Cash automatic transaction device and cash automatic transaction device control program

Abstract

To provide a cash automatic transaction device that performs backup processing without producing deviation in the degree of deterioration of a plurality of secondary batteries.SOLUTION: Provided is a cash automatic transaction device that transacts cash, including: a first backup power source unit and a second backup power source unit that can supply power to the cash automatic transaction device instead of a commercial power supply; a state detection unit that detects states of the first backup power source unit and the second backup power source part; a deterioration determination unit that determines degrees of deterioration of the first backup power source unit and the second backup power source unit based on a detection result of the state detection part; and a backup power supply control unit that based on a determination result of the deterioration determination unit, switches a use mode of the first backup power source unit and the second backup power source unit during power supply by the first backup power source unit and the second backup power source unit when the commercial power supply is interrupted.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an automated teller machine. [Background technology]

[0002] 2. Description of the Related Art In recent years, automated transaction machines that are operated as a backup by a secondary battery built into the machine in the event of a power outage have become widespread.

[0003] For example, Patent Document 1 discloses an automated teller machine that, in the event of a power outage, performs backup processing by supplying power from a backup power source consisting of two batteries 1 and 2 provided in the machine to a mechanism part that is in the middle of processing or waiting for the processing result based on the transaction details of the automated teller machine and the status of each mechanism part.

[0004] Furthermore, for example, Patent Document 1 describes that even if both batteries are insufficient in capacity, by connecting both batteries together, it is possible to supply the necessary capacity to each processing unit. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 3561684 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the automated teller machine described in Patent Document 1 supplies power from battery 1 of the backup power supply during backup, and switches to supply power from battery 2 when the capacity of battery 1 is low. As a result, the backup frequency and the number of charge / discharge cycles of battery 1 become higher than those of battery 2, and battery 1 deteriorates faster than battery 2.

[0007] Furthermore, in the automated teller machine described in Patent Document 1, if both batteries with a higher degree of degradation are connected together, the influence of battery 1 with a higher degree of degradation may result in damage to the batteries or greater degradation of the batteries.

[0008] Specifically, in the automated teller machine described in Patent Document 1, when battery 1 and battery 2 are connected in series, battery 1, which has a high level of degradation and has completed discharging during backup, may be reverse-charged by battery 2, which has a low level of degradation, and battery 1 may be damaged.

[0009] Furthermore, in the automated teller machine described in Patent Document 1, when Battery 1 and Battery 2 are connected in parallel, an imbalance in the discharge currents of Battery 1 and Battery 2 may occur, which may cause uneven charging and discharging of Battery 1 and Battery 2, and may also cause a circulating current between the batteries, resulting in increased battery degradation.

[0010] The present invention has been made in view of the above-mentioned points, and has as its object to provide an automated teller machine that performs backup processing without causing uneven deterioration of a plurality of secondary batteries. [Means for solving the problem]

[0011] An automated teller machine according to the present invention is an automated teller machine for dealing in cash, comprising: a first backup power supply unit and a second backup power supply unit that can supply power to the automated teller machine in place of a supply from a commercial power source; a state detection unit that detects states of the first backup power supply unit and the second backup power supply unit; a deterioration determination unit that determines a degree of deterioration of the first backup power supply unit and the second backup power supply unit based on a detection result of the state detection unit; and a backup power supply control unit that switches a usage mode of the first backup power supply unit and the second backup power supply unit when power is supplied by the first backup power supply unit and the second backup power supply unit when the commercial power source is interrupted based on a determination result of the deterioration determination unit. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating a configuration of an automated teller machine according to a first embodiment. [Figure 2] 1 is a block diagram of a power supply device in an automated teller machine according to a first embodiment. [Figure 3] FIG. 4 is a diagram showing a processing flow of the power supply device in the automated teller machine according to the first embodiment at the time of a power outage. [Figure 4] FIG. 4 is a diagram showing a processing flow of a control unit in the automated teller machine according to the first embodiment at the time of a power outage. [Figure 5] FIG. 4 is a diagram showing a backup processing flow in the automated teller machine according to the first embodiment at the time of a power outage. [Figure 6] FIG. 4 is a diagram showing a backup processing flow in the automated teller machine according to the first embodiment at the time of a power outage. [Figure 7] FIG. 4 is a diagram showing a backup processing flow in the automated teller machine according to the first embodiment at the time of a power outage. [Figure 8] FIG. 4 is a diagram showing a backup processing flow in the automated teller machine according to the first embodiment at the time of a power outage. [Figure 9] FIG. 10 is a diagram showing the accumulated discharged power amount of the secondary battery in the automated teller machine according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same components are designated by the same reference numerals, and the description of the same components will be omitted. [Example]

[0014] FIG. 1 is a diagram showing a configuration of an automated teller machine 1 according to a first embodiment.

[0015] The automated teller machine includes a power supply device 10, a secondary battery unit 20 connected to the power supply device 10 and equipped with a secondary battery, a mechanical unit 30, a control unit 50, and a display unit 40.

[0016] The power supply device 10 receives power from, for example, a commercial power supply 2 of AC 100V to 240V external to the device, converts the power, and supplies it to the mechanical unit 30, the control unit 50, and the display unit 40. The power supply device 10 also receives power from the commercial power supply 2, converts the power, and supplies it to a secondary battery provided in the secondary battery unit 20.

[0017] In addition, in the event of a power outage, for example, when the power supply from the commercial power source 2 is cut off, the power supply device 10 receives power from the secondary battery unit 20 instead of from the commercial power source 2, and switches the power supply mode so as to supply power to each of the mechanical unit 30, the control unit 50, and the display unit 40.

[0018] The secondary battery unit 20 is an uninterruptible power supply consisting of a first secondary battery 21 as a first backup power supply and a second secondary battery 22 as a second backup power supply. The secondary battery unit 20 is connected to the power supply device 10 and is controlled by the power supply device 10 so that it receives power from the power supply device 10 to be charged when there is no power outage and supplies power to the power supply device 10 when there is a power outage.

[0019] The mechanical unit 30 is a mechanical unit consisting of a card unit 31, a bankbook unit 32, a bill unit 33, and a coin unit .

[0020] The card unit 31 is a mechanical unit that handles cards (bank cards and credit cards). For example, when a transaction is executed, the card unit 31 has functions such as taking a card inserted by an operator through a card insertion / ejection slot (not shown) into the device, reading magnetic information from a magnetic stripe provided on the card, and reading stored information from a memory unit (IC chip) built into the IC card. Furthermore, when the transaction is completed, the card unit 31 ejects the card from the device through the card insertion / ejection slot.

[0021] The passbook unit 32 is a mechanical part that handles passbooks. The passbook unit 32 has functions such as taking a passbook inserted by an operator through a passbook insertion / ejection slot (not shown) into the device when a transaction is being carried out, printing on the passbook, and reading magnetic data from a magnetic tape affixed to the passbook. Furthermore, the passbook unit 32 ejects the passbook from the passbook insertion / ejection slot to the outside of the device when the transaction is completed.

