CN216576055U

CN216576055U - Lithium ion cylinder electricity core utmost point ear welding set

Info

Publication number: CN216576055U
Application number: CN202122725870.3U
Authority: CN
Inventors: 昝占华; 杨彩玲; 梁斯祺
Original assignee: Tianjin Space Power Technology Co ltd
Current assignee: Tianjin Space Power Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-05-24
Anticipated expiration: 2031-11-08

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly relates to a lithium ion cylindrical battery cell tab welding device which comprises a spring jacking mechanism, a tab clamping device, a V-shaped block and a bottom plate, wherein the V-shaped block is used for placing a cylindrical battery cell, the V-shaped block is arranged in the center of the bottom plate, the tab clamping device used for clamping a battery welding assembly and a tab up and down is arranged on one side of the V-shaped block, the spring jacking mechanism is positioned on two sides of the V-shaped block and respectively butts against a negative pole column and a positive pole cover to jack up a central shaft of the cylindrical battery cell, and the cylindrical battery cell and the battery welding assembly are coaxial. The utility model provides a lithium ion cylindrical battery cell lug welding device which can effectively improve the welding efficiency and the welding quality.

Description

Lithium ion cylinder electricity core utmost point ear welding set

Technical Field

The utility model belongs to the technical field of battery manufacturing, and particularly relates to a lithium ion cylindrical battery cell tab welding device.

Background

The prior art and the defects are as follows:

with the increase of the supporting force of China on new energy, the lithium ion battery industry is also confronted with the development opportunity, and because the lithium ion battery has the advantages of environmental protection, high energy, long cycle life and the like, the lithium ion battery is widely applied to the fields of electric automobiles, space satellites and the like, the market demand is stronger, and therefore higher and tighter requirements are provided for the quality and efficiency of the tab and a corresponding battery structural member during laser welding.

The existing tab welding mode has the problems of large welding size error, low welding efficiency, incapability of ensuring the welding quality and the like, and cannot meet the high standard requirement of increasing markets for tab welding.

The difficulty and significance for solving the technical problems are as follows:

therefore, based on the problems, the lithium ion cylindrical battery cell tab welding device capable of effectively improving the welding efficiency and the welding quality has important practical significance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lithium ion cylindrical battery cell lug welding device which can effectively improve the welding efficiency and the welding quality for solving the technical problems in the prior art.

The technical scheme adopted by the utility model for solving the technical problems in the prior art is as follows:

a lithium ion cylindrical cell tab welding device comprises a spring jacking mechanism, a tab clamping device, a V-shaped block and a bottom plate, wherein the V-shaped block is arranged in the center of the bottom plate, the tab clamping device is used for vertically clamping a battery welding assembly and a tab, the spring jacking mechanism is positioned on two sides of the V-shaped block and respectively butts against a negative pole column and a positive pole cover, the cylindrical cell is jacked by a central shaft, and the cylindrical cell and the battery welding assembly are coaxial;

the spring jacking mechanism comprises a stop block, a base, a bushing, a jacking rod, a spring, a brake block and a knob handle, wherein the stop block is fixed on the base through a screw, a stop block hole is formed in the center of the stop block, the bushing and the brake block are embedded into two ends of the stop block hole, the jacking rod penetrates through the bushing, the stop block hole and the brake block and is connected with the knob handle, the jacking rod can move along the central axis of the stop block hole, the spring is sleeved on the jacking rod, one end of the spring abuts against the bushing, and the other end of the spring abuts against the jacking rod;

utmost point ear clamping device includes anti-drop knob, crimping bottom plate, supporting shoe, nearly style of calligraphy clamp plate and backup pad, the crimping bottom plate is fixed in on the bottom plate, the supporting shoe passes through screw and crimping bottom plate fixed connection, the backup pad both ends card is on the fixed slot at supporting shoe top, to its spacing arrangement, it has spacing groove and prevents the through-hole of negative pole post and the completion of utmost point ear welding back and backup pad adhesion to open in the backup pad, the negative pole post is accommodated in the spacing groove and utmost point ear stacks, when anti-drop knob was screwed up, nearly style of calligraphy clamp plate presss from both sides tightly with the backup pad.

The supporting plate is used for installing and positioning the lug and the battery component, supporting the lug and the battery component during welding, and effectively increasing the heat dissipation area.

The utility model can also adopt the following technical scheme:

in the above-mentioned lithium ion cylinder electricity core utmost point ear welding set, further, utmost point ear clamping device still includes the guide bar, the guide bar is fixed in on the crimping bottom plate through the screw thread, the guide bar passes nearly style of calligraphy clamp plate, nearly style of calligraphy clamp plate can be along the guide bar up-and-down motion.

The N-shaped pressing plates can move up and down along the guide rods to play a role in guiding, and the N-shaped pressing plates can move down through the guide rods to press the tabs and the welding parts tightly.

In the above device for welding a tab of a cylindrical lithium ion battery cell, further, the cross section of the brake block is rectangular, and the brake block is sleeved on the tightening rod, and when the brake block rotates around the tightening rod by 90 degrees, the brake block is hung on the stop block.

The puller rod is pulled through the knob handle, and the brake block is rotated by 90 degrees anticlockwise or 90 degrees clockwise, so that the action of pulling and loosening the battery cell is realized.

In conclusion, the utility model has the following advantages and positive effects:

1. the utility model relates to a production tool required by laser welding of positive and negative current collectors of a lithium ion cylindrical battery core and a corresponding battery structural member, and the production efficiency is improved by more than 200% through the design of the tool.

Drawings

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the overall structure of the present invention;

fig. 2-1 is a schematic structural view of a tab clamping device of the present invention;

fig. 2-2, a partial schematic view of a tab clamping arrangement of the present invention;

fig. 3 is a schematic structural diagram of the spring jacking mechanism of the utility model.

