Disclosed is a system and methods for measuring electrochemical state of rechargeable batteries such as state of charge (SoC) and state of health (SoH). In various aspects, the system may include an inductive coil attached to the battery and a battery current sensor. Alternating current with a fixed frequency is applied to the coil to generate magnetic fields, and the magnetic fields induce losses including Eddy current loss and a loss related to battery currents. The system compensates for the effect of the loss related to battery currents for battery electrochemical state estimation. In another aspect, the system uses both coil-based measurement and ampere hour counting (AHC) measurement for SoC measurement. The system conducts coil-based SoC measurement only occasionally to reset the accumulated error of AHC-based SoC measurement. In yet another aspect, the system combines coil-based measurement with other measurements.

The present disclosure is directed systems and methods for monitoring battery conditions. In one illustrative embodiment, a system in accordance with the present disclosure may include a number of battery sensor units, each battery sensor unit being in operative communication with sensors on each individual cell on a battery, such as a battery used for supplying power to an industrial vehicle. The battery sensor units may track the supply voltage, temperature, and/or electrolyte level for each cell on a battery. One or more site gateways disposed at the location where the batteries are in use are in operative communication with the battery sensor units and through a network connection provide data collected by the battery sensor units to a database that can be accessed by remote users using an internet accessible portal or mobile app. The system may provide real time alerts for out of bound conditions.

A method for producing a battery, the method includes a liquid injecting process. In this liquid injecting process includes: a first liquid-injecting step of injecting an electrolytic solution of a first injection amount (V1) determined so that a liquid-level height of the electrolytic solution falls within an intermediate liquid-level range in which the liquid-level height is equal to or higher than a first reference height but is lower than a second reference height while an air pressure in a metal battery case is regulated to a first air pressure; and a second liquid-injecting step of injecting the electrolytic solution in a remaining second injection amount up to a specified amount while increasing the air pressure in the metal battery case to a second air pressure higher than the first air pressure and maintaining the liquid-level height of the electrolytic solution within the intermediate liquid-level range.

A system for extending a range of an electric vehicle includes a graphene-based metal-air battery system (GMABS), an electrolyte management system (EMS), a flow management system (FMS), one or more auxiliary power sources, and a real-time monitoring and feedback system (RMS). The GMABS includes multiple cells electrically connected to each other and filled with an electrolyte for initiating a reaction to generate power. The EMS regulates a temperature of the electrolyte flowing through the cells. The FMS regulates a circulation of the electrolyte in the GMABS. At least one auxiliary power source is connected to the GMABS to receive and deliver the power to components of the electric vehicle. The RMS continuously computes and monitors a state of charge of each auxiliary power source in real time to facilitate a continuous power delivery to the electric vehicle, thereby extending the range of the electric vehicle.

An improved, low porosity, solid electrolyte membrane and a method of manufacturing the solid electrolyte membrane are provided. The low porosity, solid electrolyte membrane significantly improves both mechanical strength and porosity of the membrane, inhibits the growth of lithium dendrites (Li dendrites), and thereby maintains and maximizes electrochemical stability of an all-solid-state battery. This is accomplished by wet-coating a sulfide or oxide solid electrolyte particle with a thermoplastic resin, or a mixture of the thermoplastic resin and a thermosetting resin, using a solvent to prepare a composite and hot-pressing the composite at a relatively low temperature and at a low pressure.

A producing method and an examining method for a rectangular battery in which an impregnated state of an electrolytic solution impregnated in an electrode body is appropriately examined are provided. A producing method for the rectangular battery includes a step of impregnation examining to determining an impregnated state of the electrolytic solution in the electrode body by holding and pressing a first side wall portion and a second side wall portion of the rectangular battery to bring their inside surfaces into contact with an electrode body, bringing a transmitting probe and a receiving probe into close contact with the first side wall portion and the second side wall portion respectively, and in a state that an absorption member is placed to absorb diffused ultrasonic wave or going-around ultrasonic wave, transmitting the post-penetrated ultrasonic wave to pass through the electrode body and others, and receiving it by the receiving probe.

Methods, systems, and apparatuses for multichannel, matrix-based testing of electrochemical materials are described herein. The system provides an electrochemical testing apparatus that consists of a bottom block having a first array of N×M receiving wells, and a top block with a second array of N×M chambers, with each of the N×M chambers having an electrical connector. The method involves inserting, into a number of the first array of N×M receiving wells, one or more electrochemical compositions to be tested. The method then involves closing the top block onto the bottom block. When the top and bottom blocks are closed, the N×M receiving wells and N×M chambers are aligned, thereby forming N×M testing cells. Finally, the method involves measuring one or more properties of the electrochemical composition inserted in the plurality of the N×M receiving wells.

A rechargeable battery cell includes a cathode, an anode, an electrolyte, and a sensor that is arranged in the rechargeable battery cell. The sensor has at least two sensor electrodes and is accommodated in the rechargeable battery cell without a sheathing at least in sections. Moreover, the at least two sensor electrodes are operated in an electrical potential range that protects the sensor and/or the sensor electrodes against corrosion by the electrolyte. A method for producing and operating a rechargeable battery cell of this kind is also provided.

A battery system, a method of detecting leaks inside a battery system, and a vehicle, the battery system including a housing including a housing frame and a base frame, the housing frame and the base frame enclosing a housing space; a battery module including a plurality of battery cells electrically connected to each other via a bus bar, the battery module being in the housing space; a tray including a tray frame and a tray base; and a battery management system including a liquid detector, wherein the liquid detector is configured to detect a liquid inside the tray, and the liquid detector includes a high-voltage conductor, a first end of the high-voltage conductor being connected to the bus bar and a second end of the high-voltage conductor being between the base frame and the tray base.

Improved battery systems, apparatuses, and methods for use in electric air, land, and marine vehicles and mobile, portable, and stationary electrical appliances and devices are provided. The systems employ acoustic and current manipulation of anode interface deposits including dendrites on or proximate lithium and other anodes. This invention may employ multistatic ultrasonic phased arrays and current modulation to 1) minimize deposit, e.g., dendrite, initiation and formation by acoustic stirring, 2) acoustically image dendritic growths to monitor changes in dendrite growths, 3) cue dendrite cleaning and battery shutdown to avoid short circuit, 4) induce failure in dendritic structure and shearing of at least a portion of the dendrite from the anode, and 5) transport sheared dendrites and other dead metal to a graveyard.