[0022] The banknote unit 33 is a mechanical part that handles banknotes. The banknote unit 33 has functions such as taking banknotes inserted by an operator through a banknote insertion slot (not shown) into the device when a transaction is being executed, validating the banknotes, and stacking the banknotes in a predetermined location inside the device. Furthermore, during a transaction, the banknote unit 33 ejects banknotes that cannot be taken into the device or that should be returned to the operator from a banknote ejection slot (not shown) to the outside of the device.

[0023] The coin unit 34 is a mechanism that handles coins. For example, when a transaction is performed, the coin unit 34 has functions such as taking coins inserted by an operator through a coin insertion slot (not shown) into the device, validating the coins, and accumulating the coins in a predetermined location inside the device. Furthermore, during a transaction, the coin unit 34 ejects coins that cannot be taken into the device or coins that should be returned to the operator from a coin ejection slot (not shown) onto a tray outside the device.

[0024] The card unit 31, the bankbook unit 32, the bill unit 33, and the coin unit 34 are each a mechanical unit equipped with a transport motor for transporting the media to be handled and a drive unit for driving the motor.

[0025] The display unit 40 is configured as a touch panel display that integrates an input section and a display section, and uses, for example, an LCD (Liquid Crystal Display) or an EL (Electro-Luminescence) display. The display unit 40 is provided on the top surface of the front part of the housing.

[0026] The display unit 40 has functions such as detecting input of transaction information from the operator during a transaction, and displaying transaction information or notifications to the operator.

[0027] The control unit 50 is, for example, a computer equipped with an OS (Operating System), and is connected to the mechanical unit 30 and the display unit 40 to control them.

[0028] The control unit 50 includes, for example, a communication unit that communicates via a network, a non-volatile storage unit such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive), and a storage unit such as a RAM (Random Access Memory) and a ROM (Read Only Memory).

[0029] The control unit 50 functions as an automated transaction device by expanding the OS and application programs stored in the HDD or SSD into the RAM and ROM, and executing the programs by a CPU (Central Processing Unit).

[0030] In addition, when the power supply device 10 detects a power outage (power supply from the commercial power source 2 is cut off), the control unit 50 sends a backup start signal to the power supply device 10 indicating the start of backup processing, and causes power to be supplied from the secondary battery unit 20 to execute backup processing for the mechanical unit 30, the display unit 40, and the control unit 50.

[0031] In this description, the backup process refers to the process from completing or forcibly terminating a transaction that an operator is currently making during a power outage, having the mechanical unit 30 return cards, passbooks, banknotes, and coins that should be returned to the operator, to shutting down the OS of the control unit 50, i.e., the automated teller machine 1. The backup process may also include a backup power supply operation, which is an operation of supplying power from the secondary battery unit 20 to the mechanical unit 30 and the control unit 50 during the backup process.

[0032] Fig. 2 is a block diagram of the power supply device 10 in the automated teller machine 1 of Example 1. In Fig. 2, solid lines indicate power supply lines, and dashed lines indicate control signal lines.

[0033] The power supply device 10 includes a PFC (Power Factor Correction) circuit 100, a mechanical power conversion circuit 110, a control power conversion circuit 120, a charging circuit 130, a mechanical step-up / step-down circuit 140, a mechanical power supply voltage switching circuit 150, and a control power supply voltage switching circuit 160.

[0034] The power supply device 10 also includes a power failure detection circuit 200, a secondary battery state detection circuit 210, a secondary battery control circuit 220, and a secondary battery switching circuit 230.

[0035] The PFC circuit 100 is connected to a commercial power supply 2. The mechanical step-up / step-down circuit 140 and the control power supply voltage switching circuit 160 are connected to the secondary battery unit 20 via a secondary battery switching circuit 230.

[0036] The block diagram of the power supply device 10 shown in FIG. 2 is an example, and the power supply device 10 is not limited to this configuration example.

[0037] The PFC circuit 100 is a non-insulated DC power supply circuit (AC / DC converter). The PFC circuit 100 is a power factor correction circuit that receives power (AC voltage of 100 V to 240 V) from a commercial power source 2, converts it into a predetermined DC voltage value (primary side DC voltage), and improves the power factor during conversion.

[0038] The PFC circuit 100 includes, for example, a transistor (not shown) and controls the transistor to be turned on and off so as to match the waveform of the input AC voltage with the waveform of the AC current in the PFC circuit 100, thereby reducing harmonic components and improving the power factor.

[0039] The PFC circuit 100 also supplies the converted primary side DC voltage to the mechanical power conversion circuit 110 and the control power conversion circuit 120.

[0040] The mechanical power conversion circuit 110 is an insulated power supply circuit (DC / DC converter) that reduces the primary side DC voltage to a DC voltage value that drives the mechanical unit 30. The mechanical power conversion circuit 110 uses a forward circuit, a bridge circuit, an LLC circuit, or the like according to the power consumption of the mechanical unit 30.

[0041] The mechanical power conversion circuit 110 supplies an output voltage to the mechanical unit 30 via the mechanical power supply voltage switching circuit 150 .

[0042] The control system power conversion circuit 120 is an insulated power supply circuit (DC / DC converter) that reduces the primary side DC voltage to a DC voltage value that is driven by the control unit 50. As with the mechanism system power conversion circuit 110, the control system power conversion circuit 120 uses a forward circuit, a bridge circuit, an LLC circuit, or the like in accordance with the power consumption of the control unit 50.

[0043] Furthermore, the control system power conversion circuit 120 differs from the mechanism system power conversion circuit 110 in that it has less output power, and the output DC voltage and output on / off timing are different.

[0044] The control system power conversion circuit 120 supplies the output voltage to the control unit 50 via the control system power supply voltage switching circuit 160 .

[0045] The power supply device 10 is provided with two power conversion circuits, a mechanical power conversion circuit 110 and a control power conversion circuit 120, for the mechanical unit 30 and the control unit 50, respectively.

[0046] Therefore, compared to a system that uses a single power conversion circuit and outputs two output voltages using two secondary windings, the power supply device 10 can drive either the mechanical system power conversion circuit 110 or the control system power conversion circuit 120 independently.

[0047] The charging circuit 130 is connected between the output terminal of the control system power conversion circuit 120 and the secondary battery unit 20 .

[0048] For example, when there is no power outage (the output voltage value of the control system power conversion circuit 120 is greater than the voltage value of the secondary battery unit 20), the charging circuit 130 charges the first secondary battery 21 and the second secondary battery 22 of the secondary battery unit 20 at the output voltage value of the control system power conversion circuit 120.

[0049] In addition, the charging circuit 130 includes, for example, a diode (not shown) that blocks current from flowing from the secondary battery unit 20 to the output terminal of the control system power conversion circuit 120 during a power outage (when the output voltage value of the control system power conversion circuit 120 is less than the voltage value of the secondary battery unit 20).

