CN213340527U

CN213340527U - Battery with a battery cell

Info

Publication number: CN213340527U
Application number: CN202021026818.8U
Authority: CN
Inventors: 叶敏华
Original assignee: Chung Pak Guangdong Battery Industrial Co ltd; CHUNG PAK INVESTMENT Ltd
Current assignee: Chung Pak Guangdong Battery Industrial Co ltd; CHUNG PAK INVESTMENT Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-06-01
Anticipated expiration: 2030-06-05

Abstract

The utility model provides a battery, include as negative pole and one end open-ended zinc section of thick bamboo and set up in the inside anodal electric core of being regarded as of zinc section of thick bamboo, wherein, further including the end bowl of moulding plastics out with the plastic material, end bowl sets up in the zinc section of thick bamboo bottom and lies in the lower surface of electric core. The utility model discloses a kraft paper that earlier usefulness is replaced to the plastic material that can mould plastics, forms the high end bowl of the clean degree in surface through the mode of moulding plastics, prevents that leakage performance is improved greatly.

Description

Battery with a battery cell

Technical Field

The utility model belongs to the technical field of the battery, more specifically relates to an adopt battery of end bowl that plastic material was moulded plastics.

Background

The zinc-manganese battery has been developed for over 100 years, is characterized by convenient use and low price, and is the battery with the largest output and the most extensive use in primary batteries.

The zinc-manganese cell is generally composed of positive pole powder column, negative pole zinc cylinder, carbon rod, diaphragm and shell, and the diaphragm part is composed of pulp layer paper and bottom bowl.

The pulp layer paper is generally coated with a pulp layer by base paper, has the functions of isolating and conducting ions, is prepared by firstly preparing starch and other materials into paste, then uniformly coating the paste on the base paper by a machine, then dividing the paste into strips and blocks, and rolling the strips into a zinc cylinder so as to ensure that the strips are attached to the wall of the zinc cylinder;

after the paper pulp is put in, the bottom bowl is added from the upper part to isolate the bottom of the zinc cylinder.

In the prior art, kraft paper is used as a bottom bowl, kraft paper is firstly divided into strips, then the strips are placed on a machine, the strips are punched into round sheets, then the round sheets are pressed into a bowl shape, then the round sheets are pushed into a zinc cylinder and sent to the bottom of the zinc cylinder, the round sheets are tightly attached to the bottom of the zinc cylinder, and the pulp layer paper is spread by the edge of the bowl to form a cylinder shape with the pulp layer paper, so that the isolation effect is achieved.

In the process of making kraft paper into a bottom bowl and putting the bottom bowl into a zinc cylinder bottom, a plurality of working procedures are needed, namely, firstly, splitting, then punching into round pieces, pressing the round pieces into a bowl shape, and pushing the bowl shape into the zinc cylinder. The notch and the burr appear easily in the process of punching the disk, will press into the bowl with planar paper when pressing the disk into the bowl, it is inhomogeneous to appear the crease easily, if it is inhomogeneous to appear the crease, then the later process can appear leaking the phenomenon when adding anodal powder and electrolyte, and the security performance is low.

Because a plurality of processes are integrated together, the efficiency is low, the speed of the processes can not be matched with that of the previous and next processes, the rapid automatic production can not be realized, and the production efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model provides a battery, its adoption can carry out the plastic material of moulding plastics and replace the kraft paper of using earlier, forms the high end bowl of surface neatness through the mode of moulding plastics, prevents that the leakage performance is improved greatly.

In order to achieve the above object, the utility model provides a battery, include as negative pole and one end open-ended zinc section of thick bamboo and set up in the inside anodal electric core of conduct of zinc section of thick bamboo, its characterized in that further includes the end bowl of moulding plastics out with the plastic material, and wherein, end bowl sets up bottom in the zinc section of thick bamboo and is located the lower surface of electric core.

According to another embodiment of the present invention, the thickness of the bottom bowl is 0.05-1mm, preferably 0.2-0.4mm.

According to another embodiment of the present invention, the bottom edge thickness of the bottom bowl is the same as the bowl edge thickness of the bottom bowl.

According to another embodiment of the present invention, the height of the bottom bowl is 1-5mm, preferably 2-3mm, and the joint between the bottom edge of the bottom bowl and the bowl edge is provided with an arc angle of 0.5-5.0mm, preferably 0.5-1.5mm.

According to another embodiment of the present invention, the plastic material for forming the bottom bowl by injection molding comprises at least one of polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP) and polyethylene terephthalate resin type B (PET).

