A kind of preparation method of lithium ion electrochemical energy storage device
An electrochemical, lithium-ion technology, applied in the field of lithium-ion electrochemical energy storage devices, can solve the problems of long pre-lithium intercalation time, low production efficiency, and the performance of lithium-ion electrochemical energy storage devices needs to be improved, so as to improve production efficiency. , to ensure the overall performance, to solve the effect of large-scale production
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Embodiment 1
[0063] The first pipe is a PP pipe with an inner diameter of 3 mm and a length of 20 mm. Then put the heat-sealed energy storage device into the hot-pressing forming equipment, control the temperature of the hot-pressing forming equipment to 120°C, and then vacuumize the inside of the shell for 48 hours by opening the valve on the second pipeline, Remove the moisture inside the shell. Then, after the energy storage device is naturally cooled, liquid is injected into the inside of the housing through the second pipeline, and the pressure is maintained at -70kPa until the electrolyte is completely infiltrated. Then block the communication between the PP pipeline and the second pipeline, and after pre-embedding lithium on the negative electrode of the battery cell by electrochemical method, finally connect the positive electrode, negative electrode and lithium electrode of the lithium ion energy storage device to charge Discharge equipment, first charge and discharge the negativ...
Embodiment 2
[0071] The first pipe is a pipe made of the same material as the heat-sealing glue with an inner diameter of 2 mm and a length of 50 mm. . Then put the heat-sealed energy storage device into the hot-pressing forming equipment, control the temperature of the hot-pressing forming equipment to 100°C, and at the same time, vacuumize the inside of the shell for 72 hours by opening the valve on the second pipeline, Remove the moisture inside the shell. Then, after the energy storage device is naturally cooled, liquid is injected into the inside of the casing through the second pipeline, and the pressure is maintained at -90kPa until the electrolyte is completely infiltrated. Then block the communication between the first pipeline and the second pipeline, and after pre-intercalating lithium on the negative electrode of the battery cell by electrochemical method, finally connect the positive electrode, negative electrode and lithium electrode of the lithium ion energy storage device ...
Embodiment 3
[0079] The first pipe is a nickel pipe with an inner diameter of 5 mm and a length of 5 mm, whose outer and inner surfaces are coated with heat-sealing glue. Then put the heat-sealed energy storage device into the hot-pressing forming equipment, control the temperature of the hot-pressing forming equipment to 150°C, and at the same time, vacuumize the inside of the shell for 12 hours by opening the valve on the second pipeline, Remove the moisture inside the shell. Then, after the energy storage device is naturally cooled, liquid is injected into the casing through the second pipeline, and the pressure is maintained at -30kPa until the electrolyte is completely infiltrated. Then block the connection between the nickel tube and the second pipeline, pre-embed lithium on the positive electrode or the negative electrode of the battery cell by electrochemical method, and finally connect the positive electrode, the negative electrode and the lithium electrode of the lithium ion ener...
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