The secondary battery includes an electrolytic solution, a positive electrode and a negative electrode, and the negative electrode includes a plurality of particulate negative electrode active materials, a first negative electrode binder, and a plurality of second negative electrode binders with an average particle size smaller than the plurality of particulate negative electrode active materials. The plurality of particulate negative electrode active materials have an average particle size of 5 μm or more and 30 μm or less. The first negative electrode binder includes one or both of a styrene butadiene rubber and a derivative thereof. The plurality of second negative electrode binders include one or both of a polyvinylidene fluoride and a derivative thereof, and the plurality of second negative electrode binders have an average particle size of 0.1 μm or more and 10 μm or less.

In a vehicle drive system using a motor for cruising, the connection node of serially-connected first and second batteries is grounded. The operation of an inverter is controlled so that the motor drive voltage is higher than the output voltage of each of the first and second batteries. A battery unit is configured so that third and fourth batteries each in a form of a cartridge are removably loaded, and the loaded third battery is connected in parallel with the first battery and the loaded fourth battery is connected in parallel with the second battery.

In a vehicle drive system using a motor for cruising, the connection node of serially-connected first and second batteries is grounded. The operation of an inverter is controlled so that the motor drive voltage is higher than the output voltage of each of the first and second batteries. A battery unit is configured so that third and fourth batteries each in a form of a cartridge are removably loaded, and the loaded third battery is connected in parallel with the first battery and the loaded fourth battery is connected in parallel with the second battery.

The invention relates to an arrangement (100) for active alignment control of a contact element (110) of a charging device (104) for a vehicle (1) for driving on an electrical road system (ERS) comprising a charging surface (3) configured to provide electrical power to the vehicle via the charging device. The arrangement comprises the charging device (104) comprising a base (106), a linkage arm (108), and an electrical contact element (110) and a pivot joint (107) arranged for allowing a movement of the contact element around an axis (105). A control unit is configured to activate an actuator module to align said contact element (110) with said trajectory of said charging surface based on trajectory data and an angle between the vehicle heading and the charging surface. The invention further relates to a method and to a vehicle.

The invention relates to an arrangement (100) for active alignment control of a contact element (110) of a charging device (104) for a vehicle (1) for driving on an electrical road system (ERS) comprising a charging surface (3) configured to provide electrical power to the vehicle via the charging device. The arrangement comprises the charging device (104) comprising a base (106), a linkage arm (108), and an electrical contact element (110) and a pivot joint (107) arranged for allowing a movement of the contact element around an axis (105). A control unit is configured to activate an actuator module to align said contact element (110) with said trajectory of said charging surface based on trajectory data and an angle between the vehicle heading and the charging surface. The invention further relates to a method and to a vehicle.

Systems and methods for managing usage of charging stations. In one embodiment, a system may include a request module, a membership module, and a schedule module. The request module receives a reservation request from an account associated with vehicle. The membership module determines a membership benefit associated with the reservation request. The membership benefit is based on a membership level of the account. The schedule module schedules a charging session based on the reservation request and the membership benefit.

A system and method are disclosed for retrofitting mechanical workover rigs with electric motors to create a hybrid mechanical and electric drive. The process involves the replacement of the combustion engine with one or more electric motors to drive various components of the rig. The retrofit design allows for cleaner, more precise, and more efficient operations while eliminating the need for hydrocarbons as fuel and thus reducing associated greenhouse gas emissions. It also enables the installation of a computer control which, among other benefits, allows more precise control of the rig's operations than is possible with a mechanical transmission. The electric motors may be driven by a battery energy storage system.

A system and method are disclosed for retrofitting mechanical workover rigs with electric motors to create a hybrid mechanical and electric drive. The process involves the replacement of the combustion engine with one or more electric motors to drive various components of the rig. The retrofit design allows for cleaner, more precise, and more efficient operations while eliminating the need for hydrocarbons as fuel and thus reducing associated greenhouse gas emissions. It also enables the installation of a computer control which, among other benefits, allows more precise control of the rig's operations than is possible with a mechanical transmission. The electric motors may be driven by a battery energy storage system.

A control system algorithm is provided for the computer control of a solid-state switching device in a Stirling-electric hybrid vehicle. The algorithm satisfies the demands for electrical energy management, regulation, allocation and distribution to the electrical system of the vehicle during the operation thereof. The control system controls the management, regulation, allocation and distribution of electrical current throughout the vehicle's electrical system in response to the commands of the vehicle operator. This includes the operation of wheel motors, electrical storage systems, the drivetrain and a plurality of other components, accessories and subsystems.

A control system algorithm is provided for the computer control of a solid-state switching device in a Stirling-electric hybrid vehicle. The algorithm satisfies the demands for electrical energy management, regulation, allocation and distribution to the electrical system of the vehicle during the operation thereof. The control system controls the management, regulation, allocation and distribution of electrical current throughout the vehicle's electrical system in response to the commands of the vehicle operator. This includes the operation of wheel motors, electrical storage systems, the drivetrain and a plurality of other components, accessories and subsystems.