Fuel Cell Apparatus Having a Current Sensor and a Current Sensor for a Fuel Cell Apparatus
A fuel cell apparatus includes at least one busbar for discharging high electrical currents from a high-voltage side of a fuel cell unit and a current sensor that comprises an evaluation electronics unit. A resistance element of the current sensor is integrated in the outgoing electrical conductor.
1 .- 14 . (canceled)
15 . Fuel cell apparatus comprising:
at least one bus bar for discharging high electric currents from a high-voltage side of a fuel cell unit that has a current sensor comprising an electronic evaluation unit; and
a resistance element of the current sensor;
wherein the resistance element is integrated in an outgoing electrical conductor of said at least one bus bar.
16 . The fuel cell apparatus according to claim 15 , wherein the resistance element is welded between two sections of the at least one bus bar.
17 . The fuel cell apparatus according to claim 15 , wherein the electronic evaluation unit is soldered to the resistance element and/or the at least one bus bar.
18 . The fuel cell apparatus according to claim 15 , wherein:
the electronic evaluation unit is arranged on a printed circuit board; and
the printed circuit board is soldered to one of the resistance element and the at least one bus bar.
19 . The fuel cell apparatus according to claim 18 , wherein the printed circuit board is soldered to the resistance element at an edge of the resistance element.
20 . The fuel cell apparatus according to claim 18 , wherein the electronic evaluation unit has an application-specific integrated circuit.
21 . The fuel cell apparatus according to claim 18 , wherein the printed circuit board has metallized connection surfaces for mechanical and electric bonding of at least one of the printed circuit board and the electronic evaluation unit.
22 . The fuel cell apparatus according to claim 21 , wherein the connection surfaces extend through a plurality of levels of the printed circuit board.
23 . The fuel cell apparatus according to claim 21 , wherein through-platings of different sizes extend through a plurality of levels in the printed circuit board.
24 . The fuel cell apparatus according to claim 15 , wherein dc decoupling is provided for the transmission of measuring signals of the electronic evaluation unit from the high-voltage side to a low-voltage side.
25 . The fuel cell apparatus according to claim 24 , wherein an I-coupler is provided for transmission of measuring signals of the electronic evaluation unit.
26 . A current sensor for a fuel cell apparatus, according to claim 15 , wherein the resistance element is constructed for the welding into an outgoing electric conductor.
27 . The current sensor according to claim 26 , wherein an electronic evaluation unit can be soldered at least in areas to at least one of the resistance element and the outgoing electric conductor.
28 . The current sensor according to claim 27 , wherein the electronic evaluation unit is arranged on a printed circuit board, which can be soldered to at least one of the resistance element and the outgoing electrical conductor.