Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Explosion-proof combination valve, top cover and battery

A combined valve and top cover technology, which is applied in the direction of secondary batteries, battery pack components, secondary battery gas removal, etc., can solve the problems of inability to slow down or eliminate thermal runaway and single function, so as to slow down thermal runaway and improve safety sexual effect

Pending Publication Date: 2021-03-09
JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing explosion-proof valves have the following defects: a single-layer membrane structure is adopted, the explosion-proof structure is relatively simple and the function is single, and only one membrane covers the reserved hole; only one-way exhaust can not slow down or prevent the occurrence of thermal runaway

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Explosion-proof combination valve, top cover and battery
  • Explosion-proof combination valve, top cover and battery
  • Explosion-proof combination valve, top cover and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0053] An explosion-proof combined valve, comprising an explosion-proof chamber 1, which is provided with a through hole 11; an outer explosion-proof plate 2, which is arranged above the through hole 11; an inner explosion-proof plate 3, which is arranged below the through hole 11; an explosion-proof chamber 1, an outer explosion-proof plate 2 and the inner explosion-proof plate 3 form a closed space for containing explosion-proof materials, the enclosed space contains explosion-proof materials, and the inner explosion-proof plate 3 ruptures under the set conditions to release the explosion-proof materials into the battery.

[0054] Because the existing explosion-proof valve has the following defects: it adopts a single-layer membrane structure, the explosion-proof structure is relatively simple and has a single function, and only one membrane covers the reserved hole; it can only exhaust in one direction, and cannot slow down or prevent the occurrence of thermal runaway. There...

Embodiment approach 2

[0065] see Figure 5 to Figure 8 As shown, the difference from the first embodiment is that the explosion-proof chamber 1 of this embodiment is provided with a breakthrough structure 4, which can pierce the inner explosion-proof plate 3 at a set temperature and / or pressure, and the breakthrough structure 4 includes a fixed frame and at least one punching knife 42 / punching needle, the fixed frame is installed in the explosion-proof chamber 1 / integrated with the explosion-proof chamber 1, the fixed frame is a frame 41, and the frame 41 includes a horizontal bar 411, a longitudinal bar 412 and an outer frame 413, at least one Punching knife 42 is arranged on cross bar 411, vertical bar 412 or cross bar 42 and longitudinal bar 412 intersections, and punching knife 42 is arranged on the middle part of cross bar 411, and the covered area of ​​outer protective sheet 6 is equal to the covered area of ​​outer explosion-proof sheet 2. area, the thickness of the inner explosion-proof dis...

Embodiment approach 3

[0068] see Figure 9As shown, the difference from Embodiment 1 is that the fixed frame of this embodiment is a supporting beam 401, and at least one punching knife 42 is arranged on the supporting beam 401. Preferably, the punching knife 42 is arranged in the middle of the supporting beam 401, and the inner explosion-proof disc The thickness of 3 and the thickness of outer explosion-proof disk 2 are both 0.25mm. Before the battery is abnormal or thermally out of control, the internal pressure or temperature of the battery is relatively high, so that the inner explosion-proof plate 3 is bulged, and the breakthrough structure 4 is in contact with the inner explosion-proof plate 3, and the punching knife 42 on the breakthrough structure 4 can pierce the inner explosion-proof Sheet 3 allows the explosion-proof material to enter the inside of the battery, which helps to slow down the thermal runaway of the battery. The support beam 401 cooperates with the clamping plates 403 at bot...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of batteries, and particularly relates to an explosion-proof combination valve which comprises an explosion-proof cavity (1) provided with a through hole (11), an outer explosion-proof sheet (2) arranged above the through hole (11), and an inner explosion-proof sheet (3) arranged below the through hole (11); the explosion-proof cavity (1), the outer explosion-proof sheet (2) and the inner explosion-proof sheet (3) form a closed space for accommodating an explosion-proof material, the explosion-proof material is accommodated in the closed space, andthe inner explosion-proof sheet (3) is broken under set conditions to release the explosion-proof material into the battery. Thermal runaway in the battery can be slowed down, and the safety of the battery is improved. In addition, the invention also discloses a top cover and a battery.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to an explosion-proof combined valve, a top cover and a battery. Background technique [0002] Nowadays, all countries are vigorously developing green and high-efficiency secondary batteries. As a new type of secondary battery, lithium-ion batteries have the advantages of high energy density and power density, high working voltage, light weight, small size, long cycle life, good safety, and environmental protection. They are widely used in portable appliances, electric tools, large Energy storage, electric transportation power supply and other aspects have broad application prospects. In the current power battery, if the battery is abused or misused, it is likely to generate gas, a large amount of heat or other substances inside, and may even explode. In addition, before the battery is abnormal, if the battery is overcharged, discharged, short-circuited, During high ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/342H01M50/383H01M10/0525H01M10/52
CPCH01M10/52H01M10/0525Y02E60/10
Inventor 邓江南姜斌江柯成刘晨南杨秋立
Owner JIANGSU ZENIO NEW ENERGY BATTERY TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com