TW201911728A - Stacked inverter for converting direct current outputted from a direct current power source into alternating current for being outputted to a motor - Google Patents

Abstract

A stacked inverter is used for converting direct current outputted from a direct current power source into alternating current for being outputted to a motor. The stacked inverter comprises a heat dissipation module, two power modules, a current output conduction unit, and a current output conduction unit. The heat dissipation module includes a heat dissipation frame. The heat dissipation frame is in a hollow shape and defines a liquid flow path. The liquid flow path has two openings at the upper and lower ends, a first liquid inlet, and a first liquid outlet. The power modules are respectively stacked on the upper and lower sides of the heat dissipation frame. Each power module includes a first surface and a second surface opposite to the first surface. The second surfaces of the power modules are opposite to each other and respectively cover and close the openings.

Description

Stacked inverter

The invention relates to an inverter, in particular to a stacked inverter with a heat dissipation module.

In general, an inverter for a vehicle uses an Insulated Gate Bipolar Transistor (IGBT) module to convert DC power into an AC power output for use in other electrical components. Generally, a vehicle inverter usually has a water-cooling heat dissipation module, which is used to cool the high heat generated when the IGBT module operates. In order to increase the power that the inverter can output, the current practice is to parallel two sets of IGBT modules of the same specification to improve the output current and power of the inverter. However, the above design method will cause the structure of the water-cooled heat-dissipating module to be complicated. The increase in the degree, as well as the cost of manufacturing, is also likely to cause differences in the temperature of the two sets of IGBT modules after cooling.

In addition, the existing water-cooling heat-dissipating module generally has only a single-direction liquid outlet and a liquid inlet, which is limited by the position of the liquid outlet and the liquid inlet, so that it is easy to connect the water outlet to the liquid outlet after the vehicle configuration. Or the problem of the inlet port, and it is also easy to increase the installation space required for the water pipe route. Moreover, if the water-cooling heat-dissipating module and the water pipe route cannot cooperate with each other, the water inlet and outlet ports of the water-cooling heat-dissipating module will need to be redesigned, thereby causing waste of development cost and development time. Therefore, the position of the liquid outlet and the inlet of the existing water-cooling heat dissipation module cannot be flexibly changed according to different vehicle structures.

Therefore, one of the objects of the present invention is to provide a stacked inverter that achieves heat dissipation requirements by a heat dissipation module having a simple structure.

Another object of the present invention is to provide a stacked inverter that simultaneously dissipates heat from two power modules by using a single group of heat dissipation modules, so that the temperatures of the two power modules after cooling are uniform.

Another object of the present invention is to provide a stacked inverter with a plurality of inlets and outlets in different directions, and the inlet pipe and the outlet pipe can be respectively connected to the required position according to requirements. The liquid port and the liquid outlet can not only effectively save the development cost and time of the heat dissipation module, but also increase the flexibility of the application to meet the needs of different vehicles.

Therefore, in some implementations, the stacked inverter of the present invention is configured to convert DC power output from a DC power source into AC power for output to a motor. The stacked inverter includes a heat dissipation module and two power modes. A group, a current output conducting unit, and a current output conducting unit. The heat dissipation module includes a heat dissipation frame that is hollowed out and defines a liquid flow path. The liquid flow path has two openings at the upper and lower ends, a first liquid inlet, and a first outlet. Liquid port. The power modules are respectively stacked on the upper and lower sides of the heat dissipation frame. Each power module includes a first surface, a second surface opposite to the first surface, an input electrode unit, and an output electrode unit spaced apart from the input electrode unit. The second faces of the power modules are opposite each other and respectively cover and close the openings. The current input conducting unit is electrically connected between the DC power source and the input electrode units of the power modules. The current output conducting unit is electrically connected between the output electrode units and the motor.

In some embodiments, each power module further includes a heat sink protruding from the second surface, and the heat sink penetrates into the liquid flow path through the corresponding opening.

