一种用于商用车分布式驱动系统的冷却润滑系统
By designing an independent cooling and lubrication scheme for the electric drive system of commercial vehicles' distributed drive system, and using two electronic oil pumps to provide cooling and lubrication for the electric drive system reducer and drive motor respectively, the problems of high cost and failure risk in the existing technology are solved, achieving cost savings and reduced failure risk.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN KING LONG UNITED AUTOMOTIVE IND CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
The electric drive systems of commercial vehicle oil-cooled electric motor drive axles and distributed rigid electric drive axles require four electronic oil pumps for cooling and lubrication, which increases costs, maintenance costs, and failure risks, and also affects vehicle ride comfort.
The system employs independent electric drive systems on the left and right, each equipped with a three-way connector, an oil-water heat exchanger assembly, an electronic oil pump, and an oil filter. This allows for separate cooling and lubrication of the reducer and drive motor in the electric drive system, with two electronic oil pumps providing cooling and lubrication for each of the two electric drive systems.
It reduces component and maintenance costs, lowers the risk of failure, and improves vehicle smoothness.
Smart Images
Figure CN224515894U_ABST
Abstract
Claims
1. A cooling and lubrication system for a commercial vehicle distributed drive system, characterized by, include: The electric drive system 1 (1) and electric drive system 2 (2) are independently driven and do not interfere with each other. Both electric drive system 1 (1) and electric drive system 2 (2) are equipped with a three-way connector (3), an oil-water heat exchanger assembly (4), an electronic oil pump (5), a fine cooling oil filter (6), a coarse cooling oil filter (7), an electric drive system reducer (8), and an electric drive system drive motor (9). One side of the oil-water heat exchanger assembly (4) is connected to the oil circuit of the three-way connector (3), and the other side is connected to the electronic oil pump (5). The fine cooling oil filter (6) is connected to the oil circuit of the coarse cooling oil filter (7) on one side and to the electronic oil pump (5) on the other side. The electric drive system reducer (8) and the electric drive system drive motor (9) are connected to their respective three-way connectors (3) through the oil circuit. The electric drive system reducer (8) is connected to the oil circuit of its respective coarse cooling oil filter (7) through the reducer cavity (10). The electric drive system drive motor (9) is connected to the oil circuit of its respective coarse cooling oil filter (7) through the oil pan (11).
2. A cooling and lubrication system for a distributed drive system of a commercial vehicle according to claim 1, characterized in that The oil pan (11) is divided into oil pan one and oil pan two. Oil pan one is used for the oil return collection of the electric drive system drive motor (9) on the electric drive system one (1), and oil pan two is used for the oil return collection of the electric drive system drive motor (9) on the electric drive system two (2).
3. A cooling and lubrication system for a distributed drive system of a commercial vehicle according to claim 2, characterized in that Both oil pan one and oil pan two are connected to the oil passage of the coarse cooling oil filter (7).
4. A cooling and lubrication system for a distributed drive system of a commercial vehicle according to claim 1, characterized in that, The electric drive system reducer (8) includes a primary gear meshing surface, reducer input shaft bearing 1, reducer input shaft bearing 2, secondary gear meshing surface, reducer intermediate shaft bearing 1, reducer intermediate shaft bearing 2, planetary gear meshing surface, reducer output shaft bearing 1, reducer output shaft bearing 2, reducer output shaft bearing 3, and reducer output shaft bearing 4.
5. A cooling and lubrication system for a distributed drive system of a commercial vehicle according to claim 1 or 3, characterized in that The electric drive system drives the motor (9), which includes the motor stator, motor bearing 1, motor bearing 2, and motor rotor oil slinger.