CN109742272B - Lithium battery waterproof method - Google Patents

Lithium battery waterproof method Download PDF

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Publication number
CN109742272B
CN109742272B CN201811404622.5A CN201811404622A CN109742272B CN 109742272 B CN109742272 B CN 109742272B CN 201811404622 A CN201811404622 A CN 201811404622A CN 109742272 B CN109742272 B CN 109742272B
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lithium battery
shell
waterproof
sponge
size
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CN109742272A (en
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顾得见
方磊
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Beijing Dinghan Technology Co Ltd
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Yingshang Beifang Dongli New Energy Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The invention discloses a lithium battery waterproof method, which comprises the following steps: preparing a sponge shell: measuring the size of the lithium battery, and manufacturing a sponge shell according to the size; manufacturing a waterproof shell: using an injection molding machine to perform injection molding on the inside of the injection mold; waterproof installation: sequentially installing a sponge shell, a buzzer, an auxiliary lithium battery and a waterproof shell on the surface of the lithium battery; sealing treatment: the copper post is inserted into the outlet. According to the lithium battery waterproof method, firstly, water can be better prevented, the waterproof capacity of the lithium battery is improved, meanwhile, the lithium battery in the lithium battery can be better protected from being damaged, the installation performance of the lithium battery in use is improved, secondly, when the waterproof shell is damaged or water enters the lithium battery, the sponge shell absorbs water, and the buzzer and the auxiliary lithium battery are electrified through the water-containing sponge, so that the auxiliary lithium battery is electrified to give an alarm, prompt is carried out, and a better use prospect is brought.

Description

Lithium battery waterproof method
Technical Field
The invention relates to the field of lithium battery waterproofing, in particular to a lithium battery waterproofing method.
Background
With the increasingly wide application of lithium batteries in daily life of people, the waterproof problem of the lithium batteries becomes a new subject and direction for research of people, the conventional packaging process is adopted for the current single lithium battery, the batteries and terminal equipment are in clearance fit, and the waterproof requirement cannot be met at all;
the existing lithium battery waterproof method has certain disadvantages in use, (1) in order to realize the waterproof between the battery and the terminal equipment, the existing common method is to sleeve a waterproof sealing ring on the battery, the matching tightness of the waterproof sealing ring and the battery cannot be ensured, the water inlet risk is easy to occur, and meanwhile, the connection mode between the hardware contact piece on the battery and the battery rubber shell adopts clearance fit, so that the water is easy to enter the battery, and the battery is damaged; (2) the existing lithium battery waterproof treatment is to protect the lithium battery before meeting water, when the water drainage treatment is damaged or goes wrong, timely repair cannot be carried out, the water drainage treatment often appears, after the water drainage treatment is carried out on the lithium battery, the management and the protection are not carried out, so that the existing waterproof problem cannot be found timely, the problems continue to worsen, finally, the lithium battery is damaged, and only the damage can be repaired after the damage, certain loss is caused, and therefore the lithium battery waterproof method is provided.
Disclosure of Invention
The invention mainly aims to provide a lithium battery waterproof method which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a waterproof method for a lithium battery comprises the following steps:
(1) and manufacturing a sponge shell: measuring the size of the lithium battery, and manufacturing a sponge shell according to the size;
(2) and manufacturing a waterproof shell: using an injection molding machine to perform injection molding on the inside of the injection mold;
(3) waterproof installation: sequentially installing a sponge shell, a buzzer, an auxiliary lithium battery and a waterproof shell on the surface of the lithium battery;
(4) and sealing treatment: and inserting the copper column into the wire outlet, and filling the gap between the shell and the copper column by using glass cement.
Preferably, in the step (1), the step of manufacturing the sponge shell comprises the following steps:
(1.1) mixing 100mL of distilled water with a cross-linking agent, a foaming agent and a plasticizer to obtain a solution, adding konjac powder, dissolving the konjac powder in the solution, and stirring;
and (1.2) pouring the stirred mixed solution into a foaming mold, heating, foaming and shaping.
Preferably, in the step (1.1), the foaming agent is NaHCO3The amount of the foaming agent is 2.5-3.0 g/L, and the cross-linking agent is Na2CO3Amount of crosslinking agent4.0 to 4.3g/L, and a plasticizer C24H38O4The plasticizer is 9.6-10.5 g/L.
Preferably, in the step (1.2), the foaming mold is divided into an inner layer and an outer layer, the size of the inner layer is consistent with that of the lithium battery shell, the distance between the outer layer and the inner layer is 1.2-2.5 mm, and the temperature rise temperature is 100-110 ℃.
