Uninterruptible power supply, uninterruptible power system, and charge / discharge control method

Abstract

To provide an uninterruptible power supply capable of avoiding temporary unavailability of the related device by using a device capable of charging a removable rechargeable battery in the event of a power supply interruption from the external power source.SOLUTION: An uninterruptible power supply 1 is configured so as to, while external power is being supplied from an external power source including the power grid 200, supply external power to electrical equipment 2 and a financial terminal 3, and when detecting that the external power supply has been cut off, a supply path is configured to supply the discharge power discharged from a battery 15 to the financial terminal 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an uninterruptible power supply device, an uninterruptible power supply system, and a charge / discharge control method. [Background technology]

[0002] In recent years, large-capacity rechargeable batteries have appeared due to the spread of electric vehicles, etc. For example, Patent Document 1 discloses a technology in which a battery exchange device that charges a removable rechargeable battery used in an electric vehicle is used as a backup power source for a commercial power source. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-29635 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional technology disclosed in Patent Document 1, the target device is normally supplied with power directly from a commercial power source, and when the commercial power supply is interrupted, the power supply source is switched from the commercial power source to the battery exchange device. Therefore, when the commercial power supply is interrupted, there is a problem that the power supply to the target device is temporarily cut off due to a time lag, causing the target device to become temporarily unusable. For example, if the target device is a financial terminal, even a very short stop can have a large impact.

[0005] The present invention has been made in consideration of the above background, and aims to use a device for charging a removable rechargeable battery to prevent the target equipment from becoming temporarily unusable when the power supply from an external power source is interrupted. [Means for solving the problem]

[0006] As one aspect for solving the above problem, an uninterruptible power supply device that supplies power to an equipment includes a storage section that detachably houses a plurality of secondary batteries capable of supplying power to the equipment, a charging section that charges the secondary batteries housed in the storage section, a connection switching section that switches between a supply path that supplies external power from an external power source to the equipment and the charging section and a supply path that supplies discharged power from the secondary batteries housed in the storage section to the equipment, and a control section that controls the storage section, the charging section, and the connection switching section, wherein while the external power is being supplied, the control section controls the connection switching section to configure a supply path that supplies the external power to the equipment, and when it detects that the supply of external power has been cut off, it controls the connection switching section to configure a supply path that supplies discharged power discharged from the secondary batteries to the equipment. Effect of the Invention

[0007] According to the present invention, by using a device for charging a removable rechargeable battery, it is possible to prevent a target device from becoming temporarily unusable when the power supply from an external power source is interrupted. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the configuration of a power system according to a first embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of the configuration of a connection switching unit according to the first embodiment. [Diagram 3] FIG. 4 is a diagram showing an example of the configuration of a management table according to the first embodiment. [Figure 4] 4 is a flowchart showing an example of a charge / discharge process according to the first embodiment. [Diagram 5] 5 is a flowchart showing an example of a charge / discharge relay control process according to the first embodiment. [Figure 6] FIG. 4 is a diagram showing a display example in the power system according to the first embodiment. [Figure 7] FIG. 11 is a diagram showing an example of the configuration of a power system according to a second embodiment. [Figure 8]FIG. 11 is a diagram showing a configuration example of a power system according to a third embodiment. [Figure 9] FIG. 13 is a diagram showing a configuration example of a power system according to a fourth embodiment. [Figure 10] FIG. 13 is a diagram showing a configuration example of a power system according to a fifth embodiment. [Figure 11] FIG. 13 is a diagram showing an example of the configuration of a mode management table according to the fifth embodiment. [Figure 12] FIG. 13 is a diagram showing an example of the configuration of a mode schedule management table according to the fifth embodiment. [Figure 13] 13 is a flowchart showing an example of a charge / discharge relay control process according to the fifth embodiment. [Figure 14A] FIG. 13 is a diagram showing a display example in a power system according to a fifth embodiment. [Figure 14B] FIG. 13 is a diagram showing a display example in a power system according to a fifth embodiment. [Figure 14C] FIG. 13 is a diagram showing a display example in a power system according to a fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. This embodiment is merely an example for realizing the present invention, and does not limit the technical scope of the present invention. Not all of the elements and their combinations described in this embodiment are essential to the solution of the invention.

[0010] In the following description, the same components are generally assigned the same reference numerals, and repeated description is omitted. The number of each component in the following description is not limited unless otherwise noted. In the following description, the same components are described with reference numerals including suffixes when distinguishing between them, and with reference numerals excluding the suffixes when describing them without distinction. For example, the reference numerals 15a and 15b including suffixes a and b are used when describing batteries 15a and 15b with distinction between them, and the reference numeral 15 excluding the suffixes is used when describing them without distinction.

[0011] In the following explanation, the processing performed by a program may be described. A computer performs processing defined by a program using a processor (e.g., a CPU (Central Processing Unit), a GPU (Graphics Processing Unit)) while using memory in a main storage device, etc. Therefore, the processor may be the entity that performs processing by executing a program. The processor executes a program to realize a functional unit that performs processing.

[0012] Similarly, the subject of processing performed by executing a program may be a controller, device, system, computer, or node having a processor. The subject of processing performed by executing a program may be a computing unit, and may include a dedicated circuit that performs specific processing. The dedicated circuit is, for example, a field-programmable gate array (FPGA) or an application specific integrated circuit (ASIC).

[0013] In the following explanation, data will be explained in table format. However, the data format is not limited to table format, and other data formats such as queues, lists, and CSV (Comma Separated Value) may be used. Since data does not depend on the data format, a "table" can be called "information". Each item of data can also be called information.

[0014] In the following description, multiple embodiments are disclosed, but embodiments in which at least a portion of the configuration of one embodiment is added to another embodiment, or at least a portion of the configuration of one embodiment is substituted for the configuration of another embodiment, are also included in the embodiments disclosed in this specification.

[0015] In the following embodiment, an example is shown in which a device capable of charging a detachable secondary battery for a two-wheeled vehicle is used as a backup power source for a financial terminal installed in a financial institution. However, the present invention is not limited to this, and the device can be used as a backup power source for any device in any industry.

