POWER STORAGE CONTROL APPARATUS, POWER STORAGE APPARATUS, REMAINING CHARGE TIME COMPUTING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM STORING REMAINING CHARGE TIME COMPUTING PROGRAM
A power storage control apparatus includes a processor that computes a remaining charge time of a power storage apparatus that supplies power to a load apparatus operating by power supply from an external power source in case of a power supply emergency of the external power source, and the processor computes the remaining charge time of the power storage apparatus based on linear approximation of correlation between an operating environment of the power storage apparatus and a charge time of the power storage apparatus including a charge stop time.
The backup power supply apparatus is an apparatus that supplies power to a power- supply target apparatus operating by power supply from an external power source when a power supply state of the external power source is emergency. The backup power supply apparatus includes: a power storage section; a series regulator that is located on a line connecting the power storage section and the power-supply target apparatus; and control circuitry that changes an output voltage of the series regulator in multiple stages in accordance with a change in the power supply state of the external power source and a change in a voltage of the power storage section.
A backup power supply device (1) to be connected to a conduction path (P) from an external power supply (3) to an external load (4) including a plurality of secondary batteries (B1 to B7) connected in parallel, a plurality of charging switches (SW1 to SW7) that can individually pass and cut off charging power from the conduction path (P) to the plurality of secondary batteries (B1 to B7), and a control device (10) for performing discharging control on the plurality of secondary batteries (B1 to B7) when the power supply voltage of the conduction path (P) drops below a predetermined power failure detection threshold value, when battery voltages of the plurality of secondary batteries (B1 to B7) drop below a predetermined charging start threshold value, the control device (10) performing charging control with a time difference (TD) set between charging start timings of the secondary batteries (B1 to B7).
A battery bank unit includes: a first battery bank and a second battery bank that are connected in parallel to each other; and a control apparatus that performs collective charge for collectively charging the first battery bank and the second battery bank, performs first bank charge for charging only the first battery bank after the collective charge, and performs second bank charge for charging only the second battery bank after the first bank charge. The control apparatus calculates remaining time to complete charge of the battery bank unit based on a temperature of the battery bank unit at a start of the collective charge.
A battery bank unit includes: a first battery bank and a second battery bank that are connected in parallel to each other; and a control apparatus that starts charging the second battery bank after the first battery bank is fully charged. The control apparatus calculates remaining time to complete charge of the battery bank unit based on a temperature of the battery bank unit at a start of the charge of the battery bank unit and a state of charge (SOC) of at least one of the first battery bank and/or the second battery bank at the start of the charge of the battery bank unit.
A charging method for supplementarily charging a plurality of secondary batteries (A to F) accommodated in a casing (11) on a regular basis, the method including the steps of: charging the plurality of secondary batteries (A to F) at the same time at the time of initial supplementary charging; acquiring each of peak temperatures during charging of the plurality of secondary batteries (A to F); listing combination patterns when the plurality of secondary batteries (A to F) are split into a plurality of charging groups; predicting, for each of the combination patterns, each of the peak temperatures in a case in which charging is performed for each of the charging groups, on the basis of the peak temperatures at the time of the initial supplementary charging; and split-charging the plurality of secondary batteries in the combination pattern that minimizes a variation in the predicted peak temperatures.
When DC power to be supplied from a main power supply device drops and a voltage to be input to a load falls below a predetermined threshold value, a microcomputer controls a switch unit so as to start an ON-operation for supplying the DC power from a sub power supply device to the load, and when the DC power to be supplied from the main power supply device recovers, the microcomputer controls the switch unit so as to start an OFF-operation for restricting the DC power to be supplied from the sub power supply device to the load, restrict supply of the DC power from the sub power supply device to the load so that a voltage to be input to the load does not fall below a predetermined threshold value until a predetermined time has elapsed since start of the OFF-operation, and set supply of the DC power from the sub power supply device to the load to zero after the predetermined time has elapsed.
H02J 1/00 - Circuit arrangements for dc mains or dc distribution networks
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
8.
