Mechanical-hydraulic compound energy recycling system based on flywheel and energy accumulator

Abstract

The invention discloses a mechanical-hydraulic compound energy recycling system based on a flywheel and an energy accumulator. The mechanical-hydraulic compound energy recycling system is composed of a transmission device and an energy storage device, and the energy storage device is connected to the transmission device; the flywheel is separated from the energy accumulator through a gear box, and when a vehicle brakes or slows down, a part of braking energy can be stored in the flywheel directly to serve as kinetic energy of the flywheel; compared with an existing compound energy storage system, energy transformation between mechanical energy, hydraulic energy and mechanical energy is omitted, and the use ratio of energy is improved undoubtedly; and when a large amount of energy needs to be stored, the flywheel has an advantage over the energy accumulator, the flywheel and the energy accumulator also can make contact with each other, and the energy accumulator can store energy for a long time. According to the mechanical-hydraulic compound energy recycling system, the flywheel can drive a hydraulic pump / motor to rotate through mechanical power transmissions such as bevel gears and clutches, the hydraulic pump / motor work as a hydraulic pump, then the kinetic energy of the flywheel is transformed to hydraulic energy to be stored in the energy accumulator, and therefore waste of energy is avoided.

Description

technical field [0001] The invention relates to the field of energy recovery, in particular to a machine-hydraulic composite energy recovery system of a flywheel and an accumulator. Background technique [0002] In the existing energy recovery system, although the accumulator can be used as an energy storage element, the power density is high, but its energy density is low; the flywheel is used as an energy storage element, the power density is low, but its energy density is high, and it is usually used for the recovery of mechanical energy ; [0003] The existing method of mechanical-fluid composite energy storage, such as the Chinese invention patent application, application publication number: CN104776067A, is to make the flywheel and accumulator into one component. Although this method can also recover energy, it is extremely difficult to manufacture a prototype , and the airtightness of the flywheel accumulator needs to be considered, the cost is high, and it is not co...

AI Technical Summary

Problems solved by technology

[0005] In the patent application publication number CN102897012A, although there are both flywheels and accumulators, when the car brakes, all energy is first converted into hydraulic energy, part of which is stored in the accumulator, and the other part is converted into mechanical energy and converted into In the flywheel, that is, the energy in the flywheel is converted from mechanical energy-hydraulic energy-mechanical energy, and the repeated conversion of energy greatly reduces the utilization rate of energy

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