[0016] [Embodiment 1] (Configuration of power system S according to embodiment 1) FIG. 1 is a diagram showing a configuration example of a power system S according to the first embodiment. The power system S includes an uninterruptible power supply 1, an electric device 2, and a financial terminal 3. The uninterruptible power supply 1 is also called a UPS (Uninterruptible Power System). The uninterruptible power supply 1 receives power from a power system 200 via a switchboard (not shown) and a distribution board 4. The electric device 2 is a target device for power peak shifting (for example, a device consuming a large amount of power such as a refrigerator that has a high peak shift effect). The financial terminal 3 is a terminal used in a financial institution, and is a device to which backup power is supplied by the uninterruptible power supply 1 in order to avoid a stop due to a supply interruption of external power. The financial terminal 3 is, for example, a CTM (Counter Teller Machine) or an ATM (Automatic Teller Machine). In this embodiment, an example in which a power system is used as an external power source will be described, but the external power source is not limited to a power system, and may be a commercial power source, a renewable energy power source, a fuel cell, or a combination of these.

[0017] In this embodiment, the uninterruptible power supply 1 provides a power backup function for a financial terminal in a financial institution. However, the present invention is not limited to this. The uninterruptible power supply 1 may provide a power backup function for devices other than financial terminals of organizations or individuals other than financial institutions.

[0018] The uninterruptible power supply 1 is configured to include a control unit 11, a connection switching unit 12, battery management units 13a and 13b, and storage units 14a and 14b. In Fig. 1, the dashed lines connecting the control unit 11 and the connection switching unit 12, and the control unit 11 and the battery management unit 13 respectively represent control lines. Meanwhile, the solid lines connecting the power system 200 and the distribution board 4, the distribution board 4 and the connection switching unit 12, the connection switching unit 12 and the battery management unit 13, and the connection switching unit 12 and the electric device 2 and the financial terminal 3 respectively represent power supply lines.

[0019] The control unit 11 is a processor that controls the connection switching unit 12, the battery management unit 13, and the storage unit 14. The control unit 11 has a management table 11a and a relay control unit 11b. The management table 11a will be described later with reference to Fig. 3. The control unit 11 also includes a charge / discharge controller (not shown).

[0020] The relay control unit 11b controls the relay included in the connection switching unit 12 based on the state of the battery 15 acquired by communicating with the battery management unit 13.

[0021] While external power is being supplied from an external power source including the power system 200, the relay control unit 11b controls the connection switching unit 12 to configure a supply path for supplying external power to the electric device 2 and the financial terminal 3. The relay control unit 11b also controls the connection switching unit 12 to configure a supply path for supplying external power to the charging unit as charging power so as to charge the battery 15. The charging unit is a normal charging unit 12b and a quick charging unit 12c, which will be described later.

[0022] Furthermore, when the relay control unit 11b detects that the supply of external power has been cut off, it controls the connection switching unit 12 to configure a supply path for supplying the discharged power discharged from the battery 15 to the financial terminal 3. The control unit 11 detects that the supply of external power has been cut off, for example, by monitoring the external power input to the connection switching unit 12.

[0023] Furthermore, when relay control unit 11b detects that the amount of power supplied from the external power source is insufficient for the amount of power required by electrical device 2 and / or financial terminal 3, it controls connection switching unit 12 to configure a supply path for supplying discharged power of battery 15 to electrical device 2 and / or financial terminal 3 in addition to the external power. The shortage of external power for the amount of power required is detected, for example, by control unit 11 monitoring the external power input to connection switching unit 12.

[0024] Moreover, the relay control unit 11b stops the supply of external power to the electric device 2 while the external power is being supplied during the daytime, while controlling the connection switching unit 12 to configure a supply path for supplying the discharged power discharged from the battery 15 to the electric device 2. Meanwhile, the battery 15 is not charged during the daytime, but during the nighttime. For such schedule management, a timer can be used to cut or shift the daytime power peak of the electric device 2 that consumes a large amount of power. That is, when considering the power cost of the electric device 2, the power cost can be reduced by shifting the peak to nighttime power consumption when electricity rates are lower than during the daytime when the power supply and demand are tight.

[0025] The connection switching unit 12 switches the supply path for supplying power to the electric device 2, the financial terminal 3, and the normal charging unit 12b and quick charging unit 12c (FIG. 2) described below. Specifically, the connection switching unit 12 configures a supply path for supplying power from the power system 200 to the electric device 2, the financial terminal 3, and the battery management unit 13 in response to an instruction from the control unit 11. Also, the connection switching unit 12 configures a supply path for supplying discharged power from the battery 15 accommodated in the accommodation unit 14 to the electric device 2 and the financial terminal 3 in response to an instruction from the control unit 11. The configuration of the connection switching unit 12 will be described in detail later with reference to FIG. 2.

[0026] The battery management unit 13 is a BMS (Battery Management System). The battery management unit 13 manages the state of the battery 15 connected to the device itself under the control of the control unit 11, and controls charging and discharging of the battery 15.

[0027] The storage unit 14 is a slot that detachably stores the battery 15, and includes a connection terminal (not shown) that electrically connects the battery 15 to the battery management unit 13.

[0028] The storage section 14 also includes a locking mechanism 141 that locks the battery 15 stored in the storage section 14 under the control of the control section 11 so that the connection terminal cannot be removed or pulled out from the storage section 14 during discharging. The locking mechanism 141 restricts the attachment and detachment of the battery 15 stored in the storage section 14 to the storage section 14 and the connection terminal. When the battery 15 is discharging as a backup power source, the control section 11 controls the locking mechanism 141 to restrict the attachment and detachment of the battery to the storage section 14 and the connection terminal.

[0029] Even if the battery 15 is discharging as a backup power source, there may be at least one battery 15 whose SoC (State Of Charge) is equal to or higher than a predetermined value and capable of supplying sufficient discharge power to the financial terminal 3 as a backup power source. In this case, the batteries 15 other than the battery 15 capable of supplying sufficient discharge power to the financial terminal 3 as a backup power source are not restricted by the locking mechanism 141 and are unlocked.

[0030] In this embodiment, the uninterruptible power supply 1 includes two sets of a battery management unit 13a, a storage unit 14a, and a battery 15a, and a battery management unit 13b, a storage unit 14b, and a battery 15b. However, the number of battery management units 13, storage units 14, and batteries 15 included in the uninterruptible power supply 1 is not limited to two, and may be any number as long as there are a plurality of sets.

[0031] (Configuration of the connection switching unit 12 according to the first embodiment) 2 is a diagram showing an example of the configuration of the connection switching unit 12 according to embodiment 1. The connection switching unit 12 includes an inverter unit 12a, a normal charging unit 12b, a rapid charging unit 12c, a charging unit selection unit 12d, a charging relay unit 12e, and an output relay unit 12f.

[0032] The inverter unit 12a converts the discharge power of the battery 15 output from the output relay unit 12f from DC to AC and outputs it to the outside. The inverter unit 12a also has a bypass function that outputs the AC external power input from the power system 200 through the distribution board 4 directly to the outside under the control of the control unit 11.

