Charging and discharging device, charging device, charging system

Abstract

The charging device (100) includes a control unit (120), a first insertion port (200a), a first connection IF (210a), a second insertion port (200b), and a second connection IF (210b). A charging accessory (250) is installed in the first insertion port (200a). The first connection IF (210a) is connected to the charging accessory (250). The control unit (120) causes the charging accessory (250) to perform a charging process. A verification accessory (260) is installed in the second insertion port (200b). The second connection IF (210b) is connected to the verification accessory (260). The control unit (120) enables the verification accessory (260) to perform its functions.

Description

Technical Field

[0001] This disclosure relates to charging and discharging technology, and more particularly to charging and discharging devices, charging devices, and charging systems for batteries. Background Technology

[0002] Battery packs that have exceeded their service life and are subject to recall are typically recycled by the manufacturer. In such cases, it is necessary to determine the location of the recalled battery packs. Therefore, a charger capable of attaching and detaching battery packs has a communication function for communicating with a server device via a base station. The charger sends the battery pack's identification information to the server device. The server device determines whether the battery pack is subject to recall based on the battery pack's identification information and, based on the base station's identification information (e.g., see Patent Document 1), determines the location of the battery pack (see Patent Document 1 for example).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2019-191833 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] Such battery packs are charged by being installed in a charging device. Furthermore, the business of renting out battery packs installed in charging devices has been investigated. In this case, the charging device houses multiple battery packs, which are then rented out to registered users. A method is being sought to enable the charging device to operate efficiently.

[0008] This disclosure was made in view of the following circumstances, and its purpose is to provide a technique for enabling charging and discharging devices to operate efficiently.

[0009] Methods for solving technical problems

[0010] To solve the aforementioned technical problems, a charging and discharging device according to this disclosure includes: a first insertion port and a second insertion port, disposed in a housing and having a common size; a first connection interface, disposed inside the first insertion port; a second connection interface, disposed inside the second insertion port; and a control unit, connected to the first connection interface and the second connection interface. A charging accessory, having a slot for inserting and removing a battery pack, is installed in the first insertion port, and the battery pack is charged when inserted into the slot. The first connection interface is connected to the charging accessory installed in the first insertion port, and the control unit causes the charging accessory connected to the first connection interface to perform charging processing. In the second insertion port, an accessory having the same size as the charging accessory but capable of performing a different function, and either the charging accessory or the second insertion port, can be installed. The second connection interface is connected to the accessory when the second insertion port is connected, and to the charging accessory when the second insertion port is connected. The control unit causes the accessory to perform its function when the second connection interface is connected, and causes the charging accessory to perform charging processing when the second connection interface is connected.

[0011] Other embodiments of this disclosure also relate to a charging and discharging device. The device includes: a first compartment for loading and unloading a first battery pack; a first control unit for controlling charging of the first battery pack loaded into the first compartment; a second compartment for loading and unloading a second battery pack; and a second control unit for controlling charging of the second battery pack loaded into the second compartment. When a management package is installed in the second compartment instead of the second battery pack, the management package instructs the first control unit to lock / unlock the first battery pack loaded into the first compartment. The first control unit, based on the instruction from the management package, controls the locking / unlocking of the first battery pack loaded into the first compartment. When the second battery pack is loaded into the second compartment, the first control unit maintains the first battery pack loaded into the first compartment unlocked. When the second battery pack is loaded into the second compartment, the second control unit maintains the second battery pack loaded into the second compartment unlocked.

[0012] Another aspect of this disclosure is a charging device. The device includes: multiple slots for accommodating multiple battery packs; a charging circuit for charging one or more battery packs when one or more of the slots contain battery packs; an acquisition unit for acquiring verification results from users of the battery packs; a notification unit for notifying users that a slot containing one of the charged battery packs is a removable slot and a slot without battery packs is an insertable slot when the acquisition unit indicates success; and a control unit that, after the notification unit notifies the removable and insertable slots, enables the removal of battery packs from the removable slots and the insertion of battery packs into the insertable slots. Once the verification is successful and the battery pack is removed from the removable slot, the control unit prohibits the battery pack from being inserted into the insertable slot, or from being further removed from a slot other than the removable slot. After the battery pack is inserted into the insertable slot, the control unit prohibits the battery pack from being removed from the removable slot, or from being further inserted into a slot other than the insertable slot.

[0013] Furthermore, any combination of the aforementioned constituent elements, or any scheme that transforms the manifestation of this disclosure into methods, apparatus, systems, recording media, computer programs, etc., is also valid as a scheme of this disclosure.

[0014] Invention Effects

[0015] According to this disclosure, the charging and discharging device can operate efficiently. Attached Figure Description

[0016] Figure 1 This is a diagram showing the structure of the charging system of Embodiment 1.

[0017] Figure 2 (a)-(i) is shown Figure 1 A diagram outlining the operation of the charging device.

[0018] Figure 3 (a)-(c) are shown Figure 1 A diagram summarizing the locking action of the slot.

[0019] Figure 4 It is shown Figure 1 A flowchart of the processing sequence of the charging device.

[0020] Figure 5 Figures (a)-(d) are diagrams illustrating the operation summary of the charging device of Embodiment 2.

[0021] Figure 6 Figures (a)-(d) are diagrams illustrating other operational outlines of the charging device of Embodiment 2.

[0022] Figure 7Figures (a) to (f) are diagrams illustrating the operation of the charging system of Embodiment 3.

[0023] Figure 8 This is a diagram showing the structure of the charging device of Embodiment 4.

[0024] Figure 9 (a)-(c) are shown Figure 8 A three-dimensional view of the appearance of the charging device.

[0025] Figure 10 (a)-(f) are perspective views showing the appearance of the charging device of Embodiment 5.

[0026] Figure 11 (a)-(c) are perspective views showing the appearance of the charging device of Embodiment 6.

[0027] Figure 12 (a)-(b) are perspective views showing the appearance of other charging devices in Embodiment 6.

[0028] Figure 13 This is a diagram showing the structure of the charging and discharging device of Embodiment 7.

[0029] Figure 14 This is a diagram showing other structures of the charging and discharging device of Embodiment 7.

[0030] Figure 15 This is a diagram showing the structure connecting two charging and discharging devices.

[0031] Figure 16 Figures (a)-(b) are diagrams showing the structure of the charging device in the modified example. Detailed Implementation

[0032] (Example 1)

[0033] Before describing the specific embodiments of this disclosure, a summary of the embodiments will be provided. This embodiment relates to a charging system capable of renting out multiple battery packs that can be charged in a charging device. For example, a user of the charging system removes a battery pack from the charging device and uses it. Alternatively, a user can charge a used battery pack by connecting it to the charging device. In such a charging system, it is desirable to reduce the occurrence of problems such as misuse by the user renting the battery pack and theft of the battery pack. Furthermore, it is sought to make the charging device operate efficiently.

[0034] The charging system pre-registers users and lends them cards that verify their rights, such as contactless IC (Integrated Circuit) cards. The IC card acts as a credential for renting the battery pack. The charging device has a card reader; the user verifies their identity by bringing the IC card close to the reader. Upon successful verification, the charging device determines which slot allows the battery pack to be removed (hereinafter referred to as the "removable slot") and which slot allows the battery pack to be inserted (hereinafter referred to as the "insertable slot"). Here, one removable slot and one insertable slot are determined. Furthermore, the charging device notifies the user of the removable and insertable slots.

[0035] When the user requests to rent a battery pack, they remove it from the removable slot. After removal, the charging device prevents the battery pack from being inserted into the insertable slot. Conversely, when returning the battery pack, the user inserts it into the insertable slot. After insertion, the charging device prevents removal. In other words, for each test, only one battery pack removal or insertion is permitted. This ensures only one action is performed per test, reducing the likelihood of problems. Furthermore, this reduced problem frequency allows the charging device to operate efficiently.

[0036] Figure 1 The structure of a charging system 1000 is shown. The charging system 1000 includes a network 10, a server 20, a power system 30, a charging device 100, and a first battery pack 300a to a fifth battery pack 300e collectively referred to as battery packs 300. The charging device 100 can be a charging and discharging device. The number of battery packs 300 included in the charging system 1000 is not limited to "5". The charging device 100 includes: a first slot 110a to a fifth slot 110e collectively referred to as slots 110, a first terminal 112a to a fifth terminal 112e collectively referred to as terminals 112, a first charging circuit 114a to a fifth charging circuit 114e collectively referred to as charging circuits 114, a control unit 120, a communication IF 130, a communication unit 140, a first notification unit 150a to a fifth notification unit 150e collectively referred to as notification unit 150, and a first locking unit 160a to a fifth locking unit 160e collectively referred to as locking unit 160. The control unit 120 includes an acquisition unit 122. The first battery pack 300a to the fifth battery pack 300e include a BMU (Battery Management Unit) 310.

[0037] Here, the charging device 100 and battery pack 300 are owned by the business that rents out the battery pack 300. Imagine a scenario where the battery pack 300 is lent to a user. When the user's first battery pack 300a has low remaining power, they go to a location with the charging device 100, insert the first battery pack 300a into the charging device 100, and then remove the second battery pack 300b from the charging device 100 and take it with them. The charging device 100 could also be owned by a different business than the one that lends out the battery pack 300, or it could be located in a convenience store, etc. Each battery pack 300 is a rechargeable secondary battery, such as a lithium-ion secondary battery. The BMU310 of the battery pack 300 monitors the battery pack 300 by measuring its remaining power, module temperature, etc.

