CN217114686U

CN217114686U - Isolation ring suitable for battery with negative cover top as negative electrode

Info

Publication number: CN217114686U
Application number: CN202220569965.2U
Authority: CN
Inventors: 刘荣海; 薛祥峰; 蔡鑫; 张志明; 白青钰
Original assignee: Fujian Nanping Nanfu Battery Co Ltd
Current assignee: Fujian Nanping Nanfu Battery Co Ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-08-02
Anticipated expiration: 2032-03-16

Abstract

The utility model aims at providing an isolation ring suitable for use battery of negative pole capping as negative pole, including the isolation ring body seted up a centre bore along its central axis on the isolation ring body, the lower extreme of centre bore inserts the end for the negative pole lid, the upper end of isolation ring body upwards extends along its circumference and forms annular last extension segment, go up extension segment and extend annular insulating negative pole capping overlap joint piece along its circumference towards its central axis circumference the circumference is provided with two at least breachs on the inner wall of negative pole capping overlap joint piece, the surface of breach comprises continuous curved surface or curved surface and planar combination. By adopting the isolating ring to assemble the battery, the anode and the cathode of the battery can be prevented from being reversely connected; moreover, the possibility that the lap joint sheet at the top of the negative electrode cover is scratched to warp or even break can be reduced to a certain degree, the effect of preventing reverse connection is avoided being influenced, and in addition, the battery isolation ring is more attractive.

Description

Isolation ring suitable for battery with negative cover top as negative electrode

Technical Field

The utility model relates to a battery part field especially relates to an isolation ring suitable for use as the battery of negative pole with negative pole lid capping.

Background

The commonly used batteries of the internet of things equipment comprise an alkaline manganese battery, a nickel-cadmium battery, a lithium ion battery and the like, and a positive terminal and a negative cover are respectively assembled at two ends of a positive steel shell. In some types of batteries, an annular battery groove is formed between the peripheral wall of the negative cover and the positive steel shell after sealing, and a battery isolating ring is embedded in the battery groove in order to prevent dirt from entering the battery groove to cause slow short circuit of the battery.

The highest level of the existing battery separator is usually not higher than the top of the negative cover. When a user installs a battery, the positive and negative electrodes of the battery in the battery compartment are connected reversely (for example, the negative electrode covers of two batteries are in butt joint) due to negligence, even if the battery is placed in the storage box, once the positive and negative electrodes of one of the batteries connected in sequence are connected reversely, when the batteries form a battery loop, the reversely connected batteries generate charging current, self-discharge hydrogen evolution reaction in the batteries is intensified, so that the air pressure in the batteries is increased, further electrolyte flows out, the electrolyte can corrode a battery frame of an electric appliance or even flow onto a circuit board to further corrode the circuit board, so that the electric appliance is damaged, and the health of a human body is threatened.

In order to prevent the reverse connection of the batteries, the conventional solution is to modify a reverse connection protection circuit of a circuit of the battery compartment, but the solution is only suitable for the situation that users eliminate old battery compartment equipment. The problem of reverse connection of the battery can be fundamentally solved only by improving the battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an isolation ring suitable for use as the battery of negative pole with negative pole lid caping, it can solve the battery transposition problem, improves negative pole lid caping overlap joint piece tip perk problem simultaneously.

The utility model provides an isolation ring suitable for use battery of negative pole capping as negative pole, includes the isolation ring body a centre bore has been seted up along its central axis on the isolation ring body, the lower extreme of centre bore is the negative pole lid and inserts the end, the upper end of isolation ring body upwards extends along its circumference and forms annular last extension segment, the inner wall of going up the extension segment stretches out annular insulating negative pole capping overlap joint piece towards its central axis along its circumference the circumference is provided with two at least breachs on the inner wall of negative pole capping overlap joint piece, the surface of breach comprises continuous curved surface or curved surface and planar combination.

Because the utility model discloses an annular insulating negative pole lid top overlap joint piece extends towards its central authorities side along its circumference on the isolation ring body, make the negative pole lid when inserting negative pole lid top overlap joint piece position department the negative pole lid top overlap joint piece can overlap joint at the surface of the lid top of negative pole lid, because the negative pole lid of battery is the battery negative pole, avoid the lid top of the negative pole lid of a battery and the lid top of the negative pole lid of another battery to take place overall contact butt joint and the phenomenon that the positive negative pole of battery connects conversely to appear; in addition, at least two gaps are arranged on the inner wall of the cathode cover top lap joint sheet circumferentially, and the surface of each gap is composed of a continuous curved surface or a combination of the curved surface and a plane, so that the possibility of warping or even breaking of the cathode cover top lap joint sheet caused by scraping can be reduced to a certain extent, the influence on the anti-reverse connection effect is avoided, the stress in the injection molding and assembling process is prevented, and the breaking is prevented; in addition, the battery isolation ring is more attractive.

