Battery replacement system, battery replacement device, and method for managing the same

Abstract

According to embodiments disclosed herein, a battery replacement system may include a plurality of battery replacement devices that house replaceable batteries, and an integrated controller that manages the operation of the plurality of battery replacement devices, measures the insulation resistance of each of the plurality of battery replacement devices, and manages the use of the battery replacement devices based on the measured insulation resistance.

Description

[Technical Field]

[0001] This invention claims priority under Korean Patent Application No. 10-2023-0093816, filed on 19 July 2023, and all content disclosed in the said Korean Patent Application is incorporated herein by reference.

[0002] Embodiments disclosed herein relate to a battery replacement system, a battery replacement device, and a method for managing the same. [Background technology]

[0003] A battery swapping system stores, charges, and provides users with replacement batteries for electric mobility. The system includes a power source for charging batteries, a battery swapping device, and internal circuitry for charging, discharging, and managing the batteries.

[0004] Each battery replacement device within such a battery replacement system must maintain its insulation. If the insulation of a battery replacement device is broken and a short circuit occurs, serious safety problems may arise. [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] One object of the embodiments disclosed herein is to provide a battery replacement system, a battery replacement device, and a method for managing the same, which can manage the insulation state of the battery replacement device.

[0006] One object of the embodiments disclosed herein is to provide a battery replacement system, a battery replacement device, and a method for managing the same, which can manage and maintain the battery replacement system themselves.

[0007] The technical problems of the embodiments described herein are not limited to those mentioned above, and other technical problems not mentioned can be clearly understood by a person of the art ordinary in the field to which the present invention pertains from the following description. [Means for solving the problem]

[0008] According to embodiments disclosed herein, a battery replacement system may include a plurality of battery replacement devices for housing replaceable batteries, and an integrated controller for managing the operation of the plurality of battery replacement devices, measuring the insulation resistance of each of the plurality of battery replacement devices, and managing the use of the battery replacement devices based on the measured insulation resistance.

[0009] According to one embodiment, when a battery replacement request is input from a user, the integrated controller can check whether there is a battery replacement device among the plurality of battery replacement devices that does not contain a battery, measure the insulation resistance of the battery replacement device that does not contain a battery, and manage the use of the battery replacement device that does not contain a battery.

[0010] According to one embodiment, the integrated controller can measure the insulation resistance of each of the multiple battery replacement devices at predetermined first time intervals and determine whether or not maintenance is required for each battery replacement device.

[0011] According to one embodiment, the integrated controller can check whether any of the plurality of battery replacement devices are currently in use, interrupt the use of the battery replacement device that is currently in use, and measure the insulation resistance of each of the plurality of battery replacement devices.

[0012] According to one embodiment, each of the plurality of battery replacement devices may include a connecting section to which batteries are connected, a measuring section for measuring the insulation resistance of at least one of a first wire and a second wire connecting a power source for charging the batteries to the connecting section, and a controller for controlling the measuring section and determining the insulation state of at least one of the first wire and the second wire based on the measured insulation resistance.

[0013] According to one embodiment, the measuring unit may include a first insulation resistance measuring unit for measuring a first insulation resistance, which is the insulation resistance of the first wire, and a second insulation resistance measuring unit for measuring a second insulation resistance, which is the insulation resistance of the second wire.

[0014] According to one embodiment, the controller can control the first insulation resistance measuring unit and the second insulation resistance measuring unit, respectively, to measure at least one of the first insulation resistance and the second insulation resistance, determine the insulation state of the first wire based on the measured first insulation resistance value, and determine the insulation state of the second wire based on the measured second insulation resistance value.

[0015] According to one embodiment, the first insulation resistance measuring unit includes a first reference resistor connected between the first wire and the ground terminal, a first switch connected to the first reference resistor, and a second switch connected between the second wire and the ground terminal. The second insulation resistance measuring unit may include a second reference resistor connected in parallel with the second switch and connected between the second wire and the ground terminal, a third switch connected to the second reference resistor, and a fourth switch connected in parallel with the first reference resistor and connected between the first wire and the ground terminal.

[0016] According to one embodiment, the controller can measure the first insulation resistance by controlling the operation of the first switch, second switch, third switch, and fourth switch so that current flows through the first insulation resistance measuring unit but not through the second insulation resistance measuring unit, and can measure the second insulation resistance by controlling the operation of the first switch, second switch, third switch, and fourth switch so that current does not flow through the first insulation resistance measuring unit but current flows through the second insulation resistance measuring unit.

[0017] According to one embodiment, the controller can determine that the first wire is in a dielectric breakdown state if the measured first insulation resistance value is less than the first reference resistance value, and that the second wire is in a dielectric breakdown state if the measured second insulation resistance value is less than the second reference resistance value.

[0018] According to one embodiment, each of the plurality of battery replacement devices may further include a power switch for switching the electrical connection between the power source and the connecting part.

[0019] According to one embodiment, the controller can open the power switch before measuring the insulation resistance of at least one of the first and second wires.

[0020] According to one embodiment disclosed herein, a method for managing battery replacement devices may include the steps of measuring the insulation resistance of each of a plurality of battery replacement devices that house replaceable batteries, and managing the use of each of the plurality of battery replacement devices based on the measured insulation resistance.

[0021] According to an embodiment, the step of measuring the insulation resistance includes the step of receiving a battery replacement request from a user, the step of checking whether there is a battery replacement device in which no battery is accommodated among the plurality of battery replacement devices, and the step of measuring the insulation resistance of the battery replacement device in which no battery is accommodated. The step of managing the use of the battery replacement device may include the step of determining the insulation state of the battery replacement device in which no battery is accommodated based on the measured insulation resistance, and the step of determining whether the battery replacement device should be provided to the user based on the determined insulation state.

[0022] According to an embodiment, the step of measuring the insulation resistance includes the step of measuring the insulation resistance of each of the plurality of battery replacement devices at predetermined first time intervals. The step of managing the use of the battery replacement device may include the step of determining the insulation state of each battery replacement device based on the measured insulation resistance, and the step of determining whether maintenance of each battery replacement device is necessary based on the determined insulation state.

[0023] According to an embodiment, before the step of measuring the insulation resistance of each of the plurality of battery replacement devices, it may further include the step of checking whether there is a battery replacement device in use among the plurality of battery replacement devices, and the step of interrupting the use of the battery replacement device in use.

[0024] According to an embodiment disclosed herein, a battery replacement device may include a connection portion to which a battery is connected, a measuring unit that measures the insulation resistance of at least one of a first line and a second line that connect a power source for charging the battery and the connection portion, and a controller that controls the measuring unit and determines the insulation state of at least one of the first line and the second line based on the measured insulation resistance.

