Abstract: A system includes a storage in which information indicative of a degree of degradation, which is a degree of degradation of each of a plurality of battery packs for rent, is stored. The system also includes an electric reader that acquires information indicative of a first degree of degradation, which is a degree of degradation of a first battery pack, which is a battery pack brought by the user. The system further includes a processor that selects, as a second battery pack rented to the user, a battery pack whose degree of degradation is equal to or lower than the first degree of degradation from among the plurality of battery packs for rent when the second battery pack is rented to the user by exchange between the first battery pack and the second battery pack.

Abstract: A first housing of a first connector is provided with a second guided portion, and a second housing of a second connector is provided with a second guiding portion. The second guided portion and the second guiding portion regulate upward movement of the first connector with respect to the second connector in the up-down direction between a preliminary mated state and a final mated state and in the final mated state. The second housing further has a movable member with a regulating portion. When the movable member is positioned at a locked position, the regulating portion regulates rearward movement of the first housing with respect to the second housing.

Abstract: A storage battery unit includes: a battery module having a plurality of cells, and a module circuit connected to (i) an electric power line and (ii) a communication line; a unit circuit connected to (i) the module circuit by the electric power line and the communication line, and (ii) an electric power conversion device disposed externally; and a casing that accommodates the battery module and the unit circuit. The casing includes a top plate, a bottom plate, and a front plate respectively disposed on a top surface, bottom surface, and front surface of the storage battery unit. The top plate includes a first top plate portion that substantially covers an entirety of the top surface. The front plate includes a first lateral plate portion that substantially covers an entirety of the front surface, and a fixing component. The fixing component is disposed along the first top plate portion.

Abstract: A control method of an information terminal includes acquiring, by a server device via a network, information relating to a device which leases battery packs and exists in an area set by a user, and displaying the acquired information relating to the device on a display screen provided with the information terminal.

Abstract: A first housing of a first connector has a first end wall which is located downward of a first accommodation portion in an up-down direction. When viewed from beneath along the up-down direction, the first end wall hides, in part, a first contact located in the first accommodation portion. A second housing has a second end wall which is located upward of a second accommodation portion in the up-down direction. When viewed from above along the up-down direction, the second end wall hides a second contact located in the second accommodation portion. The first end wall prevents a finger of an operator from coming into contact with the first contact, and the second end wall prevents the finger of the operator from coming into contact with the second contact.

Abstract: In a support member, m×n (n is an integer equal to or larger than 4) cylindrical storage battery cells are arranged in a trefoil formation structure comprised of m (m is an integer equal to or larger than 4) tiers along a first direction. Along a second direction in the support member, n storage battery cells are arranged in a first tier, n+1 storage battery cells are arranged in a second tier, n storage battery cells are arranged in an m?1th tier, and n?1 storage battery cells are arranged in a m-th tier. The n storage battery cells in the first tier are arranged inward of the n+1 storage battery cells in the second tier in the second direction, and the n?1 storage battery cells in the m-th tier are arranged inward of the n storage battery cells in the m-lth tier in the second direction.

Abstract: Storage battery unit is a storage battery unit which is connected to PCS. Storage battery unit includes: storage battery module that includes a plurality of electric cells; first terminal which is connectable to PCS, and capable of outputting electric power from storage battery module to PCS; and second terminal which is connectable to external device, and capable of outputting electric power from storage battery module to external device without passing through PCS.

Abstract: An inner case houses a plurality of storage battery cells. An outer case houses the inner case. A first inner discharge port is provided in the inner case, and an outer discharge port is provided in a lower case. A first discharge path from a first position at the first inner discharge port to a second position and a second discharge path from the second position to a third position at the outer discharge port are provided in a space between the inner case and the outer case.

Abstract: A first connector for electrically connecting a first unit power terminal through a third unit power terminal to a power converter for performing conversion between a DC power and an AC power is mounted to a mounting port. In a status in which the first connector is being removed from the mounting port, it is impossible to mount the first connector to the mounting port while the first unit power terminal through the third unit power terminal are inputting and outputting a DC power, and it is possible to mount the first connector to the mounting port while the first unit power terminal through the third unit power terminal are not inputting and outputting a DC power.

Abstract: A first housing of a first connector has a first end wall which is located downward of a first accommodation portion in an up-down direction. When viewed from beneath along the up-down direction, the first end wall hides, in part, a first contact located in the first accommodation portion. A second housing has a second end wall which is located upward of a second accommodation portion in the up-down direction. When viewed from above along the up-down direction, the second end wall hides a second contact located in the second accommodation portion. The first end wall prevents a finger of an operator from coming into contact with the first contact, and the second end wall prevents the finger of the operator from coming into contact with the second contact.