Preferably, each negative electrode cover top overlapping plate is arranged along the radial extension of the upper extension section.

In a specific implementation process, the negative electrode cover is coaxially inserted and fixed in the central hole of the isolation ring body, the negative electrode cover comprises a cover top and a peripheral wall, and the lower surface of the overlapping piece of the cover top of the negative electrode cover is pressed against the upper surface of the cover top of the negative electrode cover. In addition, the outer side of the peripheral wall of the negative electrode cover is coaxially sleeved with a positive electrode shell, an annular groove is formed between the peripheral wall of the negative electrode cover and the positive electrode shell, and the lower edge of the isolation ring body is inserted into the annular groove. And one end of the positive electrode shell, which is far away from the negative electrode cover, is also provided with a positive electrode terminal.

Preferably, the minimum diameter of the circumference enclosed by each negative electrode cover top overlapping plate is larger than the diameter of the positive electrode terminal, so that the positive electrode terminal of one battery can be normally connected with the cover top of the negative electrode cover of another battery in a butt joint and series connection mode.

Preferably, the spacer body extends outwards along the radial direction of the outer periphery thereof to form a positive electrode shell overlapping sheet.

Preferably, the isolation ring body, the upper extension section and the cathode cover top lap joint sheet are of an integrally formed structure.

Drawings

Fig. 1 is a longitudinal sectional view of a separator suitable for a battery of example 1 having a negative electrode cap as a negative electrode;

fig. 2 is a plan view of a separator applied to a battery having a negative electrode cap as a negative electrode in example 1;

fig. 3 is a top view structural view of a separator applied to a battery having a negative electrode lid top as a negative electrode according to example 2;

fig. 4 is a schematic longitudinal sectional view of the assembly structure of the separator and the negative electrode cap and the positive electrode case of example 1 or example 2;

wherein, the chain line in fig. 1 and 4 is the central axis of the isolation ring body, and the dotted line in fig. 2 and 3 is the inner contour line of the isolation ring body.

Detailed Description

The following describes in detail a preferred embodiment of the present invention, which is suitable for a separator of a battery having a negative electrode cover with a cap top as a negative electrode, with reference to the accompanying drawings:

example 1

With reference to fig. 1 and 2, a separator suitable for a battery using a cap top 31 of a negative cap 30 as a negative electrode includes a separator body 10, the separator body 10 is provided with a central hole 100 along a central axis thereof, a lower end of the central hole 100 is a negative cap insertion end 101 to form an annular upper extension section, an upper end of the separator body 10 extends upwards along a circumferential direction thereof to form an annular upper extension section 11, an inner wall of the upper extension section 11 extends out of an annular insulating negative cap top overlapping plate 20 towards a central side thereof along the circumferential direction thereof, at least two notches 50 are circumferentially provided on an inner wall of the negative cap top overlapping plate 20, and a surface 21 of each notch 50 is composed of two continuous concave curved surfaces.

Example 2

As shown in fig. 3, the separator applied to the battery of example 2 having the cap top 31 of the negative electrode cap 30 as the negative electrode differs from that of example 1 in that: the surface 21 of the notch 50 consists of two consecutive convex curved surfaces.

As shown in fig. 4, the battery (for example, alkaline battery) is assembled by using the separators of examples 1 and 2, because the present invention is that the separator body 10 extends a ring-shaped insulating negative cover top strap 20 towards its central side along its circumferential direction, so that the negative cover 30 will be lapped on the outer surface of the cover top 31 of the negative cover 30 when being inserted into the position of the negative cover top strap 20, and because the negative cover top 31 of the battery is the negative electrode of the battery, the phenomenon that the positive and negative electrodes of the battery are reversely connected due to the full contact and butt of the cover top 31 of the negative cover 30 of one battery and the cover top 31 of the negative cover 30 of another battery is avoided; moreover, the upper extension section 11 and the negative cover top overlapping tab 20 have a good fitting effect with the negative cover 30, in addition, at least two notches are arranged on the inner wall of the negative cover top overlapping tab circumferentially, the surfaces of the notches are composed of continuous curved surfaces or a combination of the curved surfaces and planes, and compared with the situation that the surfaces of the notches are only composed of planes, the possibility that the negative cover top overlapping tab 20 is scratched to cause tilting or even breakage can be reduced to a certain extent, the reverse connection prevention effect is prevented from being influenced, the stress in the injection molding and assembling process is prevented, and the breakage is prevented; in addition, the battery isolation ring is more attractive.