In some embodiments, the heat dissipation frame further defines an inflow channel respectively connected to the liquid flow path, and an outflow channel, the inflow prop has a second liquid inlet in a direction different from the first liquid inlet. The outflow prop has a second liquid outlet in a direction different from the first liquid outlet.

In some embodiments, the liquid flow path extends in a left-right direction, and the inflow channel and the outflow channel respectively extend in a front-rear direction perpendicular to the left-right direction.

In some embodiments, the openings are identical in shape and symmetrical to each other.

In some embodiments, the liquid flow prop has a heat dissipation zone that communicates between the openings, and an inflow rectification zone that communicates between the heat dissipation zone and the first liquid inlet.

In some embodiments, the heat dissipation module further includes a valve unit, the valve unit selectively blocking one of the first liquid inlet and the second liquid inlet, and the valve unit is selectively blocked One of the first liquid outlet and the second liquid outlet is broken.

In some embodiments, the valve unit has a first closure for controlling opening and closing of the first inlet, and a second closure for controlling opening and closing of the second inlet. a third closure member for controlling opening and closing of the first liquid outlet, and a fourth closure member for controlling opening and closing of the second liquid outlet.

In some embodiments, the liquid flow prop has a heat dissipation zone that communicates between the openings, and an inflow rectification zone that communicates between the heat dissipation zone and the first liquid inlet.

In some embodiments, the first liquid inlet port has a rectangular shape, and the liquid inlet rectifying portion has a liquid inlet rectifying portion connected to the first liquid inlet port, and an inner liquid rectifying portion communicating with the heat dissipating region. And a tapered portion connected between the external liquid rectifying portion and the inner liquid rectifying portion, the inner liquid rectifying portion extending in a vertical direction perpendicular to the horizontal direction is smaller than the outer liquid rectifying portion a height extending in the up-and-down direction, a cross-sectional area taken along the vertical direction of the tapered portion is gradually reduced by the external liquid rectifying portion toward the inner liquid rectifying portion, the inflow passage and the external liquid rectifying portion And the tapered portion is in communication, and the second liquid inlet is circular.

The present invention has at least the following effects: the liquid flow channels are located at the upper and lower ends of the openings, so that the second surface of the power modules covering the openings can simultaneously dissipate heat by the liquid, and due to the electric modes The group is cooled only by one of the liquid flow paths, so that the temperature differences of the power modules can be made uniform. In addition, while achieving the cooling purpose, since the structure of the heat dissipation frame is simple, the manufacturing cost is also relatively saved.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 and FIG. 2, an embodiment of the stacked inverter of the present invention is disposed on an electric vehicle (not shown) for converting direct current output from the direct current power source into alternating current to output to a motor (not shown). The DC power supply includes a film capacitor 20 having a first input positive electrode 201, a first input negative electrode 202, a second input positive electrode 203, a second input negative electrode 204, and a third input positive electrode 205. A third input negative electrode 206 includes a heat dissipation module 1, two power modules 2, a current input conduction unit 3, and a current output conduction unit 4.

Referring to FIG. 3 to FIG. 5, the heat dissipation module 1 includes a heat dissipation frame 11 which is hollowed out and defines a liquid flow path 111 extending along a left-right direction D1, and is respectively connected to the liquid flow path. An inlet channel 118 and an outlet channel 120 of 111. The liquid flow path 111 has two openings 112 respectively located at the upper and lower ends and having the same shape and symmetrical with each other, a first liquid inlet 113, a first liquid outlet 114, and a communication between the openings 112. The heat dissipation zone 115 and a liquid inlet rectification zone 116 connected between the heat dissipation zone 115 and the first liquid inlet 113. The liquid inlet rectifying section 116 has a liquid inlet rectifying portion 116a communicating with the first liquid inlet 113, an inner liquid rectifying portion 116b communicating with the heat dissipating portion 115, and a communicating medium rectifying portion The tapered portion 116c between the 116a and the internal liquid rectifying portion 116b. The height of the internal liquid rectifying portion 116b extending in the vertical direction D3 perpendicular to the left-right direction D1 is smaller than the height of the external liquid rectifying portion 116a extending in the vertical direction D3. The cross-sectional area taken along the vertical direction D3 of the tapered portion 116c is gradually reduced by the outer liquid rectifying portion 116a toward the inner liquid rectifying portion 116b.