[0050] The mechanical system step-up / step-down circuit 140 is an insulated power supply circuit (DC / DC converter) that increases or decreases the voltage value of the power supplied from the secondary battery unit 20 during a power outage to a DC voltage value that drives the mechanical unit 30. As with the mechanical system power conversion circuit 110, the mechanical system step-up / step-down circuit 140 uses a forward circuit, a bridge circuit, an LLC circuit, or the like in accordance with the power consumption of the mechanical unit 30.

[0051] The mechanical power supply voltage switching circuit 150 has a diode 151 and switches between the power supplied from the mechanical power conversion circuit 110 to the mechanical unit 30 and the power supplied from the mechanical step-up / step-down circuit 140 to the mechanical unit 30 .

[0052] Specifically, during a power outage, the mechanism system power supply voltage switching circuit 150 switches the current when the output voltage value of the mechanism system power conversion circuit 110 drops below the output voltage value of the mechanism system step-up / step-down circuit 140 (more precisely, when it drops below the voltage value obtained by subtracting the forward voltage value of the diode 151 from the output voltage value of the mechanism system step-up / step-down circuit 140).

[0053] The control system power supply voltage switching circuit 160 has a diode 161 and switches between the power supplied from the secondary battery unit 20 to the control unit 50 and the power supplied from the control system power conversion circuit 120 to the control unit 50 .

[0054] Specifically, during a power outage, the control system power supply voltage switching circuit 160 switches when the output voltage value of the control system power conversion circuit 120 drops below the output voltage value of the secondary battery unit 20 (more precisely, when it drops below the voltage obtained by subtracting the forward voltage value of the diode 161 from the voltage value of the secondary battery unit 20).

[0055] As a result, even during a power outage, i.e., when the power supply from the PFC circuit 100 is cut off, the mechanical power conversion circuit 110 and the control power conversion circuit 120 can supply power from the secondary battery unit 20 to the mechanical unit 30 and the control unit 50, just as when there is no power outage.

[0056] In addition, when there is no power outage, current flows (charges) from the control system power conversion circuit 120 to the secondary battery unit 20 via the charging circuit 130, so no power is supplied from the secondary battery unit 20 to the mechanism system step-up / step-down circuit 140 and the control system power supply voltage switching circuit 160.

[0057] The secondary battery state detection circuit 210 as a state detection section is connected to the connection lines between the first secondary battery 21 and the second secondary battery 22 of the secondary battery unit 20 and the secondary battery switching circuit 230, respectively.

[0058] The secondary battery status detection circuit 210 monitors the status information of the secondary batteries, such as the voltage values, charge / discharge currents, and charge / discharge times of the first secondary battery 21 and the second secondary battery 22, and transmits the status information to the secondary battery control circuit 220.

[0059] The secondary battery control circuit 220 is, for example, an integrated circuit such as a microcomputer having a nonvolatile storage unit.

[0060] The secondary battery control circuit 220 records the secondary battery status information received from the secondary battery status detection circuit 210, such as the voltage values, charge / discharge currents, and charge / discharge times of the first secondary battery 21 and the second secondary battery 22, in a memory unit.

[0061] The secondary battery control circuit 220 estimates the degree of deterioration of each of the first secondary battery 21 and the second secondary battery 22 based on the state information of each of the first secondary battery 21 and the second secondary battery 22 received from the secondary battery state detection circuit 210.

[0062] The degree of deterioration is based on an index such as SOH (State of Health) obtained based on information from the secondary battery state detection circuit 210. The secondary battery control circuit 220 also estimates the charge states, for example, the charging rates, of the first secondary battery 21 and the second secondary battery 22 based on an index such as SOC (State of Charge) obtained based on information from the secondary battery state detection circuit 210.

[0063] Generally, the degree of deterioration of a secondary battery, indicated by SOH or the like, is determined by the capacity retention rate or internal resistance increase rate from when the battery was new. The state of charge of a secondary battery, indicated by SOC or the like, is determined by the open-circuit voltage. The degree of deterioration or state of charge of a secondary battery may also be determined using voltage, charge / discharge current, or charge / discharge time.

[0064] In addition, the secondary battery control circuit 220 determines which of the first secondary battery 21 and the second secondary battery 22 has a greater degree of deterioration based on the estimated degrees of deterioration of the first secondary battery 21 and the second secondary battery 22.

[0065] That is, the secondary battery control circuit 220 determines the degree of deterioration of the first and second secondary batteries 21 and 22 based on the detection result of the secondary battery state detection circuit 210.

[0066] As described above, the secondary battery control circuit 220 functions as a deterioration determination unit that determines the degree of deterioration of the first and second secondary batteries 21 and 22.

[0067] In the first embodiment, a case will be described in which the SOC of each of the first secondary battery 21 and the second secondary battery 22 is calculated in estimating the deterioration levels of each of the first secondary battery 21 and the second secondary battery 22.

[0068] Specifically, the secondary battery control circuit 220 determines that the secondary battery having the lower SOC between the first secondary battery 21 and the second secondary battery 22 is the secondary battery with the greater degree of degradation.

[0069] Furthermore, in the event of a power outage, the secondary battery control circuit 220 receives a backup start signal from the control unit 50 and executes backup processing.

[0070] At this time, the secondary battery control circuit 220 transmits a secondary battery switching signal to the secondary battery switching circuit 230 so as to supply power from either the first secondary battery 21 or the second secondary battery 22, whichever has the least degree of deterioration.

[0071] Furthermore, the secondary battery control circuit 220 can determine whether or not, with the power capacity of each secondary battery due to incomplete charging or deterioration of the secondary battery, it is possible to complete the backup process of the automated teller machine 1 with power supply from only one of the first secondary battery 21 or the second secondary battery 22. In this case, when the secondary battery control circuit 220 determines that it is possible to complete the backup process of the automated teller machine 1 by connecting the first secondary battery 21 and the second secondary battery 22 in parallel and supplying power, it transmits a secondary battery switching signal to the secondary battery switching circuit 230 to connect the first secondary battery 21 and the second secondary battery 22 in parallel and supply power.

[0072] As described above, the secondary battery control circuit 220 functions as a backup power supply control unit that controls the secondary battery switching circuit 230 to supply power from the first secondary battery 21 or the second secondary battery 22 based on the determination result of the degree of deterioration of each of the first and second secondary batteries 21, 22. Furthermore, the secondary battery control circuit 220 switches the usage modes of the first secondary battery 21 and the second secondary battery 22 when power is supplied from the first secondary battery 21 and the second secondary battery 22 when the commercial power supply 2 is interrupted, based on the determination result of the degree of deterioration by the secondary battery control circuit 220. Furthermore, the secondary battery control circuit 220 switches the usage modes of the first secondary battery 21 and the second secondary battery 22 in the backup power supply operation of the backup process based on which of the first secondary battery 21 and the second secondary battery 22 has a greater degree of deterioration. In addition, the secondary battery control circuit 220 switches the usage mode of the first secondary battery 21 and the second secondary battery 22 in the backup power supply operation of the backup processing based on the difference between the degree of deterioration of the first secondary battery 21 and the degree of deterioration of the second secondary battery 22.

