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.

A battery module includes at least one battery cell assembly having at least one battery cell; a module case configured to accommodate the at least one battery cell assembly; and an exhaust housing coupled to the module case to cover the at least one battery cell assembly, the exhaust housing having at least one gas discharge hole for discharging a gas inside the module case and at least one flame leak prevention partition for variably adjusting a length thereof.

A battery module includes at least one battery cell assembly having at least one battery cell; a module case configured to accommodate the at least one battery cell assembly; and an exhaust housing coupled to the module case to cover the at least one battery cell assembly, the exhaust housing having at least one gas discharge hole for discharging a gas inside the module case and at least one flame leak prevention partition for variably adjusting a length thereof.

An intelligent energy module of an electrically assisted bicycle includes a battery management system, a controller and a motor. The battery management system includes a battery and an analog front end. The analog front end is electrically connected to the battery assembly. The controller includes a micro controller unit and a driver. The micro controller unit is electrically connected to the analog front end. The driver electrically connected to the micro controller unit. The motor is electrically connected to the driver and controlled by the driver. The battery assembly, the analog front end, the micro controller unit and the driver are disposed on a same circuit board.

A cable that includes a conductor defining a hollow interior, a casing surrounding the conductor, an electrical insulator positioned between the conductor and the casing, and a fluid positioned within the hollow interior of the conductor.

A walk-behind lawnmower including a deck including a shroud, a front end portion, and a plurality of ribs coupled to the front end portion and defining a contact plane, a first motor, a rechargeable battery, and a blade rotatably driven by the first motor about a rotational axis, the blade having a tip defining a blade circle about the rotational axis. A radially inner surface of the shroud is disposed a first distance from a nearest point of the blade circle, the first distance being between 0.12 inches and 0.38 inches, a radially outer surface of the shroud is disposed a second distance from a nearest point of the blade circle, the second distance being between 0.5 inches and 0.75 inches, and the contact plane is disposed a third distance from a nearest point of the blade circle, the third distance being between 1.75 inches and 2.75 inches.

A walk-behind lawnmower including a deck including a shroud, a front end portion, and a plurality of ribs coupled to the front end portion and defining a contact plane, a first motor, a rechargeable battery, and a blade rotatably driven by the first motor about a rotational axis, the blade having a tip defining a blade circle about the rotational axis. A radially inner surface of the shroud is disposed a first distance from a nearest point of the blade circle, the first distance being between 0.12 inches and 0.38 inches, a radially outer surface of the shroud is disposed a second distance from a nearest point of the blade circle, the second distance being between 0.5 inches and 0.75 inches, and the contact plane is disposed a third distance from a nearest point of the blade circle, the third distance being between 1.75 inches and 2.75 inches.

The energy storage system includes battery cells, a subrack, a backplane, and a battery management system BMS. The subrack reserves a plurality of battery cell slots, the battery cells are connected to the backplane through the battery cell slots. The backplane is installed in the subrack, a first power terminal is reserved at a position corresponding to the battery cell slot on the backplane, and a plug-in power terminal is formed by a second power terminal of the battery cell together with the first power terminal. A power circuit, a sampling circuit, and an equalizer circuit are integrated into the backplane, and the power circuit, the sampling circuit, and the equalizer circuit are connected after the second power terminal is plugged and docked with the first power terminal. The BMS is connected to the backplane for managing the energy storage system.

Disclosed are a battery box, a battery cell, a battery, and a method and apparatus for preparing the battery box. The battery box includes a pressure relief region including a first recess arranged at an inner surface of the battery box and a second recess arranged at an outer surface of the battery box, the first recess being arranged opposite to the second recess, wherein a third recess is provided at a bottom wall of the first recess and/or a bottom wall of the second recess, and the pressure relief region is configured to fracture at the third recess, when an internal pressure of the battery box reaches a threshold, to relieve the internal pressure. According to the battery box, the battery cell, the battery, and the method and apparatus for preparing the battery box disclosed in the present application, the pressure relief region is easy to machine.