Preferably, in the step (2), the injection mold comprises: and measuring the size of the outer layer of the foaming mold, manufacturing an injection mold according to the size, and arranging wire outlets at positions of the waterproof shell corresponding to the anode and the cathode of the lithium battery respectively, wherein the diameter of each wire outlet is 2-4 cm.
Preferably, in the step (3), the sponge shell: from upwards the cover at the surface of lithium cell down, place the top at the lithium cell with the sponge board that thickness is 2 ~ 4cm again, bee calling organ and supplementary lithium cell: set up two relative standing grooves on the sponge shell surface, inlay the standing groove with bee calling organ and supplementary lithium cell respectively in, waterproof case: from the surface of upwards cover at the sponge shell down, place the top at the lithium cell with the plastic slab that thickness is 2 ~ 3cm again, reuse glass to glue and fill the gap.
Preferably, the bottom outer surface of the buzzer is provided with an anode pin and a cathode pin, the anode pin is arranged on one side of the cathode pin, and the anode pin of the buzzer is connected with the anode post of the auxiliary lithium battery through a wire.
Preferably, in the step (4), the distance between the copper columns is 2-4 cm, and the length of the copper columns is 6-8 cm.
Compared with the prior art, the invention has the following beneficial effects:
1. the waterproof shell is manufactured through injection molding, and then the gap is filled with the glass cement, so that better water resistance can be realized, the waterproof capability of the lithium battery is improved, the internal lithium battery can be better protected from being damaged, and the installation performance of the lithium battery in use is improved;
2. the sponge shell is arranged between the waterproof shell and the lithium battery shell, so that the shock absorption can be performed on the lithium battery inside, and meanwhile, when the waterproof shell is damaged or water enters, the water can be absorbed, and the temporary protection effect is realized;
3. through the inside relative installation bee calling organ and the supplementary lithium cell at sponge shell, when waterproof housing damaged or intake, sponge shell absorbed moisture, switched on through hydrous sponge between bee calling organ and the supplementary lithium cell for supplementary lithium cell switches on bee calling organ, sends the police dispatch newspaper, carries out timely warning, avoids discovering the untimely normal use that influences the lithium cell.
Drawings
Fig. 1 is a flow chart of the overall structure of a lithium battery waterproofing method according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1, the method comprises the following steps:
(1) and manufacturing a sponge shell: measuring the size of the lithium battery, and manufacturing a sponge shell according to the size, wherein the manufacturing of the sponge shell comprises the following steps:
(1.1) mixing 100mL distilled water with crosslinking agent, foaming agent and plasticizer to obtain solution, adding konjac powder, dissolving in the above solution, stirring, wherein the foaming agent is NaHCO3The amount of the foaming agent is 2.80g/L, and the cross-linking agent is Na2CO3The dosage of the cross-linking agent is 4.0g/L, and the plasticizer is C24H38O4The plasticizer is 10.0 g/L;
(1.2) pouring the stirred mixed solution into a foaming mould to heat up, foaming and shaping, wherein the foaming mould is divided into an inner layer and an outer layer, the size of the inner layer is consistent with that of the lithium battery shell, the distance between the outer layer and the inner layer is 1.2mm, and the heating temperature is 100 ℃;
(2) and manufacturing a waterproof shell: using an injection molding machine to perform injection molding inside the injection mold, wherein the injection mold comprises: measure the outer size of foaming mold to according to size preparation injection mold, set up the outlet in the position that waterproof case corresponds positive negative pole of lithium cell respectively, the diameter of outlet is 3cm, the sponge shell: from upwards the cover at the surface of lithium cell down, place the sponge board that thickness is 3cm in the top of lithium cell, bee calling organ and supplementary lithium cell again: set up two relative standing grooves on the sponge shell surface, inlay the standing groove with bee calling organ and supplementary lithium cell respectively in, waterproof case: the outer surface of the sponge shell is sleeved with the plastic plate with the thickness of 2cm from bottom to top, the plastic plate is placed above the lithium battery, the gap is filled with glass cement, the outer surface of the bottom end of the buzzer is provided with an anode pin and a cathode pin, the anode pin is arranged on one side of the cathode pin, and the anode pin of the buzzer is connected with the anode column of the auxiliary lithium battery through a lead;
(3) waterproof installation: sequentially installing a sponge shell, a buzzer, an auxiliary lithium battery and a waterproof shell on the surface of the lithium battery;
(4) and sealing treatment: and inserting the copper columns into the wire outlet, and filling gaps between the shell and the copper columns by using glass cement, wherein the distance between the copper columns is 3cm, and the length of each copper column is 7 cm.
