Device for measuring the quantity of charge remaining in at least one battery, fluid and/or thermal energy meter including such a measurement device, and clipper module

A device for measuring the quantity of charge remaining in at least one battery, the device comprising:

• a switch-mode DC current-DC current converter configured for converting an input voltage coming from the at least one battery into an output voltage and supplying a pulse-train signal at an additional output, said DC current-DC current converter being configured for extracting a quantity of charge from the at least one battery for a measurement duration corresponding to a number of pulses of the pulse-train signal;
• a control unit electrically connected to said DC current-DC current converter, said control unit including at least one microcontroller;
• said at least one microcontroller including a counter module having a counter input and said at least one microcontroller including a processing module electrically connected to said counter module;
• a pulse conditioning stage electrically connected to said additional output and to said counter input and being configured for clipping the pulse-train signal in such a manner as to condition the pulse-train signal to be compatible with said counter input;
• said counter module being configured for counting the number of pulses of the pulse-train signal conditioned by said pulse conditioning stage;
• and
• said processing module being configured, at least using the number of pulses obtained by said counter module, for determining the quantity of charge remaining in the at least one battery for a measurement duration.