WO2021149214A1 - 電気機器ユニット - Google Patents

電気機器ユニット Download PDF

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Publication number
WO2021149214A1
WO2021149214A1 PCT/JP2020/002271 JP2020002271W WO2021149214A1 WO 2021149214 A1 WO2021149214 A1 WO 2021149214A1 JP 2020002271 W JP2020002271 W JP 2020002271W WO 2021149214 A1 WO2021149214 A1 WO 2021149214A1
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WO
WIPO (PCT)
Prior art keywords
case
partition wall
opening
space
flow path
Prior art date
Application number
PCT/JP2020/002271
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English (en)
French (fr)
Japanese (ja)
Inventor
博人 日下
Original Assignee
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to PCT/JP2020/002271 priority Critical patent/WO2021149214A1/ja
Priority to JP2021572212A priority patent/JPWO2021149214A1/ja
Publication of WO2021149214A1 publication Critical patent/WO2021149214A1/ja

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the technology disclosed in this specification relates to an electric device unit in which the inside of a case is divided into a plurality of spaces and an electric device is housed in each space.
  • the first case is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant supplied from the refrigerant inlet flows through the flow path of the first case and the flow path of the second case, and is discharged from the refrigerant outlet.
  • a heat sink is sandwiched between the first case and the second case, and a refrigerant flow path is provided in the heat sink.
  • the electrical device in the first case and the electrical device in the second case are cooled by a heat sink.
  • the technology disclosed herein provides an electrical equipment unit that facilitates disassembly of the case and attachment / detachment of electrical devices inside the case.
  • the electrical equipment unit disclosed in the present specification includes a first case, a second case, a first cover, a second cover, and first to third electrical devices.
  • the first case has a first opening and a second opening on the opposite side of the first opening.
  • the first case further has a first partition wall that divides the internal space into a first opening side and a second opening side.
  • the second case has a third opening and a fourth opening on the opposite side of the third opening.
  • the second case further has a second partition wall that divides the internal space into a third opening side and a fourth opening side.
  • the third opening side is connected to the second opening side of the first case.
  • the first cover covers the first opening and the second cover covers the fourth opening.
  • the first electric device is housed in the first space between the first cover and the first partition wall.
  • the second electrical device is housed in a second space between the first partition wall and the second partition wall.
  • the third electrical device is housed in a third space between the second partition wall and the second cover.
  • a flow path through which the refrigerant passes is provided in the second partition wall, and the flow path is independent of the first case.
  • the flow path provided in the second partition wall of the second case is independent of the first case, the flow path when the first case is separated from the second case.
  • the liquid refrigerant remaining inside does not leak. Therefore, the case can be easily disassembled and the internal electric device can be easily attached and detached.
  • FIG. 1 It is a block diagram of the electric vehicle including the electric equipment unit of an Example. It is a top view of the electric appliance unit of an Example. It is sectional drawing of the electric equipment unit cut by the line III-III of FIG. It is sectional drawing of the electric equipment unit cut by the line III-III of FIG. 2 (the case is disassembled). It is a top view of the electric equipment unit which removed the upper cover. It is sectional drawing of the electric equipment unit cut by the VI-VI line of FIG.
  • FIG. 1 shows a block diagram of an electric vehicle 200 including an electric device unit 10.
  • the electric vehicle 200 travels by driving the traveling motor 203 with the power of the main battery 201.
  • the electrical equipment unit 10 has a function of distributing the electric power of the main battery 201 to some other equipment.
  • the broken line rectangle in FIG. 1 represents the case 100 of the electrical equipment unit 10.
  • the case 100 is provided with five connectors 19a-19e.
  • a power cable for transmitting the power of the main battery 201 is connected to the connector 19a.
  • the power cable of the air conditioner 204 driven by the electric power of the main battery 201 is connected to the connector 19b.
  • the power cable of the inverter 202 is connected to the connector 19c.
  • the inverter 202 is a device that converts the DC power of the main battery 201 into three-phase alternating current for driving the traveling motor 203.
  • Other electrical devices may be housed in the case 100, but their illustration and description will be omitted.
  • Sub-battery cables 207 and 208 that distribute the power of the sub-battery 205 are connected to the connector 19d.
  • the cable of the AC inlet 209 is connected to the connector 19e.
  • a power supply device outside the vehicle is connected to the AC inlet 209.
  • the output power of the main battery 201 is 100 volts or more, and a DC voltage of 100 volts or more is applied to the terminals of the connectors 19a, 19b, and 19c.
  • a voltage of 100 volt AC or 200 volt AC supplied from a power supply device outside the vehicle is applied to the connector 19e.
