BATTERY CHARGING CONTROL DEVICE

• US 20130342015A1
• Filed: 03/01/2012
• Published: 12/26/2013
• Est. Priority Date: 03/11/2011
• Status: Abandoned Application

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Takano, Atsushi, Okino, Kazuhiko, Yamamoto, Naoki, Higuchi, Shinsuke, Iimori, Takashi, Soga, Tsutomu, Nagakura, Hayato
• Application Number:
  US14/003,951
• Publication Number:
  US 20130342015A1
• Time in Patent Office: Days
• US Class Current: 307/38
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 58/27 by heating
• CPC Class Codes: B60R 16/033 characterised by the use of electrical cells or batteries for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/633 characterised by algorithms, flow charts, software details or the like
• CPC Class Codes: H01M 10/657 by electric or electromagnetic means
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 7/0071 with a programmable schedule
• CPC Class Codes: H02J 7/007194 of the battery
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• 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 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

When warming-up of a battery is in progress (S12), a battery charge state at the warming-up start time of the battery is set to a battery hold capacity SOC_hold (S14, S15), and a charge power for the battery is controlled so that a battery charge state SOC is kept at SOC_hold. When a present time is in a timer charge reservation time (S11), the charge power for the battery is controlled so that SOC becomes a full charge state SOC_full (S17). Even if SOC has a tendency to temporarily decrease due to a rapid increase of heater consumption power just after start of warming-up of the battery, by keeping SOC at SOC_hold (SOC=SOC_hold) SOC can reach a full charge state as intended during the timer charge reservation time. A proportion of charge using low-priced midnight power is increased to a maximum then running cost can be suppressed.

Claims

1. A battery charging control device having a battery that can be charged by a designated charge time and a power load that is connected to a charging power system of the battery and is operated by a power supplied through the charging power system when a predetermined condition is satisfied, the battery charging control device comprising:

a charge-state-holding charge power controlling section that, during operation of the power load, when a present time is not in the designated charge time, controls a charge power for the battery so as to keep the charge power for the battery at a predetermined battery charge state that is smaller than a full charge state, and wherein

the charge-state-holding charge power controlling section controls the charge power for the battery so that a battery charge state is kept at the predetermined battery charge state.

2. The battery charging control device as claimed in claim 1, wherein:

the predetermined battery charge state that is smaller than the full charge state is a battery charge state of a time of a power load operation start.

3. The battery charging control device as claimed in claim 1, wherein:

the power load is a heater that controls a temperature of the battery by warming up the battery when the battery temperature becomes less than a predetermined temperature.