CN-122029069-A - Vehicle drive device

CN122029069ACN 122029069 ACN122029069 ACN 122029069ACN-122029069-A

Abstract

Provided is a vehicle drive device. In a driving device (100) for a vehicle, a 2 nd housing portion (92) housing an inverter module and a power supply module is arranged so as to protrude from a1 st housing portion (91) to the outside in a radial direction (R) in a partial region in a circumferential direction (C) of the 1 st housing portion (91) housing a rotating electric Machine (MG) and a power transmission mechanism (GT), and at least a partial refrigerant circuit module (2) constituting a refrigerant circuit for circulating a refrigerant for an air-conditioning in a vehicle is mounted on an outer wall of a housing (9) at a position overlapping with an outer edge portion (B) on a1 st side (Z1) in an arrangement direction of the rotating electric Machine (MG) when viewed in a width direction of the housing (9).

Inventors

Front Tian Tuoyang
Jian Bian Chongzhi

Assignees

株式会社爱信

Dates

Publication Date: 20260512
Application Date: 20240909
Priority Date: 20231024

Claims (4)

1. A vehicle drive device is characterized by comprising: a rotating electrical machine provided with a rotor; an output member that is connected to the wheel drive; a power transmission mechanism that transmits a driving force between the rotating electrical machine and the output member; An inverter module for driving and controlling the rotating electrical machine; a power supply module that is electrically connected to a vehicle-mounted battery and that includes at least one of a voltage conversion circuit that converts a voltage of the vehicle-mounted battery, a charging circuit that charges the vehicle-mounted battery from an external power source, and a power supply circuit that supplies power from the vehicle-mounted battery to the outside; A refrigerant circuit module that constitutes at least part of a refrigerant circuit for circulating a refrigerant for an in-vehicle air conditioner, and A case having a1 st case portion accommodating the rotating electric machine and the power transmission mechanism and a2 nd case portion accommodating the inverter module and the power supply module, The direction along the rotor axis, that is, the rotor axis, is set as the axial direction, the direction surrounding the rotor axis is set as the circumferential direction, the direction orthogonal to the rotor axis is set as the radial direction, The 2 nd housing part is arranged to protrude from the 1 st housing part to the outside in the radial direction in a partial region in the circumferential direction of the 1 st housing part, The direction in which the 1 st housing portion and the 2 nd housing portion are aligned is defined as an alignment direction, the side from the 1 st housing portion toward the 2 nd housing portion in the alignment direction is defined as an alignment direction 1 st side, the direction orthogonal to both the axial direction and the alignment direction is defined as a width direction, The refrigerant circuit module is mounted in an outer wall of the casing at a position that overlaps with an outer edge portion on the 1 st side in the arrangement direction of the rotary electric machine when viewed in a width direction along the width direction.
2. The vehicular drive apparatus according to claim 1, characterized in that, The refrigerant circuit module is disposed at a position overlapping at least one of the outer wall of the 1 st housing portion and the outer wall of the 2 nd housing portion when viewed in the arrangement direction along the arrangement direction.
3. The vehicular drive apparatus according to claim 1, characterized in that, Further comprising a heat exchanger that performs at least heat exchange between cooling water for cooling the inverter module and the refrigerant, The heat exchanger is mounted on a surface of the outer wall of the housing, which is opposite to a surface on which the refrigerant circuit module is mounted.
4. The vehicular drive apparatus according to any one of claims 1 to 3, characterized in that, And a cooling water pump for discharging at least cooling water for cooling the inverter module, The cooling water pump is mounted on a surface of the outer wall of the casing, which is opposite to the surface on which the refrigerant circuit module is mounted, and is mounted at a position that overlaps with an outer edge portion on the 1 st side of the arrangement direction of the rotating electrical machine when viewed in the width direction along the width direction.

Description

Vehicle drive device Technical Field The present invention relates to a vehicle drive device. Background Japanese patent application laid-open No. 2019-170077 discloses a vehicle drive device (1) comprising a rotating electric machine (rotor (20), stator (30)) that is a drive force source for wheels (803, 804), a drive control device (131) that drives and controls the rotating electric machine, a charger (136) that charges a battery (805) connected to the rotating electric machine via the drive control device (131) with electric power supplied from an external power source (900), and a case (10) (reference numerals in documents where brackets in the background art are referenced) that houses the rotating electric machine, the drive control device (131), and the charger (136). The housing (10) is mounted on a vehicle drive device (1) in the vertical direction (Z) in the vehicle-mounted posture of the vehicle, and is formed with a1 st housing chamber for housing the rotating electric machine on the lower side and a2 nd housing chamber for housing the drive control device (131) and the charger (136) on the upper side. The 1 st accommodation chamber is formed inside a cylindrical peripheral wall part (10 b) of the housing (10). The 2 nd housing chamber is formed as a rectangular box-shaped space inside a rectangular cylindrical rectangular tube section (10 e) adjacent to the upper side of the peripheral wall section (10 b) in the up-down direction (Z) on the radial outside of the peripheral wall section (10 b). A cooling unit (60) is further formed on the peripheral wall (10 b), and a cooling liquid flow path for flowing a cooling liquid along the peripheral wall (10 b) is formed in the cooling unit (60). The coolant flow path formed along the peripheral wall portion (10 b) has an inflow port (16) for inflow of coolant and an outflow port (17) for outflow of coolant on the side of the rectangular tube portion (10 e). A drive control device (131) is disposed on the upstream side of the cooling liquid flow path, which is the side near the inlet (16), and a charger (136) is disposed on the downstream side of the cooling liquid flow path, which is the side near the outlet (17). Thus, the drive control device (131) which generates heat when the rotating electric machine is driven can be efficiently cooled by the relatively cool coolant. Since the battery 805 is charged by the external power supply 900 during the vehicle stop, the temperature of the coolant is not easily increased by heat exchange with the drive control device 131, and the charger 136 is cooled appropriately even if it is disposed on the downstream side of the coolant flow path. Patent document 1 Japanese patent application laid-open No. 2019-170077 As described above, the vehicle drive device disclosed in the above document has a cooling structure capable of efficiently cooling a plurality of cooling objects. However, other devices such as an air conditioner that are objects of thermal management are also present in the vehicle. In addition, in electric vehicles which have been recently increased, it is not possible to use waste heat from an internal combustion engine as a heat source for heating in a cold phase, as in conventional vehicles which use an internal combustion engine as a main driving force source for wheels, and therefore, heating devices such as a heater type and a heat pump type are used. For a vehicle, the lighter the weight of the vehicle, the easier it is to increase energy efficiency, and proper heat utilization and heat dissipation management also contributes to the increase in energy efficiency of the vehicle. Therefore, it is preferable that the vehicle drive device having a relatively large weight percentage in the vehicle device is configured in a small size, and integrated heat management between a device requiring cooling, such as lubrication of a power system circuit such as a rotating electric machine or a circuit for driving the rotating electric machine, a friction portion of a rotating member, and a device requiring heat, such as a heating device, is performed. Disclosure of Invention In view of the above-described background, it is desirable to provide a technique of locally configuring a thermal management system of a vehicle and configuring a vehicle drive device provided with a rotating electric machine in a small size. The vehicle drive device in view of the above comprises a rotating electric machine having a rotor, an output member connected to a wheel drive, a power transmission mechanism for transmitting a driving force between the rotating electric machine and the output member, an inverter module for driving and controlling the rotating electric machine, a power supply module electrically connected to a vehicle-mounted battery and having at least one of a voltage conversion circuit for converting a voltage of the vehicle-mounted battery, a charging circuit for charging the vehicle-mounted battery from an ex