According to the utility model discloses a another kind of embodiment, the upper portion bowl mouth diameter of end bowl is greater than the diameter of zinc section of thick bamboo inner wall, and the difference scope between the upper portion bowl mouth diameter of end bowl and the diameter of zinc section of thick bamboo inner wall is 0.05-0.50mm, and the diameter is less than the diameter of zinc section of thick bamboo inner wall at the bottom of the lower part bowl of end bowl, and the difference scope between the diameter at the bottom of the lower part bowl of end bowl and the diameter of zinc section of thick bamboo inner wall is 0.05-0.50mm.

Furthermore, the difference range between the diameter of the upper bowl opening of the bottom bowl and the diameter of the inner wall of the zinc cylinder is 0.20-0.30mm, and the difference range between the diameter of the lower bowl bottom of the bottom bowl and the diameter of the inner wall of the zinc cylinder is 0.20-0.30mm.

The utility model discloses possess following beneficial effect:

the utility model discloses a bottom bowl in battery adopts the mode of moulding plastics to obtain, and the bottom bowl that the mode of moulding plastics obtained has the advantage that thickness homogeneous, surface neatness are high, has promoted the battery prevent leaking the performance.

The utility model discloses a mode of moulding plastics obtains end bowl, can realize the quick automatic batch production of battery, compares in the tradition divide the strip, dash the disk, press processes such as bowl, improved efficiency greatly, can with the process speed match around, whole battery preparation process accelerates greatly, has simplified equipment simultaneously, has saved the cost.

Drawings

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

fig. 2 is a longitudinal cross-sectional view of the bottom bowl of the present invention.

Detailed Description

The present invention will now be described with reference to the accompanying drawings.

As shown in fig. 1, the battery of the present invention includes a zinc cylinder 1 as a negative electrode and having an open end, a positive electrode cell 2 disposed inside the zinc cylinder 1, a bottom bowl 3 disposed at the bottom of the zinc cylinder 1 and located at the lower surface of the cell 2, a bottom cap 4 disposed below the zinc cylinder 1, and a bottom washer 5 disposed at the lower side edge of the bottom cap 4, a plug body 6 disposed at the upper surface of the cell 2, a carbon rod 7 passing through the plug body 6 and partially inserted into the cell 2, a top cap 8 disposed at the upper portion of the plug body 6 and the carbon rod 7, and a top washer 9 disposed at the top edge of the top cap 8.

Wherein, the bottom bowl is obtained by plastic material injection molding.

Specifically, the bottom bowl 3 in the present invention is prepared in the following manner:

according to the design requirement size of the bottom bowl 3, a bowl shape is formed, for example, an R20 battery is taken, the diameter of the inner wall of the zinc cylinder 1 is 30mm, the bottom bowl 3 shown in figure 2 is formed by injection molding of Polyethylene (PE) materials or polypropylene (PP) materials, the diameter L1 of the upper bowl opening of the bottom bowl 3 is 30.2mm, the diameter L2 of the bottom bowl bottom of the lower part of the bottom bowl 3 is 29.8mm, the height H of the bottom bowl 3 is 2.8mm, the thickness L3 of the bottom bowl 3 is 0.3mm, an arc angle R is arranged at the joint of the bottom edge of the bottom bowl 3 and the bowl edge, and the size of the arc angle R is 1mm.

Namely, the diameter of the upper bowl opening of the bottom bowl 3 is larger than that of the inner wall of the zinc cylinder 1, and the diameter of the lower bowl bottom of the bottom bowl 3 is smaller than that of the inner wall of the zinc cylinder 1, so that the bottom bowl 3 can be inserted into the bottom of the zinc cylinder 1 through the upper opening of the zinc cylinder 1, and the pulp paper 10 on the inner wall side of the zinc cylinder 1 is spread through the bottom bowl 3;

wherein, the outer surface of the zinc cylinder 1 is also sleeved with a polyvinyl chloride sleeve 11, the polyvinyl chloride sleeve 11 simultaneously coats the zinc cylinder 1 and the rubber plug body 6, and the outer surface of the zinc cylinder 1 is also provided with a leakage-proof film 12.

