Charging and discharging control of energy devices in a power system
AssigneeEntrantech Inc.
InventorKong-Chen Chen
Life of this patent
Estimating the term…
Abstract
A control switch incorporating a 1:2 demultiplexer is used in controlling timing for 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, simultaneous sequential charging and discharging for a plurality of batteries coupled to the control chain in a power system.
Claims59
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 of an energy device with a reference voltage to generate a comparator output;
- an XOR logic gate adapted to receive the comparator output and a function select signal associated with the apparatus to generate an XOR output;
- and
- a demultiplexer comprising:
- a demultiplexer input coupled to the enable input signal;
- a select control signal responsive to the XOR output and to assertion of the enable input signal;
- 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 switching control apparatus for energy switching control.
A power system comprising a plurality of control switches, wherein a control switch of the plurality of switches comprises:
- a control input port to receive an enable input signal;
- a control output port to output an enable output signal;
- a transfer device to transfer energy from a power input port to a power output port when enabled;
- a comparator adapted to compare a voltage derived from an energy device coupled to the control switch to a reference voltage to generate a comparator output;
- and
- a demultiplexer comprising
- a demultiplexer input coupled to the enable input signal,
- a select control signal in response to the comparator output and enable of the enable input signal to assert one of two demultiplexer outputs comprising:
- 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 in the transfer section, and the other one of the positivity output signal or the negativity output signal is coupled to the enable output signal;
- and wherein
- the enable output signal of a (k-1)th one of the plurality of control switches is coupled to the enable input signal of a kth one of the plurality of control switches, wherein k is an integer ranging from 2 to total number of control switches in the plurality of control switches;
- the plurality of control switches form a sequential control chain, wherein a preceding control switch has a higher priority than a succeeding control switch in the sequential control chain;
- and
- the preceding control switch further comprises a control section to control enabling of the transfer device and the subsequent control switch;
- wherein
- an external enable signal is coupled to the enable input signal of a first control switch in the sequential control chain., and
- assertion of the external enable signal to the first control switch enables the sequential control chain.
Dependencies are inferred from the claim text.