[0025] According to one embodiment, the measuring unit may include a first insulation resistance measuring unit for measuring a first insulation resistance, which is the insulation resistance of the first wire, and a second insulation resistance measuring unit for measuring a second insulation resistance, which is the insulation resistance of the second wire.

[0026] According to one embodiment, the battery replacement device may further include a power switch for switching the electrical connection between the power source and the connecting part. [Effects of the Invention]

[0027] The battery replacement system, battery replacement device, and management method thereof as disclosed herein can manage the insulation state of the battery replacement device.

[0028] The battery replacement system, battery replacement device, and management method thereof as disclosed herein allow for maintenance of the battery replacement system and enhance safety by managing the insulation state of the battery replacement device. [Brief explanation of the drawing]

[0029] [Figure 1] This is a battery replacement system according to one embodiment disclosed herein. [Figure 2] This is a block diagram showing a battery replacement device according to one embodiment disclosed herein. [Figure 3] This is a block diagram illustrating more specifically a battery replacement device according to one embodiment disclosed herein. [Figure 4] This is a circuit diagram showing a battery replacement device according to one embodiment disclosed herein. [Figure 5] This is a circuit diagram showing a battery replacement device according to another embodiment disclosed herein. [Figure 6] This is a flowchart illustrating the operation of a battery replacement system according to one embodiment disclosed herein. [Figure 7] This is a flowchart illustrating the operation of a battery replacement system according to another embodiment disclosed herein. [Figure 8] This is a block diagram showing the hardware configuration of a computing system for realizing a battery replacement system according to one embodiment disclosed herein. [Modes for carrying out the invention]

[0030] Various embodiments of the present invention are described below with reference to the accompanying drawings. However, it should be understood that this does not limit the present invention to any particular embodiment, but rather includes various modifications, equivalents, and / or alternatives to the embodiments of the present invention.

[0031] The various embodiments and terminology used herein should be understood not to limit the technical features described herein to any particular embodiment, but to include various modifications, equivalents, or substitutions of such embodiments. In relation to the description of the drawings, similar or related components are referred to by similar reference numerals. The singular form of a noun corresponding to an item may include one or more such items unless the context clearly indicates otherwise.

[0032] In this specification, each of the phrases “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C” may include any one of the items listed with the phrase in question, or any possible combination thereof. Terms such as “first,” “second,” “first,” “second,” “A,” “B,” “(a),” or “(b)” are used solely to distinguish one component from other components and, unless otherwise stated, do not limit the component in any other way (e.g., weight or order).

[0033] In this specification, when a component (e.g., the first) is referred to as being "coupled," "joined," or "connected" to another component (e.g., the second) with or without such terms, it means that the first component may be connected to the other component directly (e.g., by wire), wirelessly, or via the third component.

[0034] According to one embodiment, the methods of the various embodiments disclosed herein may be provided in a computer program product. A computer program product may be traded as a commodity between a seller and a buyer. A computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or online (e.g., by download or upload) via an application store or directly between two user devices. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily generated in a device-readable storage medium such as the memory of a manufacturer's server, an application store server, or an intermediary server.

[0035] According to various embodiments, each of the aforementioned components (e.g., a module or a program) may include one or more individuals, and some of the individuals may be separated and arranged in other components. According to various embodiments, one or more of the aforementioned components or operations may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (e.g., a module or a program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the components of the multiple components before the integration. According to various embodiments, operations performed by a module, program, or other component may be performed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be performed in a different order, omitted, or one or more other operations may be added.

[0036] Figure 1 shows a battery replacement system according to one embodiment disclosed herein.

[0037] Referring to Figure 1, the battery replacement system 1 may include a plurality of battery replacement devices 11-1, 11-2, ..., 11-n, a power supply 12, a control panel 13, an integrated controller 14, a power line 111, a ground line 112, and a communication line 113.

[0038] Each of the multiple battery swapping devices 11-1, 11-2, ..., 11-n can house a battery. According to the embodiment, the battery can be a replaceable type of battery. For example, a replaceable type of battery can be, but is not limited to, a battery used in a two-wheeled electric vehicle. Furthermore, a replaceable battery is a battery that can be replaced by a battery swapping system.

[0039] Power supply 12 can supply power to other components of the battery exchange system 1 (for example, the multiple battery exchange devices 11-1, 11-2, ..., 11-n, the control panel 13, and the integrated controller 14). Power supply 12 can supply power to each of the multiple battery exchange devices 11-1, 11-2, ..., 11-n simultaneously or individually in order to charge the batteries housed in each of them.

[0040] According to the embodiment, the power supply 12 can supply power to each of the multiple battery exchange devices 11-1, 11-2, ..., 11-n. According to the embodiment, the power supply 12 can receive power transmitted from an external power grid, power line, power storage facility, power plant, or substation outside the battery exchange system 1. The power supply 12 can convert AC power to DC power. Therefore, the power transmitted from the power supply 12 to each of the multiple battery exchange devices 11-1, 11-2, ..., 11-n can be DC power.

[0041] The control panel 13 can be provided for communication between the battery replacement system 1 and the user. According to one embodiment, the control panel 13 can be an input / output device that receives requests from the user and outputs information. According to one embodiment, the control panel 13 can be a device capable of both input and output (e.g., a touchscreen display). According to one embodiment, the control panel 13 may include an input device (e.g., a keyboard, card reader, scanner, camera, etc.) or an output device (e.g., a display, speaker, video card, audio card, printer, or other external device).

[0042] The integrated controller 14 can control multiple battery replacement devices 11-1, 11-2, ..., 11-n, the power supply 12, and the control panel 13. The integrated controller 14 can control the operation of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n and manage the use of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n.

[0043] According to the embodiment, the integrated controller 14 can manage the charging operation of each of the batteries in the plurality of battery replacement devices 11-1, 11-2, ..., 11-n. According to the embodiment, the integrated controller 14 can control each of the plurality of battery replacement devices 11-1, 11-2, ..., 11-n to start charging, and can control them to stop charging.

[0044] According to the embodiment, the integrated controller 14 can manage the insulation state of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n. To manage the insulation state, the integrated controller 14 can measure the insulation resistance of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n. The integrated controller 14 can also determine the insulation state of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n based on the measured insulation resistance. The integrated controller 14 can determine the insulation state as either a normal insulation state or a dielectric breakdown state.

[0045] According to the embodiment, the integrated controller 14 can manage the use of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n according to the insulation status of each of the determined battery replacement devices 11-1, 11-2, ..., 11-n. The integrated controller 14 can also determine whether maintenance is required for each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n according to their insulation status.

