at both ends of the power generation unit.

In addition, the object of the present invention is composed of a material and a current connection pattern of a power connection portion connecting a thermoelectric power generation unit and a switching module, a material of a thermoelectric power generation unit and a heat radiation unit, and a power connection pattern, mounted with an electromagnetic transmission switch block integrated thermoelectric power generation 3 It is to provide a motor drive system having a variable phase winding structure.

In order to achieve the above object, the present invention relates to a motor drive system having a variable-speed three-wire winding structure equipped with an electromagnetic transmission switch block integrated thermal power generation, a battery for supplying DC power; A motor that drives the driving wheels of the electric vehicle; A switch block installed on the winding of the motor and composed of a plurality of switches for converting the winding connection; And an inverter that includes a switching circuit composed of a switching element, and when DC power is supplied from the battery, outputs a three-phase output voltage to the winding of the motor by an on/off operation of the switching element. , The inverter includes: a switching element die module including a ceramic substrate (or metal PCB) and a plurality of switching elements formed on the ceramic substrate (or metal PCB); A heat sink attached to both the upper side and the lower side of the switching element die module; A heat sink (or water-cooled heat sink) connected to the heat sink; And a thermoelectric power module formed between the heat sink and the heat sink.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, wherein the switching element is formed of a bare die element and is attached by soldering with the ceramic substrate or metal substrate. .

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block-integrated thermal power generation, wherein the inverter further comprises a heat transfer connector for generating thermoelectric power by connecting the heat sink and the heat sink. Is done.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic power switch block integrated thermal power generation, a bonding portion for solder is formed on the lower surface of the bare die element of the switching element, and a lower ceramic substrate (or Metal PCB) is connected to a solder pad (hereinafter, a lower solder pad), and after the bare die element is fixed to the lower solder pad, the wire is bonded to the bonding portion for the wire formed on the upper surface of the bare die element, and the wire is bonded. After that, it is characterized in that the bonding portion for solder formed on the upper surface of the bare die device is connected through soldering with a metal PCB solder pad (hereinafter, an upper solder pad) of an upper ceramic substrate or a metal substrate.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, a bonding portion for solder is formed on the lower surface of the bare die element of the switching element, and a ceramic substrate or metal underneath through a cream solder. It is connected to a metal PCB solder pad (hereinafter, a lower solder pad) of the substrate, and after the bare die element is fixed to the lower solder pad, the wire is bonded to the bonding portion for the wire formed on the upper surface of the bare die element, and the wire is bonded. After that, a clip type solder pad is attached to the bonding portion for solder formed on the upper surface of the bare die device, and a metal PCB solder pad of an upper ceramic substrate or a metal substrate (hereinafter, an upper solder pad) is attached to the upper side of the clip type solder pad. It is characterized by being connected through soldering.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, wherein the switch block includes a switch on each of the three-phase windings of the motor, and independently corresponds to each phase of the motor. The switch block is controlled by turning on/off, wherein the switch block, for each of the three phases of the motor, connects two windings in each phase in parallel and has a first switch in each phase at the rear end of the first winding in each phase, A third switch of each phase is provided at the front end of the second winding of each phase, a portion between the rear end of the first winding of each phase and the first switch front of each phase, the front end of the third winding of each phase and the rear end of the third switch of each phase It is characterized by having a second switch on each phase on the line connecting the inter-portion.

In addition, the present invention relates to a motor driving system having a variable structure of a three-phase winding mounted with thermal power generation integrated with an electromagnetic shift switch block, which receives power from a battery through a DC/DC converter, or is connected directly from a battery to change a winding that drives a vehicle. It is characterized by including a structure motor, a motor-driven thermoelectric-mounted inverter that generates a driving output, and a variable heat-generating switch block inserted between the drive inverter and the motor to change the winding structure of the motor.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, comprising a variable structure winding motor, a switch module for thermal power generation for switching the motor winding, and a connection structure for a thermal power generation inverter. However, the structure of the switch and the motor winding of the switch block connected to the motor independently controls each phase of the three phases of the motor, and one phase switching action of the three phase motor influences the current on the other phase where switching does not occur. It is characterized by configuring a switching connection structure that can minimize the.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, in order to stably switch the multi-stage variable structure for driving an electric vehicle in multiple stages, with at least one battery that supplies power. A configured battery pack; A motor drive inverter generating an output driving the motor for driving the electric vehicle with electric power supplied from a battery of the electric vehicle; A switch block for changing the winding structure of the motor; And a three-phase motor having a variable structure in which windings are switched by the switch block, and the inverter and the battery have a water-cooled connection structure of a circulation structure.

