CN213242759U

CN213242759U - Novel cylindrical battery core current collecting disc structure

Info

Publication number: CN213242759U
Application number: CN202022564598.0U
Authority: CN
Inventors: 宁亚军; 相江峰; 刘小舟; 钱华玉
Original assignee: Jiangxi Far East Battery Co ltd
Current assignee: Jiangxi Far East Battery Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-05-18
Anticipated expiration: 2030-11-09

Abstract

The utility model relates to a lithium cell field specifically is a novel cylinder electricity core current collector structure. The flow collecting disc is provided with a welding part, a bending part and an installation part, the welding part is a welding plane, a T-shaped reinforcing rib is arranged on the welding plane, a liquid seepage hole is formed in the T-shaped reinforcing rib, a square reinforcing rib is arranged on the bending part, and bending notches are formed in the periphery of the bending part; an assembly hole is formed in the mounting portion. This structure ingenious design kink can realize the accurate adjustment of current collection dish, thereby can the explosion-proof valve of the weak easy damage of most effectual protection through the setting of the breach of buckling, is favorable to improving the yield, and this current collection dish's structure is comparatively simple, uses and convenient assembling, satisfies the user demand, and the practicality is stronger.

Description

Novel cylindrical battery core current collecting disc structure

Technical Field

The utility model relates to a lithium cell field specifically is a novel cylinder electricity core current collector structure.

Background

The lithium ion battery is a secondary battery, also called as a rechargeable battery, and Li + is inserted and extracted back and forth between two electrodes in the charging and discharging process; during charging, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. The development of telecommunication and information markets, particularly the mass use of mobile phones and notebook computers, brings market opportunities to lithium ion batteries. Among the currently commercialized secondary batteries, the lithium ion battery has the highest specific energy, and the secondary battery can be thinned; in addition, lithium ion batteries have been rapidly growing in developed countries due to their high volumetric and mass specific energies, long service life, good safety, simple and convenient process, being rechargeable and pollution-free, and having many characteristics of current battery industry development. At present, in the production of lithium ion batteries, the position of an explosion-proof valve needs to be adjusted after a current collecting disc is welded, but the explosion-proof valve belongs to a weak and easily damaged part, the damage rate in the adjustment process is high, the yield of the batteries is reduced, and therefore the current collecting disc needs to be optimized and upgraded to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problems that: the utility model provides a novel cylinder electricity core current collector structure, this structure ingenious design kink can realize the accurate adjustment of current collector, and concrete technical scheme is as follows:

a novel cylindrical battery core current collecting disc structure: the current collecting disc is provided with a welding part, a bending part and an installation part, wherein the welding part is a welding plane, a T-shaped reinforcing rib is arranged on the welding plane, and a liquid seepage hole is formed in the T-shaped reinforcing rib, so that the liquid seepage hole is convenient for the battery cell to soak, and the electrolyte can conveniently infiltrate into the battery cell; the bending part is provided with a square reinforcing rib, bending notches are formed around the bending part, and the current collecting disc is bent and positioned twice in the battery cell through the four bending notches, so that the accurate bending position of the current collecting disc is ensured; and the mounting part is provided with an assembling hole for riveting the current collecting disc and the external terminal to realize the switching from the current collecting disc to the external terminal.

Further, the current collecting disc is connected with the pole group through the welding plane by laser welding.

Furthermore, the welding plane is fan-shaped and is formed by stamping.

Furthermore, the number of the liquid seepage holes is more than 2.

Furthermore, the square reinforcing ribs enable the width of 1-2 mm reserved on the two sides of the current collecting disc to be formed with the height difference of 0-1 mm with the central plane through stamping.

The utility model provides a novel cylinder electricity core current collector structure, this structure ingenious design kink can realize the accurate adjustment of current collector, thereby can be favorable to improving the yield through the explosion-proof valve of the weak easy damage of effectual protection of setting up of the breach of buckling, and this current collector's structure is comparatively simple, uses and convenient assembling, satisfies the user demand, and the practicality is stronger.

Drawings

FIG. 1 is a schematic view of the welding of a current collecting plate and a pole group;

FIG. 2 is a schematic view of the structure of the current collecting plate of the present invention;

reference numerals:

11-current collecting disc, 12-pole group, 111-assembling hole, 112-bending gap, 113-square reinforcing rib, 114-welding plane, 115-liquid seepage hole and 116-T-shaped reinforcing rib.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The current collecting disc 11 of this embodiment is provided with a welding portion, a bending portion, and an installation portion, the welding portion is a welding plane 114, a T-shaped reinforcing rib 116 is arranged on the welding plane 114, and a liquid seepage hole 115 is arranged on the T-shaped reinforcing rib 116, so that the liquid seepage hole is convenient for a battery cell to be soaked, and an electrolyte is convenient to permeate into the battery cell; the bending part is provided with a square reinforcing rib 113, bending notches 112 are formed around the bending part, and the current collecting disc is bent and positioned twice in the battery cell through the four bending notches, so that the accurate bending position of the current collecting disc is ensured; the mounting portion is provided with an assembling hole 111 for riveting the current collecting disc and the external terminal, so that the current collecting disc is connected with the external terminal in a switching mode. The current collecting plate 11 is connected to the pole group 12 by laser welding via a welding plane 114. The welding plane 114 is a sector and is formed by stamping. The number of the liquid seepage holes 115 is more than 2. The square reinforcing ribs 113 are formed by reserving the width of 1-2 mm at the two sides of the current collecting disc and forming the height difference of 0-1 mm with the central plane through stamping.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides a novel cylinder electricity core current collector structure which characterized in that: the current collecting disc (11) is provided with a welding part, a bending part and an installation part, wherein the welding part is a welding plane (114), a T-shaped reinforcing rib (116) is arranged on the welding plane (114), and a liquid seepage hole (115) is formed in the T-shaped reinforcing rib (116), so that the liquid seepage hole is convenient for the battery core to be soaked, and the electrolyte is convenient to permeate into the battery core; the bending part is provided with a square reinforcing rib (113), bending notches (112) are formed around the bending part, and the current collecting disc is bent and positioned twice in the battery cell through the four bending notches, so that the accurate bending position of the current collecting disc is ensured; the mounting portion is provided with an assembling hole (111) which is used for riveting the current collecting disc and the external terminal, so that the current collecting disc is connected with the external terminal in a switching mode.

2. The novel cylindrical cell current collector disc structure of claim 1, wherein: the current collecting disc (11) is connected with the pole group (12) through a welding plane (114) through laser welding.

3. The novel cylindrical cell current collector disc structure of claim 1, wherein: the welding plane (114) is in a fan shape and is formed by stamping.

4. The novel cylindrical cell current collector disc structure of claim 1, wherein: the number of the liquid seepage holes (115) is more than 2.

5. The novel cylindrical cell current collector disc structure of claim 1, wherein: the square reinforcing ribs (113) enable the width of 1-2 mm reserved on the two sides of the current collecting disc and the central plane to form a height difference of 0-1 mm through stamping.