[0038] The charging device 100 has multiple slots 110 that serve as loading and unloading ports for multiple battery packs 300. Each slot 110 is provided with a terminal 112 for connecting to a battery pack 300. The terminal 112 is connected to a charging circuit 114. When a battery pack 300 is installed in a slot 110, the charging circuit 114 charges one or more battery packs 300 via the terminal 112. The charging of the charging circuit 114 is controlled by a control unit 120, and the power used for charging in the charging circuit 114 is supplied by the power system 30. The charging process of the charging circuit 114 can use known techniques, so its description is omitted here. The terminal 112 is directly connected to the control unit 120, and communication with the control unit 120 and the BMU 310 is conducted via the terminal 112. For example, the BMU 310 sends information about the remaining battery level of the battery packs 300 to the control unit 120 via the terminal 112. The control unit 120 manages whether each slot 110 contains a battery pack 300 and the remaining amount of the battery pack 300 when it is installed by receiving information about the remaining amount of the battery pack 300.

[0039] In the following text, use Figure 2 (a)-(i) describe the processing of the charging device 100 when the user removes the battery pack 300 from the charging device 100 or when the user inserts the battery pack 300 into the charging device 100. Figure 2 (a)-(i) show the operation summary of the charging device 100. Figure 2 (a)-(c) show the action of removing the battery pack 300 from the charging device 100. Figure 2 (d)-(f) show the action of inserting the battery pack 300 into the charging device 100. Figure 2 of (a), Figure 2(d) represents the initial state. Here, as an example, the first battery pack 300a to the third battery pack 300c are installed in the first slot 110a to the third slot 110c, respectively, and the fifth battery pack 300e is installed in the fifth slot 110e. On the other hand, the fourth slot 110d is not equipped with a battery pack 300. (Return) Figure 1 .

[0040] The control unit 120 controls the locking unit 160 to prevent the battery pack 300 from being removed from the slot 110 containing the battery pack 300 and to prevent the battery pack 300 from being inserted into the slot 110 where it is not inserted. A first locking unit 160a is provided in the first slot 110a, a second locking unit 160b is provided in the second slot 110b, and a third locking unit 160c is provided in the third slot 110c. Furthermore, a fourth locking unit 160d is provided in the fourth slot 110d, and a fifth locking unit 160e is provided in the fifth slot 110e.

[0041] Figure 3 Images (a)-(c) show an overview of the operation of the locking portion 160 in the slot 110. The locking portion 160 includes a front locking portion 162 and an inner locking portion 164. The two front locking portions 162 are located near the opening of the slot 110, and the two inner locking portions 164 are located near the bottom of the slot 110. Furthermore, two protrusions 320 protruding outwards are provided on the side of the battery pack 300.

[0042] Figure 3 (a) indicates a slot 110 where a battery pack 300 is installed, for example, shown in Figure 2 of (a), Figure 2 The battery pack 300 is in the state of the first slot 110a to the third slot 110c and the fifth slot 110e (d). At this time, the battery pack 300 is connected to the terminal 112. Furthermore, the two inner locking portions 164 protrude into the slot 110. On the other hand, the two front locking portions 162 do not protrude into the slot 110. In this state, even if one wants to remove the battery pack 300 from the slot 110, the battery pack 300 cannot be removed because the protrusion 320 interferes with the inner locking portions 164. That is, the inner locking portions 164 are engaged with the battery pack 300, thereby preventing the battery pack 300 from being removed.

[0043] Figure 3 (b) indicates that the slot 110 of the battery pack 300 is not installed, for example, shown in Figure 2 of (a), Figure 2The state of the fourth slot 110d of (d). The two front locking portions 162 project into the slot 110. On the other hand, the two inner locking portions 164 do not project into the slot 110. In this state, even if the battery pack 300 is to be inserted into the slot 110, the protrusion 320 conflicts with the front locking portion 162, so that the battery pack 300 cannot be inserted into the slot 110. That is, when the control unit 120 makes it impossible to insert the battery pack 300, the front locking portion 162 prevents the entry of the battery pack 300, thereby preventing the removal of the battery pack 300. The structure of the locking portion 160 is not limited to this, and it may be composed only of the two inner locking portions 164. Figure 3 The (c) will be described later. Return Figure 2 of (a), Figure 2 of (d).

[0044] The user brings the IC card 400 close to the communication IF 130. The IC card 400 is pre-provided to the registered user. Return Figure 1 . The communication IF 130 is a card reader capable of communicating with the non-contact IC card 400. The communication IF 130 receives the information (hereinafter referred to as "authentication information") used for the authentication of the user from the IC card 400 by communicating with the IC card 400. The authentication information includes, for example, the identification information given to the user. The communication IF 130 is connected to the control unit 120 and outputs the authentication information to the control unit 120. The control unit 120 generates an authentication request including the authentication information received from the communication IF 130 and outputs the generated authentication request to the communication unit 140. The communication unit 140 sends the authentication request to the server 20 via the network 10.

[0045] After receiving the authentication request, the server 20 performs an authentication process on the authentication information included in the authentication request. The authentication process can use known techniques, so the description is omitted here. The server 20 sends the authentication result to the charging device 100 via the network 10. After receiving the authentication result, the communication unit 140 outputs the authentication result to the control unit 120. The acquisition unit 122 of the control unit 120 receives the authentication result from the communication unit 140. That is, the authentication result of the user of the battery pack 300 is obtained.

[0046] If the verification result obtained by the acquisition unit 122 indicates failure, the control unit 120 terminates the process. If the verification result obtained by the acquisition unit 122 indicates success, the control unit 120 selects one of the battery packs 300 installed in the slot 110. For example, the control unit 120 selects the battery pack 300 with the most remaining capacity. The control unit 120 designates the selected slot 110 containing the battery pack 300 as a "removable slot 110". The removable slot 110 can also be referred to as a slot 110 containing one of the charged battery packs 300. Furthermore, if the verification result obtained by the acquisition unit 122 indicates success, the control unit 120 designates a slot 110 without a battery pack 300 installed as an "installable slot 110".

[0047] The first notification unit 150a is provided corresponding to the first slot 110a, and turns on or off according to the instruction from the control unit 120. The first notification unit 150a can also light up in multiple colors. The second notification units 150b to the fifth notification units 150e are provided corresponding to each of the second slots 110b to the fifth slots 110e, and are configured in the same way as the first notification unit 150a. The control unit 120 lights up the notification unit 150 corresponding to the removable slot 110, for example, by lighting up a white light, and at the same time lights up the notification unit 150 corresponding to the insertable slot 110, for example, by lighting up a white light. The control unit 120 keeps the slots 110 other than these slots off.

[0048] exist Figure 2 (b) Figure 2 In (e), a frame-shaped notification section 150 is arranged to surround the charging device 100. The shape of the notification section 150 is not limited to a frame shape. Here, the slot 110 can be removed to form the first slot 110a, where the first notification section 150a illuminates; when inserted into the slot 110, it forms the fourth slot 110d, where the fourth notification section 150d illuminates. The second notification section 150b, the third notification section 150c, and the fifth notification section 150e are off. Figure 1 .

[0049] After the control unit 120 notifies the removable slot 110 and the insertable slot 110 by illuminating the indicator light of the notification unit 150, it enables the removal of the battery pack 300 from the removable slot 110 and enables the insertion of the battery pack 300 into the insertable slot 110. This is equivalent to... Figure 2 (b) Figure 2 In (e), it is possible to remove the first battery pack 300a from the first slot 110a and to insert the battery pack 300 into the fourth slot 110d. In order to make it possible to remove the battery pack 300 or to insert the battery pack 300, the control unit 120 controls the locking unit 160.

[0050] Figure 3(c) shows a removable slot 110, or an insertable slot 110, for example, showing Figure 2 of (a), Figure 2 The first slot 110a and the fourth slot 110d of (d) are in their respective states. Furthermore, the two front locking portions 162 and the two inner locking portions 164 do not protrude into the slot 110. In this state, the battery pack 300 can be removed from the slot 110 and inserted into the slot 110. That is, when the control unit 120 makes it possible to remove or insert the battery pack 300, the front locking portions 162 and the inner locking portions 164 do not protrude into the slot 110. Here, [the text continues with further details about the process]. Figure 3 When the state of the front locking part 162 and the inner locking part 164 of (c) is referred to as the first state, Figure 3 The states of the front locking portion 162 and the inner locking portion 164 of (a)-(b) are referred to as the second state. Return Figure 1 .

[0051] After the battery pack 300 is removed from the removable slot 110, the control unit 120 detects via terminal 112 that the battery pack 300 is not connected. Upon detecting that the battery pack 300 is not connected, the control unit 120 locks the removable slot 110 in a locked position. Figure 3 The state of (b). Furthermore, when the control unit 120 detects that the battery pack 300 is not connected, it prevents the battery pack 300 from being inserted into the insertion slot 110. That is, the control unit 120 locks the locking part 160 of the insertion slot 110. Figure 3 The state of (c) is in Figure 3 The state of (b) is as follows. Therefore, if the battery pack 300 is removed, it cannot be installed. Furthermore, further removal of the battery pack 300 from the slot 110 other than the removable slot 110 is prohibited. Subsequently, the control unit 120 turns off the notification units 150 of the removable slot 110 and the insertion slot 110. Figure 2 In (b), if the first battery pack 300a is removed from the first slot 110a, it becomes Figure 2 The state is (c). At this time, the battery pack 300 cannot be inserted into the fourth slot 110d, and the first notification unit 150a and the fourth notification unit 150d are turned off. Return Figure 1 .

[0052] On the other hand, if the battery pack 300 is not removed from the removable slot 110 and is instead inserted into the insertable slot 110, the control unit 120 detects the connection of the battery pack 300 via terminal 112. When the control unit 120 detects the connection of the battery pack 300, it locks the insertable slot 110 in a locked position. Figure 3The state of (a). Furthermore, when the control unit 120 detects that the battery pack 300 is connected, it prevents the battery pack 300 from being removed from the removable slot 110. That is, the control unit 120 locks the locking part 160 of the removable slot 110. Figure 3 The state of (c) becomes Figure 3 The state of (a) is such that if the battery pack 300 is inserted, it cannot be removed. Furthermore, further insertion of the battery pack 300 into slots 110 other than the insertable slot 110 is prohibited. Subsequently, the control unit 120 turns off the notification units 150 for both the removeable slot 110 and the insertable slot 110. Figure 2 In (e), if a fourth battery pack 300d is installed in the fourth slot 110d, then it becomes Figure 2 (f). At this time, the first battery pack 300a cannot be removed from the first slot 110a, and the first notification unit 150a and the fourth notification unit 150d are turned off. Return Figure 1 .