BACKUP POWER SUPPLY DEVICE AND CHARGE/DISCHARGE CONTROL METHOD
A backup power supply device 1 is provided with: first to fifth battery packs BP1 to BP5 connected in parallel; a charger 10 that supplies a charge current to each battery pack; first to fifth charge switches SWc1 to SWc5 that individually connect and disconnect charge paths of the respective battery packs; and a controller 30 that controls each charge switch. The controller 30 divides the battery packs into a plurality of groups and performs pulse-width modulation (PWM) control of each charge switch at a duty ratio corresponding to the number of batteries in each group to charge the battery packs for each group. (Representative Drawing: FIG. 1)
The present invention provides a backup power supply device capable of suppressing current leakage from a storage battery during charging using a small number of components. This backup power supply device 100 comprises: a storage battery 20 charged with power from an external power supply 3; charge switches SW1, SW2 for charging the storage battery; discharge switches SW3, SW4 that are made from a field-effect transistor and that discharge the storage battery to a load device 2; a control unit 50 for controlling the charge switches and the discharge switches; and a discharge suppression means 41 connected in series to the discharge switches. The discharge suppression means 41 suppresses leakage of current from the storage battery 20 only when the control unit 50 charges the storage battery 20 and the battery voltage exceeds an input voltage and the difference voltage between the battery voltage and the input voltage is less than a prescribed value.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 7/10 - Regulation of the charging current or voltage using discharge tubes or semiconductor devices using semiconductor devices only
H02J 7/34 - Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
This power supply device 1 includes an external power supply 2, a load device 3, a power supply line 4, and a battery unit 10. The battery unit comprises: a first battery pack 11; a step-up/down circuit 12 for boosting the voltage of the external power supply up to the charge voltage of the battery pack; a first charge circuit 13; a first discharge circuit 14 for detecting a voltage drop of the external power supply and performing discharge from the battery pack to the load device; and a control circuit 15 for controlling charging and discharging. The discharge circuit has a first discharge switch 16 and a second discharge switch 17 which are connected in series between the battery pack and the power supply line. The first discharge switch is switched on/off by receiving a switching signal from the control circuit, and the second discharge switch is directly switched on/off not via the control circuit on the basis of the voltage of the external power supply.
Provided is a backup power supply that efficiently supplies power under the control of a microcomputer. The backup power supply 1 is charged by a rectifier 2 for generating power of a predetermined voltage, and supplies power to a load device 3 operating with power supplied from the rectifier 2 when the supplied power is insufficient. The backup power supply 1 includes a secondary battery 12 to be charged with power from the rectifier, a control unit 15 for controlling charging and discharging of the secondary battery, and an input/output voltage detection unit 18 for detecting the output voltage from the rectifier. The control unit stops charging of the secondary battery or reduces a charging current flow of the secondary battery when the output voltage drops to a first threshold voltage or less.
H02J 7/34 - Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
A backup power supply device having a short charging time is provided. The backup power supply device for supplying power when a main power supply is under a power failure includes first and second battery packs connected in parallel, a charging circuit for charging the first and second battery packs, first and second discharging switches for causing the first and second battery packs to discharge to the load device respectively, and a control unit. The control unit compares the battery voltages of the first and second battery packs with an output voltage from the main power supply. The control unit sets the first and second discharging switches to ON when the battery voltages are lower than the output voltage. When the battery voltage of the battery pack exceeds the output voltage of the main power supply due to charging, the control unit sets the first discharging switch and the second discharging switch to OFF. Thereafter, after the first and second battery packs are fully charged, the control unit switches the first and second discharging switches to ON when the battery voltage has dropped to a dischargeable upper limit voltage.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
An uninterruptible power supply device (UPS) for feeding a load device when power supply thereto is shut down. The UPS has battery packs, a charge and discharge circuit configured to charge and discharge the battery packs, a regulating discharge circuit including a resistance, and a control unit. When the battery pack is charged to a dischargeable upper limit voltage of the load device, the control device shifts the battery pack to a discharge inhibition condition. In the discharge inhibition condition, the battery pack is continuously charged to full capacity and prevented from being discharged to the load device. When the battery voltage is reduce to the upper limit voltage after being fully charged, the control unit allows the battery pack to discharge the load device.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
H02J 7/10 - Regulation of the charging current or voltage using discharge tubes or semiconductor devices using semiconductor devices only
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
A sliding gate device performs switching between communication and non-communication of through holes in a state where a contact pressure is applied between a fixed plate and a sliding plate, and control of switching between application of the contact pressure and release of the application with use of one sliding device, and also assuredly avoids release of application of the contact pressure while switching between communication and non-communication of the through holes. In order to achieve this, the sliding gate device includes a fixed plate fixed to a molten steel container, a sliding plate sliding relative to the fixed plate for opening/closing a nozzle hole, a sliding device for moving a case holding the sliding plate, and a contact pressure control mechanism for switching between a contact pressure applied state and a no-contact-pressure applied state for the fixed plate and the sliding plate. The contact pressure control mechanism has a support bar member supported to move relative to the fixed plate, a joining block tool for switching between a joined state where the support bar member and the case cooperate with each other by mounting the joining block tool therebetween, and a joining released state where the support bar member and the case do not cooperate with each other by dismounting the joining block tool, and a spring member for generating a force for applying a contact pressure according to a position of the support bar member.