  • the case 100 of the electric device unit 10 houses a high voltage distributor 31, a high voltage relay 32, a voltage converter 33, a charger 34, and a controller 30.
  • the high-voltage distributor 31 distributes the power of the main battery 201 supplied through the connector 19a to the high-voltage relay 32 and the connector 19b. As described above, the power cable of the air conditioner 204 is connected to the connector 19b.
  • the high voltage relay 32 connects the inverter 202 to the main battery 201 or cuts off the inverter 202 from the main battery 201.
  • the high voltage relay 32 is controlled by the controller 30.
  • the controller 30 is composed of an arithmetic unit (Central Processing Unit: CPU) mounted on a substrate, a memory, and various semiconductor chips.
  • the controller 30 closes the high voltage relay 32 when the main switch (not shown) of the vehicle is turned on. When the high voltage relay 32 is closed, the electric vehicle 200 is ready to run.
  • the controller 30 opens the high voltage relay 32 when the main switch is turned off, and shuts off the inverter 202 from the main battery 201.
  • the controller 30 also controls the charger 34 and the voltage converter 33.
  • the voltage converter 33 steps down the voltage of the output power of the main battery 201 and outputs it to the connector 19d.
  • the sub-battery 205 is connected to the connector 19d.
  • the rated voltage of the sub-battery 205 is 12 volts, and the voltage converter 33 lowers the voltage of the power of the main battery 201 to the rated voltage (12 volts) of the sub-battery 205.
  • the sub-battery cables 207 and 208 are stretched inside the vehicle, and various low-power devices such as a room lamp 206 are connected to the sub-battery cables 207 and 208.
  • the power-saving device connected to the sub-battery 205 may be collectively referred to as an auxiliary device.
  • the charger 34 converts the AC power supplied from the outside of the vehicle through the AC inlet 209 into DC power and supplies it to the main battery 201. That is, the charger 34 is an AC / DC converter.
  • FIG. 2 shows a plan view of the case 100 of the electrical equipment unit 10.
  • FIG. 3 shows a cross-sectional view of the electrical equipment unit 10 along the lines III-III of FIG.
  • the + Z direction of the coordinate system in the figure corresponds to "up".
  • the case 100 of the electrical equipment unit 10 is composed of an upper case 110, a lower case 120, an upper cover 131, and a lower cover 132.
  • FIG. 4 is a cross-sectional view corresponding to FIG. 3, which is an exploded cross-sectional view of the case 100. The layout of parts inside the case 100 will be described with reference to FIGS. 2 to 4.
  • the case 100 has a three-layer structure divided into a first space 101, a second space 102, and a third space from the top.
  • the upper case 110 is open at the top and bottom (upper opening 110a and lower opening 110b).
  • the upper opening 110a is covered with the upper cover 131.
  • the upper cover 131 is fixed to the upper case 110 with a plurality of bolts 133.
  • the upper case 110 includes a first partition wall 111 that divides the internal space into upper and lower halves, and the space surrounded by the first partition wall 111 and the upper cover 131 is the first space 101.
  • FIG. 2 among the plurality of bolts 133 for fixing the upper cover 131 to the upper case 110, only one bolt is designated by the reference numeral 133, and the remaining bolts are omitted from the reference numerals.
  • the lower case 120 is connected under the upper case 110.
  • the lower case 120 is also open at the top and bottom (upper opening 120a and lower opening 120b).
  • the lower opening 120b is closed by the lower cover 132.
  • the lower cover 132 is fixed to the lower case 120 with a plurality of bolts 135.
  • the lower case 120 is provided with a second partition wall 121 that divides the internal space into upper and lower parts.
  • the space surrounded by the second partition wall 121 and the lower cover 132 is the third space 103.
  • the lower case 120 is connected under the upper case 110 with a plurality of bolts 134.
  • the space surrounded by the first partition wall 111 and the second partition wall 121 is the second space 102.
  • FIG. 2 of the plurality of bolts 134 for fixing the upper case 110 to the lower case 120, only one bolt is designated by a reference numeral 134, and the remaining bolts are designated by a reference numeral.
  • the high voltage distributor 31, the high voltage relay 32, and the controller 30 are housed in the first space 101.
  • the outer wall of the upper case 110 is provided with connectors 19a, 19b, 19c, and 19d (see FIG. 2). In the cross section of FIG. 3, only the connector 19a is visible.
  • the voltage converter 33 is housed in the second space 102, and the charger 34 is housed in the third space 103.
  • a connector 19e is provided on the outer wall of the lower case 120. The connector 19e is visible in the cross section of FIG.
