Control module for DC power network

• US 10,326,284 B2
• Filed: 11/09/2015
• Issued: 06/18/2019
• Est. Priority Date: 11/11/2014
• Status: Active Grant

• Current Assignee: Revision Military Soldier Power, LLC
• Original Assignee: Revision Military Limited (Revision Military)
• Inventors: Long, David N., Dziengeleski, Seth M., McConnell, Gregory D.
• Primary Examiner(s): Diao, M Baye
• Application Number:
  US15/524,826
• Publication Number:
  US 20170338665A1
• Time in Patent Office: 1,317 Days
• Field of Search: 320160
• CPC Class Codes: H02J 13/00002 characterised by monitoring
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0014 Circuits for equalisation of charge between batteries
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/123 the energy generation units being or involving renewable energy sources
• CPC Class Codes: Y04S 10/30 State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge

Abstract

A power distribution and control module includes a digital data processor and associated memory module operating an energy management program or schema and a battery charging manager program thereon. The energy management schema is operable to determine an instantaneous configuration of the power and distribution and control module, to determine total instantaneous input power available, total instantaneous power demand by connected power loads and to allocate a portion of the input power to power the loads. Thereafter any unallocated power is allocated to charge rechargeable batteries using allocation criteria that are situationally variable.

Claims

1. A method for allocating electrical power to a plurality of external power devices connected to a plurality of device ports of a power distribution and control module comprising the steps of:

operating a controller data processor to poll each of the plurality of device ports;

operating the controller data processor to determine an instantaneous configuration of the power distribution and control module that includes determining a device type for each of the plurality of external power devices connected to one of the plurality of device ports wherein the instantaneous configuration includes at least one DC power source and a plurality of rechargeable DC batteries;

determining, by an energy management schema on the controller data processor, a total instantaneous input power available from the at least one DC power source; and

allocating, by the energy management schema on the controller data processor, a portion of the total instantaneous input power to each of the plurality of rechargeable DC batteries according to allocation criteria.

2. The method of claim 1 further comprising the step of determining an instantaneous State of Charge (SoC) for each of the plurality of rechargeable DC batteries.

3. The method of claim 2 further comprising determining an Average State of Charge (ASoC) of all of the rechargeable DC batteries based on the instantaneous State of Charge (SoC) thereof.

4. The method of claim 3 wherein the allocation criteria are configured to allocate the portion of the total instantaneous input power to each of the plurality of rechargeable DC batteries in a manner that tends to equalize the SoC of each of the plurality of rechargeable DC batteries.

5. The method of claim 3 wherein the allocation criteria are configured to allocate the portion of the total instantaneous input power to at least a portion of the plurality of rechargeable DC batteries in unequal portions.

6. The method of claim 4 wherein the allocation criteria are configured to allocate a higher percentage of the total instantaneous input power to rechargeable DC batteries having an instantaneous SoC that is less than the ASoC.

7. The method of claim 4 wherein the allocation criteria are configured to allocate the total instantaneous input power to one or more of the plurality of rechargeable DC batteries that have an instantaneous SoC that is less than the ASoC.

8. The method of claim 3 wherein the allocation criteria are configured to:

allocate more than 50% to the total instantaneous input power to rechargeable DC batteries having an instantaneous SoC that is less than the ASoC; and

to,

allocate the remaining unallocated portion of the total instantaneous input power to each of the rechargeable DC batteries that have an instantaneous SoC that is equal to or greater than the ASoC.

9. The method of claim 3 wherein the plurality of rechargeable DC batteries have a plurality of different charge capacity values further comprising the step of weighting the allocation criteria according to a charge capacity value of each of the plurality of rechargeable DC batteries.

10. The method of claim 1 wherein the instantaneous configuration further comprises one or more DC power loads attached to one or more of the plurality of device ports further comprising steps of;

determining a total instantaneous power demand associated with the one or more DC power loads,

allocating at least a portion of the total instantaneous input power to the one or more DC power loads;

determining a Total Charging Power (TCP) equal to an unallocated portion of the total instantaneous input power;

determining an instantaneous State of Charge (SoC), an operating voltage range and a charge capacity for each of the plurality of rechargeable DC batteries;

determining an Average State of Charge (ASoC) of the plurality of rechargeable DC batteries;

allocating the TCP to one or more of the plurality of rechargeable DC batteries according to the allocation criteria.

11. The method of claim 10 wherein the allocation criteria are configured to allocate a higher percentage of the TCP to rechargeable DC batteries having an instantaneous SoC that is less than the ASoC.

12. The method of claim 11 further comprising the step of weighting the allocation criteria according to a charge capacity value of each of the plurality of rechargeable DC batteries.

13. A power distribution and control module comprising:

a controller data processing device, a controller memory module in communication with the controller data processing device and a controller network interface device in communication with the controller data processing device;

at least one input device port operable to connect with an external DC power device consisting of one of a DC power source and a rechargeable DC battery;

a plurality of output device ports each operable to connect with a different external DC power device consisting of one of a DC power load and a rechargeable DC battery;

a power distribution network operable to receive instantaneous input power from the at least one input device port and to distribute the instantaneous input power to selected at least one of the plurality of output device ports;

operating programs including an energy management schema and a battery charging manager operating on the controller data processing device, wherein the energy management schema is operable to;

poll each device port to determine an instantaneous configuration of the power distribution and control module;

determine a device type for each external power device connected to one of the plurality of device ports;

determine a total instantaneous input power available from the at least one input device port, determine a total instantaneous power demand associated with any DC power loads connected to the plurality of output device ports;

allocate at least a portion of the total instantaneous input power to at least a portion of the total instantaneous power demand associated with any DC power loads connected to the plurality of output device ports;

determine a Total Charging Power (TCP) equal to the unallocated portion of the total instantaneous input power;

allocate the TCP to the one or more of any rechargeable DC batteries connected to the plurality of output device ports according to allocation criteria.

14. The power distribution and control module of claim 13:

wherein the least one input device port comprises a single input device port operable to receive input power from a single external DC power source;

wherein the plurality of output device ports are connected to a plurality of rechargeable DC batteries and no DC power loads;

wherein the energy management schema is further operable to determine an instantaneous State of Charge (SoC) of each of the plurality of rechargeable DC batteries and to determine an average state of charge (ASoC) based on the instantaneous SoCs;

wherein the battery charging manager is operable to allocate the total instantaneous input power to all of the plurality of rechargeable DC batteries connected to the plurality of output device ports according to the allocation criteria;

wherein the allocation criteria are configured to allocate the total instantaneous input power to all of the plurality of rechargeable DC batteries connected to the plurality of output device ports in a manner that tends to equalize the SoC of all of the plurality of rechargeable DC batteries;

wherein the above listed steps are repeated at a frequency of 1 Hz or greater.

15. The power distribution and control module of claim 13 wherein the plurality of output device ports are connected to a plurality of rechargeable DC batteries and to at least one DC power load.