In addition, the present invention relates to a motor drive system having a variable-speed three-wire winding structure equipped with an electromagnetic transmission switch block integrated thermal power generation, a battery for supplying DC power; A motor that drives the driving wheels of the electric vehicle; A switch block installed on the winding of the motor and composed of a plurality of switches and thermoelectric element combinations for converting the winding connection; And a switching circuit composed of a switching element. When a DC power is supplied from the battery, a thermoelectric power generation inverter that transmits a three-phase output voltage to a winding of the motor by an on/off operation of the switching element. ; And, it characterized in that it comprises a motor winding switching switch control section for sensing the current of the motor to selectively turn on / off the switches of the switch block.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, wherein the motor is configured by integrating each switch of the switch block into a winding in the motor, and separating it from the inverter. , It forms a connection structure for connecting the three-phase output of the inverter and the three-phase input of the motor to combine.

In addition, the present invention is a motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation, wherein the switch block includes a switch on each of the three-phase windings of the motor, and independently corresponds to each phase of the motor It is characterized by controlling the switch on/off.

In addition, the present invention is a three-phase winding variable-structure motor drive system equipped with an electromagnetic transmission switch block integrated thermal power generation, wherein the switch of the switching block is a thyristor element-based module or transistor that changes the winding structure to a three-phase inverter, respectively. It is characterized by combining a variable switching module of the field (FET, BJT) and a thermoelectric generator.

As described above, according to the motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated thermal power generation according to the present invention, by introducing a multi-stage variable structure motor driving system having a switching characteristic equipped with thermoelectric power, according to the prior art, In the condition of the fixed motor of the winding of the electric vehicle, the problem that the optimum driving efficiency cannot be obtained according to the driving condition of the vehicle can be improved, and the effect of recycling energy that is wasted as heat is obtained.

In addition, the present invention has the same drive power line as the previous inverter system because the motor drive output of the integrated structure has only three drive power lines as in the conventional motor. In addition, the switches of the switch blocks existing therein receive on/off signals of each switch transmitted from the inverter to control each switch in an isolated manner.

1 is a block diagram showing the configuration of a motor drive system of an electric vehicle according to an embodiment of the present invention.
Figure 2 is a configuration diagram for the electrical external connection of the self-heated power generation inverter, the self-heated power generation switch block, and the variable structure motor of the motor drive system according to an embodiment of the present invention.
Figure 3 is a structural diagram of a motor-driven inverter switching circuit composed of a self-heating combined IGBT or TR according to an embodiment of the present invention.
4 is a block diagram of an electrical connection circuit of a switch block having a variable structure motor according to an embodiment of the present invention, and an electric drive inverter, and a high number of switches (three or more) for performing a connection between a motor and an inverter.
5 is a circuit diagram for the internal connection configuration of the switching block according to an embodiment of the present invention (a circuit diagram for the internal switch SW, (a) 2,5,8 ON, other OFF), (b) Diagram of current flow according to the internal connection configuration (2,5,8 of the internal switches (SW) OFF, other ON) of the switching block.
Figure 6 is an exemplary view showing the configuration of the switching device die module 110 of the inverter according to an embodiment of the present invention.
7 is a perspective view of a heat dissipation power module mounted on an inverter or switching element die module according to an embodiment of the present invention.
8 is a cross-sectional view of a heat dissipation power module mounted on an inverter or switching element die module according to an embodiment of the present invention.
9 is a block diagram of a switching element die module and a heat dissipation power module according to an embodiment of the present invention.
10 is a (a) plan view and (b) a rear view of a switching die bare device according to an embodiment of the present invention.
11 is a combined structure diagram of a switching element die module and a heat dissipation power module according to the first embodiment of the present invention.
12 is a combined structure diagram of a switching element die module and a heat dissipation power module according to a second embodiment of the present invention.

Hereinafter, specific contents for carrying out the present invention will be described in accordance with the drawings.

In describing the present invention, the same parts are denoted by the same reference numerals, and repeated explanation is omitted.

First, the configuration of the motor drive system of the three-phase winding variable structure equipped with an electromagnetic power transmission switch block integrated thermal power generation according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. A multi-stage variable structure is applied to the motor drive system.

