CN213546442U - Cylinder battery is formula of inhaling backward and is annotated liquid battery box - Google Patents

Abstract

The utility model provides a cylinder battery is formula of resorption and is annotated battery box for liquid, box body including the flute profile, the bottom of box body is equipped with a plurality of circular battery fixed slots that are used for fixed battery, the center department of battery fixed slot is equipped with the imbibition hole. An annular sealing ring is arranged in the battery fixing groove, and a positioning hole for fixing the box body is formed in the outer edge of the top end of the box body. The utility model discloses battery case simple structure, convenient operation can realize the placing of big batch battery, has simplified the formula of resorption formula notes liquid process, has improved the notes liquid efficiency of electrolyte, can guarantee that the notes liquid volume is sufficient to the infiltration effect of electric core notes liquid has been improved; the electrolyte is prevented from entering the battery box, so that the pollution to the electrolyte and the battery core is avoided.

Description

Cylinder battery is formula of inhaling backward and is annotated liquid battery box

Technical Field

The utility model belongs to the technical field of lithium cell production, a cylinder battery is inhaled formula upside down and is annotated liquid battery box is related to.

Background

In cylinder battery production field, at present, advocate that the high efficiency is accomplished and is annotated a lot of adoption of enterprise of liquid is that negative pressure inverted suction type annotates liquid machine, let the inside negative pressure of inhaling into of battery case earlier, be connected battery case and electrolyte with the pipeline, make and form pressure differential between the inside and electrolyte place space of battery case, utilize this pressure differential to make the automatic battery case that inhales of electrolyte inside, accomplish automatic notes liquid. Such a battery pack has problems in that: the requirement on the sealing performance is high, the back suction type liquid injection can be realized only by pre-vacuumizing, in the liquid injection process, the inner cavity of the whole battery box can be soaked by electrolyte, the outer surface of a battery cell is also soaked in the electrolyte, the electrolyte is polluted, the outer surface of the battery cell is also polluted, and the cleaning is difficult. In addition, the existing battery box has a complex structure, so that the battery fixing and taking-out processes are complex, and the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem that prior art exists, provide a simple structure, easily operation and can improve the cylinder battery of annotating liquid efficiency suck-back formula and annotate liquid battery box.

Therefore, the utility model adopts the following technical scheme:

the utility model provides a cylinder battery is formula of resorption and is annotated battery box for liquid, includes the box body of flute profile, the bottom of box body is equipped with a plurality of circular battery fixed slots that are used for fixed battery, the center department of battery fixed slot is equipped with the imbibition hole.

Furthermore, an annular sealing ring is arranged in the battery fixing groove.

Furthermore, the outer edge of the top end of the box body is provided with a positioning hole for fixing the box body.

Furthermore, the battery fixing grooves are arranged in the box body in an array shape.

The beneficial effects of the utility model reside in that: the battery box has a simple structure, is convenient to operate, can realize the placement of batteries in large batches, simplifies the inverted liquid injection process, improves the liquid injection efficiency of electrolyte, can ensure the sufficient liquid injection amount, and improves the infiltration effect of the liquid injection of the battery core; the electrolyte is prevented from entering the battery box, so that the pollution to the electrolyte and the battery core is avoided.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

FIG. 3 is a diagram illustrating the usage of the present invention;

FIG. 4 is an enlarged view of part A of FIG. 3;

FIG. 5 is a top view of the structure of FIG. 3;

in the figure, 1-electrolyte tank, 2-box body, 3-vacuum cavity, 4-air extraction needle bottom plate, 5-air extraction needle, 6-vacuum source interface, 7-vacuum breaking valve, 8-electrolyte return tank, 9-electrolyte return valve, 10-filter screen, 11-positioning pin, 12-positioning hole, 13-battery fixing groove, 14-sealing ring, 15-liquid suction hole, 16-battery, 17-electrolyte.

Detailed Description

The technical solution of the present invention is further explained by the following specific examples.

As shown in fig. 1, a battery box for reverse-suction type liquid injection of a cylindrical battery comprises a groove-shaped box body 2, wherein a plurality of circular battery fixing grooves 13 for fixing the battery are formed in the bottom of the box body 2, the battery fixing grooves 13 are arranged in the box body 2 in an array shape, a liquid suction hole 15 is formed in the center of each battery fixing groove 13, and an annular sealing ring 14 is arranged in each battery fixing groove 13. The outer edge of the top end of the box body 2 is provided with a positioning hole 12 for fixing the box body 2.

