JP3174003U - Power supply that can replace the energy module without a power outage - Google Patents

Abstract

Provided is a power supply device capable of acquiring the timing for replacing a battery unit according to the state of a battery so that stable power can be supplied to a system that requires continuous operation.
The power supply apparatus includes an energy storage battery array including a plurality of electrically connected battery units a to h, a charge / discharge unit for charging or discharging each battery unit a to h, and a system. And a control unit 24 for acquiring the electrical state of the. The control unit 24 acquires the electrical state of the new battery unit 203 that has been replaced with the energy storage battery array, and uses the charging / discharging means or a passive standby method to electrically connect the new battery unit 203 and the entire system. A new battery unit 203 is operated at an appropriate time to match the characteristics.
[Selection] Figure 2

Description

  The present invention relates to a power supply device capable of exchanging energy modules without a power failure, and more particularly to a power supply device capable of acquiring a timing for replacing a battery unit according to a state of a battery.

  In an electronic system that requires continuous operation over a long period of time, it is a basic condition that electric power is continuously supplied. Therefore, in the prior art, a technology has been developed in which a battery can be directly replaced during system operation. As one of the prior arts, a description will be given with reference to FIG. 1 showing a schematic diagram of a power output structure of a power supply device that can directly replace a battery during operation by a current limit technique. In the power supply apparatus for supplying power shown in FIG. 1, the main equipment for storing energy is an energy storage device or energy storage system including a plurality of battery packs (105, 106, 107, 108). The plurality of battery packs (105, 106, 107, 108) are connected to each other by a circuit board (not shown), and supply power to the external device via the power output unit 101.

  Such a battery device particularly includes a current limiting unit 103. The current limiting unit 103 can control the current output to the power output unit 101. In a normal power supply state, the current limiting unit 103 performs control so that a stable current can be output, and when replacing a plurality of battery packs (105, 106, 107, 108) (for example, replacing battery packs) , Including operations such as taking out the battery pack and attaching the battery pack), and can control to output a stable current when replacing the battery pack. Never give.

  Since such an energy storage system is composed of a plurality of battery packs, when one of the battery packs is taken out and another battery pack is attached, the battery pack is replaced while the energy system is continuously operated. Therefore, a large inrush current and a surge current are generated in the energy system. The cause is that there is a predetermined difference between the electrical characteristics of the spare battery pack (for example, voltage, residual power, state of charge (SOC), etc.) and the electrical characteristics of the operating energy system. This is because there is an inrush current or surge current at the moment of contact between the spare battery pack and the energy system due to the difference, which may adversely affect the system and damage the system.

  Therefore, when one of the battery units is damaged during the operation of the system and the defective battery unit is replaced, such as an overvoltage or an overcurrent generated when the battery is replaced by a specific circuit means. Electrical protection means that can prevent the surge phenomenon are also being developed.

  Stable power can be supplied to systems that require continuous operation, new battery packs can be replaced at appropriate times, overcurrent and overvoltage can be effectively prevented, and damage caused by overcurrent and overvoltage caused by surge phenomenon It is an object of the present invention to provide a power supply device having an effect that can be prevented.

  In the prior art, when an abnormality occurs in one battery pack or some battery packs in the battery array and the battery pack in which the abnormality has occurred is replaced, the voltage and electrical characteristics of the new battery pack and the ongoing operation Large surge currents may occur due to differences in system voltage and electrical characteristics. In view of the above circumstances, in the present invention, when the battery pack is replaced by hardware means or firmware means, the residual power and the charged state are actively adjusted or passively detected. Provided is a power supply device capable of obtaining the timing of electrical connection and capable of exchanging energy modules without a power failure.

  The power supply apparatus of the present invention is provided in an energy storage battery array composed of a plurality of electrically connected battery units, a charge unit that charges the energy storage battery array or each of the battery units, and a discharge path. A discharge unit; a control unit for obtaining an electrical state of the energy storage battery array and the plurality of battery units and controlling the battery unit to be replaced during operation based on the electrical state; including.

  The electrical state may be the voltage, residual power, or state of charge of each battery unit and energy storage battery array. As illustrated in the embodiments described later, the energy storage battery array includes a main system control circuit for measuring an electrical state, and each battery unit is a sub-system control circuit for measuring the electrical state of each battery unit. Is provided. It should be noted that when replacing a plurality of battery units in the energy storage battery array, the battery units may be replaced one by one or the plurality of battery units may be replaced simultaneously.

