Recharging of a Pool of Batteries

• US 20140167678A1
• Filed: 07/26/2012
• Published: 06/19/2014
• Est. Priority Date: 07/26/2011
• Status: Active Grant

• Current Assignee: Commissariat a L'Energie Atomique (AES Corporation)
• Original Assignee: Commissariat a L'Energie Atomique (AES Corporation)
• Inventors: Guillou, Herv, Ha, Duy Long
• Granted Patent: US 9,401,611 B2
• Time in Patent Office: Days
• US Class Current: 320/101
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy wind motors F03D
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 3/003 Load forecast, e.g. methods or systems for forecasting future load demand
• CPC Class Codes: H02J 3/1885 using rotating means, e.g. synchronous generators
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 3/466 Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0071 with a programmable schedule
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• CPC Class Codes: Y02E 40/30 Reactive power compensation
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

Method for recharging a pool of batteries from a recharging device (10) comprising several recharging terminals (14) supplied electrically from at least one energy production source (11), characterized in that it comprises the following steps:

• • Estimation of the future production of energy, i.e. the predicted energy E_predicted and the predicted power P_predicted(t) as a function of time t, in the course of a reference period by at least one energy production source;
  • Estimation of the energy need Σ_iEi(t)for the recharging of the batteries present in the recharging device;
  • Computation of a dummy power P_dummy which is less than or equal to the predicted power and able to address all or part of this energy need in a dummy period which may or may not be distinct from the reference period;
  • Scheduling of the rechargings of the batteries present in the recharging device over this dummy period.

Claims

1. Method for recharging a pool of batteries from a recharging device comprising several recharging terminals supplied electrically from at least one energy production source, wherein it comprises the following steps:

a. Estimation of the future production of energy, i.e. the predicted energy E_predicted and the predicted power P_predicted(t) as a function of time t, in the course of a reference period by at least one energy production source;

b. Estimation of the energy need Σ

_i Ei(t) for the recharging of the batteries present in the recharging device;

c. Computation of a dummy power P_dummy which is less than or equal to the predicted power and able to address all or part of this energy need in a dummy period which may or may not be distinct from the reference period;

d. Scheduling of the rechargings of the batteries present in the recharging device over this dummy period.

2. Method for recharging a pool of batteries according to claim 1, wherein the dummy energy is computed as a function of the energy need Σ

_i Ei(t), or as a function of the energy need Σ

_i Ei(t) and of the predicted, energy E_predicted and/or of the forecast energy E_carpark of energy consumption of the recharging device over the dummy period.

3. Method for recharging a pool of batteries according to claim 2, wherein the dummy energy E_dummy(t) is defined, at an instant t by the formula:

4. Method for recharging a pool of batteries according to claim 1, wherein the dummy energy E_dummy(t) is defined at an instant t by the formula:

E_dummy(t)=r Σ

_iEi(t) with 0<

r<

2.

5. Method for recharging a pool of batteries according to claim 3, wherein the forecast energy E_carpark is estimated on the basis of statistical data, of energy consumption of the recharging device.

6. Method for recharging a pool of batteries according to claim 1, wherein the predicted energy E_predicted and/or the predicted power P_predicted(t) is estimated by a theoretical and/or empirical computation on the basis of data of weather forecasts and/or on the basis of past measurements of energy production,

7. Method for recharging a pool of batteries according to claim 1, wherein it comprises at an instant t a step of computing an end-of-dummy-period instant 2t₀ for which the predicted energy produced by the energy sources of the recharging device corresponds to a predetermined function of the dummy energy E_dummy through the following equation:

2[∫

₀^t0Ppredicted(u)du]−

∫

₀^tPpredicted(u)du=E_dummy

8. Method for recharging a pool of batteries according to claim 6, wherein it comprises the definition of a dummy power P_dummy(t) at an instant t by:

P_dummy(t)=P_predicted(t) if t≦

t₀,

P_dummy(t)=min [P_predicted(2t₀−

t);

P_predicted(t)]if t₀<

t≦

2t₀

P_dummy(t)=0 if t>

2t₀

9. Method for recharging a pool of batteries according to claim 8, wherein the step of scheduling the rechargings of the batteries present in the recharging device consists in providing for the recharging of ail these batteries between the instants t and at least 2t₀.

10. Method for recharging a pool of batteries according to claim 1, wherein it comprises a prior step of detecting a change of configuration of the car park and a step of new scheduling of the rechargings of the batteries present in the recharging device at each detection of change.

11. Device for recharging a pool of batteries comprising several recharging terminals supplied electrically from at least one energy production source, wherein it comprises a central unit which implements the method for recharging the pool of batteries according to claim 1.

12. Device for recharging a pool of batteries according to claim 11, wherein it comprises a solar energy production source and/or a wind energy production source.

13. Device for recharging a pool of batteries according to claim 11, wherein its recharging terminals are disposed in parking spaces for the recharging of a pool of batteries of electric automotive vehicles,

14. System for recharging a pool of batteries comprising a central Server, wherein the central server is linked to at least one recharging device according to claim 11 by at least one communication means.