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Micro battery sealing and explosion-preventing structure and inner pressure detecting method

A technology of miniature battery and explosion-proof structure, which is applied in the direction of lithium battery, structural parts, battery pack parts, etc., can solve the problems of hidden danger of battery and the inability to detect internal pressure of the battery, so as to improve the safety of use, take up less space, and improve the performance of the battery. Effects of rigidity and structural strength

Pending Publication Date: 2020-11-24
NINGBO YINZHOU WANHENG BATTERY PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the formation process, a certain pressure will be generated inside the battery. When the pressure is too high, the use of the battery will have certain safety hazards. In the traditional process, the internal pressure of the battery after formation cannot be detected.

Method used

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  • Micro battery sealing and explosion-preventing structure and inner pressure detecting method
  • Micro battery sealing and explosion-preventing structure and inner pressure detecting method
  • Micro battery sealing and explosion-preventing structure and inner pressure detecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one, refer to figure 1 , in this embodiment, it includes a casing 1 with an open upper end, which is a cylindrical structure, and an installation cavity for installing a battery assembly is provided in the casing, and the upper end of the installation cavity forms a seal for installing a sealing assembly. In the seal installation area, a seal assembly is installed in the seal installation area. The seal assembly includes a support ring 2, a seal ring 3 and a cover body. The edge of the support ring 2 is bent downward to form a support part 21. The outer wall of the support part 21 is attached to the inner wall of the housing, and the lower end of the support part 21 is in contact with the bottom surface of the installation cavity to realize the shaft Orientation, a seal ring 3 is provided on the upper end of the support ring, and an annular groove with an opening inward (towards the axis of the housing) is provided on the seal ring—the annular groove is suppo...

Embodiment 2

[0034] Embodiment two, refer to figure 2, which is different from Embodiment 1 in that the cover body includes an upper cover body 4 and a lower cover body 5, the upper cover body is located at the upper end of the lower cover body, and the edges of the upper cover body and the lower cover body are located at the edge of the sealing ring In the annular groove, an exhaust port 41 is provided on the upper cover, an explosion-proof hole 60 is provided on the lower cover, and an explosion-proof membrane 5 that can cover the explosion-proof hole is sealed and bonded on the upper surface of the lower cover; in this embodiment Among them, the battery assembly is connected to the lower surface of the lower cover (top cover) through wires, and the connection position is relatively large; the overall explosion-proof effect is good.

Embodiment 3

[0035] Embodiment three, refer to image 3 , which is different from Embodiment 2 in that the explosion-proof membrane is arranged on the lower surface of the lower cover.

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Abstract

The invention provides a micro battery sealing and explosion-preventing structure. The micro battery sealing and explosion-preventing structure comprises a housing with an upper-end opening, wherein amounting cavity for mounting a battery assembly is arranged in the housing; the upper end of the mounting cavity is equipped with a sealing assembly mounting region for mounting a sealing assembly; the sealing assembly comprises a supporting ring, a sealing ring and a cover body; the edge of the supporting ring is downwards bent to define a supporting part which fits to the inner wall of the housing; the lower end part of the supporting part is in contact with the bottom surface of the mounting cavity or a supporting step on the side wall of the housing; the sealing ring is arranged on the upper surface of the supporting ring; a ring-shaped groove with an inward opening is formed in the sealing ring; the edge of the cover body is blocked in the ring-shaped groove; and the upper opening end of the housing is inwards bent to form a pressing part for pressing the sealing assembly. The micro battery sealing and explosion-preventing structure provided by the invention is compact in structure, is small in occupied space, is good in sealing effect, has explosion-preventing effect, and is high in safety coefficient.

Description

technical field [0001] The invention relates to a miniature button battery, in particular to a microbattery sealing and explosion-proof structure and an internal pressure detection method. Background technique [0002] With the continuous development of microelectronics technology and the advent of 5G, miniaturized electronic equipment is increasing, such as Bluetooth headsets, wireless miniature cameras, smart glasses, etc. Due to the small size of the equipment itself, there is less space for installing components inside it. Therefore, it is necessary to reduce the battery volume as much as possible when the battery capacity is constant, or to increase the battery capacity as much as possible when the volume is constant; while the above-mentioned miniaturized equipment is small in size, the micro button type is used. Batteries, smaller in size, usually lithium batteries. The interior of the lithium battery adopts a spiral wound structure, and a very fine and highly permea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07C5/34H01M2/02H01M2/08H01M2/10H01M2/12H01M10/052
CPCB07C5/34H01M10/052Y02E60/10
Inventor 王君
Owner NINGBO YINZHOU WANHENG BATTERY PARTS
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