A charge control method for an alkaline storage battery according to the present invention includes determining whether or not a temperature T of a battery is T
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
An immersion-nozzle replacement apparatus is provided for use with molten metal in foundry operations. The invention allows a quick and steady replacement of immersion nozzles without any leakage of molten metal even during founding operations. The immersion nozzle-replacement apparatus of the invention utilizes a guiding means supporting at least two immersion nozzles as well as keyboard rows which facilitate replacement of immersion nozzles during operations.
A charging circuit 1 is provided with: a first power source circuit 11 that supplies charging power to secondary batteries B1, B2; a switch SW that controls said supplying of power; and a control device 13 that carries out switching control for the switch SW. The control device 13 detects the voltage difference between the secondary batteries B1, B2 before charging begins, starts a timer and begins serially charging the secondary batteries B1, B2, and, on the condition that the pre-charge voltage difference was at least equal to a first threshold value, when the respective voltage values of the secondary batteries B1, B2 are both at least equal to a second threshold value before the timer ends, the remaining time on the timer is shortened at that point in time, and the serial charging of the secondary batteries B1, B2 is stopped at the earlier of the following two times: when the secondary batteries B1, B2 are both fully charged; or, when the timer ends.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/04 - Regulation of the charging current or voltage
18.
MANUFACTURING METHOD OF RECYCLED PLATE FOR SLIDING NOZZLE
Provided is a manufacturing method of a recycled plate for a sliding nozzle, which is capable of repairing damage of a plate used for a sliding nozzle to extend an endurance period and widens a range of the used plate as a target for recycling. The manufacturing method of the recycled plate performs, on a plate used for the sliding nozzle, recycling processing including impregnating a matrix of the plate that is formed by a refractory brick with liquid containing at least one of tar and pitch, heating the plate impregnated with the liquid to remove a volatile component, grinding a surface of the plate after having been impregnated with the liquid and heated, and bonding a plate material to one surface of the plate after having been grinded.
Provided is a manufacturing method of a recycled plate for a sliding nozzle, which is capable of repairing damage of a plate used for a sliding nozzle to extend an endurance period and widens a range of the used plate as a target for recycling. The manufacturing method of the recycled plate performs, on a plate used for the sliding nozzle, recycling processing including impregnating a matrix of the plate that is formed by a refractory brick with liquid containing at least one of tar and pitch, heating the plate impregnated with the liquid to remove a volatile component, and filling a recess having an opening width and a depth of equal to or smaller than 1 mm, which is present on a surface of the plate after having been impregnated with the liquid and heated, with a thermal expandable refractory material of which volume is increased by at least one of generation reaction and change in a crystal structure with heating when the plate attached to the sliding nozzle is used. 44
It is provided a high-temperature assembly that is favorable for increasing the sealing property at the boundary area between a first member and a second member that are used in a high-temperature environment. Further it is provided a method for producing the high-temperature assembly, and a heat-resistant sealing material. The heat- resistant sealing material, which is disposed at the boundary area between a first member and a second member, comprises ceramic particles made of a plurality of materials which form a ceramics the volume of which increases when the ceramics is synthesized.
A honeycomb structure that realizes high trapping efficiency for particulate matter (PM) contained in an exhaust, low initial pressure loss and inhibition of any increase of pressure loss by PM trapping. The honeycomb structure consists of a silicon carbide porous ceramic and has multiple unidirectionally extending cells aligned in parallel and partitioned by multiple cell walls. In the honeycomb structure, the average value of pore diameters of the cell walls as measured by mercury penetration method is in the range of 1 to 15 µm, and the standard deviation of pore diameter distribution having the pore diameters expressed by common logarithm is 0.20 or below. The ratio of pores of less than 2 µm pore diameter to all the pores is 5 vol.% or below.
F01N 3/022 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
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