[0053] Thus, after a successful verification and removal of the battery pack 300 from the removable slot 110, the control unit 120 prevents the battery pack 300 from being inserted into the insertable slot 110. On the other hand, if, after a certain period following notification from the notification unit 150 to the removable slot 110 and the insertable slot 110, the control unit 120 returns both the removal and insertion of the battery pack 300 to a prohibited state. That is, the locking part 160 of the removable slot 110... Figure 3 The state of (c) returns to Figure 3 In state (a), the locking part 160 can be inserted into slot 110 from... Figure 3 The state of (c) returns to Figure 3 The state of (b). Thereafter, the control unit 120 turns off the notification unit 150 of the removable slot 110 and the notification unit 150 of the insertable slot 110.

[0054] Here, let's imagine... Figure 2 As in (g), in the initial state, there is no situation where the slot 110 is not filled with the battery pack 300. Figure 2In (g), first battery packs 300a to fifth battery packs 300e are respectively installed in the first slot 110a to the fifth slot 110e. To prevent the removal of battery packs 300 from the slots 110 containing them, the control unit 120 controls the locking unit 160. The user brings the IC card 400 close to the communication IF 130. The communication IF 130 receives verification information from the IC card 400 by communicating with it. The control unit 120 generates a verification request containing the verification information received from the communication IF 130 and outputs the generated verification request to the communication unit 140. The communication unit 140 sends the verification request to the server 20 via the network 10.

[0055] Server 20 performs verification processing on the verification information contained in the verification request. Server 20 sends the verification result to charging device 100 via network 10. Acquisition unit 122 of control unit 120 receives the verification result from communication unit 140. If the verification result obtained by acquisition unit 122 indicates success, control unit 120 selects one of the battery packs 300 installed in slot 110. Control unit 120 determines the slot 110 into which the selected battery pack 300 is installed as a "removable slot 110". Furthermore, if the verification result obtained by acquisition unit 122 indicates success, and there is a slot 110 into which a battery pack 300 is not installed, control unit 120 determines which slot 110 can be installed.

[0056] The control unit 120 illuminates the notification unit 150 corresponding to the removable slot 110, for example, by illuminating a white light. Figure 2 In (h), slot 110 can be removed as the first slot 110a, and the first notification unit 150a lights up. The second notification units 150b to the fifth notification units 150e turn off. Return Figure 1 After the control unit 120 notifies the removable slot 110 by illuminating a light on the notification unit 150, it enables the removal of the battery pack 300 from the removable slot 110. Conversely, if the notification unit 150 does not notify the insertable slot 110, the control unit 120 prevents the battery pack 300 from being inserted into any slot other than the removable slot 110. This is equivalent to... Figure 2 In (h), it is made possible to remove the first battery pack 300a from the first slot 110a.

[0057] After the battery pack 300 is removed from the removable slot 110, the control unit 120 detects via terminal 112 that the battery pack 300 is not connected. Upon detecting the lack of connection, the control unit 120 prevents the battery pack 300 from being inserted into the removable slot 110. Subsequently, the control unit 120 turns off the notification light on the removable slot 110. Figure 2 In (h), after the first battery pack 300a is taken out from the first slot 110a, it becomes Figure 2 The state of (i). At this time, the first notification unit 150a turns off the lights. Return Figure 1 .

[0058] If the verification result obtained by the acquisition unit 122 indicates success, and a charged battery pack 300 exists, the control unit 120 may not determine whether the removable slot 110 is available. In this case, the notification unit 150 will not notify the removable slot 110. Furthermore, if the notification unit 150 does not notify the removable slot 110, the control unit 120 will maintain the state where the removal of the battery pack 300 is not possible.

[0059] The main body of the apparatus, system, or method disclosed herein includes a computer. The computer executes a program to achieve the functions of the main body of the apparatus, system, or method disclosed herein. The computer has a processor that operates according to the program as its main hardware structure. The type of processor is not limited as long as it can perform functions by executing the program. The processor is composed of one or more electronic circuits, including semiconductor integrated circuits (ICs) or LSIs (Large Scale Integration). Multiple electronic circuits can be integrated on a single chip or disposed on multiple chips. Multiple chips can be integrated in a single device or included in multiple devices. The program is recorded on a non-transitory recording medium that can be read by a computer, such as ROM, optical disk, or hard disk drive. The program can be pre-stored on the recording medium or supplied to the recording medium via a wide area network, including the Internet.

[0060] Explain the operation of the charging system 1000 based on the above structure. Figure 4 This is a flowchart illustrating the processing procedure of the charging device 100. The acquisition unit 122 acquires the verification result (S10). When the verification result indicates success (S12, Y), if an insertable slot 110 exists (S14, Y), the control unit 120 illuminates the notification unit 150 of the insertable slot 110 and unlocks the locking unit 160 (S16). If no insertable slot 110 exists (S14, N), step 16 is skipped. The control unit 120 illuminates the notification unit 150 of the removable slot 110 and unlocks the locking unit 160 (S18).

[0061] If the battery pack 300 is not installed in the insertable slot 110 (S20 N) or has not been removed from the removable slot 110 (S22 N), after a certain period of time (S24), the control unit 120 turns off the notification unit 150 and locks the locking unit 160 (S26). If the battery pack 300 is installed in the insertable slot 110 (S20 Y) or has not been removed from the removable slot 110 (S22 Y), the control unit 120 turns off the notification unit 150 and locks the locking unit 160 (S26). If the verification result does not indicate success (S12 N), the process ends.

[0062] According to this embodiment, after a successful verification and removal of the battery pack 300 from the removable slot 110, insertion of the battery pack 300 into the insertable slot 110 is prohibited. Therefore, the process can be limited to removing only one battery pack 300. Furthermore, since the process is limited to removing only one battery pack 300, the occurrence of misuse or problems can be reduced. Moreover, the reduction in misuse or problems allows the charging device 100 to operate efficiently. Furthermore, after a successful verification and insertion of the battery pack 300 into the insertable slot 110, removal of the battery pack 300 from the removable slot 110 is prohibited. Therefore, the process can be limited to inserting only one battery pack 300. Furthermore, limiting the process to inserting only one battery pack 300 reduces the occurrence of misuse or problems.

[0063] Furthermore, if a charged battery pack 300 exists, the removable slot 110 is not notified, and the removal of the battery pack 300 remains in a state where it cannot be removed. Therefore, processing of the insertable slot 110 can be performed even if the removable slot 110 does not exist. Conversely, if a slot 110 does not contain a battery pack 300, the insertable slot 110 is not notified, and the insertion of the battery pack 300 remains in a state where it cannot be inserted. Therefore, processing of the removable slot 110 can be performed even if the insertable slot 110 does not exist.

[0064] Furthermore, if, within a certain period after verification, the battery pack 300 is neither removed from the removable slot 110 nor inserted into the insertable slot 110, the removal and insertion of the battery pack 300 are reset to an unavailable state, thus limiting the validity period of the verification. Moreover, by limiting the validity period of the verification, incorrect use or problems can be suppressed. Furthermore, the system is configured to be in a first state when removal or insertion of the battery pack 300 is possible, and in a second state when removal or insertion is impossible, thus preventing incorrect removal or insertion of the battery pack 300.

[0065] The summary of one aspect of this disclosure is as follows. A charging device (100) according to one aspect of this disclosure includes: a plurality of slots (110) capable of accommodating and dispensing a plurality of battery packs (300); a charging circuit (114) for charging one or more battery packs (300) when one or more of the plurality of slots (110) are filled; an acquisition unit (122) for acquiring verification results of users of the battery packs (300); and a notification unit (150) for notifying users of the battery packs (300) if the verification result acquired by the acquisition unit (122) indicates success. The system notifies that one slot (110) of a charged battery pack (300) is a removable slot (110) and notifies that one slot (110) without a battery pack (300) is an insertable slot (110); and the control unit (120) and the notification unit (150) make it possible to remove the battery pack (300) from the removable slot (110) and to insert the battery pack (300) into the insertable slot (110) after notifying the removable slot (110) and the insertable slot (110). After a successful verification, the control unit (120) prevents the battery pack (300) from being inserted into the insertable slot (110) or from being further removed from a slot other than the removable slot (110). After the battery pack (300) is inserted into the insertable slot (110), the control unit (120) prevents the battery pack (300) from being removed from the removable slot (110) or from being further inserted into a slot other than the insertable slot (110).

[0066] Alternatively, if the verification result obtained by the acquisition unit (122) indicates success, and if a charged battery pack (300) exists, the notification unit (150) will not notify the removable slot (110), and the control unit (120) will keep the removal of the battery pack (300) in a non-removable state if the notification unit (150) does not notify the removable slot (110).

[0067] Alternatively, if the verification result obtained by the acquisition unit (122) indicates success, but there is a slot (110) where the battery pack (300) is not installed, the notification unit (150) will not notify the slot (110) that it can be installed, and the control unit (120) will keep the installation of the battery pack (300) in a state where it cannot be installed if the notification unit (150) does not notify the slot (110) that it can be installed.

[0068] If, within a certain period after the notification unit (150) notifies the removable slot (110) and the insertable slot (110), the control unit (120) returns the removal of the battery pack (300) from the removable slot (110) and the insertion of the battery pack (300) into the insertable slot (110) to the "cannot" state.