[0033] Further, under the control of the control unit 11, the inverter unit 12a outputs a composite power obtained by combining the AC external power from the power system 200 input from the distribution board 4 and the power obtained by converting the discharge power of the battery 15 from DC to AC and output from the output relay unit 12f. Under the control of the control unit 11, the inverter unit 12a can output a composite power that is equal to or higher than the rated power of the commercial power source of the output system.

[0034] Further, under the control of the control unit 11, the inverter unit 12a cuts off the external power input from the power system 200 via the distribution board 4, and outputs only the discharge power of the battery 15 converted from DC to AC to the outside.

[0035] The normal charging unit 12b is a charger that charges the battery 15 accommodated in the accommodation unit 14 at a first charging speed with external power from the power system 200 input from the distribution board 4 under the control of the control unit 11. The rapid charging unit 12c is a charger that rapid charges the battery 15 accommodated in the accommodation unit 14 at a second charging speed faster than the first charging speed with external power from the power system 200 input from the distribution board 4 under the control of the control unit 11.

[0036] The charging unit selection unit 12d includes a relay. The charging unit selection unit 12d controls the relay based on the type, SoC, and rapid charging setting of the battery 15 accommodated in the accommodation unit 14 under the control of the control unit 11. The charging unit selection unit 12d controls the relay to select the normal charging unit 12b or the rapid charging unit 12c to be used for charging the battery 15, and connects it to the charging relay unit 12e.

[0037] The charging relay unit 12e includes a relay. The charging relay unit 12e, under the control of the control unit 11, connects the battery 15 to be charged among the batteries 15 housed in the housing unit 14 to the normal charging unit 12b or the quick charging unit 12c.

[0038] The output relay unit 12f includes a relay. Under the control of the control unit 11, the output relay unit 12f connects the battery 15 to be charged among the batteries 15 housed in the housing unit 14 to the inverter unit 12a.

[0039] (Configuration of management table 11a according to the first embodiment) 3 is a diagram showing an example of the configuration of the management table 11a according to the first embodiment. The management table 11a includes specification information such as the type of the battery 15, state information such as the SoC of the battery 15, and setting information of the battery 15. For example, the management table 11a stores a battery ID, a battery type, a rated capacity, a quick charge setting, an SoC, a State of Health (SOH), a current, a battery voltage, a charging unit voltage, a temperature, a control state, and a charging / discharging profile.

[0040] The battery type and rated capacity are examples of specification information of the battery 15. The SoC, SOH, current, battery voltage, charging unit voltage, temperature, and control state are examples of status information of the battery 15. The status information of the battery 15 is periodically acquired via the battery management unit 13. The quick charge setting and the charge / discharge profile are examples of setting information set regarding the control of the battery 15.

[0041] The battery ID indicates the type of battery 15 (battery 15a, 15b). The battery type is information indicating, for example, the type of battery that can be quickly charged (described later) or the type of battery that can only be normally charged, which is a charging speed slower than quick charging, and may be model number information. The rated capacity is the full charge capacity that the battery 15 can charge and discharge in an undegraded state. The quick charge setting is setting information indicating whether or not to quickly charge the battery 15 when quick charging is possible.

[0042] SoC represents the charging rate or state of charge of the battery 15. SOH is an index representing the health or deterioration state of the battery 15, and is expressed as the ratio of the fully charged capacity in a deteriorated state to the rated capacity.

[0043] The current is the value of the current flowing through the battery 15, which is obtained via the battery management unit 13. The battery voltage is the voltage value of the battery 15, which is obtained via the battery management unit 13. The charging unit voltage is the voltage value of the charging unit that charges the battery 15, which is obtained via the battery management unit 13. The temperature is the temperature of the battery 15, which is obtained via the battery management unit 13. The control state is the control state of the battery 15, which is any of a charging state, a discharging state, and a stopped state, which is obtained via the battery management unit 13.

[0044] The charge / discharge profile is information for each battery 15 that defines the transition over time of the current and voltage of the battery 15 when the battery 15 is charged or discharged, with the horizontal axis representing time and both vertical axes representing the current and voltage of the battery 15. When charging or discharging the battery 15, the control unit 11 controls the current and voltage during charging and discharging based on the charge / discharge profile corresponding to each battery 15.

[0045] (Charge / discharge process according to embodiment 1) 4 is a flowchart showing an example of a charge / discharge process according to embodiment 1. The charge / discharge process according to embodiment 1 is started when the uninterruptible power supply 1 is powered on, and is repeatedly executed until a termination condition such as a system stop instruction is satisfied.

[0046] First, in step S11, the control unit 11 initializes the uninterruptible power supply 1. Next, in step S12, the control unit 11 displays a display screen 1D (FIG. 6) to be described later on a display (not shown) provided in the uninterruptible power supply 1 based on, for example, the current charge amount of the battery 15, and reads button operations.

[0047] Next, in step S13, the control unit 11 judges whether the operation time counter initialized in step S11 or step S18 indicates that T1 seconds (e.g., 0.25 seconds) have elapsed. If the operation time counter indicates that T1 seconds have elapsed (step S13: YES), the control unit 11 proceeds to step S14. On the other hand, if the operation time counter indicates that T1 seconds have not yet elapsed (step S13: NO), the control unit 11 proceeds to step S15.

[0048] Next, in step S14, the control unit 11 acquires, via the battery management unit 13, the battery voltage and the charging unit voltage of the battery 15 housed in the housing unit 14 and electrically connected to the battery management unit 13.

[0049] Next, in step S15, the control unit 11 judges whether the operation time counter indicates that T2 seconds (T2>T1, for example, 1.0 seconds) have elapsed. If the operation time counter indicates that T2 seconds have elapsed (step S15 YES), the control unit 11 proceeds to step S16. On the other hand, if the operation time counter indicates that T2 seconds have not yet elapsed (step S15 NO), the control unit 11 proceeds to step S19.

[0050] In step S16, the control unit 11 executes a charge / discharge relay control process. Details of the charge / discharge relay control process will be described later with reference to Fig. 5. Next, in step S17, the control unit 11 initializes the display of a display (not shown) provided in the uninterruptible power supply 1, communicates with the battery management unit 13 (BMS communication), and controls the lighting of an LED provided in the uninterruptible power supply 1.

[0051] Next, in step S18, the control unit 11 resets the operation counter. Next, in step S19, the control unit 11 determines whether the system termination condition is satisfied. If the system termination condition is satisfied (step S19 YES), the control unit 11 ends the charging / discharging process. On the other hand, if the system termination condition is not satisfied (step S19 NO), the control unit 11 moves the process to step S12.