The inflow channel 118 has a second liquid inlet 119 in a direction different from the first liquid inlet 113. The outlet channel 120 has a second liquid outlet 121 in a direction different from the first liquid outlet 114. The inlet passage 118 communicates with the external liquid rectifying portion 116a and the tapered portion 116c. The liquid that has flowed in through the first liquid inlet 113 flows through the external liquid rectifying portion 116a, the tapered portion 116c, and the inner liquid rectifying portion 116b, and a part of the liquid that flows in through the second liquid inlet 119 is sequentially The flow through the external liquid rectifying unit 116a, the tapered portion 116c, and the internal liquid rectifying portion 116b, and the other portion sequentially flows through the tapered portion 116c and the internal liquid rectifying portion 116b, and the external liquid rectifying portion 116a, The design of the tapered portion 116c and the inner liquid rectifying portion 116b is gradually reduced from large to large, so that the effect of rectifying the liquid can be achieved, and the liquid can be smoothly flowed into the heat radiating region 115. In the present embodiment, the inlet passage 118 extends along a front-rear direction D2 perpendicular to the left-right direction D1, that is, the second liquid inlet 119 of the inlet passage 118 and the first liquid inlet of the liquid flow passage 111. The mouth 113 is perpendicular to both directions, but the inlet passage 118 may also extend in other directions different from the front-rear direction D2. In other words, the direction of the second liquid inlet 119 of the inlet passage 118 may be other directions different from the direction of the first liquid inlet 113 of the liquid flow path 111, and the two are not perpendicular to each other. limit. In addition, the first liquid inlet 113 has a square shape, and the second liquid inlet 119 has a circular shape, but the first liquid inlet 113 and the second liquid inlet 119 may also be different shapes from the other embodiments. Not limited to this.

In this embodiment, the heat dissipation frame 11 is symmetrical along the left and right direction D1, and the liquid flow path 111 further has a liquid discharge area 117 communicating between the heat dissipation area 115 and the first liquid outlet 114. . The liquid discharge area 117 has a liquid discharge portion 117a communicating with the first liquid outlet 114, an inner liquid discharge portion 117b communicating with the heat dissipation portion 115, and a communicating with the outer liquid portion 117a and the inner liquid The communication portion 117c between the portions 117b. The height of the inner liquid discharge portion 117b extending in the vertical direction D3 is smaller than the height of the outer liquid portion 117a extending in the vertical direction D3. The cross-sectional area of the communicating portion 117c in the vertical direction D3 is gradually increased from the inner liquid discharging portion 117b toward the outer liquid discharging portion 117a. The outlet passage 120 extends in the front-rear direction D2 and communicates with the outlet liquid portion 117a and the communication portion 117c. That is, the second liquid outlet 121 of the outlet passage 120 and the first liquid outlet 114 of the liquid flow passage 111 are perpendicular to each other. It should be noted that the configuration of the liquid discharge area 117 may also be in other forms, and is not limited to the embodiment.

Referring to FIG. 3 and FIG. 6 to FIG. 9 , the heat dissipation module 1 further includes a valve unit 13 and an adapter unit 14 . The valve unit 13 selectively blocks one of the first liquid inlet 113 and the second liquid inlet 119, and the valve unit 13 selectively blocks the first liquid outlet 114 and the second outlet One of the liquid ports 120. The valve unit 13 has a first closure member 131 detachably assembled to the heat dissipation frame 11 to control opening and closing of the first liquid inlet 113, and a detachable assembly to the heat dissipation frame 11 to control the second liquid inlet The opening and closing second sealing member 132 of the opening 119, a third closing member 133 detachably assembled to the heat dissipation frame 11 to control opening and closing of the first liquid outlet 114, and a detachable assembly for heat dissipation The frame 11 controls a fourth closure member 134 that opens and closes the second liquid outlet 121. In this embodiment, the first closing member 131 and the third closing member 133 are respectively a cover that can be locked by the user to the heat dissipation frame 11 or detached from the heat dissipation frame 11 by the screw lock, and the second closure The member 132 is a cover that can be inserted into the second liquid inlet 119 or detached from the second liquid inlet 119. The fourth sealing member 134 is a second liquid outlet 134 for the user to insert into the second liquid outlet. The cover of the second liquid outlet 121 is detached from the port 121.

