572results about "Charging management" patented technology

PCT No. PCT/NZ97/00053 Sec. 371 Date Nov. 3, 1998 Sec. 102(e) Date Nov. 3, 1998 PCT Filed May 2, 1997 PCT Pub. No. WO97/42695 PCT Pub. Date Nov. 13, 1997Loosely coupled inductive power for charging batteries is rectified from a first power pickup winding and the resulting current source is connected to a battery unit. Each current source is controlled by shorting a second resonant winding. Battery banks may be charged using multiple isolated position-tolerant pickups independently controlled according to the condition of the connected battery unit and by overall commands communicated over an isolated link. The battery unit may be a single cell. In a self-stabilizing bank or monoblock a primary inductive conductor is energized using all the cells, individual cells are separately monitored by control means and any below-average cell can be individually charged from the inductive conductor, thus correcting between-cell variations. The charge in all cells within a bank can be held within 30% to 70% of full charge and prevented from drifting towards full or empty during repetitive charge and discharge times.

Systems and methods for health management of rechargeable batteries are disclosed. In one embodiment, a rechargeable battery system includes a rechargeable battery, and a battery health management unit operatively coupled to the rechargeable battery and including a state of health module configured to estimate a battery health by receiving battery-related data and predicting one or more failure modes. The state of health module may further include a prognostic failure mode component configured to combine at least one flight data variable with at least one model-based prognostic. In alternate embodiments, the battery health management unit may further include a state of life module and a state of charge module.

The invention relates to a device for managing battery packs by measuring and monitoring the operating capacity of individual battery modules in a battery pack. A programmable logic controller directs the selective closing of relays to allow individual battery modules to be load-tested using a variable discharge load unit, without compromising useful battery pack capacity. A battery module whose useful capacity falls below a predefined threshold may be connected to a battery charger for replenishment and then electrically realigned with the remaining modules in the pack for continued operation. Alternatively, an alarm may be triggered which alerts the user that the module is due for replacement. This sequence of events is performed on all cells in the pack at a predetermined interval.

Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the battery cells in the battery module on the low potential side. Terminals related to input/output of a signal are electrically connected without isolating among the plural low order control devices.

The high reliable smart parallel energy storage tank charge/discharge system is composed of one or multiple identical Smart Energy Storage Unit. And each Smart Energy Storage Unit comprises an Energy Storage Management Module, an Energy Storage Device, a Sensor Switch Device and a Smart Identifier and Transmission Interface. All the historical records and real time information for charge/discharge condition of Smart Energy Storage Unit can upload to external connected equipment via the External Equipment Interface. To operate in coordination with an External Energy (Electric Power) Source, under any one Smart Energy Storage Unit served as the controller, this management system can carry out an effective charge/discharge management. When the Smart Energy Storage Unit which is in charged of the charge/discharge managing failed and cannot operate, the other normally operated Smart Energy Storage Units can automatically detect the situation and replace the role of charge/discharge management immediately so as to accomplish a high reliable charge/discharge management system.

A serial communication method and system is provided for use with a battery management system. The system includes a port capable of sending and receiving pulses over a single conductor, serial interface logic compatible with a serial protocol and capable of generating and detecting signals on the port and communicating the signals with an internal bus in the battery management system wherein each signal in the serial protocol is defined by a specific number of pulses. In the serial protocol, a zero signal corresponds to a sequence of two pulses, a one signal corresponds to a sequence of three pulses, an acknowledge signal corresponds to a sequence of four pulses, and a start signal corresponds to a sequence of five pulses.

A multi-series battery control system comprises battery cell groups each having a plurality of serially connected battery cells, a plurality of integrated circuits each disposed in correspondence to one of the battery cell groups and a battery control device that exchanges signals with the individual integrated circuits. Each integrated circuit includes an address setting means that receives a message unique to the integrated circuit, different from messages sent to other integrated circuits, from the battery control device, writes over an initialized address of the integrated circuit with the message and alters the message to a message with which an initialized address of another integrated circuit cannot be overwritten in a step assigned with an ordinal number matching the position of the integrated circuit with regard to the connection order.

A system and method is provided for charging an auxiliary battery in a plug-in electric vehicle with an onboard charging system. The auxiliary battery has a predetermined operating range of charge levels. The auxiliary battery is charged to an upper charge level using an external power source thereby reducing energy used from the onboard charging system to charge the auxiliary battery during a drive mode of the vehicle. The upper charge level may be substantially similar to an upper level of the predetermined operating range of charge levels or greater than the predetermined operating range of charge levels. The auxiliary battery may be allowed to discharge to a lower charge level, which may be substantially similar to a lower level of the predetermined operating range of charge levels or less than the predetermined operating range of charge levels.

