Encapsulating method and device of lithium ion battery

A lithium-ion battery and packaging device technology, which is applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, electrolyte batteries, etc., can solve the problem of reducing the cycle life of lithium-ion batteries, affecting battery cycle and safety, and affecting the performance of lithium-ion batteries, etc. problems, to achieve the effect of improving cycle life and safety, improving safety and packaging quality, and improving competitive advantage

Active Publication Date: 2018-11-30
北京英耐时新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because lithium-ion batteries are prone to flatulence during charging, discharging and storage, and the casing of lithium-ion batteries in the prior art is easily deformed and gasses outward, which greatly reduces the cycle life of lithium-ion batteries and affects the quality of lithium-ion batteries. performance of
In particular, the sealing of the aluminum-plastic film of the soft-pack battery is prone to poor sealing, and the battery absorbs water to cause flatulence, the sealing cannot resist internal pressure, and leakage occurs.
At present, the existing device for packaging aluminum-plastic film only has the function of heat sealing, but it cannot be heat-sealed, and the seal is not sealed; after heat-sealing, it is necessary to wait for it to cool down and then re-seal the package after cooling, which wastes time and seriously reduces production efficiency. Movement will affect the packaging quality, and also affect the cycle and safety of the battery

Method used

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  • Encapsulating method and device of lithium ion battery
  • Encapsulating method and device of lithium ion battery
  • Encapsulating method and device of lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see figure 1 , The present invention provides a packaging method and device for heating and packaging lithium-ion batteries first and then rapidly cooling them. The device includes a heat sealing unit 1 , a turntable 2 and a cold sealing unit 3 . The heat-sealing unit 1 can heat and seal the electric core, the cold-sealing unit 3 can cool and seal the electric core, the electric core can be installed on the turntable 2, and the electric core can be rotated to Action between hot air unit 1, cooling unit 2 and other positions.

[0026] Wherein, the heating package temperature is 80 to 200°C, the package time is 1s-4s, the cooling package temperature is -10°C to 30°C, the package time is 1s-3s, and the time interval between the heating package and the cooling package is 2s to 5s.

[0027] Wherein, the heat-sealing unit includes a first pneumatic mechanism, a first sealing unit, a temperature unit, and a time unit. The first pneumatic mechanism includes an adjusting butt...

Embodiment 2

[0035] see Figure 7-9 , shows the tray structure of Embodiment 2 of the present invention, wherein, the tray 6 is formed with a groove at the station (the groove may or may not pass through the tray), the first limiting device, The second limiting device is all arranged in the groove, and the first limiting device includes a left limiting block 41 and a right limiting block 42, each limiting block main body is a substantially trapezoidal structure and a step at the top of the trapezoid Part 412 / 422, the upper surface of the limit block is inclined inward, the left limit block 41 is fixedly connected with the left side of the bracket through the thread structure 413, and the left limit block can be adjusted through the thread structure 413 41, the threaded structure may be a bolt, preferably a bolt with certain elasticity. The right limiting block 42 is connected to the tray 6 through an elastic member 423 (such as a spring), and the right limiting block 42 and the left limit...

Embodiment 3

[0039] continue to attach Figure 7-9 The structure of Embodiment 3 of the present invention is described. Embodiment 3 mainly addresses the disadvantage that the battery in Embodiment 2 is inconvenient to be removed. Specifically, in Example 3, the groove at the station on the tray 6 is a through structure, the size of the groove on the tray 6 is also larger than that of the battery, and the tops of the three limiting blocks protrude from the groove. A fixed plate 61 is correspondingly arranged under the tray 6, and the fixed plate 61 forms an opening 611 only at the station where the battery needs to be removed, and the size of the opening 611 allows the battery to pass through. The fixing 61 does not rotate with the tray 6, and keeps a small gap with the tray 6, such as 0.3-2 mm.

[0040] When the package works normally, the battery rotates together with the tray 6 under the clamping of the limit block. When the battery is in the position to be removed, there is an openin...

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Abstract

The invention discloses an encapsulating method and device of a lithium ion battery. The method and device realize heating encapsulating of a lithium ion battery and then fast cooling. The device comprises a heat encapsulating unit, a transmission structure and a cold encapsulating unit. The heat sealing unit heats and encapsulates a cell, and the treated cell is conveyed into the cold encapsulating unit through the transmission structure and then is cooled and encapsulated. The encapsulating method and device shorten the adjustment time from heat encapsulating to cold encapsulating, preventswaste of resources and time and improves the production efficiency. The method and device can effectively suppress the flatulence of the lithium ion battery, prolong the storage time of the battery, and greatly improve the cycle life and safety of the lithium ion battery.

Description

technical field [0001] The invention relates to the field of secondary batteries, in particular to a lithium ion battery packaging method and a device thereof. Background technique [0002] Lithium-ion batteries have unique advantages such as large energy storage, light weight, high power, long life, no pollution, and wide temperature range. They are widely used in energy storage and electric vehicles, and are key products for the development of new energy in the future. [0003] Because lithium-ion batteries are prone to flatulence during charging, discharging and storage, and the casing of lithium-ion batteries in the prior art is easily deformed and gasses outward, which greatly reduces the cycle life of lithium-ion batteries and affects the quality of lithium-ion batteries. various performances. In particular, the sealing of the aluminum-plastic film of the soft-pack battery is prone to poor sealing, the battery absorbs water and becomes flatulent, the sealing cannot re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/613H01M10/615
CPCH01M10/058H01M10/613H01M10/615Y02E60/10Y02P70/50
Inventor 丁莹李文迪石岩
Owner 北京英耐时新能源科技有限公司
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