[0069] Each of the multiple slots (110) may also be equipped with a locking mechanism, which in a first state does not protrude into the slot (110) and in a second state protrudes into the slot (110). When the removal or insertion of the battery pack (300) is made possible in the control unit (120), the locking mechanism is in the first state. When the removal of the battery pack (300) is not possible in the control unit (120), the locking mechanism is in the second state and engages with the battery pack (300). Alternatively, when the insertion of the battery pack (300) is not possible in the control unit (120), the locking mechanism is in the second state and prevents the battery pack (300) from entering.

[0070] (Example 2)

[0071] Next, Embodiment 2 will be described. Similar to Embodiment 1, Embodiment 2 relates to a charging system 1000 capable of renting out multiple battery packs 300 that can be charged in a charging device 100. Specifically, Embodiment 2 relates to a process for selecting a removable slot 110 from among multiple candidate slots 110 that are removable slots 110. Furthermore, Embodiment 2 relates to a process for selecting an insertable slot 110 from among multiple candidate slots 110 that are insertable slots 110. The charging system 1000 of Embodiment 2 is designed for use with… Figure 1 The same type. Here, the focus is on the differences from Example 1.

[0072] In the following text, use Figure 5 (a)-(d) describe the process by which the user removes the battery pack 300 from the charging device 100. Figure 5 (a)-(d) show the operation summary of the charging device 100. Figure 5 (a) represents the initial state. Here, as an example, the first to fifth battery packs 300a to 300e are respectively installed in the first slot 110a to the fifth slot 110e. The first person 500a approaches the IC card 400 near the communication IF130. The first person 500a is, for example, a user approximately 180cm tall. Return Figure 1The communication IF130 receives verification information from the IC card 400 by communicating with the IC card 400. The control unit 120 generates a verification request that includes the verification information received from the communication IF130 and outputs the generated verification request to the communication unit 140. The communication unit 140 sends the verification request to the server 20 via the network 10.

[0073] After receiving a verification request, server 20 performs verification processing on the verification information contained in the verification request. In addition, server 20 stores information related to the recorded user (hereinafter referred to as "user information"). User information includes, for example, height and gender. If the verification result is successful, server 20 retrieves the user information corresponding to the verification information. Server 20 sends the verification result to charging device 100 via network 10. If the verification result is successful, server 20 also sends the user information to charging device 100 via network 10. After receiving the verification result and user information, communication unit 140 outputs the verification result and user information to control unit 120. Acquisition unit 122 of control unit 120 receives the verification result and user information from communication unit 140.

[0074] If the verification result obtained by the acquisition unit 122 indicates success, and if multiple charged battery packs 300 exist, the control unit 120 selects a slot 110 containing one of the multiple charged battery packs 300 based on the user information. For example, the control unit 120 subtracts a predetermined value from the user's height. The predetermined value is determined such that the subtraction result is close to the height of the user's hand. The control unit 120 stores information about the height of each slot 110 and preferentially selects the slot 110 that is closest to the height of the subtraction result and contains a charged battery pack 300. The selected slot 110 is equivalent to a removable slot 110. The subsequent processing is the same as in Embodiment 1. Figure 5 In (b), the first slot 110a is selected as the removable slot, and the first notification unit 150a lights up.

[0075] On the other hand, the same procedure is performed when there are multiple slots 110 where the battery pack 300 is not installed. That is, the control unit 120 selects one of the multiple slots 110 where the battery pack 300 is not installed based on user information. The selected slot 110 is equivalent to the slot 110 that can be installed.

[0076] Figure 5 (c) is another initial state. Here, as an example, the first battery pack 300a to the fifth battery pack 300e are respectively installed in the first slot 110a to the fifth slot 110e. The second person 500b brings the IC card 400 close to the communication IF130. The second person 500b is, for example, a user with a height of about 160cm. The processing of the charging device 100 and the server 20 is the same as before. Figure 5 In (d), the third slot 110c is selected as the removable slot 110, and the second notification unit 150b lights up. That is, the taller the character 500 is, the higher the slot 110 is selected as the removable slot 110, and the shorter the character 500 is, the lower the slot 110 is selected as the removable slot 110.

[0077] Next, other selection processes for choosing the removal slot 110 and the insertion slot 110 will be described. As a prerequisite, when the battery pack 300 is installed in the insertion slot 110 of the charging device 100, i.e., when the battery pack 300 is returned, the control unit 120 receives information about the remaining capacity of the battery pack 300 via terminal 112. The control unit 120 sends the user's verification information and the remaining capacity information together from the communication unit 140 to the server 20. After receiving the user's verification information and the remaining capacity information, the server 20 stores information about the user's past usage records of the battery pack 300 (hereinafter referred to as "usage record information") by storing the remaining capacity information for each user.

[0078] In the following text, use Figure 6 (a)-(d) describe the process by which the user removes the battery pack 300 from the charging device 100. Figure 6 (a)-(d) show other operational details of the charging device 100. Figure 6 (a) represents the initial state. Here, as an example, first battery packs 300a to fifth battery packs 300e are installed in the first to fifth slots 110a to 110e, respectively. Furthermore, the first battery pack 300a has a 100% charge, the second battery pack 300b has a 30% charge, the third battery pack 300c has a 50% charge, the fourth battery pack 300d has a 50% charge, and the fifth battery pack 300e has a 100% charge. The charge levels of these battery packs 300 are managed by the control unit 120 of the charging device 100.

[0079] The third party, 500c, brings IC card 400 close to communication IF130. The third party, 500c, is a user who consumes relatively high amounts of power from battery pack 300. That is, the third party, 500c, is a user with a history of returning battery pack 300 with relatively low remaining power. Return Figure 1 The communication IF130 receives verification information from the IC card 400 by communicating with the IC card 400. The control unit 120 generates a verification request that includes the verification information received from the communication IF130 and outputs the generated verification request to the communication unit 140. The communication unit 140 sends the verification request to the server 20 via the network 10.

[0080] After receiving the verification request, server 20 performs verification processing on the verification information contained in the verification request. If the verification result indicates success, server 20 extracts the usage record information corresponding to the verification information. Server 20 sends the verification result to charging device 100 via network 10. If the verification result indicates success, server 20 also sends the usage record information to charging device 100 via network 10. After receiving the verification result and usage record information, communication unit 140 outputs the verification result and usage record information to control unit 120. Acquisition unit 122 of control unit 120 receives the verification result and usage record information from communication unit 140.

[0081] If the verification result obtained by the acquisition unit 122 indicates success, and if multiple charged battery packs 300 exist, the control unit 120 selects a slot 110 containing one of the multiple charged battery packs 300 based on the usage record information. The control unit 120 estimates the user's past remaining capacity based on the usage record information. For example, the control unit 120 estimates the past remaining capacity by performing statistical processing such as averaging on the past remaining capacity contained in the usage record information. Alternatively, the control unit 120 can estimate the past remaining capacity by selecting the minimum value from the past remaining capacity contained in the usage record information. Here, the past remaining capacity is shown in the range of 0% to 100%. The control unit 120 derives the required remaining capacity by subtracting the past remaining capacity from 100%. The control unit 120 selects a battery pack 300 among the battery packs 300 that has a remaining capacity greater than or equal to the required remaining capacity. If multiple battery packs 300 are available for selection, the control unit 120 selects the battery pack 300 with the minimum remaining capacity among them. The slot 110 for inserting the selective battery pack 300 is equivalent to a removable slot 110. Subsequent processing is the same as in Example 1. Figure 6 In (b), the first slot 110a containing the first battery pack 300a with a remaining capacity of 100% is a removable slot 110, and the first notification unit 150a is illuminated.

[0082] Figure 6 (c) is another initial state. Here, as an example, the first battery pack 300a to the fifth battery pack 300e are respectively installed in the first slot 110a to the fifth slot 110e. The fourth user 500d brings the IC card 400 close to the communication IF130. The fourth user 500d is a user whose power consumption of the battery pack 300 is relatively low. That is, the fourth user 500d is a user with a record of having a relatively large remaining power in the battery pack 300 when it is returned. The processing of the charging device 100 and the server 20 is the same as above. Figure 6In (d), the third slot 110c, which contains a third battery pack 300c with a remaining capacity of 50%, is a removable slot 110, and the third notification unit 150c illuminates. That is, compared to the third unit 500c, for the fourth unit 500d, which uses less battery pack 300, the slot 110 containing a battery pack 300 with a smaller remaining capacity is selected.

[0083] According to this embodiment, if multiple charged battery packs 300 exist, the slot 110 containing one of the charged battery packs 300 is selected based on the user information; therefore, the slot 110 corresponding to the user information can be selected. Furthermore, selecting the slot 110 corresponding to the user information improves user convenience. Additionally, if multiple slots 110 do not contain battery packs 300, one slot 110 is selected based on the user information; therefore, the slot 110 corresponding to the user information can be selected. Furthermore, since the information of the user to be verified (height, gender, etc.) is pre-registered, the slot 110 that is easy to access can be changed.

[0084] Furthermore, if multiple charged battery packs 300 exist, the slot 110 containing one of the charged battery packs 300 is selected based on usage record information, thereby allowing the selection of a battery pack 300 with sufficient remaining capacity according to the user's usage records. Moreover, by selecting a battery pack 300 with sufficient remaining capacity according to the user's usage records, the charging device 100 can operate efficiently.

[0085] The following is a summary of one solution disclosed herein. The acquisition unit (122) may also acquire user information related to the user. If the verification result obtained by the acquisition unit (122) indicates success, and if multiple charged battery packs (300) exist, the notification unit (150) selects one of the multiple charged battery packs (300) based on the user information and notifies the user that a slot (110) containing the selected battery pack (300) is a removable slot (110). If multiple slots (110) do not contain battery packs (300), the notification unit selects one of the multiple slots (110) without battery packs (300) based on the user information and notifies the user that the selected slot (110) is an insertable slot (110).

