摘要:
Mechanically and thermally improved rechargeable batteries, modules and fluid-cooled battery systems are disclosed herein. The battery is prismatic in shape with an optimized thickness to width to height aspect ratio which provides the battery with balanced optimal properties when compared to prismatic batteries lacking this optimized aspect ratio. The optimized thickness, width and height allow for maximum capacity and power output, while eliminating deleterious side effects. The battery case allows for unidirectional expansion which is readily compensated for by applying external mechanical compression counter to that direction. In the module (32), the batteries are bound within a bundling/compression means under external mechanical compression which is optimized to balance outward pressure due to expansion and provide additional inward compression to reduce the distance between the positive and negative electrodes, thereby increasing overall battery power. The fluid-cooled battery pack (39) includes a battery-pack case (40) having coolant inlets (41) and outlets (42); battery modules within the case such that they are spaced from the case walls and from each other to form coolant flow channels (43) along at least one surface of the bundled batteries; and at least one coolant transport means (44). The width of the coolant flow channels allows for maximum heat transfer. Finally, the batteries, modules and packs can also include means for providing variable thermal insulation to at least that portion of the rechargeable battery system which is most directly exposed to ambient thermal conditions, so as to maintain the temperature of the system within the desired operating range thereof under variable ambient conditions.
摘要:
A monoblock battery case and a monobock battery. The monoblock battery case comprises a first and a second container each having partitions that divide the containers into cell compartments. The first container is attached to and co-operates with the second container to form one or coolant channels disposed between the first and second containers.
摘要:
An apparatus for accurately measuring pressure within a rechargeable cell (16), the apparatus comprising: a frame, the frame including at least one cavity adapted to releasably seat a rechargeable cell; a fixed brace defining a first end of the at least one cavity; a movable brace defining the end of the at least one cavity opposite from the fixed brace, the movable brace including a hollow needle, the hollow needle having a pointed end which is operatively directed toward one end of a rechargeable cell disposed inthe cavity, and means for sealing a point where the hollow needle is inserted into a rechargeable cell; a pressure transducer operatively connected with the hollow needle; and means for controllably moving the movable brace relative to the fixed brace, whereby the hollow needle is adapted for insertion into and removal from a rechargeable cell disposed in the cavity.