阅读说明：本技术 一种混合动力液压系统及车辆 (Hybrid power hydraulic system and vehicle ) 是由 宋勇 李超 卢玮玮 夏广文 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种混合动力液压系统及车辆,所述系统包括液压油提供装置、主油路和冷却油路,所述主油路包括机械泵、电机油路、离合器油路和调压油路,所述液压油提供装置的第一出油口与所述机械泵的进油口连通；所述电机油路包括依次连通的换挡压力阀、换挡流量阀和换挡换向阀,所述离合器油路包括依次连通的离合器操作阀和离合器；所述调压油路用于调节油路中的油压；所述冷却油路包括电子泵、电子泵冷却切换阀、电机冷却支路和离合器冷却支路,所述离合器冷却支路包括依次连通的离合器压力阀和离合器冷却阀,本发明中机械泵与电子泵同时为电机冷却与离合器操作和换挡提供工作压力油,提高换挡速度和品质,从而提高系统效率。(The invention discloses a hybrid power hydraulic system and a vehicle, wherein the system comprises a hydraulic oil supply device, a main oil way and a cooling oil way, the main oil way comprises a mechanical pump, a motor oil way, a clutch oil way and a pressure regulating oil way, and a first oil outlet of the hydraulic oil supply device is communicated with an oil inlet of the mechanical pump; the motor oil circuit comprises a gear shifting pressure valve, a gear shifting flow valve and a gear shifting reversing valve which are sequentially communicated, and the clutch oil circuit comprises a clutch operating valve and a clutch which are sequentially communicated; the pressure regulating oil way is used for regulating oil pressure in the oil way; the cooling oil path comprises an electronic pump, an electronic pump cooling switching valve, a motor cooling branch and a clutch cooling branch, wherein the clutch cooling branch comprises a clutch pressure valve and a clutch cooling valve which are sequentially communicated.)

1. A hybrid power hydraulic system is characterized by comprising a hydraulic oil supply device (1), a main oil way and a cooling oil way, wherein the main oil way comprises a mechanical pump (2), a motor oil way, a clutch oil way and a pressure regulating oil way, and a first oil outlet of the hydraulic oil supply device (1) is communicated with an oil inlet of the mechanical pump (2);

the motor oil path, the clutch oil path and the pressure regulating oil path are all communicated with an oil outlet of the mechanical pump (2), the motor oil path comprises a gear shifting pressure valve (3), a gear shifting flow valve (4) and a gear shifting reversing valve (5) which are sequentially communicated, the oil outlet of the gear shifting flow valve (4) is communicated with a first motor (6), and the oil outlet of the gear shifting reversing valve (5) is communicated with a second motor (7); the clutch oil circuit comprises a clutch operating valve (8) and a clutch (9) which are communicated in sequence; the pressure regulating oil path comprises a pilot pressure regulating valve (10) and a main pressure regulating valve (11) which are sequentially communicated, a first pressure regulating port of the main pressure regulating valve (11) is communicated with an oil outlet of the mechanical pump (2), and a second pressure regulating port of the main pressure regulating valve (11) is communicated with the cooling oil path;

the cooling oil path comprises an electronic pump (12), an electronic pump cooling switching valve (13), a motor cooling branch and a clutch cooling branch, a second oil outlet of the hydraulic oil supply device (1) is communicated with an oil inlet of the electronic pump (12), an oil outlet of the electronic pump (12) is communicated with the main oil path and the electronic pump cooling switching valve (13) respectively, the motor cooling branch and the clutch cooling branch are communicated with an oil outlet of the electronic pump cooling switching valve (13), the motor cooling branch is used for cooling the first motor (6) and the second motor (7), and the clutch cooling branch comprises a clutch pressure valve (14) and a clutch cooling valve (16) which are communicated in sequence.