[0086] Alternatively, the acquisition unit (122) may also acquire information on the user's past usage records of the battery pack (300), and the notification unit (150) may, if the verification result obtained by the acquisition unit (122) indicates success, select one of the multiple charged battery packs (300) based on the usage record information and notify the user that a slot (110) containing the selected battery pack (300) is a removable slot (110).

[0087] (Example 3)

[0088] Next, Embodiment 3 will be described. Similarly to the above, Embodiment 3 relates to a charging system 1000 capable of charging multiple battery packs 300 at a charging device 100. In Embodiment 3, multiple charging devices 100 as described above are connected. The charging system 1000 of Embodiment 3 is connected to... Figure 1 The same type. Here, we will focus on the differences from the above.

[0089] Figure 7 (a)-(f) show an overview of the operation of the charging system 1000. Here, as an example, the charging system 1000 includes a first charging device 100a to a fourth charging device 100d. The number of charging devices 100 included in the charging system 1000 is not limited to "4". Figure 7 (a) is a top view showing four charging devices 100 arranged in a quadrilateral shape. First charging device 100a and third charging device 100c are arranged opposite each other, and second charging device 100b and fourth charging device 100d are arranged opposite each other. First charging device 100a is adjacent to second charging device 100b and fourth charging device 100d; second charging device 100b is adjacent to first charging device 100a and third charging device 100c; third charging device 100c is adjacent to second charging device 100b and fourth charging device 100d; and fourth charging device 100d is adjacent to third charging device 100c and first charging device 100a. The control unit 120 of each charging device 100 stores information related to adjacent charging devices 100.

[0090] exist Figure 7 In (b), the IC card 400 is approached by the communication IF 130 of the first charging device 100a. The first charging device 100a performs the same process as before, receiving the verification result from the server 20 (not shown). If the verification result indicates success, the control unit 120 of the first charging device 100a selects the removable slots 110 and the insertable slots 110 from the multiple slots 110 of the first charging device 100a, the second charging device 100b, and the fourth charging device 100d. This is equivalent to selecting the multiple slots 110 of the first charging device 100a, the second charging device 100b adjacent to the first charging device 100a, and the multiple slots 110 of the fourth charging device 100d.

[0091] As shown in the figure, the notification section 150 protrudes from the surface of the housing, making it easy to identify the selected slot 110 even when viewed from the side of the charging device 100. For example, the notification section 150 is easily identifiable even to people standing... Figure 7In case (b) the front of the figure 500 lights up by using the slot 110 of the second charging device 100b, the slot 110 of the second charging device 100b on the side can also be identified from the position of the figure 500.

[0092] Figure 7 (c) is a top view showing a second charging device 100b and a third charging device 100c arranged in a row, and a first charging device 100a and a fourth charging device 100d arranged opposite each other at their ends. The first charging device 100a is adjacent to the second charging device 100b, and the second charging device 100b is adjacent to the first charging device 100a and the third charging device 100c. The third charging device 100c is adjacent to the second charging device 100b and the fourth charging device 100d, and the fourth charging device 100d is adjacent to the third charging device 100c. The control unit 120 of each charging device 100 stores information related to the adjacent charging devices 100.

[0093] exist Figure 7 In step (d), the IC card 400 is approached by the communication IF 130 of the second charging device 100b. The second charging device 100b performs the same process as described above and receives the verification result from the server 20 (not shown). If the verification result indicates success, the control unit 120 of the second charging device 100b selects removable slots and insertable slots from the multiple slots 110 of the first charging device 100a, the second charging device 100b, and the third charging device 100c. This is equivalent to selecting the multiple slots 110 of the second charging device 100b, the first charging device 100a adjacent to the second charging device 100b, and the multiple slots 110 of the third charging device 100c.

[0094] Figure 7 (e) is a top view showing the arrangement of the first charging devices 100a to the fourth charging devices 100d. The first charging device 100a is adjacent to the second charging device 100b, and the second charging device 100b is adjacent to the first charging device 100a and the third charging device 100c. The third charging device 100c is adjacent to the second charging device 100b and the fourth charging device 100d, and the fourth charging device 100d is adjacent to the third charging device 100c. The control unit 120 of each charging device 100 stores information related to the adjacent charging devices 100.

[0095] exist Figure 7In (f), the IC card 400 is approached by the communication IF 130 of the second charging device 100b. The second charging device 100b performs the same process as described above and receives the verification result from the server 20 (not shown). If the verification result indicates success, the control unit 120 of the second charging device 100b selects the removable slot 110 and the insertable slot 110 from the multiple slots 110 of the first charging device 100a, the second charging device 100b, and the third charging device 100c. This is equivalent to selecting the multiple slots 110 of the second charging device 100b, the first charging device 100a adjacent to the second charging device 100b, and the multiple slots 110 of the third charging device 100c.

[0096] According to this embodiment, a removable slot 110 and an insertable slot 110 are selected from the verified charging device 100 and the charging device 100 adjacent to it, so that easily accessible removable slots 110 and insertable slots 110 can be selected. Furthermore, based on the standing position of the verified user, the notification unit 150 can notify the removable slot 110 and insertable slot 110 from among the charging devices 100 within the visible range.

[0097] One aspect of this disclosure is as follows. In a charging system (1000) connected to multiple charging devices (100), when a verification result is obtained from the acquisition unit (122) of one of the multiple charging devices (100), a removable slot (110) and an insertable slot (110) are selected from the charging devices (100) adjacent to that charging device (100) and the charging device (100).

[0098] (Example 4)

[0099] Next, Embodiment 4 will be described. Similarly to the above, Embodiment 4 relates to a charging system capable of renting multiple battery packs for charging in a charging device. The aim is to increase the flexibility in the installation of the charging device 100 and to enable the charging device 100 to operate efficiently. In Embodiment 4, the structure of the charging device 100 differs from that of the previous embodiments. Here, the description will focus on the differences from the previous embodiments.

[0100] Figure 8The structure of the charging device 100 is shown. The charging device 100 includes a control unit 120, a communication unit 140, a first insertion port 200a and a second insertion port 200b collectively referred to as insertion ports 200, and a first connection IF210a and a second connection IF210b collectively referred to as connection IF210. A charging accessory 250 is inserted into the first insertion port 200a, and the charging accessory 250 includes a slot 110, a terminal 112, and a charging circuit 114. A battery pack 300, including a BMU 310, is inserted into the slot 110. A verification accessory 260, including a communication IF130, is inserted into the second insertion port 200b.

[0101] The first insertion port 200a and the second insertion port 200b are provided in the housing of the charging device 100 and have a common size. The number of insertion ports 200 provided in the charging device 100 is not limited to "2". The first connection IF 210a is provided inside the first insertion port 200a, and the second connection IF 210b is provided inside the second insertion port 200b. The control unit 120 is connected to the first connection IF 210a and the second connection IF 210b.

[0102] The first insertion port 200a can accommodate a charging accessory 250. The charging accessory 250 has a slot 110 for attaching and detaching a battery pack 300, and charges the battery pack 300 when it is inserted into the slot 110. A first connection IF 210a is connected to the charging accessory 250 inserted in the first insertion port 200a. The control unit 120 performs charging processing on the charging accessory 250 connected to the first connection IF 210a. That is, the processing when the charging accessory 250 is connected to the first insertion port 200a and the battery pack 300 is connected to the slot 110 of the charging accessory 250 is the same as the processing when the battery pack 300 is connected to the slot 110 of the charging device 100 described above.

[0103] The second insertion port 200b can accommodate either the verification accessory 260 or the charging accessory 250. Figure 8 In this configuration, a verification accessory 260 is installed in the second insertion port 200b. However, it is also possible to install the verification accessory 260 in the first insertion port 200a and the charging accessory 250 in the second insertion port 200b. Alternatively, the charging accessory 250 can be installed in either the first insertion port 200a or the second insertion port 200b. The processing of the charging device 100 when the charging accessory 250 is installed in the second insertion port 200b is the same as the processing of the charging device 100 when the charging accessory 250 is installed in the first insertion port 200a.

[0104] The verification accessory 260 has the same dimensions as the charging accessory 250, but is capable of performing different functions. The verification accessory 260 includes a communication IF 130, which enables it to perform user verification functions. The communication IF 130 is the same as described above, so its description is omitted here. Accessories capable of performing functions different from the charging accessory 250 are not limited to the verification accessory 260; for example, it could be an accessory with a monitor. Furthermore, the accessory may include a control unit 120. In this case, the insertion direction of the accessory can also be configured to be able to flip up and down.

[0105] The second connection IF210b is connected to the verification accessory 260 when the second insertion port 200b is connected to it, and to the charging accessory 250 when the second insertion port 200b is connected to it. The control unit 120 enables the verification accessory 260 to perform its function when the second connection IF210b is connected to the verification accessory 260, and enables the charging accessory 250 to perform charging processing when the second connection IF210b is connected to the charging accessory 250. Specifically, if the user's verification result indicates success, the control unit 120 allows the user to use the charging accessory 250 installed in the first insertion port 200a.

[0106] Figure 9 (a)-(c) are perspective views showing the appearance of the charging device 100. Figure 9 (a) is an example of the appearance of the charging device 100. On the inclined surface of the housing 102 of the charging device 100, a plurality of insertion ports 200, including a first insertion port 200a and a second insertion port 200b, are provided. A verification accessory 260 is mounted on the second insertion port 200b. Charging accessories 250 are mounted on the insertion ports 200 other than the second insertion port 200b, and a battery pack 300 is mounted on each charging accessory 250. The insertion ports 200 other than the second insertion port 200b include the first insertion port 200a.

[0107] Figure 9 (b) is another example of the appearance of the charging device 100. Multiple insertion ports 200, including a first insertion port 200a and a second insertion port 200b, are provided in the inclined surface of the housing 102 of the charging device 100. Charging accessories 250 are installed in all the insertion ports 200, and a battery pack 300 is installed in each charging accessory 250. That is, in Figure 9 In (b), the second insertion port 200b is not equipped with the verification accessory 260.

