8results about How to "Restore capacity" patented technology

The invention relates to the technical field of lead-acid battery maintenance, and particularly discloses a lead-acid battery repairing device for a communication base station, the lead-acid battery repairing device comprises a repairing table, a liquid pumping unit and a water injection repairing unit, and a liquid pumping pipe in the liquid pumping unit can synchronously deflect towards the overturning side of a lead-acid battery around a rotating shaft under the action of self gravity; therefore, the inlet of the suction channel of the liquid suction pipe is always located in the accumulation area of the electrolyte, so that effective suction of the electrolyte is realized, and incomplete liquid suction caused by retention of part of the electrolyte is avoided; by means of repeated water injection and low-current charging repair, the acid liquor density can be effectively reduced, the solubility product of sulfate can be effectively improved, low-current long-time charging is adopted to reduce ohmic polarization and delay early occurrence of water decomposition voltage, finally, the vulcanization phenomenon is gradually relieved or eliminated in the process of dissolving and converting into active substances, and through repeated charging and discharging, the acid liquor density can be effectively reduced. The vulcanization phenomenon is eliminated, so that the battery capacity is effectively recovered.

The present invention relates to a positive electrode electrolyte having a redox couple of Fe(CN) 6 3‑ / Fe(CN) 6 4‑ The invention discloses a method for recovering the positive electrode electrolyte of an alkaline iron-based liquid flow battery, which specifically comprises: taking the positive electrode electrolyte after the battery / stack is operated as the recovery object, adding a green reducing agent therein, and reducing the Fe(CN) accumulated in the positive electrode electrolyte to 6 3‑ Reduction, so that the Fe(CN) accumulated in the positive electrode electrolyte 6 3‑ Reduction to Fe(CN) 6 4‑ The present invention solves the problem of Fe(CN) accumulated in the positive electrode electrolyte during the operation of the battery / electrical stack by adding a green reducing agent to the positive electrode electrolyte after the battery / electrical stack is in operation. 6 3‑ The problem of capacity and efficiency attenuation caused by this can be solved, and the battery electrolyte can be reused.

The invention provides a natural gas well nitrogen foam sand washing plug removal method which comprises the following steps: 1) one day before construction, respectively pumping plug removal chemicals into a construction well oil pipe and an annulus; 2) nitrogen foam sand washing: preparing a foaming agent solution and a defoaming agent solution; a ground valve is adjusted, and the foam liquid enters the well from the oil pipe and returns out of the sleeve; after the nitrogen purity is 98%, nitrogen injection is started, the pressure change condition and the outlet liquid return condition are observed, the nitrogen discharge capacity and the pump truck discharge capacity are adjusted according to the field liquid return condition, well washing circulation is established, and sand washing is started after foam liquid is seen clean at an outlet; if pressure building is formed, the pump is stopped for observation, and foam sand washing is conducted again after the pressure is diffused; the sand washing operation is stopped after the well is washed until liquid returning at an outlet is clean and no sand is settled; and (3) reverse lifting induced spraying for reproduction. The method has the advantages of reducing operation procedures and time, reducing operation cost, reducing operation risks, effectively protecting a shaft and a stratum, efficiently washing sand and removing blockage, improving the seepage performance of the stratum, being environment-friendly and the like.

In the charging process, the all-solid-state battery undergoes CCCV charging at a set voltage VB, followed by storage. In the recovery process, the stored all-solid-state battery undergoes CCCV charging at a set voltage VR higher than the set voltage VB, and is maintained at the set voltage VR for a specified period. If CCCV charging is performed after storage using a set voltage VR that is higher than the original set voltage VB, then lithium ions exceeding the original set voltage VB will detach from the positive electrode of the all-solid-state battery, and its capacity will be restored.