[0052] (Charge / Discharge Relay Control Process According to the First Embodiment) FIG. 5 is a flowchart showing an example of the charge / discharge relay control process (step S16 in FIG. 4) according to the first embodiment.

[0053] First, in step S16a, the control unit 11 detects an abnormality in the SoC of the battery 15, the battery voltage acquired in step S14, the charging unit voltage, etc., and determines whether it is necessary to perform an emergency stop of the uninterruptible power supply 1. If it is necessary to perform an emergency stop of the uninterruptible power supply 1 (step S16a YES), the control unit 11 transfers the process to step S16b. On the other hand, if it is not necessary to perform an emergency stop of the uninterruptible power supply 1 (step S16a NO), the control unit 11 transfers the process to step S16c.

[0054] In step S16b, the control unit 11 turns off all relays included in the connection switching unit 12. When step S16b ends, the control unit 11 ends the charge / discharge relay control process, and moves the process to step S17 (FIG. 4).

[0055] On the other hand, in step S16c, the control unit 11 determines whether there is an AC input, that is, an input of AC power from an external power source including a power grid. If there is an AC input (YES in step S16c), the control unit 11 proceeds to step S16d. On the other hand, if there is no AC input (NO in step S16c), the control unit 11 proceeds to step S16e.

[0056] In step S16d, control unit 11 turns on the bypass switch of inverter unit 12a of connection switching unit 12 (FIG. 2) to bypass the AC input and output it to electrical device 2 and financial terminal 3. After step S16d is completed, control unit 11 moves the process to step S16f.

[0057] On the other hand, in step S16e, control unit 11 turns off the bypass switch of inverter unit 12a of connection switching unit 12, and does not output AC input to electrical appliance 2 and financial terminal 3. After step S16e, control unit 11 moves the process to step S16g.

[0058] In step S16f, the control unit 11 controls the charging relay unit 12e to turn each relay ON or OFF. In step S16f, charging is started with priority given to the battery 15 with the smallest initial SoC among the chargeable batteries 15 housed in the housing unit 14 and connected to the battery management unit 13. A chargeable battery 15 is a battery 15 with SoC<99 (SoC=99 is a fully charged state) or without a BMS response.

[0059] In the case where there are multiple rechargeable batteries 15, when the SoC of the battery 15 being charged reaches a first predetermined value (e.g., 99) or becomes a predetermined difference (e.g., 20) or more with respect to the other batteries 15, the battery 15 to be charged is switched to the battery 15 with the smallest SoC. When the SoCs of all the batteries 15 reach the first predetermined value, there is "none" rechargeable battery 15, and charging is terminated. In step S16f, if there is "none" rechargeable battery 15 housed in the housing unit 14 and connected to the battery management unit 13, all relays are turned off and charging is not performed.

[0060] In the case where there is one rechargeable battery 15, charging is terminated when the SoC of the battery 15 being charged reaches a first predetermined value (eg, 99).

[0061] In step S16g, the control unit 11 controls the output relay unit 12f to turn each relay ON or OFF. In step S16g, among the dischargeable batteries 15 housed in the housing unit 14 and connected to the battery management unit 13, the battery 15 with the largest initial SoC is given priority for starting discharge. The dischargeable battery 15 is a battery 15 that is not being charged, has no AC input, or has SoC=99 (fully charged state).

[0062] In the case where there are multiple dischargeable batteries 15, the battery 15 to be discharged is switched to the battery 15 with the largest SoC when the SoC of the battery 15 being discharged reaches a second predetermined value (e.g., 0) or becomes a predetermined difference (e.g., 20) or more with respect to the other batteries 15. When the SoCs of all the batteries 15 reach the second predetermined value, there is "no battery 15" that can be discharged, and discharging is terminated.

[0063] In the case where there is one dischargeable battery 15, the discharging is terminated when the SoC of the battery 15 during discharging reaches a second predetermined value (for example, 99).

[0064] However, when there is only one battery 15 housed in the housing unit 14 and connected to the battery management unit 13, this single battery 15 is set as the discharge target regardless of whether it is being charged or not. In this case, when the SoC of the battery 15 reaches the second predetermined value, the discharge is terminated.

[0065] Next, in step S16h, the control unit 11 determines whether or not the battery 15 currently being charged is a target for quick charging based on any one of the “battery type,” “SoC,” and “quick charging setting” in the management table 11a (FIG. 3) corresponding to the battery 15.

[0066] Then, when any one of the "battery type", "SoC", and "rapid charging setting" of the battery 15 currently being charged corresponds to a battery that can be charged quickly, the control unit 11 controls the charging unit selection unit 12d to connect the rapid charging unit 12c to the corresponding battery 15 to charge the battery. The "SoC" corresponds to rapid charging when, for example, the SoC is a small value that is less than a certain value. On the other hand, when any one of the "battery type", "SoC", and "rapid charging setting" of the battery 15 currently being charged does not correspond to a battery that can be charged quickly, the control unit 11 controls the charging unit selection unit 12d to connect the normal charging unit 12b to the corresponding battery 15 to charge the battery.

[0067] In addition, whether or not the battery 15 currently being charged is a target for quick charging may be identified by hardware, for example, by using a loopback of the terminal connecting the battery 15 to the battery management unit 13, without relying on the management table 11a.

[0068] (Display in power system S according to embodiment 1) 6 is a diagram showing a display example in the power system S according to the first embodiment. The power system S may have a display screen 1D that outputs, from an output unit (not shown), the distance that a vehicle or an electric device that operates using the battery 15 as a power source can travel or the time that the vehicle or the electric device can operate with the amount of charge stored in the battery 15. The control unit 11 (FIG. 1) calculates and displays, as in the display screen 1D (FIG. 6), the operating time and the traveling distance of the vehicle or the electric device that operates using the battery 15 as a power source, based on the current SoC of the battery 15 that is accommodated in the accommodation unit 14 and connected to the battery management unit 13.

[0069] (Effects of the First Embodiment) In embodiment 1, the uninterruptible power supply 1 supplies external power to the financial terminal 3 while external power is being supplied, and when it detects that the supply of external power has been cut off, it supplies discharged power discharged from the battery 15 to the financial terminal 3.

[0070] In this way, the uninterruptible power supply 1 switches between the external power and the discharged power of the battery 15 depending on whether the supply of the external power is interrupted, and supplies the power to the financial terminal 3. Therefore, when the supply of the external power is interrupted, the battery 15 quickly supplies power instead of the external power, and it is possible to prevent the financial terminal 3, which is the target of the power backup, from being temporarily disabled.

