A hydraulic system suitable for automatic transmission of new energy vehicles
A technology for automatic transmissions and new energy vehicles, which is applied to components with teeth, transmission device control, fluid pressure actuation devices, etc., can solve the problems of large demand and low efficiency of oil pumps, achieve energy saving, improve economy, The effect of improving efficiency
Active Publication Date: 2020-11-03
BEIHANG UNIV
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Problems solved by technology
[0005] The purpose of the present invention is to provide a hydraulic system suitable for the automatic transmission of new energy vehicles, so as to solve the technical problems in the prior art that the hydraulic system has a large demand for oil pumps and low efficiency
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[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...
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The invention provides a hydraulic system suitable for a new energy automobile automatic transmission and relates to the technical field of hydraulic transmission. The hydraulic system comprises an oil supply pressure regulation and flow control system, a clutch gear shifting control system and a cooling and lubrication system; the oil supply pressure regulation and flow control system comprises amechanical oil pump and an electronic oil pump which are connected in parallel; the clutch gear shifting control system comprises at least two clutch control oil paths which are mutually connected inparallel; and the cooling and lubrication system comprises a plurality of cooling and lubrication oil paths which are mutually connected in parallel. The hydraulic system can expand the automatic transmission to have an arbitrary gear amount by adding the clutch control oil paths in a parallel connection manner when being applied to a pure electric automatic transmission or a special hybrid powertransmission with multiple gears, and thus being suitable for the hydraulic system for the new energy automobile automatic transmission and also a P series hybrid power system. For the hydraulic system suitable for the new energy automobile automatic transmission, by adopting a working mode of assisting a mechanical oil pump with an electronic oil pump, the efficiency of the system is improved.
Description
technical field [0001] The invention relates to the technical field of hydraulic transmission, in particular to a hydraulic system suitable for an automatic transmission of a new energy vehicle and a new energy vehicle. Background technique [0002] Automatic transmission is an important part of automobile powertrain. Its actuator is driven by hydraulic system, which has the advantages of high shift quality, high control precision and good stability. Therefore, the performance of the hydraulic system is a direct factor affecting the shifting quality of the automatic transmission. [0003] At present, in the field of pure electric vehicles, it is an effective technical solution to solve the current low mileage, insufficient power, and high motor cost by matching an automatic transmission with high performance and no power interruption; in the field of hybrid electric vehicles, the development of multiple gears The dedicated hybrid transmission with a single bit and the P-ser...
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IPC IPC(8): F16H61/02F15B11/17F15B13/06
CPCF15B11/17F15B13/06F15B2211/20576F16H61/0025F16H61/0262F16H61/0276F16H2061/0037
Inventor 刘艳芳孙文博蔡甜媛徐向阳董鹏
Owner BEIHANG UNIV