  • a flow path 123 through which a liquid refrigerant passes is formed in the second partition wall 121 of the lower case 120.
  • the upper part of the flow path 123 of the second partition wall 121 is open (opening 123a), and the opening 123a is closed by the base plate 127.
  • the voltage converter 33 is fixed to the upper surface of the base plate 127.
  • a gasket 124 is arranged around the flow path 123, and the gasket 124 seals between the periphery of the flow path 123 and the base plate 127.
  • a refrigerant inlet 125 and a refrigerant outlet 126 are provided on the outer wall of the lower case 120, and the refrigerant inlet 125 and the refrigerant outlet 126 communicate with the flow path 123.
  • the refrigerant inlet 125 and the refrigerant outlet 126 are shown in FIG. 2, and the refrigerant inlet 125 is also shown in FIG. In the cross-sectional view of FIG. 4, it is shown that the refrigerant inlet 125 and the flow path 123 communicate with each other.
  • the flow path 123 is curved in a U shape when viewed from above, and one end of the U-shaped arm is connected to the refrigerant inlet 125 and the other end is connected to the refrigerant outlet 126.
  • the charger 34 is fixed to the lower surface 121a of the second partition wall 121 of the lower case 120. In other words, the charger 34 is fixed to the surface of the second partition wall 121 on the side of the lower opening 120b.
  • FIG. 5 shows a plan view of the electrical equipment unit 10 with the upper cover 131 removed.
  • the voltage converter 33 located below the first partition wall 111 is shown by a broken line.
  • the wiring between the electric devices inside the case 100 is not shown except for the bus bar 35 described later.
  • a through hole 112 is provided in the first partition wall 111 of the upper case 110, and two bus bars 35 extending from the high voltage relay 32 in the first space 101 are through holes 112. It reaches the voltage converter 33 of the second space 102 through the above.
  • a bus bar is a conductive member with low internal resistance and is usually made of copper.
  • the two bus bars 35 are connected to the voltage converter 33 with screws (bolts 36).
  • the two bus bars 35 conduct the high voltage relay 32 and the voltage converter 33, and transmit the electric power of the main battery 201 (FIG. 1) to the voltage converter 33 via the connector 19e and the high voltage relay 32.
  • the bolt 36 can be visually recognized through the upper opening 120a when the upper cover 131 is removed. That is, when the upper cover 131 is removed, the bolt 36 is exposed and the bolt 36 can be attached and detached.
  • FIG. 6 shows a cross-sectional view of the electrical equipment unit 10 cut along the VI-VI line of FIG.
  • the first partition wall 111 of the upper case 110 is provided with a through hole 113
  • the second partition wall 121 of the lower case 120 is provided with a through hole 122.
  • the signal line 37 extending from the voltage converter 33 housed in the second space 102 passes through the through hole 113, reaches the first space 101, and is connected to the controller 30.
  • a connector 37a is provided at the tip of the signal line 37, and the connector 37a is connected to the controller 30.
  • the signal line 38 extending from the charger 34 housed in the third space 103 passes through the through holes 122 and 113, reaches the first space 101, and is connected to the controller 30.
  • a connector 38a is provided at the tip of the signal line 38, and the connector 38a is connected to the controller 30.
  • the case 100 of the electrical equipment unit 10 is composed of an upper case 110, a lower case 120, an upper cover 131, and a lower cover 132.
  • the upper case 110 has upper and lower openings (upper opening 110a, lower opening 110b). Further, the upper case 110 has a first partition wall 111 that divides the internal space into upper and lower parts.
  • the lower case 120 also has upper and lower openings (upper opening 120a, lower opening 120b).
  • the lower case 120 also has a second partition wall 121 that divides the internal space into upper and lower parts.
  • the upper opening 110a of the upper case 110 is covered with the upper cover 131, and the lower opening 120b of the lower case 120 is covered with the lower cover 132.
  • the lower case 120 is connected under the upper case 110. At this time, the lower opening 110b of the upper case 110 and the upper opening 120a of the lower case 120 are coupled.
  • the high voltage distributor 31 and the high voltage relay 32 are housed in the first space 101 between the first partition wall 111 of the upper case 110 and the upper cover 131. Some connectors are also housed in the first space 101. Another electric device other than the high-voltage distributor 31, the high-voltage relay 32, and the connector may be housed in the first space 101.
  • the voltage converter 33 is housed in the second space 102 between the first partition wall 111 and the second partition wall 121, and the charger 34 is housed in the third space 103 between the second partition wall 121 and the lower cover 132.
  • An electric device different from the voltage converter 33 may be housed in the second space 102, and an electric device different from the charger 34 may be housed in the third space 103.