[0071] In the first embodiment, charging and discharging of the battery 15 is controlled according to a charging and discharging profile according to the type of the battery 15 housed in the housing unit 14. Therefore, the battery 15 of any type or specification can be charged and used as a backup power source for the financial terminal 3.

[0072] In the first embodiment, the normal charging unit 12b or the quick charging unit 12c is selected as the charging unit that charges the battery 15 based on at least one of the type of the battery 15, the charge amount, or quick charging setting information indicating whether or not to perform quick charging. Therefore, it is possible to shorten the charging time and reduce the charging load on the battery 15 according to the type of the battery 15, the charge amount, or the quick charging setting information.

[0073] In the first embodiment, when the external power is insufficient for the amount of power required by the electric device 2 and the financial terminal 3, a supply path is configured by controlling the connection switching unit 12 to supply the discharged power of the battery 15 to the electric device 2 and the financial terminal 3 in addition to the external power. Therefore, when the power required by the commercial power source is exceeded, the uninterruptible power supply 1 can output power equal to or greater than the rated power of the commercial power source by combining the power output from the battery 15 and the commercial power source.

[0074] In the first embodiment, while external power is being supplied, the supply of external power to the electric device 2 is stopped, while the connection switching unit 12 is controlled to configure a supply path for supplying the discharged power discharged from the battery 15 to the electric device 2. Thus, by using a timer or the like to shift the power consumption peak of the electric device 2, which consumes a lot of power, to the nighttime when the electricity rate is cheaper, it is possible to reduce the electricity rate.

[0075] In addition, in embodiment 1, when the battery 15 of the uninterruptible power supply 1 as an emergency power source is being discharged, the locking mechanism 141 is controlled to restrict the attachment and detachment of the battery 15 to the storage section 14, thereby ensuring that the uninterruptible power supply 1 operates as an emergency power source.

[0076] Furthermore, in the first embodiment, even if the battery 15 of the uninterruptible power supply 1 as an emergency power source is being discharged, the lock mechanism 141 does not restrict attachment and detachment of the battery 15 with a predetermined charge level or more from the storage section 14. Therefore, a usable battery 15 can be removed from the uninterruptible power supply 1, allowing it to be used for its original purpose with priority.

[0077] In the first embodiment, the vehicle or electrically-powered device that operates using the battery 15 as a power source outputs the possible travel distance or possible operating time with the charge level of the battery 15. This can improve the convenience for the user of the vehicle or electrically-powered device that operates using the battery 15 as a power source.

[0078] [Embodiment 2] Fig. 7 is a diagram showing a configuration example of a power system 2S according to embodiment 2. The power system 2S differs from the power system S according to embodiment 1 in that a control unit 11 of an uninterruptible power supply 1 is connected to a management server 100 via a network N. A system including the uninterruptible power supply 1 and the management server 100 is referred to as an uninterruptible power supply system 1S.

[0079] The management server 100 is connected to a plurality of uninterruptible power supplies 1 via a network N. The management server 100 receives status information (SoC, SOH, current, battery voltage, charging unit voltage, temperature, and control state) of the battery 15 in the management table 11a from each uninterruptible power supply 1, and manages the information for each uninterruptible power supply 1.

[0080] The management server 100 performs part or all of the control that was performed by each control unit 11 of each uninterruptible power supply 1 in the first embodiment, on behalf of each control unit 11, based on the status information of each battery 15 of each uninterruptible power supply 1. The management server 100 can perform, for example, relay control of the connection switching unit 12 of each uninterruptible power supply 1, charge / discharge control of the battery 15, and control of the lock mechanism 141, on behalf of each control unit 11.

[0081] In the second embodiment, the management server 100 instructs the control unit 11 of the uninterruptible power supply 1 to control the uninterruptible power supply system 1S based on the status information received from the uninterruptible power supply 1. This makes it possible to centralize the management of the uninterruptible power supply 1, thereby improving management efficiency and reducing management costs.

[0082] [Embodiment 3] Fig. 8 is a diagram showing a configuration example of a power system 3S according to embodiment 3. In comparison with the power system S of embodiment 1, the power system 3S has a solar power generation device 300 that inputs AC power to the uninterruptible power supply 1 together with the power grid 200 via a power controller 301. The solar power generation device 300 is an example of a renewable energy power source. A fuel cell may be used in addition to or instead of the renewable energy power source.

[0083] In the third embodiment, similarly to the second embodiment, a management server 100 connected to the control unit 11 of the uninterruptible power supply 1 via a network N may be provided.

[0084] In the third embodiment, the connection switching unit 12 switches the supply path for supplying power to the electric device 2, the financial terminal 3, and the charging unit from one or more of the power grid, the renewable energy power source, and the fuel cell. This allows energy conservation and CO2 reduction by using a variety of power sources as external power sources without requiring large-scale renovation of existing facilities.

[0085] In the third embodiment, the uninterruptible power supply 1 is connected together with at least one of a renewable energy power source and a fuel cell under the control of a distribution board 4 that distributes power from the power system 200 via a distribution board. Therefore, the uninterruptible power supply 1 reduces the instability of the power supply of the renewable energy power source, which is dependent on the weather, and the renewable energy power source can be used stably.

[0086] [Embodiment 4] 9 is a diagram showing a configuration example of a power system 4S according to embodiment 4. In comparison with the power system S of embodiment 3, the power system 4S has an uninterruptible power supply 1 connected between a distribution board (not shown) that distributes power received from a power system 200 and a distribution board 4. A solar power generation device 300 inputs AC power to the uninterruptible power supply 1 together with the power system 200 via a power controller 301.

[0087] In the fourth embodiment, similarly to the second embodiment, a management server 100 connected to the control unit 11 of the uninterruptible power supply 1 via a network N may be provided.

[0088] In the fourth embodiment, the uninterruptible power supply 1 is connected between the power distribution board 4, which distributes power from the power system 200 through the power distribution board, together with at least one of a renewable energy power source and a fuel cell. This makes it possible to provide a power backup for the entire power system to which it is connected.

[0089] [Embodiment 5] 10 is a diagram showing an example of the configuration of a power system 5S according to embodiment 5. In the explanation of embodiment 5, differences from embodiments 1 to 4 will be mainly explained, and overlapping explanations will be omitted.

[0090] In comparison with the power systems S to 4S according to the first to fourth embodiments, the power system 5S further includes an uninterruptible power supply 1F having a battery management unit 13c and a battery 15c. For convenience, the battery management unit 13c and the battery 15c may be referred to as an "option battery" or an "OP battery." In this embodiment, the number of batteries 15c is one, but there may be more than one.