[0108] Figure 9 (c) is yet another example of the appearance of the charging device 100. Figure 9 The shape of the housing 102 of the charging device 100 in (c) is similar to Figure 9 The charging device 100 in (a)-(b) has a cylindrical shape, while the housing 102 in (a)-(b) has a different shape. The housing 102 of the charging device 100 has multiple insertion ports 200, including a first insertion port 200a and a second insertion port 200b. A verification accessory 260 is installed in the second insertion port 200b. Charging accessories 250 are installed in the insertion ports 200 other than the second insertion port 200b, and a battery pack 300 is installed in each charging accessory 250. The insertion ports 200 other than the second insertion port 200b include the first insertion port 200a. A portion of the battery pack 300 installed in the charging accessory 250 protrudes from the housing 102. Furthermore, the battery pack 300 is inclined relative to the surface of the housing 102.

[0109] According to this embodiment, the shape of the insertion port 200 is common, and the shape of the accessories is common, so accessories corresponding to the function can be used. Furthermore, since accessories corresponding to the function are used, the charging device 100 can operate efficiently. Also, since the shape of the insertion port 200 is common, and the shape of the accessories is common, the position of the accessories can be freely set. Furthermore, since the battery pack 300 is inclined relative to the surface of the housing 102, the battery pack 300 can be easily removed. Moreover, since accessories can be removed from the front of the housing 102, even after the housing 102 is set in a fixed position, the type or quantity of accessories can be arbitrarily changed. Accessories can also be easily replaced in case of failure.

[0110] The following is a summary of one aspect of the present disclosure. A charging device (100) of the present disclosure includes: a first insertion port (200a) and a second insertion port (200b), disposed in a housing (102) and having a common dimension; a first connection interface (210a), disposed inside the first insertion port (200a); a second connection interface (210b), disposed inside the second insertion port (200b); and a control unit (120), connected to the first connection interface (210a) and the second connection interface (210b). A charging accessory (250) is installed in the first insertion port (200a). The charging accessory (250) has a slot (110) for installing and removing a battery pack (300), and the battery pack (300) is charged when it is installed in the slot (110). A first connection interface (210a) is connected to the charging accessory (250) installed in the first insertion port (200a). The control unit (120) causes the charging accessory (250) connected to the first connection interface (210a) to perform a charging process. A device with common features to the charging accessory (250) can be installed in the second insertion port (200b). The size of the accessory and the accessory capable of performing a different function from the charging accessory (250), and the charging accessory (250), the second connection interface (210b) is connected to the accessory when the accessory is connected to the second insertion port (200b), and is connected to the charging accessory (250) when the charging accessory (250) is connected to the second insertion port (200b). The control unit (120) enables the accessory to perform its function when the accessory is connected to the second connection interface (210b), and enables the charging accessory (250) to perform charging processing when the charging accessory (250) is connected to the second connection interface (210b).

[0111] Alternatively, a portion of the battery pack (300) housed in the charging accessory (250) may protrude from the housing (102), and the battery pack (300) may be tilted relative to the surface of the housing (102).

[0112] Alternatively, the accessory can perform a user verification function, and if the verification result of the user is successful, the control unit (120) allows the user to use the charging accessory (250) installed in the first insertion port (200a).

[0113] Accessories may also include a control unit (120).

[0114] (Example 5)

[0115] Next, Embodiment 5 will be described. Similar to the above, Embodiment 5 relates to a charging system capable of renting out multiple battery packs for charging in a charging device. Furthermore, similar to Embodiment 4, Embodiment 5 relates to a charging device 100 having an insertion port 200 for attaching and detaching accessories. Here, the description will focus on the differences from the above.

[0116] Figure 10 (a)-(f) are perspective views showing the appearance of the charging device 100. Figure 10 Image (a) shows the structure of the housing 102 of the charging device 100. Figure 10 In (a), the box 102 is placed longitudinally, and the first insertion port 200a to the fourth insertion port 200d are arranged in the vertical direction. Figure 10 (b) shows that it will be with Figure 10 (a) The case where the same housing 102 is placed horizontally. In this case, the first insertion port 200a to the fourth insertion port 200d are arranged in the left-right direction. That is, the housing 102 can be arranged in a longitudinal and transverse direction with different arrangements of the first insertion port 200a and the second insertion port 200b relative to the vertical direction. The longitudinal direction is referred to as the first direction, and the transverse direction is referred to as the second direction. Here, each insertion port 200 has the same shape regardless of whether the housing 102 is arranged in the longitudinal or transverse direction. For example, the opening of the insertion port 200 has a square shape. In addition, the connection IF210 provided in each insertion port 200 can be rotated, and the connection IF210 faces the same direction regardless of whether the housing 102 is arranged in the longitudinal or transverse direction.

[0117] Figure 10 (c) is a perspective view showing the structure of the charging accessory 250. The charging accessory 250 has a slot 110. The structure of the slot 110 is similar to... Figure 3 Similar to (a)-(c), a terminal 112 is provided inside. The charging accessory 250 has a shape that allows it to be inserted into the insertion port 200, regardless of whether the housing 102 is positioned in the longitudinal or transverse direction. Figure 10 (d) is a perspective view showing the structure of the battery pack 300. The battery pack 300 has the same... Figure 3 The same structure as (a)-(c) has protrusions 320 on both sides. Battery pack 300 and... Figure 3 Similarly, (a)-(c) can be inserted into the slot 110 of the charging accessory 250. Figure 10 (e) is a perspective view showing the structure of the verification accessory 260. The verification accessory 260 has a shape that allows it to be inserted into the slot 110. Furthermore, the verification accessory 260 has protrusions 320 on both sides. A charging accessory 250 is installed in the insertion port 200, and the verification accessory 260 is installed in the slot 110 of the charging accessory 250.

[0118] Figure 10 (f) is a perspective view showing other structures of the verification accessory 260. The verification accessory 260 has the same external shape as the charging accessory 250, so it can be directly inserted into the insertion port 200 regardless of whether the housing 102 is positioned in the longitudinal or transverse direction. That is, when using... Figure 10 In the case of verification accessory 260 of (f), charging accessory 250 is no longer needed.

[0119] According to this embodiment, the insertion port 200 has the same shape regardless of whether the housing 102 is placed vertically or horizontally, thus increasing the freedom of arrangement of the housing 102. Furthermore, the increased freedom of arrangement of the housing 102 enables the charging device 100 to operate efficiently.

[0120] The following is a summary of one aspect of this disclosure. The housing (102) can be positioned in a first direction and a second direction, where the first insertion port (200a) and the second insertion port (200b) are arranged in different directions relative to the vertical direction. The first insertion port (200a) and the second insertion port (200b) can have the same shape regardless of whether the housing (102) is positioned in the first direction or the second direction. The charging accessory (250) installed in the first insertion port (200a) faces the same direction regardless of whether the housing (102) is positioned in the first direction or the second direction. Similarly, the accessory installed in the second insertion port (200b) and the charging accessory (250) both face the same direction regardless of whether the housing (102) is positioned in the first direction or the second direction.

[0121] (Example 6)

[0122] Next, Embodiment 6 will be described. Embodiment 6 shows various shapes of the charging device 100 described above. The processing of the charging device 100 is the same as described above. Here, the description will focus on the differences from the above.

[0123] Figure 11 (a)-(c) are perspective views showing the appearance of the charging device 100. Figure 11 The housing 102 of (a) has a similar structure to Figure 9 (a)-(b) are also inclined surfaces. In addition, the battery pack 300 is installed in a way that it is laid down at an angle relative to the inclined surface. Figure 11 (b) The housing 102 has a wall shape, and a plurality of battery packs 300 are arranged on the upper part of the housing 102. Figure 11 (c) box 102 and Figure 11 The housing 102 of (a) also has a sloping surface, but the battery pack 300 is arranged like a stepped jar.

[0124] Figure 12 (a)-(b) are perspective views showing the appearance of the other charging device 100. Figure 12 The enclosure 102 of (a) has a three-level common platform between its two feet. In addition, multiple battery packs 300 are arranged on the common platform. Figure 12 (b) Box 102 and Figure 12 Compared to the housing 102 of (a), the common surface of the platform is tilted. The battery pack 300 is installed on the tilted surface.

[0125] According to this embodiment, the degree of freedom of the battery pack 300 structure can be increased.

[0126] (Example 7)

[0127] Next, Embodiment 7 will be described. Embodiment 7, like the one described above, relates to a charging and discharging device capable of loading and unloading multiple battery packs. The structure described above is for reducing problems such as misuse by users renting battery packs and theft of battery packs. However, depending on the location where the charging and discharging device is installed, there are situations where the occurrence of such problems can be disregarded. In such cases, the structure for reducing the occurrence of problems may become redundant. The purpose of this embodiment is to address both situations where the occurrence of problems can be disregarded and situations where the occurrence of problems must be considered. Furthermore, in the event of a power outage, it is necessary to remove the battery packs loaded in the charging and discharging device. This embodiment also aims to address this. Here, the differences from the above will be the focus of the explanation.

[0128] Figure 13 The structure of the charging / discharging device 600 is shown. The charging / discharging device 600 includes a slot 110, a terminal 112, a notification unit 150, a locking unit 160, and... Figure 1 Similarly, the battery pack 300 is also... Figure 1 Similarly, the charging / discharging device 600 includes a first charging / discharging circuit 614a to a fifth charging / discharging circuit 614e, collectively referred to as charging / discharging circuit 614; a first control circuit 620a to a fifth control circuit 620e, collectively referred to as control circuit 620; a first communication circuit 640a to a fifth communication circuit 640e, collectively referred to as communication circuit 640; and a first connector 650a and a second connector 650b, collectively referred to as connector 650. Figure 1 Network 10, server 20, and power system 30 are omitted.