1, the motor drive system of the electric vehicle according to the present invention includes a battery pack 100, a motor-driven thermoelectric intrinsic inverter 102, a thermoelectric power intrinsic switch block 104, a driving motor (or electric motor) ( 106). In addition, it may be configured to further include a vehicle upper controller system (not shown).

The driving motor or the electric vehicle driving motor 106 is a motor that drives the driving wheels of the vehicle, and generates rotational power capable of directly driving the electric vehicle. The motor-driven thermoelectric intrinsic inverter or motor control inverter 102 generates an output that drives the driving motor 106 with power supplied from the battery pack 100.

In particular, as shown in FIG. 2, the power of the battery is input from the battery 100 through the power supply line 101 to the inverter 102 embedded in thermoelectric power generation. The input power (or DC power) drives high-speed switching in the inverter 102 embedded in thermoelectric power generation. In addition, the AC power converted by the switching action in the inverter 102 is supplied to the thermoelectric power generation intrinsic switch block 104 via the power supply line 103.

In the thermoelectric intrinsic switch block 104, it is composed of switches interconnected with the inner winding of the motor 106. Meanwhile, as shown in FIG. 1, the motor winding switching switch control unit 81 is configured in the inverter 102. At this time, a signal for each switch of the switch block 104 is transmitted from the motor winding switch control unit 81 in the inverter 102 through the motor winding switch control line 82. The transmitted signal (or signal per switch) turns on/off each switch of the switch block 104 through signal transmission of an insulating method to change the entire winding connection structure of the motor.

Meanwhile, the motor 106 is formed integrally with the switch block 104. That is, each switch of the switch block 104 is configured by being integrated with the winding in the motor 106. Also, the motor 106 is configured separately from the inverter 102. That is, a connection structure is formed by connecting and connecting the three-phase output of the inverter 102 and the three-phase input of the motor 106. That is, the inverter 102 and the motor 106 integrated with the switch block 104 are configured to be separated from each other, but configured to connect only the three-phase output and the input through a connection structure.

Next, the configuration of the inverter circuit according to an embodiment of the present invention will be described in detail with reference to FIG. 3.

3, the switching circuit of the inverter 102 according to the present invention is composed of six switching elements 111. Preferably, the switching element is an insulated gate bipolar transistor (IGBT) or transistor (TR) element. When DC power is supplied from the DC power input terminal or the power line 101, the output voltage is transferred to the output terminal or the power line 103 by the on/off operation of the six switching elements.

Next, a connection configuration of a three-phase motor, an inverter, and a switch block according to an embodiment of the present invention will be described with reference to FIG. 4.

As shown in Figure 4, the connection configuration of the motor drive system according to an embodiment of the present invention shows the configuration of a motor and an inverter of a variable structure that integrally configures a switch block. That is, the module connection structure of an inverter, a motor, and a switch block of a drive system having a switch block for controlling a variable structure motor is shown.

4, the DC voltage input terminal of the inverter is connected to the battery, and the output terminal and the switching block of the inverter are connected. In FIG. 4, it is described as an example of application of a block having 9 switches. However, the number of switches may be reduced or increased depending on the number of steps to be varied.

The switch of the switching block is used as a THYRISTOR element-based module or a variable switching module of transistors (FET, BJT) that changes the winding structure of each of the three-phase inverters.

As an embodiment, as shown in FIG. 4, for each of the three phases, two windings are connected in parallel. And the first switch (SW1, SW4, SW7) is provided at the rear end of the first winding (La1, Lb1, Lc1) of each phase (a,b,c), the front end of the second winding (La2, Lb2, Lc2) In the third switch (SW3, SW6, SW9) is provided. The second switches SW2, SW5, and SW8 are provided on a line connecting a portion between the rear end of the first winding and the front end of the first switch and a portion between the front end of the third winding and the rear end of the third switch.

In addition, the variable switch module is composed of several switches like an inverter inside. Three output lines from six inverter switches are connected to the switch block. The output lines of the motor are configured to have a three-phase motor characteristic by combining the switching connections by making various output lines according to the variable structural characteristics of the motor.

It has such three-phase characteristics. In addition, when switching to change the winding structure of the motor is required during control, it is designed to be connected to a modified structure that can sequentially turn off (OFF) and sequentially turn on (ON) the current current in each phase.