[0073] In addition, if the secondary battery control circuit 220 determines that the difference in the degree of deterioration between the first and second secondary batteries 21, 22 is greater than a predetermined value, the backup power supply operation of the backup processing may be performed using only the secondary battery with the lesser degree of deterioration between the first and second secondary batteries 21, 22.

[0074] Furthermore, the secondary battery control circuit 220 transmits to the control unit 50 information on the state of the secondary battery, such as the voltage value of the secondary battery unit 20, charge / discharge current, charge / discharge time, and the like.

[0075] The secondary battery switching circuit 230, which serves as a switching unit, switches between supplying power from the first secondary battery 21, supplying power from the second secondary battery 22, or connecting the first secondary battery 21 and the second secondary battery 22 in parallel to supply power during a power outage, based on a switching signal from the secondary battery control circuit 220.

[0076] Furthermore, the secondary battery switching circuit 230 connects the first secondary battery 21 and the second secondary battery 22 in parallel when there is no power outage, and connects them so that both secondary batteries are charged.

[0077] The power failure detection circuit 240 is connected between the commercial power supply 2 and the PFC circuit 100, and detects that a power failure has caused a cutoff of the power supply from the commercial power supply 2. When the power failure detection circuit 240 detects a power failure, it transmits a power failure detection signal to the control unit 50.

[0078] In response to the power failure detection signal received from the power failure detection circuit 240, the control unit 50 transmits a backup start signal to the secondary battery control circuit 220, causing the secondary battery unit 20 to execute a backup power supply operation to supply power.

[0079] From the above, the power supply mode of the power supply device 10 when there is no power outage is as follows.

[0080] Power is supplied from a commercial power source 2 to a mechanical power conversion circuit 110 and a control power conversion circuit 120 via a PFC circuit 100 .

[0081] In addition, the charging circuit 130 is in operation, current is supplied from the output terminal of the control system power conversion circuit 120 via the secondary battery switching circuit 230, and the first and second secondary batteries 21, 22 of the secondary battery unit 20 are being charged.

[0082] The mechanical power supply voltage switching circuit 150 is switched so as to allow power to be supplied from the mechanical power conversion circuit 110 to the mechanical unit 30. Similarly, the control power supply voltage switching circuit 160 is switched so as to allow power to be supplied from the control power conversion circuit 120 to the control unit 50.

[0083] On the other hand, the power supply mode of the power supply device 10 during a power outage is as follows.

[0084] The power supply from the commercial power source 2 to the mechanical power conversion circuit 110 and the control power conversion circuit 120 via the PFC circuit 100 is cut off. That is, the output voltages of the mechanical power conversion circuit 110 and the control power conversion circuit 120 are approximately 0V.

[0085] Furthermore, the charging circuit 130 is stopped from operating, and the current from the secondary battery switching circuit 230 to the output terminal of the control system power conversion circuit 120 is cut off.

[0086] Furthermore, power is supplied from the first secondary battery 21 to the mechanical step-up / step-down circuit 140 and the control power supply voltage switching circuit 160 via the secondary battery switching circuit 230. Therefore, the mechanical power supply voltage switching circuit 150 is switched so as to allow power to be supplied from the mechanical step-up / step-down circuit 140 to the mechanical unit 30. Similarly, the control power supply voltage switching circuit 160 is switched so as to allow power to be supplied from the first secondary battery 21 to the control unit 50 via the secondary battery switching circuit 230.

[0087] Furthermore, as described above, in the event of a power outage, the secondary battery control circuit 220 determines the degree of deterioration of the first secondary battery 21 or the second secondary battery 22, and starts a backup power supply operation so that power is supplied from the secondary battery with the lesser degree of deterioration.

[0088] As a result, the power supply device 10 in the automated teller machine 1 of the present embodiment 1 can minimize imbalance in the degree of deterioration between the first secondary battery 21 and the second secondary battery 22. Furthermore, by preventing imbalance in the degree of deterioration between the first secondary battery 21 and the second secondary battery 22, even when the first secondary battery 21 and the second secondary battery 22 are used in parallel during backup processing, it is possible to reduce the circulating current between the two secondary batteries and mitigate deterioration of the secondary batteries.

[0089] Hereinafter, details of the backup process of the automated teller machine 1 according to the first embodiment at the time of a power outage will be described with reference to FIGS.

[0090] FIG. 3 is a diagram showing a process flow FC1 of the power supply device 10 in the automated teller machine 1 according to the first embodiment at the time of a power outage.

[0091] First, the power outage detection circuit 240 of the power supply device 10 detects whether or not a power outage has occurred (step S11).

[0092] If the occurrence of a power outage is not detected (step S11: No), the power outage detection circuit 240 repeatedly executes step S11.

[0093] If the occurrence of a power outage is detected (step S11: Yes), the power outage detection circuit 240 transmits a power outage detection signal to the control unit 50 (step S12).

[0094] Thereafter, the secondary battery control circuit 220 controls the secondary battery switching circuit 230 based on the backup start signal transmitted from the control unit 50, and supplies power from the secondary battery unit 20 to each unit to perform backup processing (step S13).

[0095] FIG. 4 is a diagram showing a process flow FC2 of the control unit 50 in the automated teller machine 1 according to the first embodiment at the time of a power outage.

[0096] First, the control unit 50 detects whether or not a power outage detection signal has been received from the power outage detection circuit 240 of the power supply device 10 (step S21).

[0097] If reception of a power outage detection signal is not detected (step S21: No), the control unit 50 repeatedly executes step S21 while the automated teller machine 1 continues to operate.

[0098] If reception of the power failure detection signal is detected (step S21: Yes), the control unit 50 transmits a backup start signal to the secondary battery control circuit 220 (step S22).

[0099] In step S22, the power supply device 10 starts a backup power supply operation for power supply from the secondary battery unit 20. That is, the subsequent steps are steps during the backup process for power supply from the secondary battery unit 20.

[0100] Next, the control unit 50 determines whether the voltage value of the secondary battery unit 20 has dropped to a predetermined threshold voltage value, based on the state information received from the secondary battery control circuit 220 (step S23).

[0101] The predetermined threshold voltage value of the secondary battery unit 20 can be determined arbitrarily. In this step, a voltage value that can at least complete or forcibly terminate an ongoing transaction and perform a shutdown process of the automated teller machine 1, i.e., complete a backup process, will be described as an example of the predetermined threshold voltage value, which is a backup-enabled voltage value. However, this does not apply when the voltage values of the first and second secondary batteries 21 and 22 suddenly drop during backup due to deterioration of the first and second secondary batteries 21 and 22.

[0102] If it is determined that the voltage value of the secondary battery unit 20 has not dropped to the predetermined threshold voltage value (step S23: No), the control unit 50 continues to operate the automated teller machine 1 while repeatedly executing step S23.

