The invention relates to a battery shell, in particular a battery shell of a traction battery, the battery shell being formed from plastics material, the battery shell having a fastening system for fastening a component to the battery shell, the fastening system having a guide rail, an inner profile and a fastening element, the guide rail being integrally or interlockingly connected to the battery shell, the inner profile being guided by the guide rail, the fastening element being designed to establish a connection between the component and the inner profile.

A battery pack is provided that includes battery cell magazines and a battery management system to control charging and discharging of the associated battery pack. The battery cell magazines may include a magazine housing and associated battery cells. The magazine housing may define a plurality of battery cell recesses to receive the battery cells. The battery management system may be configured to balance the state of charge of a battery stack of battery packs. Methods for balancing a state of charge of battery packs of a battery stack are also provided, as are systems for lifting a battery stack.

Secondary batteries using lithium cobalt oxide as positive electrode active materials have a problem of a decrease in battery capacity due to repeated charging/discharging, for example. A positive electrode active material particle which hardly deteriorates is provided. In a first step, a container in which a lithium oxide and a fluoride are set is placed in a heating furnace, and in a second step, the inside of the heating furnace is heated in an atmosphere containing oxygen. The heating temperature of the second step is from 750° C. to 950° C., inclusive. By the manufacturing method, fluorine can be contained in the positive electrode active material particle to increase the wettability of the surface of the positive electrode active material so that the surface of the positive electrode active material is homogenized and planarized. The crystal structure of the thus manufactured positive electrode active material is unlikely to be broken in repeated high-voltage charging/discharging. Thus, secondary batteries using the positive electrode active material having such a feature have greatly improved cycle characteristics.

A wiring module to be attached to a plurality of power storage devices arranged in an arrangement direction, the wiring module including: an insulating protector; and a flexible printed wiring board disposed in the protector, wherein the protector has a shape extending in the arrangement direction, the flexible printed wiring board includes a main body part extending in the arrangement direction and disposed in the protector, and an extension piece extending from the main body part, the extension piece has a curved portion that is curved, and the extension piece is inverted by the curved portion, and the protector includes a locking part that locks to the extension piece from a direction to prevent the curved portion from deforming back to an original shape thereof.

A positive electrode active material having a crystal structure that is unlikely to be broken by repeated charging and discharging is provided. A positive electrode active material with high charge and discharge capacity is provided. One embodiment of the present invention is a positive electrode active material containing lithium, cobalt, nickel, and oxygen; in which a molar ratio of lithium, cobalt, and nickel is lithium: cobalt: nickel=1:1−x: x (0.3<x<0.75); in which the average of a bond distance between cobalt and oxygen and a bond distance between nickel and oxygen is longer than or equal to 1.94×10.sup.−10 m and shorter than or equal to 2.1×10.sup.−10 m in a crystal structure of the positive electrode active material; and in which the average of an angle formed between a line connecting cobalt to an adjacent oxygen and a line connecting cobalt to another adjacent oxygen and an angle formed between a line connecting nickel to an adjacent oxygen and a line connecting nickel to another adjacent oxygen is greater than or equal to 86.5° and less than 90°.

A charging device wiredly transmits identification information to a power storage pack after the power storage pack is mounted. The power storage pack transmits via near-field communication a signal including the identification information received from the charging device. The charging device collates whether or not the identification information included in the received signal matches the identification information wiredly transmitted.

A first power storage pack wiredly transmits identification information retained in the first power storage pack to a charging device when the first power storage pack is detached from an electric movable body. The charging device wiredly transmits the identification information received from the first power storage pack to a second power storage pack. The controller of the second power storage pack transmits via near-field communication a signal including the identification information received from the charging device. The electric movable body collates whether or not the identification information included in the received signal matches the identification information retained in the first power storage pack.

The present invention relates to a hybrid power system for a robot or a robotic lawn mower. It comprises at least one generator for generating an electric current; at least one control board being provided to receive the electric current from the generator; and at least one rechargeable battery being connected to and charged by the electric current from the control board, and being charged by the electric current from the generator as well. The generator can he an AC generator or a DC generator, and there may be two generators, and two operation control boards. There are two types of end units, such as a cutting assembly and a moving assembly. At least one of the control boards provides a driving power for driving one of the end units of the robot or the robotic lawn mower, which may be operative under AC or DC. The cutting assembly may include a set of cutting tools and the moving assembly may have a set of moving wheels, which may move in any directions under the control of the control boards.

Provided are a lithium plating detection method, a battery management method and apparatus for safety diagnosis using the lithium plating detection method. The lithium plating detection method according to the present disclosure includes detecting, accumulating and tracking each of an open circuit voltage (OCV) after fully charging and an OCV after fully discharging of a battery every charge/discharge cycle of the battery, and determining if lithium plating took place in the battery using a result of tracking the OCV after fully charging and the OCV after fully discharging, wherein a range satisfying a condition of the reduced OCV after fully charging and the reduced OCV after fully discharging in the tracking result is determined as a range in which lithium plating starts to take place.

A battery module, including battery cells connected in series or connected in series and in parallel, a plurality of bus bars connected to corresponding electrode leads of the battery cells, and a voltage sensing member having sensing parts respectively connected to the bus bars, each of the plurality of bus bars having a pin hole perforated therethrough in a thickness direction, and each of the sensing parts having a solder pin configured to be inserted into and released from the pin hole.