US-12617251-B2 - Power drive system and vehicle

US12617251B2US 12617251 B2US12617251 B2US 12617251B2US-12617251-B2

Abstract

Disclosed are a power drive system and a vehicle. The power drive system may include a first motor, a second motor, a first clutch, a transmission device, and an air conditioning compressor; the first motor may be in transmission connection to the air conditioning compressor via a first transmission path, and may be in transmission connection to the transmission device via a second transmission path; the second motor may be in transmission connection to the air conditioning compressor; and the first clutch may be disposed on the first transmission path for connection or disconnection of the first transmission path.

Inventors

Yao Liu
Liwen Jiang
Kai Wu
Hongguang SHI

Assignees

CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Dates

Publication Date: 20260505
Application Date: 20230828

Claims (11)

1 . A power drive system for a vehicle, comprising a first motor, a second motor, a first clutch, a transmission structure, and an air conditioning compressor, the first motor being in transmission connection to the air conditioning compressor via a first transmission path, the second motor also being in transmission connection to the air conditioning compressor; the first motor being further in transmission connection to the transmission structure via a second transmission path for transmitting power of the first motor to drive wheels of the vehicle; the first clutch being disposed on the first transmission path for connection or disconnection of the first transmission path, wherein the power drive system further comprises a second clutch, and the second clutch is disposed in the second transmission path for connection or disconnection of the second transmission path, the first transmission path comprises a first connection portion and a second connection portion that can be connected or disconnected through the first clutch, the first connection portion is in transmission connection to an output end of the first motor, and the second connection portion is in transmission connection to an input end of the air conditioning compressor, the second transmission path comprises a third connection portion and a fourth connection portion that can be connected or disconnected through the second clutch, the third connection portion is in transmission connection to the output end of the first motor, and the fourth connection portion is in transmission connection to an input end of the transmission structure, and the first connection portion and the third connection portion are directedly interconnected or integrally formed.
2 . The power drive system according to claim 1 , wherein a rate of work of the first motor is greater than a rate of work of the second motor.
3 . The power drive system according to claim 1 , wherein the first motor comprises a first output end and a second output end, the first output end is connected to the first connection portion, and the second output end is connected to the third connection portion.
4 . The power drive system according to claim 1 , wherein the second connection portion is in transmission connection to the input end of the air conditioning compressor through the second motor, or, the air conditioning compressor comprises a first input end and a second input end, the first input end is connected to the second connection portion, and the second input end is connected to the second motor.
5 . The power drive system according to claim 1 , wherein the power drive system is configured to perform a first operating mode; and in the first operating mode, the first motor operates, the second motor does not operate, the first clutch is disengaged, the second clutch is engaged, the first motor drives the drive wheels, and the air conditioning compressor does not run.
6 . The power drive system according to claim 5 , wherein the power drive system is configured to perform a second operating mode; and in the second operating mode, the first motor operates, the second motor does not operate, both the first clutch and the second clutch are engaged, and the first motor drives the drive wheels and the air conditioning compressor.
7 . The power drive system according to claim 6 , wherein the power drive system is configured to perform a third operating mode; and in the third operating mode, both the first motor and the second motor operate, the first clutch is disengaged, the second clutch is engaged, the first motor drives the drive wheels, and the second motor drives the air conditioning compressor.
8 . The power drive system according to claim 7 , wherein the power drive system is configured to perform a fourth operating mode; and in the fourth operating mode, the first motor operates, the second motor does not operate, the first clutch is engaged, the second clutch is disengaged, and the first motor drives the air conditioning compressor.
9 . The power drive system according to claim 8 , wherein the power drive system is configured to perform a fifth operating mode; and in the fifth operating mode, the first motor does not operate, the second motor operates, both the first clutch and the second clutch are disengaged, and the second motor drives the air conditioning compressor.
10 . The power drive system according to claim 8 , wherein the power drive system further comprises a controller configured to control the power drive system to enter the fourth operating mode under a condition that the vehicle is parked and fast charged, and in the fourth operating mode, the first motor operates, the second motor does not operate, the first clutch is engaged, the second clutch is disengaged, and the first motor drives the air conditioning compressor.
11 . The vehicle, comprising the power drive system according to claim 1 .

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application is a continuation of an International Patent Application No. PCT/CN2021/132905 filed on Nov. 24, 2021, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD The present application relates to the technical field of electric vehicles, in particular to a power drive system and a vehicle. BACKGROUND At present, in the field of automotive industry, new energy vehicles have become a new trend of development, such as electric vehicles. Batteries are widely used to supply energy to electric vehicles for driving drive wheels and an air conditioning compressor of a vehicle to run. How to control the drive wheels and the air conditioning compressor to flexibly run to reduce energy consumption as much as possible on the premise of meeting requirements is one of the important research and development directions in this field. SUMMARY The present application aims to provide a power drive system and a vehicle for flexible energy supply and reduction of energy consumption. Embodiments of the present application are implemented as follows: In a first aspect, an embodiment of the present application provides a power drive system. The power drive system includes: a first motor, a second motor, a first clutch, a transmission device, and an air conditioning compressor, the first motor being in transmission connection to the air conditioning compressor via a first transmission path, the second motor also being in transmission connection to the air conditioning compressor; the first motor being further in transmission connection to the transmission device via a second transmission path for transmitting power of the first motor to drive wheels of a vehicle; the first clutch being disposed on the first transmission path for connection or disconnection of the first transmission path. In an existing power drive system, drive wheels and an air conditioning compressor are driven by a motor simultaneously, and the air conditioning compressor is driven simultaneously on the premise of ensuring the operation of the drive wheels, such that a rotation speed of the air conditioning compressor may only change with a traveling speed of the vehicle, which makes it difficult to regulate the rotation speed of the air conditioning compressor according to a temperature regulation requirement. Sometimes there is unnecessary energy consumption higher than the temperature regulation requirement, and sometimes a high temperature regulation requirement may not be met due to a low traveling requirement. In the technical solution of the present application, the first motor is connected to the air conditioning compressor via the first transmission path, and is connected to the transmission device via the second transmission path, the first clutch is disposed on the first transmission path, and meanwhile, the air conditioning compressor is further in transmission connection to the second motor. In this way, when high-speed traveling is required but the temperature regulation requirement is low, the first transmission path is disconnected through the first clutch, the first motor only drives the drive wheels, and the second motor drives or does not drive the air conditioning compressor according to the requirement to avoid unnecessary energy consumption. When there is the temperature regulation requirement but no traveling requirement, the first transmission path is disconnected through the first clutch, the first motor stops operating and rests to reduce energy consumption, and the second motor drives the air conditioning compressor to run at different rotation speeds according to the requirement to meet the temperature regulation requirement. When high-speed traveling is required and there is the high temperature regulation requirement, the first transmission path is connected through the first clutch, the drive wheels and the air conditioning compressor are driven through the first motor, and the second motor stops operating to reduce energy consumption. In other words, the drive system according to the present application may be flexibly deployed according to the traveling requirement and the temperature regulation requirement to provide a suitable drive force, thereby achieving a desirable energy-saving effect. In some embodiments of the present application, a rate of work of the first motor is greater than a rate of work of the second motor. In the above technical solution, when the temperature regulation requirement is high, the first motor with the high rate of work directly drives the air conditioning compressor, which not only meets the high temperature regulation requirement, but also allows the second motor to be provided as a motor with the low rate of work. By reducing the rate of work, the size, weight and cost of the second motor are remarkably reduced, and the operation energy consumption of the second motor is low, thereby having a desirable energy-