A battery assembly according to an exemplary aspect of the present disclosure includes, among other things, a battery array and a foam shell that surrounds the battery array.

An exemplary assembly includes an extrusion providing a channel that receives a portion of a battery cell frame. The extrusion is securable to a support to secure the battery cell frame relative to the support.

A switch is to switch a connection mode between a serial mode and a parallel mode. In the serial mode, a fuel cell and a power storage device are connected in series and connected to a travelling apparatus in parallel. In the parallel mode, the fuel cell is connected to the travelling apparatus in parallel. A converter is to be turned on to boost a voltage generated by the fuel cell to be applied to the travelling apparatus and to be turned off when the parallel mode is selected. A controller is to control the switch to switch a connection mode to the parallel mode when power to be consumed by the travelling apparatus is lower than a first power threshold, and to switch the connection mode to the serial mode when the power to be consumed by the travelling apparatus is higher than the first power threshold.

Methods, systems and devices are provided for transferring energy between a mobile unit and another discrete unit. One such method involves a mobile unit configured as a vehicle. During this method, energy is stored with an energy storage configured with the vehicle. At least some of the stored energy is transferred from the energy storage to an energy receiver using an energy transmitter, where the vehicle is discrete from the energy receiver.

Disclosed is a method for determining a value of the state of energy of a rechargeable battery in a vehicle, the battery being connected to an electric consumer; the method including: determining the state of charge as a measure of the present capacity of the battery; and determining the state of energy as an indication of at least the remaining charge and discharge energy of the battery. The disclosed method further includes: calculating and determining the value of the state of energy based on at least one parameter which is related to the operation of the electric consumer and where the at least one parameter varies depending on a mode for operating the vehicle or electric consumer during charging or discharging of the battery. Also disclosed is an arrangement for determining a value of the state of energy of a rechargeable battery in a vehicle.

A method manages a power train of a motor vehicle including a heat engine and an electric motor electrically linked to a power battery. The method includes controlling a heating system for heating the power battery according to at least one measurement of a temperature representative of an operation of the heat engine.

A method, applicable in a self-propelled surface-traveling robot (1) system, for returning to a primary charging station, where the robot (1) system comprises a surface-traveling robot (1) and at least two charging stations for charging the robot, comprising the following steps: S1: the robot establishes a map of an area; S2: one of the charging stations is set as the primary charging station and the position of the primary charging station is recorded in the map of the area; and S3: when finishing working, the self-propelled surface-traveling robot (1) returns to the primary charging station according to the position of the primary charging station in the map of the area. In the method, applicable in a self-propelled surface-traveling robot (1) system, for returning to a primary charging station of the present invention, the robot (1) returns to the position of the set primary charging station after it finishes working so that the robot (1) may be found by a user as accustomed at the position of the primary charging station when the robot (1) is not working; and the starting point of the robot (1) for each time working may also be determined, by setting the charging station at an important position where the robot is firstly needed to work as the primary charging station, facilitating arrangement of position for priority work.

A secondary battery includes: a cathode, an anode, and an electrolytic solution including a sulfuric acid compound represented by X.sup.n+[M(Rf).sub.a(CN).sub.b(SO.sub.4).sub.c].sup.m−, where X.sup.n+ is an ion such as a metal ion, M is an element such as a transition metal element, Rf is a group such as a fluorine group, a is an integer of 0 to 4, b is an integer of 0 to 5, c is an integer of 1 to 4, m is an integer of 1 to 3, and n is an integer of 1 or 2. The cathode, the anode, and the electrolytic solution are provided inside a film-like outer package member.

An autonomous travel device is provided with wheels, a device main body, a power source that is provided on one end portion of the device main body within the device main body and causes the device main body to travel autonomously by driving the wheels, a battery for supplying power to the power source, and an accommodation unit for accommodating the battery from the other end portion of the device main body to a central portion of the device main body within the device main body. With this configuration, it is possible to easily perform replacement of the battery, and therefore, it is possible to perform autonomous travel that is stabilized due to disposition of the battery in consideration of the center of gravity of the device main body.

The disclosure relates to an intelligent transportation field. A vehicle-mounted terminal, a charging pile, an electric bicycle, and a rental system and a rental method of the electric bicycle are described. The vehicle-mounted terminal for the electric bicycle comprises: a receiver configured to receive a rental request; and a controller configured to: acquire the performance state of an electric bicycle targeted by the rental request, in response to the rental request; communicate with a server to authenticate the validity of the renter, if the acquired performance state meets preset rental criteria; and issue an unlocking instruction signal to a charging pile to unlock the electric bicycle, if a successful authentication message is received from the server. The vehicle-mounted terminal communicates with the server, so that the back-end server can obtain the service condition of the rented bicycle in real time, and can monitor and manage the bicycle.