[0046] In addition to the above-disclosed information, the integrated controller 14 can control the overall operation of each of the battery exchange devices 11-1, 11-2, ..., 11-n. For example, the integrated controller 14 can open or close the doors of each of the battery exchange devices 11-1, 11-2, ..., 11-n.

[0047] Furthermore, the integrated controller 14 can communicate via wired or wireless connection with a server (not shown) or other control module located outside the battery replacement system 1.

[0048] According to the embodiment, the operation of the integrated controller 14 can be described as follows. When a battery insertion request is entered into the control panel 13 by the user, the integrated controller 14 can check whether there is a battery replacement device among the multiple battery replacement devices 11-1, 11-2, ..., 11-n that does not contain a battery. If a battery replacement device that does not contain a battery (e.g., 11-1, 11-2, and 11-3) is determined, the integrated controller 14 can determine the insulation state of the battery replacement devices 11-1, 11-2, and 11-3. The integrated controller 14 can select one or more battery replacement devices (e.g., 11-1 and 11-2) from among the battery replacement devices 11-1, 11-2, and 11-3 that do not contain a battery and are determined to be in a normal insulation state. For example, if the integrated controller 14 selects battery replacement device 11-1, the integrated controller 14 can open the door of battery replacement device 11-1. After the batteries are placed in the open slots of the battery exchange device 11-1, the integrated controller 14 can close the door of the battery exchange device 11-1 and charge the placed batteries.

[0049] As described above, the integrated controller 14 controls the operation of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n, and manages their use by measuring their insulation resistance. This allows the battery replacement system 1 to independently evaluate the safety of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n. Furthermore, by managing each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n, the battery replacement system 1 can be maintained, and user safety can be guaranteed.

[0050] According to the embodiment, the power line 111 and the ground line 112 are configured to transmit power from the power supply 12 to components within the battery replacement system 1 that consume power. For example, power from the power supply 12 can be transmitted via the power line 111 to a plurality of battery replacement devices 11-1, 11-2, ..., 11-n. The ground line 112 may be a reference line that generates a potential difference with the power line 111.

[0051] According to the embodiment, the power line 111 may have a different voltage from the ground line 112. For example, the voltage of the power line 111 may be higher than the voltage of the ground line 112. Also, the power line 111 and the ground line 112 in the battery replacement system 1 may not be grounded and may be floating. Therefore, the voltages of both the power line 111 and the ground line 112 may be different from the ground voltage of the power supply of the battery replacement system 1 (the chassis ground voltage of the battery replacement system 1).

[0052] The communication line 113 is configured to allow other components of the battery replacement system 1 to communicate. According to the embodiment, multiple battery replacement devices 11-1, 11-2, ..., 11-n and the control panel 13 can communicate with the integrated controller 14 via the communication line 113.

[0053] According to the embodiment, various control commands can be transmitted via the communication line 113. Control commands that can be transmitted via the communication line 113 may include user requests and electrical signals between internal components of the battery replacement system 1.

[0054] In the embodiment shown in Figure 1, the communication line 113 is exemplified as a wired communication line, but in other embodiments, the communication line 113 may be configured wirelessly.

[0055] The battery replacement device 11-1 will be described below with reference to Figures 2 and 3. For the sake of explanation, battery replacement device 11-1 will be described as an example among several battery replacement devices 11-1, 11-2, ..., 11-n, but the same explanation can be applied to the other battery replacement devices 11-2, ..., 11-n in substantially the same way.

[0056] Figure 2 is a block diagram showing a battery replacement device according to one embodiment disclosed herein.

[0057] Referring to Figure 2, the battery replacement device 11-1 may include a connecting unit 101, a power switch 102, a measuring unit 103, and a controller 104.

[0058] The connecting portion 101 can provide an electrical connection between the battery housed in the battery replacement device 11-1 and the power line 111 and / or the ground line 112. According to the embodiment, the connecting portion 101 may include one or more connecting terminals that contact the electrodes or leads of the battery. For example, the connecting terminals may include a first connecting terminal P1 and a second connecting terminal P2. According to the embodiment, the first connecting terminal P1 may be connected to the power line 111, and the second connecting terminal P2 may be connected to the ground line 112.

[0059] According to one embodiment, the connecting portion 101 can sense whether or not a battery is housed in the battery replacement device 11-1. According to another embodiment, the connecting portion 101 may include a sensor (not shown) that detects whether or not a battery is connected to the connecting portion. According to another embodiment, the connecting portion 101 may be configured in the form of a slot for housing a battery, but is not limited thereto.

[0060] The power switch 102 can switch the electrical connection between the power supply 12 of the battery replacement system 1 and the battery housed in the battery replacement device 11-1. According to the embodiment, the power switch 102 can switch the transmission of power between the connection part 101 and the power supply 12. According to the embodiment, the power switch 102 can be located on the power line 111, but is not limited thereto.

[0061] The measuring unit 103 can measure the insulation resistance of the battery replacement device 11-1. According to the embodiment, the measuring unit 103 can measure the insulation resistance of the wires of the battery replacement system 1 that connect the connecting unit 101 and the power supply 12. According to the embodiment, the measuring unit 103 can measure the insulation resistance of at least one of the power supply wire 111 and the ground wire 112.

[0062] According to one embodiment, the measuring unit 103 may include at least a portion of the power line 111 and the ground line 112. The measuring unit 103 will be described below with reference to Figures 3 and 4.

[0063] The controller 104 can control the operation of the battery replacement device 11-1. According to this embodiment, the controller 104 can control the operation of the coupling unit 101, the power switch 102, and the measuring unit 103.

[0064] According to the embodiment, the controller 104 can control the battery replacement device 11-1 based on information obtained from the coupling unit 101. According to the embodiment, the controller 104 can control the measuring unit 103 to measure the insulation resistance of the battery replacement device 11-1. The controller 104 can control the power switch 102 and the measuring unit 103 to measure the insulation resistance of at least one of the power line 111 and the ground line 112. According to the embodiment, the controller 104 can control the power switch 102 to be opened before measuring the insulation resistance. The measurement of insulation resistance will be described below with reference to Figures 3 and 4.

[0065] The controller 104 can determine the insulation state of the battery replacement device 11-1 based on the insulation resistance measured by the measurement unit 103. For example, the controller 104 can determine the insulation state of the power line 111 and / or the ground line 112 based on the measured insulation resistance of the power line 111 and / or the ground line 112. This allows the controller 104 to manage the state of the battery replacement device 11-1.

[0066] According to the embodiment, if the controller 104 determines that the power line 111 is in a state of dielectric breakdown, it can request maintenance of the battery replacement device 11-1 from a higher-level controller (e.g., integrated controller 14). According to the embodiment, if the controller 104 determines that either the power line 111 or the ground line 112 is in a state of dielectric breakdown, it can request maintenance of the battery replacement device 11-1 from a higher-level controller (e.g., integrated controller 14). Therefore, the controller 104 can measure the insulation resistance of the power line 111 or the ground line 112 and manage the battery replacement device 11-1.

