摘要:
The herein described technology provides a device with at least two batteries having disparate charge characteristics connected in parallel and sharing a single charging node. The device further includes an adjustable resistance in a charge path between the single charging node and a first battery of the two disparate batteries, and charge control circuitry that dynamically determines a charge rate for the first battery based on a detected battery parameter and controls the adjustable resistance to charge the first battery at the determined charge rate.
摘要:
A method for assessing a state of charge/discharge (SOC/SOD) for a secondary electrochemical cell, said cell having a first operational mode during which said cell is charged from a power supply connected to terminals of said cell, a second operational mode during which said cell is discharged into a load and a rest mode, said method comprising steps of measuring entropy and enthalpy for said electrochemical cell, in the course of said first and second operational modes and during rest, and calculating a data representative of said state of charge/discharge (SOC/SOD).
摘要:
It provides a control system (12) for an EVCS (1) and control method. The control system (12) includes: an input module (120), being adapted for inputting a data representing a power reference for leveling power supplied from a utility grid (10); and a control module (121), being adapted for keeping charge of the battery (140) of the at least one EV (14) until the SOC of the battery (140) of the respective one of the at least one EV (14) increases to respective predetermined level and for changing SOC of its battery (140) afterwards in consideration of the power reference to level the power supplied from the utility grid (10) provided that a measurement of the SOC of its battery (140) is kept within respective predetermined range from the respective predetermined level. It takes the EV (14) charging with higher priority than the AS. Charger (11) will charge EV (14) to the value required by customer firstly, and use only certain part or entirety of EV battery capacity to provide AS. In this way, the EV (14) charging deviation will be limited into the certain value or entirety of EV battery capacity that does not disrupt EV (14) drive, even when the customer randomly leave before the time they committed.
摘要:
Systems and methods are disclosed for estimating a full-charge battery cell capacity without a coulomb counting device. First and second measured voltages of the battery cell are measured during a charging or discharging period. The first and second measured voltages of the battery cell are converted to percentages of remaining battery life. The amount of charge delivered to the battery cell and/or delivered from the battery cell during charging/discharging is calculated. The change in the percentage of remaining battery life is compared to the amount of charge delivered to the battery cell and/or delivered from the battery cell to calculate various battery cell evaluation calculations, including a full-charge battery cell capacity.
摘要:
Battery models using robust fail-safe iteration free approach for solving Differential Algebraic Equations, and associated systems and methods are disclosed. In one embodiment, a method includes generating a model of the rechargeable battery; determining one or more initial conditions for one or more algebraic variables of the model using a solver; holding differential variables of the model static by a switch function while determining the one or more initial conditions; applying the initial conditions to the model by the switch function; and determining one or more parameters for the rechargeable battery by solving the algebraic and differential equations.
摘要:
An elevator system includes at least one lithium-ion battery, a temperature sensor (56, 57) operatively coupled to the at least one lithium-ion battery (44), and a lithium-ion battery charging system (50) including a controller (30) having a central processing unit (CPU) (36) interconnected functionally via a system bus to the at least one lithium-ion battery (44) and the temperature sensor (56, 57). The controller (30) further includes at least one memory (38) device thereupon stored a set of instructions which, when executed by the CPU, causes the lithium-ion battery charging system (50) to determine an expected run mode for the elevator system, sense a temperature of the lithium-ion battery (44) through the temperature sensor (56, 57) establishing a sensed temperature, and establish a state of charge (SOC) for the lithium-ion battery based on the sensed temperature and expected run mode of the elevator system.
摘要:
The power system may include a main circuit arrangement having a power source, a load and a circuit breaker. The power system may additionally include an energy harvesting circuit arrangement connected to the main circuit arrangement. The energy harvesting circuit arrangement may include an operating switch and an energy harvester. The power system may also further include a trigger mechanism, which may be configured to, when detecting a current above a predetermined value in the main circuit arrangement, trigger the circuit breaker to switch from a closed mode to an open mode. The trigger mechanism may also be configured to trigger the operating switch to switch from an open mode to a closed mode for a predetermined duration, and back to the open mode after the predetermined duration, thereby storing electrical energy in the energy harvester.
摘要:
A combination comprises a handle module that is attachable to a detachable shaft module for collectively performing a surgical procedure, a first removable, rechargeable battery pack connectable to the handle module for providing electric power to the handle module during a surgical procedure and a charging station for charging the first battery pack when the battery pack is removed from the handle module and inserted into the charging station. The charging station comprises means for rapidly charging the first battery pack when a rapid charge user input for the battery pack is received by the charging station.