That is, the switch block is connected to at least three on/off-capable serial structure switches of each of the three phases of the motor so that independent control of each phase can be performed by combining series and parallel characteristics for each phase. In addition, for independent control of each phase, at least three or more connections are configured in parallel to reduce the cost of the product through the application of a switch minimized by zero (zero) current when switching each phase of the three-phase motor. .

In the present invention, since the total number of switches in the switch block is large, it is difficult to integrate the motor, the switch block, and the inverter. Therefore, the motor and the switch block are integrated and the inverter is separated.

In order to reduce the thermal load of the motor and the integrated weight, the inverter and the switch block may be integrated, but in this case, the inverter and the switch block are integrated because the number of connecting connectors and wires of the motor for variable switching of the motor winding is too large. Inefficient due to system structure.

Therefore, the motor drive system of the present invention integrates the switch block with the motor and selects a common heat dissipation structure with the motor. Through this, it is possible to minimize the electrical loss by reducing the overall volume and making the electrical connection line very short. That is, such a switch block-integrated winding switching variable motor is divided and connected to the windings to be connected inside the motor, so the connection with the inverter is connected to the three-line driving power line, and the driving power line is simplified. By maximizing the heat dissipation structure, the overall size of the drive system can be reduced.

That is, the present invention integrates the motor and the switch block and configures the inverter independently. That is, the variable motor winding forms a winding connection connector capable of independently connecting each winding on the cover surface of the motor, like a basic motor, and connects it to switches of the switch block. Then, the cover of the switch block is again combined with the motor cover to be integrated. Through this, direct thermal and electrical effects from the inside of the motor can be minimized. In addition, without making the motor winding connection connector on the cover case of the motor, it is possible to minimize the combined coupling size by placing the cover after directly connecting the switches of the variable motor winding and the switch block.

Next, changing the winding structure by the switch structure in the switch block 104 according to an embodiment of the present invention will be described with reference to FIG. 5.

5 shows a switch block 104 that switches the three-phase output of the inverter. That is, FIG. 5 shows examples of controlling on/off for each switch when the inverter 102 and the variable structure motor 106 are connected to the switch block 104 in the structure shown in FIG. 4.

5A shows a state in which three switches SW2, SW5, and SW8 are turned on and the rest are turned off in the switch block 104. Two motor windings are connected in series for each phase of the three-phase motor to sequentially turn off and on each upper current sequentially. That is, the two windings are switched in series so that each phase is connected in series.

5B, in the switch block 104, six switches (SW1, SW3, SW4, SW6, SW7, SW9) are turned on and the rest are turned off. Two motor windings are connected in parallel to each phase of a three-phase motor, so that each top current can be sequentially turned off and on. That is, it is switched so that the two windings are connected in parallel in each phase.

Through the connection structure shown in FIG. 5, the operation of the electric independent off and on for each phase of the three phases of the motor shows a structure capable of continuously and independently proceeding for the three phases.

Variable structure motors use a series connection to output high efficiency in a low-speed high-torque region, and a parallel connection to produce high efficiency in a high-speed region.

Next, the configuration of the switching element die module 110 of the inverter according to an embodiment of the present invention will be described in detail with reference to FIG. 6.

As shown in FIG. 6, the switching elements 111 of the inverter 102 according to the present invention are made of a bare die which is a unit element, and the switching bare die element 111 is on a ceramic substrate 112. Collected and connected to form a switching element die module 110. That is, the switching element die module 110 is composed of a switching bare die element 111 and a ceramic substrate 112.

The six switching elements 111 of FIG. 3, or the switching bare die element 411, generate heat during switching of the elements and become respective heat sources. That is, a heat proportional to the current flowing during switching of each switching bare die element 111 is generated in each switching element.

Here, the ceramic substrate 112 may be applied to a metal substrate, a metal PCB, etc., in addition to a ceramic substrate, a ceramic PCB, and the like. Therefore, for convenience of description below, a ceramic substrate is described, but a metal substrate may also be applied.

Next, the configuration of the heat dissipation power generation module 400 mounted on an inverter or a switching element die module according to an embodiment of the present invention will be described with reference to FIGS. 7 and 8.

The heat dissipation power generation module 400 is a module having a heat dissipation function and a power generation function, and refers to a module including heat dissipation function elements such as a heat sink 410 and a heat sink 420 and power generation function elements such as a power generation module 430.