  The discharging unit or the charging unit is electrically connected to the main system control circuit or the sub system control circuit via one or a plurality of switches. The control unit controls the timing of charging and discharging by directly controlling these switches based on the analysis result of the electrical state. For this reason, the battery unit exchanged at an appropriate timing can be electrically connected to the energy storage battery array.

  The control unit includes an energy storage battery array and an electrical state acquisition module for acquiring an electrical state of the plurality of battery units, and an electrical state of the energy storage battery array and one or more batteries to be replaced during operation. A comparison module for comparing the electrical state of the units, an electrical state control module for controlling the electrical state of one or more battery units to be replaced while the energy storage battery array is in operation, and the acquired electrical And a switching control module for controlling to turn on or off one or more battery units to be replaced during operation based on the state.

  According to the power supply device capable of exchanging energy modules without an uninterruptible power according to the present invention, when replacing the battery pack, an appropriate electrical connection timing is obtained based on the electrical parameters of the battery pack in the entire device. Can replace a new battery pack at an appropriate time, effectively preventing overcurrent and overvoltage, effectively preventing the occurrence of a surge phenomenon, and eventually causing damage caused by the overcurrent and overvoltage caused by the surge phenomenon. Can be prevented.

It is a schematic diagram of the power output structure of the power supply device which can replace | exchange the battery of a prior art directly. It is a schematic diagram of the power supply device which can replace | exchange an energy module without a power failure based on this invention. It is a schematic diagram of the Example of the power supply device which can replace | exchange an energy module by the uninterruptible power source concerning this invention. It is a schematic diagram of the charging / discharging circuit applied to the power supply device which can replace | exchange an energy module by the uninterruptible power source concerning this invention. It is a schematic diagram of the charging circuit applied to the power supply device which can replace | exchange an energy module without a power failure based on this invention. It is a 1st flowchart of the step which replaces | exchanges a battery during operation | movement in the Example of this invention. It is a 2nd flowchart of the step which replaces | exchanges a battery during operation | movement in the Example of this invention. It is a 3rd flowchart of the step which replaces | exchanges a battery during operation | movement in the Example of this invention.

  The power supply apparatus (hereinafter referred to as a power supply apparatus) capable of exchanging energy modules without a power failure according to the present invention is the whole main system or battery by firmware means or hardware means when replacing the battery unit in the operating power supply apparatus. By adjusting the electrical parameters of the unit and electrically connecting the battery unit to the main system at an appropriate timing, problems such as instability and damage due to the surge phenomenon that occur when connecting the battery unit and the main system are eliminated. Can be prevented.

  FIG. 2 is a schematic diagram of a power supply apparatus capable of exchanging energy modules without power failure according to the present invention. The power supply device capable of exchanging energy modules with no power failure shown in FIG. 2 is roughly divided into a main system 20 and a sub system. The battery unit is preferably a battery pack capable of being charged and storing energy. The main system 20 is a battery array in operation, and may include battery units a, b, c, d, e, f, g, and h that are serially and / or parallel to each other, and control circuits related thereto. . The sub system is a single battery unit, and refers to, for example, a battery unit that has been turned off, a battery unit that has been opened, or a new battery unit that has been replaced.

  An energy storage battery array including a plurality of electrically connected battery units a, b, c, d, e, f, g, and h has a main system control for measuring an electrical state of the energy storage battery array. A circuit 23 is provided. The main system control circuit 23 is electrically connected to the sub system control circuit 22 of each battery unit (herein referred to as a sub system), and transmits and receives control signals, and also includes electrical parameters (for example, Information such as voltage, residual power or / and state of charge) is obtained to measure the electrical state of the entire array.

  Each battery unit a, b, c, d, e, f, g, h (including a failed battery unit 201 and a new battery unit 203) is electrically connected to the main system control circuit 23 and each battery. A sub-system control circuit 22 for measuring the electrical state of the unit is included. With such a circuit arrangement, the control signal and the various electric parameters (electrical states) described above are transmitted and received. It should be noted that in the power supply device of the present invention, when replacing a plurality of battery units during operation of the power supply device, the battery units may be replaced one by one, or a plurality of battery units may be replaced at the same time. May be.

  An example will be described. What is indicated by a broken line is a faulty battery unit 201 in the energy storage battery array. In the prior art, if one or more battery units fail in an operating system, not only will the power supply efficiency of the entire system be affected, but if the entire power supply system is not temporarily stopped, It cannot be exchanged. Therefore, according to the need to replace the faulty battery unit and at the same time be able to operate the entire power supply system stably and continuously, the power supply device of the present invention replaces the main system 20 and the sub-system of each battery unit at the same time as replacing the battery unit. By determining the electrical state of the device and adjusting the electrical state actively or passively, appropriate electrical connection timing is obtained.