The adapter unit 14 has a first liquid inlet adapter 141 detachably assembled to the heat dissipation frame 11 for communicating with the first liquid inlet 113 and a vehicle coolant line (not shown), and a detachable unit The second liquid inlet adapter 142 is assembled to the second liquid inlet 119 and communicates with the second liquid inlet 119 and the vehicle coolant line, and is detachably assembled to the heat dissipation frame 11 for communication. The first liquid outlet 114 and the first liquid outlet 143 of the vehicle coolant line are detachably assembled to the second liquid outlet 121 and are configured to communicate with the second liquid outlet 121 and the vehicle. A second outlet adapter 144 of the coolant line is used. Thereby, the first liquid inlet adapter 141 or the second liquid inlet adapter 142 can transfer the coolant delivered by the vehicle coolant line to the liquid flow channel 111, and the first liquid outlet adapter 143 or The second liquid outlet adapter 144 can conduct the liquid flow path 111 into another vehicle coolant line. The aforementioned cooling liquid is exemplified by cooling water. Of course, the cooling liquid may also be other different forms of cooling liquid.

In the actual installation of the stacked inverter, the valve unit 13 is used to block one of the first liquid inlet 113 and the second liquid inlet 119 according to different coolant line configurations of different models, and The switching unit 14 is installed in the first liquid inlet 113 and the second liquid inlet 119, and the first liquid outlet 114 and the second liquid outlet 121 are blocked by the valve unit 13 One of the first liquid outlets 114 and the second liquid outlets 121 are disposed in the other one. The following are explained for different usage scenarios:

Referring to FIG. 4 and FIG. 6, in a usage mode, if the coolant is to enter from the first liquid inlet 113 and is discharged from the first liquid outlet 114, the second sealing member 132 is installed in the second The liquid inlet 119 and the second sealing member 134 are installed in the second liquid outlet 121 to close the second liquid inlet 119 and the second liquid outlet 121, respectively. Then, the first liquid inlet adapter 141 is disposed on a side of the heat dissipation frame 11 on which the first liquid inlet 113 is formed, and the first liquid outlet adapter 143 is disposed on the heat dissipation frame 11 The other side of the first liquid outlet 114, whereby the coolant can flow into the liquid flow path 111 through the first liquid inlet adapter 141 and the first liquid inlet 113 in the direction of the arrow, and along the arrow The direction discharges the liquid flow path 111 through the first liquid outlet 114 and the first liquid outlet 143.

Referring to FIG. 4 and FIG. 7 , in another usage mode, if the coolant is to enter from the second liquid inlet 119 and is discharged from the second liquid outlet 121 , the first sealing member 131 is mounted on the heat dissipation frame. 11 is formed with one side of the first liquid inlet 113, and the first sealing member 133 is disposed on the other side of the heat dissipation frame 11 formed with the first liquid outlet 114 to respectively close the first liquid inlet The port 113 and the first liquid outlet 114. Then, the second liquid inlet adapter 142 is installed in the second liquid inlet 119, and the second liquid outlet adapter 144 is installed in the second liquid outlet 121. The coolant can flow into the liquid flow path 111 through the second liquid inlet adapter 142 and the second liquid inlet 119 in the direction of the arrow, and pass through the second liquid outlet 121 and the second outlet in the direction of the arrow. The liquid adapter 144 discharges the liquid flow path 111.