[0067] The controller 104 can transmit the determined insulation status of the battery replacement device 11-1 to the integrated controller 14. Based on the insulation status of the battery replacement device 11-1 transmitted from the controller 104, the integrated controller 14 can determine whether or not the battery replacement device 11-1 can be used for battery replacement. In addition, the integrated controller 14 can determine whether or not maintenance of the battery replacement device 11-1 is required, depending on the insulation status of the battery replacement device 11-1.

[0068] The controller 104 and the integrated controller 14 enable the battery replacement system 1 to independently evaluate the safety of the battery replacement device 11-1. Furthermore, the battery replacement system 1 can ensure the safety of the user of the battery replacement device 11-1 and efficiently maintain the battery replacement device 11-1.

[0069] The controller 104 can be connected wirelessly or wired to components within the battery replacement system 1. The controller 104 can be connected to the integrated controller 14, the coupling unit 101, the power switch 102, and the measuring unit 103 via the communication line 113.

[0070] Figure 3 is a block diagram illustrating more specifically a battery replacement device according to one embodiment disclosed herein.

[0071] Referring to Figure 3, the voltage / current measuring unit 121 can apply a voltage or current to the battery replacement device 11-1 in order to measure its insulation resistance. Furthermore, the voltage / current measuring unit 121 can measure the current flowing through the battery replacement device 11-1 or the voltage across the battery replacement device 11-1 based on the applied voltage or current. Therefore, the voltage / current measuring unit 121 can calculate the insulation resistance of the battery replacement device 11-1 based on the measured voltage or current.

[0072] According to the embodiment, the voltage / current measuring unit 121 can measure the AC current flowing through the battery replacement device 11-1 or the AC voltage of the battery replacement device 11-1 based on the AC voltage or AC current applied to the battery replacement device 11-1. Based on the measured AC voltage or AC current, the voltage / current measuring unit 121 can calculate the impedance of the battery replacement device 11-1.

[0073] According to the embodiment, the voltage / current measurement unit 121 may include an electrochemical impedance spectroscopy measurement system (EIS Measurement System). The EIS measurement system can generate a profile showing the resistance of the battery replacement device 11-1 in terms of the correspondence between its real and imaginary parts at each frequency, and calculate the impedance. For example, the voltage / current measurement unit 121 may include an EIS board. The EIS board may include internal circuitry that calculates the impedance based on the measured AC voltage or AC current.

[0074] The voltage / current measuring unit 121 can measure the first insulation resistance using the first insulation resistance measuring unit 122. According to the embodiment, the first insulation resistance may be the insulation resistance of the wire connecting the power supply 12 and the connecting unit 101. The first insulation resistance may be the insulation resistance of the power supply line 111. Therefore, the first insulation resistance can be calculated based on the voltage or current of the first insulation resistance measuring unit 122 measured by the voltage / current measuring unit 121.

[0075] The voltage / current measuring unit 121 can measure the second insulation resistance using the second insulation resistance measuring unit 123. According to the embodiment, the second insulation resistance may be the insulation resistance of other wires connecting the power supply 12 and the coupling unit 101. The second insulation resistance may be the insulation resistance of the ground wire 112. Therefore, the second insulation resistance can be calculated based on the voltage or current of the second insulation resistance measuring unit 123 measured by the voltage / current measuring unit 121.

[0076] Figure 4 is a circuit diagram showing a battery replacement device according to one embodiment disclosed herein.

[0077] Referring to Figure 4, the power switch 102 may include a switch S0 for switching the electrical connection between the power supply 12 and the battery housed in the battery replacement device 11-1. According to the embodiment, the switch S0 may be located on the power line 111. For example, the switch S0 may be, but is not limited to, a relay or at least one FET. According to the embodiment, the switch S0 may be controlled by a controller 104.

[0078] The controller 104 can open the power switch 102 before measuring the insulation resistance of the battery replacement device 11-1. By opening the switch S0 by the controller 104, the electrical connection between the power supply 12 and the connecting part 101 can be interrupted. In other words, by opening the power switch S0 before measuring the insulation resistance, the power supplied from the power supply 12 to the connecting part 101 can be interrupted. Therefore, the battery can be electrically isolated from the measuring part 103 before measuring the insulation resistance. This allows for accurate measurement of the insulation resistance of the battery replacement device 11-1. Furthermore, even when the battery is connected to the connecting part 101, the electrical connection can be interrupted by opening the power switch S0, so the insulation resistance can be measured simply by controlling the power switch 102 without physically removing the battery. This allows for evaluation of the safety of the battery replacement device 11-1 and enables efficient maintenance of the battery replacement device 11-1.

[0079] The power line 111 can be positioned between the voltage / current measuring unit 121 and the first connecting terminal P1 of the connecting unit 101. According to this embodiment, the power line 111 can be electrically connected to the first pole of the battery.

[0080] The ground wire 112 can be positioned between the voltage / current measuring unit 121 and the second connecting terminal P2 of the connecting unit 101. According to this embodiment, the ground wire 112 can be electrically connected to the second pole of the battery.

[0081] According to the embodiment, the power line 111 and the ground line 112 may have different voltages from each other. Also according to the embodiment, both the power line 111 and the ground line 112 may have voltages different from the ground voltage of the power supply of the battery replacement system 1 (the chassis ground voltage of the battery replacement system 1).

[0082] The voltage / current measuring unit 121 can measure the insulation resistance of the wires of the battery replacement device 11-1.

[0083] According to the embodiment, the first insulation resistance measuring unit 122 may include a first reference resistor R1 connected between the power line 111 and the ground terminal, a first switch S1 connected to the first reference resistor R1, and a second switch S2 connected between the ground line 112 and the ground terminal. The ground terminal may be the same as the ground voltage of the power supply of the battery replacement system 1 (the chassis ground voltage of the battery replacement system 1).

[0084] The first switch S1 and the second switch S2 can switch the current flowing through the first insulation resistance measuring unit 122. For example, the first switch S1 and the second switch S2 can be at least one of a relay or an FET. The first switch S1 and the second switch S2 can be controlled by a controller 104 (see Figure 2).

[0085] The first reference resistor R1 can be a reference insulation resistance for determining the insulation state of the power line 111 of the battery replacement device 11-1. According to the embodiment, when the power line 111 is in a normal insulation state, the first insulation resistance value measured by the first insulation resistance measuring unit 122 can be the same as or within the same range as the value of the first reference resistor R1. The value of the first reference resistor R1 is n*10 3 From Ω (kΩ) to n*10 6 The value can be between Ω (MΩ) (where n is a number between 1 and 1000), but is not limited to this.