Of course, the surface 21 of the notch 50 of the present invention may also be composed of a combination of continuous curved surfaces and flat surfaces.

Preferably, as shown in fig. 1 to 4, each of the negative electrode cap top tabs 20 is extended in a radial direction of the upper extension 11. Of course, there may be a certain included angle between the extending direction of the lap joint of the top of the negative cover and the radial direction of the upper extending section 11.

In a specific implementation process, as shown in fig. 4, the negative electrode cover 30 is coaxially inserted and fixed in the central hole 100 of the separator body 10, the negative electrode cover 30 includes a cover top 31 and a peripheral wall 32, and a lower surface of the negative electrode cover top strap 20 is pressed against an upper surface of the cover top 31 of the negative electrode cover 30. In addition, as shown in fig. 4, a positive electrode shell 40 is coaxially sleeved outside the peripheral wall 32 of the negative electrode cover, an annular groove is formed between the peripheral wall 32 of the negative electrode cover and the positive electrode shell 40, and the lower edge of the isolation ring body 10 is inserted into the annular groove. The end of the positive casing 40 facing away from the negative cover 30 is also provided with a positive terminal (of conventional construction, not shown).

Preferably, the minimum diameter of the circumference enclosed by each negative electrode cap top strap 20 is larger than the diameter of the positive electrode terminal, so that the positive electrode terminal of one battery can be normally connected in butt joint with the cap top 31 of the negative electrode cap 30 of another battery in series.

Preferably, as shown in fig. 1 to 4, the separator body 10 extends outward in the radial direction of the outer circumference thereof with a positive can overlapping tab 60.

Preferably, as shown in fig. 1 and 4, the separator body 10, the upper extension 11, and the negative cap top strap 20 are integrally formed.

It should be noted that the number of the negative electrode cap top tabs 20 is not limited to three, and may be two, four, or more than five.

The utility model discloses right the utility model belongs to the technical field of the ordinary skilled person, do not deviating from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides an isolation ring suitable for use battery of negative pole lid capping as the negative pole, includes the isolation ring body a centre bore has been seted up along its central axis on the isolation ring body, the lower extreme of centre bore is the negative pole lid and inserts the end, its characterized in that: the upper end of cage body upwards extends along its circumference and forms annular last extension, the inner wall of going up the extension extends annular insulating negative pole lid top overlapping piece towards its central authorities lateral extension along its circumference the circumference is provided with two at least breachs on the inner wall of negative pole lid top overlapping piece, the surface of breach comprises continuous curved surface or curved surface and planar combination.

2. The separator according to claim 1, wherein said separator comprises: and each negative electrode cover top lap joint sheet is arranged along the radial extension of the upper extension section.

3. The separator according to claim 1, wherein said separator comprises: the cathode cover is coaxially inserted into and fixed in the central hole of the isolation ring body, the cathode cover comprises a cover top and a peripheral wall, and the lower surface of the cathode cover top lap joint sheet is pressed against the upper surface of the cover top of the cathode cover.

4. The separator according to claim 3, wherein said separator comprises: the outer side of the peripheral wall of the negative electrode cover is coaxially sleeved with a positive electrode shell, an annular groove is formed between the peripheral wall of the negative electrode cover and the positive electrode shell, and the lower edge of the isolation ring body is inserted into the annular groove.

5. The separator according to claim 4, wherein said separator comprises: one end of the positive electrode shell, which is far away from the negative electrode cover, is also provided with a positive electrode terminal; the minimum diameter of the circumference enclosed by the negative electrode cover top lapping sheets is larger than the diameter of the positive electrode terminal.

6. The separator according to claim 1, wherein said separator comprises: the isolation ring body extends outwards along the radial direction of the periphery of the isolation ring body to form a positive shell overlapping piece.

7. The separator according to claim 1, wherein said separator comprises: the isolation ring body, the upper extension section and the cathode cover top lap joint sheet are of an integrally formed structure.

8. The separator according to claim 1, wherein said separator comprises: the notches are uniformly arranged on the inner wall of the negative electrode cover top overlapping plate.