Referring to FIG. 4 and FIG. 8 , in another usage mode, if the coolant is to enter from the first liquid inlet 113 and is discharged from the second liquid outlet 121 , the second sealing member 132 is installed on the first sealing member 132 . a second liquid inlet 119, and the first sealing member 133 is disposed on the other side of the heat dissipation frame 11 on which the first liquid outlet 114 is formed to respectively close the second liquid inlet 119 and the first liquid outlet Port 114. Next, the first liquid inlet adapter 141 is disposed on a side of the heat dissipation frame 11 on which the first liquid inlet 113 is formed, and the second liquid outlet adapter 144 is installed in the second liquid outlet a port 121, whereby the coolant can flow into the liquid flow path 111 through the first liquid inlet adapter 141 and the first liquid inlet 113 in the direction of the arrow, and the second liquid outlet port is along the arrow direction. 121 and the second liquid outlet adapter 144 discharge the liquid flow path 111.

Referring to FIG. 4 and FIG. 9 , in another usage mode, if the coolant is to enter from the second liquid inlet 119 and is discharged from the first liquid outlet 114 , the first sealing member 131 is mounted on the heat dissipation frame. 11 is formed with one side of the first liquid inlet 113, and the second sealing member 134 is disposed at the second liquid outlet 121 to respectively close the first liquid inlet 113 and the second liquid outlet 121. Next, the second liquid inlet adapter 142 is installed in the second liquid inlet 119 and the first liquid outlet adapter 143 is mounted on the heat dissipation frame 11 to form the first liquid outlet 114. One side, whereby the coolant can flow into the liquid flow path 111 through the second liquid inlet adapter 142 and the second liquid inlet 119 in the direction of the arrow, and the first liquid outlet port is along the arrow direction 114 and the first liquid outlet adapter 143 discharge the liquid flow path 111.

Referring to FIG. 3 , FIG. 10 and FIG. 11 , the two power modules 2 are stacked on top of each other and are respectively disposed on the upper and lower sides of the heat dissipation frame 11 and corresponding to the openings 112 . Each power module 2 includes a body 21 . An input electrode unit 22, an output electrode unit 23 and a heat sink 24. The body 21 has a first surface 211 and a second surface 212 opposite to the first surface 211. The output electrode unit 23 and the input electrode unit 22 are disposed on the first surface 211, and the second surfaces 212 are opposite to each other. . The input electrode unit 22 is disposed on the first surface 211, and includes a first positive electrode 221, a first negative electrode 222, a second positive electrode 223, a second negative electrode 224, a third positive electrode 225, and a third negative electrode 226. The first positive electrode 221, the second positive electrode 223 and the third positive electrode 225 are spaced apart from each other, and the first negative electrode 222, the second negative electrode 224 and the third negative electrode 226 are spaced apart from each other, and the first positive electrode 221 and the first electrode The anodes 222 are adjacent to each other, the second cathodes 223 and the second anodes 224 are adjacent to each other, and the third cathodes 225 and the third anodes 226 are adjacent to each other, and the input electrode unit 22 of one of the power modules 2 The first positive electrode 221 , the second positive electrode 223 , and the third positive electrode 225 respectively correspond to the positions of the first negative electrode 222 , the second negative electrode 224 , and the third negative electrode 226 of the other power module 2 . The output electrode unit 23 is disposed on the first surface 211 and is located on the other side of the first surface 211 with respect to the input electrode unit 22, and includes a first output electrode 231, a second output electrode 232, and a third output electrode. 233, which represents the U, V, and W poles of the three-phase current, wherein the positions of the first output electrodes 231 of the two power modules 2 correspond to each other, and the second output electrodes 232 of the two power modules 2 The position of the third output electrode 233 of the two power modules 2 corresponds to the upper and lower positions. It should be noted that one of the power modules 2 is programmed through the interior thereof so that the two powers are The first output electrode 231, the second output electrode 232, and the third output electrode 233 of the module 2 are vertically connected. The heat dissipating member 24 is disposed on the second surface 212 and penetrates into the heat dissipation region 115 of the heat dissipation frame 11 via the corresponding opening 112, so that the heat dissipation members 24 of the two power modules 2 are opposite to each other, and the heat dissipation member 24 is more in this embodiment. The shape of the heat sink, but not limited to it, can also be other forms such as heat sink fins.