[0086] According to the embodiment, if the insulation of the power line 111 is broken, the insulation resistance value of the power line 111 is determined by the first reference resistor R1 and a resistor (R) having a value smaller than the first reference resistor R1. x (not shown) can be measured as if connected in parallel. In this case, the resistance (R x The value of the resistor (R) can be less than the value of the first reference resistor R1. x The value of ) is nΩ to n*10 3The value can be between Ω (kΩ) (where n is a number between 1 and 1000), but is not limited to this. According to one embodiment, if the power line 111 is in a dielectric breakdown state, the measured first insulation resistance value can be less than or equal to half the value of the first reference resistance R1.

[0087] The voltage / current measuring unit 121 can measure the second insulation resistance using the second insulation resistance measuring unit 123. According to the embodiment, the second insulation resistance measuring unit 123 may include a second reference resistor R2 connected between the ground line 112 and the ground terminal, a third switch S3 connected to the second reference resistor R2, and a fourth switch S4 connected between the power line 111 and the ground terminal. The ground terminal may be the same as the ground voltage of the power supply of the battery replacement system 1 (the chassis ground voltage of the battery replacement system 1).

[0088] The third switch S3 and the fourth switch S4 can switch the current flowing through the second insulation resistance measuring unit 123. For example, the third switch S3 and the fourth switch S4 can be at least one of a relay or an FET. The third switch S3 and the fourth switch S4 can be controlled by the controller 104 (see Figure 2).

[0089] The second reference resistor R2 can be a reference insulation resistance for determining the insulation state of the ground wire 112 of the battery replacement device 11-1. According to the embodiment, when the ground wire 112 is in a normal insulation state, the second insulation resistance value measured by the second insulation resistance measuring unit 123 can be the same as or within the same range as the value of the second reference resistor R2. The value of the second reference resistor R2 is n*10 3 From Ω (kΩ) to n*10 6 The value can be between Ω (MΩ) (where n is a number between 1 and 1000), but is not limited to this.

[0090] According to the embodiment, if the insulation of the ground wire 112 is broken, the insulation resistance value of the ground wire 112 is equal to the second reference resistance R2, and a resistor (R) having a value smaller than the second reference resistance R2 is added.y (not shown) can be measured as being connected in parallel. In this case, the value of the resistance (R y ) can be smaller than the value of the second reference resistance R2. The value of the resistance (R y ) can be a value between nΩ and n * 10 3 Ω (kΩ) (n is a number between 1 and 1000), but is not limited thereto. According to an embodiment, when the ground line 112 is in a breakdown state, the measured second insulation resistance value can be less than or equal to half of the value of the second reference resistance R2.

[0091] In the embodiment of FIG. 4, four SPST (Single Pole Single Through) switches (i.e., the first to fourth switches S1, S2, S3, and S4) are illustrated for switching the current flowing through the first insulation resistance measurement unit 122 and the second insulation resistance measurement unit 123. However, the embodiment of the present invention is not limited to the embodiment of FIG. 4. According to other embodiments, the type, structure, or number of switches (or relays or FETs), etc. can be changed by ordinary creative ability. In this regard, an alternative switch embodiment will be described with reference to FIG. 5 below.

[0092] Continuing to refer to the embodiment of FIG. 4, the voltage / current measurement unit 121 can apply a current and measure the insulation resistance of the first insulation resistance measurement unit 122 or the second insulation resistance measurement unit 123. According to an embodiment, the voltage / current measurement unit 121 can measure the insulation resistance by the first insulation resistance measurement unit 122 or the second insulation resistance measurement unit 123 according to the control of the controller 104. For example, the controller 104 can control so that current flows only through the first insulation resistance measurement unit 122 including the first reference resistance R1 and no current flows through the second insulation resistance measurement unit 123 including the second reference resistance R2.

[0093] The controller 104 can measure the first insulation resistance based on the current flowing through the first insulation resistance measurement unit 122. In this case, no current flows through the second insulation resistance measurement unit​​ The controller 104 can control the operation of the first switch S1, the second switch S2, the third switch S3, and the fourth switch S4 so that current flows only through the first insulation resistance measuring unit 122. Specifically, the controller 104 can control the first to fourth switches S1 to S4 so that the first switch S1 and the second switch S2 are short-circuited and the third switch S3 and the fourth switch S4 are open. In this case, a closed circuit (closed loop) can be formed including the voltage / current measuring unit 121, the power line 111, the first insulation resistance measuring unit 122, and the ground line 112. Subsequently, the voltage / current measuring unit 121 can apply current to the insulation resistance measuring unit. In this case, current flows through the closed circuit including the first insulation resistance measuring unit 122, but no current flows through the second insulation resistance measuring unit 123. The voltage / current measuring unit 121 can measure the current that has passed through the first insulation resistance measuring unit 122, or the voltage across the first insulation resistance measuring unit 122. The voltage / current measuring unit 121 can measure the first insulation resistance, which is the insulation resistance of the power line 111, based on the current or voltage measured by the first insulation resistance measuring unit 122.

[0095] According to one embodiment, if the voltage / current measurement unit 121 includes an electrochemical impedance spectroscopy measurement system (EIS Measurement System), the voltage / current measurement unit 121 can measure the impedance of the first insulation resistance measurement unit 122.

[0096] The controller 104 can determine the insulation state of the power line 111 based on the first insulation resistance (or impedance) value measured by the first insulation resistance measurement unit 122. The controller 104 can compare the first insulation resistance value measured by the first insulation resistance measurement unit 122 with the value of the first reference resistance R1 of the power line 111 and determine whether the power line 111 is in a normal insulation state or in an dielectric breakdown state.

[0097] If the measured first insulation resistance value is greater than or equal to the value of the first reference resistance R1, the controller 104 can determine that the power line 111 is in a normal insulation state. If the measured first insulation resistance value is less than the value of the first reference resistance R1, the controller 104 can determine that the power line 111 is in a breakdown state.

[0098] As described above, if the insulation of the power line 111 is broken, a resistor smaller in magnitude than the first reference resistor R1 (R x The first insulation resistance can be measured as if the following were connected in parallel. This allows a first insulation resistance having a value smaller than the first reference resistance R1 to be measured when measuring the insulation resistance of the power line 111 whose insulation has been destroyed.

[0099] If the power line 111 is in a state of dielectric breakdown, maintenance of the battery replacement device 11-1 may be required. Even if the power line 111 is in a normal state of insulation, if the ground line 112 is in a state of dielectric breakdown, maintenance of the battery replacement device 11-1 may be required. Therefore, the controller 104 can measure both the insulation resistance of the power line 111 and the insulation resistance of the ground line 112 for the safe use of the battery replacement device 11-1.