  • a flow path 123 through which a liquid refrigerant passes is provided in the second partition wall 121.
  • the upper part of the flow path 123 is open (opening 123a), and the opening 123a is closed by the base plate 127.
  • a voltage converter 33 is fixed on the upper surface of the base plate 127.
  • the charger 34 is fixed to the lower surface 121a of the second partition wall 121 (the surface on the side of the lower opening 120b of the second partition wall 121). The voltage converter 33 and the charger 34 are cooled by the refrigerant flowing through the flow path 123.
  • the flow path 123 provided in the second partition wall 121 is independent of the upper case 110. In other words, the flow path 123 of the second partition wall 121 is separated from the upper case 110. In other words, the flow path 123 of the second partition wall 121 does not lead to the upper case 110. Therefore, when the upper case 110 is separated from the lower case 120, the flow path 123 is not affected and the refrigerant does not leak.
  • the voltage converter 33 is fixed to the base plate 127, and the base plate 127 covers the opening 123a above the flow path 123. To attach / detach the voltage converter 33, the entire base plate 127 may be replaced.
  • the charger 34 is larger than the voltage converter 33 and generates a large amount of heat. Since the charger 34 is fixed to the lower surface 121a of the second partition wall 121 having the flow path 123, it is strongly cooled.
  • the bolt 36 of the second space 102 is exposed through the through hole 112 of the first partition wall 111.
  • the bolt 36 connects the high voltage relay 32 in the first space 101 and the voltage converter 33 in the second space 102.
  • the high voltage relay 32 also conducts with the charger 34 in the third space 103 through another bus bar.
  • the upper case 110 can be separated from the lower case 120 by removing the bolt 36, removing the connectors 37a and 38a described later, and removing the connectors 37a and 38a described above.
  • the case 100 can be easily disassembled, and the electric device housed inside the case can be easily attached and detached.
  • the upper case 110 and the lower case 120 correspond to an example of the first case and the second case, respectively.
  • the upper cover 131 and the lower cover 132 correspond to an example of the first cover and the second cover, respectively.
  • the high voltage distributor 31 and the high voltage relay 32 correspond to an example of the first electric device.
  • the voltage converter 33 and the charger 34 correspond to an example of the second electric device and the third electric device, respectively.
  • the first to third electrical devices are not limited to the devices of the embodiment.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Dc-Dc Converters (AREA)
PCT/JP2020/002271 2020-01-23 2020-01-23 電気機器ユニット WO2021149214A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2020/002271 WO2021149214A1 (ja) 2020-01-23 2020-01-23 電気機器ユニット
JP2021572212A JPWO2021149214A1 (enrdf_load_stackoverflow) 2020-01-23 2020-01-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/002271 WO2021149214A1 (ja) 2020-01-23 2020-01-23 電気機器ユニット

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WO2021149214A1 true WO2021149214A1 (ja) 2021-07-29

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WO (1) WO2021149214A1 (enrdf_load_stackoverflow)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0377322U (enrdf_load_stackoverflow) * 1989-11-29 1991-08-02
JP2010035347A (ja) * 2008-07-29 2010-02-12 Hitachi Ltd 電力変換装置および電動車両
JP2012249482A (ja) * 2011-05-31 2012-12-13 Hitachi Automotive Systems Ltd 電力変換装置
JP2015164367A (ja) * 2014-02-28 2015-09-10 株式会社安川電機 電力変換装置および車両
JP2017017862A (ja) * 2015-07-01 2017-01-19 日立オートモティブシステムズ株式会社 電力変換装置
US20170063065A1 (en) * 2015-08-31 2017-03-02 Faraday&Future Inc. Inverter DC Bus Bar Assembly
JP2019187207A (ja) * 2018-04-17 2019-10-24 トヨタ自動車株式会社 電力変換器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0377322U (enrdf_load_stackoverflow) * 1989-11-29 1991-08-02
JP2010035347A (ja) * 2008-07-29 2010-02-12 Hitachi Ltd 電力変換装置および電動車両
JP2012249482A (ja) * 2011-05-31 2012-12-13 Hitachi Automotive Systems Ltd 電力変換装置
JP2015164367A (ja) * 2014-02-28 2015-09-10 株式会社安川電機 電力変換装置および車両
JP2017017862A (ja) * 2015-07-01 2017-01-19 日立オートモティブシステムズ株式会社 電力変換装置
US20170063065A1 (en) * 2015-08-31 2017-03-02 Faraday&Future Inc. Inverter DC Bus Bar Assembly
JP2019187207A (ja) * 2018-04-17 2019-10-24 トヨタ自動車株式会社 電力変換器

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