Multi-buffering energy storage device and application thereof

Patent metadata

Field	Value
Publication number	US-10801475-B2
Application number	US-201716345673-A
Country	US
Kind code	B2
Filing date	Nov 10, 2017
Priority date	Jan 22, 2017
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A multi-buffer energy accumulation apparatus comprises: an energy storage cylinder, an oil tank, a first scroll spring mechanism, a second scroll spring mechanism, a hydraulic motor, differential planetary train of gearings, and a generator; wherein the energy storage cylinder comprises a hermetically sealed cylinder body, one end of the hermetically sealed cylinder body being provided with an elastic mobile device, the other end thereof being provided with an energy transmission device, and hydraulic oil is filled in the hermetically sealed cylinder body between the elastic mobile device and the energy transmission device; the hermetically sealed cylinder body, the hydraulic motor, and the oil tank are connected via an oil circuit to form a hydraulic loop; the energy transmission device is connected with the first scroll mechanism; the hydraulic motor is connected with the second scroll spring mechanism.

First claim

What is claimed is:

1. A multi-buffer energy accumulation apparatus, comprising: an energy storage cylinder, an oil tank, a first scroll spring mechanism, a second scroll spring mechanism, a hydraulic motor, a differential planetary train of gearings, and a generator;
the energy storage cylinder comprises a hermetically sealed cylinder body, one end of the hermetically sealed cylinder body being provided with a mobile device, the other end thereof being provided with an energy transmission device, and hydraulic oil is filled in the hermetically sealed cylinder body between the mobile device and the energy transmission device;
the hermetically sealed cylinder body, the hydraulic motor, and the oil tank are connected via an oil circuit to form a hydraulic loop; the energy transmission device is connected with the first scroll spring mechanism; the hydraulic motor is connected with the second scroll spring mechanism, wherein the first scroll spring mechanism and the second scroll spring mechanism are connected to the generator via the differential planetary train of gearings.

2. The multi-buffer energy accumulation apparatus according to claim 1 , wherein the mobile device comprises, a piston rod, a piston rod head, a reset spring, a piston, a magnet wheel, and a piston permanent-magnet, wherein the piston is arranged in the hermetically sealed cylinder body, the magnet wheel is disposed inside the piston and is connected to one end of the piston rod; the piston permanent-magnet is arranged on a circumferential direction of the magnet wheel; other end of the piston rod is extended outside of the hermetically sealed cylinder body and the reset spring successively and then connected with the piston rod head.

3. The multi-buffer energy accumulation apparatus according to claim 2 , wherein the energy transmission device comprises a magneto dynamic output shaft, a cylinder bottom permanent-magnet, and a separation barrier, wherein one end of the magneto dynamic output shaft are arranged inside the hermetically sealed cylinder body, the cylinder bottom permanent-magnet is arranged on a circumferential direction of the magneto dynamic output shaft, the other end of the magneto dynamic output shaft passes out the hermetically sealed cylinder body, the separation barrier is disposed inside the hermetically sealed cylinder body and between the energy transmission device and the mobile device, and opposite sides of the cylinder bottom permanent-magnet and the piston permanent-magnet have a same polarity.

4. The multi-buffer energy accumulation apparatus according to claim 3 , wherein the piston permanent-magnet is disposed to tilt upwardly with an included angle on a circumferential direction of the magnet wheel; and the cylinder bottom permanent-magnet is disposed to tilt upwardly with an included angle on a circumferential direction of the magneto dynamic output shaft, wherein the included angle of the piston permanent-magnet is identical to that of the cylinder bottom permanent-magnet.

5. The multi-buffer energy accumulation apparatus according to claim 1 , wherein the first scroll spring mechanism and the differential planetary train of gearings are connected via a train of gearings, a sprocket mechanism or a band wheel mechanism.

6. The multi-buffer energy accumulation apparatus according to claim 3 , wherein the first scroll spring mechanism and the second scroll spring mechanism both comprise a scroll spring, a ratchet wheel, a ratchet, and a hydraulic cylinder, wherein a piston rod of the hydraulic cylinder is hinged with the ratchet, the ratchet is fitted with the ratchet wheel, and the ratchet wheel and the scroll spring are connected via a shaft.

7. The multi-buffer energy accumulation apparatus according to claim 1 , wherein the multi-buffer energy accumulation device further comprises a fly wheel via which the differential planetary train of gearings is connected with the generator.

8. The multi-buffer energy accumulation apparatus according to claim 6 , wherein the hermetically sealed cylinder body is provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet being disposed between the separation barrier and the mobile device, wherein the oil inlet is connected to the oil tank via the oil circuit, and the oil outlet being connected to the hydraulic motor and the hydraulic cylinder via two branched oil circuits, respectively.

9. The multi-buffer energy accumulation apparatus according to claim 8 , wherein an oil-in unidirectional valve is disposed on an oil circuit connecting the oil inlet with the oil tank, and an oil-out unidirectional valve is disposed on a branched oil circuit connecting the oil outlet and the hydraulic motor.

10. A working method for the multi-buffer energy accumulation apparatus according to claim 1 , comprising steps of:
when an impact object contacts a piston rod head, the piston rod moves and drives a piston to move, the piston extrudes hydraulic oil, causing the hydraulic oil to generate a pressure and meanwhile a reset spring to be compressed; the hydraulic oil with pressure controls, through a branched oil circuit of the oil outlet, hydraulic cylinders of a first scroll spring mechanism and a second scroll spring mechanism, which results in retracting of hydraulic cylinder piston rods of the first scroll spring mechanism and the second scroll spring mechanism, and the hydraulic cylinder piston rods retracting and driving a ratchet to rotate, causing the ratchet to catch a ratchet wheel;
when the piston permanent-magnet on the piston is gradually approaching a cylinder bottom permanent-magnet under an action of same magnetic polarity repulsion, a magneto dynamic output shaft rotates and drives the first scroll spring mechanism to start energy accumulation; the hydraulic oil is compressed by the piston and flows into a hydraulic motor through an oil outlet, driving the hydraulic motor to rotate, and the hydraulic motor drives the second scroll spring mechanism to start energy accumulation;
after impact of the piston rod head, the hydraulic cylinders of the first scroll spring mechanism and the second scroll spring mechanism have no the hydraulic oil, which causes piston rods of the hydraulic cylinders extend out, causing the ratchet to rotate to release the ratchet wheel, scroll springs of the first scroll spring mechanism and the second scroll spring mechanism release the accumulated energy, the energy being outputted by the first scroll spring mechanism and the second scroll spring mechanism to a fly wheel via a differential planetary train of gearings and finally outputted to a generator via the fly wheel.

Assignees

• Univ Shandong Science & Tech

Inventors

• Wang Chenglong
• Qiu Zhiwei
• Zeng Qingliang
• Chen Meng
• Liu Zhihai
• Ma Shumeng
• Wang Yue

Classifications

• F03G1/08

  for winding · CPC title

• F03G1/06

  Other parts or details · CPC title

• H02K7/14

  Structural association with mechanical loads, e.g. with hand-held machine tools or fans (with fan or impeller for cooling the machine H02K9/06) · CPC title

• F03G1/022

  using spiral springs · CPC title

• H02K7/1807 Primary

  Rotary generators (H02K7/006 takes precedence) · CPC title