CN212810081U

CN212810081U - Guide pin structure of lithium ion capacitor

Info

Publication number: CN212810081U
Application number: CN202021789103.8U
Authority: CN
Inventors: 杨斌; 胡世勇; 李辉; 侯保辉; 张志伟
Original assignee: Ningbo Burstcap Energy Technology Co ltd
Current assignee: Hesheng Technology (Ningbo) Co.,Ltd.
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-03-26
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a lithium ion capacitor's guide pin structure belongs to guide pin technical field, include: the guide pin comprises a lug, a connecting part and a leading-out part which are connected in sequence; the side of auricle is equipped with the groove limit and passes through the rounding department that the radius was handled, passes through first fillet transition between the side of going up of groove limit and auricle, passes through the second fillet transition between rounding department and the groove limit, passes through the third fillet between the downside of rounding department and auricle. The utility model discloses a production of burr source control burr at auricle edge is specifically through in auricle stamping process to the physical method, carry out radius technology processing in one side of side, the opposite side carries out the groove limit technology processing, guarantee that the upper and lower both sides of auricle side all keep smooth, thereby when reducing the stamping process degree of difficulty, the production of sufficient control burr, the auricle edge can not cause the paper diaphragm to appear damaged after contacting with the paper diaphragm, and then improved the whole qualification rate of product and reduced the self discharge of product.

Description

Guide pin structure of lithium ion capacitor

Technical Field

The utility model belongs to the technical field of the guide pin, concretely relates to lithium ion capacitor's guide pin structure.

Background

The lead type capacitor is one of indispensable electronic components on electrical equipment, and the kind includes film, aluminum electrolytic capacitor used for filtering, supporting and protecting circuit, super capacitor and lithium ion capacitor used for high-power discharge, internet of things communication and standby power supply, and whichever kind of capacitor needs to be connected with circuit board or load through guide pin when in use.

The guide pin of lithium ion capacitor is as a novel power type device, has super capacitor's low resistance and lithium cell high capacity, low self-discharge's characteristic concurrently, and extensive being applied to on aspects such as intelligence three meters, ETC, thing networking communication, the qualification rate and the reliability of lithium ion capacitor course of working are being influenced to the guide pin quality as connecting.

The lithium ion capacitor needs to meet performance requirements of service life, rate discharge and the like, so a cellulose paper diaphragm is selected as a diaphragm material, but the paper diaphragm has the defect of insufficient transverse and longitudinal mechanical strength, so that the paper diaphragm is easily subjected to local or microscopic damage in the production processes of winding, assembling and the like of the lithium ion capacitor, and finally, the self-discharge of a product is too high or short circuit failure is caused. It should be noted that the above phenomenon mainly occurs at the peripheral diaphragm of the tab, so the structural design of the lead-type guide pin for the lithium ion capacitor is important to ensure the reliability of the product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a can avoid the paper diaphragm of auricle contact department to appear damaged lithium ion capacitor's guide pin structure.

The purpose of the utility model can be realized by the following technical proposal:

a pin structure of a lithium ion capacitor, comprising:

the guide pin comprises a lug, a connecting part and a leading-out part which are connected in sequence;

the side of auricle is equipped with the trough edge and the radius department of handling through the radius, the trough edge with transition through first fillet between the side of going up of auricle, radius department with transition through the second fillet between the trough edge, radius department with transition through the third fillet between the downside of auricle.

As a further improvement, the middle of the tail end of the connecting part is outwardly provided with a convex part, and the head end of the lug plate is inserted into the convex part and is connected with the forming part.

As a further improvement of the present invention, the head end of the connecting portion and the tail end of the lead-out portion are fixedly connected by a welding portion, and the lug, the connecting portion and the lead-out portion are located on the same axis.

As a further improvement of the present invention, the ear piece is flat, and the two corners of the ear piece tail end are chamfered.

As a further improvement of the present invention, the connecting portion and the lead-out portion are of a cylindrical structure, and the diameter of the lead-out portion is smaller than that of the connecting portion.

As a further improvement of the utility model, the first fillet dimensional tolerance is 0.5-0.7mm, the second fillet dimensional tolerance is 0.7-0.9mm, and the third fillet dimensional tolerance is 0.4-0.6 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a production of burr source control burr at auricle edge is specifically through in auricle stamping process to the physical method, carry out radius technology processing in one side of side, the opposite side carries out the groove limit technology processing, guarantee that the upper and lower both sides of auricle side all keep smooth, thereby when reducing the stamping technology degree of difficulty, the production of sufficient control burr, make auricle edge and paper diaphragm after contacting, can not cause the paper diaphragm to appear damaged, and then improved the whole qualification rate of product and reduced the self discharge of product.

