Charging and discharging control of energy devices in a power system
AssigneeEntrantech Inc.
InventorKong-Chen Chen
Life of this patent
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Abstract
A control switch incorporating a 1:2 demultiplexer is used to control timing for a concurrent switching, break-before-make and make-before-break power multiplexing, and is configurable to link a plurality of the control switches into a control chain to perform sequential charging, sequential discharging, parallel charging, parallel discharging, and concurrent sequential charging and discharging for a plurality of batteries coupled to the control chain in a power system.
Claims30
An apparatus for energy switching control, wherein the apparatus comprises a control section and a transfer section, wherein the transfer section comprises:
- a power input port to receive energy;
- a power output port;
- and
- a transfer device adapted to transfer energy from the power input port to the power output port when the transfer device is enabled;
- wherein the control section comprises:
- a control input port to receive an enable input signal;
- a control output port to output an enable output signal;
- a comparator adapted to compare a voltage from an energy device coupled to the apparatus with a reference voltage to generate a comparator output in response;
- and
- a demultiplexer comprising:
- a demultiplexer input coupled to the enable input signal;
- a select control signal generated from the comparator output to enable one of two demultiplexer outputs:
- a positivity output signal generated by ANDing the demultiplexer input with the select control signal;
- and
- a negativity output signal generated by ANDing the demultiplexer input with an inverse of the select control signal;
- wherein
- one of the positivity output signal or the negativity output signal is coupled to the transfer device;
- and
- the other one of the positivity output signal or the negativity output signal is coupled to the enable output signal to enable a second apparatus for energy switching control.
A switching control apparatus using an enable signal to control switching and multiplexing timing to a subsequent apparatus, the switching control apparatus comprises
- an input enable signal to the apparatus;
- an output enable signal;
- a 1:2 demultiplexer;
- a comparator to monitors energy at a device coupled to the switching control apparatus to generate a comparator output as a demultiplexer select control signal to control enable of one of two demultiplexer outputs:
- a positivity output signal generated by ANDing the enable input signal with the comparator output, and
- a negativity output signal generated by ANDing inverse of the enable input signal with the comparator output, wherein
- one of the positivity output signal and the negativity output signal is coupled to the output enable signal to the subsequent apparatus;
- wherein when the input enable signal is asserted and when the comparator output changes state, adjusting delay of the positivity output signal and the negativity output signal enables switching to the subsequent apparatus with a controlled multiplex timing.
Dependencies are inferred from the claim text.