阅读说明：本技术 一种车辆空气压缩机储能系统 (Vehicle air compressor energy storage system ) 是由 苏金龙 柳芳 文江红 于 2021-08-30 设计创作，主要内容包括：本申请公开了一种车辆空气压缩机储能系统,用于实现整车制动时的发动机能量回收,降低整车油耗。本申请包括：发动机、制动结构、空压机、空气干燥结构、第一储存气罐结构、第一控制阀、分配阀以及第二储存气罐结构；发动机分别与制动结构、空压机连接；空压机与空气干燥结构连接；空气干燥结构与分配阀连接,分配阀用于根据储能系统内部工作环境的压力变化控制第一储存气罐结构与第二储存气罐结构的充气或排气；分配阀分别与第一储存气罐结构、第二储存气罐结构连接,第二储存气罐结构用于回收或释放高压气体；第一控制阀设于空压机与第二储存气罐结构之间,第一控制阀用于控制通过第二储存气罐结构释放的高压气体的流量以及流速。(The application discloses vehicle air compressor energy storage system for engine energy recovery when realizing whole car braking reduces whole car oil consumption. The application includes: the air drying device comprises an engine, a braking structure, an air compressor, an air drying structure, a first air storage tank structure, a first control valve, a distribution valve and a second air storage tank structure; the engine is respectively connected with the braking structure and the air compressor; the air compressor is connected with the air drying structure; the air drying structure is connected with a distribution valve, and the distribution valve is used for controlling the inflation or the deflation of the first storage air tank structure and the second storage air tank structure according to the pressure change of the working environment in the energy storage system; the distribution valve is respectively connected with the first storage gas tank structure and the second storage gas tank structure, and the second storage gas tank structure is used for recovering or releasing high-pressure gas; the first control valve is arranged between the air compressor and the second air storage tank structure and used for controlling the flow and the flow speed of high-pressure air released by the second air storage tank structure.)

1. A vehicle air compressor energy storage system, comprising:

the air drying device comprises an engine, a braking structure, an air compressor, an air drying structure, a first air storage tank structure, a first control valve, a distribution valve and a second air storage tank structure;

the engine is respectively connected with the braking structure and the air compressor, the braking structure is used for braking the whole vehicle, and the air compressor is used for compressing air;

the air compressor is connected with the air drying structure, and the air drying structure is used for removing moisture in an air source;

the air drying structure is connected with the distribution valve, and the distribution valve is used for controlling the inflation or the deflation of the first storage air tank structure and the second storage air tank structure according to the pressure change of the working environment in the energy storage system;

the distribution valve is respectively connected with the first storage gas tank structure and the second storage gas tank structure, and the second storage gas tank structure is used for recovering or releasing high-pressure gas;

the first control valve is arranged between the air compressor and the second air storage tank structure, and is used for controlling the flow and the flow speed of high-pressure gas released by the second air storage tank structure.

2. The vehicle air compressor energy storage system of claim 1, wherein the braking structure comprises:

the device comprises a clutch, a gearbox, a transmission shaft, a rear axle, wheels and a brake;

the engine is connected with the clutch;

the clutch is connected with the gearbox;

the gearbox is connected with the transmission shaft;

the transmission shaft is connected with the rear axle and is used for transmitting the power of the engine to the rear axle so that the rear axle generates the driving force for the wheels;

the wheels are respectively connected with the rear axle and the brake.

3. The vehicle air compressor energy storage system of claim 2, wherein the air drying structure comprises:

a second control valve, a third control valve, and a dryer;

the second control valve is arranged between the dryer and the air compressor and is used for controlling the flow and the flow speed of the gas entering the dryer;

the third control valve is arranged between the dryer and the distribution valve, and the third control valve is used for controlling the flow and the flow rate of the distributed gas.

4. The vehicle air compressor energy storage system of claim 3, wherein the first storage tank structure comprises:

a first gas tank and a second gas tank;

the first air storage tank and the second air storage tank are connected in parallel;

the air inlets of the first air storage tank and the second air storage tank are connected with the inflation hole of the distribution valve through a pipeline;

and air outlets of the first air storage tank and the second air storage tank are connected with ports of the brake.

