42results about How to "Efficient charge and discharge" patented technology

A method and an apparatus are provided for controlling an output voltage of a direct current (DC) converter for a vehicle including a driving motor. The apparatus of controlling an output voltage of a DC converter for a vehicle including a driving motor includes a data detector that is configured to detect data for adjusting the output voltage of the DC converter and a controller that is configured to adjust the output voltage of the DC converter based on the detected data.

The invention relates to a simple preparation method of a cobalt nickel sulfide nanosheet serving as a supercapacitor electrode material by adoption of a simple two-step solvothermal technique. The simple preparation method of the cobalt nickel sulfide nanosheet serving as the supercapacitor electrode material includes: adopting transition metal salt cobalt nitrate, nickel nitrate and anhydrous sodium acetate as reaction raw materials, and respectively adopting polyethylene glycol, ethylene glycol and ethyl alcohol as solvents and taking TAA (thioacetamide) as a sulfur source to prepare the cobalt nickel sulfide nanosheet according to a two-step solvothermal method. The cobalt nickel sulfide nanosheet prepared according to the method has advantages of high repeatability, simplicity in synthesis process, easiness in control and high yield. The laminar structure is beneficial to surface quick action of electrolyte ions and electrodes, efficient charging and discharging are benefited, and a high specific capacity can be provided.

The invention discloses an energy-saving control method for plug-in hybrid electric vehicles based on road traffic information. The energy-saving control method comprises the following steps: obtaining the real-time road grade, the traffic information of front vehicles, and the information of a next charging station from a global positioning system and an intelligent traffic system; establishing a three-dimensional mathematical model of a plug-in hybrid electric vehicle for predicting the vehicle state in the future; defining the power consumption of the vehicle and the optimum control problem of energy management at the power sustaining stage, and providing a functional equation for solving optimum control amount; performing real-time feedback optimum control, solving the optimum control amount so as to realize the optimum allocation for charging and discharging of a storage battery, adjusting and optimizing the energy flow of the plug-in hybrid electric vehicle on line according to the traveling conditions of the vehicle, obtaining the optimum performance of the system of the plug-in hybrid electric vehicle, and using a planetary gear mechanism as an continuously-variable electronic transmission, so that an engine works at an efficient region; predicting the charging state of the target storage battery according to the road traffic information, and adjusting the energy flow of the plug-in hybrid electric vehicle on line so as to achieve the purposes of saving energy and reducing exhaust.

A heat exchanger with integrated thermal storage, for example, having a new tertiary side utilising phase change material in between and in thermal contact with the primary and secondary circuits, e.g. of a plate heat exchanger. The tertiary side helps reduce e.g. leak flows in district heating applications, or reduce energy losses in periods of low flow through the heat exchanger. By including thermal energy storage in a heat exchanger or reactor, response times of the systems are reduced as well as internal energy losses, and external energy storage units are reduced in number or are potentially rendered obsolete.

The invention relates to a preparation technique of battery electrode flakes of a lithium polymer battery, solving the shortcoming that the current collector and electrode membrane are laminated and hot-pressed after being cut, which is not conductive to the application of continuous hot pressing afterwards in the prior art. When in production, PET is adopted as a carrier, and the steps are: a. acurrent collector is washed with acid base or alkali acid, and fully rinsed with clean water; b. the washed current collector is coated with a layer of conductive adhesive and fully dried; c. the current collector and the PET are respectively put on a unreeling body and simultaneously unreeled in parallel, leading the current collector to be stuck to the PET in parallel; d. the current collector is coated with the electrode coating and dried; e. the current collector and the PET are simultaneously separated and separately reeled. The electrode coating is adopted to directly coat on a copper-aluminum foil or copper-aluminum net, thereby realizing continuous thermal pressing process of the current collector and the electrode coating, reducing production procedure, improving production efficiency and reducing production cost.

An aluminum secondary battery includes a positive electrode 11, a negative electrode 12, and an electrolyte, wherein the positive electrode 11 includes an anion receptor such as polyaniline, the negative electrode 12 includes aluminum or an aluminum alloy, the electrolyte includes an aluminum salt, a sulfone, and a solvent with a dielectric constant of 20 or less, wherein the aluminum salt is typically AlCl3 or the like, the sulfone is typically ethyl n-propyl sulfone or the like, and the solvent with a dielectric constant of 20 or less is typically toluene or the like.

The invention discloses a highly active defective metal oxide / porous nano carbon composite material, which comprises nitrogen-sulfur double-doped porous nano carbon and an oxygen-deficient metal oxide supported on the porous nano carbon. The defective metal oxide / porous carbon nanocomposite material utilizes ion regulation to directly composite the defective metal oxide onto the nitrogen-sulfur double-doped porous carbonaceous nanomaterials in one step, so that it can be applied to high energy density lithium In sulfur batteries, the problem of low utilization rate of active materials in lithium-sulfur batteries is overcome, and the conductivity of lithium ions in solid phase and the heterogeneous catalytic conversion ability of polysulfides are improved, so that when it is applied to electrodes, The efficient utilization and high cycle life of the sulfur cathode show more excellent electrochemical performance, which can achieve the goal of fast charge and discharge. The invention also discloses the preparation method of the above-mentioned defective metal oxide / porous nano carbon composite material and its application in the energy storage device.

The present invention realizes a construction machine equipped with an engine and capable of using an external power source. Construction machinery is equipped with an electric storage device (14) that is charged by an external power source, and is assisted by the electric storage device when the output of the engine (1) is insufficient, and the charge amount of the electric storage device is used in a planned manner based on the working time, The discharge amount is controlled based on the load state, thereby efficiently using the power storage device. In particular, it has: an engine (1), an auxiliary machine load (16) connected to the engine, an auxiliary motor (2) driven by the engine, and a power converter (9 , 10, 13); the power storage device (14) connected to the DC side of the power converter, the power storage device is charged from an external power source via a charging device (15).