[0129] The charging / discharging device 600 is installed in a location where only a limited number of users are present. Therefore, there is no need to consider theft of the battery pack 300 housed in the charging / discharging device 600. In this case, the charging / discharging device 600 requires a simple structure, and the battery pack 300 needs to be easy to install and remove without requiring verification.

[0130] The charging device 100 has multiple slots 110 that serve as loading and unloading ports for multiple battery packs 300. Each slot 110 has a terminal 112 for connecting to a battery pack 300. A charging / discharging circuit 614 is connected to each terminal 112. Similar to the aforementioned charging circuit 114, the charging / discharging circuit 614 charges one or more battery packs 300 installed in a slot 110 via the terminal 112. The charging power in the charging / discharging circuit 614 is supplied from the power system 30 (not shown) via a first connector 650a. The charging process in the charging / discharging circuit 614 can use known techniques, and therefore its description is omitted here.

[0131] A control circuit 620 is connected to a terminal 112 and a charging / discharging circuit 614. For example, a first control circuit 620a is connected to the first terminal 112a and the first charging / discharging circuit 614a. The first control circuit 620a controls the first slot 110a but not the second slots 110b to the fifth slots 110e. The first control circuit 620a communicates with the BMU 310 of the first battery pack 300a via the first terminal 112a to manage whether the first battery pack 300a is installed in the first slot 110a and, if so, the remaining capacity of the first battery pack 300a. The other control circuits 620 are similar. Therefore, the control circuit 620 controls the corresponding slots 110.

[0132] For each control circuit 620, a communication circuit 640 is connected. For example, the first control circuit 620a is connected to the first communication circuit 640a. Furthermore, the first connector 650a, the first communication circuit 640a, the second communication circuit 640b, the third communication circuit 640c, the fourth communication circuit 640d, the fifth communication circuit 640e, and the second connector 650b are connected in sequence. For example, the first connector 650a is connected to network 10 (not shown), power system 30 (not shown), etc. Therefore, each communication circuit 640 can communicate with server 20 (not shown) via network 10.

[0133] Control circuit 620 controls the locking portion 160 of the corresponding slot 110. For example, first control circuit 620a controls the locking / unlocking of first locking portion 160a. Figure 13As shown, when a battery pack 300 is installed in each slot 110, each control circuit 620 maintains the unlocked position of the locking part 160. That is, the first control circuit 620a maintains the unlocked position of the first battery pack 300a installed in the first slot 110a. The other control circuits 620 are the same. With this configuration, when receiving power from the power system 30, the battery pack 300 is charged by installing it in the slot 110. On the other hand, when the power system 30 is de-energized, the locking part 160 is unlocked, so the battery pack 300 can be removed from the slot 110 and used.

[0134] Figure 14 Other structures of the charging / discharging device 600 are shown. The structure of the charging / discharging device 600 is similar to... Figure 13 The configuration is the same, but the management pack 700 is installed in the fifth slot 110e instead of the fifth battery pack 300e. The slot 110 for installing the management pack 700 is not limited to the fifth slot 110e. The management pack 700 includes a backup battery 710, a control unit 720, and a communication IF 730. The charging and discharging device 600 is installed in a convenience store or similar facility, similar to that in Embodiment 1. Therefore, theft of the battery pack 300 installed in the charging and discharging device 600 needs to be considered. Furthermore, the charging and discharging device 600 requires the ability to remove the battery pack 300 even in the event of a power outage in the power system 30.

[0135] The communication IF730 of the management package 700, like the communication IF130 mentioned above, is a card reader capable of communicating with the contactless IC card 400. The communication IF730 receives verification information from the IC card 400 through communication with it. The communication IF730 is connected to the control unit 720 and outputs the verification information to the control unit 720. The control unit 720 generates a verification request including the verification information received from the communication IF730 and outputs the generated verification request to the fifth communication circuit 640e via the fifth terminal 112e and the fifth control circuit 620e. The fifth communication circuit 640e sends the verification request to the server 20 via the network 10.

[0136] After receiving the verification result from the server 20, the fifth communication circuit 640e outputs the verification result to the control unit 720. The control unit 720 receives the verification result from the fifth communication circuit 640e. If the verification result indicates failure, the control unit 720 terminates the process. If the verification result indicates success, the control unit 720 selects one of the battery packs 300 installed in the first slot 110a to the fourth slot 110d. For example, similarly to the control unit 120, the control unit 720 selects the battery pack 300 with the most remaining capacity. At this time, the control unit 720 notifies the remaining capacity of the battery pack 300 from each control circuit 620. The control unit 720 determines the slot 110 where the selected battery pack 300 is installed as the "removable slot 110". When the removable slot 110 is, for example, the first slot 110a, the control unit 720 instructs the first control circuit 620a to remove the item via the fifth terminal 112e, the fifth communication circuit 640e, the fourth communication circuit 640d, the third communication circuit 640c, the second communication circuit 640b, and the first communication circuit 640a.

[0137] After receiving a removal instruction from the control unit 720, the first control circuit 620a illuminates the first notification unit 150a, for example, with a white light. After notifying the removable slot 110 of this illumination, the first control circuit 620a enables the removal of the first battery pack 300a from the first slot 110a. At this time, the first control circuit 620a unlocks the first locking unit 160a. The same process is performed when the removable slot 110 is not the first slot 110a. Furthermore, the process for enabling the insertion of the battery pack 300 into the slot 110 is also performed in the same manner as described above.

[0138] Therefore, the control unit 720 of the management package 700 installed in the fifth slot 110e instructs the first control circuit 620a to lock / unlock the first battery pack 300a installed in the first slot 110a. Furthermore, the first control circuit 620a controls the locking / unlocking of the first battery pack 300a installed in the first slot 110a according to the instruction from the control unit 720. When the management package 700 is installed in the fifth slot 110e and receives power from the power system 30, the fifth control circuit 620e controls the charging of the backup battery 710 built into the management package 700. The backup battery 710 is a storage battery.

[0139] In the event of a power outage in the power system 30, the management package 700, while operating with power from the backup battery 710, instructs the fifth charge / discharge circuit 614e to control the discharge of the fifth charge / discharge circuit. Therefore, the fifth control circuit 620e controls the discharge of the backup battery 710. The discharge power is supplied from the fifth charge / discharge circuit 614e to the fourth charge / discharge circuit 614d, the third charge / discharge circuit 614c, the second charge / discharge circuit 614b, and the first charge / discharge circuit 614a. The first control circuit 620a, based on the power supplied from the management package 700, controls the locking / unlocking of the first battery pack 300a installed in the first slot 110a.

[0140] In this situation, the communication IF730 of the management package 700, through communication with the IC card 400, performs locking / unlocking of the first slot 110a in the same manner as described above. As a result, even in the event of a power outage in the power system 30, the first battery pack 300a can be retrieved from the first slot 110a. The same procedure is performed on the other slots 110 and the other battery packs 300.

[0141] Figure 15 The diagram shows the structure connecting two charging / discharging devices 600. It is a... Figure 14 The charging and discharging device 600 shown serves as the first charging and discharging device 600a, which... Figure 13 The charging / discharging device 600 shown is a second charging / discharging device 600b connected via a communication line 660. The first connector 650a of the first charging / discharging device 600a is connected to the network 10, power system 30, etc., and the second connector 650b of the first charging / discharging device 600a is connected to the second charging / discharging device 600b via the communication line 660. Furthermore, the first connector 650a of the second charging / discharging device 600b is connected to the first charging / discharging device 600a via the communication line 660. Here, the first charging / discharging device 600a has a management package 700 installed, but the second charging / discharging device 600b does not. The management package 700 of the first charging / discharging device 600a also controls the battery pack 300 installed in the second charging / discharging device 600b via the communication line 660.

[0142] The packs installed in the charging and discharging device 600 are not limited to the battery pack 300 and the management pack 700, and may also have other functions.

[0143] According to this embodiment, when the management package 700 is installed, the management package 700 controls the locking part 160 to lock / unlock each slot 110. When the management package 700 is not installed, the locking part 160 remains unlocked over each slot 110. Therefore, it can handle both situations where problems can be ignored and situations where problems must be considered. Furthermore, since the locking part 160 remains unlocked over each slot 110 even when the management package 700 is not installed, the battery pack 300 can be removed even during a power outage. Additionally, when the management package 700 is installed, during a power outage, power is supplied to the other slots 110 from the backup battery 710 of the management package 700, thereby enabling the removal of the battery pack 300.

[0144] One aspect of this disclosure is as follows. Another aspect of this disclosure is a charging / discharging device (600). This device includes: a first tank (110a) for loading and unloading a first battery pack (300a); a first control unit (620a) for controlling the charging of the first battery pack (300a) loaded in the first tank (110a); a second tank (110b) for loading and unloading a second battery pack (300b); and a second control unit (620b) for controlling the charging of the second battery pack (300b) loaded in the second tank (110b). When the management package (700) is installed in place of the second battery pack (300b) in the second slot (110b), the management package (700) instructs the first control unit (620a) to lock / unlock the first battery pack (300a) installed in the first slot (110a). The first control unit (620a) controls the locking / unlocking of the first battery pack (300a) installed in the first slot (110a) according to the instruction from the management package (700). When the second battery pack (300b) is installed in the second slot (110b), the first control unit (620a) keeps the first battery pack (300a) installed in the first slot (110a) unlocked. When the second battery pack (300b) is installed in the second slot (110b), the second control unit (620b) keeps the second battery pack (300b) installed in the second slot (110b) unlocked.

[0145] Alternatively, the second control unit (620b) controls the charging of the battery built into the management package (700) when the management package (700) is installed in the second slot (110b) and receives power from the power system (30), while the first control unit (620a) controls the charging of the first battery pack (300a) installed in the first slot (110a) according to the power supplied from the power system (30) when the management package (700) is installed in the second slot (110b) and receives power from the power system (30). The second control unit (620b) controls the discharge of the battery (710) built into the management package (700) when the management package (700) is installed in the second slot (110b) and the power system (30) is de-energized. The first control unit (620a) controls the locking / unlocking of the first battery pack (300a) installed in the first slot (110a) according to the power supplied from the management package (700) when the management package (700) is installed in the second slot (110b) and the power system (30) is de-energized.