5. The vehicle air compressor energy storage system of claim 4, wherein the second storage tank structure comprises:

a bleed valve and a third gas tank;

the air inlet end of the deflation valve is connected with the distribution valve through a pipeline;

the air outlet end of the air release valve is connected with the air inlet of the third air storage tank;

and an air outlet of the third air storage tank is respectively connected with an air inlet end of the first control valve and a port of the brake.

6. The vehicle air compressor energy storage system of claim 5, wherein the distributor valve is configured to release subsequently generated high pressure gas into the third gas tank when the vehicle is braked and the high pressure gas stored in the first gas storage tank arrangement reaches a limit.

7. The vehicle air compressor energy storage system of claim 4, wherein air pressure sensors are disposed within the first and second air tanks for real-time detection of air pressure within the first and second air tanks.

8. The vehicle air compressor energy storage system of claim 1, further comprising: an engine electronic control unit;

and the engine electronic control unit is used for sending and receiving working signals of all structures in the energy storage system.

9. The vehicle air compressor energy storage system of claim 1, further comprising: an air cleaner;

the air filter is connected with the air compressor and is used for filtering air communicated with the air compressor.

10. The vehicle air compressor energy storage system of any one of claims 1-9, wherein the air compressor can be a screw air compressor.

Technical Field

The embodiment of the application relates to the technical field of vehicles, in particular to an energy storage system of a vehicle air compressor.

Background

The air compressor for the automobile is also called an inflating pump or a small engine, is a component assembly integrating more than one hundred parts, is mainly applied to the fields of commercial vehicles, engineering machinery, agricultural machinery and the like, and is an important part on a diesel engine.

In the traditional whole vehicle transmission process, air in an engine system is filtered, one part of the air flows to the engine to participate in engine work, the other part of the air is compressed by the air compressor to form high-pressure air, and the high-pressure air is dried by the dryer and then distributed to each air tank through the distribution valve. When a braking signal is received, high-pressure gas in the gas tank reaches the brake to push the brake to rub with the wheel brake pad, so that kinetic energy is converted into heat energy, and the vehicle is decelerated. When the pressure in the air tank exceeds the design pressure, the vent valve arranged on the distributing valve releases the generated high-pressure air, so that the safety of the brake system of the whole vehicle is ensured.

However, in the process of braking the whole vehicle, the kinetic energy of the whole vehicle can be directly converted into heat energy, and the converted heat energy can be dissipated to the environment through the radiator without recycling the energy of the engine, so that the oil consumption of the whole vehicle is high.

Disclosure of Invention

The application provides a vehicle air compressor energy storage system for engine energy recovery when realizing whole car braking reduces whole car oil consumption.

The application provides a vehicle air compressor energy storage system, includes:

the air drying device comprises an engine, a braking structure, an air compressor, an air drying structure, a first air storage tank structure, a first control valve, a distribution valve and a second air storage tank structure;

the engine is respectively connected with the braking structure and the air compressor, the braking structure is used for braking the whole vehicle, and the air compressor is used for compressing air;

the air compressor is connected with the air drying structure, and the air drying structure is used for removing moisture in an air source;

the air drying structure is connected with the distribution valve, and the distribution valve is used for controlling the inflation or the deflation of the first storage air tank structure and the second storage air tank structure according to the pressure change of the working environment in the energy storage system;

the distribution valve is respectively connected with the first storage gas tank structure and the second storage gas tank structure, and the second storage gas tank structure is used for recovering or releasing high-pressure gas;

the first control valve is arranged between the air compressor and the second air storage tank structure, and is used for controlling the flow and the flow speed of high-pressure gas released by the second air storage tank structure.

Optionally, the braking structure includes:

the device comprises a clutch, a gearbox, a transmission shaft, a rear axle, wheels and a brake;

the engine is connected with the clutch;

the clutch is connected with the gearbox;

the gearbox is connected with the transmission shaft;

the transmission shaft is connected with the rear axle and is used for transmitting the power of the engine to the rear axle so that the rear axle generates the driving force for the wheels;

the wheels are respectively connected with the rear axle and the brake.

Optionally, the air drying structure includes:

a second control valve, a third control valve, and a dryer;

the second control valve is arranged between the dryer and the air compressor and is used for controlling the flow and the flow speed of the gas entering the dryer;

the third control valve is arranged between the dryer and the distribution valve, and the third control valve is used for controlling the flow and the flow rate of the distributed gas.

