A kind of preparation device and preparation method of gel polymer lithium ion battery
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A lithium-ion battery and gel polymer technology, which is applied in the manufacture of electrolyte batteries, secondary batteries, battery pack parts, etc. Improved reliability and uniform thickness
Active Publication Date: 2018-10-19
衡电科技(成都)有限公司
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Problems solved by technology
[0005] The present invention provides a preparation device and method for a gel polymer lithium-ion battery, which solves the problem of the preparation device and method for a gel polymer lithium-ion battery in the prior art, because the electrolyte cannot infiltrate the pole pieces well. , and the thermal polymerization process has many disadvantages, so there is a technical problem of poor battery reliability
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Embodiment 1
[0040] In this embodiment, a preparation device for a gel polymer lithium-ion battery is provided, please refer to figure 1 , figure 1 It is the structural diagram of the preparation device of the gel polymer lithium ion battery in the embodiment of the present application, such as figure 1 As shown, the device includes:
[0041] A container group, the container group comprising: two first containers 1 and two second containers 2, electrolyte solution is housed in the two first containers 1; gel is housed in the two second containers 2 Electrolyte precursor fluid;
[0042] Two sets of first pulley sets 3, the two sets of first pulley sets 3 are respectively wound with a positive pole piece 4 and a negative pole piece 5; the two sets of first pulley sets 3 are partially located in the two sets of first containers 1, When the two sets of first pulley sets 3 rotate, the positive pole piece 4 and the negative pole piece 5 are driven to soak in the electrolyte;
[0043]Two sets...
Embodiment 2
[0069] Provide a kind of preparation method of gel polymer lithium ion battery in this embodiment, please refer to figure 2 , figure 2 It is a flow chart of the preparation method of the gel polymer lithium ion battery in the embodiment of the present application, such as figure 2 As shown, the method includes:
[0070] Step S201, soaking the positive pole piece and the negative pole piece in the electrolyte, and soaking the two sets of separators in the gel electrolyte precursor liquid;
[0071] Step S202, extruding the infiltrated positive electrode sheet, separator, negative electrode sheet and separator together in sequence to form an extrusion material;
[0072] Step S203, winding the extruded material for battery assembly.
[0073] In the embodiment of the present application, before soaking the positive pole piece and the negative pole piece in the electrolyte, it further includes: performing dewatering and dust removal treatment on the positive pole piece and the...
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Abstract
The invention discloses a preparation device and a preparation method of a gel polymer lithium ion battery. The device comprises: two first containers are equipped with an electrolyte solution; two second containers are equipped with a gel electrolyte precursor fluid; The positive pole piece and the negative pole piece are respectively rolled on the first pulley block of the first group. When rotating, the positive pole piece and the negative pole piece are driven to soak in the electrolyte; The gel electrolyte precursor liquid is soaked; the squeeze roller squeezes the soaked positive electrode sheet, separator, negative electrode sheet and separator together in sequence; the winding device winds the extruded material for battery assembly. The device and method provided by the present invention are used to solve the preparation device and method of gel polymer lithium ion battery in the prior art. Since the electrolyte cannot infiltrate the pole piece well, and the thermal polymerization process has many disadvantages, the existing battery is reliable. The technical problem of poor performance has been solved, and the technical effect of improving battery reliability has been achieved.
Description
technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a preparation device and method for a gel polymer lithium ion battery. Background technique [0002] Lithium-ion batteries are widely used in consumer electronics, electric transportation, and clean energy storage systems due to their high energy density, high operating voltage, good cycle stability, and low self-discharge effect. Traditional lithium-ion batteries have hidden dangers of flammability and leakage of organic electrolytes, which are the main reasons for the safety of lithium-ion batteries. Compared with traditional lithium-ion batteries, there is no free liquid inside the gel polymer lithium-ion battery, which eliminates the hidden danger of liquid leakage, improves the battery's resistance to shock, vibration, and deformation, and greatly reduces the battery's resistance to overcharge, discharge, and short circuit. , Acupuncture, etc. may cause combus...
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