When in use, the battery box can be matched with an electrolyte tank with a vacuumizing function for use, and the electrolyte tank can adopt the following structure:

as shown in fig. 2-5, a vacuum chamber 3 is arranged at the bottom of the electrolytic bath 1, the top of the vacuum chamber 3 is composed of an obliquely arranged suction needle bottom plate 4, a plurality of groups of suction needles 5 penetrate through and are fixed on the suction needle bottom plate 4, the bottom ends of the suction needles 5 are communicated with the vacuum chamber 3, the lengths of the suction needles 5 at different positions are different, but the top ends of all the suction needles 5 are in the same horizontal plane; one side of the vacuum cavity 3 is provided with a vacuum source interface 6 for connecting with vacuum-pumping equipment, and the bottom of the vacuum cavity is provided with a vacuum breaking valve 7. As an optimization, an electrolyte return tank 8 is formed in the electrolyte tank 1 at the lower side of the vacuum cavity 3, an electrolyte return valve 9 is arranged at the bottom of the electrolyte return tank 8, and a transverse filter screen 10 is arranged in the middle. Two sides of the top end of the electrolyte tank 1 are provided with vertical positioning pins 11 for fixing the battery box.

Utilize the utility model discloses the process that the cylinder battery filled liquid is carried out to the battery case as follows:

(1) adjusting the top ends of all the gas extraction needles 5 to be in the same horizontal plane, closing the electrolyte return valve 9 and the vacuum breaking valve 7, and injecting enough electrolyte into the electrolyte tank 1 to ensure that the liquid level is slightly lower than the top ends of the gas extraction needles 5;

(2) the head end of a cylindrical battery 16 is downwards clamped and fixed in a battery fixing groove 13 of a battery box, then the battery box filled with the battery 16 is placed into an electrolyte tank 1, a positioning hole 12 just penetrates through a positioning pin 11 when the battery box is placed, positioning and fixing are achieved, an air suction needle 5 penetrates through a liquid suction hole 15 and is inserted into the battery 16 from an inner hole of a battery core of the battery 16 in the process of placing the battery box, the top end of the air suction needle 5 can just touch the bottom of the battery 16 after the battery box is fixed through the height setting of the positioning pin 11 and the height setting of the air suction needle 5, and at the moment, the bottom of the battery box is completely immersed; due to the sealing of the sealing ring 14, the head ends of the batteries 16 are immersed into the electrolyte to a certain depth, and liquid sealing is performed by using the electrolyte, so that a small sealed space is formed inside each battery 16;

(3) connecting a vacuumizing device with a vacuum source interface 6, continuously vacuumizing a vacuum cavity 3, continuously pumping gas in a battery 16 away through an air pumping needle 5 to form negative pressure, and sucking electrolyte into the battery 16 through a liquid sucking hole 15 under the action of the negative pressure until the whole battery 16 is soaked in the electrolyte in an all-round and dead-angle-free manner;

(4) closing the vacuum pumping equipment, standing for a certain time to fully wet a pole piece and a diaphragm in the battery 16, opening the vacuum breaking valve 7 to enable air to enter the vacuum cavity 3, recovering the air pressure inside and outside the battery cell 16 to be consistent, then taking out the battery box, completing the liquid injection process, and turning to the next battery production process;

(5) after the liquid injection is completed, the electrolyte return valve 9 is opened, the electrolyte in the electrolyte tank 1 continuously flows into the electrolyte return tank 8 along the air suction needle bottom plate 4, the electrolyte flows out of the electrolyte return valve 9 after being filtered by the filter screen 10 and is recovered, and dust residues in the electrolyte are filtered by the filter screen 10, so that the electrolyte is recycled.

Of course, the structure of the electrolyte tank is only an example, and other electrolyte tank structures matched with the battery box of the utility model can be made as long as the similar vacuum-pumping function can be satisfied. For example, the electrolytic solution return tank may not be provided, or the vacuum chamber may be provided separately from the electrolytic solution tank.

Claims (4)

1. The utility model provides a cylinder battery is formula of resorption and is annotated battery box for liquid which characterized in that, includes the box body of flute profile, the bottom of box body is equipped with a plurality of circular battery fixed slots that are used for fixed battery, the center department of battery fixed slot is equipped with the imbibition hole.

2. The battery box for the reverse-suction type liquid injection of the cylindrical battery as claimed in claim 1, wherein an annular sealing ring is disposed in the battery fixing groove.

3. The battery case for the reverse-suction type liquid injection of the cylindrical battery as claimed in claim 1, wherein a positioning hole for fixing the case body is formed at the outer edge of the top end of the case body.

4. The battery box for the reverse-suction type liquid injection of the cylindrical battery according to claim 1, wherein the battery fixing grooves are arranged in an array in the box body.

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