{
  "patent_number": "US 9168838",
  "country": "US",
  "title": "How an EV Charging Station Manages Power from Batteries and the Grid",
  "original_title": "Charging control system and charging control method",
  "summary": "This patent describes a smart charging system for electric vehicles that decides whether to power cars from a local battery or the main electricity grid, and when to recharge that local battery, to help balance power demand.",
  "what_it_does": "This patent describes a system that intelligently controls how electric vehicles (EVs) are charged. It uses a \"stationary rechargeable means\" (like a large battery bank) alongside the main \"electric power grid\" to supply power. A \"charging control means\" decides the power source: if EV charging meets a \"predetermined condition\" (e.g., needing power quickly during peak grid demand), the EV gets electricity from the stationary battery. Otherwise, the EV charges directly from the grid. Simultaneously, the stationary battery itself is recharged from the grid, especially during times when fewer vehicles are charging, as determined by a \"charging scheduling means.\" For example, a a charging station might charge EVs from its local battery during a busy afternoon, then recharge the local battery from the grid overnight when electricity is cheaper and demand is low.",
  "what_it_does_not_cover": [
    "Does not cover charging systems that only draw power directly from the electric grid without using an intermediate stationary battery.",
    "Does not cover systems that charge electric vehicles exclusively from a stationary battery without any connection to a larger electric power grid.",
    "Does not cover systems where the decision to charge from the stationary battery or grid is not based on a \"predetermined condition\" for the vehicle's charging.",
    "Does not cover charging scheduling that doesn't consider both vehicle charging and stationary battery charging as part of the overall electric power demand.",
    "Does not cover systems that don't specifically shift stationary battery charging to times with fewer vehicles being charged."
  ],
  "filed": "2012-02-29",
  "granted": "2015-10-27",
  "expires": "2032-02-29",
  "status": "active",
  "holder": "NEC",
  "holder_url": "https://patentbrief.org/company/nec",
  "inventors": [
    {
      "name": "Koji Kudo",
      "url": "https://patentbrief.org/inventor/koji-kudo"
    },
    {
      "name": "Hitoshi Yano",
      "url": "https://patentbrief.org/inventor/hitoshi-yano"
    },
    {
      "name": "Ryosuke Kuribayashi",
      "url": "https://patentbrief.org/inventor/ryosuke-kuribayashi"
    }
  ],
  "times_cited": 1,
  "tags": [
    "telecommunications",
    "energy",
    "automotive",
    "software",
    "consumer_electronics"
  ],
  "abstract": "Charging control section 17 controls charging such that when the charging of an EV satisfies a predetermined condition, the EV is charged with electricity from a stationary energy storage and when the charging of the EV does not satisfy the predetermined condition, the EV is charged with electricity from an electric power grid and information communication grid 1 and the stationary energy storage is charged from electric power grid and information communication grid 1 based on the state of stored electricity of the stationary energy storage. Charging scheduling section 15 performs scheduling for the EV based on an electric power demand that cause electric power grid and information communication grid 1 to charge the EV with electricity, the electric power demand including electric power demand created by charging performed under the control of charging control section 17.",
  "url": "https://patentbrief.org/patent/us/9168838/charging-control-system-and-charging-control-method",
  "markdown_url": "https://patentbrief.org/patent/us/9168838/charging-control-system-and-charging-control-method/md",
  "google_patents_url": "https://patents.google.com/patent/US9168838",
  "relatedPatents": [
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}