Abstract: A first housing of a first connector is provided with a second guided portion, and a second housing of a second connector is provided with a second guiding portion. The second guided portion and the second guiding portion regulate upward movement of the first connector with respect to the second connector in the up-down direction between a preliminary mated state and a final mated state and in the final mated state. The second housing further has a movable member with a regulating portion. When the movable member is positioned at a locked position, the regulating portion regulates rearward movement of the first housing with respect to the second housing. A first housing of a first connector is provided with a second guided portion, and a second housing of a second connector is provided with a second guiding portion.

Abstract: A recognition interface recognizes a reverse flow state in which power flows from a customer's site to a power system or a forward flow state in which power flows from the power system to the customer's site. When the recognition interface recognizes a reverse flow state, a controller causes at least one of a first power storage system through a third power storage system to be charged, based on a priority level related to charge defined for the first power storage system through the third power storage system. When the recognition interface recognizes a forward flow state, the controller causes at least one of the first power storage system through the third power storage system 40c to be discharged, based on a priority level related to discharge defined for the first power storage system 40a through the third power storage system.

Abstract: An electricity storage system includes a main body and a portable unit. The main body includes a casing, a first storage battery module that stores power, and a first terminal unit to supply the power. The portable unit includes a second terminal unit and a second storage battery module, and is attachable to and detachable from the first terminal unit. The second terminal unit is electrically connectable to the first terminal unit and receives the power supplied from the main body. The second storage battery module has a storage capacity less than the first storage battery module. The portable unit further includes a charging controller, upon determination of power supply from the system power supply has been stopped, the charging controller controls a charging rate for the second storage battery module to be charged at least one of a normal mode and a high-speed mode.

Abstract: A first connector for electrically connecting a first unit power terminal through a third unit power terminal to a power converter for performing conversion between a DC power and an AC power is mounted to a mounting port. In a status in which the first connector is being removed from the mounting port, it is impossible to mount the first connector to the mounting port while the first unit power terminal through the third unit power terminal are inputting and outputting a DC power, and it is possible to mount the first connector to the mounting port while the first unit power terminal through the third unit power terminal are not inputting and outputting a DC power.

Abstract: A rental system includes a first acquirer that acquires first identification information of a user from a storage device, and a second acquirer that acquires second identification information of a first battery pack for rent from a storage in the first battery pack. The system also includes control circuitry that associates the first and second identification information with each other when the first battery pack is rented to the user, and a storage in which the first and second identification information are stored in association with each other. The second acquirer further acquires information indicative of a state of the first battery pack when the first battery pack is returned from the user, and the control circuitry performs processing for imposing a penalty on the user where it is determined that the first battery pack has abnormality in accordance with the state information of the first battery pack.

Abstract: A storage battery management method, performed by a communication terminal includes: acquiring, from the first storage battery, storage battery information of the first storage battery; storing, in a memory, the acquired storage battery information when the storage battery information is acquired from the first storage battery; receiving a first request from a management server, the first request requesting the communication terminal to transmit first storage battery information to the management server, the first storage battery information being the storage battery information of the first storage battery; and transmitting, when the communication terminal receives the first request from the management server, the first storage battery information to the management server, based on the storage battery information stored in the memory.

Abstract: Storage battery unit is a storage battery unit which is connected to PCS. Storage battery unit includes: storage battery module that includes a plurality of electric cells; first terminal which is connectable to PCS, and capable of outputting electric power from storage battery module to PCS; and second terminal which is connectable to external device, and capable of outputting electric power from storage battery module to external device without passing through PCS.

Abstract: A storage battery unit includes: a battery module having cells, and a module circuit connected to (i) an electric power line for inputting and outputting electric power to and from the cells and (ii) a communication line for inputting and outputting information about the cells; and a unit circuit that is connected to (i) the module circuit by an electric power line and a communication line and (ii) an electric power conversion device disposed externally. The module circuit includes a first terminal that is connected to one end of the electric power line and one end of the communication line, and is disposed at one of a pair of lateral surfaces of storage battery unit that face each other. The unit circuit includes a second terminal that is connected to the electric power conversion device, and is disposed at the other of the pair or lateral surfaces.

Abstract: An electricity-storage system 110a is configured to be able to charge and discharge by connecting a plug to an electrical outlet 140a. Power discharged from the electricity-storage system 110a is monitored by a reverse-power monitoring device 100 and discharge from the electricity-storage system 110a is executed according to instruction from the reverse-power monitoring device 100, in order to avoid reverse power flow to an electrical grid 150.

Abstract: A method of displaying information on a display is provided. The method includes: receiving a request to display, on the display, information indicating whether each of a plurality of battery packs associated with the display, is mounted on a device of a plurality of devices associated with the display; in response to the request, displaying, on a monitor of the display, information indicating whether or not a battery pack of the plurality of battery packs associated with the display is mounted on each device of the plurality of devices associated with the display; receiving a selection of a battery pack from the plurality of battery packs displayed on the display; and in response to the selection of the battery pack, displaying information on the selected battery pack. Each of the plurality of battery packs is mountable on the plurality of devices.