[0100] The insulation resistance of the ground wire 112, i.e., the second insulation resistance, can be measured using a method similar to that used to measure the insulation resistance of the power line 111 described above.

[0101] According to the embodiment, the controller 104 can control the current to flow only through the second insulation resistance measurement unit 123, which includes the second reference resistor R2, and not through the first insulation resistance measurement unit 122, which includes the first reference resistor R1. The controller 104 can control the current to flow only through the second insulation resistance measurement unit 123 by controlling the operation of the first switch S1, the second switch S2, the third switch S3, and the fourth switch S4.

[0102] Specifically, the controller 104 can control the first to fourth switches S1 to S4 such that the third switch S3 and the fourth switch S4 are short-circuited and the first switch S1 and the second switch S2 are open. In this case, a closed circuit (closed loop) can be formed including the voltage / current measuring unit 121, the power line 111, the second insulation resistance measuring unit 123, and the ground line 112. Subsequently, the voltage / current measuring unit 121 can apply current to the insulation resistance measuring unit. In this case, current flows through the closed circuit including the second insulation resistance measuring unit 123, but no current flows through the first insulation resistance measuring unit 122. The voltage / current measuring unit 121 can measure the current that has passed through the second insulation resistance measuring unit 123, or the voltage across the second insulation resistance measuring unit 123. Based on the current or voltage measured in the second insulation resistance measuring unit 123, the voltage / current measuring unit 121 can measure the second insulation resistance, which is the insulation resistance of the ground line 112.

[0103] According to one embodiment, if the voltage / current measurement unit 121 includes an electrochemical impedance spectroscopy measurement system (EIS Measurement System), the voltage / current measurement unit 121 can measure the impedance of the second insulation resistance measurement unit 123.

[0104] The controller 104 can determine the insulation state of the ground wire 112 based on the second insulation resistance (or impedance) value measured by the second insulation resistance measurement unit 123. The controller 104 can compare the second insulation resistance value measured by the second insulation resistance measurement unit 123 with the value of the second reference resistance R2 of the ground wire 112 to determine whether the ground wire 112 is in a normal insulation state or in a dielectric breakdown state.

[0105] If the measured second insulation resistance value is greater than or equal to the value of the second reference resistance R2, the controller 104 can determine that the ground wire 112 is in a normal insulation state. If the measured second insulation resistance value is less than the value of the second reference resistance R2, the controller 104 can determine that the ground wire 112 is in a breakdown state.

[0106] As described above, if the insulation of the ground wire 112 is broken, a resistor smaller than the second reference resistor R2 will be introduced into the ground wire 112 (R y The second insulation resistance can be measured as if the two resistors were connected in parallel. Therefore, when measuring the insulation resistance of the ground wire 112 whose insulation has been destroyed, a second insulation resistance having a value smaller than the second reference resistance R2 can be measured.

[0107] If the ground wire 112 is in a state of dielectric breakdown, maintenance of the battery replacement device 11-1 may be required. Even if the ground wire 112 is in a normal state of insulation, if the power supply wire 111 is in a state of dielectric breakdown, maintenance of the battery replacement device 11-1 may be required.

[0108] As described above, if the insulation of either the power line 111 or the ground line 112 is damaged, high current or high voltage may cause problems with the charging and discharging of the battery. Furthermore, the battery replacement system 1 may be damaged. Therefore, it is important to measure and manage the insulation resistance of the battery replacement system 1 for maintenance purposes or for the safety of its users.

[0109] Furthermore, according to an embodiment of the present invention, the controller 104 controls the switching of switch S0 and the first to fourth switches S1, S2, S3, and S4, thereby enabling the measurement of the insulation resistance of the power line 111 and the insulation resistance of the ground line 112, respectively. Therefore, even while operating the battery replacement system 1, the insulation resistance of the battery replacement device 11-1 can be easily measured and maintained without external operation.

[0110] Figure 5 is a circuit diagram showing a battery replacement device according to another embodiment disclosed herein.

[0111] Referring to Figure 5, a fifth switch S5 and a sixth switch S6 are shown as alternative embodiments of the first to fourth switches S1, S2, S3, and S4. The fifth switch S5 and the sixth switch S6 can switch the current flowing to the first insulation resistance measuring unit 122 and the second insulation resistance measuring unit 123. According to the embodiment, the fifth switch S5 and the sixth switch S6 can be SPDT (Single Pole Double Through) type switches.

[0112] Figure 6 is a flowchart illustrating the operation of a battery replacement system according to one embodiment disclosed herein. Figure 6 can be interpreted with reference to Figures 1 to 5.

[0113] Referring to Figure 6, in operation S101, the battery replacement system 1 can receive a battery replacement request input from the user. The battery replacement system 1 can receive battery replacement requests input via the control panel 13. In addition, the battery replacement system 1 can receive battery replacement requests transmitted via the server via the integrated controller 14. The integrated controller 14 can receive battery replacement requests from the user via wired or wireless connection.

[0114] Next, in operation S102, the battery replacement system 1 can check whether there is a battery replacement device among the multiple battery replacement devices 11-1, 11-2, ..., 11-n that does not contain a battery. The integrated controller 14 can check whether a battery is connected to the coupling part 101. The integrated controller 14 can determine that a battery replacement device that does not contain or occupy a battery (for example, 11-1) is a battery replacement device that does not contain a battery.

[0115] Next, in operation S103, the integrated controller 14 can transmit a request to the controller 104 of the battery replacement device 11-1 to measure the insulation resistance of the battery replacement device 11-1, which does not contain a battery. The controller 104 controls the measuring unit 103 to measure the insulation resistance of the battery replacement device 11-1. The measuring unit 103 can measure at least one of the first insulation resistance of the power line 111 and the second insulation resistance of the ground line 112. The method for measuring the insulation resistance is as described above and will not be repeated here.

[0116] Next, in operation S104, the controller 104 can determine the insulation state of the battery replacement device 11-1 based on the measured first insulation resistance of the power line 111 and the measured second insulation resistance of the ground line 112. The controller 104 can compare the insulation resistance value measured in the battery replacement device 11-1 without batteries installed with a reference resistance value. Based on the comparison result, the controller 104 can determine whether the battery replacement device 11-1 is in a normal insulation state or in an dielectric breakdown state. The method for determining the insulation state is as described above and will not be repeated here.

[0117] The controller 104 can transmit the insulation status of the battery replacement device 11-1 to the integrated controller 14. The controller 104 can transmit to the integrated controller 14 whether the battery replacement device 11-1 is in a normal insulation state or in an insulation breakdown state.