[0091] The battery management unit 13a, the storage unit 14a, and the battery 15a, and the battery management unit 13b, the storage unit 14b, and the battery 15b may be removed from the uninterruptible power supply 1F and mounted on a vehicle driven by an electric motor to be used as a power source for the vehicle. In contrast, the optional battery is not removed from the uninterruptible power supply 1F and functions as a fixed spare battery for the uninterruptible power supply 1F.

[0092] The power system 5S has a control unit 11F instead of the control unit 11 (FIG. 1, etc.). The control unit 11F further has a mode management table 11c and a mode schedule management table 11d.

[0093] (Configuration of mode management table 11c according to embodiment 5) 11 is a diagram showing an example of the configuration of a mode management table 11c according to embodiment 5. In the mode management table 11c, the control unit 11F defines and manages the control modes for charging and discharging the batteries 15a to 15c. The mode management table 11c has the following items: "Mode," "Function," "With AC input," and "During power outage."

[0094] "Mode" is identification information for each mode. "Function" indicates an overview of the control content of each mode. "Function" is optional. "AC input present" defines the control pattern for charging and discharging batteries 15a to 15c when there is AC input from power system 200 in each mode. Note that the illustration in FIG. 11 and the definition of the charge and discharge control pattern below are merely examples.

[0095] Mode 1 defines the default charge / discharge control of the batteries 15a to 15c. For example, when mode 1 is set in the uninterruptible power supply 1F, it is defined that "each battery 15a to 15c is charged by AC pass-through until the SoC (charging rate) reaches 100% when "AC input is present". The charging order is standby battery → discharge battery → OP battery." The standby battery and the discharge battery are two batteries 15a, 15b that are prioritized, and for example, the battery 15 that is set in the storage unit 14 first may be the standby battery, and the battery 15 that is set in the storage unit 14 later may be the discharge battery. Alternatively, the standby battery and the discharge battery may be determined according to the SoC, and the battery 15 with a higher SoC may be the standby battery, and the battery 15 with a lower SoC may be the discharge battery.

[0096] Also, for example, when mode 1 is set in the uninterruptible power supply 1F, it is defined that "during a power outage, the OP battery, the discharge battery, and the standby battery are charged in this order."

[0097] Mode 2 defines the control when the batteries 15a to 15c are used exclusively for discharging. For example, when mode 2 is set in the uninterruptible power supply 1F, it is defined that "when there is AC input, power is supplied from the power system 200 to the electrical equipment 2 and the financial terminal 3 by AC pass-through. The batteries 15a to 15c are not charged." Also, for example, when mode 2 is set in the uninterruptible power supply 1F, it is defined that "during a power outage, the batteries are charged in the following order: OP battery → discharge battery → standby battery."

[0098] Mode 3 defines peak shift control in which the batteries 15a to 15c charged late at night when the unit price of power is low are discharged during the day when the unit price of power is high. For example, when mode 3 is set in the uninterruptible power supply 1F, when there is "AC input", the order of discharge is OP battery → discharge battery → standby battery. However, when the SoC of each battery 15 drops to 20%, discharging is stopped. When the SoC of all batteries 15 drops to 20%, the system is switched to AC pass-through, and power is supplied from the power system 200 to the electric appliance 2 and the financial terminal 3 by AC pass-through. For example, when mode 3 is set in the uninterruptible power supply 1F, when there is "power outage", the order of discharge is OP battery → discharge battery → standby battery.

[0099] Mode 4 defines the control of battery deterioration prevention, which maintains the SoC of the batteries 15a to 15c within a predetermined range and prevents battery deterioration by suppressing frequent charging and discharging. For example, when mode 4 is set in the uninterruptible power supply 1F, when "AC input is present", each battery may naturally discharge and the SoC may drop, but it is defined that "the SoC is managed to be maintained between 20% and 100. If the SoC drops to 20%, it is charged to 100%. However, if the SoC exceeds 20% when not charging, charging is not performed and AC pass-through is selected." Also, for example, when mode 4 is set in the uninterruptible power supply 1F, it is defined that "when there is a power outage, the batteries are discharged in the order of OP battery → discharge battery → standby battery."

[0100] The various conditions (eg, items related to SoC 20%) of "AC input present" and "power outage" in the mode management table 11c can be changed as appropriate.

[0101] (Configuration of mode schedule management table 11d according to embodiment 5) 12 is a diagram showing an example of the configuration of a mode schedule management table 11d according to embodiment 5. The mode schedule management table 11d has items such as "current mode" and "schedule."

[0102] When any of the modes managed in the mode management table 11c of the uninterruptible power supply 1F is manually selected, the identification information of the selected mode is stored in the "current mode." When "NULL" is stored in the "current mode," the "current mode" is not manually selected, but a mode according to the schedule stored in the "schedule" is selected.

[0103] In the "schedule", identification information of the mode scheduled for each "time period" of each day of the week from "Sunday" to "Saturday" is stored. The uninterruptible power supply 1F operates in the mode stored in the mode schedule management table 11d. However, the uninterruptible power supply 1F operates in the default (mode 1) during a "time period" for which "NULL" is stored in the mode schedule management table 11d. In the example of FIG. 12, the uninterruptible power supply 1F is scheduled to operate in mode 3 during the time period 00-01 on Sunday, and in mode 2 during the time period 01-02. The uninterruptible power supply 1F operates in "NULL", i.e., the default (mode 1), during other time periods.

[0104] (Charge / Discharge Relay Control Process According to the Fifth Embodiment) Fig. 13 is a flowchart showing an example of a charge / discharge relay control process according to embodiment 5. The charge / discharge relay control process according to embodiment 5 is different from the charge / discharge relay control process according to embodiment 1 (Fig. 5) in that step S16c1 is executed instead of steps S16c to S16g, and is otherwise similar.

[0105] In step S16c1, the control unit 11F performs various controls according to the "current mode" read out from the mode schedule management table 11d or the mode scheduled for the current time slot. That is, the control unit 11F controls the ON / OFF of the AC pass-through of the bypass switch (inverter unit 12a), the charging relay unit 12e, and the output relay unit 12f. The ON / OFF of the AC pass-through of the inverter unit 12a, the control of the charging relay unit 12e, and the control of the output relay unit 12f performed by the control unit 11F in step S16c1 are as defined in the mode management table 11c. When step S16c1 ends, the control unit 11F moves the process to step S16h.