[0103] When it is determined that the voltage value of the secondary battery unit 20 has dropped to the predetermined threshold voltage value (step S23: Yes), the control unit 50 determines whether the automated teller machine 1 is currently performing a transaction (step S24).

[0104] If the automated teller machine 1 determines that a transaction is currently in progress (step S24: Yes), the control unit 50 determines whether the voltage value of the secondary battery unit 20 is a voltage value that allows the current transaction to be completed (step S25).

[0105] In this step, the control unit 50 determines whether the current transaction can be completed based on the progress of the current transaction, the planned use of each of the mechanical units 30 (in particular, the planned motor drive), and the voltage value of the secondary battery unit 20.

[0106] Specifically, for example, if the current transaction is nearing the end and there is little planned use of the mechanical unit 30, the power consumption of the secondary battery unit 20 used in the transaction will be small. On the other hand, if the current transaction is nearing the beginning and there is much planned use of the mechanical unit 30, the power consumption of the secondary battery unit 20 used in the transaction will be large.

[0107] The control unit 50 determines whether or not the current transaction can be completed based on the status of the current transaction and the voltage value of the secondary battery unit 20 as described above.

[0108] If it is determined that the voltage value of the secondary battery unit 20 is a voltage value that allows the current transaction to be completed (step S25: Yes), the control unit 50 completes the transaction (step S26). In this step, the control unit 50 controls each of the mechanical units 30 to eject cards and bankbooks, and eject banknotes and coins.

[0109] Thereafter, the control unit 50 performs a shutdown process of the automated teller machine 1 (step S27).

[0110] Furthermore, if it is determined that the voltage value of the secondary battery unit 20 is not a voltage value at which the current transaction can be completed (step S25: No), the current transaction is canceled and forcibly terminated (step S25). This step includes the control unit 50 instructing each of the mechanical units 30 to eject a card and a passbook. At this time, if the operator has inserted banknotes or coins into the automated teller machine 1, the control unit 50 instructs the mechanical units 30 to eject them outside the machine.

[0111] Thereafter, the control unit 50 executes step S27 to perform the shutdown process of the automated teller machine 1.

[0112] 5 to 8 are diagrams showing backup process flows FC31 to FC34 in the automated teller machine 1 according to the first embodiment at the time of a power outage.

[0113] The backup processing flows FC31 to FC34 are executed simultaneously with step S13 of the processing flow FC1 of the power supply device 10 shown in FIG. 3 and steps S23 to S27 of the processing flow FC2 of the control unit 50 shown in FIG.

[0114] In this description, it is assumed that, of the first and second secondary batteries 21 and 22, the first secondary battery 21 is a secondary battery that is less deteriorated than the second secondary battery 22.

[0115] As shown in FIG. 5, first, the secondary battery control circuit 220 monitors the voltage values of the first and second secondary batteries 21 and 22 of the secondary battery unit 20 based on the status information of the first and second secondary batteries 21 and 22 received from the secondary battery status detection circuit 210 (step S311).

[0116] Next, the power outage detection circuit 240 detects whether a power outage has occurred (step S312). Note that the detection of the occurrence of a power outage includes the power outage detection circuit 240 detecting the power outage and transmitting a power outage detection signal to the control unit 50, and the control unit 50 transmitting a backup start signal to the secondary battery control circuit 220.

[0117] If no power outage is detected (step S312: No), the secondary battery control circuit 220 and the power outage detection circuit 240 repeatedly execute steps S311 and S312, and the secondary battery control circuit 220 monitors the voltage values of the first and second secondary batteries 21 and 22 at any time via the secondary battery state detection circuit 210.

[0118] If a power outage is detected (step S312: Yes), the secondary battery control circuit 220 determines which secondary battery has a greater degree of degradation based on the SOCs of the first and second secondary batteries 21, 22 received in step S311 (step S313). Specifically, the control unit 50 determines that the secondary battery with the lower SOC is the secondary battery with a greater degree of degradation, out of the first and second secondary batteries 21, 22.

[0119] As described above, in this description, the first secondary battery 21 is assumed to be a secondary battery that is less deteriorated than the second secondary battery 22.

[0120] Next, the secondary battery control circuit 220 determines the first secondary battery 21, which is the secondary battery with the least degree of deterioration determined in step S313, as the secondary battery to be used during backup processing (step S314).

[0121] Next, the secondary battery control circuit 220 determines whether charging of the first secondary battery 21 is complete (step S315). Specifically, for example, the control unit 50 detects that the charging current value of the first secondary battery 21 included in the status information of the first secondary battery 21 of the secondary battery unit 20 received in step S311 is equal to or less than a predetermined threshold, and determines whether charging is complete.

[0122] If it is determined that charging of the first secondary battery 21 is complete (step S315: Yes), the secondary battery control circuit 220 starts a backup process using power supply from the first secondary battery 21 (step S316).

[0123] In addition, the secondary battery control circuit 220 transmits a secondary battery switching signal to the secondary battery switching circuit 230 indicating that the first secondary battery 21 will be used for backup processing, and switches the connection mode so that the secondary battery switching circuit 230 and the first secondary battery 21 are connected.

[0124] Next, the secondary battery control circuit 220 monitors the voltage value of the first secondary battery 21 during the backup process via the secondary battery state detection circuit 210 (step S317).

[0125] Also, in this step, the secondary battery control circuit 220 transmits status information such as the voltage value of the first secondary battery 21 to the control unit 50. The status information is used in steps S23 and S25 in the processing flow FC2 of the control unit 50 shown in FIG.

[0126] Next, the secondary battery control circuit 220 determines whether the backup process has ended (step S318). The determination of the end of the backup process is made, for example, when the control unit 50 shuts down the automated teller machine 1 and the power consumption of all units including the control unit 50 becomes zero.

[0127] If it is determined that the backup process has ended (step S318: Yes), the power supply device 10 stops functioning and the power supply from the first secondary battery 21 is cut off.

[0128] If it is not determined that the backup process has ended (step S318: No), the secondary battery control circuit 220 determines whether the discharge voltage value of the first secondary battery 21 is equal to or lower than a predetermined threshold value (step S319).

[0129] As described above, the predetermined threshold value of the discharge voltage value of the first secondary battery 21 during the backup process is a voltage value that is at least sufficient to complete or forcibly terminate an ongoing transaction and perform a shutdown process of the automated teller machine 1.

[0130] If it is not determined whether the discharge voltage value of the first secondary battery 21 is equal to or less than the predetermined threshold (step S319: No), the power supply device 10 continues the backup process while repeatedly executing steps S317 to S319.

[0131] If it is not determined in step S315 that charging of the first secondary battery 21 is complete (step S315: No), the power supply device 10 proceeds to a backup processing flow FC32 in FIG. 6 (A in the figure), which will be described later.

[0132] Also, in step S319, if it is determined that the discharge voltage value of the first secondary battery 21 is equal to or less than a predetermined threshold (step S319: Yes), the power supply device 10 proceeds to the backup processing flow FC33 in Figure 7, which will be described later (B in the figure).