7 and 8, the heat dissipation power generation module 400 according to an embodiment of the present invention is mounted on a switching element die module 110 composed of a switching bare die element 111 and a ceramic substrate 112. It is composed.

7 and 8, the thermoelectric power module 400 according to an embodiment of the present invention cools the heat of the heat sink 410 and the heat sink 410 attached to the upper and lower sides of the switching bare die element 111. It consists of a heat sink 420, a heat sink 410 and a thermoelectric power module 430 formed between the heat sink 420, and a heat transfer connector 440 connecting the heat sink 410 and the heat sink 420. do.

First, the heat sink 410 is attached to both the upper and lower sides of the switching bare die element 111 or the switching element die module 110 to absorb heat generated in the switching bare die element 111.

That is, the heat sink 410 is composed of a lower heat sink 411 attached to the lower surface of the switching element die module 110 and an upper heat sink 412 attached to the upper surface of the module 110. That is, the heat sink 410 is attached to both the upper and lower sides of the switching element die module 110.

Next, the heat sink 420 is a conventional heat sink module that dissipates heat.

Preferably, the heat sink 420 is configured by a water cooling method using a motor-driven pump. That is, the heat sink 420 is composed of a water-cooled heat sink through which the refrigerant passes. However, the heat sink 420 may also be an air-cooled heat sink.

Preferably, the heat sink 420 may also be formed on a ceramic substrate.

Next, the heat transfer connector 440 connects the heat sink 410 and the heat sink 420, and is formed of a heat transfer material to transfer heat generated from the heat sink 410 to the heat sink 420. In particular, the heat transfer connector 440 is formed to be vertically connected between the heat sink 410 and the heat sink 420. That is, the heat transfer connector 440 is a connector that connects the heat sink 410 and the heat sink 420 to generate thermoelectric power.

That is, the switching element die module 110 on which the switching die element 111 is formed forms a high temperature portion where heat is generated, and the heat sink 420 forms a low temperature portion having a low temperature. Therefore, the heat of the high temperature portion of the switching element 111 is transferred to the low temperature portion of the heat sink 420 through the heat transfer connector 440.

Meanwhile, the heat transfer connector 440 is connected to the heat sink 410, but is connected to both the top heat sink 411 and the bottom heat sink 412. Therefore, the heat transfer connector 440 transfers heat generated from the upper heat sink 411 and the lower heat sink 412 to the heat sink 420.

Next, the thermoelectric power module 430 is composed of a thermoelectric element that converts thermal energy into electrical energy, and is formed between the heat sink 410, which is a high-temperature section, and the heat sink 420, which is a low-temperature section, to heat the heat of the heat sink 410. Absorbs and converts thermal energy into electrical energy.

Thermoelectric devices are semiconductor devices that convert thermal energy into electrical energy. The thermoelectric element uses a conventional power generator.

In addition, a power generation electrode 431 is formed on the top surface and/or the bottom surface of the thermoelectric power generation module 430, respectively. The power generation electrode 431 is an electrode terminal for transmitting electricity generated by the thermoelectric power generation module 430 to the outside. Preferably, the power generation electrode 431 is formed of a copper (Cu) electrode. That is, power is generated from the thermoelectric power generation module 430 by connecting a wire to the power generation electrode 431 to the outside.

As described above, the heat dissipation power generation module 400 of the present invention combines the heat sink 410 on the upper and lower sides of the switching element die module 110, respectively, to discharge heat generated from the switching element 111.

The heat dissipation of the conventional bare die device generally forms a heat sink and a heat sink integrally on the lower side. That is, the heat sink is directly connected to the heat sink to facilitate heat dissipation.

However, in the present invention, since the thermoelectric power module 430 is coupled to the switching element die module 110, the heat dissipation effect of the inverter and the switching block is reduced, and accordingly, the heat dissipation efficiency is reduced. In addition, when the heat dissipation decreases, heat is generated in the switching element, and energy consumption increases, resulting in a large loss, thereby reducing switching efficiency.

Therefore, the heat dissipation power generation module 400 of the present invention by attaching a heat sink 412 to the upper portion of the switching element die module 110 to perform heat dissipation, thereby preventing the reduction in efficiency due to the coupling of the thermoelectric power generation element 430. Can. That is, through the double heat dissipation, the heat dissipation effect is reduced as compared to the heat dissipation of the existing elements due to the attachment of the thermoelectric power generation element 430.

