A cell balancing converter of an electric battery, where the battery includes an even number N of cells connected in series, the converter including: - a first circuit called a quasi-resonant circuit, - a second circuit, called a pseudo-control circuit, - a transformer coupling the quasi-resonant circuit to the pseudo-control circuit, and including a primary winding and N/2 secondary windings, where one end of the primary winding is connected to a first terminal of the quasi-resonant circuit, and the other end is connected to a second terminal of the quasi-resonant circuit, the quasi-resonant circuit includes an inductor (L res) connecting said first terminal to a middle-point of a first branch including a first element forming a switch and a second element forming a switch, where said second terminal is connected to the middle-point of a second branch including a first capacitor and a second capacitor, where the first end of the first branch is connected to the first end of the second branch by a first electrical conductor, where the second end of the first branch is connected to the second end of the second branch by a second electrical conductor, and where the electrical conductors power the quasi-resonant circuit by a direct voltage; the elements forming switches of the quasi-resonant circuit include inputs for receiving signals sent by a driving circuit of the quasi-resonant circuit to close or open the elements forming switches; characterized in that: - the pseudo-control circuit include o switching modules which include inputs for receiving signals sent by a driving circuit of the pseudo-control circuit to put the switching modules into an on-state or off-state, each cell of the battery having a switching module connected in series with it, and o a given secondary winding of the transformer closing two electrical circuits, each of which consists of a switching module and a cell, connected in series; - the signals sent by the driving circuit of the pseudo-control circuit are transferred to the reception inputs of the switching modules by high pass filters, where each high-pass filter is an RC filter including a capacitor ( C f) and a resistor ( R f) with a diode installed in parallel with the resistor such that the entire control signal is transmitted. - a first circuit called a quasi-resonant circuit, - a second circuit, called a pseudo-control circuit, - a transformer coupling the quasi-resonant circuit to the pseudo-control circuit, and including a primary winding and N/2 secondary windings, where one end of the primary winding is connected to a first terminal of the quasi-resonant circuit, and the other end is connected to a second terminal of the quasi-resonant circuit, - the pseudo-control circuit include o switching modules which include inputs for receiving signals sent by a driving circuit of the pseudo-control circuit to put the switching modules into an on-state or off-state, each cell of the battery having a switching module connected in series with it, and o a given secondary winding of the transformer closing two electrical circuits, each of which consists of a switching module and a cell, connected in series; o switching modules which include inputs for receiving signals sent by a driving circuit of the pseudo-control circuit to put the switching modules into an on-state or off-state, each cell of the battery having a switching module connected in series with it, and o a given secondary winding of the transformer closing two electrical circuits, each of which consists of a switching module and a cell, connected in series; - the signals sent by the driving circuit of the pseudo-control circuit are transferred to the reception inputs of the switching modules by high pass filters, where each high-pass filter is an RC filter including a capacitor ( C f) and a resistor ( R f) with a diode installed in parallel with the resistor such that the entire control signal is transmitted.