Battery top cover based on block pole and preparation method thereof
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A pole and block technology, which is applied in the field of battery top cover based on block pole and its preparation, can solve the problem of low pass rate of the cover plate, and achieve the effect of cost reduction, tight combination and good airtightness
Pending Publication Date: 2019-09-06
池州市骏智机电科技有限公司
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[0004] The purpose of the present invention is to provide a battery top cover based on a block pole and its preparation method to solve the problem of low pass rate of the cover plate
Method used
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Embodiment 1
[0035] Please refer to Figure 1 to Figure 2 , this embodiment 1 provides a battery top cover based on block poles.
[0036] The battery top cover includes a cover plate 1, a plastic part 3 and at least one block pole 2; the block pole 2 and the cover plate 1 are fixedly connected through the plastic part 3;
[0037] The cover plate 1 is provided with a cover plate 1 hole for inserting the block pole 2, and the cover plate 1 hole penetrates the two opposite surfaces of the cover plate 1; the block pole 2 is inserted into the cover In the hole of the plate 1, a block-shaped pole groove 21 is opened on each surface of the block-shaped pole 2 facing the cover plate 1;
[0038] The plastic part 3 is arranged between the cover plate 1 and the block pole 2; the plastic part 3 fills the block pole groove 21 and wraps the part of the cover plate 1 facing the block pole 2 , and fixedly connect each surface of the block pole 2 facing the cover plate 1 .
[0039] In this embodiment, t...
Embodiment 2
[0052] This embodiment 2 provides a method for preparing a battery top cover based on block poles, and the battery top cover in embodiment 1 can be obtained.
[0053] The preparation method comprises the following steps:
[0054] S1, opening a plurality of nanometer holes on the surface of the block pole 2 and the surface of the cover plate 1 facing the block pole 2 through chemical corrosion;
[0055] S2. Insert the block pole 2 into the hole of the cover plate 1;
[0056] S3. Plastic is injected at the junction of the block pole 2 and the cover plate 1 to form a plastic part 3, so that the block pole 2 and the cover plate 1 are fixedly connected.
[0057] Among them, the size and distribution density of the nanopores, the material of the injection molding plastic, etc. are all introduced in detail in Example 1, and will not be repeated here.
[0058] The opening of the nanopores in step S1 is carried out by chemical etching, and the chemical etching specifically includes t...
Embodiment 3
[0072] Embodiment 3 provides a lithium ion battery, including the battery top cover described in Example 1 and the battery top cover prepared by the preparation method in Example 2.
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Abstract
The invention discloses a battery top cover based on a block pole and a preparation method thereof. The battery top cover comprises a cover plate, a plastic part and a block pole; the block pole and the cover plate are fixedly connected through the plastic part, and a block pole groove is formed in each surface, facing the cover plate, of the block pole; the plastic part is arranged between the cover plate and the block pole; and the plastic part is filled into the block pole grooves, covers a part, facing the block pole, of the cover plate, and is fixedly connected with each surface, facing the cover plate, of the block pole. According to the battery top cover based on a block pole and the preparation method thereof in the invention, the block pole and the cover plate are fixedly connected through the plastic part, a block pole groove is formed in each surface, facing the cover plate, of the block pole, and the plastic part is filled into the block pole groove, so that the block poleand the plastic part are combined more tightly. Through the block pole groove, the air tightness of the battery top cover can be guaranteed, moreover, nano-holes are formed in the block pole and the cover plate through chemical corrosion, the plastic part is permeated into the nano-holes, so that the bonding strength of the plastic part, the block pole and the cover plate can be further improved.
Description
technical field [0001] The invention relates to the field of batteries, in particular to a battery top cover based on block poles and a preparation method thereof. Background technique [0002] At present, in the battery top cover of the power battery in the new energy automobile industry, the block pole and the cover plate generally adopt the assembly process. Specifically, according to the needs, first perform friction welding on the positive / negative block pole. Friction welding is mainly used when the block pole is a composite structure. For example, copper and aluminum sheets are friction welded to form a copper-aluminum composite block. shaped pole. Then, the sealing ring made of fluororubber and the lower plastic part formed by injection molding of PP material are assembled on the positive / negative block pole; the stamped aluminum cover plate is then assembled on the sealing ring and the lower plastic part, The cover is made to squeeze the sealing ring so that the s...
Claims
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Application Information
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