The invention relates to the technical field of flow batteries, in particular to a system and method for recovering the capacity of a halogen-containing flow battery on line and application. The system comprises a flow battery working subsystem, a flow battery rebalancing subsystem and a halogen recovery subsystem, and electrolyte in the flow battery working subsystem contains halogen; the flow battery rebalancing subsystem is used for recovering the capacity of the flow battery working subsystem on line; and the halogen recovery subsystem is used for recovering halogen gas generated in the process that the redox flow battery rebalance subsystem recovers the capacity of the redox flow battery working subsystem on line. The capacity recovery process system and strategy provided by the invention are generally suitable for halogen-containing flow batteries, especially iron-chromium flow batteries, and are suitable for flow battery energy storage systems and projects of various scales, so that stable operation with high electrolyte utilization rate, high storage capacity, high performance, high cycle index and long service life is realized.

The invention relates to the technical field of iron-chromium flow batteries, and particularly discloses an immediate response iron-chromium flow battery quantitative rebalancing system and a rebalancing method. The system comprises an iron-chromium flow battery stack, a positive storage tank, a negative storage tank, a control system, a sieve-plate tower, an acid storage tank, a gas generator, a booster pump, an absorption tank, a cyclone separator, a filter, a rebalance electrolyte storage tank, a solid recovery tank and an air compressor. The sieve-plate tower is a place where a rebalance reaction occurs, the gas generator is used for generating a rebalance reactant, and the rebalance reactant is introduced into the sieve-plate tower through the booster pump; the rebalanced electrolyte is separated through a cyclone separator and a filter, the absorption tank can remove excessive gas in the reaction process, and the absorption liquid can be recycled by introducing air into an air compressor. According to the system, instant response after feeding can be realized, rebalance reaction can be started at any time, excessive ferric ions in the positive electrode electrolyte can be quantitatively rebalanced, and the technological process is simple and safe.

The invention discloses an integrated flow battery capacity recovery system and method, and belongs to the technical field of electrochemical energy storage. The integrated flow battery capacity recovery system comprises a main system stack and a rebalance stack, two ends of the main system stack are respectively connected with a positive storage tank and a negative storage tank, the positive storage tank is filled with a reducing agent, one end of the rebalance stack is connected with the positive storage tank, and the other end of the rebalance stack is connected with the negative storage tank. An adjusting device is arranged between the positive storage tank and the positive inlet of the rebalancing galvanic pile; the integrated flow battery capacity recovery system further comprises a charging and discharging device, and the charging and discharging device is connected with the main system electric pile and the rebalance electric pile. The integrated flow battery capacity recovery system and the integrated flow battery capacity recovery method effectively solve the problems that most reducing agents cannot directly react, and halogen simple substances are generated by adopting an electrolysis mode, and the liquid in the system is utilized to absorb halogen gas generated in the capacity recovery process, so that internal recycling is realized, and the energy consumption is reduced. The solution component stability is ensured.

The present invention discloses a battery capacity recovery method, device, equipment, storage medium and program product. The battery includes a silicon negative electrode lithium ion battery, and the negative electrode material of the silicon negative electrode lithium ion battery includes a silicon-based negative electrode material. The battery capacity recovery method includes: performing shallow charge and shallow discharge operations on the silicon negative electrode lithium ion battery for a preset number of cycles; wherein, during the shallow charge and shallow discharge operations, the lower limit of the discharge voltage of the silicon negative electrode lithium ion battery is greater than the delithiation potential of the silicon-based material in the silicon-based negative electrode material; monitoring the battery capacity of the silicon negative electrode lithium ion battery during the shallow charge and shallow discharge operations; when the battery capacity of the silicon negative electrode lithium ion battery during the shallow charge and shallow discharge operations is between 75% and 95% of the rated capacity of the battery, a full charge and discharge operation is performed on the silicon negative electrode lithium ion battery; during the full charge and discharge operations, the lower limit of the discharge voltage of the silicon negative electrode lithium ion battery is less than the delithiation potential of the silicon-based material in the silicon-based negative electrode material. The technical solution provided by the embodiment of the present invention effectively recovers the battery capacity.