[0106] (Display example in power system 5S according to embodiment 5) 14A to 14C are diagrams showing examples of displays in a power system 5S according to embodiment 5. Fig. 14A to 14C show a display screen 5D1, a mode switching screen 5D2, a mode schedule input screen 5D3, and a mode switching button 5B of a display device (not shown) connected to an uninterruptible power supply 1F. A control unit 11F of the uninterruptible power supply 1F executes processing related to the displays in cooperation with the display device (not shown).

[0107] Display screen 5D1 shown in FIG. 14A displays "whether external power (AC) from power system 200 is IN", "SoC of B1 to B3 (batteries 15a to 15c)", and "current mode".

[0108] When the mode switching button 5B is pressed and held by the user while the display screen 5D1 is displayed, the screen transitions to the mode switching screen 5D2 shown in FIG. 14B. When the mode switching button 5B is pressed and held by the user while the mode switching screen 5D2 is displayed, the mode is manually switched to the input mode with priority over the schedule recorded in the mode schedule management table 11d. The mode manually set by operating the mode switching button 5B is stored in the "current mode" of the mode schedule management table 11d. Once a mode is set in the "current mode" of the mode schedule management table 11d, the mode stored in the "current mode" is maintained until it is manually released by operating the mode switching button 5B. When the currently stored manually set mode is released by operating the mode switching button 5B, "NULL" is stored in the "current mode".

[0109] When the mode switching button 5B is pressed and held by the user while the mode switching screen 5D2 is displayed, the screen transitions to a mode schedule input screen 5D3 shown in Fig. 14C. When the mode switching button 5B is pressed and held by the user while the mode schedule input screen 5D3 is displayed, the mode can be scheduled for each day of the week and time period. The scheduled modes are recorded in the mode schedule management table 11d.

[0110] According to the fifth embodiment, when it is detected that the supply of external power from power system 200 has been cut off, battery 15c is preferentially discharged over batteries 15a and 15b, and the discharged power is supplied to electric device 2 and financial terminal 3. Therefore, even if all batteries 15a and 15b that can be taken out have been taken out, battery 15c, which is an optional battery, can be used as a power source to supply power to electric device 2 and financial terminal 3.

[0111] According to the fifth embodiment, while the power system 200, which is an external power, is being supplied, the power system 200 is controlled to supply charging power to charge the portable batteries 15a, 15b and 15c in that order to a predetermined charging rate. Thus, by charging the batteries 15a and 15b with priority over the battery 15c, the batteries 15a and 15b can be brought into a portable SoC state more quickly, without impairing the convenience of the batteries 15a and 15b.

[0112] Furthermore, according to the fifth embodiment, by controlling switching between a plurality of modes from modes 1 to 4, the uninterruptible power supply 1F equipped with the battery 15c which is an optional battery can be operated in a detailed manner.

[0113] According to the fifth embodiment, multiple modes 1 to 4 are switched according to a schedule, and when a mode setting is accepted by a user operation, the accepted mode is set preferentially regardless of the schedule to control the uninterruptible power supply 1F. This allows the mode switching control to be performed systematically according to a schedule, and also allows the mode to be forcibly switched to deal with an emergency situation.

[0114] According to the fifth embodiment, the battery 15a, 15b with a lower SoC is preferentially discharged, and the battery with a higher SoC is preferentially charged. Therefore, by preserving one of the batteries 15a, 15b in a fully charged or nearly fully charged state as much as possible, the convenience of the batteries 15a, 15b that can be carried around can be prevented from being impaired.

[0115] The present invention is not limited to the above-described embodiment, and can be implemented using any components without departing from the scope of the present invention. The above-described embodiments and modifications are merely examples, and the present invention is not limited to these contents as long as the features of the invention are not impaired. In addition, although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other aspects conceivable within the scope of the technical idea of ​​the present invention are also included in the scope of the present invention.

[0116] For example, some of the functions provided in each device in the above-described embodiments may be provided in another device, and functions provided in another device may be provided in the same device.

[0117] Furthermore, the program configurations described in the above embodiments are merely examples. For example, a part of a program may be incorporated into another program, or multiple programs may be configured as a single program. [Explanation of symbols]

[0118] S, 2S, 3S, 4S, 5S: power system, 1: uninterruptible power supply, 1D: display screen, 2: electrical equipment, 3: financial terminal, 4: distribution board, 11: control unit, 11a: management table, 11b: relay control unit, 12: connection switching unit, 12a: inverter unit, 12b: normal charging unit, 12c: rapid charging unit, 12d: charging unit selection unit, 12e: charging relay unit, 12f: output relay unit, 13, 13a, 13b, 13c: battery management unit, 14, 14a, 14b: storage unit, 15, 15a, 15b, 15c: batteries, 100: management server, 141: locking mechanism, 200: power system, 300: solar power generation device, N: network.

Claims

1. An uninterruptible power supply that supplies power to a device, a storage section for detachably storing a plurality of secondary batteries capable of supplying power to the device; a charging section that charges the secondary battery accommodated in the accommodation section; a connection switching unit that switches between a supply path for supplying external power from an external power source to the device and the charging unit and a supply path for supplying discharge power from the secondary battery accommodated in the accommodation unit to the device; A control unit that controls the storage unit, the charging unit, and the connection switching unit, The control unit is a supply path for supplying the external power to the device while the external power is being supplied; When it is detected that the supply of the external power has been cut off, the connection switching unit is controlled to configure a supply path for supplying the discharged power discharged from the secondary battery to the device. An uninterruptible power supply device.

2. 2. The uninterruptible power supply according to claim 1, The control unit is A supply path for supplying the external power to the charging unit as charging power is configured by controlling the connection switching unit so that the secondary battery is charged while the external power is being supplied. An uninterruptible power supply device.

3. 2. The uninterruptible power supply according to claim 1, A charge / discharge profile for each type of the secondary battery is stored; The control unit is The charging and discharging of the secondary battery is controlled in accordance with the charging and discharging profile corresponding to the type of the secondary battery accommodated in the accommodation portion. An uninterruptible power supply device.

4. 2. The uninterruptible power supply according to claim 1, the charging unit includes a normal charging unit that charges the secondary battery at a first charging rate, and a rapid charging unit that charges the secondary battery at a second charging rate that is faster than the first charging rate; a management unit that manages the secondary battery accommodated in the accommodation unit; a charging unit selection unit that selects either the normal charging unit or the rapid charging unit as the charging unit that charges the secondary battery, The control unit is The normal charging unit or the rapid charging unit is selected as the charging unit that charges the secondary battery based on at least one of the type of the secondary battery, the charge amount, and rapid charging setting information indicating whether or not rapid charging is performed, which are managed by the management unit. An uninterruptible power supply device.