The present invention provides a distributed secondary battery type power storage system capable of maintaining the soundness of the secondary battery and of efficient electric power charging and discharging operations. The secondary battery power storage system comprises a secondary battery connected to a load, a charge/discharge unit connectable to a power system and connected to the secondary battery, and a plurality of loads connected to the charge/discharge unit. A power receiving object is selected and a capacity is determined on the basis of information about the operating condition of the plurality of loads, and the surplus electric power remaining in the secondary battery after feeding electric power from the secondary battery to the load is fed to the selected power receiving object through the charge/discharge unit. The secondary battery power storage system is capable of maintaining the soundness of the secondary battery and of efficient charging and discharging operation.

Provided is a power management system capable of controlling charge and discharge of storage batteries according to power requirement of load even when handling electric power of large scale. A system controller receives load-related information data including the power requirement of load and storage battery-related information data including a state of a storage battery assembly including multiple storage batteries and creates an overall charge-discharge control instruction for the entire power management system based on the load-related information data and the storage battery-related information data. A hierarchical charge-discharge control apparatus receives the overall charge-discharge control instruction from the system controller and performs charge-discharge control of the multiple storage batteries, classified into hierarchical levels, on a hierarchical level basis.

A battery module system includes a battery module and a control member. The battery module comprises battery units are connected in series. Each of the battery units comprises a unit cell having a voltage variation rate A (mV/% SOC) at a full charge voltage V_H1 (V) is larger than 20 (mV/% SOC), which is a value obtained when the unit cell is charged at a current of 1 C at 25° C. The control member controls current to a current I₁ until a maximum value V_max (V) among the voltage of each unit cell reaches the full charge voltage V_H1 (V) and then controls a voltage of the battery module to a voltage V2 (V) given by the following equation (1):

V2=V_H2×n  (1)

In accordance with the present invention there is provided an engine (100), the engine (100) having a first mode and a second mode, the engine (100) comprising: a first battery (101); a second battery (102); a first charge level monitoring device (106) attached to the first battery (101); and a control unit (105). The control unit (105) is arranged to: measure the charge level of the first battery (101) using the first charge level monitoring device (106) when the engine (100) is in the second mode; and cause the second battery (102) to charge the first battery (101) if the charge level of the first battery (101) is beneath a first threshold value.

A battery control module for a rechargeable battery includes a voltage measuring module that measures a voltage of the rechargeable battery and that estimates a first derivative of the voltage with respect to time (dV/dt) and a second derivative of the voltage with respect to time (d²V/dt²). A charge control module estimates a maximum charging current based on dV/dt. A current control module limits a charging current of the rechargeable battery to the maximum charging current and turns off the charging current when d²V/dt² is greater than dV/dt.

A battery system including: a battery, which includes at least one battery cell; a division circuit configured to receive a first voltage of the battery, generate a second voltage from the first voltage, and output the second voltage; an isolation circuit coupled between the battery and the division circuit, the isolation circuit being configured to electrically isolate the battery from the division circuit according to a control signal; and a battery management system coupled to the division circuit. The battery management system includes an isolation circuit control unit configured to generate the control signal; and a measuring unit configured to measure the second voltage.

Systems and methods are provided for managing the batteries and the power source as a single combined output to power the load, allowing the system to use power source with reduced maximum power output, reducing system cost and complexity. Furthermore, the switch matrix controller efficiently and dynamically manages the internal power transfer to minimize the charging/discharging cycle of the batteries while ensuring that the power source and the batteries meet changing load power demand. Finally, maximizing charging time and having independent control of each battery increase power efficiency, prolong the operational life of the battery, and increase overall system life.

The invention relates to a mobile charging pile and its usage method. The mobile charging pile includes: a management system, a charging system, an energy system, a driving system, a communication system and an auxiliary system. Among them, the management system includes the battery management system and the energy management system, which is responsible for integrating and controlling other systems; the energy system includes batteries and chargers, which are used to store and provide electric energy for other systems; the charging system includes DC charging piles, inverters, AC Charging piles and 220V emergency sockets are responsible for converting electric energy and charging electric vehicles; the drive system includes drive circuit boards, motors, steering rods, and wheels to control the movement of charging piles; the communication system includes mobile phone clients and backgrounds, responsible for contacting car owners , mobile charging pile and its person in charge; auxiliary systems include DC converters, switches, shutters, warning lights, shelves and housings, which are used to assist the operation of other systems. The invention has the advantages of convenient reservation, flexible maneuvering and unlimited charging positions.