[0146] The present disclosure has been described above based on embodiments. Those skilled in the art should understand that these embodiments are illustrative, and various modifications can be made to the combination of these constituent elements or processing techniques, and such modifications are also within the scope of this disclosure. For example, this disclosure primarily illustrates a charger and a charge / discharger capable of charging a battery pack 300, but embodiments 1 to 7 can also be applied to machines that only have a discharging function.

[0147] In embodiments 4 and 5, charging accessory 250 and verification accessory 260 are shown as examples of accessories. However, they are not limited to these, and other accessories may be used for example. Figure 16 (a)-(b) show the structure of the modified charging device 100. Figure 16 (a) is a perspective view of the charging device 100 viewed from the front. Figure 16 (b) is a perspective view of the charging device 100 as seen from the rear. The charging / discharging device 600 is equivalent to... Figure 9 (a)-(c) Figure 10 The charging device 100 in (a)-(b). The insertion port 200 of the charging device 100 allows for the attachment and removal of a peripheral slot 202. The peripheral slot 202, for example, corresponds to... Figure 10 (c) Charging accessory 250.

[0148] For slot 110 of peripheral slot 202, verification accessory 260, display accessory 270, and AC accessory 280 can be installed and removed. Display accessory 270 has a display unit on the front side and a power supply unit on the rear side. Display accessory 270 operates by power supply from power system 30 connected to charging device 100. Alternatively, display accessory 270 can also operate by power supply from battery pack 300 inserted in slot other than the slot in charging device 100 where display accessory 270 is installed. AC accessory 280 has an inverter inside that converts direct current to alternating current. AC accessory 280 can output power stored in battery pack 300 inserted in slot other than AC accessory 280. According to this modified example, the degree of structural freedom can be increased.

[0149] Any combination of Examples 1 to 7 is effective. According to this variation, the effect of any combination of Examples 1 to 7 can be obtained.

[0150] Industrial availability

[0151] According to this disclosure, the charging and discharging device can operate efficiently.

[0152] Explanation of reference numerals in the attached figures

[0153] 10 Network, 20 Server, 30 Power System, 100 Charging Device, 102 Cabinet, 110 Slot, 112 Terminal, 114 Charging Circuit, 120 Control Unit, 122 Acquisition Unit, 130 Communication IF, 140 Communication Unit, 150 Notification Unit, 160 Locking Unit, 162 Front Locking Unit, 164 Inner Locking Unit, 200 Insertion Port, 210 Connection IF, 250 Charging Accessories, 260 Verification Accessories, 270 Display Accessories, 280 AC Accessories, 300 Battery Pack, 310 BMU, 320 Protrusion, 400 IC Card, 500 Personnel, 1000 Charging System.

Claims

1. A charging and discharging device, comprising: The first and second insertion ports are located within the housing and share a common dimension. The first connection interface is located inside the first insertion port. The second connection interface is located inside the second insertion port, and The control unit is connected to the first connection interface and the second connection interface; A charging accessory is installed at the first insertion port, which has a slot for installing and removing a battery pack, and charges the battery pack when it is installed in the slot. The first connection interface is connected to the charging accessory installed in the first insertion port. The control unit causes the charging accessory connected to the first connection interface to perform a charging process. The second insertion port can accommodate a second accessory that shares the same dimensions as the charging accessory and is capable of performing a different function from the charging accessory, as well as any of the charging accessories. When the second insertion port is connected to the second accessory, the second connection interface is connected to the second accessory; when the second insertion port is connected to the charging accessory, the second connection interface is connected to the charging accessory. When the second accessory is connected to the second connection interface, the control unit causes the function of the second accessory to be executed. When the charging accessory is connected to the second connection interface, the control unit causes the charging accessory to perform a charging process.

2. The charging and discharging device according to claim 1, The housing can be positioned in a first direction and a second direction, where the arrangement directions of the first insertion port and the second insertion port relative to the vertical direction are different from each other. Regardless of whether the housing is positioned in the first direction or the second direction, the first insertion port and the second insertion port have the same shape. Regardless of whether the housing is positioned in the first direction or the second direction, the charging accessories installed in the first insertion port all face the same direction. Regardless of whether the housing is positioned in the first direction or the second direction, either the second accessory installed in the second insertion port or the charging accessory faces the same direction.

3. The charging and discharging device according to claim 1 or 2, A portion of the battery pack, which is installed in the charging accessory, protrudes from the housing, and the battery pack is tilted relative to the surface of the housing.

4. The charging and discharging device according to claim 1 or 2, The second accessory is capable of performing user verification functions. If the user's verification result indicates success, the control unit allows the user to use the charging accessory installed in the first insertion port.

5. The charging and discharging device according to claim 1 or 2, The second accessory includes the control unit.

6. The charging and discharging device according to claim 1 or 2, The charging and discharging device includes a charging device capable of charging only, a discharging device capable of discharging only, and a charging and discharging device capable of both charging and discharging.

7. A charging and discharging device, comprising: The first slot is for installing and removing the first battery pack. A first control unit controls the charging of the first battery pack that is inserted into the first slot. The second slot allows for the installation and removal of a second battery pack, and The second control unit controls the charging of the second battery pack that is installed in the second slot; When the management package is installed in the second slot instead of the second battery pack, the management package instructs the first control unit to lock / unlock the first battery pack installed in the first slot. The first control unit controls the locking / unlocking of the first battery pack inserted into the first slot according to the instructions from the management package. When the second battery pack is inserted into the second slot, the first control unit keeps the first battery pack inserted into the first slot unlocked. When the second battery pack is inserted into the second slot, the second control unit keeps the second battery pack inserted into the second slot unlocked.

8. The charging and discharging device according to claim 7, When the management package is installed in the second slot and receives power from the power system, the second control unit controls the charging of the battery built into the management package. When the management package is installed in the second slot and receives power from the power system, the first control unit controls the locking / unlocking of the first battery pack installed in the first slot based on the power supplied from the power system. When the management package is installed in the second slot and the power system is down, the second control unit controls the discharge of the battery built into the management package. When the management package is installed in the second slot and the power system is de-energized, the first control unit controls the locking / unlocking of the first battery pack installed in the first slot based on the power supplied from the management package.

9. The charging and discharging device according to claim 7 or 8, The charging and discharging device includes a charging device capable of charging only, a discharging device capable of discharging only, and a charging and discharging device capable of both charging and discharging.

10. A charging device, comprising: Multiple slots allow for the installation and removal of multiple battery packs. The charging circuit, when one or more of the plurality of slots contain the battery pack, charges one or more of the battery packs that are installed therein. The acquisition unit acquires the verification results for the user of the battery pack. The notification unit, upon receiving a successful verification result from the acquisition unit, notifies the other unit that a slot containing one of the charged battery packs is a removable slot, and notifies the other unit that a slot without a battery pack is an insertable slot. The control unit, after the notification unit notifies the removable slot and the insertable slot, enables the battery pack to be removed from the removable slot and enables the battery pack to be inserted into the insertable slot. Upon successful verification, the control unit prohibits the battery pack from being inserted into the insertable slot or from being further removed from a slot other than the removable slot after the battery pack has been removed from the removable slot; and prohibits the battery pack from being removed from the removable slot or from being further inserted into a slot other than the removable slot after the battery pack has been inserted into the insertable slot.

11. The charging device according to claim 10, If the verification result obtained by the acquisition unit indicates success, and if there is no charged battery pack, the notification unit will not notify the removable slot. If the notification unit does not notify the removable slot, the control unit keeps the removal of the battery pack in a non-removable state.

12. The charging device according to claim 10, If the verification result obtained by the acquisition unit indicates success, and there is no slot where the battery pack is not installed, then the notification unit will not notify the slot that can be installed. If the notification unit does not notify the insertable slot, the control unit will keep the insertion of the battery pack in a non-insertable state.

13. The charging device according to claim 10, If, within a certain period after the notification unit notifies the removable slot and the insertable slot, no battery pack is removed from the removable slot or inserted into the insertable slot, the control unit returns the removal of the battery pack from the removable slot and the insertion of the battery pack into the insertable slot to a state where they cannot be performed.

14. The charging device according to any one of claims 10 to 13, The acquisition unit also acquires user information related to the user. If the verification result obtained by the acquisition unit indicates success, and if there are multiple charged battery packs, the notification unit selects one of the multiple charged battery packs according to the user information and notifies the user that the slot containing the selected battery pack is a removable slot. If there are multiple slots without battery packs installed, the notification unit selects one of the multiple slots without battery packs installed according to the user information and notifies the user that the selected slot is an insertable slot.

15. The charging device according to any one of claims 10 to 13, The acquisition unit also acquires information about the user's past usage records of the battery pack. If the verification result obtained by the acquisition unit indicates success, and if there are multiple charged battery packs, the notification unit selects one of the multiple charged battery packs based on the information recorded in the utilization record, and notifies the unit that a slot containing the selected battery pack is a removable slot.

16. The charging device according to any one of claims 10 to 13, Each of the plurality of slots has a locking mechanism that prevents it from protruding into the slot in a first state and protrudes into the slot in a second state. When the control unit enables the removal or insertion of the battery pack, the locking mechanism enters the first state. When the control unit sets the removal of the battery pack to be prohibited, the locking mechanism enters the second state and engages with the battery pack. When the control unit sets the insertion of the battery pack to be impossible, the locking mechanism enters the second state to prevent the battery pack from entering.

17. A charging system, which is a charging system connected to a plurality of charging devices as described in any one of claims 10 to 16. When the verification result is obtained by the acquisition unit of one of the multiple charging devices, the removable slot and the insertable slot are selected from the charging devices adjacent to the charging device and the charging device itself.

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