Optionally, the first storage tank structure comprises:

a first gas tank and a second gas tank;

the first air storage tank and the second air storage tank are connected in parallel;

the air inlets of the first air storage tank and the second air storage tank are connected with the inflation hole of the distribution valve through a pipeline;

and air outlets of the first air storage tank and the second air storage tank are connected with ports of the brake.

Optionally, the second storage tank structure comprises:

a bleed valve and a third gas tank;

the air inlet end of the deflation valve is connected with the distribution valve through a pipeline;

the air outlet end of the air release valve is connected with the air inlet of the third air storage tank;

and an air outlet of the third air storage tank is respectively connected with an air inlet end of the first control valve and a port of the brake.

Optionally, when the whole vehicle is braked and the high-pressure gas stored in the first gas storage tank structure reaches a limit value, the distribution valve is used for releasing the subsequently generated high-pressure gas into the third gas storage tank.

Optionally, the first gas storage tank and the second gas storage tank are internally provided with a gas pressure sensor, and the gas pressure sensor is used for detecting the gas pressure in the first gas storage tank and the second gas storage tank in real time.

Optionally, the energy storage system further includes: an engine electronic control unit;

and the engine electronic control unit is used for sending and receiving working signals of all structures in the energy storage system.

Optionally, the energy storage system further includes: an air cleaner;

the air filter is connected with the air compressor and is used for filtering air communicated with the air compressor.

Optionally, the air compressor may be a screw air compressor.

According to the technical scheme, the method has the following advantages:

this application has the engine through the setting, the braking structure, the air compressor machine, the air drying structure, first storage gas pitcher structure, first control valve, the energy storage system of gas pitcher structure is stored to distributing valve and second, let the vehicle when carrying out whole car braking, the high-pressure gas that forms through the air compressor machine stores in the gas pitcher structure is stored to the second after the air drying structure is dry, carry out whole car and engine energy recuperation, release again when later-on required energy and carry out the reutilization, thereby reduce the oil consumption that whole car went.

Drawings

FIG. 1 is a schematic diagram of an overall configuration of a vehicle air compressor energy storage system in an embodiment of the present application;

FIG. 2 is another overall structural schematic diagram of the vehicle air compressor energy storage system in the embodiment of the application.

Detailed Description

The transmission system of the whole vehicle comprises a device for power connection, a speed change mechanism for changing the force, a mechanism for overcoming the difference of rotating speeds between wheels and a transmission shaft for connecting each mechanism, and is used for transmitting the power of an engine to the wheels so as to ensure the coordinated change of traction force and speed.

In the existing whole vehicle transmission system, when the system is in operation, an engine consumes fuel to generate kinetic energy, and after the kinetic energy is transmitted through a flywheel, a clutch, a gearbox, a transmission shaft and a rear axle, forward driving force is generated through friction between wheels and the ground, so that the whole vehicle is driven to run. When a driver controls the vehicle to decelerate, the clutch pedal needs to be stepped on, so that the flywheel is separated from the gearbox, a power source is cut off, meanwhile, the brake pedal is stepped on, a sensor on the brake pedal sends a braking signal to the brake, the brake converts kinetic energy into heat energy through friction with a wheel brake pad, and accordingly the vehicle decelerates or stops, and the process is called deceleration braking. However, in the process of deceleration braking, the kinetic energy of the whole vehicle can be directly converted into heat energy, and the converted heat energy can be dissipated into the environment through the radiator without recycling the energy of the engine, so that the oil consumption of the whole vehicle is higher.

With the release of GB30510-2018 limit on fuel consumption of heavy commercial vehicles, the heavy commercial vehicles step forward firmly on the energy-saving and emission-reducing road. However, in the case of a whole vehicle factory, tightening of the fuel consumption standard means that the design of the performance of the whole vehicle is more elaborate, and new technologies need to be adopted to reduce the fuel consumption of the whole vehicle.

