Lithium-ion battery and electric vehicle utilizing the same

{
  "publication_number": "US10319970B2",
  "country": "US",
  "kind": "B2",
  "title": "Lithium-ion battery and electric vehicle utilizing the same",
  "abstract": "The present invention relates to a lithium-ion battery and an electric vehicle utilizing the lithium-ion battery. The lithium-ion battery comprises a housing, and battery cell group disposed in the housing, wherein, a fire-extinguishing material layer is provided between the battery cell group and the housing, and the housing is provided with drain hole. The technical scheme of the present invention can effectively prevent fire and explosion of lithium-ion battery, and can significantly improve the safety of lithium-ion battery in use.",
  "claims": [
    "1. A lithium-ion battery comprising a housing, a battery cell group disposed in the housing, and a fire-extinguishing material layer between the battery cell group and the housing, the housing comprising a drain hole, the lithium-ion battery further comprising a battery sheath arranged in the housing, the battery cell group arranged in the battery cell sheath, the fire-extinguishing material layer arranged between the battery cell sheath and the housing, and the material of the battery cell sheath is ABS plastics or aluminum; wherein a heat-insulating layer is arranged on the inner surface of the housing, and the material of the heat-insulating layer is silicon dioxide or asbestos.",
    "2. The lithium-ion battery according to claim 1, wherein the material of the fire-extinguishing material layer is a fire-extinguishing material that can undergo an endothermic reaction and generate carbon dioxide.",
    "3. The lithium-ion battery according to claim 1, wherein a shock absorption and flame-retardant material is filled between the battery cell group and the battery cell sheath.",
    "4. The lithium-ion battery according to claim 1, further comprising a pressure relief valve matched with the drain hole.",
    "5. The lithium-ion battery according to claim 4, wherein the pressure relief valve comprises a valve body and a valve cap with a through-hole, which are matched and connected with each other, a valve cavity that communicates with the drain hole is arranged in the valve body, a resilient component is arranged on the bottom surface of the valve cap, one end of the resilient component is connected with the valve cap, and the other end of the resilient component is connected with a valve block that matches with the valve cavity, and the valve block can enter into or exit the valve cavity under the resilient effect of the resilient component to form a sealed state and a vent state.",
    "6. The lithium-ion battery according to claim 1, wherein the drain hole is arranged in the top of the housing.",
    "7. The lithium-ion battery according to claim 1, wherein the material of the housing is aluminum.",
    "8. An electric vehicle in which the lithium-ion battery according to claim 1 is used as a battery.",
    "9. The lithium-ion battery according to claim 2, wherein the material of the fire-extinguishing material layer is a bicarbonate.",
    "10. The lithium-ion battery according to claim 3, wherein the material of the fire-extinguishing material layer is one or more of sodium bicarbonate, potassium bicarbonate, calcium bicarbonate, and ammonium bicarbonate.",
    "11. The lithium-ion battery according to claim 3, wherein the shock absorption and flame-retardant material is silica gel or flame-retardant AN-VDC copolymer fibers."
  ],
  "description_excerpt": "The present invention relates to the lithium-ion battery field, in particular to a lithium-ion battery and an electric vehicle utilizing the lithium-ion battery.\n\nIn view of the crisis of non-renewable energy resources and severe environmental pollution, the development of green, environment friendly, and high-performance lithium-ion batteries has been accelerated in the world, the application domain of lithium-ion batteries has been expanded from the digital product field to secondary power supply in transportation, power, energy storage, aerospace, and communication fields, etc., and the demand for lithium-ion batteries has evolved from the level of hundreds of mAh to the level of hundreds or even thousands of Ah. As the capacity is increased, safety problems are more difficult to control. Hence, presently, the safety of high-capacity lithium-ion batteries is a research subject in many enterprises. The application of lithium-ion batteries will enter into a faster and more extensive development stage if fire and explosion of lithium-ion batteries, which is a worldwide challenge, can be overcome. The Chinese Patent Publication No. CN102044715A has disclosed a lithium-ion battery explosion protection device, which has a structure that comprises a lithium-ion battery housing, a positive electrode, a negative electrode, and a rubber plate, wherein, the lithium-ion battery housing has vent holes, and the rubber plate covers the vent holes and is fixed, and is in 0.5-5 mm thickness.",
  "cpc": [
    "B60K 1/04",
    "A62C 3/07",
    "A62C 3/16",
    "A62C 99/0027",
    "A62D 1/06",
    "B60Y 2200/91",
    "H01M 10/0525",
    "H01M 10/42",
    "H01M 2/02",
    "H01M 2/1094",
    "H01M 2/12",
    "H01M 2/127",
    "H01M 2/1276",
    "H01M 2200/10",
    "H01M 2200/20",
    "H01M 2220/20",
    "H01M 50/10",
    "H01M 50/103",
    "H01M 50/14",
    "H01M 50/143",
    "H01M 50/24",
    "H01M 50/30",
    "H01M 50/333",
    "H01M 50/383",
    "H01M 50/394",
    "Y02E 60/10",
    "Y02E 60/122"
  ],
  "ipc": [
    "A62C 3/07",
    "A62C 3/16",
    "A62C 99/00",
    "A62D 1/06",
    "B60K 1/04",
    "H01M 10/0525",
    "H01M 50/10",
    "H01M 50/103",
    "H01M 50/14",
    "H01M 50/143",
    "H01M 10/42"
  ],
  "assignees": [
    "Zhejiang Chaowei Chuangyuan Industrial Co Ltd"
  ],
  "inventors": [
    "Yanxian Sun",
    "Ning Ren",
    "Aiming Li",
    "Xiaoxu Yang",
    "Haifei Zhang"
  ],
  "filing_date": "2015-07-24",
  "publication_date": "2019-06-11",
  "grant_date": "2019-06-11",
  "priority_date": "2014-07-30",
  "application_number": "US-201515327893-A",
  "family_id": "55216764",
  "cited_by_count": 3,
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}