[0133] FIG. 6 is a diagram showing a backup process flow FC32 when it is not determined in step S315 of FIG. 5 that charging of the first secondary battery 21 is complete.

[0134] In step S315 of FIG. 5, if it is not determined that charging of the first secondary battery 21 is complete (step S315: No), the secondary battery control circuit 220 determines the second secondary battery 22 as the secondary battery to be used during backup processing instead of the first secondary battery 21, which has a smaller degree of degradation (step S321).

[0135] Next, the secondary battery control circuit 220 determines whether or not charging of the second secondary battery 22 has been completed (step S322).

[0136] If it is determined that charging of the second secondary battery 22 is complete (step S322: Yes), the secondary battery control circuit 220 starts a backup process using power supply from the second secondary battery 22 (step S323).

[0137] In addition, the secondary battery control circuit 220 transmits a secondary battery switching signal to the secondary battery switching circuit 230 indicating that the second secondary battery 22 will be used for backup processing, and switches the connection mode so that the secondary battery switching circuit 230 and the second secondary battery 22 are connected.

[0138] Next, the secondary battery control circuit 220 monitors the voltage value of the second secondary battery 22 during the backup process via the secondary battery state detection circuit 210 (step S324).

[0139] Next, the secondary battery control circuit 220 determines whether the backup process has ended (step S325).

[0140] If it is determined that the backup process has ended (step S325: Yes), the power supply device 10 stops functioning and the power supply from the second secondary battery 22 is cut off.

[0141] If it is not determined that the backup process has ended (step S325: No), the secondary battery control circuit 220 determines whether the discharge voltage value of the second secondary battery 22 is equal to or less than a predetermined threshold value (step S326).

[0142] If it is not determined whether the discharge voltage value of the second secondary battery 22 is equal to or less than the predetermined threshold (step S326: No), the power supply device 10 continues the backup process while repeatedly executing steps S324 to S326.

[0143] If it is determined that the discharge voltage value of the second secondary battery 22 is below the predetermined threshold value (step S319: Yes), the secondary battery control circuit 220 determines that it is impossible to complete the backup process using power supplied by the secondary battery unit 20, and causes the control unit 50 to shut down the automatic teller machine 1 (step S328).

[0144] Specifically, first, the secondary battery control circuit 220 transmits a forced shutdown signal indicating a command to perform a forced shutdown to the control unit 50. Upon receiving the forced shutdown signal, the control unit 50 forcibly terminates the operation of the mechanical unit 30 and shuts down the automated teller machine 1.

[0145] When the automated teller machine 1 is in the middle of a transaction, the control unit 50 may transmit status data of the transaction in progress to a management department of a bank or the like via a network.

[0146] Furthermore, the control unit 50 may display a message to the operator via the display unit 40 at the time of shutdown that the transaction will be forcibly terminated, and may also display contact information for the management department of the bank or the like.

[0147] If it is not determined in step S323 that charging of the second secondary battery 22 is complete (step S323: No), the power supply device 10 proceeds to a backup processing flow FC34 in FIG. 8 (C in the figure), which will be described later.

[0148] FIG. 7 is a diagram showing a backup processing flow FC33 when it is determined in step S319 of FIG. 5 that the discharge voltage value of the first secondary battery 21 is equal to or less than a predetermined threshold during the backup processing.

[0149] In step S319 of FIG. 5, if it is determined that the discharge voltage value of the first secondary battery 21 is equal to or lower than a predetermined threshold value (step S319: Yes), the secondary battery control circuit 220 switches the second secondary battery 22 to be used during backup processing instead of the first secondary battery 21 currently in use (step S331).

[0150] Specifically, the secondary battery control circuit 220 transmits a secondary battery switching signal to the secondary battery switching circuit 230 to switch the power supply from the secondary battery unit 20 from the first secondary battery 21 to the second secondary battery 22, thereby switching the connection mode so that the secondary battery switching circuit 230 and the second secondary battery 22 are connected.

[0151] Next, the secondary battery control circuit 220 monitors the voltage value of the second secondary battery 22 during the backup process via the secondary battery state detection circuit 210 (step S332).

[0152] Next, the secondary battery control circuit 220 determines whether the backup process has ended (step S333).

[0153] If it is determined that the backup process has ended (step S333: Yes), the power supply device 10 stops functioning and the power supply from the second secondary battery 22 is cut off.

[0154] If it is not determined that the backup process has ended (step S333: No), the secondary battery control circuit 220 determines whether the discharge voltage value of the second secondary battery 22 is equal to or less than a predetermined threshold value (step S334).

[0155] If it is not determined whether the discharge voltage value of the second secondary battery 22 is equal to or less than the predetermined threshold (step S334: No), the power supply device 10 continues the backup process while repeatedly executing steps S332 to S334.

[0156] If it is determined that the discharge voltage value of the second secondary battery 22 is equal to or lower than the predetermined threshold value (step S334: Yes), the secondary battery control circuit 220 determines that it is impossible to complete the backup process using power supplied by the secondary battery unit 20, and causes the control unit 50 to shut down the automatic teller machine 1 (step S335).

[0157] FIG. 8 is a diagram showing a backup process flow FC34 when it is not determined in step S322 of FIG. 6 that charging of the second secondary battery 22 is complete.

[0158] That is, the backup processing flow FC34 is a backup processing flow when, when checking the charge states of the first and second secondary batteries 21 and 22 before starting the backup processing, it is determined that neither the first nor second secondary batteries 21 and 22 has completed charging.

[0159] 5 and step S322 in FIG. 6, if it is not determined that charging of the first secondary battery 21 is complete (step S315: No, step S322: No), the secondary battery control circuit 220 determines whether or not it is possible to complete the backup process of the automated teller machine 1 by connecting the first secondary battery 21 and the second secondary battery 22 in parallel and supplying power thereto (step S341). The secondary battery control circuit 220 estimates the charging rates of the first and second secondary batteries 21 and 22 from the respective charging current values of the first and second secondary batteries 21 and 22 received in step S311 in FIG. 5. Furthermore, the secondary battery control circuit 220 determines whether or not it is possible to complete the backup process of the automated teller machine 1 by connecting the first secondary battery 21 and the second secondary battery 22 in parallel and supplying power thereto, based on the estimated charging rates of the first and second secondary batteries 21 and 22.

[0160] If it is determined that the backup process of the automated teller machine 1 can be completed by connecting the first secondary battery 21 and the second secondary battery 22 in parallel and supplying power (step S341: Yes), the secondary battery control circuit 220 starts the backup process by supplying power from the second secondary battery 22 (step S342).

[0161] That is, the secondary battery control circuit 220 switches the usage mode of the first secondary battery 21 and the second secondary battery 22 during backup power supply operation during backup processing based on the charging rate of the first secondary battery 21 and the charging rate of the second secondary battery 22.

