Battery pack and power supply system
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKEISUKE SHIMIZU, TAKESHI NAGAO, GORO FUJITA
Life of this patent
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Abstract
Battery pack (10) having a substantially sealed structure includes a plurality of cells (11-16) each having an opened portion provided in order to discharge an internal gas when an internal pressure rises. Non-resettable pressure switch (30, 31) that is connected to controller (50) by a signal line. The pressure switch changes irreversibly from a significant state to a non-significant state when a pressure in battery pack (10) is greater than a predetermined pressure threshold value.
Claims8
A battery pack having a substantially sealed structure, the battery pack comprising:
- a plurality of cells each having an opened portion provided in order to discharge an internal gas when an internal pressure rises;
- and
- a pressure switch that is non-resettable and connected to a controller by a signal line,
- wherein the pressure switch changes irreversibly from a significant state to a non-significant state when a pressure in the battery pack is greater than a predetermined pressure threshold value.
battery pack having a substantially sealed structure, the battery pack comprising:
- a plurality of cells each having an opened portion provided in order to discharge an internal gas when an internal pressure rises;
- and
- a pressure switch that is connected to a controller by a signal line, wherein the pressure switch changes from a significant state to a non-significant state and notifies the controller of the change via the signal line when a pressure in the battery pack is greater than a predetermined pressure threshold value.
Dependencies are inferred from the claim text.