Example 2
As shown in fig. 1, the method comprises the following steps:
(1) and manufacturing a sponge shell: measuring the size of the lithium battery, and manufacturing a sponge shell according to the size, wherein the manufacturing of the sponge shell comprises the following steps:
(1.1) mixing 100mL distilled water with crosslinking agent, foaming agent and plasticizer to obtain solution, adding konjac powder, dissolving in the above solution, stirring, wherein the foaming agent is NaHCO3The amount of the foaming agent is 2.80g/L, and the cross-linking agent is Na2CO3The dosage of the cross-linking agent is 4.0g/L, and the plasticizer is C24H38O4The plasticizer is 10.0 g/L;
(1.2) pouring the stirred mixed solution into a foaming mould to heat up, foaming and shaping, wherein the foaming mould is divided into an inner layer and an outer layer, the size of the inner layer is consistent with that of the lithium battery shell, the distance between the outer layer and the inner layer is 2.0mm, and the heating temperature is 100 ℃;
(2) and manufacturing a waterproof shell: using an injection molding machine to perform injection molding inside the injection mold, wherein the injection mold comprises: measure the outer size of foaming mold to according to size preparation injection mold, set up the outlet in the position that waterproof case corresponds positive negative pole of lithium cell respectively, the diameter of outlet is 3cm, the sponge shell: from upwards the cover at the surface of lithium cell down, place the sponge board that thickness is 3cm in the top of lithium cell, bee calling organ and supplementary lithium cell again: set up two relative standing grooves on the sponge shell surface, inlay the standing groove with bee calling organ and supplementary lithium cell respectively in, waterproof case: the outer surface of the sponge shell is sleeved with the plastic plate with the thickness of 2cm from bottom to top, the plastic plate is placed above the lithium battery, the gap is filled with glass cement, the outer surface of the bottom end of the buzzer is provided with an anode pin and a cathode pin, the anode pin is arranged on one side of the cathode pin, and the anode pin of the buzzer is connected with the anode column of the auxiliary lithium battery through a lead;
(3) waterproof installation: sequentially installing a sponge shell, a buzzer, an auxiliary lithium battery and a waterproof shell on the surface of the lithium battery;
(4) and sealing treatment: and inserting the copper columns into the wire outlet, and filling gaps between the shell and the copper columns by using glass cement, wherein the distance between the copper columns is 3cm, and the length of each copper column is 7 cm.
Example 3
As shown in fig. 1, the method comprises the following steps:
(1) and manufacturing a sponge shell: measuring the size of the lithium battery, and manufacturing a sponge shell according to the size, wherein the manufacturing of the sponge shell comprises the following steps:
(1.1) mixing 100mL distilled water with crosslinking agent, foaming agent and plasticizer to obtain solution, adding konjac powder, dissolving in the above solution, stirring, wherein the foaming agent is NaHCO3The amount of the foaming agent is 2.80g/L, and the cross-linking agent is Na2CO3The dosage of the cross-linking agent is 4.0g/L, and the plasticizer is C24H38O4The plasticizer is 10.0 g/L;
(1.2) pouring the stirred mixed solution into a foaming mould to heat up, foaming and shaping, wherein the foaming mould is divided into an inner layer and an outer layer, the size of the inner layer is consistent with that of the lithium battery shell, the distance between the outer layer and the inner layer is 2.5mm, and the heating temperature is 100 ℃;
(2) and manufacturing a waterproof shell: using an injection molding machine to perform injection molding inside the injection mold, wherein the injection mold comprises: measure the outer size of foaming mold to according to size preparation injection mold, set up the outlet in the position that waterproof case corresponds positive negative pole of lithium cell respectively, the diameter of outlet is 3cm, the sponge shell: from upwards the cover at the surface of lithium cell down, place the sponge board that thickness is 3cm in the top of lithium cell, bee calling organ and supplementary lithium cell again: set up two relative standing grooves on the sponge shell surface, inlay the standing groove with bee calling organ and supplementary lithium cell respectively in, waterproof case: the outer surface of the sponge shell is sleeved with the plastic plate with the thickness of 2cm from bottom to top, the plastic plate is placed above the lithium battery, the gap is filled with glass cement, the outer surface of the bottom end of the buzzer is provided with an anode pin and a cathode pin, the anode pin is arranged on one side of the cathode pin, and the anode pin of the buzzer is connected with the anode column of the auxiliary lithium battery through a lead;
(3) waterproof installation: sequentially installing a sponge shell, a buzzer, an auxiliary lithium battery and a waterproof shell on the surface of the lithium battery;
(4) and sealing treatment: and inserting the copper columns into the wire outlet, and filling gaps between the shell and the copper columns by using glass cement, wherein the distance between the copper columns is 3cm, and the length of each copper column is 7 cm.