[0162] In addition, during backup processing, if neither the charging rate of the first secondary battery 21 nor the charging rate of the second secondary battery 22 exceeds a predetermined value, the secondary battery control circuit 220 switches the usage mode during backup power supply operation to a mode in which both the first secondary battery 21 and the second secondary battery 22 are used.

[0163] In addition, the secondary battery control circuit 220 transmits a secondary battery switching signal to the secondary battery switching circuit 230 indicating that the first and second secondary batteries 21, 22 are to be connected in line for backup processing, causing the secondary battery switching circuit 230 to switch the connection mode so that the first secondary battery 21 and the second secondary battery 22 are connected in parallel.

[0164] Next, the secondary battery control circuit 220 monitors the voltage values of the first and second secondary batteries 21, 22 connected in parallel during the backup process (hereinafter, the voltage values of the first and second secondary batteries 21, 22 connected in parallel will be simply referred to as the voltage value of the secondary battery unit 20) via the secondary battery state detection circuit 210 (step S343).

[0165] Next, the secondary battery control circuit 220 determines whether the backup process has ended (step S344).

[0166] If it is determined that the backup process has ended (step S344: Yes), the power supply device 10 stops functioning and the power supply from the secondary battery unit 20 is cut off.

[0167] If it is not determined that the backup process has ended (step S344: No), the secondary battery control circuit 220 determines whether the discharge voltage value of the secondary battery unit 20 is equal to or less than a predetermined threshold value (step S345).

[0168] If it is not determined whether the discharge voltage value of the secondary battery unit 20 is equal to or less than the predetermined threshold value (step S345: No), the power supply device 10 continues the backup process while repeatedly executing steps S343 to S345.

[0169] If it is determined that the discharge voltage value of the secondary battery unit 20 is equal to or lower than the predetermined threshold value (step S345: Yes), the secondary battery control circuit 220 determines that it is impossible to complete the backup process using power supplied by the secondary battery unit 20, and causes the control unit 50 to shut down the automatic teller machine 1 (step S346).

[0170] According to the above processing flow, in the event of a power outage, the secondary battery control circuit 220 determines the degree of deterioration of the first secondary battery 21 or the second secondary battery 22, and starts backup processing so that power is supplied preferentially from the secondary battery with the lesser degree of deterioration.

[0171] As a result, the power supply device 10 in the automated teller machine 1 of the present embodiment 1 can minimize imbalance in the degree of deterioration between the first secondary battery 21 and the second secondary battery 22. Furthermore, by preventing imbalance in the degree of deterioration between the first secondary battery 21 and the second secondary battery 22, even when the first secondary battery 21 and the second secondary battery 22 are used in parallel during backup processing, it is possible to reduce the circulating current between the two secondary batteries and mitigate deterioration of the secondary batteries. [Example]

[0172] In the first embodiment, a case has been described in which the secondary battery control circuit 220 estimates the degree of deterioration of each of the first secondary battery 21 and the second secondary battery 22 based on the SOC of the first secondary battery 21 and the second secondary battery 22.

[0173] However, when the SOC is estimated based only on the voltage values of the first and second secondary batteries 21 and 22, there is a possibility that the deterioration cannot be accurately estimated.

[0174] Specifically, for example, if one secondary battery with a low degree of degradation has just been used and is almost uncharged, and the other secondary battery with a high degree of degradation has fully charged, the relationship between the voltage value and the degree of degradation may be reversed.

[0175] Therefore, in the second embodiment, the degree of deterioration of each secondary battery is estimated based on the cumulative amount of discharged power of each of the first and second secondary batteries 21 and 22 during past backup processes.

[0176] The configuration of the automated teller machine 1 and the configuration of the power supply device 10 and each processing flow are the same as those in the first embodiment, so only the differences from the first embodiment will be described.

[0177] The secondary battery control circuit 220 records in a memory unit the voltage values, discharge current amounts, and backup processing times of the first and second secondary batteries 21 and 22 received from the secondary battery state detection circuit 210 during the backup processing for each backup processing that has been performed up to now.

[0178] In addition, the secondary battery control circuit 220 integrates the recorded voltage values, discharge current amounts, and backup processing times of the first and second secondary batteries 21, 22 to calculate the amount of discharged power supplied by each of the first and second secondary batteries 21, 22 to each unit during the backup processing, and records this in the memory unit.

[0179] Furthermore, the secondary battery control circuit 220 adds up the amount of discharged power for each backup process that has been executed up to the present time, and records this as the cumulative amount of discharged power in the storage unit.

[0180] The secondary battery control circuit 220 estimates whether the degree of deterioration of each of the first and second secondary batteries 21, 22 is large based on the accumulated discharged electric power amount recorded above.

[0181] Specifically, the secondary battery control circuit 220 estimates that the greater the cumulative amount of discharged power, that is, the greater the amount of power consumed up to now, the greater the degree of degradation of the secondary battery.

[0182] That is, the secondary battery control circuit 220 determines that the secondary battery with the larger cumulative amount of discharged power out of the first and second secondary batteries 21, 22 is the secondary battery with the larger degree of degradation.

[0183] The degree of deterioration of the first and second secondary batteries 21 and 22 is determined based on the cumulative amount of discharged power in step S313 of the backup processing flow FC31 shown in FIG.

[0184] Using FIG. 9, the details of determining whether the deterioration levels of the first and second secondary batteries 21 and 22 are large or small based on the cumulative discharged power amounts of the two secondary batteries will be described.

[0185] FIG. 9 is a diagram showing an example of the cumulative discharged power amounts of the first secondary battery 21 and the second secondary battery 22 in the automated teller machine 1 according to the second embodiment.

[0186] In this embodiment, a case will be described in which backup processing has been performed four times up to now.

[0187] The horizontal axis of Fig. 9 indicates the operating time of the automated teller machine 1, including the backup processing period. The dashed line sections on the horizontal axis of Fig. 9 indicate the backup processing periods BAT1, BAT2, BAT3, and BAT4 that have been executed up to now. The sections between each backup processing period are sections during which there is no power outage and power is supplied to the automated teller machine 1 from the commercial power source 2.

[0188] 9 indicates the cumulative discharged power amounts of the first and second secondary batteries 21 and 22, respectively.

[0189] The backup processing period BAT1 is, for example, a period during which backup processing is performed over a long period of time.

[0190] Before the start of the backup processing period BAT1, the accumulated discharged power amounts are equal between the first and second secondary batteries 21 and 22. The secondary battery control circuit 220 determines that the deterioration levels of the first and second secondary batteries 21 and 22 are equal.

[0191] Therefore, first, the power supply backup process starts from the first secondary battery 21. Thereafter, the power supply backup process is switched to the second secondary battery 22 in the middle of the backup process period BAT1.

[0192] After the backup processing period BAT1, the cumulative discharged electric power amounts of the first and second secondary batteries 21 and 22 are approximately equal to each other.

[0193] The backup processing period BAT2 is, for example, a period during which a large amount of power is required for backup processing.

