外文文献原文和翻译蓄电池.docx

1、外文文献原文和翻译蓄电池 Description Technical Field The present invention relates to a power source system having a power accumulator for supplying when a commercial power source oe other interruptible power source breaks down,a power supply control method Of the power source system,a power supply control prog

2、ram Of the power source system,a computer readable recoding medium having power supply control program Of the power source system recoded thereon.Background Art In recent years ,a power accumulator has drawn wide attention and been used as backup power source.A backup power source is changed when a

3、commercial power source operated normally,and continues supply power to equipment in place of the commercial power source when commercial power source has a defect.Examples of such a backup power source include a UPS（Uninterruptive Power Source）.By instantaneously switching the commercial power sour

4、ce to an output of the backup power source in case of power outage,a computer or a storage unit in use,as well as network equipment such as a server are prevented from being stopped. Such a backup power source combined with the power accumulator is controlled to maintain residual capacity representi

5、ng the state of charge at a high level.In this system,generally because surplus power is charged in power accumulator efficiently by a power generation action of an electric motor,charge|discharge control is performed so that the SOC does not exceed 100%.In order to supply power to the electric moto

6、r when necessary,charge|discharge control is performed so that the SOC does not decrease to 0(zero).Specially,normally in power accumulator,the control is performed so that the SOC fluctuates within a range of 20% to 80%. With regard to elevators,on the other hand,a hybrid elevator that has a cage a

7、nd a counterweight to inhibit unnecessary power consumption during the operation of hybrid elevator has been developed.Such a hybrid elevator utilizes the power of its battery at the time of power outage,so that in case of power outage or other abnormal state during of operation of the hybrid elevat

8、or,the power for driving the elevator is supplied from a power source to carry the elevator to the nearest floor or any floor and safely retrieve the passage from the stage.The following method is proposed as a method for controlling an automatic landing device of the elevator.Patent Document 1,for

9、example,discloses a method for detecting the output voltage ,output current,and a temperature of a battery power source to perform a rescue operation in response to the power supply capacity of the battery power source. Here,as a method for calculating the power supply capacity,a method for calculat

10、ing the power supply capacity from the open voltage,internal resistance,and minimum voltage(operable voltage) of the battery power source is generally known ,as shown is equation (1) below.The minimum voltage used for calculating the power supply capacity is set with a certain degree of margin,in vi

11、ew of the life of the battery power source . Power Supply Capacity= minimum voltage*(open voltage - minimum voltage)internal resistance.(1) Moreover,the hybrid elevator has to always secure energy amount for carrying the elevator to a necessary floor in case of emergency during the normal operation

12、of commercial power source ,and thereon a large power accumulator with a large capacity required. In the method disclosed in Patent Document 1,the output voltage and the voltage set value are compared with each other by a discharge time and discharge state of the battery is detected by the magnitude

13、 relation there between to control the operation of the elevator.Therefore,when the power supply capacity of the battery power source is low,the power supply capacity will be lost,thereby stopping the power supply from the battery.In this case,because charging of the battery power source is started

14、after the interruptible power source returns ,and the rescue operation is conducted upon completion of the charging,the elevator cannot be carried to the nearest floor to perform rescue operation in the case of an abnormal situation of the interruptible power source.As a result,the passengers remain

15、 trapped in the elevator. Moreover,when the interruptible power source is stopped due to disaster like as in the hybrid elevator,it is necessary for the backup power source to ensure the minimum power supply capacity for enabling minimum operation. Consequently,because a margin becomes necessary in

16、the capacity of the backup power source,a large power accumulator is necessary. In addition,the minimum voltage used for calculating the power supply capacity has a margin,in view of the life property.Therefore, the value of the actual power supply capacity is smaller than the that of the primary po

17、wer supply capacity of the power accumulator.Disclosure of invention An object of the present invention is to provide a power source system capable of realizing at least the minimum backup function ,increasing the life duration of a power accumulator,and reducing the size of the power accumulator by

18、 temporarily improving the power supply capacity of a power accumulator when an interruptible power source is stopped by disaster or the like.The present invention also provide a power supply control method of the power source system ,a power supply control program Of the power source system and a c

19、omputer readable recoding medium having power supply control program Of the power source system recoded thereon. A power source system according to an aspect of the present invention has:a power unit for supplying power to a load service;a power accumulator for supplying the power to a load service

20、in place of the power unit when the power unit is stopped,and a controller for controlling power supply from the power accumulator to a load service;wherein the controller sets an operable voltage,which is determined as an output voltage foe ending discharge of the power accumulator,at a first volta

21、ge when the power unit is operated,and sets the operable voltage at a second voltage lower than the first voltage when the power unit is stopped ,thereby increasing the power supplied to the load device by the power accumulator. According to the power source system described above,the power supply c

22、apacity of the power accumulator can be improved by reducing the operable voltage of the power accumulator when the power unit is stopped,the operable voltage being set during the normal operation of the power unit.Furthermore,because the operable voltage of the power accumulator is reduced after th

23、e power unit is stopped,and the number of the times that the power accumulator is over-discharged duo to the decrease in the operable voltage can be prevented from increasing.,the life duration of the power accumulator can be increased.In addition,the size of the power accumulator can be reduced bec

24、ause it is not necessary to increase the capacity of the power accumulator beforehand in the light of an increase in power supply when the power unit is stopped.Brief description pf the drawings:Fig.1 Fig.1 is a block diagram showing a configuration of a power source system according to Embodiment 1

25、 of the present invention.Best Mode For Carrying the invention.(Embodiment 1) Fig.1 is a block diagram showing a configuration of a power source system according to Embodiment 1 of the present invention.As shown in Fig.1,a power source system 10 according to the present invention has an interruptibl

26、e power source 100,a load device 200,a power accumulator 300,a charge|discharge control device 400,a power supply control device 500,and an electric control unit 600. The interruptible power source 100 is ,for example ,a commercial power source,such as a generator having an engine as a source of pow

27、er. The power accumulator 300 stores surplus power from the interruptible power source 100 and regenerative electric power generated by the load device 200,and supplies the stored electric power to the load device 200 according to need.The power accumulator 300 is configured by connecting N number o

28、f electric power accumulation element blocks B1,B2,.BN in series.Each of the electric power accumulation element blocks B1,B2,.BN is configured electrically connecting a plurality of electrical storage elements 301 series.An alkaline storage battery such as a nickel hydride battery ,an organic batte

29、ry such as a lithium-ion battery ,and an electrical double layer capacitor can be used as each of the electrical storage elements 301 .Note that the number N of electric power accumulation element blocks and the the number of the electrical storage elements 301 are not particularly limited.The power

30、 accumulator 300 has a predetermined range of operating voltage determined beforehand ,so that the battery characteristics,life duration and reliability of the power accumulator 300 are not degraded.Operable voltage,which is the minimum voltage (final voltage) of this operating voltage range is the

31、voltage for ending discharge of the power accumulator 300 .During the normal operation ,when the output voltage of the power accumulator 300 falls below the operable voltage,discharge of the power accumulator 300;namely,power supply from he power accumulator 300,is stopped.However,power supply from

32、the power accumulator 300 is possible until the output voltage of the power accumulator 300 falls below the operable voltage;namely,by reducing the operable voltage.In this case,the power accumulator 300 is over-discharged temporarily,but the the battery characteristics and the like of the power acc

33、umulator 300 are not impinged so long as the discharge of the power accumulator 300 is executed without degrading the the battery characteristics,life duration and reliability of the power accumulator 300. The charge|discharge control device 400 controls charge|discharge of the power accumulator 300.The charge|discharg