  In the present embodiment, the main system control circuit 23 acquires the electrical state of each battery unit from each sub-system control circuit 22, obtains the electrical state of the entire main system based on this electrical state, The defective battery unit can be turned off. The power supply device of the present invention further includes a control unit 24. The control unit 24 is electrically connected to the main system control circuit 23 and the sub system control circuit 22, and the energy storage battery array and the plurality of battery units are electrically connected from the main system control circuit 23 or each sub system control circuit 22. Get the status.

  After determining that the battery unit to be replaced (failed battery unit 201 shown in the figure) has been opened, the system is continuously operated, and at the same time, the battery unit 201 to be replaced (new battery unit 203 shown in the figure) is to be replaced. ). Based on the acquired electrical state of the main system 20 and the electrical state of the sub system in which the new battery unit 203 has been replaced, the control unit 24 performs the electrical connection between the main system 20 and the sub system in an active or passive manner. The timing at which the target states coincide with each other is acquired, and control is performed so that the electrical connection between the main system 20 and one or more battery units exchanged during operation at that timing is obtained.

  As shown in the embodiment, the sub system control circuit 22 of each battery unit is electrically connected to the main system control circuit 23 of the energy storage battery array via a plurality of connection pins. The plurality of connection pins have at least one set of signal pins for turning on / off a set of charge / discharge pins and a battery unit to be exchanged during operation.

  The control unit 24 charges and discharges the energy storage battery array or each battery unit of the energy storage battery array when operating so as to compare the electrical state such as the voltage, residual power, and charging state of the main system 20 and each sub system. Adjustment is performed by the charge / discharge unit for performing the above. The charge / discharge unit is electrically connected to the main system control circuit 23 or the sub system control circuit 22 through one or a plurality of switches.

  In the embodiment shown in FIG. 2, the charging / discharging unit is electrically connected to the control unit 24, and the energy storage battery array or each of the battery units (a, b, c, d, e, f, g, h) A discharge unit 28 for discharging may be included. As an implementation method of the discharge unit 28, a resistor in a discharge path electrically connected to each battery unit may be used. The discharge unit 28 adjusts the main system 20 whose voltage does not match with one or a plurality of battery units to be replaced during operation.

  Moreover, as shown in an Example, you may further include the charging unit 26 which charges with respect to an energy storage battery array or each battery unit of them. The power supply device of the present invention may include the charging unit 26 and the discharging unit 28 at the same time, or may include only one of the charging unit 26 and the discharging unit 28. In the present embodiment, the charging unit 26 is electrically connected to the control unit 24, and may charge the entire main system 20 or each sub-system based on a command from the control unit 24. . In addition, when a new battery unit is replaced, the charging unit 26 recharges the main system 20 and the new battery unit by charging the main system 20 or the replaced new battery unit so as to have a matching electrical state. Surge phenomenon when connecting various battery units can be prevented.

  In the present invention, the control unit 24 may be realized by hardware means or firmware means, or may be a plurality of circuit modules realized by hardware means or firmware means according to a desired function. As shown in the figure, the control unit 24 includes an electrical state acquisition module 241, an electrical state comparison module 242, an electrical state control module 243 and a switching control module 244.

  The electrical state acquisition module 241 is a circuit module for acquiring the electrical states of the energy storage battery array and the plurality of battery units in the control unit 24, and is electrically connected to the main system control circuit 23 and the sub system control circuit 22. Electrical values (or electrical parameters) measured by each control circuit are acquired by being connected.

  The electrical state includes the measured voltage. The voltage of the entire main system may be an average value obtained by summing and dividing the voltages of each sub system, or may be a numerical value calculated by another method. Further, the electrical state may be the residual power of each energy storage battery array (the total energy storage power is also the residual power of the main system 20), or may be a calculated charge state. In general, the state of charge is defined as a percentage of the system's energy, for example, it may be a percentage of the battery's current capacity and rated capacity, such as the current power stored by the battery that stores the energy. It may be the percentage of power that the battery can use.

