Preparation apparatus and preparation method for gel polymer lithium ion battery
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A technology of lithium-ion batteries and gel polymers, which is applied in the manufacture of electrolyte batteries, secondary batteries, battery pack components, etc., can solve problems such as many disadvantages of the thermal polymerization process and poor battery reliability, and achieve improved battery reliability, Improved reliability and uniform thickness
Active Publication Date: 2016-08-24
FAIR ELECTRIC WUHAN CO LTD
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[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
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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 apparatus and a preparation method for a gel polymer lithium ion battery. The preparation apparatus comprises two first containers, two second containers, two groups of first pulley groups, two groups of second pulley groups, an extrusion roller and a winding apparatus, wherein the two first containers are filled with an electrolyte; the two second containers are filled with a gel electrolyte precursor solution; the two groups of first pulley groups are wound with a positive plate and a negative plate respectively; when the first pulley groups turn, the first pulley groups drive the positive plates and the negative plates to be wetted in the electrolyte; the two groups of second pulley groups are wound with diaphragms respectively; when the second pulley groups turn, the second pulley groups drive the diaphragms to be wetted in the gel electrolyte precursor solution; the extrusion roller enables the positive plate, the diaphragm, the negative plate and the diaphragm which are wetted to be extruded together in sequence; and the winding apparatus is used for winding the extrusion material so as to assemble the battery. The preparation apparatus and the preparation method provided by the invention are used for solving the technical problem of low reliability of the battery caused by the reason that the positive and negative plates cannot be well wetted by the electrolyte and by a plurality of shortcomings existing in the thermal polymerization process; and in addition, a technical effect of improving the reliability of the battery is realized.
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...
Claims
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