Battery pack with intracell heat conducting members

    公开(公告)号:US10103415B2

    公开(公告)日:2018-10-16

    申请号:US15014567

    申请日:2016-02-03

    Abstract: A battery cell includes a pouch, an electrolyte material, positive and negative electrodes, and one or more heat conducting members. The pouch has an inner surface defining an internal volume, within which is contained the electrolyte material. The electrodes form current collectors that are positioned within the internal volume of the pouch. The electrode terminals are connected to a respective one of the positive and negative electrodes. Each heat conducting member is in thermal communication with a respective electrode terminal fully within the internal volume of the pouch, and extends between the electrodes and the inner surface of the pouch. The heat conducting members form a parallel heat transfer path within the battery cell. A battery pack includes a housing containing multiple such battery cells.

    METHOD AND APPARATUS FOR EVALUATING AN ULTRASONIC WELD JUNCTION

    公开(公告)号:US20190152001A1

    公开(公告)日:2019-05-23

    申请号:US16251755

    申请日:2019-01-18

    Abstract: A method and a test fixture for evaluating a battery cell are described, wherein the battery cell is composed of a cell body having a plurality of electrode foils that are joined to both a positive terminal and a negative terminal at weld junctions. The method includes retaining the cell body of the battery cell in a first clamping device and gripping one of the positive and negative terminals in a terminal gripper. A dynamic stress end effector coupled to the terminal gripper is employed to apply a vibrational excitation load to the one of the positive and negative terminals. Impedance between the positive terminal and the negative terminal is monitored via a controller, and integrity of the weld junction of the one of the positive and negative terminals is evaluated based upon the impedance.

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