  After acquiring the electrical status with the electrical status acquisition module 241, the electrical status comparison module 242 determines the electrical status of the energy storage battery array and the electrical status of one or more battery units to be replaced during operation. Compare The difference in the electrical state compared is caused by, for example, a surge phenomenon or other cause of trouble that occurs when a new battery unit is introduced. In order to improve or eliminate the difference, the electrical state control module 243 controls the electrical state of the energy storage battery array or one or more battery units to be replaced during operation, such as charge / discharge. Charging / discharging the main system 20 or each sub-system by the unit, observing fluctuations in the electrical state of the main system 20 or each sub-system, and operating a new battery unit at an appropriate timing, etc. including.

  In this embodiment, when the battery unit is replaced and a new battery unit 203 is inserted into the circuit of the energy storage battery array, the connection pin is once opened to prevent a surge phenomenon from occurring when the new battery unit 203 is inserted. Thus, the switching control module 244 in the control unit 24 generates a control signal based on the acquired electrical state, and is replaced by a battery unit (in this example, a new battery unit in this example) that is to be replaced during operation. 203) is controlled.

  FIG. 3: has shown the schematic diagram of the Example of the power supply device which can replace | exchange an energy module without a power failure based on this invention. FIG. 3 shows a battery array comprising a plurality of battery units 308 in series or / and in parallel. The sub-system control circuit of each battery unit 308 is electrically connected to a microcontroller unit (hereinafter referred to as MCU) 30 to realize the power supply device of the present invention. It should be noted that the power supply device of the present invention may include a plurality of loops. Each loop includes a plurality of battery units arranged in series and in parallel, and one or more of the battery units can be replaced during operation. The electrical parameters controlled by the power supply device of the present invention do not necessarily need to be adjusted so that the entire power supply device matches, and only one or a plurality of battery units to be replaced during operation in the same loop need be adjusted.

  Further, both ends of the battery array composed of a plurality of battery units 308 are electrically connected to the charge / discharge unit 311, respectively. The MCU 30 controls on / off of the circuit path between the charge / discharge unit 311 and the system via the charge / discharge switch 39, whereby the power supply device of the present invention charges the battery array by the charge / discharge unit 311 (here Including the discharge process when adjusting).

  In the embodiment, the MCU 30 obtains necessary parameters from the sub-system control circuit of each battery unit 308 and, as shown in the figure, includes a system including an electrical state such as a voltage, a residual power, or a charged state via a bus. A management signal 301 is acquired. The MCU 30 may include a current measurement circuit 303 for measuring a voltage value output from the entire apparatus. In this embodiment, the measurement is performed by a circuit connected to the resistor 305. When the entire power supply unit needs to be replaced with a new battery unit, the MCU 30 performs comparison and determination based on the acquired various electrical parameters, and when the electrical state between the main system and the sub system matches, The newly replaced battery unit is electrically connected to the main system. This completes the exchange process.

  Further, the power supply device includes a status display unit 32 for displaying that there is a battery unit to be replaced in the power supply device. For example, the administrator is informed that there is one or a plurality of battery units in which a malfunction occurs due to blinking of a lamp or a warning sound.

  Further, the power supply apparatus includes a control switch 34 for controlling the operation quantity of the plurality of battery units from the outside so as to have the convenience of operation. An administrator can determine some battery units that need to be activated in the entire battery array by means of the control switch 34.

  The power supply device also includes an external connection interface 38 for providing internal data to an external system. The administrator can obtain electrical parameters regarding the operation of the entire apparatus via the external connection interface 38. Further, the power supply device may include a power switch 36 for turning on and off the entire device.

  FIG. 4 shows a charge / discharge circuit applied to the power supply device. Each sub-system 401 (that is, each single battery unit) in the power supply apparatus is electrically connected to the charging unit 42 or the discharging unit 44 via the changeover switch 403. The control unit 40 in the power supply device performs switching control based on the acquired electrical state of the entire system and the electrical state of each sub system.

  An example will be described. In the normal state, when switching to the charging unit 42, the charging unit 42 charges the sub-system 401. When a new battery unit is replaced, charging to the sub system 401 may be switched according to desired charging / discharging needs. Further, when switching to the discharge unit 44, discharge is performed.

  FIG. 5 shows a schematic diagram of a charging circuit applied to the power supply device. In FIG. 5, the control unit 50 acquires the electrical state of each sub system by being electrically connected to different sub systems 501 and 503. The power supply device includes a charging unit 52 for being electrically connected to the sub systems 501 and 503 via different path switches 505 and 507, respectively. The control unit 50 is electrically connected to the path switches 505 and 507, and switches the switches based on the acquired electrical state of the main system and the electrical states of the sub systems 501 and 503.