Next, the configuration of the switching element die module 110 and the heat dissipation power generation module 400 according to an embodiment of the present invention will be described with reference to FIG. 9.

As shown in FIG. 9, the switching element die module 110 forms bonding portions on the upper and lower surfaces of the switching bare die element 111 and through solder 116 or wire 117, other elements or PCB substrates or ceramics. Bonding to the substrate 112.

In particular, bonding portions are formed on both the upper and lower surfaces of the switching bare die element 111 to bond the PCB substrate or the ceramic substrate 112 to both the upper side and the lower side. Then, the heat sink 412 is formed on the bottom surface of the PCB substrate 112 located on the bottom surface, and the heat sink 412 is formed on the top surface of the PCB substrate 112 located on the top surface.

In addition, the thermoelectric power module 430 is formed in close contact with the lower surface of the lower heat sink 412.

Next, a method for producing the switching element die module 110 and the heat dissipation power generation module 400 according to the first embodiment of the present invention will be described with reference to FIGS. 10 to 11.

First, in a bare die production process, a bonding portion is formed on a metal PCB solder pad or a ceramic substrate 112 to be bonded to the bare die element 111, but aluminum (Al) plating is formed on a portion (or bonding portion) to be wire-bonded. , For parts requiring soldering, it is manufactured by applying copper (Cu) plating.

Next, a plating process is performed on the bottom surface of the bare die element 111 to enable soldering to form a bonding portion 113 for soldering. In addition, a soldering plated surface (or a bonding portion for soldering) 113 and a plating surface (or bonding portion for wiring) 114 capable of wire bonding are generated on a top surface of the bare die element 111.

The switching bare die element 111 is shown in FIG. 10. That is, FIG. 10(a) is a plan view of the switching bare die element 111, and FIG. 10(b) is a rear view of the switching bare die element 111.

10(a) or 10(b), a bonding portion 113 for soldering or a plating for wiring is formed on the upper or lower surface of the switching bare die element 111. The bonding portion 114 for wiring is formed.

Next, a metal PCB solder pad or a ceramic substrate 112 is connected to the bottom of the bare die element 111. At this time, soldering is performed using the cream solder 116 on the bonding portion 113 for solder formed on the bottom of the bare die element 111.

Next, in a situation in which the bottom of the bare die element 111 is fixed to the metal PCB solder pad 112, wire bonding is performed. That is, the wire 117 is bonded to the bonding portion 114 for the wire formed on the top of the bare die element 111.

Next, when the wire bonding is completed, a metal PCB solder pad or a ceramic substrate 112 is attached to the top of the bare die element 111. That is, by using the cream solder 116 on the bonding portion 113 for soldering the top of the bare die element 111, the PCB solder pad or the ceramic substrate 112 is soldered to complete the module.

The completed module is shown in FIG. 11.

Thereafter, the thermoelectric power module 430 is formed on the lower surface of the lower PCB solder pad or the ceramic substrate 112.

Next, a method of manufacturing the switching element die module 110 and the heat dissipation power generation module 400 according to the second embodiment of the present invention will be described with reference to FIG. 12.

The second embodiment of the present invention is a method of producing by bonding a double-sided bare die using a clip.

First, in a bare die production process, a bonding portion is formed on a metal PCB solder pad or a ceramic substrate 112 to be bonded to the bare die element 111, but aluminum (Al) plating is formed on a portion (or bonding portion) to be wire-bonded. , For parts requiring soldering, it is manufactured by applying copper (Cu) plating.

Next, a plating process is performed on the bottom surface of the bare die element 111 to enable soldering to form a bonding portion 113 for soldering. In addition, a soldering plated surface (or a bonding portion for soldering) 113 and a plating surface (or bonding portion for wiring) 114 capable of wire bonding are generated on a top surface of the bare die element 111.

Next, a clip 118 capable of contacting and fixing the bonding portion 113 for soldering on the top of the bare die element 111 is manufactured.

Next, a metal PCB solder pad or a ceramic substrate 112 is connected to the bottom of the bare die element 111. At this time, soldering is performed using the cream solder 116 on the bonding portion 113 for solder formed on the bottom of the bare die element 111.

Next, in a situation in which the bottom of the bare die element 111 is fixed to the metal PCB solder pad 112, wire bonding is performed. That is, the wire 117 is bonded to the bonding portion 114 for the wire formed on the top of the bare die element 111.

