Polymers for flexible energy storage devices
Biopolymers contain many hydrophilic functional groups such as -NH 2, -OH, -CONH-, -CONH 2 -, and -SO 3 H, which have high absorption affinity for polar solvent molecules and high salt solubility. Besides, biopolymers are nontoxic, renewable, and low-cost, exhibiting great potentials in wearable energy storage devices.
A review of developments in energy storage systems for hybrid excavators
The ESS (Energy Storage System) is very important in a hybrid system with ICE (Internal Combustion Engine) and motors/generators. Due to the different power requirements and ESEs (Energy Storing Element) used in hybrid systems, different structures of ESS are proposed. The goal of this paper is to give a review of the ESS in
Swing energy recovery control device of hydraulic excavator
In order to address the above problem, the technical solution used in the present invention is: a kind of hydraulic crawler excavator rotation energy recovery control device, comprise oil circuit selector valve, directional selecting valve, sequence valve, one way valve
(PDF) Control strategy of a novel energy recovery system for parallel hybrid hydraulic excavator
The recovered energy is utilized through the pilot pump of the machinery which operates as a motor, thus reducing the torque required from the internal combustion engine (ICE).
A review of developments in energy storage systems for hybrid
The ESS (Energy Storage System) is very important in a hybrid system with ICE (Internal Combustion Engine) and motors/generators. Due to the different power
What is an Accumulator in Excavator? Guide to Excavator
Overall, the battery in an excavator is a vital energy storage device that directly affects the performance and productivity of the machine. By investing in a high-quality battery, regularly maintaining it, and considering usage and work conditions, operators can ensure the longevity and efficiency of their digger''s battery.
Energies | Free Full-Text | Hydraulic Hybrid
The proposed ERS layout was designed to recover the potential energy of the boom, using a hydraulic accumulator as a storage device. The recovered energy is utilized through the pilot pump of the
Optimal Energy Management for Fuel Saving in the Fuel Cell
Abstract: This paper describes an optimal energy management approach for a fuel cell hybrid excavator (FCHE) powered by a fuel cell (FC) system and energy storage
Improvement of boom control performance for hybrid hydraulic excavator with potential energy
In hydraulic systems, energy recovery (ER) is another energy saving method which can be realized by using hydraulic or electrical energy storage devices. The hydraulic approach is to convert the recoverable energy to hydraulic form, store it in a hydraulic accumulator and release it when there are requirements [7], [8], [9] .
Potential Energy Recovery of Robotic Extractors for Low Carbon
The simulated data was sorted out to obtain the energy comparison curve of the variable displacement pump before and after adding the potential energy recovery device. In a single working cycle, the hydraulic pump in the new circuit consumes a total of 9765.36J of energy, while the hydraulic pump in the traditional circuit consumes a total of
Battery Electric Drive of Excavator Designed with Support of
of the energy storage devices, and finally to determine the most effective hybrid system layout. Electrification of excavators was described in Vauhkonen [10]. For this study, a JCB Micro excavator was chosen as a building platform. The 14 kW diesel-powered
Battery Electric Drive of Excavator Designed with Support of
of the energy storage devices, and finally to determine the most effective hybrid system layout. Electrification of excavators was described in Vauhkonen [10]. For this study, a JCB Micro
The gravitational potential energy regeneration system with closed-circuit of boom of hydraulic excavator
According to the authors, the energy consumption of the boom is reduced by 50.1% during boom operation [20,21]. A significant number of researchers report that the H-hybrid system seems to be
Parameter Matching and Control of Series Hybrid Hydraulic Excavator based on Electro-hydraulic Composite Energy Storage
storage device in the system is continuously charging and discharging with a large value, which not only has a higher requirement for the battery charging and discharging rate, but
Recent development of three-dimension printed graphene oxide and MXene-based energy storage devices
The research for three-dimension (3D) printing carbon and carbide energy storage devices has attracted widespread exploration interests. Being designable in structure and materials, graphene oxide (GO) and MXene accompanied with a direct ink writing exhibit a promising prospect for constructing high areal and volume energy
Efficiency analysis and evaluation of energy-saving pressure-compensated circuit for hybrid hydraulic excavator
Based on the developed system configuration, energy losses of the main components can be analyzed to select appropriate types and make possible improvements. Fig. 3 shows the energy distribution in the cylinder circuit with energy recovery, where a super capacitor is employed as the electrical energy storage device.