5. 2. The uninterruptible power supply according to claim 1, The control unit is When the external power is insufficient for the power required by the device, a supply path is configured by controlling the connection switching unit to supply the device with discharge power discharged from the secondary battery in addition to the external power. An uninterruptible power supply device.

6. 2. The uninterruptible power supply according to claim 1, the external power source includes at least one of a power grid, a renewable energy power source, and a fuel cell; The connection switching unit switches a supply path for supplying electric power to the device and the charging unit from one or more of the electric power grid, the renewable energy power source, and the fuel cell. An uninterruptible power supply device.

7. 7. An uninterruptible power supply according to claim 6, The uninterruptible power supply device is The renewable energy power source and / or the fuel cell are connected together under a distribution board that distributes power from the power system via a distribution board. An uninterruptible power supply device.

8. 7. An uninterruptible power supply according to claim 6, The uninterruptible power supply device is Between the power distribution boards that run from the power system through the power distribution boards and distribute power, the power distribution boards are connected together with at least one of the renewable energy power source and the fuel cell. An uninterruptible power supply device.

9. 2. The uninterruptible power supply according to claim 1, The control unit is While the external power is being supplied, the supply of the external power to the device is stopped, and a supply path for supplying the discharged power discharged from the secondary battery to the device is configured by controlling the connection switching unit. An uninterruptible power supply device.

10. 2. The uninterruptible power supply according to claim 1, the housing portion has a locking mechanism that restricts attachment / detachment of the secondary battery housed in the housing portion to / from the housing portion, The control unit is While the secondary battery is supplying discharge power to the device, the locking mechanism is controlled to restrict attachment and detachment of the secondary battery to the storage section. An uninterruptible power supply device.

11. 11. The uninterruptible power supply according to claim 10, a management unit that manages the secondary battery accommodated in the accommodation unit, The control unit is When the plurality of secondary batteries are supplying discharged power to the device, the locking mechanism does not restrict attachment and detachment of secondary batteries other than the secondary battery whose charge amount managed by the management unit is equal to or greater than a predetermined amount from the storage unit. An uninterruptible power supply device.

12. 2. The uninterruptible power supply according to claim 1, an output section that outputs a travel distance or an operating time of a vehicle or an electrically-powered device that operates using the secondary battery as a power source with respect to the secondary battery stored in the storage section, based on the amount of charge stored in the secondary battery; An uninterruptible power supply comprising:

13. 2. The uninterruptible power supply according to claim 1, a second secondary battery that is different from the plurality of secondary batteries accommodated in the accommodation portion; The charging unit charges the second secondary battery, the connection switching unit switches between a supply path through which the external power is supplied to the device and the charging unit and a supply path through which discharged power from the second secondary battery is supplied to the device; The control unit is When it is detected that the supply of the external power has been cut off, the connection switching unit is controlled to configure a supply path for supplying the device with discharge power discharged from the secondary battery and the second secondary battery, and the second secondary battery is preferentially discharged over the secondary battery to supply the discharged power to the device. An uninterruptible power supply device.

14. 14. An uninterruptible power supply according to claim 13, The control unit is A supply path for supplying the external power to the charging unit as charging power is configured by controlling the connection switching unit so that the secondary battery and the second secondary battery are charged to a predetermined charging rate in that order while the external power is being supplied. An uninterruptible power supply device.

15. 14. An uninterruptible power supply according to claim 13, The control unit is Managing a plurality of modes for controlling charging and discharging of the secondary battery and the second secondary battery; While the external power is being supplied, in a first mode among the plurality of modes, a supply path for supplying the external power to the charging unit as charging power is configured by controlling the connection switching unit so that the secondary battery and the second secondary battery are charged to a predetermined charging rate in that order, In a second mode of the plurality of modes, control is performed so that neither the secondary battery nor the second secondary battery is charged; in a third mode among the plurality of modes, the supply of the external power to the device is stopped, while the connection switching unit is controlled to configure a supply path for supplying discharge power discharged from the second secondary battery and the secondary battery in that order to the device; In a fourth mode among the plurality of modes, a supply path for supplying the external power to the charging unit as charging power and a supply path for supplying discharge power discharged from the secondary battery and the second secondary battery to the device are configured by controlling the connection switching unit so as to maintain the charging rates of the secondary battery and the second secondary battery within a predetermined range. An uninterruptible power supply device.

16. 16. An uninterruptible power supply according to claim 15, The control unit is managing switching among the first mode, the second mode, the third mode, and the fourth mode by a schedule, and setting any one of the first mode, the second mode, the third mode, and the fourth mode in accordance with the schedule to control the uninterruptible power supply; When a manual mode setting by a user operation is accepted, the accepted mode is preferentially set and the uninterruptible power supply is controlled regardless of the schedule. An uninterruptible power supply device.

17. 14. An uninterruptible power supply according to claim 13, The control unit is a supply path for supplying discharged power discharged from the plurality of secondary batteries to the device by controlling the connection switching unit, and when supplying the discharged power discharged from the plurality of secondary batteries to the device, a secondary battery having a lower charging rate among the plurality of secondary batteries is preferentially discharged to supply the discharged power to the device; A supply path for supplying the external power to the charging unit as charging power is configured by controlling the connection switching unit, and when charging the plurality of secondary batteries, control is performed so that a secondary battery having a higher charging rate is charged first among the plurality of secondary batteries. An uninterruptible power supply device.

18. An uninterruptible power supply according to any one of claims 1 to 17; a management server connected to the uninterruptible power supply via a network, The uninterruptible power supply device is acquiring at least one of status information of the secondary battery, such as a charge amount, a voltage, a current, a temperature, and a control state, and transmitting the information to the management server; The management server includes: Instructing the control unit to control the uninterruptible power supply based on the status information received from the uninterruptible power supply 2. An uninterruptible power supply system comprising:

19. A charge / discharge control method performed by an uninterruptible power supply that supplies power to a device, comprising: The uninterruptible power supply device is a storage section for detachably storing a plurality of secondary batteries capable of supplying power to the device; a charging section that charges the secondary battery accommodated in the accommodation section; a connection switching unit that switches between a supply path through which external power from an external power source is supplied to the device and the charging unit, and a supply path through which discharged power from the secondary battery accommodated in the accommodation unit is supplied to the device; A control unit that controls the storage unit, the charging unit, and the connection switching unit, The control unit: while the external power is being supplied, a supply path for supplying the external power to the device is configured by controlling the connection switching unit; When it is detected that the supply of the external power has been cut off, the connection switching unit is controlled to configure a supply path for supplying the discharged power discharged from the secondary battery to the device. A charge / discharge control method comprising each of the processes.

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