Method for controlling the temperature of a battery in a motor vehicle

    公开(公告)号:US12237489B2

    公开(公告)日:2025-02-25

    申请号:US17769390

    申请日:2020-09-29

    Applicant: Arkema France

    Abstract: The invention relates to a method for controlling the temperature of a battery in an electric or hybrid motor vehicle by means of a system comprising a vapor compression circuit in which flows a first heat transfer composition comprising 2,3,3,3-tetrafluoropropene, and a secondary circuit in which flows a second heat transfer composition comprising 1-chloro-3,3,3-trifluoropropene that has a ratio of the Z form to the E form of less than or equal to 9, the method involving: —heat exchange between the battery and the second heat transfer composition; —heat exchange between the second heat transfer composition and the first heat transfer composition. The invention also relates to a system for carrying out said method.

    Heat activated multiphase fluid-operated pump for motor temperature control

    公开(公告)号:US12142749B1

    公开(公告)日:2024-11-12

    申请号:US18537775

    申请日:2023-12-12

    Inventor: Mudasir Ahmad

    Abstract: A heat-activated pump regulates the temperature of a battery or motor. For a battery, an evaporator has fluid passageways arranged in a serpentine path or multiple parallel paths, in direct contact with battery cells. For a motor, the passageways wrap around its casing or within. Working fluid in the passageways is converted to vapor. Whenever a target pressure is exceeded, a pressure-control valve allows vaporized working fluid to escape into a liquid-piston chamber, where it expands adiabatically and displaces pumped liquid, expelling it in a pumping stage from the liquid-piston chamber through a check valve into a condenser. Another check valve allows the pumped liquid to return in a suction stage to the chamber. An injector valve between the liquid-piston chamber and the evaporator returns jets of condensed working fluid to the evaporator in successive brief spurts responsive to periodic pressure pulses in the liquid-piston chamber.

    Battery box having heat directing function, heat directing structure, and method

    公开(公告)号:US12100825B1

    公开(公告)日:2024-09-24

    申请号:US18698461

    申请日:2022-10-19

    Abstract: The present invention provides a battery box having a heat directing function, a heat directing structure, and a method. The battery box comprises: a box body, the inner space of the box body being divided, by a heat partition plate, into a battery compartment in an upper portion and a heat concentration and distribution area in a lower portion; and at least one cell, the cell comprising an upper end face and a housing, the upper end face being provided with cell pressure relief valve, the cell being provided in the battery compartment, and the upper end face being provided to face the heat partition plate. The heat partition plate is provided with a heat directing area. An outlet of the cell pressure relief valve corresponds to the heat directing area. A heat flow discharged by the cell pressure relief valve enters the heat concentration and distribution area through the heat directing area. When thermal runaway occurs in the cell, the heat flow discharged by the pressure relief valve flows from the pressure relief valve to the heat directing area, then to the heat concentration and distribution area, and then to the outside of the box, and the bulk density of the heat flow is reduced step by step, thereby achieving the purpose of heat directing.

    BATTERY MODULE COMPRISING COOLING PLATE FILLED WITH PHASE CHANGE MATERIAL

    公开(公告)号:US20240170761A1

    公开(公告)日:2024-05-23

    申请号:US18203286

    申请日:2023-05-30

    Inventor: Kihoon AHN

    CPC classification number: H01M10/6555 H01M10/613 H01M10/647 H01M10/6569

    Abstract: A battery module comprises a plurality of battery cells, a plurality of cooling plates each installed between adjacent battery cells among the plurality of battery cells to absorb heat from the plurality of battery cells, a heat transfer interface material coupled to one side of the plurality of battery cells to be in contact with the plurality of cooling plates, and receiving heat from the cooling plates a cooling channel coupled to one side of the heat transfer interface material to receive heat from the heat transfer interface material and transfer heat to the outside, wherein each cooling plate of the plurality of cooling plates is filled with the phase change material.

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