Table 1 is to in embodiment 1 ~ 3, (use the foaming mould of interval in the difference, can make different thickness sponge shells) under the sponge shell of different thickness, supplementary lithium cell duration and the warning time after waterproof shell damages, the test result is as follows:
thickness of sponge (cm) Duration (h) Alarm time (min)
Example 1 1.2 1121 5
Example 2 2.0 1681 8
Example 3 2.5 2322 12
As can be seen from the experimental data in Table 1, the waterproof method for the lithium battery of the invention has the advantages that as the thickness of the sponge increases, the larger the auxiliary lithium battery which can be installed is, the more the electric energy in the auxiliary lithium battery is, the electric energy of the battery is lost continuously, when the electric energy in the auxiliary lithium battery is insufficient, the current cannot be supplied to the buzzer, when the water discharge shell is damaged, the water flow enters the sponge shell, when the water in the sponge shell reaches a certain degree, the current flows out from the positive pole of the auxiliary lithium battery and enters the positive pole pin of the buzzer through the lead, then flows out from the negative pole pin of the buzzer, flows back to the negative pole of the auxiliary lithium battery through the sponge shell containing water to form a power-on loop, the buzzer is powered on to make a sound, as the thickness of the sponge shell increases, the water absorption time is longer, and the time from the water inlet of the sponge shell to the sound making of the buzzer increases continuously, further, as shown in Table 1, example 2 was the most preferable choice.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A waterproof method for a lithium battery is characterized by comprising the following steps:
(1) preparing a sponge shell: measuring the size of the lithium battery, and manufacturing a sponge shell according to the size;
(2) manufacturing a waterproof shell: using an injection molding machine to perform injection molding on the inside of the injection mold;
(3) waterproof installation: sequentially installing a sponge shell, a buzzer, an auxiliary lithium battery and a waterproof shell on the surface of the lithium battery;
(4) sealing treatment: inserting the copper column into the wire outlet, and filling a gap between the shell and the copper column by using glass cement;
in the step (3), the sponge shell: from upwards the cover at the surface of lithium cell down, place the top at the lithium cell with the sponge board that thickness is 2 ~ 4cm again, bee calling organ and supplementary lithium cell: set up two relative standing grooves on the sponge shell surface, inlay the standing groove with bee calling organ and supplementary lithium cell respectively in, waterproof case: sleeving the sponge shell on the outer surface of the sponge shell from bottom to top, placing a plastic plate with the thickness of 2-3 cm above the lithium battery, and filling gaps with glass cement;
the bottom surface of the buzzer is provided with an anode pin and a cathode pin, and the anode pin of the buzzer is connected with an anode post of the auxiliary lithium battery by using a lead.
2. The method of claim 1, further comprising: in the step (1), the sponge shell manufacturing step comprises the following steps:
(1.1) mixing 100mL of distilled water with a cross-linking agent, a foaming agent and a plasticizer to obtain a solution, adding konjac gum powder, dissolving in the solution, and stirring;
and (1.2) pouring the stirred mixed solution into a foaming mold, heating, foaming and shaping.
3. The method of claim 2, further comprising: in the step (1.1), the foaming agent is NaHCO3The amount of the foaming agent is 2.5-3.0 g/L, and the cross-linking agent is Na2CO3The dosage of the cross-linking agent is 4.0-4.3 g/L, and the plasticizer is C24H38O4The plasticizer is 9.6-10.5 g/L.
4. The method of claim 2, further comprising: in the step (1.2), the foaming mold is divided into an inner layer and an outer layer, the size of the inner layer is consistent with that of the lithium battery shell, the distance between the outer layer and the inner layer is 1.2-2.5 mm, and the temperature rise temperature is 100-110 ℃.
5. The method of claim 1, further comprising: in the step (2), injection molding: and measuring the size of the outer layer of the foaming mold, manufacturing an injection mold according to the size, and arranging wire outlets at positions of the waterproof shell corresponding to the anode and the cathode of the lithium battery respectively, wherein the diameter of each wire outlet is 2-4 cm.
6. The method of claim 1, further comprising: in the step (4), the distance between the copper columns is 2-4 cm, and the length of the copper columns is 6-8 cm.
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