Mobile charging unit, particularly for electric vehicles, and a management system thereof for the delivery of charges on request

1. A mobile charging unit ( 1 ), particularly for one or more electric vehicles ( 4 ), of the type including rechargeable batteries ( 41 ), comprising:

a mobile charging vehicle ( 2 ), and

a charging apparatus ( 3 ), installed on said charging vehicle ( 2 ), having, in turn:

an energy accumulation group ( 5 ), equipped with accumulators ( 51 ) for storing energy for charging said electric vehicles ( 4 );

an inverter unit ( 6 ), connected to said accumulators ( 51 ), comprising a DC-AC-DC converter ( 62 ), for converting the direct current from said accumulators ( 51 ) into alternating current, wherein said inverter unit ( 6 ) is connectable to an alternating-current network ( 9 ) and is adapted to transform the alternating current of said alternating-current network ( 9 ) into direct current for charging said accumulators ( 51 ); and

an internal control system ( 7 ), connected to said inverter unit ( 6 ), adapted to control the operation of said inverter unit ( 6 );

wherein said inverter unit ( 6 ) further comprises:

a direct current bus ( 63 ), connected to said DC-AC-DC converter ( 62 ), and

a DC-DC converter ( 61 ), from direct current into direct current, connected to said direct current bus ( 63 ) and connectable to the rechargeable batteries ( 41 ) of said vehicle ( 4 ),

wherein said DC-DC converter ( 61 ) and said DC-AC-DC converter ( 62 ) comprise a switch ( 67 ) respectively, the switch ( 67 ) of the DC-AC-DC converter ( 62 ) connecting the DC-AC-DC converter ( 62 ) to said alternating-current network ( 9 ) and to said vehicle ( 4 ), and the switch ( 67 ) of the DC-DC converter ( 61 ) connecting the DC-DC converter ( 61 ) to said vehicle ( 4 ),

wherein said accumulators ( 51 ) are connected to said direct current bus ( 63 );

wherein said inverter unit ( 6 ) comprises one or more switches ( 66 ), interposed between said direct current bus ( 63 ) and said accumulators ( 51 ), said switches ( 66 ) being connected to said internal control system ( 7 ); and

wherein said internal control system ( 7 ) is adapted to regulate the operation of said inverter ( 6 ), while charging external batteries and close or open said switches ( 66 ), to uncouple the accumulators ( 51 ) during the charging steps of the rechargeable batteries ( 41 ) of one or more vehicles ( 4 ).

2. The mobile charging unit ( 1 ) according to claim 1 , wherein said internal control system ( 7 ) comprises:

an interface panel ( 71 ) that can be seen by a display, preferably a touch screen display, to highlight charging parameters, and

an interface board ( 72 ), intended to be connected, by means of a cable ( 73 ), to an analogous communication interface board ( 43 ) of said electric vehicle ( 4 ) whose rechargeable batteries ( 41 ) must be charged, for detecting the charge state of said rechargeable batteries ( 41 ), said interface board ( 72 ) being adapted to detect operational information of said charging apparatus ( 3 ), including: information relating to the electric charge and the temperature of said accumulators ( 51 ) and related to the thermal and operating condition of said inverter unit ( 6 ).

3. The mobile charging unit ( 1 ) according to claim 1 , wherein said accumulators ( 51 ) are arranged in a rack configuration.

4. The mobile charging unit ( 1 ) according to claim 1 , further comprising a detection board ( 52 ) for the detection of the charge and discharge states of said accumulators ( 51 ), said detection board ( 52 ) being connected to said internal control system ( 7 ) and being configured to provide operating variables of said accumulators ( 51 ) to said internal control system ( 7 ).

5. The mobile charging unit ( 1 ) according to claim 1 , further comprising connectors ( 8 ) for connecting said inverter unit ( 6 ) to said rechargeable batteries ( 41 ) of said vehicle ( 4 ).