2. A hybrid hydraulic system according to claim 1, characterized in that the system further comprises a lubrication oil path, the lubrication oil path comprises a gear lubrication valve (20), the third oil outlet of the hydraulic oil supply device (1) is communicated with the oil inlet of the gear lubrication valve (20), and the oil outlet of the gear lubrication valve (20) is used for splashing lubrication oil to the shaft teeth.

3. A hybrid hydraulic system according to claim 2, characterized in that the oil outlet of the mechanical pump (2) is also in communication with the lubrication oil circuit, the third pressure regulating port of the main pressure regulating valve (11) being in communication with the lubrication oil circuit.

4. A hybrid hydraulic system according to claim 1, characterized in that the electric pump cooling switching valve (13) communicates with the main oil passage, and the opening and closing of the electric pump cooling switching valve (13) is controlled by the oil pressure in the main oil passage.

5. A hybrid hydraulic system according to claim 1, characterized in that the electric machine cooling branch comprises a radiator (15), the radiator (15) being in communication with a first electric machine cooling valve (17) and a second electric machine cooling valve (18), respectively.

6. A hybrid hydraulic system according to claim 5, characterized in that the radiator (15) also communicates with the clutch pressure valve (14).

7. A hybrid hydraulic system according to claim 1, characterized in that a pressure filter is arranged on the oil outlet of the hydraulic oil supply device (1), the main oil path and the cooling oil path, and the pressure filter is used for cleaning oil.

8. A hybrid hydraulic system according to claim 1, characterized in that the electric pump (12) is connected to a control motor (19), said control motor (19) being adapted to control the operation of the electric pump (12).

9. A hybrid hydraulic system according to claim 1, characterized in that the first electric machine (6) is a TM machine and the second electric machine (7) is an ISG machine.

10. A vehicle, which is a hybrid vehicle, characterized in that it comprises a hybrid hydraulic system according to any one of claims 1 to 9.

Technical Field

The invention relates to the field of vehicle control, in particular to a hybrid power hydraulic system and a vehicle.

Background

With the environmental pollution and increasingly strict fuel consumption and emission regulations at home and abroad, various automobile companies are forced to develop power systems with ultrahigh fuel economy, and a hybrid power system which gives consideration to both fuel economy and technical maturity becomes an ideal choice at the present stage. Hybrid vehicles employ hybrid drive technology, the power sources of which include a hybrid electric machine and an engine. The hybrid driving technology is that a driving motor is added in a traditional engine gearbox power system to complete hybrid output of power of an engine and the motor.

Similar hybrid transmissions on the market typically operate with shifting and cooling performed separately, typically with oil cooling for motor cooling and electronic or clutch operators for clutch and synchronizer shifting, thus separating the shifting and clutch control from motor cooling, increasing system cost and also increasing system space.

Therefore, new technical solutions are urgently needed to solve the defects of the prior art.

Disclosure of Invention

In view of the above problems in the prior art, an object of the present invention is to provide a hybrid hydraulic system and a vehicle, which are designed to solve the problems of shifting and motor cooling of a parallel shaft type two-gear or multi-gear hybrid transmission.

In order to solve the technical problems, the specific technical scheme of the invention is as follows:

on one hand, the invention provides a hybrid power hydraulic system which comprises a hydraulic oil supply device, a main oil way and a cooling oil way, wherein the main oil way comprises a mechanical pump, a motor oil way, a clutch oil way and a pressure regulating oil way;

the motor oil path, the clutch oil path and the pressure regulating oil path are all communicated with an oil outlet of the mechanical pump, the motor oil path comprises a gear shifting pressure valve, a gear shifting flow valve and a gear shifting reversing valve which are sequentially communicated, the oil outlet of the gear shifting flow valve is communicated with a first motor, and the oil outlet of the gear shifting reversing valve is communicated with a second motor; the clutch oil circuit comprises a clutch operating valve and a clutch which are communicated in sequence; the pressure regulating oil path comprises a pilot pressure regulating valve and a main pressure regulating valve which are sequentially communicated, a first pressure regulating port of the main pressure regulating valve is communicated with an oil outlet of the mechanical pump, and a second pressure regulating port of the main pressure regulating valve is communicated with the cooling oil path;

