Lithium ion battery and with high safety performance and battery module
A lithium-ion battery, safety performance technology, applied in the direction of cylindrical shell batteries/batteries, battery pack components, batteries, etc., can solve the problem of explosion-proof shells that do not function as explosion-proof, thermal runaway diffusion of cylindrical cells, and explosion-proof nicks Unable to open and other problems to achieve timely pressure relief, prevent pressure accumulation, and solve the effect of blasting chambers
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[0062] Example 1
[0063] An 18650 lithium ion battery with high safety performance includes an explosion-proof shell, a battery cell installed in the explosion-proof shell, and an explosion-proof cap for sealing the explosion-proof shell.
[0064] The explosion-proof housing includes a housing body, the top of the housing body is provided with an opening, and a cavity for accommodating the battery core is provided inside the housing body, the housing body includes a bottom plate and is vertically arranged on the bottom plate The bottom plate is provided with an explosion-proof score; the explosion-proof score is a circular score with a diameter of 9mm and an explosion-proof pressure of 3MPa.
[0065] The explosion-proof cap includes a top cover, a burst disk, an insulating gasket, an orifice plate and a sealing ring, wherein the top cover is connected to the burst disk, the insulating gasket and the orifice plate in sequence to form an inner core of the cap; the sealing ring sleeve ...
Example Embodiment
[0069] Example 2
[0070] A 26650 type cylindrical lithium ion battery with high safety performance includes an explosion-proof shell, a battery cell installed in the explosion-proof shell, and an explosion-proof cap for sealing the explosion-proof shell.
[0071] The explosion-proof housing includes a housing body, the top of the housing body is provided with an opening, and a cavity for accommodating the battery core is provided inside the housing body, the housing body includes a bottom plate and is vertically arranged on the bottom plate An explosion-proof score is provided on the bottom plate; the explosion-proof score is a trapezoidal score, and the explosion-proof pressure is 6MPa.
[0072] The explosion-proof cap includes a top cover, a burst disk, an insulating gasket, an orifice plate and a sealing ring, wherein the top cover is connected to the burst disk, the insulating gasket and the orifice plate in sequence to form an inner core of the cap; the sealing ring sleeve It ...
Example Embodiment
[0076] Example 3
[0077] A battery module includes 7 lithium-ion batteries connected in series, wherein the lithium-ion battery adopts the lithium-ion battery in embodiment 1.
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