Based on the above, the application provides an energy storage system of a vehicle air compressor, wherein a closed-loop control circuit for energy recovery of a whole vehicle is formed by connecting various components in the system, and when the whole vehicle is braked, the energy of the brake and the energy of an engine can be recovered; when the whole vehicle is accelerated, the recovered energy can be released to a transmission system for the second time to participate in the acceleration process of the whole vehicle, so that the energy of the whole vehicle is fully utilized as much as possible, and the oil consumption of the whole vehicle is reduced.

The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the present application provides a vehicle air compressor energy storage system comprising: the air drying system comprises an engine 1, a brake structure 2, an air compressor 3, an air drying structure 4, a first storage air tank structure 5, a first control valve 6, a distribution valve 7 and a second storage air tank structure 8; the engine 1 is respectively connected with a braking structure 2 and an air compressor 3, the braking structure 2 is used for braking the whole vehicle, and the air compressor 3 is used for compressing air; the air compressor 3 is connected with the air drying structure 4, and the air drying structure 4 is used for removing moisture in an air source; the air drying structure 4 is connected with a distribution valve 7, and the distribution valve 7 is used for controlling the inflation or deflation of the first storage air tank structure 5 and the second storage air tank structure 8 according to the pressure change of the working environment in the energy storage system; the distribution valve 7 is respectively connected with the first storage gas tank structure 5 and the second storage gas tank structure 8, and the second storage gas tank structure 8 is used for recovering or releasing high-pressure gas; the first control valve 6 is provided between the air compressor 3 and the second storage tank structure 8, and the first control valve 6 is used for controlling the flow rate and the flow velocity of the high-pressure gas released through the second storage tank structure 8.

Automobile brake systems are now generally divided into two types, one being hydraulic and the other being pneumatic. The hydraulic brake is that the brake master cylinder takes brake fluid as a transmission medium to be transmitted to each brake slave cylinder, thereby achieving the brake effect; the pneumatic brake uses high-pressure gas as brake medium, and then the high-pressure gas is conveyed to each brake cylinder through a pipeline to achieve the braking effect. The application is applied to the whole vehicle system supporting the air braking mode, so the braking structure 2 in the application is also a structure supporting air braking. Referring to fig. 2, the braking structure 2 of the present application may include a clutch 21, a gearbox 22, a transmission shaft 23, a rear axle 24, wheels 25, and a brake 26, wherein the engine 1 is connected to the clutch 21, the clutch 21 is connected to the gearbox 22, the gearbox 22 is connected to the transmission shaft 23, the transmission shaft 23 is connected to the rear axle 24, and the transmission shaft 23 is configured to transmit power of the engine 1 to the rear axle 24, so that the rear axle 24 generates driving force for the wheels 25; the wheels 25 are connected to the rear axle 24 and the brake 26, respectively.

As for the air drying structure 4, it is used for removing the moisture attached to the high pressure air formed by the air compressor 3, therefore, the air drying structure 4 includes a second control valve 41, a third control valve 42 and a dryer 43, the second control valve 41 is disposed between the dryer 43 and the air compressor 3, and the third control valve 42 is disposed between the dryer 43 and the distribution valve 7. The second control valve 41 is used to control the flow rate and flow rate of the high pressure gas to be dried by the dryer 43 to ensure the efficiency and drying quality of the drying gas by the dryer 43, and the third control valve 42 is used to control the flow rate and flow rate of the gas to be delivered to the distribution valve 7 for distribution.

As for the first air storage tank structure 5, two air tanks are usually required to provide compressed air to the brake 26 for braking, therefore, the first air storage tank structure 5 may comprise a first air storage tank and a second air storage tank, the first air storage tank and the second air storage tank are connected in parallel, the air inlets of the first air storage tank and the second air storage tank are connected with the charging hole of the distribution valve through a pipeline, and the air outlets of the first air storage tank and the second air storage tank are connected with the port of the brake 26. Alternatively, the gas tank structure can be simplified into an original vehicle atmosphere tank for storing compressed gas.

As for the second storage air tank structure 6, it includes a release valve 61 and a third air tank 62, the air inlet end of the release valve 61 is connected with the distribution valve 7 through a pipeline, the air outlet end is connected with the air inlet of the third air tank 62, and the air outlet of the third air tank 62 is connected with the air inlet end of the first control valve 6 and the port of the brake 26 respectively.