Referring to FIG. 3 and FIG. 12 , the current input and conduction unit 3 is electrically connected between the film capacitor 20 of the DC power source and the input electrode units 22 of the power modules 2 , and includes an electrical connection to each of the power modules 2 . The first positive bus bar 31 between the first positive electrode 221 and the first negative bus bar 32 electrically connected to the first negative electrode 222 of each power module 2 are electrically connected to each of the power modes. a second positive bus bar 33 between the second positive electrodes 223 of the group 2, a second negative current bus bar 34 electrically connected between the second negative electrodes 224 of each of the power modules 2, and one electrically connected to each A third positive bus bar 35 between the third positive electrodes 225 of the power module 2 and a third negative bus bar 36 electrically connected between the third negative electrodes 226 of the power modules 2 . The first positive bus bar 31 is electrically connected between the first positive electrode 221 of the two power modules 2 and the first input positive electrode 201 of the thin film capacitor 20 . The first negative bus bar 32 is electrically connected between the first negative electrode 222 of the two power modules 2 and the first input negative electrode 202 of the thin film capacitor 20 . The second positive bus bar 33 is electrically connected between the second positive electrode 223 of the two power modules 2 and the second input positive electrode 203 of the film capacitor 20 . The second negative bus bar 34 is electrically connected between the second negative electrode 224 of the two power modules 2 and the second input negative electrode 204 of the film capacitor 20 . The third positive bus bar 35 is electrically connected between the third positive electrode 225 of the two power modules 2 and the third input positive electrode 205 of the film capacitor 20 . The third negative bus bar 36 is electrically connected between the third negative electrode 226 of the two power modules 2 and the third input negative electrode 206 of the film capacitor 20 .

Referring to FIG. 3 and FIG. 11 , the current output conducting unit 4 is electrically connected between the output electrode unit 23 and the motor (not shown), and includes a first output electrode 231 electrically connected to the two power modules 2 . a first bus bar 41 connected to the motor, a second bus bar 42 electrically connected between the second output electrode 232 of the two power modules 2 and the motor, and a second electrically connected to the two power modules 2 The third bus bar 43 between the third output electrode 233 and the motor.

Referring to FIG. 1 , FIG. 3 , FIG. 11 and FIG. 12 , the following describes the operation flow of the stacked inverter 10 of the present invention. First, the film capacitor 20 firstly passes through the first to third input positive electrodes 201 , 203 , 205 and the first to the first The three input negative electrodes 202, 204, and 206 transmit the direct current to the first to third positive electrodes 221, 223, 225 and the first to third negative electrodes 222, 224, 226 of the power module 2 through the current input conducting unit 3, through The power modules 2 convert the direct current into three-phase alternating current, and then output the three-phase alternating current to the motor through the current output conducting unit 4. During this process, the temperature of the two power modules 2 will gradually increase. At this time, the coolant can be input into the liquid flow path 111 via the first liquid inlet 113 or the second liquid inlet 119, due to the two electric modes. The heat dissipating members 24 of the group 2 respectively extend into the heat dissipating region 115 of the liquid flow path 111. Therefore, during the flow of the cooling liquid in the heat dissipating region 115, the heat dissipating members 24 of the two power modules 2 are simultaneously cooled, so that the two electric powers are The module 2 is cooled down, so that the cooling degree of the two power modules 2 will tend to be consistent, and the temperature difference between the two power modules 2 can be effectively reduced, so that the stability of the current output is improved.