[0118] Next, in operation S105, the integrated controller 14 can determine whether the battery replacement device 11-1 is usable based on the insulation status of the battery replacement device 11-1.

[0119] According to the embodiment, if the battery replacement device 11-1 is determined to be in a normal insulation state, the integrated controller 14 can determine that the battery replacement device 11-1 is usable. As a result, the integrated controller 14 can make the battery replacement device 11-1 available for use by the user.

[0120] On the other hand, if the battery replacement device 11-1 is determined to be in an dielectric breakdown state, the integrated controller 14 can determine that the battery replacement device 11-1 is unusable. As a result, the integrated controller 14 can choose not to provide the battery replacement device 11-1 to the user.

[0121] Figure 7 is a flowchart illustrating the operation of a battery replacement system according to another embodiment disclosed herein. Figure 7 can be interpreted with reference to Figures 1 to 5.

[0122] Referring to Figure 7, in operation S201, the battery replacement system 1 can periodically measure the insulation resistance of multiple battery replacement devices 11-1, 11-2, ..., 11-n. The battery replacement system 1 can interrupt the use of one of the multiple battery replacement devices 11-1, 11-2, ..., 11-n that is currently in use in order to measure the insulation resistance.

[0123] According to the embodiment, among the multiple battery exchange devices 11-1, 11-2, ..., 11-n in the battery exchange system 1, some battery exchange devices (e.g., 11-1 and 11-2) may be out of use, while the remaining some battery exchange devices (e.g., 11-3 to 11-n) may be in use. The integrated controller 14 can interrupt the use of the battery exchange devices 11-3 to 11-n that are in use at predetermined first time intervals. According to the embodiment, each controller 104 of the battery exchange devices 11-3 to 11-n that are in use can stop charging the respective battery exchange devices 11-3 to 11-n that are in use. The controller 104 can disconnect the electrical connection between the power supply 12 and the battery being charged. For example, the controller 104 can control the power switch 102 of each battery exchange device 11-3 to 11-n to be opened.

[0124] Subsequently, the integrated controller 14 can transmit insulation resistance measurement requests to the controllers 104 of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n.

[0125] Next, in operation S202, the controller 104 can measure the insulation resistance of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n. The controller 104 controls the measuring unit 103 to measure the insulation resistance of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n. The measuring unit 103 can measure at least one of the first insulation resistance of the power line 111 and the second insulation resistance of the ground line 112. The method for measuring insulation resistance is as described above and will not be repeated here.

[0126] Next, in operation S203, the controller 104 of each of the battery replacement devices 11-1, 11-2, ..., 11-n can determine the insulation status of each of the battery replacement devices 11-1, 11-2, ..., 11-n based on the measured first insulation resistance of the power line 111 and the measured second insulation resistance of the ground line 112. The method for determining the insulation status is as described above and will not be repeated here.

[0127] The controller 104 can transmit the insulation status of each of the multiple battery replacement devices 11-1, 11-2, ..., 11-n to the integrated controller 14. The controller 104 can also transmit to the integrated controller 14 whether battery replacement device 11-1 is in a normal insulation state or in an insulation breakdown state.

[0128] Next, in operation S204, the integrated controller 14 can determine whether maintenance is required for each of the battery replacement devices 11-1, 11-2, ..., 11-n, based on the insulation status of each of the battery replacement devices 11-1, 11-2, ..., 11-n.

[0129] According to the embodiment, if the battery replacement device 11-1 is determined to be in a normal insulation state, the integrated controller 14 can determine that maintenance of the battery replacement device 11-1 is not required. If the battery replacement device determined to be in a normal insulation state is the battery replacement device 11-3 that was in use, the integrated controller 14 can cause the controller 104 of the battery replacement device 11-3 to resume use of the battery replacement device 11-3. For example, the controller 104 can resume charging the batteries housed in the battery replacement device 11-3.

[0130] In another embodiment, if the battery replacement device 11-1 is determined to be in a dielectric breakdown state, the controller 104 can determine that maintenance of the battery replacement device 11-1 is required. If the battery replacement device determined to be in a dielectric breakdown state is the battery replacement device 11-3 that was in use, the integrated controller 14 can prevent the use of the battery replacement device 11-3 from being resumed. The integrated controller 14 can also transmit a maintenance request for the battery replacement device 11-3 to the server.

[0131] The operation of this battery exchange system 1 allows for the periodic evaluation of the safety of each of the multiple battery exchange devices 11-1, 11-2, ..., 11-n. Furthermore, the battery exchange system 1 can efficiently maintain itself.

[0132] Figure 8 is a block diagram showing the hardware configuration of a computing system for realizing a battery replacement system according to one embodiment disclosed herein.

[0133] Referring to Figure 8, a computing system 1000 according to one embodiment disclosed herein may include an MCU 1020, a memory 1010, an input / output interface 1030, and a communication interface 1040.

[0134] The MCU1020 is a processor that executes various programs stored in the memory 1010 (for example, a battery cell characteristic data acquisition program, a latent variable extraction program, a distribution map generation program, a battery cell diagnostic program, etc.), processes various information including battery cell characteristic data and latent variables using these programs, and performs the functions of the integrated controller 14 or controller 104 included in the battery replacement system 1 shown in Figures 1 to 7 above.

[0135] Memory 1010 can store various programs, such as a battery cell characteristic data acquisition program, a latent variable extraction program, a distribution map generation program, and a battery cell diagnostic program. Memory 1010 can also store various information, including battery cell characteristic data and latent variables.

[0136] Multiple such memories 1010 may be provided as needed. The memories 1010 may be volatile or non-volatile. As volatile memory, RAM, DRAM, SRAM, etc., can be used. As non-volatile memory, ROM, PROM, EAROM, EPROM, EEPROM, flash memory, etc., can be used. The examples of memory 1010 listed above are merely illustrative and the invention is not limited to these examples.

[0137] The input / output interface 1030 can provide an interface that connects the MCU 1020 with input devices (not shown) such as keyboards, mice, and touch panels, and output devices (not shown) such as displays, enabling data transmission and reception.

[0138] The communication interface 1040 is configured to send and receive various data with a server and can be various devices capable of supporting wired or wireless communication. For example, the battery replacement system 1 can send and receive various information, including the SOC, OCV, and parameters of the battery cells, from a separately provided external server via the communication interface 1040.

[0139] Thus, a computer program according to one embodiment disclosed herein may be stored in memory 1010 and processed by MCU 1020 to be implemented as a module that performs, for example, the functions shown in Figure 2.