the cooling oil path comprises an electronic pump, an electronic pump cooling switching valve, a motor cooling branch and a clutch cooling branch, a second oil outlet of the hydraulic oil supply device is communicated with an oil inlet of the electronic pump, an oil outlet of the electronic pump is communicated with the main oil path and the electronic pump cooling switching valve respectively, the motor cooling branch and the clutch cooling branch are communicated with an oil outlet of the electronic pump cooling switching valve, the motor cooling branch is used for cooling the first motor and the second motor, and the clutch cooling branch comprises a clutch pressure valve and a clutch cooling valve which are communicated in sequence.

Furthermore, the system also comprises a lubricating oil path, the lubricating oil path comprises a gear lubricating valve, a third oil outlet of the hydraulic oil supply device is communicated with an oil inlet of the gear lubricating valve, and an oil outlet of the gear lubricating valve is used for splashing lubricating oil to the shaft teeth.

Further, an oil outlet of the mechanical pump is also communicated with the lubricating oil path, and a third pressure regulating port of the main pressure regulating valve is communicated with the lubricating oil path.

Further, the electronic pump cooling switching valve is communicated with the main oil passage, and the opening and closing of the electronic pump cooling switching valve are controlled by the oil pressure in the main oil passage.

Further, the motor cooling branch comprises a radiator, and the radiator is communicated with the first motor cooling valve and the second motor cooling valve respectively.

Further, the radiator is also in communication with the clutch pressure valve.

Furthermore, the oil outlet of the hydraulic oil supply device, the main oil way and the cooling oil way are all provided with pressure filters, and the pressure filters are used for cleaning oil.

Furthermore, the electronic pump is connected with a control motor, and the control motor is used for controlling the electronic pump to work.

Optionally, the first motor is a TM motor, and the second motor is an ISG motor.

In another aspect, the invention further provides a vehicle, wherein the vehicle is a hybrid vehicle, and the vehicle comprises the hybrid hydraulic system provided above.

By adopting the technical scheme, the hybrid power hydraulic system and the vehicle have the following beneficial effects that:

1. according to the hybrid power hydraulic system and the vehicle, the mechanical pump and the electronic pump simultaneously provide working pressure oil for motor cooling and clutch operation and gear shifting, parts are saved, the structure is compact, and the working efficiency of the system is improved.

2. According to the hybrid power hydraulic system and the vehicle, the intelligent switching of the motor cooling oil provided by the electronic pump or the oil used by other systems such as gear shifting and the like is completed through the hydraulic control electronic pump cooling switching valve loop, and the power load of the electronic pump is reduced.

3. According to the hybrid power hydraulic system and the vehicle, the clutch cooling valve associated with the control of the clutch pressure valve is opened and closed, the supply of the clutch cooling oil is realized, and the cost is reduced

4. According to the hybrid power hydraulic system and the vehicle, the ISG gear and the TM gear are switched through the cooperative work of the gear shifting pressure valve, the gear shifting flow valve and the gear shifting reversing valve, the number of parts when ISG gears and TM gears are respectively controlled is reduced, and the cost is reduced.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic diagram of a hybrid hydraulic system according to the present invention.

In the figure: 1-hydraulic oil supply device, 2-mechanical pump, 3-shift pressure valve, 4-shift flow valve, 5-shift change valve, 6-first motor, 7-second motor, 8-clutch operation valve, 9-clutch, 10-pilot pressure regulating valve, 11-main pressure regulating valve, 12-electronic pump, 13-electronic pump cooling switching valve, 14-clutch pressure valve, 15-radiator, 16-clutch cooling valve, 17-first motor cooling valve, 18-second motor cooling valve, 19-control motor, 20-gear lubrication valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.