Detection device for lithium-ion battery

A detection device for lithium-ion battery, comprising:

• an insulative housing having a receiving chamber for receiving a positive electrode sheet, a negative electrode sheet, and an electrolyte of a lithium-ion battery, the receiving chamber comprising a positive electrode sheet gas region and a negative electrode sheet gas region formed above the electrolyte;
• an insulative separator provided in the receiving chamber of the insulative housing in a sealing manner, and positioned between the positive electrode sheet and the negative electrode sheet of the lithium-ion battery when the positive electrode sheet and the negative electrode sheet of the lithium-ion battery are received in the receiving chamber, to separate the positive electrode sheet gas region and the negative electrode sheet gas region of the receiving chamber;
• a positive electrode sheet conductive fastener passing through the insulative housing in a sealing manner and fixedly connected to a positive electrode current collector of the positive electrode sheet of the lithium-ion battery at a positive electrode current collector non-film-coating region, to fix the positive electrode sheet in the receiving chamber of the insulative housing;
• a negative electrode sheet conductive fastener passing through the insulative housing in a sealing manner and fixedly connected to a negative electrode current collector of the negative electrode sheet of the lithium-ion battery at a negative electrode current collector non-film-coating region, to fix the negative electrode sheet in the receiving chamber of the insulative housing;
• an insulative cover engaged with the insulative housing and the insulative separator in a sealing manner;
• and
• a positive electrode region detection hole provided on the insulative housing and/or the insulative cover in a sealing manner and communicated to the positive electrode sheet gas region;
• and
• a negative electrode region detection hole provided on the insulative housing and/or the insulative cover in a sealing manner and communicated to the negative electrode sheet gas region;
• wherein
• the positive electrode region detection hole comprises:
• a positive electrode region gas pressure detection hole communicated to the positive electrode sheet gas region for allowing a barometer to pass through in a sealing manner, so as to detect a gas pressure of the positive electrode sheet gas region;
• and
• a positive electrode region temperature detection hole communicated to the positive electrode sheet gas region for allowing a thermometer to pass through in a sealing manner, so as to detect a temperature of the positive electrode sheet gas region;
• the negative electrode region detection hole comprises:
• a negative electrode region gas pressure detection hole communicated to the negative electrode sheet gas region for allowing a barometer to pass through in a sealing manner, so as to detect a gas pressure of the negative electrode sheet gas region;
• and
• a negative electrode region temperature detection hole communicated to the negative electrode sheet gas region for allowing a thermometer to pass through in a sealing manner, so as to detect a temperature of the negative electrode sheet gas region.