[0140] The foregoing disclosures outline the features of several embodiments so that those skilled in the art may more easily understand the aspects of this disclosure. Those skilled in the art will understand that this disclosure can be easily used as a basis for designing or modifying other structures to serve the same purposes or achieve the same advantages as the embodiments incorporated herein. Furthermore, those skilled in the art will recognize that such equivalent configurations do not exceed the scope of this disclosure, and that a variety of changes, substitutions, and modifications are possible from this specification without exceeding the scope of this disclosure. [Explanation of Symbols]

[0141] 1. Battery replacement system 11-1, 11-2,…, 11-n Battery replacement device 12 Power supply 13. Control Panel 14. Integrated Controller 101 Connection part 102 Power switch 103 Measuring part 104 Controller 111 Power line 112 Grand Line 113 Communication Line 121 Voltage / Current Measurement Section 122 First insulation resistance measurement section 123 Second insulation resistance measurement section S0, S1, S2, S3, S4 switches

Claims

1. Multiple battery replacement devices housing replaceable batteries, A battery replacement system including an integrated controller that manages the operation of the plurality of battery replacement devices, measures the insulation resistance of each of the plurality of battery replacement devices, and manages the use of the battery replacement devices based on the measured insulation resistance.

2. The battery replacement system according to claim 1, wherein when a battery replacement request is input from a user, the integrated controller checks whether there is a battery replacement device among the plurality of battery replacement devices that does not contain a battery, and manages the use of the battery replacement device that does not contain a battery based on the insulation resistance of the battery replacement device that does not contain a battery.

3. The battery replacement system according to claim 1, wherein the integrated controller measures the insulation resistance of each of the plurality of battery replacement devices at predetermined first time intervals and determines whether or not maintenance is required for each of the plurality of battery replacement devices.

4. The battery replacement system according to claim 3, wherein the integrated controller checks whether any of the plurality of battery replacement devices are currently in use, interrupts the use of the battery replacement device that is currently in use, and measures the insulation resistance of each of the plurality of battery replacement devices.

5. Each of the aforementioned plurality of battery replacement devices is The connecting part to which the battery is connected, A measuring unit for measuring the insulation resistance of at least one of the first and second wires connecting the power supply for charging the battery and the connecting part, The battery replacement system according to claim 1, further comprising: a controller that controls the measuring unit and determines the insulation state of at least one of the first and second wires based on the measured insulation resistance.

6. The aforementioned measuring unit is A first insulation resistance measuring unit for measuring the first insulation resistance, which is the insulation resistance of the first wire, The battery replacement system according to claim 5, further comprising: a second insulation resistance measuring unit for measuring a second insulation resistance, which is the insulation resistance of the second wire.

7. The battery replacement system according to claim 6, wherein the controller controls the first insulation resistance measuring unit and the second insulation resistance measuring unit, respectively, to measure at least one of the first insulation resistance and the second insulation resistance, determines the insulation state of the first wire based on the measured first insulation resistance value, and determines the insulation state of the second wire based on the measured second insulation resistance value.

8. The first insulation resistance measuring unit is, A first reference resistor connected between the first line and the ground terminal, A first switch connected to the first reference resistor, The system includes a second switch connected between the second wire and the grounding terminal, The second insulation resistance measuring unit is, A second reference resistor is connected in parallel with the second switch and between the second wire and the ground terminal, A third switch connected to the second reference resistor, The battery replacement system according to claim 6, further comprising a fourth switch connected in parallel with the first reference resistor and connected between the first line and the ground terminal.

9. The controller controls the operation of the first switch, second switch, third switch, and fourth switch so that current flows through the first insulation resistance and no current flows through the second insulation resistance, thereby measuring the first insulation resistance. The battery replacement system according to claim 8, wherein the operation of the first switch, the second switch, the third switch, and the fourth switch are controlled so that no current flows through the first insulation resistance and current flows through the second insulation resistance, thereby measuring the second insulation resistance.

10. The controller determines that the first wire is in a dielectric breakdown state if the measured first insulation resistance value is less than the first reference resistance value. The battery replacement system according to claim 8, wherein if the measured second insulation resistance value is less than the second reference resistance value, it is determined that the second wire is in a dielectric breakdown state.

11. Each of the aforementioned plurality of battery replacement devices is The battery replacement system according to claim 5, further comprising a power switch for switching the electrical connection between the power supply and the connecting portion.

12. The battery replacement system according to claim 11, wherein the controller opens the power switch before measuring the insulation resistance of at least one of the first and second wires.

13. The steps include measuring the insulation resistance of each of the multiple battery replacement devices that house replaceable batteries, A method for managing battery replacement devices, comprising the step of managing the use of each of the plurality of battery replacement devices based on the measured insulation resistance.

14. The step of measuring the insulation resistance of each of the plurality of battery replacement devices is: Steps include receiving a battery replacement request from the user, The steps include: confirming whether or not there is a battery replacement device among the aforementioned plurality of battery replacement devices that does not contain a battery; The steps include measuring the insulation resistance of a battery replacement device that does not contain batteries, The step of managing the use of each of the aforementioned multiple battery replacement devices is: A method for managing a battery replacement device according to claim 13, comprising the steps of: determining the insulation state of the battery replacement device without a battery based on the measured insulation resistance; and determining whether or not to provide the battery replacement device without a battery to the user based on the determined insulation state.

15. The step of measuring the insulation resistance of each of the plurality of battery replacement devices is: The procedure includes the step of measuring the insulation resistance of each of the plurality of battery replacement devices at predetermined first time intervals, The step of managing the use of each of the aforementioned multiple battery replacement devices is: A method for managing a battery replacement device according to claim 13, comprising the steps of determining the insulation state of each of the plurality of battery replacement devices based on the measured insulation resistance, and determining whether maintenance is required for each of the plurality of battery replacement devices based on the determined insulation state.

16. Before the step of measuring the insulation resistance of each of the aforementioned multiple battery replacement devices, The battery replacement device management method according to claim 15, further comprising the step of checking whether any of the plurality of battery replacement devices are currently in use, and interrupting the use of the battery replacement device that is currently in use.

17. The connecting part to which the battery is connected, A measuring unit for measuring the insulation resistance of at least one of the first and second wires connecting the power supply for charging the battery and the connecting part, A battery replacement device comprising: a controller that controls the measuring unit and determines the insulation state of at least one of the first and second wires based on the measured insulation resistance.

18. The aforementioned measuring unit is A first insulation resistance measuring unit for measuring the first insulation resistance, which is the insulation resistance of the first wire, The battery replacement device according to claim 17, further comprising a second insulation resistance measuring unit for measuring a second insulation resistance which is the insulation resistance of the second wire.

19. The battery replacement device according to claim 17, further comprising a power switch for switching the electrical connection between the power supply and the connecting portion.

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