With reference to fig. 1, a manufacturing process of the battery of the present invention is described, which specifically includes:

a0, forming a bottom bowl with uniform thickness as shown in figure 2 by adopting a Polyethylene (PE) material or a polypropylene (PP) material in an injection molding mode;

A. fixing the zinc cylinder with an opening at one end upwards, cutting pulp paper into strips, loading the strips on a pulp machine, cutting the strips into sections according to requirements, and inserting the strips into the inner wall side of the zinc cylinder through the machine;

B. directionally and quantitatively conveying the injection-molded bottom bowls to a bottom bowl machine in a vibration disc mode, inserting the bottom bowls from an upper opening of the zinc cylinder to the bottom of the zinc cylinder through mechanical action of the bottom bowl machine, and opening pulp paper through the bottom bowls;

C. the zinc cylinder is charged with a cell (carbon powder column) comprising, by weight, 40 to 50% manganese dioxide, 10 to 20% carbon and 25 to 35% water, and having a weight of 45 to 65g.

D. Placing a powder pressing paper ring 13 on the upper surface of the battery cell, vertically inserting part of carbon rods into the battery cell, and pressurizing the surface of the powder pressing paper ring 13 to ensure that the battery cell is tightly attached to the pulp paper and the bottom bowl;

E. coating a proper amount of asphalt or epoxy resin sealant on the top of the carbon rod and the opening part of the zinc cylinder, inserting the rubber plug body and performing compaction treatment;

F. firstly sticking a leakage-proof film on the outer surface of the zinc cylinder, and then sleeving a polyvinyl chloride sleeve on the outer surface of the zinc cylinder, wherein the polyvinyl chloride sleeve simultaneously coats the zinc cylinder and the rubber plug body;

E. putting a bottom cap and a bottom gasket at the bottom of the zinc cylinder, and shrinking through a heat shrinkage furnace;

G. pressing a top cap on the top of the carbon rod, and placing a top gasket on the surface of the top cap;

H. the iron shell 14 is sleeved on the battery and sealed by a sealing machine to form a complete R20 battery.

The utility model discloses the battery that prepares has possessed assembly efficiency height, prevents the advantage that the leakage performance is good, below respectively with the battery that contains Polyethylene (PE) material and make end bowl be experimental group one, with the battery experimental group two that contains polypropylene (PP) material and make end bowl, use the battery that traditional kraft paper mode supported end bowl to test for comparison group, the test parameter includes assembly speed, just makes no-load voltage, deposits 30 days no-load voltage, cost, detailed test result as follows:

it is thus clear that, adopt the plastic material through the bottom bowl of the mode preparation of moulding plastics, can promote the preparation efficiency of bottom bowl greatly to the production speed of process around the matching really realizes automated production, simultaneously, the battery that adopts to contain the plastic material and make bottom bowl through the mode of moulding plastics has more outstanding storage performance, voltage drop still less, in addition reduced the cost of production by a wide margin, effectively banned the branch strip process of bowl at the bottom of traditional preparation, towards disk process, press into the bowl process.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. Any person skilled in the art can make some modifications without departing from the scope of the invention, i.e. all equivalent modifications made according to the invention shall be covered by the scope of the invention.

Claims

1. The utility model provides a battery, including as negative pole and one end open-ended zinc section of thick bamboo with set up in the inside anodal electric core of regard as of zinc section of thick bamboo, its characterized in that further includes the end bowl of moulding plastics out with the plastic material, wherein, end bowl set up in bottom in the zinc section of thick bamboo is located the lower surface of electric core.

2. The battery of claim 1, wherein the bottom bowl has a thickness of 0.05 mm to 1mm.

3. The battery of claim 2, wherein a bottom edge thickness of the bottom bowl is the same as a bowl edge thickness of the bottom bowl.

4. The battery of claim 1, wherein the bottom bowl has a height of 1-5mm, and a circular arc angle is formed at a joint of the bottom edge of the bottom bowl and the bowl edge, and the size of the circular arc angle is 0.5-5.0mm.

5. The battery of claim 1, wherein the diameter of the upper bowl opening of the bottom bowl is larger than the diameter of the inner wall of the zinc can, and the difference between the diameter of the upper bowl opening of the bottom bowl and the diameter of the inner wall of the zinc can ranges from 0.05 mm to 0.50mm, the diameter of the lower bowl bottom of the bottom bowl is smaller than the diameter of the inner wall of the zinc can, and the difference between the diameter of the lower bowl bottom of the bottom bowl and the diameter of the inner wall of the zinc can ranges from 0.05 mm to 0.50mm.

6. The battery of claim 5, wherein the difference between the diameter of the upper bowl opening of the bottom bowl and the diameter of the inner wall of the zinc can is in the range of 0.20-0.30mm, and the difference between the diameter of the lower bowl bottom of the bottom bowl and the diameter of the inner wall of the zinc can is in the range of 0.20-0.30mm.