In summary, the push-pull inverter of the present invention, through the cooling liquid poured into the liquid flow path 111, dissipates the heat sink 24 of the power modules 2 that penetrate the heat dissipation zone 115 through the openings 112. Cooling is performed to further dissipate heat from the two power modules 2 at the same time. In addition, since the power modules 2 are cooled only through one of the liquid flow paths 111, and because the liquid rectification region 116 helps to level the liquid flow rate entering the heat dissipation region 115, each of the heat dissipation members 24 is made. The heat is uniformly dissipated and the temperature difference between the power modules 2 is small, thereby improving the stability of the current output. When actually applied to an electric vehicle, the push-type inverter 10 has an optional first liquid inlet 113 and a second liquid inlet 119, and an optional first liquid outlet 114 and The two liquid outlets 121 have a more flexible space for the arrangement of the vehicle coolant line when the push-in inverter 10 is mounted. Further, while achieving the cooling purpose, since the structure of the heat dissipation frame 11 is simple, the manufacturing cost is also relatively saved. Therefore, the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

10‧‧‧Stacked inverter

20‧‧‧ Film Capacitance

201‧‧‧First input positive

202‧‧‧First input negative

203‧‧‧Second input positive

204‧‧‧Second input negative

205‧‧‧ third input positive

206‧‧‧ third input negative

1‧‧‧ Thermal Module

11‧‧‧heating frame

111‧‧‧Liquid runner

112‧‧‧ openings

113‧‧‧First inlet

114‧‧‧First outlet

115‧‧‧heating area

116‧‧‧Inlet rectification zone

116a‧‧‧External fluid rectification

116b‧‧‧Inlet liquid rectification

116c‧‧‧Friction

117‧‧‧Drainage area

117a‧‧‧Outflow Department

117b‧‧‧In the liquid discharge department

117c‧‧‧Connecting Department

118‧‧‧Into the runner

119‧‧‧Second inlet

120‧‧‧ outflow channel

121‧‧‧Second outlet

13‧‧‧Valve unit

131‧‧‧First closure

132‧‧‧Second closure

133‧‧‧ Third closure

134‧‧‧Fourth closure

14‧‧‧Transfer unit

141‧‧‧First Infusion Adapter

142‧‧‧Second fluid inlet adapter

143‧‧‧First liquid delivery adapter

144‧‧‧Second fluid delivery adapter

2‧‧‧Power Module

21‧‧‧ body

211‧‧‧ first side

212‧‧‧ second side

22‧‧‧Input electrode unit

221‧‧‧First positive electrode

222‧‧‧ first negative

223‧‧‧second positive

224‧‧‧second negative

225‧‧‧ Third positive electrode

226‧‧‧ third negative

23‧‧‧Output electrode unit

231‧‧‧First output electrode

232‧‧‧second output electrode

233‧‧‧ third output electrode

24‧‧‧ Heat sink

3‧‧‧Current input conduction unit

31‧‧‧First positive bus bar

32‧‧‧First negative bus bar

33‧‧‧Second positive bus bar

34‧‧‧Second negative bus bar

35‧‧‧ Third positive bus bar

36‧‧‧ Third negative bus bar

4‧‧‧Current output conduction unit

41‧‧‧First bus bar

42‧‧‧Second bus bar

43‧‧‧ Third Bus Bar

D1‧‧‧ direction

D2‧‧‧ direction

D3‧‧‧Up and down direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view of an embodiment of a stacked inverter of the present invention electrically connected to a film capacitor; Is an exploded view showing the connection between the embodiment and the film capacitor; FIG. 3 is an exploded perspective view showing the assembly mode of the heat dissipation module and the two power modules of the embodiment; FIG. A cross-sectional view taken along line IV-IV of FIG. 3 illustrates the internal structure of a heat dissipation frame of the heat dissipation module of the embodiment; FIG. 5 is a cross-sectional view taken along line V-V of FIG. A liquid flow path of the heat dissipation frame of the embodiment; FIG. 6 is a plan view showing the cooperation of the heat dissipation frame of the embodiment with a valve unit and an adapter unit in a use mode; FIG. 7 is a similar view to FIG. A view showing the cooperation of the heat dissipation frame of the embodiment with the valve unit and the adapter unit in another mode of use; FIG. 8 is a view similar to FIG. 6 illustrating the heat dissipation frame of the embodiment in a manner of use. In and FIG. 9 is a view similar to FIG. 6 illustrating the cooperation of the heat dissipation frame of the embodiment with the valve unit and the adapter unit in still another mode of use; FIG. 1 is a side view of the embodiment; FIG. 11 is a perspective view of the embodiment viewed from another perspective; and FIG. 12 is a partial cross-sectional view showing the heat sink of the power module of the embodiment extending through the opening into the heat dissipation frame The liquid flow path, and the coolant flow in the liquid flow path and dissipate heat from the heat sink.