Next, when the wire bonding is completed, the clip PCB solder pad 118 is fixed to the top of the bare die element 111. At this time, by using a cream solder 116 on the bonding portion 113 for soldering the top of the bare die element 111, the clip PCB solder pad 118 is soldered and fixed.

Next, the module is completed by pressing the metal PCB solder pad 112 on the surface of the clip solder pad 117 on the top surface of the bare die element 111 so that soldering or heat dissipation is possible.

On the other hand, as shown in Figure 12 (a), the clip-type solder pad 118 is connected to the lower PCB solder pad 112, it can be directly attached to the upper heat sink 412 directly to the top. In addition, as another embodiment, as shown in Figure 12 (b), Guy, clip-type solder pad 118 is connected to the lower PCB solder pad 112, the upper PCB solder pad 112 is attached to the top, The upper heat sink 412 may be attached to the upper PCB solder pad 112 to be connected.

Above, although the invention made by the present inventors has been specifically described according to the above-described embodiments, the present invention is not limited to the above-described embodiments, and it is needless to say that the invention can be changed in various ways without departing from the gist thereof.

81: motor winding changeover switch control
100: battery 102: self-thermoelectric power generation combined inverter
104: self-thermoelectric combined switch block 106: motor
110: switching element die module 111: switching bare die element
112: ceramic substrate 113: solder bonding portion
114: bonding portion for wire 116: cream solder
117: wire 118: clip solder pad
400: heat dissipation module 410: heat sink
420: heat sink 430: thermoelectric power module
431: power generation electrode 440: heat transfer connector

Claims (6)

In the motor drive system of a three-phase winding variable structure equipped with an electromagnetic transmission switch block integrated heat generation
A battery that supplies DC power;
A motor that drives the driving wheels of the electric vehicle;
A switch block installed on the winding of the motor and composed of a plurality of switches for converting the winding connection; And,
It includes a switching circuit composed of a switching element, and when the DC power is supplied from the battery, including an inverter for transmitting the three-phase output voltage to the winding of the motor by the on/off operation of the switching element,
The inverter,
A switching element die module including a substrate and a plurality of switching elements formed on the substrate;
A heat sink attached to both the upper side and the lower side of the switching element die module;
A heat sink connected to the heat sink; And,
And a thermoelectric power module formed between the heat sink and the heat sink.
According to claim 1,
The switching element is formed of a bare die element, the motor driving system, characterized in that attached to the substrate by soldering.
According to claim 1,
The inverter further comprises a heat transfer connector that connects the heat sink and the heat sink to generate thermoelectric power.
According to claim 2,
After the bonding element for solder is formed on the bottom surface of the bare die element of the switching element, it is connected to the metal PCB solder pad (hereinafter, the lower solder pad) of the lower substrate through the cream solder, and after the bare die element is fixed to the lower solder pad. Bonding the wire to the bonding portion for the wire formed on the upper surface of the bare die element, and after the wire is bonded, the metal PCB solder pad of the upper substrate on the solder bonding portion formed on the upper surface of the bare die element (hereinafter upper solder pad) Motor drive system characterized by being connected via soldering furnace.
According to claim 2,
After the bonding element for solder is formed on the bottom surface of the bare die element of the switching element, it is connected to the metal PCB solder pad (hereinafter, lower solder pad) of the lower substrate through the cream solder, and after the bare die element is fixed to the lower solder pad. The wire is bonded to the bonding portion for the wire formed on the upper surface of the bare die element, and after the wire is bonded, a clip type solder pad is attached to the bonding portion for solder formed on the upper surface of the bare die element through soldering, the clip type A motor driving system characterized in that the upper side of the solder pad is connected to the metal PCB solder pad (hereinafter, the upper solder pad) of the upper substrate through soldering.
According to claim 1,
The switch block includes a switch on each of the three-phase windings of the motor, and controls the respective switch by turning on/off the corresponding switch independently for each phase of the motor, wherein the switch block, for each of the three phases of the motor, each The two windings of the phases are connected in parallel, the first switch of each phase is provided at the rear end of the first winding of each phase, the third switch of each phase is provided at the front end of the second winding of each phase, and the rear end of the first winding of each phase And a second switch on each phase on a line connecting a portion between the front end of the first switch of each phase and a front end of the third winding of each phase and a rear end of the third switch on each phase.

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