  When the circuit design described above is applied, the operation of the power supply apparatus may employ an active method or a passive method.

(Passive method)
When replacing one or more battery units in a power supply, first turn off the power supply, replace the battery unit with a new battery unit, and then keep the control unit “passive” in the open circuit state. Wait until the electrical status of the entire power supply unit matches the electrical status of the replaced battery unit. Make it work.

  In the passive method, the control unit calculates the capacity of the main system and the sub system (new battery unit replaced), and determines the battery capacity of the main system (for example, the average value of each battery unit) and the new system. When the battery capacities of the battery units match, the power supply between the main system and the sub system is turned on by the path switch. Thereby, since generation | occurrence | production of a surge current can be prevented, the service life of a power supply device can be extended.

  FIG. 6 is a flowchart in the case where the residual power is used as a reference standard for the main electrical state. When it is determined that the battery unit in the power supply device needs to be replaced with a new battery unit (step S601), the control unit measures the current battery capacity of the main system and the sub system, and the sub system is “open”. When connected to the main system in a state, the battery capacity is measured by the signal pin (step S603).

  Subsequently, the control unit determines whether or not the battery capacities match (step S605). If the electrical statuses of the main system and the sub system do not match (N branch), the process returns to step S603, the residual power of the main system and sub system batteries is measured again, and data (or electrical) is measured by the control unit. Parameter). On the other hand, when the residual powers of the main system and the sub system match (Y branch), the process proceeds to step S607, and the control unit turns on the power supply between the sub system and the main system (for example, enables the charge / discharge pin). Thus, a new battery unit is electrically connected to the main system (step S609).

(Active method)
When replacing one or a plurality of battery units in the power supply device, the power supply of the battery unit to be replaced is turned off, a new battery unit is replaced, and then held in an open circuit state. Subsequently, the control unit drives the sub system and adjusts the electrical state of the sub system to “active” so as to coincide with the electrical state of the main system.

  As an adjustment method, an example will be described. For example, by depleting the voltage of a new battery unit replaced by a resistor (internal resistance or external resistance), the main system and the sub system (that is, the new battery replaced) After the voltages of the battery units including the unit match, the switch is turned on to electrically connect the sub system to the main system. As a result, a surge phenomenon (for example, surge current) due to non-uniform electrical state between battery packs can be prevented, so that damage to the power supply device can be prevented and the service life of the power supply device can be extended. .

  FIG. 7 shows a flowchart for replacing the battery during operation in the embodiment of the present invention. When it is determined that it is necessary to replace the battery unit in the power supply device with a new battery unit, the loop is opened and the battery unit to be replaced is replaced with a new battery unit (step S701). Before supplying power to the charge / discharge pin, the charge / discharge pin is in a disabled state. The control unit acquires the electrical state (for example, voltage) of the sub-system with the new battery unit replaced with the electrical state of the main system (step S703), and determines whether the two voltages match. (Step S705).

  If it is determined that the voltage of the sub-system with a new battery unit replaced with the main system does not match (N branch), leave the sub-system open to prevent the surge phenomenon caused by supplying power. Hold. In order to match the electrical state, as a method, the control unit may drive the charging unit to charge one of the main system and the sub system that has a lower voltage, or the main system and the sub system. One of the two having the higher voltage may be discharged (step S707).

  When it is determined that the voltages of the main system and the sub system match after performing charging / discharging (Y branch), the control unit enables a charge / discharge pin for turning on the sub system control circuit (step S709). The new battery unit is operated by electrically connecting the sub system to the main system (step S711).

  FIG. 8 shows a flowchart for comparing the charge states of the main system and the sub system. The process starts from step S801. When a new battery unit is installed in the power supply unit and the sub system is electrically connected to the main system, first, the sub system is held open, and the control unit calculates the charging status of the main system and the sub system. Then, information on the state of charge is acquired (step S803), and it is determined whether or not both states of charge match (step S805).

  When it is determined that the current charging state is inconsistent (N branch), charging or discharging is performed by the charging / discharging unit according to the setting of the power supply device (step S807), and at the same time, the charging state of the main system and the sub system is changed. calculate. When both charging states match (Y branch), the control unit electrically operates the new battery unit by electrically connecting the sub system to the main system (step S811).

  The power supply device according to the present invention is configured so that the battery unit to be replaced by the electrical characteristic measuring means and the electrical state of the battery unit in the same loop in the power supply device before replacing the battery unit and operating the new battery unit. Obtain information about the difference (including the battery unit voltage to be replaced and the battery unit voltage, residual power, and charge state in the power supply) and adjust its electrical state spontaneously or detect it passively Thus, the replaced battery unit is operated when the electrical state matches. Thereby, it is possible to prevent a surge or a troubled state due to a difference in electrical state.