In order to be able to monitor and control the operating state of the energy storage system in a better way, an electronic engine control unit 9 can also be provided. The engine electronic control unit 9 may control the operation of each structure in the energy storage system by sending corresponding operation signals to each structure in the energy storage system, or may monitor the state of each structure in real time by receiving the operation signals sent by each structure in the energy storage system. In order to ensure that the concentration of impurities in the gas passing through the air compressor 3 reaches a standard, an air filter 10 may be connected to the air inlet of the air compressor 3 to filter the gas.

Optionally, air compressor 3 in this application can be a screw air compressor.

This application can realize that air compressor machine system energy storage is retrieved and release, and specific air compressor machine system energy storage recovery process is as follows: after the engine electronic control unit 9 receives a vehicle speed signal and opening degree signals of an accelerator pedal, a brake pedal and the like sent by the engine 1, a separation signal of the clutch 21, a gear signal of the gearbox 22 and a brake signal of the brake 26, it is comprehensively judged that the whole vehicle is braking according to the signals, the engine electronic control unit 9 controls the second control valve 41 to be opened, the first control valve 6 and the third control valve 42 to be closed, the braking energy of the whole vehicle is converged with the braking energy of the engine 1 and then transmitted to the air compressor 3 through the engine 1, the air compressor 3 sucks air through the air filter 10 to form high-pressure gas, and the high-pressure gas is dried by the second control valve 41 and the dryer 43 and then stored in the third air storage tank 62, so that the recovery of the braking energy is realized. Optimally, in the braking process of the whole vehicle, if the high-pressure gas in the first gas storage tank and the second gas storage tank in the first gas storage tank structure 5 is insufficient, the third gas storage tank 62 can also participate in braking. When the braking effect still does not meet the requirement in the process, the brake 26 participates in braking so as to meet the braking requirement of the whole vehicle and ensure the driving safety.

Optionally, when the pressure in the first air storage tank and the second air storage tank exceeds the preset bearing pressure, the high-pressure gas generated by the deflation valve arranged on the distribution valve 7 is released into the third air storage tank 62, so as to recover the energy of the redundant high-pressure gas of the air compressor system.

The specific energy storage and release process of the air compressor system is as follows: when the engine electronic control unit 9 receives the vehicle speed signal and the opening degree signals of the accelerator pedal, the brake pedal, etc. sent by the engine 1, the separation signal of the clutch 21, the gear position signal of the gearbox 22, and the brake signal of the brake 26, and comprehensively judges that the whole vehicle is accelerating according to the signals, the engine electronic control unit 9 controls the first control valve 6 to be opened, controls the second control valve 41 and the third control valve 42 to be closed, and controls the pressure and the flow rate of the high-pressure air flowing out of the third air storage tank 62 by controlling the opening degree of the first control valve 6 according to the initial flow rate and the gas pressure of the air compressor 3.

The high-pressure air generates power through the reverse rotation of the air compressor 3, the power is output to the engine 1, and finally reaches wheels 25 to drive the whole vehicle to run through a clutch 21, a gearbox 22, a transmission shaft 23 and a rear axle 24 in sequence. When the driving force of the whole vehicle does not meet the requirement, the engine electronic control unit 9 controls the first control valve 6 to adjust the pressure and the flow of the high-pressure air flowing out of the third air storage tank 62, so that the driving force of the whole vehicle is improved, and the closed-loop control of the energy storage and release of the air compressor system is performed. When the driving force does not meet the requirement after the process is repeatedly adjusted to the maximum, the engine 1 participates in the driving process so as to meet the acceleration requirement of the whole vehicle and ensure the dynamic requirement of the whole vehicle.

Through the above, when the vehicle brakes the whole vehicle, the high-pressure gas formed by the air compressor 3 is dried by the air drying structure 4 and then stored in the second gas storage tank structure 8, the energy recovery of the whole vehicle and the engine is carried out, and when the subsequent whole vehicle needs to be accelerated, the energy stored in the second gas storage tank structure 8 is released for secondary utilization, so that the oil consumption of the whole vehicle in running is reduced.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are intended to be illustrative only and are not intended to be limiting, since the same are not intended to be exhaustive or to limit the scope of the invention, which is defined by the appended claims, and therefore all changes in structure, proportion, and size which are within the range of the disclosed technology are not necessarily to scale.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.