A comprehensive overview of hybrid construction
With hybrid construction machinery (HCM) attracting more attention, the powertrain configurations, energy management strategies, and energy storage devices have been presented by many scholars for
Energy recovery for hybrid hydraulic excavators: flywheel-based
Therefore, a comparison of these energy storage devices is provided in Table 3 to better clarify the fundamental differences [100,101]. Discussion on the drawbacks of the flywheel-based ERS This section mainly discusses the drawbacks of flywheels compared with other energy storage devices.
Developments in energy regeneration technologies for hydraulic excavators
This study focuses on energy regeneration technologies which can help reduce energy consumption and pollution in hydraulic excavators. First, potential recoverable energy sources in excavator mechanisms are analyzed. Next, energy regeneration systems are classified according to energy storage devices and their
Energy recovery for hybrid hydraulic excavators: flywheel-based
While in hydraulic hybrid systems, hydraulic accumulators are used as energy storage devices. As for a mechanical one, a flywheel is the most common
Clean power unplugged: the rise of mobile energy storage
22 October 2024. New York, USA. Returning for its 11th edition, Solar and Storage Finance USA Summit remains the annual event where decision-makers at the forefront of solar and storage projects across the United States and capital converge. Featuring the most active solar and storage transactors, join us for a packed two-days of deal-making
Energy Management Strategy of a PEM Fuel Cell Excavator with
This paper proposed a novel energy management strategy for a PEM fuel cell excavator with a supercapacitor/battery hybrid power source. The fuel cell is the main power supply
Machines | Free Full-Text | Trajectory Control Strategy and System Modeling of Load-Sensitive Hydraulic Excavator
Accurate control of excavator trajectory is the foundation for the intelligent and unmanned development of excavators. The excavator operation process requires multiple actuators to cooperate to complete the response action. However, the existing control methods to realize a single actuator of the excavator can no longer meet the practical demand. Based on
Development of new hybrid excavator
The EHCM is the combination of traditional ICE and auxiliary power sources to act as ESDs. In this configuration, the construction machine is mainly powered by the ICE, while storage devices are
Hydraulic Hybrid Excavator—Mathematical Model Validation and
The proposed ERS layout was designed to recover the potential energy of the boom, using a hydraulic accumulator as a storage device. The recovered energy is utilized through
Hydraulic Accumulators
Accumulator is installed in hydraulic systems with the idea of conserving or storing energy and smoothening pulsations as efficiently as possible. These are energy-storing devices. They are quite similar to rechargeable batteries that are used in electrical systems. These store and release energy in the form of pressurized fluids and are widely
Active power optimization control of speed closed-loop engine for energy saving in hydraulic excavator
The simulation and the experimental results show that the proposed control method has a much faster response for the energy-saving operating points, which reduces the energy consumption by 9.28% and 5.56% without adding any energy storage devices to the
Parameter Matching and Control of Series Hybrid Hydraulic
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[PDF] Development of hybrid excavator for regeneration ofboom potential energy
The aim of this paper is to propose a new energy saving hybrid excavator system using an electro-hydraulic actuator driven by an electric motor/generator for the regeneration of potential energy. A 5 ton class excavator is analyzed, developed with the boom for the evaluation of the designed. Expand. web.archive .
Energy efficiency analysis of integrated drive and energy recuperation system for hydraulic excavator
When the energy storage hydraulic cylinder [10,11] or energy storage chamber [12][13] [14] is used to recover the gravitational potential energy, the gravity of the working device can also be
Research on energy saving system of hydraulic excavator based
Research on energy saving system of hydraulic excavator based on three-chamber accumulator. November 2023. Journal of Energy Storage 72 (2):108571. DOI: 10.1016/j.est.2023.108571. Authors:
Energy Storage Systems
By combining an energy storage system and an integrated ECO Controller TM —Atlas Copco''s Energy Management System (EMS)— with low-emission modular assets, such
Developments in energy regeneration technologies for hydraulic
First, potential recoverable energy sources in excavator mechanisms are analyzed. Next, energy regeneration systems are classified according to energy storage