Claims (10)

A stacked inverter for converting a direct current output from a direct current power source into an alternating current to output to a motor, comprising: a heat dissipation module including a heat dissipation frame, wherein the heat dissipation frame is hollowed out and defines a liquid flow path The liquid flow path has two openings respectively located at the upper and lower ends, a first liquid inlet, and a first liquid outlet; two power modules are respectively stacked on the upper and lower sides of the heat dissipation frame, and each The power module includes a first surface, a second surface opposite to the first surface, an input electrode unit, and an output electrode unit spaced apart from the input electrode unit, the second sides of the power modules are opposite to each other Oppositely and separately covering and closing the openings; a current input conducting unit electrically connected between the DC power source and the input electrode units of the power modules; and a current output conducting unit electrically connected to the outputs Between the electrode unit and the motor. The stacked inverter of claim 1, wherein each power module further includes a heat dissipating member protruding from the second surface, the heat dissipating member penetrating into the liquid flow path via the corresponding opening . The stacked inverter of claim 1 or 2, wherein the heat dissipation frame further defines an inflow channel respectively connected to the liquid flow path, and an outflow channel, the inflow prop has a first a second liquid inlet having a different direction of the liquid outlet, the outlet element having a second liquid outlet in a direction different from the first liquid outlet. The stacked inverter of claim 3, wherein the liquid flow path extends in a left-right direction, and the inflow channel and the outflow channel respectively extend in a front-rear direction perpendicular to the left-right direction. The stacked inverter of claim 3, wherein the openings are identical in shape and symmetrical to each other. The stacked inverter of claim 1 or 2, wherein the liquid flow prop has a heat dissipation area connected between the openings, and a communication between the heat dissipation area and the first liquid inlet The liquid inlet rectification zone. The stacked inverter of claim 3, wherein the heat dissipation module further comprises a valve unit, the valve unit selectively blocking one of the first liquid inlet and the second liquid inlet, And the valve unit selectively blocks one of the first liquid outlet and the second liquid outlet. The stacked inverter of claim 7, wherein the valve unit has a first closing member for controlling opening and closing of the first liquid inlet, and a second sealing member for controlling the second liquid inlet. a second closure member that opens and closes, a third closure member for controlling opening and closing of the first liquid outlet, and a fourth closure member for controlling opening and closing of the second liquid outlet. The stacked inverter of claim 4, wherein the liquid flow prop has a heat dissipation area connected between the openings, and a liquid communication between the heat dissipation area and the first liquid inlet Rectification zone. The stacked inverter of claim 9, wherein the first liquid inlet has a rectangular shape, and the liquid inlet rectification zone has a liquid inlet rectifying portion, a heat dissipation portion, and the heat dissipation portion. a liquid inlet rectifying portion connected to the region, and a tapered portion connected between the external liquid rectifying portion and the inner liquid rectifying portion, the inner liquid rectifying portion extending in a vertical direction perpendicular to the left and right direction The height is smaller than a height of the outer liquid rectifying portion extending in the vertical direction, and a cross-sectional area of the tapered portion taken along the vertical direction is gradually reduced by the outer liquid rectifying portion toward the inner liquid rectifying portion, and the inflow The passage communicates with the external liquid rectifying portion and the tapered portion, and the second liquid inlet has a circular shape.