[0194] Before the start of the backup processing period BAT2, the cumulative discharged power amounts are equal between the first and second secondary batteries 21 and 22. Although the first and second secondary batteries 21 and 22 are at the same level of deterioration, the secondary battery control circuit 220 determines that backup processing of power supply by connecting the first and second secondary batteries 21 and 22 in parallel is necessary because the power required for backup processing is large.

[0195] Therefore, during the backup processing period BAT2, the first and second secondary batteries 21 and 22 are connected in parallel to perform the power supply backup processing. Therefore, the cumulative discharged power amounts of the first and second secondary batteries 21 and 22 after the backup processing period BAT2 are also approximately equal.

[0196] The backup processing period BAT3 is, for example, a short period during which little power is required.

[0197] Before the start of the backup processing period BAT3, the accumulated discharged power amounts are approximately equal between the first and second secondary batteries 21 and 22. The secondary battery control circuit 220 determines that the deterioration levels of the first and second secondary batteries 21 and 22 are equal.

[0198] Therefore, during the backup processing period BAT3, only the first secondary battery 21 is used to perform the backup processing of the power supply.

[0199] Therefore, after the backup processing period BAT2, the first secondary battery 21 has a larger cumulative discharged power amount than the second secondary battery 22.

[0200] The backup processing period BAT4 is, for example, a short period during which little power is required.

[0201] Before the start of the backup processing period BAT4, the first secondary battery 21 has a larger cumulative discharged power amount than the second secondary battery 22. The secondary battery control circuit 220 determines that the first secondary battery 21 has a greater degree of deterioration than the second secondary battery 22.

[0202] Therefore, during the backup processing period BAT4, the second secondary battery 22 is used to perform backup processing of the power supply.

[0203] Furthermore, the cumulative discharged power amounts of the first and second secondary batteries 21 and 22 after the backup processing period BAT4 are approximately equal to each other.

[0204] In this way, the degree of deterioration is estimated based on the cumulative discharged power amount of each of the first and second secondary batteries 21 and 22, i.e., the amount of power actually consumed from the secondary batteries, and the secondary battery with the least degree of deterioration is used for backup processing.

[0205] Therefore, the secondary battery control circuit 220 can more accurately estimate the degree of deterioration of each of the first and second secondary batteries 21, 22 and determine whether the degree of deterioration is large or small in step S313 of the backup processing flow FC31 shown in FIG.

[0206] Therefore, the power supply device 10 in the automated teller machine 1 of the second embodiment can make the bias in the degree of deterioration of the first secondary battery 21 and the second secondary battery 22 more uniform.

[0207] Furthermore, even when the first secondary battery 21 and the second secondary battery 22 are used in parallel during backup processing, it is possible to further reduce the circulating current between the two secondary batteries, thereby reducing deterioration of the secondary batteries.

[0208] The configurations of the automated teller machine 1 and the power supply device 10 included therein described in the first and second embodiments are merely examples of implementation, and the present invention is not limited to these configuration examples.

[0209] For example, in this description, the secondary battery unit 20 is described as consisting of two secondary batteries, the first and second secondary batteries 21 and 22, but the secondary battery unit 20 may include three or more secondary batteries.

[0210] Furthermore, for example, the secondary battery control circuit 220 has been described as an integrated circuit such as a microcomputer having a non-volatile memory unit, but it may be any circuit that includes a register circuit, a counter circuit, and a comparison circuit and is capable of realizing the above functions.

[0211] Also, for example, instead of the secondary battery control circuit 220, the function may be realized by an application program stored in the HDD or SSD of the control unit 50.

[0212] As described above, the described embodiments are not intended to limit the scope of the invention. The described embodiments can be implemented in various forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These modifications are also included within the scope and spirit of the invention, and are also included in the inventions described in the claims and their equivalents. [Explanation of symbols]

[0213] 1. Automatic teller machine 2 Commercial power supply 10 Power supply 20 Secondary battery unit 21 First secondary battery 22 Secondary battery 30 Mecha Unit 31 Card Unit 32 Passbook unit 33 Banknote Unit 34 coin units 40 Display Unit 50 Control Unit 100 PFC circuit 110 Mechanical power conversion circuit 120 Control system power conversion circuit 130 Charging circuit 140 Mechanical step-up / step-down circuit 150 Mechanical power supply voltage switching circuit 160 Control system power supply voltage switching circuit 151, 161 Diodes 210 Secondary battery state detection circuit 220 Secondary battery control circuit 230 Secondary battery switching circuit 240 Power outage detection circuit

Claims

1. An automated teller machine for dealing in cash, a first backup power supply unit and a second backup power supply unit capable of supplying power to the automated teller machine in place of power supplied from a commercial power source; a state detection unit that detects states of the first backup power supply unit and the second backup power supply unit; a deterioration determination unit that determines a deterioration level of the first backup power supply unit and the second backup power supply unit based on a detection result of the state detection unit; a backup power supply control unit that switches the usage modes of the first backup power supply unit and the second backup power supply unit when power is supplied by the first backup power supply unit and the second backup power supply unit based on a determination result of the degradation determination unit when the commercial power supply is interrupted.

2. 2. The automated teller machine according to claim 1, wherein the backup power supply control unit switches the usage mode based on whether the degree of deterioration of the first backup power supply unit or the degree of deterioration of the second backup power supply unit is greater.

3. 3. The automated teller machine according to claim 2, wherein the backup power supply control unit switches the usage mode based on the magnitude of the difference between the deterioration level of the first backup power supply unit and the deterioration level of the second backup power supply unit.

4. 4. The automated teller machine according to claim 3, wherein, when a difference between a degree of deterioration of the first backup power supply unit and a degree of deterioration of the second backup power supply unit is greater than a predetermined value, the backup power supply control unit switches the usage mode to a mode in which only one of the first backup power supply unit and the second backup power supply unit having a smaller degree of deterioration is used.

5. 5. The automated teller machine according to claim 1, wherein the backup power supply control unit switches the usage mode based on a charging rate of the first backup power supply unit and a charging rate of the second backup power supply unit.

6. 6. The automated teller machine according to claim 5, wherein, during the backup process, if neither the charge rate of the first backup power supply unit nor the charge rate of the second backup power supply unit exceeds a predetermined value, the backup power supply control unit switches the usage mode to a mode in which both the first backup power supply unit and the second backup power supply unit are used.

7. 2. The automated teller machine according to claim 1, wherein the usage mode is the usage mode of the first backup power supply unit and the second backup power supply unit when supplying power for a backup process that is executed when the commercial power supply is interrupted.

8. A computer installed in an automated teller machine that handles cash and has a first backup power supply unit and a second backup power supply unit that can supply power to the automated teller machine instead of power supplied from a commercial power source, a deterioration determination step of determining a deterioration degree of the first backup power supply unit and the second backup power supply unit; and a usage mode switching step of switching usage modes of the first backup power supply unit and the second backup power supply unit when power is supplied by the first backup power supply unit and the second backup power supply unit upon interruption of the commercial power supply, based on a determination result in the deterioration determination step.

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