Abstract: The present invention relates to a photovoltaic device (1). The device comprises a solar cell unit (2) comprising a porous light-absorbing layer (3) at a top side (2a), of a porous first conducting layer (4), a porous substrate (5) of an insulating material. The solar cell unit comprises a conducting medium. The photovoltaic device comprises a first conductor (7) in electrical contact with the first conducting layer (4), a second conductor (8) in electrical contact with the second conducting layer (6), and an encapsulation (9) encapsulating the solar cell unit. The encapsulation comprises a top sheet (9a) and a bottom sheet (9b). The first and second conductors (7, 8) are arranged between the encapsulation (9) and the solar cell unit (2) at the bottom side (2b) of the solar cell unit (2).

Abstract: The present disclosure relates to a method performed by battery charger configured to charge a vehicle battery, the method comprising initiating, at a first point in time (t_Bulk_Start), charging of the battery in a bulk charging mode, determining, at a second point in time (t_Bulk_End) subsequent to the first point in time (t_Bulk_Start), that the charging of the battery in the bulk charging mode is completed, estimating, at the second point in time (t_Bulk_End), a state of charge of the battery at the first point in time (t_Bulk_Start) when the charging of the battery in a bulk charging mode was initiated, initiating charging of the battery in a subsequent charging mode using the estimated state of charge (SoC_Bulk_Start), wherein the subsequent charging mode is selected from an absorption charging mode and a float charging mode.

Abstract: The present disclosure relates to a method performed by battery charger configured to charge a vehicle battery, the method comprising initiating, at a first point in time (t_Bulk_Start), charging of the battery in a bulk charging mode, determining, at a second point in time (t_Bulk_End) subsequent to the first point in time (t_Bulk_Start), that the charging of the battery in the bulk charging mode is completed, estimating, at the second point in time (t_Bulk_End), a state of charge of the battery at the first point in time (t_Bulk_Start) when the charging of the battery in a bulk charging mode was initiated, initiating charging of the battery in a subsequent charging mode using the estimated state of charge (SoC_Bulk_Start), wherein the subsequent charging mode is selected from an absorption charging mode and a float charging mode.

Abstract: The present invention relates to a photovoltaic device (1). The device comprises a solar cell unit (2) comprising a porous light-absorbing layer (3) at a top side (2a), of a porous first conducting layer (4), a porous substrate (5) of an insulating material. The solar cell unit comprises a conducting medium. The photovoltaic device comprises a first conductor (7) in electrical contact with the first conducting layer (4), a second conductor (8) in electrical contact with the second conducting layer (6), and an encapsulation (9) encapsulating the solar cell unit. The encapsulation comprises a top sheet (9a) and a bottom sheet (9b). The first and second conductors (7, 8) are arranged between the encapsulation (9) and the solar cell unit (2) at the bottom side (2b) of the solar cell unit (2).