2. The utility model discloses be circular-arc setting with the contact surface of first fillet, second fillet and third fillet and paper diaphragm, guarantee can not cause the damage to the diaphragm at auricle and paper diaphragm contact in-process, simultaneously, circular-arc setting has the volume that has more closely under the size of same length and width for setting up on plane, inclined plane, can reduce the pressure that causes the paper diaphragm from this.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the embodiment of FIG. 1 taken along A-A;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

fig. 4 is a partially enlarged view of the connection portion of the tab of fig. 1.

In the figure, 100, guide pin; 110. a tab; 111. a groove edge; 112. rounding off; 120. a connecting portion; 121. a convex portion; 130. a lead-out section; 140. and (7) welding the parts.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-4, the utility model provides a guide pin 100 structure of lithium ion capacitor, including: a guide pin 100, a tab 110, a connecting portion 120, and a lead-out portion 130.

The guide needle 100 comprises a tab 110, a connecting part 120 and a leading-out part 130 which are connected in sequence, wherein, two sides of the lug plate 110 are respectively provided with a groove edge 111 and a rounding part 112 processed by the rounding part 112, the groove edge 111 is close to the upper side surface of the lug plate 110, the rounding part 112 is close to the lower side surface of the lug plate 110, in addition, the slot edge 111 and the upper side surface of the lug plate 110 are transited through a first round angle, the rounding position 112 and the slot edge 111 are transited through a second round angle, the rounding position 112 and the lower side surface of the lug plate 110 are transited through a third round angle, so that the upper side and the lower side of the side edge of the lug plate 110 are kept smooth, thereby reducing the difficulty of the stamping process, fully controlling the generation of burrs at the burr source of the edge of the lug 110, after the edge of the lug 110 is contacted with the paper diaphragm, the paper diaphragm is not damaged, the overall qualification rate of the product is improved, and the self-discharge of the product is reduced.

In addition, in the present embodiment, the first rounded corner is represented by R1, the second rounded corner is represented by R2, and the third rounded corner is represented by R3, specifically, the dimensional tolerance of the first rounded corner R1 is 0.5-0.7mm, the dimensional tolerance of the second rounded corner R2 is 0.7-0.9mm, and the dimensional tolerance of the third rounded corner R3 is 0.4-0.6mm, since the first rounded corner R1, the second rounded corner R2, and the third rounded corner R3 are all disposed in a circular arc shape in contact with the paper diaphragm, the first rounded corner R1 ensures that the diaphragm is not damaged during the contact between the tab 110 and the paper diaphragm, and at the same time, the circular arc shape is disposed in a smaller volume with respect to the plane and the slope at the same length and width, thereby reducing the pressure applied to the paper diaphragm.

Preferably, a protrusion 121 is outwardly disposed in the middle of the tail end of the connecting portion 120, and the head end of the ear piece 110 is inserted into the protrusion 121 and is connected to the protrusion, that is, the protrusion 121 is connected to the upper and lower end surfaces of the ear piece 110, so that the connection between the ear piece 110 and the connecting portion 120 is firmer.

Preferably, the head end of the connecting portion 120 and the tail end of the lead portion 130 are fixedly connected by the welding portion 140, and the tab 110, the connecting portion 120 and the lead portion 130 are located on the same axis, so that the tensile strength of the connecting portion 120 and the lead portion 130 is improved after welding.

Preferably, the lug 110 is flat, so that the contact area is increased, the lug is convenient to fix in a welding or riveting mode, the two corners of the tail end of the lug 110 are chamfered, the friction coefficient is reduced, the adjacent guide pins 100 cannot be scratched, the service life is prolonged, and the conductivity is good.

Preferably, the connection part 120 and the lead part 130 are both cylindrical structures, and the diameter of the lead part 130 is smaller than that of the connection part 120.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme formed by the arbitrary combination of the technical characteristics. The above is a detailed implementation manner of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A guide pin structure of a lithium ion capacitor is characterized by comprising:

2. The guide pin structure of the lithium ion capacitor according to claim 1, wherein a convex portion is outwardly disposed in the middle of the tail end of the connecting portion, and the head end of the tab is inserted into the convex portion and is connected to be formed.

3. The guide pin structure of the lithium ion capacitor according to claim 1, wherein a head end of the connection portion is fixedly connected to a tail end of the lead-out portion by a welding portion, and the tab, the connection portion, and the lead-out portion are located on the same axis.

4. The guide pin structure of the lithium ion capacitor according to claim 1, wherein the tab is disposed in a flat shape, and two corners of the tail end of the tab are rounded.

5. The guide pin structure of the lithium ion capacitor according to claim 1, wherein the connecting portion and the lead-out portion are both cylindrical structures, and the diameter of the lead-out portion is smaller than that of the connecting portion.

6. The lead structure of a lithium ion capacitor of claim 1, wherein the first fillet dimensional tolerance is 0.5-0.7mm, the second fillet dimensional tolerance is 0.7-0.9mm, and the third fillet dimensional tolerance is 0.4-0.6 mm.