  An example will be described. In the step of determining whether or not the electrical state of the main system and the sub system coincides with each other, a predetermined difference range is defined, and the electrical characteristics of the main system are based on the total or average of each battery unit. Also good. For example, if the difference in the state of charge is in the range of 3%, it may be determined that they match. If the difference between the main system and the sub system is in the range of 2% (or an appropriate range), it will match. Then, it may be determined, and if the difference in residual power between the main system and the sub system is in the range of 3.5% (or an appropriate range), it may be determined that they match. The above-described embodiments are merely preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention.

  As described above, according to the power supply device capable of exchanging energy modules without power failure according to the present invention, not only can the purpose of replacing the battery pack in the power supply device be achieved during operation, but also the electrical state of each system. By acquiring and determining the timing for turning on and off the power supply, it is possible to prevent the power supply apparatus from being damaged by a surge caused by electrically connecting the main system and the sub system having different electrical states.

a, b, c, d, e, f, g, h: Battery unit 22: Sub system control circuit 24: Control unit 201: Faulty battery unit 203: New battery unit 241: Electrical state acquisition module 242: Electricity State comparison module 243: electrical state control module 244: switching control module 23: main system control circuit 26: charging unit 28: discharging unit 32: state display unit 34: control switch 305: resistor 308: battery unit 311: charging / discharging Unit 40: Control unit 42: Charging unit 44: Discharging unit 50: Control unit 52: Charging unit

Claims (10)

It is a power supply unit that can replace the energy module without a power failure,
An energy storage battery array comprising a plurality of electrically connected battery units, comprising a main system control circuit for measuring an electrical state of the energy storage battery array, wherein each battery unit is the main system A sub-system control circuit that is electrically connected to the control circuit and measures an electrical state of each battery unit, and one or more of the battery units are operated during operation of the power supply device An energy storage battery array configured to allow replacement of battery units;
The energy storage battery array or each battery unit of the energy storage battery array is charged or discharged, and the main system control circuit or the sub system control circuit is electrically connected by one or a plurality of switches. Charging / discharging unit,
It is electrically connected to the main system control circuit and the sub system control circuit, acquires the electrical state of the energy storage battery array and the plurality of battery units, and is in operation based on the electrical state A control unit for controlling to turn on / off the battery unit to be replaced;
A power supply unit capable of exchanging energy modules without power failure.   2. The energy module can be replaced without a power failure according to claim 1, wherein the sub system control circuit of each battery unit is electrically connected to the main system control circuit via a plurality of connection pins. Power supply.   The plurality of connection pins include at least a set of charge / discharge control pins and a set of signal pins for controlling on / off of a battery unit to be replaced during operation. A power supply that can replace the energy module without a power outage.   The charge / discharge unit is electrically connected to the control unit and electrically connected to a discharge unit and / or the control unit for discharging the energy storage battery array or each of the battery units. The power supply device according to claim 1, further comprising a charging unit for charging the energy storage battery array or each of the battery units of the energy storage battery array. .   The power supply apparatus according to claim 4, wherein the discharge unit is a resistor in a discharge path electrically connected to each battery unit. The control unit is
An electrical state acquisition module for acquiring an electrical state of the energy storage battery array and an electrical state of the plurality of battery units;
An electrical state comparison module for comparing the electrical state of the energy storage battery array with the electrical state of the one or more battery units to be replaced during operation;
An electrical state control module for controlling the electrical state of the energy storage battery array and the electrical state of the one or more battery units to be replaced during operation;
A switching control module for controlling on / off of the one or more battery units to be replaced during operation based on the acquired electrical state;
The power supply apparatus according to claim 1 or 4, wherein the energy module can be replaced without an uninterruptible power.   The power supply apparatus according to claim 6, wherein the electrical state is a voltage, a residual power, or a charged state of each of the battery units and the energy storage battery array.   The power supply apparatus according to claim 1, further comprising a control switch for controlling an operation quantity of the plurality of battery units from the outside.   The power supply apparatus according to claim 1, further comprising a status display unit for displaying that there is a battery unit to be replaced in the power supply apparatus.   The uninterruptible energy module replacement according to claim 1, wherein the one or more battery units to be replaced during operation and the energy storage battery array whose electrical state is measured are in the same loop. Possible power supply.

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