In the figure:

1. the device comprises a spring jacking mechanism 2, a lug clamping device 3, a V-shaped block 4 and a bottom plate;

2-1 of an anti-drop knob, 2-2 of a crimping bottom plate, 2-3 of a supporting block, 2-4 of a pressure plate in a shape like a Chinese character 'ji', 2-5 of a supporting plate, 2-6 of a guide rod, 2-7 of a fixing groove, 2-8 of a limiting groove and 2-9 of a through hole;

1-1 part of a stop block, 1-2 parts of a base, 1-3 parts of a bushing, 1-4 parts of a tightening rod, 1-5 parts of a spring, 1-6 parts of a brake block, 1-7 parts of a knob handle.

Detailed Description

The present invention will be specifically described with reference to fig. 1.

The utility model provides a lithium ion cylinder battery utmost point ear welding set, set up V type piece 3 and be fixed in on bottom plate 4, set up utmost point ear clamping device 2 in the 3 right sides of V type piece, set up spring jack-up mechanism 1 respectively in V type piece 3 and utmost point ear clamping device 2 left and right sides, when carrying out utmost point ear welding operation, the cylinder electricity core is arranged in on V type piece 3, carry out the central positioning to electric core, both ends spring jack-up mechanism 1 carries out the center pin and pushes up tightly, ensure that electric core and battery welding subassembly are on the axiality, utmost point ear clamping device 2 presss from both sides battery welding subassembly and utmost point ear from top to bottom, backup pad 2-5 increase heat radiating area among the utmost point ear clamping device, accomplish the welding of electric core utmost point ear and battery related subassembly through laser welding equipment.

The cylindrical lithium ion battery is placed on the V-shaped block 3, and the V-shaped block 3 is fixed on the bottom plate 4 through screws.

The tab clamping device mainly comprises a press block V-shaped press plate 2-4, a guide rod 2-6, a support plate 2-5, a support block 2-3 and a compression bottom plate 2-2. The crimping base plate 2-2 is fixed on the base plate 4, the supporting block 2-3 is fixedly connected with the crimping base plate 2-2 through a screw, two ends of the supporting plate 2-5 are clamped on fixing grooves 2-7 at the top of the supporting block 2-3 to limit the supporting block, a limiting groove 2-8 and a through hole 2-9 are formed in the supporting plate 2-5, a negative pole column and a pole lug are stacked in the limiting groove 2-8, the through hole 2-9 prevents the negative pole column from being adhered to the supporting plate after the welding of the negative pole column and the pole lug is completed, the pole lug and a battery component are installed and positioned and play a role in supporting during welding, the heat dissipation area is effectively increased, the guide rod 2-6 is fixed on the crimping base plate 2-2 through a screw thread, and the V-shaped pressing plate 2-4 can move up and down along the guide rod 2-6, thereby playing a guiding role, the pressure plate 2-4 in a shape like a Chinese character 'ji' moves downwards through the guide rod 2-6 to press the pole lug and a welding part tightly, and the anti-falling knob 2-1 is screwed up to clamp and fix the pressure plate 2-4 in a shape like a Chinese character 'ji'.

The spring tightening mechanism mainly comprises a stop block 1-1, a tightening rod 1-4, a spring 1-5, a brake block 1-6 and a knob handle 1-7. The battery cell jacking device comprises a base, a check block 1-1, a bushing 1-3, a jacking rod 1-4, a knob handle 1-7, a spring 1-5, a knob handle 1-4 and a base seat 1-2, wherein the check block 1-1 is fixed on the base seat 1-2 through screws, the bushing 1-3 is embedded into the check block 1-1, the jacking rod 1-4 penetrates through the bushing, a check block hole and a brake block 1-6 and is connected with the knob handle 1-7, and the jacking rod 1-4 is pulled through the knob handle 1-7 to realize the jacking action of the battery cell.

On V type piece 3 was arranged in to cylinder electricity core, center location was carried out to electric core, both ends spring top tight mechanism 1 carried out the center pin top tightly, ensured that electric core and battery welding subassembly are on the axiality, utmost point ear clamping device 2 presss from both sides tightly battery welding subassembly and utmost point ear from top to bottom, backup pad increase heat radiating area among the utmost point ear clamping device 2, accomplish the welding of electric core utmost point ear and the relevant subassembly of battery through laser welding equipment at last, through the design of this frock, messenger production efficiency promotes more than 200%.

In conclusion, the utility model provides the lithium ion cylindrical battery cell tab welding device which can effectively improve the welding efficiency and the welding quality.

The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. The utility model provides a lithium ion cylinder electricity core utmost point ear welding set which characterized in that: the lithium ion cylindrical cell tab welding device comprises a spring jacking mechanism, a tab clamping device, a V-shaped block and a bottom plate, wherein the V-shaped block is arranged in the center of the bottom plate, the tab clamping device is used for vertically clamping a battery welding assembly and a tab, the spring jacking mechanism is positioned on two sides of the V-shaped block and respectively butts against a negative pole column and a positive pole cover to jack the central shaft of the cylindrical cell, and the cylindrical cell and the battery welding assembly are coaxial;

2. The lithium ion cylindrical cell tab welding device of claim 1, wherein: the pole lug clamping device further comprises a guide rod, the guide rod is fixed on the crimping bottom plate through threads, the guide rod penetrates through the pressure plates in the shape like a Chinese character 'ji', and the pressure plates in the shape like a Chinese character 'ji' can move up and down along the guide rod.

3. The lithium ion cylindrical cell tab welding device of claim 1, wherein: the cross section of the brake block is rectangular, the brake block is sleeved on the tightening rod, and when the brake block rotates around the tightening rod by 90 degrees, the brake block is hung on the stop block.